资源池环境下的IT服务管理实施策略

总结了IT服务管理的实施现状,分析了云计算环境下资源池的建设和运营给IT服务管理体系带来的挑战,并从管理要求、流程设计、岗位职责以及监控和资源部署调度等方面提出了IT服务管理调整和优化的实施策略.     

SLA及其在电信服务中的应用

在新的市场竞争形势和市场需求的双重催生下，SLA服务模式应运而生。对客户服务和SLA生命周期中的五个阶段进行了描述。介绍了电信领城SLA产生的背景和SLA管理的概念、内容，给出了SLA的参数框架，并结合SLA的管理需求简单探讨了SLA管理信息模型的建立。     

关于IPTV视频质量监控系统研究

随着国家三网融合政策的不断推进,以IPTV为代表的三网融合业务快速增长。本文针对电信运营商IPTV运维中面临的一些问题对IPTV视频质量监控系统建设的必要性进行了分析,对主流视频监控系统进行了归纳总结。通过建立一套IPTV视频质量监控平台,实现对IPTV网络有效监控和管理,进而提升客户满意度,提高维护管理能力,全面掌握IT支撑能力,降低运营成本,细化量化维护考核指标,为成功实施SLA、IT财务管理、IT服务持续性管理、可用性管理和能力管理提供全面支撑,对网络管理以及运维的资源、性能、配置、故障以及运维流程提供全面支持。     

关于IPTV视频质量监控系统研究

随着国家三网融合政策的不断推进,以IPTV为代表的三网融合业务快速增长。本文针对电信运营商IPTV运维中面临的一些问题对IPTV视频质量监控系统建设的必要性进行了分析,对主流视频监控系统进行了归纳总结。通过建立一套IPTV视频质量监控平台,实现对IPTV网络有效监控和管理,进而提升客户满意度,提高维护管理能力,全面掌握IT支撑能力,降低运营成本,细化量化维护考核指标,为成功实施SLA、IT财务管理、IT服务持续性管理、可用性管理和能力管理提供全面支撑,对网络管理以及运维的资源、性能、配置、故障以及运维流程提供全面支持。     

基于软件开发企业的IT月艮务规划及ITSM系统设计

国内IT企业（特别是软件开发企业）应用ITSM提高服务质量和市场竞争能力,仍然缺乏具有实际参考价值的成功案例。广东中望软件公司通过IT服务规划与实施项目,研究如何在软件开发企业中应用ITSM和ITIL最佳实践,提出了进行IT服务规划与实施的基本方法和应用模式,将IT服务规划的方法概括为PPMT模型,即对流程、组织、管理、工具四个方面进行设计,并将实施IT服务规划的策略概括为“管理分步、功能分期、观念重建、持续改进”,在IT服务管理成熟后,可将其他产品和业务整合到统一的IT服务管理体系中,最终实现“以服务为中心”的运营模式。     

基于ITIL的集中化IT运维管理流程设计与实践

为了适应中国移动IT系统的集中维护的管理方式.为了保证IT系统正常、可靠、高效、安全运行,为业务部门提供优质服务;必须建立有效的集中化的运营服务管理流程.论述了ITIL管理流程在IT系统维护中的应用模式,并对基于ITIL的集中化IT运维管理流程实践进行介绍.     

SLA实现技术及其应用

随着网络服务的内容越来越丰富，用户对服务质量（QoS）的要求也越来越高。为了管理提供QoS保证的电信业务，服务等级协定（SLA）被提出，用来解决用户和服务提供商间有关QoS保证的问题。SLA表示模板、违例处理和指标评价是SLA的3种关键的实现技术。一个典型的SLA管理系统通常包括SLA数据管理、SLA问题管理和SLA管理3个部分。SLA的研究还处于起步阶段。需要进一步规范SLA管理内容。定义通用性和专用性相结合的管理方法，形成统一的工业标准。     

云服务中SLA体系的建立

SLA（服务等级协议）将服务规范化、可度量化,是运营商给用户的服务承诺。对云来说,SLA尤为重要,它关系到用户对运营商的信任度。文章着重描述云数据中心服务中SLA体系的建立方法,包括如何设计和度量SLA指标,如何实施并优化LSLA体系等,希望SLA体系建立完成后能帮助云服务进一步走向成熟。     

业务光网络中光服务等级协定的研究

从业务光网络的角度对比服务等级协定(SLA)定义了光服务等级协定(O-SLA)的框架结构,在此基础上重点分析了O-SLA协商机制并提出一种动态协商的概念,对动态协商机制的实现流程进行了分析研究.随后总结了O-SLA得以有效实施的关键技术,并提出一种支持区分服务的O-SLA实施流程,此流程对于向端用户提供可定制化的光层业务提供了一种新思路.     

网管系统中的服务水平管理

消费者对运营商的选择促使运营商开始对其服务质量进行承诺，导致了服务等级协议(SLA)的产生和发展。在建设新的业务支撑系统时，需要按照SLA管理的思路，在用户业务层、用户网络层、运营商内部业务层、运营商网络层和运营商的其它运营、维护和支撑系统之间建立SLA管理系统。在对已经部署的网管进行改造提供SLA支撑时，需要从服务性能数据收集和分析以及服务故障后服务恢复时间的度量两个方面着手进行。     

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.     

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.     

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.     

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.     

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.     

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.     

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.     

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.     

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.