中国政治思想史上德刑关系及其价值探究

德刑关系是中国历史上政治生活的重要议题之一, 论及德刑关系的政治思想甚多。按历史时期可分为三个阶段:德刑思想的产生阶段———百家争鸣时期, 儒家和法家分别对施行德治和“法治”的辩论;德刑思想的发展变化阶段———秦至汉初时期, 秦政推行“法治”, 汉初的思想发展变化为德治唤起生机;逐德刑思想的渐成型阶段———汉唐时期, 确立了“德主刑辅”的主调。传统的德刑关系理论有其特殊的社会和文化背景, 呈现出道德法律化、“德主刑辅”正统化的特点, 具有丰富的现实价值和历史延续性, 对现代法律的制订具有启发意义, 有助于正确认识法律和道德的关系, 更好地实现依法治国和以德治国的统一。     

竺可桢的科普思想及实践

竺可桢是20世纪中国地理学和气象学的一代宗师,作为一名科学家,在我国气象学界和地理学界做出了卓越的贡献。同时他还是身体力行的科普作家,一生写了大量的科普作品,对科普有深刻的理解。他生前发表过的科普文章、所作科普讲演和报告的讲稿,以及未曾发表过的有关手稿和油印稿有160篇之多。内容更是涉及气象学、地理学以及科学思想、科学方法、科学教育、科学家和科学史等众多领域,许多作品堪称中国科普作品的经典之作。另外他还曾经领导中国科普事业。学习和探讨他的科普思想和科普实践对我国现在的科普工作具有重要的借鉴意义。     

Peculiarities of the Properties of III–V Semiconductors in a Multigrain Structure

The systematized results of studies of the properties of InAs, InSb, and GaAs semiconductors in a multigrain structure based on measurement and analysis of the current–voltage and spectral characteristics are presented. It is established that electron emission and injection are determined by the localization effects of states in the bulk and surface region of submicron grains. The phenomena of current limitation and lowfield emission characteristic of quantum dots are revealed and studied. The results can be used in studies and in the development of multigrain structures for gas and optical sensors, detectors, and emitters of infrared and terahertz ranges.     

Mechanical Sensitivity Enhancement of an Area-Changed Capacitive Accelerometer by Optimization of the Device Geometry

A study of the enhancement of the mechanical sensitivity of an area-changed capacitive accelerometer by optimization of the device geometry is presented. The movable mass of the accelerometer was designed with many fingers connected in parallel and suspended over the stationary electrodes composed of differential comb fingers by means of mechanical beams anchored onto the substrate. The maximum displacement possible based on the chosen design structure was determined. From this displacement value the spring constant was calculated, and based on this spring constant value various combinations of the beam length and width were selected. The lengths and the widths were then varied and simulated using the Coventorware 2001.3 software. This was done as theoretical analysis showed that the mechanical beam dimensions are significantly more dominant in the overall device sensitivity. The displacement and spring constant variations with the beam dimensions at an applied acceleration was observed and analyzed. The same process was done for the number of fingers, length and thickness of each finger. Each of these was done in isolation based on the optimum geometry of the mechanical beams and tested to ensure that alterations of these aspects do not have a significant effect on the overall sensitivity. The modal and harmonic analysis were also simulated and observed to ensure the linearity and the stability of the dominant mode of the operation of the device. Optimum results of the device geometry are presented and discussed, along with suggested next steps.Badariah Bais received the B.S. and M.S. degrees from the Worcester Polytechnic Institute, Worcester, MA, in 1990 and 1992, respectively. Since 1997, she has been serving at the Department of Electrical, Electronics and Systems Engineering at Universiti Kebangsaan Malaysia as a teaching staff. She is currently pursuing her Ph.D. in Microelectronics at the Institute of Microengineering and Nanoelectronics (IMEN) at Universiti Kebangsaan Malaysia. Her research interests include MEMS sensors and microfabrication. She is a member of the Institute of Electrical and Electronics Engineer (IEEE).Burhanuddin Yeop Majlis received his Ph.D. in Microelectronics from University of Durham, UK in 1988, MSc. in Microelectronics from University of Wales, UK in 1980 and BSc. (Hons.) in Physics from Universiti Kebangsaan Malaysia in 1979. Now he is the director of Institute of Microengineering and Nanoelectronics (IMEN). He is a senior member of the Institute of Electrical and Electronics Engineer (IEEE) and the Chairman of IEEE Electron Devices Malaysia Chapter since 1994. He is also a member of Malaysian Solid State Science and Technology (MSSS). He has published three text books in electronics and one book on Integrated Circuits Fabrication Technology for undergraduate courses and more than 110 academic research papers. His current interest are MEMS sensor for automotive and RF applications.     

