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交通大學理學院個別研究群子計劃非線性動態學與生物物理(NonlinearDynamicsandBiologicalPhysics)『邁向頂尖大學』
NonlinearDynamicsandBiologicalPhysics主持人:石至文(Chih-WenShih,NCTU-AppliedMath)參加人員:莊重(JonqJuang,NCTU-AppliedMath)李明佳(Ming-ChiaLi,NCTU-AppliedMath)張正宏(Cheng-HorngChang,NCTU-Physics)林榮信(Jung-HsinLin,NTU-Pharmacy)來穎誠(Ying-ChengLai,ArizonaState-Physics)
ExpertiseJonqJuang,Chih-WenShih,Ming-ChiaLi:
DynamicalsystemtheoryandapplicationsCheng-HorngChang
NonlinearsciencesanditsapplicationsinSpintronics,Quantumchaos,Biologicalmotors.Jung-HsinLin
Moleculardynamics,ComputationaldrugdesignYing-ChengLai(Fellow,AmericanPhysicalSociety)
Nonlineardynamics,Networks
(1)Developdynamicalsystemtheorythataremoreapplicabletocertainbiologicalandphysicalproblems(2)Seekforsignificantandinterestingproblemsinbiologicalphysics,e.g.
TumorgrowthmodelsCellmotilitymodelsMetabolic
insulin
signalingmodelsMoleculardynamicssothatinvestigationswithmathematicalanalysisanddynamicalsystemtheorycancontributetowardresolutionofthecorrespondingproblemsinthemodelequations.Missionandobjectives:
Developdynamicalsystemtheorythataremoreapplicabletocertainbiologicalandphysicalproblems.Toconductacross-disciplinaryresearchonMathematicalBiologyandBiologicalPhysics,withexpertiseinmathematicalanalysis,nonlineardynamicsandscientificcomputations.Weareespeciallyinterestedinmathematicalmodelsontumorgrowth,cellmotility,biologicalmotors,andprotein‐protein
interactionnetwork.TheoryonNonlinearDynamicsisthemainmethodologyintheseinvestigations,althoughtheconsideredproblemsseemdiversified.
MathematicalModelingandScientificComputationsTheNCTU-AMdepartmentisplanningtoestablishTheGraduateInstituteof
MathematicalModelingandScientificComputations
(Pre-approvedbytheCollegeofScience)Thepresentprojectaimstoignitetheresearchcollaborationsalongthelineofmodelingandcomputationsamongvariousdisciplines,startingfromthepointofNonlinearDynamics.ResearchProjectsMoreprecisely,ourfirstprojectistoapplyourtechniquesindiscrete-diffusionequations[PhysicaD2005]tothefollowingmodelsgovernedbyreaction-diffusionequations.(i)Spatio-temporalpatternformationonsolidtumorgrowthmodels(ii)Cellmotilitymodelsdescribingcellcrawling.OtherprojectsincludeRatchetmodelsusingdrivingforcesgeneratedbydeterministicchaoticmaps,spatialandtemporalsymmetrybreakingwhichinducesdirectedtransport,ratchetmechanismonbiologicalmotors,dynamicsonscalefreenetworks,etc.OurresearchCompletestability,multistability,inrecurrentneuralnetworksChaoticdynamics–applicationtoglobalsearchingabilityofcombinatorialoptimizationproblemsPatternformationsindiscretediffusionsystemsRatchetmodelsusingdrivingforcesgeneratedbydeterministicchaoticmapsStochasticresonanceinabiologicalmotorundercomplexfluctuation
DynamicsonscalefreenetworksCompletestability,ConvergenceofdynamicsAuniqueequilibriumtowhicheverythingconvergesEveryorbitconvergestooneoftheequilibriumpointsMulti-stabilityindelayedneuralnetworks
[Shih,et.al.SIAM-AppliedMath.,2006]Patternsformationsin
discretediffusionsystems[Shih,et.al.PhysicaD,2005]Reactiondiffusionsystems
ApplicationofchaosinsolvingTSP[Shihet.al.,Transversalhomoclinicorbitsinatransientlychaoticneuralnetwork,Chaos2002]OptimalrouteCostfunctionIterationaxisCostvalueProjectto2-dimOrderaxisCityaxisSolvingTSPviaTCNN
SomepublicationsbyC.-H.ChangStochasticresonanceinabiologicalmotorundercomplexfluctuation,Phys.Rev.E69,021914(2004).Spintransmissionthroughquantumdotswithstrongspin-orbitinteraction,Phy.Lett.A2004.Spinrelaxationdynamicsofquasiclassicalelectronsinballisticquantumdotswithstrongspin-orbitcoupling(cond-mat/0405212)Transferoperatorapproachonthree-dimensionalquantumbilliardswithSO(2)symmetry,
Phys.Rev.E67,046201(2003)TruncationandresetprocessonthedynamicsofParrondo'sgames,Phys.Rev.E67,025101(2003).ProblemstoinvestigateSolidtumorgrowthmodelsMetabolic
insulin
signaling
pathwaysmodels
(raisedbyJ.SLin)Cellularmotionsandthermalfluctuation(theBrownianratchet)(raisedbyC.H.Cheng)Complexnetworkandothers(raisedbyY.C.Lai)國家理論科學研究中心數學組
TheNCTS–Mathdivision
WorkshopofMathematicalModelsandProblemsinCellMotilityandTumorGrowth
Jan11-19,
2006
Atumorgrowthmodel
Spatio-temporalpatternformationonsphericalsurfaces:numericalsimulationandapplicationtosolidtumorgrowth[Chaplain,et.al,J.Math.Biol.42,387–423(2001)J.MathematicalBiology]Atumorgrowthmodel(continued)Tumorcellssecretegrowth-promotingfactorsThegrowthinhibitoryfactorandnutrientdistributionscompetetocontrolthetumorcellproliferationandthereforeultimatelythesizeofthetumor.Thepredictedspatiallyheterogeneoussteady-statesofthesetwochemicalscorrespondtoobservedregionsofcellularheterogeneityinactualsolidtumors.Atumorgrowthmodel(continued)UseTuring’spre-patterntheorytostudythegrowthandinvasionoftumorsExperimentalresultshavedemonstratedthattumorcellssecretebothgrowthinhibitingandgrowth-activatingchemicalsinanautocrinemannerandthatthebalanceandinteractionbetweenthesefactorsplayanimportantroleinthedevelopmentandprogressionoftumors.At爆umo点rg级row庄th集mod倍el(co泰nti俯nue松d)Syst博emo悉fre质acti唐on-d读iffu绪sion膛equ起atio贸nso啦nth雨esu法rfac愁eof祝as写pher边eu:co例ncen颜trat鱼ion暮ofg炼rowt贝h-pr膨omot箩ing报fact低orv:c捏onc央ent燃rat扭ion偏of喇gr末owt叼h-i根n
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