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   8641篇
  免费   142篇
财政金融   1833篇
工业经济   638篇
计划管理   1366篇
经济学   1827篇
综合类   113篇
运输经济   53篇
旅游经济   164篇
贸易经济   1331篇
农业经济   307篇
经济概况   1145篇
邮电经济   6篇
  2020年   79篇
  2019年   121篇
  2018年   148篇
  2017年   160篇
  2016年   144篇
  2015年   105篇
  2014年   145篇
  2013年   966篇
  2012年   221篇
  2011年   248篇
  2010年   218篇
  2009年   233篇
  2008年   224篇
  2007年   173篇
  2006年   189篇
  2005年   165篇
  2004年   170篇
  2003年   165篇
  2002年   174篇
  2001年   161篇
  2000年   159篇
  1999年   152篇
  1998年   166篇
  1997年   160篇
  1996年   148篇
  1995年   119篇
  1994年   124篇
  1993年   139篇
  1992年   157篇
  1991年   159篇
  1990年   113篇
  1989年   114篇
  1988年   96篇
  1987年   111篇
  1986年   120篇
  1985年   157篇
  1984年   134篇
  1983年   163篇
  1982年   135篇
  1981年   123篇
  1980年   140篇
  1979年   125篇
  1978年   94篇
  1977年   108篇
  1976年   101篇
  1975年   100篇
  1974年   91篇
  1973年   73篇
  1972年   62篇
  1971年   61篇
排序方式: 共有8783条查询结果,搜索用时 31 毫秒
51.
The transfer of environmental goods and services to China will increasingly be of importance to developed nations as the demand for environmental management services increases in China. A review of the literature on technology transfer to China revealed a range of well recognized and commonly known constraints to transferring technologies to China. There were gaps in the literature in relation to the concerns that environmental professionals have regarding technology transfer to China, as there is limited information on the transfer in environmental goods and services to China. A survey of the non‐trade barriers and their practical impact on the transfer of environmental technologies and goods and services to China, focusing on Australian suppliers, was undertaken to address these gaps. The survey, which was developed from barriers to technology transfer already described in the extensive research addressing the wider issues of technology transfer to China, targeted environmental professionals but also included other professionals with interests in transferring environmental goods and services to China. From the survey, the highest priority barriers to transferring environmental goods and service to China were identified, and those that are most likely to limit Australian vendors of environmental goods and services in their technology transfers to China were protection of intellectual property (IP), limitations of the rule of law, fragmentation and bureaucracy of the Chinese government and establishing appropriate level of ownership (of environmental goods and services providers in China). Examples of Australian experience were also examined, which confirmed these barriers to providing the needed technology and innovation to manage China's increasing environmental impacts. The research also shows that the barriers identified do not appear to be unique to transfer of environmental goods and services but rather generic to the transfer and adoption of Australian technology into China. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.  相似文献   
52.
This paper documents an investigation of drum-buffer-rope (DBR) scheduling and flow control methodology in single-product serial production lines. In particular, DBR flow control is reviewed and the importance of correctly representing this type of flow control mechanism in serial lines is discussed. Departures from valid DBR conceptual and simulation modeling are illustrated. It is shown that the model of a previously published paper is a push system not a DBR system, and that related conclusions regarding protective capacity and constraint location are unsupported. Correct modeling of DBR flow control is shown using discrete simulation experiments that compare the DBR model and a similar push model. Suggestions for additional research are offered.  相似文献   
53.
This paper analyses the presence of financial constraint in the investment decisions of 367 Brazilian firms from 1997 to 2004, using a Bayesian econometric model with group-varying parameters. The motivation for this paper is the use of clustering techniques to group firms in a totally endogenous form. In order to classify the firms we used a hybrid clustering method, that is, hierarchical and non-hierarchical clustering techniques jointly. To estimate the parameters a Bayesian approach was considered. Prior distributions were assumed for the parameters, classifying the model in random or fixed effects. Ordinate predictive density criterion was used to select the model providing a better prediction. We tested thirty models and the better prediction considers the presence of 2 groups in the sample, assuming the fixed effect model with a Student t distribution with 20 degrees of freedom for the error. The results indicate robustness in the identification of financial constraint when the firms are classified by the clustering techniques.  相似文献   
54.
