第十一届全运会女子举重比赛分析     

张守忠  王志鹏  房巍  李辉 《吉林体育学院学报》2011,(5):69-71

为了巩固我国女子举重运动在世界举坛的优势地位,对第十一届全运会女子举重比赛进行了多角度分析。结果发现,我国女子举重运动员整体表现优异。比赛中,老运动员发挥稳定,新人表现抢眼;奖牌分步更广,湖南队表现突出。但是,开把过高和试举成功率低影响了运动员的正常发挥;在小级别比赛中,第二次和第三次试举加2kg和3kg占的比例最多,而在大级别比赛中,第二次和第三次试举加3kg和5kg占的比例最多。部分教练员加重方案运用的不够合理,临场指挥有待提高;小级别在世界女子举坛依然占据着统治地位,中大级别优势已不明显,在2012年伦敦奥运会上我们将面临更多的挑战。  相似文献   

OPAC拼音搜索功能的设计与实现     

黎邦群 《现代图书情报技术》2011,(9):88-93

针对当前汉字输入不便而造成OPAC检索效率低下的现状,进行拼音搜索的研究。对书目数据和用户检索行为进行收集、利用、挖掘和整理,以此构建动态汉字拼音数据库,实现基于AJAX的拼音输入提示、基于ASP的拼音搜索提示以及直接拼音搜索功能,对用户的检索行为给出检索建议,以期简化输入、提升检索体验。  相似文献   

基于查询意图聚类的实时搜索建议     

周之诚 《现代图书情报技术》2011,27(2):87-93

对于搜索引擎返回的结果太多且较少考虑用户个性差异等缺陷,提出根据用户查询意图,实时给予多个主题的搜索建议,帮助用户更准确地描述所需信息,修正查询词与真实意图之间的差距,提高检索效率。同时运用K-means算法,对资源类别的意图特征值相似用户进行聚类,缩小查找目标对象最近邻居的范围,提高搜索建议的实时响应速度。实验结果表明,该方法是可行的。  相似文献   

基于相关性判据的学术信息检索系统成功模型建构     

成颖 《现代图书情报技术》2011,(9):46-53

基于相关性判据研究成果、学术信息检索系统特征调研成果、信息系统成功模型(ISSM)以及TEDS模型构建面向相关性判据的学术信息检索系统成功模型,对模型中的关系进行简要分析,并提出研究假设。  相似文献   

学术新人的信息行为研究     

成颖  孙建军  郑彦宁  潘云涛 《图书情报知识》2011,(4):63-70

本文以三年级本科生为研究对象,通过给学生布置难度较大的课程论文,然后要求学生详细记录信息检索过程中的检索策略、检索过程、检索结果及思考。基于文本数据,采用内容分析法分析了实验对象的数据库、检索字段、排序方式以及限定条件的选择、检索结果记录数与二次检索的关系、检索式的构建中的用户行为。论文提炼了学生的检索模式,分别为文献计量模式、参考文献模式、核心期刊模式、搜索引擎模式、渐进模式以及常规模式。  相似文献   

数字环境下文献分类法的检索应用及其发展     

马张华 《大学图书馆学报》2011,29(4):64-68,76

在数字环境下,文献分类检索应以等级浏览形式为主,重视易用性、灵活性,同时进行必要的多维化改造、完善相关关系揭示等。数字化环境下的应用必然给类表带来结构上的变化,需要进行相应技术探索,并应根据其在检索体系中的定位,研讨应用规律。另外,表达了对检索软件编制的一些看法。  相似文献   

Real time search on the web: Queries,topics, and economic value     

Bernard J. Jansen  Zhe Liu  Courtney Weaver  Gerry Campbell  Matthew Gregg 《Information processing & management》2011

