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  Subjects -> EDUCATION (Total: 1763 journals)
    - ADULT EDUCATION (24 journals)
    - COLLEGE AND ALUMNI (9 journals)
    - E-LEARNING (22 journals)
    - EDUCATION (1475 journals)
    - HIGHER EDUCATION (118 journals)
    - INTERNATIONAL EDUCATION PROGRAMS (4 journals)
    - ONLINE EDUCATION (28 journals)
    - SCHOOL ORGANIZATION (12 journals)
    - SPECIAL EDUCATION AND REHABILITATION (34 journals)
    - TEACHING METHODS AND CURRICULUM (37 journals)

HIGHER EDUCATION (118 journals)                     

Showing 1 - 118 of 118 Journals sorted alphabetically
+E Extension     Open Access   (Followers: 1)
AASHE Insights     Full-text available via subscription   (Followers: 3)
American Journal of Engineering Education     Open Access   (Followers: 9)
American Journal of Pharmaceutical Education     Full-text available via subscription   (Followers: 7)
Arquivos do Museu Dinâmico Interdisciplinar     Open Access  
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asian Association of Open Universities Journal     Open Access  
AUDEM : The International Journal of Higher Education and Democracy     Full-text available via subscription   (Followers: 10)
Aula Universitaria     Open Access  
Bangladesh Journal of Medical Education     Open Access   (Followers: 2)
Campus Virtuales     Open Access   (Followers: 1)
Canadian Medical Education Journal     Open Access   (Followers: 8)
Chronicle of Higher Education The     Full-text available via subscription   (Followers: 19)
College Student Journal     Full-text available via subscription   (Followers: 8)
Critical Studies in Teaching and Learning (CriSTaL)     Open Access   (Followers: 10)
Debate Universitario     Open Access  
Educate~     Open Access   (Followers: 4)
Educational Research in Medical Sciences Journal     Open Access   (Followers: 4)
EDUMECENTRO     Open Access  
ENGEVISTA     Open Access   (Followers: 1)
Enhancing Learning in the Social Sciences     Open Access   (Followers: 7)
Ethics in Science and Environmental Politics     Hybrid Journal   (Followers: 2)
European Journal of Higher Education     Hybrid Journal   (Followers: 52)
Excellence in Higher Education     Open Access   (Followers: 36)
Extensión en red     Open Access  
Formación Universitaria     Open Access   (Followers: 4)
Higher Education for the Future     Full-text available via subscription   (Followers: 2)
Higher Education Pedagogies     Open Access   (Followers: 8)
Higher Education Studies     Open Access   (Followers: 50)
Higher Education, Skills and Work-based Learning     Hybrid Journal   (Followers: 45)
Higher Learning Research Communications     Open Access   (Followers: 7)
Högre utbildning     Open Access   (Followers: 1)
Ingeniería Mecánica     Open Access   (Followers: 4)
Innovation in Teaching and Learning in Information and Computer Sciences     Open Access   (Followers: 4)
Integración y Conocimiento     Open Access  
International Higher Education     Open Access   (Followers: 21)
International Journal for Educational Integrity     Open Access   (Followers: 2)
International Journal of Doctoral Studies     Open Access   (Followers: 1)
International Journal of Educational Technology in Higher Education     Open Access   (Followers: 6)
International Journal of Engineering Pedagogy     Open Access  
International Journal of Higher Education     Open Access   (Followers: 45)
International Journal of Higher Education and Sustainability     Hybrid Journal   (Followers: 4)
International Journal of STEM Education     Open Access   (Followers: 4)
International Journal of the First Year in Higher Education     Open Access   (Followers: 1)
Interpreter and Translator Trainer     Hybrid Journal   (Followers: 4)
ISAA Review     Full-text available via subscription   (Followers: 1)
Issues in Accounting Education     Full-text available via subscription   (Followers: 13)
Issues in Accounting Education Teaching Notes     Full-text available via subscription   (Followers: 10)
J3eA     Open Access   (Followers: 2)
Jesuit Higher Education : A Journal     Open Access  
Journal for Education in the Built Environment     Open Access   (Followers: 3)
Journal of Advanced Academics     Hybrid Journal   (Followers: 11)
Journal of Applied Research in Higher Education     Hybrid Journal   (Followers: 51)
Journal of Biomedical Education     Open Access   (Followers: 2)
Journal of Collective Bargaining in the Academy     Open Access   (Followers: 1)
Journal of College Counseling     Partially Free   (Followers: 1)
