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   34267篇
  免费   675篇
财政金融   6382篇
工业经济   2534篇
计划管理   5758篇
经济学   7676篇
综合类   386篇
运输经济   209篇
旅游经济   575篇
贸易经济   5335篇
农业经济   1643篇
经济概况   4371篇
邮电经济   73篇
  2021年   203篇
  2020年   358篇
  2019年   466篇
  2018年   644篇
  2017年   646篇
  2016年   603篇
  2015年   455篇
  2014年   684篇
  2013年   3422篇
  2012年   914篇
  2011年   1021篇
  2010年   818篇
  2009年   986篇
  2008年   1004篇
  2007年   911篇
  2006年   827篇
  2005年   788篇
  2004年   760篇
  2003年   772篇
  2002年   712篇
  2001年   705篇
  2000年   708篇
  1999年   630篇
  1998年   647篇
  1997年   607篇
  1996年   591篇
  1995年   549篇
  1994年   574篇
  1993年   580篇
  1992年   536篇
  1991年   576篇
  1990年   519篇
  1989年   433篇
  1988年   445篇
  1987年   433篇
  1986年   452篇
  1985年   653篇
  1984年   622篇
  1983年   616篇
  1982年   589篇
  1981年   512篇
  1980年   499篇
  1979年   512篇
  1978年   448篇
  1977年   402篇
  1976年   335篇
  1975年   322篇
  1974年   301篇
  1973年   273篇
  1972年   218篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
The paper asks the question – as time series analysis moves from consideration of conditional mean values and variances to unconditional distributions, do some of the familiar concepts devised for the first two moments continue to be helpful in the more general area? Most seem to generalize fairly easy, such as the concepts of breaks, seasonality, trends and regime switching. Forecasting is more difficult, as forecasts become distributions, as do forecast errors. Persistence can be defined and also common factors by using the idea of a copula. Aggregation is more difficult but causality and controllability can be defined. The study of the time series of quantiles becomes more relevant.  相似文献   
42.
Two of the main forces driving European emigration in the late nineteenth century were real wage gaps between sending and receiving regions and demographic booms in the low‐wage sending regions. Our new estimates of net migration for the countries of sub‐Saharan Africa show that exactly the same forces driving African across‐border migration are at work today. The results suggest that rapid growth in the cohort of potential young emigrants, population pressure on the resource base, and slow economic growth are likely to intensify the pressure for migration out of Africa and into high‐wage OECD countries over the next two decades.  相似文献   
43.
44.
45.
If one looks at environmental quality N as a renewable natural resource (with its own natural dynamics) which is changed by emissions Z, then one gets a better understanding of the shape of the damage function. In the case of a logistic growth dynamics one obtains a well-shaped transformation frontier N(Z), even in a two-species natural dynamics. For a more general natural interaction in the framework of a prey-predator model one obtains the possibilities of a cusp catastrophe which makes the transformation frontier N(Z) ill-shaped for the standard arguments of economists and their most favoured environmental policy instruments.  相似文献   
46.
Outsourcing is becoming a major option in British business, including the financial services industry, and it raises a number of ethical considerations. The author of this major ethical study contends that "Outsourcing seems to present a particular threat to employees ... because of the factors which have led to outsourcing and the way in which it tends to work." Mike Henderson is an Associate of the Chartered Institute of Bankers and Senior Lecturer in Financial Services in the School of Financial Studies and Law of Sheffield Hallam University, City Campus, Pond Street, Sheffield S1 1WB, England.  相似文献   
47.
Open-bank assistance (OBA), provided to troubled banking institutions by the FDIC to prevent their failure, has been criticized extensively on grounds that closed-bank transactions, especially early closed bank transactions, are less expensive to the FDIC. This article analyzes a case in which OBA makes public policy sense, under conditions in which uncertainty is introduced into the valuation of a bank's nonperforming assets. Under such uncertainty, the FDIC may play a role by providing to the acquiror of the troubled institution essentially costless (to the FDIC) standby insurance on the ultimate workout values of the nonperforming assets. If properly structured, such an OBA transaction would meet critics' objections by minimizing FDIC cost and creating incentives for the early recapilization of troubled banks.  相似文献   
48.
This article argues that the moral right to be discharged only for good cause and like rights can be contracted away by employees in appropriate circumstances. It maintains that the rights in question are not inalienable, and that there is nothing irrational about an employee's wishing to deal them away. It also maintains that inequalities in bargaining power between employers and employees are insufficiently pervasive to justify a flat ban on the alienation of these rights. For a waiver of such rights to be valid, however, employees must have full knowledge of its terms.The question addressed here bears on several legal and policy issues affecting termination of the employment relation. If employees can contract away their right to a goodcause discharge, the American doctrine of employment at willmight find justification in the face of that right. In addition, the alienability of such discharge rights may be necessary to justify express disclaimers of wrongful discharge liability and the waiver provision of the new U.S. Draft Uniform Employment-Termination Act.Michael J. Phillips is Professor of Business Law and Chairman of the Business Law Department of Indiana University's School of Business. He is a former editor-in-chief of theAmerican Business Law Journal, and has authored numerous law journal articles.  相似文献   
49.
In this paper we analyze the properties of price equilibria in a duopoly market where firms sell vertically differentiated products, consumers being uncertain about which firm sells which quality. Both existence and properties of price equilibria are characterized by the beliefs of the consumers' population about the distribution of quality between firms.  相似文献   
50.
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