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   38014篇
  免费   826篇
  国内免费   2篇
财政金融   7491篇
工业经济   3152篇
计划管理   6409篇
经济学   8484篇
综合类   472篇
运输经济   249篇
旅游经济   599篇
贸易经济   6166篇
农业经济   1934篇
经济概况   3793篇
信息产业经济   3篇
邮电经济   90篇
  2020年   412篇
  2019年   534篇
  2018年   612篇
  2017年   716篇
  2016年   691篇
  2015年   488篇
  2014年   737篇
  2013年   3865篇
  2012年   994篇
  2011年   1177篇
  2010年   961篇
  2009年   1149篇
  2008年   994篇
  2007年   1058篇
  2006年   974篇
  2005年   843篇
  2004年   806篇
  2003年   873篇
  2002年   843篇
  2001年   812篇
  2000年   821篇
  1999年   701篇
  1998年   760篇
  1997年   750篇
  1996年   694篇
  1995年   651篇
  1994年   646篇
  1993年   634篇
  1992年   704篇
  1991年   688篇
  1990年   561篇
  1989年   472篇
  1988年   488篇
  1987年   483篇
  1986年   523篇
  1985年   763篇
  1984年   778篇
  1983年   690篇
  1982年   679篇
  1981年   699篇
  1980年   632篇
  1979年   640篇
  1978年   504篇
  1977年   411篇
  1976年   372篇
  1975年   377篇
  1974年   325篇
  1973年   303篇
  1972年   217篇
  1971年   211篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
992.
The rising cost of health care threatens the very fabric of American society. With Americans widely practicing unhealthy life habits, such as using tobacco, eating imprudently and leading a sedentary lifestyle, they are at risk for health conditions that threaten to make them long-term liabilities to their employer. This article tells how one U.S. employer chooses to focus its workforce on wellness.  相似文献   
993.
This paper analyzes reporting errors in crime data to see how they impact econometric estimates, particularly of the key relationship between inequality and crime. Criminal victimization surveys of 140,000 respondents in 37 industrial, transition and developing countries are used. Comparing the crimes experienced by these respondents with those reported to the police, non-random and mean-reverting errors are apparent. Time-varying factors affect the propensity of victims to report crimes to the police, undermining the use of country-specific fixed effects as a means of dealing with measurement error in official crime data. These errors substantially attenuate both cross-sectional and panel estimates of the partial correlation between inequality and crime.  相似文献   
994.
Portfolio Choice in the Presence of Background Risk   总被引:2,自引:0,他引:2  
In this paper, we focus on how the presence of background risks – from sources such as labour and entrepreneurial income – influences portfolio allocations. This interaction is explored in a theoretical model that is calibrated using cross-sectional data from a variety of sources. The model is shown to be consistent with some but not all aspects of cross-sectional observations of portfolio holdings. The paper also provides a survey of the extensive theoretical and empirical literature on portfolio choice.  相似文献   
995.
996.
A group of multiemployer trust funds in Michigan has formed a coalition that eventually will offer its members an integrated managed health care program. As the first step toward this goal, the coalition recently implemented a managed pharmaceutical program.  相似文献   
997.
This paper contains a theoretical and empirical model of the physician firm. The utility maximizing physician chooses the number of hours of labor to supply and the mix between patient visits and time per visit. Theory suggests that a serious specification error may occur if one estimates the labor supply curve and patient demand curve without simultaneously estimating the mix between patient visits and time per visit. A Chi-Square specification test reveals that this “triage” model statistically dominates the simple supply/demand model. Estimation results indicate relevant backward-bending labor and negatively sloped service supply functions.  相似文献   
998.
This article presents the empirical Bayes method for estimation of the transition probabilities of a generalized finite stationary Markov chain whose ith state is a multi-way contingency table. We use a log-linear model to describe the relationship between factors in each state. The prior knowledge about the main effects and interactions will be described by a conjugate prior. Following the Bayesian paradigm, the Bayes and empirical Bayes estimators relative to various loss functions are obtained. These procedures are illustrated by a real example. Finally, asymptotic normality of the empirical Bayes estimators are established.  相似文献   
999.
ABSTRACT In this study, we present the concept of resourceful sensemaking as an extension of Weick's sensemaking theory. Resourceful sensemaking extends Weick's theory by carefully examining the influence of the lifeworld on organizational sensemaking practices. Lifeworld factors that affect organizational sensemaking are brought out in a dialectical method wherein a working definition of the resourceful sensemaking concept is compared with the sensemaking practices of an administrative group. We then show how this dialectical method can help develop a more robust formulation of the resourceful sensemaking concept. The paper ends by discussing the strengths and shortcomings of the concept and suggesting directions for future organizational sensemaking research.  相似文献   
1000.
It is argued that the explosive growth experienced in much of the World since the middle of the 19th Century is due to the exploitation and use of fossil fuels which, in turn, was made possible by capital good innovations that enabled this source of energy to be used effectively. Economic growth is viewed as the outcome autocatalytic co-evolution of energy use and the application of new knowledge associated with energy use. It is argued that models of economic growth should be built from innovation diffusion processes, unfolding in history, rather than from a timeless aggregate production function. A simple ‘evolutionary macroeconomic’ model of economic growth is developed and tested using almost two centuries of British data. The empirical findings strongly support the hypothesis that growth has been due to the presence of a ‘super-radical innovation diffusion process’ following the industrial deployment of fossil fuels on a large scale in the 19th Century. Also, the evidence suggests that large and sustained movements in energy prices have had a very significant long term role to play.  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