全文获取类型
收费全文 | 6692篇 |
免费 | 249篇 |
专业分类
财政金融 | 1412篇 |
工业经济 | 519篇 |
计划管理 | 1071篇 |
经济学 | 1461篇 |
综合类 | 100篇 |
运输经济 | 56篇 |
旅游经济 | 139篇 |
贸易经济 | 1227篇 |
农业经济 | 318篇 |
经济概况 | 634篇 |
邮电经济 | 4篇 |
出版年
2023年 | 43篇 |
2021年 | 60篇 |
2020年 | 129篇 |
2019年 | 154篇 |
2018年 | 182篇 |
2017年 | 185篇 |
2016年 | 165篇 |
2015年 | 131篇 |
2014年 | 173篇 |
2013年 | 797篇 |
2012年 | 201篇 |
2011年 | 272篇 |
2010年 | 220篇 |
2009年 | 254篇 |
2008年 | 225篇 |
2007年 | 213篇 |
2006年 | 165篇 |
2005年 | 181篇 |
2004年 | 160篇 |
2003年 | 171篇 |
2002年 | 175篇 |
2001年 | 124篇 |
2000年 | 147篇 |
1999年 | 144篇 |
1998年 | 144篇 |
1997年 | 128篇 |
1996年 | 103篇 |
1995年 | 114篇 |
1994年 | 94篇 |
1993年 | 85篇 |
1992年 | 75篇 |
1991年 | 85篇 |
1990年 | 76篇 |
1989年 | 58篇 |
1988年 | 61篇 |
1987年 | 57篇 |
1986年 | 72篇 |
1985年 | 103篇 |
1984年 | 101篇 |
1983年 | 99篇 |
1982年 | 83篇 |
1981年 | 75篇 |
1980年 | 77篇 |
1979年 | 70篇 |
1978年 | 77篇 |
1977年 | 71篇 |
1976年 | 69篇 |
1975年 | 62篇 |
1974年 | 58篇 |
1973年 | 39篇 |
排序方式: 共有6941条查询结果,搜索用时 31 毫秒
41.
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
42.
Matthew Odedokun 《The World Economy》2004,27(2):239-263
This paper examines a wide range of issues relating to the mix between loans and grants as well as the degree of concessionality of loans. A number of empirical tests are carried out based on annual panel data over 1970 to 1999 for 22 donor countries and 72 recipient countries. Based on the tests, we observe that for bilateral donors, past grant‐loan mix (and, hence, reflows from past transfers) do not influence the volume of current resource transfers. Our tests also show that the rate of official borrowing by the recipients (and, by deduction, the extent of their past debt burden) is positively influenced by the extent of the concessionality of such loans – irrespective of whether it is in the form of subsidised interest rates or longer grace periods. The paper concludes with a review of the circumstances in which grants, soft loans and non‐concessional loans might have their respective comparative advantage, as well as a discussion of the need, so as to overcome the negative incentive problems of soft loans, for a typical concessional loan package to be separated into two constituent parts. This would enable the recipient to be given the grant component and the option to take from the non‐concessional loan component as much as desired. 相似文献
43.
Vendor Managed Inventory (VMI) involves the vendor making the replenishment decision for products supplied to a customer based on various inventory and supply chain policies. Information sharing between supply chain members is required in VMI. Sometimes VMI decisions are delayed and/or the information shared is inaccurate. This research examines the effects of information delay and accuracy, and the sharing of sales and forecast information in a VMI environment facing stationary and nonstationary demand. The simulation experiments show the impact of information delay, information inaccuracy, and information sharing on a variety of performance measures, including inventory levels and fill rates. 相似文献
44.
Cross‐docking replaces traditional warehousing, enabling continuous flow of items without storage. Here we model location‐distribution networks, that include cross‐docking facilities, to obtain the latter's impact on the supply chain. We formulate optimization models to minimize total cost in three multi‐echelon networks, each model generalizing the preceding one. The first includes a single manufacturer, one product type, and multiple customers. Cross‐docks are to be located between origin and destinations. Besides solving optimally, a tool for quantitative analysis of direct‐shipment decisions is developed. The second model considers more than one product: We determine a cost‐effective sequence of items for indirect shipment (via cross‐docks). Finally, in a network with multiple origins, optimal solutions are obtained for 40 medium‐sized and larger examples. 相似文献
45.
46.
47.
