全文获取类型
收费全文 | 142571篇 |
免费 | 3340篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 26621篇 |
工业经济 | 11983篇 |
计划管理 | 22784篇 |
经济学 | 30887篇 |
综合类 | 1499篇 |
运输经济 | 1000篇 |
旅游经济 | 2604篇 |
贸易经济 | 24393篇 |
农业经济 | 6379篇 |
经济概况 | 17496篇 |
信息产业经济 | 10篇 |
邮电经济 | 256篇 |
出版年
2021年 | 859篇 |
2020年 | 1690篇 |
2019年 | 2473篇 |
2018年 | 2486篇 |
2017年 | 2663篇 |
2016年 | 2838篇 |
2015年 | 2169篇 |
2014年 | 3506篇 |
2013年 | 15900篇 |
2012年 | 4372篇 |
2011年 | 4424篇 |
2010年 | 3881篇 |
2009年 | 4513篇 |
2008年 | 4106篇 |
2007年 | 3478篇 |
2006年 | 3755篇 |
2005年 | 3716篇 |
2004年 | 3267篇 |
2003年 | 3069篇 |
2002年 | 2980篇 |
2001年 | 2815篇 |
2000年 | 2703篇 |
1999年 | 2583篇 |
1998年 | 2476篇 |
1997年 | 2509篇 |
1996年 | 2347篇 |
1995年 | 2132篇 |
1994年 | 2104篇 |
1993年 | 2087篇 |
1992年 | 2127篇 |
1991年 | 2064篇 |
1990年 | 1922篇 |
1989年 | 1739篇 |
1988年 | 1668篇 |
1987年 | 1677篇 |
1986年 | 1759篇 |
1985年 | 2545篇 |
1984年 | 2412篇 |
1983年 | 2208篇 |
1982年 | 2074篇 |
1981年 | 1992篇 |
1980年 | 1956篇 |
1979年 | 1907篇 |
1978年 | 1681篇 |
1977年 | 1658篇 |
1976年 | 1425篇 |
1975年 | 1302篇 |
1974年 | 1230篇 |
1973年 | 1201篇 |
1972年 | 912篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Summary A procedure is proposed in this paper for testing the shape parameter, of the Weibull distribution. The test statistic which is based on the extremal quotient, possesses a monotone property which makes it possible for rejection earlier than the last planned observation of the null hypothesis,H
0: =0 when the alternative hypothesis isH
a: <0 and early acceptance ofH
0 whenH
a: >0. The test being scale-free, does not require the scale parameter to be known. 相似文献
992.
Prof. Dr. G. Bruckmann 《Metrika》1969,14(1):183-213
Zusammenfassung Nach einer kritischen Analyse der Begriffe „absolute“ und „relative“ Konzentration werden einige Kriterien gegeben, die Ma?zahlen
der absoluten oder der relativen Konzentration zu erfüllen haben. Hierauf wird untersucht, inwieweit die gebr?uchlichsten
Ma?zahlen der Konzentration (Gini, Herfindahl, Münzner) diese Kriterien erfüllen. Dann wird gezeigt, da? sich eine vonAdam angegebene, sehr allgemeine Klasse von Ma?zahlen als Ma?zahlen der absoluten Konzentration qualifizieren; einige wichtige
Spezialf?lle werden genauer untersucht. Im vorletzten Teil der Arbeit werden Ma?zahlen für die Ver?nderung der Konzentration
diskutiert und schlie?lich an einem praktischen Beispiel erprobt.
Summary After analysing the concepts of “absolute concentration” versus “relative concentration”, some criteria for coefficients of concentration are given to qualify them either as measures for absolute or for relative concentration. On the basis of these criteria, some well-known coefficients (Gini, Herfindahl, Münzner) are examined. Furthermore, it is shown that the measures of “predictivity” as given byAdam can be regarded as coefficients of absolute concentration; some important special cases (one of which the Herfindahl index) are investigated. Finally, measures for the change in concentration are developed and applied to a practical example.相似文献
993.
Dr. R. -D. Reiss 《Metrika》1976,23(1):7-14
It is shown that minimum distance estimators for families of unimodal densities are always consistent; the rate of convergence is indicated. An algorithm is proposed for computing the minimum distance estimator for the family of all unimodal densities. References are given to the maximum likelihood method and the kernel method. 相似文献
994.
