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The Rucker-Gable Educational Programming Scale (RGEPS) was designed to measure a respondent's attitude toward the knowledge of appropriate program placement for handicapped students, and has been used to evaluate in-service workshops and university courses. Nonetheless, a recent investigation by Graham and Henry (1981) found that, even though the average correlation among items within the scale was substantial, the cross-correlation between similar halves of the RGEPS varied considerably over a short period of time. The present study was designed to determine if the reduction in reliability was due to either one of two factors (i.e., content inequivalence or attribute instability). The findings replicated, in part, the results obtained by Graham and Henry. In addition, it appears that the construct or constructs measured by the RGEPS are unstable over short periods of time. 相似文献
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Issues concerning the relevance of the human and social capital theories in further education and particularly in the inclusion of disabled people are highlighted. Data are drawn from an ongoing ethnographic study into the experiences of disabled students in two further education colleges. Extracts from 12 focus group discussions with 70 students as well as fieldnotes from observation of courses and other college activities are used to map out the pathways by which the participants entered and progressed through the college and the courses they undertook. Also explored is the significance of the college experience in the student's lives and the extent it has succeeded in enhancing their degree of social inclusion. 相似文献
378.
Treatment of surfaces to change the interaction of fluids with them is a critical step in constructing useful microfluidics devices, especially those used in biological applications. Silanization, the generic term applied to the formation of organosilane monolayers on substrates, is both widely reported in the literature and troublesome in actual application for the uninitiated. These monolayers can be subsequently modified to produce a surface of a specific functionality. Here various organosilane deposition protocols and some application notes are provided as a basis for the novice reader to construct their own silanization procedures, and as a practical resource to a broader range of techniques even for the experienced user. 相似文献
379.
In the late 1980s and early 1990s, concern over dioxin in both paper products and wastewater led to the development of techniques that reduced the use of chlorine in the pulp industry. Both regulatory and consumer pressure motivated this change. Unlike previous studies, we use patent data to examine the evolution of two competing bleaching technologies in five major paper-producing countries, both of which reduce the use of chlorine in the pulping process. The use of patent data allows us to focus on the invention stage. However, adoption data are also presented, and by the end of the 1990s, nearly all pulp production in these countries used one of these technologies. While previous studies emphasize the importance of regulation for inducing innovation, here we find substantial innovation occurring before regulations were in place. Instead, pressure from consumers and the public at large to reduce the chlorine content of paper drove invention, prior to the introduction of environmental policies in any of the countries concerned. 相似文献
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