Real time search is an increasingly important area of information seeking on the Web. In this research, we analyze 1,005,296 user interactions with a real time search engine over a 190 day period. Using query log analysis, we investigate searching behavior, categorize search topics, and measure the economic value of this real time search stream. We examine aggregate usage of the search engine, including number of users, queries, and terms. We then classify queries into subject categories using the Google Directory topical hierarchy. We next estimate the economic value of the real time search traffic using the Google AdWords keyword advertising platform. Results shows that 30% of the queries were unique (used only once in the entire dataset), which is low compared to traditional Web searching. Also, 60% of the search traffic comes from the search engine’s application program interface, indicating that real time search is heavily leveraged by other applications. There are many repeated queries over time via these application program interfaces, perhaps indicating both long term interest in a topic and the polling nature of real time queries. Concerning search topics, the most used terms dealt with technology, entertainment, and politics, reflecting both the temporal nature of the queries and, perhaps, an early adopter user-based. However, 36% of the queries indicate some geographical affinity, pointing to a location-based aspect to real time search. In terms of economic value, we calculate this real time search stream to be worth approximately US $33,000,000 (US $33 M) on the online advertising market at the time of the study. We discuss the implications for search engines and content providers as real time content increasingly enters the main stream as an information source.  相似文献   

相似检索与链接检索的性能评价研究     

费巍  张进 《情报杂志》2011,30(2)

Google为用户提供了多种检索功能,但这些检索功能的性能如何却少见于相关文献中。作者对Google的两种较为独特的检索功能进行了评析,分别是相似检索和链接检索,并以普通检索作为评价的标准。本文采用了20个检索式和20个目标网页,对相似检索、链接检索和普通检索的检索性能差异性进行了评价。研究中主要利用单因素方差分析法和回归分析法。研究结果显示普通检索表现最好。研究成果能帮助用户对相似检索和链接检索有较为清晰的认识,并且可以了解Google在这两种检索功能上所表现出的不同的检索性能。  相似文献   

Measuring project performance by applying social network analyses     

《国际创新研究学报(英文)》2021,5(2):35-55

It is often argued that the core of organizational success is efficient collaboration. Some authors even posit that efficient collaboration is more important to organizational innovation and performance than individual skills or expertise. However, the lack of efficient models to manage collaboration properly is a major constraint for organizations to profit from internal and external collaborative initiatives. Currently, much of the collaboration in organizations occurs through virtual network channels, such as e-mail, Yammer, Jabber, Microsoft Teams, Skype, and Zoom. These are even more important in situations where different time zones and even threats of a pandemic constrain face-to-face human interactions. This work introduces a multidisciplinary heuristic model developed based on project risk management and social network analysis centrality metrics graph-theory to quantitatively measure dynamic organizational collaboration in the project environment. A case study illustrates the proposed model's implementation and application in a real virtual project organizational context. The major benefit of applying this proposed model is that it enables organizations to quantitatively measure different collaborative, organizational, and dynamic behavioral patterns, which can later correlate with organizational outcomes. The model analyzes three collaborative project dimensions: network collaboration cohesion evolution, network collaboration degree evolution, and network team set variability evolution. This provides organizations an innovative approach to understand and manage possible collaborative project risks that may emerge as projects are delivered. Organizations can use the proposed model to identify projects' critical success factors by comparing successful and unsuccessful delivered projects' dynamic behaviors if a substantial number of both project types are analyzed. The proposed model also enables organizations to make decisions with more information regarding the support for changes in observed collaborative patterns as demonstrated by statistical models in general, and linear regressions in particular. Further, the proposed model provides organizations with a completely bias-free data-collection process that eliminates organizational downtime. Finally, applying the proposed model in organizations will reduce or eliminate the risks associated with virtual collaborative dynamics, leading to the optimized use of resources; this will transform organizations to become more lean-oriented and significantly contribute to economic, social, and environmental global sustainability.  相似文献   

搜索引擎优化策略研究     

郑淑梅  谢人强 《襄樊职业技术学院学报》2014,(1):18-20,25

搜索引擎是互联网上应用最为广泛的工具,是用户寻找网上信息和资源的主要途径。搜索引擎营销已经成为网络营销最重要的组成部分。如何使自己的网站被主要的搜索引擎收录,并且得到较好的排名,成为网站建设者们不得不考虑的问题。文章首先阐述了搜索引擎的基本含义,然后介绍了搜索引擎优化的重要意义,最后提出了搜索引擎优化的策略。  相似文献