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91.
    
This article offers some less‐than‐rigorous explanations for the notion of degrees of freedom, and for the particular formulae to be used when computing those values.  相似文献   
92.
Doug Kiker 《期刊图书馆员》2013,64(3-4):265-267
A group of eleven public university libraries, comprising the Council of State University Libraries consortium, created an experimental archive to retain one print copy of online journals for use of consortium members. The article addresses the initial concerns, development of the project, methods used, and concerns for the future. The article raises the question of whether libraries need to archive print backups for online materials as well as who should do the archiving and to what extent.  相似文献   
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In this study we investigate the underlying relational structure between student evaluations of teaching effectiveness (SETEs) and achievement of student learning outcomes in 116 business related courses. Utilizing traditional statistical techniques, a neural network analysis and a Bayesian data reduction and classification algorithm, we find little or no support for the validity of SETEs as a general indicator of teaching effectiveness or student learning. In fact, the underlying structure appears to be non-linear and possibly negatively bimodal where the most effective instructors are within the middle percentiles of student course ratings, while instructors receiving ratings in the top quintile or the bottom quintile are associated with significantly lower levels of student achievement.  相似文献   
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A study was conducted to determine the effectiveness of in-depth, conceptually integrated instruction delivered via a videodisc program in eliminating children's alternative frameworks in science. Prior to instruction, pupils in two eighth-grade science classes, one of higher ability and one of lower ability, were interviewed to document their alternative frameworks (informal knowledge) for explaining two science phenomena. Interviews after instruction showed that students of both ability groups did not retain their alternative frameworks. This contradicts other research findings that children's alternative frameworks are extremely resistant to change and must be directly addressed during instruction for conceptual change to occur. A well-designed science curriculum that was intelligible, plausible, and fruitful, but did not directly address alternative frameworks during instruction, changed 92% of the alternative frameworks held by students to scientific understandings.  相似文献   
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ABSTRACT Today, e‐learning is a common delivery media for education and training within many organizations. Yet, while both the supply and demand for e‐learning opportunities has risen in recent years, many professionals are beginning to question whether e‐learn‐ers are prepared to be successful in an online learning environment (e.g., Gug‐lielmino & Guglielmino, 2003; Watkins & Corry, 2005). After all, a learner's demonstrated success in a conventional education and training classroom may not be an adequate predictor of success in an e‐learning classroom. One way of gauging a potential online learner's readiness is through self‐assessment. As a first step in defining an instrument that measures an e‐learner's readiness, with the cooperation of volunteer participants from the U.S. Coast Guard, this study looked into the validity and internal consistency of items within a self‐assessment of e‐learning readiness that is under development, and provided data for the continuing development and revision of the instrument. Having demonstrated evidence of internal consistency and construct validity, the self‐assessment now provides a tool for continuing research into the prediction of e‐learning performance. Funding for this study was provided by the International Society for Performance Improvement.  相似文献   
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Central Community College (CCC; Columbus, Nebraska) has taken the lead in several business, industry, and educational collaborations, beginning locally, then expanding statewide. This article shares two models that other community colleges may wish to replicate. The first describes the development of a collaborative team. The second shows that, by using the collaborative team approach, community colleges can generate substantial increases in both funding and full-time equivalents (a basis for community college funding inNebraska)while serving business andindustry.For example, since June 1998 CCC has generated nearly $1.4 million for its business and industry training programs. As a result of collaboration among CCC, the Nebraska Community College System, government agencies, and business and industry, the Statewide Interactive Multimedia Training Library was established.  相似文献   
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In this article, we investigate the relationship between preservice teachers’ inquiry experience and their capacity to reflect on the challenges involved in implementing inquiry into classrooms. For data, we draw on the personal narratives of preservice science teachers enrolled in science instruction courses. Preservice teachers with extensive inquiry experiences perceive implementation challenges principally in terms of teaching and student learning. This contrasts with the perceptions of preservice teachers with limited inquiry experience for whom the main concerns relate to the negative perceptions of others, time, the curriculum, and materials. By identifying these perceptions, it may be possible to develop courses that assist limited and moderate-experience preservice teachers’ move toward the perceptions of their more inquiry experienced colleagues.  相似文献   
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