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   16159篇
  免费   321篇
  国内免费   1篇
财政金融   3426篇
工业经济   1173篇
计划管理   2694篇
经济学   3623篇
综合类   200篇
运输经济   69篇
旅游经济   235篇
贸易经济   2487篇
农业经济   801篇
经济概况   1696篇
邮电经济   77篇
  2020年   169篇
  2019年   233篇
  2018年   262篇
  2017年   319篇
  2016年   300篇
  2015年   200篇
  2014年   325篇
  2013年   1470篇
  2012年   394篇
  2011年   418篇
  2010年   370篇
  2009年   431篇
  2008年   377篇
  2007年   387篇
  2006年   352篇
  2005年   321篇
  2004年   290篇
  2003年   338篇
  2002年   307篇
  2001年   312篇
  2000年   357篇
  1999年   294篇
  1998年   306篇
  1997年   315篇
  1996年   301篇
  1995年   302篇
  1994年   308篇
  1993年   293篇
  1992年   327篇
  1991年   342篇
  1990年   270篇
  1989年   214篇
  1988年   235篇
  1987年   218篇
  1986年   249篇
  1985年   347篇
  1984年   333篇
  1983年   290篇
  1982年   306篇
  1981年   331篇
  1980年   280篇
  1979年   280篇
  1978年   253篇
  1977年   185篇
  1976年   185篇
  1975年   195篇
  1974年   141篇
  1973年   164篇
  1972年   120篇
  1971年   103篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
This study examines the influence of day-of-the-week patterns in security returns on long-run IPO underperformance. Comparisons are made between the IPOs in Ritter's [20] database, and a constructed set of matching firms based on SIC code and size, using NYSE, AMEX, and NASDAQ securities. It is found that virtually all of the IPO underperformance occurs on Mondays and Tuesdays and that the degree of underperformance significantly differs from other days. Thus, a common explanation may exist for the general day-of-the-week pattern in security returns and IPO long-run underperformance.  相似文献   
12.
In this paper we offer a method for deciding how to aggregate a set of elementary industries. The method is then applied to the problem of estimating a wage equation that allows for industry-specific effects. Our method explicitly formalizes the trade-off between goodness-of-fit and parsimony implicit in an aggregation problem. By varying the parameter of the assumed loss function, one obtains a whole sequence of aggregation levels. Further, the resulting sequence is consistent; that is, groupings formed at one level of aggregation will never be undone when one aggregates further.  相似文献   
13.
The influence of lagged adjustment and consumer spending on retail labour productivity is investigated. Both influences result in a procyclical productivity pattern.  相似文献   
14.
15.
16.
This article reports on the latest in a series of international comparisons of management practices and performance outcomes of industries in various countries. Here, it is the service industries in the UK and the US which come under the microscope. Among the companies surveyed, there were more world-class performers in the US than the UK, but also more low performers. The concluding part of the article is diagnostic – the authors also suggest measures which could improve performance.  相似文献   
17.
The price movements of certain assets can be modeled by stochastic processes that combine continuous diffusion with discrete jumps. This paper compares values of options on assets with no jumps, jumps of fixed size, and jumps drawn from a lognormal distribution. It is shown that not only the magnitude but also the direction of the mispricing of the Black-Scholes model relative to jump models can vary with the distribution family of the jump component. This paper also discusses a methodology for the numerical valuation, via a backward induction algorithm, of American options on a jump-diffusion asset whose early exercise may be profitable. These cannot, in general, be accurately priced using analytic models. The procedure has the further advantage of being easily adaptable to nonanalytic, empirical distributions of period returns and to nonstationarity in the underlying diffusion process.  相似文献   
18.
19.
This paper employs the optimality conditions for expected utility and mean-variance portfolio problems to examine the ambiguities associated with the security market line criterion both at a point in time and through time. At a point in time, we show that the security market line criterion can be irrelevant, even in meanvariance economies. In a multiperiod setting, we show that the analysis of performance based on portfolio choice is inconsistent with the analysis based on return generating models. Empirical work suggests that the inconsistency can lead to dramatically different estimates of a security's required return.  相似文献   
20.
Whilst the local multiplier impacts of the annual operation of universities has been the subject of intensive research, the economic impacts of capital construction projects have been almost completely ignored. This paper presents the results of detailed analysis of capital projects at Lancaster University in 1993-The reasons for the radically different annual operation and construction multipliers estimated in the Lancaster study are examined. Despite the smaller size of construction multipliers it is argued that it is a serious mistake to estimate local construction multipliers by making simplifying assumptions on the size of the key parameters in the multiplier equations.  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