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һ һ   ڶ       ڰ ھʮ11 ǰһ


ѵ11ƪ

IψDѪҺѭhϵyӋCеđ
^ȫՈc朽
ע⣺ՓڡtW̌W19991l
ʹՈעՓij̎

     ܊
BW Cеϵ| B   116024

 ժҪwϵyͬwϵyеIψDģwѪҺѭhϵyӋC殔һwѪҺѭhϵyģM˷о÷攵ͬҎɷ^tWṩһNͽyһĽģ
PI~IψDӋC桡ѪҺѭhϵy

Use of power band graph method in the computer simulation of blood circulation system

FENG Yu-junTIAN Shu-jun

 ( Dep. of Mech. Eng.Dalian Univ. of Technol.Dalian 116024P.R.China)

Abstract The power band graph (PBG) method is a convenient system dynamic modeling method, which is used successfully in fluid system dynamic character simulation. As there are many similarities to a great extent between biological fluid system and engineering fluid system, according to fluid dynamic theory, this paper use the PBG approach in the computer simulation of human blood circulation systemand complete a modeling and simulation study on a simplified human blood circulation system model. The results of the simulation are in good agreement with the basic physiological law. The study provides a simple and unitary simulation modeling method for physiologic medical simulation.
Key words: Power Band Graph Method , Computer Simulation  , Blood Circulation System


ѵ12ƪ

IψDڶ֧ѪҺѭhϵyģͷеđо
^ȫՈc朽
 ע⣺ՓڡtW̌W20006181l
ʹՈעՓij̎

1  ܊2 ֺ3

1. BW WԺ| B 116024

2. BW Cеϵ| B 116024

3. BtԺ| B 116033

 

ժҪùIψDһN֧ѪҺѭhϵyӋCģѪҺѭhϵyѪW׃׃ҎɵĠBԓģ^鼚µؿ̮ѪҺѭhϵyγ^wѪҺѭhϵyӋCģģͿģMѪҺѭhϵyͲóѪ܄W攵ͲMѪҺѭhϵyͲtWоṩµоֶ
PI~ѪҺѭhϵyӋC桡IψD
̖
TH 1371

Study of Modeling and Simulation of the Multi-branch Blood System

FENG Yu-jun1 , TIAN Shu-jun2 , LIN Hai-long3

                    1. School of Manage., Dalian Univ. of Technol., Dalian 116024, P. R. China;
                   2. Dep. of Mech. Eng., Dalian Univ. of Technol. Dalian 116024, P. R. China;
                   3. Dalian Cent. Hosp., Dalian 116033, P. R. China 

Abstract : By the Power Band Graph (PBG) method, a computer simulation model of the multi-branch blood circulation system is presented, which describes the blood fluid dynamic law in the blood system by the state equation. a minute description is gived by the modelon physiological characters of blood circulation system (BCS). An integrated computer model on BCS has been established. The model can simulate physiological characters of blood circulation system, and get the simulation data and curves of BCS hemodynamics varibles.  the model can be used widely in the field of physiological system simulation study, the medical study and medical aid education.
Key words
: Blood Circulation System ,  Computer Simulation  , Power Band Graph Method


ѵ13ƪ

ԭg
^ȫՈc朽
ע⣺ՓڡCе졷(2000,38(428):11-13)l
ʹՈעՓij̎

O
BW
Cеϵ| B116024)   

 

ժ Ҫ   gһN÷dzVdgڿԭоҪĽBԭ󹤳ϵyĽYwϵyԼĔֶָ̎˴ڵĆ}ͽİlչ
PI~
 󹤳  ԭ y ̎

Reverse Engineering RPM-oriented

 Sun Yuwen
Dalian University of  Technology  Dalian , P. R. China(116024)   

AbstractReverse engineeringa newly developed and widely used techniquehas important application in rapid prototyping manufacturingThis paper discusses chiefly its structure systemmeasure methods and data processing techniquesAlsoin this paperpractical problems and future development trends of reverse engineering are mentioned
Key words
reverse engineering  RPM  measure  data processing

 


ѵ14ƪ

The zero curvature representation for hierarchies of nonlinear evolution equations
dӢZՓȫՈc朽
ע⣺ՓڡPhysics Letters A2000274135-142l
ʹՈעՓij̎

