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   25950篇
  免费   509篇
  国内免费   1篇
财政金融   4975篇
工业经济   1893篇
计划管理   3870篇
经济学   5717篇
综合类   405篇
运输经济   188篇
旅游经济   489篇
贸易经济   3964篇
农业经济   1305篇
经济概况   3597篇
信息产业经济   1篇
邮电经济   56篇
  2021年   153篇
  2020年   278篇
  2019年   469篇
  2018年   548篇
  2017年   556篇
  2016年   554篇
  2015年   313篇
  2014年   567篇
  2013年   2632篇
  2012年   773篇
  2011年   862篇
  2010年   725篇
  2009年   812篇
  2008年   782篇
  2007年   678篇
  2006年   623篇
  2005年   536篇
  2004年   552篇
  2003年   502篇
  2002年   546篇
  2001年   472篇
  2000年   490篇
  1999年   476篇
  1998年   437篇
  1997年   452篇
  1996年   453篇
  1995年   375篇
  1994年   390篇
  1993年   421篇
  1992年   437篇
  1991年   427篇
  1990年   350篇
  1989年   319篇
  1988年   317篇
  1987年   323篇
  1986年   329篇
  1985年   518篇
  1984年   459篇
  1983年   435篇
  1982年   408篇
  1981年   365篇
  1980年   420篇
  1979年   343篇
  1978年   287篇
  1977年   278篇
  1976年   211篇
  1975年   263篇
  1974年   204篇
  1973年   200篇
  1972年   140篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
Economists at the Federal Trade Commission (FTC) pursue the agency’s competition and consumer protection missions. In this year’s essay, in antitrust, we discuss the new Merger Guidelines, three exclusion cases, and R&D issues in the Thoratec/HeartWare merger and the Google/AdMob merger. In consumer protection, we discuss the FTC’s new rule on debt settlement, our efforts to improve disclosures, and our recent work on appliance energy disclosures.  相似文献   
972.
This paper is an exercise in the history of thought, which compares Austrian and neoclassical theories of the emergence of private property rights, and examines, in part, the extent to which Austrians can be said to offer a commonly-agreed upon explanation that parallels Carl Menger's exemplary story of the emergence of money. We address the sources of disagreement (and apparent conflict) among emergence theorists in both schools. We try to show that some of the disagreement hinges on an unclear meaning of the term “emergence,” which is resolvable, while other sources of disagreement are fundamental at the methodological level. JEL Code B25, E40, E53  相似文献   
973.
Economic models typically allow for “free disposal” or “reversibility” of information, which implies non-negative value. Building on previous research on the “curse of knowledge” we explore situations where this might not be so. In three experiments, we document situations in which participants place positive value on information in attempting to predict the performance of uninformed others, even when acquiring that information diminishes their earnings. In the first experiment, a majority of participants choose to hire informed—rather than uninformed—agents, leading to lower earnings. In the second experiment, a significant number of participants pay for information—the solution to a puzzle—that hurts their ability to predict how many others will solve the puzzle. In the third experiment, we find that the effect is reduced with experience and feedback on the actual performance to be predicted. We discuss implications of our results for the role of information and informed decision making in economic situations. Electronic Supplementary Material Supplementary material is available in the online version of this article at http://dx.doi.org/10.1007/s10683-006-9128-y. JEL Classification C91, D83  相似文献   
974.
975.
976.
来博弈吧!     
正经济学家长久以来一直在用博弈论理解世界。如今,工程师和计算机科学家也正在用这个理论重新构思他们的工作。你和一同犯下重大抢劫案的同伙都被警察抓获了,并且被关进不同的房间进行审问。如果你们两个都对犯罪保持沉默,就会被以较轻的罪名判处一年徒刑。如果你们两个都坦白交代,就都会坐5年牢。但是,如果你  相似文献   
977.
In this paper, we analyze a majority voting process on the earnings-related part of pension benefits in a Social Security system with flexible retirement. We show that the aging of the population may make it easier to implement one of the proposed reforms to achieve a delay in the average retirement age of workers, to reinforce the link between contributions and pensions.  相似文献   
978.
In this paper, we discuss the properties of preliminary test estimators (PTE) of the parameters of simple linear model with measurement error (ME model) when the slope of the linear model is suspected to be zero. Expressions of the bias, MSE and efficiencies are obtained under conditional as well as unconditional situations with known reliability coefficient. Conditional model results are compared to the standard model without measurement error. We also provide the unconditional model analysis in finite samples. Asymptotic theory under local alternatives is developed when the variance of measurement error or the ratio of the variance of the model error relative to the variance of the measurement error is known. Asymptotic expressions of bias and MSE of the estimators along with their efficiencies are obtained. In every case, it is shown that the measurement error tend to increase the variability of the estimators compared to the estimators without measurement error. Graphs and tables are provided to see these results and to determine optimum level of significance for minimum guaranteed efficiency. Received October 2001 RID="*" ID="*"  A. K. Md. E. Saleh is a Distinguished Research Professor and H. M. Kim is a Ph.D. candidate in the School of Mathematics and Statistics, Carleton University, Ottawa. Acknowledgment. The authors gratefully acknowledge the constructive suggestion of the referees to improve the paper. The research is supported by NSERC grant A3088.  相似文献   
979.
This paper draws attention for the fact that traditional Data Envelopment Analysis (DEA) models do not provide the closest possible targets (or peers) to inefficient units, and presents a procedure to obtain such targets.It focuses on non-oriented efficiency measures (which assume that production units are able to control, and thus change, inputs and outputs simultaneously) both measured in relation to a Free Disposal Hull (FDH) technology and in relation to a convex technology. The approaches developed for finding close targets are applied to a sample of Portuguese bank branches.  相似文献   
980.
This paper introduces a simple, yet rich, measure of efficiency changes based on the revenue-generating-ability (RGA) principle. Using this principle, we explain the connections between efficiency changes and the variables, such as pretax profits, interest expense, non-interest expense, profit margins, loan loss provision, and asset quality. These connections are used to explain earnings differences between small and large commercial banks.  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