multilevel security 中文意思是什麼
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First, it establishes a theoretical framework for commercial bank competence on the basis of extensive literature review and the integration of related theories in general and financial economics. secondly, a multilevel index system is established in this dissertation consisting of three major key elements of knowledge innovation, organization ability and basic circumstance, which solves the problem in existing competitiveness evaluation study which only concerns the current, security and profitability in banks ’ finance neglecting the comprehensiveness or dividing the hierarch of evaluation index system. thirdly, this dissertation empirical analysises the competitiveness of the china ’ s commercial bank, and bases on the actuality analysis of competitiveness of the china ’ s commercial bank and empirical research conclusion, puts forward self viewpoint to how
然後，融入經濟學、金融學的相關理論，構建了商業銀行競爭力的理論框架;二是將構建了一個包括知識創新、組織能力和基礎環境三大商業銀行競爭力構成要素的分層次評價指標體系，解決了現有研究存在的或只評價財務表現，或只關注銀行「三性」 ，使得評價缺乏全面性的問題，並彌補了某些研究指標體系缺乏層次性的不足;三是實證研究中國商業銀行競爭力，並在對中國商業銀行現狀分析和實證結論的基礎上，對如何提升中國商業銀行競爭力提出了自己的觀點。 -
To extend chinese wall policy in multilevel security environment, authors use lattice to label data, and propose an improving policy in term of aggregate system. moreover, authors present a scheme using a database based history access and linklist of aggregate dataset of interest conflict
根據該環境中的chinese wall的利益沖突處理表現為數據聚合問題，利用數據標簽的格級標定，提出一種基於歷史訪問庫和利益沖突聚合鏈表的安全策略實現方法 -
Several mechanisms are provided to assure the system security based on the ultrakernel. separation, multilevel, hardware based access control and code error tolerance mechanisms are well integrated. ( 3 ) a developing platform and a firewall system prototype
整體採用可生存設計;在系統設計時加入了抗緩沖區溢出攻擊機制和對抗dos攻擊機制;設計了一種容忍代碼錯誤的機制，另外還採用隔離與分級機制，並對blp模型進行改進應用。 -
Second, discussing the detecting and eliminating of inference channel, different channel detecting methord are provided according to static, dynamic and compositional channel, and a new algorithm of eliminating the inference channel by promoting security was presented. third, discussing many problems encountered by transaction, which is from single - level to multilevel, and a transaction schedule algorithm is given based on data replicated architecture. according to the theory mentioned above, a mls / dbms is developed, and the experiment result has showed the correctness of the theory
本文圍繞安全數據模型，多級安全環境下的事務處理，推理控制展開了探討，首先針對空值的二義性和數據穿越問題，提出一種改進的多實例安全模型，並對外鍵引起的存儲隱通道進行了控制，提高了查詢的效率;其次探討推理通道的檢測和排除問題，針對靜態、動態推理通道和復合通道分別給出了不同的通道檢測方法，並提出一種通過提高輸入安全密級來消除推理通道的演算法;最後討論了事務從單級拓展到多級所面臨的各種難題，提出了一種基於數據復制結構的事務調度演算法。 -
First, by analysing the disadvangtages of the decomposition and recovery algorithm in the usual security model, a new algorithm of double structure tables, which is suitble for master - slaver structure tables, is presented in this paper. second, in resolving the semantic ambiguity and operational incompleteness easily emerged in master - slaver structure tables, an improved master - slaver structure table model and relative decomposition and recovery algorithm are provided. third, considering the merits and demerits of security model, a multilevel secure transaction model is defined on the basis of security model
本文通過分析以往安全模型的分解和恢復演算法的缺點，提出了一個適合於主從結構表這種雙結構表安全模型的分解和恢復演算法;針對主從結構表安全模型容易產生語義模糊性和操作不完備性等問題，提出了一個改進的主從結構表安全模型，並提出了其分解和恢復可行方法;討論了安全模型的優缺點，定義了建立在安全模型基礎之上的多級安全事務模型，分析了多級事務面臨的眾多難題，提出了一個安全、正確的多級事務調度演算法;根據上述的諸多理論，開發了一個多級安全數據庫管理系統的原型系統。 -
Based on its strong technology and economy foundation, the mastery of core technology in safe guard engineering, network communication and digital video, the company successfully implemented many projects in many social fields, such as in government, water conservancy department, commercial, education, large scale enterprise and police with the gaining of great social efficiency, which the projects include multilevel remote monitoring system, public security guard system, closed - circuit television, large - scale network communication, network education, multimedia network alternate education platform, multimedia conference system, multimedia video ordering system, digital video recording, and video broadcasting application
憑借強大的技術和經濟實力以及公司在安防監控工程、網路通訊和數字視頻技術領域所掌握的核心技術，本公司先後成功的實施了多級遠程監控系統、治安監控系統、閉路電視監控系統、大型網路傳輸工程、網路教學系統、多媒體網路交互教學平臺、多媒體會議系統、多媒體視頻點播系統、數字錄像、視頻廣播等工程已在政府、水利、金融、教育、大型企業、公安等多個行業中被廣泛應用，並取得了良好的社會效益。 -
