Intraday Empirical Analysis and Modeling of Diversified World Stock Indices

This paper proposes an approach to the intraday analysis of diversified world stock accumulation indices. The growth optimal portfolio (GOP) is used as reference unit or benchmark in a continuous financial market model. Diversified portfolios, covering the world stock market, are constructed and shown to approximate the GOP, providing the basis for a range of financial applications. The normalized GOP is modeled as a time transformed square root process of dimension four. Its dynamics are empirically verified for several world stock indices. Furthermore, the evolution of the transformed time is modeled as the integral over a rapidly evolving mean-reverting market activity process with deterministic volatility. The empirical findings suggest a rather simple and robust model for a world stock index that reflects the historical evolution, by using only a few readily observable parameters. Mathematics Subject Classification: (1991) primary 90A12, secondary 60G30,62P20 JEL Classification: G10, G13     

The Lévy LIBOR model

Models driven by Lévy processes are attractive because of their greater flexibility compared to classical diffusion models. First we derive the dynamics of the LIBOR rate process in a semimartingale as well as a Lévy Heath-Jarrow-Morton setting. Then we introduce a Lévy LIBOR market model. In order to guarantee positive rates, the LIBOR rate process is constructed as an ordinary exponential. Via backward induction we get that the rates are martingales under the corresponding forward measures. An explicit formula to price caps and floors which uses bilateral Laplace transforms is derived.     

Central bank interventions and jumps in double long memory models of daily exchange rates

In this paper, we estimate ARFIMA–FIGARCH models for the major exchange rates (against the US dollar) which have been subject to direct central bank interventions in the last decades. We show that the normality assumption is not adequate due to the occurrence of volatility outliers and its rejection is related to these interventions. Consequently, we rely on a normal mixture distribution that allows for endogenously determined jumps in the process governing the exchange rate dynamics. This distribution performs rather well and is found to be important for the estimation of the persistence of volatility shocks. Introducing a time-varying jump probability associated to central bank interventions, we find that the central bank interventions, conducted in either a coordinated or unilateral way, induce a jump in the process and tend to increase exchange rate volatility.     

Process implications of the use of the Internet in new product development: a conceptual analysis

New product development requires a long and detailed process with numerous activities such as product line planning, strategy development, concept generation and screening, business analysis, development, testing and validation, manufacturing development and commercialization. Furthermore, each of these activities has its own unique requirements, some requiring information collection from the market, whereas others requiring the collaboration of different people who are involved in the new product development activities. This paper investigates the Internet's role in these activities and develops research propositions. In addition, it discusses how the impact of the Internet might change based on different products and different organizational conditions.     

Option pricing in the presence of natural boundaries and a quadratic diffusion term

This paper uses a probabilistic change-of-numeraire technique to compute closed-form prices of European options to exchange one asset against another when the relative price of the underlying assets follows a diffusion process with natural boundaries and a quadratic diffusion coefficient. The paper shows in particular how to interpret the option price formula in terms of exercise probabilities which are calculated under the martingale measures associated with two specific numeraire portfolios. An application to the pricing of bond options and certain interest rate derivatives illustrates the main results.     

用单片机实现渗碳工艺的控制

本文介绍了一个简单、廉价的单片机系统,并用其实现了渗碳过程的各段时间和渗剂滴量的自动控制,取得了良好的效果。     

业务流程再造与组织结构变革——中国工商银行厦门分行扁平化改革的探索与实践

业务流程再造和组织结构变革是构造科学公司治理结构的重要一环。2005年上半年,作为工商银行总行进行城市行机构扁平化改革试点的厦门分行,在整合业务流程、优化组织架构、完善管理机制等方面进行了积极的探索,同年8月对辖属网点全面实施了直通式管理。厦门分行的扁平化改革遵循“以推行集约化经营为目标,整合业务流程,以梳理业务流程为基础,优化组织架构”的总体思路,坚持以客户为中心、以效益为导向、以内控为基础和以人为本、循序渐进的原则,实行分行-支行两级机构管理模式,合理确定网点支行的管理半径,分专业进行业务流程重组,取得了一定的成绩。     

基于信息流程的军事装备管理系统变革设计

基于信息化战争的到来和信息化军事装备逐渐装备部队的新形势,提出了基于信息流程变革军事装备管理系统的构想,分析了存在的问题,给出了军事装备管理系统整体变革设计的整体框架,并对军事装备管理系统中信息流程、业务流程这两大核心流程的重新设计进行了探讨。