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   16953篇
  免费   390篇
  国内免费   23篇
财政金融   3111篇
工业经济   1140篇
计划管理   2771篇
经济学   3992篇
综合类   530篇
运输经济   185篇
旅游经济   299篇
贸易经济   2699篇
农业经济   762篇
经济概况   1863篇
邮电经济   14篇
  2023年   120篇
  2021年   141篇
  2020年   290篇
  2019年   376篇
  2018年   445篇
  2017年   536篇
  2016年   449篇
  2015年   306篇
  2014年   437篇
  2013年   2059篇
  2012年   538篇
  2011年   566篇
  2010年   525篇
  2009年   492篇
  2008年   511篇
  2007年   428篇
  2006年   302篇
  2005年   320篇
  2004年   306篇
  2003年   313篇
  2002年   313篇
  2001年   319篇
  2000年   349篇
  1999年   268篇
  1998年   264篇
  1997年   277篇
  1996年   239篇
  1995年   238篇
  1994年   246篇
  1993年   283篇
  1992年   257篇
  1991年   239篇
  1990年   220篇
  1989年   183篇
  1988年   177篇
  1987年   168篇
  1986年   185篇
  1985年   246篇
  1984年   305篇
  1983年   255篇
  1982年   245篇
  1981年   265篇
  1980年   233篇
  1979年   242篇
  1978年   198篇
  1977年   189篇
  1976年   172篇
  1975年   135篇
  1974年   138篇
  1973年   127篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
O. D. Anderson 《Metrika》1978,25(1):241-245
Summary A very simple deduction of a recently treated inequality is presented and some variations on this proof, drawing together various properties, are discussed. Closure of moving average processes undermultiplication is also mentioned.  相似文献   
82.
Abstract. In this paper we study the first–order efficiency and asymptotic normality of the maximum likelihood estimator obtained from dependent observations. Our conditions are weaker than usual, in that we do not require convergences in probability to be uniform or third–order derivatives to exist.
The paper builds on Witting and Nolle's result concerning the asymptotic normality of the maximum likelihood estimator obtained from independent and identically distributed observations, and on a martingale theorem by McLeish.  相似文献   
83.
84.
This paper discusses the impact of a redistribution of current income from the White to the Black population on the distribution of sectoral output, and total employment by means of a semi‐closed input‐output model.

The results show that a redistribution of current income towards Black households — which no doubt will have positive social and political repercussions — has a non‐negative effect on GDP and a definite positive effect on the performance of sectors with a high private consumption expenditure component, as well as on total employment.  相似文献   

85.
86.
Consumer susceptibility to reference group influence has been demonstrated for certain products and buying situations. This article reports a study designed to determine if reference group influence varies between consumers classified as situationally-oriented and dispositionally-oriented. Results indicate a considerable difference between the two groups. Independence Health Plan  相似文献   
87.
The development of a standardized student evaluation form   总被引:1,自引:0,他引:1  
The original purpose of student evaluations was to provide feedback to the instructor to improve his/her teaching. However, the use of student evaluations in assessing promotion and tenure decisions is becoming increasingly apparent. Given that students represent one valuable source of evaluation data, the task involves gathering the information so as not to bias or influence the results. Thus, the objectives of this report are to discuss the methodology and pitfalls in the construction of a data collection instrument, and produce a “model” student evaluation form that may serve as the basis for establishing validity by having the academic community put it to the test.  相似文献   
88.
Previous studies of the driving times of shopping center patrons have not examined the effect of limited access highways. This study analyzed the impact of interstate highways on the driving times of 204 shoppers at three medium-sized regional shopping centers. Those shoppers indicating usage of interstate highways to reach their shopping destinations were significantly more likely to incur travel times greater than fifteen and twenty minutes than those not using the available interstate roads. In predicting the drawing power of these shopping centers, factors besides mass were found to be useful. These include square footage of shopping goods, stores, and number of parking places.  相似文献   
89.
90.
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