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   42368篇
  免费   667篇
  国内免费   1篇
财政金融   7551篇
工业经济   2607篇
计划管理   6473篇
经济学   9573篇
综合类   838篇
运输经济   213篇
旅游经济   506篇
贸易经济   8317篇
农业经济   1384篇
经济概况   4891篇
信息产业经济   45篇
邮电经济   638篇
  2021年   169篇
  2020年   303篇
  2019年   493篇
  2018年   2774篇
  2017年   2569篇
  2016年   1750篇
  2015年   440篇
  2014年   735篇
  2013年   2804篇
  2012年   1246篇
  2011年   2752篇
  2010年   2481篇
  2009年   2309篇
  2008年   2251篇
  2007年   2492篇
  2006年   703篇
  2005年   916篇
  2004年   1007篇
  2003年   1045篇
  2002年   803篇
  2001年   549篇
  2000年   537篇
  1999年   461篇
  1998年   463篇
  1997年   461篇
  1996年   459篇
  1995年   383篇
  1994年   398篇
  1993年   434篇
  1992年   435篇
  1991年   415篇
  1990年   347篇
  1989年   318篇
  1988年   305篇
  1987年   312篇
  1986年   332篇
  1985年   493篇
  1984年   451篇
  1983年   419篇
  1982年   388篇
  1981年   365篇
  1980年   403篇
  1979年   334篇
  1978年   281篇
  1977年   272篇
  1976年   209篇
  1975年   251篇
  1974年   198篇
  1973年   189篇
  1972年   134篇
排序方式: 共有10000条查询结果,搜索用时 843 毫秒
991.
We examine the performance of 160 pharmaceutical acquisitions from 1994 to 2001 and find evidence that on average acquirers realize significant positive returns. These returns are positively correlated with prior acquirer access to information about the research and development activities at target firms and a superior negotiating position. A unique Desperation Index is employed to determine the current status of a firm's internal productivity. We find that firms experiencing declines in internal productivity or which are more desperate are more likely to engage in an outsourcing-type acquisition in an effort to replenish their research pipelines.  相似文献   
992.
993.
994.
The purpose of this paper is to investigate factors that potentially influence earnings-management policy with reference to the Anglo-American and Euro-Continental accounting models. Canada and France, respectively, belong to those different socio-economic environments. Earnings-management practices detected in those countries are expected to be affected by specific socio-economic features of the Anglo-American and the Euro-Continental environments. We explain earnings-management practices by incentives suggested in the literature to reveal which motives are prominent within each environment.We tested our earnings-management motives (EMM) model using appropriate panel-estimation techniques over 1674 Canadian and 1470 French firm-year observations. Our results provide evidence that incentives for earnings management for French firms are specifically linked to contractual debt costs and effective tax rate. However, Canadian firms show specific incentives matched with a dynamic capital market. Issuing equity is a strong motive for earnings management in Canadian firms.  相似文献   
995.
We examine the acquisition and joint venture strategies of U.S. banks from 1980 to 1998 to diversify into non-banking sectors. We find that the market responds favorably to both types of expansions, with the gains being shared between acquiring banks and their targets and venture banks and their non-bank partners, respectively. Acquisitions expose acquiring banks to significant increases in nonsystematic, market, and total risk, while joint ventures result in significant decreases in the nonsystematic and total risk measures for participating banks. Our results suggest that product-market expansions, in general, provide U.S. banks with value-enhancing opportunities, and that joint ventures may improve both the return and risk characteristics of the partner banks.  相似文献   
996.
The loan market is a hybrid between a public and a private market, comprised of financial institutions with access to private information about borrowing firms. We test whether this is reflected in informationally efficient price formation in the loan market vis-a-vis the equity markets, and reject this private information hypothesis. We also reject a liquidity hypothesis which suggests that equity markets always lead loan markets, despite bank lenders' access to private information, because of greater liquidity in equity markets. We further test, and reject, an asymmetric price reaction hypothesis that states that loan returns are more sensitive to negative information whereas equity returns respond symmetrically to both positive and negative information. We find evidence most consistent with an integrated markets hypothesis that suggests that both the equity and syndicated bank loan markets are highly integrated such that information flows freely across markets. This is particularly true when the equity market makers are also loan syndicate members.   相似文献   
997.
What do we know about technology and rights? This article provides a fairly comprehensive overview of current issues regarding this topic. We explore and analyse a wide spectrum of rights that are challenged in this current era of technological convergence. We use the United States Bill of Rights as an example of the vulnerability of legal protections for rights against particular political and technological changes in this post 9-11 climate. New streams of rights acting as a safeguard against further incursions of technology into civil liberties are explored. We also address intellectual property rights and international trends in copyright, patent and trademark laws. We question whether these issues of technology and rights have a place in current technological literacy scenarios.  相似文献   
998.
The adoption of sophisticated supply chain innovations by trading partners in global channels of distribution is often limited by the institutional context of the international transaction. In particular, the regulatory, normative, and cultural-cognitive elements of institutional environments around the world can enhance or inhibit the ability of trading partners to craft the contractual, ownership, and social elements of institutional arrangements required by an innovation. Because supply chain innovations often require costly, new investments and activity sets, firms may be reluctant to participate in an innovation unless a new institutional arrangement can be crafted to provide adequate safeguards and guarantees. A conceptual model is developed to explain the role of institutions in the successful deployment of supply chain innovations in global marketing channels.  相似文献   
999.
1000.
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