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   14703篇
  免费   410篇
  国内免费   13篇
财政金融   2620篇
工业经济   1133篇
计划管理   2443篇
经济学   3131篇
综合类   312篇
运输经济   110篇
旅游经济   304篇
贸易经济   2678篇
农业经济   825篇
经济概况   1545篇
邮电经济   25篇
  2021年   90篇
  2020年   161篇
  2019年   238篇
  2018年   293篇
  2017年   336篇
  2016年   317篇
  2015年   218篇
  2014年   351篇
  2013年   1433篇
  2012年   381篇
  2011年   414篇
  2010年   399篇
  2009年   427篇
  2008年   477篇
  2007年   456篇
  2006年   379篇
  2005年   362篇
  2004年   333篇
  2003年   341篇
  2002年   317篇
  2001年   302篇
  2000年   304篇
  1999年   279篇
  1998年   276篇
  1997年   279篇
  1996年   292篇
  1995年   255篇
  1994年   237篇
  1993年   270篇
  1992年   249篇
  1991年   245篇
  1990年   222篇
  1989年   198篇
  1988年   154篇
  1987年   189篇
  1986年   188篇
  1985年   278篇
  1984年   288篇
  1983年   287篇
  1982年   248篇
  1981年   244篇
  1980年   213篇
  1979年   216篇
  1978年   164篇
  1977年   176篇
  1976年   140篇
  1975年   117篇
  1974年   110篇
  1973年   98篇
  1972年   71篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
101.
A rancorous debate continues to rage over the use of affirmative action policies in college admissions. This article uses a simple signaling model to evaluate the labor market impacts of four types of affirmative action admissions policies. RacE-based preferential policies and policies guaranteeing admission based on high school academic rank may induce discrimination in labor markets when there exists strong heterogeneity in socioeconomic disadvantage within the underrepresented minority group. Under such conditions, it may also be difficult to realize ethnic diversity with disadvantagE-based preferential policies. The article argues instead for affirmative action policies emphasizing intensive college preparation for targeted groups.  相似文献   
102.
This paper investigates whether governments can change market structures through interventions. We study the effects of four political events over the life cycle of the market for daily newspapers in the Netherlands. We find that policy measures meant to lower entry barriers in an expanding industry created new entry and increased survival chances for potential entrants and incumbent newspapers. Exit barrier enhancing policies to reduce concentration tendencies have not been successful.  相似文献   
103.
We extend the research on postinjury employment by estimating productivity losses for workers with permanent partial disabilities (PPDs) in the first three years after injury. Our method distinguishes between productivity losses attributed to spells of work absence versus reduced earnings during spells of employment. The method is applied to data for 800 Ontario workers with PPDs. The results document large productivity losses persisting at least three years after injury, with different loss patterns for workers returning to stable versus unstable employment. Human capital investments or job accommodations can reduce productivity losses, but the significant determinants of losses differ for the stable versus unstable employment groups.  相似文献   
104.
105.
106.
This study investigates the intervening effects of budgetary participation and job-relevant information on the relationship between budget emphasis and job satisfaction. It proposes that budgetary participation and job-relevant information are endogenous to budget emphasis. Using the path analytical technique and based on a sample of 152 senior managers, the study found that budget emphasis has an insignificant direct effect on job satisfaction, but a strong indirect effect through job-relevant information and budgetary participation. The results also indicate that job-relevant information has an intervening effect on the relationship between participation and job satisfaction.  相似文献   
107.
108.
Bayesian multiple imputation (MI) has become a highly useful paradigm for handling missing values in many settings. In this paper, I compare Bayesian MI with other methods – maximum likelihood, in particular—and point out some of its unique features. One key aspect of MI, the separation of the imputation phase from the analysis phase, can be advantageous in settings where the models underlying the two phases do not agree.  相似文献   
109.
The theory articulated in this paper suggests that the desire to reduce demand and competitive uncertainty are two separate, important motives for alliance formation. Taking this as a starting point, we predict the configuration of horizontal alliances that we might expect to observe within an industry when firms experience these uncertainties to different degrees. An empirical test of this theory using data from the global auto industry yields results consistent with the view (1) that alliances are a device for reducing both the uncertainties that arise from unpredictable demand conditions and those that arise from competitive interdependence, and (2) that variation of demand uncertainty and competitive uncertainty across firms explains differentials in both the intensity and structure of their horizontal alliance activity.  相似文献   
110.
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