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   143048篇
  免费   3290篇
  国内免费   14篇
财政金融   26644篇
工业经济   11800篇
计划管理   22958篇
经济学   31302篇
综合类   1612篇
运输经济   986篇
旅游经济   2539篇
贸易经济   24384篇
农业经济   6379篇
经济概况   17435篇
信息产业经济   7篇
邮电经济   306篇
  2021年   879篇
  2020年   1675篇
  2019年   2430篇
  2018年   2522篇
  2017年   2698篇
  2016年   2818篇
  2015年   2168篇
  2014年   3488篇
  2013年   15584篇
  2012年   4327篇
  2011年   4394篇
  2010年   3912篇
  2009年   4499篇
  2008年   4154篇
  2007年   3524篇
  2006年   3759篇
  2005年   3760篇
  2004年   3318篇
  2003年   3086篇
  2002年   3021篇
  2001年   2798篇
  2000年   2724篇
  1999年   2569篇
  1998年   2463篇
  1997年   2466篇
  1996年   2331篇
  1995年   2143篇
  1994年   2155篇
  1993年   2132篇
  1992年   2180篇
  1991年   2103篇
  1990年   1942篇
  1989年   1751篇
  1988年   1687篇
  1987年   1686篇
  1986年   1778篇
  1985年   2591篇
  1984年   2470篇
  1983年   2285篇
  1982年   2126篇
  1981年   2044篇
  1980年   2010篇
  1979年   1951篇
  1978年   1715篇
  1977年   1648篇
  1976年   1414篇
  1975年   1313篇
  1974年   1202篇
  1973年   1204篇
  1972年   908篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Abstract: The dwindling nature of overseas development assistance in the early part of the 1990s called for the establishment of capital markets in some African countries, including Ghana, with the view to increasing foreign direct investments and achieving sustainable inflows, growth and development. One important factor which affects the determination of prices and the growth of capital markets is macroeconomic risk which is quite high in developing countries. Following works done on advanced stock markets, this study seeks to investigate the impact of six macroeconomic risk factors on asset pricing in the various industrial classification — financial, manufacturing, food and beverages, distribution and mining under the Ghana Stock Exchange (GSE) for the period January 1997 to December 2002. Using the arbitrage pricing methodology developed by Ross (1976) and Chen et al. (1986) , the study revealed that investors in Ghana considered three main macroeconomic risk factors — short‐term interest rate risk, inflation risk and the term structure of the country's interest rate in the determination of the various industrial asset prices during the period under consideration. Analysis of the risks and returns profile of the industries also shows that financial assets made the best gains on the market. Both general and specific policy recommendations aimed at improving the performance of the GSE are explored.  相似文献   
992.
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   
993.
This article is a navigation guide to the twenty papers that emerged from the workshops conducted at the Sixth Invitational Choice Symposium (Estes Park, Colorado, June 2004). The papers are categorized into three broad sets that focus respectively on choice modeling issues, on providing interdisciplinary perspectives on choice, and on relating choice research to real world concerns. Within each category, we offer provide brief integrative overviews linking subsets of papers.  相似文献   
994.
A bstract . Official perceptions of agriculture's role in economic development in the Eastern European Soviet-type economies have undergone significant alterations over the past several decades. These changes have been especially important in Hungary , a country well known for its unorthodox economic approaches. The modifications of status analyzed below have been consistent with the overall economic policy directives of the Communist party, including the current renewed emphasis on economic rationality, pragmatism , and the revitalization of the economic reform of 1968 .  相似文献   
995.
996.
997.
The objective of this paper is to examine the effects of marking‐to‐market of futures contracts on the price differential between futures and forward contracts based on the predictions of the Cox, Ingersoll and Ross (1981) (CIR) model. Cox et al ., (1981) derive a series of propositions with respect to the relationship between futures and forward prices and a set of testable implications. These are tested empirically in this paper using Australian data from November 1991 to June 1997. The results provide evidence of the presence of significant futures and forward price differences, where the futures price is consistently below the forward price. Only partial support is found for the Cox et al ., (1981) propositions, implying that the effect of marking‐to‐market is not able to fully account for the price differential. Therefore, it is not possible to rule out the influence of other institutional factors on the futures‐forward price difference.  相似文献   
998.
999.
1000.
While the benefits of being market oriented are largely accepted, a group of scholars and managers remain skeptical. Marketing scholars have sought to counter the criticisms leveled against market orientation (MO) by arguing that it has both responsive and proactive dimensions. However, few studies have empirically examined the complexity of the effects of these dimensions on firm performance. Drawing on theories of resource‐based advantage and organizational search behavior, this article advances understanding by arguing that responsive and proactive market orientations have curvilinear effects on product development performance, that their interaction may be positively related to product development performance, and that their effects on new product program performance are moderated differentially by the organizational implementation conditions and marketing function power. Survey results of 175 U.S. firms indicate support for most of the hypotheses. Specifically, whereas responsive MO has a U‐shaped relationship with new product program performance, proactive MO has an inverted U‐shaped relationship with new product program performance. Contrary to the arguments presented here, the interaction of both orientations is negatively related to new product program performance. This study finds that both orientations are needed; however, new product program performance is enhanced when one is at higher level and the other is at lower level. Finally, responsive MO is only positively related to new product program performance under specific conditions such as when strategic consensus among managers is high. On the other hand, the positive effect of proactive MO on new product program performance is further strengthened when learning orientation and marketing power are high. Overall, this study suggests that the effects of responsive and proactive MO on new product program performance are more complex than previously theoretically argued and empirically examined.  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