欧洲对聚合物淬火剂的看法

在欧洲合成淬火剂或聚合物淬火剂用于铁合金和有色合金热处理工业已有30年左右的时间了,其使用范围从感应淬火到钢丝索氏体化处理。最早的合成淬火剂是聚乙烯醇(PVA),在日益增加的感应淬火中,它用     

“友来友往大学生学术生活交流网”网络平台技术研究

建本文是《关于"友来友往大学生学术生活交流网"网络平台研究》的技术实现。在需求分析的基础上,共同讨论总结出不同的功能模块,协同开发实现整个系统的构建。为满足系统的高扩展性,后续的开发等要求,我们选择利用分布式的特点。专门利用一个子系统作为整个项目系统的数据中心,该中心只负责数据信息的提供,不提供页面显示和数据逻辑处理。单纯地将页面,处理逻辑和数据分开。更加体现软件设计的MVC典范思想。     

Leader-following consensus for uncertain second-order nonlinear multi-agent systems

This paper studies the leader-following consensus problem for a class of second-order nonlinear multi-agent systems subject to linearly parameterized uncertainty and disturbance. The problem is solved by integrating the adaptive control technique and the adaptive distributed observer method. The design procedure is illustrated by an example with a group of Van der Pol oscillators as the followers and a harmonic system as the leader.     

美国新桥水水电站的掺气水轮机

杜克（Duke）能源公司卡罗莱纳（Carolinas）州有限责任公司计划为桥水（Bridgewater）工程装机28 MW的新建水电站安装掺气水轮机。期望这些为现场情况专门设计的水轮机可使杜克能源公司提高工程下游水流中的溶解氧含量,同时也使效率损失降到最小。     

战神剧情与背景乱弹

注意 看着圣斗士YY雅典娜的人请奠看此文。还没将3代通关的人莫看此文,文中有严重剧透!另外,《战神》的剧情和希腊神话间还是有些出入的,所以看此文的时候可能会产生些混乱,请各位见谅。     

中国标准DiiVA会否威胁HDMI地位

HDMI（高清多媒体接口）已被广泛应用于电视、蓝光（BD）录像机、摄像机等各种音视频设备上。对于台式音视频设备来说,HDMI已经成为事实上的标准接口。相关调查数据表明,2009年出货的所有数字电视都将配备HDMI接口。     

Reflection and transmission properties of holographic mirrors and holographic Fabry-Perot filters. II. Holographic mirrors with partially coherent light

The reflection and transmission properties of holographic mirrors (HM's) under partially coherent illumination are investigated with emphasis on the properties of reflected light. The effects of a HM on the spectrum and on the coherence properties of partially coherent incident light are studied. We show that within angular and frequency-selectivity ranges of HM's (where their reflectivities are nearly uniform), the changes in the spectrum and in the coherence properties are negligible. Yet changes are expected when the spectrum of the incident light falls beyond frequency-selectivity ranges of the HM's or when the spectrum of the reflected light is observed beyond the angular-selectivity ranges of the mirrors. We illustrate the results by considering in detail the performance of HM's when the incident light is produced by planar secondary Gaussian Schell-model sources. Some computed curves are presented.     

Shift-invariant interpattern association neural network

A shift-invariant neural network that uses the translation-invariant property of the modulus Fourier spectra with the heteroassociation interpattern association memory is proposed. A binary encoding of a spectral sampling of the training set is used to preserve the main features. Computer simulations and experimental demonstrations are provided that show the shift-invariant property of the proposed optical neural network.