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wuhan University Journal of Natural Sciences 2005年第1期10卷 161-164页

作者： ZHANG Bao-liang 1,2,HU Han-ping 1,2,WU Xiao-gang 1,2, KONG Tao 31.State Education Ministry Key Laboratory of Image Information and Intelligent Control, wuhan 430074, hubei, china 2.institute of Pattem Recognition and Artificial Intelligonce, Huazhong University of Science and Technology, wuhan 430074, hubei, china 3.709th research institute of china shipbuilding engineering society, wuhan 430074, hubei, china State Education Ministry Key Laboratory of Image Information and Intelligent Control Wuhan China Huazhong University of Science and Technology Institute of Pattern Recognition and Artificial Intelligonce Wuhan China (GRID:grid.33199.31) (ISNI:***) State Education Ministry Key Laboratory of Image Information and Intelligent Control Wuhan China (GRID:grid.33199.31) Huazhong University of Science and Technology Institute of Pattern Recognition and Artificial Intelligonce Wuhan China (GRID:grid.33199.31) (ISNI:***) 709th research institute of china shipbuilding engineering society Wuhan China (GRID:grid.33199.31)

A network-based Virtual Private Network (VPN) architecture by using fundamental routing mechanism is proposed. this network is a virtual overlay network based on the relay of IP-in-IP tunneling of virtual routing modules. the packet format employs the encapsulation of IPSec ESP(Encapsulating Security Payload), an impact path code and an extended DS(Differentiated Services) code to support multi-path routing and QoS. Comparing with other models of VPN, this network system can be deployed in the current network with little investment, and it is easy to implement. the simulation result shows its performance is better than the traditional VPN system of black box mode.

关键词： virtual routing network-based VPN proactive defense

An Analysis on Application and Trend of Low-Alloy Steel in shipbuilding and Offshore engineering Industry

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Journal of Iron and Steel research International 2011年第S1期18卷 827-830页

作者： LI Xin-xin,NA Rong-qing,MENG Zhao-chuang (Dalian shipbuilding Industry engineering and research institute,Dalian 116000,Liaoning,china) Dalian Shipbldg Ind Engn & Res Inst Dalian 116000 Liaoning Peoples R China

Since 2003,china shipbuilding industry has stepped into the orbit of fast *** this paper,a brief analysis has been made on application of low-alloy steel in the shipbuilding and offshore engineering industry,and the further requirements on the marine steel plates elaborated in combination with the future development trend in this ***,a reference approach is proposed for potential cooperation between the shipbuilding industry and steel industry.

关键词： low-alloy steel ship and offshore engineering

UNSTEADY WAVES DUE TO AN IMPULSIVE OSEENLET BENEAth thE CAPILLARY SURFACE OF A VISCOUS FLUID

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Journal of Hydrodynamics 2008年第1期20卷 23-29页

作者： LU Dong-qiang CHEN Xiao-bo Shanghai institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China Shanghai Key Laboratory of Mechanics in Energy and Environment engineering Shanghai 200072 China research Department Bureau Veritas Tour Manhattan 5-6 P1 de l＇Iris 92077 Paris La Defense FranceCollege of Shipbuilding Engineering Harbin Engineering University Harbin 150001 China

the two-dimensional free-surface waves due to a point force steadily moving beneath the capillary surface of an incompressible viscous fluid of infinite depth were analytically investigated. the unsteady Oseen equations were taken as the governing equations for the viscous flows. the kinematic and dynamic conditions including the combined effects of surface tension and viscosity were linearized for small-amplitude waves on the free-surface. the point force is modeled as an impulsive Oseenlet. the complex dispersion relation for the capillary-gravity waves shows that the wave patterns are characterized by the Weber number and the Reynolds number. the asymptotic expansions for the wave profiles were explicitly derived by means of Lighthill’s theorem for the Fourier transform of a function with a finite number of singularities. Furthermore, it is found that the unsteady wave system consists of four families, that is, the steady-state gravity wave, the steady-state capillary wave, the transient gravity wave, and the transient capillary wave. the effect of viscosity on the capillary-gravity was analytically expressed.

关键词： Oseen flow fundamental singularity asymptotic solution Weber number Reynolds number

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模乘算法的快速移位实现方法

武汉理工大学学报 2009年第23期31卷 108-112页

作者：方湘艳熊庭刚袁由光哈尔滨工程大学计算机学院哈尔滨15001 中国船舶重工集团公司第709研究所武汉430074

针对大数模乘算法的滑动窗口实现中移位次数较多,提出了一种适应芯片实现的快速循环移位实现方法。通过将大数乘法运算转换为查找表和加法运算,并减少进位的判断和增加每次循环移位的距离来减少加法次数和移位次数。使得完成一次大数模... 详细信息

针对大数模乘算法的滑动窗口实现中移位次数较多,提出了一种适应芯片实现的快速循环移位实现方法。通过将大数乘法运算转换为查找表和加法运算,并减少进位的判断和增加每次循环移位的距离来减少加法次数和移位次数。使得完成一次大数模乘运算的时间随着移位窗口的增加而减少。

关键词：模乘循环移位滑动窗口加法器

CALCULATION AND TEST research OF ADDED MASS OF SLENDER BODIES IN STRAIGHT WATER CHANNEL

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Journal of Hydrodynamics 1991年第1期3卷 16-21页

作者： Yang, Song-lin Wang, Tai-shu Zhenjiang shipbuilding Inst Zhenjiang China

In this paper, a numerical method of calculating added mass coefficients of slender bodies in straight water channels with strip theory is presented. the added mass coefficients of a heaving ellipsoid below the free s... 详细信息

关键词： Computers Applications Equations of Motion Flow of Fluids Channel Flow

Investigation of Allowable Stresses for Fatigue Design of Fixed Offshore Platforms

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china Ocean engineering 1992年第1期7卷 19-25页

作者： Xia Yongnian Senior Engineer, Technical research institute for Sea-Going Ships, china Classification society (ZC), Shanghai

Fatigue design method is usually used for estimating whether a platform structure meets the requirements of fatigue resistance. It is described in API RP-2A and ZC rules for fixed offshore platforms, in which the allowable stresses for fatigue design are defined. In this paper discussed are the allowable stresses related factors, such as wave climate, structural response, fatigue behaviour of structural members.

