首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1465篇
  免费   20篇
  国内免费   9篇
财政金融   69篇
工业经济   60篇
计划管理   134篇
经济学   879篇
综合类   58篇
运输经济   3篇
旅游经济   5篇
贸易经济   134篇
农业经济   28篇
经济概况   124篇
  2024年   3篇
  2023年   18篇
  2022年   67篇
  2021年   69篇
  2020年   96篇
  2019年   75篇
  2018年   68篇
  2017年   55篇
  2016年   54篇
  2015年   46篇
  2014年   61篇
  2013年   70篇
  2012年   81篇
  2011年   121篇
  2010年   80篇
  2009年   98篇
  2008年   74篇
  2007年   71篇
  2006年   55篇
  2005年   55篇
  2004年   29篇
  2003年   26篇
  2002年   24篇
  2001年   18篇
  2000年   11篇
  1999年   11篇
  1998年   8篇
  1997年   11篇
  1996年   5篇
  1995年   5篇
  1994年   6篇
  1993年   2篇
  1992年   3篇
  1990年   1篇
  1985年   2篇
  1984年   12篇
  1983年   1篇
  1982年   1篇
  1978年   1篇
排序方式: 共有1494条查询结果,搜索用时 46 毫秒
51.
近些年来,我国汽车工业飞速发展,自主品牌汽车在海湾国家已占据了一定的市场份额。为此,本文通过对目前海湾合作委员会汽车认证新制度的介绍,分析海湾汽车市场与技术壁垒,以及GCC认证制度的变化情况,为国内汽车企业进一步了解特殊市场产品的品质要求,及顺利通过申请GCC认证提供建议。  相似文献   
52.
Emerging technological fields are affected by developments in their broader context. This article proposes a differentiation of context structures as a crucial step in the analysis of technological innovation systems. A thorough context analysis, so the argument, is essential for understanding the pace and direction of technology development and the prospects of an emerging technological innovation system. Empirical insights are provided for Bio-SNG, a technology in an early stage of development. The article discusses the conditions under which actors from different sectors (forestry, wood industry, and energy supply) may play a role in the emerging field. It is shown that Bio-SNG is likely to become a victim of the recent boom in wood-to-energy technologies that has favored investments in more mature but technologically inferior alternatives. The case provides lessons for policy making as it highlights how effective support schemes might foster a lock-in into technologies that are readily available.  相似文献   
53.
Technology evaluation, as an organizational process, is the essential ability to comprehend the values of technologies very soon after they emerge. Meanwhile, the technology evaluation process is inevitably influenced by the firm's industrial context, such as its technological trajectory. This study defines technology evaluation strategy in terms of the processes, methods, and participants involved, and uses this definition as a taxonomy to explore different types of technology evaluation strategies. A survey on the technological industries is conducted to explore types of technology evaluation strategies and their relationships with the advantages of different types of innovation under the effects of different technological trajectories. The survey identifies four types of technology evaluation strategies, namely, those of the flexible executive strategist, the emergent executive intuitionist, the deliberate quantitative strategist, and the deliberate consensual strategist, are identified. This study has found that certain types of technology evaluation strategies have better innovation performances than the others. The patterns of technological trajectories are also found to influence a firm's technology evaluation strategy and the advantages of certain types of innovations. The established explanations of the relationships among the technological trajectory, innovation type, and technology evaluation strategies may guide technology businesses to develop a better technology evaluation capability. The theoretical framework developed in this research enriches the strategic management literature with a new taxonomy for technology evaluation strategies.  相似文献   
54.
Moore's Law has created a popular perception of exponential progress in information technology. But is the progress of IT really exponential? In this paper we examine long time series of data documenting progress in information technology gathered by [1]. We analyze six different historical trends of progress for several technologies grouped into the following three functional tasks: information storage, information transportation (bandwidth), and information transformation (speed of computation). Five of the six datasets extend back to the nineteenth century. We perform statistical analyses and show that in all six cases one can reject the exponential hypothesis at statistically significant levels. In contrast, one cannot reject the hypothesis of superexponential growth with decreasing doubling times. This raises questions about whether past trends in the improvement of information technology are sustainable.  相似文献   
55.
