组织协同进化分类算法用于雷达目标一维像识别

针对雷达目标一维像识别问题，提出了一种基于组织协同进化分类算法的识别方法．该方法与现有进化分类方法的不同之处在于它的进化操作直接作用于样本而不是规则，采用了一种自下而上的搜索机制，即先使若干样本的集合得到进化，再从进化结果中提取规则．这样有利于避免在进化过程中产生无意义的规则．该方法不需要进行特征提取；对于高维数据，不需要预先进行降维处理；没有复杂的运算，训练和识别的速度都很快．对3种飞机微波暗室实测数据的识别实验表明，该方法性能稳定，优于基于支撑矢量机与子波核函数的方法，识别率均达到了96％以上．实验中还对算法的抗噪能力进行了测试，获得了良好的效果．     

基于免疫克隆与差分进化的入侵检测方法

随着网络技术的飞速发展,信息安全变得越来越重要.入侵检测方法已经成为信息安全领域的热门研究方向之一.入侵检测实质上是一个分类的问题,对于提高分类精度是十分关键的.免疫克隆算法和差分进化算法都是用于解决分类问题的比较有效的方法.结合先前免疫克隆算法和差分进化算法分别在入侵检测中所取得的良好效果,在对差分进化算法改进的基础上,提出了一种基于免疫克隆和差分进化的混合入侵检测方法.仿真实验结果表明,该方法比文献中提出的方法具有更高的检测率和更低的误检率,能使检测系统在一定程度上有效的识别未知入侵.     

基于混合免疫遗传算法的车辆调度问题

免疫算法是模仿生物体高度进化,复杂的免疫系统仿生的一种智能化启发式算法。在描述车辆调度问题数学模型及免疫算法综述的基础上,引入了一种基于抗体亲和力的混合免疫遗传算法,改进了抗体的交叉算子,解决了路径长度受限的车辆调度问题,实验结果表明,与遗传算法相比较,混合免疫遗传算法能更有效的解决车辆调度问题。     

基于遗传算法的准确分类规则知识发现

针对传统算法处理数据分类问题计算量大，易陷入局部最优解的缺陷，本文结合遗传算法的全局搜索特性，给出了基于遗传算法的准确分类规则知识发现方法。首先分析了用遗传算法进行分类规则挖掘的关键技术，给出个体编码、适应度函数的设计、遗传操作算子的设计；然后从理论上详细阐述了遗传算法的准确分类规则挖掘的方法；最后开发了基于JBuilder2006平台的仿真程序，从标准数据库中发现了准确的分类规则，实验结果验证了算法的有效性。     

免疫进化子波网络及其学习算法

本文首次对子波神经网络的分类机理进行了详细地研究,在此基础上将免疫进化算法与子波神经网络相集成,并提出了免疫进化子波网络模型及其学习算法.其中,免疫进化算法是一种集免疫机制和进化机制于一体的一种新的全局并行算法,它可以通过对进化环境的自适应和自学习,有针对性地抑制由原进化算子操作的盲目性而引起的退化现象.理论分析和用于双螺旋线分类的仿真结果表明,免疫进化子波网络不仅是可行的,也是十分有效的.由于免疫进化算法本身所固有的并行运算规则、智能搜索方式和概率判断准则,从而有利于弱化子波网络的应用条件,加强其联想记忆和信息处理的能力.     

基于AdaBoost的改进模糊分类规则集成学习

基于集成学习提出了一种新的模糊分类规则的产生算法。将分类规则的前件、后件模糊化,在自适应提升(Adaptive Boosting,AdaBoost)算法的迭代中,调整训练实例的分布,利用遗传算法产生模糊分类规则。并在规则学习的适应度函数中引入训练实例的分布,使得模糊分类规则在产生阶段就考虑相互之间的协作,产生具有互补性的分类规则集。从而改善了模糊分类规则的整体识别能力,提高了分类识别精度。     

基于免疫克隆选择算法的天线方向图综合技术研究

方向图综合技术是智能天线中的一项重要技术。由于采用遗传算法存在着易于早熟和局部寻优能力不足等缺点,为此,文中提出一种基于免疫克隆选择算法的阵列方向图综合技术。仿真结果验证了免疫克隆选择算法相对于标准遗传算法来说更容易找到全局最优解,不易陷入局部极值,且收敛速度快,实际应用表明,基于免疫克隆选择算法的方向图综合技术是切实可行的,且具有很好的推广潜力。     

基于免疫克隆算法的协同神经网络参数优化

针对现有协同神经网络参数优化方法的不足,提出了一种基于免疫克隆算法的参数优化方法.与在平衡注意参数条件下的算法和在不平衡注意参数条件下基于遗传算法和模拟退火算法的优化方法相比,新方法具有全局兼局部寻优能力,不易陷入局部极值,并且迭代步长是自适应调整的.对纹理图像与遥感图像的分类识别结果表明:新方法不仅具有更快的收敛速度而且具有更优的分类识别性能,同时验证了注意参数及所有参数对各原型模式之间竞争态势的影响,从而达到更佳的分类识别效果.     

基于免疫算法的入侵检测系统特征选择

入侵检测系统中的特征选择是一个组合优化问题。为了有效地进行特征选择，提出一种结合进化思想的免疫算法。算法中的免疫记忆单元确保了快速收敛于全局最优解，算法中的均匀交叉操作则体现了进化的思想。提出一个基于神经网络的入侵检测系统模型．该模型具有多分类．易于更新系统使其快速适应新型入侵的特点。在KDDCUP’99上的实验表明该算法是有效的。     

三种基于进化技术的优化算法及其对比

进化算法（EA）是模仿自然界生物进化或物种的社会行为而产生和发展的随机搜索方法，这种算法能够解决许多传统方法无法解决的大规模优化问题。本文简明介绍了三种基于进化的优化算法：遗传算法、蚁群优化算法和微粒群优化算法，并在原理、参数和应用方面对它们进行了对比。     

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.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

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.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

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.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

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.     

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.