电信运营级虚拟化运营管理技术探析

为了充分发挥虚拟化技术的优势，必须有一个高效统一的运营管理平台，实现对虚拟化产品的全面管理和科学运营。电信运营商拥有大规模的通信网络基础和IT基础设施，在实现虚拟化平台的大规模公众运营上具有得天独厚的优势。文章首先描述了当前虚拟化运营管理的主要产品及其特点，接着从运营商的角度提出了虚拟化运营管理需要具备的主要功能，最后对虚拟化运营管理的实现及发展进行了分析和展望。     

大数据实验云平台的设计与实现

针对目前大数据实践教学的主要问题,在分析了Open Stack平台与其组件Sahara的特点后,采用Open Stack4J API在该平台上设计并开发了基于虚拟化技术的Hadoop集群实验云系统。通过此实验云平台能够实现学生在线快速申请实验、实施和管理实验的目的,同时教师可以通过该平台方便实现实验管理,为大数据教学提供全新的实践教学方式。     

基于云计算的水文数据共享平台的应用研究

水文数据是研究水问题重要的基础信息,是我国重要的基础性科学数据资源之一。研究云计算现有的特点,结合水文数据规模庞大、分布地域广泛等特点,分析开源性云平台Ha-doop中分布式文件系统HDFS、计算模型Map/Reduce、数据仓库Hive技术,设计基于Hadoop的水文云平台,并解决平台实现过程中服务器虚拟化、大规模异构水文数据存储以及元数据管理等关键性问题。最终使得平台具有安全可靠、易维护和良好的可扩展性的特点。     

云计算环境下的服务器虚拟技术研究

大数据时代,海量数据应运而生,数据的处理除了占有大量的存储空间,还会让计算机系统承受较大的负担。虚拟化技术是云计算技术最为核心的技术之一,虚拟化技术的存在促进了云计算向下一代计算模式的演变。服务器虚拟化技术是核心的虚拟化技术也是云计算的基础在这一环境下,模拟完成计算机所有的真实操作,只需要占用很少的硬件资源就会处理大量的数据,且运行损耗也会显著降低。文章结合云计算技术的特点、主流的虚拟化平台及平台使用的概念、原理到应用进行简要的分析,探讨虚拟化与云计算之间的联系及虚拟化在云计算的环境下的应用原理。     

虚拟化网络中的异常大数据区域挖掘平台设计与改进

受异常大数据区域参数波动大的影响,市面上现存的虚拟化网络异常大数据区域挖掘平台可应用性和稳定性不高,与虚拟化网络连接成功率较低。为此,设计新型虚拟化网络异常大数据区域挖掘平台。该平台由虚拟化网络控制模块、挖掘模块和虚拟层组成。虚拟化网络控制模块利用SDN控制器对虚拟化网络进行控制,保证其中的大数据能够被流畅、安全、稳定地挖掘和传输。挖掘模块先对虚拟化网络控制模块传输来的大数据进行整流和滤波,再利用报警电路挖掘出其中的异常大数据,进而搭建出异常大数据区域,并对其进行完整存储。软件给出虚拟层的功能图,以及平台对异常大数据的挖据代码。经实验验证可知,所设计的平台拥有较高的可应用性和稳定性,且与虚拟化网络连接的成功率较高。     

基于云计算的综合应急管理平台体系架构研究

针对当前综合应急管理平台架构的不足,提出一种基于云计算的综合应急管理平台设计方法,并重点阐述了通用数据、本地共用数据和实时数据的虚拟化存储技术、平台服务层微内核群技术和平台的集成管理与系统可搭建技术,采用设计出的综合应急管理软件平台可以满足多种用户类型、专业化、低成本、定制服务等应用需要。     

基于SAN的分布式卷管理架构及实现

随着SAN存储量的增长,提出了存储虚拟化的管理技术来解决存储管理、异步平台的数据共享、存储系统的可用性和可扩展性等方面的要求。文章主要探讨了存储虚拟化的分类,给出了一个基于SAN的分布式卷管理架构,该架构将操作系统中纵向虚拟存储管理概念扩展到不同磁盘、磁盘阵列的横向虚拟化管理,并在此架构下实现了分布式快照系统,该系统解决了海量数据备份时的I/O带宽问题。原型系统分析表明,新架构可以较好地解决分布式卷管理的问题,在实施数据迁移和数据拷贝时,实现海量数据瞬间完成与瞬间恢复。     

基于云计算的虚拟化数据中心(上)

阐述了云计算如何实现资源虚拟化、如何管理虚拟资源和如何使用云计算平台部署虚拟化数据中心等VDC建设中的关键问题,针对VDC的数据安全、网络安全、虚拟机安全等方面提出了部署建议,提出了云计算的接口标准、设备标准和安全管理规范的内容,并给出了应用被攻击后的响应策略.     

试析VMware vSphere虚拟化技术的运用

互联网技术的发展与普及,推动了大数据技术和云存储技术的发展.对于数据的分析处理水平和网络运维的安全性成为各大运营商研究的焦点.VMware vSphere平台对于互联网大数据分析和软硬件管理水平表现出较大的优势.本文浅析了VMware vSphere虚拟化技术的特点,结合基于VMware vSphere平台技术的运用原则,提出了VMware vSphere虚拟化技术运用方向.     

基于虚拟化平台的校园网建设研讨

分析当前校园网络业务需求、现状和特点,结合当前信息系统发展的“云计算”和“虚拟化”趋势,讨论了校园网络进行虚拟化平台建设的必要性,提出了基于虚拟化平台校园网络建设的建设目标和初步方案,总结了虚拟化平台校园网络建设给校园信息系统带来了信息服务支撑能力的提升。     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

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.