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   1510篇
  免费   59篇
财政金融   243篇
工业经济   219篇
计划管理   361篇
经济学   323篇
综合类   28篇
运输经济   12篇
旅游经济   15篇
贸易经济   232篇
农业经济   23篇
经济概况   103篇
邮电经济   10篇
  2021年   9篇
  2020年   13篇
  2019年   13篇
  2018年   38篇
  2017年   26篇
  2016年   33篇
  2015年   20篇
  2014年   37篇
  2013年   190篇
  2012年   43篇
  2011年   50篇
  2010年   47篇
  2009年   45篇
  2008年   45篇
  2007年   43篇
  2006年   37篇
  2005年   42篇
  2004年   34篇
  2003年   48篇
  2002年   60篇
  2001年   42篇
  2000年   33篇
  1999年   26篇
  1998年   36篇
  1997年   32篇
  1996年   38篇
  1995年   22篇
  1994年   41篇
  1993年   25篇
  1992年   18篇
  1991年   16篇
  1990年   17篇
  1989年   12篇
  1988年   14篇
  1987年   15篇
  1986年   21篇
  1985年   22篇
  1984年   32篇
  1983年   31篇
  1982年   19篇
  1981年   24篇
  1980年   17篇
  1979年   25篇
  1978年   28篇
  1977年   24篇
  1976年   9篇
  1975年   11篇
  1974年   16篇
  1973年   6篇
  1972年   5篇
排序方式: 共有1569条查询结果,搜索用时 31 毫秒
991.
992.
993.
994.
995.
Features editors in 50 UK newspapers and magazines completed a mail questionnaire concerning their use of charity infotorials, ie human interest press stories based on materials developedandsubmittedbycharityemployees. The research focused on publishers' reasons for carrying this type of article, editorial policy regarding materials submitted by charities, perceptions of the quality of the copy received, and the determinants of publishers' levels of satisfaction with outcomes. A clear dichotomy emerged between publishing firms that viewed infotorials mainly as a means for gaining a competitive advantage over titles produced by other businesses, and those that adopted a more altruistic approach to the publication of stories with a charity‐related theme. Copyright © 2000 Henry Stewart Publications  相似文献   
996.
We examine local strong rationality (LSR) in multivariate models with both forward-looking expectations and predetermined variables. Given hypothetical common knowledge restrictions that the dynamics will be close to those of a specified minimal state variable solution, we obtain eductive stability conditions for the solution to be LSR. In the saddlepoint stable case the saddle-path solution is LSR provided the model is structurally homogeneous across agents. However, the eductive stability conditions are strictly more demanding when heterogeneity is present, as can be expected in multisectoral models. Heterogeneity is thus a potentially important source of instability even in the saddlepoint stable case.  相似文献   
997.
Towards the end of the 1990s, a perplexing situation occurred in two large North American cities. In Toronto, Ontario, and Los Angeles, California, conservative political forces undertook to restructure the system of urban governance. While initiated by conservatives in both cases, in Toronto the result was consolidation; in Los Angeles secessionism is rampant. In both cases the political debate on amalgamation and secession is tied in with discourses on size, efficiency and form of urban government. In both cases, also, the shift from government to governance has been a central theme. This article investigates how local governance has changed in these two cities by comparing historical traditions of governance. Each city has a specific set of external relationships with other geographical and political scales and a set of characteristic internal contradictions. Internally, Los Angeles' tradition of splintered governance stands in contrast to Toronto's metropolitan governance model. Amalgamation and secession have been introduced as strategic options of governance restructuring in both cities in the late 1990s. Both (projected and realized) scalar changes of governance processes and institutions have been accompanied and characterized by social struggles and widespread political debate. The article outlines these debates and discusses the respective political alliances which have formed in both urban regions on the issue of amalgamation/secession. Vers la fin des années 1990, une situation troublante se produisit dans deux grandes villes d'Amérique du Nord: Toronto, en Ontario, et Los Angeles, en Californie. Les conservateurs y avaient entrepris de restructurer le système de gouvernance urbaine. Bien que l'initiative revienne aux mêmes forces politiques dans les deux cas, le résultat fut à Toronto une unification et à Los Angeles un sécessionnisme rampant. Dans les deux villes, le débat politique sur l'amalgamation et la sécession est lié aux discours sur la taille, l'efficacité et la forme d'un gouvernement urbain. De même, dans les deux villes, le passage de gouvernement à gouvernance s'est trouvé au centre des propos. Cet article recherche comment la gouvernance locale a évolué dans ces deux villes en comparant les traditions historiques. Chaque ville présente, d'une part, un ensemble particulier de relations extérieures avec d'autres échelles géographiques et politiques et, d'autre part, un ensemble de contradictions intérieures caractéristiques. Sur le plan intérieur, la tradition de gouvernance éclatée de Los Angeles s'oppose au modèle de gouvernance métropolitaine de Toronto. Vers la fin des années 1990, amalgamation et sécession ont été présentées dans les deux villes comme des options stratégiques pour la restructuration de la gouvernance. Les changements d'échelle –à la fois prévus et réalisés – concernant les processus et institutions de gouvernance ont été accompagnés et caractérisés par des conflits sociaux et un débat politique général. L'article expose ces discussions et aborde les alliances politiques respectives qui se sont formées dans les deux zones urbaines sur la question d'amalgamation/sécession.  相似文献   
998.
High tech organizations confront dual demands of exploring new products/processes and exploiting existing products/processes. Research shows that ambidextrous organizations can better manage these dual demands, but our understanding of the antecedents that lead to ambidexterity is still emerging. In addition, previous research has taken a piecemeal approach to understand ambidexterity and does not fully consider its multilevel nature. This research takes a multilevel perspective and argues that a competency in ambidexterity involves three capabilities at different organizational levels: decision risk (strategic level), structural differentiation (project level), and contextual alignment (meso level). After correcting for endogeneity we empirically examine the relationship between these antecedents and ambidexterity competency by collecting multi-level data from 34 high tech business units and 110 exploration and exploitation R&D projects. The results indicate that decision risk and contextual alignment affect ambidexterity competency for high tech organizations. Structural differentiation does not affect ambidexterity competency but has mixed effects on R&D project performance.  相似文献   
999.
1000.
We examine financial analysts' earnings revisions after self-tender offers. Consistent with the assertions of earlier studies that self-tender offers signal future performance, financial analysts significantly increase their forecasts of earnings for firms that announce self-tender offers. However, the revisions differ based on the method chosen to repurchase shares. For Dutch auction offers, analysts significantly revise their estimates of short-term earnings only. For fixed-price tender offers, analysts increase both short-term and long-term earnings estimates. Also, long-term earnings revisions are significantly related to announcement-period abnormal returns for fixed-price tender offers, which suggests that fixed-price self-tender offers convey more positive information about future earnings than do Dutch auction offers.  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