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构建了适用于企业清洁化改革决策及资本成本评估的绿色投资均衡模型,并借助数值模拟检验分析企业清洁化改革的绿色投资敏感性.结果发现:改革企业份额的绿色投资敏感性显著为正,改革成本增强了企业清洁化改革的绿色投资敏感性;污染技术企业进入清洁化改革之前,综合资本成本与绿色投资者之间存在显著的正相关关系,污染技术企业进入清洁化改革之后,综合资本成本与绿色投资者之间存在显著的负相关关系. 相似文献
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风险投资于20世纪40年代起源于美国,是一种向极具发展潜力的创新企业或中小企业提供股权资本的投资行为.其基本特征是:投资周期长达3至7年,投资者向投资对象注资并提供企业管理方面的帮助,投资者在投资活动结束时的股权转让中获取高额的投资回报.目前,风险投资己遍及所有先进国家,新兴工业国和部分发展中国家,极大地推动了全球高科技事业的发展,加速了高新技术的产业化进程.我国实施"科教兴国"战略,政府重视发展"高科技产业"并将随投融资体制的改革,加快建立风险投资体系. 相似文献
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本文运用Fama和Freneh（1999）的内部报酬率方法,计算了沪深两市1990--2007年间A股重污染行业上市公司的价值内部报酬率（资本成本）和成本内部报酬率（投资报酬率）,分析了上市公司成长速度和资本结构特征。实证结果显示：中国上市公司中重污染行业的投资收益率为4．36％,低于7．34％的上市公司整体行业投资回报率。沪深A股的上市公司中重污染行业并不是高效率的行业。现实中却能够得到发展和扩张所需的资本,而不是按照市场原则被淘汰。这一现象与资本市场中社会资本流向所反映的投资预期并不相符。重污染行业的资本杠杆率普遍高于整体行业59．73％的资本杠杆率,表明其运营的资本来源对短期借款和长期借款的依赖程度要高于整体行业,股权资本的比例普遍低于整体行业。从重污染行业投资收益率看,总体上还是增值的;在成本内部报酬率（投资报酬率）水平相近的情况下,重污染行业的价值内部报酬率（资本成本）高于整体行业大约4％,这表明重污染行业债权融资（尤其是短期融资）的高成本现象。本文认为造成社会资本流向低效率行业的根源在于我国经济转型过程中企业和银行的外部性所造成的软预算约束。低效率行业并没有遵循市场优胜劣汰的规则退出市场竞争在于市场体系中不发达的要素市场和高退出壁垒增强了资产的专用性,这也是上市公司中重污染行业侧重于债权融资的主要原因。 相似文献
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为了检验企业社会责任、技术创新投入这2项投资活动对企业融资情况的影响。本研究以2014年我国创业板上市企业的数据为研究样本,并采用多元线性回归的最小二乘法对模型进行估计。探讨了企业社会责任、技术创新投入与资本结构之间的关系,并考察了企业社会责任和技术创新投入对资本结构的协同影响效应。通过实证研究发现:企业社会责任水平与资本结构负相关,技术创新投入也与资本结构负相关,且技术创新投入和社会责任交互影响企业资本结构,彼此调节增强对资本结构的影响。本研究丰富了已有的相关研究,以期能为我国创业板企业承担社会责任、积极创新、选择合适的资本结构提供一些启示。 相似文献
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本文基于节能减排的环境责任,以1998-2010年重污染行业A股上市公司为样本检验了企业和银行节能减排的环境责任对企业的银行长期借款融资的影响。研究发现：固定资产与营运资本是重污染行业企业获得长期借款的重要指标,节能减排的环境责任与企业获得的银行长期借款显著相关,说明＂绿色信贷＂政策对重污染企业节能减排责任行为产生了积极的作用,也引起了企业财务杠杆选择的策略行为。 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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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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《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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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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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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Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献