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   15554篇
  免费   314篇
财政金融   2840篇
工业经济   1100篇
计划管理   2601篇
经济学   3340篇
综合类   135篇
运输经济   126篇
旅游经济   279篇
贸易经济   2430篇
农业经济   810篇
经济概况   2163篇
信息产业经济   2篇
邮电经济   42篇
  2021年   88篇
  2020年   157篇
  2019年   256篇
  2018年   337篇
  2017年   329篇
  2016年   314篇
  2015年   205篇
  2014年   339篇
  2013年   1457篇
  2012年   444篇
  2011年   461篇
  2010年   391篇
  2009年   458篇
  2008年   468篇
  2007年   388篇
  2006年   375篇
  2005年   315篇
  2004年   345篇
  2003年   335篇
  2002年   336篇
  2001年   294篇
  2000年   338篇
  1999年   291篇
  1998年   283篇
  1997年   258篇
  1996年   264篇
  1995年   252篇
  1994年   244篇
  1993年   223篇
  1992年   247篇
  1991年   251篇
  1990年   252篇
  1989年   212篇
  1988年   171篇
  1987年   183篇
  1986年   201篇
  1985年   302篇
  1984年   259篇
  1983年   226篇
  1982年   251篇
  1981年   224篇
  1980年   221篇
  1979年   214篇
  1978年   190篇
  1977年   171篇
  1976年   166篇
  1975年   162篇
  1974年   130篇
  1973年   128篇
  1972年   107篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
We introduce the “ball-catching task”, a novel computerized task, which combines a tangible action (“catching balls”) with induced material cost of effort. The central feature of the ball-catching task is that it allows researchers to manipulate the cost of effort function as well as the production function, which permits quantitative predictions on effort provision. In an experiment with piece-rate incentives we find that the comparative static and the point predictions on effort provision are remarkably accurate. We also present experimental findings from three classic experiments, namely, team production, gift exchange and tournament, using the task. All of the results are closely in line with the stylized facts from experiments using purely induced values. We conclude that the ball-catching task combines the advantages of real effort tasks with the use of induced values, which is useful for theory-testing purposes as well as for applications.  相似文献   
102.
The literature on trade liberalization and environment has not yet considered federal structures. In this paper, we show how the design of environmental policy in a federal system has implications for the effects of trade reform. Trade liberalization leads to a decline in pollution taxes, regardless of whether pollution taxes are set at the federal (centralized) or local (decentralized) level, and it increases social welfare. The effect under a decentralized system is smaller than if these taxes are set by the federal government, and pollution emissions therefore decline in this case. Moreover, majority bias interacts with trade liberalization if federal taxes are used.  相似文献   
103.
Can economically efficient outcomes be obtained and sustained in the absence of externally enforced property rights? We study the evolutionary properties of a game that exhibits two well-defined Nash equilibria: one generates an inefficient outcome while the other set generates an efficient outcome supported by the potential for retaliation. Although standard forward-looking refinements eliminate the efficient equilibrium, neither equilibrium type satisfies strict evolutionary stability criteria. However, both types of equilibrium define strategies that are neutrally stable, which makes them vulnerable to drift in dynamic environments. We conduct computer simulation experiments in which players learn adaptively via a tournament selection mechanism called sophisticated experimentation. Our simulations demonstrate that while the system spends a disproportionately high proportion of time in the inefficient equilibrium set, the efficient equilibrium is pervasive as the system drifts back and forth between the equilibrium sets, never settling on one or the other.  相似文献   
104.
Land Use Rights (LURs) in China affect farmers’ productivity through investment incentives and the way land is allocated across households. LURs have implication and trade-offs between equity and growth. This paper examines how Chinese farmers might respond if the Chinese government made it legal for farmers to buy or sell LURs. Livelihood choices, labor substitution, market infrastructure, a lack of property right protections, entrepreneurship, bureaucracy, and political will are all influential factors that will determine whether such a program would work. The purpose of this paper is to examine the economics of transaction in LURs, estimate the value at which LURs could transact in equilibrium, and to analyze factors that would affect these price changes. We evaluate farmer’s intention to buy and sell LURs and how much they are willing to pay and receive for LURs.  相似文献   
105.
The Low-Income Home Energy Assistance Program (LIHEAP) is a federal block grant program to help low-income households pay their heating and cooling bills. If the regular fiscal year LIHEAP appropriation is less than or equal to $1.975 billion, then a 1981 formula is applied to distribute funding across states, while if appropriations rise above the $1.975 billion threshold, a 1984 formula is applied in conjunction with two hold-harmless provisions. In 18 of the past 20 years, the 1981 formula has served as the default mechanism to distribute LIHEAP funding. The purpose of this paper is to call attention to the inadequacy of the 1981 formula and to explain why the objectives of LIHEAP are not met when this formula is used. We explain why the distribution of LIHEAP funds is not proportionate to the need for assistance and offer some suggestions for improvement. The 1981 formula is shown to be the outcome of a convoluted political process heavily biased in favor of cold-climate states, with cold-climate states receiving on-the-order of at least $150 million a year in allotment dollars beyond their “fair share” of heating requirements. The 1981 and 1984 distribution formulas are derived and a critical examination of each formula is presented. The 1984 formula is shown to be an ideal mechanism to distribute LIHEAP funds, based on a scientific and rational understanding of low-income energy needs, but legislative constraints prevent its application.  相似文献   
106.
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   
107.
Comparing prospective data from the UK and Russia, this paper analyzes whether the association of labour market status, and particularly unemployment, with subsequent health varies by the level of state protection provided to the unemployed. While the UK's unemployment welfare regime is classified as providing minimal protection, the Russian regime is sub-protective. Employing Cox duration analysis upon data from the Russian Longitudinal Monitoring Survey and the British Household Panel Survey for the period 2000–2007, this study finds that labour market status and economic circumstances independently predicted individual-level declines in self-rated health and, contrary to expectations, the associations of unemployment with health decline were similarly sized in the two countries.  相似文献   
108.
109.
This paper estimates and tests a model of the demand for money function, which uses the public's expectations of future inflation as a proxy of the opportunity cost of holding money. The hallmark of the paper is that expectations are rational inMuth sense. The cross-equation rational expectations restrictions are derived and then tested, using quarterly Greek data of the high inflation period 1973I to 1981 IV. The paper concludes that the evidence is consistent with the rational expectations assumption and supports the adopted specification of the money demand function.  相似文献   
110.
We analyze the drivers of audience size and the number of questions asked in parallel sessions at the annual conference of the German Economics Association. We find that the location of the presentation is at least as important for the number of academics attending a talk as the combined effect of the person presenting and the paper presented. Being a presenter in a late morning session on the second day of a conference, close to the place where coffee is served, significantly increases the size of the audience. When it comes to asking questions, location becomes less important, but smaller rooms lead to more questions being asked. Younger researchers and very senior researchers attract more questions and comments. There are also interesting gender effects. Women attend research sessions more diligently than men, but seem to ask fewer questions than men. Men are less likely to attend presentations on health, education, welfare and development economics than women. Our findings suggest that strategic scheduling of sessions could ensure better participation at conferences. Moreover, different behaviors of men and women at conferences might also contribute to the lack of women in senior scientist positions.  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