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  • 简介:Theissuesofwarandpeacecapturedinternationalattentionin2014.ItwasthecentennialofWorldWarI,andthefocuswasontensionsinAsiaforthefirsthalfoftheyear.OneradicalWesternviewwentsofarastocomparetoday'sChinatopre-warGermanyinthemidstofrapideconomicgrowth,risingnationalismandabeefedupmilitary.ThehypeaboutBeijing'sallegedregionalexpansionpeakedattheShangri-LaSecurityForum(Singapore)inMay2014.However,eventsonthegroundprovedsuchglibaccusationswrong.InOctober2014,thisauthoraccompaniedseveralotherChinesescholarsinavisittosevenU.S.thinktanks.OurAmericanhostswerenotworried

  • 标签: 第一次世界大战 折点 秩序 国际社会 民族主义 香格里拉
  • 简介:<正>Theeducationhasasignificantimpactnotonlyonindividualsbutalsoonthenation.Therearetwotypesofeducation,oneisstudent-central,andtheotherkeepsawatchfuleyeonthemarks.Whichoneisbetteronearth?Thefollowingismyviewpoint.

  • 标签: VIEWPOINT THINKING MARKS themselves SKILL putting
  • 简介:我们在chiral附近计算夸克数字危险性(QNS)批评结束点(CEP)。CEP被发现被定位在(c,Tc)=(80兆电子伏,148兆电子伏)在哪儿c和Tc分别地是批评化学潜力和温度。QNS被发现在CEP有最高、最锋利的山峰。当化学潜力在60兆电子伏110兆电子伏的范围时,它也被发现那,转变温度附近的QNS比免费的地结果大,它显示像空间的抑制模式在CEP附近统治运动的自由的度。

  • 标签: 易感性 临界 夸克 手性 转变温度 CEP
  • 简介:Theetiologyofneurodegenerativediseasesisdiverse,howevermostofthemsharecommoncharacteristics:accumulationofmisfoldedproteins,chronicandsustainedneuroinflammation,andthedysfunctionanddeathofcertainpopulationsofneurons.ThebrainofAlzheimer’sdisease(AD)patientspresents

  • 标签: 神经退行性疾病 错误折叠 炎症反应 功能障碍 神经元 蛋白
  • 简介:点速度和推迟的沉积集中大小被用来在沙床河里计算全部的沉积分泌物。有修改爱因斯坦点过程(SEMEPP)的系列扩大的计算取决于谷物直径ds和安定速度,流动深度h砍速度u*,和采样深度hp。这个过程由使用点沉积集中和速度大小扩大修改爱因斯坦过程(MEP)的适用性。这个过程从科尔曼用实验室数据被测试,并且从Enoree,中间的RioGrande和密西西比河回答大小。在从0.17m到33.5m和沉积集中的流动深度在124verticals上基于801点大小计算的精确性取决于的不到0.1kgL−1,u*/和hp/ds。当时,象SEMEPP一样的点测量技术是很相配的u*/5当90%流动深度被取样时,60%全部的沉积在哪儿至少装载,被测量。从点大小的沉积分泌物的决心在深河里是很精确的什么时候hp/ds>10,000,并且u*/>10。点大小不为浅河和实验室斜槽是很相配的在哪儿h<0.5m并且什么时候u*/<2。

  • 标签: 浓度测量 输沙量 计算 河流 沙床 沉降速度
  • 简介:ThepresentstudywasdesignedtoinvestigatethechemicalconstituentsoftherootsofCudraniafruticosaWight.Compoundswereisolatedbyvariouscolumnchromatographicmethodsincludingsilicagel,polyamide,sephadexLH-20,andsemi-preparativeHPLC.Theirstructureswereelucidatedbyacombinationof1Dand2DNMRtechniques,massspectrometry,andchemicalmethods.Twonewxanthones,CudraxanthoneTandU(1-2),alongwithfourknowncompounds(3-6)wereisolatedfromtherootsofCudraniafruticosaWight.

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  • 简介:TheeffectsofReynoldsnumberonbothlarge-scaleandsmall-scaleturbulencepropertiesareinvestigatedinasquarejetissuingfromasquarepipe.ThedetailedvelocityfieldsweremeasuredatfivedifferentexitReynoldsnumbersof8×103190,thevalueofA=εL/〈u2)3/2inthepresentsquarejetconvergesto0.5,whichisconsistentwiththeobservationindirectnumericalsimulationsofboxturbulence,butlowerthanthatincircularjet,platewakeflows,andgridturbulence.ThediscrepanciesincriticalReynoldsnumberandA=εL/〈u2〉3/2amongdifferentturbulentflowsmostlikelyresultfromtheflowtypeandinitialconditions.

