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   24068篇
  免费   445篇
  国内免费   1篇
财政金融   4590篇
工业经济   1706篇
计划管理   3560篇
经济学   5289篇
综合类   380篇
运输经济   175篇
旅游经济   432篇
贸易经济   3640篇
农业经济   1253篇
经济概况   3432篇
信息产业经济   1篇
邮电经济   56篇
  2021年   133篇
  2020年   244篇
  2019年   407篇
  2018年   492篇
  2017年   502篇
  2016年   513篇
  2015年   287篇
  2014年   527篇
  2013年   2449篇
  2012年   712篇
  2011年   797篇
  2010年   666篇
  2009年   746篇
  2008年   721篇
  2007年   626篇
  2006年   568篇
  2005年   479篇
  2004年   508篇
  2003年   452篇
  2002年   505篇
  2001年   440篇
  2000年   457篇
  1999年   437篇
  1998年   406篇
  1997年   417篇
  1996年   411篇
  1995年   357篇
  1994年   367篇
  1993年   399篇
  1992年   408篇
  1991年   401篇
  1990年   329篇
  1989年   301篇
  1988年   291篇
  1987年   302篇
  1986年   309篇
  1985年   468篇
  1984年   433篇
  1983年   400篇
  1982年   376篇
  1981年   345篇
  1980年   390篇
  1979年   318篇
  1978年   270篇
  1977年   256篇
  1976年   198篇
  1975年   242篇
  1974年   193篇
  1973年   188篇
  1972年   133篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This paper examines the theoretical and empirical justifications for replacing the special bad-debt reserve deduction currently accorded to thrifts under federal tax law with a mortgage interest tax credit. It presents the background to the recommendations of the President's Commission on Housing that such a change be employed as a short-term tax incentive to mortgage investment and compares a system in which all mortgage investors received the bad-debt deduction with one in which all receive a tax credit. The conclusion is that the credit is superior to the deduction on theoretical grounds although it is difficult to predict with certainty the impacts of such a change in tax policy on total mortgage investment.  相似文献   
992.
993.
Based on an organizational adaptation framework, this study examines the influence of three environmental dimensions–munificence, stability, and complexity–on top management team turnover. In addition to investigating the direct influence of these environmental dimensions, indirect effects through firm performance and strategic change are also examined; the indirect effect of environmental complexity through demographic heterogeneity is also studied. Path analysis indicates that the direct effects of the three environmental dimensions predominate. Indirect effects were nonsignificant except for the effect of instability and munificence through strategic change. By expanding the team turnover context to include environmental and strategic dimensions, in addition to previously examined performance and heterogeneity factors, this study enhances our understanding of managerial turnover as a form of organizational adaptation.  相似文献   
994.
Insider trading as a signal of private information   总被引:7,自引:0,他引:7  
There is substantial evidence that insider trading is presentaround corporate announcements and that this insider tradingis motivated by private information. Using real estate investmenttrusts that choose to reappraise themselves as our sample, weestablish that the appraisals contain information, but findno market response to the public announcement of this informationin these appraisals. We consider two possible explanations forthis inconsistency: the first that the appraisal informationis not highlighted in earnings reports and hence remains unobserved;and the second that insiders trade on the appraisal informationin the time that elapses between the appraisal and its publicannouncement We find strong support for the second hypothesis,with insiders buying (selling) after they receive favorable(unfavorable) appraisal news, especially for negative appraisals.We also find that positive (negative) appraisals and net insiderbuying (selling) elicit significant positive (negative) abnormalreturns during the appraisal period  相似文献   
995.
How marketability affects security prices is one of the most important issues in finance. We derive a simple analytical upper bound on the value of marketability using option-pricing theory. We show that discounts for lack of marketability can potentially be large even when the illiquidity period is very short. This analysis also provides a benchmark for assessing the potential costs of exchange rules and regulatory requirements restricting the ability of investors to trade when desired. Furthermore, these results provide new insights into the relation between discounts for lack of marketability and the length of the marketability restriction.  相似文献   
996.
997.
We analyze the rationale for limit order trading. Use of limit orders involves two risks: 1) an adverse information event can trigger an undesirable execution, and 2) favorable news can result in a desirable execution not being obtained. On the other hand, a paucity of limit orders can result in accentuated short-term price fluctuations that compensate a limit order trader. Our empirical tests suggest that trading via limit orders dominates trading via market orders for market participants with relatively well balanced portfolios, and that placing a network of buy and sell limit orders as a pure trading strategy is profitable.  相似文献   
998.
The role of moral intensity in moral judgments: An empirical investigation   总被引:7,自引:1,他引:6  
Jones (1991) has proposed an issue-contingent model of ethical decision making by individuals in organizations. The distinguishing feature of the issue was identified as its moral intensity, which determines the moral imperative in the situation. In this study, we adapted three scenarios from the literature in order to examine the issue-contingent model. Findings, based on a student sample, suggest that (1) the perceived and actual dimensions of moral intensity often differed; (2) perceived moral intensity variables, in the aggregate, significantly affected an individual's moral judgments; and (3) some dimensions of moral intensity (namely, perceived social consensus and perceived magnitude of consequences) mattered more than others.Sara A. Morris is Assistant Professor of Management at Old Dominion University. Her current research examines corporate codes of ethics, attitudes about corporate social responsibility, and the relationship between corporate social and financial performance.Robert A. McDonald is a doctoral candidate in organizational studies at the State University of New York at Albany. His research interests include ethical decision making, characteristics of moral dilemmas, and leadership power and influence tactics.  相似文献   
999.
This is a study of tenure choice, housing demand and mobility in the submarkets of the Helsinki metropolitan area. The empirical analysis is based on data on households, type of tenure, housing characteristics and mobility for a sample of Helsinki residents at the end of 1980s. According to our results the probability of owning is affected not only by user costs of alternative tenure forms but also by permanent income and demographic variables. Results from the tenure specific housing demand models indicate that there are non-neutralities in the housing markets. Permanent income elasticities of housing demand are clearly positive in owner-occupied sector and systematically higher than in the rented sector. The demand for owner-occupied housing depends very strongly on the age of the household head. User cost per housing unit affects housing demand negatively in both tenure forms. Effective demand is greater in private housing sector. The results suggest that owner-occupied living is preferred with heavily subsidized households the least likely to move. In the rental sector, where the probability of moving is higher, it is also true that the most heavily subsidized households are the least likely to move.  相似文献   
1000.
Abstract. Using the important case of multi-period investing between a safe asset with a low mean return and an equity basket with a higher total return but a riskier one, this analysis demonstrates that the relevant stochastic programming involves irreducibly recursive variational relations. The "direct" Lagrange-Chow procedure is related to the derivatives of the Bellman "indirect"'algorithms and shown to require essentially the same computations save only for standard integrations or taking of first derivatives. To demonstrate that the comparison is unchanged when a vector of control variables must be optimized in a many-period stochastic scenario, the problem is solved for a rentier to both decide how much to save in each period and how much to put of each period's investment into risky securities.  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