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为促进北京市碳纤维产业快速发展,构建产业发展新模式,从专利视角,利用全球碳纤维产业数据,调研国内碳纤维产业链典型企业,分析碳纤维产业发展现状及我国存在的主要问题,研究北京市碳纤维产业转型升级的全产业链发展模式。研究结果表明,国际上碳纤维产业已长期被日本和欧美所垄断,我国的技术和产品与国外仍然存在代差,但在碳纤维领域我国已初步构建出产学研用合作发展模式。目前,北京市在碳纤维领域研发端的实力强劲,并涌现出一批在航空航天领域的碳纤维高端制造企业对北京市碳纤维产业发展起到牵引、推动作用,具备整合国内碳纤维领域优质资源的基础条件。根据研究结果,结合北京市的资源和技术优势,提出构建以高端需求为牵引的北京市碳纤维产业的全产业链发展模式对策建议。 相似文献
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在中国高端产业集聚区成功案例的基础上,结合Stackelberg垄断竞争模型与Hotelling竞争区位选址模型构建数理分析框架,论证先进制造业与高级生产者服务业市场力量的不均等所形成以优势企业为核心构建产业集聚的必然性。数理论证发现,高端制造业/先进生产者服务业产业特征与集聚过程中企业分布特征与发展趋势,凸显出在我国高端产业发展过程中以发展高端产业"龙头企业"战略来推动高端产业发展与构建国内价值链的重要性。最后提出发展高端产业集聚和合理引进外资来攀升全球价值链地位的政策建议。 相似文献
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推动高技术产业高质量发展是加快形成新质生产力的基础和保障。当前,我国高技术产业在国际新形势下发展后劲不强,产业增速同比趋缓。链长制作为高技术产业链主要管理制度,在促进周边产业链协同、成果转化和市场激励等方面存在明显不足。我国亟须构建链长制高端迈进指标体系、分层协同管理机制和协同决策评价机制,进一步提升产业链跨区投融资能力和供应链抗风险能力,以拓展国内跨区合作空间,提升国际价值链地位。 相似文献
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矿业城市是随着矿产资源的开发而形成和发展起来的,矿业城市为我国经济发展提供大量物质保障的同时,其自身的资源、环境及发展问题也更加突出,由此也成为推广和实施循环经济的重点区域和部门。论文以河北省唐山市为对象,分析了该城市资源产业的构成特征及产业发展过程中的资源、环境问题,构建了城市资源产业集群循环经济的总体框架和系统结构流图,并对该系统的不同实施方案进行了仿真优化。研究认为:①矿业城市基于资源开发利用的产业构成,具有明显的沿资源产业链不断演进和提升、形成以资源产业链为主体产业集群的发展规律和特征;②资源产业集群内部在物质流、能量流等方面较强的关联性和依赖性,为矿业城市工业循环经济的规划和实施奠定了坚实的基础;③唐山市资源产业集群的现有发展模式、"十一五"规划模式和循环经济模式均有一定的成效,但循环经济模式运行效果最佳;④唐山市应紧密结合资源产业集群的发展演变特征,全面规划和实施循环经济发展模式,实现城市资源产业的可持续发展。 相似文献
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对比汽车工业、高速铁路和民用飞机发展,可以看出当前必须坚持自主创新的基础性地位,坚持自主品牌、系统集成与国际合作相结合的模式,坚持全产业链自主创新,才能整体拉动产业链发展。因此,提升高端制造业自主创新能力,必须对重点产业进行整体规划,按照“自主品牌引领、系统集成创新、充分国际合作”的路线,打造国际一流产品,逐步提高重点产业的国产化率,进而实现产业的转型和升级。 相似文献
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《中国科技论坛》2021,(8)
聚焦于产业技术创新过程中创新范式选择与创新资源优化配置问题,在构建产业技术创新效率评价体系的基础上,以中国高端装备制造业为例从行业与国家二维视角进行实证研究,以揭示产业技术创新范式选择规律,进而基于效率视角提出产业创新资源的优化配置策略。研究发现:不同国家高端装备制造业自主技术创新效率与技术引进效率间的关系存在较大异质性;中国高端装备制造业的技术引进效率全球领先,自主技术创新效率则处于全球中上游水平;中国高端装备制造业细分行业的技术创新效率存在较大离散性,适度控制其技术创新资源的投入规模并调整其投入结构,可有效提升其技术创新效率;在技术创新资源约束条件下,以效率为导向的技术创新范式选择应是先从技术引进开始,在实现技术创新规模效应、不断提升技术创新管理水平的基础上再进行自主技术创新,进而实现综合技术创新;产业应遵循特定比例关系进行技术创新资源的优化配置,以提高技术创新资源的优化配置效率。 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