Measuring Search Engine Quality

The effectiveness of twenty public search engines is evaluated using TREC-inspired methods and a set of 54 queries taken from real Web search logs. The World Wide Web is taken as the test collection and a combination of crawler and text retrieval system is evaluated. The engines are compared on a range of measures derivable from binary relevance judgments of the first seven live results returned. Statistical testing reveals a significant difference between engines and high intercorrelations between measures. Surprisingly, given the dynamic nature of the Web and the time elapsed, there is also a high correlation between results of this study and a previous study by Gordon and Pathak. For nearly all engines, there is a gradual decline in precision at increasing cutoff after some initial fluctuation. Performance of the engines as a group is found to be inferior to the group of participants in the TREC-8 Large Web task, although the best engines approach the median of those systems. Shortcomings of current Web search evaluation methodology are identified and recommendations are made for future improvements. In particular, the present study and its predecessors deal with queries which are assumed to derive from a need to find a selection of documents relevant to a topic. By contrast, real Web search reflects a range of other information need types which require different judging and different measures.     

Invisible children? The need for support groups for siblings of disabled children

Previous research and first-hand experience suggest that a child with a disability can have a profound effect on family life. Although the need for sibling support has been acknowledged in legislation, the implications for non-disabled siblings remain unclear. In this article, Angie Naylor, lecturer in psychology, and Phil Prescott, senior lecturer in childhood and youth studies, both based at Edge Hill, review a number of key themes emerging from the literature on sibling support. They go on to report the findings from an in-depth study of one sibling support group. The work was carried out in partnership with Barnardo's in the north-west of England and involved setting up a sibling support group, in response to an analysis of local need, and evaluating its impact. This research indicates a clear need for further service provision to meet the needs of the siblings of disabled children who attended the scheme. Angie Naylor and Phil Prescott argue for a reinvigorated debate about the needs of such children and champion the importance of listening to children and valuing what they have to say. The results of this small-scale evaluation project have clear implications for future research and, potentially, for policy and practice.     

南京体院内部审计工作现状浅析

用献资料法和比较法对南京体院的内部审计工作研究后，发现近5年来，体院的内部审计在财务审计方面取得了一定的成绩，具有自身的特色，为学院制定制度和加强财务管理提供了有力的依据。机构的改革、审计人员素质的提高和审计领域的推广，将有利于体院内部审计发挥更大的效能。     

对中长跑运动员训练机能评定的实验研究

观察了不同训练水平男子中长跑运动员不同强度训练负荷后血清免疫球蛋白水平的变化。结果提示:大强度训练可降低男子中长跑运动员机体的体液免疫水平,其测定有助于掌握运动强度和负荷量,为合理安排训练计划提供依据。     

日本体力测量的改革

对20世纪末日本的体力测量改革的背景、目的和改革后的新体力测量方案的构成和特点进行了分析,结合我国体质测量中存在的问题,指出可以借鉴日本的经验和研究成果,加强体质测量的基础研究,提高体质测量的质量。     

海口市中小学生身体素质评价标准的制定

为了评价海口市中小学生身体素质,提高他们参加体育锻炼的积极性,以1995年海口市中小学生2400人体质调研数据为样本,使用百分位数法制定了海口市中小学生身体素质评价标准.     

网络信息环境下馆藏评价标准的变革

文章以现代图书馆馆藏建设的变革为切入口，评析了传统馆藏评价标准。这些基础上重点探讨了网络信息环境下馆藏评价标准的变革。     

试论以人的发展为中心的体育教育评价取向

长期以来体育教育评价中过多地强调了体育的功效性,注重运动成绩的评价,而忽视以人为中心的教育指向,使评价作为整个体育教育系统的闭合环节应起到的反馈检验作用与学校体育目标错位,本选题研究对现有的体育教育评价有效性提出质疑.在教育现代化的大背景下,从素质教育理念出发提出以人的发展为中心的评价对策,即不应盲目追求客观和量化,认识到体育教育与评价的相对性,依据体育评价的互动性特点,建立起着眼于学生学习过程的纵向评价和学生之间学习效果的相对差距的横向评价,再辅之于学生的自我评价.     

论体育与健身课程学生成绩的评价

运用文献资料法和调查法,在分析现行体育课程学生成绩评定方法不足的基础上,提出对学生学习成绩评定应采用终结性评价与过程性评价相结合的综合评价方法。