Google Scholar Usage: An Academic Library's Experience     

《Journal of Web Librarianship》2013,7(2):94-108

Google Scholar is a free service that provides a simple way to broadly search for scholarly works and to connect patrons with the resources libraries provide. The researchers in this study analyzed Google Scholar usage data from 2006 for three library tools at San Francisco State University: SFX link resolver, Web Access Management proxy server, and ILLiad interlibrary loan server. Overall, the data suggested that Google Scholar had become a very useful resource in the library and was a significant addition to the library's collection of research databases. SFX data revealed requests from Google Scholar grew ten-fold from 2006 to 2011, and that Google Scholar became the top-ranked SFX source for requests in 2011. Library patrons favored Google Scholar over San Francisco State University's federated search tool, MetaLib, and it has become an important source for interlibrary loan requests. Analysis of San Francisco State University usage data will assist other libraries in their decisions about the implementation of Google Scholar.  相似文献   

元数据标签应用现状调查及中文网络资源组织的系统模型的探索   总被引：4，自引：3，他引：4  

蒋鸿标 《图书情报工作》2001,45(12):82-84

本文第一部分分析了网络资源利用中的困难和现有的网络资源组织、整理方式存在的缺陷,提出以编目方式组织、整理网络资源的设想。 第二部分调查了元数据标签（meta tag）被搜索引擎的支持情况和在网页中的实际应用情况,并就调查结果作了讨论、分析,提出元数据标签具有在大范围内著录、组织网络资源的潜在可能性,指出元数据标签使用中有待解决的许多问  相似文献   

涉及单位球体积与调和数的一些单调性质与不等式     

尹枥  窦向凯 《滨州学院学报》2013,(3):78-81

通过勒让德恒等式和经典的不等式理论,对涉及n维单位球体积与调和数的一些单调性质做了深入的研究,得到了一些新的不等式.  相似文献   

Understanding Chinese online users and their visits to websites: Application of Zipf's law     

Qiqi Jiang  Chuan-Hoo Tan  Chee Wei Phang  Juliana Sutanto  Kwok-Kee Wei 《International Journal of Information Management》2013

Competition for consumers to visit company websites has intensified in recent years. An important indicator of website popularity (and consequent survival) is the extent to which the website can draw consumer visits vis-à-vis other websites. A majority of the current understanding on consumer visits is limited to a single website, and leaves little knowledge on the performance of one website compared with others. In tracking the Internet usage behavior of 200 individuals in Mainland China for 30 consecutive days, we applied Zipf's law to identify the divergence points separating popular websites from non-popular ones. Two measurements were used, namely, visit traffic (number) and visit engagement (time spent). We observed that 94.87% of the entire visit traffic is devoted to 15.08% of all visited websites, whereas 84.63% of engagements are on the top 6.16% visited websites. These findings suggest that few websites accounted for the bulk of online traffic and time. Further, we segmented the dataset based on two key proxy variables of user demographics, which are gender and occupation. The findings on visit traffic remained salient after considering user segments, but the findings on website engagement varied across different user segments. Our further analysis, which categorized the visited websites by their main service, revealed the type of Internet users attracted to popular websites.  相似文献   

Web and social media usage by museums: Online value creation     

Antonio Padilla-Meléndez  Ana Rosa del Águila-Obra 《International Journal of Information Management》2013

This paper contributes to the understanding of online strategies in the context of museums as examples of cultural organisations, an underrepresented sector in the information management literature. It presents a theoretical framework for understanding the online strategies of museums’ use of Web and social media, their sources of online value (efficiency, novelty, lock-in, complementarities) and some measurements of Internet performance, such as the Alexa Internet ranking and the number of followers of museums in social media. This type of analysis has not been conducted before and the findings will help museum curators and managers of other cultural institutions to appreciate the impact of these technologies and to make better informed decisions regarding online strategies and resource allocation. In addition, the results of this research are applicable to similar organisations, such as archives and cultural exhibitions, as well as to other service organisations related to information, education and entertainment activities.  相似文献   

论模糊语言在应用文中的正确规范使用     

张中伟 《四川教育学院学报》2012,28(3):81-83

在社会生活日益现代化和语言表达日趋精密的今天,语言材料的模糊性非常明显。许多语境中,应用文使用模糊语言进行准确的表达。文章探究了模糊语言的客观性、作用、功能和使用原则,对于积极利用模糊语言和发挥它在修辞中的作用,提高应用文表达的灵活性、概括力和表现力,具有重要的理论价值和实践意义。  相似文献   

一类加权最小二乘模糊线性回归     

梁艳  张文林 《宁夏师范学院学报》2012,33(3):19-23,31

讨论了输入、输出及回归系数都是LR-型模糊数的模糊线性回归模型参数估计的加权最小二乘法.该方法根据决策者对训练数据的置信度对观测数据设置不同的权重,从而得到能有效抵御异常值干扰的预测模型.  相似文献   

基于递推关系a_n=pa_n-1+qa_n-2的数列的性质     

李滨  谭琼 《四川教育学院学报》2013,29(5):109-110,124

在组合数学中关于数列的性质是一个难处理的问题,文章研究基于一类特殊递推关系的数列的性质,得到一些重要的结果。  相似文献   

共生视野下初中进城务工人员子女与城市当地学生的数感差异性研究     

叶蓓蓓  罗荔龄  梁鑫 《数学教育学报》2013,(3)

使用改编的问卷对桂林市3所进城务工人员子女和城市当地学生共校初中数感发展调查后进行差异性分析,发现：（1）自然的共校共生环境下初中阶段进城务工人员子女与城市当地学生数感总分无显著差异,“能比较数的相对大小”维度上城市当地学生优于进城务工人员子女,应加强进城务工人员子女对数的密集性理解教学;（2）共校共生环境下的两年级进城务工人员子女与城市当地学生的差异分析显示,城市当地学生促进进城务工人员子女的数感发展,应使用合适的共生教学策略促进城市当地学生数感的良好发展;（3）共校共生环境下不同学校不同年级之间进城务工人员子女与城市当地学生的差异存在于不同维度,应指引专业的共生环境搭建,以促进进城务工人员子女与城市当地学生数感水平的共同发展。  相似文献   

阶梯水价对城市居民用水量及低收入家庭福利的影响     

廖显春  夏恩龙  王自锋 《资源科学》2016,38(10):1935-1947

城市水资源短缺已然成为中国最严重的环境问题之一。在气候变化及社会经济快速发展的背景下,水资源短缺问题加剧。本文采用2002-2012年中国285个地级市的面板数据,实证分析了递进阶梯水价对中国城市居民生活用水影响。计量结果表明,在统一水价制度框架下,水价的提高确实能减缓用水短缺,但由于水价缺乏弹性,统一水价调节用水的功能有限。此外,进一步实证研究显示,已实施阶梯水价的城市比统一水价的城市能减少16.58%水消耗。除价格因素之外,实证发现,居民家庭人均可支配收入、家庭总人口数、从业人员数占比、年均降雨量以及年平均气温导致了家庭水消耗增加,而受教育程度和人口的聚集导致家庭水使用量减少。以此为基础,本文设计了四级阶梯水价。通过构建非线性预算约束的家庭经济模型以及家庭福利分析,结果发现,采用四级阶梯水价比国家发改委（NDRC）的三级阶梯水价不仅能提高水资源使用效率,而且预测得知可提高低收入家庭福利为107.6元。  相似文献