全文获取类型
收费全文 | 26682篇 |
免费 | 285篇 |
专业分类
财政金融 | 4571篇 |
工业经济 | 1726篇 |
计划管理 | 4227篇 |
经济学 | 6078篇 |
综合类 | 596篇 |
运输经济 | 81篇 |
旅游经济 | 201篇 |
贸易经济 | 6186篇 |
农业经济 | 543篇 |
经济概况 | 2139篇 |
信息产业经济 | 45篇 |
邮电经济 | 574篇 |
出版年
2023年 | 52篇 |
2021年 | 48篇 |
2020年 | 120篇 |
2019年 | 156篇 |
2018年 | 2433篇 |
2017年 | 2221篇 |
2016年 | 1380篇 |
2015年 | 227篇 |
2014年 | 289篇 |
2013年 | 1388篇 |
2012年 | 690篇 |
2011年 | 2271篇 |
2010年 | 2040篇 |
2009年 | 1798篇 |
2008年 | 1791篇 |
2007年 | 2129篇 |
2006年 | 384篇 |
2005年 | 669篇 |
2004年 | 723篇 |
2003年 | 833篇 |
2002年 | 542篇 |
2001年 | 314篇 |
2000年 | 269篇 |
1999年 | 222篇 |
1998年 | 246篇 |
1997年 | 220篇 |
1996年 | 210篇 |
1995年 | 163篇 |
1994年 | 151篇 |
1993年 | 177篇 |
1992年 | 158篇 |
1991年 | 155篇 |
1990年 | 130篇 |
1989年 | 113篇 |
1988年 | 115篇 |
1987年 | 99篇 |
1986年 | 130篇 |
1985年 | 180篇 |
1984年 | 195篇 |
1983年 | 154篇 |
1982年 | 159篇 |
1981年 | 148篇 |
1980年 | 155篇 |
1979年 | 152篇 |
1978年 | 107篇 |
1977年 | 105篇 |
1976年 | 98篇 |
1975年 | 73篇 |
1974年 | 97篇 |
1973年 | 53篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
Imad Moosa 《Review of Quantitative Finance and Accounting》2011,37(3):267-281
When the interest rate on a currency that is pegged to a basket differs from the interest rate on the basket (as a weighted
average), it is possible to make profit from interest arbitrage by going short on the basket and long on the pegged currency,
or vice versa. This proposition is illustrated by using data on the Kuwaiti dinar and its basket currencies over the period
1998–2002 when the currency was pegged to a basket. Monte Carlo simulations show that the probability of making arbitrage
profit from any single operation is about 95%. 相似文献
942.
Shinichi Yamaguchi Kotaro Iyanaga Hirohide Sakaguchi Tatsuo Tanaka 《The Review of Socionetwork Strategies》2017,11(2):95-110
In this paper, we discuss the substitution effects between mobile games and console games. We estimate such effects by a fixed-effect regression with instrumental variables using panel data of about 100,000 observations. The results showed that the substitution effects of playing smart devices on 3DS, Wii, and PSP were recognizable, but did not have significant effects on PS3, and the substitution effects on PSP were very small. Therefore, mobile games had a substitution effect on casual console games, or on console games in which the play situation resembled mobile games. In addition, the substitution effects were at most about 0.1. The substitution effects were small. Our results indicate that mobile games represent the pioneers in the new market of gaming at least during our observation period. But new games and traditional games will coexist for a while. 相似文献
943.
944.
945.
946.
Fabian Krüger 《Empirical Economics》2017,53(1):235-246
Ensemble methods can be used to construct a forecast distribution from a collection of point forecasts. They are used extensively in meteorology, but have received little direct attention in economics. In a real-time analysis of the ECB’s Survey of Professional Forecasters, we compare ensemble methods to histogram-based forecast distributions of GDP growth and inflation in the Euro Area. We find that ensembles perform very similarly to histograms, while being simpler to handle in practice. Given the wide availability of surveys that collect point forecasts but not histograms, these results suggest that ensembles deserve further investigation in economics. 相似文献
947.
948.
This study explores gender differences in positive perceptions, anxiety, and depression among mothers and fathers of children with intellectual disabilities (IDs). We examined the relationship between these variables and certain characteristics of both the child (age and severity of disability) and the parents (age, educational level, and employment status). A sample of 60 mother/father couples who had children with IDs completed the Positive Contributions Scale to measure their positive perceptions, and the Hospital Anxiety and Depression Scale to assess their level of anxiety and depression. Bivariate analyses were used to determine differences between fathers and mothers as regards their positive perceptions and levels of anxiety and depression. A logistic regression model was then applied to identify which of the variables might be significant predictors of the gender differences observed among parents. Both mothers and fathers had positive perceptions of their children with IDs that co-existed with symptoms of anxiety and depression, with scores being higher among mothers. The predictive analysis of gender showed that individual variables (such as the employment status of both parents) may explain these differences. 相似文献
949.
Effects of direct flights on trade costs are investigated using micro price data at the city level. After controlling for local retail/distribution costs, traded input prices are obtained to be further used in the measurement of trade costs across cities through arbitrage conditions. The existence of a direct flight enters trade costs regressions negatively and significantly. The results are shown to be robust to the consideration of many control variables, nonlinearities in the effects of distance on trade costs, possible endogeneity of having direct flights between cities and alternative definitions of the data. The direct flights that are shown to be determined by bilateral air services agreements are further shown to reduce trade costs through an endogeneity analysis; the main policy implications are twofold: (i) international trade policies through aviation services, such as Open Skies Agreements of the US, are alternative trade policy tools to reduce international trade barriers; (ii) direct flights facilitate the integration of internal markets as in the case of European Union. 相似文献
950.
John C. Whitehead Peter A. Groothuis Thomas J. Hoban William B. Clifford 《Leisure Sciences: An Interdisciplinary Journal》2013,35(4):249-258
Abstract This article compares various methods for correcting contingent valuation aggregate benefits when the sample is known to be biased. A sample is defined as the population, and response rates are simulated on the basis of a measure of salience. The simulated response rates suffer from nonresponse bias and selection bias. Coefficient and benefit estimates that result from weighting and self‐selection correction approaches are compared with the true coefficient and benefit estimates. Our results indicate that at both low and high response rates the standard approach leads to bias, and either correction approach will reduce the bias in coefficient and benefit estimates. 相似文献