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Portfolio assessment has become a standard mechanism for the evaluation of prior learning for experienced students. The assessment of such learning in terms of the traditional liberal arts disciplines raises basic questions about the relationship of liberal learning to lived experience and about liberal learning outcomes. An informal survey of portfolio narratives receiving faculty approval for credit at various post-secondary institutions indicates a wide range of declarative, analytical, and interpretive assertions recognized as learning in these disciplines.I wish to thank the following institutions: Sinclair Community College, Clark University, the University of Alabama, and Indiana University who were kind enough to share materials on record while preserving the confidentiality through the removal of names, dates, etc.  相似文献   
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Although the Internet is largely decentralized in its communication and social patterns, its technical and regulatory apparatuses are highly centralized and hierarchical. Consequently, digital communications are vulnerable to a degree of surveillance and censorship that would be unthinkable in traditional social arenas, threatening “Internet freedom” and cyberliberties in both democratic and politically repressed societies. We believe a new architecture is required in order to protect the continuance of civil liberties in networked society. In this article, we propose 10 “social specifications” describing the requirements of such a network, and outline an architecture called MondoNet that meets these specifications using ad hoc, wireless mesh networking technologies. We also address the legal and technical challenges facing the MondoNet project, and anticipate future developments in this field.  相似文献   
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Social network analysis was used to examine the role of having a mutual biracial friend on cross-race friendship nominations among monoracial sixth-grade students (Mage = 10.56 years) in two racially diverse middle schools (n = 385; n = 351). Monoracial youth were most likely to choose same-race peers as friends but more likely to choose biracial than different-race peers as friends, suggesting that racial homophily may operate in an incremental way to influence friendships. Monoracial different-race youth were also more likely to be friends if they had a mutual biracial friend. The findings shed light on the unique role that biracial youth play in diverse friendship networks. Implications for including biracial youth in studies of cross-race friendship are discussed.  相似文献   
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In recent years, the Standards for Qualified Teacher Status in England have placed new emphasis on student‐teachers' ability to become integrated into the ‘corporate life of the school’ and to work with other professionals. Little research, however, has been carried out into how student‐teachers perceive the social processes and interactions that are central to such integration during their initial teacher education school placements. This study aims to shed light on these perceptions. The data, gathered from 23 student‐teachers through interviews and reflective writing, illustrate the extent to which the participants perceived such social processes as supporting or obstructing their development as teachers. Signals of inclusion, the degree of match or mismatch in students' and school colleagues' role expectations, and the social awareness of both school and student‐teacher emerged as crucial factors in this respect. The student‐teachers' accounts show their social interactions with school staff to be meaningful in developing their ‘teacher self’ and to be profoundly emotionally charged. The implications for mentor and student‐teacher role preparation are discussed in this article.  相似文献   
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Abstract

The following paper should be seen as an addition to that provided in the Proceedings of the 7th ICTE.’ For reasons of brevity, it does not deal to any large extent with the background to the project, but details the progress of a study into the effects of introducing laptops into primary (elementary) school. The project has provided every pupil in one class with a laptop computer and has tracked the use being made of it as a curriculum tool for writing. The second phase of the project is under way, with a completion date of April 1991.  相似文献   
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Athletes need excellent vision to perform well in their sports, and many athletes have turned to vision training programs as a way to augment their traditional training regimen. The growing practice of ‘sports vision training’ relies on the notion that practice with demanding visual perceptual, cognitive, or oculomotor tasks can improve the ability to process and respond to what is seen, thereby improving sport performance. This enterprise is not necessarily new, but has been advanced greatly in the past few years by new digital technology that can be deployed during natural training activities, by perceptual-learning-inspired training programs, and by virtual reality simulations that can recreate and augment sporting contexts to promote certain sports-specific visual and cognitive abilities. These improved abilities may, in turn, instill a competitive advantage on the playing field, underscoring the potential value of these approaches. This article reviews emerging approaches, technologies and trends in sports vision training. Where available, critical review of supporting research is provided.  相似文献   
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本文假定有些对象(例如福尔摩斯)是不存在的.关于这些对象,人们是应该采取实在论的立场,还是反实在论的立场呢?根据实在论,一个包含非存在对象的可能世界的域与该可能世界上的存在对象具有什么性质、做出什么行为无关;根据非实在论,一个包含非存在对象的可能世界的域依赖于该可能世界上的存在对象具有什么性质、做出什么行为.这里的分歧在于,非存在对象出现在(一个世界的)量化/指称域中是否依赖于(在该世界中)存在对象具有哪些性质,特别地,比如是否依赖于能够讲述故事的情感生物的行为?在<走向非存在>(牛津大学出版社,2005)一书中,我给出了一种内涵语言的语义学,以实在论的方式来处理非存在对象.本文旨在提供一种非实在论的语义学,以非实在论的方式来处理非存在对象.实在论解释是定域的,与此不同,非实在论解释是变域的.在非实在论语义下,关于非存在对象的非实在论直觉可被尊重,这主要体现在对非存在对象和存在对象之间的"依存"关系的分析.关于非存在对象,本文和<走向非存在>分别以非实在论和实在论的方式来处理,这使进一步的比较和选择工作成为可能.  相似文献   
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