Bayesian life test planning for the Weibull distribution with given shape parameter

This paper describes Bayesian methods for life test planning with Type II censored data from a Weibull distribution, when the Weibull shape parameter is given. We use conjugate prior distributions and criteria based on estimating a quantile of interest of the lifetime distribution. One criterion is based on a precision factor for a credibility interval for a distribution quantile and the other is based on the length of the credibility interval. We provide simple closed form expressions for the relationship between the needed number of failures and the precision criteria. Examples are used to illustrate the results.Received: October 2002 / Revised: March 2004     

完全BTO模式下的汽车物流与环境

描述了国内库存在汽车生产厂的上下游积压的现象,汽车生产与客户需求的完全脱节是重要原因,指出BTO是解决这个问题的可行方法,介绍了缩短OTD时间为3天的3daycar系统中可为国内汽车业借鉴的特征,从汽车物流的入厂物流与出厂物流两个方面论述了物流模式改变对环境产生的影响,并提出了为打造可持续发展的汽车物流对策。     

运用功能成本分析法降低建筑工程材料成本

建筑工程材料成本的高低直接影响着建筑企业的经济效益。文章根据功能成本分析原理,采用价值工程的基本公式V=F/C,从建筑工程设计阶段、采购阶段和施工阶段分析了建筑材料功能、成本和价值的关系,进一步探讨了降低材料成本的方法。     

家族企业财务管理问题的理性思考

改革开放以来,我国家族企业在发展过程中面临一系列的机遇,但同时也暴露出一些问题,特别是财务管理的不科学、混乱严重阻碍了家族企业的进一步发展。财务管理是现代家族企业管理的基础和核心,家族企业应当认真分析在财务管理方面的一些问题,强化财务管理的重要性,建立健全财务管理制度与监督控制制度。     

企业文化创新铸造核心竞争力的利剑

综观一些企业的发展历程,有的长盛不衰,有的苦苦挣扎,有的则昙花一现.而麦当劳、通用电气、IBM、海尔等所特有的优秀企业化是其获得成功的根本,他们将企业化视作企业核心竞争力的重要组成部分,视作企业的灵魂.因此通过创新,培育优秀企业化是企业打造核心竞争力,获得持续竞争优势的关键因素之一.     

公司道德与会计职业责任

道德依存的基础是人在经济活动过程中形成的经济利益关系。约束这种关系的规范依个体存在方式的不同而有不同的道德规范。一是作为独立个体人应当遵循的社会公德,二是作为某个组织成员,代表组织应遵循的道德规范。它们分别应当是家庭美德、公司道德和职业道德。目前社会主义市场经济建设中的道德建设应当重视和加强公司道德建设。会计职业道德建设的缺陷是过分强调职业道德在整个道德体系中的作用而忽视了公司道德建设。     

A semiparametric GARCH model for foreign exchange volatility

A semiparametric extension of the GJR model (Glosten et al., 1993. Journal of Finance 48, 1779–1801) is proposed for the volatility of foreign exchange returns. Under reasonable assumptions, asymptotic normal distributions are established for the estimators of the model, corroborated by simulation results. When applied to the Deutsche Mark/US Dollar and the Deutsche Mark/British Pound daily returns data, the semiparametric volatility model outperforms the GJR model as well as the more commonly used GARCH(1,1) model in terms of goodness-of-fit, and forecasting, by correcting overgrowth in volatility.     

Director expertise and co-option in industry superannuation funds?

This study examines whether independent directors who possess financial expertise and are independent from the CEO (i.e., non-co-opted) are associated with improved outcomes for industry superannuation funds. Our results highlight that independence alone is insufficient to improve fund outcomes. Instead, we find that only non-co-opted independent directors benefit fund members in terms of higher performance and lower fees. Moreover, we find that independent directors' financial expertise is not associated with fund performance and fees. Our study has implications for regulators and superannuation funds who are currently debating the need for one-third independent directors on the board of Australian superannuation funds.     

山西天镇晚白垩世恐龙动物群发掘简报

文章简要介绍了山西天镇晚白垩世恐龙化石的发现、发掘概况及动物群的特征，讨论了含化石地层—灰泉堡组的时代，认为无疑应属晚白垩世。以晚白垩世蜥脚类巨龙科和鸟臀类甲龙科化石为代表，别具特色的新恐龙动物群为一突破性的发现，对它的深入研究，将对蜥脚类、甲龙类及其共生动物群的组成、性质、演化、迁徙和动物地理区的划分及探讨白垩纪末恐龙的绝灭有重要的科学意义。     

浅谈城市污水回用的主要途径

本文对城市污水经处理后回用的主要途径进行了综述，其中重点介绍了回用到工业上的用途及其可行性。