This paper develops a mathematical programming model for obtaining a best set of sites for planned facilities. The model is concerned with those situations where resource constraints are present. The specific setting for the paper involves the selection of sites for a set of retail outlets, wherein the ratio of aggregate outputs to inputs for the selected set is maximal among all possible sets that could be chosen. At the same time, the model guarantees that the only sets of stores allowable are those for which the available resources are used to the maximum extent possible. 相似文献
995.
This paper examines the determinants of intended electoral participation. We analyze attitudes to both referenda and voting
in national elections. Sample survey data are obtained from the Eurobarometer survey of transition countries in Central and
Eastern Europe. The empirical results suggest that intended electoral participation increases with age, income and education.
But attitudinal variables are also important and in particular confidence in the free market economy and satisfaction with
the general development of the country impact positively on intended electoral participation.
Received: Received: April 2003 / Accepted: August 2004, Accepted: Received: April 2003 / Accepted: August 2004,
JEL Classification:
H26, K42
We gratefully acknowledge the financial support of CERGE-EI. We are also grateful for the helpful comments of three anonymous
referees, the journal editor and R. Filer and L. Squires. 相似文献
996.
John C. Alexander Jr. Michael F. Spivey 《The Quarterly Review of Economics and Finance》1997,37(4):905-921
The Worker Adjustment and Retraining Notification (WARN) Act of 1989 mandated that at least 60 days advance notice be given to employees. Critics argued that its passage would decrease managerial flexibility in closing plants, subsequently reducing firm values. This study addresses this issue by examining the stock market's reaction to announcements leading to the eventual enactment of the WARN legislation. We find evidence indicating negative effects of the legislation on stock returns of small firms. 相似文献
997.
Benno?Torglerbenno.torgler@unibas.ch" title="ecobtx@langate.gsu.edu benno.torgler@unibas.ch" itemprop="email" data-track="click" data-track-action="Email author" data-track-label="">Email author 《Economics of Governance》2004,5(3):235-253
With data gained from a controlled field experiment in Switzerland this paper analyses the effects of moral suasion on the timely paying and the timely filling out of the tax form 2001. Comparisons of different tax filing years and multiple regression estimations have been done using these two factors as dependent variables to check if there is a significant difference between the control group and the treatment group. In February 2002 the treatment group received a letter signed by the communes fiscal commissioner containing normative appeals. Results indicate that moral suasion has hardly any effect on taxpayers compliance behaviour. The strongest effect can be observed for the variable tax payments.Received: February 2003, Accepted: June 2004 JEL Classification:
H260, H710BennoTorgler: Special thanks are due to the tax administration of Trimbach, especially to Adolf Müller and Gary Bitterli, who offered me the opportunity to collect the data and assisted the project. Furthermore I acknowledge the financial support of the WWZ-Forum and Swiss National Science Foundation and comments and suggestions from Doris Aebi, René L. Frey, the editor Kai A. Konrad and two anonymous referees. 相似文献
998.
Anchor stores 总被引:2,自引:0,他引:2
Planned shopping malls usually have one or more department (anchor) stores and multiple specialized retailers selling substitutable commodities in each commodity category. If consumers know their taste for the anchor's commodity and its price, but learn about a retailer's commodity only by costly search, collocation may benefit both store types. Intra-mall competition reduces markups, but anchors guarantee a minimum surplus from search. A mall with many retailers makes finding a suitable specialized commodity highly probable. For some parameters, additional consumer search dominates the loss in retail markups, so a profit-maximizing land developer would rent mall space to both store types. 相似文献
999.
This paper applies Kim and Wardes (2004) stratified Warners randomized response model to Mangat and Singhs (1990) two-stage randomized response model. The proposed stratified randomized response model has an optimal allocation and a large gain in precision. Hence, the estimator based on the proposed method is more efficient than Kim and Wardes (2004) and Mangat and Singhs (1990) estimators under the conditions presented in both the case of completely truthful reporting and that of not completely truthful reporting by the respondents. 相似文献
1000.