百年电子学--纪念真空电子管发明一百周年

电子学的崛起、发展和广泛应用是20世纪最伟大的科学技术领域之一.在电磁波理论和自由电子发展的基础上,1904年出现了第一只真空二极电子管,一般认为这标志着电子学的诞生.电磁波频谱资源的开发和利用是电子学发展的基础和动力.从电磁频谱统一的观点看,光已经象微波一样进入到电子学的领域,成为无线电电子学中不可分割的组成部分.电子学的基本任务是:研究带电粒子流与电磁场相互作用的物理概念和物理过程,以及利用相互作用的不同物理机制实现粒子与场之间能量有效转化的方法和条件.从电子器件的观点看,电子学可分为真空电子学与固态电子学;而从电子运动规律的观点看,现代电子学将处理自由电子,准自由电子和束缚电子的运动规律及其与电磁场的相互作用.1958年,电子学领域出现三个重要发现和发明:集成电路、激光和相对论自由电子的回旋辐射.相应的,半导体电子学(微电子学)、激光电子学和相对论电子学等现代电子学领域则发端于此.电子器件小型化、微型化、功能集成化将电磁频谱的开拓和占领推向光波和红外毫米波.     

3D堆叠技术及TSV技术

介绍了3D堆叠技术及其发展现状,探讨了W2W(Wafer to wafer)及D2W(Die to wafer)等3D堆叠方案的优缺点,并重点讨论了垂直互连的穿透硅通孔TSV(Through silicon via)互连工艺的关键技术,探讨了先通孔、中通孔及后通孔的工艺流程及特点,介绍了TSV的市场前景和发展路线图。3D堆叠技术及TSV技术已经成为微电子领域研究的热点,是微电子技术及MEMS技术未来发展的必然趋势,也是实现混合集成微系统的关键技术之一。     

米酵菌酸对小鼠肝和心肌细胞毒性作用的超微结构研究

目的：观察米酵菌酸对小鼠肝、心肌细胞毒性作用的超微结构改变，探讨米酵菌酸中毒的机理，方法：小鼠腹腔注射不同剂量的米酵菌酸，2h后取其肝和心肌组织，通过电镜观察其细胞超微结构的改变，结果：电镜下可见肝细胞和心肌细胞的线粒肿胀，内嵴断裂，模糊或消失，基质局部或全部空亮，呈囊泡样变，偶见其中含髓样小体，上述线粒体内嵴和膜结构的病变随米酵菌酸剂量的增加而加重，结论：米酵菌酸对小鼠肝、心肌细胞毒性作用以线粒体的损伤较为突出，因此我们认为，线粒体内膜的破坏造成线粒体的功能障碍，影响细胞呼吸，使细胞缺氧导致小鼠中毒死亡。     

