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   141531篇
  免费   3898篇
  国内免费   2篇
财政金融   26782篇
工业经济   11703篇
计划管理   22701篇
经济学   30812篇
综合类   1553篇
运输经济   975篇
旅游经济   2504篇
贸易经济   24170篇
农业经济   6260篇
经济概况   17668篇
信息产业经济   9篇
邮电经济   294篇
  2021年   862篇
  2020年   1639篇
  2019年   2420篇
  2018年   2570篇
  2017年   2724篇
  2016年   2856篇
  2015年   2128篇
  2014年   3451篇
  2013年   15394篇
  2012年   4331篇
  2011年   4449篇
  2010年   3919篇
  2009年   4515篇
  2008年   4102篇
  2007年   3503篇
  2006年   3658篇
  2005年   3672篇
  2004年   3232篇
  2003年   3027篇
  2002年   2959篇
  2001年   2748篇
  2000年   2704篇
  1999年   2592篇
  1998年   2391篇
  1997年   2464篇
  1996年   2321篇
  1995年   2107篇
  1994年   2109篇
  1993年   2135篇
  1992年   2197篇
  1991年   2092篇
  1990年   1938篇
  1989年   1761篇
  1988年   1715篇
  1987年   1696篇
  1986年   1790篇
  1985年   2563篇
  1984年   2454篇
  1983年   2255篇
  1982年   2090篇
  1981年   2030篇
  1980年   2005篇
  1979年   1915篇
  1978年   1703篇
  1977年   1663篇
  1976年   1417篇
  1975年   1312篇
  1974年   1207篇
  1973年   1195篇
  1972年   907篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
181.
182.
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   
183.
Objections to the teaching of business ethics   总被引:1,自引:0,他引:1  
  相似文献   
184.
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   
185.
186.
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   
187.
Asset market hangovers and economic growth: the OECD during 1984-93   总被引:1,自引:0,他引:1  
Asses prices and investment were unusually weak throughout theindustrial world during the early 1990s. This paper highlightsthis stylized fact, and connects it with another: in most ofthe industrial world, asset markets boomed for several yearsbefore collapsing around 1989. The paper suggests that assetmarket bubbles during the late 1980s may have left the industrialworld with an 'asset market hangover' in the early 1990s, inthe form of sluggish asset markets and investment. Empiricalsupport for this hypothesis is provided based on cross-countrydata for equity and real estate markets in most industrial countries.We suggest that financial market developments not justifiedby fundamentals can substantially affect real activity.  相似文献   
188.
189.
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   
190.
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   
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