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对机构知识库发展现状、"中国旅游院校五星联盟"和"五星联盟图书馆"简单介绍后,探索高校机构知识库联盟建设模式,并以五星联盟机构知识库为例,详细阐述了联盟机构知识库建设的举措,包括:建设模式、组织管理、技术、平台开发以及服务方式等。 相似文献
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机构知识库的构建与高校图书馆的工作创新 总被引：6，自引：0，他引：6
阐述了机构知识库的概念及其产生和发展的概况,认为依托高校数字图书馆建设机构知识库具有非常重要的现实意义.介绍了高校机构知识库建设的模式.从高校数字图书馆所具有的优势出发提出了高校图书馆在建设机构知识库过程中的工作创新途径. 相似文献
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本文从知识库的建设内容，标准规范，建设平台和服务模式介绍了高校图书馆知识库服务体系的建立。通过知识库高校图书馆可以建立一个具有高校特色、专业化程度高等特点的知识服务模式。 相似文献
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基于知识库的高校图书馆知识服务 总被引：1，自引：0，他引：1
李晓红 《信息管理(上海)》2007,20(1):46-48
本文从知识库的建设内容，标准规范，建设平台和服务模式介绍了高校图书馆知识库服务体系的建立。通过知识库高校图书馆可以建立一个具有高校特色、专业化程度高等特点的知识服务模式。 相似文献
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通过对常州、苏州和无锡3个城市的7所高校的教师进行问卷调查,可总结出高校机构知识库2.0应用框架.高校机构知识库2.0系统应具备数据层、技术层、应用层和服务层.建设者可对机构知识库2.0涉及的要素逐一分解与归纳,从技术、资源、管理和服务4个方面总结出机构知识库2.0系统的构建策略,根据机构知识库2.0的建设原则及要求制定建设目标,在目标指引、原则要求的规划下,具体实施构建策略,实现机构知识库2.0系统建设的假设结果. 相似文献
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雷雨 《大学图书情报学刊》2013,31(5):16-18,65
开放存取及机构知识库的发展,给高校图书馆的发展带来了机遇,也使高校图书馆面临着前所未有的挑战。文章通过对世界发达国家机构知识库建设的介绍,阐述了我国高校图书馆建设机构知识库的必要性和可行性,并提出了"积极宣传和推广机构知识库"等数条具体措施。 相似文献
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高校在机构知识库建设方面存在优势,而加入机构知识库联盟对于实现跨越式发展具有重要意义.根据我国高校机构知识库联盟建设现状,对比三大高校机构知识库联盟的基本情况,提出国内高校机构知识库联盟建设应设计松耦合联盟组织机制,建立数据管理标准和规范,提升高校机构知识库联盟建设力度等发展策略. 相似文献
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RDA标准与关联数据技术为图书馆机构知识库的建设提供了新方向,文章简要介绍了RDA和关联数据技术的概念与特点,从数据层、分析层和应用层构建了基于RDA和关联数据的图书馆机构知识库模型,最后从服务、资源与机构三个角度提出了基于RDA和关联数据的图书馆机构知识库构建策略,以期为图书馆知识服务效能提升提供一些参考。 相似文献
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信息开放与共享已经被学术界广泛接受并形成普遍共识,随着信息开放共享实践的不断深入,机构知识库(IR)建设在我国学术机构正迅速展开。为加强各机构间在机构知识库技术建设、内容建设、政策机制建设上的学术交流,分享最佳实践经验,研究解决机构知识库建设中的关键问题,促进机构知识库的可持续建设与维护,中国机构知识库推进工作组联合中国图书馆学会专业图书馆分会、中国图书馆学会高校图书馆分会,定于2013年9月26-29日召开"2013中国机构知识库"学术研讨会,主题:机构知识库的最佳实践。会议将围绕中文机构知识库建设与服务上的实际战略、具体模式进行研究交流与讨论,欢迎中国大陆地区以及港澳台地区的图书情报机构工作者踊跃投稿。 相似文献
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Jaemin Jung 《媒体管理杂志》2013,15(4):237-250
Abstract This study examined the degrees of product diversification of media conglomerates since the Telecommunications Act of 1996 and tested the impact of product diversification of the firms on their financial health. The strategy of related product diversification enables firms to gain market power and synergy effect, then improves financial performance. Based on that assumption, for a sample of 26 media firms from 1996 to 2002, this study conducted a regression analysis to test the hypotheses. The results showed two contradictory curvilinear models. First, revenue, EBITDA and sales growth rates revealed a U‐shaped relationship with diversification. That is, performance decreased as firms shifted from concentrated business strategies to related diversification, but performance increased as firms changed from related diversification to unrelated diversification. On the other hand, financial efficiency variables measuring management effectiveness or profitability (ROS, ROA and ROE) and stock market evaluation (earnings per share) showed an inverted U‐shape relationship. Thus, the unrelated diversification led to a decrease in financial efficiency. 相似文献
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《Journal of Media Economics》2013,26(3):183-202
This study examines the impact of media firms' diversification on their financial performance based on the product and geographical diversification activities and performance of the top 26 media firms from 1991 to 2002. The empirical results generally indicate that related product and international diversification contributes to better financial performance. However, excessive diversification, which leads to a high degree of unrelated diversification, might decrease performance. There also appears to be a hurdle level for diversification, prior to which expanding businesses in product and international markets may need considerable investment and produce negative cash flow. Beyond that threshold, dual diversification significantly contributes to increases in cash flow. 相似文献
