全文获取类型
收费全文 | 14151篇 |
免费 | 329篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 2655篇 |
工业经济 | 1200篇 |
计划管理 | 2398篇 |
经济学 | 3096篇 |
综合类 | 185篇 |
运输经济 | 105篇 |
旅游经济 | 199篇 |
贸易经济 | 2357篇 |
农业经济 | 702篇 |
经济概况 | 1576篇 |
信息产业经济 | 2篇 |
邮电经济 | 6篇 |
出版年
2021年 | 85篇 |
2020年 | 158篇 |
2019年 | 227篇 |
2018年 | 255篇 |
2017年 | 264篇 |
2016年 | 260篇 |
2015年 | 181篇 |
2014年 | 288篇 |
2013年 | 1370篇 |
2012年 | 405篇 |
2011年 | 459篇 |
2010年 | 410篇 |
2009年 | 453篇 |
2008年 | 367篇 |
2007年 | 429篇 |
2006年 | 357篇 |
2005年 | 294篇 |
2004年 | 310篇 |
2003年 | 279篇 |
2002年 | 320篇 |
2001年 | 266篇 |
2000年 | 290篇 |
1999年 | 263篇 |
1998年 | 271篇 |
1997年 | 256篇 |
1996年 | 250篇 |
1995年 | 228篇 |
1994年 | 224篇 |
1993年 | 229篇 |
1992年 | 265篇 |
1991年 | 243篇 |
1990年 | 197篇 |
1989年 | 173篇 |
1988年 | 165篇 |
1987年 | 207篇 |
1986年 | 197篇 |
1985年 | 277篇 |
1984年 | 299篇 |
1983年 | 284篇 |
1982年 | 239篇 |
1981年 | 240篇 |
1980年 | 228篇 |
1979年 | 244篇 |
1978年 | 154篇 |
1977年 | 146篇 |
1976年 | 104篇 |
1975年 | 133篇 |
1974年 | 96篇 |
1973年 | 95篇 |
1971年 | 78篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
The purpose of this study was to assess the basis behavior of the Live Cattle Futures contract at the Chicago Mercantile Exchange (CME) before and after the 1995 contract changes. Additionally, an alternative method of basis calculation utilizing weighted mean futures prices versus settlement futures prices was compared to determine which method provides a better representation of the basis level. Within a regression model with heteroskedascity error framework, we found that the level of nearby basis in the period after June 1995 has shifted lower and the average monthly open interest of net commercial long positions has substantially increased after the contract modifications. These empirical results are consistent with the notion that more long activity entered the market in response to the contract modifications. Additionally, an alternative (new) measure of basis calculation (cash price minus weighted mean futures price) produced similar results to two other commonly used measures. In conclusion, the 1995 contract changes have neither increased nor decreased the volatility of live cattle basis. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:557–590, 2004 相似文献
12.
John C. Taylor Stanley E. Fawcett George C. Jackson 《Journal of Business Logistics》2004,25(2):119-137
The purpose of this article is to study the level of “in‐stock” customer service performance being offered in the catalog channel of distribution. The article provides benchmark information for the catalog industry. More importantly, the article serves as one test of the effectiveness of the modern supply chain, where the expectation is for near perfect orders. Customer service levels are studied by using an empirical observation methodology in which catalog retailer's in‐stock performance was measured. Comparisons are made across item type, season, retailer type, and days from catalog receipt. Overall, items were out‐of‐stock during 15.9% of all checkpoints, compared to an 11.8% stock‐out rate in an earlier study of bricks and mortar retailers. 相似文献
13.
14.
Several papers have been published demonstrating the positive effects a single, reputable ally has on evaluations of a focal brand. Interestingly, little research has been published examining the effects of multiple brand allies. We examine the effect of an alliance with two, one, or zero well-known brand allies on evaluations of a previously unknown focal brand. The presence of a single brand ally significantly increased perceived quality and hedonic and utilitarian attitudes. While multiple alliances improved focal brand evaluations relative to the no ally condition, the second ally did not increase evaluations relative to the single ally condition. 相似文献
15.
In this paper we investigate the use of the structured full rank model for hedging the balance sheet of a financial institution. Simulation results suggest that the optimal hedge is insensitive to changes in parameter estimates. In addition, we hedge a portfolio of Treasury bills using both the full information covariance matrix and the structured covariance matrix. We then contrast these results with those obtained from a duration-based model. Empirical results suggest that the structured full rank model is generally more effective in hedging applications than either the full information model or duration-based model. 相似文献
16.
17.
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
18.
A commercial environment is clearly good for contemporary popular music but can ‘art’ music flourish in such an environment? In the past art music has prospered on a commercial basis and there are advantages in exposing art to commerce. For example, commercial patronage is likely to be more diverse and allow more room for experimentation than a single patron or subsidising body. Moreover, commerce encourages two‐way communication between artist and audience. 相似文献
19.
We develop a method for determining the significance of the effect of a certain event (stock split, corporate restructuring, change in regulation, etc.) on unsystematic volatility of asset returns. Simulations show that the suggested tests reject the true null hypothesis of no effect on volatility at appropriate levels, whereas the rejection rates of a false null hypothesis increase with the magnitude of the effect. An application of the method to corporate spin‐offs reveals statistically significant and long‐lasting estimated increases in unsystematic volatility of parent companies' returns. 相似文献
20.
Extant empirical research has reported nonlinear behavior within arbitrage relationships. In this article, the authors consider potential nonlinear dynamics within FTSE‐100 index and index‐futures. Such nonlinearity can be rationalized by the existence of transactions costs or through the interaction between informed and noise traders. They consider several empirical models designed to capture these alternative dynamics. Their empirical results provide evidence of a stationary basis term, and thus cointegration between index and index‐futures, and the presence of nonlinear dynamics within that relationship. The results further suggest that noise traders typically engage in momentum trading and are more prone to this behavior type when the underlying market is rising. Fundamental, or arbitrage, traders are characterized by heterogeneity, such that there is slow movement between regimes of behavior. In particular, fundamental traders act more quickly in response to small deviations from equilibrium, but are reluctant to act quickly in response to larger mispricings that are exposed to greater noise trader price risk. © 2006 Wiley Periodicals, Inc. Jrl Fut Mark 26:343–368, 2006 相似文献