Subjects -> SOCIAL SCIENCES (Total: 1816 journals)
    - BIRTH CONTROL (22 journals)
    - CHILDREN AND YOUTH (260 journals)
    - FOLKLORE (30 journals)
    - MATRIMONY (16 journals)
    - MEN'S INTERESTS (16 journals)
    - MEN'S STUDIES (96 journals)
    - SEXUALITY (57 journals)
    - SOCIAL SCIENCES (1092 journals)
    - WOMEN'S INTERESTS (44 journals)
    - WOMEN'S STUDIES (183 journals)

SOCIAL SCIENCES (1092 journals)            First | 1 2 3 4 5 6     

Showing 401 - 136 of 136 Journals sorted alphabetically
Identities : Journal for Politics, Gender and Culture     Open Access   (Followers: 1)
Identities: Global Studies in Culture and Power     Hybrid Journal   (Followers: 20)
IDS Bulletin     Open Access   (Followers: 17)
IEEE Transactions on Computational Social Systems     Full-text available via subscription   (Followers: 2)
Illness, Crisis & Loss     Full-text available via subscription   (Followers: 3)
Im@go. A Journal of the Social Imaginary     Open Access   (Followers: 1)
imagonautas : Revista interdisciplinaria sobre imaginarios sociales     Open Access  
Immigrants & Minorities     Hybrid Journal   (Followers: 8)
Impact     Full-text available via subscription   (Followers: 2)
In Situ : Au regard des sciences sociales     Open Access   (Followers: 2)
Inclusión y Desarrollo     Open Access  
Indiana University Journal of Undergraduate Research     Open Access  
Indonesia Prime     Open Access   (Followers: 1)
Infinitum: Revista Multidisciplinar     Open Access   (Followers: 1)
Informação em Pauta     Open Access   (Followers: 1)
Informes Científicos - Técnicos UNPA     Open Access  
Infrastructure Complexity     Open Access   (Followers: 6)
Inkanyiso : Journal of Humanities and Social Sciences     Open Access   (Followers: 1)
InPsych : The Bulletin of the Australian Psychological Society Ltd     Full-text available via subscription   (Followers: 2)
INSANCITA : Journal of Islamic Studies in Indonesia and Southeast Asia     Open Access  
Integrated Social Science Journal : Faculty of Social Sciences and Humanities, Mahidol University     Open Access  
Inter Faculty     Open Access  
Interações : Cultura e Comunidade     Open Access  
Interim : Interdisciplinary Journal     Open Access   (Followers: 4)
International and Multidisciplinary Journal of Social Sciences     Open Access   (Followers: 2)
International Communication of Chinese Culture     Hybrid Journal   (Followers: 7)
International Development Planning Review     Hybrid Journal   (Followers: 15)
International E-journal of Advances in Social Sciences (IJASOS)     Open Access  
International Journal for Transformative Research     Open Access   (Followers: 1)
International Journal of Academic Research in Business, Arts & Science     Open Access   (Followers: 2)
International Journal of Applied Behavioral Sciences     Open Access   (Followers: 1)
International Journal of Arab Culture, Management and Sustainable Development     Hybrid Journal   (Followers: 7)
International Journal of Bahamian Studies     Open Access   (Followers: 1)
International Journal of Business and Social Research     Open Access   (Followers: 8)
International Journal of Canadian Studies / Revue internationale d’études canadiennes     Full-text available via subscription   (Followers: 1)
International Journal of Conflict and Violence     Open Access   (Followers: 24)
International Journal of Cultural and Social Studies (IntJCSS)     Open Access   (Followers: 1)
International Journal of Cultural Policy     Hybrid Journal   (Followers: 11)
International Journal of Disaster Risk Reduction     Hybrid Journal   (Followers: 23)
International Journal of Growth and Development     Open Access   (Followers: 1)
International Journal of Humanities and Social Science Research     Open Access  
International Journal of Iberian Studies     Hybrid Journal   (Followers: 6)
International Journal of Information, Diversity, & Inclusion     Open Access  
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 5)
International Journal of Innovative Research in Social and Natural Sciences     Open Access   (Followers: 1)
International Journal of Integrated Education and Development     Open Access  
International Journal of Intercultural Relations     Hybrid Journal   (Followers: 14)
International Journal of Knowledge-Based Development     Hybrid Journal   (Followers: 5)
International Journal of Korean Humanities and Social Sciences     Open Access  
International Journal of Language and Culture     Hybrid Journal   (Followers: 4)
International Journal of Management and Social Sciences     Full-text available via subscription   (Followers: 6)
International Journal of Management, Economics and Social Sciences     Open Access   (Followers: 15)
International Journal of Multidisciplinary Studies     Open Access  
International Journal of Punishment and Sentencing, The     Full-text available via subscription   (Followers: 10)
International Journal of Qualitative Methods     Open Access   (Followers: 28)
International Journal of Research in Business and Social Science     Open Access   (Followers: 8)
International Journal of Social and Allied Research     Full-text available via subscription   (Followers: 2)