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This study examines cable system diversification into three nontraditional services: pay-per-view television, high-speed Internet access, and telephony. An econometrics model based on the Industrial Organization Model is used to explore the factors that have led to variation in diversification among cable systems. Specifically, this study examines how three sets of variables, namely, cable system characteristics, market structure, and market demographics, influenced cable system diversification. Multiple linear regression was performed to identify the determinants of cable system total degree of diversification, which is defined to be the number, from 0 to 3, of the three nontraditional services offered by a cable system. Regression results indicate that Multiple System Operator (MSO) ownership, the number of basic cable service subscribers, and the number of broadcast television stations receivable over the air all had a statistically significant positive relationship to cable system total degree of diversification, whereas the number high-speed Internet service providers in a cable franchise area had a statistically significant negative relationship to cable system's total degree of diversification. 相似文献
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本文指出目前浙江省文化产业产权多元化改革过程中存在的问题,探讨了浙江省文化产业产权多元化改革的三种改制模式,提出推进产权多元化改革的对策建议。 相似文献
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Coverage-based search result diversification 总被引：1，自引：0，他引：1
Traditional retrieval models may provide users with less satisfactory search experience because documents are scored independently and the top ranked documents often contain excessively redundant information. Intuitively, it is more desirable to diversify search results so that the top-ranked documents can cover different query subtopics, i.e., different pieces of relevant information. In this paper, we study the problem of search result diversification in an optimization framework whose objective is to maximize a coverage-based diversity function. We first define the diversity score of a set of search results through measuring the coverage of query subtopics in the result set, and then discuss how to use them to derive diversification methods. The key challenge here is how to define an appropriate coverage function given a query and a set of search results. To address this challenge, we propose and systematically study three different strategies to define coverage functions. They are based on summations, loss functions and evaluation measures respectively. Each of these coverage functions leads to a result diversification method. We show that the proposed coverage based diversification methods not only cover several state-of-the-art methods but also allows us to derive new ones. We compare these methods both analytically and empirically. Experiment results on two standard TREC collections show that all the methods are effective for diversification and the new methods can outperform existing ones. 相似文献
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城市图书馆在公共文化服务体系中的多元化建设 总被引：2，自引：0，他引：2
公共图书馆作为国家信息基础设施建设的一部分,在现代化公共文化服务体系建设进程中受到了普遍重视。城市公共图书馆服务体系的建设应遵循公益性、便利性、多样性原则。城市公共图书馆服务体系的多元化模式主要表现在运作机制的多元化、服务方式的多元化及社区图书馆（室）建设的多元化等方面。 相似文献
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多元化经营是企业成长壮大到一定阶段的发展战略选择。多元化经营包括同心多元化、横向多元化、纵向多元化和无关联多元化四种主要形式。出版集团要充分认识多元化经营的利弊,做好出版主业是基础,应该根据关联度和自己的专长,适时适度地开展多元化经营,还要注意企业文化建设与人才的培养。 相似文献
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Re-ranking the search results in order to promote novel ones has traditionally been regarded as an intuitive diversification strategy. In this paper, we challenge this common intuition and thoroughly investigate the actual role of novelty for search result diversification, based upon the framework provided by the diversity task of the TREC 2009 and 2010 Web tracks. Our results show that existing diversification approaches based solely on novelty cannot consistently improve over a standard, non-diversified baseline ranking. Moreover, when deployed as an additional component by the current state-of-the-art diversification approaches, our results show that novelty does not bring significant improvements, while adding considerable efficiency overheads. Finally, through a comprehensive analysis with simulated rankings of various quality, we demonstrate that, although inherently limited by the performance of the initial ranking, novelty plays a role at breaking the tie between similarly diverse results. 相似文献
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关于图书馆绩效评估的研究与实践 总被引：21，自引：1，他引：21
图书馆绩效评估是对图书馆各项资源的投入和产出效益的比较。我国图书馆绩效评估经历了初步发展阶段、多元化发展阶段和转型发展阶段。图书馆绩效评估研究与实践的发展呈现出评估指标标准化、评估对象数字化、评估主体多元化、评估客体整体化的态势。参考文献10。 相似文献
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中国报业集团多元化拓展的基本路径 总被引：1，自引：0，他引：1
中国报业集团的业务结构存在明显不足。多元化是优化业务结构的基本战略之一。中国报业集团不能盲目多元化,应该遵循四条基本路径:价值链活动共享驱动的相关多元化,竞争力共享驱动相关多元化,竞争驱动的相关多元化,投资驱动的非相关多元化。 相似文献