A Control Problem for Nonstationary Population Systems

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Stormwater Management in Hong Kong

IntroductionStormwater management(SWM) in Hong Kong isthe responsibility of the drainage servicesdepartment (DSD) of the Governmentof the HongKong Special Administrative Region.Thedepartment is charged with the formulation ofpolicy and the design,construction,operation andmaintenance of all public stormwater drainagesystems,as well as approving private drainsthrough an administrative framework.　 The principal concern of SWM is the reductionof the risk and extent of flooding.Thus,thesuc…     

The Single-Vendor-Single-Buyer Integrated Production-Shipment Model with Stock Dependent Demand Rate

In the integrated production-shipment models for the single-vendor-single-buyer system presented hitherto, the demand rate of items is treated as a constant. However, many researchers have observed that the presence of more quantities of the same product tends to attract more customers. This suggests that the demand rate should depend on the stock level. This paper presents a single-vendor-single-buyer production-shipment model with the stock dependent demand rate, based on the demand rate linearly depending upon the stock level at any instant of time.     

化学钟和化学混沌

多数化学家相信化学反应的过程总是可以预见的.但是有些无机和有机化学的催化反应却以奇特的无规则的方式进行.     

智能机器人灵巧手的研究

介绍了过去几年ＤＬＲ开发的Ⅰ型和Ⅱ型手 .ＤＬＲ Ⅰ是一种多传感器四指手 ,它具有 12个关节 (每个手指具有 3个关节 ) ,这些关节集成在手指和手掌内 .作为世界上最复杂的机械手之一的ＤＬＲ Ⅰ手共具有 112个传感器、大约 10 0 0个机械零件和 15 0 0个电子元件 .手的关键部件是人工肌肉 ,这是一种小巧但动力很强的线性驱动器 ,它是首先实现替代液压和气压驱动器的机电驱动器这一 .基于ＤＬＲ Ⅰ手的实验结果研制的ＤＬＲ Ⅱ手具有以下 4个明显的优点 :①可重构的手掌 ;②易于维护的开放式结构 ;③采用了新的通讯结构 ,使得手的引出线从Ｄ…     

Feature point matching of curved surface and robust uncertainty

1 .INTRODUCTIONStereovisionis well used in wide aspects of robotvision, object recognition[1 ~7], VR[8]and recon-struction[9]and so on. Stereo matching is a hardapproachin stereovision especially for curved sur-face due to occlusions and noises . There were al-ready some related methods[1 ~3]such as matchingunder robust esti mation of epipolar geometryrecovery[1]or selecting salient points fromi magepair[2]. Muchi mportance has been attached to theuncertainty of the corner position and i…     

加拿大阿尔伯达西部泥盆系凯恩组的上浅旋回成因

加拿大阿尔伯达西部的上泥盆统凯恩组中上浅旋回沉积比较发育,每个旋回自下而上是由潮下带逐渐变为潮坪沉积而形成的。潮坪沉积为浅灰色粉晶白云岩,风化后至黄褐色,具水平纹理、泥裂和鸟眼等构造;潮下带沉积包括深灰色纹理细晶白云岩、虫迹细晶白云岩和层孔虫细晶白云岩,这些旋回发育于海侵初期,是在海平面上升速度基本不变的情况下,沉积速度变化而形成的。上浅旋回中的潮下带沉积和潮坪沉积的厚度可用来推测古水深和潮差。     

A Multi-Agent Based Equipment Bidding System on the Web

This paper puts forward a new framework of multi-agent based equipment bidding system on the Web (MAEBSW). The purpose of the paper is to make the process of enterprise equipment bidding, especially the decision process of enterprise equipment bidding, more intelligent. The system discussed in this paper is an efficient method for the enterprises doing business electronically. We also present our opinion of the approaches to defining agents. We emphasize the importance of agent being able to provide explanation about its behavior for the user or other agents. Based on this opinion we design a new common architecture of most agents in MAEBSW.     

Metallurgy, the Father of Materials Science

The BeginningsThe English- language phrase materials science andengineering ( MSE) emerged at an unknown timeand place in the United States of America in theearly 1 95 0 s.One suggestion is that it,and theconcept it denotes,arose out of sustaineddiscussio…