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Research of Active Access Control to Near Space Information Resources Based on Subject’s Preference Knowledge

Author: LiuDeSheng
Tutor: FengXiaoSheng
School: National University of Defense Science and Technology
Course: Management Science and Engineering
Keywords: Near space information resources Access Control Active Control Preference knowledge Noumenon
CLC: TP393.08
Type: Master's thesis
Year: 2007
Downloads: 89
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Abstract


With the near space in this area is gradually drawn worldwide concern and become the recent research focus , accompanied by the rapid development of China 's space technology and information technology , aerospace equipment system of continuous improvement will allow increasingly rich information resources of the near space , the importance of the control of access to the information resources of the near space gradually exposed. However, the current study of near space information resources at an early stage , a safe and efficient access control policy for the use of information resources to provide security need to be made ??based on the characteristics of information resources . This paper first analyzes the concept of near space information resources and the organizational form of the future applications , a clear demand for the implementation of the access control of information resources . Through traditional discretionary access control (DAC), the analysis based on the task access control (TBAC) correlation model defects subject preference knowledge - based active access control strategy ( SPAC ) . Relative to traditional access control models consider only the authorized user access this article by introducing access control concept of continuity , user history preference knowledge granularity in real-time active control of access operation . Policy model in the design process , combined with the information resources of the near space multi -level hierarchical organizational characteristics on the model defines modules as well as control flow . Set theory formal description of the basic elements of the model , relational mapping , and constraint rules . In the technical solution in the design process , the analysis of a single isolated environment access control framework design , and extended to the overall framework for access control in the multi - level joint application environment , the levels preference reasoning service component frame member and running processes were studied . Discussion and the use of technology , including LDAP, body , Jena , the detailed design of the organizational structure of multi-level user security information , preferences, knowledge base and preference knowledge reasoning . Use case diagram , activity diagram , and the timing diagram , the definition of the prototype system to be achieved , running processes portrayal model application example to achieve using UML unified modeling tools based on the J2EE platform to complete a prototype system and initial use .

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