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   141855篇
  免费   3323篇
  国内免费   1篇
财政金融   26583篇
工业经济   11853篇
计划管理   22795篇
经济学   30672篇
综合类   1501篇
运输经济   994篇
旅游经济   2542篇
贸易经济   24266篇
农业经济   6266篇
经济概况   17407篇
信息产业经济   8篇
邮电经济   292篇
  2021年   869篇
  2020年   1681篇
  2019年   2436篇
  2018年   2482篇
  2017年   2628篇
  2016年   2790篇
  2015年   2154篇
  2014年   3478篇
  2013年   15675篇
  2012年   4325篇
  2011年   4366篇
  2010年   3880篇
  2009年   4509篇
  2008年   4094篇
  2007年   3437篇
  2006年   3734篇
  2005年   3708篇
  2004年   3286篇
  2003年   3052篇
  2002年   2984篇
  2001年   2777篇
  2000年   2704篇
  1999年   2561篇
  1998年   2445篇
  1997年   2429篇
  1996年   2321篇
  1995年   2102篇
  1994年   2130篇
  1993年   2102篇
  1992年   2140篇
  1991年   2062篇
  1990年   1909篇
  1989年   1735篇
  1988年   1674篇
  1987年   1685篇
  1986年   1766篇
  1985年   2541篇
  1984年   2420篇
  1983年   2225篇
  1982年   2091篇
  1981年   2005篇
  1980年   1969篇
  1979年   1894篇
  1978年   1690篇
  1977年   1645篇
  1976年   1406篇
  1975年   1306篇
  1974年   1205篇
  1973年   1201篇
  1972年   912篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
It is shown that minimum distance estimators for families of unimodal densities are always consistent; the rate of convergence is indicated. An algorithm is proposed for computing the minimum distance estimator for the family of all unimodal densities. References are given to the maximum likelihood method and the kernel method.  相似文献   
992.
建立我国多层次资本市场体系的若干关键问题   总被引:2,自引:0,他引:2  
我国资本市场发展的目标模式是建立多层次资本市场体系。为了实现这一目标,要进一步规范和发展主板市场,坚持市场化的改革取向,积极稳妥地解决主板市场上的结构性非均衡;在搞好中小企业板的基础上分步骤推进创业板建设;完善股份代办市场,实施功能转型,使之转变为真正的三板市场。  相似文献   
993.
Selecting Sites for New Facilities Using Data Envelopment Analysis   总被引:3,自引:0,他引:3  
This paper develops a mathematical programming model for obtaining a best set of sites for planned facilities. The model is concerned with those situations where resource constraints are present. The specific setting for the paper involves the selection of sites for a set of retail outlets, wherein the ratio of aggregate outputs to inputs for the selected set is maximal among all possible sets that could be chosen. At the same time, the model guarantees that the only sets of stores allowable are those for which the available resources are used to the maximum extent possible.  相似文献   
994.
Corporate Reputation and Social Performance: The Importance of Fit   总被引:6,自引:0,他引:6  
abstract    Utilizing data on a sample of large firms, we estimate a model of corporate reputation. We find reputation, derived from the assessments of managers and market analysts, to be determined by a firm's social performance, financial performance, market risk, the extent of long-term institutional ownership, and the nature of its business activities. Furthermore, the reputational effect of social performance is found to vary both across sectors, and within sectors across the various types of social performance. Specifically, our results demonstrate the need to achieve a 'fit' among the types of corporate social performance undertaken and the firm's stakeholder environment. For example, a strong record of environmental performance may enhance or damage reputation depending on whether the firm's activities 'fit' with environmental concerns in the eyes of stakeholders.  相似文献   
995.
Previous research in the areas of tournaments, human capital, and learning theory have shown that promotion is a function of human capital, experience, ability, and wage growth. These variables were used to estimate a Cox regression using data from a single firm. The survival rates for a Cox regression and an up-or-out regression model are computed. The results suggest that certain up-or-out models are valid even when the firm does not have such a policy and show that an up-or-out procedure predicts the promotion and exit survival rates as well as a Cox regression.  相似文献   
996.
The Worker Adjustment and Retraining Notification (WARN) Act of 1989 mandated that at least 60 days advance notice be given to employees. Critics argued that its passage would decrease managerial flexibility in closing plants, subsequently reducing firm values. This study addresses this issue by examining the stock market's reaction to announcements leading to the eventual enactment of the WARN legislation. We find evidence indicating negative effects of the legislation on stock returns of small firms.  相似文献   
997.
江西大型企业资本运作模式的现状及其改进对策研究   总被引:1,自引:0,他引:1  
资本运作是一种有效配置资源、实现企业资本增殖的活动,其核心是产权制度创新。本文对江西大型企业资本运作模式的现状进行了分析,进而提出了一系列的合理的改进对策,以期提高起运作绩效。  相似文献   
998.
With data gained from a controlled field experiment in Switzerland this paper analyses the effects of moral suasion on the timely paying and the timely filling out of the tax form 2001. Comparisons of different tax filing years and multiple regression estimations have been done using these two factors as dependent variables to check if there is a significant difference between the control group and the treatment group. In February 2002 the treatment group received a letter signed by the communes fiscal commissioner containing normative appeals. Results indicate that moral suasion has hardly any effect on taxpayers compliance behaviour. The strongest effect can be observed for the variable tax payments.Received: February 2003, Accepted: June 2004 JEL Classification: H260, H710BennoTorgler: Special thanks are due to the tax administration of Trimbach, especially to Adolf Müller and Gary Bitterli, who offered me the opportunity to collect the data and assisted the project. Furthermore I acknowledge the financial support of the WWZ-Forum and Swiss National Science Foundation and comments and suggestions from Doris Aebi, René L. Frey, the editor Kai A. Konrad and two anonymous referees.  相似文献   
999.
Anchor stores   总被引:2,自引:0,他引:2  
Planned shopping malls usually have one or more department (anchor) stores and multiple specialized retailers selling substitutable commodities in each commodity category. If consumers know their taste for the anchor's commodity and its price, but learn about a retailer's commodity only by costly search, collocation may benefit both store types. Intra-mall competition reduces markups, but anchors guarantee a minimum surplus from search. A mall with many retailers makes finding a suitable specialized commodity highly probable. For some parameters, additional consumer search dominates the loss in retail markups, so a profit-maximizing land developer would rent mall space to both store types.  相似文献   
1000.
This paper presents a logit model for dating business-cycle turning points. The regressors are monthly series from the Business Cycle Indicators database of the Conference Board. Dividing the sample period into a subset for model initialization (1959∶9–1970∶12) and a subset for testing (1971∶1–2003∶12) yields a chronology that is nearly identical to that established by the National Bureau of Economic Research (NBER). However, the recognition lag is less than four months, in contrast to an average of more than eleven months for the official chronology. (JEL E320) The author is grateful for comments by an anonymous referee.  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