实用宽带新技术

简要介绍了三种宽带新技术及其应用，包括替代五类线的VDSL，可解决HFC上行噪音漏斗效应的SCDMA技术以及利用电源线传输高速数据的PLC技术。这些新技术由于具有较高的性能价值比和广阔的应用前景，受到了广泛的关注。     

基于图像测量的非饱和土p-s平面屈服轨迹研究

运用数字图像测量方法，测量非饱和土试样的整体变形和试样受端部约束影响较小的中部1／3区域的变形．控制吸力的非饱和压实土各向等压试验结果表明，试样整体与中部1／3区域的比体积与平均净应力的试验关系曲线存在明显差异，据此确定的LC屈服曲线也有差别．无论是试验值还是数值模型预测的结果，都是测量试样整体变形所得的弹性区较大．     

井口信号无线数传系统

目的　介绍了井口信号无线数传系统的设计 .方法　无线数传、低功耗电路设计 .结果　省去了井口信号线 ,降低了井口工作量 .结论　提高了测量精度和可靠性     

浅析免撤销公钥框架（PKI）

数字签名通常作为不可反驳的密码学证据用于解决电子交易中的纷争，但是其可信的时间戳和证书撤销服务在实际使用中代价很高。免撤销公钥框架作为一种新的PKI使得终端用户可以控制他自己的公钥证书的有效性，使验证证书不需要折回到CA去获取证书撤销信息．从而降低其使用代价。     

A study on UV-curable coatings for HD-DVD: Primer and top coats

This study relates to the development of coatings for optical discs in high-density digital versatile disc systems (HD-DVD or blue lay disk) that use a high numerical aperture of 0.85 at 405 nm wavelength and have a protective top layer over a primer layer for protection against damage and dust. Ultraviolet-curable raw materials of two acrylic monofunctional monomers ( isobornylacrylate, IBA and tetrahydrofurfurylacrylate, THFA) and two kinds of urethaneacrylate oligomers (OUMD and OUME) have been easily mixed with photoinitiators. Curing rate of these materials was characterized by FT-IR. In case of top coats, VTES (vinyltriethoxysilane) and acrylic acid were added to enhance the abrasion resistance. These two kinds of UV-curable resinous materials having no solvent were synthesized and investigated as means for making a blue ray disk having good optical and mechanical properties. In addition, dynamic characteristics including reflectivity, fluctuation of RF signal and noise level were also investigated.     

IEC 61850信息模型一致性的检验和控制方法

从继电保护故障信息系统的管理需求出发，针对继电保护等智能电子设备（IED）信息条目和语义缺乏统一的问题，提出一种以IEC 61850信息模型为管理对象、采用信息语义理论和面向对象理论的IED信息模型一致性检验及控制的方法。该方法能够将语义字典的管理由静态行为转变为面向过程的动态管理，以实现二次系统信息语义的一致性，并使其发展及变化过程受控。     

公开可得到的无密码水印系统的安全性分析

在许多水印商用场合，水印嵌入和检测软件作为一个黑盒子能够公开地被得到，基于这种水印系统模型，针对目前常用的三种水印嵌入方法进行安全性分析。理论分析表明，攻击者能够在保证电子产品质量的前提下很容易地删除水印，最后，提出相应的改进方向。     

数字移动电视的现状与发展前景

随着数字电视的普及推广,数字移动电视应运而生,并得到迅速发展。数字移动电视通常安装在交通工具上,兼具移动性和数字化的特点。它突破了传统电视固定收视的局限,带来了电视传播的新概念。同时,数字移动电视根据自身传播特性,不断探索新的运营模式,并带来一系列的产业链效应,蕴含着无限商机     

2D Image Construction from Low Resolution Response of a New Non‐invasive Measurement for Medical Application

This paper presents an application of digital signal processing to data acquired by the radio imaging method (RIM) that was adopted to measure moisture distribution inside the human body. RIM was originally developed for the mining industry; we are applying the method to a biomedical measurement because of its simplicity, economy, and safety. When a two‐dimensional image was constructed from the measured data, the method provided insufficient resolution because the wavelength of the measurement medium, a weak electromagnetic wave in a VHF band, was longer than human tissues. We built and measured a phantom, a model simulating the human body, consisting of two water tanks representing large internal organs. A digital equalizer was applied to the measured values as a weight function, and images were reconstructed that corresponded to the original shape of the two water tanks. As a result, a two‐dimensional image containing two individual peaks corresponding to the original two small water tanks was constructed. The result suggests the method was applicable to biomedical measurement by the assistance of digital signal processing. This technique may be applicable to home‐based medical care and other situations in which safety, simplicity, and economy are important.     

数字平均法的误差分析

文章针对以前提出的声时测量中的随机数字平均技术，给出了其理论依据，详细讨论了误差的大小，并利用概率统计理论进行了论证。同时，文中还提出均匀延时数字平均技术。在实际应用中，对该类仪器的测量误差的估计和测量次数的选取以及这类仪器的设计有着重要的指导作用。