Study on the Camouflage-Protective and Dyeing Properties of Natural Dye Indigo

There are two major camouflage protections in modern military tactics:UV-protection and near infrared camouflage.However,not all natural and composite dyestuffs provide the mentioned properties.In this study,the cotton fabric was dyed with natural indigo and the natural indigo dyeing process was optimized.Green leaves were chosen as the simulating object,and the camouflage properties of the dyed cotton fabric were evaluated.It was observed that the dyed cotton fabric had good UV-protection and near-infrared camouflage properties.The UV-protection effect was strongly dependent on the absorption characteristics of natural indigo for UV radiation.The near infrared camouflage effect was mainly dependent on the reflection spectrum characteristics of natural indigo in the near infrared waveband.     

无阀自激脉动燃烧器频率特性的参量分析

对影响无阀自激脉动燃烧器频率特性的因素（管段长度、收缩比、热源位置和温度分布）进行分析研究。结果表明,燃烧器进气段的长度调节对频率的影响大于出气段长度调节的影响;出、进气段截面积与燃烧室截面积的收缩比越大,频率下降越大;在燃烧器总长不变的情况下,燃烧室长度的调节对频率的影响不是单一的。     

State Fusion Estimation for Multilevel Multisensor System

Based on the single sensor Kalman filtering equations, this paper presents two-level and three-level optimal centralized and distributed estimation algorithms for hierarchical multisensor systems. The solution shows that when the correlated matrix, the mean of noise, the control input, and the measurement error are all zero, the result in this paper turns out to be the standard algorithm discussed. Simulation shows that the mean of noise, the control input, and the measurement error will not change the estimation covariance and the estimation covariance fluctuates greatly when the cross-correlated matrix is similar to the covariance of process noise.     

我国群众体育政策执行过程的非线性表象与特征

群众体育是一个复杂的系统,在群众体育政策执行过程中除了常见的线性因果联系外,还存在大量用常规经验和理性推导所难以解释的非线性现象。在此,作者分别从滞后特征、临界慢化特征、共振特征和多值响应特征等四个方面对群众体育政策执行进行了非线性解读,旨在为我国群众体育政策的有效执行提供一定的理论参考,进一步推进我国群众体育的快速发展。     

晶体场效应对第一过渡系正二价离子水合热的影响

以第一过渡系正二件离子水合热的变化为例,讨论d~N(N=1—10)组态离子在八面体场中晶体场稳定化能对水合热的影响.     

Statistical Constitutive Equation of Aramid Fiber Bundles

Tensile impact tests of aramid (Twaron) fiber bundleswere carried out under high strain rates with a widerange of 0. 01/s～1 000/s by using MTS and bar-bartensile impact apparatus. Based on the statisticalconstitutive model of fiber bundles, statisticalconstitutive equations of aramid fiber bundles are     

The Uniqueness of Major Efficient Solution for Multiobjective Programming Problem

1　 IntroductionWe consider the multiobjective programming problem:V-minx∈ Xf(x)… (VMP) whererestricted set X Rn,vector objective function f∶X→Rm(m 2 ) .The concept of major efficient solution andα-major efficient solution were firstintroduced by HU Yu-da[1 ] .Moreover,HU Yu-da proved the results thatmajor efficiencysolution setto(VMP) must be a single point set if the vector object function is a strictlyconvex vector function and there exists a major efficient solution in Refs.[1…     

Condensation of Water Vapor on Waterproof Breathable Fabrics

Condensation occurs when the local vapor pressure rises above the saturation vapor pressure at the local temperature in theory. A new measuring apparatus were made to obtain temperature and relative humidity simultaneously for the purpose of investigating the mechanism of condensation occurred on the fabrics. The experiment conducted at the standard condition of temperature of 20℃ and relative humidity of 65%. The result obtained from experiment showed that condensation could occur under the situation closed to saturation line as the temperature on fabric may be lower than dew point of water vapor in the measuring box depending on the experiment conducted at an ambient environment temperature of 20℃ The range of fabrics studied showed that PTFE laminated fabrics except nylon gingham PTFE laminated fabric facilitates the loss of water vapor and therefore prevent condensation. It is necessary to develop studies from a wide range of fabrics, especially breathable fabrics and under bad experiment conditio     

基于模型的多尺度间歇过程性能监控

利用神经网络对间歇过程的非线性和动态特征进行描述,神经网络的预测残差则利用多尺度主元分析进行建模,将多尺度主元分析扩展用于间歇过程的监控.这一方法突破了传统多向主元分析单模型、线性化的建模方式,是一种多模型非线性建模方法.它利用小波将每一残差信号分解为各个尺度上的近似部分和细节部分,而主元分析则用于分别建立各个尺度上的统计模型.通过对实际工业链霉素发酵过程数据的分析,表明文中所提出的方法与传统的多向主元分析方法相比,能够更早地发现故障,获得更好的监控性能.     

军需供给群体决策支持系统的设计与实现

本文描述了一个军需供给群体决策支持系统的结构,主要介绍了其中的仿真模块、评估方法和知识库,并提出了今后需进一步完善的地方.