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基于网站自身数据的C2C在线拍卖运营研究 总被引：2，自引：0，他引：2
近年来,电子商务对传统商业社会产生了越来越大的影响,同时也在互联网上创造了一系列新的商业模式.在线拍卖无疑是这些新兴商业模式的典型代表.本文借助于C2C在线拍卖网站本身拥有的拍卖数据资源,定义相关研究指标,采用数据挖掘的思想,设计有效的数据维度,借助决策树模型从拍卖的收费策略来探讨C2C在线拍卖的盈利模式,并通过回归分析挖掘影响在线拍卖运营效果的主要因素,从整体上对在线拍卖的运营管理进行研究并为C2C在线拍卖网站运营策略的制定提出一些思路和建议. 相似文献
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构建高校网站评价指标体系,建立高校网站模糊综合评价模型,综合应用层次分析法和模糊评价方法,较好地实现对高校网站的综合评价。 相似文献
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电子商务网站可信度评价模型 总被引：2，自引：0，他引：2
基于第三方认证机构的视角，构建了电子商务网站的信用评价指标体系及评价因素集，并建立灰色关联信用评估模型，以图对电子商务网站信用的综合评估提供一个方法。 相似文献
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基于多层模糊的陕西省农业信息网站评价方法研究 总被引：1，自引：0，他引：1
在建立农业信息网站的评价指标体系及利用专家意见法(德尔菲法)确定各指标的权重基础上,使用多层模糊综合评判的数学方法,建立农业信息网站评价的综合评判模型,并用此模型对实例进行了计算,证明该模型的科学性、先进性和实用性. 相似文献
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[目的/意义]目前各大电子商务网站产生了海量的评论信息，对于消费者而言，查阅和分析这些信息将面临巨大的挑战。因此，有必要对评论的有用性进行综合评价，为消费者过滤出真正有价值的内容。[方法/过程]为此，本文提出并研究了一种在线消费者评论的有用性评价模型，为消费者的网购决策提供支持。该模型主要基于分类算法，识别在线消费者评论的有用性，并按其概率值大小进行排序。根据在线消费者评论的特点，提取了一系列分类特征用于其有用性评价，然后利用支持向量机对评论进行分类并从中识别有用的记录。利用来自B2C电子商务网站的3个在线消费者评论数据集（手机、女鞋、糖果巧克力）对提出的模型进行实证分析。[结果/结论]研究结果显示，该模型能够量化地评价在线消费者评论的有用性并对其进行有效的分类排序。该模型主要依赖语义特征进行排序，而对非语义特征的依赖较少。通过选择合适的概率阈值，能够缩小验证空间，并显著提升分类精确度。 相似文献
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针对科技部门网站建设的特点，本文建立了一套适合面向网站内容服务，网站功能服务和网站建设质量等综合评价目标的三级评价指标体系，并对华东地区地市级以上科技部门网站进行了系统的分类评价比较与研究，发现目前华东地区科技部门网站建设的发展特征和薄弱环节，并通过对网站评价得分的回归分析，分析影响科技部门网站建设的关键因素。[编者按] 相似文献
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在线评论的文本信息中包含了丰富的商品信息,文本的信息质量对于消费者的购买决策有着重要作用。运用层次分析法和模糊综合评价法建立了在线评论文本信息质量等级的评价指标体系,确定了各指标的权重,构造了隶属函数并确定隶属度,减少了评价的主观性,使评价结果更加客观真实。以凡客诚品在线购物网站中某商品的两条在线评论为例,在调研的基础上,针对其文本信息质量,运用模糊综合评价方法进行评价。 相似文献
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目的:对电子商务网站流量的各类指标进行逐级评价。方法:使用了变异系数法求取权重值,使用了模糊理论中的模糊综合评价方法进行评价。结果:构建了电子商务网站流量的综合评价模型,并对实例进行评价分析。结论:实例分析和结果表明,建立的电子商务网站流量的综合评价模型能够提供客观正确的评价结果。流量指标中的流量数量,流量质量,流量来源,流量转化对于现今的电子商务网站运营仍然具有很大相关性。 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