简介：在海洋的上面的层的热分布被使用各种各样的典型因素学习了，一些重要低频率摆动(LFO)已经被发现并且确定。在这篇论文，“一个海区域的热中心”与一个简单方法被定义。然后全球海洋的上面的层的温度数据集(从在to400m下面的表面，1955-2003)被分析检测可能的LFO。不仅一些带的LFO，早被报导，而且垂直、南方的热分发的一些强壮的LFO被检测。类似的垂直摆动模式能在太平洋，大西洋和印度洋被发现，这应该被注意。从一些初步的研究的结果证明垂直LFO可能被太阳的发光异例引起。这研究可以帮助在全球海洋揭示一些未知动态过程并且可以也有益于另外的相关研究。

简介：Inthispaper,theauthorusessuper-efficiencyDEAmodeltomeasurethenationalandregionalenergyefficiencyinChina;usingspatialeconometricmodelandfromtheperspectiveofgeo-spatialspillover,theauthorinterpretsthespatialcharacteristicsofenergyefficiencyandextractsthemainfactorsthatinfluencetheregionalenergyefficiency.Theanalysisresultsshowthat:(1)thenationalandregionalenergyefficiencyisconsistentwithinvertedU-shapedcurve,andthenationwideenergyefficiencygapisincreasing;(2)energyefficiencyhastheobviouseffectofthespatialexternaleffect,andwhenthegovernmentmakesenergysavingstrategies,inter-regionalenergycooperationandtheproliferationofadvancedproductiontechnologyshouldbegivenmorepriority;(3)energyefficiencyhassignificantnegativecorrelationwithgovernmentintervention,industrialstructure,ownershipstructure,theenergyconsumptionstructure,andresourceendowments,andhaspositivecorrelationwiththedegreeofopening-upandenergyprice.

简介：这篇文章主要在伪elliptical分发讨论协变性的二次的估计的考虑。在二次的损失功能下面，一个二次的评估者是在二次的评估者的班上的协变性的一个可被考虑的评估者的必要、足够的条件被获得。二次的评估者班的一个完全的班也被给。

简介：LetLBbethelastexittimefromacompactsetBofanellipticdiffusionprocessX.AmoderateestimateforthedistributionofLBisobtained,andthesufficientandnecessaryconditionforEx(LBk)<∞isproved.

简介：Objective:Toprovideanewmethodtoestimatetheeffectivenessofthoracolumbarvertebralfiniteelementmodel.Methods:amechanicalmodelofhumanthoracolumbarvertebraemotionsegmentwasmadeusingthree-dimensionalfiniteelementmethodandthestressdistributionofverticallycompressedthoracolumbarvertebraewasanalyzed,meanwhile,20patientswithburstfractureofthoracolumbarvertebraeweretestedbyCTtocalculatedaverageCTvalueatascertaineddifferentpointsofthoracolumbarvertebrae.Thecalculatedresultsandeffectivestressatthesamepositionwereanalyzedwithstraightlinecorrelation.Results:ThestresslevelofdifferentpositionofthoracolumbarvertebraeunderverticalcompressiveforcewaspositivelycorrelatedwiththecorrelativeCTvalue,andtheregressivestyle,Y-214.028±45.268x,r=0.7386,P<0.05(N=8)showedastatisticalsignificance.Conclusions:Tostudymechanismofthoracolumbarvertebraeinjuriesunderdifferentforceshasclinicalsignificance.

简介：Thisarticlepresentsadatamanagementsolutionbasedonthedatadistributionservice(DDS)communicationmodel.ThebasicDDScommunicationmodelconsistsofaunidirectionaldataexchangewhereapplicationsthatpublishdata'push'therelevantdata,whichisupdatedtothelocalcachesofco-locatedsubscriberstothedata[1].DDShasnospecifiedcenternodetoforwarddatapacketsandmaintainthecommunicationdata.Thistypeofpublish-subscribe(P/S)modelpresentsintegrityandconsistencychallengesindatamanagement.Unlikepeer-to-peer(P2P)distributedstorage,DDSapplicationshaveahardreal-timeenvironmentandfewerdatafeatures,andthecoreproblemisensuringtheintegrityandconsistencyofdataindistributedsystemsunderthishardreal-timeenvironment.ThisarticlebeginswithabriefintroductionofthecommunicationmodelusedbyDDS,thenanalyzespersistentdatamanagementproblemscausedbysuchmodel,andprovidesanappropriatesolutiontotheseproblems.Thissolutionhasbeenimplementedinaprototypesystemofthereal-timeservicebus(RTSB)ofTsinghuaUniversity.

