Simplified Alonso–Mills–Muth model with a monopoly vendor

One important but unrealistic assumption in the simplified Alonso–Mills–Muth (AMM(0)) model is that the composite good is ubiquitous and thus there is zero shopping cost for residents. This paper assumes that the composite good is only sold by a monopoly vendor inside the city and hence a shopping cost is inevitable for residents. It is shown that the vendor will locate at the city boundary in equilibrium. In contrast to the symmetric land rent pattern in the AMM(0) model, the current AMM(k) model offers an asymmetric land rent pattern in equilibrium. Moreover, this paper shows that a rent-maximizing government either regulates the vendor to locate at the central business district (CBD) (when income is high) or does not enact any regulation (when income is low).     

(In)determinacy, increasing returns, and the optimality of the Friedman rule in an endogenously growing open economy

This paper sets up a monetary endogenous growth model with Benhabib–Farmer production externalities for an open economy, and then uses it to investigate the possibility of indeterminacy. Moreover, the paper examines how the monetary authorities will set its optimal anchor of the money growth rate from the viewpoint of welfare maximization. Several main findings emerge from the analysis. First, when investment does not involve adjustment costs, the monetary equilibrium is locally determinate regardless of the strength of the labor externality and the extent of world capital market imperfections. Second, in the presence of investment adjustment costs, the monetary equilibrium may exhibit indeterminacy when the aggregate increasing returns-to-scale in production is sufficiently strong. Third, in the presence of world capital market imperfections, the Friedman rule of a zero nominal interest rate fails to be optimal. Fourth, in the face of perfect world capital markets, the optimal nominal money growth rate is maintained at the rate that is conformable to the Friedman rule, regardless of whether investment involves adjustment costs or not.     

Latent class models of international air carrier choice

This paper uses a market segmentation approach to identify airline passengers’ potential segments and preferences toward international air carriers. The modeling approaches consist of the stated preference method and the latent class model. The stated choice experiments were designed based on service attributes in the international airline choice context. Empirical data was collected from airline passengers who have flown from Taipei to Tokyo or from Taipei to Hong Kong. The latent class model accommodating preference heterogeneity outperforms the multinomial logit model as indication of a better approach to analyze airline choice behavior. The latent class model with individual socioeconomic and trip characteristics in segment membership functions also improved model fit relative to the corresponding latent class model without individual characteristics. The values of willingness to pay for service attribute improvements vary across international air routes and segments. Passengers are willing to pay more for better service quality. In order to develop effective marketing and operational strategies for the international air travel market, this study highlights the importance of exploring airline choice behaviors by routes and segments.     

铀矿石生物浸出机理及国内外工艺应用研究现状

铀的生物浸出工艺主要有生物堆浸工艺,生物地浸工艺和生物槽浸工艺.微生物对铀矿的浸出主要以间接作用为主,Fe2+是铀矿氧化反应的电子传递者.生物浸出铀可以减少酸用量,提供硫酸高铁代替双氧水或过氧硫酸(盐)等氧化剂,可用于多种不同的浸出方式中,强化浸出过程,改善铀浸出动力学,提高铀浸出率,有利于环境保护.     

运用案例教学法提高CorelDraw教学效果

CorelDraw在平面设计领域中具有重要作用,是中职学校计算机及一些工科专业的主干课程。其基础性、工具性、实践性、应用性,创造性的特点为广大学生所喜爱,但真正能做到将需要表达的平面信息表现得淋漓尽致,却成为制约教师授课和学生学习的难点。本文就"5W"理论、案例教学法、主题设计教学法在CorelDraw教学中的运用作简要论述。     

浅谈高含硫天然气采输工艺技术

简要介绍了高含硫气田硫化氢的危害性及其腐蚀机理,概述了高含硫气田集输工艺技术。回顾了国内外高含硫天然气的集输工艺成熟技术的应用,并阐述了国内新技术的推广与应用情况,对我国高含硫集气工艺发展方向、重点技术进行了展望。     

出入境检验检疫技术机构改革方案的探讨

根据国务院下发的《分类推进事业单位改革实施指导意见》、国家质量监督检验检疫总局印发的《检验检疫实验室管理办法》以及检验检疫检测机构发展需求分析,探讨出入境检验检疫技术机构改革方案。详述三种出入境检验检疫技术机构改革方案的可行性和具体措施。     

高管政治背景与民营企业盈利能力的实证研究

本文以我国2003—2007年在沪深交易所上市的民营企业为样本,实证研究了政治关系对民营企业盈利能力的影响,结果发现,高管的政治背景对公司盈利能力有显著的正面影响。进一步的研究还发现,高管的地方政治背景对公司盈利能力的正面影响要比中央政治背景的影响显著,而且董事长（副董事长）的政治背景对公司盈利能力的正面影响要比总经理的政治背景的影响显著。这些结果表明,政治关系是一种有价值的资源,有利于民营企业的发展。     

我国“双反”措施的产业救济效果与福利效应——基于可计算局部均衡COMPAS模型的研究

本文利用可计算局部均衡COMPAS模型,基于2005～2009年我国鸡肉产品生产与进口的有关数据,就我国对美国白羽肉鸡产品反倾销、反补贴税的产业救济效果、福利效应等进行了实证模拟。模拟结果表明:在未来5年里,我国对美国白羽肉鸡产品的反倾销、反补贴税将使我国白羽肉鸡行业的产量和就业增加近26%,销售收入增加38.4%;但是,"双反"措施也将导致我国市场鸡肉价格大约上涨9.8%,消费量下降2.8%,消费者福利损失近10亿美元。     

The Hong Kong Fish Marketing Organization

This essay provides an explanation of the phenomenon of an apparent secular fall in captured fisheries outputs in Hong Kong transacted through the Fish Marketing Organisation. The latter is a government monopoly, with the power to compel sale of landed fish through its licensed buyers, established and protected by law. The institutional characteristic of this organisation can also explain the evolution of marine fish culture industry in the area that is not subject to the forced‐sale regulation of the Organisation, and the diversity of species commonly observed in the consumer market of cultured fish. The observed reduction in fisheries output in Hong Kong can be the consequence of regulation rather than a lack of regulation, as the ‘the tragedy of commons’ would seem to imply. Our analysis also demonstrates why the Fish Marketing Organisation has suffered from a growing budgetary deficit in recent years.