简介：Bothnecessaryandsufficientmaximumprinciplesforoptimalcontrolofstochasticsystemwithrandomjumpsconsistingofforwardandbackwardstatevariablesareproved.Thecontrolvariableisallowedtoenterbothdiffusionandjumpcoefficients.Theresultisappliedtoamean-varianceportfolioselectionmixedwitharecursiveutilityfunctionaloptimizationproblem.Explicitexpressionoftheoptimalportfolioselectionstrategyisobtainedinthestatefeedbackform.

简介：我们在场为嵌套问题的一个新算法。许多同等地，spaced点被放在一张表上，并且一片被移动到点之一并且由一个角度旋转了。点和旋转角度组成片的收拾行李的态度。我们建议一个新算法说出HAPE(启发式的算法基于最小的全部的势能的原则)发现片在有最低重心的最佳的收拾行李态度。另外，为多角形重叠测试的一种新技术被建议它避免no-fit-polygon(NFP)的费时间的计算。HAPE的详细实现被介绍，二个计算实验被描述。第一个实验基于一个真实工业问题并且第二在11个出版基准问题上。用一爬山(HC)寻找方法，建议算法与另外的出版答案比较表现很好。

简介：基于集中的离子微笑并且砍磨擦仪器数据，多决定(0.2nm-5m)卷粗糙与粗糙接触(VR与交流)原则上的三维的结构滑动表面接口表面(PSS)在高效上被测量计算站台；并且物理塑料爬磨擦模型被使用混合的超积分方程与格子Boltzmann与格子格林功能(BE-LB-LG)建立。rheological性质和VR与交流进化在下面的关联短暂(10s)宏正常应力(18300MPa)并且滑动率(0.257.5m/s)被获得；并且在co地震的闪光加热的PSS磨擦是量的第一次分析了。

简介：Basedonthetheoryofporousmedia,ageneralGurtinvariationalprinciplefortheinitialboundaryvalueproblemofdynamicalresponseoffluid-saturatedelasticporousmediaisdevelopedbyassuminginfinitesimaldeformationandincompressibleconstituentsofthesolidandfluidphase.Thefiniteelementformulationbasedonthisvariationalprincipleisalsoderived.Asthefunctionalofthevariationalprincipleisaspatialintegraloftheconvolutionformulation,thegeneralfiniteelementdiscretizationinspaceresultsinsymmetricaldifferential-integralequationsinthetimedomain.Insomesituations,thedifferential-integralequationscanbereducedtosym-metricaldifferentialequationsand,asanumericalexample,itisemployedtoanalyzethereflectionofone-dimensionallongitudinalwaveinafluid-saturatedporoussolid.Thenumericalresultscanprovidefurtherunderstandingofthewavepropagationinporousmedia.

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简介：BasedupontheHellinger-Reissner(H-R)mixedvariationalprincipleforthree-dimensionalelasticbodies,themodifiedH-Rmixedvariationaltheoremformagnetoelectroelasticbodieswasestablished.Thestate-vectorequationofmagnetoelectroelasticplateswasderivedfromtheproposedtheorembyperformingthevariationaloperations.Tolayatheoreticalbasisofthesemi-analyticalsolutionappliedwiththemagnetoelectroelasticplates,thestate-vectorequationforthediscreteelementinplanewasproposedthroughtheuseoftheproposedprinciple.Finally,itispointedoutthatthemodifiedH-Rmixedvariationalprincipleforpureelastic,singlepiezoelectricorsinglepiezomagneticbodiesarethespecialcasesofthepresentvariationaltheorem.

简介：Isochronousmassspectrometry(IMS)instorageringsisapowerfultoolformassmeasurementsofexoticnuclewithveryshorthalf-livesdowntoseveraltensofmicroseconds,usingamulticomponentsecondarybeamseparatedin-ightwithoutcooling.However,theinevitablemomentumspreadofsecondaryionslimitstheprecisionofnuclearmassesdeterminedbyusingIMS.

