全文获取类型
收费全文 | 10469篇 |
免费 | 295篇 |
专业分类
财政金融 | 1990篇 |
工业经济 | 1002篇 |
计划管理 | 1721篇 |
经济学 | 2401篇 |
综合类 | 133篇 |
运输经济 | 80篇 |
旅游经济 | 200篇 |
贸易经济 | 1852篇 |
农业经济 | 552篇 |
经济概况 | 829篇 |
信息产业经济 | 2篇 |
邮电经济 | 2篇 |
出版年
2023年 | 52篇 |
2021年 | 51篇 |
2020年 | 124篇 |
2019年 | 157篇 |
2018年 | 171篇 |
2017年 | 205篇 |
2016年 | 208篇 |
2015年 | 139篇 |
2014年 | 208篇 |
2013年 | 1358篇 |
2012年 | 269篇 |
2011年 | 389篇 |
2010年 | 264篇 |
2009年 | 327篇 |
2008年 | 310篇 |
2007年 | 320篇 |
2006年 | 324篇 |
2005年 | 299篇 |
2004年 | 273篇 |
2003年 | 300篇 |
2002年 | 296篇 |
2001年 | 261篇 |
2000年 | 224篇 |
1999年 | 228篇 |
1998年 | 234篇 |
1997年 | 223篇 |
1996年 | 199篇 |
1995年 | 167篇 |
1994年 | 153篇 |
1993年 | 181篇 |
1992年 | 160篇 |
1991年 | 158篇 |
1990年 | 133篇 |
1989年 | 115篇 |
1988年 | 121篇 |
1987年 | 102篇 |
1986年 | 121篇 |
1985年 | 182篇 |
1984年 | 199篇 |
1983年 | 155篇 |
1982年 | 163篇 |
1981年 | 149篇 |
1980年 | 155篇 |
1979年 | 154篇 |
1978年 | 109篇 |
1977年 | 107篇 |
1976年 | 100篇 |
1975年 | 75篇 |
1974年 | 97篇 |
1973年 | 54篇 |
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
151.
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
152.
153.
Protecting human health is a primary goal of environmental policy and economic evaluation of health can help policy-makers judge the relative worth of alternative actions. Economists use two distinct approaches in normatively evaluating health. Whereas environmental economists use benefit-cost analysis supported by monetary valuation in terms of willingness-to-pay, health economists evaluate interventions based on cost-effectiveness or cost-utility analysis (CEA), using quality-adjusted life-years (QALY) or similar indexes. This paper provides background on the controversy about the relative merits of these approaches and introduces the remaining papers in the special issue. These papers (with one exception) were presented at a conference sponsored by the Department of Economics at the University of Central Florida with support from the US Environmental Protection Agency. Although CEA might not lead to substantially different implications for environmental policy than benefit-cost analysis, and QALY may provide a benefit transfer tool to fill gaps in the morbidity valuation literature, the papers in this issue raise serious concerns about the suitability of QALY-based CEA for environmental regulatory analysis. QALY does not in general appropriately represent individual preferences for health and CEA is neither independent of income distribution nor adequate to assess efficiency. 相似文献
154.
John?K.?StranlundEmail author Christopher?Costello Carlos?A.?Chávez 《Journal of Regulatory Economics》2005,28(2):181-204
We propose enforcement strategies for emissions trading programs with bankable emissions permits that guarantee complete compliance with minimal enforcement costs. Our strategies emphasize imperfect monitoring supported by a high unit penalty for reporting violations, and tying this penalty directly to equilibrium permit prices. This approach is quite different from several existing enforcement strategies that emphasize high unit penalties for emissions in excess of permit holdings. Our analysis suggests that a high penalty for excess emissions cannot be used to conserve monitoring effort, and that it may actually increase the amount of monitoring necessary to maintain compliance.The authors are grateful to Anthony Heyes and three anonymous referees for their valuable comments. Partial support for this research was provided by the Cooperative State Research Extension, Education Service, U. S. Department of Agriculture, Massachusetts Agricultural Experiment Station under Project No. MAS00871. 相似文献
155.
156.
JohnA.Caslione DavidK.Tse 《新经济》2003,(7):76-78
我们正看到一种趋势初露端倪.这种趋势将很快成为下个10年里中国商业战略的"主流".更多的有战略头脑的中国公司开始在全世界展开直接的兼并业务,尤其是在美国. 相似文献
157.
The purpose of this paper is twofold. The first is methodological. We review the Beveridge-Nelson technique for decomposing economic time series, and illustrate its usefulness for examining the cyclical and secular movements in real GDP in Colombia. Second, we examine government expenditures and revenues in order to assess the extent to which the sharp increase in the fiscal deficit in the early 1980s should be viewed as a cyclical rather than a secular phenomenon. 相似文献
158.
ABSTRACT ** : The use of performance indicators for the evaluation and comparison of efficiency in service provision in the public and related sectors of the economy is continuously developing. While they often represent a step forward, to the extent that they focus attention on the objectives of the organization in question, it is frequently suspected that they fail to take into account non-controllable environmental factors. To do so requires multivariate techniques of analysis. This paper compares the results of three such methods with the raw performance indicators. It confirms the importance of non-controllable factors but also shows that different multivariate methods give results which do not always agree. Understanding the properties of different approaches is essential in drawing conclusions about performance. 相似文献
159.
Individual bid functions display sensitivity to the strategic considerations inherent in first-price auctions. However, several formal models, including heterogeneous Nash equilibrium bidding models with constant relative risk aversion, perform quite poorly. 相似文献
160.
In this paper we estimate the willingness topay for a wolf management plan and a wolfdamage plan in Minnesota using the contingentvaluation method. The theoretical definition ofwillingness to pay for wolf protection iscomposed of use and non-use values. Weincorporate a don't know response option in thedichotomous choice valuation questions. A largenumber of respondents answered don't know. Themultinomial logit model is used todifferentiate between don't know and noresponses. Non-use motives are importantfactors that explain willingness to pay. We usethese benefit estimates in combination with twoalternative cost estimates to consider theefficiency of the wolf management and damageplans. Both plans have estimated benefitsgreater than costs. 相似文献