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   25882篇
  免费   531篇
  国内免费   1篇
财政金融   4959篇
工业经济   1870篇
计划管理   3840篇
经济学   5620篇
综合类   409篇
运输经济   205篇
旅游经济   493篇
贸易经济   4010篇
农业经济   1385篇
经济概况   3565篇
信息产业经济   1篇
邮电经济   57篇
  2021年   147篇
  2020年   272篇
  2019年   459篇
  2018年   559篇
  2017年   565篇
  2016年   577篇
  2015年   330篇
  2014年   571篇
  2013年   2674篇
  2012年   788篇
  2011年   887篇
  2010年   726篇
  2009年   834篇
  2008年   788篇
  2007年   691篇
  2006年   621篇
  2005年   528篇
  2004年   555篇
  2003年   512篇
  2002年   554篇
  2001年   481篇
  2000年   491篇
  1999年   473篇
  1998年   438篇
  1997年   458篇
  1996年   445篇
  1995年   380篇
  1994年   391篇
  1993年   422篇
  1992年   436篇
  1991年   420篇
  1990年   350篇
  1989年   319篇
  1988年   309篇
  1987年   324篇
  1986年   321篇
  1985年   489篇
  1984年   448篇
  1983年   405篇
  1982年   386篇
  1981年   359篇
  1980年   405篇
  1979年   330篇
  1978年   279篇
  1977年   270篇
  1976年   204篇
  1975年   252篇
  1974年   194篇
  1973年   191篇
  1972年   138篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
Summary Standard laboratory posted-offer markets respond slowly and incompletely to demand shocks. In these one-sided markets, where sellers control the setting of prices, very little information is transmitted via the process of exchange. For this reason, traders have trouble distinguishing randomness in their own experience from changes in market fundamentals. This paper reports the results of twelve laboratory markets conducted to assess whether some common variants to standard posted-offer rules can correct the adjustment deficiences. Although discounting, multiple postings and excess demand information all improve performance, we find that response remains poor, and efficiencies low.Support for this research was provided by the National Science Foundation (SBR 9319842 and SBR 9320044), and the University of Virginia Bankard Fund. Data are archived at FTP address: fido.econlab.arizona.edu. We wish to thank Charles Plott and Shyam Sunder for useful comments on an earlier draft of this paper. The usual disclaimer applies.  相似文献   
72.
Abstract:   This paper examines the characteristics of firms that account for deferred tax liabilities related to government investment grants under an extended adoption timing period. Not only the recognition but also the timing decision is associated with changes in future performance and changes in the debt structure. Recognisers outperform non‐recognisers in the future, while early recognition is related to post recognition performance but only for those firms that currently perform well. Changes in the balance sheet structure are also related to both decisions. Firms with recent increases in the debt level tend to postpone recognition, while currently well‐performing firms that increase their future debt level are less likely to recognise deferred taxes.  相似文献   
73.
74.
The impact of skewness in the hedger's objective function is tested using a model of hedging derived from a third‐order Taylor Series approximation of expected utility. To determine the effect of price skewness upon hedging and speculation, analytical results are derived using an example of cotton storage. Findings suggest that when forward risk premiums and price skewness in the spot asset have opposite signs, speculation increases relative to the mean‐variance model. When the signs are identical, speculation will decrease, contradicting findings of mean‐variance models. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:503–520, 2006  相似文献   
75.
We investigate bank stocks'sensitivity to changes in interest rates and the factors affecting this sensitivity. We focus on whether the exposure of commercial banks to interest rate risk is conditioned on certain balance sheet and income statement ratios. We find a significantly negative relation between bank stock returns and changes in interest rates over the period 1991–1996. We also find that bank characteristics measured from basic financial statement information explain bank stocks'sensitivity to interest rate changes. These results suggest that bank managers, analysts, and regulators can use this information to assess the relative risk exposure of banks.  相似文献   
76.
The integration of marketing and R&D is a major concern for companies that want to improve their new product performance (NPP). For this integration, companies are using mechanisms such as physical proximity, cross-functional teams, and job rotation. This study examines the effectiveness of these mechanisms by developing a model that distinguishes between indirect effects of mechanisms on NPP (i.e., through a higher level of integration) and direct effects. The model is tested with data collected from 148 pharmaceutical companies. We were able to measure and compare the effectiveness of seven different integration mechanisms, which produced insights that are interesting and relevant for theory as well as practice.
We found that housing marketing and R&D closer to each other and using an influential cross-functional phase review board are the most effective mechanisms to foster integration. Equal remuneration and career opportunities for marketing and R&D and cross-functional teams are somewhat less effective, whereas personnel movement and informal social group events contribute little. ICT appears to be a very effective tool for enhancing NPP. ICT not only fosters integration between marketing and R&D, but it also has an independent direct positive effect on NPP. Through ICT the day-to-day communication between the different parties in the companies becomes much easier, and we think that this fosters the knowledge creation process within marketing and R&D. For cross-functional phase review boards we found a negative direct effect on NPP. Notwithstanding its strong positive effect on integration, a price is paid in terms of NPP. This may be related to the amount of formalization and complexity accompanying this mechanism.  相似文献   
77.
Initial margin requirements represent: (1) a cost impediment to the wealth constrained investor and (2) a potential way of mitigating excessive volatility. However, prior empirical research finds that margins are not an effective tool in reducing volatility. We consider the possibility that margins primarily affect certain stocks and investors. Specifically, we test whether margins affect individuals who, as a group, we believe to be the investors most affected when margin requirements change. Our initial empirical tests, however, do not support this contention.  相似文献   
78.
A conceptual framework for evaluating statutory performance indicators for local authorities is developed. The framework, which contains 14 dimensions of organizational performance, is then applied to the indicators set for local government from 1993/94 to 2001/02. The results show that the validity and comparability of the indicators has improved substantially over time. However, a critical weakness that remains is the absence of indicators that link spending with service outcomes. Such indicators are essential if judgements about value for money and Best Value are to be made.  相似文献   
79.
In this comment we identify the key features of the Frantz and Walker (1997) game theoretic model that drive the non-disclosure equilibrium result in their paper. We argue that, although technically correct, their model fails to capture certain aspects of real-world wage bargaining that will be important in determining optimal disclosure strategies in practice. However, Frantz and Walker's paper illustrates the potential of analytical techniques to contribute to the employee disclosure debate.  相似文献   
80.
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