The objective of this research work is to study the progress of research on technological uncertainties, social uncertainties and emerging markets and outline and identify the key disciplines, journals, articles and authors. For this the author studied the existing literature from the various fields in which technological uncertainties, social uncertainties and emerging markets research work have been published using ISI Web of Knowledge database. The paper finds that there is increasing research work on technological uncertainties, social uncertainties and emerging markets and the bibliographical search resulted in ninety-one documents written by one-hundred-sixty-one authors in eighty-four journals in seventy-two disciplines. The five major disciplines and their underlying journals are business and economics, agriculture, psychology, public administration, and environmental sciences and ecology accounting for majority of publications. In journals the most prolific, measured by number of articles published are Harvard Business Review, Social Science and Medicine, World Development, and Higher Education; and most influential, measured by the global citation received, are Harvard Business Review, Social Science and Medicine and Sociological Review. The top 10% of the journals are responsible for 23% of all publications but 85% of all global citations received. This highlights that despite the high, diverse and increasing number of journals; only few are dominating and shaping the research arena of technological uncertainties, social uncertainties and emerging markets. Further, in the ten most cited articles, no author appears more than once.  相似文献   
56.
This study uses employment data to examine why some industries host more new high-growth firms than others. Using a unique data base of 201 industries over a 15-year period, we find that increases in the proportion of employment of scientists and engineers in industries are positively associated with counts of fast-growing new firms; however, we do not detect a relationship between fluctuations in the proportion of employment in sales and production occupations and counts of fast-growing new firms. The findings suggest that technological innovation is an important determinant of entrepreneurial opportunity. Further, they suggest that private new firms are an important means of organizing commercial innovation and that new firms may be less constrained by complementary assets than has been previously understood.  相似文献   
57.
基于2006—2020年中国内地31个省域面板数据,从影响传导机制、非线性特质角度探究技术进步偏向对经济韧性的影响效应。结果发现:(1)技术进步偏向对经济韧性具有显著正向影响,这一结论在稳健性与内生性检验中依然成立;(2)就作用机制而言,创新要素配置是影响技术进步偏向作用于经济韧性的重要机制;(3)门槛模型检验结果显示,技术进步偏向指数及其子维度与经济调整适应能力不存在非线性作用关系,但与经济创新转型能力具有非线性关系。因此,要合理引导技术发展方向,发挥技术进步偏向的积极作用;充分发挥“有效市场”和“有为政府”的合力作用,优化创新要素配置;以技术创新、理念革新与机制鼎新抵御潜在风险,增强经济韧性。  相似文献   
58.
碳交易是推动制造业绿色发展,实现“双碳”目标的重要市场化工具,交易价格和市场规模能够反映碳交易实施状况,是影响制造业绿色全要素生产率的重要因素。从碳交易价格和市场规模切入,基于2008—2020年中国内地30个省份面板数据,构建连续型双重差分模型评估碳交易对制造业绿色全要素生产率的作用效果,并考察异质性技术创新模式的传导路径。结果表明,提高碳交易价格和扩大市场规模均能显著提升制造业绿色全要素生产率。机制检验表明,碳交易价格和市场规模能够推动自主创新、减少技术改造投入,进而影响制造业绿色全要素生产率,而技术引进并非有效路径。进一步研究发现,自主创新对技术改造存在挤出效应。研究结论对完善碳交易制度顶层设计、精准制定技术创新配套政策具有重要启示意义。  相似文献   
59.
刘琪 《中国电子商务》2014,(8):81-82,84
本文将人力资本分为国外人力资本和国内人力资本,以中国为例,采用9个OECD国家的1980-2011年共210个观测值作对比,用定量分析方法探究不同人力资本对FDI技术溢出效应的影响,并得出结论:国内人力资本与国外人力资本皆对FDI技术吸收能力产生积极效应,且综合指标比分别的单独指标对FDI技术溢出效应产生更大的影响,海归型人才与非海归型人才相比对FDI技术溢出效应影响更大。  相似文献   
60.
面对人才计划是激励了科技人才,还是诱发了科技人才急功近利、心浮气躁的争议,本文系统梳理了人才计划选育人才特点和实践过程中存在的功能异化问题,构建了包含成就动机的科技人才激励理论模型分析框架,并使用全国科技工作者调查数据和倾向得分匹配方法,实证检验人才计划激励高层次科技人才成就动机的净效应。结果表明:(1)人才计划的特点是强调以人为本,旨在培养和提高科技人才的创新研究能力,鼓励人才自由探索和根本创新,但实施过程中存在政策工具的过度使用、薪酬待遇和资源的过度倾斜等问题;(2)适度科研经费支持有助于强化科技人才的成就动机,而过度强调绩效激励则可能产生挤出效应;(3)入选人才计划对高层次科技人才成就动机的激发作用是显著的,在继续推进人才计划支持方式的同时应正视弊端、系统谋划。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号