International Journal of Social and Humanistic Computing     Hybrid Journal   (Followers: 1)
International Journal of Social And Humanities Sciences     Open Access  
International Journal of Social and Organizational Dynamics in IT     Full-text available via subscription   (Followers: 3)
International Journal of Social Research Methodology     Hybrid Journal   (Followers: 72)
International Journal of Social Science Research     Open Access   (Followers: 14)
International Journal of Social Science Studies     Open Access   (Followers: 16)
International Journal of Social Sciences and Education Research     Open Access  
International Journal of Social Sciences and Humanity Studies     Open Access   (Followers: 2)
International Journal of Synergy and Research     Open Access  
International Journal of the Sociology of Leisure     Hybrid Journal  
International Journal of Undergraduate Research and Creative Activities     Open Access   (Followers: 2)
International Journal Pedagogy of Social Studies     Open Access  
International Quarterly for Asian Studies     Open Access   (Followers: 2)
International Review of Qualitative Research     Full-text available via subscription   (Followers: 33)
International Review of Social Research     Open Access   (Followers: 3)
International Scholarly Research Notices     Open Access   (Followers: 228)
International Social Science Journal     Hybrid Journal   (Followers: 24)
International Studies. Interdisciplinary Political and Cultural Journal     Open Access   (Followers: 9)
Internationale Revue Fur Soziale Sicherheit     Hybrid Journal   (Followers: 1)
InterSciencePlace     Open Access   (Followers: 1)
Intersticios Sociales     Open Access   (Followers: 1)
Investigación Valdizana     Open Access  
Investigación y Desarrollo     Open Access   (Followers: 1)
Investigaciones Geográficas (Esp)     Open Access  
Irish Journal of Applied Social Studies     Open Access   (Followers: 5)
Issues in Social Science     Open Access   (Followers: 5)
Ithaca : Viaggio nella Scienza     Open Access  
IULC Working Papers     Open Access  
Ius et Praxis     Open Access  
Iztapalapa : Revista de ciencias sociales y humanidades     Open Access   (Followers: 1)
Izvestia Ural Federal University Journal. Series 3. Social and Political Sciences     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Janapriya Journal of Interdisciplinary Studies     Open Access   (Followers: 1)
JICSA : Journal of Islamic Civilization in Southeast Asia     Open Access  
JISIP-UNJA : Jurnal Ilmu Sosial dan Ilmu Politik Fisipol Universitas Jambi     Open Access   (Followers: 1)
Journal for New Generation Sciences     Open Access   (Followers: 4)
Journal for Semitics     Full-text available via subscription   (Followers: 8)
Journal for Undergraduate Ethnography     Open Access   (Followers: 3)
Journal of Addiction & Prevention     Open Access   (Followers: 1)
Journal of Advanced Academic Research     Open Access   (Followers: 3)
Journal of Agriculture and Social Research (JASR)     Open Access   (Followers: 5)
Journal of Agriculture, Forestry and the Social Sciences     Full-text available via subscription   (Followers: 5)
Journal of Applied Social Psychology     Hybrid Journal   (Followers: 58)
Journal of Applied Social Science     Hybrid Journal   (Followers: 17)
Journal of Arabic and Islamic Studies     Open Access   (Followers: 1)
Journal of Arts and Social Sciences     Open Access   (Followers: 1)
Journal of ASIAN Behavioural Studies     Open Access   (Followers: 4)
Journal of Burirum Rajabhat University     Open Access  
Journal of Business and Social Sciences     Open Access  
Journal of Business and Social Sciences Research     Open Access  
Journal of Cape Verdean Studies     Open Access   (Followers: 3)
Journal of Cognition and Culture     Hybrid Journal   (Followers: 19)
Journal of Community Development and Life Quality     Open Access  
Journal of Community Services and Engagement     Open Access   (Followers: 3)
Journal of Comparative Family Studies     Full-text available via subscription   (Followers: 3)
Journal of Comparative Social Welfare     Hybrid Journal   (Followers: 18)
Journal of Computational Social Science     Hybrid Journal  
Journal of Contemporary African Studies     Hybrid Journal   (Followers: 4)
Journal of Critical Race inquiry     Open Access   (Followers: 10)
Journal of Cultural Economy     Hybrid Journal   (Followers: 10)
Journal of Cultural Heritage     Full-text available via subscription   (Followers: 16)
Journal of Development Effectiveness     Hybrid Journal   (Followers: 7)
Journal of Economy Culture and Society     Open Access  
Journal of Educational Social Studies     Open Access   (Followers: 9)
Journal of Family & Consumer Sciences     Full-text available via subscription   (Followers: 1)
Journal of Family Studies     Hybrid Journal   (Followers: 22)
Journal of Geography, Politics and Society     Open Access  
Journal of Globalization and Development     Hybrid Journal   (Followers: 13)
Journal of Graduate Research     Open Access  
Journal of Graduate School Sakon Nakhon Rajabhat University     Open Access  
Journal of Graduate Studies in Northern Rajabhat Universities     Open Access  
Journal of Graduate Studies Valaya Alongkorn Rajabhat University     Open Access  
