制作系统应用虚拟化技术的探讨

对云计算中的虚拟化技术在广电制作系统中的应用进行了探讨.分析了传统制作系统现存的一些问题和弊端,对非编工作站的虚拟化方式和过程、服务器端和存储的虚拟化进行讨论,并提出了把编辑与渲染功能分离的想法.其主旨是要充分利用系统资源和提升系统效率,提高制作系统的可用性和扩展性,同时减少投资成本,简化管理平台和减轻系统压力.其目的是最大限度消除传统制作系统存在的问题,提升广电竞争力.     

入侵检测系统研究进展

信息安全是人们高度关注的问题,我国信息安全与网络的防护能力尚处于发展的初级阶段.回顾了入侵检测系统的起源及其发展过程.在阐述入侵检测基本概念和类型的基础上,指出了目前各种入侵检测系统的优点和局限性.数据挖掘技术是克服目前入侵检测系统局限性的一种有效方法.介绍了数据挖掘的概念,并提出了一种基于数据挖掘的入侵检测系统框架.蜜罐系统和蜜网系统也是当前研究的热点问题,对其进行了分析,给出了应用实例.最后指出了下一步研究应该努力的方向.     

分析无线电通信中天线的作用

天线是无线电通信技术中的重要部件.天线的功能是信号传播,它是输出信号的部件.所有的无线电通信系统都是电波的输出和接收,因此,所有的无线电通信系统都离不开天线,它是重要的前端部件,对天线的正确选择和正确的假设关系到整个无线电通信系统的质量.     

一种新的基于MIMO信道的闭环系统

提出了一种新的基于MIMO信道的闭环系统,该系统是将旋转矩阵和注水原理相结合的一种闭环V-BLAST系统.旋转矩阵可以增加系统的发射分集度,从而有效提高系统性能;注水原理是当发射端已知信道信息时的一种最优的功率分配算法,它可以大大提高系统的频谱利用率.分析与仿真结果表明,该系统具有较高的频谱利用率和较好的误比特性能.     

船载AIS无线传输系统的软硬件可靠性设计

船舶自动识别识别系统(AIS)是一种新型的助航系统和设备,在海事通信中将会发挥着巨大的作用.无线传输系统是该系统中底层的重要组成部分.为了使无线传输系统更加稳定,可靠性更高,我们提出了在软件和硬件方面提高可靠性的思路和方法,尤其是对软件方面的方法进行了重点的研究和探讨.     

机载电子设备通用自动测试系统研究与实现

自动测试系统作为军事装备中的重要组成部分,可大大降低武器系统的维护时间.科学技术的发展和军方的需求,促使了通用综合测试系统的产生和广泛应用.机载电子设备通用自动测试系统是一套开放的,可扩展测试系统.通用性实现的关键是系统硬件结构标准化、软件结构及软件基础构件标准化、测试程序编程语言标准化.结合机载电子设备的应用背景,给出了通用自动测试系统硬件平台、软件平台设计与实现,对设计出的通用测试系统进行了试验,经分析可以满足通用性设计要求.     

浅析北京电视台新广告业务系统

广告系统是北京电视台核心业务系统之一.本文重点论述了北京台新广告系统的建设,新技术应用和系统测试等方面的设计和实现过程.     

CIMS中的集成和现代集成制造系统中的优化

计算机集成制造系统(CIMS)是一种新的制造理念,而现代集成制造系统是CIMS的扩展.两者组成当今企业信息化的最佳实现方案.文中分析了CIMS中的信息集成和现代集成制造系统中的系统优化问题,提出CIMS的核心是集成,而现代集成制造系统的核心是集成和优化.     

第三代红外搜索和跟踪（IRST）系统

红外搜索和跟踪系统是现代战争中重要的关键系统之一,随着军事的需要以及红外焦平面阵列的迅速发展,已经开始第三代红外搜索和跟踪系统的研究.第三代IRST系统的主要特点是探测和识别距离远,具有360°水平全景覆盖范围,单波段或双波段工作.本文主要介绍正在研制的几种典型的IRST系统,包括法国Thales的"月女神"IRST、法国Sagem的VAMPIR NG IRST、以色列Rafael的海上观察者等系统.未来的IRST系统将是多波段、多功能系统,能够实现全空域探测.文中还介绍了一些新的解决方案,如采用球形传感器和曲面焦平面,改善IRST系统的能力.     

基于STM32F407单片机的智能安防系统

实现小区的安全管理的重要监控系统是小区安全防范报警系统,安全隐患主要包括盗窃、煤气泄漏、火灾消防等.该系统是控制技术、计算机技术和网络通讯技术相结合,设计具有防盗,防火和防煤气泄露功能安防报警系统.     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and sub-pixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.     

INTEGRATION OF OPTICAL AND WIRELESS NETWORKS

正For a long time,optical and wireless systems/net-works are developed in separate communities witha few attempts for in-depth convergence.In fact,it prom-ises many advantages to combine the optical and wire-less technologies in the levels of systems and networks.Recently,both academia and industry have made manyefforts to enter a new phase of development to take op-tical and wireless systems as fully integrated networks.To provide high bandwidth and reliable service for bothfixed and mobile users,a well-designed network must     

社长序言（英文）

正Happy New Year!As we step into a new year,we take a look back at the key feature topics covered in China Communications over the past 12 months and set out our expecta-     

云计算专题（英文）

正Cloud computing is a novel computing paradigm that utilizes remote cloud resources to achieve a high-performance computation.Cloud provides infrastructure,platform and software as different on-demand services.China has made remarkable progress in cloudbased products and operating system technology.The government,enterprises and research institutions are all active in the development of cloud computing-related projects.Despite the progress,many important problems     

Call for Papers—Feature Topic,Vol.12,No.3,2015

正Smart Grid Communications The electric power industry is undergoing profound changes as the industry aims to capture the promise of a smart grid for a sustainable energy future.Enabled by the advanced sensing devices such as Phasor Measurement Units(PMUs),increasingly powerful