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   41390篇
  免费   851篇
财政金融   7866篇
工业经济   3063篇
计划管理   6904篇
经济学   9171篇
综合类   440篇
运输经济   260篇
旅游经济   684篇
贸易经济   6464篇
农业经济   1917篇
经济概况   5389篇
信息产业经济   2篇
邮电经济   81篇
  2021年   244篇
  2020年   447篇
  2019年   592篇
  2018年   827篇
  2017年   834篇
  2016年   779篇
  2015年   567篇
  2014年   867篇
  2013年   4155篇
  2012年   1122篇
  2011年   1258篇
  2010年   1056篇
  2009年   1198篇
  2008年   1203篇
  2007年   1075篇
  2006年   1005篇
  2005年   877篇
  2004年   890篇
  2003年   875篇
  2002年   842篇
  2001年   848篇
  2000年   852篇
  1999年   768篇
  1998年   784篇
  1997年   730篇
  1996年   702篇
  1995年   640篇
  1994年   692篇
  1993年   717篇
  1992年   691篇
  1991年   712篇
  1990年   619篇
  1989年   526篇
  1988年   519篇
  1987年   522篇
  1986年   537篇
  1985年   772篇
  1984年   742篇
  1983年   735篇
  1982年   693篇
  1981年   608篇
  1980年   578篇
  1979年   590篇
  1978年   515篇
  1977年   447篇
  1976年   376篇
  1975年   385篇
  1974年   332篇
  1973年   322篇
  1972年   255篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
Abstract:  Loan announcement effects for 152 Canadian companies are examined to investigate the efficiency of monitoring by banks facing lender environmental liability. Market reaction to the announcement of bank debt to 'environmental' firms is more positive and significant than for 'non-environmental' firms and, for firms in industries with a higher likelihood of experiencing spill events, is more positive and significant, reinforcing earlier results that establish a relationship between specific loan/borrower characteristics and announcement period excess returns and providing further evidence on the 'uniqueness' of bank loans by demonstrating the superior ability of banks to monitor corporate borrowers exposed to environmental liability.  相似文献   
23.
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   
24.
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   
25.
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   
26.
27.
28.
A growing awareness of workplace hazards and identification of airborne contaminants, coupled with a changing safety and health regulatory environment, created an unexpected demand for new and innovative respirators in the early 1980s. 3M's Occupational Health and Environmental Safety Division broke new ground by taking the team concept further than ever before in the company. The division's Action Teams successfully designed, built and introduced products in less than half the time it would have taken previously. Robert Hershock, Charles Cowman and Douglas Peters describe how 3M learned important lessons about team selection, training, performance and motivation, the importance of project sponsors, and the role of middle management.  相似文献   
29.
Atlanta has the reputation of being a city of opportunity for blacks. However, in Atlanta, as well as in other cities across the nation, the nexus of racism and economic discrimination has resulted in disparities between the housing status of blacks and whites. This article examines racial disparities in the Atlanta housing market. It begins by tracing recent trends in the Atlanta-area economy and by providing background information on the local housing market. It then discusses the roles of the federal Home Mortgage Disclosure Act of 1975 and Community Reinvestment Act of 1977 in the efforts of local groups to reduce racial disparities in the housing market. The final section discusses recent local developments that might lead to improvements in the housing status of black Atlantans.  相似文献   
30.
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