简介：WeproposeanapplicationoftheelasticneuralnetforringrecognitioninRICHdetectors.Themethodhasbeendevelopedtofindringsdistortedduetomisalignmentofdetectorsandcontaminatedbynoise.ThealgorithmwastestedonsimulateddataofCOMPASSRICH-1detector.Reconstructionefficiencyis99.95%fortripleLEPTOeventstaking5msperevent.

简介：Forthepurposeofachievinghigh-resolutionoptimalsolutionsthispaperproposesanodaldesignvariablebasedadaptivemethodfortopologyoptimizationofcontinuumstructures.Theanalysismesh-independentdensityfield,interpolatedbythenodaldesignvariablesatagivensetofdensitypoints,isadaptivelyrefined/coarsenedaccordingtoacriterionregardingthegray-scalemeasureoflocalregions.Newdensitypointsareaddedintothegrayregionsandredundantonesareremovedfromtheregionsoccupiedbypurelysolid/voidphasesfordecreasingthenumberofdesignvariables.Apenalizationfactoradaptivitytechniqueisemployedtopreventprematureconvergenceoftheoptimizationiterations.Suchanadaptiveschemenotonlyimprovesthestructuralboundarydescriptionquality,butalsoallowsforsufficientfurthertopologicalevolutionofthestructurallayoutinhigheradaptivitylevelsandthusessentiallyenableshigh-resolutionsolutions.Moreover,comparedwiththecasewithuniformlyandfinelydistributeddensitypoints,theproposedadaptivemethodcanachieveahighernumericalefficiencyoftheoptimizationprocess.

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简介：Wepresentacrust-basedprocedureformodelinghumanbeing’sbone,whichisbasedonvoronoidiagramanditsdual,Delaunaytriangulation.Inthree-dimensionalspace,thecrustalgorithmcangeneratea3D-modelusingasetofsamplepoints.ThepurposesofthispaperistoextractprecisecontourfromCTseries,thenrefertothesecontoursassamplepoints,andthenapplythecrustalgorithmtothesesamplepointstogetthreedimensionalmesh.

简介：AmutuallyorthogonalsystemofrationalSomeapproximationresultsareestablishedfunctionsonthewholelineisintroduced.Asanexampleofapplications,amodifiedLegendrerationalspectralschemeisgivenfortheDiracequation.Itsnumericalsolutionkeepsthesameconservationasthegenuinesolution.Thisfeaturenotonlyleadstoreasonablenumericalsimulationofnonlinearwaves,butalsosimplifiestheanalysis.Theconvergenceoftheproposedschemeisproved.Numericalresultsdemonstratetheefficiencyofthisnewapproachandcoincidewiththeanalysiswell.

简介：Inthispaper,theminimaldissipationlocaldiscontinuousGalerkinmethodisstudiedtosolvetheellipticinterfaceproblemsintwo-dimensionaldomains.Theinterfacemaybearbitrarysmoothcurves.ItisshownthattheerrorestimatesinL2-normforthesolutionandthefluxareO（h2｜logh｜）andO（h｜logh｜^l/2）,respectively.Innumericalexperiments,thesuccessivesubstitutioniterativemethodsareusedtosolvetheLDGschemes.Numericalresultsverifytheefficiencvandaccuracvofthemethod.

简介：Tounderstandthemooringenergyduringpositioning,theexpressionsoffouritemsconcerningmooringlineenergyarepresentedbasedonafiniteelementmodel,includinggravitationalandelasticpotentialenergy,kineticenergyanddissipatedenergyduetomooring-induceddamping.Inastaticcase,theforcecalculatedfromthederivativeofpotentialenergywithrespecttodistanceiscomparedwiththatofdirectcalculation.Theresultsarefoundfitwell,whichindicatesthelawofconservationofenergyandalsoshowsthecorrectnessofthepotentialenergyresults.Forthecasesofasinglemooringlinewiththeattachmentpointoscillatingwithdifferentamplitudesinhorizontalorverticaldirection(correspondingtosurgeandrollmotionsrespectively),andthecaseofthemooringlinewithahorizontalbichromaticoscillationontheattachmentpoint,thetimehistoryofthefirstthreeitemsarecalculatedandanalyzed,also,theindicatordiagramformooring-induceddampingaregiven.Theseresultsrevealtheenergystateofthemooringlineandcanprovideabetterunderstandingofhowthemooringlineworks.

简介：Basedonalevelsetmodelandthehomogenizationtheory,anoptimizationalgorithmforfindingtheoptimalconfigurationofthemicrostructurewithspecifiedpropertiesisproposed,whichextendscurrentresearchonthelevelsetmethodforstructuretopologyoptimization.ThemethodproposedemploysalevelsetmodeltoimplicitlydescribethematerialinterfacesofthemicrostructureandaHamilton-Jacobiequationtocontinuouslyevolvethematerialinterfacesuntilanoptimaldesignisachieved.Meanwhile,themovingvelocitiesoflevelsetareobtainedbyconductingsensitivityanalysisandgradientprojection.Besides,howtohandletheviolatedconstraintsisalsodiscussedinthelevelsetmethodfortopologicaloptimization,andareturn-mappingalgorithmisconstructed.Numericalexamplesshowthatthemethodexhibitsoutstandingflexibilityofhandlingtopologicalchangesandfidelityofmaterialinterfacerepresentationascomparedwithotherconventionalmethodsinliteratures.

