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   6870篇
  免费   148篇
财政金融   1323篇
工业经济   612篇
计划管理   1155篇
经济学   1451篇
综合类   72篇
运输经济   37篇
旅游经济   103篇
贸易经济   1136篇
农业经济   357篇
经济概况   768篇
信息产业经济   1篇
邮电经济   3篇
  2021年   48篇
  2020年   83篇
  2019年   117篇
  2018年   149篇
  2017年   143篇
  2016年   158篇
  2015年   81篇
  2014年   155篇
  2013年   679篇
  2012年   208篇
  2011年   246篇
  2010年   191篇
  2009年   229篇
  2008年   190篇
  2007年   185篇
  2006年   157篇
  2005年   172篇
  2004年   143篇
  2003年   148篇
  2002年   130篇
  2001年   160篇
  2000年   155篇
  1999年   140篇
  1998年   126篇
  1997年   115篇
  1996年   117篇
  1995年   112篇
  1994年   97篇
  1993年   113篇
  1992年   118篇
  1991年   101篇
  1990年   105篇
  1989年   101篇
  1988年   110篇
  1987年   89篇
  1986年   106篇
  1985年   114篇
  1984年   109篇
  1983年   102篇
  1982年   108篇
  1981年   102篇
  1980年   106篇
  1979年   81篇
  1978年   102篇
  1977年   73篇
  1976年   71篇
  1975年   56篇
  1974年   50篇
  1973年   50篇
  1972年   42篇
排序方式: 共有7018条查询结果,搜索用时 14 毫秒
51.
Surveys of beach visitor motivation in Ireland, Wales, Turkey and the USA indicate that beach awards play an insignificant role in motivation to visit beaches. However, a number of criteria closely identified with awards, notably cleanliness and water quality, are revealed to be very important. Aesthetic and emotional factors such as scenic setting and general ambience, and practical concerns such as proximity and range of activities available are much more important than beach awards in attracting visitors to beaches. The merits of beach awards are critically reviewed and it is concluded that any benefits that might accrue are in areas other than attracting visitors.  相似文献   
52.
53.
Several paradigms can be used to analyse multiple-criteria decision-making problems. Of these goal programming is probably the most widely used one, at least in management science. Goal programming seems to offer considerable potential for application to multiple-criteria problems in farm planning. However, its applications in agricultural economics have been few and far between. Even these attempts seem to suffer from some serious misconceptions. In this paper an effort is made to explain the structure of a goal programming model by deriving it from the familiar paradigm of linear programming. This is done to put the potential usefulness of goal programming and its relationship to linear programming in perspective, and to encourage further applications to multiple-criteria decision-making in farm planning.  相似文献   
54.
The general acceptance of multiple use as a desirable management goal has not been matched by practical guidelines to implement and achieve that goal. As Pearse [5] rightly noted, the most serious obstacles to applying multiple use principles are usually the lack of appropriate data and lack of established methodology. This study did not face prohibitive problems in valuing extra-market goods, but as with all multiple use studies, it did face the problem of applying the standard economic model of the multi-product firm. It is hoped this particular empirical application of the model contributes generally to the provision of guidelines for multiple use management.  相似文献   
55.
56.
This study quantified technical efficiency and the determinants of observed technical inefficiency of sawmills in Nigeria. A two-stage sampling technique was used to select 170 sawmillers in Ondo and Osun states, while questionnaire was used to obtain data from them between October and December 2003. The stochastic frontier approach was used to estimate technical efficiency of both small- and medium-scale sawmills, while the ordinary least square (OLS) regression analysis was used to estimate the determinants of the observed technical inefficiency. Empirical results indicate that medium-scale sawmillers are more efficient than their small-scale counterparts. However, both groups of sawmillers in Nigeria have potentials to expand their output.  相似文献   
57.
58.
59.
60.
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