“Itô's Lemma” and the Bellman Equation for Poisson Processes: An Applied View

Using the Hamilton-Jacobi-Bellman equation, we derive both a Keynes-Ramsey rule and a closed form solution for an optimal consumption-investment problem with labor income. The utility function is unbounded and uncertainty stems from a Poisson process. Our results can be derived because of the proofs presented in the accompanying paper by Sennewald (2006). Additional examples are given which highlight the correct use of the Hamilton-Jacobi-Bellman equation and the change-of-variables formula (sometimes referred to as ``Itô's Lemma'') under Poisson uncertainty.     

Asset Specificity and Vertical Integration

Asset specificity is usually considered to be an argument for vertical integration. The main idea is that specificity induces opportunistic behavior, and that vertical integration reduces the cost of preventing opportunism. In this paper I show that asset specificity can be an argument for non‐integration. In a repeated‐game model of self‐enforcing relational contracts, it is shown that when parties are non‐integrated, increasing degrees of asset specificity make it possible to design relational contracts with higher‐powered incentives.     

Art as an investment: Short and long-term comovements in major painting markets

This paper examines the short and long-term price linkages among major art and equity markets over the period 1976–2001. The art markets examined are Contemporary Masters, French Impressionists, Modern European, 19^th Century European, Old Masters, Surrealists, 20^th Century English and Modern US paintings. A global equity index (with dividends and capitalisation changes) is also included. Multivariate cointegration procedures, Granger non-causality tests, level VAR and generalised variance decomposition analyses based on error-correction and vector autoregressive models are conducted to analyse short and long-run relationships among these markets. The results indicate that there is a stationary long-run relationship and significant short and long run causal linkages between the various painting markets and between the equity market and painting markets. However, in terms of the percentage of variance explained most painting markets are relatively isolated, and other painting markets are generally more important than the equity market in explaining the variance that is not caused by innovations in the market itself. This suggests that opportunities for portfolio diversification in art works alone and in conjunction with equity markets exist, though in common with the literature in this area the study finds that the returns on paintings are much lower and the risks much higher than in conventional financial markets.The authors would like to thank delegates to the 14th Australasian Finance and Banking Conference, University of New South Wales, seminar participants at the Queensland University of Technology and Massey University, Masaki Katsuura, and two anonymous referees for helpful comments on earlier versions of this paper. The financial assistance of a Queensland University of Technology, Faculty of Business Research Initiative Grant is also gratefully acknowledged.     

How to invest over the life cycle: Insights from theory

We analyse the state of the art in the field of life cycle portfolio choice, a recent strand of the literature on intertemporal portfolio selection. Life cycle models are designed to identify optimal savings and portfolio policies over the lifetime of investors. They can help to improve pension schemes by showing how these could be specifically tailored to the individual employee’s circumstances to overcome the ‘one-size-fits-all’ philosophy still prevailing in parts of the mandatory retirement savings system. To facilitate comparison, we first describe set-up, solution method and characteristic results for a basic model and then derive a general framework to classify existing contributions. We highlight the models’ strengths and weaknesses and assess their ability to resolve existing portfolio puzzles. Lessons from the literature are summarized and promising areas for further research identified. JEL classifications G11, D14, D91, H55     

刍议环境保护固定资产的核算

文章结合我国企业会计制度的特点和环境保护法律法规的要求,从不同的角度对环境保护固定资产进行分类,并对环境保护固定资产的折旧、减值及报废等核算事项进行了初步的讨论。     

资产证券化对货币政策实效性的影响

资产证券化对货币政策的影响 ,是一个具有理论和实际意义的重要问题。本文从三个方面对此进行了表述。一是资产证券化对货币政策传导路径的影响 ,指出它并未降低利率政策的实效性 ,但对货币供应量这一货币政策的中间目标的实效性会有影响。二是资产证券化对利率期限结构的影响 ,指出资产证券化加强了短期利率影响长期利率的实效性 ;三是分析了资产证券化对银行监管的影响。     

不确定性情况下的居民资产组合行为与中国金融结构变迁

转轨经济的一个显著特点是各项制度不断变化,制度变迁带来的不确定性对居民资产选择行为产生重要影响,进而影响和决定了金融结构的形成与变迁.     

城市公共设施供给中的融资创新——一种基于政府付费或补贴的资产证券化方式

城市政府当期财政难以满足未来城市建设中的公共设施需求,城市发展需要公共融资创新."私人生产、政府付费或补贴、公众消费"模式是城市公共设施融资中一种吸引私人投资的较好模式.在该模式基础上,提出了一种基于政府付费或补贴的资产证券化创新方式,阐述了该方式的运用范围、基本结构和运作流程,并分析了该方式在城市建设中运用的基本条件.     

知识资产会计面临的障碍与路径选择

在知识经济时代,知识资产的价值在经济发展中的作用已经远远超出了实物资产,将知识资产纳入现代会计反映与控制的范畴已经成为会计理论界的共识。但将知识资产会计纳入现代会计信息系统面临着多方面的障碍。寻求一条探索、渐进性的路径,最终将知识资产会计融入财务会计信息系统之中,是会计理论与实务发展的理性选择。     

公共部门资产：政府失灵与价值管理改革

公共部门资产是基于市场失灵由公共部门占有使用的公共资源。公共部门资产的传统管理是以实物管理为主的低效率模式,最后表现为政府失灵,市场经济下必须改革和加强其价值管理方式。成本管理、资产预算、有偿使用和资本化改革是价值管理的主要手段与方法,也是激活公共部门资产的一种有效的途径。非经营性资产的资本化方式很多,将公共资源实行公司化营运,即“南宁模式”是一种较为激进的改革,尚需慎重。