Does stock repurchase declaration affect stock price? Differences between the electrics industry and other industries

This study is to discuss the impact of stock repurchase declaration and purpose of repurchase on the stock price in the backdrop of listed companies on Taiwan’s stock market. Event Study Method is employed to discuss stock price fluctuations while GARCH (Generalized Autoregressive Conditional Heteroscedasticity) is applied to estimate the Market Model regressive coefficients. The samples consisted of companies declaring first stock repurchase are selected from August 9, 2000 to December 31, 2005 with a precondition that all the companies shall be listed ones 150 days prior to declaration. The study results reveal that companies from other industries have considerably bigger average CAR than companies of the electrics industry before and after the declaration of stock repurchase. Companies with application purpose of “maintain stockholders’ equities and corporate credit” have considerably bigger average CAR than companies with application purpose of “transferring stocks to employees”. In industries other than electrics, companies with application purpose of “maintain stockholders’ equities and corporate credit” have bigger accumulated abnormal return response than companies with application purpose of “transferring stocks to employees”. In case of “maintain stockholders’ equities and corporate credit” as the application purpose of stock repurchase, companies from industries other than electrics have relatively higher average CAR response. The empirical study results can serve as a reference for the listed company management and to related academic studies.     

深入浅出ASP．NET页面对象模型

本文主要从IIS与ASP．NET的通信处理模型，IHttpHandler与IHttpModule之间的区别，页面类，事件，页面生命周期等方面深入浅出地论述了ASP．NET页面对象模型。其是开发更深层次的Web组件的基础。     

A Graph Abstract Machine Describing Event Structure Composition

Event structures, Game Semantics strategies and Linear Logic proof-nets arise in different domains (concurrency, semantics, proof-theory) but can all be described by means of directed acyclic graphs (dag's). They are all equipped with a specific notion of composition, interaction or normalization.We report on-going work, aiming to investigate the common dynamics which seems to underly these different structures.In this paper we focus on confusion free event structures on one side, and linear strategies [Jean-Yves Girard. Locus solum. Mathematical Structures in Computer Science, 11:301–506, 2001, C. Faggian and F. Maurel. Ludics nets, a game model of concurrent interaction. In Proc. of LICS'05 (Logic in Computer Science). IEEE Computer Society Press, 2005] on the other side. We introduce an abstract machine which is based on (and generalizes) strategies interaction; it processes labelled dag's, and provides a common presentation of the composition at work in these different settings.     

基于B语言的构件精化开发方法

本文采用B语言抽象机操作和扩充的事件机制，通过对构件行为规约形式化定义，然后用精化规则对构件行为规约逐步精化，直到可执行程序，最后给出了一个简单例子。     

Event oriented analysis of series structural systems

The event oriented analysis of technical objects is in general accomplished by representing them as complete or incomplete systems and subsystems of events. It is argued in the article how the compound engineering systems of events can be partitioned by inclusion-exclusion expansion into individual and common cause modes. The event analysis is based on the random variable model and employs the results of operational modes and effect analysis, of the reliability analysis and of the uncertainty analysis. The system redundancy and robustness are considered as uncertainties, due to the fact that really a number of events are possible, expressed by the entropy concept in probability theory, conditioned by operational and failure modes, respectively. Relative and average uncertainty measures are introduced to facilitate uncertainty interpretations in engineering problems. It is investigated how the sensitivity analysis of reliability measures can be applied to the assessments of system uncertainties. Numerical examples presented in the article illustrate the application of event oriented system analysis to series structural systems with common cause failures. Additionally, system performance presentation and optimization with constraints, as well as potential improvements in system analysis, design and maintenance are investigated.     

自动制造系统中的事件、资源和Petri网

讨论了自动制造系统中事件的形式化表示方法，以及制造系统中的工序和资源的Ｐｅｔｒｉ网表示．在此基础上还讨论了一类自动制造系统Ｐｅｔｒｉ网关联矩阵的构造形式和初始标识的确定方法．最后提出了自动制造系统Ｐｅｔｒｉ网控制器的形式化设计方法．     

自动化仓库输送过程调度问题研究

自动化仓库中输送系统的工作过程具有典型的离散事件特征。本语文基于面向对象着色Ｐｅｔｒｉ网模型，讨论了该过程的死锁分析问题，并给出了死锁避免的最大允许反馈控制策略。     

支持容侵的安全群组通信系统体系结构的研究

本文对入侵容忍的模型和TTCB结构进行了分析，在MAFTIA节点基础上，增加了一个事件处理引擎的核心模块，使得节点在参与者层与站点层支持自由选择安全群组通信系统中的密钥协商协议和新的加密算法。以改进的MAFTIA节点为基本单元。构建了基于可信实时计算基的新型安全群组系统。该系统能够集成新的安全群组通信密钥协商协议，通过事件处理引擎模块完成群组通信安全的任务，在安全性能方面更为灵活，具有较好的可扩展性与容忍入侵能力。     

从大亚湾核电站“T5”事件看ASSET运行事件评价指南

简要介绍了国际原子能机构安全重大事件评价队（ＡＳＳＥＴ）的评价方法，以及大亚湾核电站“Ｔ５”事件（控制棒落棒时同异常 ）的原因和纠正措施，并应用该方法对其进行了评价，指出了该评价方法在实际应用中所表现出来的一些优点及其局限性。     

Construct Validation of the Dutch Version of the Impact of Event Scale.

The Impact of Event Scale (ES; M. J. Horowitz, N. Wilner, & W. Alvarez, 1979) is a worldwide-used self-report measure to assess the frequency of intrusive and avoidant phenomena after a variety of traumatic experiences. The purpose of this article is to assess the psychometric value of the Dutch version of the IES (D. Brom & R. J. Kleber, 1985) in several samples of individuals who had experienced various traumatic stressors. The reliability and structure of the IES were evaluated in 3 different samples (total N = 1.588). The reliability of the Dutch version of the IES was adequate across the various stressors. The construct validity was assessed by using confirmatory factor analyses. Outcomes revealed a robust structure over the various samples, generally supporting the composition of the original IES. (PsycINFO Database Record (c) 2010 APA, all rights reserved)