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   24254篇
  免费   502篇
财政金融   4338篇
工业经济   1728篇
计划管理   4164篇
经济学   5751篇
综合类   262篇
运输经济   186篇
旅游经济   359篇
贸易经济   3993篇
农业经济   1191篇
经济概况   2706篇
信息产业经济   3篇
邮电经济   75篇
  2023年   122篇
  2021年   158篇
  2020年   303篇
  2019年   479篇
  2018年   521篇
  2017年   563篇
  2016年   543篇
  2015年   368篇
  2014年   602篇
  2013年   2571篇
  2012年   821篇
  2011年   843篇
  2010年   731篇
  2009年   861篇
  2008年   771篇
  2007年   675篇
  2006年   643篇
  2005年   568篇
  2004年   498篇
  2003年   511篇
  2002年   456篇
  2001年   535篇
  2000年   484篇
  1999年   435篇
  1998年   495篇
  1997年   444篇
  1996年   447篇
  1995年   377篇
  1994年   383篇
  1993年   379篇
  1992年   385篇
  1991年   396篇
  1990年   367篇
  1989年   273篇
  1988年   278篇
  1987年   290篇
  1986年   266篇
  1985年   384篇
  1984年   377篇
  1983年   352篇
  1982年   300篇
  1981年   309篇
  1980年   312篇
  1979年   293篇
  1978年   248篇
  1977年   198篇
  1976年   192篇
  1975年   174篇
  1974年   158篇
  1973年   156篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
The number of firms using alliances as part of their corporate venturing or market entry strategies has surged over the past decade. Three common reasons cited for pursuing alliances are technology convergence, market access and alliance partners' complementary resources. This paper contrasts the alliance strategies of HP and IBM, two major competitors in electronic services (i.e. Internet-based 'e- service') businesses, using the Familiarity Matrix as a display tool to portray the strategies. Whereas the HP strategy is to attempt to establish its technology infrastructure as the standard e-services infrastructure on the Internet, IBM aims to position its IBM Global Services, rather than its technology, at the center of this ecosystem.  相似文献   
3.
This paper examines monthly wage data collected by the Agro Economic Survey from seven villages in the Cimanuk River Basin of West Java, where data on agricultural and non-agricultural wages and prices of nine essential commodities were collected twice monthly between 1977 and 1983. Movements in money wages deflated by both the rice price and a weighted index of basic commodities are analysed in detail and differences between lowland and upland villages are discussed.  相似文献   
4.
If actively managed mutual funds suffer from diminishing returns to scale, funds should alter investment behavior as assets under management increase. Although asset growth has little effect on the behavior of the typical fund, we find that large funds and small‐cap funds diversify their portfolios in response to growth. Greater diversification, especially for small‐cap funds, is associated with better performance. Fund family growth is related to the introduction of new funds that hold different stocks from their existing siblings. Funds with many siblings diversify less rapidly as they grow, suggesting that the fund family may influence a fund's portfolio strategy.  相似文献   
5.
Replacement investment is essentially a regenerative optimal stopping problem; that is, the key decision concerns when to terminate the life of existing plant – and hence when to start over again. This paper examines this optimisation problem within a continuous time framework and studies the qualitative and quantitative impact of uncertainty on the timing of new investment (and the criteria that should be used for terminating the life of existing plant).  相似文献   
6.
7.
8.
9.
In this paper the role of expenses in explaining closed-end fund discounts is re-examined. A present value model is developed to illustrate the relationship between expenses and discounts. Earlier studies find that discounts are not related to management fees. In this paper, using a larger sample over a longer and different period and a better specification of the expense variable consistent with the model developed, discounts are found to be significantly related to expenses. The relationship between expenses and discounts holds in the presence of other control variables.  相似文献   
10.
Young children's memory for television advertising is important in order for children to recognize brands in stores and/or to recall the brand name in making a purchase request. Two experiments showed that the use of visual advertising retrieval cue (a green frog as the brand character) improved memory performance and brand evaluations. Study 1 (n = 40) showed promise in the cue's assistance in children's recalling the brand name (cued recall) from the ad memory trace. Study 2 (n = 40) contained multiple exposures to the ad, which resulted in greater free recall and in support for the cue's assistance in better access of the brand name from the ad memory trace (cued recall). Affected ad memory resulted in more favorable brand evaluations and intent to request the brand's purchase. © 1994 John Wiley & Sons, Inc.  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