(SCI䛱)

F
͵W Ϻ   200433

ժҪ:ֱV}l÷ݶ҂oǾԷʱʾһNη

The zero curvature representation for hierarchies of nonlinear evolution equations

Engui Fan
 Physics Letters A 274 2000 135C142

Institute of Mathematics, Fudan Uniersity, Shanghai 200433, PR China

Received 13 July 2000; received in revised form 1 August 2000; accepted 16 August 2000

Communicated by A.R. Bishop

Abstract:. Directly starting from the spectral problem c s U u, l cand with help of functional gradient, a simple method is x proposed for constructing zero curvature representation of the hierarchies of nonlinear evolution equations. q2000 Elsevier Science B.V. All rights reserved.
Keywords:
Nonlinear evolution equation; Zero curvature representation; Lenard operator pairs


ѵ15ƪ

Two new applications of the homogeneous balance method
dӢՓȫՈc朽
ע⣺ՓڡPhysics Letters A2000277212-218l
ʹՈעՓij̎
(SCI䛱)
F
͵W    200433

ժҪ:҂oRƽⷨɂµđҷǾԷ̵Backlund׃QƽYcCKWTCĽYһ

Two new applications of the homogeneous balance method

Engui Fan )
 Physics Letters A 265 2000 353C357

Institute of Mathematics, Fudan Uniersity, Shanghai 200433, China

Received 13 July 1999; received in revised form 3 December 1999; accepted 22 December 1999

Communicated by A.R. Bishop

Abstract:The homogeneous balance method is extended to search for Backlund transformation and similarity reduction of nonlinear partial differential equations. It is shown that there exist close connections among the homogeneous balance method, WTC method and CK direct reduction method. The variant Boussinesq equations are discussed as an illustrative example. Their Backlund transformation, linearization transformation and three types of similarity reductions are obtained. In the meantime, some new travelling wave solutions also are found. q2000 Published by Elsevier Science B.V. All rights reserved.
Keywords: Homogeneous balance method; Backlund transformation; Similarity reduction; Travelling wave solution


ѵ16ƪ

Extended tanh-function method and its applications to nonlinear equations
dӢՓȫՈc朽
ע⣺ՓڡPhysics Letters A2000277212-218l
ʹՈעՓij̎

(SCI䛱)

F
͵W Ϻ   200433

 ժҪ҂oһNVxTanhڵõǾԷ̶NвȤһķ̖ДвΠ͔
PI~

Extended tanh-function method and its applications to nonlinear equations

Engui Fan
Physics Letters A 277 (2000) 212C218

Institute of Mathematics, Fudan University, Shanghai 200433, PR China

Received 26 July 2000; received in revised form 25 October 2000; accepted 25 October 2000

Communicated by C.R. Doering

Abstract:An extended tanh-function method is proposed for constructing multiple travelling wave solutions of nonlinear partial differential equations (PDEs) in a unified way. The key idea of this method is to take full advantages of a Riccati equation involving a parameter and use its solutions to replace the tanh function in the tanh-function method. It is quite interesting that the sign of the parameter can be used to exactly judge the numbers and types of these travelling wave solutions. In addition, by introducing appropriate transformations, it is shown that the extended tanh-function method still is applicable to nonlinear PDEs whose balancing numbers may be any nonzero real numbers. Some illustrative equations are investigated by this means and new travelling wave solutions are found. 
Keywords:
Nonlinear partial differential equation; Travelling wave solution; Riccati equation; Symbolic computation


ѵ17ƪ

Soliton solutions for a generalized HirotaCSatsuma coupled KdV equation and a coupled MKdV equation
dӢZՓȫՈc朽
 ע⣺ՓڡPhysics Letters A200128218-22l
ʹՈעՓij̎
(SCI䛱)

F
͵W Ϻ   200433

ժҪÏVxTanh҂քeoˏVxHS̺MKVķNӽ
PI~

Soliton solutions for a generalized HirotaCSatsuma coupled KdV equation and a coupled MKdV equation

Engui Fan
Physics Letters A 282 (2001) 18C22

Institute of Mathematics, Fudan University, Shanghai 200433, PR China

Received 20 November 2000; received in revised form 22 February 2001; accepted 23 February 2001

