藏文信息处理的Windows支持环境

论述在MS Windows中,字库、文字处理器以及软件开发工具等环境对基于国际标准的藏文文字信息处理的支持。随着藏文OpenType字库的研制成功以及Unicode文字处理器对藏文文字的支持,解决了MS Windows中藏文的输入、输出、存储以及显示问题,而随着MS Visual C＋＋8.0的推出,解决了藏文文字的程序处理问题,从而使基于国际标准的藏文文字信息处理在MS Windows中变得可行。     

Ontological approach for products-centric information system interoperability in networked manufacturing enterprises

Standardisation initiatives (ISO and IEC) try to answer the problem of managing heterogeneous information, scattered within organizations, by formalising the knowledge related to products technical data. While the product is the centred object from which, along its lifecycle, all enterprise systems, either inside a single enterprise or between cooperating networked enterprises, have a specific view, we may consider it as active as far as it participates to the decisions making by providing knowledge about itself. This paper proposes a novel approach, postulating that the product, represented by its technical data, may be considered as interoperable per se with the many applications involved in manufacturing enterprises as far as it embeds knowledge about itself, as it stores all its technical data, provided that these are embedded on a common model. The matter of this approach is to formalise of all technical data and concepts contributing to the definition of a Product Ontology, embedded into the product itself and making it interoperable with applications, minimising loss of semantics.     

Efficient identity-based GQ multisignatures

ISO/IEC 14888 specifies a variety of digital signature mechanisms to sign messages of arbitrary length. These schemes can be applied to provide entity authentication, data origin authentication, non-repudiation, and data integrity verification. ISO/IEC 14888 consists of three parts under the general title Information technology—Security techniques—Digital signatures. Part II, or ISO/IEC 14888-2 specifies the general structure and the fundamental procedures for the generation and verification of an identity-based signature (IBS) mechanism for messages of arbitrary length. Particularly, the IBS scheme of Guillou and Quisquater (GQ) is described in Clauses 6–8. In this paper, an efficient identity-based multisignature (IBMS) scheme is proposed for the GQ IBS scheme, which allows multiple users using the ISO/IEC 14888-2 standard GQ scheme to generate multisignatures. The scheme is efficient in the sense that both the length and the verification time of the multisignatures are fixed. The proposed ID-based multisignature scheme is also secure against forgeability under adaptive chosen-message attack and adaptive chosen-identity attack in random oracle model.     

ISO标准版权保护最新政策解析

国际标准化组织(ISO)理事会于2017年3月15日批准了ISO最新商业政策──《ISO关于出版物分发、销售和复制及ISO版权保护政策》(ISO POCOSA 2017),9月在ISO全体大会上进行了解读,并拟于2018年1月1日正式实施,届时现行的ISO POCOSA 2012将被替代.相比较ISO POCOSA 2012,ISO POCOSA 2017在内容上发生了较大的变化,本文将对新的标准版权政策的内容进行解析,并分析其对我国的影响及我国应采取的应对措施.     

Management Systems: the End of the Beginning?

For many years quality managers have been striving to merge the requirements of management systems into business as usual. Traditional paper-based formats have made this very difficult to achieve. However, the advance of technology and the transfer of information to the electronic medium have provided new opportunities. In the new medium the EFQM Business Excellence Model may be used as a navigational tool to finally solve this problem.     

Whole-body vibration exposure experienced by motorcycle riders – An evaluation according to ISO 2631-1 and ISO 2631-5 standards