简介：把陈和Hau的理论基于D.P，一个理论方法被介绍分析嘘类型表面的分散特征与一个变化原则和coupling-of-modes在周期的金属性的栅栏结构上宣传的声学的波浪(锯)方程。没有使用复杂格林的功能，方法的精明的结果Hashimoto的理论与那些同意很好。在另一方面，Hashimoto的方法为在ST-90上计算short-circuited栅栏的分散关系是无助的

简介：TostudytheadsorptionbehaviorofCu+inaqueoussolutiononsemiconductorsurface,theinteractionsofCu+andhydratedCu+cationswiththecleanSi(111)surfacewereinvestigatedviahybriddensityfunctionaltheory(B3LYP)andMller-Plessetsecond-orderperturbation(MP2)method.ThecleanSi(111)surfacewasdescribedwithclustermodels(Si14H17,Si16H20andSi22H21)andafour-siliconlayerslabunderperiodicboundaryconditions.CalculationresultsindicatethatthebondingnatureofadsorptionofCu+onSisurfacecanbeviewedaspartialcova-lentaswellasionicbonding.ThebindingenergiesbetweenhydratedCu+cationsandSi(111)surfacearelarge,suggestingastronginteractionbetweenthem.ThecoordinationnumberofCu+(H2O)nonSi(111)surfacewasfoundtobe4.Asthenumberofwatermoleculesislargerthan5,watermoleculesformahydrogenbondnetwork.Inaqueoussolution,Cu+cationswillsafelyattachtothecleanSi(111)surface.

简介：在这份报纸，我们试图把一条统一途径给存在Ekelands的几个版本变化原则。在一致空格的框架，我们通常介绍p距离和更多，q距离。然后，我们介绍完全性的一种新类型一致空格，即，关于q距离的顺序的完全性(特别地，p距离)，它是完全性的一个很广泛的概念。由使用q距离和完全性的新类型，我们证明一条概括Takahashisnonconvex最小化定理，一个概括Ekelands变化原则和概括Caristis修理了点定理。而且，我们证明上述三条定理等价于对方。从概括Ekelands变化原则，我们推出Ekelands原则的很多个特别版本，它包括原则和他们的改进的许多已知的版本。

简介：UnlikethepreviousresearchworksanalyzingthestabilityoftheT-S(Takagi?Sugeno)fuzzymodel,anextensiononthestabilityconditionofT-Sfuzzysystemswithadifferentstrategyisprovided.Inthestrategyanewvariable,whichisrelativetothegradeoffuzzymembershipfunction,isintroducedtothestabilityanalysisandanewstabilityconclusionisdeduced.Thedefinitionofstabilityconditioninthispaperisdifferentfrompreviousworks,thoughtheyaresimilarinform.Withtheproposedmethod,thesimulationinflightcontrollawshowsabettereffectiveness.

简介：在那里存在，这被证明了在垂直的热之间的生气联合由使用线性热力学的狂暴的运输和垂直速度。这结果断言热的垂直部件狂暴的运输流动由垂直潜在的温度梯度的运输和垂直速度的联合运输组成。在这篇论文，垂直的热上的垂直速度的联合效果狂暴的交通被从大气的边界层使用观察数据决定联合系数的十字验证，并且狂暴的交通的一系列重要性质外面被打开。这些性质显示生气联合系数是尺寸的对数功能不太垂直的速度和尺寸更少高度，并且不仅与磨擦速度u*,有关而且到联合粗糙高度zW0和联合温度T垂直速度的W0。另外，仅仅当垂直速度大小遵循限制|W/u*时，功能关系建议那|≠1，并且在水平z然后，垂直速度导致生气联合的W0,垂直的热上的效果狂暴的运输流动。生气联合理论和试验性的结果提供挑战给传统的狂暴的K闭合理论和Monin-Obukhov类似理论。

简介：这份报纸涉及提交向后的问题推迟系统包含的最佳的控制推动控制。作者为这种系统建立一个随机的最大的原则。建议问题的大多数区分的特征是控制变量由常规、冲动的控制组成，与时间延期，并且常规控制的域未必是凸的。作者为最佳的控制获得必要、足够的条件，它在数学金融有潜在的应用。

