基于多级直觉模糊综合的信息安全评估

以ISO 17799为依据建立信息安全评估指标体系,结合多级综合评估以及AHP方法,并利用直觉模糊算子进行运算,建立了一种新的信息安全评估模型.解决了信息安全评估过程中数据采集困难、描述不够全面、评估主观成分多、定性与定量结合不好的问题,具有很好的理论和应用价值.     

基于Intel R1000的超高频RFID读写器设计

设计并提出一种超高频射频识别系统读写器设计的新方案.该读写器采用Intel R1000收发器芯片、W78E365微控器,符合ISO 18000-6C和EPC global Gen 2标准,工作频率为860～960 MHz,读写距离在2～10 m之间.同时给出读写器硬件系统的组成和软件工作流程,并针对同时读取多张卡的情况进行分析,实现了防冲突算法.该读写器支持SSB-ASK和DSB-ASK双重调制方式,可根据需要改变使用天线的单、双模式.     

智能卡COS芯片层模块设计与测试方案研究

设计了智能卡操作系统底层驱动模块和FLASH读写模块,并提出针对这些模块函数的测试方案.首先介绍智能卡操作系统的基本概念和智能卡硬件的基本结构;然后以接触式智能卡为例,从芯片的硬件结构出发,提出COS操作系统通信和硬件模块以及操作系统的异常处理机制的设计方案,并提出一种操作系统底层的测试方案,即Testing COS.这里从COS性能的角度出发设计底层模块,并提出针对底层模块函数的测试方案.     

基于ISO 27001的宝信eCop认证分析

通过研究ISO 27001的目标,措施和当前我国信息安全的现状,指出建设信息安全管理体系的主要任务在于建立安全的内网环境.宝信eCop内网安全产品在访问控制、保障终端运行安全、防范违规行为、事件响应、审计监督等方面给企事业单位面临的风险提供了解决方案.     

解析ISO 10605:2008

介绍ISO10605：2008新版标准中人体ESD模型的分类及表征特性;与2001版相比,新版标准增加了150pF/330Ω和330pF/330Ω两种放电模块。同时,介绍了新版标准中接触法校准静电枪的内容和最新的勘误单。最后讨论了静电枪的接地方式,指出静电枪的接地线与水平耦合平面直接相连的情况并不能达到考核受试设备的效果。     

修订ISO标准方法—重量法测定硫的试验报告

对《ISO 4934-1980(E)钢和铸铁-硫含量的测定-重量法》中(1)不溶于稀硝酸的试样的溶解;(2)铬干扰的消除;(3)坩埚的恒重;(4)BaSO_4真换算成硫(S)的换算系数提出了修改意见。     

电子企业通过IS09000认证后质量成本管理方法

目前我国许多电子企业在近几年来纷纷完成了ISO9000质量管理体系认证工作,在完善了质量管理的基础上,进一步开展质量成本管理,在提升竞争力的过程中充分发挥质量体系应有的作用.本文介绍了质量成本的概念、组成和意义,并对获证企业如何开展好质量成本管理方法提出了几点建议.     

Implementation of ISO Guide 34: Accreditation for reference material production

The National Analytical Reference Laboratory of the Australian Government Analytical Laboratories was initially accredited to ILAC Guide G 12:2000 in January 2000 and is currently accredited to ISO Guide 34 (2000) for the production of a range of pure organic substance reference materials. This paper discusses the practical challenges and rewards of developing and implementing a quality system for reference material production and discusses some of the barriers, and potential solutions, to more general implementation of third-party accreditation.     

Detection capability of tetracyclines analysed by a fluorescence technique: comparison between bilinear and trilinear partial least squares models

According to the committee decision of 12 August 2002 (2002/657/EC) the capability of detection, CCβ, must be set in all analytical methods not only at concentration levels close to zero but also at the maximum permitted limit (PL). In this work we describe a methodology which evaluates the capability of detection of a fluorescence technique with soft calibration models (bilinear and trilinear PLS) to determine tetracyclines (group B1 substances from annex 1 of Directive 96/23/EC). Its estimation is based on the generalisation of the procedure described in International Union of Pure and Applied Chemistry and in the ISO standard 11843 for univariate signals which evaluates the probabilities of false positive (α) and false negative (β). The capability of detection, CCβ, estimated from the second-order signal and the trilinear PLS model is 9.93 μg l⁻¹ of tetracycline, 17.75 μg l⁻¹ of oxytetracycline and 26.31 μg l⁻¹ of chlortetracycline, setting α and β at 0.05. The capability of detection, CCβ, determined around the PL (100 μg kg⁻¹ in milk and muscle) with the second-order signal is 109.4 μg l⁻¹ of tetracycline, 117.0 μg l⁻¹ of oxytetracycline and 124.9 μg l⁻¹ of chlortetracycline, setting α and β at 0.05. The results were compared with those obtained with zero and first-order signals. The effect of the interferences on the capability of detection was also analysed as well as the number of standards used to build the models and their calibration range.When a tetracycline is quantified in presence of uncalibrated ones by means of the trilinear PLS model the errors oscillate between 14.70% for TC and 9.57% for OTC.     

Estimation of measurement uncertainty in food microbiology: The ISO approach

Given the current interest in measurement uncertainty (MU) in food microbiology, in particular for laboratory accreditation purposes, and the need to have harmonized reference documents specifically in that area at the international level, ISO is conducting works to meet this need. An ISO Technical Specification (ISO/TS 19036) is being prepared on MU estimation for quantitative determinations. A global approach has been chosen, based on the reproducibility standard deviation of the final result of the measurement process. Three possibilities are envisaged for the estimation of the reproducibility standard deviation, in a decreasing order of preference: The intra-laboratory standard deviation, the inter-laboratory standard deviation derived from method validation, and the inter-laboratory standard deviation derived from proficiency testing.The uncertainty of qualitative determinations is still under investigation, and will be covered by a separate ISO publication. Presented at AOAC Europe/Eurachem Symposium March 2005, Brussels, Belgium