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Fully Distributed Cooperative Motion of Group Robots

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Journal of Systems Engineering and Electronics 2002年第2期13卷 28-35页

作者： Dong Shenglong, chen Weidong & Xi Yugenginstitute of Automation, shanghai jiaotong university, 200030, P.R. china (Received March 9,2001) institute of Automation Shanghai Iiaotong University 200030 P. R. China

This paper is focused on the fully distibuted cooperative motion of group robots and proposes an approach. Each robots has a local sensing ability and a simple action selection strategy. Computational complexity is decreased by the fully distributed architecture and the information insufficiency is solved by the interaction between the robots and the environment. Variable loop and random method are used to deal with the fluctuation and equity selection problem and the rapidity and reasonability are guaranteed. Some simulations have proved the effectiveness of the proposed approach.

关键词： Biology Iterative methods Probability Sensors

Gas hydrate fast nucleation from melting ice and quiescent growth along vertical heat transfer tube

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Science china Chemistry 2005年第1期48卷 75-82页

作者： XIE Yingming1,2, GUO Kaihua2, LIANG Deqing2, FAN Shuanshi2, GU Jianming1 & chen Jinggui2 1. institute of Refrigeration and Cryogenics, shanghai jiaotong university, shanghai 200030, china 2. Guangzhou institute of Energy Conversion, The Chinese Academy of Sciences, Guangzhou 510640, china 1. institute of Refrigeration and Cryogenics Shanghai Jiaotong University 200030 Shanghai China 2. Guangzhou institute of Energy Conversion The Chinese Academy of Sciences 510640 Guangzhou China

During the observation of HCFC141b gas hydrate growth processes outside a ver- tical heat transfer tube, two exciting phenomena were found: fast nucleation of gas hydrate from melting ice, and the spontaneous permeation of water into the guest phases along the surface of heat transfer tube to form gas hydrate continuously. These two phenomena were explained with zhou & Sloan’s hypothesis and the theory of surface free energy respectively, and a novel method of gas hydrate formation was presented——gas hydrate fast nucleation from melting ice and quiescent growth along heat transfer tube. There is no mechanic stirring in this method, the formed gas hydrates are compact, the ratio of unreacted interstitial water is little, which overcome the drawback of high energy cost and high ratio of unreacted interstitial water among the formed gas hydrates in the system with mechanic stirring. This finding will benefit the gas hydrate ap- plication technologies such as natural gas storage technology or cool storage technology with gas hydrate.

关键词： gas hydrate, natural gas storage, cool storage, fast nucleation from melting ice, permeation, surface free energy.

基于USB2.0协议的大容量数据传输模块设计

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计算机工程与应用 2004年第13期40卷 106-107,115页

作者：陈阳新曹其新付庄上海交通大学机器人研究所上海200030

介绍了CYPRESS公司的一款USB2.0设备控制器的系统结构及其特点,并利用该芯片设计了基于USB2.0协议的大容量数据传输模块,介绍该模块的系统原理和实现方法,并简单介绍了相关软件的开发,最后通过测试程序和逻辑分析仪验证了传输速度和数... 详细信息

介绍了CYPRESS公司的一款USB2.0设备控制器的系统结构及其特点,并利用该芯片设计了基于USB2.0协议的大容量数据传输模块,介绍该模块的系统原理和实现方法,并简单介绍了相关软件的开发,最后通过测试程序和逻辑分析仪验证了传输速度和数据传输的正确性,并在大型喷墨打印机上得以实现。

关键词：通用串行总线喷墨打印机 CPLD 数据传输

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双联变频空调系统建模与控制方法仿真研究

系统仿真学报 2002年第5期14卷 643-646页

作者：陈武周兴禧夏凊晋欣桥王懿上海交通大学制冷与低温工程研究所上海200030

双联变频空调是非线性、时变、强耦合、多变量的控制对象;这使得过份依赖于被控对象精确的控制数学模型,如传递函数、高阶方程的经典控制方法难以实现。本文则着重于根据双联变频空调的运行特性,制定了双电子膨胀阀及压缩机的控制方法;... 详细信息