简介：QuantitativedistributionofplanktonicamphipodaintheEastChinaSeaisanalyzedandtherelationwithenvironmentalfactorsandmackerelandscadfishinggroundsisstudied.Theresultshowsthatthecharacteristicofbiomassisgreatseasonalandinterannualvarietyduringthepassingthreedecades.Thedistributionofplanktonicamphipodabasicallyreflectsthemovement,decayandintensificationofthedifferentwatersystemsinthesurveyarea.

简介：Amulti-agentmodelispresentedtodiscussthemarketdynamicsandthesizedistributionoffirms.Themodelemphasizestheeffectsofincreasingreturnstoscaleandgivesthedescriptionofthebornanddeathofadaptiveproducers.Theevolutionofmarketstructureanditsbehaviorunderthetechnologicalshocksareinvestigated.Itsdynamicalresultsareingoodagreementwithsomeempirical"stylizedfacts"ofindustrialevolution.Withthediversityofdemandandadaptivegrowthstrategiesoffirms,thefirmsizeinthegeneralizedmodelobeysthepower-lawdistribution.Threefactorsmainlydeterminethecompetitivedynamicsandtheskewedsizedistributionsoffirms:1.Self-reinforcingmechanism;2.Adaptivefirmgrowingstrategies;3.Demanddiversityorwidespreadheterogeneityinthetechnologicalcapabilitiesoffirms.

简介：Inthispaper,thenormalapproximationrateandtherandomweightingapproximationrateoferrordistributionofthekernelestimatorofconditionaldensityfunctionf(y!|x)arestudied.Theresultsmaybeusedtoconstructtheconfidenceintervaloff(y|x).

简介：Researchonparticulatecharacteristicshasbeenanimportantfrontierinphysicsandchemistryduringthepastdecades.Ithashoweverbeenmostlyfocusedongranularmaterialswithshort-rangeinteractions.Inthiswork,itwasfoundthatthepowerlawofparticlesizedistributionappliedtothelong-rangeinteractingsystemoffloatingdustinair,fromwhichwededucedthatself-organizedcriticalitymightholdforfloatingdustjustasgranularmaterialswithshort-rangeinteractions.Thisfeaturemayrevealunderlyingkineticmechanisms,importantindispersedparticlesystems.Inindustry,powerlawofsizedistributionofdispersedparticlescanbeusedtoinvestigatethechangeofdustsize,andthepowerlawparametercouldbetakenasanimportantindexfordustseparation.

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简介：ThelateralwaveinultrasonicTOFD(timeofflightdiffraction)imagehasatailintransittime,whichdisturbsthedetectionandevaluationofshallowwelddefect.Meanwhile,thelateralwaveandback-wallechothatactasbackgroundaddredundantdataindigitalimageprocessing.Inordertoseparatedefectwavefromlateralwaveandpreparethewayforfollowingimageprocessing,analgorithmofbackgroundremovalmethodnamedasmean-subtractionisdeveloped.Basedonthis,animprovedmethodbystatisticoftheenergydistributionintheimageisproposed.Theresultsshowthatbychoosingproperthresholdvalueaccordingtotheaxialenergydistributionoftheimage,thebackgroundcanberemovedautomaticallyandthedefectsectionbecomespredominant.Meanwhile,diffractivewaveofshallowwelddefectcanbeseparatedfromlateralwaveeffectively.

简介：Thebottomsedimentsamplesweregatheredduringislandinvestigationin1994andintheperiodofcarryingoutthenaturalsciencefundprojectofFujianin1999.Thecomposition,distributionandassemblagecharacteristicsofheavymineralswhichgranularitydistributesfrom0.063to0.125mminthesedimentfromJiulongRiverestuaryarestudiedinthepaper.Theresultsshowthatthereare49kindsofheavymineralsandtheaveragecontentofthemis9.38%.Thedominantandcharacteristicmineralsaremagnetite,hematite,epidote,ilmenite,limonite,hornblende,zircon,andalusite,biotiteandsoon.4mineralassemblagezones(Ⅰ.ThewatercoursegatewayofJiulongRivermineralzone,Ⅱ.ThenorthernestuaryofJiulongRivermineralzone,Ⅲ.Thesouthernestuarymineralzone,Ⅳ.TheeasternestuaryofJiulongRivermineralzone),canbedividedbasedontheheavymineralcontentsandthedistributioncharacteristics,whichnotonlyrelatestothemattersourcesbutalsoiscontrolledbyhydrodynamicconditionandthesedimentaryenvironmentintheJiulongRiverestuary.

