信息共享机制下现代图书馆电子信息服务系统

本文以新时期图书馆信息化建设背景下的信息服务系统为研究内容,在传统图书馆服务功能的基础上,以差异化读者的阅读需求为导向,打造可实现信息共享的多功能图书馆电子信息服务系统,如跨平台资源检索、资源调配、远程维护等。图书馆电子信息服务系统设计将改变传统阅读习惯,打破图书馆之间在资源上的“孤岛”状态,使图书馆相关典藏资源利用率得到最大限度的提升。     

科学 公正 服务 权威

山东省电子产品监督检验的／中国赛宝（山东）实验室／山东赛宝电子信息监督检测研究院隶属山东省信息产业厅，业务主管部门为山东省质量技术监督局，是专职从事电子信息产品质量监督检验机构，经过三十多年的发展已成为我国电子信息行业领域产品质量检查，     

京津冀高校图书馆科技创新信息资源共享模式研究

高校图书馆在不断朝着网络化和信息化的方向进步和发展,信息资源共享模式逐渐得到更多的重视和应用。京津冀协同发展战略已成为国家级战略,为了能够更好地实现京津冀地区科技创新信息资源的流动和配置,并依托京津冀地区现有的各类高校图书馆信息资源,以此来提高京津冀地区信息资源的协同共享,文章就此地区高校图书馆科技创新信息资源协同共享模式的发展背景、合作方式、内容以及完善对策等进行了全面的分析。     

图书馆电子信息资源采购研究

我国高校传统的图书馆就是纸质建设,随着信息化的加速,高校图书馆建设也开始重视电子资源的引进。电子信息资源的采购不同于纸质的藏书,其采购的整个过程比较复杂,现阶段深入研究怎样采购电子信息资源对高校图书馆建设具有至关重要的意义。文章主要就图书馆电子信息资源采购问题进行探讨。     

高校复合图书馆数字化技术的发展

从高校复合图书馆数字化和FRBR、MARC技术,论述了文献信息资源和电子信息资源的组织中各种整合应用模式,提出了未来语义数字图书馆、MARC XML、元数据三种模式。     

网络环境下高校图书馆企业信息服务平台的构建

随着信息化技术的发展,如何面对企业信息需求已成为高校图书馆研究的课题。文章论述了高校图书馆为企业信息服务的优势,企业信息服务的内容,探讨了由企业竞争情报检索平台、网上参考咨询平台、文献传递服务平台、信息资源共享平台构成的企业信息服务平台的构建。     

电子信息的安全存储和有效利用研究

当前,科学技术获得了突飞猛进的发展,更新换代速度日益加快,在人们的工作和生活各个领域中,信息科技都有了广泛的应用,但是在当前时期,电子信息是主要的表现形式。电子信息是十分重要的信息载体,其发展态势十分迅猛,甚至到了人们之间相互交流的境界,更多关注人们的自身利益。所以,电子信息的安全存储和有效利用已成为一个重要话题。笔者在此结合自己多年实践经验,就电子信息的有效利用和安全存储进行分析,以期更好的提高电子信息的利用水平和质量。     

为发展现代电子信息产业培养复合型人才

1现代电子信息产业发展与人才需求材料、能量和信息是全球三项基本资源，人类社会的发展也经历了物质型经济－能源型经济－信息型经济这样三个阶段。20世纪中叶，人类社会开始进入信息社会，从而信息资源成为最重要的战略资源。信息社会的主要特征是以开发、利用信息资源作为生产力的基本标志，信息量呈指数增长的趋势。据有关资料统计，人类的科学知识，19世纪每50年增加1倍；20世纪中叶每10年增加1倍；进入80年代以后则每3－5年增加1倍。科学杂志在1800年为100种左右；1850年为1000种；1900年10000种；1950年已达到10万种；到1995年全球科…     

电子信息产业的发展新趋势与科学发展规律

电子信息产业已成为我国的第一大产业,是国家经济支柱产业,它已深入到经济发展的各个层面,随着电子信息技术产业的发展,它必将带领其他产业跨越式前进。为了更好的推进我国信息产业企业向着正确的方向发展,明确当前信息产业的发展趋势和规律显得十分重要和必要。本文在分析阐述了我国当前电子信息产业的现状和发展趋势之后,总结了电子信息产业的科学发展规律,并对我国电子信息技术产业的发展指明了道路。     

云桌面虚拟模式下图书馆电子信息纠错系统设计

针对传统图书馆电子信息纠错系统存在纠错管理成本较高、纠错效率较慢等问题,提出并设计了一种新的云桌面虚拟模式下图书馆电子信息纠错系统。该系统用户在云桌面模块中下达纠错指令传输至错误信息挖掘模块,其通过数据挖掘引擎,挖掘图书馆电子信息错误数据挖掘库中的错误信息,并传输至电子信息纠错模块进行纠错。通过用户登录、数据选取、信息编辑、信息审核、纠错五步骤,实现图书馆电子信息纠错功能,提升图书馆电子信息质量,增强用户体验度。实验结果表明,所设计系统使用成本、纠错复杂度均低于同类系统,使用价值高。     

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.