Performance evaluation of production systems monitored by statistical process control and off-line inspections

Quality and productivity performance measures are very often considered in separate phases of the production system design process. However, the production system architecture affects the efficiency of the quality control system as well as the quality control configuration has an impact on the performance of the production system.The paper proposes a new analytical method for evaluating the performance of production systems in which statistical process control (SPC) techniques are implemented. Machines behaviour is monitored by measuring quality characteristics of the produced parts through off-line inspection devices and sampling inspections. The numerical results show the good accuracy of the proposed method, provide new insight in the relations among the two areas and pave the way to the joint design of production logistics and quality control systems.     

筏基施工的质量检测方法及存在的问题分析

阐述了河南油田某3幢小高层筏基施工的质量检测方法及其标准与依据。指出了该建筑的筏基使用水泥、同条件养护砼试块等的主要检测内容及检测结果。在影响砼强度的诸多因素中,水灰比过大或过小是对混凝土强度降低的主要影响因素。并针对存在的问题探讨了有关的应对措施．     

油气输送钢管制造企业质量成本管理理论与应用

目前,随着石油天然气需求量的增加,对油气输送铜管质量的要求也越来越高,为此,企业必须为社会提供与之相适应的质量高、价格廉、适销对路的产品和服务,以获得企业自身更多的赢利。因此,作为会计核算的重要组成部分,成本就成为企业关注的焦点,而质量成本作为企业成本的一部分,对现代企业的经营发展起着极其重要的作用,为此,研究与探讨油气输送钢管制造企业质量成本控制的措施和效果等就有非常重要的意义。     

The Methodology of Risk Perception Research

Risk perception is not strictly a matter ofsensory perception, but of attitudesand expectations. As such, it can be studied byreasonably well developed methods of attitudemeasurement and psychological scaling. Suchmeasurement needs to be applied in a pragmaticfashion, however, since the discussions of fundamentalmeasurement and requirements of scale levelsappropriate for various types of statistical analysis hasfailed in establishing a useful basis for empiricalresearch. The paper also discuses samplingprocedures and the response rateproblem. In risk perception work, there is usually abias involving too many respondents withan above average level ofeducation, but that variable tends to be weaklyrelated to risk perception variables. Finally,post-modern claims and their rejection ofquantitative methods are critically discussed.     

加强会计学专业定岗实训教学新思路

会计专业作为应用性很强的一门学科、一项重要的经济管理工作,是加强经济管理,提高经济效益的重要手段,经济管理离不开会计,经济越发展会计工作就显得越重要。随着经济的高速发展和我国高等教育改革的深化,会计学专业人才的实践能力培养越来越受到学校及社会的广泛重视。本文就会计学专业实践能力培养途径及方法进行分析和探究。     

中学物理课堂教学方法存在的弊端

本文首先对中学物理课堂教学方法的概况进行相关论述,然后,分析中学物理课堂教学方法存在的弊端。     

新时期高职院校数学教学改革探讨

中国的高等职业教育已经进入一个崭新的阶段,无论是招生数量,还是师资力量都呈现出一个全新的面貌。但相对于本科教育还是存在很多不足之处。本文就高职院校的数学教学提出一些个人的看法,以期与各位朋友共同探讨。     

Repeated moral hazard and recursive Lagrangeans

This paper shows how to solve dynamic agency models by extending recursive Lagrangean techniques à la Marcet and Marimon (2011) to problems with hidden actions. The method has many advantages with respect to the promised utilities approach (Abreu et al., 1990): it is a significant improvement in terms of simplicity, tractability and computational speed. Solutions can be easily computed for hidden actions models with several endogenous state variables and several agents, while the promised utilities approach becomes extremely difficult and computationally intensive even with just one state variable or two agents.     

浅谈《数控机床故障诊断与维修》课程改革

本文分析了《数控机床故障诊断与维修》课程改革的必要性,阐述了课程的设计思路、课程改革的内容和教学组织方式,设计了可行的教学方法和教学手段。课程实施取得比较好的成果,同时也提出改革中存在的问题。     

论工程造价结算审核的方法与技巧

工程竣工结算审核是工程造价控制的核心部分,也是一个最为关键的环节,在具体的造价结算审核过程中,需要不断总结经验,取长补短,根据工程的实际情况选择最适宜的审核方式。本文主要分析工程造价结算审核的方法与技巧。