8 GHz 1V, CMOS quadrature downconverter for wireless applications

The design and implementation of an 8 GHz CMOS quadrature downconverter, achieving simultaneously low voltage supply operation and good linearity is presented in this paper. This is achieved by relaxing the inherent tradeoff between power conversion gain and linearity governing all active mixers and implementing a mixer using a new version of the bias-offset technique. The quadrature generator uses active inductors embodied in the LO buffer, and provides easy tuning by relaxing the coupling between amplitude and phase tuning of the outputs. It also provides reduced power consumption by eliminating the buffers located between the quadrature generator and the mixers. A prototype implemented in a 0.18 μm CMOS technology occupies an area of 0.44 × 0.3 mm², operates from a 1V power supply and features an IIP3 of +3.5 dBm, an IIP2 of better than +48 dBm, an input compression point of −5.5 dBm, a power conversion gain of +6.5 dB for the mixers and a quadrature phase and amplitude matching of better than 1.5° and 1 dB respectively over a bandwidth of 100 MHz after tuning. The overall power consumption of the quadrature downconverter is 25.8 mW. Farsheed Mahmoudi was born in Tehran, Iran. He received his B.Sc. and M.Sc. degrees in Electronics from the University of Tehran, Tehran, Iran in 1997 and 2000 respectively. He is currently working toward the Ph.D. degree at the University of Toronto, Toronto, Canada. His research interests include the design and analysis of RF circuits and systems for wireless applications. C. Andre T. Salama received the B.A.Sc. (Hons.) M.A.Sc. and Ph. D. degrees, all in Electrical Engineering, from the University of British Columbia in 1961, 1962 and 1966 respectively. From 1962 to 1963 he served as a Research Assistant at the University of California, Berkeley. From 1966 to 1967 he was employed at Bell Northern Research, Ottawa, as a Member of Scientific Staff working in the area of integrated circuit design. Since 1967 he has been on the staff of the Department of Electrical and Computer Engineering, University of Toronto where he held the J.M. Ham Chair in Microelectronics from 1987 to 1997. In 1992, he was appointed to his present position of University Professor for scholarly achievements and preeminence in the field of microelectronics. In 1989–90, he was awarded the ITAC/NSERC Research Fellowship in information technology. In 1994, he was awarded the Canada Council I.W. Killam Memorial Prize in Engineering for outstanding career contributions to the field of microelectronics. In 2000, he received the IEEE Millenium Medal. In 2003, he received the Outstanding Lifetime Achievement Award from the Canadian Semiconductor Technology Conference for seminal and outstanding contributions to semiconductor device research and promotion of Canadian University research in microelectronics. In 2004, he received the NSERC Lifetime Achievement Award of Research Excellence for outstanding and sustained contributions to the field of microelectronics and the Networks of Centres of Excellence (NCE) Recognition Award for research excellence and outstanding leadership. He was associate editor of the IEEE Transactions on Circuits and Systems in 1986–88 and a member of the International Electron Devices Meeting (IEDM) Technical Program Committee in 1980–82, 1987–89 and 1996–98. He was the chair of the Solid State Devices Subcommittee for IEDM in 1998 and was a member of the editorial board of Solid State Electronics from 1984 to 2002. He is presently a member of the editorial board of the Analog IC and Signal Processing Journal and the Technical Program Committee of the International Symposium on Power Semiconductor Devices and ICs (ISPSD) and the Technical Program Committee of the International Symposium on Low Power Electronics and Design (ISLPED). He chaired the technical program committee of ISPSD in 1996 and was the general chair for the conference in 1999. Dr. Salama is the Scientific Director of Micronet, a network of centres of excellence focussing on microelectronics research and funded by the Canadian Government and Industry. He has published extensively in technical journals, is the holder of eleven patents and has served as a consultant to the semiconductor industry in Canada and the U.S. His research interests include the design and fabrication of semiconductor devices and integrated circuits with emphasis on deep submicron devices as well as circuits and systems for high speed, low power signal processing applications. Dr. Salama is a Fellow of the Institute of Electrical and Electronics Engineers, a Fellow of the Royal Society of Canada, a Fellow of the Canadian Academy of Engineering, a member of the Association of Professional Engineers of Ontario, the Electrochemical Society and the Innovation Management Association of Canada.     

Designing an Embedded Video Processing Camera Using a 16-bit Microprocessor for a Surveillance System

This paper describes the design and implementation of a hybrid intelligent surveillance system that consists of an embedded system and a personal computer (PC)-based system. The embedded system performs some of the image processing tasks and sends the processed data to the PC. The PC tracks persons and recognizes two-person interactions by using a grayscale side view image sequence captured by a stationary camera. Based on our previous research, we explored the optimum division of tasks between the embedded system and the PC, simulated the embedded system using dataflow models in Ptolemy, and prototyped the embedded system in real-time hardware and software using a 16-bit CISC microprocessor. This embedded system processes one 320 × 240 frame in 89 ms, which yields one-third of the rate of 30 Hz video system. In addition, the real-time embedded system prototype uses 5.7 K bytes of program memory, 854 K bytes of internal data memory and 2 M bytes external DRAM. Koichi Sato is a Ph.D. student in the Department of Electrical and Computer Engineering at The University of Texas at Austin. He earned his B.S. in University of Tokyo, Japan in 1993. He worked for Automotive Development Center in Mitsubishi Electric Corporation where he was involved in lane and automobile recognition in vehicle video processing products such as automatic cruise control and drowsiness detection systems. He enrolled in the current University at 1998 and received an M.S in 2000. In his Master's thesis he worked on human tracking and human interaction recognition. His current work includes velocity extraction using the TSV transform, object tracking, and 3D object reconstruction. Brian L. Evans is a tenured Associate Professor in the Department of Electrical and Computer Engineering at The University of Texas at Austin. His research and teaching efforts are in embedded real-time signal and image processing systems. In signal processing, his research group is focused on the design and real-time software implementation of ADSL and VDSL transceivers, for high-speed Internet access. In image processing, his group is focused on the design and real-time software implementation of high-quality halftoning for desktop printers, smart image acquisition for digital still cameras, and 3-D sonar imaging systems. In signal and image processing, Dr. Evans has published over 100 refereed conference and journal papers. Dr. Evans is the primary architect of the Signals and Systems Pack for Mathematica, which has been on the market since October 1995. He was a key contributor to UC Berkeley's Ptolemy Classic electronic design automation environment for embedded systems, which has been successfully commercialized by Agilent and Cadence. His BSEECS (1987) degree is from the Rose-Hulman Institute of Technology, and his MSEE (1988) and PhDEE (1993) degrees are from the Georgia Institute of Technology. From 1993 to 1996, he was a post-doctoral researcher in the Ptolemy project at UC Berkeley. He is a member of the Design and Implementation of Signal Processing Systems Technical Committee of the IEEE Signal Processing Society, and a Senior Member of the IEEE. He is the recipient of a 1997 National Science Foundation CAREER Award. J.K. Aggarwal has served on the faculty of The University of Texas at Austin College of Engineering since 1964 and is currently Cullen Professor of Electrical and Computer Engineering and Director of the Computer and Vision Research Center. His research interests include computer vision and pattern recognition focusing on human motion. A Fellow of IEEE since 1976 and IAPR since 1998, he received the Senior Research Award of the American Society of Engineering Education in 1992, the 1996 Technical Achievement Award of the IEEE Computer Society and the graduate teaching award at The University of Texas at Austin in 1992. He has served as Chairman of the IEEE Computer Society Technical Committee on Pattern Analysis and Machine Intelligence (1987--1989); Director of the NATO Advanced Research Workshop on Multisensor Fusion for Computer Vision, Grenoble, France (1989); Chairman of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition (1993), and President of the International Association for Pattern Recognition (1992--1994). He is a Life Fellow of IEEE and Golden Core member of IEEE Computer Society. He has authored and edited a number of books, chapters, proceedings of conferences, and papers.     

Is `power to the people' going underground?

The subjects of R&D and manufacturing technologies presently at hand to advance the widespread acceptance of underground transmission were among the concerns of a recent five-day Engineering Foundation conference at New England College, Henniker, N.H. The seminar was cosponsored by a committee of the Electrical Research Council, the Department of the Interior, and the Construction Research Committee of the ASCE (in cooperation with the Insulated Conductors Committee of the IEEE). Lester H. Fink of the Philadelphia Electric Company and T. W. Mermel of the Bureau of Reclamation, Department of the Interior, were the cochairmen. More than 100 representatives from electric utilities, electric equipment manufacturers and suppliers, and government agencies attended the week-long symposium. The parallel purpose of the conference was to stimulate the development and evaluation of innovative and practical techniques that could contribute meaningfully to the progress and optimization of both the present and future technology in high-voltage buried lines. Areas of research to reduce the cost of installing underground transmission were identified, and there were exchanges of ideas and concepts toward achieving this goal.     

