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1.
本文根据马克思再生产理论，建立了一个新的测算企业技术进步经济效益的模型，该模型思路清晰，计算简单。使用该模型不仅可以测算企业技术进步对总产出的贡献，也可以测算企业各生产要素对总产出的贡献。 相似文献
2.
成本法在软件价值评估中的运用--以COCOMO模型为例 总被引：1，自引：0，他引：1
以COCOMO模型为例，首先扼要介绍软件价值评估中成本法中三种主要的开发成本测算方法，然后介绍COCOMO模型及其最新研究进展，最后得出以COCOMO模型评估测算软件价值的总公式。 相似文献
3.
在新冠肺炎疫情暴发等事件的冲击下,全球市场对于可持续发展理念的认同度大幅提升。"一带一路"沿线国家和地区(以下简称"沿线国家")面临着共同的生态环境和气候变化的严峻挑战。文章基于双向固定效应面板模型和区域间投入产出模型,提出了中国对外直接投资对沿线国家碳排放影响的测算模型。测算结果显示中国对沿线国家绿色发展发挥了积极减排效应,助推了沿线国家绿色投资,并基于测算结果和中国对外直接投资现状提出了4条政策建议:在重点行业开展低碳技术转型;建立连贯的绿色发展政策;建立多边绿色合作;重点发展气候金融。 相似文献
4.
本文从总供给的角度出发,运用索洛增长模型,利用广东省统计年鉴的数据,测算了外商直接投资对广东经济增长的贡献程度。研究结果表明,外商直接投资对广东经济增长的贡献巨大。 相似文献
5.
基于用户角度的网站易用性信息距离测度模型研究 总被引：8，自引：0，他引：8
在当前网站易用性研究成果基础上,分析网站易用性定量测度中存在的问题;针对网站易用性直接定量测度难题,阐述信息距离基本理论及测度方法,以此为基础首次建立直接定量测度模型,即网站易用性信息距离测度模型;最后对两个应用实例进行测算。本文为网站易用性直接定量测度研究提供全新的思路与方法。 相似文献
6.
中小企业作为区域经济增长中不可忽视的力量，已越来越受到人们的重视。在回顾索洛（Solow）模型的基础上，结合我国工业企业实际情况，提出了GRD经济贡献度测算模型，并将其应用于中部六省中小企业区域经济贡献度的测算中，同时运用时间序列分析法检验了模型的有效性与实用性。 相似文献
7.
8.
二次相对评价法在企业技术创新能力中的应用 总被引：1，自引：1，他引：1
给出了测算企业技术创新能力的二次相对评价法，首先利用层次分析法(AHP)测算综合指数状态，再用数据包络分析(DEA)方法中的BCC模型测算二次相对评价值；该方法消除了客观基础条件优劣的影响，从而可真正反映人的有效主观努力在增强企业技术创新能力中所起的作用。 相似文献
9.
二次相对评价法在企业技术创新能力中的应用 总被引：6，自引：0，他引：6
给出了测算企业技术创新能力的二次相对评价法，首先利用层次分析(AHP)测算综合指数状态，再用数据包络分析(DEA)方法中的BCC模型测算二次相对评价值；该方法消除了客观基础条件优劣的影响，从而可真正反映人的有效主观努力在增强企业技术创新能力中所起的作用。 相似文献
10.
在借鉴以往节事经济影响研究实践和成果的基础上,构建测算基于SNA的奥运会产业关联效应测算模型,并通过模型设计的条件、测算体系的形成以及新旧投入产出模型流量的关系等对其进行理论论证,指出该模型具有可行性,可用于进行节事活动对各产业的产业关联效应测算及对国民经济的影响分析。 相似文献
11.
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
12.
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
13.
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
14.
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
15.
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
16.
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
17.
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
18.
《中国科学院院刊(英文版)》2014,(3)
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence 相似文献
19.
Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels 总被引：1，自引：0，他引：1
《中国科学院院刊(英文版)》2014,(3):267-268
<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese 相似文献
20.
WANG Sijia 《中国科学院院刊(英文版)》2014,(2):192-194
<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages. 相似文献