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   134829篇
  免费   3820篇
  国内免费   1篇
财政金融   25533篇
工业经济   11542篇
计划管理   21583篇
经济学   29001篇
综合类   1448篇
运输经济   954篇
旅游经济   2481篇
贸易经济   23029篇
农业经济   6081篇
经济概况   16750篇
信息产业经济   7篇
邮电经济   241篇
  2021年   826篇
  2020年   1623篇
  2019年   2367篇
  2018年   2293篇
  2017年   2480篇
  2016年   2651篇
  2015年   2077篇
  2014年   3391篇
  2013年   15226篇
  2012年   4172篇
  2011年   4081篇
  2010年   3650篇
  2009年   4281篇
  2008年   3851篇
  2007年   3181篇
  2006年   3531篇
  2005年   3529篇
  2004年   3069篇
  2003年   2852篇
  2002年   2823篇
  2001年   2630篇
  2000年   2588篇
  1999年   2449篇
  1998年   2306篇
  1997年   2355篇
  1996年   2196篇
  1995年   2024篇
  1994年   2029篇
  1993年   2007篇
  1992年   2045篇
  1991年   1944篇
  1990年   1818篇
  1989年   1680篇
  1988年   1610篇
  1987年   1609篇
  1986年   1691篇
  1985年   2450篇
  1984年   2332篇
  1983年   2123篇
  1982年   1988篇
  1981年   1924篇
  1980年   1901篇
  1979年   1823篇
  1978年   1592篇
  1977年   1582篇
  1976年   1347篇
  1975年   1238篇
  1974年   1161篇
  1973年   1148篇
  1972年   862篇
排序方式: 共有10000条查询结果,搜索用时 531 毫秒
991.
We re‐examine the benefits of using a broader set of research methods to address key questions associated with the resource‐based view (RBV) of the firm. In responding to Levitas and Chi, we consider how research inside organizations can complement and augment research relying on secondary data. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
992.
993.
Portfolio value‐at‐risk (PVAR) is widely used in practice, but recent criticisms have focused on risks arising from biased PVAR estimates due to model specification errors and other problems. The PVAR estimation method proposed in this article combines generalized Pareto distribution tails with the empirical density function to model the marginal distributions for each asset in the portfolio, and a copula model is used to form a joint distribution from the fitted marginals. The copula–mixed distribution (CMX) approach converges in probability to the true marginal return distribution but is based on weaker assumptions that may be appropriate for the returns data found in practice. CMX is used to estimate the joint distribution of log returns for the Taiwan Stock Exchange (TSE) index and the associated futures contracts on SGX and TAIFEX. The PVAR estimates for various hedge portfolios are computed from the fitted CMX model, and backtesting diagnostics indicate that CMX outperforms the alternative PVAR estimators. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:997–1018, 2006  相似文献   
994.
This paper tests how competition in local U.S. banking markets affects the market structure of nonfinancial sectors. Theory offers competing hypotheses about how competition ought to influence firm entry and access to bank credit by mature firms. The empirical evidence, however, strongly supports the idea that in markets with concentrated banking, potential entrants face greater difficulty gaining access to credit than in markets in which banking is more competitive.  相似文献   
995.
An individual's tendencies in purely personal relationships seem to lead to related tendencies in consumer relationships. The following article presents a study that illustrates how individual differences in personal relationship attachment style can be used to predict the likely success of consumer relationships. In addition, it illustrates how the success of consumption versus nonconsumption relationships can be explained by the effect of attachment style on the individual's perception of qualities of the relationship. © 2006 Wiley Periodicals, Inc.  相似文献   
996.
We examine four issues pertaining to initial public offerings (IPOs) using a survey of 438 chief financial officers (CFOs). First, why do firms go public? Second, is CFO sentiment stationary across bear and bull markets? Third, what concerns CFOs about going public? Fourth, do CFO perceptions correlate with returns? Results support funding for growth and liquidity as the primary reasons for IPOs. CFO sentiment is generally stationary in pre‐ and post‐bubble years. Managers are concerned with the direct costs of going public, such as underwriting fees, as well as indirect costs. We find a negative relation between a focus on immediate growth and long‐term abnormal returns.  相似文献   
997.
998.
By most accounts, the Internet and related advances in information technology significantly affect financial services in general and insurance markets and institutions in particular. Coupled with other important trends such as globalization and regulatory reform, these changes are forcing far‐reaching changes upon the insurance industry and making it more competitive. This article focuses specifically on the implications of the Internet for insurance markets and institutions. The conventional wisdom that the Internet constitutes a sufficient condition for the disintermediation of traditional insurance distribution networks is called into question. To the extent that the Internet reduces transaction costs, it will create opportunities for new intermediaries as well as for existing ones. It will also influence product design, in some cases making it economically attractive to unbundle and repackage various forms of coverage. By removing entry barriers and reducing insurance costs, the Internet will also provide a private market solution to a major insurance regulatory concern—enhancing insurance affordability and availability.  相似文献   
999.
1000.
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