最新一代系统节电器的综合介绍——G4 Speed Uni Saver

本文较全面地介绍系统节电器，包括生产，趋势，污染后果，浪涌型式，性能，特点，原理，应用场合，参数，各代区别，第四代的优点，装置方式，功率确定，动能区别，系统框图，使用结论等。     

从大哥大到三哥三中国3G十年马拉松

近日，在全国信息产业工作会议上，信产部部长王旭东的讲话再次提到了对3G的看法，王旭东称，一，经过多年的努力，我国发展3G的条件已基本成熟；二，要继续做好TD-SCDMA规模网络技术应用试验，充分考虑电信网规模经济特点，遵循市场竞争规则，推动自主知识产权技术发展；三，优化市场竞争结构，优化网络资源配置；四，制订和完善相关的准入，业务，资费，监管，频率，建设管理等政策，确保3G发展平稳起步。 对此，知名电信专家，信产部通信科技委委员，北京邮电大学教授宋俊德提出了自己对中国3G的相关看法。[编者按]     

军事电子装备防护技术

军事电子装备的金属腐蚀的防护，散热器件与热敏器件的热防护，电路与元件的湿气防护，以及霉菌防护等，是保证军事电子装备在各种恶劣环境条件下正常使用的必不可少的重要技术，本文综述了钢镀锌，铜或铝镀银，镀金，镀镍，镀铬，镀镉，以及铝合金氧化的防腐蚀情况，涂层的防湿气，防腐蚀，防霉菌防护效果，热防护情况，以及改善防护技术途径与方法。     

新酷家电

立体支架，让人坐下就不想起来的按摩椅，寄予厚望，好梦常在，童话电影院，自己在家做面条，钉书器军刀，安全的无线网络，会转弯的声音，我的移动电视梦，最廉价的法拉利感觉，真正的打机。     

价格战的博弈分析

企业之间竞争加剧，价格战时常发生，从将博弈的角度来分析，通过建立模型，最后可以得出唯一的纯策略纳什均衡解，即降价，当然，在竞争初期，通过价格战，竞争双方大大增加了用户从而提高市场占有率，但同时降低了ARPU，在注重利润的资本市场中，长期下去只会造成两败俱伤，然而，可以通过政府和市场相结合，对企业竞争行为进行规范，从而约束价格战。     

一种改善球形目标RAM优化速度的方法

采用遗传算法设计球形目标雷达吸波材料时，由于适应度函数是以级数形式给出，且随物体尺寸的增大，级数收敛减慢，优化时间成倍增长，为提高设计效率，依物体电尺寸的大小分段使用不同的方法进行优化设计，其次，采用浮点数编码，可以节省计算机内存，简化优化过程，从而大大缩短优化设计的时间，为避免算法陷入局部最优，采用分段变参数遗传算法，提高进化的效率，最后，用Matlab设计算法，通过算例证明方法的快捷、有效。     

白衣秀士明基-西门子EF51

一袭白衫，不带一丝花哨，弹指之间，音乐信手拈来，将小喇叭塞入耳中，与喧闹的都市完全隔离，把思絮沉淀，再沉淀，直到波澜不惊，轻启唇齿，只需说出那个再熟悉不过的号码，让思念之人的话语在耳边响起，一切都那么轻松，那么简单。[编者按]     

小型演播厅灯光,舞美的计算机辅助设计

小型电视台（站）由于人员，经费，设备，场地等限制，演播厅灯光，舞美因不同的演出和栏目需要，需经常调整或重新设计，布置，使用计算机进行辅助设计，可以在机上进行调整，修改，避免与实际操作发生时空交叉，冲突，影响演播厅的正常使用。     

永唱新经济 挽手相伴行

新 经济，新经济……恰似乱花迷人眼，年青人 抱着一夜发财梦，有关人士对以电子信息技术为代表的高新技术，热得发烫的网络经济抱着过度的乐观，认为将永远是从增长走向增长。 天有不测风云，去春科技股开始下落，今年初决然崩溃，加上美国经济明显走缓，网络神话泡沫破灭，信息技术产业陷入低迷，微电子工业今年铁定下降等等，乱云翻滚，阴■沉沉。于是，对新经济怀疑者有之，反对者有之。 这几年，人们说了许许多多的新经济，媒体上刊载了许许多多的新经济文章，其实至今也没有规范出一个明确的定义，仁者见仁，智者见智。大致归结，多数…     

