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   6467篇
  免费   188篇
财政金融   876篇
工业经济   311篇
计划管理   1076篇
经济学   1210篇
综合类   52篇
运输经济   45篇
旅游经济   59篇
贸易经济   972篇
农业经济   331篇
经济概况   1719篇
信息产业经济   1篇
邮电经济   3篇
  2023年   38篇
  2021年   55篇
  2020年   86篇
  2019年   128篇
  2018年   163篇
  2017年   171篇
  2016年   161篇
  2015年   101篇
  2014年   218篇
  2013年   616篇
  2012年   241篇
  2011年   271篇
  2010年   204篇
  2009年   196篇
  2008年   210篇
  2007年   194篇
  2006年   188篇
  2005年   143篇
  2004年   135篇
  2003年   134篇
  2002年   114篇
  2001年   96篇
  2000年   91篇
  1999年   73篇
  1998年   77篇
  1997年   86篇
  1996年   76篇
  1995年   65篇
  1994年   72篇
  1993年   77篇
  1992年   80篇
  1991年   63篇
  1990年   76篇
  1989年   75篇
  1988年   78篇
  1987年   60篇
  1986年   54篇
  1985年   94篇
  1984年   83篇
  1983年   65篇
  1982年   85篇
  1981年   61篇
  1980年   58篇
  1979年   48篇
  1978年   57篇
  1977年   46篇
  1976年   47篇
  1975年   48篇
  1974年   31篇
  1973年   39篇
排序方式: 共有6655条查询结果,搜索用时 156 毫秒
41.
42.
In One destiny: Our common future in Africa the author relates, in popular fashion, a series of incidents which convinced him that the basic difference between black and white in South Africa is cultural deep‐seated and the cause of underdevelopment and conflict He develops a circular argument in which world‐view is taken as the root of perceptions, values and activities. The effects of experience and economic and political factors are given secondary importance. This argument cannot accommodate social change and differentiation, and the author tends to concentrate on perceptions and events which he finds morally unacceptable. He gives an unbalanced assessment and an ethnocentric interpretation of African life. Possible reasons for this type of argument are explored and an alternative which takes its departure from the interaction between experience and perception is offered  相似文献   
43.
44.
Abstract
Technology analysis is a new technomanagerial discipline that provides common frameworks for analysing individual technologies and their relationships to each other. It is used here to probe the development of a particular technology, namely that of permanent magnets.
The paper traces the development of permanent magnets over the past decade and explores possible future improvements in performance parameters. The strength of magnets (i.e. energy product as expressed in kilo Joules per cubic metre) has increased from approximately 40 in the 1930s to approximately 400 at present.
Future developments will be constrained by a barrier which seems to exist at approximately 525 kilo Joules per cubic metre. However this is viewed as a barrier that can be transcended and not as an immutable limit. It therefore signifies a possible breakthrough zone.
S-curve theory leads analysts to speculate about a possible breakthrough during the five year period leading up to 1995. At that date magnetic strengths of 600+ kilo Joules per cubic metre could be aimed for.
Increased magnetic strength will improve the performance parameters of all technologies utilising magnets, unleash new magnetic based technologies and threaten many traditional areas in the fields of matter processing, transporting and storing, energy processing, and information processing and storing.
These effects will cascade through the entire technological landscape creating new markets and destroying others. The article gives an overview of these impacts on the technological landscape.  相似文献   
45.
46.
47.
Constructivist Negotiation Ethics   总被引:1,自引:0,他引:1  
The success of Discourse Ethics is premised on the discovery and use of shared values. If this is true what type of negotiation style, especially when used in an intercultural setting, is best suited to make use of shared values. Research focusing on moral arguments between Germans and Americans uncovered an array of shared values. But the existence of shared values, by itself, was not an adequate predictor of a negotiation's success. What did prove to be a predictor of success was the use of a Constructivist style of negotiation by both parties.  相似文献   
48.
This paper presents an expert assessment of the present state of cooperation of Ukraine and Russia in the innovation sphere, outlines its main stages and analyzes the quality of the process of formation of legislative framework in state regulation of innovation-oriented transformations in the economy of the two countries. A comparative study is made and a quantitative estimate of the level of innovation activities in industrial production and the degree of innovation shifts in the technological structure of manufacturing in Russia and Ukraine is given.  相似文献   
49.
50.
This paper examines the efficiency of commercial banks in Namibia using the standard econometric frontier approach. Although two aspects of efficiency (scale and scope) receive our attention, the emphasis is on the latter which pertains to whether a firm produces as efficiently as it possibly can, given its size. Our results indicate that substantial economies of scale exist in commercial banking in Namibia. This will tend to suggest that commercial banks in Namibia can increase their efficiency by increasing their current scale of operation. The results for scope economies show that the current level of input combination does not make for maximum efficiency as sufficient scope exists for a more efficient combination of inputs. We believe this will reduce operating costs in the industry and stimulate efficiency.  相似文献   
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