简介：在非通用的条件下面发生在平面快慢的系统的虚报现象被调查。什么时候批评歧管让非通用的褶层指由使用分析与最近发达的发作技术相结合的asymptotic的方法，一张虚报的存在被建立，一张虚报为存在的参数的asymptotic扩大被获得。

简介：Inthelasttwoorthreedecades,physicalactivity(PA)hasgainedincreasingrecognitionasbeingessentialformaintaininggoodhealthandimprovingqualityoflifeforallages.Childrenhavetraditionallybeenactiveinbothfreeplayandorganizedsports.However,therehasbeenarecentdeclineinthePAlevelsamongchildrenforvariousreasons.Thislifestylechangehasresultedinincreasedobesityaccompaniedbyariseindiabetesandcardiovascularriskamongotherwisehealthychildren.Theselifestylechangeshavebeenshowntobeevenmoreaproblemwhenthechildisalreadyaffectedbyachronicdisease.Duetomedicallimitationsandcontraindications,muchcaremustbetakentomakecertainthatthesechildrenareinvolvedintheappropriatevolumeandintensityofexercise.Thetypeofactivitymustalsobegivencarefulconsiderationtoavoidundueriskforthechildwhomayhaveproblemssuchaspoorbalance,limitedstrength,poorvision,orcognitivedisability.FurthercomplicationsareeithercausedorexacerbatedbylackofsufficientPA.Theprioritybeyondconcernforsafetyshouldbefocusedonensuringthehighestqualityoflifepossible.ThepurposeofthisreviewistoexaminehowPAcanbenefitchildrenwithselectedchronichealthconditions.

简介：Theresultsofmathematicalmodellingofunsteadyflowconditionscoupledwithspecificsedimenttransportrelationsarepresentedhere.SimultaneoussolutionsofthedeSaintVenantequationswiththreedifferenttransportrelations,namelytheEngelund-Hansenequation,Grafequation,andanempiricalequationarepresented.TheresultsobtainedwerecomparedwiththosefromtheFluvial-12programunderthesameinputconditionsandreasonablecorrelationwasobserved.Theadvantagesofthecoupledmethodforsimultaneoussolutionoftheequationscompriseahigherdegreeofaccuracy,thepossibilityofintroductionofanydesiredtransportequationintothemodelandthepossibilityofintroducinganyboundaryconditionsintothemodelalongsideacompleteunsteadyflowmodelling.

简介：Applyingconstructedhomotopyanditsproperties,wegelsomesufficientconditionsforthesolvabilityofalgebraicinverseeigenvalueproblems,whicharebetterthanthatofthepaper[4]insomecases.Inverseeigenvalueproblems,solvability,sufficientconditions.

简介：1IntroductionH-matriceshaveimportantroleinnumericalanalysisandmatrixtheory,etc.Inthispaper,severalpracticalcriteriaforH-matricesareobtained,towhichthematrixisnotnecessarybeadiagonallydominantmatrix,andthenumbersofrowswhicharenotdiago-naldominantcanben-1.Weintroducetheconceptofα-diagonallydominantmatrix,andbyusingtheconcepttoinvestigateH-matrices.

简介：在现在的纸，我们考虑椭圆形的方程与非线性并且类型的nonhomogeneous罗宾边界条件{-div(B(x,u)u)=fin,u=0onoB(x,u)un+(x)h(u)=gon1

简介：Thispaperisconcernedwiththeglobalboundednessproblemforaclassofstochasticnonlinearsystemswithmatchedconditions.Theuncertaintiesinthesystemsareduetoparametervariationsandexternalstochasticdisturbance.Onlythematchedconditionsandthepossibleboundoftheuncertaintiesaredemanded.BasedonthestochasticLyapunovstabilitytheory,anexplicitcontrollerisconstructedinthegradientdirection,whichrendersresponsesoftheclosed-loopsystemsbegloballyboundedinprobability.Whenthesystemsdegradetolinearsystems,thecontrollerbecomeslinear.Illustrativeexamplesaregiventoshowtheeffectivenessoftheproposedmethod.

简介：ＡＮＥＷＤＥＴＥＣＴＩＮＧＭＥＴＨＯＤＦＯＲＣＯＮＤＩＴＩＯＮＳＯＦＥＸＩＳＴＥＮＣＥＯＦＨＯＰＦＢＩＦＵＲＣＡＴＩＯＮＳＨＥＮＪＩＡＱＩ（沈家骐）；ＪＩＮＧＺＨＵＪＵＮ（井竹君）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＳｈａｎｄｏｎｇＵｎ...

简介：EDITOR'SNOTE:FollowingisacollectionofnewsreportsaboutChina'shumanrightsconditions,whichwehopewillhelpreadersknowinwhatwaysChinahasbeentryingtopromoteitshumanrightscause.

简介：InthispaperwegivetheexistenceofmildsolutionsforsemilinearCauchyproblemsu′(t)=Au(t)+f(t,u(t)),t∈I,a.e.withnonlocalinitialconditionu(0)=g(u)+u_0whenthemapglosescompactnessinBanachspaces.

简介：<正>Thisnoteisdevotedtothestudyofthestochasticcomparabilityofjumpprocesses.Onthebasisof[2]and[3],itisprovedthattwojumpprocessesarestochasticallycomparableifandonlyiftheirq-pairsarecomparable.Meanwhile,theresultconcerningtheuniquenessgivenin[6]isalsoimprovedupon.