激光治疗复发性口疮疗效观察

本文通过对３２例复发性口疮病人用氦氖激光治疗的观察与分析，由于光热效应改善了营养代谢，使炎性代谢产物排出，达到镇痛，消炎，消肿，粘膜上皮组织修复，上皮细胞再生的目的，从而加速了溃疡面的愈合。提出此方法具有操作简单，无副作用，无痛苦，疗程短，愈合快，病人易接受等优点，值得推广。     

Alternative Schemes for Dynamic Secure VPN Deployment in UMTS

Three alternative schemes for secure Virtual Private Network (VPN) deployment over the Universal Mobile Telecommunication System (UMTS) are proposed and analyzed. The proposed schemes enable a mobile node to voluntarily establish an IPsec-based secure channel to a private network. The alternative schemes differ in the location where the IPsec functionality is placed within the UMTS network architecture (mobile node, access network, and UMTS network border), depending on the employed security model, and whether data in transit are ever in clear-text, or available to be tapped by outsiders. The provided levels of privacy in the deployed VPN schemes, as well as the employed authentication models are examined. An analysis in terms of cost, complexity, and performance overhead that each method imposes to the underlying network architecture, as well as to the mobile devices is presented. The level of system reliability and scalability in granting security services is presented. The VPN management, usability, and trusted relations, as well as their behavior when a mobile user moves are analyzed. The use of special applications that require access to encapsulated data traffic is explored. Finally, an overall comparison of the proposed schemes from the security and operation point of view summarizes their relative performance. Christos Xenakis received his B.Sc. degree in computer science in 1993 and his M.Sc. degree in telecommunication and computer networks in 1996, both from the Department of Informatics and Telecommunications, University of Athens, Greece. In 2004 he received his Ph.D. from the University of Athens (Department of Informatics and Telecommunications). From 1998–2000 was with the Greek telecoms system development firm Teletel S.A., where was involved in the design and development of advanced telecommunications subsystems for ISDN, ATM, GSM, and GPRS. Since 1996 he has been a member of the Communication Networks Laboratory of the University of Athens. He has participated in numerous projects realized in the context of EU Programs (ACTS, ESPRIT, IST). His research interests are in the field of mobile/wireless networks, security and distributed network management. He is the author of over 15 papers in the above areas. Lazaros Merakos received the Diploma in electrical and mechanical engineering from the National Technical University of Athens, Greece, in 1978, and the M.S. and Ph.D. degrees in electrical engineering from the State University of New York, Buffalo, in 1981 and 1984, respectively. From 1983 to 1986, he was on the faculty of Electrical Engineering and Computer Science at the University of Connecticut, Storrs. From 1986 to 1994 he was on the faculty of the Electrical and Computer Engineering Department at Northeastern University, Boston, MA. During the period 1993–1994 he served as Director of the Communications and Digital Processing Research Center at Northeastern University. During the summers of 1990 and 1991, he was a Visiting Scientist at the IBM T. J. Watson Research Center, Yorktown Heights, NY. In 1994, he joined the faculty of the University of Athens, Athens, Greece, where he is presently a Professor in the Department of Informatics and Telecommunications, and Director of the Communication Networks Laboratory (UoA-CNL) and the Networks Operations and Management Center. His research interests are in the design and performance analysis of broadband networks, and wireless/mobile communication systems and services. He has authored more than 150 papers in the above areas. Since 1995, he is leading the research activities of UoA-CNL in the area of mobile communications, in the framework of the Advanced Communication Technologies & Services (ACTS) and Information Society Technologies (IST) programmes funded by the European Union (projects RAINBOW, Magic WAND, WINE, MOBIVAS, POLOS, ANWIRE). He is chairman of the board of the Greek Universities Network, the Greek Schools Network, and member of the board of the Greek Research Network. In 1994, he received the Guanella Award for the Best Paper presented at the International Zurich Seminar on Mobile Communications.     

