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61.
Johan Willner 《Empirica》2008,35(5):449-464
This contribution analyses a market with an upstream bottleneck monopoly and a downstream activity that may either be vertically
integrated or separated. Separation always reduces the consumer surplus, and the total surplus unless there are large cost
reductions. Downstream competition from a public or private network monopoly would crowd out other firms, also when public
ownership is associated with more modest objectives than welfare-maximisation. A market is therefore less likely to remain
a mixed oligopoly than without vertical relations. However, private firms would survive in a moderately welfare-improving
mixed oligopoly with cross-subsidisation and access charges equal to marginal costs.
相似文献
Johan WillnerEmail: |
62.
物流系统混沌边界确定及其模型效应分析 总被引:1,自引:0,他引:1
混沌理论作为解决经济系统中存在的大量非线性问题的一种全新研究方法,借助其非线性动力学模型对物流系统这一典型非线性复杂经济系统边界进行界定,有助于物流系统的正常运行.物流系统涉及交通运输、工业生产、商贸流通、邮政通信等各行各业,并受经济政策、产业环境及社会环境等诸方面因素的影响,必须按系统、分层次明确各级物流系统(企业物流系统、区域物流系统、物流供应链跨行业混序系统和社会物流大系统)的边界范围及其所包含的要素,并以此为基础分析物流系统的混沌特性和范围界定.文章通过测度系统的熵对系统是否产生混沌进行判定,能够对企业物流系统状态进行定量化描述,表征企业系统状态的复杂与有序程度,确定物流系统内部的不确定性,可以有效控制物流系统,实现物流系统经济效益的最大化. 相似文献
63.
The Panzar–Rosse H statistic is a commonly used measure of market power in banking. It is widely believed that is inconsistent with significant market power. This study rigorously disproves that perception. Instead, the possibility of under conditions of substantial market power turns out robust to the timing of banks’ actions, relative costs, choice of strategic variable, degree of product differentiation, strategy (static or dynamic), and degree of heterogeneity in banks’ conduct (collusive versus fringe), and hence may be common in practice. 相似文献
64.
The purpose of this paper is to provide evidence that the debate between quantitative and qualitative is divisive and, hence, counterproductive for advancing the social and behavioral science field. We advocate that all graduate students learn to utilize and to appreciate both quantitative and qualitative research methodologies. As such, students will develop into pragmatist researchers who are able to utilize both quantitative and qualitative techniques when conducting research. We contend that the best way to accomplish this is by eliminating quantitative research methodology and qualitative research methodology courses from curricula and replacing these with research methodology courses at different levels that simultaneously teach both quantitative and qualitative techniques within a mixed methodological framework.An earlier version of this article received the 2003 Southwest Educational Research Association (SERA) Outstanding Paper Award. 相似文献
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67.
作为传统寡占理论与我国国情相结合的产物,国有寡占市场受到越来越多的关注。本文以风险厌恶倾向为切入点,从缺少职业经理人市场、优越的生存环境和目标多重性三方面分析了国有寡占企业风险厌恶倾向的成因,并构建理论模型分析这种风险厌恶倾向对国有寡占市场资源配置效率的影响。结果表明,风险厌恶倾向使国有寡占企业面对成本风险时,价格和产量相对利润最大化值分别升高和降低,面对需求风险时,价格和产量同时低于利润最大化值,两种情况都使国有寡占市场资源配置效率降低,而固定成本的升高会进一步加大资源配置效率的损失。本文最后以我国石化行业成品油市场为案例,验证理论模型的结论,并提出了政策建议。 相似文献
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目前中国存在许多提供同类不同质产品的寡头垄断型产业,其产品定价问题一直是学术界和公众关心的焦点。本文使用经济仿真的理论与方法,以SWARM为工具,建立仿真模型对这一问题进行研究,得出了应当鼓励多种异质产品进行竞争以提高社会福利的结论。 相似文献
70.
Nobuko Kawashima 《Public Management Review》2013,15(2):157-178
This article investigates the extent to which ‘privatization’ has taken place in museum services provided by local authorities in Britain. Three aspects of privatization are examined: change in the legal status of museums to charitable trusts; contracting-in and buying-in private service providers for specific work; and market- and marketing-orientation. All of these have a resonance in new public management in general and are of increasing significance to the international museum community. In the empirical site chosen for this article, privatization has progressed in varying degrees in relation to the three areas concerned, but overall only to a limited extent despite central government's pressure promoting this policy. Reasons suggested for this gap between the political context and the findings are the distinctiveness in the institutional arrangement of policy and the nature of the service. A good understanding of a polrcy arena along these llnes is needed for effective policy application. 相似文献