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OKIAS是一个具有知识检索服务和知识库管理、知识源管理和本体管理功能的学科数字信息群知识集成及应用系统,系统总体采用应用层、知识层和数据层的分层设计,对领域本体、知识管理、知识导航和知识检索以及系统数据库进行设计.本文论述OKIAS系统实现中的关键技术,包括基于Protégé的本体开发技术、本体方法论的信息检索系统实现技术及系统的平台解决方案和开发技术. 相似文献
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针对分布异构环境下企业数据集成的难点问题,将XML、本体和多Agent技术相结合,构建了一个基于本体的多Agent企业数据集成模型,分析了模型的层次结构,并详细探讨了系统实现的关键技术问题,最后以一个实例描述了系统的流程。采用本体技术来实现信息资源的组织,描述信息资源的特性,获取数据的模式,可解决企业异质信息问题。采用多Agent技术实现数据的分发,向用户提供信息处理和检索,可解决企业信息资源的动态性和分布性问题。 相似文献
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企业架构提供一个构建企业战略、业务和IT技术之间的集成视角.企业本体是将本体理论应用于企业管理领域,建立知识共享和不同系统互操作的通信基础.基于企业本体理论,提出AFAR企业本体,包括5个公理和1个定理以及表示企业本体知识的4个特征模型和特征模型开发方法,并以某医院信息系统业务架构为实例构建其业务架构施动者交易图和业务流程过程结构图.研究结果表明,企业本体使企业的运作透明,从而得到一种被整个组织所理解和共享的共同语言. 相似文献
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知识集成有利于企业的知识创新,有利于提高企业的竞争优势,并形成企业的核心能力。因此,知识集成已经成为了知识管理研究领域的热点。已有的研究已经取得了一定的成果,但是已有研究过多地关注于知识集成的“显性知识与隐性知识的相互转化”、“本体构建”等方面,而忽视了对动态环境下的知识集成运行机理的深入探讨。基于此,本文在已有研究的基础上,分析了企业知识集成在动态环境下由“平稳态”到“激发态”再到“新的平稳态”而变化的特点,提出了动态环境下的企业知识集成模型（D-KIM）。该模型很好地揭示了在动态环境下企业知识集成状态由于受外部环境（包括宏观环境、中观环境和微观环境等）带来的“外部扰动”的影响而发生变化的规律。最后,通过构建系统动力学模型,对动态环境下的企业知识集成进行了进一步的分析。 相似文献
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本文分析了知识管理中的异构特点,描述了本体在知识管理中的相关技术,结合某物流企业的实例提出了知识管理中基于本体集成的框架。 相似文献
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在分析企业知识集成中存在的问题和语义Web的层次模型的基础上,以语义Web为技术支撑,探索基于语义Web的知识集成思路,提出一种基于语义Web的企业知识集成框架模型,并对其实现的关键技术作了进一步的阐述,该模型可以有效解决企业内各异构知识源的语义集成问题. 相似文献
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【目的/意义】构建集成创新驱动的企业知识库服务机理模型,完善企业知识库服务模式和方法,提升企业的集成创新优势。【方法/过程】基于市场需求,集成企业外部和内部知识,构建集成创新驱动的企业知识库服务机理模型,以实现员工知识能力和企业创新能力的提高。【结果/结论】知识库服务机理模型推动企业知识库服务理论的深入发展,使企业知识服务更加智能化、个性化,为面向集成创新驱动的企业知识库服务提供了理论支撑。【创新/局限】仅从理论上探讨企业知识库机理模型的构建,未实现企业知识库的具体功能。 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
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Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
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Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
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Leah A. Lievrouw 《The Information Society》1998,14(2):83-96
The main premise of this article is that in information societies generally, and in virtual social contexts particularly, a distinctive style of interaction to facilitate the communication of difference, heterotopic communication , has emerged. It rests on two cultural foundations: an ideological belief in the positive, socially integrating power of communication, and a prevailing ethic of instrumental rationality, subjective individualism, and strategically practiced self-interest. The former is demonstrated by the use of simulation and spectacle as sources of information; exhibitionism/voyeurism as a communicative style; and the awareness of surveillance. The latter is seen in the competitive use of knowledge as a commodity; a surface globalism masking deep parochialism; lateral as well as vertical information inequity; and the use of public versus private as strategies for engagement rather than as spaces. Those who engage in heterotopic communication resort to their 'own devices' both in the sense of personal agendas, strategies, interests, and interpretations, and in the form of the telecommunication tools that help realize them. These personal and technological devices allow individuals with the right educational and technical resources to avoid exposure to disagreement, difference, or other information that does not serve their direct purposes or reflect their particular views of the world; yet they also help convey the appearance of openness, availability, and cooperation. This style of interaction is used strategically in combination with information and communication technologies to gain social or economic advantages, but it may encourage social separatism and parochialism, inhibit the negotiation of disputes, and emphasize competing interests. 相似文献