A Fault-Tolerant Scheme for Mobility Management in PCS Networks

One of the most important and challenging issues in the design of personal communication service (PCS) systems is the management of location information. In this paper, we propose a new fault-tolerant location management scheme, which is based on the cellular quorum system. Due to quorum's salient set property, our scheme can tolerate the failures of one or more location server(s) without adding or changing the hardware of the systems in the two-tier networks. Meanwhile, with a region-based approach, our scheme stores/retrieves the MH location information in the location servers of a quorum set of the local region as much as possible to avoid long delays caused by the possible long-distance of VLR and HLR. Thus, it yields better connection establishment and update delay. Ming-Jeng Yang received the M.S. degree in computer science from the Syracuse University, New York, in 1991, and the Ph.D. degree in computer science from National Taiwan Normal University, Taiwan, in 2004. He is an associate professor in the Department of Information Technology, Takming College, Taiwan. His research interests include wireless networks, mobile computing, fault-tolerant computing, and distributed computing. He is a member of the IEEE Computer Society and the ACM. Yao-Ming Yeh received the B.S. degree in computer engineering from National Chiao-Tung University, Taiwan, in 1981, and the M.S. degree in computer science and information engineering from National Taiwan University, Taiwan, in 1983. In August 1991, he received the Ph.D. degree in the Department of Electrical and Computer Engineering, The Pennsylvania State University, Pa., U.S.A. He is a professor in the Department of Information and Computer Education, National Taiwan Normal University, Taiwan. His research interests include fault-tolerant computing, web and XML computing, and distributed computing.     

RFID相关技术专利分析(三)

RFID技术作为一项重要的非接触式识别枝术,近来发展迅猛。本文对RFID天线相关的技术进行了专利战略分析,主要包括:RFID天线相关整体行业分析、RFID标签天线和制造工艺等三个方面,分析了如下主要指标:申请年度发展趋势、主要申请人地区分布、IPC分布、DWPI分布、主要申请人分布、核心专利排名、专利地图。根据分析结果,本文给出了分析结论,对相关企业在专利利用、保护和管理方面给出了建议与对策。     

SOI Technologies Overview for Low-Power Low-Voltage Radio-Frequency Applications

Thanks to their structure, the SOI technologies present several intrinsic advantages for analog and RF applications. Indeed, as it is well established now, these technologies allow the reduction of the power consumption at a given operating frequency. Moreover, the high-insulating properties of SOI substrates, in particular when high resistivity substrate is used, make that these technologies are perfect candidates for mixed-signal applications. In the present paper, we will discuss the performances of the SOI technologies in radio-frequency range. First of all, the high-frequency behavior of SOI substrates, thanks to the characterization of transmission lines, will be shown. The impact of the SOI substrate resistivity on the performances of passive components will also be analyzed. Then, an overview of RF performances of SOI MOSFETs for two different architectures, fully- and partially-depleted, will be achieved and compared to the bulk ones. Finally, the influence of some specific parasitic effects, such as the kink effect, the self-heating effect and the kink-related excess noise, on the RF performances of SOI devices will be studied, thanks to a specific high-frequency characterization.     

一个具有附益性及保序性算子的形态学非局部拓展

近年，形态学非局部拓展工作在图像处理领域受到众多关注.而附益性算子是经典形态学的最基本形式，也是形态学分析方法最重要的变换工具.为此，一些研究者就形态学非局部拓展中如何保持算子的附益性开展工作.本文从理论及实例两个方面说明，相关拓展工作为保持算子的附益性而丢失了保序性的不足；进一步，通过设计非局部权值的获取过程，并结合现有工作，本文提出了一个新的形态学非局部拓展，并定理证明了所得算子同时具备附益性及保序性两个重要性质；人工合成图像及自然图像上的仿真实验也表明了本文所提算法的有效性.     

企业VPN技术应用实施浅析

随着企业规模逐渐扩大,远程用户、分支机构、合作伙伴也在不断增多,关键业务的需求增加,出现了一种通过公共网络（如Internet）来建立自己的专用网络的技术,这种技术就是虚拟专用网（简称VPN）。本文首先介绍了VPN的概念,对VPN的实现技术进行了分类和适用性分析,然后分析了各种类型的企业在信息安全方面的需求和限制,根据不同企业的特点提出了不同的VPN解决方案,最后,对VPN在集成电路企业中的应用做了简单的拓朴展示。     

