Subjects -> SOCIAL SCIENCES (Total: 1648 journals)
    - BIRTH CONTROL (22 journals)
    - CHILDREN AND YOUTH (262 journals)
    - FOLKLORE (30 journals)
    - MATRIMONY (16 journals)
    - MEN'S INTERESTS (16 journals)
    - MEN'S STUDIES (90 journals)
    - SEXUALITY (56 journals)
    - SOCIAL SCIENCES (937 journals)
    - WOMEN'S INTERESTS (44 journals)
    - WOMEN'S STUDIES (175 journals)

SOCIAL SCIENCES (937 journals)                  1 2 3 4 5     

Showing 1 - 136 of 136 Journals sorted alphabetically
A contrario     Full-text available via subscription   (Followers: 2)
Aboriginal and Islander Health Worker Journal     Full-text available via subscription   (Followers: 8)
About Performance     Full-text available via subscription   (Followers: 9)
Academic Journal of Interdisciplinary Studies     Open Access   (Followers: 4)
Access     Full-text available via subscription   (Followers: 27)
ACCESS: Critical Perspectives on Communication, Cultural & Policy Studies     Full-text available via subscription   (Followers: 13)
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 19)
Acta Scientiarum. Human and Social Sciences     Open Access   (Followers: 7)
Acta Universitatis Sapientiae, Philologica     Open Access   (Followers: 3)
Actes de la Journée des Sciences et Savoirs     Open Access   (Followers: 1)
Adelphi series     Hybrid Journal   (Followers: 13)
Administrative Science Quarterly     Full-text available via subscription   (Followers: 221)
Administrative Theory & Praxis     Full-text available via subscription   (Followers: 8)
Adultspan Journal     Hybrid Journal   (Followers: 2)
Advances in Appreciative Inquiry     Hybrid Journal   (Followers: 1)
Advances in Southeast Asian Studies     Open Access  
Advocate: Newsletter of the National Tertiary Education Union     Full-text available via subscription   (Followers: 1)
Africa Spectrum     Open Access   (Followers: 18)
African Affairs     Hybrid Journal   (Followers: 69)
African Research Review     Open Access   (Followers: 5)
Akademik Hassasiyetler     Open Access  
Aleph : UCLA Undergraduate Research Journal for the Humanities and Social Sciences     Open Access   (Followers: 3)
Aletheia : Revista de Desarrollo Humano, Educativo y Social Contemporáneo     Open Access  
Algarrobo-MEL     Open Access   (Followers: 1)
Ambigua : Revista de Investigaciones sobre Género y Estudios Culturales     Open Access   (Followers: 1)
American Communist History     Hybrid Journal   (Followers: 21)
Anais Eletrônicos do Congresso Epistemologias do Sul     Open Access  
Anales de la Universidad de Chile     Open Access  
Análisis     Open Access  
Analysis     Full-text available via subscription   (Followers: 2)
Andamios. Revista de Investigacion Social     Open Access  
Anduli : Revista Andaluza de Ciencias Sociales     Open Access  
Ankara University SBF Journal     Open Access   (Followers: 2)
Annals of Humanities and Development Studies     Open Access   (Followers: 8)
Annals of the American Academy of Political and Social Science     Hybrid Journal   (Followers: 45)
Anthropocene Review     Hybrid Journal   (Followers: 9)
Apuntes : Revista de Ciencias Sociales     Open Access   (Followers: 1)
Arbejdspapirer : Professionshøjskolen Metropol     Open Access  
Arbetsliv i omvandling     Open Access   (Followers: 1)
Arbor     Open Access  
Argomenti. Rivista di economia, cultura e ricerca sociale     Open Access   (Followers: 4)
Argumentos : Revista do Departamento de Ciências Sociais da Unimontes     Open Access  
Around the Globe     Full-text available via subscription  
Articulo - Journal of Urban Research     Open Access   (Followers: 7)
Asia Pacific Journal of Sport and Social Science     Hybrid Journal   (Followers: 4)
Asian Journal of Quality of Life     Open Access   (Followers: 3)
Asian Journal of Social Science     Hybrid Journal   (Followers: 19)
Asian Journal of Social Sciences and Management Studies     Open Access   (Followers: 6)
Asian Research Journal of Arts & Social Sciences     Open Access  
Asian Social Science     Open Access   (Followers: 5)
Astrolabio, Nueva Época     Open Access  
Australasian Review of African Studies, The     Full-text available via subscription   (Followers: 2)
Australian Aboriginal Studies     Full-text available via subscription   (Followers: 10)
Australian and Aotearoa New Zealand Psychodrama Association Journal     Full-text available via subscription   (Followers: 5)
Australian Journal of Emergency Management     Full-text available via subscription   (Followers: 19)
Australian Journal on Volunteering     Full-text available via subscription   (Followers: 1)
Australian Population Studies     Open Access   (Followers: 1)
Bandung : Journal of the Global South     Open Access   (Followers: 1)
BARATARIA. Revista Castellano-Manchega de Ciencias sociales     Open Access  
Basic and Applied Social Psychology     Hybrid Journal   (Followers: 46)
Bayero Journal of Pure and Applied Sciences     Open Access  
Behavioural Sciences Undergraduate Journal     Open Access   (Followers: 3)
Big Data & Society     Open Access   (Followers: 43)
Bingöl Üniversitesi Sosyal Bilimler Enstitüsü Dergisi     Open Access  
Black Sea Journal of Public and Social Science     Open Access   (Followers: 1)
Black Women, Gender & Families     Full-text available via subscription   (Followers: 22)
BMC Medical Ethics     Open Access   (Followers: 19)
Bodhi : An Interdisciplinary Journal     Open Access   (Followers: 1)
Body Image     Hybrid Journal   (Followers: 18)
BOGA : Basque Studies Consortium Journal     Open Access   (Followers: 2)
Border Crossing : Transnational Working Papers     Open Access   (Followers: 3)
Borderlands Journal : Culture, Politics, Law and Earth     Open Access   (Followers: 4)
Brain and Cognition     Hybrid Journal   (Followers: 41)
British Review of New Zealand Studies     Full-text available via subscription   (Followers: 2)
Bulletin de l’Institut Français d’Études Andines     Open Access   (Followers: 1)
Caderno CRH     Open Access   (Followers: 1)
Cadernos de Saúde     Open Access  
Cahiers Jean Moulin     Open Access   (Followers: 23)
California Italian Studies Journal     Full-text available via subscription   (Followers: 7)
California Journal of Politics and Policy     Open Access   (Followers: 3)
Cambio : Rivista sulle Trasformazioni Sociali     Open Access   (Followers: 1)
Campos en Ciencias Sociales     Open Access  
Canadian Journal of Educational and Social Studies     Open Access   (Followers: 4)
Canadian Journal of Human Sexuality     Hybrid Journal   (Followers: 1)
Canadian Social Science     Open Access   (Followers: 11)
Caradde : Jurnal Pengabdian Kepada Masyarakat     Open Access  
Carbon Capture Science & Technology     Open Access   (Followers: 7)
Caribbean Studies     Full-text available via subscription   (Followers: 12)
Catalyst : A Social Justice Forum     Open Access   (Followers: 10)
Challenges     Open Access   (Followers: 2)
Changing Societies & Personalities     Open Access   (Followers: 2)
Children & Young People Now     Full-text available via subscription   (Followers: 4)
China Journal of Social Work     Hybrid Journal   (Followers: 2)
Chinese Journal of Social Science and Management     Open Access  
Chinese Studies     Open Access   (Followers: 6)
Ciência ET Praxis     Open Access  
Ciencia y Sociedad     Open Access   (Followers: 1)
Ciencia, Cultura y Sociedad     Open Access  
Ciencias Sociales y Educación     Open Access   (Followers: 1)
Circular Economy and Sustainability     Hybrid Journal   (Followers: 4)
Ciudad Paz-ando     Open Access  
Civilizar Ciencias Sociales y Humanas     Open Access   (Followers: 1)
Claroscuro     Open Access   (Followers: 1)
CLIO América     Open Access   (Followers: 3)
Cogent Social Sciences     Open Access   (Followers: 2)
Cognitive and Behavioral Practice     Hybrid Journal   (Followers: 13)
Communication, Politics & Culture     Open Access   (Followers: 16)
Communities, Children and Families Australia     Full-text available via subscription   (Followers: 4)
Community Empowerment     Open Access   (Followers: 1)
Comprehensive Results in Social Psychology     Hybrid Journal   (Followers: 3)
Comuni@cción     Open Access  
Connections     Open Access  
Contemporary Journal of African Studies     Full-text available via subscription   (Followers: 4)
Contemporary Social Science     Hybrid Journal   (Followers: 10)
Contribuciones desde Coatepec     Open Access  
Corporate Reputation Review     Hybrid Journal   (Followers: 4)
Creative and Knowledge Society     Open Access   (Followers: 10)
Critical Psychology     Hybrid Journal   (Followers: 7)
Critical Studies on Terrorism     Hybrid Journal   (Followers: 58)
CTheory     Open Access  
Cultura Latinoamericana     Open Access   (Followers: 1)
Cultural Trends     Hybrid Journal   (Followers: 15)
Culturas. Revista de Gestión Cultural     Open Access  
Culture Scope     Full-text available via subscription   (Followers: 2)
Current Research in Social Sciences     Open Access  
Debats. Revista de cultura, poder i societat     Open Access  
Demographic Research     Open Access   (Followers: 15)
Derecho y Ciencias Sociales     Open Access   (Followers: 1)
Desenvolvimento em Questão     Open Access  
Developing Practice : The Child, Youth and Family Work Journal     Full-text available via subscription   (Followers: 16)
Development     Hybrid Journal   (Followers: 20)
Didáctica de las Ciencias Experimentales y Sociales     Open Access  
DIFI Family Research and Proceedings     Open Access  
Digital Geography and Society     Open Access   (Followers: 1)
Discourse & Society     Hybrid Journal   (Followers: 60)
Discover Social Science and Health     Open Access   (Followers: 18)
Distinktion : Scandinavian Journal of Social Theory     Hybrid Journal   (Followers: 10)
Divulgatio : Perfiles Académicos de Posgrado     Open Access  
Drustvena istrazivanja     Open Access  
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 13)
Dynamics of Asymmetric Conflict: Pathways toward terrorism and genocide     Hybrid Journal   (Followers: 13)
E-l@tina : Revista Electrónica de Estudios Latinoamericanos     Open Access  
Eastern Africa Social Science Research Review     Full-text available via subscription   (Followers: 5)
Eat, Sleep, Work     Open Access   (Followers: 3)
EAU Heritage Journal Social Science and Humanities     Open Access   (Followers: 2)
Economic and Regional Studies / Studia Ekonomiczne i Regionalne     Open Access  
Educación, Lenguaje y Sociedad     Open Access  
Education, Business and Society : Contemporary Middle Eastern Issues     Hybrid Journal   (Followers: 1)
EFB Bioeconomy Journal     Open Access   (Followers: 1)
Égypte - Monde arabe     Open Access   (Followers: 4)
Éire-Ireland     Full-text available via subscription   (Followers: 8)
Electoral Studies     Hybrid Journal   (Followers: 46)
Emotions : History, Culture, Society     Full-text available via subscription  
Émulations : Revue de sciences sociales     Open Access  
Encuentros Multidisciplinares     Open Access  
Enfoques     Open Access  
Entramado     Open Access  
Equality, Diversity and Inclusion : An International Journal     Hybrid Journal   (Followers: 25)
Equidad y Desarrollo     Open Access  
Espace populations sociétés     Open Access   (Followers: 1)
Estudios digital     Open Access  
Estudios Sociales     Open Access  
Etcétera : Revista del Área de Ciencias Sociales del CIFFyH     Open Access  
Ethics and Social Welfare     Hybrid Journal   (Followers: 24)
Ethnic and Racial Studies     Hybrid Journal   (Followers: 49)
Ethnobotany Research & Applications : a journal of plants, people and applied research     Open Access   (Followers: 3)
Études canadiennes / Canadian Studies     Open Access   (Followers: 3)
Études rurales     Open Access   (Followers: 2)
EUREKA : Social and Humanities     Open Access  
Eureka Street     Full-text available via subscription   (Followers: 4)
European Journal of Futures Research     Open Access  
European Journal of Social Psychology     Hybrid Journal   (Followers: 44)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Review     Hybrid Journal   (Followers: 20)
European Review of Social Psychology     Hybrid Journal   (Followers: 16)
European View     Hybrid Journal   (Followers: 1)
European Yearbook of Minority Issues Online     Hybrid Journal   (Followers: 5)
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
ExT : Revista de Extensión de la UNC     Open Access  
Fa Nuea Journal     Open Access  
Family Matters     Full-text available via subscription   (Followers: 9)
Family Process     Partially Free   (Followers: 11)
Family Relations     Partially Free   (Followers: 12)
Family Science     Hybrid Journal   (Followers: 1)
Fields: Journal of Huddersfield Student Research     Open Access  
Finnish Journal of Social Research      Open Access   (Followers: 6)
Flaubert     Open Access   (Followers: 1)
Formation emploi     Open Access  
FORO. Revista de Ciencias Jurídicas y Sociales, Nueva Época     Open Access   (Followers: 2)
Forskning & Forandring : Research and Change     Open Access  
Forum Ilmu Sosial     Open Access  
Forum Qualitative Sozialforschung / Forum: Qualitative Social Research     Open Access   (Followers: 9)
Fourth World Journal     Full-text available via subscription  
Fudan Journal of the Humanities and Social Sciences     Hybrid Journal   (Followers: 2)
Funes. Journal of Narratives and Social Sciences     Open Access  
Future Times     Full-text available via subscription   (Followers: 1)
Ganesha Journal     Open Access  
Genocide Studies and Prevention     Full-text available via subscription   (Followers: 9)
Genocide Studies International     Hybrid Journal   (Followers: 10)
Géographie et cultures     Open Access   (Followers: 3)

        1 2 3 4 5     

Similar Journals
Journal Cover
BOGA : Basque Studies Consortium Journal
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2325-7628
Published by Boise State University Homepage  [1 journal]
  • A New Reality in Teaching Chemistry: Developing a Virtual Reality
           Intervention to Improve Student Understanding of Concepts of Chemical
           Equilibrium

    • Authors: Jason Ward
      Abstract: The subject of chemistry is a cornerstone of high school science programs and a conceptual understanding of chemical equilibria and Le Chatelier’s Principle continues to be both a fundamental and paradoxically difficult subject for educators and students. This study evaluated the effectiveness of a prototype immersive virtual reality environment. The prototype was designed and built to high school support students’ understanding of the concepts of chemical equilibria and Le Chatelier’s Principle. Data was collected to assess student understanding of the concepts being taught, as well as to evaluate the user experience with the prototype learning environment. Results of data analysis indicate that students were able to enhance their knowledge of chemical equilibrium and that the user experience was positive overall. The study contributes to the fields of educational technology, science education, and design of virtual reality learning environments. By collecting evidence to support the application of immersive virtual reality for this specific subject matter, it also provides a basis for future research utilizing similar environments for teaching and learning of other concepts as well.
      PubDate: Thu, 11 Jul 2024 20:12:07 PDT
       
  • Carbon/Carbon Composites for Next Generation Microvascular Solar Thermal
           Receivers

    • Authors: Matt Zuzelski
      Abstract: Concentrating solar power (CSP) is a method of renewable solar power generation where the sun’s radiant energy is collected by a receiver and converted into thermal energy. This thermal energy is then passed into a heat transfer fluid and either sent to thermal storage, or a steam power plant. One path to better CSP systems is improving the operational envelope of the receiver and heat transfer fluid (HTF) system by utilizing more resilient absorbing materials, different path architectures, and HTFs with higher allowable temperatures.A new carbon/carbon composite is being developed with the potential to function as the absorbing material for a solar thermal receiver. This composite is capable of functioning at higher temperatures than current metallic receivers and could reduce the cost of the supporting structure due to its low density. This composite is readily coupled with microvascular (D < 1mm) channel structures by constructing channels with PLA and melting the plastic out at a later stage. The smaller channel diameters allow for HTF pairings that previously required excessive wall thickness such as supercritical CO2 (sCO2).A series of computational fluid dynamics simulations have been conducted to first understand the operational limits of a single (20mm x 20mm) microscale receiver plate capable of thermal efficiency above 90%. Then, these plates are numbered up to create a full-scale receiver based on a design point from Gemasolar’s flux profile with an estimated 85.04% thermal efficiency.The carbon/carbon composite has been characterized for its thermal, optical, and aging properties. Thermal conductivity has been measured for the composite made with both PAN-based and pitch-based fibers where the pitch-based fibers had through plane thermal conductivity 478% higher than that of the PAN-based fibers. Then, the composite underwent an accelerated aging process via cyclic aging in a high flux solar simulator and isothermal aging in a tube furnace. The optical properties were characterized for the carbon/carbon composite throughout the aging processes.
      PubDate: Thu, 11 Jul 2024 20:12:07 PDT
       
