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多Agent系统模型及其应用

计算机工程与应用 2003年第12期39卷 50-53页

作者：孙瑜夏幼明李志平中国科学院计算技术研究所智能信息处理重点实验室北京100080 云南师范大学计算机科学与信息技术学院昆明650092 云南师范大学计算机中心昆明650092

文章提出了基于访问、感知和知识的多Agent系统模型。从特定环境中的Agents为完成一定的任务所应具备的能力的角度出发,引入了环境状态划分函数、感知函数以及状态转移函数等来对Agents和环境进行研究并建立系统模型。该模型是合理的、... 详细信息

文章提出了基于访问、感知和知识的多Agent系统模型。从特定环境中的Agents为完成一定的任务所应具备的能力的角度出发,引入了环境状态划分函数、感知函数以及状态转移函数等来对Agents和环境进行研究并建立系统模型。该模型是合理的、自然的。同时,它还区分外部环境与Agents环境中可访问的信息,Agents感知到的信息以及Agents知道的信息,并研究了系统的运行过程。接下来,通过具体的实例来说明模型的具体应用。最后进行总结并讨论了进一步的研究工作。

关键词：多Agent系统模型访问感知知识

Construction of Resilient Functions

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Construction of Resilient Functions

The 1.t chinese Conference on Trusted {1. and information security

作者： ZHANG Jie, WEN Qiao-yan School of Science, beijing University of Posts and Telecommunications , beijing 1.0876, China State Key Laboratory of information security, chinese academy of sciences, beijing 1.0039, China

＜正＞ Based on the relationship between nonlinearity and resiliency of a multi-output function, we present a methodfor constructing nonintersecting linear codes from packing design. Through these linear codes, we obtain n-variable, m-output, t-resilient functions with very high nonlinearity. Their nonlinearities are currently the best results for most of

关键词： resilient functions packing design correlation-immune functions linear codes

A Novel Digital Audio Watermarking Scheme in the Wavelet Domain

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A Novel Digital Audio Watermarking Scheme in the Wavelet Dom...

The 1.t chinese Conference on Trusted {1. and information security

作者： Xiang-yang, YANG Hong-ying, ZHAO Hong School of Computer and information Technique, Liaoning Normal University, Dalian 1.6029, Liaoning,China State Key Laboratory of information security, institute of Software of chinese academy of sciences, beijing 1.0039, China

＜正＞ We present a novel quantization-based digital audio watermarking scheme in wavelet domain. By quantizing a host audio’ s wavelet coefficients （Integer Lifting Wavelet Transform ） and utilizing the characteristics of human auditory system （HAS）, the gray image is embedded using our watermarking method. Experimental results show that the proposed watermarking scheme is inaudible and robust against various signal processing such as noising adding, lossy compression, low pass filtering, re-sampling, and re-quantifying.

关键词： digital audio watermarking lifting wavelet transform human auditory system chaotic sequence quantization

基于组织机构的应用区域边界访问控制系统的研究

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计算机工程与应用 2004年第25期40卷 131-134,170页

作者：盛可军沈昌祥刘吉强海军工程大学武汉430033 海军计算技术研究所北京100841 北方交通大学信息安全体系结构研究中心北京100044

分析了应用区域边界安全系统的特点,指出了现有访问控制技术用于应用区域边界安全系统时所存在的不足,提出了适合于应用区域边界安全的访问控制形式化模型,给出并形式化地描述了基于组织机构的应用区域边界安全系统中实施访问控制管理... 详细信息

分析了应用区域边界安全系统的特点,指出了现有访问控制技术用于应用区域边界安全系统时所存在的不足,提出了适合于应用区域边界安全的访问控制形式化模型,给出并形式化地描述了基于组织机构的应用区域边界安全系统中实施访问控制管理时应遵循的规则。

关键词：访问控制基于角色应用区域边界安全

A Scheduling Heuristic for Large-Scale Heterogeneous computing Environments

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A Scheduling Heuristic for Large-Scale Heterogeneous Computi...

2007年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Xiao Li Du1.2, Chang Jun Jiang2,3, Fei Yin1.2 1.lectronics and information Engineering School, Tongji University Shanghai, 201.04, China 2Tonji Branch, National Engineering &{1. center of High Performance Computer Shanghai, 201.04, China 3Key Laboratory of Computer System and Architecture, institute of computing technology, chinese academy of sciences beijing, 1.0080, China

A group of features is defined to describe the synthetic performance of processing cells and distinguish their heterogeneousness in large-scale heterogeneous computing environments. Three notable features that can effectively partition the processing cells of target system with fuzzy clustering are verified through several groups of experiments. Based on fuzzy clustering results of the target system, a Scheduling heuristic algorithm is presented. In the scheduling stage, the cluster with better synthetic performance will be chose first. The algorithm greatly reduces the time spent on the processor selection for large-scale system. The priority designation of tasks takes the influence of critical path nodes and heterogeneous resource into consideration. Experimental results show that it performs very well compared with other algorithm.