Journal of Human Security     Open Access   (Followers: 10)
Journal of Humanities and Social Sciences     Open Access   (Followers: 1)
Journal of Humanities and Social Sciences Surin Rajabhat University     Open Access  
Journal of Humanities and Social Sciences, Rajapruk University     Open Access  
Journal of Ilahiyat Researches     Open Access  
Journal of Indian Ocean World Studies     Open Access   (Followers: 2)
Journal of Interdisciplinary Gender Studies: JIGS     Full-text available via subscription   (Followers: 17)
Journal of International and Comparative Social Policy     Hybrid Journal   (Followers: 2)
Journal of International Social Studies     Open Access   (Followers: 1)
Journal of Korean Studies     Full-text available via subscription   (Followers: 12)
Journal of Language and Social Psychology     Hybrid Journal   (Followers: 13)
Journal of Markets & Morality     Partially Free  
Journal of Mediterranean Knowledge     Open Access   (Followers: 7)
Journal of Men, Masculinities and Spirituality     Full-text available via subscription   (Followers: 13)
Journal of Methods and Measurement in the Social Sciences     Open Access   (Followers: 4)
Journal of Migration and Refugee Issues, The     Full-text available via subscription   (Followers: 34)
Journal of Multicultural Affairs     Open Access   (Followers: 1)
Journal of New Brunswick Studies / Revue d’études sur le Nouveau-Brunswick     Open Access   (Followers: 3)
Journal of Organisational Transformation & Social Change     Hybrid Journal   (Followers: 8)
Journal of Pan African Studies     Open Access   (Followers: 2)
Journal of Personality and Social Psychology     Full-text available via subscription   (Followers: 358, SJR: 4.302, CiteScore: 6)
Journal of Policy Practice     Hybrid Journal   (Followers: 5)
Journal of Policy Practice and Research     Hybrid Journal   (Followers: 3)
Journal of Population and Sustainability     Open Access   (Followers: 1)
Journal of Poverty and Social Justice     Hybrid Journal   (Followers: 31)
Journal of Progressive Research in Social Sciences     Open Access   (Followers: 5)
Journal of Purdue Undergraduate Research     Open Access   (Followers: 1)
Journal of Relationships Research     Hybrid Journal   (Followers: 5)
Journal of Religion & Spirituality in Social Work: Social Thought     Hybrid Journal   (Followers: 11)
Journal of Research in National Development     Full-text available via subscription  
Journal of Responsible Innovation     Hybrid Journal   (Followers: 7)
Journal of Social Change     Open Access   (Followers: 7)
Journal of Social Development in Africa     Full-text available via subscription   (Followers: 8)
Journal of Social Distress and the Homeless     Hybrid Journal   (Followers: 6)
Journal of Social Intervention: Theory and Practice     Open Access   (Followers: 2)
Journal of Social Issues     Hybrid Journal   (Followers: 18)
Journal of Social Philosophy     Hybrid Journal   (Followers: 26)
Journal of Social Science Education : JSSE     Open Access  
Journal of Social Science Studies     Open Access   (Followers: 13)
Journal of Social Sciences     Open Access   (Followers: 16)
Journal of Social Sciences and Humanities Review     Open Access  
Journal of Social Structure     Open Access   (Followers: 1)
Journal of Social Studies Research     Full-text available via subscription   (Followers: 16)
Journal of Studies in Social Sciences     Open Access   (Followers: 6)
Journal of Technology in Human Services     Hybrid Journal   (Followers: 4)
Journal of the Bangladesh Association of Young Researchers     Open Access   (Followers: 1)
Journal of the Polynesian Society     Full-text available via subscription   (Followers: 7)
Journal of the Society for Social Work and Research     Full-text available via subscription   (Followers: 13)
Journal of the University of Ruhuna     Open Access   (Followers: 1)
Journal of Transnational American Studies     Open Access   (Followers: 3)
Journal of Trust Management     Open Access   (Followers: 4)
Journal Sampurasun : Interdisciplinary Studies for Cultural Heritage     Open Access   (Followers: 1)
Jurnal Abdimas     Open Access  
Jurnal Biometrika dan Kependudukan     Open Access   (Followers: 1)
Jurnal Ilmiah Ilmu Sosial     Open Access   (Followers: 1)
Jurnal Ilmiah Peuradeun     Open Access   (Followers: 2)
Jurnal Ilmu Sosial dan Humaniora     Open Access  
Jurnal Karya Abdi Masyarakat     Open Access   (Followers: 1)
Jurnal Kawistara     Open Access  
Jurnal Lakon     Open Access  
Jurnal Masyarakat dan Budaya     Open Access  
Jurnal Pendidikan Ilmu Sosial     Open Access   (Followers: 1)
Jurnal Sosial Humaniora     Open Access   (Followers: 2)
Jurnal Teori dan Praksis Pembelajaran IPS     Open Access  
Jurnal Terapan Abdimas     Open Access  
Just Policy: A Journal of Australian Social Policy     Full-text available via subscription   (Followers: 17)
Kaleidoscope     Open Access  
Kasetsart Journal of Social Sciences     Open Access   (Followers: 2)
Kervan. International Journal of Afro-Asiatic Studies     Open Access  
Kimün. Revista Interdisciplinaria de Formación Docente     Open Access  
Kırklareli Üniversitesi Sosyal Bilimler Dergisi     Open Access  