For this, based on analyzing formalized design method, principles and architecture for designing formal model are proposed, then according to them, the model is designed hierarchically. first, a formal framework for supporting multipolicy is presented. second, some component models are constructed, including dynamically mediated security level rang multilevel security model dmlr - mls, which is used to implement confidentiality policy, and renamed as dblp model after it is combined with dac model, based - dte integrity protection security model dte - ipm, and privilege control model pcm - rbpc based on capability mechanism, role mechanism and dte privilege mechanism
本文主要研究開發高安全等級的操作系統所必需的安全策略形式模型，為此我們從形式設計方法的探討入手，確定模型設計的基本原則及組織結構，然後根據確定的組織結構逐步展開設計，提出支持多策略的形式框架、實現機密性策略的可動態調節安全級范圍的多級安全模型dmlr _ mls （本文把它與dac模型合在一起形成dblp模型） 、基於dte技術實現完整性保護的形式模型dte _ ipm及基於權能、角色及dte的特權控制模型pcm _ rbpc 。 -
This part put forward the system conception of kdd and the apriori algorithm. then evolved the create - frequent - set algorithm which was fit for the freight agent management system. because of the shortage of efficiency, 1 improved the algorithm. because some of the items were not boolean variables, 1 need the quantitaitve attributes association rules discovering algorithm. in general, there had the levels among the items, so multilevel association rules existed. after perfecting the algorithmic need interpret and evaluate the knowledge. in the end, 1 discussed the privacy and security of kdd. the fifth part described the future problems and prospect
第四章是論文的主體，著重介紹知識發現的全過程，按照semma方法論首先進行數據準備，然後進入數據挖掘階段，提出知識發現的概念體系和公認的apriori演算法，從該演算法演變出適合於貨代管理系統的生成頻繁項目集的演算法；因為在實際應用中存在效率上的不足，因此進一步地提出了改進方案；在事務處理中各個項目並不都是布爾型變量，因此需要特定的針對多值屬性的關聯規則發現演算法；通常情況下，項目之間存在有層次關系，因此多層次關聯規則的發現普遍存在；演算法完善並運行后需要對發現的知識進行解釋和評估；本章的最後討論了知識發現的私有性和安全性問題；第五章講述有待解決的問題和發展前景。 -
In this paper, we discuss the theories and the implemention method of concurrency control, present a new multilevel transaction model - - - nhstm and apply this model to the concurrency control mechanism for nhsdb, a multilevel security dbms prototype
本文對安全數據庫並發控制理論和實現方法進行討論，提出了nhstm多級事務模型，並將該模型應用於nhsdb多級安全數據庫的並發控制機制中。 -
Then, the paper summaries disadvantages of traditional concurrency controls under multilevel security condition and introduces multilevel security dbms concurrency control. after summarizing the related research work, we present a multi level transaction model to solve the convert channel and starvation problems in concurrent control under blp multi level security model
本文首先分析了傳統的數據庫並發控制各自存在的優缺點，總結了傳統並發控制在多級安全條件下存在的問題，由此引出了多級安全數據庫並發控制機制。在總結了已有的研究基礎上，針對blp多級安全模型下並發控制產生隱通道和饑餓問題，本文提出了一種多級事務模型- - - nhstm模型。 -
Database security theory and technology is an important research field of database theory. in this paper, we focus on secure data modle, inference control and transaction processing in multilevel secure environment
如何保護數據庫的安全成為信息安全中一個重要的研究方向。數據庫安全理論和技術是數據庫理論研究的重要方向。 -
Security constraints are consistent by modifying security constraint definition, and an effective classification assignment algorithm is given in this paper. we analyze the problem of inference channel and give solution to solve the problem during database analysis and design period. by analyzing the problems resulting from extending single - level transactions to multilevel transactions, we also give a multilevel secure transaction schedule algorithm based multiversion snapshot graph
本文提出採用主從結構表的方法對blp模型加以改造，使得改造后的blp模型具有較高的可用性和安全性；通過修改安全約束的定義，使得安全約束之間始終是協調的，並給出一種高效的密級分配演算法；討論了推理通道問題，給出了在數據庫分析、設計等階段可以採用的對策；分析了事務從傳統的單級擴展到多級面臨的眾多難題，給出了一種基於多版本串列化圖的事務調度演算法；根據上述理論，開發了一個多級安全數據庫管理系統的原型系統。 -
Multilevel security system based on pocs algorithm
演算法的多級安全共享 -
Chinese wall policy and its extension in multilevel security system
Chinese wall策略及其在多級安全環境中的擴展 -
It also discusses the technologies in the multilevel security and performance optimization of the system
此外，對于整個系統的性能優化技術也進行了探討及研究。 -
Third, based on the thorough research of the multilevel security models, integrity models and role - based access control models ( rbac ), a modified blp model ( mblp ) is designed and applied in a secure operating system developed independently. then, a well - integrated model of blp model, clark - wilson model, dte model and rbac models is proposed, leading to a prominent dynamic authorization access control model ( daacm ), which supports diverse security policies, including confidentiality, integrity and authorization
第三，在深入研究多級安全模型、完整性模型、基於角色的授權模型等基礎上，首先提出了一個修改blp模型（ mblp ）的方案，並在一個自主開發的安全操作系統中得到了應用；然後通過將blp模型、 clark - wilson模型、 dte模型、 rbac模型有機地集成應用，提升出一個支持機密性、完整性和授權等多安全策略的，可實現動態授權的訪問控制模型（ daacm ） 。
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