检索结果-南通市图书馆

science china Mathematics 2001年第S1期44卷 193-198页

作者： WANG Wei HUANG Qing WANG Haocai YANG Mingchu LUO Jianbin WEN Shizhu 1. Institute of information materials engineering, university of Electronics science and technology 2. university of Southwest Jiaotong university 3. state key laboratory of tribology, tsinghua university, beijing 100084, china Univ Electr Sci & Technol Inst Informat mat engn Chengdu Peoples R China Tsing Hua Univ State Key Lab Tribol Beijing 100084 Peoples R China Univ Electr Sci & Technol china Inst Microelectr & Solid State Electr Chengdu Peoples R China

Lubricant on magnetic hard disk is essential to the stable lubrication at the head/diskinterface of the computer hard disk drive, The depletion phenomenon of the perfluoropolyalkylether(PFPE) lubricant ZDOL caused by the head was investigated. FC722, a type ofpoly(fiuoroalkylmethacrylate) used as anti-wetting-agent (AWA) on the magnetic head, and its ef-fect on reducing lubricant depletion was study. Time-of-flight secondary ion mass spectrometer(TOF-SIMS) was used to characterize the lubricant ZDOL and AWA. TOF-SIMS results suggestthat the lubricant depletion should be due to dynamic friction between the magnetic head and diskduring the head flying or seeking over the disk surface, the amount of lubricant picked up by thehead varying with the different flying height. The AWA coating layer on head obviously reduces theamount of lubricant picked-up. The possible molecular interaction mechanics of AWA and ZDOLwith DLC overcoat of the head was discussed.

关键词： Tribo-chemistry depletion ZDOL lubricant TOF-SIMS

宽线段Hough变换及其在箭靶识别上的应用

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计算机工程与应用 2003年第26期39卷 61-63页

作者：王鹏朱小燕清华大学计算机系智能技术与系统国家重点实验室北京100084

Hough变换是用于检测图像中直线段的有力工具。论文提出的宽线段Hough变换针对传统Hough变换进行了改进,使之适用于多条宽线段同时存在的情况,并且解决了端点提取的问题。该方法应用于箭靶识别取得了很好的效果,实验表明对比传统方法具... 详细信息

Hough变换是用于检测图像中直线段的有力工具。论文提出的宽线段Hough变换针对传统Hough变换进行了改进,使之适用于多条宽线段同时存在的情况,并且解决了端点提取的问题。该方法应用于箭靶识别取得了很好的效果,实验表明对比传统方法具有较大优势。

关键词： Hough变换直线检测

Topology Based Reliable Virtual Network Embedding from a QoE Perspective

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china Communications 2018年第10期15卷 38-50页

作者： Peiying Zhang Sheng Wu Miao Wang Haipeng Yao Yunjie Liu College of computer & Communication Engineering China University of Petroleum (East China) state key laboratory of Networking and Switching technology Beijing University of Posts and Telecommunications DFH Satellite Co. Ltd.

In the network virtualization environments, one of the most challenges is how to map the virtual networks(VNs) onto a shared substrate network managed by an infrastructure provider(In P), which is termed as virtual network embedding problem. Prior studies on this issue only emphasize on maximizing the revenue or minimizing the energy consumption while ignoring the reliability requirements of end-users. In our work, we incorporate the reliability probability into the virtual network embedding process with an aim to improve the Qo S/Qo E of end users from a new perspective. We devised two novel reliable virtual network embedding algorithms called RRW-Max Match and RDCC-VNE based on RW-Max Match and DCC-VNE, respectively. Extensive simulations demonstrated that the efficiency of our proposed algorithms is better than those of two primitive algorithms in terms of the reliability demands, the acceptance ratio of virtual networks and the long-term average revenue.

关键词： virtual network embedding reliability probability node mapping procedure link mapping procedure node ranking metric

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人工鱼的认知模型研究

计算机科学 2004年第11期31卷 187-191页

作者：班晓娟曾广平艾冬梅涂序彦北京科技大学信息工程学院北京科技大学应用学院北京100083

本文将人工生命的"自繁衍"特性引入到计算机动画创作中。提出并建立了面向自繁衍的人工鱼的认知模型,提高人工鱼的认知能力,实现基于"动物逻辑"的人工鱼高级行为规划。建立了人工鱼产生交配欲望、产卵和环境选择等预定义行为的认知模型... 详细信息