  • Resolving Taxonomic Uncertainty and Clarifying Species Boundaries in the
           Cymopterus Terebinthinus (Apiaceae) Species Complex

    • Authors: Annie M. Taylor
      Abstract: Speciation processes are not well resolved or agreed upon. They are however essential to our general understanding of the evolutionary processes that lead to diversification. Determining the juncture at which a genetically and/or morphologically divergent population becomes a unique species can be challenging, especially with respect to recent divergences and closely related taxa where issues such as incomplete lineage sorting may bring about confounding results. To complicate our theoretical disagreements on species definitions, different models inferring species boundaries may accordingly lump or split species. Using multiple lines of evidence to define species boundaries can greatly improve species inference and preclude erroneous taxonomic groupings. Taxa in the Cymopterus terebinthinus (Apiaceae) species complex have long puzzled botanists owing to their diverse morphologies that are defined as separate varieties. These varieties are often found in generally well-defined geographical subregions of varying habitat types. Additionally, previous phylogenetic studies were interpreted to show that varieties in Cymopterus terebinthinus were not monophyletic. I aim to clarify species boundaries and infer evolutionary relationships in the Cymopterus terebinthinus species complex using phylogenetic inference and species delimitation programs. Additionally, I will compare trends observed in ecological, morphological, and geographical evidence to clade groupings. I apply the genealogical species concept to guide my interpretations of species boundaries in this group. To further explore species boundaries in C. terebinthinus, I sampled from 8-12 populations of the four varieties of C. terebinthinus and 6 populations of C. petraeus. These taxa occur predominantly in the Western United States, ranging from the Rocky Mountains to the Pacific Coast. I then extracted DNA, prepared libraries, and performed target capture with the angiosperms353 bait kit. Libraries were then sent off for next generation sequencing with Illumina. I used HybPiper and HybPhaser to both assemble 353 target genes and filter poorly recovered loci and paralogs. To assemble chloroplast genomes for each sample, I used MITObim as it assembles circular genomes where other assembly methods do not. I used maximum likelihood (RAxML and IQtree) and coalescent based phylogenetic analyses (Astral) in addition to species delimitation analyses (SODA) to infer evolutionary relationships and taxonomic grouping in C. terebinthinus. I also performed analysis of ecological variables including soil and climatic properties to better understand environmental factors related to phylogenetic groupings. I find that in all phylogenetic analyses other than the chloroplast phylogeny, Cymopterus terebinthinus and its varietal infrataxa comprise a monophyletic clade that includes Cymopterus petraeus. The phylogenetic analysis using chloroplast data resulted in a polyphyletic C. terebinthinus and clade assignments that are inconsistent with other biological evidence. I suspect that the nuclear based phylogenies more accurately depict evolutionary relationships in C. terebinthinus. For the majority of samples analyzed, nuclear phylogenies infer clades that largely correspond to previous varietal assignments. Among all four nuclear phylogenetic estimates, six samples did not comprise a clade with their previously assigned taxa. I suspect that various evolutionary factors that often confound phylogenetic analyses, like incomplete lineage sorting and paralogous genes could explain why these six samples did not comprise a clade with their previously identified variety. Additionally, it is possible that these lineages’ recent divergence has resulted in incomplete barriers to gene flow, leading to clade groupings that are not unanimously aligned to previous taxonomic assignment. Overall, clear genetic differentiation is occurring among the currently recognized varieties and might be related to limited seed dispersal in C. terebinthinus. Limited dispersal mechanisms can cause occasional establishment of allopatric populations with restricted gene flow which can lead to diversification. While the phylogenies inferred in this analysis are generally congruent, and genetic structuring among named varieties suggest divergence is occurring, I suspect that speciation is ongoing in this complex.
      PubDate: Thu, 11 Jul 2024 20:12:06 PDT
       
  • Transformer Reinforcement Learning Approach to Attack Automatic Fake News
           Detectors

    • Authors: Chandler Underwood
      Abstract: Misinformation and disinformation disguised in the form of fake news stories have garnered a lot of attention as of late largely because they confuse and often anger the public, leading to a less cohesive society for us all. In response to the ever-growing issue of fake news stories circulating on social media, researchers have crafted various solutions to predict the veracity of stories in hopes of catching illegitimate ones before they can spread. In response to this research area, a newer research area focused on attacking fake news detectors is forming. In this work we have built an adversarial text generator using T5 and reinforcement learning capable of attacking a vast array of fake news detection systems. This work focuses on attacking the state-of-the-art (SOTA) text-based fake news classifier, and we compare our performance directly with the SOTA text-based adversary. Our adversary is more effective than the current SOTA, but we continue to struggle to produce adversarial text that could avoid detection by some other system or human readers.
      PubDate: Thu, 11 Jul 2024 20:12:06 PDT
       
  • Locating Queer Possibilities: LGBTQ+ Folks Negotiating Community and
           Belonging in Idaho, 1969-2011

    • Authors: Rachel Taylor
      Abstract: Americans—regardless of their sexual orientation or home state—generally assume that Idaho is hostile towards queer folks. Linking rurality to homophobia and bigotry, they believe queer people are safer and happier in metropolitan settings with visible queer communities. However, the lived experiences of queer Idahoans reveal that LGBTQ+ people have built communities and found belonging around the state, even outside the state’s most populous city, Boise. Whereas queer people in urban areas like San Francisco historically emphasized the ways they differed from the straight public, queer Idahoans found safety and belonging by emphasizing their similarities with straight people. Through archival research including newspaper editorials written by queer folks and their allies, and oral histories collected from Idahoans throughout the state, this thesis explores how queer Idahoans have negotiated their relationship to the Gem State. Queer Idahoans built community based on their beliefs about place, comparing their communities at city, regional, and state levels to how they imagined queer people lived elsewhere. Some queer people found the state’s atmosphere repressive to LGBTQ+ existence, but others found joy and even liberation in the possibilities available in Idaho. This publication is the first academic thesis about queerness in Idaho, a state often neglected by academic analyses.
      PubDate: Thu, 11 Jul 2024 20:12:05 PDT
       
  • An Experimental and Numerical Investigation of Bimodal Particle
           Distributions for Enhanced Thermal Conductivity in Concentrating Solar
           Power Applications

    • Authors: Dallin Daniel Stout
      Abstract: Solid particles have recently attracted substantial interest as a thermal transport medium in high-temperature energy storage and thermal energy conversion systems due to their ability to operate at high temperatures (up to 1000 °C). This is especially useful in the concentrating solar power (CSP) industry where solid particles are utilized as heat transfer media. Thermal conductivity of particles in CSP is critically important to the overall heat transfer that occurs within a heat exchanger. A cheap and effective avenue to increase the thermal conductivity of a particle distribution is by reducing its porosity by employing 2 differently sized particles. The thermal conductivity can be increased further by applying a load to the particles. At lower temperatures (20-300 °C), previous work has demonstrated a binary particle distribution has superior thermal conductivity. In this work, the thermal conductivities of HSP binary particle distributions under load are explored at ambient temperatures revealing enhanced thermal conductivity. Furthermore, high temperature (from 300-700 °C) analysis of HSP binary particle distributions are also explored with results being that monodispersed distributions yield higher thermal conductivities due to enhanced surface radiation in larger particles. A bimodal distribution increases packed-bed thermal conductivity only up to around ~400 °C at which monodisperse distributions with larger particles then yield higher thermal conductivities. HSP binary particle thermal conductivity results are compared to current models demonstrating inadequate characterization at high temperatures (> 400 °C) due to the dominant heat transfer mechanism of radiation in larger particles at high temperature. These models are implemented in a numerical model of the Gen3 Particle Pilot Plant (G3P3) 20 kWt prototype heat exchanger constructed by Sandia National Laboratory (SNL) where they can then be validated using SNL’s experimental data from the prototype. From SNL’s experimental data, the ZBS thermal conductivity method is confirmed to be accurate at working G3P3 20 kWt prototype heat exchanger temperatures (290-500 °C) at particle and sCO2 mass flow rates of 100 g/s while the Yagi and Kunii thermal conductivity method is not. Utilizing the validated numerical model and ZBS thermal conductivity method, various binary particle mixtures are simulated at working G3P3 20 kWt prototype heat exchanger temperatures revealing increases in the overall heat transfer coefficient of up to 25% in HSP 16/30-40/70 mixtures as well as increases as high as 40% in CP 20/40-70/140 mixtures when compared to monodispersed particle distributions of the respective mixtures’ large particles. Solid particle thermal conductivity enhancement with binary particle distributions in this way has the potential to be a significant step forward towards the CSP industry’s goal of developing the world’s first 1 MWt heat exchanger through the G3P3 program.
      PubDate: Thu, 11 Jul 2024 20:12:04 PDT
       
  • Development of Predictive Rockfall Runout Maps Based on Calibrated
           Rockfall Models

    • Authors: Olivia Tabor
      Abstract: Cliffs formed in columnar jointed basalt have the proper geometry and discontinuities to initiate rockfall events. There are a number of locations in Boise, Idaho that may experience rockfall events from columnar jointed basalt cliffs. Publicly available LiDAR data coupled with site reconnaissance activities were used to develop calibrated two-dimensional rockfall models at a study site in southeast Boise. Photogrammetry was used to determine the volume of seven calibration boulders. The study site, located on Whitney Terrace, consists of a columnar jointed basalt cliff followed by a slope with a subdivision at the toe of the slope.The two common approaches used to generate rockfall models are the Lumped Mass and Rigid Body methods. At this site, the Rigid Body method that incorporated vegetative properties was demonstrated to be the most appropriate method for the rockfall model. Rockfall model calibration was performed by comparing the model-simulated runout distances and geolocations of the seven calibration boulders. The rockfall models were considered calibrated when the location of the calibrated boulder was within one-half of the standard deviation of the mean runout distance of the furthest traveling grouping of simulated rocks. The calibration provided a range of restitution coefficients that were used to develop predictive runout maps for rocks of various masses for the site. The rock sizes used for the predictive runout maps are based on the range of sizes of runout boulders at the site.The predictive runout maps showed site vegetation acts as a barrier or energy dissipater for 50 kg and 100 kg simulated rocks. This mass of rocks had shorter runout distances compared to the 400 kg, 800 kg, and 1500 kg simulated rocks. There was only one location within the study area where large, 800 kg and 1500 kg, simulated rocks would runout past the study area and into the subdivision.Three recommendations are provided for future work. Firstly, since size and shape are important inputs to Rigid Body rockfall models, more effort should be used to accurately determine these properties. Second, publicly available LiDAR data had to be augmented with field data. Future studies should incorporate site-specific LiDAR data collected with either a terrestrial LiDAR scanner or UAV LiDAR. Finally, three-dimensional rockfall models should be used because they incorporate full-site topography and allow simulated rocks to spread downslope and laterally.
      PubDate: Thu, 11 Jul 2024 20:12:04 PDT
       
  • The Effects of Socioeconomic Status on Female Health at St. Benet Sherehog

    • Authors: Anastasia S. Slack
      Abstract: This research investigates the impacts of socioeconomic status on female health at three pre-industrial burial sites in London, England. The analysis compares the female skeletal sample from the parish burial of St. Benet Sherehog (SB), a high-status site, to the cemeteries at the ‘New Churchyard’ at Broadgate (BG) and St. Thomas Hospital (ST), both representing low-status sites during the 17th century. Data for St. Thomas Hospital was made available by the Museum of London’s Wellcome Osteological Research Database and was compared with published data for St. Benet Sherehog and Broadgate to test the hypothesis that women at St. Benet Sherehog exhibited better health outcomes during this period.Most of the results for the pathologies included in this study did not differ between the high-status and low-status samples; however, two differed significantly (p < 0.05) for St. Benet Sherehog (n = 57) when compared to the combination of the other two low-status sites, St. Thomas Hospital and Broadgate (n = 59). The pathologies that are significantly different are dental caries (SB = 40%, ST/BG = 66%; p = 0.009) and non-specific infections (SB= 61%, ST/BG= 34% frequency; p = 0.005). This suggests that socioeconomic status did not impact most of the pathological conditions examined for the three sites included in the study. Though most of the results were not statistically different, these results and historical records provide insight into what life was like in London during the Stuart period.
      PubDate: Thu, 11 Jul 2024 20:12:03 PDT
       
  • Study of Dry Mixing Method to Apply Microbial-Induced Calcite
           Precipitation for Soil Treatment

    • Authors: Ruchi Shrestha
      Abstract: Microbially Induced Calcite Precipitation (MICP) has emerged as a promising technique for soil stabilization, traditionally involving the preparation and mixing of treatment solutions with the soil. However, this thesis explores a novel approach of applying MICP by directly mixing dry chemical compounds into the soil and subsequently adding water. This alternative method offers potential advantages in terms of convenience, ease of implementation, and cost savings.The objective of this research is to investigate the applicability of dry mixing protocols for MICP in soil stabilization. Through comprehensive experimentation, three different dry protocols were developed and applied to five different soils. The effectiveness of these protocols was evaluated by monitoring pH levels, calcium carbonate precipitation, and free swell indexes.The findings demonstrated that the dry mixing protocols resulted in significant calcium carbonate precipitation, comparable to or even surpassing that of the conventional protocol after some rounds of treatment. This research provides valuable insights into the feasibility and efficacy of employing MICP through dry mixing methods.The innovative approach of directly mixing dry chemical compounds into the soil and subsequently adding water presents numerous benefits in terms of convenience and cost-effectiveness. By eliminating the need for preparing and mixing treatment solutions, this approach streamlines the application process, facilitating large-scale implementation.This research contributes to the advancement of MICP techniques and offers a practical alternative for the soil stabilization industry. The new application method has the potential to revolutionize soil stabilization practices, providing a more efficient and effective solution for various geotechnical applications. Further development and implementation of dry mixing protocols in the industry can lead to significant advancements in soil stabilization practices, ultimately enhancing infrastructure durability. Both the conventional protocol and dry protocol-1 exhibited a similar trend of calcite precipitation as the treatment rounds progressed. In both cases, there was a gradual increase in the amount of calcium carbonate with each successive round of treatment. However, it is important to note that while the conventional protocol resulted in the highest overall calcium carbonate precipitation after seven treatment rounds, dry protocol-2 and dry protocol-3 displayed a distinct pattern. These dry protocols initially generated a relatively substantial amount of calcium carbonate precipitation in the early treatment rounds, but as the rounds progressed, the precipitation either declined or showed minimal increments. This observation underscores the differential behavior of the dry protocols compared to the conventional protocol regarding calcium carbonate precipitation throughout the treatment process.
      PubDate: Thu, 11 Jul 2024 20:12:02 PDT
       
  • Virtual Curtain: A Communicative Fine-Grained Privacy Control Framework
           for Augmented Reality

    • Authors: Aakash Shrestha
      Abstract: Augmented Reality (AR) technologies have advanced significantly due to continuous sensing technology and ongoing advancements in mobile technologies such as device portability, camera quality, and system performance. Continuous sensing technology is the key to enabling an AR experience. However, untrusted applications leverage continued access to these sensor data, posing significant privacy concerns for both AR users and bystanders. The rapid growth of AR devices has resulted in broad commercialization and daily use. As a newer field, many users are unaware of the potential privacy risks these AR devices pose due to unintended information leakage. As a result, a privacy control framework is needed to allow users to maintain their privacy while being aware of and educated about people’s privacy concerns.This work aims to develop a privacy control framework with a communicative user interface that allows AR users to configure and communicate privacy social norm cues such as directional blockage, and proximity tolerance to other AR users. We created: (1) a policy configuration module that allows users to embed their privacy needs using a virtual object, (2) a policy capture and registration module to store privacy policies, and (3) a policy enforcement module to enforce privacy policies to limit data leaks caused by continuous-sensing cameras. We have created an interactive policy configuration interface to help users understand the intent behind configuring the policy and its implications, to alert users to the presence of the configured policy based on context information, and to alert users about probable privacy threats. We developed and tested our system using a Samsung S9 Plus, Google’s ARCore platform, TensorFlow, OpenCV, and Unity. Experiments were carried out to evaluate our system’s functionality, efficacy, and performance. Our findings reveal various challenges and opportunities for further research into the privacy regulation of AR systems. We have highlighted the limitations of this research and the possibility of integrating this work with other research to expand toward multi-user scenarios and future directions to broaden the scope and effectiveness of the work. Our framework provides a platform for conducting user studies of communicative and fine-grained privacy control. As a future work, we want to conduct a user study to review users’ perception of the threat, their awareness response to the AR privacy threat, and the impact of communicative policies. We want to test our framework’s effectiveness in improving user awareness of privacy threats.
      PubDate: Thu, 11 Jul 2024 20:12:02 PDT
       
