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公司创业投资的共生演化与培育机制研究 《科学学研究》2022,40(4):684-694
在创新创业生态系统中,公司创业投资（CVC）是一种促进大企业开放式创新和创业企业快速成长的有效机制。CVC活动在我国的20多年实践证明：其促进了大企业与创业企业的共同发展,并使二者形成共生关系,通过共生介质和共生界面优化实现双方互利共生。在创新生态系统视阈下,大企业种群与创业企业种群可通过演化博弈形成稳定的共生关系,有利于提高双方的适应性并拓宽生态位,进而协同共生进行价值创造。因此,基于对公司创业投资（CVC）生态群落生态位的描述,引入Lotka-Volterra模型,利用算例仿真预测大企业和创业企业的创新生态位演化趋势,从共生、学习、创新、激励角度提出公司创业投资生态群落的共生培育机制,为我国公司创业投资生态群落中企业创新生态位的策略优化与选择提供理论支持。 相似文献
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本研究基于生态位理论构建了区域创新生态系统生态位适宜度评价指标体系和评价模型,并对中国30个省市2009-2018共十年的区域创新生态系统进行评价。研究结果表明：⑴ 中国整体的创新生态位适宜度较低,但进化空间较大,发展趋势较好;⑵ 中国的创新引领地区和创新领先地区共涵盖20%的省市,其余为创新落后地区,创新生态系统发展呈现区域不均衡;⑶ 在区域分布方面,创新生态位适宜度呈现从东部到西部递减趋势。此外,采用GM（1,1）模型预测系统对2020-2024五年的生态位适宜度进行预测,研究结果表明：⑴ 2020-2024年,中国整体的创新生态位适宜度将有所提升;⑵ 在权重方面,2020-2024年,生境生态位将继续占据区域创新生态系统最重要的位置。 相似文献
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本文源于企业文化建设实效性、情景性的现实需求,基于生态位“态”“势”理论, 借鉴DenisonOCQ企业文化测度模型的相关指标与其他本土研究成果,建立包括“态”（企业文化特征）、“势”（企业文化价值）两个子系统的企业文化生态位系统,将企业文化测度模型由强调内在禀赋的考量拓展到对经营绩效作用强度的评价。首先,运用SSIP过程聚焦已有研究成果及企业需求确定企业文化生态位测度系统的初始指标,继而使用因子分析方法对初始指标进行修正归纳,开发出新量表,进一步提升企业文化测度指标的适用性和准确性。其次,据此建立企业文化测度生态位系统基模,运用VensimPLE软件进行仿真模拟,分析企业文化生态位系统基模各构成因子、子系统间的正反馈关系,验证其系统性、动态性及有效性。 相似文献
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城市人居环境质量定量评价的生态位适宜度模型及其应用 总被引：8，自引：0，他引：8
将生态位适宜度理论引入到城市人居环境质量定量评价中,并据此构建城市人居环境质量定量评价的生态位适宜度模型。利用该模型选取24项反映现实生态位与最佳生态位之间耦合度的单项指标,构成经济生态位、社会生态位、环境生态位三大类独立的评价指标,用以评价城市人居环境质量。同时,以浙江省9个地级城市为例,运用所建模型对这些地级市的城市人居环境质量进行了评价,结果显示,2004年城市人居环境质量杭州最高,温州最低,其中经济生态位对我省城市间人居环境质量差异的影响最大。本研究表明,生态位适宜度模型对于多指标的城市人居环境质量定量评价,不但可以定量地研究各个区域城市人居环境质量的生态位适宜度,还能简明直观地揭示引起人居环境质量的生态位适宜度区域差异的主导因素和空间分异规律,从而为决策管理部门制定城市规划方案提供理论依据。 相似文献
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本研究基于种群生态学探究创新生态系统种群丰富度影响创新生态效应内在机制和边界条件。基于315家电子信息企业数据,通过采用多元回归和Bootstrap法,得出以下结论：种群丰富度对创新生态效应具有正向影响,创新生态环境在其中发挥调节效应;价值共创模式和过程在种群丰富度与创新生态效应关系间发挥中介作用;创新生态机制正向调节价值共创模式和过程在种群丰富度和创新生态效应间的中介效应;创新生态位正向调节价值共创过程在种群丰富度和创新生态效应间的中介效应及价值共创模式在种群丰富度与同化效应间的中介效应。研究结果从价值共创视角构建了种群丰富度对创新生态效应转化内在机制,为企业构建多种群合作提供理论指导。 相似文献
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为评估浙江省科技创新创业政策效果,采用AHP分析法,建立科技创新创业政策实施效果评价指标模型,从科技创新创业政策特性、效应、主题、创业态度、创业活动指数、创业抱负和创业幸福感等7个方面、25个指标评价科技创新创业政策效果,最后从强化科技创新培育政策的顶层设计、实施区域均衡的科技创新培育政策、科学优化科技创业企业扶持政策投入比例等方面提出优化浙江科技创新创业政策体系。 相似文献
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为评估浙江省科技创新创业政策效果,采用AHP分析法,建立科技创新创业政策实施效果评价指标模型,从科技创新创业政策特性、效应、主题、创业态度、创业活动指数、创业抱负和创业幸福感7个方面25个指标评价科技创新创业政策效果,最后从强化科技创新培育政策的顶层设计、实施区域均衡的科技创新培育政策、科学优化科技创业企业扶持政策投入比例等方面提出优化浙江省科技创新创业政策体系。 相似文献
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基于对以科技企业孵化器为核心的创业生态系统分析,探索科技企业孵化器生态位的内涵,从经济、人才技术和社会资源3个维度构建科技企业孵化器生态位评价指标体系,对我国30个省份科技企业孵化器发展水平进行实证分析.结果 表明:各省份科技企业孵化器综合生态位排名的空间分布格局与其经济水平的空间分布格局基本一致,均为由东部沿海、中部至西部依次降低;各省份科技企业孵化器由于发展的资源基础和起步时间不同,态值差异远大于势值差异,在经济维度的差异更为显著;根据不同生态因子,我国科技企业孵化器可划分为5类且各具特征.最后对我国科技企业孵化器未来发展提出建议:持续推动创业孵化生态不断优化,充分发掘利用本地资源禀赋,抓重点、差异化全面提高孵化器发展水平,以及在融合共生中共同发展等. 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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《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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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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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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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