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可摘局部义齿不同加载条件下的三维有限元分析

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上海交通大学学报 2010年第11期44卷 1588-1594页

作者：崔雯王冬梅王成焘黄庆丰张富强上海交通大学生物医学制造与生命质量工程研究所上海200240 上海交通大学医学院附属第九人民医院口腔修复科上海200011

为分析对比3种可摘局部义齿修复重建肯氏I类缺失牙列的生物力学效果,对中国力学虚拟人数据库中现有模型进行改建,以此为基础形成三臂卡环固位、RPI卡环固位和种植体支持的RPI卡环固位3种不同方案的几何及有限元模型,导入ABAQUS6.5-1完... 详细信息

为分析对比3种可摘局部义齿修复重建肯氏I类缺失牙列的生物力学效果,对中国力学虚拟人数据库中现有模型进行改建,以此为基础形成三臂卡环固位、RPI卡环固位和种植体支持的RPI卡环固位3种不同方案的几何及有限元模型,导入ABAQUS6.5-1完成相应有限元分析,采用垂直载荷和斜向载荷,较好地模拟了口腔咀嚼过程.分析结果表明,RPI卡环固位义齿对抗垂直载荷与斜向载荷能力均优于三臂卡环固位义齿;有种植体支持的RPI卡环固位义齿对抗斜向载荷能力优于无种植体支持的RPI卡环固位义齿.

关键词：肯氏I类缺失可摘局部义齿有限元方法生物力学

Design of Energy Saving Control System For Subway Escalators

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Design of Energy Saving Control System For Subway Escalators

2.11 IEEE International Conference on Intelligent Computing and Intelligent Systems(ICIS 2.11)

作者： Xianghua Ma Yinzhong Ye Ping Qian School of Electrical and Electronic engineering shanghai Institute of Technology shanghai 2.02.5 china Mingxu Lu Logistics engineering College shanghai Maritime university shanghai 2.0135 china

＜正＞Subway escalators always run without load or with light load.A new kind of energy saving running operation is proposed in this ***-week running curve as the reference speed of drive motor is obtained according to the past statistic data of passenger *** order to make the most use of the advantages of frequency conversation and energy feedback,Common-DC-bus is introduced to design the energy saving control system in *** analysis shows that the maximum energy can be saved when one-week running curve and common-DC-bus are adopted in escalator.

关键词： Escalator Energy saving One-week running curve Common-DC-bus

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水冷壁高温腐蚀机制及机器人检测技术

上海交通大学学报 2008年第S1期42卷 93-96页

作者：吕学勤刘刚郑小霞吴毅雄上海电力学院信控系上海200090 上海交通大学材料科学与工程学院上海200240

阐述了锅炉水冷壁发生高温腐蚀的机制与条件,介绍了用于火力发电站的锅炉水冷壁检测机器人的发展情况,以及各种爬壁机器人的本体结构、磁路设计及控制系统等。由此得出水冷壁检测机器人能够缩短作业周期、提高电站的经济效益、降低劳动... 详细信息

阐述了锅炉水冷壁发生高温腐蚀的机制与条件,介绍了用于火力发电站的锅炉水冷壁检测机器人的发展情况,以及各种爬壁机器人的本体结构、磁路设计及控制系统等。由此得出水冷壁检测机器人能够缩短作业周期、提高电站的经济效益、降低劳动强度并提高检测精度.

关键词：水冷壁高温腐蚀爬壁机器人

PREPARATION AND PROPERTIES OF Ni-Cr AND Fe-Cr-Al FILMS BY VACUUM EVAPORATION

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 283-288页

作者： X.W. Shi, Z.Y. Liu, B.C. Zeng and CM. LiInstitute of Materials science & Technology, College of Mechanical engineering, South{2. university of Technology, Guangzhou 510640,{2. Inst. of Mat. Sci. and Technol. Coll. of Mech. Eng. South China Univ. of Technol. Guangzhou 510640 China

Ni-Cr and Fe-Cr-Al films deposited on the Al2.3 substrate are studied by a method of vacuum evaporation in this paper. Influence of resistance value on density and evaporation parameters of the films reveals that the resistance of films and the adhesion of films to substrates are determined by the evaporation time and the substrate temperate under the condition of the maximum vacuity of 6.2.10-4 Pa, respectively.

关键词： vacuum evaporation resistance of film vacuity

Multi-epoch X-ray observations of the narrow-line Seyfert 1 galaxy SDSS J160508.87+32.92..4 with XMM-Newton

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science china(Physics,Mechanics & Astronomy) 2010年第S1期53卷 207-211页

作者： AI YanLi1,2.3,YUAN WeiMin1,2.ZHOU HongYan4,5 & WANG JianGuo1,2.3 1 National Astronomical Observatories/Yunnan Observatory,Chinese Academy of sciences,Kunming 650011,china 2.Key Laboratory for the Structure and Evolution of Celestial Objects,Chinese Academy of sciences,Kunming 650011,china 3 Graduate university of the Chinese Academy of sciences,Beijing 100049,china 4 Center for Astrophysics,university of science and Technology of china,Hefei 2.002.,china 5 Joint Institute of Galaxies and Cosmology,SHAO and USTC,shanghai 2.0030,china National Astronomical Observatories/Yunnan Observatory Chinese Academy of Sciences Kunming China Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences Kunming China Graduate university of the Chinese Academy of sciences Beijing China Center for Astrophysics University of Science and Technology of China Hefei China Joint Institute of Galaxies and Cosmology SHAO and USTC Shanghai China

We present results of multi-epoch XMM-Newton observations separated by several years of the narrow-line Seyfert 1(NLS1) galaxy,SDSS J160508.87+*** NLS1 showed X-ray flux variations on timescales of years as well as low amplitude variations on timescales as short as hours,while the X-ray spectral shape remained essentially *** spectrum shows a significant soft X-ray *** model of reflection from an ionized disc,that is dominant in the whole XMM-Newton bandpass,provides the best description of the observed spectra for all the observations,though alternatives such as Compton scattering(T-0.2. keV) cannot be ruled out in a statistical *** the disc reflection model,the observed variations may originate either from the change in the reflection fraction,or from the variability of the intrinsic X-ray luminosity.