Service Composition for Mobile Environments

Service Composition, that is, the development of customized services by discovering, integrating and executing existing services has received a lot of attention in the last couple of years with respect to wired-infrastructure or Internet web services. With the advancement in the wireless technology and rapid deployment of mobile devices, we envision that in the near future wirelessly connected mobile devices in a given vicinity will also provide services that can be leveraged in the composition process. This is particularly true of what have been described as “pervasive computing” environments. However, wired-infrastructure based service composition architectures are not designed to consider the various factors like mobility, device heterogeneity, resource variability and reliability in a mobile environment. In this paper, we describe the issues related to service composition in mobile environments and evaluate criteria for judging protocols that enable such composition. We present a distributed architecture and associated protocols for service composition in mobile environments that take into consideration mobility, dynamic changing service topology and device resources. The composition protocols are based on distributed brokerage mechanisms and utilize a distributed service discovery process over ad-hoc network connectivity. We present simulation results of our protocols, and compare them with a centralized service composition protocol traditionally used for wired-infrastructure environments. The results show that our approach clearly outperforms the existing centralized approaches, and that our protocols are able to adapt and better utilize the changing service topology and resources in a mobile environment.This work is supported in part by NSF awards 9875433 and 0070802, DARPA DAML program and IBM. Dipanjan Chakraborty is a Ph.D candidate and a research member of ebiquity research group at University of Maryland, Baltimore County (UMBC). His reserach is in the areas of mobile and pervasive computing environments, mobile and e-commerce, peer-to-peer systems with special interests in the fields of service discovery, information aggregation and composition, ad-hoc network application-centric routing, agent-based systems. He specializes in the development and modeling of distributed architectures to enable mobile and pervasive commerce in ubiquitous environments. His thesis is in the area of service discovery and composition for pervasive environments. He has been a fellow of IBM during the 3 years of his Ph.D candidacy. Anupam Joshi is an Associate Professor of Computer Science and Electrical Engineering at UMBC. Earlier, he was an Assistant Professor in the CECS department at the University of Missouri, Columbia. He obtained a B. Tech degree in Electrical Engineering from IIT Delhi in 1989, and a Masters and Ph.D. in Computer Science from Purdue University in 1991 and 1993 respectively. His research interests are in the broad area of networked computing and intelligent systems. His primary focus has been on data management for mobile computing systems in general, and most recently on data management and security in pervasive computing and sensor environments. He has created agent based middleware to support discovery, composition, and secure access of services/data over both infrastructure based (e.g. 802.11, cellular) and ad-hoc wireless networks (e.g. Bluetooth). He is also interested in Semantic Web and Data/Web Mining, where he has worked on personalizing the web space using a combination of agents and soft computing. His other interests include networked HPCC. He has published over 50 technical papers, and has obtained research support from NSF, NASA, DARPA, DoD, IBM, AetherSystens, HP, AT&T and Intel. He has presented tutorials in conferences, served as guest editor for special issues for IEEE Personal Comm., Comm. ACM etc., and served as an Associate Editor of IEEE Transactions of Fuzzy Systems from 99-03. At UMBC, Joshi teaches courses in Operating Systems, Mobile Computing, Networking, and Web Mining. He is a member of IEEE, IEEE-CS, and ACM. Tim Finin is a Professor in the Department of Computer Science and Electrical Engineering at the University of Maryland Baltimore County (UMBC). He has over 30 years of experience in the applications of Artificial Intelligence to problems in information systems, intelligent interfaces and robotics and is currently working on the theory and applications of intelligent software agents, the semantic web, and mobile computing. He holds degrees from MIT and the University of Illinois. Prior to joining the UMBC, he held positions at Unisys, the University of Pennsylvania, and the MIT AI Laboratory. Finin is the author of over 180 refereed publications and has received research grants and contracts from a variety of sources. He has been the past program chair or general chair of several major conferences. He is a former AAAI councilor and is a member of the the board of directors of the Computing Research Association. Yelena Yesha received the B.Sc. degree in Computer Science from York University, Toronto, Canada in 1984, and the M.Sc. and Ph.D degrees in Computer and Information Science from The Ohio State University in 1986 and 1989, respectively. Since 1989 she has been with the Department of Computer Science and Electrical Engineering at the University of Maryland Baltimore County, where she is presently a Verizon Professor. In addition, from December, 1994 through August, 1999 Dr. Yesha served as the Director of the Center of Excellence in Space Data and Information Sciences at NASA. Her research interests are in the areas of distributed databases, distributed systems, mobile computing, digital libraries, electronic commerce, and trusted information systems. She published 8 books and over 100 refereed articles in these areas. Dr. Yesha was a program chair and general co-chair of the ACM International Conference on Information and Knowledge Management and a member of the program committees of many prestigious conferences. She is a member of the editorial board of the Very Large Databases Journal, and the IEEE Transaction on Knowledge and Data Engineering, and is editor-in-chief of the International Journal of Digital Libraries. During 1994, Dr. Yesha was the Director of the Center for Applied Information Technology at the National Institute of Standards and Technology. Dr. Yesha is a senior member of IEEE, and a member of the ACM.This revised version was published online in August 2005 with a corrected cover date.     

A GaAs monolithic low-noise broad-band amplifier

Describes the design, fabrication, and performance of GaAs monolithic low-noise broad-band amplifiers intended for broadcast receiver antenna amplifier, IF amplifier, and instrumentation applications. The process technology includes the use of Czochralski-grown semiinsulating substrates, localized implantation of ohmic and FET channel regions, and silicon nitride for passivation and MIM capacitors. The amplifiers employ shunt feedback to obtain input matching and flat broad-band response. One amplifier provides a gain of 24 dB, bandwidth of 930 Mhz, and noise figure of 5.0 dB. A second amplifier provides a gain of 17 dB, bandwidth of 1400 MHz, and noise figure of 5.6 dB. Input and output VSWR's are typically less than 2:1 and the third-order intercept points are 28 and 32 dB, respectively. Improved noise figure and intercept point can be achieved by the use of external RF chokes.     

计算机体系结构的层次设计:来自易经模型的视角

易经是中华民族的宝贵文化遗产，它包含上古时期人们对自然宇宙和人生社会的思想认识、哲学理念和辩证法，代表了先民哲学地认识宇宙模型的思维成果.从易经模型方法来观察计算机体系结构层次设计，对层阴阳性质的分类可以带来层次设计的深化，可以认识层次设计的本质，为层次设计带来模型体系和学说理念.我们建立了层次对立统一和刚柔相应学说，给出了体系结构层次设计的模型和评价，并且可以促进层次部件之间的协调发展.本文论述了经卦分层连接关系和六爻的层次模型与理念学说，拓展了易经层次模型的发展演化，透过SDN网络层次模型和云计算层次模型的例子阐明了层次设计的模型方法和演化推理.最后，进行了总结，并对下一步的研究进行了简单展望.     

植物园

植物园（含树木园）以科学研究、保护、展示和教育为目的,收集保存活植物并保有其档案记录。其主要任务是迁地保护植物多样性、实现其资源的可持续利用,开展相应的植物展示、科普教育和科学研究。全世界现有约2 000个各种类型的植物园和树木园,保存了80 000种植物,包括许多珍稀、濒危的植物种类。中国的植物园目前已达约160个,在植物引种、驯化、开发利用、保护方面取得了巨大成绩,在科普教育、旅游服务方面的重要性得到承认。植物园工作者在相关研究领域取得了理论和技术的创新成果,在管理、政策、培训和植物记录系统计算机化方面也在和世界接轨。面临生物多样性保护与可持续发展的挑战和机遇,我们期待中国的植物园在建园、植物收集保存、科普旅游、能力建设、科学研究等领域取得更大成绩,更好地满足经济和社会发展、环境和资源保护利用的需求,与世界植物园同步前进。     

基于数据库的专家系统

专家系统缺乏高效的搜索、管理和利用知识库的能力，严重地影响了专家系统的效率，使得大型专家系统难以实现。数据库系统缺乏推理能力，不能处理知识，阻碍了其进一步应用与发展。专家系统与数据库结合可以扬长避短，具有很大的研究与应用价值，并能带来显著的经济效益。本文介绍了一种专家系统与数据库相结合的思想及其实现方法。     

