ITSS运维系列标准与ISO/IEC20000标准的关系

在详细介绍ITSS运维系列标准和ISO/IEC 20000系列标准的内容及各部分标准之间关系的基础上,对两类标准从主要内容、核心原理、适用范围、未来发展方向,以及区别和联系等方面进行了详细分析.两类标准均为面向服务的标准,从实施角度看,它们之间不是等同关系,而是互相促进的关系.     

基于14443-A协议的无源电子标签数字集成电路设计

根据ISO/IEC 14443-A协议,完成无源电子标签数字集成电路的设计及其功能测试,实现了对芯片面积、速度和功耗之间较好的平衡。结果表明,在采用中芯国际的0.35μm工艺条件下,所研制芯片面积为36 877.75μm2,功耗为30.845 8 mW,可完全满足协议对标签的性能要求。     

基于ISO/IEC 17025:2005标准的热处理检测实验室管理

结合国际标准ISO/IEC 17025:2005《检测和校准实验室能力的通用要求》和热处理检测实验室的管理特性,对实验室实施准确、公正及科学的检测管理,对实验室检测能力和检测质量的保证,推进热处理组织实施全面质量控制进行了详细的阐述。     

Quantification of fire gases by FTIR: Experimental characterisation of calibration systems

Gaseous fire effluents contain a mixture of components, some of which are present in toxicologically significant proportions, together with water vapour and particulate matter, representing a significant challenge to the analyst. The most useful information is obtained from fire gases at about 180 °C where water and most organic species are volatile. Despite this, it is often necessary to sample and measure fire effluents for prediction of fire toxicity, estimation of the environmental impact of fires, and to understand their behaviour.Gas phase Fourier Transform Infrared (FTIR) spectroscopy has the potential to measure almost all volatiles on a continuous basis during fire. This paper considers the key parameters, which must be carefully measured and controlled in order to obtain reliable calibration data. It evaluates a number of techniques designed for calibrating an FTIR spectrometer for use in fire gas analysis with conclusions on the best system for use for each species and for specific fire tests or experimental scenarios.As few molecules in the gas phase infrared spectrum obey the Beer-Lambert law, a full set of infrared spectra at different concentrations must be obtained for each target analyte, for the actual spectrophotometer—gas cell configuration in use. In some cases, stable standard mixtures are available, and these only have to be quantitatively diluted. In other cases reactive gases such as hydrogen halides must be generated quantitatively in situ, or vapours must be generated from volatile liquids under controlled conditions, in order to obtain calibration spectra. In each case, care must be taken in the design of the sampling line and calibration system, paying particular attention to the temperature, pressure and gas flow.Gas phase FTIR is a powerful analytical tool, but requires a significant investment in time and equipment before quantitative analysis can be undertaken. Unless care is taken to ensure constant temperature and pressure in the sample lines and gas cell, significant errors will result.     

采用先进质量管理体系规范综机设备检修质量

介绍了ISO9000质量管理体系在永煤集团综机设备检修中的主要应用内容,对体系的四个基本文件及控制质量的九个主要过程进行了简单论述,并分析总结了体系实施后的效果与存在的不足。     

实施ISO14001标准促进企业可持续发展

白龙煤矿通过实施ISO14001标准,抓基础,促规范,使环境管理更加系统,全面完善了企业环境管理体系,促进了文明生产,提高了企业环境管理水平。对矿井的生产、安全、经营管理起得了一定的促进作用,为企业可持续发展奠定了良好的基础。     

一种ISO18000-6B防碰撞算法重复搜索问题的解决方法

本文在研究了UHF频段RFID的ISO/IEC18000-6B空中接口标准的基础上,对ISO/IEC18000-6B防碰撞算法中出现的重复搜索问题,提出了一种易于实现的改进算法,并使用OPNET构建ISO/IEC18000-6B标准的仿真平台,由仿真平台的分析结果可知改进算法能够有效减少标签的识别时间,降低碰撞次数.     

贯彻ISO9002标准提高企业设备管理水平

根据企业特点 ,在贯彻ISO90 0 2标准中 ,建立健全设备管理机构及制度体系 ,提高企业设备管理水平 ,建立设备台帐等提出了几点看法     

ISO 9001:2008版介绍

对2008年11月15日正式发布的ISO 9001:2008标准换版原则、修改内容、2008版标准转换的要求等作了介绍,并对标准修改内容进行了初步的分析.     

Standard Reference Specimens in Quality Control of Engineering Surfaces

In the quality control of engineering surfaces, we aim to understand and maintain a good relationship between the manufacturing process and surface function. This is achieved by controlling the surface texture. The control process involves: 1) learning the functional parameters and their control values through controlled experiments or through a long history of production and use; 2) maintaining high accuracy and reproducibility with measurements not only of roughness calibration specimens but also of real engineering parts. In this paper, the characteristics, utilizations, and limitations of different classes of precision roughness calibration specimens are described. A measuring procedure of engineering surfaces, based on the calibration procedure of roughness specimens at NIST, is proposed. This procedure involves utilization of check specimens with waveform, wavelength, and other roughness parameters similar to functioning engineering surfaces. These check specimens would be certified under standardized reference measuring conditions, or by a reference instrument, and could be used for overall checking of the measuring procedure and for maintaining accuracy and agreement in engineering surface measurement. The concept of “surface texture design” is also suggested, which involves designing the engineering surface texture, the manufacturing process, and the quality control procedure to meet the optimal functional needs.