  • Men of the Forgotten War: The Korean War and American Masculinity

    • Authors: Elliott D. Sauerwald
      Abstract: While the Korean War is considered America’s “Forgotten War,” the conflict offers rich insight into an unexplored facet of 1950s masculine gender constructs. This thesis examines how Korean War servicemen deviated from hegemonic masculinity by failing to live up to civilian society’s gender standards, and by unwittingly developing alternative masculinities rooted in their shared wartime experiences. Military masculinity declined after World War II in favor of masculinity centered on nuclear companionate fatherhood. The troops who fought in Korea embodied obsolete masculinity and their service garnered less prestige and public admiration compared to that of their World War II counterparts. Nevertheless, strong homosocial bonds within the military subculture became the basis for the troops’ understanding of masculinity. These masculine bonds were centered on shared experiences, suffering, and brotherly loyalty, which led to the erosion of masculine barriers related to race and sexual orientation. This in turn served to challenge the white, heteronormative masculine hegemony of the civilian world, though fell short of eradicating racism and homophobia within the military. This key piece of Korean War history and gender history has been overlooked in academia, and this thesis serves to begin filling this deficit.
      PubDate: Thu, 11 Jul 2024 20:12:01 PDT
       
  • Using Terrestrial Laser Scanning to Estimate Canopy Structure in Peatland
           Conifers Under a Climate Manipulation

    • Authors: Angela D. Seibert
      Abstract: Northern peatlands are major terrestrial carbon sinks, storing 415 ± 150 Gt of carbon. The composition of peatland vegetation affects this carbon storage capacity, and thus quantifying the vegetation helps to constrain uncertainty in peatland carbon storage estimates. Ground layer vegetation, such as Sphagnum sp. moss contributes greatly to carbon storage capacity. In forested peatlands, the tree canopy structure directly influences peatland solar insolation, soil temperature, and water table levels. Each of these factors impacts the ground layer vegetation. Currently, there is uncertainty about how the peatland tree canopy structure is influenced by elevated levels of carbon dioxide (CO2) and temperature. Providing canopy structural metrics in a nondestructive, spatially comprehensive way across different temperature and CO2 treatments is challenging for traditional methods such as destructive harvesting, Digital Hemispherical Photography (DHP), and allometric regressions. Terrestrial Laser Scanning (TLS) is well-suited to provide non-destructive detailed horizontal and vertical canopy structural information.As part of the Spruce and Peatland Responses Under Changing Environments (SPRUCE) study located in northern Minnesota, USA, we use TLS to evaluate leaf area index (LAI), leaf area density, and leaf inclination angle over time (2015 - 2022) and space of two conifer species, Picea mariana (black spruce) and Larix laricina (eastern larch). The SPRUCE site is in a treed peatland bog under elevated CO2 and temperature conditions. The research questions in this study are 1) How accurately can we predict the LAI of the spruce and larch trees using TLS data' 2) How are the spruce and larch tree canopy structures within 12 SPRUCE plots changing from 2015 - 2022' We expected 1) A volumetric pixel-based model (VCP) will predict LAI with an accuracy of 90% as validated by destructively harvested and DHP LAI estimates 2) Under elevated CO2 and temperature, LAI will increase, leaf area density will decrease in lower canopies, and leaf inclination angles will become more vertical. At the species level, we expected the spruce and larch trees to respond with opposing trends for each metric under the same treatment. Using TLS data, we developed a modified VCP model that uses measures of point contact frequency to estimate LAI, leaf inclination angles, and leaf area density. The results indicate that the model predicts LAI with a coefficient of determination of 0.89 (R2 = 0.89), an RMSE of 0.98, and a normalized RMSE = 0.17. We also found that the model maintains moderate accuracy across voxel size input parameters, suggesting it may maintain accuracy in different treatment conditions where tree structural relationships can change. Our canopy structural results supported the hypothesis that LAI increases more significantly over time under warmer conditions when compared to control plots. Lower canopy leaf area density trends did not support the hypothesis as they showed no statistically significant trends across time. Leaf inclination angle trends through time did not support the hypothesis as they tended to decrease. As temperatures increased across the temperature gradient, leaf angles became more vertical in upper canopies under elevated CO2, leading to inconclusive support for or against the hypothesis. Species data did not support the hypothesis that spruce and larch canopy structures would differ significantly under the same treatments. The larch LAI, however, did not increase as significantly through time as the spruce under elevated CO2 conditions. Additionally, we identified anomalous fluctuations in time series data and proposed potential temperature thresholds where LAI differed the most under ambient or elevated CO2 conditions.The findings from this study suggest that accurately quantifying canopy structure through time may be possible in different environmental conditions and species using TLS. We add support to previous findings that LAI increases more significantly through time under warming conditions compared to control conditions. These results demonstrate TLS’s utility for making species-level canopy structural estimates across horizontal and vertical profiles. Incorporating vertical canopy profile metrics such as leaf area density with LAI data can assist in better explaining how LAI is changing across time and temperature gradients.
      PubDate: Thu, 11 Jul 2024 20:12:01 PDT
       
  • Analysis of Emerging Constituents in an Activated Sludge Treatment
           Facility

    • Authors: Abigail Mae Sigurdson Ryan
      Abstract: Emerging constituents (ECs), or contaminants of emerging concern (CECs), are pharmaceuticals and personal care products (Contaminants of Emerging Concern including Pharmaceuticals and Personal Care Products US EPA, 2023). The primary source of ECs in surface waters is the discharge from wastewater treatment facilities (WWTF) (Kumar et al., 2022). Little is known about the effects treatment processes have on ECs. Research regarding ECs has increased due to the threats they pose to the environment and human health (Khan et al., 2021). This research aimed to expand understanding ECs’ fate through an activated sludge WWTF. This was accomplished by studying concentrations present in the wastewater after each treatment step and testing for statistically significant removals and temporal variation. Eleven constituents from varying drug classes and personal care products were analyzed. The selected ECs were categorized into three groups (1) over-the-counter drugs and personal care products (acetaminophen, ibuprofen, and salicylic acid); (2) common prescription drugs (albuterol, cimetidine, methylphenidate, and theophylline); and (3) specialized prescription drugs (citalopram, primidone, sulfamethoxazole, and warfarin).The sampling process was completed over six months, from February to July 2022, at the Lander Street Water Renewal Facility (LSWRF). This research is unique in that each step in the treatment process was analyzed, including the solids treatment process. EC concentrations were analyzed by liquid chromatography and mass spectrometry (LC/MS).Three major trends in the liquid and solids results were identified: significant reductions, sequestering and release, and continuous release. Significant reductions were exhibited by six constituents: acetaminophen, ibuprofen, salicylic acid, theophylline, and sulfamethoxazole. Reductions were primarily from the biological treatment, and the net reductions ranged from 90.7% to 99.8%. Sequestering and release were exhibited by three constituents (albuterol, cimetidine, and primidone) in that concentrations were reduced following biological treatment, increased after secondary clarification, and varying degrees of reduction through the remaining treatment processes. It is believed that microorganisms sequester and are unable to uptake constituents as they do with phosphorus. Subsequently, the microorganisms release constituents in the secondary clarifier. This resulted in minimal net reductions of the constituents ranging from 13.6% to 58.6%. The continuous release was exhibited by methylphenidate and citalopram from the influent to secondary clarification, which is believed to be due to parent compounds breaking down and releasing them into the system. The solids results did not mirror the liquid's and exhibited a continuous reduction across solids sample locations. This reduction is believed to be due to constituent break down to a metabolite or being biologically transformed into the liquid phase. Citalopram exhibited little net reduction (0.75%), and methylphenidate exhibited a 53.3% net increase. Warfarin was not detected in liquid or solids samples due to low LC/MS sensitivity.Student’s t-tests of temporal variations found four ECs with significantly different liquid concentrations (albuterol, cimetidine, citalopram, and primidone and one EC with statistically different solids concentrations (acetaminophen). It was concluded that temporal variations in albuterol and acetaminophen were likely due to seasonal usage. It is difficult to conclude if the variation is due to wastewater variability or from the temporal variation with this limited dataset. There are no direct indicators for temporal variations of cimetidine, citalopram, and primidone. It was concluded that the ECs’ variation is due to the variability of the wastewater.This research expanded the understanding of ten detected ECs in the LSWRF. It determined four constituents with significant reductions and identified ECs with increased concentration through the facility. Conclusions of temporal variations were also formulated. It is recommended that further research be conducted concerning ECs due to the threat they pose to the environment and human health despite this study answering the identified research questions.
      PubDate: Thu, 11 Jul 2024 20:12:00 PDT
       
  • Impacts of Habitat Type on Individual Prairie Falcon (Falco Mexicanus)
           Movement and Foraging Behavior During the Breeding Season

    • Authors: Eden Sunshine Ravecca
      Abstract: Animal movement is a fundamental characteristic of the ecology, fitness, and evolution of species. Movement behavior can differ significantly among individuals within a population and is driven by a multitude of factors, both intrinsic and extrinsic. How and why animals differ in the way they use habitat is central to species conservation, but relying solely on population-level estimates obscures individual variation and can result in ineffective management strategies. Understanding the mechanistic underpinnings of movement and individual variation among wide-ranging aerial predators is particularly challenging, but remains imperative for conservation, given the critical role of higher trophic levels in ecosystem functioning. I aimed to examine functional habitat use (i.e., why animals move in specific habitats), individual variability, and seasonal variation in movement of breeding Prairie Falcons within the Morley Nelson Snake River Birds of Prey National Conservation Area (NCA) in southwest Idaho. I deployed GPS-GSM telemetry units on adult Prairie Falcons to track their movement during the breeding seasons of 2021 and 2022. Using a two-state hidden Markov model, I quantified individual differences in how 17 Prairie Falcons moved through four structurally different habitat types (sagebrush, non-sagebrush shrub, annual herbaceous and perennial herbaceous) throughout the breeding season. The model categorized their movements while in flight into two behavioral states: (1) ‘canted’, relatively slow and tortuous movement, likely associated with foraging behaviors including prospecting, high-angle stoops, or high-maneuvering hunting; and (2) ‘strafing’, relatively fast and directional movement likely associated with commuting to foraging areas or high-speed, direct-pursuit hunting. We did not detect consistent effects of habitat type on Prairie Falcon movements. Instead, Prairie Falcons varied widely in their functional use across habitat types within the NCA, a dryland ecosystem comprised of sagebrush steppe with varying levels of degradation. Multiple individuals exhibited a decrease in the probability of transitioning from strafing to canted movement states when encountering higher a percentage of native sagebrush cover, while others exhibited an increase in that transition probability as invasive annuals increased. In a canted movement state, many individuals exhibited more directional movement as native sagebrush or native perennials increased. As the brood-rearing period progressed, Prairie Falcons increased the proportion of time spent in a strafing movement state, suggesting increased travel distances or foraging trips when food demand is the highest. The versatility among individual Prairie Falcons was evident across all four habitat types and suggests that these falcons can adapt their behavior, regardless of whether they are in native or nonnative habitats. This hints at the potential resilience of the species and their ability to deal with ongoing habitat degradation. Understanding functional habitat use can inform effective conservation strategies, while individual differences provide insights into the adaptive capacity of Prairie Falcon populations in a rapidly changing world.
      PubDate: Thu, 11 Jul 2024 20:11:59 PDT
       
  • Characteristics of Stream Source Water Contributions and Associated
           Geochemical Signatures Along a Climate and Vegetation Gradient in a
           Glacierized Landscape, Southcentral Alaska

    • Authors: Hannah K. Richardson
      Abstract: Mountain-derived snow and ice melt are essential for global water resources, and over one-sixth of the population depends on melt for freshwater. Rising air temperatures are causing vegetation to replace snow- and ice-covered landscapes and precipitation regimes to change. Collectively, these changes will alter the hydrology of mountain environments, although the exact impacts to hydrologic regimes are poorly understood. The source waters of streamflow (i.e. the proportion of ice melt, snowmelt, rain, and groundwater) dictate the timing and magnitude and affect temperature, sediment, and nutrient fluxes. By examining differences in source waters across basins with varying land covers and precipitation regimes, we can better predict the impact warming temperatures may have on streamflow from both a physical and biogeochemical perspective. Glaciers also physically weather their environment, which increases chemical weathering potential. High chemical weathering rates can impact global carbon cycling, but the extent and net influence of their impact is unknown. This thesis examines shifting source water contributions and chemical weathering patterns in sub-watersheds of the Nellie Juan basin on the Kenai Peninsula in Southcentral Alaska that range in percent glacier cover, elevation, and land cover type. To do so, a variety of geochemical, remote sensing, and modeling techniques were used. I found strong relationships between elevation, source water contributions, and land cover. There were also clear differences in the timing of snow and ice melt contributions to streams between glacierized and non-glacial streams. Groundwater is shown to be a major contributor to streamflow across the basin and may become increasingly important as snowpack and glacier melt decrease. Geochemical analyses show that the main driver of weathering-derived solutes in the region is bedrock type and that the presence of the glacier seems to play only a minor role in weathering. I also find a positive relationship between the proportion of groundwater in streamflow and weathering-derived solutes. This research characterizes the shift from a glacial to a deglaciated landscape through the lens of source water contribution and geochemical weathering regimes. Broadly, these findings can help improve our understanding of how water resources, biogeochemical fluxes, and carbon cycling in glacierized basins are impacted by warming air temperatures.
      PubDate: Thu, 11 Jul 2024 20:11:59 PDT
       
  • IL13Ra1 Drug Discovery

    • Authors: Anton D. Pugel
      Abstract: Parkinson’s Disease (PD) results from the loss of dopaminergic (DA) neurons within the substantia nigra. Current treatments attempt to replace the function of DA neurons instead of preventing their loss. Interleukin 13 receptor alpha 1 (IL13Ra1) was identified to be upregulated in PD. IL13Ra1 knockout mice were observed to be resistant to DA neuron loss under a chronic inflammation model. IL13Ra1 dimerizes with interleukin 4 receptor (IL4R) through the binding of either interleukin 4 (IL4) or interleukin 13 (IL13). In-silico screening was utilized to identify 40 low weight compounds that could target IL13Ra1-IL4R. To identify the drugs’ effects on IL4/IL13 signaling, an A549 cell line was treated with a drug and IL4/IL13 then pSTAT6 levels were quantified. Drug 4 and Drug 26 were observed robustly inhibiting IL4/IL13 signaling. Cytotoxicity was assessed using resazurin and lactate dehydrogenase survival assays. Drug 26 had observed cytotoxicity while Drug 4 had little to no observed cytotoxicity. Drug 4 was determined to be the lead drug for the remaining tests. Compounds structurally related to Drug 4 were also tested. We observed inhibitory effects on IL4/IL13 signaling testing with nicotine, niacin, and NAD. Our data suggests that Drug 4 is a promising nutraceutical candidate for future IL13Ra1 inhibition studies.
      PubDate: Thu, 11 Jul 2024 20:11:58 PDT
       
  • Fair Layouts in Information Access Systems: Provider-Side Group Fairness
           in Ranking Beyond Ranked Lists

    • Authors: Amifa Raj
      Abstract: Information access systems, such as search engines and recommender systems, often display results in ranked order based on their estimated relevance. The fairness of these rankings has received attention as an important evaluation criteria along with traditional metrics capturing constructs such as utility or accuracy. Fairness has many facets, including provider and consumer-side fairness at both group and individual levels. Research on provider-side group fairness involve concerns regarding measurement and optimization of fairness in ranking. Although there are several fair ranking metrics to measure provider-side group fairness based on various “sensitive attributes”, multiple open challenges still exist in this area to consider. Moreover, the fair ranking research mostly focuses on linear layouts when items are displayed in single-column list, often overlooking fairness issues in other layouts such as grid view.In my dissertation, I work on the area of provider-side group fairness in ranking in information access systems. I seek to understand the fairness concepts and practical applications of existing fair ranking metrics and find ways to improve the metrics. My work wilaid researchers and practitioners in selecting fair ranking metrics by pointing out the strengths, limitations, applicability and reliability of the metrics. Moreover, I contribute to the advancement of fair ranking metrics by considering various ranking layout models and further contribute to provider-side group fairness optimization in ranking in widely-used but seldom-studied grid layout.
      PubDate: Thu, 11 Jul 2024 20:11:58 PDT
       
  • Maximizing the Performance of Geocell Reinforced Pavement Bases with
           High-Fines Content Soils Through MICP Treatments