  • 标签: 雷诺兹数 网格湍流 方形管 圆射流 数制 直接数值模拟
  • 简介:Systemsofphotosyntheticreactioncentreshavebeenmodelledasheatengines,whileithasalsobeenreportedthattheefficiencyandpowerofsuchheatenginescanbeenhancedbyquantuminterference—atraitthathasattractedmuchinterest.Wecomparetwodefinitionsoftheworkofsuchaphotosyntheticheatengine,i.e.definitionAusedbyWeimeretal.andBbyDorfmanetal.Wealsointroduceacoherentinteractionbetweendonorandacceptor(CIDA)todemonstrateareversibleenergytransport.Weshowthatthesetwodefinitionsofworkcanimpartcontradictoryresults,thatis,CIDAenhancesthepowerandefficiencyofthephotosyntheticheatenginewithdefinitionBbutnotwithA.Additionally,wefindthatbothreversibleandirreversibleexcitation-energytransportcanbedescribedwithdefinitionA,butdefinitionBcanonlymodelirreversibletransport.Asaresult,weconcludethatdefinitionAismoresuitableforphotosyntheticsystemsthandefinitionB.

  • 标签: QUANTUM WORK HEAT ENGINE PHOTOSYNTHESIS
  • 简介:这份报纸给有限维的无法缩减的操作员的概念((FDI)操作员)并且无限的维的无法缩减的操作员((IDI)操作员)。讨论关系(FDI)操作员,(IDI)操作员和强烈无法缩减的操作员((SI)操作员)并且说明操作员的三个班的一些性质。为有上面的三角形的操作员矩阵的形式的操作员的有限维的irreducibility的一些足够的条件被给。这份报纸证明有一个单条系列的每个操作符是小紧缩的不安一(FDI)在每围住的线性操作符T能被操作符接近在的可分离的Banach空格和表演(FDI)的操作员关于强壮操作员的拓扑学和每个紧缩的操作符K罐头的(X)由操作符接近了在(FDI)关于有一个Schauder基础的Banach空格X上的标准拓扑学的(X),在此(FDI)(X):={TB(X):T=i=1kTi,Ti(FDI),k}。

  • 标签: 扰动算子 不可还原性 紧凑 强不可约算子 SCHAUDER基 巴拿赫空间
  • 简介:Themarginofappreciationiscontroversialanddifficulttounderstand.SinceitsfirstreferenceinthecaseofGreecevs.UK,themeaningofthisdoctrinehasevolvedfromdeferencetoderogationfromtheEuropeanConventiontoaninflationoflanguageusedormisusedbytheStrasbourgCourttopreservetheState’s"roomformanoeuvre"or"latitudeofdeferenceorerror."Inthispaper,Idividetheconceptofmarginofappreciationintotwocategories:thesubstantiveandstructuralconcept.TheStrasbourgCourtusuallygenerouslydeferstonationaldecisionsinstructuralscrutinywhereithastorespectEuropeanpluralismandthecollectiveinterestsofthecontractingpartiesunlessdomesticdecisionsareregardedas"manifestlyunreasonable."Incontrast,theEuropeanHumanRightsCourtscrutinizescarefullyinthesubstantivesenseofmarginofappreciation.Somefactorsortestapproacheswillbeidentifiedfirst,bywhichtheCourtsubstantivelynarrowsorlimitsthescopeofmarginpreservedfortheStates.Theresultoftwoconceptualmarginsofappreciationmaybereciprocallytransformedinsomecircumstances.WhenthecollectivegoodsurelyunderminesthecoreofConventionrights,theCourtwillnotstandwiththedomesticargumentsinceitmustensuretheimplementationofpan-Europeanhumanrightsstandards.Ontheotherside,theCourthasnocapacitytofurtherincreasestrictscrutinyincaseswherethereisacomplicatedrelationshipbetweenthemeansandendsintheproportionalitytest,implyingthatdomesticcourtsarebetterplacedthanthesupranationalcourtgiventhefactthattheyknowbetterthelocalrealityandhavemorelocalknowledge.