Trust is frequently a requirement for economic exchanges and the management of natural resources. Providing public information on past actions can promote trust through the formation of reputations. We developed an economic experiment to test whether a formal reputation mechanism could facilitate trusting relationships in the tradable grazing rights markets. Providing information to create formal public reputations for market participants did not increase the overall efficiency of the market. However, it did result in greater equality of income between partners, suggesting that participants showed more concern for their partners when they knew they would be rated. Even with public reputation information, bilateral relationships remained central to the market. Market failures in existing grazing rights markets may be better addressed by measures to increase communication between partners rather than simply relying on a formal reputation mechanism.  相似文献   
55.
South Korea began its measurement of Gross National Product during the turbulent 1950's, a period of postwar rebuilding and of political and social changes. With only a small and largely inexperienced staff, and with little support from other statistical agencies whose data were essential to adequate GNP measurement, the Bank of Korea began this task in the early 1950's. Early estimates were extremely rough; over the years, the statistical staff was trained and other statistical agencies were upgraded. Measurements of output in the large agricultural sector and in manufacturing have gradually but consistently been strengthened as recent input-output data has been developed. Gaps still persist, particularly in the wholesale and retail sectors, but certain strengths are present: an outstanding job has been done in product pricing. The author describes the evolution of Korea's improving GNP program, presents its sources of data and its methodologies, and gives an assessment of problems of the past and prospects for the future.  相似文献   
56.
57.
A method of futures research is used to empirically test a structure-conduct-performance (SCP) model in a marketing setting. It is proposed that within the macroenvironment there exist, varying levels of resource constraints and structural fluctuations which are positively correlated. Increased resource constraints and structural fluctuations, which are characteristics of a turbulent environment, are expected to increase the competitive intensity is an industry. This higher level of competitive intensity is hypothesized to result in increased use of nonprice marketing strategies. Nonprice marketing strategies are also expected to increase business performance because of the contingency relationship between conduct (strategy) and performance. The possible role of “blind” luck or stochastic processes in determining success is also discussed.  相似文献   
58.
Joseph F. Coates   《Futures》2009,41(10):694-705
This paper is a brief look at a wide range of risks that are said to present great threats to humankind. It was stimulated by several interacting factors. First, too many books and articles about astrophysical catastrophes, in the scientific and semi-scientific press, give relatively little attention to their timeframe or the measures to anticipate and prepare for them. Second, and most important, is that the overblown effects of 9/11 have distorted the United States of America's perspective and agenda on catastrophes. The result is that billions of dollars have been wasted and attention turned away from threats that could be truly catastrophic for the United States and, in many cases, for the rest of the world. Third, are books that have become popular by raising the threat that what will happen to us will be similar to what happened to earlier societies such as the Maya and the Easter Islanders. Most notably among these is Jared Diamond's Collapse [Jared Diamond, Collapse: How Societies Choose to Fail or Succeed, Penguin Group, 2005]. The failure in these doomsday arguments is to overlook the greater sophistication, knowledge, awareness, monitoring and preparation currently in the United States and in other parts of the globe. The institutional structure and scientific knowledge today would either prevent or deal with the kind of socio-economic decline anticipated by the “collapse” arguments. In contrast several geophysical and celestial risks do imply global catastrophe. The value of this paper is as broad background to the specific scenario papers that follow. While it leans heavily on the work of others, it offers three new features for the analysis of any extreme risk. First is a scale of devastation, based on deaths. Second is a comprehensive time frame—now to the end of the Earth. Third is an outline of general questions that must be addressed for any risk, however large or small, if it is to provide insight into policy choices and promote systemic thinking.  相似文献   
59.
60.
Entrepreneurs need to act under conditions of uncertainty and resource constraints to bring new, often-unrecognizable products to market and convince an unknown set of stakeholders to support their endeavours. The type of action entrepreneurs take to navigate uncertain entrepreneurial contexts is underspecified. We analysed 48 interviews with entrepreneurs to inductively identify an action-oriented construct we labelled as entrepreneurial hustle – an entrepreneur’s urgent, unorthodox actions that are intended to be useful in addressing immediate challenges and opportunities under conditions of uncertainty. In a follow-up study, we use an experimental vignette approach to assess the impact of an entrepreneur’s hustle on venture stakeholders. Findings suggest that entrepreneurial hustle positively influences stakeholder perceptions of the entrepreneur’s leadership effectiveness and a venture’s legitimacy, mediated by perceptions of the entrepreneur’s ability-based trustworthiness. We conclude that entrepreneurial hustle is a fundamental behaviour that enables entrepreneurs to enrol new venture stakeholders and lead their entrepreneurial efforts.  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