Journal of College Teaching & Learning     Open Access   (Followers: 14)
Journal of Community Engagement and Higher Education     Open Access   (Followers: 9)
Journal of Learning Design     Open Access   (Followers: 12)
Journal of Learning Development in Higher Education     Open Access   (Followers: 25)
Journal of Nursing Education and Practice     Open Access   (Followers: 17)
Journal of Perspectives in Applied Academic Practice     Open Access   (Followers: 1)
Journal of Problem Based Learning in Higher Education     Open Access   (Followers: 10)
Journal of Science and Research     Open Access  
Journal of Service-Learning in Higher Education     Open Access   (Followers: 1)
Journal of Student Affairs in Africa     Open Access   (Followers: 1)
Journal of Student Engagement : Education Matters     Open Access   (Followers: 12)
Journal of Student Financial Aid     Open Access  
Journal of Student Research     Open Access  
Journal of Teacher Education for Sustainability     Open Access   (Followers: 16)
Journal of Teaching and Learning for Graduate Employability     Open Access  
Journal of Technology and Science Education     Open Access   (Followers: 11)
Journal of University Teaching & Learning Practice     Open Access   (Followers: 35)
Journal of Veterinary Medical Education     Partially Free   (Followers: 13)
Juristische Ausbildung     Hybrid Journal   (Followers: 6)
Kentucky Journal of Excellence in College Teaching and Learning     Open Access   (Followers: 5)
Kentucky Journal of Higher Education Policy and Practice     Open Access   (Followers: 3)
Language Learning in Higher Education     Hybrid Journal   (Followers: 19)
Maine Policy Review     Open Access   (Followers: 1)
Makerere Journal of Higher Education     Full-text available via subscription   (Followers: 2)
Marketing Education Review     Full-text available via subscription   (Followers: 6)
Medical Teacher     Hybrid Journal   (Followers: 39)
National Teaching & Learning Forum The     Hybrid Journal  
Nauka i Szkolnictwo Wyższe     Open Access  
New Directions for Student Leadership     Hybrid Journal   (Followers: 1)
Nordic Journal of Information Literacy in Higher Education     Open Access   (Followers: 25)
Nursing Education Perspectives     Full-text available via subscription   (Followers: 11)
Online Journal for Global Engineering Education     Open Access  
Pedagogia Social. Revista Interuniversitaria     Open Access   (Followers: 1)
Pédagogie Médicale     Full-text available via subscription   (Followers: 1)
Perspectiva Educacional     Open Access   (Followers: 2)
Planet     Open Access   (Followers: 4)
PRISM : A Journal of Regional Engagement     Open Access   (Followers: 1)
Recherche & formation     Open Access   (Followers: 1)
Recruiting & Retaining Adult Learners     Hybrid Journal   (Followers: 1)
Research Ethics     Hybrid Journal   (Followers: 7)
Revista Brasileira de Extensão Universitária     Open Access  
Revista Científica Ciencia y tecnología     Open Access  
Revista d'Innovació Docent Universitària     Open Access  
Revista Digital de Investigación en Docencia Universitaria     Open Access   (Followers: 1)
Revista Electronica Interuniversitaria de Formacion del Profesorado     Open Access  
Revista Gestão Universitária na América Latina - GUAL     Open Access  
Revista Interuniversitaria de Formacion de Profesorado     Open Access  
RT. A Journal on Research Policy and Evaluation     Open Access   (Followers: 1)
RU&SC. Revista de Universidad y Sociedad del Conocimiento     Open Access   (Followers: 2)
Strategic Enrollment Management Quarterly     Full-text available via subscription   (Followers: 2)
Student Engagement in Higher Education Journal     Open Access   (Followers: 1)
Student Success : A journal exploring the experiences of students in tertiary education     Open Access   (Followers: 9)
Studium : Tijdschrift voor Wetenschaps- en Universiteits-geschiedenis / Revue d'Histoire des Sciences et des Universités     Open Access   (Followers: 1)
Tartu Ülikooli ajaloo küsimusi     Open Access  
Teaching and Learning Inquiry : The ISSOTL Journal     Full-text available via subscription   (Followers: 11)
The Qualitative Report     Open Access   (Followers: 1)
Triple Helix     Open Access   (Followers: 1)
Universidad en Diálogo : Revista de Extensión     Open Access  
Universidades     Open Access   (Followers: 1)
Widening Participation and Lifelong Learning     Hybrid Journal   (Followers: 11)
Women in Higher Education     Hybrid Journal   (Followers: 5)
Zeitschrift für Politikberatung     Hybrid Journal   (Followers: 1)

