全球激光显示技术专利分布格局与态势分析

由于具有色域覆盖率大、色饱和度高和低功耗等特点,激光显示技术被认为是最具有发展前景的显示技术之一。通过检索欧洲专利局世界范围专利数据库、美国专利商标局专利数据库和中国国家知识产权局专利数据库,对2001～2010年公开的5 898件激光显示相关专利进行了数据挖掘,研究了激光显示技术的发展概况,将其按照技术和竞争两个方面进行了统计分析,全面揭示了世界激光显示领域技术的分布格局与发展态势。     

Computer networking in the People's Republic of China: a tripreport

The authors were part of an eighteen-member international delegation of data communications professionals that recently visited the People's Republic of China. This report on computer networking in China is based on their visits to four universities and 11 government organizations in four different cities. They discuss computer systems, telecommunications systems, and data communication in China     

Robust adaptive beamforming for broadband arrays

It is very important in many applications to preserve a desired signal without distortion. This paper presents a robust adaptive beamforming method to extract a desired signal from the signals received by broadband arrays. The proposed method relaxes the requirement of approximate knowledge of the desired direction and the sensor gains and delays (phases). Also the method enhances the desired signal based on a focusing transform for that signal, requires less computation than the taped-delay-line beamforming method, and provides good results even in a multipath environment. Computer simulations are given to support the proposed method.On leave from the Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.Nanjing 210016, People's Republic of China.     

无绳电话射频场感应传导骚扰抗扰度测试

文章主要介绍了通信行业标准YD 1103-2001《无绳电话的电磁兼容性要求及测试方法》中无绳电话信号线和电源线端口的射频场感应传导骚扰抗扰测试的测试目的、测试方法及在测试中对受试设备的监测和性能判据，分析了测试中常见的问题及产生问题的原因和具体的解决方法。     

Simple unified algorithm for estimating and tracking location of desired talker by microphone arrays

In this paper, we discuss a unified approach and its simple algorithm for estimating and tracking the location of the desired talker in the far field and the near field by microphone arrays. The approach is unified for the far field and the near field and can enhance the effective power of the talker's signal. The simple algorithm further avoids singular-value decomposition (SVD) computations and is suitable for real-time processing. Computer simulations and experiments using actual array data support the techniques.Financial support from National Science and Technology Board of Singapore.On leave from the Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.     

张海涛同志在ICTC2009上的讲话

各位来宾、同志们： 金秋时节,丹桂飘香,一年一度的国际传输与覆盖研讨会（ICTC2009）在美丽的古城杭州召开了。我代表国家广电总局,对研讨会的举办表示热烈祝贺．向获得科技杰出贡献奖的同志们表示热烈祝贺．     

依法科学管理频谱资源 共同维护空中电波秩序 全面推动我国工业化和信息化深度融合发展——纪念《中华人民共和国无线电管理条例》颁布十八周年

1993年9月,国务院、中央军委颁布了《中华人民共和国无线电管理条例》（以下简称《条例》）,诞生了我国首部无线电管理法规。在过去的十八年里,《条例》的实施推动我国无线电事业实现了跨越式发展,并为促进经济社会发展、服务国防建设、维护社会稳定作出了重要贡献。2011年,我国踏上了＂十二五＂的新征程,无线电管理工作肩负的使命和任务也更加艰巨。在《条例》颁布十八周年之际,回顾我国无线电管理走向法制化的历史,对于进一步科学管理频谱资源,维护空中电波秩序,开创无线电管理的新局面具有十分重要的意义。     

Binary sequences derived from ML-sequences over rings I: Periods and minimal polynomials

We derive pseudorandom binary sequences from maximal length sequences over the integral residue rings. We prove that these derived binary sequences have guaranteed large periods, and we also obtain upper bounds on their minimal polynomials in the sense of the partial order defined by divisibility. This research was supported by SERC Grant GR/F 72727. The author is on leave from the Department of Mathematics, Graduate School, Academia Sinica, 3908 Beijing, People's Republic of China.     