48.
This paper examines the potential impacts of U.S. mandatory country of origin labeling. North American hog and pork markets are represented as vertically related in a partial equilibrium non-spatial model. A synthetic model is calibrated to historic data and then used to trace the program's added costs as they are passed through the market to determine who wins and who loses. The transactions costs reduce the welfare of all agents in the United States. Canadian welfare depends primarily on whether mixed supply chains continue to be accepted in the United States and trade in hogs continues. A closed border significantly reduces the welfare of Canadian hog producers and increases the welfare of Canadian pork processors.
Le présent article porte sur les répercussions éventuelles de l'étiquetage obligatoire du pays d'origine réclamée par les États‐Unis. Les marchés nord-américains du porc vivant et de la viande de porc sont représentés comme étant verticalement liés dans un modèle non spatial d'équilibre partiel. Un modèle synthétique est étalonné avec des données historiques et est ensuite utilisé pour déterminer les coûts supplémentaires qu'occasionne le programme à mesure qu'ils sont répartis sur le marché pour déterminer les gagnants et les perdants. Les coûts de transaction diminuent le bien‐être de tous les agents aux États‐Unis. Le bien-être au Canada dépend principalement de l'acceptation ou non des chaînes d'approvisionnement mixtes et de la continuité ou non du commerce du porc vivant. La fermeture des frontières diminue considérablement le bien-être des producteurs de porcs canadiens et augmente celui des transformateurs de porcs canadiens. 相似文献
Le présent article porte sur les répercussions éventuelles de l'étiquetage obligatoire du pays d'origine réclamée par les États‐Unis. Les marchés nord-américains du porc vivant et de la viande de porc sont représentés comme étant verticalement liés dans un modèle non spatial d'équilibre partiel. Un modèle synthétique est étalonné avec des données historiques et est ensuite utilisé pour déterminer les coûts supplémentaires qu'occasionne le programme à mesure qu'ils sont répartis sur le marché pour déterminer les gagnants et les perdants. Les coûts de transaction diminuent le bien‐être de tous les agents aux États‐Unis. Le bien-être au Canada dépend principalement de l'acceptation ou non des chaînes d'approvisionnement mixtes et de la continuité ou non du commerce du porc vivant. La fermeture des frontières diminue considérablement le bien-être des producteurs de porcs canadiens et augmente celui des transformateurs de porcs canadiens. 相似文献
49.
The structure of marketing channel relationships 总被引:3,自引:0,他引:3
Distribution channel research has been advanced in recent years by contributions based on the political economy paradigm,
transaction cost analysis, and relationship marketing. Drawing on these bodies of thought, we propose a new conceptualization
of the structure of marketing channel relationships. Relationship structure is defined in terms of decision-making structure
and operational integration. The proposed model of channel structure antecedents and consequences is consistent with the major
research paradigms but extends beyond simple categorical assemblages of constructs to provide an ordered set of relationships
based on theory and empirical research. This conceptualization reconciles some apparent contradictions in the literature and
provides a clear focus for structure, process, and performance research in channels.
He received his Ph.D. in marketing from Louisiana State University. He has published in the areas of marketing channels, retailing,
and logistics. His work has appeared in theJournal of Marketing Research, Journal of Marketing, Journal of Retailing, Journal of Business Research, Journal of Marketing
Channels, International Journal of Physical Distribution and Materials Management, Journal of Marketing Education, and others.
He served as the managing director of public relations with the Federal Express Corporation before entering the Ph.D. program
at Alabama. He holds a B.B.A. in accountancy from the University of Mississippi and an M.A. in marketing from the University
of Alabama. 相似文献
50.
Blinder (1998) argues that more open public disclosure of central bank policies may enhance the efficiency of markets. We
examine this claim by studying whether the Federal Reserve System's 1994 policy shift toward more open disclosure improved
or worsened the predictability of financial markets. Employing methods analogous to Campbell and Shiller (1991), we find that
since 1994, the forecasting error has decreased for interest rates on U.S. bonds of most maturity lengths, and that the expectations
hypothesis has performed better at the low end of the yield curve. These findings are inconsistent with the view that increased
central bank transparency will decrease the efficiency of financial markets.
The authors would like to thank participants of the 2001 Midwest Macroeconomics Conference and 2001 Missouri Economics Conference
for their helpful comments and suggestions. All errors are, of course, the author's. 相似文献