全文获取类型
收费全文 | 24021篇 |
免费 | 525篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 4604篇 |
工业经济 | 1706篇 |
计划管理 | 3569篇 |
经济学 | 5288篇 |
综合类 | 380篇 |
运输经济 | 177篇 |
旅游经济 | 432篇 |
贸易经济 | 3648篇 |
农业经济 | 1256篇 |
经济概况 | 3430篇 |
信息产业经济 | 1篇 |
邮电经济 | 56篇 |
出版年
2021年 | 134篇 |
2020年 | 246篇 |
2019年 | 409篇 |
2018年 | 496篇 |
2017年 | 505篇 |
2016年 | 517篇 |
2015年 | 288篇 |
2014年 | 533篇 |
2013年 | 2452篇 |
2012年 | 717篇 |
2011年 | 801篇 |
2010年 | 666篇 |
2009年 | 747篇 |
2008年 | 722篇 |
2007年 | 630篇 |
2006年 | 565篇 |
2005年 | 478篇 |
2004年 | 506篇 |
2003年 | 452篇 |
2002年 | 506篇 |
2001年 | 441篇 |
2000年 | 457篇 |
1999年 | 436篇 |
1998年 | 404篇 |
1997年 | 416篇 |
1996年 | 411篇 |
1995年 | 357篇 |
1994年 | 367篇 |
1993年 | 399篇 |
1992年 | 408篇 |
1991年 | 401篇 |
1990年 | 329篇 |
1989年 | 302篇 |
1988年 | 291篇 |
1987年 | 302篇 |
1986年 | 309篇 |
1985年 | 468篇 |
1984年 | 433篇 |
1983年 | 400篇 |
1982年 | 376篇 |
1981年 | 345篇 |
1980年 | 390篇 |
1979年 | 318篇 |
1978年 | 270篇 |
1977年 | 256篇 |
1976年 | 198篇 |
1975年 | 242篇 |
1974年 | 193篇 |
1973年 | 188篇 |
1972年 | 133篇 |
排序方式: 共有10000条查询结果,搜索用时 797 毫秒
171.
172.
Repeated measurements often are analyzed by multivariate analysis of variance (MANOVA). An alternative approach is provided by multilevel analysis, also called the hierarchical linear model (HLM), which makes use of random coefficient models. This paper is a tutorial which indicates that the HLM can be specified in many different ways, corresponding to different sets of assumptions about the covariance matrix of the
repeated measurements. The possible assumptions range from the very restrictive compound symmetry model to the unrestricted
multivariate model. Thus, the HLM can be used to steer a useful middle road between the two traditional methods for analyzing repeated measurements. Another
important advantage of the multilevel approach to analyzing repeated measures is the fact that it can be easily used also
if the data are incomplete. Thus it provides a way to achieve a fully multivariate analysis of repeated measures with incomplete
data.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
173.
174.
Swamy P.A.V.B. Tavlas George S. Lutton Thomas J. 《Journal of Productivity Analysis》2003,20(1):97-114
This paper introduces a simple, yet rich, measure of efficiency changes based on the revenue-generating-ability (RGA) principle. Using this principle, we explain the connections between efficiency changes and the variables, such as pretax profits, interest expense, non-interest expense, profit margins, loan loss provision, and asset quality. These connections are used to explain earnings differences between small and large commercial banks. 相似文献
175.
176.
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
177.
Barbara A. Ritter 《Journal of Business Ethics》2006,68(2):153-164
The purpose of this paper is to examine the various guidelines presented in the literature for instituting an ethics curriculum and to empirically study their effectiveness. Three questions are addressed concerning the trainability of ethics material and the proper integration and implementation of an ethics curriculum. An empirical study then tested the effect of ethics training on moral awareness and reasoning. The sample consisted of two business classes, one exposed to additional ethics curriculum (experimental), and one not exposed (control). For the experimental group, ethics exercises and discussion relevant to each topic were completed. Findings suggested gender differences such that, relative to other groups, women in the experimental group showed significantly improved moral awareness and decision-making processes. An explanation of the underlying cognitive processes is presented to explain the gender effect. 相似文献
178.
Chiraphol N. Chiyachantana Christine X. Jiang Nareerat Taechapiroontong Robert A. Wood 《The Financial Review》2004,39(4):549-577
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
179.
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
180.
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