关键词： offshore structure fatigue fixed offshore platform design stress structural response

Calculation of Eddy Current Losses in a Solid-Rotor Cage Induction Motor by Finite Element Analysis

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Calculation of Eddy Current Losses in a Solid-Rotor Cage Ind...

Construction and application of formal ontology for mine

第11届国际电机与系统学术会议

作者： Tong Yang~(1*) Libing Zhou~1 Wei Jiang~2 1 College of Electrical and Electronic engineering Huazhong University of Science and Technology wuhan 430074 china 2 wuhan institute of Marine Electric Propulsion china shipbuilding Industry Corporation wuhan 430074 china

＜正＞this paper presents the calculation of eddy current losses in a solid-rotor cage induction motor by using two-dimensional time-harmonic finite element *** end impedances are represented by field-coupled circuit elements and nonlinear properties are introduced by effective magnetization *** evaluate the effects of eddy current losses on motor’s performance,the losses in solid rotor and copper bars are calculated at locked-rotor and rated *** numerical solutions are compared with the test results to validate the modeling.

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中国有色金属学会会刊：英文版 2011年第S3期21卷 577-582页

作者： CHENG Gang 1, 2, ZHANG Yin-ling1, 2, WANG Fei 1 ,2, ZHANG Zhen-hui 3, GUO Yu-xiang1, 2 1. Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping, Henan Polytechnic University, Jiaozuo 454003, china 2. School of Surveying and land Information engineering, Henan Polytechnic University, Jiaozuo 454003, china 3. Qingdao Branch of Naval Aeronautical engineering institute, Qingdao 266041, china Henan Polytech Univ Key Lab Mine Spatial Informat Technol State Bur Surveying & Mapping Jiaozuo 454003 Peoples R China Henan Polytech Univ Sch Surveying & Land Informat Engn Jiaozuo 454003 Peoples R China Naval Aeronaut Engn Inst Qingdao Branch Qingdao 266041 Peoples R China

Digital mine is the only way for the development of mining industry in china. Due to lack of appropriate standards and norms, and different awareness in the field of digital mine among academia and industry insiders, the meaning for digital mine is still unclear. Starting from the nature of mining and removing of views of specialized fields, this paper constructs formal ontology for digital mine and proposes the four levels for it. the ontology clarifies the concept world for digital mine, defines the meaning of concepts and relations clearly, provides a reference for the standard construction for digital mine and provides a unified semantic framework for the integration of heterogeneous mine data. Meanwhile, it can provide formal reasoning knowledge for expert system of digital mine and improve the intelligence and automation while the machine automatically interpreting and processing mine spatial data.

关键词： Digital mine formalization ontology concept world semantic share

An Anthropomorphic Robot Hand Developed Based on Underactuated Mechanism and Controlled by EMG Signals

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Journal of Bionic engineering 2009年第3期6卷 255-263页

作者： Da-peng Yang~1 Jing-dong Zhao~1 Yi-kun Gu~1 Xin-qing Wang~1 Nan Li~1 Li Jiang~1Hong Liu~(1,2) Hai Huang~3 Da-wei Zhao~41.State Key Laboratory of Robotics and System,Harbin institute of Technology,Harbin 150001,P.R.china2.institute of Robotics and Mechatronics,German Aerospace Center,Munich 82230,Germany3.College of shipbuilding engineering,Harbin engineering University,Harbin 150001,P.R.china4.College of Automation,Harbin engineering University,Harbin 150001,P.R.china [a]State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150001 P. R. China [b]Institute of Robotics and Mechatronics German Aerospace Center Munich 82230 Germany [c]College of Shipbuilding Engineering Harbin Engineering University Harbin 150001 P. R. China [d]College of Automation Harbin Engineering University Harbin 150001 P. R. China

When developing a humanoid myo-control hand,not only the mechanical structure should be considered to afford a high dexterity,but also the myoelectric (electromyography,EMG) control capability should be taken into account to fully accomplish the actuation *** paper presents a novel humanoid robotic myocontrol hand (AR hand Ⅲ) which adopted an underac- tuated mechanism and a forearm myocontrol EMG *** AR hand Ⅲ has five fingers and 15 joints,and actuated by three embedded *** can be found within each finger and between the rest three fingers (the middle finger,the ring finger and the little finger) when the hand is grasping *** the EMG control,two specific methods are proposed:the three-fingered hand gesture configuration of the AR hand Ⅲ and a pattern classification method of EMG signals based on a statistical learning algorithm-Support Vector Machine (SVM).Eighteen active hand gestures of a testee are recognized ef- fectively,which can be directly mapped into the motions of AR hand Ⅲ.An on-line EMG control scheme is established based on two different decision functions:one is for the discrimination between the idle and active modes,the other is for the recog- nition of the active *** a result,the AR hand Ⅲ can swiftly follow the gesture instructions of the testee with a time delay less than 100 ms.

关键词： humanoid hand underactuated mechanism EMG control suppon vector machine