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   134931篇
  免费   3822篇
  国内免费   1篇
财政金融   25498篇
工业经济   11574篇
计划管理   21499篇
经济学   28843篇
综合类   1448篇
运输经济   956篇
旅游经济   2488篇
贸易经济   23366篇
农业经济   6068篇
经济概况   16765篇
信息产业经济   7篇
邮电经济   242篇
  2021年   824篇
  2020年   1612篇
  2019年   2372篇
  2018年   2276篇
  2017年   2453篇
  2016年   2654篇
  2015年   2068篇
  2014年   3391篇
  2013年   15226篇
  2012年   4168篇
  2011年   4095篇
  2010年   3662篇
  2009年   4285篇
  2008年   3863篇
  2007年   3191篇
  2006年   3543篇
  2005年   3543篇
  2004年   3093篇
  2003年   2863篇
  2002年   2837篇
  2001年   2603篇
  2000年   2514篇
  1999年   2417篇
  1998年   2287篇
  1997年   2337篇
  1996年   2211篇
  1995年   1997篇
  1994年   2013篇
  1993年   1968篇
  1992年   2026篇
  1991年   1914篇
  1990年   1811篇
  1989年   1665篇
  1988年   1597篇
  1987年   1593篇
  1986年   1685篇
  1985年   2440篇
  1984年   2313篇
  1983年   2122篇
  1982年   1988篇
  1981年   1923篇
  1980年   1889篇
  1979年   1820篇
  1978年   1626篇
  1977年   1623篇
  1976年   1378篇
  1975年   1278篇
  1974年   1187篇
  1973年   1185篇
  1972年   900篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
171.
172.
Despite the prevalence of elective business ethics courses, little research has sought to explain and predict why some students enroll in these courses and while others do not. Using the theory of planned behavior (Ajzen and Madden, 1986) as a theoretical foundation, 178 graduate students in Ireland were surveyed about their intention to sign up for an elective ethics class. Their behavior was measured two months later. The results reveal the power of the theory of planned behavior to explain and predict who takes elective ethics classes.Donna M. Randall is an associate professor and chair in the Department of Management and Systems at Washington State University. Her research interests include business ethics, organizational commitment, and reproductive risk in the work place. Her work has appeared inJournal of Business Ethics, Decision Sciences, Academy of Management Review, Journal of Vocational Behavior, Journal of Business Research, and others.  相似文献   
173.
174.
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   
175.
Objections to the teaching of business ethics   总被引:1,自引:0,他引:1  
  相似文献   
176.
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   
177.
178.
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   
179.
180.
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   
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