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   31177篇
  免费   599篇
财政金融   5709篇
工业经济   2296篇
计划管理   5294篇
经济学   7018篇
综合类   334篇
运输经济   193篇
旅游经济   519篇
贸易经济   4822篇
农业经济   1474篇
经济概况   4043篇
邮电经济   74篇
  2021年   184篇
  2020年   302篇
  2019年   424篇
  2018年   576篇
  2017年   587篇
  2016年   546篇
  2015年   405篇
  2014年   624篇
  2013年   3049篇
  2012年   849篇
  2011年   903篇
  2010年   714篇
  2009年   876篇
  2008年   914篇
  2007年   815篇
  2006年   756篇
  2005年   704篇
  2004年   712篇
  2003年   696篇
  2002年   653篇
  2001年   649篇
  2000年   644篇
  1999年   551篇
  1998年   560篇
  1997年   533篇
  1996年   532篇
  1995年   473篇
  1994年   518篇
  1993年   542篇
  1992年   500篇
  1991年   527篇
  1990年   483篇
  1989年   399篇
  1988年   410篇
  1987年   410篇
  1986年   425篇
  1985年   597篇
  1984年   555篇
  1983年   563篇
  1982年   532篇
  1981年   475篇
  1980年   462篇
  1979年   470篇
  1978年   401篇
  1977年   363篇
  1976年   292篇
  1975年   280篇
  1974年   263篇
  1973年   249篇
  1972年   203篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
Planning food services for a campus setting   总被引:1,自引:0,他引:1  
Providing appropriate food services in a campus setting is increasingly important due to more demanding customers and because clients have less time to go off-campus when they need to eat. Using a university campus as an example, this research looks at customer satisfaction with existing food services and explores various methods for determining where to locate new facilities. This campus currently has great needs for additional food services, and it is shown clearly where additional food services are required. Also, the methods used are compared in terms of their effectiveness in finding the solution.  相似文献   
82.
Supply chain management (SCM) is implemented by integrating corporate functions using business processes within and across companies. Several process‐oriented frameworks for SCM have been proposed but only two of these provide sufficient detail to enable implementation. We evaluate the Supply‐Chain Operations Reference (SCOR) framework and The Global Supply Chain Forum (GSCF) framework using four criteria and identify their relative strengths and weaknesses.  相似文献   
83.
84.
J Kosterlitz 《National journal》1986,18(27):1666-1669
  相似文献   
85.
Trade and growth     
The National Economic Association introduced the W. Arthur Lewis Distinguished Lecture series in December 1985 at the Allied Social Sciences Association meetings in New York City. The Lewis Lecture is named in honor of the 1979 Nobel Laureate in Economics, much of whose research has been devoted to the problem of Third World economic development. In the same spirit, the Lewis Lectures are intended to explore the themes of global inequality. Third World poverty, and prospects and possibilities for change. The inaugural Lewis address was delivered by Lance Taylor, professor of economics and nutrition at the Massachusetts Institute of Technology. Taylor, an immensely creative economist, has led contemporary development economists in the analysis of disparities in the structural relationships between Northern (that is, more-developed) and Southern (that is, less-developed) countries. Taylor’s subject matter, “Trade and Growth,” constituted both a provocative assessment of the stale of knowledge in this area and a compelling indictment of the insights offered by conventional economics. Taylor’s address, presented December 28, 1985, provides a sterling beginning to what promises to be an important lecture series.  相似文献   
86.
87.
Employment,schooling and productivity growth   总被引:1,自引:1,他引:0  
Summary This paper presents an empirical analysis of labour demand and labour productivity growth in The Netherlands. Assuming an aggregate production function with as factors capital and 3 types of labour, distinguished by educational attainment, cost minimization leads to a set of 3 labour demand relations to be estimated on time series data. Using the estimates and the implied elasticities, aggregate labour productivity growth is decomposed into factor substitution, autonomous factors, labour time shortening, economies of scale, utilization rates and the increased educational level of the working population. The contributions of substitution, utilization rates and education appear to be substantial, notably in the seventies.

List of symbols

Variables a i Efficiency index of skill leveli - C production - h i working-time index for skill leveli - g i steady-state growth rate of skill leveli - K capital stock - L i employment volume of skill leveli - L i * desired level of labour skill leveli - p output price - p * desired output price - s i * long-run static labour shares in the production value - p k rental price of capital - P index of total factor productivity - P l index of labour productivity - u i utilization rate of skill leveli - u k utilization rate of capital - w i wage rate for skill leveli - y production volume - y yij Hicks partial elasticities of complementarity - i steady-state cost share of skill leveli - k Bk steady-state cost share of capital - f lf highest level price index in cost function nesting - g 4 intermediate level price index in cost function nesting - h 4 lowest level price index in cost function nesting - i steady-state relative wage share of skill leveli - ij Allen partial elasticities of substitution Parameters d i l adjustment speed of skill leveli - d p price adjustment speed - M mark-up on marginal costs - scale elasticity of production - i distribution parameter in cost function,i = 3, g - i distribution parameter in cost function,i = k, h - i distribution parameter in cost function,i =1, 2 - i autonomous labour productivity growth for skill leveli - i cost share of skill level in base year - f production cost index in base year - i hours elasticity in labour efficiency index - group elasticity of substitution betweenL 3 and (K, (L 1,L 2)) - g Og group elasticity of substitution betweenK and (L 1,L 2) - h 6h group elasticity of substitution betweenL 1 andL 2 We would like to thank B. Downey, G.M.M. Gelauff, A. Nieuwenhuis, J.M.M. Ritzen, J.C. Siebrand and an unknown referee for helpful comments on earlier drafts.  相似文献   
88.
The various agricultural practices employed in eastern Maputaland are described.

Agricultural strategies utilized in Maputaland are low in productivity but aim to minimize risk. The area is marginal for agriculture as soils are sandy and rainfall unreliable. Insects and plant diseases accentuate the problem. Infrastructure is lacking in the area. Traditional agricultural systems predominate.

Farming in the area is generally of a subsistence nature and can be divided into gardening, swamp farming and field cropping. Steps towards modernization of agriculture must take into account all existing constraints.  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