胶粒分形粒子簇反应控制聚集动态行为位垒影响的Monte Carlo模拟

通过对反应控制聚集过程的MonteCarlo模拟,从微观及介观层次上探讨了胶粒间相互作用位能曲线上位垒高度的变化对胶粒分形粒子簇大小分布和动态标度函数及聚集动力学行为的影响规律。     

Singularly Perturbed Markov Chains: Convergence and Aggregation

Asymptotic properties of singularly perturbed Markov chains having measurable and/or continuous generators are developed in this work. The Markov chain under consideration has a finite-state space and is allowed to be nonstationary. Its generator consists of a rapidly varying part and a slowly changing part. The primary concerns are on the properties of the probability vectors and an aggregated process that depend on the characteristics of the fast varying part of the generators. The fast changing part of the generators can either consist of l recurrent classes, or include also transient states in addition to the recurrent classes. The case of inclusion of transient states is examined in detail. Convergence of the probability vectors under the weak topology of L² is obtained first. Then under slightly stronger conditions, it is shown that the convergence also takes place pointwise. Moreover, convergence under the norm topology of L² is derived. Furthermore, a process with aggregated states is obtained which converges to a Markov chain in distribution.     

Fractal approach to the intephase in filled polymers

A fractal model of a filled polymer is proposed. The model allows us to estimate quantitatively the volume of an interphase, to take into account geometrical factors influencing the character and the interphase adhesion level, and to predict the mechanical strength of interfacial bonds. This makes it possible to calculate the size of the critical structural defect and the mechanical properties of filled polymers, which are in agreement with the experimental data. Translated from Mekhanika Kompozitnykh Materialov, Vol. 36, No. 1, pp. 3–32, January–February, 2000.     

最强Orlicz-Pettis拓扑

引进了lp（p≥1）空间的子集是本性紧概念,借此给出了抽象对偶系统（E,F）中最强Orlicz－Petits拓扑SOP（E,F）以及产生该拓扑的最大映射集族的表示．利用此结果搞清楚了现有两种Orlicz－Petits拓扑即Dierolf拓扑（M）和Twed－dle拓扑（E,T’）的确切意义以及它们之间的相互关系．指出了的最大性所蕴涵的理论意义和应用价值．证实了σ（F,E）-条件紧集和σ（F,E）-可数紧集都含于中。进而实质性地改进了矢位测度论中的Graves－Rness定理、抽象函数论中的Thomas定理等重要结果．     

应力和位移约束下连续体结构拓扑优化

同时考滤应力和位移约束的连续体结构拓扑优化问题,很难用现有的均匀方法或变密度方法等求解。主要困难在于难以建立应力和位移约束与拓扑设计变量间显式关系式;即使建立了这种关系,也由于优化问题规模过大,利用常规的数学规划方法难以求解。隋允康、杨德庆曾提出了基于独立连续拓扑变量及映射变换（ＩＣＭ）的桁架结构拓扑优化模型。本文在此基础上,建立了以重量为目标,考虑应力和位移约束的连续体结构拓扑优化模型,并推导出     

锌空电池气体扩散电极浸液量对放电性能的影响

锌空电池气体扩散电极在存放和放电过程中,电解液会在毛细力的作用下不断浸入电极。电解液在气体扩散电极中的浸入量与分布情况决定了气体扩散电极中的化学反应活化区,从而影响放电性能。通过实验测量了气体扩散电极开始浸液的4天内浸液量与放电性能的关系,并借助拓扑网络数值模拟电解液浸入多孔介质的过程帮助理解该实验现象。结果表明,随着放电过程的进行,浸液量和分布情况不断变化;气体扩散电极放电性能变化主要分为3个阶段:浸液饱和度为39.4%时放电性能最佳;浸液开始2~24小时进行迅速,浸液饱和度达到81%,放电性能小幅下降;24小时之后浸液增速大幅减缓,放电功率随浸液量增加大幅下降。     

基于事件触发的战术互联网拓扑更新策略

重点论述了一种基于事件触发的战术互联网拓扑更新策略,并将之与传统的拓扑更新策略进行比较论证,认为基于事件触发的拓扑更新策略能较好地兼顾无线信道的特点和用户移动的需求,从而使战术互联网的整体性能达到最佳。     

短波组网拓扑结构研究

从拓扑结构的角度研究短波通信,根据短波通信的特点,给出了几种有针对性的拓扑结构,并进行了分析。     

关于机场光纤通信运用的讨论

介绍光纤接入网的概念,阐述光接入网在通信网中的重要性和发展趋势,以及光接入网各种网络拓扑结构,提出了选择光接入网网络结构的根据,并进一步讨论了民航机场有线通信中光接入网的实施及构想.     

胜利光纤物理网络发展模式初探

本根据目前光纤物理网络技术的发展趋势,参考国内在光缆网络建设方面的经验,对胜利光纤物理网络的发展模式以及规划建设中应注意的问题进行探讨。