基于主成分分析的目标热红外伪装效果评价研究

为解决目标热红外伪装效果评价主观性强、量化分析不全面等问题,综合提取了温度、纹理、形状及统计4类一级指标,并细分提取10个二级指标,建立评价指标体系。针对多属性决策问题权重难以客观确定的缺陷,运用PCA对评价指标进行主成分分析,降维处理后选取影响热红外伪装效果的主成分因子,计算综合分值并排序。利用该算法对在不同时间和背景下的坦克模型热红外伪装效果进行评价,结果表明该算法对目标热红外伪装效果评价行之有效,可为指挥员判别热红外伪装方案优劣提供决策参考。     

基于蝙蝠算法的模糊综合评价的英语教学质量评价研究

针对模糊综合评价法权重分配缺乏理论基础和完全凭经验的缺点,提出一种基于蝙蝠算法(Bat Algorithm,BA)的模糊综合评价模型。通过BA优化模糊综合评价法的权重,实现权重的最优化选择。运用模糊评价矩阵构建确定各个评价指标权重的判断矩阵,运用BA算法对判断矩阵的权重进行自适应选择。研究结果表明,BA优化模糊综合评价法的结果更加符合实际情况,效果较好。     

试析现代教育技术对提升教师基本素质的作用

近年来,伴随着现代教育技术信息化的不断加快和提速,特别是对于教学教育技术的发展具有较为重要的作用,现代教育技术目前已经发展成为学校教师职业生涯所必须具有的主要素质和基本能力。坚持理论与实践相结合的原则,通过针对以往和当前我国部分学校现任教师,采取现代教育技术等诸多应用技能和能力的深入分析,综合阐述诸多专家学者的重要关于现代教育技术对于教师提升素质基本能力和作用的重要情况和研究结果,针对当前学校教师素质的发展现状,采取现代教育技术的灵活运用,更新能力评价标准,进一步探寻培训教育模式建设框架。     

基于模糊一致矩阵的模糊综合评价法测评隐性知识存量——实证分析高职教师隐性知识存量测评

隐性知识存量测评是对当前学校考核评估教师教科研能力仅测评教师显性知识的完善。文章基于模糊一致矩阵的模糊综合评价法,研究教师隐性知识存量测评,包括：教师的隐性知识分类、建立评价问题指标体系,运用模糊一致矩阵配置指标权重、选择评价相关集、建立模糊综合评价模型,以及测评隐性知识存量,并实证分析高职教师隐性知识存量的测评过程。     

基于PCA和ICA的人脸识别

提出利用主成分分析(PCA)和独立成分分析(ICA)相结合的方法对人脸进行识别。首先对预处理后的图像进行降维,即利用PCA算法对图像进行去二阶相关和降维处理,然后再利用ICA算法获得人脸影像独立基成分,利用人脸影像独立基来构造一子空间,最后利用待识别图像在这个空间上的投影系数进行人脸识别。从两个不同的数据集,将传统的PCA人脸识别算法和提出的人脸识别算法进行比较。从实验数据结果看,提出的PCA和ICA结合人脸识别算法优于传统的PCA人脸识别算法。     

一种基于分块个体子空间的人脸识别方法

针对传统PCA算法的局限性,本文提出了一种基于个体子空间和分块特征提取的人脸识别方法。该方法不同于传统的PCA算法,它为每一个体人脸对象建立一个该个体对象所独有的人脸子空间,并且运用分块特征提取,加强了对样本局部特征信息的提取。在识别过程中,将待测人脸图像对不同个体人脸子空间进行投影后,再运用最近距离分类原则进行分类识别。该方法相对于传统的PCA算法能够更好地描述不同个体人脸之间的差异性,克服各类噪声。本文的实验结果表明,该方法的识别率相对于传统PCA特征脸算法具有一定的提高,能够较好地克服光照、表情和姿态变化的影响。     

电气工程及其自动化专业毕业设计研究

毕业设计是学生在大学期间的最后学习阶段，运用所学知识和能力独立进行的一次综合训练。毕业设计环节的教学质量与学校对毕业设计的规定和组织、学生素质和态度、教师水平与指导情况以及毕业设计环境等多种因素相关。本文主要分析了电气工程及其自动化专业的毕业设计课题分布，学校、教师、就业单位和学生对毕业设计的要求和希望。指出了毕业设计中的一些问题并提出了相应的解决方向。     

基于小波PCA与BP神经网络的人脸识别算法

特征提取和分类器设计是人脸识别算法中的两个关键问题。提出一种基于二次小波变换、PCA算法与BP神经网络的人脸识别算法。该算法采用二次小波变换与PCA相结合的算法提取人脸图像的主要特征,并运用加入动量项的改进BP神经网络算法进行人脸图像分类识别。在MATLAB环境下,利用ORL人脸图像数据库进行了仿真实验,实验结果表明,该算法实现简单、识别速度快、识别率较高。     

浅谈RBF神经网络在教师绩效评价中的应用

本文从建立教师绩效评价的意义入手,提出了教师绩效评价标准,探讨并构建了适应于教师绩效评价的指标体系。在比较各种评价模型和算法优缺点的基础上,提出了基于径向基（RBF）神经网络的教师绩效考评价模型,并设计出了系列数据处理算法。通过网络训练、泛化结果分析,表明用RBF神经网络来评价教师综合评价是非常可行的。     

基于AHP和TOPSIS的教师评价模型

对于教师的综合考评是高等学校的一项重要任务。文中给出了利用层次分析法(AHP)和逼近理想解的排序方法 (TOPSIS)的教师综合评价模型。首先利用AHP确定各评价指标的权重,在此基础上采用TOPSIS算法给出教师综合评价排序的准则。经过数据验证,证明该算法是有效的。     

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.