  First | 1 2 3 4 5 6     

Similar Journals
Journal Cover
Interim : Interdisciplinary Journal
Number of Followers: 4  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1684-498X
Published by Sabinet Online Ltd Homepage  [185 journals]
  • Effects of illumination on accessibility of public parks in South African
           cities

    • Authors: J. Honiball; D. Das
      Abstract: Public parks (PP) and open recreational facilities are essential elements in cities particularly in the residential areas. Evidence from literature suggests that PPs have a positive influence on the social and physical health of the people who have access to them. Although, PPs have been located in the residential areas of South Africa according to urban planning guidelines and rules, they are observed to be underutilised. Many factors including location, accessibility, and social issues like crime or fear of crime, life style, and lack of time are generally attributed for such a scenario. Therefore, the objective of this study is to explore how illumination levels in the public parks influence the utilisation of public parks in the residential areas of South African cities. The investigation was conducted by using Bloemfontein city as a case study following a survey research method. The study revealed that more people use the PPs during evening hours, higher illumination is one of the most important factors that contributes to the accessibility of the PPs in the residential areas and the utilisation of parks are enhanced with higher level of artificial illumination.
      PubDate: 2015-01-01T00:00:00Z
       
  • Cost-benefit analysis of recloser placement for reliability

    • Authors: J. Pretorius; C.T. Gaunt
      Abstract: Technical network reliability in electrical distribution networks and the improvement thereof will always be part of utilities and the electricity supply industry. One of the key reliability improvement strategies is additional recloser (breaker) installation on medium voltage networks.The effect of recloser placement on network reliability is investigated. A method of cost-benefit analysis (CBA) is explored, explained and used to analyse the placement of additional reclosers in electrical networks. Costs and benefits are shown to be different when viewed from the perspective of the utility against that of the customer, and this ultimately influence the placement of a newly planned breaker.
      PubDate: 2015-01-01T00:00:00Z
       
  • Examining the relationship between abstract thinking ability and academic
           performance in object oriented programming : a psychometric and
           theoretical analysis of student capacity

    • Authors: M. Kompi; L. Grobbelaar
      Abstract: reasoning involves flexible thinking as well as solving problems creatively and logically. Evidence suggest that especially first year students that undertake Information Technology studies at institutions of higher education, find it challenging to successfully comprehend concepts regarding object oriented programming (OOP). This study is based on the hypothetical premise that student performance regarding OOP can be linked to the abstract thinking ability of the particular student because of the highly abstract nature of OOP concepts. A comparison between psychometric test results gauging abstract thinking abilities of students and student performance in OOP are also presented and argued.
      PubDate: 2015-01-01T00:00:00Z
       
