Updating method for the computation of orbits in parallel and sequential dynamical systems

In this article, we provide a matrix method in order to compute orbits of parallel and sequential dynamical systems on Boolean functions. In this sense, we develop algorithms for systems defined over directed (and undirected) graphs when the evolution operator is a general minterm or maxterm and, likewise, when it is constituted by independent local Boolean functions, so providing a new tool for the study of orbits of these dynamical systems.     

Self-adaptive learning based immune algorithm

A self-adaptive learning based immune algorithm (SALIA) is proposed to tackle diverse optimization problems, such as complex multi-modal and ill-conditioned problems with the high robustness. The SALIA algorithm adopted a mutation strategy pool which consists of four effective mutation strategies to generate new antibodies. A self-adaptive learning framework is implemented to select the mutation strategies by learning from their previous performances in generating promising solutions. Twenty-six state-of-the-art optimization problems with different characteristics, such as uni-modality, multi-modality, rotation, ill-condition, mis-scale and noise, are used to verify the validity of SALIA. Experimental results show that the novel algorithm SALIA achieves a higher universality and robustness than clonal selection algorithms (CLONALG), and the mean error index of each test function in SALIA decreases by a factor of at least 1.0×10⁷ in average.     

储能技术对未来电网发展的作用分析

剖析了传统电网发展模式的局限性,指出大力发展储能环节,将有望从根本上解决大规模间歇式新能源的高效综合利用,可缓解电网运行中的安全压力,增强电网自身的调控能力,有利于实现节能减排目标,且有可能使发电及用电环节相互独立。指出未来电力系统的发展将主要依赖于在电网负荷中心设立分布式的灵活储能装置和负荷调控机制,并提出了未来电力系统中发电和输电网规划、设计、建设、运行及控制的新理念。     

论水利水电工程前期勘察设计取费依据

水利水电工程前期勘察设计取费存在执行依据版本多、对取费依据认识模糊、工作深度要求与费用不匹配等问题,并介绍了目前涉及水利水电工程前期勘察设计取费的依据主要内容,结合水利水电工程前期工作内容与特点揭示了问题的主要焦点,阐明水利水电工程前期勘察设计应根据水利水电工程特点取费,不能统一按“1283号文”.在分析了现行前期勘察设计取费主要依据、产生背景,尤其是对“1352号文”进行深入解读后,认为水利水电工程前勘察设计取费应采用“1352号文”作为依据.     

国华惠电二期工程辅助车间控制方案探讨

为实现减员增效、提高自动化水平,国华惠电二期工程新建辅助车间拟实行集中控制。文章结合该电厂的现状,分析了现有辅控网的特点,比较了二期辅助车间的多种控制方案,并给出了推荐性意见。     

Chaos emerged on the ‘edge of chaos’

Rule 110 is a complex cellular automaton (CA) in Wolfram's system of identification, capable of supporting universal computation. It has been suggested that a universal CA should be on the ‘edge of chaos’, which means that the dynamical behaviour of such a system is neither simple nor chaotic. There is no doubt that the dynamical property of Rule 110 is extremely complex and still not well understood. This paper proves the existence of subsystems on which this rule is chaotic in the sense of Devaney.     

公钥密码体制的同态性分析

同态加密算法是基于秘密同态的概念,是秘密同态的一个子集。同态加密技术可以对加密数据直接进行运算,并且运算结果也自动加密。正是基于此,使得同态加密技术在安全多方计算、数据库加密、电子投票等领域具有广泛的应用。同态特性主要包括加法特性、乘法特性、混合乘法特性。文章对目前广泛应用的三大公钥密码体制的同态特性进行了分析,并对满足加法同态的Pallier密码体制进行了研究。为后续研究全同态加密算法提供理论基础和方法指导。     

基于多FPGA的NoC多核处理器验证平台设计

为了能够灵活地验证和实现自主设计的基于NoC的多核处理器,缩短NoC多核处理器的设计周期,提出了设计集成4片Virtex-6-550T FPGA的NoC多核处理器原型芯片设计/验证平台.分析和评估了NoC多核处理器的规模以及对FPGA硬件资源的需求,在此基础上给出了集成4片FPGA的开发板详细设计方案,并对各主要模块如互联架构、电源、板级时钟分布、接口技术、存储资源等关键设计要点进行阐述.描述了开发板各个主要模块的测试过程和结果,表明了该设计的可行性.     

1~5轮LBlock的多项式表示及完全性分析

用统计测试方法分析密码算法的完全性存在误差。为此,利用符号计算软件Mathematica 7.0,以明文和密钥比特为自变量,得到LBlock分组密码第1轮~第5轮输出的多项式表达式,结果显示,LBlock第5轮输出的任何比特至多与45个明文比特、49个密钥比特有关,说明5轮LBlock还未达到完全性。