GARCH options via local risk minimization

We apply a quadratic hedging scheme developed by Föllmer, Schweizer, and Sondermann to European contingent products whose underlying asset is modeled using a GARCH process and show that local risk-minimizing strategies with respect to the physical measure do exist, even though an associated minimal martingale measure is only available in the presence of bounded innovations. More importantly, since those local risk-minimizing strategies are in general convoluted and difficult to evaluate, we introduce Girsanov-like risk-neutral measures for the log-prices that yield more tractable and useful results. Regarding this subject, we focus on GARCH time series models with Gaussian innovations and we provide specific sufficient conditions concerning the finiteness of the kurtosis, under which those martingale measures are appropriate in the context of quadratic hedging. When this equivalent martingale measure is adapted to the price representation we are able to recover the classical pricing formulas of Duan and Heston and Nandi, as well as hedging schemes that improve the performance of those proposed in the literature.     

Pricing options on illiquid assets with liquid proxies using utility indifference and dynamic-static hedging

This work addresses the problem of optimal pricing and hedging of a European option on an illiquid asset Z using two proxies: a liquid asset S and a liquid European option on another liquid asset Y. We assume that the S-hedge is dynamic while the Y-hedge is static. Using the indifference pricing approach, we derive a Hamilton–Jacobi–Bellman equation for the value function. We solve this equation analytically (in quadrature) using an asymptotic expansion around the limit of perfect correlation between assets Y and Z. While in this paper we apply our framework to an incomplete market version of Merton’s credit-equity model, the same approach can be used for other asset classes (equity, commodity, FX, etc.), e.g. for pricing and hedging options with illiquid strikes or illiquid exotic options.     

Introducing a Learning Portfolio in an Undergraduate Financial Accounting Course

This paper evaluates changes made to the internal assessment component of a third year financial accounting course at a university in New Zealand. A learning portfolio was designed to supplement existing coursework. The aim was to engender in students a deep rather than a surface approach to learning. As a record of the students' learning, the learning portfolio was an attempt to produce an innovative development in the assessment of what was a traditionally taught financial accounting course. Within their learning portfolios, students were required to complete a number of tasks, each aimed at improving critical thinking skills and creativity. Students were also required to maintain a personal or reflective section aimed at personalising and deepening the quality of their learning.     

香港“轨道交通＋土地综合利用”模式的启示

香港＂轨道交通＋土地综合利用＂的模式是一种集地铁投资、建设、运营和沿线土地综合开发于一体的综合开发模式,是由港铁统筹开发的。从运作流程上分为项目谋划、项目明确、项目开发和项目运营四个阶段,在营造高效率的公共交通体系、促进土地高度集约、节约利用等方面都取得了明显效益。对我国城镇交通发展有五点启示和借鉴：（1）交通规划与土地规划同步进行、有机结合;（2）推进经营性土地有偿使用;（3）运用节地技术和模式,充分发挥土地的复合利用功能;（4）分层出让,实现土地利用的多元化价值;（5）拓展融资渠道,实现轨道交通多渠道投融资。     

植物隐喻英汉互译处理技巧

由于英汉两个民族有着不同的文化背景和思维方式,植物隐喻存在着相似性的同时也存在着差异。在英汉互译时,产生了可译性、相对可译性与不可译性的现象。译者应选择恰当的翻译方法和技巧,尽量准确地表达源语言的含义。     

Business Ethics and Moral Motivation: A Criminological Perspective

The prevalence of white-collar crime casts a long shadow over discussions in business ethics. One of the effects that has been the development of a strong emphasis upon questions of moral motivation within the field. Often in business ethics, there is no real dispute about the content of our moral obligations, the question is rather how to motivate people to respect them. This is a question that has been studied quite extensively by criminologists as well, yet their research has had little impact on the reflections of business ethicists. In this article, I attempt to show how a criminological perspective can help to illuminate some traditional questions in business ethics. I begin by explaining why criminologists reject three of the most popular folk theories of criminal motivation. I go on to discuss a more satisfactory theory, involving the so-called “techniques of neutralization,” and its implications for business ethics.

THE EFFECT OF ACCESS TO IMPROVED WATER SOURCES AND SANITATION ON ECONOMIC EFFICIENCY: THE CASE OF SUB‐SAHARAN AFRICAN COUNTRIES

This paper evaluates the effect of access to improved water sources and sanitation on 41 sub‐Saharan African (SSA) countries' economic efficiency and growth. For this reason data envelopment analysis (DEA), bootstrap techniques and probabilistic approaches are used. The empirical results indicate that SSA countries' economic efficiency is positively influenced by the access of population both on improved water sources and sanitation. Finally, when the provision of access to improved water sources is provided to more than 50% of the population, the positive effect on countries' economic efficiency is much greater compared with the effect of providing sustainable access to improved sanitation to the same proportion of population.     

以建构主义理论为基础的语言僵化实证研究

僵化是第二语言学习的普遍现象,但是在建构主义理论基础上针对僵化现象的实证研究并不多见。以建构主义理论为依据,通过分析、对比在实验前后的调查结果,探索建构主义学习论能否有效缓解或解决中介语僵化问题,从而为解决语言僵化现象提供有效的解决方法。