Control of discrete-time HMM partially observed under fractional Gaussian noises

A discrete-time control problem of a finite-state hidden Markov chain partially observed in a fractional Gaussian process is discussed using filtering. The control problem is then recast as a separated problem with information variables given by the unnormalized conditional probabilities of the whole path of the hidden Markov chain. A dynamic programming result and a minimum principle are obtained.     

Effective dimensions and relative frequencies

Consider the problem of calculating the fractal dimension of a set X consisting of all infinite sequences S over a finite alphabet Σ that satisfy some given condition P on the asymptotic frequencies with which various symbols from Σ appear in S. Solutions to this problem are known in cases where

(i)

the fractal dimension is classical Hausdorff or packing dimension (by work of Volkmann and Olsen), or

(ii)

the fractal dimension is effective (even finite-state) and the condition Pcompletely specifies an empirical distribution π over Σ, i.e., a limiting frequency of occurrence for every symbol in Σ.

In this paper, we show how to calculate the finite-state dimension (equivalently, the finite-state compressibility) of such a set X when the condition P only imposes partial constraints on the limiting frequencies of symbols. Our results automatically extend to less restrictive effective fractal dimensions (e.g., polynomial-time, computable, and constructive dimensions), and they have the classical results (i) as immediate corollaries. Our methods are nevertheless elementary and, in most cases, simpler than those by which the classical results were obtained.     

ActiveX控件在Modbus协议自动测试系统中的应用

介绍了Modbus协议与ActiveX控件技术,以及基于Modbus协议通信的ActiveX控件实现;同时介绍了Modbus自动测试系统的流程和方案。最终说明了ActiveX控件技术的应用为MODBUS协议自动测试系统的开发提供了一种快速有效的解决方案。     

皮肤流电响应监护系统与PC串口通信的设计

运用Visual Basic6.0开发了一套基于皮肤流电响应信号(GSR)的波形显示及分析系统.介绍了自行研制的皮肤流电响应硬件监护系统的硬件组成,利用VB中的MSComm控件实现计算机与GSR监护系统的串行通信,给出了详细的程序设计过程.     

COM+及其基于属性编程

讨论了作为Ｗｉｎｄｏｗｓ ＤＮＡ架构的核心部分的ＣＯＭ＋在原有ＤＣＯＭ和ＭＴＳ的基础上提供的多种服务以及ＣＯＭ＋的基于属性编程。     

GPS及其在移动指挥控制系统的开发

全球定位系统,又称GPS,是新一代的导航定位系统。它能够为全球任意地点、任意多个用户同时提供高精度的、全天候的、连续的、实时的三维定位、三维测速和时间基准。由于这一体系在定位、导航、测速、授时等方面的高效率。高精度,因此它在测绘和导航方面具有广泛的应用。文章首先介绍了全球定位系统的概况,讲述了全球定位系统的原理;然后,介绍了应用于民用移动定位的MC2S（移动指挥控制系统）的框架,并着重介绍了GPS信息接收部分模块的详细设计过程。最后,文章指出了系统的改进之处和发展方向。     

面向产品族的建模技术研究

文中针对大规模定制生产中的快速变型设计要求,研究了产品族模型的组成和表达方法,提出了产品族建模中的关键技术;建立了一个适合于产品族建模的信息环境。     

Windows98系统下的远程维护方法

指出在Windos98操作系统下远程维护的必要性,并从理论上分析了实现远程维护的可能性,最后给出实现远程维护的两种方法。     

Structural Synthesis of Modular Weakly Connected Neural Networks. I. Methodology of Structural Synthesis of Modular Neural Networks

Structural models of modular neural networks without loops are considered. The notion of a weakly connected network is introduced. A genetic principle of generation of weakly connected neural networks is proposed, and its reproductive power is proved on the basis of the theory of categories. Algorithmic realizations of structural synthesis are considered. Some examples are given.     

基于MTS构建分布式医疗信息系统

中间件通过屏蔽事务管理等底层机制,简化了分布式系统的开发,文章探讨了微软事务管理服务器的特点及其事务管理的机制。总结了在ＭＴＳ基础上开发医疗信息系统的经验。