Riders of twelve motorcycles, comprising 6 full-scale motorbikes and 6 motor-scooters, and 5 sedan vehicles, performed test runs on a 20.6 km paved road composed of 5 km, 5 km, and 10.6 km of rural, provincial and urban routes, respectively. Each test run of motorcycle was separately performed under speed limits of 55 km/h and 40 km/h. Tri-axial accelerations of whole-body vibration (WBV) were obtained by using a seat pad and a portable data logger, and the driver's view was videotaped with a portable media recorder. Root mean square (RMS) acceleration, 8-h estimated vibration dose value (VDV₍₈₎) and 8-h estimated daily dose of static compression dose (S_ed) were determined from the collected data in accordance with ISO 2631-1 and ISO 2631-5 standards. Experimental results indicate that the WBV values of the sedan vehicle drivers have low RMS, VDV₍₈₎ and S_ed values (RMS 0.27–0.32 m/s²; VDV₍₈₎ 6.3–8.3 m/s^1.75; S_ed 0.21–0.26 MPa). However, over 90% of the motorcycle riders had VDV₍₈₎ (mean 23.5 m/s^1.75) exceeding the upper boundary of health guidance caution zone (17 m/s^1.75) recommended by ISO 2631-1, or had S_ed (mean 1.17 MPa) exceeding the value associated with a high probability of adverse health effects (0.8 MPa) recommended by ISO 2631-5. Over 50% of the motorcycle riders reached these boundary values for VDV and S_e in less than 2 h. The WBV exposure levels of the full-scale motorbikes riders and motor-scooter riders were not significantly different. However, the RMS and VDV₍₈₎ values of motorcycle riders indicate significant roadway effect (p < 0.001), while their S_ed values indicate significant speed limit effect (p < 0.05). This study concludes that the WBV exposure levels of common motorcycle riders are distinctively higher than those of sedans, even on a regular paved road. The impact on health of WBV exposure in motorcycle riders should be carefully addressed with reference to ISO 2631-1 and ISO 2631-5.

Relevance to industry

This study compares the predicted health risks of motorcycle riders according to ISO 2631-1 and ISO 2631-5 standards. Experimental data suggest that the vibration dose value of ISO 2631-1 and daily dose of equivalent static compression stress of ISO 2631-5 have roughly equivalent boundaries for probable health effects.     

Standard process monitoring and traceability programming in collaborative CAD/CAM/CNC manufacturing scenarios

The paper focuses on collaborative STEP-based CAD/CAM/CNC supply chains to program and automate machining process data monitoring and traceability activities. A traceability interface (traceability nc_functions) is defined for the new CNC programming standard ISO STEP-NC. CAM systems will be able to program monitoring and data access activities by inserting traceability nc_function calls in CNC programs. On the shop floor, controllers will automatically interpret these nc_functions to access process data while machining and will relate data records with the corresponding machining operations in a STEP-NC part program. With both types of information—process data and standard machining program (STEP-NC part program)—spread and technologically heterogeneous engineering systems will have full knowledge about what has happened in production. Traceability data access automation will assure data reliability. The paper describes a traceability scenario where standards such as MTConnect and ISA-95 support, rather than interfere with, the STEP-NC traceability proposal.     

UML在分布式系统中的应用与研究

ＵＭＬ（Ｕｎｉｆｉｅｄ　 Ｍｏｄｅｌｉｎｇ 　Ｌａｎｇｕａｇｅ）是一种标准的、功能强大的建模语言。ＩＳＯ ＲＭ－ＯＤＰ（ＩＳＯ开放分布式处理参考模型）为开放、灵活的分布式系统提供了主框架。文章提出了一种用ＵＭＬ为ＯＤＰ系统建模的方法,它以ＯＤＰ的概念和ＵＭＬ的符号为基础。     

军用软件开发过程的质量管理体系研究

军用软件系统的开发在我军信息化建设中占据至关重要的地位。大型武器装备系统的军用软件开发,成本高、风险大、周期长,参与单位及人员众多,如何能够确保大型军用软件的质量,增强武器装备性能,成为亟待解决的课题。本文将质量管理体系引入军用软件开发过程之中,通过强化过程控制,来确保大型军用软件的开发质量,对军队信息化建设,特别是软件系统的开发起到指导和借鉴作用。     

多任务密码服务系统设计与实现

在当前的安全体系架构中,大多数密码服务均由密码服务中间件保障,其共同特点是功能性强但安全性不高。针对上述问题指出了一种解决思路,将密码运行与密钥管理下移至安全的硬件设备内。ISO／IEC7816标准是当前智能卡的国际标准,其中7816-8描述与安全相关的行业间命令。文章在结构上改进一个以ISO／IEC7816-8为设计蓝本的密码服务系统,加入一个中间层,称之为运行环境,设计了运行环境的结构;设计完善了管理安全环境命令;制定了密码服务多任务运行调度策略,实现了任务间的动态切换,得到了一个多任务密码服务系统。