简介：Anintervaloptimizationmethodforthedynamicresponseofstructureswithintervalparametersispresented.Thematricesofstructureswithintervalparametersaregiven.Combiningtheintervalextensionwiththeperturbation,themethodforintervaldynamicresponseanalysisisderived.Theintervaloptimizationproblemistransformedintoacorrespondingdeterministicone.Becausethemeanvaluesandtheuncertaintiesoftheintervalparameterscanbeelecteddesignvariables,moreinformationoftheoptimizationresultscanbeobtainedbythepresentmethodthanthatobtainedbythedeterministicone.Thepresentmethodisimplementedforatrussstructure.Thenumericalresultsshowthatthemethodiseffective.

简介：Thetransformationmethodtocontrolwaveshasreceivedwidespreadattentioninelectromagnetismandacoustics.However,thismachineryisnotdirectlyapplicabletothecontrolofelasticwaves,becauseithasbeenshownthattheNavier’sequationdoesnotusuallyretainitsformundercoordinatetransformation.Inthisletter,weprovetheforminvarianceoftheNavier’sequationundertheconformalmappingbasedontheHelmholtzdecompositionmethod.Theneededmaterialparametersareprovidedtomanipulateelasticwaves.Thevalidityofthisapproachisconfirmedbyanactivestealthdevicewhichcandisguisethesignalsourcebychangingitsposition.Experimentalverificationsandpotentialapplicationsmaybeexpectedinnondestructivetesting,structuralseismicdesignandotherfields.

简介：Inthispaper,thespatiallinearitymethodisappliedtosyntheticalprocessingofprecursorydatafromdifferentstationsanddifferentdisciplines.Thenewcharacteristicvalue(a)obtainedcandescribethewholeprecursoryfield.Theauthorspresenttheformulasforcalculatingspatiallinearity.Furthermore,thespatiallinearitymethodisappliedtoprocessingofgeoelectricalresistivityandgroundwaterleveldatafrom1970to1994inNorthChina.Theresultsshowthatthenewcharacteristicvalue(a)coulddetecttheanomaly1yearbeforemoderatelystrongearthquakes.

简介：ItisprovedinthispaperthattheapproximatesolutionofthediscontinuousGalerkinmethoddoesconvergeeventheexactsolutionofthefirstorderhyperbolicequationisdiscontinuous.

简介：Inthisarticle,effectivefingerpressuremethodsforthetreatmentofinfantileindi-gestionwereintroduced,whichincludebackfingerknockingmethod,Jiajipointspressingmethodandabdomenfingerpressingmethod.64caseshavebeenobserved.Amongthem,cured:43cases,significantlyimproved:12cases.Thetotaleffectiverate:98.4%.Theresultsshowedthatfingerpressuremethodisaneffectiveexternaltreatmentmethodwhichhasthecharacteristicsofsimplicity,nodamage.Thismethodcanbewidelyacceptedbychildren.

简介：Selfscanningphotodiodearray(SSPA)isakindofsolidstateimagingsensor.ThesignalprocessingmethodusingaspecialsectorSSPAwasinvestigated.BasedontheprincipleandcharacteristicsofSSPA,asignalacquisitionandprocessingmethodcontrolledbycomputerwasintroduced.Theamplificationofweaksignal,thematchingoftimesequence,thefastpeakholdingwithlowleakage,thehighspeedA/Dconversionandnonlinearcorrectionwerediscussed.ThismethodcanacquirethepeaksignalofeveryringofsectorSSPAwithhighaccuracyandinrealtime.Itcanbeusedtodetectthedistributionofspacelightenergy.

简介：Thisreportdescribesanewmethod,theself-searchingmethod,tofindeigenraysinanoceanwherethereisathree-dimensionalsoundspeedperturbationblobonauniformsoundspeedbackground.Comparedwiththetraditionalshootingmethod,thismethodcanreducethenumberofraycalcula-tionsbyabouttwoordersofmagnitude,andaneigenraycanbefoundbycom-puterprogramwithoutmanualintervention.

简介：preconditioned结合坡度deconvolution方法联合稀少的deconvolution和最佳的preconditioned的实现结合坡度方法转换到思考系数。这个方法能提高地震数据处理的频率并且拓宽有效频率带宽。就地震信号的变化时间的性质而言，我们在deconvolution期间用多尺度的变化时间的小浪代替经常的小浪。数字测试证明这个方法能获得好申请结果。

简介：Inthispaper,accordingtotheformoftheasymptoticsolutionofpapers[1,2],theasymptoticmethodisextendedtothefollowingaclassofmoregeneralstrongnonlinearvibrationsystems(?)+g(x,(?))=(?)f(x,(?))(0.1)wheregandfarethenonlinearanalytical-functionsofxandx,and(?)>0isasmallparameter.Weassumethatthederivativesystemcorrespondingto(?)=0hasperiodicsolution.Therecurrenceequationsoftheasymptoticsolutionforthesystem(0.1)arededucedinthispaper,andtheyareappliedtopracticalexamples.

简介：一个精确、有效的微分照时间元素方法(DQTEM)为解决平常的微分方程(颂诗)被建议，DQTEM的数字驱散和分散比single/multi步的直接集成方法的小得多。当导出时，强加起始的条件的二个方法被给，它避免沉闷起始的条件被强加，并且数字比较显示第一个方法，在哪个起始的排水量和速度的模拟方程被用来直接代替微分照(DQ)颂诗在的模拟方程第一并且分别地，采样削尖的最后比第二个方法更精确，在哪个起始的条件ar的DQ模拟方程相反策划到常规一步一步的直接集成，解决方案根本，采样点能被DQTEM同时获得，并且通常，一个微分照时间元素可能是足够的为自始至终域。广泛的数字比较验证建议方法的效率和精确性。

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