基于熵权的电子信息系统可信性多层次综合评估法

在可信性概念的基础上,结合电子信息系统的特点给出电子信息系统可信性概念及其形式化描述,建立层次结构的电子信息系统可信性模型及其评估模型;通过分析电子信息系统可信性属性,应用层次分析法的思想,建立电子信息系统可信性的指标体系;综合当前系统评估的主要方法,提出针对电子信息系统可信性特点的评估方法———基于熵权的电子信息系统可信性多层次综合评估法;最后,应用该方法对某电子信息系统的可信性进行了评估,验证了该方法的有效性。     

谈广播电视网络与信息系统安全指标体系的一种建立方法

建立广播电视网络与信息系统安全指标体系,实现综合评价。是保障广播电视系统安全的重要措施。本文通过分析广播电视信息安全保障对象和影响信息安全的主要因素,以及广播电视网络与信息系统安全指标体系的建立原则,提出了一种包括建设指标、运行指标、态势指标广播电视网络与信息系统安全指标体系框架模型,同时也介绍了在安全指标体系中常用的评价方法。     

综合电子信息系统毁伤效果评估方法

为了对综合电子信息系统毁伤效果进行评估,确定了目标毁伤等级划分及判定准则,从综合电子信息系统的功能需求出发,对综合电子信息系统功能层次进行了分解,建立了综合电子信息系统的功能指标体系,在此基础上,借助模糊综合层次分析法思想,提出了一种综合电子信息系统毁伤效果评估方法,并通过实例进行了验证。实例结果表明,该方法能正确给出综合电子信息系统的毁伤等级。     

航空信息系统安全评价指标体系

论文提出了一种基于安全系统工程理论[1]的航空信息系统安全评价指标体系,结合动态控制方法,从战略、技术、管理、工程四个角度评价航空信息系统的安全。首先建立了一个航空信息系统安全评价指标体系,其次采用模糊层次分析法,对系统的静态指标部分进行了安全评估,得到了较好的评估结果。     

网络与信息系统安全性评估及其指标体系的研究

阐述了网络与信息系统安全性评估的意义、概念与原则,提出的信息系统安全性评估指标体系简明、实用可操作性强。对构建网络与信息系统的安全保障体系具有一定的指导意义。     

基于内生安全的云服务平台安全度量指标体系研究

基于各地电子政务信息系统和云服务平台上云迁移工作持续推进,提出内生安全云服务平台系统架构。在此基础上,提出了内生安全云服务平台安全度量指标体系的概念,解决了内生安全信息系统和云服务平台网络安全难以度量的难题。对相应的测试评估方法进行了介绍,为后续测试评估方案的构建提出了可行性方案。     

基于模糊综合和AHP的内联网信息安全风险评估

随着信息化建设步伐的加快,信息安全面临的风险日益增加。为了对信息安全风险进行评估,提出一种基于模糊综合评判和AHP的信息系统安全风险评估方法,分析了系统面临的风险威胁,建立了评估指标体系,通过AHP确定指标权重,对某单位局域网信息系统安全进行了风险评估,确定了风险等级,指出了风险来源,结果表明,该方法能较好地量化评估信息系统安全风险。     

基于云计算的综合电子信息系统

综合电子信息系统是一个比较复杂的系统,主要应用在军事领域,可以有效地提高各个兵种一体化联合作战的能力,在综合电子信息系统中,包含了指挥控制功能、信息传送功能、安全保密功能等。随着科学技术及信息技术的发展,综合电子系统而不断地发展完善,现今,为了更好地在军事领域应用综合电子信息系统,以云计算技术为基础,设计了更为优质的综合电子信息系统。文章在阐述综合电子信息系统的发展及主要特征的基础上,提出了具体的系统设计方案。     

电子信息系统雷电入侵途径及防护措施

信息时代的到来使电子信息系统得到了广泛的普及与应用,一旦遭受雷击将会对电子信息系统造成严重威胁,因此,对雷电入侵电子信息系统的途径及防护措施进行研究具有非常重要的现实意义。本文着重分析了雷电入侵电子信息系统的2种途径,并在此基础上找出合理、有效的防护电子信息系统的方法,以确保该系统的安全稳定运行。     

信息系统安全保障理论与评价指标体系

文章研究了一类四维信息保障（IA）模型，包括IA目标维、IA能力维、IA措施维和IA时间维。重点给出了一个可以测度国家信息保障成熟度的评价指标体系．并给出了各级指标的构成和评价原理。该指标体系包括系统信息保障成熟度指数和基础支撑成熟度指数．适用于对国家信息安全保障体系、基础信息网络和重要信息系统、一般信息系统等的信息安全保障态势进行评价。     

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.