手机、无绳电话机、普通电话机的环境标志认证

中华人民共和国环境保护部颁发的《环境标志产品技术要求电话》,对手机、无绳电话机、普通电话机的环境标志认证提出技术要求,将于2011年4月1日起施行。本文主要对手机、无绳电话机和普通电话的环境标志认证背景以及环境标志认证的要求、流程、有效期等信息进行了介绍。     

Fast prime factor decomposition algorithms for a family of discrete trigonometric transforms

This paper develops a set of fast prime factor decomposition algorithms (PFDAs) for a family of discrete trigonometric transforms of sizeN, whereN is a product of two relatively prime integers. Relevant equations for the PFDAs are derived. Computational procedures are presented followed by a specific example forN= 12. The input and output index mappings necessary for the algorithm are obtained and the computational complexity is briefly outlined.This research was supported by NSERC.Visiting scholar on leave of absence from Department of Radio and Electronics, Anhui University, Anhui, People's Republic of China.     

Sensor location calibration for bearing estimation

New calibration methods are presented for bearing estimation with sensor location uncertainties, which are based on eigenvalue decomposition of the sample covariance matrix and three or more nondisjoint sources in known bearings. The methods can be applied to arbitrary arrays, including linear arrays, require fewer computations, and are suitable for low signal-to-noise ratio (SNR) cases. Computer simulations are given to illustrate the performance of the proposed methods.Supported by National Science and Technology Board of Singapore.On leave from the Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.     

National Responses and Accessibility to STAR TV in Asia

STAR TV, the first commercial pan-Asia television service, commands huge potential as a communication network. Four ideal types are proposed to capture the variations in national policy responses to STAR TV: namely, (a) virtual suppression, as represented by Singapore and Malaysia; (b) regulated openness, as represented by Hong Kong and the Philippines; (c) illegal openness, as represented by Taiwan and India; and (d) suppressive openness, as represented by the People's Republic of China. A model of accessibility to satellite television, exemplified by STAR TV, is also suggested. The factors taken into account by the model include national regulation, competition from terrestrial television, technological innovation, linguistic barriers, cultural gaps, and national affluence, as well as the programming policy and financing of the satellite television service itself.     

Direction finding of coherent sources with nonlinear arrays

This paper presents an approach to estimate the directions-of-arrival (DOAs) of narrowband coherent (completely corrected) signals by an arbitrary geometry sensor array. The concept of focussing matrices is introduced to estimate the outputs of a virtual uniform linear array from the outputs of the real array in order to use spatial smoothing techniques. Unlike the work presented in [5], the proposed approach avoids multiple singular value decomposition (SVD) computations in the various sectors because it is not necessary to divide the field of view of the array into sectors. Simulation results are given to support the approach.On leave from the Department of Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.     

China may draw a sharply lower line on mobile phone radiation

The People's Republic may impose the world's toughest mode phone radiation standard. The tighter limits could require erecting additional phone towers and reengineering entire lines of handsets. So, with the help of US and European Union authorities, manufacturers are trying to persuade China to harmonize its standards with these of the International Commission on Non-Ionizing Radiation Protection, (ICNIRP). China's draft standard would limit radiation passed from handset to user to a specific absorption rate of 1 W/kg. That is half the 2 W/kg ICNIRP limit adopted by most European nations for any 10 grams of contiguous tissue and significantly,. lower than the US standard of 1.6 W/kg for any 1 gram of contiguous tissue.     

