非晶硅太阳能电池的新进展

对非晶硅材料的物理性能及工艺优势进行了阐述，其中介绍了一种新型的刻划成图工艺，即等离子CVM，简单回顾了非晶硅太阳池的历史发展，分析了非晶硅太阳电池当前所存在的问题，提出了其发展的方向，其中，主要论述了叠层非晶硅太阳电池，并介绍了几种新型的非晶硅电池，最后，概括了非晶硅太阳电池的应用现状及前景。     

Wedding……

兄弟结婚了，朋友结婚了，朋友的朋友结婚了；男的结婚了，女的结婚了，不男不女的也结婚了；有感情的结婚了，没感情的结婚了，认识不认识的结婚已经无所谓了……     

马

马，本来自由自在的在山间撒野，渴了喝点山泉，累了就睡在地上晒太阳，无忧无虑。可是自从有了伯乐，马的命运就改变了，给它的头戴上笼辔，在它的背上置放鞍具，栓着它，马的死亡率已经是十之二三了，然后再逼着它运输东西，强迫它日行千里，在它的脚上钉上铁掌，马的死亡率就过半了。     

Internet防火墙及其发展趋势

本叙述了Internet来自外部，内部，硬件，软件方面的十种安全威胁和攻击，给出了防火墙的限制，隔离，筛选，过滤和屏蔽作用，介绍了防火墙的六种基本结构类型，论滤了过滤路由器，双宿主主机，主机过滤，过滤子网和吊带式五种安全结构，分析了传统防火墙的七种不足，给出了目前防火墙混合应用包过滤技术，代理服务技术和其他一些技术的发展趋势。     

“掘金”网络优化市场——移动通信网络优化服务特点及其发展策略

移动通信网络优化服务由于借助了设备厂商和专业第三方优化服务公司的技术优势，很好地提升了现有网络运行的质量，弥补了网络运营商技术人员的缺口，培养了运行维护人员的专业技能，积极发挥了现有网络资源的利用率，有效地降低了网络的维护成本，提高了客户的满意度和运营效益，     

频道多了，节目也要跟上

频道多了，节目也要跟上吴为忠文年岁渐长，早已过了不惑之年，到了这样的年龄，晚上如果没有公务缠身就懒得外出，看电视似乎成了我业余生活的一个主要内容。但是，电视看得多了，总忍不住要说三道四，这也许是一种职业病。我的住处已经装上了闭路电视，又与有线电视台联...     

价格决定一切——Konica Minolta Dynax5D/α-5 DIGITAL

现在数码单反相机的价格已经越来越低了，甚至还出现了5000元左右的产品。当然，相机有了，除了镜头之外，剩下的最重要的东西就是存储卡了，对于那些喜欢疯狂拍片的摄友来讲，这款4GB的高速CF卡成了他们的最佳选择，有了它，你再也不用担心使用数码伴侣会意外丢失数据了。而且从何种上来讲，也会方便100倍！     

基于相关法的合成孔径雷达运动目标的参数估计

本文针对合成孔径雷达运动目标的运动参数估计问题，将方位向频谱相关法用于运动目标的参数估计，本文详细探讨了频谱相关法，给出了相应的框图，在此基础上，利用自适应滤波的概念，引入了时域估计的方法，将两者在计算量进行了比较，并采用在原始数据中注入运动目标的方法，通过计算机模拟，给出了不同信噪比和不同运动速度下的参数估计曲线，将两方法进行了比较，得出了一些有参考意义的结论。     

基于FPGA技术的DRAM分时存取方法

介绍了一种基于现场可编程技术对DRAM进行读写和刷新操作的方法，根据现场可编程器件设计的特点，结合DRAM读写和刷新时序的要求，提出了同步化操作DRAM的思想，给出了具体同步化操作DRAM的实现方法，针对现场可编程器件设计中经常有多模块同时存取DRAM芯片的需求，提出了对DRAM芯片进行分时存取的方法，讨论了该方法的实现机制，结合具体的项目设计，给出了分时存取方法的关键时序，避开了复杂的DRAM控制器，节省了设计资源，简单方便地解决了DRAM操作的仲裁问题。     

用于成像引信图像识别的局部特性提取技术

根据成像引信的扫描成像机理，在详细分析了引信目标图像特性的基础上，论述了四种适用于引信目标图像的局部特征：角点，轮廓曲线段形状特征，线矩和弯曲能量，并提出了一种子块特征的提取算法。最后，分析了在应用局部特征进行了识别时遇到的问题并指出了解决方法，本文的研究对于其他不完整图像识别问题，如工件识别，机器人视觉，场景分析，医学图像的解释，飞行器的识别等，同样很有意义。     

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 subpixel 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