           

Journal Cover Ingeniería Mecánica
  [4 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 1815-5944
   Published by SciELO Homepage  [711 journals]
  • Bonding of Sheets nitrile elastomer/Retamo Liso: Use of ecological
           adhesives with silane and halogen

    • Abstract: Se estudió la junta de láminas de compuesto de caucho nitrilo butadieno y harina de Retamo liso (Teline Monspessulana) mercerizada en proporción de 50 phr con el objetivo de probar alternativas ecológicas de adhesión. Fueron utilizados dos adhesivos, catalogados como ecológicos: Poliuretano y cloropreno ambos en base agua. En los mecanismos utilizados para juntar las láminas de elastómero nitrilo/fibra de retamo liso con el adhesivo se probaron primers de adhesión:3-aminopropiltrietoxisilano y viniltrimetoxisilano y primer clorados. Para estudiar la fuerza de adhesión de las juntas de las láminas se realizaron pruebas de pelado. Luego se caracterizaron las muestras con espectroscopia infrarroja con el fin de establecer el mecanismo con el que se adhirieron las láminas. Los análisis permiten establecer que el uso de silanoviniltrimetoxisilano como primer de adhesión le confirió a la unión de elastómero de nitrilo con fibra de retamo liso y poliuretano como adhesivo el mayor valor de resistencia al pelado.Bonded joint of composite sheets of nitrile butadiene rubber with Teline Monspessulana flour mercerized in proportion of 50 phr was studied, with the objective of testing ecological alternatives of adhesion. Two adhesives were used: water-based polyurethane and chloroprene dispersions, known as environmentally friendly. In the mechanisms used to bonding joint substrates of composites rubber/flour with adhesive, three surface treatments were tested: 3-aminopropyltriethoxysilane, vinyltrimethoxysilane and chlorinate based primers. To study the adhesion strength of the bonded joints, peel tests were performed.The specimens were then characterized by infrared spectroscopy FT-IR in order to establish the mechanism by which the adhesion of substrates. Analyses showed that the based-vinyltrimethoxysilane primer presented a better performance in adhesive bonding of polyurethane on the surface of the substrates, which was observed in the highest values of peel strength.
       
  • Fabrication and characterisation of tungsten carbide WC-X (X=Co, Ni)
           obtained by powder metallurgy

    • Abstract: La industria pulvimetalúrgica es una tecnología que en Colombia es poco investigada a pesar de su éxito a nivel mundial. A nivel nacional, el sector de máquina-herramienta, automotriz y oil & gas son los mayores consumidores de este tipo de aleaciones. En este artículo se incursionó en la pulvimetalúrgica de materiales cerámico-metálico. Se sinterizaron y caracterizaron exitosamente las aleaciones 90WC8Co2Ni y 94WC6Ni usadas en boquillas y asientos de válvula de la industria petrolera y se compararon con calidades comerciales. Los análisis EDS y de DRX de las 2 aleaciones, laboratorio y comerciales, son similares; no obstante su microestructura y dureza difieren debido al proceso de fabricación y tamaño de grano de WC. Las aleaciones comerciales tienen dureza 15-19 % superior a las de laboratorio. En la composición comercial con sólo níquel se observan defectos asociados al proceso mientras que en las muestras de laboratorio no se observan dichas anomalías.Powder metallurgy is a technology poorly developed in Colombia despite of worldwide success. At local level, machine tool, automotive and oil & gas sectors are the largest consumers of this kind of alloys. This article address in the PM process of ceramic-metallic materials known as CERMETS. Were successfully sintered and characterised the alloys 90WC8Co2Ni and 94WC6Ni used in oil & gas nozzle and valve seats and they were compared with commercial ones. EDS and XRD of the two alloys, laboratory and commercial, are similar; however, its microstructure and hardness differ due to manufacturing process and WC grain size. Commercial alloys have hardness 15-19 % higher than laboratory. In the commercial composition, with only nickel, defects associated to the manufacturing process were detected. Meanwhile laboratory samples not show those anomalies.
       