关键词： Task Scheduling Heterogeneous computing Direct Acyclic Graph

“5432战略”:国家信息安全保障体系框架研究

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通信学报 2004年第7期25卷 1-9页

作者：王娜方滨兴罗建中刘勇国家发展与改革委员会高技术产业司北京100824 中国科学院计算技术研究所北京100080 国家计算机网络应急技术处理协调中心北京100029

信息安全的问题已经影响到了国家安全,因而需要从战略上研究国家信息安全保障体系的框架。本文从信息安全的表现形式入手,分别给出了信息安全在技术与社会层面上的表现形态,以及与信息安全相关的信息网络的几个基本规律。在此基础上,提... 详细信息

信息安全的问题已经影响到了国家安全,因而需要从战略上研究国家信息安全保障体系的框架。本文从信息安全的表现形式入手,分别给出了信息安全在技术与社会层面上的表现形态,以及与信息安全相关的信息网络的几个基本规律。在此基础上,提出了“5432”国家信息安全战略:从目的、任务、方式、内容的角度,阐述了保障信息与信息系统的机密性、完整性、可用性、真实性、可控性五个信息安全的基本属性;建设面对网络与信息安全的防御能力、发现能力、应急能力、对抗能力四个基本任务;依靠管理、技术、资源等三个基本要素;建设管理体系、技术体系两个信息安全保障的基本体系,最终形成在这一战略指导思想下的国家信息安全保障体系的框架。

关键词：信息安全保障战略

information-Theoretic Analysis for the Difficulty of Extracting Hidden information

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Information-Theoretic Analysis for the Difficulty of Extract...

The 1.t chinese Conference on Trusted {1. and information security

作者： ZHANG Wei-ming, LI Shi-qu, CAO Jia, LIU Jiu-fen Department of information {1., information Engineering University,Zhengzhou 450002, Henan, China State Key Laboratory of information security, (Graduate School of the chinese academy sciences), beijing 1.0039, China

＜正＞ The difficulty of extracting hidden information, which is essentially a kind of secrecy, is analyzed by information-theoretic method. The relations between key rate, message rate, hiding capacity and difficulty of extraction are studied in the terms of unicity distance of stego-key, and the theoretic conclusion is used to analyze the actual extracting attack on Least Significant Bit（LSB） steganographic algorithms.

关键词： information hiding steganography extracting attack difficulty of extraction unicity distance

Algebraic Attack on Filter-Combiner Model Keystream Generators

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Algebraic Attack on Filter-Combiner Model Keystream Generato...

The 1.t chinese Conference on Trusted {1. and information security

作者： WU Zhi-ping. YE Ding-feng, MA Wei-ju State Key Laboratory of information {1.(Graduate School of chinese academy of sciences), beijing 1.0039, China

＜正＞ Algebraic attack was applied to attack Filter-Combiner model keystream generators. We proposed the technique of function composition to improve the model, and the improved model can resist the algebraic attack. A new criterionfor designing Filter-Combiner model was also proposed: the total length L of Linear Finite State Machines used in the model should be large enough and the degree d of Filter-Combiner function should be approximate [L/2].

关键词： algebraic attack Filter-Combiner model stream cipher "XL" algorithm function composition

Correlation Degree and Correlation Coefficient of Multi-Output Functions

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Correlation Degree and Correlation Coefficient of Multi-Outp...

The 1.t chinese Conference on Trusted {1. and information security

作者： JU Gui-zhi, ZHAO Ya-qun institute of {1. Engineering, {1. Engineering University, Zhengzhou 450002, Henan,China State Kay Laboratory of {1. security, chinese academy of Science, beijing 1.0039,China

＜正＞ We present definitions of the correlation degree and correlation coefficient of multi-output functions. Two relationshipsabout the correlation degree of multi-output functions are proved. One is between the correlation degree and independency, the other is between the correlation degree and balance. Especiallythe paper discusses the correlation degree of affine multioutputfunctions. We demonstrate properties of the correlation coefficient of multi-output functions. One is the value range of the correlation coefficient, one is the relationship between the correlation coefficient and independency, and another is the sufficientand necessary condition that two multi-output functions are equivalent to each other.

关键词： multi-output functions independency correlation degree balance correlation coefficient