全文获取类型
收费全文 | 6332篇 |
免费 | 200篇 |
专业分类
财政金融 | 1153篇 |
工业经济 | 517篇 |
计划管理 | 1216篇 |
经济学 | 1292篇 |
综合类 | 53篇 |
运输经济 | 79篇 |
旅游经济 | 180篇 |
贸易经济 | 1139篇 |
农业经济 | 227篇 |
经济概况 | 671篇 |
信息产业经济 | 1篇 |
邮电经济 | 4篇 |
出版年
2023年 | 31篇 |
2021年 | 49篇 |
2020年 | 108篇 |
2019年 | 137篇 |
2018年 | 165篇 |
2017年 | 179篇 |
2016年 | 152篇 |
2015年 | 116篇 |
2014年 | 182篇 |
2013年 | 867篇 |
2012年 | 198篇 |
2011年 | 260篇 |
2010年 | 221篇 |
2009年 | 256篇 |
2008年 | 238篇 |
2007年 | 210篇 |
2006年 | 201篇 |
2005年 | 201篇 |
2004年 | 183篇 |
2003年 | 197篇 |
2002年 | 170篇 |
2001年 | 143篇 |
2000年 | 153篇 |
1999年 | 146篇 |
1998年 | 141篇 |
1997年 | 112篇 |
1996年 | 118篇 |
1995年 | 86篇 |
1994年 | 97篇 |
1993年 | 84篇 |
1992年 | 81篇 |
1991年 | 95篇 |
1990年 | 69篇 |
1989年 | 50篇 |
1988年 | 48篇 |
1987年 | 55篇 |
1986年 | 56篇 |
1985年 | 75篇 |
1984年 | 66篇 |
1983年 | 57篇 |
1982年 | 55篇 |
1981年 | 52篇 |
1980年 | 46篇 |
1979年 | 44篇 |
1978年 | 30篇 |
1977年 | 27篇 |
1976年 | 29篇 |
1975年 | 20篇 |
1974年 | 27篇 |
1973年 | 19篇 |
排序方式: 共有6532条查询结果,搜索用时 15 毫秒
21.
The Economic Value of Volatility Timing 总被引:9,自引:0,他引:9
Numerous studies report that standard volatility models have low explanatory power, leading some researchers to question whether these models have economic value. We examine this question by using conditional mean-variance analysis to assess the value of volatility timing to short-horizon investors. We find that the volatility timing strategies outperform the unconditionally efficient static portfolios that have the same target expected return and volatility. This finding is robust to estimation risk and transaction costs. 相似文献
22.
23.
Luis C. Nunes Paul Newbold Chung-Ming Kuan 《Oxford bulletin of economics and statistics》1997,59(4):435-448
Nelson and Plosser (1982), in a classic paper, failed to find strong evidence against the null hypothesis of a generating process with a unit autoregressive root for thirteen US macroeconomic time series. Perron (1989) claimed that such evidence was available for a majority of these series if the alternative hypothesis was of trend stationarity with a break in 1929. Zivot and Andrews (1992) treated the break date as endogenous, then finding strong evidence agcainst the null for a minority of these series. Our own analysis extends theirs by permitting a break under the null as well as the alternative hypothesis, and allowing for the sequential nature of the testing. Our empirical findings complete the circle. We find no strong evidence against the unit root hypothesis for any of the thirteen Nelson–Plosser series. 相似文献
24.
25.
Bruce Acutt Karen Becker Paul Hyland Linda Miller 《International Journal of Training and Development》2006,10(3):195-211
This paper reports on the outcomes of a replication study of a survey of British employers that requested information on the qualifications sought when recruiting employees and on subsequent training and development. While the British survey was interested in the uptake and use of the British National Vocational Qualifications, the study reported in this article is primarily focused on the uptake and use of the Australian Qualifications Framework qualifications by North Australian employers. This study was prompted by the skills shortages and recruitment difficulties being experienced by organizations throughout rural and regional Australia. Previous studies have found that vocational qualifications were not valued by UK employers and few employers were encouraging employees to undertake vocational awards. If this is also the case in Australia, it may in part explain problems in recruiting skilled workers. This research clearly demonstrates that employees in regional and rural Australia are seeking to improve their knowledge and skills through vocational training and higher education qualifications. Also, employers are providing access to training and are supporting managerial and professional employees to gain higher educational qualifications. When recruiting all types of worker other than unskilled labourers, the majority of organizations prefer to recruit workers with qualifications. In rural and regional centres, however, a more pragmatic stance of recruiting unqualified employees in some areas is observed. Clearly, employers will attempt to minimize training costs by recruiting skilled employees, but in the end they will have to provide access to training and education to ensure that they have a skilled workforce that can deliver essential services and products. 相似文献
26.
27.
A number of bargaining experiments have raised the of what is fair or just may be sufficiently powerful to generate bel and systematically from the predictions of standard bargaining experiment designed to test whether the relative impact of different certain changes in the bargaining environment. 相似文献
28.
This article is based on research investigating why local authorities innovate and what happens when they do. The authors show how local authorities have responded to the current normative climate for innovation, and explore the interaction between central policy and local action. The article demonstrates the importance of the policy climate set by central government in fostering—or constraining—innovation at a local level. 相似文献
29.
30.