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   140159篇
  免费   3990篇
  国内免费   14篇
财政金融   26352篇
工业经济   11823篇
计划管理   22438篇
经济学   30271篇
综合类   1570篇
运输经济   1014篇
旅游经济   2561篇
贸易经济   24327篇
农业经济   6300篇
经济概况   17187篇
信息产业经济   11篇
邮电经济   309篇
  2021年   894篇
  2020年   1692篇
  2019年   2483篇
  2018年   2423篇
  2017年   2657篇
  2016年   2810篇
  2015年   2184篇
  2014年   3539篇
  2013年   15772篇
  2012年   4335篇
  2011年   4345篇
  2010年   3886篇
  2009年   4496篇
  2008年   4084篇
  2007年   3426篇
  2006年   3722篇
  2005年   3754篇
  2004年   3253篇
  2003年   3033篇
  2002年   2979篇
  2001年   2718篇
  2000年   2624篇
  1999年   2522篇
  1998年   2379篇
  1997年   2426篇
  1996年   2256篇
  1995年   2050篇
  1994年   2071篇
  1993年   2025篇
  1992年   2077篇
  1991年   1980篇
  1990年   1853篇
  1989年   1704篇
  1988年   1636篇
  1987年   1634篇
  1986年   1732篇
  1985年   2525篇
  1984年   2385篇
  1983年   2183篇
  1982年   2035篇
  1981年   1962篇
  1980年   1933篇
  1979年   1873篇
  1978年   1651篇
  1977年   1643篇
  1976年   1413篇
  1975年   1284篇
  1974年   1200篇
  1973年   1195篇
  1972年   903篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
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   
162.
Objections to the teaching of business ethics   总被引:1,自引:0,他引:1  
  相似文献   
163.
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   
164.
165.
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   
166.
167.
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   
168.
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   
169.
Recent evidence suggests that many small to medium sized enterprises (SMEs) in the UK experience difficulty growing from the start-up phase into larger well established firms. This research uses survey data from UK instruments, printing and software SMEs to explore the attitudes of SME managers towards growth, to identify the strategies they pursue to achieve growth, and to establish the main factors they perceive to be limiting their growth. We find that although most managers profess to value growth and follow expansionary strategies, the main limits on the growth of SMEs are the intensity of competition stemming from the recession, and the inability or unwillingness of management to deal with the increased administrative burden arising from expansion.  相似文献   
170.
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