    • Authors: Ajay Kumar Reddy Pisati
      Abstract: Crushed stone and gravel have long been favored for their stability and interlocking properties in Geocell reinforced base course layers of flexible pavement structures. However, their drawbacks, such as depleting reserves, escalating permit costs, environmental compliance, and extensive quarrying impacts, have led researchers to seek alternative options like recycled and on-site materials. Within this framework, utilizing native soil emerges as a promising solution to tackle these challenges. Nevertheless, the grading specifications impose limitations on the fines content allowed in base courses, as determined by the No. 200 sieve. However, the grading specifications pose restrictions on the permissible fines content in Geocell reinforced base courses, as defined by the No. 200 sieve. Extensive research has consistently demonstrated that exceeding the established fines content limit significantly undermines the performance of the soil, particularly in terms of its strength characteristics. This poses a significant challenge when it comes to incorporating native soil into base courses.The primary objective of this study was to enhance the performance of geocell-reinforced pavement bases utilizing soils with high fines content as a substitute for traditional crushed stone and gravel. The focus was on evaluating the effectiveness of combining Geocells and Microbial Induced Calcite Precipitation (MICP) treatments to achieve this objective. The soil characteristics were evaluated through three laboratory tests: the California Bearing Ratio test, the Calcium Carbonate Content test, and the Free Swell Index test. Although the results indicate a decline in performance as fines content increases, this approach widens the possibilities of allowing relatively higher fines content compared to current specifications. In the present investigation, it was observed that despite the potential weakening of calcite bonds during sample preparation or handling, a discernible enhancement in mechanical performance was still evident. This finding suggests that if measures were implemented to preserve the integrity of these calcite bonds, it is anticipated that the mechanical performance would exhibit even greater improvements compared to the values attained in this study.
      PubDate: Thu, 11 Jul 2024 20:11:57 PDT
       
  • Transformation Pathways of Lanthanide-Free Mn-Al-Ga-X Alloys Where X = Co,
           Fe, and Ni

    • Authors: Shane L. Palmer
      Abstract: Ubiquitous rare-earth, (i.e. lanthanide) permanent magnets (PMs) composed of Nd-Fe-B are the strongest PMs on the market. However, limited mineral sources, complex elemental separation, and supply chain volatility have shifted the lanthanides to critical material status. Inexpensive, readily available materials are sought to fill an energy product performance gap to reduce dependency on lanthanide PMs. Frequently, lanthanide PMs are used in applications where their energy products are excessively high. Mn-Al based permanent magnets offer a potential substitute for PM applications which do not require the high energy product of a lanthanide PM. MnAl alloys form a metastable ferromagnetic tetragonal L10-ordered τ-phase. Previous work has shown that adding Ga to the Mn-Al alloy stabilizes the τ-phase. This study investigates the impact of alloying Mn-Al-Ga with 3d transition metals Fe, Co, and Ni on the stability and formation mechanisms of the τ-phase and the resulting magnetic properties. The stabilizing effect of Ga on τ-phase was verified and the ternary alloy’s magnetization was measured up to M2T = 482 kA m−1. The phase transformation from γ2 to τ was observed microscopically. The Co-added alloy did not stabilize the τphase. Two transformation mechanisms were demonstrated for the Fe-added samples, namely a displacive and a diffusional transformation. The magnetization measured higher after the displacive transformation than after the diffusional transformation M2T = 272 kA m−1 and M2T = 200 kA m−1, respectively. The solubility limit of the Ni into τ-phase was exceeded at 3 at.-% and a primitive cubic κ-phase formed. The Ni addition stabilized the τ-phase. The highest magnetization measured for the Ni-added samples was M2T = 416 kA m−1. A new transformation pathway was demonstrated by first annealing a Ni-added alloy at 800 °C for 24 hours which forms nearly single κ-phase, followed by a second anneal at 500 °C for 24 hours at which the τ-phase formed with some remaining κ-phase. This is a new transformation mechanism since it involves a phase reaction from κ to τ. The energy product of Ni-added Mn-Al-Ga alloys exceeded that of the ternary Mn-Al-Ga alloy by a factor of 3. The κ-phase in the Ni-added alloy functions to hinder magnetic domain boundary motion, thus providing a method for magnetic hardening (i.e. increasing the coercivity), and, thus increasing the energy product.
      PubDate: Thu, 11 Jul 2024 20:11:56 PDT
       
  • Risk Assessment and Solutions for Two Domains: Election Procedures and
           Privacy Disclosure Prevention for Users

    • Authors: Kamryn DeAnn Parker
      Abstract: Risk is something that surrounds us each and every day, and learning how to manage risk in different areas is necessary to limit its impact. Two different areas of risk have been identified for this thesis: election day incident infrastructure and user privacy disclosure prevention. We ask if it is possible to leverage information related to risk to create procedures that handle it as an overall issue in order to apply procedures to similar areas of research. Understanding how to identify and prevent these potential areas of risk is important to secure information not just for a single person, but potentially for whole populations. Developing plans of action to prevent severe problems within these areas may improve not only election day incident communication but also personal trust in technology to share private information accurately.This thesis proposes interdisciplinary techniques through qualitative analysis, quantitative analysis, and machine learning tools to build solution frameworks for these unique challenges. In Idaho, communication between election officials is currently broken when dealing with problems on election day. Many times, officials use multiple streams of communication (i.e., text, calls, emails, etc.) to relay information to one another. This fractured process risks the inability to track the progress made on incidents, the potential inefficiency with resolution, and information loss between different communication streams. Therefore, we interviewed election officials from multiple states to assess the need for a centralized incident management and communication tool to assist in incidents. The security of personal information is an important part of the identity of a person or organization. If private information is leaked unintentionally to incorrect audiences, it could reflect poorly on the person or organization. Therefore, we analyze how to prevent the risk of undesirable privacy disclosure using unsupervised and transfer learning techniques to leverage public and private information for prediction.The results pointed favorably to the implementation of a communication tool for election administrators to assist with efficient communication and response to election day problems. Learning outcomes and best practices for preventing unwarranted private information disclosures to users will also be presented. Further analysis is recommended to implement these contributions in real-world environments.
      PubDate: Thu, 11 Jul 2024 20:11:56 PDT
       
  • Effect of Age on the Mechanical Behavior and Molecular Structure of Human
           Meniscus: An Experimental and Computational Analysis

    • Authors: Derek Q. Nesbitt
      Abstract: The knee meniscus is a soft fibrous tissue with a high incidence of injury in older populations. Surgical treatments do not fully restore the functionality of the meniscus, and the meniscus lacks native healing capacity, leading to a 40% increase in the probability of developing osteoarthritis once torn. Meniscus injury prevention is thus paramount to reducing the onset of osteoarthritis. Despite the importance of the meniscus in joint health, its mechanical properties, and how these change with age, are poorly understood. In order to quantify these properties, and how they change with age, we performed uniaxial tensile tests on two age groups of human menisci: under 40 and over 65 years old. We found that tissue from the older donor groups had significantly reduced strength and toughness. We refined the data analysis techniques used in this work to build a free web application to provide to the scientific community to standardize the calculation of mechanical properties found in soft tissue tensile testing, and to provide a convenient tool to reduce the time to analyze data. We then used the mechanical testing data to build and validate a finite element model of tissue failures with continuum damage mechanics. This work showed that using von Mises stress to evolve damage produced excellent fits to the experimental data, and was able to mimic the failure behavior from the previous experiments. Finally, we performed biochemical analysis on the tissue in order to evaluate the changing structure-function relationship with age. This showed changes to the meniscus proteome with age, and that changes to collagen crosslinks correlated to changes to the strength of the tissue. Collectively, this work has detailed potential reasons as to how and why the meniscus becomes more susceptible to tears with age, detailed computational methods to analyze these tears, and provided a tool to further analyze tears of the meniscus and other soft tissues in a lab setting.
      PubDate: Thu, 11 Jul 2024 20:11:55 PDT
       
  • Poly(alkyl Aldehyde)s: A New Class of Closed-Loop Recyclable Plastics

    • Authors: Kyle Arnold Nogales
      Abstract: This dissertation will describe a new class of closed-loop recyclable, self-immolative polymers that undergo selective, complete, and rapid depolymerization in the solid state when triggered. Self-immolative poly(alkyl aldehyde)s are synthesized efficiently in approximately 60% yield using anionic polymerization, which provides access to polymers in accessible lengths ranging from short (Mn value of 2 kDa) to long polymers (Mn value of 5,000 kDa). The physical and thermal properties of the polymers can be tuned rationally by appropriate choice of the aldehyde monomer, with some of the polymers displaying mechanical properties that are similar to traditional plastics. The polymers depolymerize within minutes when the end-cap (i.e., detection unit) is cleaved from the polymer in response to a specific applied signal, where the signals can be selected from base (with a hydrogen end-cap) or fluoride (silyl ether end-cap). Poly(alkyl aldehyde)s also depolymerize readily in the solid state when heated above the degradation temperature, which enables direct, low-energy, closed-loop recycling of polymeric materials by converting plastics to monomers without dissolving the plastics. These favorable properties, coupled with the low cost and wide availability of aldehyde monomers, makes poly(alkyl aldehyde)s promising candidates for replacing certain types of traditional plastics that are difficult to recycle.
      PubDate: Thu, 11 Jul 2024 20:11:55 PDT
       
  • Stalking Victimization: Examining the Influence of Victim-Offender
           Relationship on Victim Emotional Distress

    • Authors: Abigail M. Neef
      Abstract: Stalking victimization is receiving increasing attention in the media and research. Though research knowledge is growing there are still many aspects of stalking victimization that are not fully understood. This study aims to bring together two literatures relating to stalking: research on the role of victim-offender relationship and research on the emotional effects of stalking on victims. Using 2019 Supplemental Victimization Survey data, this study examines the direct relationship between victim-offender relationship and emotional distress. Findings indicate that victims who were stalked by a current intimate partner express more indicators of emotional distress than victims stalked by a personal acquaintance, a formal acquaintance, stranger or someone they were unable to identify. Implications of these findings are discussed.
      PubDate: Thu, 11 Jul 2024 20:11:54 PDT
       
  • Robust Digital Nucleic Acid Memory

    • Authors: Golam Md Mortuza
      Abstract: The rapid growth of data generation from electronic devices has created a critical demand for efficient and sustainable data storage solutions. Traditional storage systems face challenges regarding reliability, energy consumption, and scalability, necessitating the exploration of alternative technologies. This dissertation explores the potential of Deoxyribonucleic Acid (DNA) as an alternative storage medium, along with the associated challenges and potential solutions.This dissertation focuses on Digital Nucleic Acid Memory (dNAM), which utilizes Single Molecule Localization Microscopy (SMLM) to encode and store data within DNA structures called DNA origami. SMLM surpasses the limitations of light’s diffraction limit, enabling the imaging of biological samples at a molecular scale. The robustness and data density of the dNAM algorithm rely heavily on the accuracy and performance of SMLM. Within dNAM, emitter localization and error correction are crucial steps, and this dissertation primarily focuses on these aspects.To improve emitter localization in dNAM, Deep Learning (DL) techniques are employed. This dissertation investigates the impact of multi-emitter situations, where multiple emitters are attached during data acquisition. A neural network based image up-sampling algorithm is developed to progressively increase the resolution of the image. The developed algorithm preserves the emitter centroid position while upsampling it to a higher-resolution image, effectively isolating attached emitters. By extracting the emitter centroid positions from multiple resolutions, the dissertation analyzes the impact of attached emitters on localization accuracy.Additionally, the dissertation addresses the development of an advanced error correction algorithm for dNAM. A preliminary algorithm is initially used to successfully store 20 bytes of digital information in DNA. However, to improve performance and accuracy, the algorithm was enhanced by incorporating the intensity information of each data point. The impact of this addition is thoroughly studied. Furthermore, the error correction algorithm is extended to support arbitrary-shaped 3D/2D DNA origami structures, enabling scalability and versatility.The findings of this research highlight the potential of DNA as a viable storage medium and shed light on the challenges and solutions specific to dNAM. The incorporation of DL techniques for emitter localization demonstrates improved accuracy and efficiency. Moreover, the advanced error correction algorithm enhances the reliability and capacity of dNAM. These outcomes contribute to the overall robustness and efficiency of dNAM as a data storage method.
      PubDate: Thu, 11 Jul 2024 20:11:53 PDT
       
  • Enhanced Hardware Trojan Detection in Chips by Reducing Linearity Between
           Features

    • Authors: Alfred M. S. Moussa
      Abstract: Globally, there has been an increase in demand for System on Chip (SoC) applications, active medical implants, and Internet of Things (IoT) devices. However, due to challenges in the global supply chain, the design, fabrication, and testing of Integrated Circuits are often outsourced to untrusted third-party entities around the world rather than a single trusted entity. This situation presents an opportunity for adversaries to compromise the device’s integrity, performance, and functionality by inserting malicious modifications known as Hardware Trojans (HTs) into the original design. HTs can also create a backdoor in the system for malicious alterations.The problem of hardware trojan is tackled in this thesis through the application of two types of machine learning models. The proposed methodology involves utilizing netlist features of the digital hardware design generated from synthesis and inputting them into the machine learning model. Additionally, measures are taken to prevent interdependence among features, which could lead to overfitting on the training dataset.
      PubDate: Thu, 11 Jul 2024 20:11:53 PDT
       
  • Integrating Climate and Wildfire Education in the Classroom: Development
           and Implementation of K-12 Place-Based Wildfire Educational Modules

    • Authors: Danielle Marquette
      Abstract: In the United States, even though most parents would like their children to be educated about climate change, and most teachers support including climate change in K-12 curriculum, many schools fail to educate students about the causes, consequences, solutions, and personal connections to climate change. Teaching anthropogenic climate change through the local context is one of the most effective methods of teaching climate change. In Idaho the lengthening fire season and the increasing occurrence of larger, more severe fires is a tangible impact of climate change. Yet students from Idaho and other high wildfire risk states in the western United States report that they received little to no wildfire education at the K-12 level. Surveys indicate that K-12 educators do not teach wildfire or climate change for a variety of reasons including lack of confidence, background knowledge, awareness of resources, and understanding of how it relates to grade level standards and subjects.This study was designed to investigate the following questions: 1) Do incoming college students from the western United States receive climate change and wildfire education at the K-12 level' 2) What barriers do K-12 educators report regarding teaching about climate change and wildfire' 3) Does a place-based wildfire education unit at the 4th grade level result in demonstrable increases in climate change and wildfire knowledge' 4) Do teachers who have observed the instruction of wildfire education modules report increased perceived content knowledge, confidence, and willingness to teach wildfire'To assess gaps in K-12 climate change education, and wildfire education, we surveyed Idaho teachers and students to reveal trends in backgrounds, understanding and perceptions of climate change and wildfire education. We surveyed Idaho K-12 educators to assess teachers' perceptions of climate change, climate change education, and hesitations towards teaching climate change. We find that K-12 teachers overwhelmingly support climate change curriculum, but often do not believe that climate change is related to the subjects they teach and do not feel prepared to teach the subject themselves.We surveyed 100 level courses (2019, 2021, and 2022) at Boise State University to assess incoming college students' backgrounds in climate change (n=298). We find that 51% of these students had one or more classes that covered climate change in their K-12 education. Idaho students reported the lowest rate of climate change education (44%). We surveyed two of these same university courses (2021 & 2022) at Boise State University to assess incoming college students’ backgrounds in wildfire education (n=201). Although most students attended high school in fire-prone areas of the western United States, the majority of students received little to no wildfire education.We develop and implement four place-based wildfire educational lessons for K-12 classrooms (https://sites.google.com/boisestate.edu/wildfire-unit/home), and tested the lessons in five different fourth grade classrooms located in southwest Idaho. We gave the students pre and post lesson assessments to measure the effectiveness of each lesson; these lessons were taught to classes with the classroom teacher observing. We surveyed teachers before and after completion of the unit’s instruction to measure their perceived content knowledge, understanding, confidence, and willingness to teach wildfire on their own. While our sample size for a paired analysis of teacher surveys was low (n=7), we found that teachers reported an increase in content knowledge, confidence and willingness to teach about wildfire after observing these lessons being taught. The results were compared for the demographics of urban and rural schools. We hypothesized that students from higher wildfire risk areas might test higher on background (pre-assessment) wildfire knowledge. Three of the schools are categorized as rural and two are categorized as urban, and all rural schools are considered to be in the wildland-urban interface (WUI). Two of the rural schools are located within forested, high wildfire risk areas, and one rural school is located in an agricultural area, adjacent to rangelands.We find that students from rural schools scored lower on their pre-assessments, but had greater improvement between the pre and post-assessments than students from urban schools. A paired t-test of pre and post assessments indicates a statistically significant improvement in student knowledge for lessons 1, 2, and 4 (p < 0.001), but not for lesson 3 (p = 0.058). Cohens d effect sizes for each lesson were large for lesson 1 (1.4), medium for lesson 2 (0.6), small for lesson 3 (0.3), and large for lesson 4 (1.2).This study demonstrates that these K-12 wildfire modules provide both a needed and successful intervention, which can better prepare students to address challenges presented by wildfire and climate change in communities in the western United States.
      PubDate: Thu, 11 Jul 2024 20:11:52 PDT
       
