“三网合一”在现代企业CIMS网络工程中的应用

本文介绍了光纤ＣＡＴＶ网结构,ＨＦＣ“三网合一”集成接入系统的网络结构、系统功能、实现方法,并结合现代企业ＣＩＭＳ网络工程,提出企业ＨＦＣ系统设计方案。     

HFC网络计费管理的分析与研究

对ＨＦＣ网的Ｉｎｔｅｒｎｅｔ服务计费机制进行了分析和设计,讨论了针对ＨＦＣ网的用户接入特点,分析了计费系统中的一些关键问题和难点,从而提出解决方法。     

A COUNTER－EXAMPLE TO A FAST ALGORITHM FOR FINDING THE CONVEX HULL OF A SIMPLE POLYGON

ＡＣＯＵＮＴＥＲ－ＥＸＡＭＰＬＥＴＯＡＦＡＳＴＡＬＧＯＲＩＴＨＭＦＯＲＦＩＮＤＩＮＧＴＨＥＣＯＮＶＥＸＨＵＬＬＯＦＡＳＩＭＰＬＥＰＯＬＹＧＯＮＧｏｄｆｒｉｅｄＴｏｕｓｓａｉｎｔＡＣＯＵＮＴＥＲ－ＥＸＡＭＰＬＥＴＯＡＦＡＳＴＡＬＧＯＲＩＴＨＭＦＯＲＦＩ...     

分析与评测

扩展定位音效艺片ＣＭＩ８７３８／ＰＣＩ－６ＣＨＨＲＴＦ Ｃ３Ｄ Ｅｘｔｅｎｓｉｏｎ Ｐｏｓｉｔｉｏｎａｌ Ａｕｄｉｏｃｏｍ ＣｈｉｐＣ－Ｍｅｄａ５．１ＣＨ功能演示系统硬件： ＰＣ（８７３８ ６ＣＨ）－功放（Ａｍｐｌｉｆｉｅｒ－５．１音箱 软件：４／６ＣＨ ＤＥＭＯ Ｖ２． ５ ＨＲＴＦ ３Ｄ 技术 １． ＨＲＴＦ 的来源和标准 ＨＲＴＦ ３Ｄ 来源及标准 ＨＲＴＦ是 Ｈｅａｄ Ｒｅｌａｔｅｄ Ｔｒａｎｓｆｅｒ Ｆｕｎｃｔｉｏｎ的缩写,译为“头部相关传递函数”,最出名的就是 Ｓｅｎｓａｕｒａ的 ＨＲＴＦ ３Ｄ,而 Ｃ－ Ｍｅｄ…     

仿人智能控制与模糊控制神经网络融合技术

在分析了仿人智能控制器（ＨＩＣ）的特性基础上,针对其不足,提出将仿人智能控制器与模糊控制相融合的仿人智能模糊控制器（ＨＩＦＣ）,实践表明ＨＩＦＣ的性能大大优于基本ＨＩＣ和一般模糊控制器。最后提出一种正交基函数神经网络模型实现ＨＩＦＣ的方法,为ＨＩＦＣ的自学习提供了一条有效途径。     

非线性对流－扩散方程的高阶特征－差分格式及其误差估计

非线性对流－扩散方程的高阶特征－差分格式及其误差估计由同顺（南开大学数学系）ＨＩＧＨ－ＯＲＤＥＲＣＨＡＲＡＣＴＥＲＩＳＴＩＣ－ＤＩＦＦＥＲＥＮＣＥＳＣＨＥＭＥＳＦＯＲＴＨＥＮＯＮＬＩＮＥＡＲＣＯＮＶＥＣＴＩＯＮ－ＤＩＦＦＵＳＩＯＮＥＱＵＡＴＩＯＮＡＮ...     

校园网的HFC宽带Internet接入

本文介绍了Ｉｎｔｅｒｎｅｔ接入技术，并重点阐述了ＨＦＣ（光纤同轴混合）网接入技术和深职院校园网ＨＦＣ宽带Ｉｎｔｅｒｎｅｔ接入方案与实施，特别对实施过程中遇到的特殊问题进行分析并给出了解决方案。     

IP电话及其在线缆调制解调系统上的应用

ＩＰ电话采用的信道复用和基于分组交换的传输技术提高了线路传输利用率。ＨＦＣ网双向改造的完成和 ＤＯＣＳＩＳ的不断完善为开展 ＩＰ电话增值业务提供了理想的接入网平台。本文研究了ＩＰ电话技术的现状、发展趋势,以及 ＩＰ电话的标准 Ｈ．３２３规约、 ＳＩＰ、 ＭＧＣＰ、 ＲＴＰ／ＲＴＣＰ和ＲＳＶＰ。最后介绍了一种国内开发的 ＨＦＣ网上ＩＰ电话应用系统。     

INTERNETHFC接入技术及其应用

本文介绍了ＩＮＴＥＲＥＮＴ接入技术,并重点介绍了ＨＦＣ网接入技术和深圳职业技术学院校园ＩＮＴＥＲＮＥＴＨＦＣ接入方案与实施。     

利用HFC技术实现三网合一

（接上期）ＨＦＣ业务的关键技术 ＨＦＣ网络可以提供的业务有语音（如电话）、数据传输（如计算机通信、电子邮件）、视频传输（如 ＶＯＤ／ＮＶＯＤ、模拟／数字广播电视）等,基本上综合了当今的新技术。ＨＦＣ宽带网业务的关键技术要解决４个问题：数字压缩技术、宽带交换技术、有限制接受系统和ＨＦＣＬＡＮ互联技术。 数字压缩技术：带宽一直是困扰通信界的大问题,尤其是传输数字化的运动图像。如何充分利用现有带宽传输尽可能宽的信号就自然而然地成为摆在我们眼前的课题。数字压缩编码这一新技术的出现给解决带宽的问题提供了途径…     