  • Simulation of louvers´ blades under  the effect of hurricane
           wind

    • Abstract: El objetivo del trabajo fue determinar la resistencia mecánica de las tablillas de persianas bajo la acción de vientos huracanados. Las persianas permiten la entrada de aire, iluminación e impide la incidencia directa de los rayos del sol y la entrada de agua. Se empleó el Método de Elementos Finitos. Tres secciones transversales diferentes con 1500 mm de longitud y espesores de chapa de 0,6hasta 2,0 mm fueron analizadas. Como resultados se obtuvo que las tablillas de las variantes A, B y C resisten las condiciones impuestas a los modelos sin superar el límite de fluencia cuando tienen un espesor de 2,0, 1,2 y 1,0 mm respectivamente. La persiana con la mayor altura estandarizada resistió el efecto de las cargas.Louvers allow the air intake, illumination and avoid the penetration of rain water and sun light. The objective of this paper was to determinate the mechanical strength of the louvers´ blades under the effect of hurricane wind. The Finite Element Method was used. Three different cross sections with 1500 mm of length and sheet thicknesses from 0,6 to 2,0 mm were analyzed. As results were obtained that the variants A, B and C resisted the conditions imposed to models without exceed the yield stress when 2,0, 1,2 and 1,0 mm of thickness were used respectively. The louver with the highest standardized height resisted the load conditions.
       
  • Development of the Moiré method of projecting fringes for the evaluation
           of deformations in upper premolars

    • Abstract: Fue implementada la técnica de Moiré de proyección de franjas en la evaluación de deformaciones en dientes pre molares saludables, para esto fue diseñada una instalación experimental. Las muestras, fueron embutidas en resina de polietileno y fijadas en soporte, el cual, tiene un vástago que es responsable por la aplicación de la carga, siendo las cargas utilizadas de 25 N, 50 N, 75 N y 100 N. Cada carga fue aplicada a lo largo del eje del diente tocando sus dos cúspides y después nuevamente con la carga tocando solamente una cúspide. Fue desarrollado un programa soportado en MATLAB, para la reconstrucción de las imágenes. El proceso de reconstrucción digital de la imagen aplicando el método de proyección de franjas incluye: las imágenes de contraste de intensidad y de fase y la deformación causada por la aplicación de una fuerza sobre los dientes. Para la linealización de la fase fue aplicado el algoritmo de Volkov.We present an experimental installation for the measurement of deformations of healthy superior premolar teeth implementing the method of projection of fringes. The samples were inserted in polyethylene resin and fixed in support, which has a stem that is responsible for the application of the load, the loads used being of the order of 25 N, 50 N, 75 N and 100 N. Each load was applied along the axis of the tooth by touching its two cusps and then again with the load touching only a cusp. Was developed a computer program supported in MATLAB for the reconstruction of images. The process of digital image reconstruction using the stripe projection method includes: Intensity and phase contrast images and deformation caused by the application of a force on the teeth. For the linearization of the phase was applied the algorithm of Volkov.
       