  • Optimum strategic management system for Lesotho roads network through
           RONET model

    • Authors: Md.A. Al-Hussain; M.M. Hassan
      Abstract: The paper presents the application of World Bank's Model RONET to optimize strategic management system for Lesotho roads network. The Lesotho road network condition deteriorated considerably during the 2000s due to underfinancing of operations and maintenance. In recent years, as the financial situation in Lesotho has improved, financing for the road sector has gradually increased, focusing on the most hazardous and highly trafficked parts of the road network. However, the overall budget allocated to the sector remains inadequate to maintain the entire district road network in a stable condition. This research is going to present the application of World Bank's model Road Network Evaluation Tool (RONET) to strategic network level analysis of the Lesotho road network. The goals of the presented study are to obtain the optimum maintenance and rehabilitation strategy and related budget, estimate the impact of different funding levels on the future quality and estimate the economic consequences of budget constraints.The application of RONET model will lead to an optimal maintenance and rehabilitation strategy with a good balance between rehabilitation, periodic and recurrent maintenance. The implementation of optimal maintenance and rehabilitation strategy would cause major improvement compared to current condition of the network. Implementation of higher than optimal maintenance and rehabilitation leads to substantially higher roads directorate costs and consequently lower net benefits, while the implementation of the lower than optimal maintenance and rehabilitation standards would lead to considerably worse network condition for slightly lower agency costs. This means that even minor budget constraints would result in considerably higher total road transport costs in the country's economy.
      PubDate: 2015-01-01T00:00:00Z
       
  • Capacitive coupling on overhead power lines

    • Authors: M. Van Der Mescht
      Abstract: This paper contains research performed on the effects of capacitive coupling on overhead power lines under loss of phase conditions in an earthed system. The research was triggered by a contact incident which occurred on a 11kV overhead line during unplanned maintenance performed under live conditions.
      PubDate: 2015-01-01T00:00:00Z
       
  • Environmental effects of road pavements stabilized with Class F fly ash

    • Authors: M.W. Heyns; M.M. Hassan
      Abstract: Fly Ash is a residue generated by coal combustion and abundantly available, but due to potentially toxic elements found in Fly Ash, is considered harmful to the environment. The objective of this study is to evaluate the environmental effects of fly ash used as a stabilization agent in road pavement construction. Using laboratory-testing specimens of fly ashes namely, Kendal Dump Ash, Durapozz and Pozzfill, stabilized with classified G5 material and 1% AFRISAM and LAFARGE cement respectively and leach testing done to evaluate chemical leach properties over time and the harmful effects it has on the environment. Laboratory leaching sample results have indicated that Fly Ash constituents exhibit limited mobility. The study revealed that Fly Ash is an environmental option and has engineering advantages when used properly for soil stabilization techniques.
      PubDate: 2015-01-01T00:00:00Z
       
  • Validating the optimum tilt angle for PV modules in the central region of
           South Africa for the winter season

    • Authors: P.E. Hertzog
      Abstract: Optimizing the output power of any PV module involves a number of factors, including the setting of the tilt angle. The purpose of this paper is to present empirical evidence validating the optimum tilt angle for PV module installations in semi-arid regions of South Africa for the winter season. The experimental setup includes three identical PV systems where the PV modules where set to different tilt angles as stipulated in the literature. Data was recorded from May to July 2015 using an Arduino board and LabVIEW software. Two power measurements were used to validate the optimum tilt angle as being Latitude plus 10° for the winter season.
      PubDate: 2015-01-01T00:00:00Z
       
  • A mechanism for lean and sustainability : the case of infrastructure
           projects in South Africa