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简介：在2010Yushu地震以后的二个小时，摇晃的紧张分发用基于地点效果的ShakeMap快速的产生系统被获得，由作者发展了，它集成原因的差错的构造设置，罢工和规模的信息，在西方的中国的焦点的机制solutions.fault破裂进程和变细关系，以及本地地点effects.The结果如下：摇紧张分发的主要的轴被指导NW-SE，平行到Yushu差错；meizoseismal区域到达紧张并且盖住300km2；紧张区域主要沿着原因的差错在区域40km东南和震中的15km西北被散布；由于本地土壤条件，有基岩上的紧张的区域的西北的部分看紧张是否从基岩变换成土壤；有紧张的区域，，分别地测量3,000km2,8,000km2，和24,000km2。

简介：AccordingtotierecordsofseismicstationnetworksofChina’scontinentandKoreaPeninsulaandthehistoricaldata,thecompleteseismicitypatternwasobtainedforthefirsttime.Theseismiczoningwasconductedbymeansoftheclusteranalysismethod.Themap’sspatialdistributionofseismicityfrom1960to1994showsthattherearethreestrongseismiczones:thefirstonestrikesintheNEdirection,fromtheJiangsuplaininChinatothecentralKoreanPeninsula;thesecondstrikesintheNWdirection,fromtheBohaiSea,ChinatothesouthernKoreanPeninsula;thethirdstrikesintheNWdirection,fromthewesternLiaoningProvincetoPyongyang.Mostofearthquakesarelocatedalongthesethreezones,theseismicintensityislowerthanthatinthemainland,andexhibitedthefeatureoffracturedcrustofamarginalseabasin.

简介：Thispaperproposesahybriddecoupledpowerflowmethodforbalancedpowerdistributionsystemswithdistributedgenerationsources.Themethodformulatesthepowerflowequationsinactivepowerandreactivepowerdecoupledformwithpolarcoordinates.Second-ordertermsareincludedintheactivepowermismatchiteration,andconstantJacobianandHessianmatricesareused.Ahybriddirectandindirectsolutiontechniqueisusedtoachieveefficiencyandrobustnessofthealgorithm.Activepowercorrectionissolvedbymeansofasparselowertriangularanduppertriangular(LU)decompositionalgorithmwithpartialpivoting,andthereactivepowercorrectionissolvedbymeansofrestartedgeneralizedminimalresidualalgorithmwithanincompleteLUpre-conditioner.Typicaldistributiongenerationmodelsanddistributionloadmodelsareincluded.Theimpactofzero-impedancebranchesisexplicitlymodeledthroughreconfiguringoftheadjacentbrancheswithimpedances.Numericalexamplesonasampledistributionsystemwithwidespreadphotovoltaicinstallationsaregiventodemonstratetheeffectivenessoftheproposedmethod.

简介：东廷·莱克是在在中国的长江的中间的活动范围的最大的湖。几个世纪，住在东廷·莱克区域的人一直在回收土地并且为洪水抵抗，农业生产，和农村解决构造水坝，形成作为新辟的低地知道的地理实体。在这研究，在在1949，1998，和2013的东廷·莱克区域的新辟的低地的地区性的空间分布用历史的地图和现代遥远地察觉到的数据被获得，揭示自从人们中华民国的建立的变化。Nanxian县然后被选择在县水平表明新辟的低地变化，因为它在区域经历了最戏剧的变化。为Datonghu，圣诞节，和Renhe新辟的低地的不同新辟的低地变化模型为八个时期被分析：1644(早Qing王朝)，1911(迟了的Qing王朝)，1930(中华民国)，1949(人们中华民国)，1963，1970，1998，和2013。三产生新辟的低地进化模型是：1)从湖回收新辟的低地，2)由溪流合并集成新辟的低地，并且3)为洪水版本放弃新辟的低地。新辟的低地进化模型在根据特定的地区性的条件使用陆地资源表明本地人的智慧。在整个他们的长期的历史的进化，在东廷·莱克区域的新辟的低地的空间分发趋于同类，并且人的骚乱的度趋于稳定。然而，移动发生了，从到地区性的环境的更全面的管理和保护的纯新辟的低地区域生长或移动。