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将企业融资过程划分为资金筹集和资金配置2个阶段,基于我国38家互联网上市公司2014—2018年的融资数据,运用动态两阶段SBM模型对该行业上市公司融资效率进行测度,并从企业所有权性质等多个维度进行分析,通过Tobit回归构建融资效率影响因素模型.结果表明:该行业上市公司融资效率整体处于较低水平,资金配置阶段效率是导致整体融资效率较低的主要原因;从企业所有权性质来看,不同所有权企业融资效率有一定差距,民营企业整体以及各阶段效率最高,国有企业次之,外资企业最低;从融资效率影响因素来看,企业经营水平、企业盈利能力、企业规模和国内生产总值是影响该行业上市公司融资效率的主要原因. 相似文献
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以2012年我国10家高校上市公司的专利技术扩散现状分析为基础,从复杂网络视角分别构建专利技术扩散的Bass、MI和SW三种网络模型,进而选择8家高校上市公司和非高校上市公司进行配对比较分析,并应用CurveExpert软件进行网络模型拟合。网络参数比较分析后得出以下重要结论:复杂网络模型能用于描述专利技术扩散过程;高校上市公司要比非高校上市公司的专利技术扩散网络更加完善;不同高校上市公司的外部因素影响力可能是促进或制约作用;高校上市公司和非高校上市公司都会受到较大的内部影响,而且高校上市公司比非高校上市公司的内部影响要大;高校上市公司更倾向于以亲密型为主的研发合作关系,这种合作关系稳定。 相似文献
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性能良好的有效界面是高校技术创新得以成功实现的重要条件。．我们从内外两个方面分析影响西部地区高校技术创新宏观界面性能的凶素。从高校自身来看，高校的定位、合作基础和文化是影响西部地区高校技术创新宏观界面性能的主要因素。从外部环境来看，地方政府一高校的关系、地方政府在支持和引导高校技术创新上的行为特征等政府方面的凶素以及市场的创新活力、市场规则等市场因素对西部地区高校技术创新宏观界面性能产生重要影响。 相似文献
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大学生村官计划是国家层面作出的一项重大战略工程,它需要多个部门机构之间的协作与共同推进,高校理应在其中担负重要角色。从现有大学生村官工作的运作实践来看,高校可扮演"孵化器"角色、"助推器"角色、"服务器"角色和"思想库"角色。当前应推动高校融入大学生村官计划战略工程,并切实加强不同部门机构间的社会整合力度。 相似文献
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通过分析高校上市公司的赢利能力以及高校科研实力之间的关系,发现二者之间相关关系很小,即科研实力较强的高校上市公司的赢利能力和成长性并不是很高,说明高校企业在加速高校科技成果转化、促进产业结构调整和升级换代、推动国民经济增长等方面没有起到应该发挥的作用. 相似文献
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新形势下我国高校的科研体制改革 总被引：1，自引：0，他引：1
李喜岷 《科学学与科学技术管理》1999,20(8):37-39
由于国家确立了"科教兴国"的国策,实施了"国家知识创新工程"的发展战略和出台了<国务院关于"九五"期间深化科学技术体制改革的决定>,使许多高校对科研在办学中的地位有了新的认识.从笔者见到的武汉、西安、郑州近20所高校的科研体制改革文件和材料来看,许多高校都已认识到抓好科研是新时期下提高办学层次和知名度的最主要途径,因而竞相加强了对科研的扶持力度,加快了科研体制的改革步伐. 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 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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Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 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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Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 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