能信协同超材料理论及关键技术

能信协同超材料(Collaborative Power and Information Metamaterials, CPIM)是将电磁超材料与无线能量传输(Wireless Power Transfer, WPT)、无线能量收集(Wireless Energy Harvesting, WEH)和无线信息传输(Wireless Information Transfer, WIT)有机融合的前沿领域,旨在实现能量与信息的高效协同传输和控制。CPIM器件凭借其灵活调控电磁波的能力和低成本、低能耗、低重量的优点可以有效解决大量低功耗设备的供能问题,同时保证高质量的通信传输。将能量与信息的多重功能融合于可操控的超材料器件中,以实现更紧凑、高效的能信协同传输效应。针对CPIM的工作基本原理和广泛实用性的应用场景,文章围绕WPT、WEH、WIT三大核心部分进行深入讨论和分析,并阐述了CPIM器件的工作原理和设计方法。最后给出了CPIM在未来的潜在研究和应用方向。文章旨在为研究人员提供基于超材料的能信协同传输技术的趋势和应用分析,推动无线通信和能源系统向更高效、智能化的方向发展。     

基于AT89S52与TC35i实现的短信息处理系统

本系统采用嵌入式技术,由单片机AT89S52最小系统与TC35i模块实现GSM基带处理、GSM射频的传输与控制。本文着重阐述短信息接收与发送及终端数据处理的信息流程。短信息接收与发送单元主要由单片机系统对GSM模块实施信息交互控制,终端处理单元完成收、发信息的数据融合与处理。实现单片机控制GSM模块与移动台(手机)信息流的查询与控制,即由单片机控制手机的SMS(Short Message Service)的收发。     

地海交界分区域复合粗糙面的布儒斯特效应研究

通过随机粗糙面建模理论, 研究地海交界分区域复合粗糙面的布儒斯特效应.采用蒙特卡罗方法, 利用高斯谱函数模拟陆地粗糙面, 利用Pierson-Moskowitz(PM)海洋谱模拟海面部分, 运用加权反正切函数滤波处理以平滑交界, 构建了地海交界分区域复合粗糙面的几何模型.考虑到粗糙陆地表面与海面各自内部面元的耦合作用以及区域之间和交界处面元的相互耦合, 提出了一种基于地海交界分区域面元的迭代物理光学法, 快速求解地海交界分区域复合粗糙面的镜向散射, 分别就陆地粗糙面的均方根高度、相关长度, 海面的风速、风向对其布儒斯特效应的影响进行了分析, 发现了地海交界分区域复合粗糙面上的“布儒斯特融合效应”, 并发现陆地粗糙面的均方根高度与海面风速能够显著影响布儒斯特角的“融合”现象.本研究为探测地海交界区域的真实环境提供了理论基础, 数值仿真结果对抗多径干扰、雷达目标的探测与识别、遥感信息处理具有借鉴意义.     

玻璃基板上激光微细熔覆直写电阻技术的研究

介绍了玻璃基板上激光微细熔覆柔性直写电阻的基本原理及其工艺．系统地研究了各工艺参数的变化对电阻阻值的影响规律。通过热作用、激光与物质的相互作用原理理论分析了电阻膜的形成以及组织、结构、性能间的关系．确立了制备电阻的最佳工艺参数和获得高精度、小误差电阻阻值测试的最佳方法。结果表明．采用该技术可以在无掩膜下通过调节电阻的形状、大小、体积以及激光加工参数．一步完成所需高精度、高质量、高性能电阻元件的制备和修复．不需要电阻的微调，工艺简单、灵活、速度快、成本低．具有广阔的应用前景。     

一种移动中继拨测系统的设计

设计一种中继拨测系统,模拟MSC交换机、短信SP等设备,通过七号信令与低级信令转接点连接,并与长途汇接局开通直达电路,在核心网上对业务测试和监测,真实地反映网络的质量情况和业务性能,测试表明,该系统加强了业务测试的自动化和规范化,提高了发现和处理问题的能力。从而从提高网络运行性能、改善服务质量、降低成本等多方面为网络运营商创造价值,提高其整体经济效益。