采用硬件加脱密算法实现IPv6网关

针对IPv6网络协议,提出了采用硬件加脱密算法的网关模型。该模型通过构建ESP安全隧道能够保证IPv6网络环境中数据的完整性和机密性。模型的实现技术采用软硬件相结合的方法,采用硬件方式提高加脱密处理速度。同时还针对预留的QoS字段探讨出一套利用密码网关来配合实施服务质量的方案。     

含位置参数的广义Weibull分布及其置信限估计

通过引入位置参数,建立了能够同时描述浴盆曲线失效率和最大安全寿命的广义Weibull分布模型族,进而采用秩分布理论给出确定该寿命分布族置信限估计的参数化方法。具体分析了目前广泛应用的一种广义Weibull分布,导出该模型参数的置信区间估计与分布函数的置信上、下限曲线函数关系式。文中还进行了模拟验证与实例对比分析。     

土工膜衬垫填埋场边坡稳定性数值分析

基于边坡稳定性分析的极限平衡原理,建立了考虑渗流影响和地震作用的土工膜衬垫填埋场边坡稳定性分析模型,通过对各种参数的灵敏度分析,得出了填埋场边坡安全系数的变化规律.研究结果表明:边坡角度和界面摩擦角对土工膜衬垫填埋场边坡稳定性影响最大,填埋场边坡安全系数随着边坡角度、边坡长度、渗透力、地震影响系数的增大而减小,随界面摩擦角的增大而增大,覆盖土层摩擦角的变化对填埋场安全系数基本无影响;在考虑了边坡渗流作用和地震影响时,土工膜衬垫的填埋场边坡安全系数降低.研究结果可为垃圾填埋场边坡几何参数的确定提供理论依据,同时为垃圾填埋场边坡稳定设计及防护提供技术支持.     

可重构视频阵列处理器测试平台设计与实现

针对可重构视频阵列处理器的设计要求及传统测试方法测试视频编解码系统时速度慢、精度低和可观测性不强的问题。开发了基于Qt的用户界面,设计实现了以现场可编程门阵列(Field programmable gate-array,FPGA)为核心的软硬件协同测试平台。在PC端实现以软件仿真为基础的数据传输与图像重现,在FPGA端实现以可重构视频阵列处理器为基础的视频编解码算法并行映射。实验结果表明,在工作频率为100 MHz时,FPGA与PC之间可正确传输数据并满足算法测试时不同测试用例的更换需求,具有较好的可观测性。     

机构投资者指令提交策略的影响因素

采用上海股票市场的数据,通过有序概率单位分析模型对机构投资者指令提交策略的影响因素进行事前分析。结果表明:对于买方投资者来说,指令的进取性与买方深度成正相关,与卖方深度成负相关;对于卖方投资者来说,指令的进取性与卖方深度成正相关,与买方深度成负相关。此外,买卖价差和波动性与指令的进取性成负相关关系。     

Fundamentals of the analytic network process — Dependence and feedback in decision-making with a single network

The Analytic Network Process (ANP) is a multicriteria theory of measurement used to derive relative priority scales of absolute numbers from individual judgments (or from actual measurements normalized to a relative form) that also belong to a fundamental scale of absolute numbers. These judgments represent the relative influence, of one of two elements over the other in a pairwise comparison process on a third element in the system, with respect to an underlying control criterion. Through its supermatrix, whose entries are themselves matrices of column priorities, the ANP synthesizes the outcome of dependence and feedback within and between clusters of elements. The Analytic Hierarchy Process (AHP) with its independence assumptions on upper levels from lower levels and the independence of the elements in a level is a special case of the ANP. The ANP is an essential tool for articulating our understanding of a decision problem. One had to overcome the limitation of linear hierarchic structures and their mathematical consequences. This part on the ANP summarizes and illustrates the basic concepts of the ANP and shows how informed intuitive judgments can lead to real life answers that are matched by actual measurements in the real world (for example, relative dollar values) as illustrated in market share examples that rely on judgments and not on numerical data. Thomas L. Saaty holds the Chair of University Professor, Katz Graduate School of Business, University of Pittsburgh, Pittsburgh, PA, and obtained his Ph.D. in mathematics from Yale University. Before that he was a professor at the Wharton School of the University of Pennsylvania for ten years. Prior to that he spent seven years at the Arms Control and Disarmament Agency in the State Department in Washington, DC, that carried out the arms reduction negotiations with the Soviets in Geneva. His current research interests include decision-making, planning, conflict resolution and synthesis in the brain. As a result of his search for an effective means to deal with weapons tradeoffs at the Disarmament Agency and, more generally, with decision-making and resource allocation, Professor Saaty developed The Analytic Hierarchy Process (AHP) and its generalization to dependence and feedback, the Analytic Network Process (ANP). He is co-developer of the software Expert Choice and of the software Super Decisions for decisions with dependence and feedback. He has authored or co-authored twelve books on the AHP/ANP. Professor Saaty has also written a number of other books that embrace a variety of topics, including Modern Nonlinear Equations, Nonlinear Mathematics, Graph Theory, The Four Color Problem, Behavioral Mathematics, Queuing Theory, Optimization in Integers, Embracing the Future and The Brain: Unraveling the Mystery of How It Works. His most recent book is Creative Thinking, Problem Solving & Decision Making. The book is a rich collection of ideas, incorporating research by a growing body of researchers and practitioners, profiles of creative people, projects and products, theory, philosophy, physics and metaphysics...all explained with a liberal dose of humor. He has published more than 300 refereed articles in a wide variety of professional journals. He has been on the editorial boards of Mathematical Reviews, Operations Research, Naval Research Logistics Quarterly, Mathematical and Computer Modeling, Socio-Economic Planning Sciences, Applied Mathematics Letters, and several others. He also served as consultant to many corporations and governments.     

