三层干扰下的最优无线电信道问题的研究

研究了 2 0 0 0年 MCM— B题 ,将问题推广到有三层干扰的复杂情况 ,给出并严格证明了 ( k,1,1)问题的最优解     

Structure of Callisto and Ice Holes on Its Surface

The discovery of the induced magnetic field of Callisto that is a satellite of Jupiter has been interpreted as evidence for a subsurface salty liquid-water ocean,so we consider a layered structure of callisto,i.e.,a rock-metal core,an outer layer of ice and a middle layer of ocean.For the rock-metal core we try to indicate how the temperature,pressure and mass density depend on the depth.Due to motionn across the magnetic field of Jupiter in a plasma environment,the ice shell of Callisto must be broken down by electric current.     

掺铝氧化锌(AZO)导电薄膜的研究进展

综述透明导电薄膜的性能、种类、制备工艺、研究及应用状况,重点讨论掺铝氧化锌(AZO)薄膜的结构、导电机理、光电性能和当前的研究焦点。并指出,为了进一步提高透明导电薄膜的性能,应从以材料选择、制备工艺、多层膜光学设计等方面深入研发,以满足尖端技术的需要。     

激光束偏转法检测金属表面层的缺陷

本文编程计算了由激光光热应产业的金属表面的温度分布和泵浦光的调制频率、金属层厚度等的关系，预言检测浓度缺陷的能力。用激光光束偏转法检测到表面下不同深处的缺陷，并把面扫描幅值信号以三维象和灰度象显示。     

内燃结构氢氧合成氧化不均匀的原因及对策

从流体力学和传热学的角度，分析了在口径氧化炉中，采用内燃结构进行了氢氧合成氧化，造成硅片氧化层厚度不均匀的原因。并根据流体力学和传热学的原理，提出了解决这一问题的方法－设计了扰了流隔热装置。     

LB技术制备大面积超薄PMMA抗蚀层的研究

采用自行研制的ＬＢ自动提膜装置，制备出大面积（１０×８ｃｍ２）、高质量的ＰＭＭＡ超薄抗蚀剂膜，并将其用于高分辨率铬掩模版的研制。通过电子束曝光，湿法蚀刻，制作了分辨率优于０．５μｍ，特征线宽０．３８μｍ的４（１００ｍｍ）铬掩模版。     

YBa2Cu3O7／PBa2Cu3O7多层膜微结构的高分辨电镜研究

ＹＢａ２Ｃｕ３Ｏ７／ＰＢａ２Ｃｕ３Ｏ７多层膜微结构的高分辨电镜研究刘维张云孙吉军＊赵柏儒＊李林＊（中国科学院物理研究所，＊国家超导实验室，北京１０００８０）通过改变非超导层的厚度，可以有效地调节超导薄膜的各向异性，所以多层膜的制备和研究能够加深对层状...     

ATM网络中的信令适配研究

讨论了宽带综合业务数字网(B-ISDN)中的信令适配(SAAL)及其软件实现。详细分析了SAAL各子层协议.探讨了SAAL连接管理、流量控制、差错控制的实现方法.最后分析了SAAL的协议性能。     

Vapour Recoil Effect on a Vapour Liquid System with a Deformable Interface

A new two-sided model of vapour-liquid layer system with a deformable interface is proposed. In this model, the vapour recoil effect on the Marangoni-Bénard instability of a thin evaporating liquid layer can be examined only when the interface deflexion is considered. The instability of a liquid layer undergoing steady evaporation induced by the coupling of vapour recoil effect and the Marangoni effect is analysed using a linear stability theory. We modify and develop the Chebyshev-Tau method to solve the instability problem of a deformable interface system by introducing a new equation at interface boundary. New instability behaviour of the system has been found and the self-amplification mechanism between the evaporation flux and the interface deflexion is discussed.