排序方式： 共有381条查询结果，搜索用时 15 毫秒
121.
《Journal of Informetrics》2014,8(3):581-593
Bornmann, Stefaner, de Moya Anegón, and Mutz (2014) have introduced a web application (www.excellencemapping.net) which is linked to both academic ranking lists published hitherto (e.g. the Academic Ranking of World Universities) as well as spatial visualization approaches. The web application visualizes institutional performance within specific subject areas as ranking lists and on custom tile-based maps. The new, substantially enhanced version of the web application and the generalized linear mixed model for binomial data on which it is based are described in this paper. Scopus data are used which have been collected for the SCImago Institutions Ranking. Only those universities and research-focused institutions are considered that have published at least 500 articles, reviews and conference papers in the period 2006–2010 in a certain Scopus subject area. In the enhanced version, the effect of single covariates (such as the per capita GDP of a country in which an institution is located) on two performance metrics (best paper rate and best journal rate) is examined and visualized. A covariate-adjusted ranking and mapping of the institutions is produced in which the single covariates are held constant. The results on the performance of institutions can then be interpreted as if the institutions all had the same value (reference point) for the covariate in question. For example, those institutions can be identified worldwide showing a very good performance despite a bad financial situation in the corresponding country. 相似文献
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以运用C#2010.net语言、JavaScript 脚本开发水文站实时信息 GIS 展示软件为实例,提出了在无专业GIS服务器的前提下,利用Google Map API开发基于WinForm的桌面GIS软件的技术思路,并提供了核心的程序代码。 相似文献
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基于Google Map API实现某一领域专家地域分布的可视化,构建领域专家地图。该地图是基于知识网络的专家库系统的核心模块,可视化、直观地呈现某学科领域专家的地域分布及有关信息,提供一种新的知识检索途径。 相似文献
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通过对谷歌图书搜索的在线查找和分析,反驳了谷歌复制不构成侵权的观点并分析其图书搜索对版权合理使用制度的适用情况。最后结合此案,提出网络环境下完善合理使用制度的几点思考。 相似文献
126.
云计算已经成为学术界与工业界共同的研究热点。文章阐述Google云计算平台的技术框架,分析并深入比较网络应用程序的传统开发方式与基于Google App Engine平台开发的区别,并给出基于Google App Engine平台上开发网络应用程序的基本过程,说明了云平台下开发的优势。 相似文献
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丁政 《洛阳师范学院学报》2008,27(2):93-95
"互联网用作语料库"是一种把互联网上的文本用作语料资源的新兴方法。互联网并非标准意义的语料库,但因包含庞大数量的文本而有具有不可忽视的实用价值。"互联网用作语料库"方法已广泛服务于语言数据挖掘以及语言学假设检验。目前已有数种专门化检索工具问世,同时直接应用通用型搜索引擎搜集语料是应用最广泛的方法。本文介绍"互联网用作语料库"的发展现状、基础理论、基本原理、应用策略与手段。 相似文献
128.
图书馆应对Google影响的策略 总被引：3，自引：0，他引：3
分析了以Google为主的搜索引擎对图书馆服务工作的影响,提出加强图书馆服务工作的对策。 相似文献
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AbstractThere is a paucity of granular, high-resolution broadband data in the United States, which limits the prospects of informed telecommunications policy debates. In the absence of regulation requiring telecommunication providers to accurately report service footprints, pricing, and service quality data, providers refuse to disclose this information, routinely citing competition as the primary reason for keeping network and pricing data obfuscated. In addition, many secondary datasets needed for broadband planning and policy research, such as parcel or address point data, are equally challenging to gather. These datasets are often controlled by county governments, with no overarching access policy, resulting in neighboring counties with widely divergent policies for the release of these important data. In this article we explore the challenges of open data and its impacts on telecommunication policy development. A recent project which explored the spatial provision of Google Fiber in the Kansas City metropolitan area helps to highlight these difficulties. Basic strategies for mitigating information asymmetries and the lack of data transparency for telecommunication policy analysis are discussed. 相似文献
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从深度利用数据资源和助力科研的角度,对比分析Web of Science和Google Scholar在化学领域中的性能差异。通过对比分析,从检索性能、分析性能、覆盖能力、引文跟踪、定题跟踪等方面进行比较和案例分析。发现Web of Science在化学领域具有权威性、稳定性、功能性等优势,其专业性能尚未充分利用。指出图书馆深入挖掘数据资源实用价值,提出从检索到发现的服务思路,推动技能服务和分析服务的双向服务模式。 相似文献