关键词： galaxies:active Seyfert X-rays individual

A COMPUTERIZED SYSTEM ON KINETIC ANALYSIS AND EVALUATION OF GAS/SOLID REACTIONS

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 495-506页

作者： J.H. Liu, J. Y. Zhang and S.K. WeiSchool of Metallurgical and Ecological engineering, university of {2. & Technology Beijing, Beijing 100083, china Sch. of Metall. and Ecological Eng. Univ. of Sci. and Technol. Beijing Beijing 100083 China

The present paper presents the structure, features and functions of a computerized system on kinetic analysis and evaluation of gas/solid reactions, KinPreGSR. Kin-PreGSR is a menu driven system, can be operated with MS Windows as workbench in a PC computer. It has been developed using visual C++ with FoxPro hybrid coding technique.KinPreGSR combines the characteristics of gas/solid reactions with the kinetic models as well as mass and heat transfer equations. The database files were established for the apparent activation energies of some reduction and decomposition reactions to allow the prediction of the reaction kinetics to some extents. Outputs can be displayed using graphical or numerical forms. Examples regarding the oxide reduction and carbonate decomposition under isothermal conditions are given to show those functions.

关键词： gas/solid reaction kinetics computer system evaluation anal-ysis

Control of Multi-Agent Formation with Optimally Persistent Graph

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Control of Multi-Agent Formation with Optimally Persistent G...

Chinese Guidelines for the Diagnosis and Management of Atrial Fibrillation

第2.届中国控制与决策会议

作者： Shikai Shao 1 , Xiaoyuan Luo 1 , Tao Jin 2., Xinping Guan 1,3 1. Institute of Electrical engineering, Yanshan university, Qinhuangdao, 066004,{2. 2. College of Mechanical engineering, Yanshan university, Qinhuangdao, 066004,{2. 3. School of Electronic and Electric engineering, shanghai Jiangtong university, shanghai, 2.02.0,{2.

In this paper, a distributed control law for optimally persistent formation of leader-follower multi-agent systems is presented. According to the characteristic of optimally persistent formation, each follower, except the one which follows the leader, can only communicate with its two precedent neighbors. Based on the state information received from neighbors, a scalable gradient-like control law is designed to control the motion of the formation. Through using this control law, any three agents that are not in a line can achieve a stable triangular persistent formation. Extend this implementation to the whole formation, thus each agent will keep desired distance constraints to its two precedent neighbors. Finally, simulation examples are illustrated to show the efficiency of the proposed control law.

关键词： Persistent formation Multi-agent systems Rigid graph Leader-follower

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Journal of Geriatric Cardiology 2024年第3期21卷 251-314页

作者： Chang-Sheng MA Shu-Lin WU Shao-Wen LIU Ya-Ling HAN Chinese Society of Cardiology Chinese Medical Association Heart Rhythm Committee of Chinese Society of Biomedical engineering Beijing Anzhen Hospital Capital Medical University Guandong Provincial People’s Hospital shanghai First People’s Hospital General Hospital of Northern Theater Command 不详

Atrial fibrillation(AF)is the most common sustained cardiac arrhythmia,significantly impacting patients’quality of life and increasing the risk of death,stroke,heart failure,and *** the past two decades,there have been significant breakthroughs in AF risk prediction and screening,stroke prevention,rhythm control,catheter ablation,and integrated *** this period,the scale,quality,and experience of AF management in china have greatly improved,providing a solid foundation for the development of guidelines for the diagnosis and management of *** further promote standardized AF management,and apply new technologies and concepts to clinical practice in a timely and comprehensive manner,the Chinese Society of Cardiology of the Chinese Medical Association and the Heart Rhythm Committee of the Chinese Society of Biomedical engineering have jointly developed the Chinese Guidelines for the Diagnosis and Management of Atrial *** guidelines have comprehensively elaborated on various aspects of AF management and proposed the CHA2.S2.VASc-60 stroke risk score based on the characteristics of AF in the Asian *** guidelines have also reevaluated the clinical application of AF screening,emphasized the significance of early rhythm control,and highlighted the central role of catheter ablation in rhythm control.

关键词： prevention sustained diagnosis

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Vite:一个混合系统建模仿真框架

系统仿真学报 2009年第9期21卷 2562-2566,2585页

作者：赵巍苏明上海交通大学动力机械与工程教育部重点实验室上海200030

提出了一个使用通用平台实现的混合系统仿真框架:Vite。Vite基于方程建模,提取了构成仿真的模型、问题和数值求解器三个抽象,提高了模型的复用性,降低了Vite内部各组成部分的耦合性;使用关联和连接器以组合模型的方式搭建系统,构成系统... 详细信息

提出了一个使用通用平台实现的混合系统仿真框架:Vite。Vite基于方程建模,提取了构成仿真的模型、问题和数值求解器三个抽象,提高了模型的复用性,降低了Vite内部各组成部分的耦合性;使用关联和连接器以组合模型的方式搭建系统,构成系统的模型和方程可以被层次化的管理;用MathML表示方程,用XML表示模型,提高了模型的共享性;设计了模型与求解器的接口,增加了数值解法的选择性。

关键词：仿真框架面向对象基于方程建模数学标记语言可扩展标记语言