随机环境SMDP的弱收敛逼近

在随机环境半马氏决策过程的计算方法中,直接从最优方程求最优策略或求ε最优值函数都会遇到困难,本文讨论的弱收敛逼近提供解决这类问题近似计算的一种方法     

氮化层组织与干式滚动磨损性能的研究

本文利用X光衍射仪、金相显微镜和声发射等手段对38CrMoAlA,35CrMo,40Cr钢经纯氨离子氮化,纯氨加钛离子氮化以及气体氨化后的渗层组织,硬度及干式滚动磨损性能进行了观察和分析。结果表明:加钛离子氮化可以显著提高工件渗层的硬度;但由于脆性增加而不利于干式滚动磨损;离子氮化处理后抗干式滚动磨损性能最佳。     

回归M分位数过程的渐近性质

考虑线性模型的Ｍ分位数过程．在某些一般的条件下，证明了该过程收敛到高斯过程．     

Mental processes and disorders: A neurobehavioral perspective in human biometeorology

Summary Research concerning the complex relation between weather and psychological processes has emphasized three important issues: methodological problems, the determination of the major behavioral factors, and the isolation of neurobiological mechanisms. This paper reviews the current status of each issue. Weather changes are most frequently associated with behaviors that are the endpoints of inferred psychological processes that include mood, subclinical pain, anxiety, and the correlates of schedule shifts. Learning and conditioning appear to mediate a powerful influence over weather-related responses. This may explain the large individual variability in these behaviors. The most well-known group effects associated with weather changes involve psychiatric populations. Clinical subpopulations may respond in different ways to different aspects of the same weather system as well as to different types of air masses. Likely neurobiological mechanisms through which meteorogenic stimuli may mediate whole organismic effects include the locus coeruleal and limbic systems. Expected psychobiological consequences are examined in detail. The magnitude and temporal-spatial characteristics of weather effects indicate they are the subject matter of behavioral epidemiology.     

基于高斯混合模型的多模态过程监测

本文针对多模态复杂过程的多变量、多工序、变量时变性以及模态转换时间不确定等多种特性,提出基于高斯混合模型的多模态过程监测算法;针对离线数据没有模态标签的问题,提出离线数据分类算法;针对在线数据无法对应模态类型的问题,提出在线数据模态识别算法.并在以上方法的基础上建立多模态过程监测模型,以连续退火机组为背景,利用实际生产...     

水解酸化+EGSB+A/O组合工艺处理硫酸粘菌素生产废水

针对某制药厂所排放的废水有机污染物成分复杂、含盐量高等特点,在小试基础上设计了以膨胀颗粒污泥床(EGSB)为主体的"水解酸化+EGSB+A/O"作为废水处理的主体工艺,并运用于工厂运行。在调试过程中EGSB处理单元根据反应器中的挥发酸、碱度和颗粒污泥状态等主要参数调整进水量、循环水量。经调试后EGSB处理单元中COD去除率可达到60%~80%,硫酸根的去除效果明显,厌氧过程中氨氮无去除;A/O处理单元经16 d运行后,COD处理率趋于稳定,氨氮处理率为70%,有待进一步提高。在运行一段时间后,组合工艺COD去除率为90%,氨氮去除率达到70%。分析结果表明,该工艺运行效果稳定,对该类制药废水的处理是非常有效的。     

基于CSP的网络协议描述与仿真

首先提出一种基于CSP的协议形式化描述方法.这种方法把协议看成交互实体,从而能很方便地描述协议间的交互关系以及仿真一个协议交互系统.在此基础上,提出了基于CSP的网络协议仿真方法,介绍了仿真流程及其核心模块.这种仿真方法以CSP文档的解析为起始,随后生成协议交互的仿真场景,最终调用仿真核心模块输出仿真结果.给出了TCP协议描述的实例,并以此为输入对TCP协议的连接过程进行了仿真,生成了可视化的仿真结果.这些研究表明这种协议形式化描述及其仿真的方法具有较好的理论和应用价值,并为实现自动化的协议开发平台奠定了基础.     

A Benefit Measurement Framework for an Online Contract Change Management System

The contract change management (CCM) system is an online collaboration tool, which supports the contract change management process of new engineering contract (NEC) contract. It is currently used in practice on a wide range of civil, power, and building projects in the UK. The aim of this study is first to identify the tangible and intangible benefits of the system through a user survey; then to develop a framework to measure these benefits. A questionnaire survey is conducted, which reveals that CCM can help project teams improve process effectiveness, reduce risk of process failures, and increase the compliance with NEC requirements. Subsequently, a spreadsheet tool is developed to allow CCM users to calculate the tangible cost savings as a result of using the system. For intangible benefits, a change management maturity model (CM3) is developed, which provides a measurement framework for assessing the improvement of a project team’s capability in dealing with contract changes.     

一个混合粒子模型的存在性

讨论相空间为X={0,1,2}Z,其中Z为整数集的一个混合粒子模型,即两个粒子接触-排它过程,并给出它的存在性.     

A local asymptotic behavior for ruin probability in the renewal risk model

Let R（t）=u＋ct-∑ I=1^N（t） Xi,t≥0 be the renewal risk model, with Fx（x）being the distribution function of the claim amount X. Let ψ（u） be the ruin probability with initial surplus u. Under the condition of Fx（x） ∈ S^＊（γ）,y ≥ 0, by the geometric sum method, we derive the local asymptotic behavior for ψ（u,u ＋ z] for every 0 （ z （ oo, On one hand, the asymptotic behavior of ψ（u） can be derived from the result obtained. On the other hand, the result of this paper can be applied to the insurance risk management of an insurance company.