韩国国内的半导体的投资

过去十年问,韩国的投资稳步增长,尤其是存储市场方面三星和现代频具实力。自从2002年开始,300mm硅片的生产能力迅速增长,目前预计2011年300mm硅片生产能力增     

识别人类的手势的机器人

位于新加坡的A*STAR讯通信研究所的研究人员已经创造了手势识别软件,这种软件可以让机器人经过短期的培训后,便能正确、迅速地识别人类的手势。Rui Yan所领导的研究小组采用了局域网络(LAN),这是一个具有认知功能的内存模型,旨在开发一个可以与社交机器人沟通的全新系统。训练机器人识别和回应人的手势是十分困难     

艺术的都市人 都市人的艺术

<正>自古以来,城市不仅是人类财富与权利的中心,更是人类智慧与文明的汇集地。一代又一代的都市人不仅创造着物质财富,更在城市文化的熏陶下,创造了属于自己的灿烂精神文明。艺术是人类文明创造出的一朵奇葩,自城市诞生以来,它就一直伴随着都市人。从古代城市的辉煌遗迹到现代都市的热闹繁华,虽然都市人和艺术都经历着时代的变迁和发展,但是,都市人与艺术之间的密切关系却未曾改变。都市人创造了属于他们自己的艺术,而艺术也带给了     

工业光纤的更好的经济效益

当美国国家航空航天局（NASA）兰利研究中心的研究人员观察电磁干扰如何潜在影响飞行导航和通信系统时,得到了一些惊人的结果。举个例子,来自一些超宽带信号的干扰可能会在没有预警的情况下突然消除飞机无线电。电磁干扰（EMI）也可能会导致无线电导航系统给出错误的读数。电磁干扰也可以影响距离测量设备,在某些情况下,读出的距离可能远离一整个海里。也许最令人担忧的是,严重的电磁干扰会中断空中防撞系统显示屏上的飞机图像。     

完美的TAIDEN 完美的服务

深圳市台电实业有限公司成立于1996年,专门从事现代会议系统设备的研发、设计、生产及世界范围的销售。台电公司经过多年不懈的努力,创出了“TAIDEN”这一民族品牌,取得了一系列具有自主知识产权的国际领先的会议系统的核心技术。TAIDEN产品系列达8种,近300个品种;并能提供从小型会议讨论到大型国际会议全系列会议系统解决方案,成为全球领先的现代会议系统设备制造商之一。     

计算机病毒的预防的思考

计算机病毒随着计算机的普及也渗透到信息化办公的各个领域,带给计算机操作系统难以防范的困扰。为使计算机信息安全有保障,研讨计算机的病毒的防范措施迫在眉睫。针对计算机病毒如何预防进行探究,并分析应对措施。     

基于FPGA的单片机的系统的设计

本文在阐述可编程逻辑器件特点及其发展趋势的基础上,利用EDA的硬件和软件技术,研究和设计了基于FPGA的8051单片机的片上系统。本文采用VHDL语言,应用先进的自顶向下的设计方法,在Active—HDL5．1编程环境下,应用层次化的设计思路,模块化的设计方法进行设计。     

解读中性服饰文化——女性的服饰的男性化与男性的服饰的女性化

对于现代人而言,服装不仅仅是一种物质上的满足,更重要的是精神上的需求,服装是人类高度文明的重要组成部分之一。近年来,随着思想观念的日渐开放和多元化,中性化服饰风潮席卷时尚界,成为引领大众消费的一种独特的服装风格。本文先对中性化服装的形成与发展进行分析,接着从中性服饰的审美价值及中性服装外观心理意义两方面对中性服饰文化进行解读。     

面向主题的搜索引擎的设计

总结现有面向主题的搜索引擎的技术特点,实现一个能满足基本需求的主题搜索引擎;在该课题中叙述了面向主题搜索引擎的重要性、实现方法、实现过程;主要是web文档抓取、特征提取、web文档分类技术;特征值应具有明显的特征,以此提高搜索引擎质量;在实现自动web文档分类时采用向量空间模型计算web文档间的相似度。     

设计的语言共享的网络

艺术设计语言,应是与接受者互动构成的网络,而网络用的核心是"共享".视觉表达的准确性和设计语言的认知度,是设计成功的关键所在,它决定着艺术设计的存在意义.     

Estimation of Parameters of Universal Distribution of Moments of Failure of Products

A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling.     

Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons

A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue.     

Assessment of intakes of mixtures of radionuclides

Australia has several uranium mines and a large number of mineral sand mines, with associated processing facilities. Exposures resulting from these mining and processing operations usually involve intakes of mixtures of radionuclides. This work describes the development of a suite of first order, linear compartment models, based on the ICRP Publication 66 respiratory tract model, and an analytical solution to the decay equations, for assessing the consequences of such intakes. The computer programs based on these models directly compute excretion, organ retention and organ and whole-body doses for intakes of either single radionuclides or any mixture of radionuclides belonging to the same radioactive decay chain. The intake can be via inhalation, ingestion or injection, and can be acute, chronic or of limited duration. The starting concentration and degree of secular (dis)equilibrium can be specified for each radionuclide. No assumptions need to be made about the relative magnitudes of the radioactive half-lives of the different nuclides.     

Estimation of potentialities of methods of summation of direct measurement errors

Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995.     

空压机轴承箱蜗壳温度探头油封改造

由于空压机进气侧轴承箱蜗壳温度探头密封效果不好,使空压机及其后续管道受到油污染。后将温度探头的O形圈密封改为骨架油封,杜绝了轴承箱漏油问题。文章简介空压机的结构和技术参数,详细介绍了骨架油封的制作和优点。     

Determination of parameters of microstructural inhomogeneity of deformation of metals by the method of modeling

The article suggests a method of evaluating the microstructural inhomogeneity of deformation of metals by modeling. The method includes the measurement of deformations of metal according to meshes of a dividing grid with small base and the calculation of the distribution parameters of microdeformations in model representation. It is shown that the modeling method makes it possible objectively to evaluate the microinhomogeneity of deformation of metals independently of the chosen mesh size of the dividing grid. New structural characteristics are introduced: the base and wave of variation expressing the degree of crumbling or amalgamation of metal grains by inhomogeneity of deformation.Translated from Problemy Prochnosti, No. 7, pp. 40–44, July, 1991.     

Characteristics of mechanical properties of materials in studies of conditions of attainment of marginal states

It is shown that conditions of attainment of marginal states in the material of structural components are formulated on the basis of analysis of force and deformation criteria of formation and development of destruction. The parameters of these criteria are data on types of structural materials, standard and special characteristics of their mechanical properties, structural forms of considered elements of the equipment, and their operating stress loading. In this case, the construction of a system of state equations for describing interrelation of current damage, external actions, and responses to them is based on the concept of calculating variations in properties of materials at all stages of the design life cycle.     

Analysis of the rate of propagation of the wave of change of boiling modes

An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate agreement is demonstrated between the derived relations and experimental data.     

Analysis of anisotropy of properties on the basis of studies of texture of coarse-grained ingots of thermoelectric materials

An analysis of anisotropy of the properties of a Bi₂Se_0.3Te_2.7 solid solution was carried out using construction of demonstrative surfaces for thermoelectric effectiveness and thermal expansion coefficients. It is shown that the texture is an important factor forming anisotropy of properties and technological fitness of ingots for manufacturing modules. Anisotropy of properties based on the studies of the ingot textures obtained using the float-zone method and Bridgman method (growing thermoelectric plates in a flat cavity) was studied.