全文获取类型
收费全文 | 2640篇 |
免费 | 52篇 |
专业分类
财政金融 | 612篇 |
工业经济 | 252篇 |
计划管理 | 417篇 |
经济学 | 478篇 |
综合类 | 58篇 |
运输经济 | 15篇 |
旅游经济 | 43篇 |
贸易经济 | 488篇 |
农业经济 | 143篇 |
经济概况 | 186篇 |
出版年
2021年 | 13篇 |
2020年 | 41篇 |
2019年 | 64篇 |
2018年 | 59篇 |
2017年 | 56篇 |
2016年 | 53篇 |
2015年 | 23篇 |
2014年 | 65篇 |
2013年 | 295篇 |
2012年 | 85篇 |
2011年 | 93篇 |
2010年 | 76篇 |
2009年 | 84篇 |
2008年 | 101篇 |
2007年 | 88篇 |
2006年 | 79篇 |
2005年 | 64篇 |
2004年 | 62篇 |
2003年 | 55篇 |
2002年 | 61篇 |
2001年 | 59篇 |
2000年 | 52篇 |
1999年 | 48篇 |
1998年 | 45篇 |
1997年 | 35篇 |
1996年 | 47篇 |
1995年 | 27篇 |
1994年 | 37篇 |
1993年 | 30篇 |
1992年 | 36篇 |
1991年 | 41篇 |
1990年 | 24篇 |
1989年 | 40篇 |
1988年 | 28篇 |
1987年 | 34篇 |
1986年 | 33篇 |
1985年 | 57篇 |
1984年 | 52篇 |
1983年 | 38篇 |
1982年 | 47篇 |
1981年 | 29篇 |
1980年 | 26篇 |
1979年 | 24篇 |
1978年 | 26篇 |
1977年 | 32篇 |
1976年 | 26篇 |
1975年 | 28篇 |
1974年 | 35篇 |
1973年 | 21篇 |
1971年 | 14篇 |
排序方式: 共有2692条查询结果,搜索用时 0 毫秒
1.
2.
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
3.
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
4.
5.
6.
7.
8.
9.
10.
This paper is INTUG's response to the EEC's express wish to obtain a wide range of views from the community at large. It specifically handles each of the Green Paper's proposed positions, outlining them briefly and giving INTUG's attitudes to them. In general, INTUG welcomes the Green Paper, declaring a belief that it fulfills its purpose of provoking wide discussion, and trusting that it will result in a positive document committed to firm future plans. 相似文献