无人值班少人值守站照明设计特点

根据无人值班少人值守站的具体特点,首次提出了无人站照明设计分类,即巡视照明、检修照明、备用照明及警卫照明,并提出了无人站各巡视点及通道照度标准值,无人站照明控制方法,对今后无人站照明设计提供了借鉴,对照明节能具有重要意义。     

基于VAR模型的山东省经济增长波动分析

本文通过建立向量自回归模型,运用脉冲响应函数和预测方差分解的方法对山东省经济增长的波动情况进行了实证分析。研究结果表明:各变量对山东经济增长的影响均不太明显。这说明山东经济一直保持稳定快速发展的势头。     

The Unintended Consequences of the Frequency of PCAOB Inspection

After more than 50 years of self‐regulation of the US auditing profession, the Sarbanes‐Oxley Act of 2002 (SOX) created the Public Company Accounting Oversight Board (PCAOB) as a quasi‐governmental entity with statutory authority to inspect accounting firms that audit public clients. The frequency of this inspection is annual or triennial, based upon the number of public clients the firm audits. We examine the effects of these two levels of inspection frequency on financial reporting quality and audit fees for clients of small and midsize public accounting firms. Our findings provide evidence of significantly higher audit quality and audit fees for clients of annually inspected firms relative to clients of triennially inspected firms. These findings are robust to auditor‐client alignment analyses, propensity score matching, time‐series analyses, examination of firms that have changed from triennial to annual inspection, and particular examination of firms with inspection deficiencies. Overall, our study suggests that the two‐tier frequency system of PCAOB inspection may have also resulted in two‐tier audit quality and audit fee systems for small and midsize public accounting firms, with more frequent inspection leading to more rigorous and informed auditor decisions. We discuss the implications of our results for the Board and the profession at large.     

An investigation of restaurant food safety performance: A comparison between ethnic and nonethnic and chain and independent restaurants in Louisiana

This study examines health inspection data from casual dining restaurants and compares differences of food code violations between ethnic and nonethnic restaurants. A total of 7,415 violations were retrieved from the restaurant inspection reports of 769 restaurants. Ethnic restaurants have more violations than nonethnic restaurant in categories related to food time/temperature violations, cross contamination, and food condition/surface/labels. Nonethnic and chain restaurants had fewer behavioral violations than ethnic and independently operated restaurants. Ethnic restaurants were 1.74 times more likely than nonethnic restaurants to have critical violations. Meanwhile, independent restaurants were 1.64 times more likely than chain restaurants to have critical violations.     

6S优化检维修管理模式的实施

为提高设备检维修现场管理水平,中国石化南通石油分公司大岸桥石油机械厂钳工车间将6S现场管理理念导入钳工车间日常检维修管理中,通过对检维修现状和方式的分析,创新管理理念,制定有效的计划及措施并落到实处,使钳工现场检维修管理模式得到优化,提升了车间的管理水平。     

粮食质检体系建设的现状与思考

粮食卫生质量安全是全社会共同关注的热点问题,如何开展粮食质量安全管理,保障消费安全,提升消费水平是学者们共同探讨的问题。建立和完善粮食质量安全监督检测体系,开展粮食质量安全监督检测是提高保障农产品质量安全水平的有效手段之一。本文主要阐述了目前粮食质量监督检测体系的现状和存在的主要问题,并就如何加快粮食质检体系建设方面阐述了自己的观点。     

浅谈航线工作中的线路检查

不管航空技术发展再快,技术再先进,系统的线路故障是都是不能避免的。几乎每一个系统都有电气线路的连接,而线路的故障在飞机所有故障当中占了相当大的比例,除了直接导致系统失效,还可能出现跳火,燃烧等现象,对安全的影响很大。本篇文章主要讲解线路分布在飞机不同的区域,不同的位置,受到环境温度,湿度,其他系统部件机械运动的影响等,其故障具有隐蔽、复杂、多样的特点,又由于排故时需要认真去测量检查,用的时间也相对较长,成功率依然偏低,还往往容易出现误换件,造成维修成本增加。     

数控车床测头系统的开发

随着现代制造技术的不断发展,我国数控车床测头系统的开发也得到发展。本文分析了测头系统的作用、组成及工作原理,以在数控车床上自动在线测量孔直径为例,介绍了测头系统测量程序的编制方法,使数控机床的操作变得更加简单、便捷、精确、高效,同时为其他相关程序的编制提供参考。     

产品质量监督检验工作在名牌战略中的地位和作用

加入世界贸易组织后,我国经济开始在全新的平台上与世界各国竞争。名牌产品代表着一个国家的经济水平,乃至代表着整个国家的先进生产力。而质量监督检验工作是国家实施名牌战略的关键环节,其地位和作用极其重要。     

输液生产后设备清洗残留物质监测方法的探讨

文章探讨大容量注射剂生产设备清洗后残留物质检查的方法,使用输液生产常用的原辅料及清洗剂,配制一定浓度,根据其化学性质分别采用测定pH值、电导率、旋光度、鉴别反应等方法,确定检测方法数据,从而控制残留物限度。