HiBRID-SoC: A Multi-Core SoC Architecture for Multimedia Signal Processing

The HiBRID-SoC multi-core system-on-chip architecture targets a wide range of multimedia applications with particularly high processing demands, including general signal processing applications, video de-/encoding, image processing, or a combination of these tasks. For this purpose, the HiBRID-SoC integrates three fully programmable processors cores and various interfaces onto a single chip, all tied to a 64-Bit AMBA AHB bus. The processor cores are individually optimized to the particular computational characteristics of different application fields, complementing each other to deliver high performance levels with high flexibility at reduced system cost. The HiBRID-SoC is fabricated in a 0.18 μm 6LM standard-cell CMOS technology, occupies about 81 mm², and operates at 145 MHz. An MPEG-4 Advanced Simple Profile decoder in full D1 resolution requires about 120 MHz for real-time operation on the HiBRID-SoC, utilizing only two of the three cores. Together with the third core, a custom region-of-interest (ROI) based surveillance application can be built.Hans-Joachim Stolberg received the Dipl.-Ing. degree in electrical engineering from the University of Hannover, Germany, in 1995.From 1995 to 1996, he was with the NEC Information Technology Research Laboratories, Kawasaki, Japan, working on efficient implementations of video compression algorithms. Since 1996, he has been with the Institute of Microelectronic Systems at the University of Hannover as a Research Assistant. During summer 2001, he was a Monbukagakusho Research Fellow at the Tokyo Institute of Technology, Japan. His current research interests include VLSI architectures for video signal processing, performance estimation of multimedia schemes, and profile-guided memory organization for signal processing and multimedia applications.Mladen Bereković received the Dipl.-Ing. degree in electrical engineering from the University of Hannover, Germany, in 1995.Since then he has been a Research Assistant with the Institute of Microelectronic Systems of the University of Hannover. His current research interests include VLSI architectures for video signal processing, MPEG-4, System-on-Chip (SOC) designs, and simultaneously multi-threaded (SMT) processor architectures.Sören Moch received the Dipl.-Ing. degree in electrical engineering from the University of Hannover, Germany, in 1997.Since then he has been Research Assistant with the Laboratory for Information Technology, University of Hannover. His current research interests are in the area of processor architectures for image, video and multimedia signal processing applications.Lars Friebe studied electrical engineering at the Universities Ulm and Hannover, Germany. In 1999, he worked at the NEC System ULSI Research Laboratory in Kanagawa, Japan. He received the Dipl.-Ing. degree in electrical engineering from the University of Hannover, Germany, in 1999.Since then he has been a Research Assistant with the Laboratory for Information Technology, University of Hannover. His current research interests are in the area of parallel programmable VLSI architectures for real-time image processing.Mark B. Kulaczewski started his studies in electrical engineering at the University of Hannover, Germany. In 1994, he transferred to Purdue University, West Lafayette, USA, and received the M.S. degree in electrical engineering in 1996.Since 1997 he has been a Research Assistant at the Laboratory for Information Technology and the Institute of Microelectronic Systems, University of Hannover. His current research interests include programmable real-time architectures for video coding and image segmentation, and instruction-set extensions for cryptographic applications.Sebastian Flügel was born in Crivitz, Germany, in 1975. He received his Dipl.-Ing. degree from the Department of Electrical Engineering of the University of Rostock in 2001.Since then he has been a Ph.D. candidate at the Institute of Microelectronic Systems at the University of Hannover. He works in the field of architectures and systems for video processing systems. His focus is on algorithms for video encoding and the development of optimized hardware architectures.Heiko Klußmann received the Dipl.-Ing. degree in computer engineering from the University of Hannover, Germany, in 2002.Since then he has been a Research Assistant with the Institute of Microelectronic Systems of the University of Hannover. His current research interests are in the area of programmable architectures for real-time video signal processing.Andreas Dehnhardt was born in Frankfurt am Main, Germany, in 1976. He received his Dipl.-Ing. degree in electrical engineering from the University of Hannover, Germany, in 2002.Since then, he has been a Research Assistant with the Institute of Microelectronic Systems, University of Hannover. His current research interests include programmable architectures for multimedia applications and implementation of real-time MPEG-4 encoding schemes.Peter Pirsch received the Ing. grad. degree from the engineering college in Hannover, Hannover, Germany, in 1966, and the Dipl.-Ing. and Dr.-Ing. degrees from the University of Hannover, in 1973 and 1979, respectively, all in electrical engineering.From 1966 to 1973 he was employed by Telefunken, Hannover, working in the Television Department. He became a Research Assistant at the Department of Electrical Engineering, University of Hannover, in 1973, a Senior Engineer in 1978. During 1979 to 1980 and in Summer 1981 he was on leave, working in the Visual Communications Research Department, Bell Laboratories, Holmdel, NJ. During 1983 to 1986 he was Department Head for Digital Signal Processing at the SEL research center, Stuttgart. Since 1987 he is Professor in the Department of Electrical Engineering, since 2002 in the Department of Computer Science at the University of Hannover. He served as Vice President Research of the University of Hannover from 1998 to 2002. His present research includes architectures and VLSI implementations for image processing applications, rapid prototyping and design automation for DSP applications. He is the author or coauthor of more than 200 technical papers. He has edited a book on VLSI Implementations for Image Communications (Elsevier 1993) and is author of the book Architectures for Digital Signal Processing (John Wiley 1998).Pirsch is a member of the IEEE, the German Institute of Information Technology Engineers (ITG) and the German Association of Engineers (VDI). He was recipient of several awards: the NTG paper price award (1982), IEEE Fellow (1997), IEEE Circuits and Systems Golden Jubilee Medal (1999). He was member or chair of several technical program committees of international conferences and organizer of special sessions and preconference courses. He has held several administrative and technical positions with the IEEE Circuits and Systems Society and other professional organizations. Dr. Pirsch currently serves as Vice President Publications of the IEEE Circuits and Systems Society. Since 2000 he is chairman of the Accreditation Commission for Engineering and Informatics of the Accreditation Agency for Study Programs in Engineering, Informatics, Natural Science and Mathematics (ASIIN). Dr. Pirsch is chair of the VDI committee on Engineering Education.     

