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1.
在对Myers和Majuf提出的优序融资理论(pecking order theory)进行修正的基础上,采用沪市部分上市公司的财务数据,对我国上市公司的内外融资顺序进行实证检验。结果表明:在我国,公司内部的现金流赤字并不能引起内部融资额的变化,也就是说,我国上市公司主要依赖的是外部融资,而非内源融资;而在外部融资中,上市公司更加倾向于股权融资,这与国内许多学者的研究结果相似。 相似文献
2.
新兴市场的企业集团为创新研究中分割的制度路径与组织路径提供了融合的基础。通过构建内部现金流和外部股权两种融资约束的测度方法,以集团属性为调节变量,控股股东支持为中介变量,研究了我国民营高科技上市公司金融危机前后的RD投资问题。研究发现,集团成员企业的RD投资对内部现金流敏感,而对外部股权融资不敏感;企业的集团属性不会显著改变两种融资约束对企业RD投资的负向影响,即集团属性的调节作用不明显;但考虑控股股东支持的中介作用后,企业的集团属性使内部现金流约束对企业RD投资的负向影响消失,即有中介的调节作用显著存在;而实证结果不支持中介作用与有调节的中介作用假设。 相似文献
3.
以2007～2017年我国上市公司为研究对象,利用2010年银监会(现银保监会)要求递延支付银行高管绩效薪酬政策这一事件窗口,通过构造双重差分模型检验了外部融资依赖与企业创新的相关关系。研究发现,相对于外部融资依赖程度较低的企业而言,外部融资依赖程度较高的企业在债务融资渠道受阻后,会更加依赖股权融资的方式为创新活动提供资金支持,从而提高了企业创新水平。在商业银行高管薪酬受到管制后,相比于国企,非国企的创新水平通过股权融资得到显著提高。此外,上市公司对创新能力较强公司的收购也是其提高自身创新水平的重要渠道。 相似文献
4.
现金流权、控制权与资本结构决策——来自我国民营上市公司的证据 总被引：2，自引：0，他引：2
对我国民营上市公司资本结构、现金流权、控制权及其分离程度的现状进行了描述。对现金流权、控制权及其分离程度对资本结构的影响进行了理论分析和实证检验。研究表明：终极控制股东现金流权、控制权与公司负债水平显著负相关;控制权与现金流权分离的公司,终极控制股东倾向于债务融资,扩大其可掌控的资源,以便进行攫取行为。两权分离程度越大,这种动机就越强。公司负债水平与两权分离程度总体上呈现一种倒U型关系。 相似文献
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融资活动已成为驱动中国制造业绿色技术创新的重要因素。而制造业究竟应选择“一视同仁”的融资安排,均衡拓展各个融资渠道,还是应“量体裁衣”,选择驱动效应最优的融资契约？本文利用包含非期望产出的Super-SBM模型对绿色技术创新绩效进行测量,重点探讨股权融资、债权融资与政府补贴对绿色技术创新的影响机理和作用边界。研究发现：（1）股权融资和政府补贴与绿色技术创新绩效存在积极关系,而债权融资表现出了消极影响。（2）创新投入在三类融资与绿色技术创新绩效关系均具有显著中介作用。（3）制造业面临的环境规制越强,股权融资和政府补贴对创新投入的促进效应更强,债权融资的抑制效应更弱,绿色技术创新绩效更高。因此,制造业应选择以股权融资为主、政府补贴为辅的融资契约安排,并根据环境规制情境权变调整债权融资配置,以实现对绿色技术创新的持续平滑。 相似文献
6.
《科学学研究》2017,(8)
债权融资与企业创新的关系始终存在理论冲突和实践争论。本文引入治理二元性理论和企业生命周期理论作为解释依据,在分析银行债权融资的关系治理和契约治理运作机理和创新风险分布规律的基础上,利用高科技上市公司面板数据,实证检验关系治理和契约治理对创新绩效的动态影响。研究表明:(1)创新活动为银行引致的环境风险主要分布在成长期和蜕变期,而道德风险主要分布在蜕变期;(2)债权契约治理的主要动因为风险规避,而创新溢价驱动下的关系治理更具创新包容特征,更有利于保证企业创新投入的连续性;(3)契约治理能够显著促进成长期企业的创新绩效,关系治理的促进作用主要集中在成熟期,但两种治理机制在企业蜕变期均表现出对创新绩效的显著抑制作用。 相似文献
7.
作为平滑企业技术创新的关键因素,融资契约对绿色技术创新的影响机理值得深入研究.本文基于企业生命周期理论,采用高科技制造业上市公司面板数据作为研究样本,在分析绿色技术创新特征的基础上,探讨并检验了股权融资、债权融资以及政府补贴在不同企业生命周期阶段中对绿色技术创新的动态影响.研究发现：融资契约对绿色技术创新具有差异化影响及动态性特征,即债权融资仅在成长期能够促进企业绿色技术创新;股权融资在企业成熟期和蜕变期均表现出与绿色技术创新的积极关系;政府补贴对蜕变期企业绿色技术创新具有促进作用,却在企业成熟期呈现出显著的抑制效应.进一步研究发现,政府补贴在债权融资、股权融资与绿色技术创新的关系中具有阶段性及契约异质性的信号传递作用,该作用仅对成长期债权融资与绿色技术创新的关系具有显著影响.因此,制造业企业应对融资契约实施最优动态配置,以实现对绿色技术创新的持续平滑. 相似文献
8.
以中国生物医药行业上市公司2010年—2012年数据为样本,实证检验发现,企业RD投资与企业自身现金流量显著正相关,与股权融资正相关,与债权融资负相关,但不显著。企业所在地市场环境差异对RD投资和融资约束具有显著影响。 相似文献
9.
信息经济学理论已被广泛应用于资本结构问题分析,学者们对融资约束下公司投资与现金流之间的关系研究取得了很多新的进展。在借鉴相关经典文献的基础上,笔者根据高、中、低三种不同融资约束程度对我国上市公司进行等级分类,运用2006—2010年度的相关数据进行实证检验。结果显示,在我国金融市场的特殊背景下,上市公司的投资与现金流敏感性呈非单调关系,隶属于高等融资约束组和低等融资约束组的公司,其投资-现金流敏感性低于中等融资约束组的公司。 相似文献
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11.
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
12.
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
13.
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
14.
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
15.
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
16.
《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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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
18.
《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
19.
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
20.
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