共查询到20条相似文献，搜索用时 93 毫秒
1.
2.
光伏产业是江苏战略性新兴产业之一,加快光伏产业发展是江苏调整产业结构、转变经济发展方式、走内生增长创新驱动道路的重要内容。江苏本文总结归纳了江苏2010年光伏产业发展总体情况和运行特点,分析目前江苏光伏产业发展存在的问题和瓶颈,研究提出扶持和引导光伏产业发展的模式和思路,为政府研究光伏产业发展战略和战略部署供依据和参考。 相似文献
3.
光伏产业链包括多晶硅原料生产、硅棒/硅锭生产、太阳能电池制造、组件封装、光伏产品生产和光伏发电系统等5个环节。目前光伏产业链呈金字塔形结构,从上游开始到下游,所涉及企业数量依次增加,市场竞争程度加剧。在光伏产业链"上小下大"的现状下,我国力争在光伏产业的上、中、下游都要抢占领先地位。文章的研究对象为江西省光伏产业,首先界定光伏产业链的内涵及特征,然后描述江西省光伏产业园现状、江西重点光伏企业现状,最后通过计算行业集中度指数、赫芬达尔-赫希曼指数等指标,评价江西光伏产业发展情况,以便为政府出台光伏产业发展政策、光伏企业制定战略提供基础依据。 相似文献
4.
5.
太阳能光伏产业的理论及发展路径 总被引：8，自引：0，他引：8
近几年来,中国太阳能光伏产业取得爆发式增长和重大技术突破,但是,由于目前仍缺乏领先技术和足够的经济竞争力,中国太阳能光伏产业面临着全球市场竞争加剧的压力和国内市场支撑不足的困扰.本文通过对太阳能光伏产业发展的特征、发展模式、发展条件及形成轨迹进行深入分析,并进一步揭示中国太阳能光伏产业存在的问题及应做出的理性选择. 相似文献
6.
为加快中国产业集聚发展方案的形成,以1999—2018年中国社会科学引文索引数据库收录的与产业集聚相关的1 341篇文献为研究对象,借助CiteSpace V软件对产业集聚相关研究的文献特征、演化轨迹及研究热点进行分析。研究发现:我国当前产业集聚领域研究核心内容主要集中在"外部性""污染效应与环境保护""要素禀赋""规模经济"等内容;值得进一步挖掘的研究热点有"产业集聚外部性的新特征与识别方法""生态环境与产业集聚的耦合发展路径""资源禀赋、资源引力与产业集聚的动态关联性""产业集聚、产业转移、集聚崩解的系统整体性"。 相似文献
7.
8.
<正>"十一五"期间,青海科技积极支持以太阳能为代表的新能源经济,为新能源产业迅速发展提供了支撑。一、重大科技攻关软课题研究取得进展完成了科技攻关项目《青海省GW级太阳能光伏系统应用及产业发展规划研究》,课题组结合我省能源、电力、工业、经济、光伏产业发展现状和无电人口分布等情况,对太阳能光伏系统应用和产业发展规 相似文献
9.
10.
《科学学与科学技术管理》2017,(4)
采用346家中国太阳能光伏企业在全球的463笔投资数据,分析了该产业的海外投资布局特征,并从国家(区域)、产业和企业3个层面研究母国区域和东道国,以及企业特征和东道国之间的投资匹配关系。江苏、浙江等制度环境优越的省份是太阳能光伏企业走出去的主要来源区域,德国、美国等制度环境完善的国家则是重要的投资目的地国;进行海外投资的太阳能光伏企业大多是未上市的非国有企业,投资动机以市场寻求型为主。在国家(区域)和产业层面,基于制度环境和产业基础2个维度,"母国—东道国"的投资配对呈现出对偶性,即来自制度和产业基础良好省份的企业倾向于投资制度和产业基础良好的国家;制度和产业基础不完善的东道国会吸引来自制度和产业基础不完善区域的企业的投资。在企业层面,不同所有制、上市与否以及具有不同投资动机的企业对东道国的选择偏好存在差异,呈现"非国有企业—制度、产业双领先国家"、"市场寻求型投资—制度、产业双领先国家"和"研发寻求型投资—制度领先国家"的投资配对。 相似文献
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.
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
14.
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
15.
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
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
17.
《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
18.
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
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