全文获取类型
收费全文 | 13808篇 |
免费 | 1455篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 2526篇 |
工业经济 | 1173篇 |
计划管理 | 2750篇 |
经济学 | 3185篇 |
综合类 | 221篇 |
运输经济 | 150篇 |
旅游经济 | 185篇 |
贸易经济 | 2753篇 |
农业经济 | 677篇 |
经济概况 | 1613篇 |
信息产业经济 | 1篇 |
邮电经济 | 30篇 |
出版年
2021年 | 130篇 |
2020年 | 282篇 |
2019年 | 630篇 |
2018年 | 407篇 |
2017年 | 587篇 |
2016年 | 556篇 |
2015年 | 519篇 |
2014年 | 568篇 |
2013年 | 1443篇 |
2012年 | 647篇 |
2011年 | 616篇 |
2010年 | 563篇 |
2009年 | 500篇 |
2008年 | 488篇 |
2007年 | 429篇 |
2006年 | 362篇 |
2005年 | 312篇 |
2004年 | 289篇 |
2003年 | 283篇 |
2002年 | 247篇 |
2001年 | 278篇 |
2000年 | 256篇 |
1999年 | 185篇 |
1998年 | 175篇 |
1997年 | 202篇 |
1996年 | 177篇 |
1995年 | 185篇 |
1994年 | 166篇 |
1993年 | 167篇 |
1992年 | 195篇 |
1991年 | 190篇 |
1990年 | 150篇 |
1989年 | 151篇 |
1988年 | 124篇 |
1987年 | 125篇 |
1986年 | 126篇 |
1985年 | 178篇 |
1984年 | 156篇 |
1983年 | 171篇 |
1982年 | 137篇 |
1981年 | 168篇 |
1980年 | 140篇 |
1979年 | 160篇 |
1978年 | 134篇 |
1977年 | 119篇 |
1976年 | 127篇 |
1975年 | 106篇 |
1974年 | 101篇 |
1973年 | 85篇 |
1972年 | 64篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Hans‐Martin Krolzig 《Oxford bulletin of economics and statistics》2003,65(Z1):769-801
Structural vector autoregressive (SVAR) models have emerged as a dominant research strategy in empirical macroeconomics, but suffer from the large number of parameters employed and the resulting estimation uncertainty associated with their impulse responses. In this paper, we propose general‐to‐specific (Gets) model selection procedures to overcome these limitations. It is shown that single‐equation procedures are generally efficient for the reduction of recursive SVAR models. The small‐sample properties of the proposed reduction procedure (as implemented using PcGets) are evaluated in a realistic Monte Carlo experiment. The impulse responses generated by the selected SVAR are found to be more precise and accurate than those of the unrestricted VAR. The proposed reduction strategy is then applied to the US monetary system considered by Christiano, Eichenbaum and Evans (Review of Economics and Statistics, Vol. 78, pp. 16–34, 1996) . The results are consistent with the Monte Carlo and question the validity of the impulse responses generated by the full system. 相似文献
102.
In-depth data analysis plus statistical modeling can produce inferentialcausal models. Their creation thus combines aspects of analysis by close inspection,that is, reason analysis and cross-tabular analysis, with statistical analysis procedures,especially those that are special cases of the generalized linear model (McCullaghand Nelder, 1989; Agresti, 1996; Lindsey, 1997). This paper explores some of the roots of this combined method and suggests some new directions. An exercise clarifies some limitations of classic reason analysis by showing how the cross tabulation of variables with controls for test factors may produce better inferences. Then, given the cross tabulation of several variables, by explicating Coleman effect parameters, logistic regressions, and Poisson log-linear models, it shows how generalized linear models provide appropriate measures of effects and tests of statistical significance. Finally, to address a weakness of reason analysis, a case-control design is proposed and an example is developed. 相似文献
103.
Time-Based Management of the New Product Development Process 总被引:3,自引:0,他引:3
This study explored the problem of compressing new product development by focusing on the specific phases of the innovation process. These phases manifest significant qualitative differences that require attention for understanding the complexities of accelerating new product development. Based on data from 35 high-technology companies, Necmi Karagozoglu and Warren Brown identified several different acceleration methods. Results revealed unexpected and at times inconsistent insights than those reflected in the case study and anecdotally based literature, and implied also that some of the well documented approaches to successful new product development need to be replaced with their time-based versions. 相似文献
104.
This paper examines the comments submitted by UK companies on 20 proposed accounting standards to test the hypotheses that executives favor standards that increase, or dampen the variance of, accounting profit numbers on which their incentive remuneration is based. Test results were generally as hypothesised but only the profit variance outcomes were statistically significant. Allowing for political environment changes affected only the profit variance results. There was no evidence that the relative monetary size of bonus payments was a significant lobbying factor. No significant differences were found between the lobbying preferences of companies with or without executive incentive schemes. 相似文献
105.
106.
Dominic Gasbarro Kim‐Song Le Robert G. Schwebach J. Kenton Zumwalt 《The Journal of Financial Research》2004,27(1):133-141
Announcements of syndication loans increase borrowers' shareholder wealth if they are revolving credit agreements but not if they are term loans. Share price responses to revolving credit announcements are positive and significant, whereas the wealth effect for term loans is negative and significant. The results show that announcements from both the financial press and commercial information providers can affect borrower share price reaction. Overall, single syndication announcements appear to be more newsworthy than multiple announcements reported in the financial press, and we find evidence of information leakage, post‐announcement drift, or both. 相似文献
107.
108.
The first objective of this article is to clarify which model best captures the structure and trend of the influence of social origin on children's education. The second objective is to analyse how general conclusions on historical trends in educational reproduction change if we add mother's status background to the model. Six contrasting hypotheses are derived fromthe body of literature dealing with models on families' socioeconomic status. All hypotheses are translated into empirical models and their explained variance is compared. A pooled data set is used that contains data from the Netherlands, West Germany, and the USA. The Modified Dominance Model, that distinguishes the influence of the highest from thelowest status parent, has the best model fit. Regarding the second objective we see that adding the mother's influence to that of the father's does not change general conclusions on trends in educational reproduction. Over time the influence of both parents decreases continuously. However, the influence of the mother's education and occupational status on children's educational attainment is substantive. 相似文献
109.
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
110.
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