Optimal location policy for three competitive facilities

Competitive facility location problems have been investigated in many papers. In most, authors have applied location models with two competitors. In this paper three companies, which are mutually competitive, intend to locate their facilities in a linear market. It is well-known that Nash equilibrium solution for location problem does not include three competitive facilities. In this paper we present the optimal location strategies for three facilities. In our model we assume that the demands are continuously distributed in a linear market and the facilities are locating according to a specific order of sequence, A, B and C. We apply the Stackelberg equilibrium solutions for competitive location problems with three facilities. In our model, we consider the decision problems in three stages. In the first stage, we decide the optimal location of facility A, which is located optimally in respect to the remaining two facilities B and C. In the second stage, we determine the optimal location of facility B which is optimally located in respect to facility C, by utilizing the information on the location of facility A. Finally in the third stage problem we decide the location of facility C, optimally located by utilizing the information on the location of A and B. In the first stage, we need the optimal solutions of the second and third stages. In the second stage we need the optimal solution of the third stage problem. Therefore, first we solve the third stage problem which is the simplest. After that, we solve the second stage problem utilizing the optimal solution strategy of the third stage problem. In this paper we present the optimal location strategies for three facilities.     

Divergence-Free Wavelet Analysis of Turbulent Flows

In this paper we study the application of divergence-free wavelet bases for the analysis of incompressible turbulent flows and perform several experiments. In particular, we analyze various nominally incompressible fields and study the influence of compressible perturbations due to experimental and computational errors. In addition, we investigate the multiscale structure of modes obtained from the Proper Orthogonal Decomposition (POD) method. Finally, we study the divergence-free wavelet compression of turbulent flow data and present results on the energy recovery. Moreover, we utilize wavelet decompositions to investigate the regularity of turbulent flow fields in certain non-classical function spaces, namely Besov spaces. In our experiments, we have observed significantly higher Besov regularity than Sobolev regularity, which indicates the potential for adaptive numerical simulations.     

An analysis of muscles from ultrasound image using morphological information of fascia and thoracic vertebra

In this paper, we propose a new fully computerized image analysis method for measuring the thickness of muscles from ultrasound image obtained by muscle endurance test using morphological information of fascia and thoracic vertebra. Firstly, we divide the image into lumbar region and thoracolumbar region by the difference of density in image for measuring the thickness of muscles. In lumbar region, we notice that the intensity of fascia is relatively higher than other parts. Thus, we measure the thickness of muscles surrounding the fascia area. In the process, we apply median filter to candidate fascia areas for extracting candidate muscle layers between fascias. Then, the thickness of muscles we measure is that of the third layer. In thoracolumbar region, we apply region expansion method for classifying the region into subcutaneous fat part and part including thoracic vertebra. Then, we apply counting method and evolutionary computation search model to find the measuring location that is in between subcutaneous fat area and thoracic vertebra. In experiment, the proposed method is effective in measuring the thickness of muscles and avoids failures of previous studies. The performance of this approach is sufficiently comparable to that of medical experts.     

Towards a Symbolic Interpretation of Approximate Reasoning

We study knowledge-based systems using symbolic many-valued logic and we focus on the management of knowledge through linguistic concepts characterized by vague terms or labels. In previous papers we have proposed a symbolic representation of nuanced statements. In this representation, we have interpreated some nuances of natural language as linguistic modifiers and we have defined them within a multiset context. In this paper, we continue the presentation of our symbolic model and we propose new deduction rules dealing with nuanced statements. We limit ourself to present new generalizations of the Modus Ponens rules dealing with nuanced statements.     

Complex Dynamics of Systems Under Delta-Modulated Feedback

In this paper, we cast the design ofDelta-modulated control of a high-order system into the study of control Lyapunov functions. We classify the complex dynamics of the closed-loop system in three cases. In the first case, we show how Delta-modulated feedback introduces a finite set of globally attracting periodic points. We find the numbers and periods of all possible such periodic orbits. In addition, we characterize the attracting region for each of such periodic points. In the second case, we show that there is a maximal "stabilizable" region, and inside this region, there is a local attractor. In the last case, we show that all the states stabilizable by the Delta-modulated feedback constitute a Cantor set. This Cantor set is a repeller, and the closed-loop system is chaotic on the Cantor set     

The convergence order for iterative multipoint procedures

Summary In this paper we study the convergence order for iterative multipoint procedures with memory and we determine also upper bounds for such an order. As a particular case, from the formulae we have deduced, we also obtain the convergence orders of iterative multipoint procedures without memory. In addition we fix the conditions which are necesary and sufficient to make such procedures optimal.     

Current and future research directions in network optimization

In this paper, we discuss a number of current and future research directions in network optimization. First, we categorize current research efforts as primarily methodological or primarily applied and we carefully define the boundaries of each class. In addition, we survey the present capabilities of network algorithms. Next, we delineate objectives in each class. Finally, we list several network problems for each class that should, in our opinion, be investigated and we give pertinent background information.     

基于WebServices的基建项目管理系统的研究与实现

本文首先介绍了软件系统的开发背景和预期要达到的目标,然后在系统的体系结构上进行了简单的分析,在使用的关键技术进行了简单的介绍,对系统在系统安全方面进行了详细的介绍,最后介绍了整个软件系统的特点.     

基于智能卡的电子商务身份认证模型

讨论了使用智能卡来完成身份认证功能的技术可行性，最后提出了保护智能卡系统免受攻击的几种方法。