高校实验室计算机病毒防范措施研究

在计算机技术飞速发展的背景下,我国多数高校纷纷加强了数字化图书馆的建设。而高校实验室计算机作为高校数字化图书馆建设中一部分,其发挥的作用十分显著。相应地,高校实验室计算机的安全问题也引起管理者的关注。本文从当前高校实验室计算机常见的网络安全问题出发,总结了具有代表性的安全问题;在此基础上提出高校实验室计算机病毒威胁的应对措施与办法,这对提高高校实验室的安全防范,保证其稳定良好的运行,有着重要的现实意义。     

高校计算机实验室安全管理探讨

高校计算机实验室安全管理是实验室建设的重要组成部分,也是计算机系统正常运行的必要条件和保障。从高校机房特点、环境管理、硬件设备管理、软件系统及数据管理、计算机病毒防治等方面入手,论述了高校计算机实验实安全管理的对象、内容、原则、措施及管理机制。     

计算机实验室安全管理策略分析

本文探讨了当下高校计算机实验室的安全管理现状,分析了安全管理对于计算机实验室的重要性,阐述了安全管理在计算机实验室中应构建云桌面系统、加强网络安全管理、优化实验室管理制度等策略。     

桌面云技术在高校计算机实验室中的应用研究

随着教育信息技术的快速发展,高校计算机实验室的日常管理和运维面临着越来越多的挑战。传统的计算机实验室存在的诸多问题逐渐暴露,难以应对增加的挑战。桌面云技术作为一种新兴的技术和服务模式,应用于高校计算机实验室,将会对教学科研活动的正常开展起到非常大的改善作用。文章对传统高校计算机实验室存在的问题进行分析,结合文献对桌面云的架构方式、优势及劣势进行探究,分析桌面云技术在高校计算机实验室中的应用方案,希望通过实现桌面云技术统一管理,改善实验室环境,加速高校信息化进程发展。     

高校实验室计算机网络故障诊断技术研究

近年来,随着社会经济的快速发展,在很大程度上带动了计算机技术、互联网技术的发展,并使计算机技术、互联网技术被广泛应用在高校教学领域。特别是在实验室当中,计算机已成为不可或缺的主要组成部分。即便计算机的应用优势突出,但是在具体使用期间仍易出现网络故障问题,从而阻碍实验的顺利进行。因此,文章以高校实验室计算机网络常见故障问题为切入点,提出具体的诊断技术的同时,研究了高校实验室计算机网络故障的安全运行防范管理措施,旨在全面提高高校实验室计算机网络故障诊断的效率及质量,并降低故障发生率。     

高校计算机实验室网络安全问题刍议

伴随着计算机技术的发展和进步,高校计算机实验室承载了重要的监督和管理职能,为了有效提升高校实验室网络管理水平,就要积极建立健全系统化的监督管控结构,发挥技术优势的同时,为高校计算机网络安全监督水平的全面优化奠定坚实基础。文章对高校计算机实验室网络安全技术进行了集中分析,并着重阐释了高校计算机实验室网络安全维护措施,以供参考。     

防毒卡在计算机实验室机器狗病毒防范的应用

高校计算机实验室的管理是一个重要的研究内容。本文从高校实验室计算机常见的保护卡失效问题出发,诠释了机器狗病毒的危害以及保护卡对其失效的原因;在此基础上提出了蓝心防毒卡在机器狗病毒防范上的应用,对高校实验室计算机的文件系统管理有着现实的指导意义。     

浅谈云计算在高校计算机实验室的应用

高校计算机实验室是日常教学和以计算机为载体的各种考试、培训的重要场所,其信息化程度和管理问题对高校应用型人才培养有着举足轻重的作用。文章首先分析了计算机实验室现状,指出传统计算机实验室存在的问题,接着介绍了云计算的定义和特点,最后阐述了将云计算技术应用于高校计算机实验室的优点。     

高校计算机开放实验室安全的研究思路构架

本文以高校计算机为主题，探讨开放实验室安全的研究思路构架问题。首先结合该实验室的实际情况，对其进行了简要概述，主要从开放计算机实验室安全的三个方面，即设备、操作系统与网络安全展开具体讨论。希望通过本文初步分析，可以引起更多的交流与关注，同时，希望可以为该方面的理论研究工作、安全管理实践工作等提供一些有价值的信息，以供参考。     

浅析高校实验室安全用电问题与对策

实验室在高校中扮演着越来越重要的角色,如何保证实验室安全稳定运行,已成为高校教学环节中的重要问题。本文从实验室整体布线、切断保护、保护接地及静电防止四个方面归纳总结了高校实验室安全用电方面存在的问题,并提出了相应对策。     

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.