Communicated by A.R. Bishop

Abstract:We make use of an extended tanh-function method and symbolic computation to obtain respectively four kinds of soliton solutions for a new generalized HirotaCSatsuma coupled KdV equation and a new coupled MKdV equation, which were introduced recently by Wu et al. 
Keywords:
Coupled MKdV equation; Soliton solution; Riccati equation; Symbolic computation


ѵ18ƪ

Gerjikov-Ivanov ̵Darboux׃Q͹ӽ
dӢՓȫՈc朽
ע⣺ՓڡJOURNAL OF PHYSICS A: MATHEMATICAL AND GENERAL2000336925C6933l
ʹՈעՓij̎

(SCI䛱)

F
͵W    200433

 ժҪV}Ҏ׃QͼsGerjikov-Ivanov ̵NDarboux׃QɴõGerjikov-Ivanov ̵Ćιӽpӽ
PI~
Gerjikov-Ivanov Darboux׃Qӽ

Darboux transformation and soliton-like solutions for the GerdjikovCIvanov equation

Engui Fan
JOURNAL OF PHYSICS A: MATHEMATICAL AND GENERAL. 33 (2000) 6925C6933.

Institute of Mathematics, Fudan University, Shanghai 200433, PR China

Received 27 April 2000

Abstract. An explicit N -fold Darboux transformation with multiparameters for a kind of coupled derivative nonlinear Schr odinger equation is constructed with the help of a gauge transformation of a spectral problem. As a reduction, a Darboux transformation of the GerdjikovCIvanov equation is obtained. Furthermore, the explicit soliton-like solutions of the GerdjikovCIvanov equation are given by applying its Darboux transformation.


ѵ19ƪ

Schrodingerͷ弰HamiltonY
dӢZՓȫՈc朽
ע⣺ՓڡJOURNAL OF PHYSICS A: MATHEMATICAL AND GENERAL200134513-519l
ʹՈעՓij̎

(SCI䛱)

F
͵W Ϻ   200433

 ժҪһV}ɴˌһSchrodingerͷCԓLiouvillex¿ɷeжHamiltonYlFķKNCLLGISTO ̵ļsԓ؄eõKNCLLGILaxHamiltonYĽyһ@ʽʽ
PI~
HamiltonYLiouvilleɷe

Integrable systems of derivative nonlinear Schr odinger type and their multi-Hamiltonian structure

Engui Fan
JOURNAL OF PHYSICS A: MATHEMATICAL AND GENERAL. 34(2001), 513-519

Institute of Mathematics, Fudan University, Shanghai 200433, PR China

Received 1 September 2000, in final form 6 December 2000

Abstract:A spectral problem and the associated hierarchy of Schr odinger type equations are proposed. It is shown that the hierarchy is integrable in Liouvilles sense and possesses multi-Hamiltonian structure. It is found that several kinds of important equation such as the KaupCNewell (KN) equation, the ChenCLeeCLiu (CLL) equation, the GerdjikovCIvanov (GI) equation, the modified KortewegCde Vries equation and the SharmaCTassoCOlever equation are members in the hierarchy as its special reductions. Moreover, KN, CLL and GI equations are described by using a unified generalized derivative Schr odinger equation involving a parameter, and their Hamiltonian structure and Lax pairs are also given by unified and explicit formulae.


ѵ20ƪ

vʽ΢늙Cо
dՓȫՈc朽
ע⣺ՓڡЇCе̡(2001,12(6):704-706)l
ʹՈעՓij̎

     
(BWCеϵB116024)

ժҪ˿vʽ΢늙CәC늙Cӱ۵OӋֱ5mmĿvʽ΢늙CMˌо
PI~ vʽ΢늙C әCOӋҎt

Research on Micro Piezoelectric Motor Driven by Longitudinal- Transverse Vibration Cantilevers

Shao Peige  Wang Liding
(Dalian Uni. of Technology Mechanical Engineering, Dalian, China, 116024)

Abstract: The driving mechanism of a micro motor is analyzed and the design method of driving is presented. A f5mm of piezoelectric micro motor driven by longitudinal-transverse vibration cantilevers is developed and experimental researches are carried out on it.
Key Words: longitudinal- transverse vibration piezoelectric motor, Driving Mechanism, Design role


һ һ   ڶ       ڰ ھʮ11 ǰһ

 

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