  • Investigating the Causes of a Landslide in Terra Nativa Subdivision and
           Designing Slope Stabilization Using Recycled Plastic Pins

    • Authors: Clara Klamm
      Abstract: In early 2016, five homes along Alto Via Court in the Terra Nativa Subdivision of the Boise Foothills began to move. By May of 2016, the street was closed due to safety concerns, and a few years later, the homes were demolished. Despite the heartbreak and legal action that followed the event, a definitive cause of the landslide was never identified. To date, the site remains vacant. This research aims to investigate the potential causes of the slide to help identify the contributing factors that resulted in the mishap. In addition, the research seeks to design a way to stabilize the slope using recycled plastic pins (RPPs), which are durable, slender pins made from recycled materials that can reinforce a slope by driving the pins into the slope face to intercept the sliding surface. Results of the research found that surface runoff and irrigation were the greatest contributors to slope failure. Using average strength values of RPPs, a variety of reinforcement patterns were investigated. RPPs spaced at 3 feet in-plane and out-of-plane over the distance of the entire slope and RPPs spaced at 2 feet only at the slope crest and toe were both successful in bringing the slope factor of safety (FOS) to above 1.5. The 2-foot spacing is recommended due to having the least amount of reinforced area. Material costs to reinforce the entire area are estimated to be approximately 4 million dollars.
      PubDate: Thu, 11 Jul 2024 20:11:51 PDT
       
  • Conflict: An Autoethnography on Anthropology and Conflict Management

    • Authors: Rachel Koch
      Abstract: Anthropology has many goals, such as understanding our evolutionary origins, distinctiveness as a species, and vast diversity of social existence worldwide and through time. The current study looks at the feasibility of combining the theoretical and applied methods of anthropology and conflict resolution to help future anthropologists do better anthropology. I created an interdisciplinary mixed methods study to gauge the compatibility and possibility of integration. Recruiting participants from a conflict management course on having difficult conversations, pre- and post-discussion surveys were given to measure how well narrative inquiry can help those on differing sides of a difficult conversation understand one another. Additionally, participant observations were used to understand the facilitator's role during these difficult conversations and how that approach works for gaining an insider's perspective. Both the surveys and participant observations were evaluated to demonstrate the importance of theoretical definitions between the two disciplines. The results show that participants acknowledged the importance of understanding different cultures and experiences during difficult conversations. Many of the participants embraced the process of narrative inquiry by having curiosity during difficult conversations. Having these conversations and being able to have these conversations respectfully was valued. This research supports the value of cultural competency in conflict management training and facilitator participation, while also suggesting that anthropology needs to reframe conflict as a potential good. Together, conflict management and applied anthropology can, and should, co-inform inquiry of and between groups in conflict.
      PubDate: Thu, 11 Jul 2024 20:11:51 PDT
       
  • Multiphysics Numerical Modeling for PFAS Transport within Vadose and
           Saturated Zones

    • Authors: Pierrette Iradukunda
      Abstract: The extent and severity of wildfires have increased around the world, necessitating a greater understanding of the consequences of wildfire and post-fire impacts on soil and groundwater. Wildfire suppression techniques like aqueous film-forming foams (AFFF) can also contaminate the soil with per- and polyfluoroalkyl substances (PFAS), which can contribute to human and environmental health concerns. PFAS are dangerous man-made chemical compounds that are persistent, mobile, poisonous, and a major cause of soil and groundwater contamination. In addition to contamination by aqueous film-forming foams, PFAS has accumulated in the environment as a result of being utilized in numerous other goods over time. PFAS are popular because of a number of physiochemical characteristics that make them beneficial in a range of products and industries, furthering their spread. There are several uncertainties about the fate and transport of PFAS in unsaturated zones, as well as how the subsurface groundwater is impacted. This is because of PFAS’s tendency for biotransformation, bioaccumulation, and partitioning, as well as persistence in the environment due to their robust C-F bond. Therefore, concerns are raised about their fate, transport, and adverse impacts on the ecosystem, people, and other biota. In this research, the fate and transport of PFAS (specifically Perfluorooctane Sulfonic acid, PFOS) in both saturated and unsaturated zones are investigated through numerical modeling using the finite-difference method.This study investigates the effect of various transport processes (advection, diffusion, and adsorption) on the fate of PFAS in soil and groundwater. The numerical model is developed to simulate the transport of PFAS in the vadose and saturated soils. After development, the sensitivity of the model results to the spatial and temporal discretization (i.e., selection of time, dt, and space, dz) resolution was analyzed. The results demonstrate very low (less than 2%) sensitivity to dt in the range of 2 to 20 seconds (actually tested at 2, 5, 10, and 20 seconds) and to dz in the range of 0.001 to 0.02 m. (actually tested at 0.001, 0.0025, 0.005, 0.0075, and 0.01 m), respectively. To qualitatively test and verify the model and comprehend the fate and mobility of PFAS in both vadose and saturated zones, a number of scenarios were then explored using the model.
      PubDate: Thu, 11 Jul 2024 20:11:50 PDT
       
  • Exploring Middle School Teacher Perceptions of Virtual Teams as a Delivery
           Mechanism for Professional Learning

    • Authors: Shawna Jensen
      Abstract: Virtual teams are composed of members who work together, transcending time and space through communication technologies to meet shared goals. Many organizations currently use virtual teams to connect employees across the globe. Furthermore, the COVID-19 pandemic forced almost all organizations to shift their employees to hybrid and remote settings. As a result, many workers across the world found themselves shifting to virtual team models. In fact, during the pandemic, teachers found themselves working and learning through virtual teams in addition to teaching remotely. This study was designed to understand how teachers perceived virtual teams and teamwork as an effective modality for delivering professional learning. A basic qualitative study was conducted where seven middle school teachers were interviewed during a 6-to-8-week period in the fall of 2022. This study asked teachers to share firsthand experiences and perceptions of learning through virtual teams and relevant, collaborative, and future-focused.This study's results indicate various perceived benefits and challenges when it came to using virtual teams to deliver professional learning. Participants reflected on their virtual teamwork within and across school buildings through semi-structured interviews. The findings of this study indicate strengths in flexibility and cross-school collaboration while working in virtual teams. The findings also suggest challenges around virtual team structures and community building while working in virtual teams.
      PubDate: Thu, 11 Jul 2024 20:11:50 PDT
       
  • Photophysical Studies of Electronic Structure and Excited-State Dynamics
           of DNA-Templated Cyanine Dye Aggregates

    • Authors: Jonathan Samuel Huff
      Abstract: The invention and widespread adoption of the digital computer in the last century has led to an era of rapid technological advancement that has continued to the present day. This advancement has been sustained to a large degree by continued miniaturization of the electronic components in microprocessors, which results in increased computing power and energy efficiency. In recent years, this strategy has produced diminishing returns because the cost for each incremental size reduction increases as engineers approach the fundamental scaling limits of silicon-based semiconductor devices. Meanwhile, breakthroughs in DNA nanotechnology hold great promise for a new generation of self-assembled nanodevices with applications in nanoscale computing and quantum computing.DNA nanotechnology has emerged as a means to realize directed self-assembly of arbitrary nanostructures that can be functionalized with nanoparticles or dyes to create nanophotonic devices. Of particular interest for computing applications are DNA-templated nanophotonic devices in which dye molecules are assembled into designated spatial configurations in order to control the evolution of optically generated excited states. These excited states, known as molecular excitons, arise from electronic interactions between dyes and are sensitive to the proximity and orientation of dyes relative to one another. To date, a number of DNA-templated excitonic devices such as optical switches, sensors, and energy relays have been demonstrated.The function of the above devices may be enhanced by using DNA to assemble closely-spaced assemblies of dyes, known as dye aggregates, that experience close-range coherent interactions that can drastically alter their properties with respect to the isolated dye. For example, coherent interactions can result in spectral shifts in absorption and fluorescence, modulation of absorption and fluorescence intensity, and facilitate lossless energy transfer. These properties are extremely sensitive to the mutual orientation and separation of the constituent dyes, and the structure-property relationships of DNA templated dye aggregates are an active area of research.Here, we present three photophysical studies of cyanine dye aggregates assembled on DNA. In the first study, we use DNA to assemble heteroaggregate tetramers of the cyanine dyes Cy5 and Cy5.5. We observe that changing the ratio of Cy5 to Cy5.5 within the heteroaggregates produces incremental shifts in their optical absorption frequencies that are reminiscent of alloying. In the second study, the excited-state relaxation kinetics of a DNA templated Cy5 dimer and tetramer are compared to those of the monomer. A combination of steady-state and time-dependent absorption spectroscopies indicate that the relaxation kinetics of the aggregates are dominated by a rapid nonradiative relaxation pathway that is introduced upon aggregation. In the third study, a larger set of DNA-templated Cy5 aggregates are studied, including three dimers, a trimer, and a tetramer. We find that nonradiative quenching persists across these structures. We additionally model the aggregate spectra based on their steady-state absorption and circular dichroism spectra to infer a possible relationship between the relaxation kinetics and structural parameters such as intermolecular separation and the number of dyes comprising the aggregate.
      PubDate: Thu, 11 Jul 2024 20:11:49 PDT
       
  • Understanding Connections Between Public Health Districts and Individuals
           Who Have Recently Been Released from Carceral Systems in Idaho

    • Authors: Ashley Harris
      Abstract: BackgroundGaining a better understanding of the relationship between public health and individuals recently released from the carceral system in Idaho is vital. According to the Federal Bureau of Justice Statistics, in 2020 Idaho had the highest female incarceration rate of all US states at twice the national average (Bureau of Justice Statistics, 2020). The incarceration rate of women and girls has increased nearly 834% in the last 40 years and rates in Idaho follow this trend (Steinberg, 2018). Compared to 62% of women in prisons nationally, 80% of women in local jails report having children under the age of 18 (Glaze and Maruschak, 2016). Idaho has additional cause for concern, as the state has the highest incarceration rate of both non-violent offenders and drug offenders (Bureau of Justice Statistics, 2020).The focus of this work is with individuals who are recently released. With 95% of incarcerated populations projected to be released and 5% currently serving life sentences (Hughes and Wilson, 2003), public health interventions focused on this population are extremely important. Idaho released 4,001 individuals from prison in 2020; this number does not include the re-entry rates for city or county jails (Carson and Cowhig, 2020). These statistics are one aspect of why public health efforts are essential to aid in the transition from incarceration to free living.This project is in alignment with the core mission of those working in public health to improve health in communities served. Additionally, the Idaho Public Health Districts (PHD) have goals of evaluating the programs and interventions for underserved populations. Many of the PHDs in Idaho are working towards public health accreditation with the Public Health Accreditation Board. As a part of this process, the PHDs continue to make efforts towards more equitable health outcomes in our communities.A necessary part of this process is to uplift outcomes for recently released populations–populations who are highly at risk for disparate outcomes involving epidemiology, mental health, substance abuse among others (Prina, 2022). Many individuals in this population are at risk upon release and face challenges including access to identification, housing, employment, healthcare, among other necessities. The purpose of this project is to establish connections between the public health districts and recently released populations.AimThe purpose of this study is to explore the connections between the public health districts and individuals recently released from carceral systems in Idaho. Prior to this study, little was known about the programs and support available to this population from the PHDs. Key-informant interviews were conducted with employees from the seven public health districts and used to describe the existing landscape, barriers, and opportunities. The goal of this project was to document existing connections and use this information as a foundational benchmark for future enhancements to aid in the health and wellbeing of individuals recently released from carceral systems in Idaho.MethodsUsing Grounded Theory, we documented existing connections and used this information as a foundation for enhancing the health and wellbeing of individuals recently released from carceral systems in Idaho. The seven public health district directors in Idaho identified one or more staff members to participate in one 45-60 minute web-based interview. All interviews were conducted via Zoom. The interview protocol was approved by the Boise State University Institutional Review Board under IRB #186-SB22-139. Questions were developed by the researcher and reviewed and piloted with members of the thesis committee. The interview questions were designed to gather information about public health resources, programs, outreach strategies, future opportunities, and efforts to serve individuals disproportionately impacted by carceral systems.ResultsMost respondents (6/7) stated that public health played a significant role in helping individuals transition from the carceral setting to the community. The same number of respondents stated that it is highly important for public health to be involved in these transitions, rating the importance at least an 8 out of 10. Additionally, the same number stated that public health provided many programs, however few specifically targeted this priority population. All reported that the current efforts in place were fairly to highly successful, however many stated that the PHDs had limited ways to measure the success of prospective programs. In regards to needed partnerships, (3/7) stated that there was a need to expand current partnerships. Some respondents (2/7) stated there was a need to expand partnerships for housing efforts. Many (5/7) respondents stated that outreach efforts for this priority population were non-existent in their PHD. None of the respondents stated that the current outreach efforts were adequate with more outreach efforts needed. In regards to networking efforts, almost all (6/7) respondents described their current Board of Health as not being opposed to efforts to reach recently released populations, especially the benefits of such programs.ConclusionThese key-informant interviews are vital to helping us describe the existing landscape, barriers, and opportunities of re-entry programs in Idaho. The current connections between public health and individuals recently released from carceral systems in Idaho is present but weak. There is much room for improvement in efforts to assist this highly vulnerable population including expansion and streamlining of services, additional outreach efforts, establishing measures of success, and continued networking with Boards of Health and community partners.
      PubDate: Thu, 11 Jul 2024 20:11:48 PDT
       
  • Picking Up Steam: A Year Long Infrasonic Record of Steamboat Geyser. Minor
           and Major Paroxysms of the Multi-Phase Eruptions at Steamboat Geyser,
           Yellowstone National Park

    • Authors: Margaret Holahan
      Abstract: The renewed activity of the world’s tallest geyser, Steamboat Geyser (Yellowstone National Park) in 2018, offers the opportunity to utilize long-term continuous infrasound and low-frequency acoustic monitoring to quantify eruptive behaviors. Eruption parameters including onset timing, duration, phase transitions between steam and water, instantaneous sound intensity, eruptive power, energy content, and spectral character, may be used to characterize individual eruption styles and reveal eruption trends. I interpret the character of the acoustic radiation through corroboration of first-hand observations and time-lapse video. I find that infrasound (acoustic energy below 20 Hz) is a particularly effective tool for tracking the evolving eruption style of Steamboat and complements other monitoring techniques data streams including seismicity, outflow temperature, and eyewitness observations. Our experiment produced a 13-month acoustic chronology of Steamboat Geyser, consisting of 23 major eruptions and weeks of precursory minor activity.I identify common trends in Steamboat’s eruptive behaviors. Typically, a major eruption starts with a short (< 1 hour) water-dominated phase, during which jetting of water reaches maximum elevations of 120m. Following the water phase, the eruption transitions to a steam-dominated phase that persists for over 12 hours post-eruption onset. Signal structure in the low infrasound bands (0.5 to 2 Hz) may be used to identify water-to-steam phase transitions in the eruption column. The long-term infrasound record is useful for statistical analysis of eruptions and their timing. Although median major eruption intervals are about 10 days there are some outliers. Unlike other fountain-type geysers whose plumbing system is more isolated, there does not appear to be a relationship between event duration and inter-event timing.
      PubDate: Thu, 11 Jul 2024 20:11:48 PDT
       
  • Hydraulic Conductivity's Impact on Rise of Excess Pore-Water Pressure
           During Seismic-Induced Liquefaction