消除增长上限制约的管理对策生成法——-以银河杜仲区域规模养种生态能源系统发展为例

社会经济复杂系统中存在大量增长上限问题,刻画此问题的增长上限基模是由正反馈环、 负反馈环和延迟构成,其中负反馈环存在抑制系统不断发展的制约作用. 针对负反馈环产生制约作用的根本原因是存在起制约作用的负因果链, 首先基于对负因果链所属负反馈环中极大开环的结构特征分析, 遵循极大开环中输入变量改变量小于零的原则生成初始对策集, 接着根据复杂系统发展的多目标筛选得到目标筛选初始对策集, 再根据对策的实际实施条件筛选获得可操作的管理对策集, 然后仿真验证双筛选得到的管理对策的有效性.以银河杜仲区域规模养种生态能源系统发展为例, 基于2008-2010年的历史数据和其他实际信息,建立含七个核心变量的增长上限基模,利用此方法生成三条可操作性的管理对策. 以核心变量为基础,建立六棵流率基本入树,建立仿真模型.然后,定量仿真分析了消除增长上限制约的管理对策生成法的实施效应, 实现了从定性至定量综合有效分析,为实际系统发展提供决策依据,验证了此消除增长上限制约管理对策生成法的有效性.     

Asymptotic limits and stabilization for the 1D nonlinear Mindlin-Timoshenko system

<正> This paper shows how the so called von Karman model can be obtained as a singular limitof a modified Mindlin-Timoshenko system when the modulus of elasticity in shear k tends to infinity,provided a regularizing term through a fourth order dispersive operator is added.Introducing dampingmechanisms,the authors also show that the energy of solutions for this modified Mindlin-Timoshenkosystem decays exponentially,uniformly with respect to the parameter k.As k→∞,the authors obtainthe damped von Karman model with associated energy exponentially decaying to zero as well.     

高炉富氧条件下喷煤极限研究

通过对攀钢４号高炉富氧条件下煤粉在风口回旋区内的燃烧率的数学模拟研究可知：在攀钢４号高炉入炉焦比５８０ｋｇ／ｔ,风温１０５０℃等生产条件下,当喷煤量超过１５５ｋｇ／ｔ,风中富氧率高于２％,才能使高炉顺行。如果风中富氧低于４％,吨铁最大喷煤量为１７５ｋｇ／ｔ。当喷煤量超过２１０ｋｇ／ｔ,风中富氧率即使达到１０％,也不能满足高炉最佳热状态,将造成未燃煤粉量过高,导致高炉不顺。     

连续双向拍卖机制下的短期价格行为分析

建立描述限价指令市场中连续双向拍卖交易机制下短期价格动态变化的理论模型.通过对该机制下的几个特征变量包括最佳(高)买价、最佳(低)卖价、买卖价差、成交价格和成交概率的分析揭示连续双向拍卖机制下的短期价格行为,并着重探讨其均衡性质包括成交价格所收敛到的竞争均衡及达到均衡的时间.研究结果表明建立的理论模型能较好地刻画连续双向拍卖机制下短期价格的动态演进特征,进而印证连续双向拍卖交易机制能快速收敛到竞争均衡从而产生很高的价格发现效率的相关结论.