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   138028篇
  免费   3931篇
  国内免费   1篇
财政金融   26051篇
工业经济   11763篇
计划管理   22139篇
经济学   29655篇
综合类   1458篇
运输经济   985篇
旅游经济   2525篇
贸易经济   23786篇
农业经济   6189篇
经济概况   17156篇
信息产业经济   8篇
邮电经济   245篇
  2021年   853篇
  2020年   1675篇
  2019年   2429篇
  2018年   2385篇
  2017年   2569篇
  2016年   2734篇
  2015年   2132篇
  2014年   3458篇
  2013年   15570篇
  2012年   4257篇
  2011年   4211篇
  2010年   3778篇
  2009年   4422篇
  2008年   3964篇
  2007年   3278篇
  2006年   3638篇
  2005年   3610篇
  2004年   3146篇
  2003年   2931篇
  2002年   2882篇
  2001年   2688篇
  2000年   2656篇
  1999年   2511篇
  1998年   2369篇
  1997年   2395篇
  1996年   2248篇
  1995年   2059篇
  1994年   2061篇
  1993年   2039篇
  1992年   2073篇
  1991年   1982篇
  1990年   1838篇
  1989年   1698篇
  1988年   1629篇
  1987年   1637篇
  1986年   1715篇
  1985年   2481篇
  1984年   2353篇
  1983年   2144篇
  1982年   2019篇
  1981年   1948篇
  1980年   1922篇
  1979年   1839篇
  1978年   1642篇
  1977年   1629篇
  1976年   1389篇
  1975年   1281篇
  1974年   1200篇
  1973年   1193篇
  1972年   905篇
排序方式: 共有10000条查询结果,搜索用时 390 毫秒
181.
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   
182.
Objections to the teaching of business ethics   总被引:1,自引:0,他引:1  
  相似文献   
183.
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   
184.
185.
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   
186.
187.
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   
188.
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   
189.
190.
Consumers act out roles throughout their lives. Marketers assist in this role playing by providing the wardrobes, props, and sets in the form of products and services. They also help people understand acceptable role behavior by portraying roles in their communication programs. Consumers assume new roles as they age. This article is designed to enhance understanding of the often-ignored roles that accompany aging and provides examples of and suggestions for effective marketing for these role transitions.  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