    • Authors: Holly Gunderson
      Abstract: Liquefaction is a geohazard causing loss of lives and infrastructure around the world. During earthquakes the shaking of the ground may cause a loss of soil strength that results in the settlement of buildings, landslides, failure of earth dams, amongst other hazards (Liquefaction of Soils During Earthquakes, 1985). Liquefaction is the result of a sudden increase in the pore-water pressure (PWP)— referred to as excess pore-water pressure (EPWP)— in loose, saturated, noncohesive, fine soils during seismic shaking. Due to the small pores and low hydraulic conductivity of these soils, the shaking-induced EPWP has less time to dissipate, leading to the loss of the effective stress and, in turn, frictional shear strength of the soil (referred to as liquefaction). If a soil’s hydraulic conductivity could be increased during seismic shaking, ample time would be afforded for EPWP dissipation. A potential theory, introduced by our research team, is that electromagnetic (EM) waves can increase granular soils’ hydraulic conductivity. This increase can potentially lead to liquefaction mitigation.This research investigates the relationship between hydraulic conductivity and EPWP buildup, evaluates EM waves’ impact on the EPWP buildup by modifying hydraulic conductivity, and evaluates the potential of EM-induced liquefaction mitigation.Hydraulic conductivity measurement was performed on natural sand. A series of tests were conducted within a customized box featuring two inner flexible walls (to enable shear deformation) constructed of Plexiglas. Constant-head, ASTM-D2434 (2010) tests were performed to measure the hydraulic conductivity of natural sand samples. All sides of the box containing samples were covered with transparent electrically conductive films, and the medium was excited with electromagnetic waves of various frequencies and power levels— using a radio frequency (RF) signal generator and RF amplifier—to alter the hydraulic conductivity of the soil.To simulate an earthquake, a shaking table, measuring 11.76 cm × 152.4 cm × 3.81 cm (44 in. × 60 in. × 1.5 in.) excited by a programmable signal generator, was utilized. Additionally, a pore-pressure transducer measured the PWP during experiments. Various experiments were used to evaluate the frequencies and acceleration at which liquefaction occurred. The process was repeated, maintaining consistent seismic frequency and acceleration, to induce excitation of the medium and elevate hydraulic conductivity. Concurrently, the rise of EPWP, the occurrence of liquefaction, and the extent of soil settlement were measured and monitored.
      PubDate: Thu, 11 Jul 2024 20:11:47 PDT
       
  • A DNA Aptamer Transducer Designed Toward Rapid Biosensor Development: A
           Novel Approach to Modular Biosensing Platforms

    • Authors: Timothy Z. Hachigian
      Abstract: Aptamer-based biosensors have garnered significant interest due to their versatility in detecting a wide range of analytes across various applications. In this work, a customizable Aptamer Transducer (AT) was introduced as a non-enzymatic and modular duplexed aptamer biosensing platform. The design modularity was accomplished by separating the aptamer input domain from the output domain. The AT was demonstrated to be capable of fully transducing an adenosine signal into arbitrary DNA outputs using a structure-switching aptamer design. The AT design utilized strand displacement reactions via toehold mediated strand displacement with fluorescence based reporting for signal detection. Furthermore, the AT was incorporated with two catalytic amplification networks to further demonstrate its customizability. In a subsequent study, the kinetic behavior and performance of modified ATs were investigated, and a high-throughput approach was developed for modifying ATs toward improving sensitivity based on an aptamer complementary element selection method. Modular biosensing platforms based on duplexed aptamers are advantageous for rapid development of low-cost tests since sensing and output domains can be easily customized, and studies that aim to develop such platforms are beneficial for the future development of selective and sensitive assays.
      PubDate: Thu, 11 Jul 2024 20:11:47 PDT
       
  • Seed Predation by Harvester Ants on Native Grasses and Forbs: Implications
           for Management in a Changing Landscape

    • Authors: Michaela Grossklaus
      Abstract: Vegetation restoration efforts in the sagebrush steppe to date have yielded mixed results. Although many factors contribute to variation in restoration outcomes, seed predation by harvester ants may be an important yet overlooked source of seed loss. Using a selection of grass and forb seeds commonly seeded in local restoration projects, we conducted a field experiment to evaluate whether seed species and spatial arrangement (i.e., distance of seed patches from ant colonies and from each other) affected patterns of seed consumption by Owyhee harvester ants, Pogonomyrmex salinus. To further examine the ecological factors that may affect foraging by harvester ants, we mapped the matrix of vegetation surrounding each harvester ant colony in our experiment and assessed the influences of cheatgrass, Bromus tectorum, cover and Sandberg bluegrass, Poa secunda, cover on seed removal. To provide context for ant seed preferences, we evaluated differences in metrics of seed handling and nutrient content among the seed species in our mix. We found that seeds placed closer to colonies were generally more vulnerable to predation than those placed farther away, and seeds in closely spaced patches were generally more vulnerable than seeds in widely spaced patches. However, these effects differed in strength by seed species, and there was an interaction between the distance from colonies and the distance between patches in terms of seed removal for three of the seed species in our mix. For these species (Indian ricegrass, Munro’s globe mallow, and Great Basin wildrye), the protective effect of distance between patches decreased as distance from the colony increased. Cheatgrass cover and bluegrass cover both had small protective effects on seeds, suggesting that harvester ant foraging behaviors may be shaped by local vegetation cover. We found significant differences in removal rates among the seed species; Indian ricegrass was most preferred by harvester ants, followed by Munro’s globe mallow, Great Basin wildrye, and Palmer’s penstemon. Our seed handling and nutrition data yielded no clear explanations for these preferences. Taken together, these results offer insight into the foraging ecology of harvester ants and may provide context for the implementation and success of future restoration efforts.
      PubDate: Thu, 11 Jul 2024 20:11:46 PDT
       
  • Effects of Discharge and Morphology on Fluvial Sound

    • Authors: Scott J. Gauvain
      Abstract: Rivers, streams, and tributaries play a critical role in the global water cycle and their dispersion of freshwater is essential for widespread human consumption, crop irrigation, waste management, and hydropower generation. Currently, there is a need for innovative, non-invasive, and low-cost methods of surface freshwater discharge gauging. With careful site selection, recording the acoustics produced by streamflow could be used reliably and inexpensively to infer changes in local discharge. An important knowledge gap currently preventing the use of acoustics for stream gauging is the unknown relationships by which stream sounds depend on discharge and stream morphology. To address this, I recorded and characterized sound and infrasound produced by morphologically unique features of the Boise River and Dry Creek in Southern Idaho across multi-year spans. Using a flume and a custom-made adjustable plunge-pool apparatus, I recorded acoustics produced by plunge-pool flow conditions at several scales of discharge and morphology to understand how channel and flow structure influence acoustic properties. While past research has evaluated the effects of discharge and flow structure on acoustic signals separately in either field or laboratory settings, this study investigates these variables jointly in natural, dam regulated, and laboratory fluvial settings. To elucidate the roles of discharge and flow structure on acoustic signals, this study examined sound from eight stream-gauged, morphologically diverse study sites, a discharge-variable morphologically constant flume plunge-pool, and a morphologically variable discharge-constant plunge-pool. Rising downstream depth at a plunge-pool strongly influences both acoustic power and frequency. The initial drop height of a plunging jet and the width of its receiving pool were found to clearly influence acoustic signals, while the width of a plunging jet may also play a role in acoustics. Using sound to infer discharge works well at step features with low width/depth ratios, at high width/depth ratio step features with negligibly changing morphologies, and sometimes works at riffle features and morphologically variable step features. At several field sites, we observed power to increase with flow until a certain discharge threshold, where it either does not change or decreases with rising discharge. With additional studies in morphologically diverse channels such as bedrock and cascade, acoustics may be used as a non-invasive, inexpensive, and accurate hydrometric tool to help fill global surface water gauging gaps.
      PubDate: Thu, 11 Jul 2024 20:11:45 PDT
       
  • Systematic Investigation of Wavy Surface Roughness Profiles Using Common
           Roughness Algorithms

    • Authors: Russell Gray
      Abstract: Roughness is an important parameter in rock engineering. Sine wave-based simulated wavy profiles were used to investigate systematic changes of amplitude and frequency on roughness indices. Profiles were 1000 mm in length with amplitude ranging from 0-10 mm and frequency ranging from 0-10 Hz. The roughness algorithms used were Root Mean Square (RMS), Energy, Sinuosity, Z2, Mean Absolute Angle (MAA), and Modified Divider a-Value. Roughness indices were visualized as contour plots. Similarities of the shapes and spacing of the contours as well as the magnitude of the roughness indices prompted the pairing of RMS and Energy algorithms, Z2 and MAA algorithms, and Modified Divider a-Value and Sinuosity algorithms.Equations were developed to relate the paired roughness algorithms. The process for developing the equations began with producing best-fit surfaces of the roughness indices contour plots and assessing their validity using a tolerable percentage difference of 5% between roughness indices and best-fit surface-derived roughness indices. A translation equation was developed using the paired algorithms' roughness indices and a best-fit surface to the translation equation data. The roughness indices of one of the paired algorithms multiplied by the translation factor yielded the computed roughness indices of the other paired algorithm. The computed roughness indices were compared to the roughness indices using a tolerable percentage of 5%. The equation linking Energy and RMS was successful at estimating the true roughness indices 83.3% of the time for a 5% tolerable difference. The equation linking Z2 and MAA was successful at estimating the true roughness indices 73.8% of the time for a 5% tolerable difference. The equation linking Sinuosity and Modified Divider a-Value was successful at estimating the true roughness indices 86.1% of the time for a 1% tolerable difference.
      PubDate: Thu, 11 Jul 2024 20:11:45 PDT
       
  • Investigating the Relationship Between K-12 Online Special Education
           Teachers' Tpack and Teacher Level Variables: A Convergent Design
           Mixed-Methods Study

    • Authors: Brad R. Garrison
      Abstract: K-12 students with disabilities in the United States are increasingly enrolling in online schools and educational programs. Therefore, K-12 online public and charter school special education (SpecEd) teachers must be prepared to develop and implement individualized educational plans (IEPs) that meet the procedural and substantive requirements of federal and state SpecEd law. Currently, the research literature is lacking in descriptions of instructional techniques and interventions that K-12 online special education teachers (SETs) are implementing in their practice. To address this need, this convergent design mixed-methods study made use of the Technological, Pedagogical, and Content knowledge (TPACK) framework in order to (1) measure the self-assessed TPACK of a sample of K-12 online SETs working at online secondary schools in the United States using a validated survey instrument, (2) investigate the relationship between teacher level predictor variables (age, online teaching experience, education level, and certification status) and the criterion variable of teachers’ TPACK using hierarchical multiple regression techniques, (3) analyze participants qualitative responses to a researcher created questionnaire to locate evidence of participants’ applied TPACK in their self-reported online teaching practices, and (4) look for evidence of convergence and/or divergence between the quantitative and qualitative findings. Standard multiple regression analyses led to the identification of five significant regression models, with criterion variables of (1) mean TPCK, (2) mean TPK, (3) mean TCK, (4) mean PCK, and (5) mean TK. Qualitative data analysis yielded evidence that participants applied TPACK significantly impacted their practice, including through the implementation of 21 out of 22 High Leverage Practices (HLPs). The qualitative data suggested that TPK and PK were factors that most informed participants’ reported online teaching practices. However, little evidence was found for participants’ use of explicit instructional techniques, and several other important HLPs. Additionally, no qualitative evidence was found indicating participants’ use of FBAs and/or development of behavior support plans for students. Mixed methods analysis yielded two convergent findings related to (1) a possible negative relationship between participant age and TK, and (2) strong estimations of participant PK. Two divergent findings related to asymmetries observed between (1) participants’ relatively low self-reported TPK, and the large amount of qualitative evidence suggesting the application of participant TPK in their online teaching practice, and (2) participants’ relatively high self-reported CK, and the lack of qualitative evidence indicating the direct application of participant CK in practice.
      PubDate: Thu, 11 Jul 2024 20:11:44 PDT
       
  • Anything but Bland: Uncovering the Hidden Diversity and Genomic Origin of
           the Threatened Vanilla Spice

    • Authors: Paige Ellestad
      Abstract: Conserving the genetic diversity of crop species and their wild relatives has become a mounting concern as the detrimental effects of climate change, habitat destruction, and genetic erosion are being realized. In this epoch of unprecedented biodiversity loss, the genetic resources needed to improve crops may be at risk of extinction. Even one of the most iconic spices, vanilla, is threatened. Wild populations of the main vanilla producing species, Vanilla planifolia Andrews (Orchidaceae), are being rapidly extirpated due to deforestation and illegal harvesting in their native range. On top of that, clonal propagation methods within cultivated plants are hypothesized to have limited their genetic diversity and decreased their ability to cope with changing environmental conditions and respond to pathogens. Although the vanilla spice is so well-known, there is an unexpected lack of knowledge on its natural history and the ecological and evolutionary processes that have shaped its genetic resources, overall hindering its effective preservation and sustainability. To mitigate this gap of knowledge and help ensure the sustainability of this globally important spice, this thesis aimed to unravel the cultivation and domestication processes that have affected V. planifolia in its cultivated center of origin, Mexico, by answering the fundamental questions: What is the native distribution of V. planifolia' What are its crop-wild relatives and how should their conservation be prioritized' How many vanilla species are cultivated in its center of origin' What domestication processes have shaped its genetic resources' and What is the genomic origin of cultivated vanilla' By answering these questions, this thesis aimed to distinguish between cultivated wild populations, regionally domesticated landraces, and globally domesticated cultivars using a range of approaches, from ecological to taxonomic to comparative phylogenetic to genomic. Analyses used samples collected from vanilla’s cultivated center of origin, Mexico, along with publicly available genetic sequences of Vanilla spp. and a haplotype-phased reference genome of the global “Daphna” cultivar. Results indicated that V. planifolia occurs within a larger distribution than previously expected, from Mexico to northern Brazil, along with ten crop-wild relatives. Occurrences from Mexico encompassed the range of climatic niches exhibited by all occurrences within the entire distribution. Due to this high climatic variability, along with recorded morphological variability in V. planifolia, Mexico was used as a focal region to assess vanilla’s genetic resources. In addition to the predominantly cultivated V. planifolia, two other crop-wild relatives, V. pompona and V. insignis, were found to be cultivated in Mexico based on DNA barcoding of ITS sequences. Ten haplotypes were identified within Mexican accessions of V. planifolia and two were identified within V. pompona. Genetic variability and high levels of genome-wide heterozygosity found within Mexican V. planifolia and the “Daphna” cultivar revealed the occurrence of multiple domestication events and past hybridization within cultivated vanilla. Signatures of introgressive hybridization between V. planifolia and V. pompona were discovered in the “Daphna” cultivar based on comparative chromosomal analyses (e.g. incongruence along the terminal region of chromosome two). A parental origin for the highly heterozygous Mexican accessions, however, has yet to be identified. Considering the high levels of crop-wild relative diversity and the long history of cultivation by different cultural groups in Mexico, these results might provide evidence for regionally cultivated landraces produced from regional domestication events. These may provide important sources of genetic diversity to potentially increase crop resilience in the face of climate change. Findings from this thesis provide a clearer illustration of vanilla’s genetic resources and support the urgent prioritization of biodiversity within this important region through the conservation of V. planifolia’s crop-wild relatives and landraces. These recommendations will help to benefit the livelihoods of farmers, encourage the protection of biological and cultural diversity in Mexico, and ultimately help to ensure the sustainable cultivation of this iconic spice.
      PubDate: Thu, 11 Jul 2024 20:11:43 PDT
       
  • Perspectives on Data for Good: The Emergence of Embodied Data Discourses

    • Authors: Kimberly M. Gardner
      Abstract: In policy sciences, data have traditionally been a tool used by scientists and technocrats to guide state policy. Boundaries around what counts as data generally fall along traditional understandings that data are neutral, objective, and abstracted from individual bodies and experiences. Unfortunately, this understanding of data has a history of perpetuating harmful social hierarchies and, especially in the era of “big data”, mirroring our racial and gendered prejudices (Kitchin, 2014). More recently, however, data have been claimed as a tool by a different kind of actor operating in a unique environment. These new actors, such as some police officers and citizen activists, are negotiating and redefining who is considered a data expert and what we understand data to be.These conversations between traditional and novel understandings of data can be seen within the data for good movement, where actors from a broad range of backgrounds and training come together for the purpose of advancing some notion of social good. Given the history of data perpetuating social harms such as racial discrimination, how can these relatively new understandings of data promote the social good while avoiding data harms' Or, how can data be used to promote the social good' Using the theoretical framework of Data Feminism, the data from participant interviews suggests that shifting understandings of data rely on the emergence of the concept of embodiment. This research highlights the differences in how embodiment manifests in two dissimilar sites: Measure Austin, a non-profit advocacy organization for people of color, and the Big Data Hubs program within the National Science Foundation. The findings suggest that data for social good presents as a space where data advocates negotiate between embodied and disembodied meanings of data and where embodiment is more significant for street level bureaucracy and citizen activists.The dissertation suggests that “embodied data” offers an alternative to the predominance of market-driven data approaches. This research ends with a discussion for how policy studies could benefit from incorporating the concept of embodiment in research related to data systems, including artificial intelligence and machine learning.
      PubDate: Thu, 11 Jul 2024 20:11:43 PDT
       
  • The Cost of Public Mistrust: The Indirect Impact of Mass Shootings Home
           Values

    • Authors: Austin Dey
      Abstract: This thesis examines how mass shootings indirectly impact residential home values across the United States. I hand-collected data on internet search interests around 15 mass shooting events from 2012 to 2019 to measure public concern over mass shootings. Using an event study, I estimate the causal effects of shootings on home values in outlying areas over three years. The results indicate a significant negative relationship between mass shootings and home values two years after an event. This thesis demonstrates that the consequences of mass shootings are not confined to affected areas but have lasting nationwide impacts that reduce economic outcomes across the country.
      PubDate: Thu, 11 Jul 2024 20:11:42 PDT
       
