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Research progress and future prospects in the service security of key blast furnace equipment

International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2121-2135页

作者： Yanxiang Liu Kexin Jiao Jianliang Zhang Cui Wang Lei Zhang Xiaoyue Fan School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Research Institute of Macro-Safety Science University of Science and Technology BeijingBeijing 100083China

The safety and longevity of key blast furnace(BF)equipment determine the stable and low-carbon production of *** pa-per presents an analysis of the heat transfer characteristics of these components and the uneven distribution of cooling water in parallel pipes based on hydrodynamic principles,discusses the feasible methods for the improvement of BF cooling intensity,and reviews the pre-paration process,performance,and damage characteristics of three key equipment pieces:coolers,tuyeres,and hearth ***-thermoere,to attain better control of these critical components under high-temperature working conditions,we propose the application of optimized technologies,such as BF operation and maintenance technology,self-repair technology,and full-lifecycle management ***,we propose further researches on safety assessments and predictions for key BF equipment under new operating conditions.

关键词： blast furnace equipment service security blast furnace campaign self-repair

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云计算的服务安全体系结构和询问控制模型(英文)

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China Communications 2011年第6期8卷 44-50页

作者：闫丹凤杨放春 Tet Yeap State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications School of Inflrmation Technology Engineering University of Ottawa

security is a key problem for the development of Cloud Computing. A common service security architecture is a basic abstract to support security research work. The authorization ability in the service security faces more complex and variable users and environment. Based on the multidimensional views, the service security architecture is described on three dimensions of service security requirement integrating security attributes and service layers. An attribute-based dynamic access control model is presented to detail the relationships among subjects, objects, roles, attributes, context and extra factors further. The model uses dynamic control policies to support the multiple roles and flexible authority. At last, access control and policies execution mechanism were studied as the implementation suggestion.

关键词： cloud computing service security security architecture access control authorization

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