McKean-Vlasov limit for interacting random processes in random media

We apply large-deviation theory to particle systems with a random mean-field interaction in the McKean-Vlasov limit. In particular, we describe large deviations and normal fluctuations around the McKean-Vlasov equation. Due to the randomness in the interaction, the McKean-Vlasov equation is a collection of coupled PDEs indexed by the state space of the single components in the medium. As a result, the study of its solution and of the finite-size fluctuation around this solution requires some new ingredient as compared to existing techniques for nonrandom interaction.     

氮杂多环芳烃~（13）C－NMR化学位移的理论探讨

本文主要是对氮原子以ｓｐ~２杂化，孤氮电子占据ｓｐ~２杂化轨道，以这种形式成键的氮杂交变多环芳烃中的１１个化合物的~（１３）Ｃ－ＮＭＲ的化学位移进行了计算。该计算依据ＣＮＤＯ方法一个联系分子电荷密度，键级和键长等参数的半经验公式。同时利用环电流、空间效应以及针对氮原子的屏蔽效应和去屏蔽效应的影响，通过分子动力学的考虑，得到理论上计算的化学位移，该计算结果与实验值吻合得很好，通过时~（１３）Ｃ－ＮＭＲ化学位移的回归分析表明，回归系数达到０．９９，非常好地反映了氮杂多环芳烃~（１３）Ｃ－ＮＭＲ化学位移与分子微观结构之间的关系，同时表明我们在处理诸多化学位移时考虑到的因素是合理可行的。     

掺杂金微粒Na_2O-B_2O_3-SiO_2系统玻璃的溶胶-凝胶方法制备及其光学性质的表征

采用正硅酸乙酯，硼酸，乙醇钠为先驱体，乙醇，乙二醇甲醚和乙醇为先驱体溶剂，并采用氯化金的水溶液为掺杂金微粒的先驱体，通过热处理使氯化金分解出金原子而使其长出金微粒，达到制备掺杂金微粒玻璃的目的。在钠硼硅系统干胶的制备过程中，详细地研究了氯化金的引入量等对大块干胶性质的影响，并确定了引入氯化金的适宜浓度。详细研究了干胶向玻璃转变的制备工艺，并成功地制备了掺杂金微粒的大块玻璃。采用X-射线衍射仪进行掺杂金微粒干胶和玻璃的桥晶与否分析，用紫外-可见吸收光谱研究了它们的光学性质。用透射电镜表征了金微粒在玻璃基质中的颗粒大小及分布，采用Z－Scan装置表征了此种玻璃的三阶非线性光学性质，得到折射率n2＝8．22×10－12esu。     

Navier－Stokes方程的变网格非协调有限元法

本文通过所谓的速度－压力型公式讨论了Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程的变网格非协调有限元逼近，得到了在确定模意义下的速度、压力误差估计，且在一定条件下，某些误差估计能达到最优。     

SiGe HBT大信号等效电路模型

基于SiGe HBT(异质结双极晶体管)的物理模型，建立了描述SiGe HBT的大信号等效电路模型.该等效电路模型考虑了准饱和效应和自热效应等，模型分为本征和非本征两部分，物理意义清晰，拓扑结构相对简单.该模型嵌入了PSPICE软件的DEVEO(器件方程开发包)中.在PSPICE软件资源的支持下，利用该模型对SiGe HBT器件进行了交直流特性模拟分析，模拟结果与理论分析结果相一致，并且与文献报道的结果符合较好. 关键词： SiGe HBT 等效电路模型 PSPICE     

基于模糊语言判断矩阵和FIOWA算子的有限方案决策法

定义一种模糊的导出有序加权平均(FIOWA)算子，给出方案之间比较的模糊语言标度。运用模糊语言标度构造出模糊语言判断矩阵，并提出一种基于模糊语言判断矩阵和FIOWA算子的有限方案决策方法。该法利用FIOWA算子对模糊语言信息进行集结，并利用已有的三角模糊数排序公式求得决策方案的排序。     

Contribution of UV light to the decomposition of toluene in dielectric barrier discharge plasma/photocatalysis system

The contribution of UV light from plasma and an external UV lamp to the decomposition of toluene in a dielectric barrier discharge (DBD) plasma/UV system, as well as in a plasma/photocatalysis system was investigated. It was found that UV light from the DBD reactor was very weak. Its contribution to the removal of toluene in the plasma/photocatalysis system could be ignored. Whereas, the introduction of external UV light to the plasma significantly improves the removal efficiency of toluene by 20%. The removal efficiency of toluene in the plasma/photocatalysis system increased about 22% and 16% when compared with a plasma only system and plasma driven photocatalyst system, respectively. The increased toluene removal efficiency was mostly attributed to the contribution of the synergy between plasma and UV light, but not to the synergy between plasma and photocatalysis. The synergetic effect between plasma and photocatalysis was not significant.     

Fully packaged high-speed Ti:LiNbO3, waveguide mach-zehnder intensity modulator

A fully packaged high-speed Ti:LiNbO₃, Mach-Zehnder intensity modulator at a 1.5μm wavelength has been designed and fabricated. The design has been considered with respect to optical insertion loss, switching voltage, and modulation bandwidth. Re fiber-pigtailed device has a 6.7 dB fiber-to-fiber loss and an optical modulation bandwidth of 8 GHz. The voltage required to switch the device from the on to off state is measured to be 7.3 V, with an on-off extinction ratio of 21 dB.     

激发能升高级联裂变到瞬发多重碎裂的演化

分析⁴⁰Ar+¹⁵⁹Tb、¹⁹⁷Au、²⁰⁹Bi(25MeV/u)中心碰撞产生的三体碎片产物的角关联,配合Ar+Au(60MeV/u)三体出射的数据,分析非完全熔合反应产生的高激发核衰变的演化过程,证明了在25MeV/u入射能时激发核产生的三重大质量碎片是级联的两次出射的裂变形成的,其时间差尺度大约为1000fm/c,而对60MeV/u入射能下的激发核观察到重碎片在120°附近出现强的角关联,这在理论上解释为发射时间差较短,即出现了瞬发的多重碎裂.     

大气环境质量评价的灰色模型

大气环境是一个包含未知信息的灰色系统，根据其灰色性．运用灰色系统理论可以克服目前一些环境质量评价方法（综合指数法、概率统计法、模糊综合评判法）的局限性，使评价结果更为科学和客观。