全文获取类型
收费全文 | 6830篇 |
免费 | 202篇 |
专业分类
财政金融 | 1262篇 |
工业经济 | 558篇 |
计划管理 | 1237篇 |
经济学 | 1493篇 |
综合类 | 48篇 |
运输经济 | 87篇 |
旅游经济 | 119篇 |
贸易经济 | 1226篇 |
农业经济 | 265篇 |
经济概况 | 699篇 |
邮电经济 | 38篇 |
出版年
2022年 | 32篇 |
2021年 | 47篇 |
2020年 | 92篇 |
2019年 | 115篇 |
2018年 | 157篇 |
2017年 | 172篇 |
2016年 | 184篇 |
2015年 | 133篇 |
2014年 | 186篇 |
2013年 | 742篇 |
2012年 | 259篇 |
2011年 | 265篇 |
2010年 | 255篇 |
2009年 | 292篇 |
2008年 | 233篇 |
2007年 | 217篇 |
2006年 | 212篇 |
2005年 | 201篇 |
2004年 | 188篇 |
2003年 | 197篇 |
2002年 | 167篇 |
2001年 | 163篇 |
2000年 | 159篇 |
1999年 | 150篇 |
1998年 | 134篇 |
1997年 | 138篇 |
1996年 | 142篇 |
1995年 | 104篇 |
1994年 | 110篇 |
1993年 | 112篇 |
1992年 | 103篇 |
1991年 | 83篇 |
1990年 | 85篇 |
1989年 | 75篇 |
1988年 | 71篇 |
1987年 | 57篇 |
1986年 | 66篇 |
1985年 | 99篇 |
1984年 | 99篇 |
1983年 | 77篇 |
1982年 | 73篇 |
1981年 | 63篇 |
1980年 | 80篇 |
1979年 | 64篇 |
1978年 | 53篇 |
1977年 | 41篇 |
1976年 | 42篇 |
1975年 | 32篇 |
1974年 | 29篇 |
1973年 | 37篇 |
排序方式: 共有7032条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
Jackknifing Bond Option Prices 总被引:2,自引:0,他引:2
Prices of interest rate derivative securities depend cruciallyon the mean reversion parameters of the underlying diffusions.These parameters are subject to estimation bias when standardmethods are used. The estimation bias can be substantial evenin very large samples and much more serious than the discretizationbias, and it translates into a bias in pricing bond optionsand other derivative securities that is important in practicalwork. This article proposes a very general and computationallyinexpensive method of bias reduction that is based on Quenouille's(1956; Biometrika, 43, 353360) jackknife. We show howthe method can be applied directly to the options price itselfas well as the coefficients in the models. We investigate itsperformance in a Monte Carlo study. Empirical applications toU.S. dollar swap rates highlight the differences between bondand option prices implied by the jackknife procedure and thoseimplied by the standard approach. These differences are largeand suggest that bias reduction in pricing options is importantin practical applications. 相似文献
35.
区域电力市场的十大障碍及其对策 总被引:1,自引:0,他引:1
中国迄今已经在电力改革方面取得了很大进展.目前所处的行业重组阶段,旨在为建立竞争性电力市场奠定必要的基础.尽管最初的省级电力市场试点为提高行业的经济和技术水平创造了条件,但建立区域电力市场以优化资源配置和提高效率的潜力显然更大.但是,建立区域电力市场的难度远大于建立省级电力市场.本文讨论在中国建立区域电力市场的障碍因素及其可以采取的应对措施. 相似文献
36.
37.
Conclusion It has been argued that Design and Technology teachers would be helped by clear distinction between the terms, industry, business and economic. This would help to avoid the confusion between particular ways of viewing business (eg. through an economic concept such as profit maximisation;) and the multi-faceted character of the activity under observation. By this reasoning, the economic dimension of Design and Technology resides in the analysis of needs and the evaluation of products according to the value of the resources used up, and the value and distribution of the resources and products created. The link with discussion of value judgements in the subject (eg. Riggs and Conway, 1991) is very clear. So also is the dependence of this analysis on the definition of needs and evaluation and, crucially, the perceived relationship between the two, in learning and classroom practice. 相似文献
38.
39.
40.
This paper proposes a new perspective on systematic deviations from purchasing power parity. Panel evidence for OECD countries shows that international financial integration increases the national price level under managed exchange rate regimes and lowers the price level under floating exchange rates. An open economy sticky-price model reproduces these findings by relating them to the possibility of insurance against consumption losses in internationally integrated financial markets. The utilization of insurance is reflected by relative price adjustments which manifest themselves in changes of the national price level. The direction of relative price adjustments, however, depends on the extent to which insurance is used under different exchange rate regimes: under a peg, financial integration raises the national price level; under a float, however, financial integration lowers the national price level. 相似文献