126,733 research outputs found

    Security in online learning assessment towards an effective trustworthiness approach to support e-learning teams

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    (c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.This paper proposes a trustworthiness model for the design of secure learning assessment in on-line collaborative learning groups. Although computer supported collaborative learning has been widely adopted in many educational institutions over the last decade, there exist still drawbacks which limit their potential in collaborative learning activities. Among these limitations, we investigate information security requirements in on-line assessment, (e-assessment), which can be developed in collaborative learning contexts. Despite information security enhancements have been developed in recent years, to the best of our knowledge, integrated and holistic security models have not been completely carried out yet. Even when security advanced methodologies and technologies are deployed in Learning Management Systems, too many types of vulnerabilities still remain opened and unsolved. Therefore, new models such as trustworthiness approaches can overcome these lacks and support e-assessment requirements for e-Learning. To this end, a trustworthiness model is designed in order to conduct the guidelines of a holistic security model for on-line collaborative learning through effective trustworthiness approaches. In addition, since users' trustworthiness analysis involves large amounts of ill-structured data, a parallel processing paradigm is proposed to build relevant information modeling trustworthiness levels for e-Learning.Peer ReviewedPostprint (author's final draft

    No. 16: The State of Food Insecurity in Msunduzi Municipality, South Africa

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    There is plenty of food in Msunduzi, in South Africa’s KwaZulu-Natal province, but the urban poor regularly go hungry. This study of Msunduzi’s food security situation formed part of AFSUN’s baseline survey of eleven Southern African cities. The survey results show that the urban poor in Msunduzi are significantly worse off than their counterparts in Cape Town and Johannesburg. A third of the households reported that they sometimes or often have no food to eat of any kind. Household size did not make a great deal of difference to levels of insecurity but female-headed households are more food insecure than male-headed households. Msunduzi is a classic case study of a city whose food supply system is dominated by modern supermarket supply chains. The informal food economy is relatively small, urban agriculture is not especially significant in the city and informal rural-urban food transfers are lower than in many other cities surveyed. In this respect, Msunduzi offers the other cities a picture of their own future. Supermarket expansion is occurring at an extremely rapid rate throughout southern Africa, tying urban spaces and populations into global, regional and national supply chains. While supermarkets offer greater variety and fresher produce than many other outlets, they clearly do not meet the needs of the poor

    Women's Empowerment in Agriculture Index

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    This document presents women's empowerment in agriculture index. Women play a critical and potentially transformative role in agricultural growth in developing countries, but they face persistent obstacles and economic constraints limiting further inclusion in agriculture. The Women's Empowerment in Agriculture Index (WEAI) measures the empowerment, agency, and inclusion of women in the agriculture sector in an effort to identify ways to overcome those obstacles and constraints. The Index is a significant innovation in its field and aims to increase understanding of the connections between women's empowerment, food security, and agricultural growth. It measures the roles and extent of women's engagement in the agriculture sector in five domains: (1) decisions about agricultural production, (2) access to and decision making power over productive resources, (3) control over use of income, (4) leadership in the community, and (5) time use. It also measures women's empowerment relative to men within their households
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