现代军用通信设备结构设计新理念

科学技术在不断发展，军用通信设备结构设计的内涵也在不断丰富，时代在不断进步，人们对设备的审美要求越来越高，设计人员应顺应时代发展的潮流，积极吸收、采用新的设计理念。本文详细讨论了有关军用通信设备结构设计新理念的主要内容-创新设计、模块化设计、小型化设计、工业设计和超前设计。     

用户光盘的分发与应用

介绍了适用于用户光盘分发的便携式（ＰＤＦ）文件及其创建方法，并提出了创建过程中应用技巧与体会。     

Density matrix of a quantum field in a particle-creating background

We examine the time evolution of a quantized field in external backgrounds that violate the stability of vacuum (particle-creating backgrounds). Our purpose is to study the exact form of the final quantum state (the density operator at the final instant of time) that has emerged from a given arbitrary initial state (from a given arbitrary density operator at the initial time instant) in the course of evolution. We find a generating functional that allows one to obtain density operators for an arbitrary initial state. Averaging over states of the subsystem of antiparticles (particles), we obtain explicit forms of reduced density operators for the subsystem of particles (antiparticles). Analyzing one-particle correlation functions, we establish a one-to-one correspondence between these functions and the reduced density operators. It is shown that in the general case a presence of bosons (e.g., gluons) in the initial state increases the creation rate of the same type of bosons. We discuss the question (and its relation to the initial stage of quark–gluon plasma formation) whether a thermal form of one-particle distribution can appear even if the final state of the complete system is not in thermal equilibrium. In this respect, we discuss some cases when pair-creation by an electric-like field can mimic the one-particle thermal distribution. We apply our technics to some QFT problems in slowly varying electric-like backgrounds: electric, SU(3) chromoelectric, and metric. In particular, we analyze the time and temperature behavior of the mean numbers of created particles, provided that the effects of switching the external field on and off are negligible. It is demonstrated that at high temperatures and in slowly varying electric fields the rate of particle-creation is essentially time-dependent.     

Noncommutative Berezin transforms and multivariable operator model theory

In this paper, we initiate the study of a class of noncommutative domains of n-tuples of bounded linear operators on a Hilbert space H, where m?2, n?2, and p is a positive regular polynomial in n noncommutative indeterminates. These domains are defined by certain positivity conditions on p, i.e.,

     

模糊传感器概念生成方法的研究

本文在简要介绍了模糊传感器概念生成基本原理的基础上,结合作者的研究工作,详细论述了概念生成的各种方法,对于开展模糊传感器的研究具有重要的理论意义和较大的实用价值     

关于3G平台的手机动漫短片创作方法探讨

改革开放以来，随着经济的增长，社会的发展，文化之间的碰撞，新兴的ACG文化在文化的大融合中受到广泛关注并发展迅速，规模不断扩大。同时，受科学技术成果的普及，3G新媒体时代使得手机成为新兴第五大媒体，动漫也逐渐向移动终端媒体平台方向发展，手机动漫短片应运而生。本文浅要讲述手机动漫与3G平台的特点，后对手机动漫短片的创作方法进行分析并探讨其未来的发展趋势。     

A Study of Probability Measures Through Commutators

The first-order moments and two families of commutators are proven to determine uniquely the moments of a probability measure on ℝ ^d . These families are the commutators between the annihilation and creation operators, and the commutators between the annihilation and preservation operators. An explicit method for recovering the moments from these commutators and first-order moments is presented.      

变频器的造型设计与创新

随着现代工业的不断发展和人类物质文明的进步，人们对产品的需求越来越高了，不但要求产品具有完善的、科学的使用功能，同时还要求产品的造型设计形态应具有一定的审美性和宜人性。为了提高国产变频器品质和市场竞争力，现阶段和未来，国内变频器企业应把造型设计和创新的观念和原理融入企业的产品开发过程和实践中。设计的精髓是以人为本，在变频器的造型设计当中，应具有造型设计的特征和要素，遵循造型设计的原理、原则，这样才能使国产变频器在外观上更符合社会的需求和满足人们的心理需要，而不是建立在一味的模仿国外的设计上。创新是设计的灵魂，它将为变频器带来新的生命力，使之在激烈的市场竞争中取得优势。     

系统集成企业质量管理体系的策划、建立与实施

本文阐述了系统集成企业如何按ISO 9001:2000版标准要求,策划、建立与实施质量管理体系,并通过体系认证.对系统集成企业产品实现过程的质量控制要点作了详细介绍.     

Differential coefficients of orthogonal matrix polynomials

We find explicit formulas for raising and lowering first order differential operators for orthogonal matrix polynomials. We derive recurrence relations for the coefficients in the raising and lowering operators. Some examples are given.