面向租户的虚拟机定制化组网技术

基于OpenStack 设计并实现了一个面向租户的虚拟机定制化组网系统,通过资源的元数据定义和基于模板的协同操作,实现云基础设施（计算、存储和网络资源）的自动化部署和管控。具体功能包括统一的图形化租户可拖拽操作、定制化的虚拟机组网编排、动态批量的资源配置更新、网络接口粒度上的服务质量控制以及基于虚拟机网络连接关系的优化映射算法等。该系统可以为租户提供网络配置能力,使租户可以方便、快捷而不受制于技术细节地进行虚拟机组网;性能上降低了网络平均时延,实现了资源的高效匹配,提高了资源利用率。     

基于云平台的多媒体教学系统研究与设计

随着多媒体技术的发展,多媒体内容数据量越来越大,在需要大存储空间的同时,又要求实现针对终端用户的内容可检索、内容可定制,以满足不同用户群体的特性诉求。而基于校园网的传统多媒体教学系统既不能灵活的扩容和部署新的应用,也不支持用户的检索定制要求,更为重要的是,传统的多媒体教学系统很难实现资源的统一管理。针对这些问题,本文提出了一种基于云平台的多媒体教学系统,既实现了海量媒体内容存储和高性能的多媒体内容处理,又提供了面向用户的检索定制能力,实现了资源统一管理。     

面向云化EPC的mobile CDN融合架构研究

基于现有移动CDN和核心网云化研究基础,探讨在云化的EPC资源上部署CDN节点的实现方法.首先分析了移动CDN节点在LTE核心网的部署方案以及核心网云化方案,进而探讨并构建了基于云化EPC资源的移动CDN融合网络架构,利用虚拟化技术实现MCDN服务节点资源共享和系统扩展,提高LTE核心网和CDN系统的可靠性和效率.     

全媒体制播云平台支撑下演播室直播的流程化管理及应用特色

辽宁广播电视集团（台）近期完成了基于云计算为核心技术的全媒体制播云平台,演播室播服、播控、收录系统是该制播云平台Paa S层建设项目中的一部分。本文详细介绍了演播室直播节目如何通过制播云平台实现直播节目文件化播出和收录的全流程,以及播服、播控、收录系统操作软件的定制化管理和应用特色。     

整机柜定制化服务器应用实践研究

整机柜定制化服务器在机柜层面统一了服务器的硬件设计方案,具有更高的集成度和更低的平均能耗。因此,介绍整机柜定制化服务器的发展应用现状,通过某资源池工程的安装部署情况,分析整机柜定制化服务器相对于传统服务器的优点及部署应用时存在的问题,最后结合工程实践提出了后续部署优化建议。     

下一代电信IT架构演进初探：业务功能虚拟化（BFV）

随着信息和通信技术的发展,灵活多变的业务需求给传统大型电信业务支撑系统带来了诸多挑战。应用场景化、服务标准化、技术组件化和资源共享化正在成为电信业务支撑系统架构演进的共识。提出了一种电信业务功能虚拟化（business function virtualization,BFV）架构,以云原生、微服务、容器、Dev Ops等技术为基础,引入标准化的IT虚拟网元、单元化的设计编排器、微服务管理框架和多平面弹性计算控制器,使IT系统具备单元化部署和分布式云部署能力,满足系统稳定扩展与平滑演进的要求,实现IT系统轻量交付和业务敏捷支撑,可作为下一代电信业务支撑系统的参考架构。     

面向5G专网的轻量化核心网技术研究

5G专网可以为不同行业提供定制化和差异化的解决方案,其中核心网在5G专网中发挥着至关重要的作用,是全接入和全业务的使能中心.介绍了面向专网的5G轻量化核心网部署方案及其特点,提出5G轻量化核心网在系统业务流程上的优化思路和网络功能增强方面的定制化开发建议,为后续5G专网架构设计、网络演进和部署提供参考.     

无线云网络智能化研究与展望

随着5G赋能垂直行业进程加快，多样化、差异化的业务及行业场景对网络性能及部署带来了更高的要求，包括灵活性、定制性、快速更新迭代等，无线网络云化以及智能化成为产业关注和探索的方向。介绍了无线网络云化以及智能化的背景、网络架构，分析了标准、产业现状及其带来的问题挑战，总结了适用的场景。同时，面向网络负载均衡，搭建试验环境进行了智能化辅助网络切换的验证。最后，面向下一代6G移动网络，探讨了无线云网络逐渐迈向边缘智能算网的发展方向。     

电视制播云平台导入导出网络系统的设计与实现

辽宁广播电视集团（台）导入导出网络系统使用集群式架构、嵌入式流程、定制化传输策略、统一化管理的方式,服务于全媒体制播云平台制作网、新播出网和AVID高端制作网,具有部署集中、传输效率高、资源共享、管理统一等优点。本文详细介绍了导入导出网络系统的设计思路、设计亮点和实现方法。     

关于企业数据备份云化的部署和应用

文章主要是中国联通内蒙古分公司针对网络中重要数据的安全保障采用了创新性的措施和手段,通过激发网络资源潜能、在大数据迅猛发展的浪潮下,利用"云计算技术",搭建"云数据"平台系统,开发部署数据备份的云化能力,实现了企业数据备份云化的部署和应用。     

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.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

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.