    • Authors: R.B. Isa; F.A. Emuze D.K. Das
      Abstract: Stakeholders in the construction sector are placing a much stronger emphasis on the importance of attaining sustainability within the industry. While much efforts has been deployed towards attaining sustainable development through infrastructural projects, the methods used by most stakeholders for projects procurement hinders the attainment of criteria for sustainability. The proposed research will thus explore how to evolve a mechanism for promoting lean sustainable construction with infrastructure projects in South Africa. The study is primarily to assess the components of the framework required for the integrative implementation of lean and sustainability concepts in an infrastructure project. The study is qualitative in nature, based on interpretative theoretical framework that is grounded in literatures in the field of built-environment. Emergent findings indicate that a case study approach and specifically, qualitative comparative analysis (QCA) research approach provide answers to the research questions, which are domiciled in a complex socio-technical environment. The evolution of the mechanism shall focus on lean construction and sustainability methods / tools that support the elimination of wastes in work processes, work methods, work culture and materials issues, thereby promoting energy and resource efficiency. It is expected that the framework that will leads to continuous improvement in the areas of energy and resource efficiency, minimization of emission (Co2) from the built environment, improvement in stakeholders working relationships and social benefits to the community, among others.
      PubDate: 2015-01-01T00:00:00Z
       
  • Multiple vision inspections from a single control system using vision
           assistant software

    • Authors: T. Bihi
      Abstract: The development of a Machine Vision system involved the selection of various components that will work together in order to solve a vision problem. The vision system was tasked with verifying reconfiguration and the position of devices within the assembly system, as well as inspecting the product for defects that infringe on its quality. The aim in this article is to discuss the control and setup of the multiple vision inspections that the vision system had to perform in order to solve the assembly systems verification and quality assurance problem.
      PubDate: 2015-01-01T00:00:00Z
       
  • Geotutor : software created as an educational resource for geotechnical
           engineering

    • Authors: W. Badenhorst; E. Theron
      Abstract: Innovative software applications may prove to be advantageous in a teaching environment. It has been proven that technological teaching produces better achievement in class and an increased interest in the relevant field of teaching. Software that is able to produce a basic geotechnical report will give civil engineering students an insight into the field of geotechnical engineering and an understanding of the relevant inputs required and the outputs generated. A fundamental understanding of site investigations and related reports is an important aspect of geotechnical engineering training.
      PubDate: 2015-01-01T00:00:00Z
       
  • Implications of population parameters in predicting periodic tendencies
           within an age-structured population model with a Shepherd recruitment
           function

    • Authors: Michelle Heidi Ellis
      Abstract: Designing an age-structured population model requires knowledge of the interaction between age and time related phenomenon within population. Data from life tables can be used to estimate the survival and birth rates needed in the design of an age-structured model.
      PubDate: 2015-01-01T00:00:00Z
       
  • An algorithm for calculating the evolutionary stable strategy for an
           age-structured population model with a Shepherd recruitment function

    • Authors: Michelle Heidi Ellis
      Abstract: An algorithm for calculating the evolutionary stable strategy for an age-structured population model with a Shepherd recruitment function
      PubDate: 2015-01-01T00:00:00Z
       
  • A mechanism for waste reduction in structural design process in South
           Africa construction

    • Authors: A. Aka; F.A. Emuze D.K. Das
      Abstract: Structural design process (SDP) consists of three processes of inception; preliminary design and detail design. Each of these processes is laden with wastes that adversely affect project performance. Therefore, this study seeks to identify such wastes so as to develop a mechanism for its effective management. To achieve this, action research study will be conducted in some consulting engineering firms situated in Bloemfontein, South Africa. It is expected that the results will provide the platform for the development of a suitable mechanism for reduction / elimination of wastes in structural design process.
      PubDate: 2015-01-01T00:00:00Z
       
  • Multi material powder delivering systems for selective laser melting

    • Authors: A. Kinnear; I. Yadroitsava I. Yadroitsev
      Abstract: Selective Laser Melting (SLM) is a powder bed fusion process which is an additive manufacturing (AM) process, whereby a laser beam selectively fuses regions of a powder bed to form complex objects. Growth in the SLM field has revealed the need for parts containing multiple materials for applications in the medical, tool making, aerospace and other hi-tech industries. By applying multiple materials, regions with different mechanical properties, thermal conductivity zones or corrosion-resistant coatings can be achieved in a single manufacturing cycle utilizing the SLM process. With the SLM process physical bonds can be formed between different materials by creating an interlocking interface due to the rapid solidification of the molten materials. With the current SLM equipment, multi material objects are possible but only with material differences between the layers. New approaches are needed to develop a method that allows multi material parts not only in the Z axis, but also allow material differences on a single layer (X-Y axis). Approaches such as powder feeding through a capillary tube, auger feed system, electrostatic charge or masks have all been proposed as solutions to multi material deposition. Multi material objects produced in a single cycle with complex geometry and prescribed properties has the opportunity of further growing the AM market.
      PubDate: 2015-01-01T00:00:00Z
       
  • Validating the acceptance zone for PV modules using a simplified measuring
           approach

    • Authors: A.J. Swart
      Abstract: Optimizing the output power of any PV module involves a number of factors, including the orientation angle. However, many PV modules are not installed at the suggested orientation angle of 0° N in South Africa, thereby indicating a nonalignment to the maximum solar radiation available for a given day. The purpose of this research is to highlight the importance of this installation by validating its acceptance zone using a simplified measuring approach. Results confirm that the incident angle on a specific PV installation varies around 44° for winter months. This indicates an acceptance zone of around 88°, which must be optimally aligned to the solar radiation curve, thereby yielding the optimum amount of output power.
      PubDate: 2015-01-01T00:00:00Z
       
  • Clearing of transient faults in MV networks

    • Authors: C.J. Van Der Mescht; W.J.D. Van Schalkwyk
      Abstract: This paper contains research performed on the effectiveness of methods that aims to clear transient faults on MV networks without causing momentary supply loss to customers due to ARC operations, which is achieved by "instantaneous" interruption of fault currents. This is done by momentarily disconnecting the NECR's neutral earth connection. Currently the research also includes the implementation of single pole breakers which are able to trip independently from each other within 25ms. Implementing these methods of clearing transient faults will result in less stress being placed on breakers, joints, conductors and transformers within the MV network. It will also yield a better QoS performance with regards to dips and momentary interruptions. Lastly, the scheme will result in up to 50 times less burn wounds on people or animals in the unfortunate case of making contact with the MV network.
      PubDate: 2015-01-01T00:00:00Z
       
  • The amalgamation of mechanical, electrical and software technology to
           remove manual tasks performed in a vehicle rental business

    • Authors: D. Van Rensburg; C.H. Wessels
      Abstract: Most operational businesses today are restricted to normal business hours, as it is not cost effective for a business to operate on a 24-hour basis. Not only will operational costs increase substantially, in addition to these increases, the company will be faced with numerous challenges that range from security to staffing. Over the years, technology has proven to be an asset in which businesses could invest and enjoy the rewards of their investment in the form of an increase in employee efficiency, ease of new procedural implementations and the enforcement of governance. This process of continuous refinement has resulted in business systems developing to a point where the input required from an employee has been limited to the bare minimum. With the flexibility, dependability and affordability of technology today any operational business can reduce the need for human input into their systems. This article discusses the techniques employed by the researcher to stratify the hypothesis that the amalgamating of mechanical, electrical and software technologies will remove manual tasks performed by staff in a vehicle rental business.
      PubDate: 2015-01-01T00:00:00Z
       
  • Assessment of traffic congestion in the central areas of Kimberley city

    • Authors: D.K. Das; M.S.M. Keetse
      Abstract: Traffic congestion is a challenge leading to undesirable consequences in most of the cities of the world. Many large and medium cities of South Africa, specifically the central business districts (CBD) are facing this challenge and are severely affected by this mobility problem. One such city, Kimberley, because of its unique physical, spatial, road network, economic characteristics and requirement of the mobility of heavy vehicles in addition to the normal city traffic faces typical traffic congestion challenges in its CBD area, particularly during the peak hours, which warranted this investigation. So, the objective of this paper is to assess the degree of traffic congestion (Level of Service (LOS)) in the roads of CBD area and explores a possible mechanism to ease the problem. A survey research methodology and application of relevant empirical models were employed to assess the level of traffic congestion and observe possible solutions to ease the traffic conduct this investigation. Findings revealed that there is appreciable level of traffic congestion in some of the roads of the CBD area of the Kimberley City, specifically during the peak hours, which needs strategic intervention. A reengineering solution, such as, traffic diversion from the congested roads to the underutilised or least congested roads could assist in easing the traffic congestion, increase in speed and reduction in travel time resulting into optimal utilisation of all the roads in the CBD area of the city.
      PubDate: 2015-01-01T00:00:00Z
       
  • Sustainable approach to upgrade low volume roads in Petrusville

    • Authors: E. Mckenzie; M. Mostafa Hassan
      Abstract: Research undertaken in Petrusville and Philipstown was to illustrate how nonconventional materials performed as a sub-base. Roads investigated in this research paper were classified as light or low volume roads where the daily traffic equalled to 100 vehicles per day. Main objectives was to achieve a reduction in the overall life cycle cost, vehicle operating cost and the depletion of nonrenewable resources for the roads. The outcome the road authorities and the different stakeholders wanted to achieve was that non-conventional materials can replace good quality road construction materials if the approach is cost effective and sustainable in the long term.
      PubDate: 2015-01-01T00:00:00Z
       
