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   138456篇
  免费   3847篇
  国内免费   1篇
财政金融   26067篇
工业经济   11634篇
计划管理   22240篇
经济学   30038篇
综合类   1490篇
运输经济   963篇
旅游经济   2498篇
贸易经济   23804篇
农业经济   6166篇
经济概况   17109篇
信息产业经济   7篇
邮电经济   288篇
  2021年   841篇
  2020年   1627篇
  2019年   2375篇
  2018年   2396篇
  2017年   2542篇
  2016年   2714篇
  2015年   2099篇
  2014年   3408篇
  2013年   15329篇
  2012年   4239篇
  2011年   4238篇
  2010年   3756篇
  2009年   4370篇
  2008年   3986篇
  2007年   3344篇
  2006年   3630篇
  2005年   3631篇
  2004年   3213篇
  2003年   2974篇
  2002年   2927篇
  2001年   2720篇
  2000年   2637篇
  1999年   2501篇
  1998年   2383篇
  1997年   2387篇
  1996年   2269篇
  1995年   2068篇
  1994年   2098篇
  1993年   2069篇
  1992年   2112篇
  1991年   2024篇
  1990年   1889篇
  1989年   1717篇
  1988年   1654篇
  1987年   1659篇
  1986年   1744篇
  1985年   2510篇
  1984年   2399篇
  1983年   2204篇
  1982年   2062篇
  1981年   1978篇
  1980年   1949篇
  1979年   1878篇
  1978年   1679篇
  1977年   1639篇
  1976年   1394篇
  1975年   1297篇
  1974年   1192篇
  1973年   1191篇
  1972年   903篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
This study examines the impact of Regulation Fair Disclosure (FD) on liquidity, information asymmetry, and institutional and retail investors trading behavior. Our main findings suggest three conclusions. First, Regulation FD has been effective in improving liquidity and in decreasing the level of information asymmetry. Second, retail trading activity increases dramatically after earnings announcements but there is a significant decline in institutional trading surrounding earnings announcements, particularly in the pre‐announcement period. Last, the decline in information asymmetry around earnings announcements is closely associated with a lower participation rate in the pre‐announcement period and more active trading of retail investors after earnings releases.  相似文献   
962.
In two consumer studies, discrete choice surveys were administered both by telephone and by traditional pencil and paper methods. Study participants responded to discrete choice surveys concerning pizza restaurants in the first study and fast food restaurants in the second. Neither aggregate level estimated utilities for the pizza restaurants, nor market shares for the fast food restaurants differed by method of administration. The results indicate that discrete choice surveys can be successfully administered by telephone. He received his Ph.D. in marketing from the University of Texas at Dallas. Dr. Perkins is interested in marketing research methodology and in the use of marketing research information in managerial decision making. Dr. Perkins has published articles in theJournal of Marketing Research andPsychometrika. He is a member of the American Marketing Association, the Marketing Research Association, and the TIMS College of Marketing. Jacqueline Roundy recently completed the M.S. degree in marketing from the Pennsylvania State University. In addition she holds an M.B.A. from the University of Utah. She is currently working in Europe.  相似文献   
963.
Hypotheses which relate top-level managers' age, years of company and industry service, and education to strategic change are studied with a sample of 855 managers from 27 railroads. Results generally support hypotheses that younger managers and those with less experience are more likely to alter their strategies with changing environmental conditions.  相似文献   
964.
This study was undertaken to investigate the inclusion of a kosher claim in an advertisement for a familiar and unfamiliar brand of breakfast cereal. Results showed that, as hypothesized, for the familiar brand a kosher third party endorsement led to significantly more kosher attribute-related thoughts, more favorable product attitude and greater purchase intention. For the unfamiliar brand, no significant impact upon these dependent measures was observed given a kosher endorsement. Findings are interpreted from a cognitive perspective regarding the salience of the kosher attribute in a product familiarity context. Managerial implications are discussed.  相似文献   
965.
966.
This study examines the long memory behavior in gold returns during the post-Bretton Woods period using a new rescaled range technique. Unlike the conventional rescaled range analysis, the new rescaled range analysis is robust to short-term dependence and conditional heteroscedasticity found in the gold data. Statistical results suggest that the long memory behavior in gold returns is rather unstable. When only few observations corresponding to major political events in the Middle East, together with the Hunts event, in late 1979 are omitted, little evidence of long memory can be found.  相似文献   
967.
In this research we use a continuous payment formula for duration to examine the price behavior of a fixed-rate level payment mortgage. In the case where the mortgage is held to maturity, duration increases monotonically as term-to-maturity increases, regardless of changes in the market rate of interest. In the case where the mortgage is prepaid prior to maturity, there exists a unique market interest rate below which duration is a monotonically increasing function of time of prepayment, but above which duration has a global maximum at some time of prepayment prior to the term-to-maturity.  相似文献   
968.
Considering the characteristics of banks that do and do not report interest rate swaps, the long-term interest rate exposure of a bank and the likelihood and extent of swap market participation are found to be positively related. Key to the finding is the inclusion of variables related to the provision of swap market intermediary services, which significantly explain both the likelihood of swap market participation and the notional value of outstanding swaps. The results suggest that the likelihood and extent of swap market participation by low-capitalized banks is less than for other banks.  相似文献   
969.
970.
In order to explain cyclical behavior of factor demand, the static neoclassical model of the firm has been extended to include either adjustment costs (e.g. Lucas (1967)) or time-to-build considerations as in Kydland and Prescott (1982). This paper presents an intertemporal factor demand model which accounts for adjustment costs and gestation lags. The closed form solution of the model is a highly restricted vector ARMA-process that is estimated using quarterly data for the manufacturing industry in the U.S., 1960–1988. The main conclusion is that both sources of dynamics of factor demand are identifiable and found to be empirically of importance.  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