用改进的蒙特卡罗模拟估计我国商业银行操作风险

运用蒙特卡罗模拟方法估计银行业操作风险时,对于事件发生频率,一般不考虑预测模型参数的时变性,致使预测结果存在较大偏差。针对这一不足,建立了灰色动态残差GM(1,1)模型来估计与预测损失事件的发生频率,并通过对起始时点的比较选择和残差的修正,进一步改进了预测模型。再用蒙特卡罗方法对操作风险的损失金额进行模拟,配合使用所建立的损失事件发生频率预测模型,得到商业银行操作风险的损失值,并据以确定监管资本和减少商业银行操作风险的对策。     

基于动态E-VaR模型的房地产收益波动性测度研究

基于房地产股票价格数据,针对现有大多数风险测度方法没有考虑到小概率、大损失的极端事件的现状,运用极值理论EVT和在险值VaR构造动态风险计量模型。Back-testing方法检验结果表明,基于动态E-VaR的市场风险测度方法对于指数收益率风险的度量具有较强的适用性。     

基于VaR理论的工程造价风险研究

随着极值统计理论的发展,其在水文、海洋、气象、地震、金融、以及工程等可靠性领域被越来越广泛地应用。文中根据极端事件风险理论和工程造价风险分析的实际,提出了基于POT模型的一种极值分布——GPD,并利用GPD分布,得到相应的VaR(风险价值)估计值,实现对工程造价风险的度量。     

金融机构极端事件下的风险分析

散射过程能够为那些存在跳跃的时间序列随机事件提供随机模型。2007年以来散射过程有关理论在极端事件下,金融机构在一定时间内遭受大量损失后总损失定价如何确定。本文认为,金融机构在极端事件下,其损失分布通常是重尾分布,再度利用三种重尾分布函数(Loggamma分布,Frechet分布以及截断的Gumbel分布)来度量总损失的期望值。     

基于损失分布法的商业银行操作风险度量

操作风险是商业银行面临的重要风险之一,本文运用公开渠道收集的中国农业银行1994~2009年的操作风险损失数据,构建损失分布法模型,再用蒙特卡洛模拟方法对操作风险进行了实证分析。得出结论:损失分布法是适用于我国商业银行的,各商业银行应当建立并完善损失数据库,以加强对操作风险的管理。     

再保险对一类特殊相依风险模型的破产概率的影响

本文主要讨论一类索赔量与索赔发生时间间隔具有相关性的风险模型在比例再保险与超额损失再保险这两种再保险方式下的破产概率问题。     

危险品配送中心选址及路线选择问题研究

危险品作为一类特殊的物品,其需求量也随着经济的发展而迅速上升。但是由于它对环境和人口的危害特性,在配送中心选择和运输过程中除了考虑一般物品所必须考虑的成本因素外,风险往往是这类物品决策过程中不能忽略的重要因素。因此,文章根据成本、选址风险、暴露人口数量以及危险事件发生概率最小化为目标,建立了无时间约束条件下的危险品配送中心选址及路线选择(LRP)模型,并通过编写Lingo程序对模拟数据进行优化,结果表明该模型是有效的。     

POT模型中GPD“厚尾”性及金融风险测度

极端值模型是准确估计厚尾分布金融资产回报市场风险的有力工具。在越槛高峰(POT)模型中,本文对超阈值近似服从的广义Pareto分布的形状参数与厚尾性关系及其在金融风险测度中的应用进行了分析。结果表明,当0<ε≤1,y>2β/(1-ε)时,分布为厚尾分布且尾部随着形状参数的增加而变厚,此时最适合于金融资产时间序列厚尾分布风险测度和参数的极大似然估计。国内外大量的实证研究验证了上述理论并得出我国沪深股市风险特征的一些新结论。     

商业银行操作风险拟合分布与度量研究

商业银行操作风险的损失程度较大,已引起社会各界的高度关注.文章使用GPD模型刻画了商业银行操作风险的损失分布,根据A2的方法确定了阈值,在此基础上使用VaR模型对商业银行操作风险进行了度量分析.结果表明,GPD-VaR模型能够准确反映商业银行的操作风险,且置信水平和操作风险存在正相关关系,最后提出了防范操作风险的政策建议.     

政府采办中费用风险评估方法概述

政府采办过程中会有风险事件发生，其对采办工作的影响，需从这种风险事件发生时所导致的系统性能下降、采办费用上升和工期的延长，即性能、费用、进度这三方面来综合衡量。费用风险分析是政府采办风险分析工作的主要研究内容之一，本文以仅考虑费用问题造成的直接费用为基础，介绍了几种较为适用的费用风险评估方法，为建立费用风险评估模型提供参考。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

Ansätze und Ergebnisse anglo-amerikanischer M&A-Forschung

Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.     

Introduction of New Technology with a Sound Transition of the Input-Output Structure

We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。