简介：当一条管道在一张不平的波动海床上被生时或当胀起弄弯由于抑制热扩大发生时，跨度发生。这不仅在跨度节在流动线上导致静态、动态的负担，而且产生旋涡导致了颤动(VIV)，它能导致疲劳问题。如果没适当地预言并且控制，现象将否定地影响管道正直，导致昂贵的补习和干预工作。跨度分析能是复杂的由：长跨越长度，一张不平的海床引起的很多跨度，和多跨度相互作用。另外，当土壤不确定性，具体降级和未知剩余躺了时，复杂性能更繁重、挑战性紧张在分析被考虑。这篇论文描述最近的开发和被开发了在复杂边界下面模仿一根流动线的跨度反应并且装载的有限元素分析节目调节的‘state-of-the-art'。VIV并且直接波浪装载在分析被捕获，结果顺序为最终的限制状态(ULS)被使用检查和疲劳生活计算。

简介：ＣＯＮＤＩＴＩＯＮＳＯＦＯＲＴＨＯＧＯＮＡＬＩＴＹＡＮＤＳＴＡＢＩＬＩＴＹＡＳＳＯＣＩＡＴＥＤＷＩＴＨＴＨＥＧＥＮＥＲＡＬＲＥＦＩＮＥＭＥＮＴＥＱＵＡＴＩＯＮＺｈａｎｇＱｉｎｇ（张青）（ＨｕｂｅｉＣｏｌｌｅｇｅｏｆＦｉｎａｎｃｅａｎｄＥｃｏｎｏｍｉｃ...

简介：ThepurecubicGaN(c-GaN)hasbeengrownon(001)GaAssubstratesbyECR-PAMOCVDtechniqueatlowtemperatureusingTMGaandhighpureN2asGaandNsources,respectively.TheeffectsofsubstratepretreatmentconditionsonqualityofcubicGaNepilayerareinvestigatedbythemeasurementsofTEMandXRD.Itisfoundthathydrogenplasmacleaning,nitridationandbufferlayergrowthareveryimportantforqualityofcubicGaNepilayer.

简介：FivethermophilicstrainsthatcandegradecellulosewereisolatedfromthecompostofawastemanagementinGuangzhou,China.Sinceoneofthemdegradedcelluloseeffectively,itwaschosenasthestudystrain.Basedonitsmorphology,spores′susceptibilitytoheat,cellwallcompositionandothercharacteristics,theorganismwasclassifiedasThermomonosporafusca.Conditionsforproductionofcarboxymethylcellulase(CMCase)wereexamined.TheoptimaltemperatureandpHvalueforenzymeproductionwere50℃and10.5,respectively.Cellulosicmaterialsandeasilymetabolisablecarbohydratesservedascarbonsourcesforthegrowthofthestrain.Onlycotton,avicel,carboxymethylcellulose(CMC)actedaspotentinducersfortheproductionofcellulasesbythisstrain.Despiteexcellentgrowthoneasilymetabolisablecarbohydrates,onlyconstitutivelevelsofcellulaseswereproduced.TheoptimalcarbonandnitrogensourcesforCMCaseproductionwerecottonandsoybeanrespectively.Thehighthermostability,widepHstability,andcheapnitrogensourceshowwellpotentialuseforcompostingtreatmentandcommercialdetergents.

简介：1IntroductionLetRn×nbethesetofalln×nrealmatrices.Rn=Rn×1.Cn×ndenotesthesetofalln×ncomplexmatrices.Weareinterestedinsolvingthefollowinginverseeigenvalueprob-lems:ProblemA（Additiveinverseeigenvalueproblem）Givenann×nrealmatrixA=(aij),andndistinctrealnumbersλ1,λ2,…,λn,findarealn×ndiagonalmatrixD=diag

简介：<正>ThedifferentiabilityofanormofaBanachspacemaybecharacterizedbyitsunitsphere.Thispapergeneralizesthesegeometricconditionsofnorm’sdifferentiabilitytothecaseofaregularlocallyLipschitzfunction.

简介：ThispaperdiscussesproblemIEP:Givenn×mmatrixXandm×mdiagonalmatrixA,findann×nmatrixAsuchthatAX=XA.ThenewsolvablilyconditionsfortheproblemIEPareobtained.TheeigenvaluedislribulaionofthesolutionsfortheproblemIEParedescribedindetail.

简介：ＴＨＥＣＯＮＴＩＮＵＯＵＳＣＡＳＴＩＮＧＰＲＯＢＬＥＭＷＩＴＨＮＯＮ－ＥＱＵＩＬＩＢＲＩＵＭＣＯＮＤＩＴＩＯＮＳ￥（吴少华，刘祖汉）ＷｕＳｈａｏｈｕａ（Ｄｅｐｔ．ｏｆＡｐｐｌ．Ｍａｔｈ．，ＷｕｈａｎＵｎｉｖ．ｏｆＨｙｄｒａｕｌｉｃａｎｄＥｌｅｃｔｒｉ...

简介：NewtransmissionlineequationsarededucedapplyingMaxwell^,sequationsinthispaper.Theconditionsoftheclassicaltransmissionlineequationshavebeendiscussed,whichisimportanttosolvetheEMproblemsinhighfrequencycase.