简介：Anextendedelectronmodelfullyrecoversmanyoftheexperimentalresultsofquantummechanicswhileitavoidsmanyofthepitfallsandremainsgenerallyfreeofparadoxes.TheformulationofthemanybodyelectronicproblemhereresemblestheKohnShamformulationofstandarddensityfunctionaltheory.However,ratherthanreferringelectronicpropertiestoalargesetofsingleelectronorbitals,theextendedelectronmodelusesonlymassdensityandfieldcomponents,leadingtoasubstantialincreaseincomputationalefficiency.Todate,theHohenberg-Kohntheoremshavenotbeenprovedforamodelofthistype,norhasauniversalenergyfunctionalbeenpresented.Inthispaper,weaddresstheseproblemsandshowthattheHohenbergKohntheoremsdoalsoholdforadensitymodelofthistype.Wethenpresentaproof^of^conceptpracticalimplementationofthismethodandshowthatitreproducestheaccuracyofmorewidelyusedmethodsonatest-setofsmallatomicsystems,thuspavingthewayforthedevelopmentoffast,efficientandaccuratecodesonthisbasis.

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简介：Consideringthatatpresenttheregularwavesincommonusehavetheprofilesymmetrizedtoaverticalaxis,whicharedifferentfromactualwind-drivenseawaves,andbasedonderivinglinearwave,solitarywave,fifthorderStokeswaveandstreamfunctionwavebyusingUnifiedVariationalPrincipleofWaterGravityWave(UVPWGW),thispaperderiveswind-drivenslantingprofilewavebyusingUVPWGW.Itsfeatureisthatundertheactionofwindpressure,thewaveprofileisnotsymmetrizedtoaverticalaxis,butthatitisintheforwardslantingform.

简介：Thispaperisconcernedwithanoptimalcontrolproblemofanablation-transpirationcoolingcontrolsystemwithStefan-Signoriniboundarycondition.Asthecontinuationoftheauthors'previouspaper,theDubovitsRii-MilyutinfunctionalapproachisagainadoptedininvestigationofthePontryagin'smaximunprincipleofthesystem.Thenecessaryoptimalityconditionispresentedfortheproblemwithfreefinalhorizonandphaseconstraints.

简介：Spinodalphaseseparationbehaviorofpoly(methylmethacrylate)/poly(styrene-co-acrylonitrile)(PMMA/SAN)blendswasinvestigatedbythetime-resolvedsmallanglelightscattering(SALS)technique.Itwasfoundthattheinfluenceoftemperatureonthescatteringintensityevolutionfollowedthetime-temperaturesuperpositionprinciple.TherelationshipbetweentemperatureandtherelaxationtimeofscatteringintensityI(t)canbewelldescribedbytheWilliams-Landel-Ferry(WLF)function.

简介：Basedonthephasediagrams,measuredactivitiesandtheannexationprinciple,thecalculatingmodelsofmassactionconcentrationsforIn-Pb-AgandIn-Bi-Sbternarymetallicmeltshavebeenformulated.Theresultsofcalculationbothagreewithpractice,andobeythelawofmassaction,showingthatthemodelsformulatedcanreflectthestructuralrealityofthecorrespondingmeltsandtheannexationprincipleisapplicabletothethem.

简介：摘要A recent epidemic of pneumonia cases in Wuhan China was caused by a novel coronavirus with strong infectivity, the 2019 novel coronavirus (2019-nCoV). The article provides the pulmonary rehabilitation (PR) methods in the principle of 4S (simple, safe, satisfy, save) for patients with pneumonia caused by the novel coronavirus, shows how to establish a ventilative and convectional PR environment to prevent the spread of virus through droplets, how to guide the patients to carry out PR, how to carry out respiratory muscle training, effective cough, expectoration, sneeze, general exercise, digestive function rehabilitation and psychological rehabilitation, and how to clean and disinfect the PR environment.