  • Genomic Underpinning of Drought-Associated Phenotypes in a Keystone Shrub
           Species of Western North America

    • Authors: Carlos Dave Contreras Dumaguit
      Abstract: Anthropogenic climate warming and habitat loss threaten species and ecosystem sustainability. Given this, it is urgent to determine whether populations can adapt at a rate sufficient to combat climate change or if human intervention is needed to preserve community ecosystem health. Assessing whether populations could adapt includes inferring whether key phenotypic traits associated to abiotic tolerance are under genetic control and therefore heritable. This thesis focused on the imperiled western North American sagebrush steppe and its widespread eponymous keystone species Artemisia tridentata, (common name, big sagebrush). To determine the adaptive capacity of any population, standing variation for phenotypic traits across its climatic range must be known, allowing for predictions of performance under climate change conditions. For sagebrush populations, we investigated phenotypic trait variation by examining leaf stomata density and size to infer water use efficiency as well as xylem diameter to infer relative risk of embolism, then used comparative genomic analyses to test for signature of natural selection driven by climatic conditions. A common garden greenhouse experiment included 41 seedlings from four populations from Idaho, Nevada, and Utah, sampled across a cline which represent a potential evapotranspiration gradient. If distinct phenotypes were observed under optimum conditions, then this would provide evidence for genetic control of these traits. Light microscopy observations to leaf epidermis and roots were used to record phenotypes associated with performance under drought stress and comparative statistical analysis was conducted to determine phenotypes at population level. This study showed that seedlings from Utah exhibited significantly more dense stomata, a trait associated with increasing transpiration water loss, but greater allocation of large diameter xylem vessels, which would increase the risk of embolism. In contrast, seedlings from Idaho and Nevada exhibited significantly less stomata density, a trait known to decrease transpiration water loss, and greater allocation of small diameter xylem vessels mitigating risk of embolism. The genetic underpinning of phenotypes was investigated by reconstructing 12 individual genomes from three significantly different stomata phenotypes by applying a genome reconstruction approach using Illumina short reads. To test for the signature of local adaptation, single nucleotide polymorphisms were called and a PCA was conducted. The latter analysis returned the same climatic and phenotypic clustering as previously observed with Utah seedlings being separated from those from Idaho and Nevada. Combining phenotypic and genomic data support a hypothesis of genetically controlled phenotypic traits reflecting local adaptation. In all populations, individuals with less dense and smaller-sized stomata increasing drought tolerance as well as smaller diameter xylem with greater tolerance to embolism exist. Future work should explore gene expression responsible for phenotypic trait development under controlled drought, with continued work informing practices to improve ecosystem restoration of big sagebrush and maintenance of this keystone species in the face of climate change.
      PubDate: Thu, 11 Jul 2024 20:11:42 PDT
       
  • Emergence, Evolution, and Outcomes of Community-Based Conservation
           Behaviors in Coastal Systems

    • Authors: Matthew C. Clark
      Abstract: This body of work leverages a variety of quantitative and theoretical approaches to advance our understanding of why individuals adopt community-based conservation behaviors, the impacts those decisions have on natural resources and human wellbeing, and how these insights can be used for practical conservation planning. The first chapter makes a theoretical contribution by fitting data produced from a stylized, agent-based simulation of conservation adoption over time with a set of probabilistic differential equations derived from the theory of diffusion of innovations and cultural evolutionary theory broadly. We use these methods to demonstrate that such a statistical approach can provide accurate inference and prediction around the rates and degree of behavioral adoption within a population even when behavioral uptake is contingent on dynamic feedback processes between human behavior, social learning, and environmental change. The second chapter introduces approximate Bayesian computation as a method for linking hypothesized causal processes in complex land systems with observed changes in the mosaic of land cover. This chapter uses the small-scale agricultural production system in Pemba Island, Tanzania as a case study, identifying that soil degradation is likely the primary driver of agricultural expansion into nearby coral rag forests. The third chapter relies on an extensive data collection campaign in 43 communities across Pemba to measure individuals’ perceptions of mangrove cover change and risk of mangrove theft, and to assess their impact on individuals’ conservation behaviors and preferences. The results of this study indicate that perceptions of mangrove decline drive individual adoption of conservation behaviors and preferences only if they believe that the resultant gains in mangrove cover will not be stolen by outsiders. Conversely, individuals who believe their community mangrove forests are at high risk of theft actually decrease their support for forest conservation in response to perceived forest decline. Lastly, the fourth chapter explores the alignment and misalignment between individual perceptions of mangrove cover change in Pemba and remotely sensed observations of cover change over the same time period. We qualitatively examine the reasons for mismatches in the two data sources and propose a numerical optimization method for considering both sources of information in systematic conservation planning. Together, these studies contribute to the advancement of both theory and methods in studying human behavior within complex social-ecological systems, primarily in small-scale fishing and agricultural communities. Overall, the research presented underscores the importance of understanding human behavior for effectively implementing conservation strategies, and provides valuable insights for informing future conservation planning and interventions.
      PubDate: Thu, 11 Jul 2024 20:11:41 PDT
       
  • Evaluating Learning Geometric Concepts to Generate Predicate Abstract
           Domains in Static Program Analysis

    • Authors: Patrick Chadbourne
      Abstract: Accuracy of static analysis over predicate abstract domains depends on the partitions of predicates. More precise predicates approximate concrete values of program variables resulting in more accurate analysis. Manual reasoning about these partitions must be done on a case-by-case basis and is time consuming and difficult.This work explores learning geometric concepts to automate discovery of predicate domain candidates.The proposed framework uses run-time data from program executions to gather training data for a PAC-learner to generate separating hyperplanes that can be projected onto predicate domains.The thesis implements the framework and performs evaluations of it effectiveness on a set of benchmark programs using various test-case generation tools.This exploratory work discusses several deficiencies in the current state of the art in test case generation, intermediate program representation, and availability of suitable program benchmarks.
      PubDate: Thu, 11 Jul 2024 20:11:40 PDT
       
  • Closed-Loop, Recyclable Plastics From Ethyl Cyanoacrylate

    • Authors: Allison Joy Christy
      Abstract: Ethyl cyanoacrylate, commonly known as super glue, has held a prominent role as an adhesive for decades due to its propensity to rapidly polymerize into poly(ethyl cyanoacrylate) (PECA) under ambient conditions. Ethyl cyanoacrylate monomers and their resulting PECA polymers are bio-friendly, which has allowed them to be used as medical adhesives and to be applied to drug delivery systems. However, PECA has not been used as a plastic material due to the perceived difficulty of handling the ethyl cyanoacrylate monomer. Here, we present a novel PECA plastic that displays thermal stability and tensile strength values that are comparable to atactic poly(styrene) (PS). The high-molecular weight, low-PDI polymer is produced in high yields via a one-pot synthesis under ambient conditions. The PECA plastic can easily be recycled via depolymerization by thermal cracking that allows for the collection of pure monomer. Variation of the pure PECA using spontaneous copolymerization with vinyl comonomers produced new bulk plastic materials that mimic the properties of a range of other kinds of plastics, including silicone elastomers, poly(vinyl chloride) (PVC), poly(ethylene terephthalate) (PET), and high and low-density poly(ethylene) (HDPE & LDPE). This bio-friendly PECA plastic may be a good replacement for traditional non-recyclable, petroleum based plastics, particularly because the monomer already is produced on commercial scale.
      PubDate: Thu, 11 Jul 2024 20:11:40 PDT
       
  • A History of the Hurwitz Problem Concerning Branched Coverings

    • Authors: James Alexander Byars
      Abstract: From a d-sheeted branched covering f : M → N, where M and N are surfaces, one can read off the branch datum
      D(f) = {M, N, d, (A1, . . . , Ar)},
      where Ai = [ei1, . . . , eini] is a partition of d. Furthermore, a relationship between the Euler characteristics between M and N is known, called the Riemann-Hurwitz formula
      𝒳(M) = d𝒳(N) − v(D(f)),
      where v(D(f)) = ∑(eij − 1). The Hurwitz problem asks for a characterization of realizable abstract branching data. More precisely, given an abstract branch datum
      D = {M, N, d, (A1, . . . , Ar)},
      where
      𝒳(M) = d𝒳(N) − v(D),
      how do we know that there is a branched covering f : M → N such that D = D(f)'Hurwitz himself found an answer (at least for N = S2) in terms of permutations α1, . . . , αr ∈ Sd, whose cycle structures realize the given partitions: the cycle structure of αi is Ai.Eighty years later Gersten solved the Hurwitz problem, at least in the case M = N = S2, using cancellation diagrams. He showed that the datum D = {S2, S2, d, (A1, . . . , Ar)}, where 𝒳(S2) = d𝒳(S2) − v(D), that is 2 = 2d − v(D), is realizable if a cancellation diagram exists for a family of words in the group
      Γ = < x1, . . . , xr x1 . . . xr = 1>
      that is determined by the given partitions. The appeal of Gersten's solution lies in the fact that the cancellation diagram depicts the actual branched covering. Thus, his solution is more concrete than the solution of Hurwitz.In this thesis we discuss and compare both solution methods, showcasing everything through examples. We present an example of a realizable branch datum which is used to illustrate methods throughout the paper.
      PubDate: Thu, 11 Jul 2024 20:11:39 PDT
       
  • A Novel Approach to the Nest Site Characterization of Two Species of
           Critically Endangered Vulture in Gorongosa National Park, Mozambique

    • Authors: Rebecca Colleen Bishop
      Abstract: Vulture populations in Africa face extinction as the result of numerous human-generated threats. Existing geographical and ecological knowledge gaps urgently need to be filled to support targeted conservation action across the vast continent, and ideally halt further decline. My study focuses on two Critically Endangered African vulture species - the White-backed Vulture (Gyps africanus) and the especially rare and poorly understood White-headed Vulture (Trigonoceps occipitalis) - in one of the most understudied countries, Mozambique, and from within a protected area, Gorongosa National Park. Formal documentation of breeding densities, nest site characteristics, and timing is limited for both species within Mozambique. To collect baseline nesting data and explore the breeding ecology of these species in Mozambique, I employed a novel survey method using an Unoccupied Aerial System, or drone, to complement an on-foot approach in discovery, monitoring, and characterization of vulture nest sites in 2021 and 2022. In addition to data collection of nest tree attributes and nest positioning, I mapped the vegetation surrounding each nest tree to generate photogrammetric Canopy Height Models for further spatial analysis.I found nest tree species, nest tree height, and nest tree accessibility to be defining nest site characteristics at the 49 White-backed and 27 White-headed Vulture locations I assessed. I defined a nest tree as being accessible to other arboreal wildlife, and therefore potentially susceptible to nest predation events, if a direct route from the ground to the tree could be established through the orientation and height of the surrounding vegetation at the base of the nest tree, and in respect to the lowest branch. Both vulture species nested in trees averaging ~ 21 m in height, but White-backed Vultures exhibited high use of the primarily inaccessible African fan palms, while White-headed Vultures nested primarily in baobab trees, the majority of which were deemed accessible. White-headed Vulture nests were located closer to permanent rivers, but further from roads and human density than nest sites of White-backed Vultures. My Canopy Height Model analysis revealed both species mostly nested in the tallest trees available and in areas with a high proportion (70-81%) of low vegetation (< 5 m) within a 65 m radius around the nest tree. I also observed several patterns in three fine-scale spatial buffers, or areas of vegetation clearance around the nest tree. For example, relative to the lowest branch on the nest tree, White-backed nest trees averaged a larger extent of lower-statured vegetation surrounding the tree than did White-headed nest locations, reinforcing my in-field accessibility assessments. Conversely, at the height of the nest, the majority of White-headed sites had at least 44 m more of open lateral space where the surrounding vegetation did not meet the height of the nest than did White-backed sites. Yet, both species had nest trees that were the tallest within at least a 65 m radius of the nest tree itself. Used together, these key characteristics can be used to inform managers of known locations, identify local threats, and predict new vulture nesting hotspots within the greater Gorongosa ecosystem and potentially elsewhere in southern Africa.
      PubDate: Thu, 11 Jul 2024 20:11:38 PDT
       
  • Influence of Urbanization and Climate on Irrigation Diversions and Return
           Flows in the Lower Boise River Basin

    • Authors: Bridget M. Bittmann
      Abstract: The western US is facing both the rapid urbanization of agricultural lands and a changing climate, producing subsequent changes to irrigation water demand and availability. Adaptive water management requires knowledge regarding how and why water usage and availability is changing; however, managers often do not possess the tools or resources for the necessary analysis. These environmental changes are also place-based, meaning that water managers cannot directly use studies from other basins to actively manage theirs. Co-produced, actionable research can help fill this knowledge gap and provide the necessary information for adaptive management. The Lower Boise River Basin (LBRB) in southwestern Idaho is one location that is facing both the pressures of urbanization and climate change and where water managers need the long-term analysis to contextualize how or if these mechanisms are affecting the irrigation system. This research studied both irrigation water diversions and irrigation drain return flow. The goals of this research were to 1) understand how diversions and drains in the LBRB have changed from 1987 to 2020 and 2) to quantify the effects of urbanization, annual weather, and reservoir availability on diversion and drain flows. We used a Mann Kendall test to quantify changes in discharge through time and used variations of a Bayesian Generalized Linear Mixed Effects Model to quantify the effects of predictor variables on annual discharge for both diversions and drains. Generalized linear models were also used for the diversions to understand the effects of predictor variables at the individual diversion scale. Diversions had variable results across the basin with a mix of increasing (18%), decreasing (35%), and no trend in discharge through time (47%). Forty percent of drains that return irrigation water back to the Boise River had decreasing trends through time while 60% had no significant change. Diversions had variable responses to urbanization, which could be the result of both human decision-making and complex changes in surface water-groundwater interactions associated with urbanization. Drain flows decreased with urbanization more uniformly, which is an indication that drain flows are supplied by discharge from the shallow aquifer system while diversions are more controlled by human decision-making. Increased evapotranspiration increased both diversion and drain discharge while increased temperatures decreased discharge for both, and precipitation played less of a role in the system. Storage water use from the reservoir system had the most consistent positive effect on diversions across models, demonstrating how the reservoir system supplies water during the irrigation season and helps offset the lack of precipitation in this semi-arid region. Increased diversion flows also increased drain flows, demonstrating that seepage loss from canals feeds the groundwater and drain system. This analysis showed complexities across the basin for both drains and diversions and supports the need for localized research to help water managers with adaptive management.
      PubDate: Thu, 11 Jul 2024 20:11:38 PDT
       
  • Association of Lockdown Policies with COVID-19 Early Case Growth Rates in
           the United States

    • Authors: Anna Barefield
      Abstract: The COVID-19 pandemic has impacted essentially the entire globe, infecting over 755 million people worldwide and resulting in over 6.8 million deaths to date. Different countries have had varying levels of success in managing the spread of the pandemic, and the success or lack thereof could be explained by the impact of government intervention, such as lockdown policies, mask mandates, and social distancing advisories. The United States responded particularly poorly to the early pandemic outbreak as compared to other similar countries, due to its lack of coordinated planning to implement effective policies, with large variations in action taken by each state. Therefore, it is of interest to understand how varying levels of policy implementation are related to early COVID-19 outcomes. In this study, we consider whether the state's emergency declaration was before the national level and the number of other lockdown policies that are in effect on a given day. We also disaggregate the effect of other lockdown policies into between-state and within-state effects. Then we use linear mixed effects model to examine the association between early COVID-19 growth rates and lockdown policies during the initial lockdown period after accounting for statewide demographic variables. Due to multicollinearity issues between demographic variables, we present two final models that account for these variables separately.
      PubDate: Thu, 11 Jul 2024 20:11:37 PDT
       
  • Interaction Between Temperature and Substrate Moisture on Survivability of
           a Substrate Burrowing, Air-Breathing, Non-Native Fish, Oriental
           Weatherfish, (Misgurnus anguillicaudatus), in Idaho, USA

