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   133404篇
  免费   3812篇
  国内免费   1篇
财政金融   25299篇
工业经济   11503篇
计划管理   21353篇
经济学   28475篇
综合类   1431篇
运输经济   950篇
旅游经济   2481篇
贸易经济   22769篇
农业经济   6051篇
经济概况   16662篇
信息产业经济   8篇
邮电经济   235篇
  2021年   819篇
  2020年   1603篇
  2019年   2360篇
  2018年   2258篇
  2017年   2422篇
  2016年   2635篇
  2015年   2066篇
  2014年   3375篇
  2013年   15179篇
  2012年   4159篇
  2011年   4056篇
  2010年   3628篇
  2009年   4256篇
  2008年   3813篇
  2007年   3146篇
  2006年   3524篇
  2005年   3521篇
  2004年   3058篇
  2003年   2832篇
  2002年   2810篇
  2001年   2581篇
  2000年   2503篇
  1999年   2409篇
  1998年   2250篇
  1997年   2298篇
  1996年   2170篇
  1995年   1964篇
  1994年   1982篇
  1993年   1958篇
  1992年   2010篇
  1991年   1890篇
  1990年   1792篇
  1989年   1663篇
  1988年   1609篇
  1987年   1605篇
  1986年   1675篇
  1985年   2421篇
  1984年   2292篇
  1983年   2102篇
  1982年   1956篇
  1981年   1878篇
  1980年   1824篇
  1979年   1732篇
  1978年   1581篇
  1977年   1578篇
  1976年   1343篇
  1975年   1233篇
  1974年   1156篇
  1973年   1147篇
  1972年   860篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
181.
182.
Abstract The research question in the present article can be phrased in the following way: what are the elements which influence the perception of the utility of information received from another function? A field study research has been conducted in 40 Belgian companies. In each company, we have studied two on-going innovation projects (one planning project, one development project). Crossfunctional communication behaviours at the R&D/marketing interface have been measured by means of mailed structured questionnaires. Three-hundred and eighty-six questionnaires have been returned. The data analyses show that there are four underlying information dimensions, i.e. the perceived relevance, the perceived comprehensibility, the perceived novelty and the perceived credibility of information. We also discuss some contingency variables (function of the message receiver, stage in the innovation process) that might moderate the impact of these dimensions. It will be shown that the interaction between source and receiver has a significant impact on the perceived credibility, the perceived comprehensibility and the perceived novelty of the received information.  相似文献   
183.
Negotiation support using the Graph Model for Conflict Resolution   总被引:1,自引:1,他引:0  
The Graph Model for Conflict Resolution is a flexible methodology for systematically studying strategic conflicts in the real world, and is therefore a natural tool for negotiation support. The basic definitions underlying the graph model are reviewed, and the techniques for analysis and interpretation are discussed. The modeling and analysis of a case study, an international trade negotiation concerning the export of Canadian softwood lumber to the United States, are used to demonstrate the practical application of the Graph Model for Conflict Resolution as a negotiation support tool. The modeling and analysis is carried out using the GMCR software system. The ability of the Graph Model for Conflict Resolution to provide insights and advice to negotiators is emphasized.  相似文献   
184.
185.
Consumers act out roles throughout their lives. Marketers assist in this role playing by providing the wardrobes, props, and sets in the form of products and services. They also help people understand acceptable role behavior by portraying roles in their communication programs. Consumers assume new roles as they age. This article is designed to enhance understanding of the often-ignored roles that accompany aging and provides examples of and suggestions for effective marketing for these role transitions.  相似文献   
186.
The paper extends Manning's model on education and balanced growth to include labour immigration. Each immigration unit is assumed to consist of one skilled worker and some unskilled members. The optimal immigration policy which maximizes the per capita steady-state consumption of the host country is derived. We show that optimal immigration policy can reduce the steady-state skilled labour ratio. More interesting still, contrary to the widespread belief that immigration of skilled workers hurts local skilled workers, it is the unskilled local workers whose interests are threatened by optimal immigration policy.  相似文献   
187.
The introduction of traffic management schemes has been one response of the National Parks to the problem of ever-increasing car-borne visitors and the consequent damage caused to the rural environment. By reviewing these schemes and by determining and explaining attitudes towards one particular traffic management experiment, the paper aims to deduce lessons for future policy. The analysis, based on two visitor surveys, suggests that the likelihood of success is improved when schemes are integrated, containing both ‘carrot’ and ‘stick’ elements. Since public perceptions are also found to be pivotal to its success, appropriate marketing of a scheme is vital. The paper concludes, however, that to achieve the fundamental objective of greater accessibility with less mobility, a more wide-ranging marketing effort is required intended to engender a sea change in attitude towards both the car and public transport.  相似文献   
188.
189.
190.
Linear and nonlinear Granger causality tests are used to examine the dynamic relation between daily Dow Jones stock returns and percentage changes in New York Stock Exchange trading volume. We find evidence of significant bidirectional nonlinear causality between returns and volume. We also examine whether the nonlinear causality from volume to returns can be explained by volume serving as a proxy for information flow in the stochastic process generating stock return variance as suggested by Clark's (1973) latent common-factor model. After controlling for volatility persistence in returns, we continue to find evidence of nonlinear causality from volume to returns.  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