  • Aplicación de la simulación energética de edificios en la validación
           de estrategias operacionales de sistemas HVAC en un hotel tropical

    • Abstract: This paper validates a trading strategy of a water-cooled chiller centralized system on a tropical hotel considered a transit hotel during last year 2013 was implemented empirically. For the same thermal loads climate with a building simulation tool called TRNSYS software for critical conditions, occupancy, weather and constructive characteristics of the system was calculated. Thermal load profiles for different levels of occupancy, comparing the installed thermal capacity were evaluated. Also it takes into account the particularities of occupancy in the hotel. This research proposed measures that complement the hotel’s energy management. Finally the strategy implemented allowed the hotel, savings403 123,76 kWh/year, and issuing leaving 371,27 t of CO2/year into the atmosphere. It meant about average consumption of the whole hotel for three months. It had an economic impact of 53212,33 USD/year.El presente trabajo valida una estrategia de operación del sistema centralizado de agua helada en un hotel tropical considerado un hotel de tránsito que durante el año 2013 se puso en práctica de forma empírica. Para el mismo se calculó las cargas térmicas de climatización con utilizando una herramienta para la simulación de edificaciones, software TRNSYS, para condiciones críticas, de ocupación, meteorológicas y las características constructivas de la instalación. Se evaluaron los perfiles de carga térmica para distintos niveles de ocupación, comparándose con la capacidad térmica instalada. Además se tienen en cuenta las particularidades de ocupación del hotel. En esta investigación se proponen medidas que complementan la administración de la energía. Finalmente la implementación de esta estrategia permitió el ahorro de 403 123,76 kWh /año, dejándose de emitir 371,27 t de CO2/año a la atmosfera. Este ahorro representa el consumo del hotel en un periodo de tres meses y tiene un impacto económico de of 53212,33 USD/año.
       
  • Applied digital holography for evaluating hard metal chip

    • Abstract: El objetivo de este trabajo consistió en la aplicación de un método óptico interferométrico para la evaluación del desgaste en una pastilla de metal duro. Se describe el esquema experimental para la aplicación de la técnica de la Holografía Digital utilizada para el registro de los hologramas digitales en una cámara CCD (Dispositivo de Carga Acoplada). La pastilla inspeccionada con la técnica óptica fue previamente montada en una estructura de soporte y ligeramente calentada con una lámpara de halógeno para evidenciar las regiones con defecto o desgaste. Para el procesamiento de las imágenes, se utilizó el software, ProITec. Fue posible detectar, con alta resolución y sin contacto, los defectos que puedan comprometer la integridad estructural de la pastilla analizada, ningún defecto fue encontrado. Del análisis de las imágenes obtenidas, se verifica que la pastilla se deforma como un todo, sin que presente cualquier alteración visible en su patrón de franjas.The objective of this work is the application of an interferometric method for validating the result of wear in a cutting tool insert of hard metal. We describe in this paper the experimental setup for the application of Digital Holography technique, used with digital recording of holograms on a CCD camera. The cutting insert inspected with the optical technique was previously mounted on a support structure and slightly heated with a halogen lamp for evidence of defective regions. For image processing, the software used, ProITec. It was possible to detect, with high resolution and contactless defects that could compromise the structural integrity of the insert analyzed, no defect was found. Analysis of the images obtained, it is verified that the object is deformed as a whole, not to present any visible alteration in their pattern of fringes.
       
  • Evaluation of the proceeding by gas Argon in the aluminum AW5086

    • Abstract: El objetivo del presente trabajo es evaluar la variación de los parámetros (amperaje y flujo de gas argón) del proceso de soldadura bajo protección gaseosa con electrodo de tungsteno TIG en los cambios morfológicos de la aleación AW5086 y el incremento de las propiedades mecánicas (resistencia a la tracción y dureza). Aquí se observó que, dentro de las corridas experimentales realizadas, la de mejor comportamiento fue posible que se dieran las mejores condiciones en la frontera de los granos y en su interior para garantizar las mejores propiedades mecánicas. Lo anterior lo evidenció una morfología donde se observó una distribución más ventajosa del microconstituyentedesiliciuro de magnesio Mg2Si.The objective of this work is to evaluate the parameters (amperage and argon gas flow) of the welding process by gas protection using tungsten electrode TIG in the morphological changes of the aluminum alloy AW5086 and the increase of its mechanical properties (tensile resistance and harden). The best variant with 150 A and 8 L/min was the 1 because with this amperage and flew was possible to obtain in the frontier, as well as, inside of the grain the bests mechanical properties. All of this was the evidence of the morphology where the best distribution of the microcompouse of the magnesium slicer Mg2Si was observed.
       
 
 
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