Statistical distributional approach for scale and rotation invariant color image retrieval using multivariate parametric tests and orthogonality condition

This paper proposes a unified framework for color image retrieval, based on statistical multivariate parametric tests, namely test for equality of covariance matrices, test for equality of mean vectors, and the orthogonality test. The proposed method tests the variation between the query and target images; if it passes the test, then it proceeds to test the spectrum of energy of the two images; otherwise, the test is dropped. If the query and target images pass both the tests then it is concluded that the two images belong to the same class, i.e., both the images are same; otherwise, it is assumed that the images belong to different classes, i.e., both the images are different. The obtained test statistic values are indexed in ascending order and the image corresponds to the least value is identified as same or similar images. Here, either the query image or target image is treated as sample; the other is treated as population. Also, some other features such as Coefficient of Variation, Skewness, Kurtosis, Variance–Covariance, spectrum of energy, and number of shapes in the images are compared between the query and target images color-wise. Furthermore, to emphasize the efficiency of the proposed system, the geometrical structure, viz. test for orthogonality between the query and target images, is examined. In the case of structure images, the number of shapes in the query and target images are compared; if it matches, then the contents in the shapes are compared color-wise. The proposed system is invariant for scaling, and rotation, since the system adjusts itself and treats either the query image or the target image is the sample of other. The proposed framework provides hundred percent accuracy if the query and target images are same, whereas there is a slight variation for similar, scaled, and rotated images.     

On Fixed-Mobile Network Convergence

As the convergence in digital industry takes shape, the digital networks, both wireline and wireless, are also converging to offer seamless services and enhanced experience to the user. With the arrival of the mobile Internet the mobility is also moving into new areas, e.g., imaging, games, video, multimedia, and across different types of networks. In this paper we explore why, what, and how of the network convergence, and identify how the industry viewpoints align and differ. We also identify the key barriers to achieving true network convergence. We then discuss the role of the Internet Protocol (IP) as the common thread that enables network convergence, and the key industry and standards initiatives to actually provide solutions and the equipment to implement a cost-efficient and high performance converged network. Sudhir Dixit joined Nokia Research Center in 1996, where he is currently a Research Fellow and works on next generation wireless networks. From 1996 to 2003 he was a Senior Research Manager, focusing on IP/ATM, wireless, content networks, and optical networks. Prior to that he worked at NYNEX Science & Technology (now Verizon), GTE (now Verizon), Codex Motorola, Wang, Harris, and STL (now Nortel Europe Labs). He has published or presented over 150 papers, published three books, and holds 14 patents. He is on the Editorial Board of the IEEE Communications Magazine, Springer's Wireless Personal Communications Journal, and KIC's Journal of Communications and Networks. He received a B.E. degree from MANIT, Bhopal, India, an M.E. degree from BITS, Pilani, India, a Ph.D. degree from the University of Strathclyde, Glasgow, Scotland, and an M.B.A. degree from Florida Institute of Technology, Melbourne. He is a Fellow of IEE (UK) and IETE (India). He represents Nokia on the Steering Board of the Wireless World Research Forum, and is also Chair of the SIG on Self-Organization of Wireless World Systems.     

IMS实验网的研究与实现

随着各运营单位的重组和3G牌照的发放,各通信网络的融合与完善对IMS网络发展提出了更高的要求。模拟IMS网络,测试IMS网络,完善IMS网络,使得IMS实验网的搭建变得至关重要。本文介绍了IMS网络的基本结构和功能,采用相关研究工具,组建IMS实验网,部署实现包括P-CSCF、I-CSCF、S-CSCF、HSS和AS等功能实体,实现IMS网络的基本的通信,设置AS提供增值服务。经过测试,验证了系统设计的有效性,为用户带来全新体验。