全文获取类型
收费全文 | 8793篇 |
免费 | 334篇 |
专业分类
财政金融 | 1866篇 |
工业经济 | 769篇 |
计划管理 | 1441篇 |
经济学 | 1833篇 |
综合类 | 115篇 |
运输经济 | 100篇 |
旅游经济 | 167篇 |
贸易经济 | 1866篇 |
农业经济 | 264篇 |
经济概况 | 634篇 |
信息产业经济 | 4篇 |
邮电经济 | 68篇 |
出版年
2023年 | 59篇 |
2022年 | 49篇 |
2021年 | 82篇 |
2020年 | 134篇 |
2019年 | 210篇 |
2018年 | 234篇 |
2017年 | 257篇 |
2016年 | 221篇 |
2015年 | 184篇 |
2014年 | 294篇 |
2013年 | 1052篇 |
2012年 | 329篇 |
2011年 | 371篇 |
2010年 | 345篇 |
2009年 | 388篇 |
2008年 | 343篇 |
2007年 | 297篇 |
2006年 | 274篇 |
2005年 | 299篇 |
2004年 | 250篇 |
2003年 | 260篇 |
2002年 | 255篇 |
2001年 | 206篇 |
2000年 | 189篇 |
1999年 | 190篇 |
1998年 | 158篇 |
1997年 | 162篇 |
1996年 | 132篇 |
1995年 | 124篇 |
1994年 | 133篇 |
1993年 | 126篇 |
1992年 | 114篇 |
1991年 | 105篇 |
1990年 | 69篇 |
1989年 | 79篇 |
1988年 | 73篇 |
1987年 | 69篇 |
1986年 | 69篇 |
1985年 | 115篇 |
1984年 | 99篇 |
1983年 | 89篇 |
1982年 | 93篇 |
1981年 | 66篇 |
1980年 | 74篇 |
1979年 | 68篇 |
1978年 | 60篇 |
1977年 | 63篇 |
1976年 | 58篇 |
1974年 | 32篇 |
1973年 | 22篇 |
排序方式: 共有9127条查询结果,搜索用时 14 毫秒
101.
Pioneer brand advantage and consumer behavior: A conceptual framework and propositional inventory 总被引:1,自引:0,他引:1
What are the behavioral origins of pioneer brand advantage? This article provides an integrative conceptual framework and propositional inventory to help more fully understand this multifaceted phenomenon. It is proposed that there are three sources of entry-order information that work through various psychological processes and affect multiple decision process variables. The conceptual framework translates into eight testable propositions. New exploratory evidence is presented. Managerial implications are discussed. 相似文献
102.
Management Review Quarterly - Additive manufacturing (AM) is regarded as a technology that has transformative and disruptive potential in nearly all industries. However, AM is not only about new... 相似文献
103.
Socioeconomic predictors of forest use values in the Peruvian Amazon: A potential tool for biodiversity conservation 总被引:1,自引:0,他引:1
Conservation is a crisis discipline requiring rapid action with limited funds. This study examines the potential of socioeconomic variables to predict forest use values. If natural resource use can be predicted from socioeconomic data, conservation planners could rapidly identify and focus conservation programs on the sectors of local populations that most intensively utilize local flora and fauna. Families in three communities in the northern Peruvian Amazon were surveyed over a 6-month period. Data were collected on use of flora and fauna from six locally determined use categories (food, medicine and poisons, wood, weavings, adornments, and “other”) in forest types of three age classes (fallow fields—very young forests, young secondary forests, and old secondary forests). Forest use values were the dependant variables calculated in $/ha/year. Socioeconomic variables included: age, education, family size, residence time, land worked, land owned, number of fishing nets, chickens, pigs, cows, and/or mules owned (all proxies for productive assets), and level of ecological knowledge (ability of informants to correctly identify forest species and answer basic questions about their biology). Ordinary least square multiple regressions were run independently for each forest type. Regressions were also run separately for the two most valuable use categories, food and wood. Low R2 adjusted values (all < 0.3) reflect the difficulty in predicting human behavior due to confounding variables and complex interactions. Residence time and a household's community of residence were the most significant predictors of forest use values. Households in Vista Alegre, the community with the highest density of people and smallest landholdings per household, extracted the highest value of forest products per hectare. The longer a family stayed in any community the higher the value of forest goods they extracted. If families that lived in an area longest are the most intensive extractors of forest products, they should be a major focus for conservation programming. In addition, the higher value of products extracted from forests by some families may make them more open to strategies seeking to protect long-term viability of the resources they utilize. The importance of residence time also indicates that planners need to account for changes in the resource use patterns of stakeholders over time. 相似文献
104.
Physiological utility theory and the neuroeconomics of choice 总被引:5,自引:0,他引:5
105.
Summary. Simple search models have equilibria where some agents accept money and others do not. We argue such equilibria should not be taken seriously. This is unfortunate if one wants a model with partial acceptability. We introduce heterogeneous agents and show partial acceptability arises naturally and robustly. There can be multiple equilibria with different degrees of acceptability. Given the type of heterogeneity we allow, the model is simple: equilibria reduce to fixed points in [0,1]. We show that with other forms of heterogeneity equilibria are fixed points in set space, and there is no method to reduce this to a problem in R1.Received: 4 September 2002, Revised: 23 September 2002JEL Classification Numbers:
C78, E40.A. Shevchenko, R. Wright: We thank seminar participants at the Federal Reserve Bank of Cleveland, Indiana University, Purdue University, University of Toronto, the 2002 Midwest Macroeconomics Conference at Vanderbilt University, and the 2001 Conference on Economic Dynamics at the University of Essex. The National Science Foundation and the Federal Reserve Bank of Cleveland provided financial support. Braz Ministerio de Camargo and Gabriel Camera provided some helpful suggestions. Correspondence to: R. Wright 相似文献
106.
107.
Odd Godal Yuri Ermoliev Ger Klaassen Michael Obersteiner 《Environmental and Resource Economics》2003,25(2):151-169
The Kyoto Protocol foresees emission trading but does not yet specify verification of (uncertain) emissions. This paper analyses a setting in which parties can meet their emission targets by reducing emissions, by investing in monitoring (reducing uncertainty of emissions) or by (bilaterally) trading permits. We derive the optimality conditions and carry out various numerical simulations. Our applications suggest that including uncertainty could increase compliance costs for the USA, Japan and the European Union. Central Europe and the Former Soviet Union might be able to gain from trading due to higher permit prices. Emissions trading could also lower aggregate uncertainty on emissions. 相似文献
108.
The proper panel econometric specification of the gravity equation: A three-way model with bilateral interaction effects 总被引:6,自引:0,他引:6
We argue that the proper specification of a panel gravity model should include main (exporter, importer, and time) as well
as time invariant exporter-by-importer (bilateral) interaction effects. In a panel of 11 APEC countries, the latter are highly
significant and account for the largest part of variation.
First version received: February 2001/Final version received: June 2002
RID="*"
ID="*" We are grateful to two anonymous referees and Robert Kunst for their helpful comments. 相似文献
109.
110.
Summary. We analyze an oligopoly model of homogeneous product price competition that allows for discontinuities in demand and/or costs.
Conditions under which only zero profit equilibrium outcomes obtain in such settings are provided. We then illustrate through
a series of examples that the conditions provided are “tight” in the sense that their relaxation leads to positive profit
outcomes.
Received: April 7, 2000; revised version: September 14, 2000 相似文献