市级政务云计算中心建设探讨

为解决政务IT硬件资源重复投资、建设和资源率低的问题,结合地市实际IT硬件资源需求,有针对性建立了政务云“3个1”总体技术架构,构建了1个政务云计算平台、1个政务云监管平台和1个云保障中心的技术架构,对架构中基础配套设施、云资源、云管理、云网络、云安全、云监管及云运维等7个组件进行了深入探讨,提供了安全、跨平台的市级政务云中心建设的整体解决方案。     

林草云数据中心的设计与实现

随着林业信息化建设的发展,智慧林业建设需要大规模的硬件资源支撑其业务需求,通过构建国家林草云公共服务平台,实现林草信息化资源深度的融合,研究了林草云数据中心的物理架构、逻辑架构和功能架构设计,通过研究林草云数据中心平台的收益,为进一步推进云计算在部委级应用提供了示范案例,为快速提升全国林草信息化水平,促进全国林草与现代信息服务业的深度融合提供重要参考。     

基于Hadoop云存储架构的教育资源管理优化技术研究

为了解决现有教育资源管理技术存在吞吐量差、存储效率低等缺陷,设计Hadoop云存储架构对教育资源管理技术进行优化。采用Hadoop云存储架构对教育资源进行管理,得到教育资源云结构;在此基础上,采用云计算技术构建教育资源数据中心,以教育数据中心为基础,以Hadoop云存储架构为平台对教育资源进行上传与下载,实现了教育资源的管理与优化。仿真实验结果表明,与现有的教育资源管理技术相比较,提出的教育资源管理优化技术极大地提升了教育资源的吞吐量与存储效率,充分说明提出的教育资源管理优化技术具备更好的性能。     

新奥特公司

BIRTV主题报告会新奥特阐述基于视频云计算的全媒体运营技术新架构8月23日,新奥特在BIRTV2011主题报告会上作了题为《基于视频云计算的全媒体运营技术新架构》的报告。报告全面阐述了新奥特全新发布的C-MAP基于视频云计算的全媒体运营技术架构,提出了采用统一数据中心,智能构建经营管理云平台、生产制播云平台、集成分发云平台和运营发布云平台等四大核心云平台。基于云计算理念与技术构建的C-MAP技术架构,采用统一数据中心,在传统数据中心可信、可控、可靠、安全的基础上,增加     

基于OpenStack的高职院校云数据中心研究与实现

文章提出设计一种基于OpenStack的高职院校云数据中心,分析建设该云数据中心的目标,立足建设OpenStack架构,包括校级统一标准数据共享体系建设内容和私有云数据中心建设,通过基础设施层、云平台层、管理层和应用层。有效提升了云数据中心的系统可用性,结合VPC技术能够实时隔离共享信息,增强了系统管理应用安全灵活性,也方便主机资源的进一步拓展和后期维护。     

省级教育网数据云平台的构建及实施

从电信运营商角度出发,结合运营商前期数据中心建设思路,提出一种基于云计算、虚拟化技术的省级教育网数据云平台架构,首先结合业务需求分析及云计算、虚拟化关键技术,明确平台定位目的及思路,然后给出一种省级教育数据云平台功能架构,进而对平台的网络组织架构进行论证、描述;同时对中心平台的搭建思路和方案进行对比和分析,所涉及的省级教育网数据云平台对于运营商教育系统相关应用的建设具有借鉴和指导意义.     

云数据中心及云平台技术应用研究

云化的数据中心是虚拟化、自动化、并行计算、安全策略以及能源管理等新技术的融合,是支撑运营商业务的关键基础设施。广电网络运营商之间、以及广电网与互联网实现互联互通,开展视频内容运营,云数据中心将发挥重要作用。本文研究云数据中心的关键技术以及其发展趋势,梳理国内外主要IT设备提供商的数据中心技术架构和解决方案,从而形成广电建设云数据中心及云平台的技术思路,为有线电视网络运营商云平台业务提供参考依据。     

基于云原生架构的高校数字化教学事务平台设计与研究

随着云计算技术的不断发展,云原生应用已经逐渐成为软件开发领域一种主流的应用形式。高等院校在数字化建设过程中需要将分散的软件和硬件资源进行整合,文章提出了一种针对高等院校教学事务的云原生平台设计方案,命名为CNP-Edu,平台能够高效地部署开源云原生应用,为开发新的云原生应用提供软件支持。CNPEdu平台结构简单,易于维护,安全性高,便于扩展,为高校的云原生应用部署和管理提供了架构支撑。     

基于容器技术的PaaS云平台方案

随着互联网业务发展及IaaS云资源池技术的成熟,IT支撑系统也在尝试PaaS云的建设及应用.分析了IT系统如何考虑技术演进,搭建PaaS云平台架构,实现系统资源的统一管理、监控、共享和调度,实现应用的统一部署和多数据中心的高可应用性.     

关于分布式云数据中心架构及管理关键技术研究

对于当前的云计算程序,其最主要的功能是对单个云数据中心问题进行解决,而对于多个云数据之间的资源共享以及统一的管理等问题,我国当前的云计算程序对其还无法进行解决。为了有效解决我国的云数据中心问题,逐渐开始进行分布式云数据中心系统的建设,并对该数据中心的相关管理服务等的关键技术进行有效的分析。同传统的数据中心模式不同,分布式云数据中心采用的是一种全新的架构和管理模式,其架构采用的是扁平式的构成,且对数据中心的资源进行统一的管理,通过这种模式能够对不同地域和不同阶段的单体云数据资源进行共享,实现资源的统一管理,使云数据能够提供更加高效和可靠的服务。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks