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The visibility and image of handicapped people on television 总被引：2，自引：0，他引：2
J Donaldson 《Exceptional children》1981,47(6):413-416
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Morgaen L. Donaldson Kimberly LeChasseur Anysia Mayer 《Journal of Educational Change》2017,18(2):183-207
Teachers have the largest school-based influence on student learning, yet there is little research on how instructional practice is systematically distributed within tracking systems. We examine whether teaching practice varies significantly across track levels and, if so, which aspects of instructional practice differ systematically. Using multilevel modeling, we find that teachers of low track classrooms provided significantly less emotional support, organizational support, and instructional support to students in their classes than did teachers of high track classrooms. Mathematics classes were also observed to have higher quality instructional support for both content understanding and analysis and problem solving than English classes. We develop cases illustrating how small but significant differences in instructional quality are associated with substantially diverging lived experiences for students in high and low track classes. 相似文献
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While archival scholars have identified some of the most important steps for deciding to use and implement metadata standards in archives, very little systematic empirical investigation within the archival science literature regards either how implementation processes actually unfold or the factors affecting implementation. This article analyzes the organizational factors and processes that come into play during implementation of metadata standards, using PREservation metadata: implementation strategies (PREMIS) as an exemplar. Adapting a theoretical framework for secondary adoption of technologies from Gallivan (Database Adv Inf Syst 32(3):51, 2001), the authors apply their model to the PREMIS technology standard and investigate PREMIS implementation by projects/programs on the Library of Congress PREMIS Implementation Registry. Using data from a series of in-depth semi-structured interviews, the authors develop a model for the secondary adoption of PREMIS and outline implications for the secondary adoption of technology standards based on the results of this study. 相似文献
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