  • Validating a reconfigurable assembly system utilizing virtual
           commissioning

    • Authors: H.J. Vermaak; J.A. Niemann
      Abstract: South African manufacturing companies today need to be more sophisticated technologically to compete for global markets. The latest trend in automation and manufacturing emerges in the form of reconfigurable systems. The aim of this paper is to show the development of a reconfigurable assembly system and using virtual commissioning to plan, validate and optimize it. To achieve this "DELMIA" software was used to create a virtual simulation environment to verify an assembly cell from such a system as a case study. Simulations were conducted to verify software functions, device movements and operations, and the control software of the system. As a result, it was found that virtual commissioning is an excellent tool for predicting how the system will function, verifying system code early, and rectifying design flaws. This will enable manufacturing companies to be more competitive, ensure increased productivity, save time and ensure them an advantage over their competition.
      PubDate: 2015-01-01T00:00:00Z
       
  • Residual stresses in direct metal laser sintered parts

    • Authors: I. Van Zyl; I. Yadroitsava I. Yadroitsev
      Abstract: Direct Metal Laser Sintering (DMLS) fabricates parts using a track-by-track, layer-by-layer method in which powder is formed by melting and solidification of single tracks and thin layers. A laser beam scans over the powder layer thus creating a cross-sectional area of the 3D object. High-concentration of laser energy input leads to high thermal gradients which induce residual stress within the as-built parts. Methods for measurement residual stresses and stresses in DMLS parts were analysed.
      PubDate: 2015-01-01T00:00:00Z
       
  • Extending the technology acceptance model to evaluate discussion forum
           adoption in a learning management system

    • Authors: J. Aucamp; J. Swart
      Abstract: The inclusion of ICT for educational purposes has burgeoned over the past decade. However, preliminary investigations indicate that e-learning systems remain underutilized, including systems such as discussion forums. The purpose of this study is to establish constructs that may promote adoption and use of discussion forums. The Technology Acceptance Model forms the theoretical framework for this study and is extended by including digital inclusion, perceived attention and perceived enjoyment. Thirty ICT students were purposively selected and interviewed. Findings suggest that perceived usefulness and ease along with digital inclusion may positively influence discussion forum adoption among undergraduate students.
      PubDate: 2015-01-01T00:00:00Z
       
  • Perspectives of education stakeholders on the influence immediacy, verbal
           aggression and compliance gaining have on learner performance

    • Authors: B. Fredericks; M. Van Deventer
      Abstract: In South Africa the educational system has seen many changes over the past few years. Transformation in education has been introduced to correct imbalances of the previous South African educational system and to improve learner achievement in some of the previously disadvantaged schools. Despite changes that have been implemented, learners in many South African schools are still underperforming. The primary aim of this investigation reported in this article was to establish the extent to which selected micro communication factors, namely, immediacy, verbal aggression and compliance gaining influence learner achievement. The researcher argues that micro communication factors in the classroom could influence learner performance either positively or negatively. According to Robinson, learner achievement refers to the ability of a learner to succeed in an assessment and to display a satisfactory level of competence.
      PubDate: 2014-01-01T00:00:00Z
       
  • The Developmental Appraisal System (DAS) as a major issue in educational
           policy discourse in the Foundation Phase of schools in the Free State

    • Authors: A.B.M. Kolobe
      Abstract: The purpose of this paper, based on a doctoral study, is to examine how teachers in the Foundation Phase of schools in the Free State province perceived, conceptualised and implemented Developmental Appraisal System (DAS) as a component of the Integrated Quality Management System (IQMS). The epistemological and ontological perspectives pertaining to both quantitative and qualitative approaches compelled the researcher to choose the Mixed Method Research (MMR). Data analysis consisted of the inferential and descriptive statistics for quantitative data analysis and, themes, patterns and behaviours for qualitative data analysis. Unbalanced two-way ANOVA, T-test and frequency distributions were used in analysis of quantitative data while themes and patterns resembled qualitative data analysis. The majority of teachers perceived DAS as a developmental process while a sizable minority claimed to the contrary. The Department of Basic Education did not provide direct training to teachers on matters pertaining to both the DAS and IQMS. Furthermore, the money reward earned through the process of DAS was perceived to be a source of conflict between teachers and school management.
      PubDate: 2014-01-01T00:00:00Z
       
 
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