共查询到20条相似文献，搜索用时 687 毫秒
1.
目前我国理论界和企业界对企业核心竞争力非常关注。为了论证行业间核心竞争力存在着明显的异质化现象,选定房地产行业、金融行业、钢铁行业和汽车行业,就其核心竞争力采用对比分析方法进行研究。认为行业间的核心竞争力异质化明显,并就行业核心竞争力的提升提出有益的对策建议。 相似文献
2.
本文在对中国钢铁行业及企业所存在的问题分析的基础上,对中国钢铁行业及企业的技术进步的现状与未来发展战略进行了深入的探讨;在大量调查的基础上对国内外的钢铁行业及企业的技术问题进行了比较分析,为中国钢铁行业及企业的技术发展提供了参考. 相似文献
3.
4.
本文主要分析在中国人口众多资源有限的国情下,高速铁路发展的必要性和必然性,以及高速铁路的技术优势、资源优势和经济优势。 相似文献
5.
中国汽车行业市场集中度对吸引外资的实证分析 总被引：1，自引：0，他引：1
中国的市场结构对吸引外资起到一定作用,从实践上看,一些重要的行业,如汽车行业、电信业的不同市场结构在很大程度上影响着吸引外资的数量和质量.因此,以实证的方法研究了中国汽车行业市场集中度对吸引外资的影响. 相似文献
6.
中国的市场结构对吸引外资起到一定作用，从实践上看，一些重要的行业，如汽车行业、电信业的不同市场结构在很大程度上影响着吸引外资的数量和质量。因此，以实证的方法研究了中国汽车行业市场集中度对吸引外资的影响。 相似文献
7.
笔者通过对现代汽车行业电阻焊焊接设备进行分析,对提高试制车间焊接设备性能的特性有了一定的感性认识和理解,此文阐述了提高汽车行业焊接设备性能的必要性、工频中频焊接设备性能差异比较、中频自适应技术原理和中频自适应技术在行业内部的应用,仅供同行参考借鉴。 相似文献
8.
分析了金融危机对全球及整个钢铁行业总体影响及原因,以我国钢铁行业的40家上市公司为样本,对钢铁行业2008年上半年和下半年的相关数据进行了详细的计算、比较和分析,讨论了面对危机影响、不同规模的企业进行策略选择时的影响因素和矛盾分歧。最后引进智猪博弈模型,分析了大型企业和中小企业面对金融危机的最优策略。 相似文献
9.
【目的】为推动钢铁行业尽快纳入碳排放交易市场，已有研究主要从成本影响角度分配钢铁企业碳配额。然而，钢铁行业碳排放量大、生产工艺复杂，过度强调成本影响易降低减排效益，不利于推动钢铁企业低碳转型。本文基于碳减排效率与产出效率，旨在设计符合中国钢铁行业发展现状的碳配额分配方案。【方法】梳理不同流程钢铁生产工序，将碳配额作为各工序连续生产的必要原料，重新得到钢铁生产流程；叠加碳配额，构建投入-产出随机前沿模型，得到钢铁行业生产效率与碳配额效率估计公式；对比不同碳配额基准值对钢铁生产工序产出率的影响，以提高效率为标准，确定中国钢铁业跨区域碳配额基准线。【结果】相较于历史排放法，基准线法更适于中国钢铁行业碳配额分配。碳配额基准线设定在行业前[30%, 50%]区间有助于提升钢铁行业总体产出率，且当碳配额基准线设定在行业前40%时的产出率水平最高。当碳配额基准线设定大于钢铁行业前50%企业碳排放值时，行业产出率随着碳排放基准线设定的增加而降低。以基准线法推进钢铁行业纳入碳排放交易市场，中国钢铁行业将在节约碳关税的同时，获得碳排放交易收益。【结论】基于产出效率分配碳配额有助于提升钢铁行业减排效益，激发... 相似文献
10.
国际铁矿石价格一路上涨,2010年的铁矿石价格谈判中三大矿商的涨价要求达到惊人地步,要求涨幅超过100%,给钢铁行业带来了沉重的成本压力。本文分析了世界及中国钢铁行业产业集中度,指出与矿石采选行业相比其产业集中度过低;并从垄断理论出发,找出矿价上涨的主要原因,提出加快提升中国钢铁行业集中度的建议。 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.
《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
13.
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
14.
《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
15.
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
16.
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
17.
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
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