基于构件技术的移动SNS服务端架构

移动SNS平台包含了众多的关键技术,为了有效提高平台模块的复用率、系统灵活性,提出了基于构件技术的移动SNS服务端架构,详细分解了服务端架构功能,给出了移动SNS服务端的构件模型,描述了构件间的层次关系,提出了构件粒度模型,最后给出了移动SNS服务端软件架构,为移动SNS系统服务端设计提供了一个可行的方案。     

基于FPGA乘法器架构的RNS与有符号二进制量转换

RNS(余数数制系统)是一种整数运算系统,在粒度精确性,能源损耗和响应速度上有很大的优势.从RNS到二进制数的输入输出转换是基于余数算法的专用架构实现的关键.本文提出了一个基于N类模的RNS与有符号二进制量的通用转换算法在FPGAs的乘法器上的实现过程.该算法能更有效地进行有符号数与RNS的转换.基于该算法类型乘法器在同类型乘法器中显示出了速度优势.文章中该架构被映射到Altera的10K系列的FPGA上.     

基于 Mealy 机的藏文字构件分解

藏文字构件分解是藏文信息处理的基础,具有重要的理论价值和广阔的应用前景。针对藏文字构件的复杂性与多样性,文章通过分析现代藏文字的构字规则和结构特点,研究了藏文字构件的分解过程,利用Mealy机的输出字符与移动一一对应的特性描述了藏文字构件的行为语义,给出了对于任意字符串能否被Mealy机分解的判定定理及基于Mealy机的藏文字构件分解算法,并设计实现了基于Mealy机的藏文字构件分解系统,验证了算法的可行性。     

基于移动互联网的办公自动化系统设计

移动互联网办公系统是企业信息化办公的发展方向。文中对企业办公自动化系统的需求进行了详细分析。在此基础上,设计了基于移动互联网的企业办公自动化系统,论证了系统的总体架构、软件架构和网络架构,并基于集成开发环境实现了系统。测试结果表明,该系统能够有效实现企业的办公自动化功能,压力测试和鲁棒性测试均达到了企业的实际使用需求。     

基于EDI的联合作战指挥网络构建技术研究

电子数据交换(EDI)在商业和行政业务中发挥过重要作用,传统的EDI实现技术现在不断改革,该文在深入分析EDI系统的基础上,给出一种基于EDI的联合作战指挥网络构建方案,并对其各种功能具体实现进行了探讨。专业网络中引入大量Internet中没有的设备,为今后类似系统的开发提供借鉴。     

基于CDMA网络的移动综合业务处理系统的设计

本文就如何解决办公或销售人员在移动的环境下实现随时随地上传或下载数据的问题,将CDMA移动通信网和Internet网络两者结合起来,提出了基于手机终端的移动综合业务处理系统的架构,介绍了移动综合业务处理系统的主要功能以及关键的技术,最后介绍了移动综合业务处理系统主要模块的设计与实现.     

基于EOS的综合管理信息系统设计与实现

Primeton EOS Platform是采用先进的SOA架构的应用平台,供水分公司基于Primeton EOS平台开发了综合管理信息系统。文章介绍了系统的总体设计和系统从数据建模、业务构件开发、组合构件和装配、UI开发、工作流程开发、单元测试及功能上线的开发实现过程。     

航天测控站数据传输处理系统构件化设计

针对航天测控领域软件复用程度不高、软件开发效率低的现状,设计了基于构件技术的体系及架构。通过分析航天测控站数据传输处理系统领域模型,抽象出其各功能构件,结合软件总线体系结构,设计了基于内存映射的通信机制、连接构件及各功能构件,实现了航天测控站数据传输处理软件系统的构件化实例。这种方法实现了二进制方式的复用,在一定程度上提高了软件的质量,降低了开发维护成本,提高了可靠性。     

一种VGA到TV数字视频转换电路的设计

介绍了VGA到TV视频转换的系统原理与总体架构,阐述了视频转换的色彩空间转换、UV减采样、去闪烁与缩放、副载波调制及数字电视编码等原理,应用减采样与过采样算法实现视频采样率转换。基于此结构,采用0.5μm CMOS工艺实现了一款VGA到TV数字视频转换芯片,芯片集成度15万门,芯片面积为6.67μm×6.35μm,系统时钟为27 MHz。实测结果表明,芯片实现了VGA到NTSC/PAL制电视的转换,适用于多分辨率、多制式视频转换系统。     

基于插件的移动终端应用架构研究

文章针对目前移动应用系统的开发现状,提出了基于插件的灵活而且可扩展的移动终端应用解决方案,分析了该架构的两大组成部分：微内核与插件,阐述了二者的主要功能,为实现规范、统一、高效的移动业务能力平台奠定了基础。     

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.     

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.     

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.