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This article examines the extent to which family wealth affects the Black–White test score gap for young children based on data from the Panel Study of Income Dynamics (aged 3–12). This study found little evidence that wealth mediated the Black–White test scores gaps, which were eliminated when child and family demographic covariates were held constant. However, family wealth had a stronger association with cognitive achievement of school-aged children than that of preschoolers and a stronger association with school-aged children's math than on their reading scores. Liquid assets, particularly holdings in stocks or mutual funds, were positively associated with school-aged children's test scores. Family wealth was associated with a higher quality home environment, better parenting behavior, and children's private school attendance.  相似文献   
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Borrowing From e-commerce; Are Recommender Systems Good for Libraries? For past 10 years recommender systems have attempted to match customers to materials in the e-commerce world. Utilizing specifically designed recommender systems to meet the needs of patrons, collaborative filtering, and content-based recommender systems are the two basic types with several hybrids created from these two have been significantly enhancing digital library services. Security issues come into play in a special way with libraries, and plagiarism can also affect recommender quality. Open Source tools may be the answer for libraries and their customers, enabling a better utilization of all that a library has to offer.  相似文献   
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This paper explores critical notions about how improved understandings of students learning experiences within practical learning environments could sensitise teachers to appreciate the complex influences more that affect how levels of challenge and perseverance are constructed by students. The authors, in furthering their critique, build on the model of constructivism developed by Ollis and Sproule. This model attempted in embryonic terms to recognise the specific situational factors that most influenced the minded ways in which students identified and responded to learning challenges. In refining these ideas further the authors specifically consider how teaching games for understanding (TGfU) methodologies could be enhanced by recognising the meta-cognitions of students when constructing rich task led learning episodes. In conclusion, it is posited that comprehending the complexity of learning theory holds considerable promise for the ongoing development of physical education as a valuable and integral part of the school learning experience.  相似文献   
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Online subject guides are commonly used by libraries to provide information support to students. LibGuides (a cloud-based commercial product launched in 2007) represents one of the latest incarnations of the traditional subject guide or portal, and are widely used across American academic libraries. In Ireland however, library subject guides of entirely local design and hosted on a local web server still dominate.This paper outlines the project management process involved in implementing a LibGuides pilot at University College Dublin Library, including the planning, design and implementation of a new range of subject-related guides. The pilot nature of the project necessitated a strong focus on evaluation, particularly in assessing the effectiveness and suitability of LibGuides as a platform for delivering information literacy support, both from an administrative and end-user perspective. A two-stranded approach was used in this review process, incorporating quantitative web statistics and analytics alongside qualitative feedback from students, academic staff and Library staff.Feedback that was gathered suggested that the LibGuides subject guides were generally viewed very positively by both staff and students. Notwithstanding this, awareness (as indicated through usage statistics) remained moderate during the pilot, pointing to the importance of the visibility, positioning and promotion of guides.  相似文献   
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本刊自2010年第1期起将辟专栏连载英国大使馆文化处提供的系列稿件,为读者介绍英国文化,内容涵盖了假日、饮食、酒吧和英国皇室等方面。本栏目除文章外,每期还附有趣味小练习,另外,Wordoftheday板块每期为读者介绍一个俚语,读者在深入领略英国文化风采的同时,还可学习到原汁原味的英文。本期介绍的是几十年来英国人旅游习惯的变迁——过去,英国人总是热哀于境外游,而现如今,越来越多的英国人选择了国内游。  相似文献   
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