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   13026篇
  免费   345篇
  国内免费   1篇
财政金融   2465篇
工业经济   1140篇
计划管理   2143篇
经济学   2845篇
综合类   181篇
运输经济   93篇
旅游经济   188篇
贸易经济   2193篇
农业经济   660篇
经济概况   1457篇
信息产业经济   1篇
邮电经济   6篇
  2020年   135篇
  2019年   176篇
  2018年   210篇
  2017年   226篇
  2016年   225篇
  2015年   158篇
  2014年   242篇
  2013年   1229篇
  2012年   372篇
  2011年   411篇
  2010年   356篇
  2009年   411篇
  2008年   333篇
  2007年   381篇
  2006年   318篇
  2005年   251篇
  2004年   265篇
  2003年   244篇
  2002年   280篇
  2001年   239篇
  2000年   265篇
  1999年   222篇
  1998年   236篇
  1997年   247篇
  1996年   234篇
  1995年   205篇
  1994年   223篇
  1993年   214篇
  1992年   258篇
  1991年   235篇
  1990年   204篇
  1989年   170篇
  1988年   169篇
  1987年   207篇
  1986年   195篇
  1985年   265篇
  1984年   290篇
  1983年   275篇
  1982年   238篇
  1981年   241篇
  1980年   228篇
  1979年   245篇
  1978年   152篇
  1977年   146篇
  1976年   109篇
  1975年   138篇
  1974年   93篇
  1973年   95篇
  1972年   75篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
The paper focuses on the emerging system of territorial strategic planning in the constituent entities of the Russian Federation and municipalities. Suggested for practical application are the best Russian research studies and practices of coordinating the interests of municipal and regional authorities. The analysis of scholarly approaches to the issue in focus allows one to infer that the best elaborated position is that of the staff of the North-Western Office of the Russian Research Center for Local Governance (RRCLG). As regards the express-analysis of practices adopted in the number of the Russian Federation constituent entities, the practices of the Krasnodar krai appear to be the most promising.  相似文献   
92.
93.
Social capital is a person or group's sympathy for or sense of obligation to another person or group. This article introduces social capital into a neoclassical model of farmland exchange and shows how relationships alter the terms of trade. Empirical evidence from a survey of farmers shows that the type of relationship farmland sellers have with farmland buyers has a statistically significant and economically important effect on the minimum-sell price for farmland. Compared to the minimum-sell price when selling to a total stranger in an arm's-length transaction, farmland sellers discount prices to friendly neighbors and relatives and require a premium from unfriendly neighbors and influential people in the community.  相似文献   
94.
The conventional view of going-private transactions is that they are designed to enhance the efficiency of the firm (for example, Jensen (1986) ). A starkly different view is that these and other control transactions are motivated to effect transfers from other stakeholders in the firm to equity holders ( Shleifer and Summers (1988) ). This study exploits data describing pension terminations as a way to test these theories. We conclude that the efficiency theory can plausibly explain a substantial number of LBO-related terminations, but not enough to undermine the transfer theory. More specific predictions from the efflciency theory are needed to structure more exacting tests.  相似文献   
95.
96.
97.
Supported by SNF Grant No: DMS 8803556.  相似文献   
98.
This paper analyzes the reasons for Japanese/U.S. collaborations in the biotechnology industry, and considers the question of whether such alliances pose a threat to the North American industry. Japan's technological competitiveness in biotechnology is examined in terms of its strengths and perceived weaknesses. Ways in which Japan is attempting to overcome these weaknesses are identified. As well, the strengths and weaknesses of the North American biotechnology industry are assessed. The paper concludes with recommendations for government and R&D managers on how to preserve U.S. competitiveness. R&D managers must keep abreast of their techno-global competitive environments. While organizations can enter into alliances to improve their competitiveness they must be aware of the dangers of collaboration, and to benefit from their alliances they must enhance their organizational learning. Organizations must be aware of the pitfalls of alliance formation, and any alliance must be viewed in its national context. Last, but not least, managers must be more effective in their management of the processes of technological innovation.  相似文献   
99.
The Nested PIGLOG Model: An Application to U.S. Food Demand   总被引:1,自引:0,他引:1  
A new demand system is introduced, the Nested PIGLOG model, nesting thirteen other demand systems including five that are also new. This new model and its nested special cases are applied to models of U.S. food demand that include food-at-home (FAH), food-away-from-home (FAFH), and alcoholic beverages. Although nested tests and out-of-sample forecasting performance favor generalizing models to a certain degree, statistically insignificant improvements to in-sample-fit and even poorer out-of-sample forecast accuracy undermine further generalizations. Based on a subset of preferred models, FAFH is found to be price and income elastic compared to FAH which is price and income inelastic.  相似文献   
100.
This article explores the price of continuously sampled Asian options. For geometric Asian options, we present pricing formulas for both backward‐starting and forward‐starting cases. For arithmetic Asian options, we demonstrate that the governing partial differential equation (PDE) cannot be transformed into a heat equation with constant coefficients; therefore, these options do not have a closed‐form solution of the Black–Scholes type, that is, the solution is not given in terms of the cumulative normal distribution function. We then solve the PDE with a perturbation method and obtain an analytical solution in a series form. Numerical results show that as compared with Zhang's ( 2001 ) highly accurate numerical results, the series converges very quickly and gives a good approximate value that is more accurate than any other approximate method in the literature, at least for the options tested in this article. Graphical results determine that the solution converges globally very quickly especially near the origin, which is the area in which most of the traded Asian options fall. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:535–560, 2003  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