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141.
Alex Repenning 《Interactive Learning Environments》2013,21(1):045-074
Abstract The design of an effective interactive learning environment requires understanding the intricate relationships among people, tools, and problems. Many end‐users do not have the necessary skills, nor the time or patience, to compose programs from computer science‐sanctioned programming primitives. End‐users require environments that elevate the task of programming to the manipulation of components that are directly pertinent to the problems to be solved. This article introduces the Agentsheets programming substrate employed by designers to create interactive learning environments that are geared toward end‐users solving specific problems. A number of educational and industrial applications are used to illustrate the design and use of Agentsheets environments in domains such as art, artificial life, environmental design, games, kitchen design, and visual programming. 相似文献
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George Alexopoulos Alex Koutsouris Irene Tzouramani 《The Journal of Agricultural Education and Extension》2013,19(2):177-190
Abstract Since its establishment in the early 1950s, the Greek Extension Service has undergone considerable changes. Especially after 1981, a bureaucratic–administrative role related to the implementation of the CAP has been undertaken. In parallel, in the international scene, governments have started experimenting with various cost-recovery mechanisms for extension. In front of such challenges, at both national and international levels, the current work intends to explore the willingness of young rural inhabitants to pay for advisory services. Drawing data from a large-scale survey and utilising probit analysis, the decomposition of the marginal effects of a series demographic, socioeconomic and spatial characteristics and information needs upon willingness to pay for extension is presented. The results show that under preconditions cost-recovery mechanisms may be employed in Greece; furthermore, it is argued that the Extension Service has to be restructured–reoriented. 相似文献
144.
Jiju P. Alex 《The Journal of Agricultural Education and Extension》2013,19(5):487-503
Abstract
Purpose:
This article analyses how an initiative on farm mechanisation by a local government in Kerala in South India evolved into a formal organisation that provides sustainable livelihood options to women and small and marginal farmers and revived the rice production system. 相似文献145.
146.
Jonathan Lazar Brian Wentz Abdulelah Almalhem Alexander Catinella Catalin Antonescu Yeveniy Aynbinder Michael Bands Edward Bastress Brandon Chan Brian Chelden Darin Feustel Nabin Gautam Whitney Gregg Michael Heppding Cory Householder Alex Libby Corey Melton Jack Olgren Loren Palestino Morgan Ricks Scott Rinebold Matthew Seidel 《Government Information Quarterly》2013
It is well documented that government agencies, at all levels, continue to have problems ensuring that government web sites follow laws related to web accessibility for people with disabilities. Although there are a number of published studies on government web accessibility that are point-in-time, there are no published studies consisting of a longitudinal analysis of state-level government web site accessibility. This paper contributes to the research literature in three ways: 1) an accessibility inspection of 25 Maryland state government homepages in 2012 which involved 150 human inspections of web pages, 2) a comparison of the results from 2012 to a similar accessibility evaluation in 2009, and 3) a discussion of the role of a web page template, which was introduced in Maryland state government shortly after the 2009 evaluation. The data from this longitudinal evaluation leads to the conclusion that web page templates do tend to result in more accessible sites within state government. 相似文献
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A large percentage of the students who drop out of K–12 schools in the United States do so at the end of high school, at some point after grade 10. Yet little is known about the differences between types of students who drop out near the end of high school. The purpose of this study is to examine a typology of high school dropouts from a large nationally representative dataset (ELS:2002) using latent class analysis (LCA). We found three significantly different types of dropouts; Quiet, Jaded, and Involved. Based on this typology of three subgroups, we discuss implications for future dropout intervention research, policy, and practice. 相似文献
150.
José Cazuza de Farias Júnior Alex Antonio Florindo Maria Paula Santos Jorge Mota Mauro V. G. Barros 《Journal of sports sciences》2013,31(10):963-973
AbstractThis study aimed to investigate the direct and indirect associations between perceived environmental characteristics and psychosocial factors and physical activity levels in adolescents from Northeast Brazil. The sample was composed of 2,361 adolescents aged 14–19 years (56.6% female). Physical activity was measured using a questionnaire and environmental (perceived environmental characteristics) and psychosocial (self-efficacy, social support from parents and friends for physical activity) factors with previously validated scales. Perceived environmental characteristics were not directly associated with the levels of physical activity, but exhibited significant indirect associations, mediated by self-efficacy in males. Self-efficacy and social support were positively and directly associated with physical activity levels, and part of the associations between social support and physical activity was mediated by self-efficacy. Perception of self-efficacy and social support, important factors associated with physical activity levels in adolescents, should be the target of interventions aimed at increasing physical activity. Favorable environments for physical activity also need to be considered, since they have a positive influence on the self-efficacy of adolescents. 相似文献