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   138956篇
  免费   3877篇
  国内免费   1篇
财政金融   26151篇
工业经济   11668篇
计划管理   22306篇
经济学   30211篇
综合类   1490篇
运输经济   974篇
旅游经济   2499篇
贸易经济   23875篇
农业经济   6192篇
经济概况   17173篇
信息产业经济   7篇
邮电经济   288篇
  2021年   846篇
  2020年   1647篇
  2019年   2400篇
  2018年   2421篇
  2017年   2570篇
  2016年   2734篇
  2015年   2114篇
  2014年   3423篇
  2013年   15383篇
  2012年   4264篇
  2011年   4265篇
  2010年   3770篇
  2009年   4390篇
  2008年   4006篇
  2007年   3355篇
  2006年   3642篇
  2005年   3648篇
  2004年   3229篇
  2003年   2992篇
  2002年   2938篇
  2001年   2738篇
  2000年   2649篇
  1999年   2509篇
  1998年   2391篇
  1997年   2393篇
  1996年   2279篇
  1995年   2071篇
  1994年   2099篇
  1993年   2071篇
  1992年   2112篇
  1991年   2032篇
  1990年   1892篇
  1989年   1717篇
  1988年   1655篇
  1987年   1663篇
  1986年   1745篇
  1985年   2512篇
  1984年   2407篇
  1983年   2207篇
  1982年   2066篇
  1981年   1980篇
  1980年   1950篇
  1979年   1878篇
  1978年   1683篇
  1977年   1641篇
  1976年   1397篇
  1975年   1300篇
  1974年   1192篇
  1973年   1192篇
  1972年   904篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
391.
This article presents an application of Prezeworski and Teune's so-called “identity-equivalence method” to a large set of indicators of political participation. By relaxing commonly held assumptions about necessary distinctions among types of participation, it is found that the distinction between “conventional” and “unconventional” modes of participation is unnecessary, while the distinction between “government” and “nongovernment” has some merit. The findings also lend further support to the claims of Prezeworski and Teune that the identity-equivalence method is preferable to the identical indicator method.  相似文献   
392.
393.
A model that addresses the similarities and differences in conceptual antecedents of attitudes toward private label grocery products and national brand promotions is proposed and tested. The proposed model is tested using a sample of 300 consumers who were recruited from grocery stores, provided behavioral data from sales receipts of their shopping trip, and responded to a survey that contained multi-item construct measures. We predict and find in the study that both price and nonprice related constructs impact both private label attitude and national brand promotion attitude, but the directionality and strength of several of these relationships differ. Implications of these findings for retailers and national manufacturers are discussed.  相似文献   
394.
This research extends the literature on nonfinancial performance measures (NFPMs) by assessing (1) the information content of a broader set of NFPMs and (2) whether NFPMs provide information not provided by financial performance measures (FPMs) from all previously identified FPM categories, rather than just earnings and book value. Specifically, exploratory and confirmatory factor analysis results presented in this paper demonstrate that nineteen NFPMs of major airlines capture seven underlying constructs not captured by eighteen common FPMs. Additionally, this research develops reliable composite measures of the identified performance measure constructs, which prior research argues are superior to individual performance measures.  相似文献   
395.
Trading and Pricing in Upstairs and Downstairs Stock Markets   总被引:6,自引:0,他引:6  
We provide empirical evidence on the economic benefits of negotiatingtrades in the upstairs trading room of brokerage firms relativeto the downstairs market. Using Helsinki Stock Exchange data,we find that upstairs trades tend to have lower informationcontent and lower price impacts than downstairs trades. Thisis consistent with the hypotheses that the upstairs market isbetter at pricing uninformed liquidity trades and that upstairsbrokers can give better prices to their customers if they knowthe unexpressed demands of other customers. We find that theseeconomic benefits depend on price discovery occurring in thedownstairs market.  相似文献   
396.
Recent studies suggest the apparent delay in the stock-price response to earnings announcements (i.e., post-earnings announcement drift) is caused by investors who underestimate the autocorrelation of seasonally-differenced earnings (persistence). I present results that suggest: (1) a firm's future persistence is predictable on the basis of its past persistence; (2) the immediate stock-price response to earnings is positively related to historical persistence; (3) post-earnings-announcement drift is independent of historical persistence; and (4) consistent with (2) and (3), the difference between a firm's current observed persistence and that implied in stock prices is independent of its historical persistence. These results extend prior research by demonstrating that investors are aware not only that seasonally-differenced earnings are autocorrelated, but that investors recognize firm-specific differences in the magnitude of the autocorrelation.  相似文献   
397.
N. Vittal   《Futures》2004,36(6-7):781
India is a rich country in which poor people live, a big country which does not realise its own potential. India must build on its strengths and achieve its potential to become an economic superpower with a good and just society. A number of attitudinal and structural factors, such as lack of national pride, politics based on caste and other identities, a hierarchic and corruption-ridden feudal society and the tendency to reward failure and weakness rather than success and achievement are the major hurdles that are stopping us from achieving our true potential. On the other hand, our strengths in democratically managing a multi-ethnic, multi-cultural country and our capacity to master technology are also notable. Steps and hopeful developments that show the way forward to solve our national problems and realise the vision of a better India are suggested.  相似文献   
398.
399.
In the present paper, risk‐management problems where farmers manage risk both through production decisions and through the use of market‐based and informal risk‐management mechanisms are considered. It is shown that many of these problems share a common structure, and that a unified and informative treatment of a broad spectrum of risk‐management tools is possible within a cost‐minimisation framework, under minimal conditions on their objective functions. Fundamental results are derived that apply regardless of the producer's preference towards risks, using only the no‐arbitrage condition that agricultural producers never forego any opportunity to lower costs without lowering returns.  相似文献   
400.
Summary. Combining a strategy model, an inference procedure and a new experimental design, we map sequences of observed actions in repeated games to unobserved strategies that reflect decision-makers’ plans. We demonstrate the method by studying two institutional settings with distinct theoretical predictions. We find that almost all strategies inferred are best responses to one of the inferred strategies of other players, and in one of the settings almost all of the inferred strategies, which include triggers to punish non-cooperators, are consistent with equilibrium strategies. By developing a method to infer unobserved repeated-game strategies from actions, we take a step toward making game theory a more applied tool, bridging a gap between theory and observed behavior.Received: 23 December 2002, Revised: 19 April 2005, JEL Classification Numbers: C72, C80, C90.The authors are indebted for discussions with Ray Battalio, David Cooper, Robin Dubin, John Duffy, Ellen Garbarino, Susan Helper, Margaret Meyer, John Miller, Jim Rebitzer, Mari Rege, Al Roth, and John Van Huyck. The authors also benefited from discussants at economic department seminars at Case Western Reserve, McMaster and McGill University, University of Pittsburgh, SUNY-Stony Brook, and Texas A&M, and participants at the 2002 European Winter Meeting of the Econometric Society. We are grateful for the financial support provided by the Department of Economics at the University of Pittsburgh and Case Western Reserve University.  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