双联变频空调是非线性、时变、强耦合、多变量的控制对象;这使得过份依赖于被控对象精确的控制数学模型,如传递函数、高阶方程的经典控制方法难以实现。本文则着重于根据双联变频空调的运行特性,制定了双电子膨胀阀及压缩机的控制方法;并引进了负荷系数的概念和模糊推理方法。通过建立系统的动态热力学模型,利用仿真运算考察双电子膨胀阀开度及压缩机转速的调节对系统的控制结果,以验证控制方法的可行性。仿真结果表明此控制方法具有响应快,超调小,控温精度高,易于微机实现及实时控制性好的优点。

关键词：双联变频空调系统建模控制方法仿真模糊推理动态系统模型压缩机家用空调

A Practical SSL Server Performance Improvement Algorithm Based on Batch RSA Decryption

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Journal of shanghai jiaotong university(Science) 2008年第1期13卷 67-70页

作者：李世群吴永东周建英陈克非 Department of Computer Science and Engineering Shanghai Jiaotong University institute for Infocomm research

The secure socket layer/ transport layer security（SSL/TLS） handshake protocol uses public key cryptographic algorithms such as RSA for key establishment. Typically, public key cryptographic algorithm is computational intensive due to the modular multiplications. Therefore, SSL/TLS servers often become swamped while performing public key decryptions when the simultaneous requests increase quickly. A batch RSA decryption algorithm was proposed. The novel algorithm provides the reasonable response time and optimizes server performance significantly. The decryption speedup is proportional to the batch size b, for instance, the speedup factor is 4, while in Shacham＇s scheme the acceleration rate is only 2.5 when b = 4.

关键词： batch decryption secure socket layer (SSL) server public key algorithm

具有力觉临场感主从机器人在遥装配作业中的应用

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上海交通大学学报 1997年第12期31卷 57-60,68页

作者：陈卫东蔡鹤皋席裕庚赵锡芳上海交通大学自动化系哈尔滨工业大学上海交通大学机器人研究所

通过建立一套具有力觉临场感的主从机器人系统，研究在非确定性环境下借助临场感技术实现遥操作的控制理论和设计方法．遥装配作业实验结果表明了控制方案的可行性．

关键词：主人机器人力觉临场感遥装配遥操作机器人

空间电荷区和晶界复合对多晶太阳电池基区少数载流子寿命的影响

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太阳能学报 2003年第5期24卷 649-654页

作者：陈凤翔崔容强孟凡英赵占霞古丽那周之斌上海交通大学物理系太阳能研究所上海200240

该文采用多晶硅太阳电池模型,通过引入空间电荷区复合速度来研究空间电荷区复合对少子寿命的影响,从计算结果中发现当复合速率大于105cm/s时,空间电荷区的复合影响不可忽略,必须对所测得的寿命值进行修正。

关键词：太阳电池空间电荷区少数载流子寿命开路电压衰减法

Study on Strategy of Development Path of china Service Outsourcing Industry

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Study on Strategy of Development Path of China Service Outso...

工程和商业管理国际学术会议

作者： Shiqiang TANG Min zhou Yaping chen School of Management shanghai university of Engineering Science shanghai china.201620

This paper,based on the analysis of the active roles and the possible negative effects of offshore service outsourcing,studied the service outsourcing development path through theoretical analysis as well as industry practical *** research conclusions suggest that the developing countries such as china should first focus on the development of onshore outsourcing to lay a solid foundation for service outsourcing industry,and then develop offshore outsourcing when the international comparative advantage of the industry is *** outsourcing and onshore outsourcing should be coordinated in their development.

关键词： Service outsourcing comparative advantage development path coordinated development

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基于视频监控技术的桥梁防撞系统

上海交通大学学报 2011年第S1期45卷 93-96页

作者：张慧哲陈洪周良上海市城市建设设计研究院上海200125

针对桥梁防撞研究这一工程界的热点问题,概述了典型的桥梁船撞事故.以此为基础,提出了基于视频监控技术的桥梁防撞系统解决方案.通过摄像机的递次架设及视频分析技术完成了从发现、监视到报警的三级立体监控预警体系,对目标船舶进行实... 详细信息

针对桥梁防撞研究这一工程界的热点问题,概述了典型的桥梁船撞事故.以此为基础,提出了基于视频监控技术的桥梁防撞系统解决方案.通过摄像机的递次架设及视频分析技术完成了从发现、监视到报警的三级立体监控预警体系,对目标船舶进行实时、准确的监控,为桥梁的船舶碰撞问题提供了可行有效的解决方案.

关键词：视频监控桥梁防撞防护体系