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   135547篇
  免费   3828篇
  国内免费   1篇
财政金融   25571篇
工业经济   11554篇
计划管理   21625篇
经济学   29179篇
综合类   1451篇
运输经济   955篇
旅游经济   2482篇
贸易经济   23369篇
农业经济   6087篇
经济概况   16854篇
信息产业经济   7篇
邮电经济   242篇
  2021年   826篇
  2020年   1626篇
  2019年   2374篇
  2018年   2296篇
  2017年   2481篇
  2016年   2654篇
  2015年   2084篇
  2014年   3398篇
  2013年   15243篇
  2012年   4176篇
  2011年   4085篇
  2010年   3657篇
  2009年   4283篇
  2008年   3855篇
  2007年   3197篇
  2006年   3547篇
  2005年   3558篇
  2004年   3096篇
  2003年   2873篇
  2002年   2840篇
  2001年   2645篇
  2000年   2596篇
  1999年   2459篇
  1998年   2321篇
  1997年   2364篇
  1996年   2206篇
  1995年   2031篇
  1994年   2036篇
  1993年   2011篇
  1992年   2053篇
  1991年   1946篇
  1990年   1820篇
  1989年   1683篇
  1988年   1613篇
  1987年   1611篇
  1986年   1694篇
  1985年   2451篇
  1984年   2335篇
  1983年   2124篇
  1982年   1989篇
  1981年   1927篇
  1980年   1902篇
  1979年   1823篇
  1978年   1632篇
  1977年   1623篇
  1976年   1377篇
  1975年   1272篇
  1974年   1188篇
  1973年   1183篇
  1972年   897篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
151.
In this paper we will analyze the relationship between the value and duration moments of a cash flow and movements in the yield curve. We will show that for changes in the yield curve which can be related to tn , the 1st order changes in the net present value of a cash flow are linearly dependent on the n + lth duration moments, and that the 2nd order changes are dependent on the sum of duration moments of order 2 n + 1 and 2 n + 2. We will use this relationship to tilt tracking portfolios so as to protect them against specific changes in the yield curve.  相似文献   
152.
Objections to the teaching of business ethics   总被引:1,自引:0,他引:1  
  相似文献   
153.
In this paper, we examine the warrant price and stock price reactions to the announcement of warrant life extensions by REITs. As predicted by option pricing theory, warrant prices increase in response to these extensions. The stocks of REITs making the extension announcements experience average abnormal returns that are not significantly different from zero. Thus, total firm value appears to increase, with the gains accruing primarily to the warrantholders.  相似文献   
154.
155.
R.Q. Doeswijk 《De Economist》1997,145(4):573-598
The efficient markets hypothesis states that at any times security prices fully reflect all available information. Contrarian investment strategies do not recognize the efficiency of capital markets. They call for buying undervalued stocks, i.e. stocks with a low price relative to their fundamentals. The idea behind such a strategy is to take advantage of the extrapolation behaviour of naive investors. Using a fresh and extensive data set from the Dutch stock market, we found that these strategies yield an outperformance without a higher risk. Our results make it hard to maintain the efficient market hypothesis.  相似文献   
156.
157.
Abstract The research question in the present article can be phrased in the following way: what are the elements which influence the perception of the utility of information received from another function? A field study research has been conducted in 40 Belgian companies. In each company, we have studied two on-going innovation projects (one planning project, one development project). Crossfunctional communication behaviours at the R&D/marketing interface have been measured by means of mailed structured questionnaires. Three-hundred and eighty-six questionnaires have been returned. The data analyses show that there are four underlying information dimensions, i.e. the perceived relevance, the perceived comprehensibility, the perceived novelty and the perceived credibility of information. We also discuss some contingency variables (function of the message receiver, stage in the innovation process) that might moderate the impact of these dimensions. It will be shown that the interaction between source and receiver has a significant impact on the perceived credibility, the perceived comprehensibility and the perceived novelty of the received information.  相似文献   
158.
Negotiation support using the Graph Model for Conflict Resolution   总被引:1,自引:1,他引:0  
The Graph Model for Conflict Resolution is a flexible methodology for systematically studying strategic conflicts in the real world, and is therefore a natural tool for negotiation support. The basic definitions underlying the graph model are reviewed, and the techniques for analysis and interpretation are discussed. The modeling and analysis of a case study, an international trade negotiation concerning the export of Canadian softwood lumber to the United States, are used to demonstrate the practical application of the Graph Model for Conflict Resolution as a negotiation support tool. The modeling and analysis is carried out using the GMCR software system. The ability of the Graph Model for Conflict Resolution to provide insights and advice to negotiators is emphasized.  相似文献   
159.
The deregulation of foreign banks in Japan, although corresponding in broad outline to world-wide trends, has diverged substantially in many particulars from patterns seen elsewhere. It has tended to be excruciatingly slow and piecemeal and to have been of minimal benefit to foreign banks. A review of this process leads to the conclusion that these characteristics result from organisational and political-bureaucratic factors inherent to the Japanese style of government which is, in turn, partially a reflection of Japanese culture. Although these non-economic factors have influenced the specific pattern of change, its overall direction appears to have been consistent with the broader national interest.The authors wish to acknowledge financial support from the Social Science and Humanities Research Council of Canada, the Florsheimer Center for Policy Studies, and the Krueger Center for Financial Research.  相似文献   
160.
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