    • Authors: Randall L. Benedict
      Abstract: Success of invasive species depend on how well the species acclimates and adapts to new local conditions. Tolerance to extreme environmental conditions such as temperature and drought are major factors in determining invasion risk, establishment, and spread of a non-native species. As predicted by numerous climate models, southwestern Idaho is to become hotter, with temperatures reaching 40 °C for several days during the summer and will have less snowpack with more winter rain causing an increase in stream temperatures and intermittency. In this study, I tested survivability of Misgurnus anguillicaudatus (oriental weatherfish) using predicted (based upon climate models) temperatures and substrate moisture dryness in a laboratory setting. I used a two-by-two factorial experiment using two temperatures (30 and 40 °C) and two soil moisture levels (≤ 20% and ≥50% volumetric moisture content (VMC)) to test survivability under these conditions. At a high substrate moisture level (≥ 50% VMC) and moderately high temperature (30 °C), oriental weatherfish survived up to 184 days, long enough to make it to the next rain event, in November. In both high substrate moisture (≥50% VMC) and low substrate moisture (≤20% VMC), at 40 °C, the fish did not survive for more than a few days. At 30 °C and dry substrate (≤ 20% VMC), oriental weatherfish survived up to 25 days. Tolerance of a moderate air temperature of 30 °C and soil moisture of ≥50% VMC, is a strong indicator of range expansion ability and invasive risk by the burrowing, air-breathing fish, M. anguillicaudatus. This knowledge can be used by managers to better predict range expansions under a changing climate.
      PubDate: Thu, 11 Jul 2024 20:11:37 PDT
       
  • Robust Control of Contact-Rich Robots via Neural Bayesian Inference

    • Authors: Nardos Ayele Ashenafi
      Abstract: We provide several data-driven control design frameworks for contact-rich robotic systems. These systems exhibit continuous state flows and discrete state transitions, which are governed by distinct equations of motion. Hence, it is difficult to design a single policy that can control the system in all modes. Typically, hybrid systems are controlled by multi-modal policies, each manually triggered based on observed states. However, as the number of potential contacts increase, the number of policies can grow exponentially and the control-switching scheme becomes too complicated to parameterize. To address this issue, we design contact-aware data-driven controllers given by deep-net mixture of experts. This architecture automatically finds a switching-control scheme that can achieve the desired overall performance of the system, and a gating network, which determines the region of validity of each expert, based on the observed states.Additionally, we address the adverse effects of model uncertainties in the control of contact-rich robots. Lack of accurate environmental models can misrepresent the effects of contact forces on the system. Policies designed from such models can lead to poor performance or even instability. In particular, we demonstrate the effects of system parameter uncertainties and measurement errors on the overall performance of the system. Then, we design data-driven stochastic controllers that combine the stability properties of passivity-based control with the robustness properties of Bayesian learning.
      PubDate: Thu, 11 Jul 2024 20:11:36 PDT
       
  • Re-Mediating Nature: Environmental Entropy, Urban Parks, and the Boise
           River Greenbelt

    • Authors: Quinn Zachary Anderson
      Abstract: Urban greenspaces are integral to the healthy functioning of a city. They provide heat relief, flood prevention, act as sites of community engagement and creation, and are home to charismatic flora and fauna, to name just a few of their roles. However, this importance has not translated to scholarly analysis. This thesis aims to address this shortcoming in several ways. Firstly, it introduces the typology of environmental entropy, a framework of analysis that recontextualizes greenspaces as blended landscapes, where nature and culture and human and nonhuman agency equilibrate. Using environmental entropy, the rest of the paper examines urban parks from a historical perspective, tracking the existing scholarship, examining a prominent example of urban park design in the Boise River Greenbelt, and then examines more contemporaneous and international park designs. Using environmental entropy allows for historians, scientists, and policymakers to more clearly communicate their goals and plans for urban greenspaces, which in turn will allow these spaces to cater to the needs of the modern city and its diverse citizens.
      PubDate: Thu, 11 Jul 2024 20:11:35 PDT
       
 
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  Subjects -> SOCIAL SCIENCES (Total: 1648 journals)
    - BIRTH CONTROL (22 journals)
    - CHILDREN AND YOUTH (262 journals)
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    - SEXUALITY (56 journals)
    - SOCIAL SCIENCES (937 journals)
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    - WOMEN'S STUDIES (175 journals)

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Showing 1 - 136 of 136 Journals sorted alphabetically
A contrario     Full-text available via subscription   (Followers: 2)
Aboriginal and Islander Health Worker Journal     Full-text available via subscription   (Followers: 8)
About Performance     Full-text available via subscription   (Followers: 9)
Academic Journal of Interdisciplinary Studies     Open Access   (Followers: 4)
Access     Full-text available via subscription   (Followers: 27)
ACCESS: Critical Perspectives on Communication, Cultural & Policy Studies     Full-text available via subscription   (Followers: 13)
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 19)
Acta Scientiarum. Human and Social Sciences     Open Access   (Followers: 7)
Acta Universitatis Sapientiae, Philologica     Open Access   (Followers: 3)
Actes de la Journée des Sciences et Savoirs     Open Access   (Followers: 1)
Adelphi series     Hybrid Journal   (Followers: 13)
Administrative Science Quarterly     Full-text available via subscription   (Followers: 221)
Administrative Theory & Praxis     Full-text available via subscription   (Followers: 8)
Adultspan Journal     Hybrid Journal   (Followers: 2)
Advances in Appreciative Inquiry     Hybrid Journal   (Followers: 1)
Advances in Southeast Asian Studies     Open Access  
Advocate: Newsletter of the National Tertiary Education Union     Full-text available via subscription   (Followers: 1)
Africa Spectrum     Open Access   (Followers: 18)
African Affairs     Hybrid Journal   (Followers: 69)
African Research Review     Open Access   (Followers: 5)
Akademik Hassasiyetler     Open Access  
Aleph : UCLA Undergraduate Research Journal for the Humanities and Social Sciences     Open Access   (Followers: 3)
Aletheia : Revista de Desarrollo Humano, Educativo y Social Contemporáneo     Open Access  
Algarrobo-MEL     Open Access   (Followers: 1)
Ambigua : Revista de Investigaciones sobre Género y Estudios Culturales     Open Access   (Followers: 1)
American Communist History     Hybrid Journal   (Followers: 21)
Anais Eletrônicos do Congresso Epistemologias do Sul     Open Access  
Anales de la Universidad de Chile     Open Access  
Análisis     Open Access  
Analysis     Full-text available via subscription   (Followers: 2)
Andamios. Revista de Investigacion Social     Open Access  
Anduli : Revista Andaluza de Ciencias Sociales     Open Access  
Ankara University SBF Journal     Open Access   (Followers: 2)
Annals of Humanities and Development Studies     Open Access   (Followers: 8)
Annals of the American Academy of Political and Social Science     Hybrid Journal   (Followers: 45)
Anthropocene Review     Hybrid Journal   (Followers: 9)
Apuntes : Revista de Ciencias Sociales     Open Access   (Followers: 1)
Arbejdspapirer : Professionshøjskolen Metropol     Open Access  
Arbetsliv i omvandling     Open Access   (Followers: 1)
Arbor     Open Access  
Argomenti. Rivista di economia, cultura e ricerca sociale     Open Access   (Followers: 4)
Argumentos : Revista do Departamento de Ciências Sociais da Unimontes     Open Access  
Around the Globe     Full-text available via subscription  
Articulo - Journal of Urban Research     Open Access   (Followers: 7)
Asia Pacific Journal of Sport and Social Science     Hybrid Journal   (Followers: 4)
Asian Journal of Quality of Life     Open Access   (Followers: 3)
Asian Journal of Social Science     Hybrid Journal   (Followers: 19)
Asian Journal of Social Sciences and Management Studies     Open Access   (Followers: 6)
Asian Research Journal of Arts & Social Sciences     Open Access  
Asian Social Science     Open Access   (Followers: 5)
Astrolabio, Nueva Época     Open Access  
Australasian Review of African Studies, The     Full-text available via subscription   (Followers: 2)
Australian Aboriginal Studies     Full-text available via subscription   (Followers: 10)
Australian and Aotearoa New Zealand Psychodrama Association Journal     Full-text available via subscription   (Followers: 5)
Australian Journal of Emergency Management     Full-text available via subscription   (Followers: 19)
Australian Journal on Volunteering     Full-text available via subscription   (Followers: 1)
Australian Population Studies     Open Access   (Followers: 1)
Bandung : Journal of the Global South     Open Access   (Followers: 1)
BARATARIA. Revista Castellano-Manchega de Ciencias sociales     Open Access  
Basic and Applied Social Psychology     Hybrid Journal   (Followers: 46)
Bayero Journal of Pure and Applied Sciences     Open Access  
Behavioural Sciences Undergraduate Journal     Open Access   (Followers: 3)
Big Data & Society     Open Access   (Followers: 43)
Bingöl Üniversitesi Sosyal Bilimler Enstitüsü Dergisi     Open Access  
Black Sea Journal of Public and Social Science     Open Access   (Followers: 1)
Black Women, Gender & Families     Full-text available via subscription   (Followers: 22)
BMC Medical Ethics     Open Access   (Followers: 19)
Bodhi : An Interdisciplinary Journal     Open Access   (Followers: 1)
Body Image     Hybrid Journal   (Followers: 18)
BOGA : Basque Studies Consortium Journal     Open Access   (Followers: 2)
Border Crossing : Transnational Working Papers     Open Access   (Followers: 3)
Borderlands Journal : Culture, Politics, Law and Earth     Open Access   (Followers: 4)
Brain and Cognition     Hybrid Journal   (Followers: 41)
British Review of New Zealand Studies     Full-text available via subscription   (Followers: 2)
Bulletin de l’Institut Français d’Études Andines     Open Access   (Followers: 1)
Caderno CRH     Open Access   (Followers: 1)
Cadernos de Saúde     Open Access  
Cahiers Jean Moulin     Open Access   (Followers: 23)
California Italian Studies Journal     Full-text available via subscription   (Followers: 7)
California Journal of Politics and Policy     Open Access   (Followers: 3)
Cambio : Rivista sulle Trasformazioni Sociali     Open Access   (Followers: 1)
Campos en Ciencias Sociales     Open Access  
Canadian Journal of Educational and Social Studies     Open Access   (Followers: 4)
Canadian Journal of Human Sexuality     Hybrid Journal   (Followers: 1)
Canadian Social Science     Open Access   (Followers: 11)
Caradde : Jurnal Pengabdian Kepada Masyarakat     Open Access  
Carbon Capture Science & Technology     Open Access   (Followers: 7)
Caribbean Studies     Full-text available via subscription   (Followers: 12)
Catalyst : A Social Justice Forum     Open Access   (Followers: 10)
Challenges     Open Access   (Followers: 2)
Changing Societies & Personalities     Open Access   (Followers: 2)
Children & Young People Now     Full-text available via subscription   (Followers: 4)
China Journal of Social Work     Hybrid Journal   (Followers: 2)
Chinese Journal of Social Science and Management     Open Access  
Chinese Studies     Open Access   (Followers: 6)
Ciência ET Praxis     Open Access  
Ciencia y Sociedad     Open Access   (Followers: 1)
Ciencia, Cultura y Sociedad     Open Access  
Ciencias Sociales y Educación     Open Access   (Followers: 1)
Circular Economy and Sustainability     Hybrid Journal   (Followers: 4)
Ciudad Paz-ando     Open Access  
Civilizar Ciencias Sociales y Humanas     Open Access   (Followers: 1)
Claroscuro     Open Access   (Followers: 1)
CLIO América     Open Access   (Followers: 3)
Cogent Social Sciences     Open Access   (Followers: 2)
Cognitive and Behavioral Practice     Hybrid Journal   (Followers: 13)
Communication, Politics & Culture     Open Access   (Followers: 16)
Communities, Children and Families Australia     Full-text available via subscription   (Followers: 4)
Community Empowerment     Open Access   (Followers: 1)
Comprehensive Results in Social Psychology     Hybrid Journal   (Followers: 3)
Comuni@cción     Open Access  
Connections     Open Access  
Contemporary Journal of African Studies     Full-text available via subscription   (Followers: 4)
Contemporary Social Science     Hybrid Journal   (Followers: 10)
Contribuciones desde Coatepec     Open Access  
Corporate Reputation Review     Hybrid Journal   (Followers: 4)
Creative and Knowledge Society     Open Access   (Followers: 10)
Critical Psychology     Hybrid Journal   (Followers: 7)
Critical Studies on Terrorism     Hybrid Journal   (Followers: 58)
CTheory     Open Access  
Cultura Latinoamericana     Open Access   (Followers: 1)
Cultural Trends     Hybrid Journal   (Followers: 15)
Culturas. Revista de Gestión Cultural     Open Access  
Culture Scope     Full-text available via subscription   (Followers: 2)
Current Research in Social Sciences     Open Access  
Debats. Revista de cultura, poder i societat     Open Access  
Demographic Research     Open Access   (Followers: 15)
Derecho y Ciencias Sociales     Open Access   (Followers: 1)
Desenvolvimento em Questão     Open Access  
Developing Practice : The Child, Youth and Family Work Journal     Full-text available via subscription   (Followers: 16)
Development     Hybrid Journal   (Followers: 20)
Didáctica de las Ciencias Experimentales y Sociales     Open Access  
DIFI Family Research and Proceedings     Open Access  
Digital Geography and Society     Open Access   (Followers: 1)
Discourse & Society     Hybrid Journal   (Followers: 60)
Discover Social Science and Health     Open Access   (Followers: 18)
Distinktion : Scandinavian Journal of Social Theory     Hybrid Journal   (Followers: 10)
Divulgatio : Perfiles Académicos de Posgrado     Open Access  
Drustvena istrazivanja     Open Access  
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 13)
Dynamics of Asymmetric Conflict: Pathways toward terrorism and genocide     Hybrid Journal   (Followers: 13)
E-l@tina : Revista Electrónica de Estudios Latinoamericanos     Open Access  
Eastern Africa Social Science Research Review     Full-text available via subscription   (Followers: 5)
Eat, Sleep, Work     Open Access   (Followers: 3)
EAU Heritage Journal Social Science and Humanities     Open Access   (Followers: 2)
Economic and Regional Studies / Studia Ekonomiczne i Regionalne     Open Access  
Educación, Lenguaje y Sociedad     Open Access  
Education, Business and Society : Contemporary Middle Eastern Issues     Hybrid Journal   (Followers: 1)
EFB Bioeconomy Journal     Open Access   (Followers: 1)
Égypte - Monde arabe     Open Access   (Followers: 4)
Éire-Ireland     Full-text available via subscription   (Followers: 8)
Electoral Studies     Hybrid Journal   (Followers: 46)
Emotions : History, Culture, Society     Full-text available via subscription  
Émulations : Revue de sciences sociales     Open Access  
Encuentros Multidisciplinares     Open Access  
Enfoques     Open Access  
Entramado     Open Access  
Equality, Diversity and Inclusion : An International Journal     Hybrid Journal   (Followers: 25)
Equidad y Desarrollo     Open Access  
Espace populations sociétés     Open Access   (Followers: 1)
Estudios digital     Open Access  
Estudios Sociales     Open Access  
Etcétera : Revista del Área de Ciencias Sociales del CIFFyH     Open Access  
Ethics and Social Welfare     Hybrid Journal   (Followers: 24)
Ethnic and Racial Studies     Hybrid Journal   (Followers: 49)
Ethnobotany Research & Applications : a journal of plants, people and applied research     Open Access   (Followers: 3)
Études canadiennes / Canadian Studies     Open Access   (Followers: 3)
Études rurales     Open Access   (Followers: 2)
EUREKA : Social and Humanities     Open Access  
Eureka Street     Full-text available via subscription   (Followers: 4)
European Journal of Futures Research     Open Access  
European Journal of Social Psychology     Hybrid Journal   (Followers: 44)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Review     Hybrid Journal   (Followers: 20)
European Review of Social Psychology     Hybrid Journal   (Followers: 16)
European View     Hybrid Journal   (Followers: 1)
European Yearbook of Minority Issues Online     Hybrid Journal   (Followers: 5)
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
ExT : Revista de Extensión de la UNC     Open Access  
Fa Nuea Journal     Open Access  
Family Matters     Full-text available via subscription   (Followers: 9)
Family Process     Partially Free   (Followers: 11)
Family Relations     Partially Free   (Followers: 12)
Family Science     Hybrid Journal   (Followers: 1)
Fields: Journal of Huddersfield Student Research     Open Access  
Finnish Journal of Social Research      Open Access   (Followers: 6)
Flaubert     Open Access   (Followers: 1)
Formation emploi     Open Access  
FORO. Revista de Ciencias Jurídicas y Sociales, Nueva Época     Open Access   (Followers: 2)
Forskning & Forandring : Research and Change     Open Access  
Forum Ilmu Sosial     Open Access  
Forum Qualitative Sozialforschung / Forum: Qualitative Social Research     Open Access   (Followers: 9)
Fourth World Journal     Full-text available via subscription  
Fudan Journal of the Humanities and Social Sciences     Hybrid Journal   (Followers: 2)
Funes. Journal of Narratives and Social Sciences     Open Access  
Future Times     Full-text available via subscription   (Followers: 1)
Ganesha Journal     Open Access  
Genocide Studies and Prevention     Full-text available via subscription   (Followers: 9)
Genocide Studies International     Hybrid Journal   (Followers: 10)
Géographie et cultures     Open Access   (Followers: 3)

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