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   18876篇
  免费   480篇
  国内免费   3篇
财政金融   3848篇
工业经济   1258篇
计划管理   3314篇
经济学   4082篇
综合类   213篇
运输经济   82篇
旅游经济   257篇
贸易经济   3383篇
农业经济   841篇
经济概况   1883篇
邮电经济   198篇
  2020年   207篇
  2019年   272篇
  2018年   402篇
  2017年   449篇
  2016年   451篇
  2015年   299篇
  2014年   437篇
  2013年   1758篇
  2012年   565篇
  2011年   544篇
  2010年   499篇
  2009年   526篇
  2008年   500篇
  2007年   469篇
  2006年   444篇
  2005年   427篇
  2004年   341篇
  2003年   395篇
  2002年   375篇
  2001年   365篇
  2000年   392篇
  1999年   319篇
  1998年   333篇
  1997年   334篇
  1996年   326篇
  1995年   321篇
  1994年   322篇
  1993年   324篇
  1992年   348篇
  1991年   350篇
  1990年   292篇
  1989年   231篇
  1988年   250篇
  1987年   237篇
  1986年   267篇
  1985年   376篇
  1984年   357篇
  1983年   311篇
  1982年   329篇
  1981年   349篇
  1980年   294篇
  1979年   289篇
  1978年   268篇
  1977年   197篇
  1976年   204篇
  1975年   212篇
  1974年   157篇
  1973年   179篇
  1972年   134篇
  1971年   125篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
This paper employs the optimality conditions for expected utility and mean-variance portfolio problems to examine the ambiguities associated with the security market line criterion both at a point in time and through time. At a point in time, we show that the security market line criterion can be irrelevant, even in meanvariance economies. In a multiperiod setting, we show that the analysis of performance based on portfolio choice is inconsistent with the analysis based on return generating models. Empirical work suggests that the inconsistency can lead to dramatically different estimates of a security's required return.  相似文献   
82.
83.
Whilst the local multiplier impacts of the annual operation of universities has been the subject of intensive research, the economic impacts of capital construction projects have been almost completely ignored. This paper presents the results of detailed analysis of capital projects at Lancaster University in 1993-The reasons for the radically different annual operation and construction multipliers estimated in the Lancaster study are examined. Despite the smaller size of construction multipliers it is argued that it is a serious mistake to estimate local construction multipliers by making simplifying assumptions on the size of the key parameters in the multiplier equations.  相似文献   
84.
85.
86.
87.
Endogenous Timing in Trade Policy Games: Should Governments Use Countervailing Duties? - Trade policy under oligopoly is analysed in two multistage games with endogenous timing of trade policy. At the beginning of the games, the domestic and foreign governments choose whether to set trade policy at stage one or two. It is shown that in the subgame perfect equilibrium of both games, the domestic government will set its tariff (and production subsidy) at stage one and the foreign government its export subsidy at stage two. The domestic country commits not to use a countervailing duty in both games, and both countries are better off than when they set trade policy simultaneously.  相似文献   
88.
89.
abstract We examine how cognitive style, as measured by the MBTI, affects strategic decision outcomes. Executives participated in a simulated strategic decision making environment that allowed controlled collection of decision outcomes, including manager decisiveness, decision quality, and perceived effectiveness. We found that iNtuiting/Thinking managers used their intuition to make cognitive leaps based on objective information to craft more decisions of higher quality than other managers. In contrast, Sensing/Feeling types used time to seek socially acceptable decisions, which led to the lowest number of decisions and the lowest perceived effectiveness of all. We found no effect on decisiveness or perceived effectiveness based on a manager's preference for Perceiving or Judging. However, we found that others perceived Extraverted managers as being more effective than Introverted managers when, in fact, the Extraverts were no more decisive than Introverts. Thus, cognitive style influences actual decision outcomes as well as how others perceive one's decision performance.  相似文献   
90.
Burn or bury? A social cost comparison of final waste disposal methods   总被引:1,自引:0,他引:1  
This paper evaluates the two well-known final waste disposal methods, incineration and landfilling. In particular we compare the social cost of two best-available technologies using a point estimate based on private and environmental cost data for the Netherlands. Not only does our comparison allow for Waste-to-Energy incineration plants but for landfills as well. The data provide support for the widespread policy preference for incineration over landfilling only if the analysis is restricted to environmental costs alone and includes savings of both energy and material recovery. Gross private costs, however, are so much higher for incineration, that landfilling is the social cost minimizing option at the margin even in a densely populated country such as the Netherlands. Furthermore, we show that our result generalizes to other European countries and probably to the USA. Implications for waste policy are discussed as well. Proper treatment of and energy recovery from landfills seem to be the most important targets for waste policy. Finally, WTE plants are a very expensive way to save on climate change emissions.  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