  • 标签: MARGIN of APPRECIATION DEFERENCE PROPORTIONALITY ESSENCE
  • 简介:Ithaslongbeenrecognizedthattherotationofsingleparticlesplaysaveryimportantroleinsimulationsofgranularflowusingthediscreteelementmethod(DEM).ManyresearchershavealsopointedoutthattheeffectofrollingresistanceatthecontactpointsshouldbetakenintoaccountinDEMsimulations.However,evenforthesimplestcaseinvolvingtwo-dimensionalcircularparticles,thereisnoagreementonthebestwaytodefinerollingandsliding,anddifferentdefinitionsandcalculationsofrollingandslidinghavebeenproposed.Ithasevenbeensuggestedthatauniquerollingandslidingdefinitionisnotpossible.Inthispaperweassessresultsfrompreviousstudiesonrollingandslidingindiscreteelementmodelsandfindthatsomeresearchershaveoverlookedtheeffectofparticlesofdifferentsizes.Afterconsideringtheparticleradiusinthederivationofrollingvelocity,allresultsreachthesameoutcome:auniquesolution.Wealsopresentaclearandsimplederivationandvalidateourresultusingcasesofrolling.Suchadecompositionofrelativemotionisobjective,orindependentofthereferenceframeinwhichtherelativemotionismeasured.

  • 标签: 离散单元法 元件模型 滑动 滚动阻力 轧制 单个颗粒
  • 简介:Inthepast,thepseudo-staticmethodusedtobethemostcommonforevaluatingthestabilityoflandslidesunderseismicloads,inwhichstaticforcesactingonthecenterofgravityofaslidingbodyareusedtoconsidertheeffectsofearthquake.However,seismicloadsofrockandsoildifferfromtimeandlocationtotimeandlocation.Obviously,itisirrationalforthepseudo-staticapproachtobeappliedtosolvingdynamicproblems.Inthispaper,adisplacementpseudo-dynamicmodelisproposedtoassessseismicstabilityoflandslides,inwhichthesinusoidalcosinusoidalwaveisappliedtosimulatingearthquakedisplacement,andan'amplificationfactor'ofpeakseismicdisplacementisreferredtoastheamplificationofseismicwavewhenitpropagatesfromthebottomtothetopofthelandslide.Theeffectsofphysico-mechanicalbehaviorsofaslidingbodyonseismicstabilityofsoilslopesaretakenintoaccountaswellasinertiaforcesanddampingforces.Thesensitivityanalysesonthepermanentdisplacementandthedynamicfactorofsafetyoflandslidesarestudiedindetail.Moreover,alarge-scaleTangjiashanlandslidethatoccurredinWenchuanearthquakeisinvestigatedtoverifytherobustnessandprecisionofthepresentmethod.Itisfoundthattheresultsfromthepresentmethodisingoodagreementwiththosefromthepreviousmethod.

  • 标签: 稳定性分析 地震荷载 荷载作用 滑坡 地震稳定性 二维
  • 简介:Inordertoinvestigatetheinjectioncurrentuniformityaroundtheinductioncellbores,twofullyelectromagnetic(EM)modelsarerespectivelyestablishedforasingle-stageinductioncellandaninductionvoltageadder(IVA)withthreecellsstackedinseries,withoutconsideringelectronemission.Bymeansofthesetwomodels,somefactorsaffectingtheinjectioncurrentuniformityaresimulatedandanalyzed,suchastheimpedancesofaddersandloads,celllocations,andfeedtimingofparalleldrivingpulses.Simulationresultsindicatethathigherimpedancesofadderandloadsareslightlybeneficialtoimproveinjectioncurrentuniformity.Astheimpedancesofadderandloadsincreasefrom5Ωto30Ω,theasymmetriccoefficientoffeedcurrentsdecreasesfrom10.3%to6.6%.Thecurrentnon-uniformitywithinthefirstcellisalittleworsethanthatinotherdownstreamcells.Simulationresultsalsoshowthatthefeedtimingwouldgreatlyaffectcurrentwaveforms,andconsequentlycausesomedistortioninpulsefrontsofcelloutputvoltages.Foragivendrivingpulsewithdurationtimeof70-80ns,thefeedtimingwithatimedeviationoflessthan20nsisacceptableforthethree-cellIVAs,justcausingtherisetimeofoutputvoltagestoincreaseabout5nsatmostandmakingthepeakvoltagedecreaseby3.5%.

  • 标签: 注入电流 非均匀性 数值模拟 感应电压 加法器 单点