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   11279篇
  免费   301篇
  国内免费   1篇
财政金融   2088篇
工业经济   928篇
计划管理   1987篇
经济学   2523篇
综合类   230篇
运输经济   59篇
旅游经济   145篇
贸易经济   1833篇
农业经济   455篇
经济概况   1279篇
信息产业经济   1篇
邮电经济   53篇
  2020年   136篇
  2019年   170篇
  2018年   220篇
  2017年   258篇
  2016年   246篇
  2015年   159篇
  2014年   247篇
  2013年   1053篇
  2012年   352篇
  2011年   336篇
  2010年   326篇
  2009年   382篇
  2008年   337篇
  2007年   322篇
  2006年   264篇
  2005年   232篇
  2004年   236篇
  2003年   236篇
  2002年   198篇
  2001年   238篇
  2000年   237篇
  1999年   205篇
  1998年   204篇
  1997年   228篇
  1996年   197篇
  1995年   200篇
  1994年   174篇
  1993年   189篇
  1992年   214篇
  1991年   210篇
  1990年   164篇
  1989年   164篇
  1988年   138篇
  1987年   129篇
  1986年   131篇
  1985年   196篇
  1984年   178篇
  1983年   185篇
  1982年   152篇
  1981年   191篇
  1980年   155篇
  1979年   174篇
  1978年   145篇
  1977年   141篇
  1976年   136篇
  1975年   115篇
  1974年   109篇
  1973年   95篇
  1972年   71篇
  1971年   62篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Textbooks and articles on farm management stress the importance of the management capacity of the farmer with respect to his farm results. However, explicit definitions together with an elaboration of this concept are hard to find. In this article, aspects of management capacity are grouped into: (1) personal aspects, consisting of fanner's drives and motivations, fanner's abilities and capabilities and his biographical facts such as age and education; and (2) aspects of the decision-making process, consisting of practices and procedures with respect to planning, implementation and control of decisions at the farm. Empirical studies on the role of management capacity in relation to farm results are reviewed. Frontier production functions are widely used in recent literature to estimate technical and economic efficiency of farms. However, in explaining differences in efficiency most studies do not go further than adding a biographical variabk (e.g., level of education). This study concludes that a next step would be to include aspects of the decision-making process. Longitudinal on-farm observations, which give possibilities for studying the dynamic aspects of the decision-making, are suggested to further analyze the concept of management capacity.  相似文献   
992.
We've all heard stories about U.S. exporters who shipped goods, then were not paid—or importers who bought goods from abroad, then found them not up to quality or received them too late. These problems are often due to too much concentration on the glamorous side of international trade and too little attention to the practical.  相似文献   
993.
This paper explores how an exchange rate devaluation affects the current account in a sticky-price inter-temporal optimizing model. The main issue addressed is how the features of international pricing affect the response of the current account. When prices are all set in the producer's currencies, the effect of a devaluation on the current account depends on the conventional Marshall–Lerner conditions. This is fundamentally an a-temporal condition (depending on the elasticity of substitution between home and foreign goods). However, when prices are all set in consumer's currencies, the response of the current account depends upon the size of the inter-temporal elasticity of substitution of consumption across time periods. This represents an inter-temporal condition. When pricing-to-market is partial, the effect of devaluation on the current account depends on the strength of the a-temporal elasticity relative to the inter-temporal elasticity.  相似文献   
994.
995.
996.
997.
998.
999.
Factors influencing the adoption of MV (modern variety) rices and fertilizer in the Tarai of southeastern Nepal were examined through multivariate probit (varietal adoption) and tobit (fertilizer adoption and use rates) regression models. This study reaffirms the finding that the adoption of modern rice technology is highest where irrigation exists. Tenure status and access to credit were significantly related to varietal adoption but family and farm size and the operator's education were not. Similar variables, in addition to fertilizer price, influenced the probability of fertilizer adoption and use rates on rice.  相似文献   
1000.
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