North Korea's nuclear revelation puts spotlight on China

When North Korea admitted in mid-October that it had been actively developing nuclear weapons, in violation of international agreements, it put several big diplomatic players in awkward positions: the United States, because it wanted to keep the focus on Iraq; Japan, which was eager to keep improving relations with the Koreas; but most of all China, nominally an ally of North Korea, but with plenty of good reasons to be unhappy with the prospect of its erratic neighbor's acquiring weapons of mass destruction. On the surface, relations between Asia's two Communist countries still seemed cozy at the time the United States confronted North Korea with intelligence on the latter's clandestine nuclear program. But in fact, the fast-industrializing People's Republic has had less and less in common with its mostly pre-modern neighbor. So it is perhaps no wonder that China seized on Pyongyang's surprise admission as an opportunity to improve its relationship with the United States.     

雾灵鼻通的制备及临床疗效观察

目的 :研究制定雾灵鼻通制备工艺及质量控制方法 ,并观察其临床治疗变应性鼻炎近期疗效。方法 :采用药典所载方法分别测定盐酸麻黄碱和硫酸庆大霉素的含量 ,将患者随机分为雾灵鼻通治疗组 (4 0例 )及盐酸麻黄碱滴鼻液对照组 (4 0例 )。结果 :治疗组显效率与总有效率均高于对照组 ,(P <0 .0 5 )。结论 :我院自制雾灵鼻通制备工艺合理 ,性质稳定 ,疗效可靠。     

我国台湾地区集成电路工业发展特点分析

集成电路(IC)工业和电脑工业是台湾两个最大的高技术工业。电脑工业的发展大大促进了IC工业的成长,特别是近两年以来,发展尤为迅速,岛内IC(消耗)总市场增长率高达20～37％,比国际高出十多个百分点。1992年IC市场预计可突破千亿元大关,达1128亿新台币(NT),超过韩国、香港、新加坡和马来西亚,位居群龙之首,从而引起国际同行的广泛重视。本研究拟从全球对比角度,分析台湾IC工业规划、技术水平、工业增长和劳动生产率等发展状况,并在此基础上从政府、企业科研、生产和国际合作等几个方面讨论台湾IC工业发展特色及其存在的问题。本文取材来源为ERSO/ITRI,ICE,Dataquest和电子科技情报所等报告。     

有关构建政务信息系统密码应用管理体系的建议

随着《中华人民共和国密码法》的出台,我国对密码应用从顶层做出了战略部署和高度要求。各政务部门在开展密码应用工作过程中,普遍存在密码管理职能分工不明确的问题。为研究解决此问题,梳理汇总当前国家法律法规和标准规范明确的密码政策要求,分析政务密码体系架构,总结电子政务典型密码应用,围绕业务应用部门、安全管理部门、认证服务方、密码管理部门四个角色,提出一套基于需求分析、设施建设、电子认证、密码管理和监督的政务密码应用管理体系。     

Diode-pumped Nd: YAG/LBO CW yellow laser at 588.9 nm

Inrecentyears,diode pumpedall solid statelasersin blue[1],green[2]andred[3]spectralreginsofintracavity frequencydoublingweredeveloped,becauseoftheirpromisingadvantages,suchasdesignsimplicity,highef ficiency,structurecompactness.Inmedicine,opticaltes ting,andcolordisplaytechnology[4],laserradiationfrom 550nmto650nmisrequired.Inparticular,theyellow laserat588.9nmradiationisveryclosetotheSodium D2atwavelength589nm,thereforeitwillbecomeani dealsourceinsteadofSodiumlamp.Atpresent,thesol id state…     

合规与实战推动密码产业发展

密码作为网络空间安全的核心支撑技术,也是信创体系的重要组成部分。从需求侧看,《中华人民共和国密码法》的出台推动商用密码迎来黄金发展期,而密码合规与实战并举的政策导向,更能激发密码市场蓬勃发展。从供给侧看,高质量密码供给不足造成密码技术推广普及滞后,市场呼唤创新驱动的高质量密码供给,让密码能用、好用、用好,面向丰富的应用场景构建实战化的密码防护体系。从产业生态看,需要积极弥补信息技术生态方面商用密码的覆盖盲区和短板,抓住信创带来的历史契机,拓宽密码商业化市场,做大做强密码应用生态。