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   198篇
  免费   4篇
  国内免费   1篇
财政金融   19篇
工业经济   7篇
计划管理   36篇
经济学   61篇
综合类   3篇
运输经济   1篇
贸易经济   41篇
农业经济   18篇
经济概况   17篇
  2023年   1篇
  2022年   2篇
  2021年   3篇
  2020年   3篇
  2019年   6篇
  2018年   6篇
  2017年   5篇
  2016年   8篇
  2015年   4篇
  2014年   11篇
  2013年   26篇
  2012年   5篇
  2011年   5篇
  2010年   7篇
  2009年   3篇
  2008年   8篇
  2007年   7篇
  2006年   11篇
  2005年   2篇
  2004年   13篇
  2003年   3篇
  2002年   6篇
  2001年   3篇
  2000年   2篇
  1999年   2篇
  1998年   4篇
  1997年   7篇
  1996年   6篇
  1995年   2篇
  1994年   3篇
  1993年   2篇
  1992年   3篇
  1991年   4篇
  1990年   1篇
  1989年   4篇
  1988年   2篇
  1987年   1篇
  1985年   1篇
  1984年   4篇
  1983年   1篇
  1981年   2篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1977年   1篇
排序方式: 共有203条查询结果,搜索用时 0 毫秒
41.
The complex process through which agricultural research stimulates innovation and achieves policy goals has commonly been treated as a ‘black box’ in the scientific literature. Statistical correlations between measured expenditure and impacts, where satisfactorily established, have mostly led to details of the research and innovation system being ignored. However, identifying and exploring causal chains of impact propagation can strengthen agricultural innovation. IMPRESA investigated impact mechanisms for research‐based innovations in six case studies using a Participatory Impact Pathway Assessment approach. Several suggestions result for improving performance and public support for agricultural research. Planning for impact is needed at the design phase of research so that expected advances in technology and their consequences can be explored. At that stage and throughout the research process, soft social skills are required to promote uptake. Greater impact can be achieved through the close involvement of key public and private sector stakeholders, using stakeholder mapping as a supporting tool. There is a strong argument for the close involvement of relevant social scientists and professional facilitators from the design phase of research through to its ultimate impacts. Funding frameworks and the specification of calls for tenders would function more effectively by giving more flexibility for stakeholder engagement.  相似文献   
42.
43.
Business-to-business firms are increasingly focusing on building long-term partnering relationships with key customers. Salespeople are often responsible for managing these relationships. To be effective as relationship managers, salespeople need to be embedded in both their firm’s and customers’ organizations. They need to have extensive knowledge of their customers’ business and also know and be able to leverage their firm’s resources to develop offerings tailored to their customers’ needs. Their companies and sales managers need to use different approaches to manage and support salespeople in this new role. In this paper, we examine some issues affecting the interfaces between elements of the embedded sales force and suggest some directions for future research and methods for examining these issues.  相似文献   
44.
The last 30 years have witnessed the emergence of a new pattern of urban development in France, called the periurban belt. It is defined as a belt outside the city occupied both by households and farmers. We develop a residential model in which households commuting to an employment center may choose to live with farmers in this mixed belt because they value the rural amenities created by farming activities. Both types of agents compete on the land market and the equilibrium conditions allow us to obtain an analytical solution and to provide some insights about the robustness of the periurban form against decreases in commuting costs. Finally, the model is calibrated on French data.  相似文献   
45.
INCOME INEQUALITY AND POVERTY: SOME PROBLEMS   总被引:1,自引:0,他引:1  
In an important recent book dealing with the measurement of income inequality with particular reference to poverty,1 Prof. N. Kakwani derives several poverty indices, investigates the effect of negative income tax schemes with the help of those indices and gives a numerical illustration based on Malaysian data.
The aim of this note is to point out some logical flaws in his argument. Some of the ideas expressed in the part of his book we are concerned with have been disseminated for some time now2 and referred to in subsequent literature;3 yet their shortcomings do not seem to have attracted anyone's attention. The introductory section gives a concise presentation of the relevant part of Kakwani's contribution. The next two sections deal with some problems with his approach.  相似文献   
46.
A flow model is used to identify the causes for rising unemployment in France between 1978 and 1990. Two flow equations are estimated as functions of exogenous factors such as aggregate demand, factor costs, structural shifts and long-term factors and then used in simulations for the level of unemployment. It is shown that the main reason for high unemployment in France is a slow down in the demand for labour due to high labour and energy costs in the early 1980s and to tight aggregate demand over the whole period.Change in the labour supply have had an increasing impact in recent years.  相似文献   
47.
48.
QUANTIFYING ABSOLUTE POVERTY IN THE DEVELOPING WORLD   总被引:3,自引:0,他引:3  
We estimate that in 1985 about one in five persons in the developing world lived in poverty, judged by the standards of the poorest countries. This rises to one in three at a common, more generous, poverty line. The aggregate consumption short-fall of the poorest fifth is about one half of one percent of world consumption, while that of the poorest third is a further one percent. The shape of the distribution of consumption suggests that aggregate poverty would fall fairly rapidly if moderate growth in average consumption levels can be sustained, and the poor share at least proportionally in that growth. However, it would take only small adverse shifts in the world distribution of consumption to eliminate the gains to the poor from growth.  相似文献   
49.
This paper introduces non-parametric estimators for upper and lower tail dependence whose confidence intervals are obtained with a bootstrap method. We call these estimators ‘naïve estimators’ as they represent a discretization of Joe's formulae linking copulas to tail dependence. We apply the methodology to an empirical data set composed of three composite indexes for the three Tigers (Thailand, Malaysia and Indonesia). The extremes show a dependence structure which is symmetric for the Thai and Malaysian markets and asymmetric for the Thai and Indonesian markets and for the Malaysian and the Indonesian markets. Using these results we estimate the copula (which belongs to the Student or Archimedean copula families) for each pair of markets by two methods. Finally, we provide risk measurements using the best copula associated with each pair of markets.  相似文献   
50.
The success of a vehicle on the market depends on its price, reliability, and attractiveness; for the latter, innovations are the key elements in the differentiation from competitors. Managing the processes of selecting and integrating innovation projects into vehicle projects is therefore crucial. This article presents a management tool that aims at managing the interplay between innovation projects and vehicle projects. The objectives are to increase and optimize the amount and value of innovation projects integrated into vehicle projects. The tool, called “Profilor,” is based on the concept of intrusiveness, which is presented from a theoretical and empirical point of view.  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