本文将人工生命的"自繁衍"特性引入到计算机动画创作中。提出并建立了面向自繁衍的人工鱼的认知模型,提高人工鱼的认知能力,实现基于"动物逻辑"的人工鱼高级行为规划。建立了人工鱼产生交配欲望、产卵和环境选择等预定义行为的认知模型。建立了人工鱼随意性行为的认知模型,并利用子集搜索等技术提高搜索效率。

关键词：人工生命性行为高级认知能力研究动物环境选择认知模型计算机动画行为规划

A Framework and QoS Based Web Services Discovery

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A Framework and QoS Based Web Services Discovery

ANALYSIS AND SYNTHESIS OF FUZZY STOCHASTIC systemS VIA LMI APPROACH

IEEE beijing SECTION(跨国电气电子工程师学会北京分会)

作者： Yin Baocai,Yang Huirong,Fu Pengbin,Gu Liheng,Liu Mingli beijing Municipal key laboratory of Multimedia and intelligent Software technology, College of computer science and technology,beijing university of technology, beijing,china

Current web services standards lack the support of formal semantic descriptions of a service’s nonfunctional characters,*** Quality Of *** a large number of functionally-equivalent services have been discovered,it is difficult for users to choose which one to be ***,QoS becomes a very critical factor in selecting among these candidates services to best meet users *** this paper,we design and build a general QoS ontology to support web services nonfunctional *** ontology can solve the interoperability of QoS *** also give a semantic web services discovery framework based on QoS *** framework supports the automatic discovery of web services and it can improve the efficiency for users to find the best services.

关键词： semantic web QoS ontology web services discovery

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ANALYSIS AND SYNTHESIS OF FUZZY STOCHASTIC SYSTEMS VIA LMI A...

2002年IEEE十区计算机、通信、控制和电机工程会议

作者： LIU Huaping He Kezhong SUN Fuchun SUN Zengqi state key Lab. of intelligent technology and systems, beijing china 100084 department of Compute science and technology, tsinghua university beijing china 100084 Robotics laboratory, Shenyang Institute of Automation, Chinese Academy of sciences, Shenyang china 110015

This paper studied a general class of nonlinearstochastic systems, which can be approximated by T-Sfuzzy model. The problem both the control and the stateentering into the diffusion term is discussed here. A PDCstate feedback controller is proposed to guarantee themean-square stability of the closed-loop system. All theresults are represented by the linear matrix inequalities.

关键词： Fuzzy model linear matrix inequalities stability analysis stochastic systems

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摊铺机计算机控制系统设计

湘潭矿业学院学报 2000年第2期15卷 34-38页

作者：欧青立何克忠湘潭工学院信息与电气工程系湖南湘潭411201 清华大学计算机科学与技术系智能技术与系统国家重点实验室北京100084

针对国家 863项目要求及道路摊铺工程需求 ,概述了LTU12 5A沥青混凝土自动摊铺机的总体功能和技术指标 ,分析了摊铺机自动控制系统的关键技术 ,给出了LTU12 5A摊铺机计算机测量与控制系统的结构与设计图 6,参

关键词：自动摊铺机模糊控制道路摊铺计算机控制系统

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沥青混凝土自动摊铺机监控系统软件设计

计算机工程与应用 2003年第8期39卷 201-204页

作者：周明胡斌何克忠清华大学计算机智能技术与系统国家重点实验室北京100084

针对LTU125A沥青混凝土自动摊铺机项目的技术要求,介绍了自动摊铺机监控系统中显示、键盘和通讯模块的软件设计方法。

关键词：自动摊铺机监控系统单片机液晶显示器键盘 CAN总线

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四合一的人脸识别查询系统的设计与实现

计算机工程与应用 2003年第6期39卷 33-36页

作者：杜成苏光大林行刚清华大学电子工程系智能技术与系统国家重点实验室图形图像分室北京100084

论文介绍了TH人脸识别查询系统(四合一)的设计思想和实现技术。该系统以人像识别技术为核心,采用客户机/服务器模式,建立和维护了一个含有人像特征以及文档信息的综合数据库,从而能够在输入一张未知人脸图像时,迅速地查询出最接近于待... 详细信息

论文介绍了TH人脸识别查询系统(四合一)的设计思想和实现技术。该系统以人像识别技术为核心,采用客户机/服务器模式,建立和维护了一个含有人像特征以及文档信息的综合数据库,从而能够在输入一张未知人脸图像时,迅速地查询出最接近于待查图像的若干已登记人员的身份信息。该系统应用到了人像识别、机群、数据库等多种技术。该系统在公安刑侦,海关,机场,车站等领域有着广泛的应用前景。

关键词：人脸识别查询系统设计人像识别客户机/服务器外部存储过程并行计算 ActiveX控件计算机