简介：Thispaperpresentsalarge-scaleparticletrackingvelocimetry(LSPTV)systemformeasuringsurfacevelocityinvastunsteadyflows.Thesystemconsistsofaflexiblenumberofone-computer-six-cameraworkingunitsconnectedvialocalnetworkortheinternet.Multiplezero-tiltingcamerasareusedtoincreasesthefieldofviewwithminimumperspectivedistortions.Externalsynchronizationofvideooutputsofallcamerasfacilitatesuninterruptedimageacquisitionwithinthesystem.Effectivenessandefficiencyofthemulti-channelLSPTVareenhancedbyoptimizingillumination,flowseeding,imageacquisitionandcorrection,traceridentification,particlematching,andpost-processing.ThecapacityoftheLSPTVwasdemonstratedinthemeasurementofphysicalmodelflowsfortheThreeGorgesProject.

简介：-Measuringmulti-directionalwaveswiththewavegaugearrayisoneofthefundamentalandeasilyrealisedmethods.Inthispaper,thewavegaugearrayisdescribedandtheeffectsofthegaugespacing,thearrayorientations,etc.ofthethreearrayarrangements,i.e.,lineararray,T-typearrayandpentagonarray,ontheresolutionofthedirectionalspreadingofwaves,areinvestigatedexperimentally.Thisstudycanbeusedasareferenceintheexperimentalstudyandthefieldmeasurementofdirectionalwaves.

简介：Inthispaper,theprogressanddevelopmentonremotesensingtechnologyappliedinearthquakemonitoringresearcharesummarized,suchasdifferentialinterferencesyntheticapertureradar(D-InSAR),infraredremotesensing,andseismo-ionosphericdetecting.Manynewmonitoringdatainthisdomainhavebeenused,andnewdataprocessingmethodshavebeendevelopedtoobtainhigh-precisionimagesaboutcrustaldeformation,outgoinglongwaveradiation(OLR),surfacelatentheatflux(SLHF),andionosphericparameters.Thedevelopmentinmonitoringtechnologyanddataprocessingtechniquelargelyenrichesearthquakeresearchinformationandprovidesnewtoolsforearthquakestereoscopemonitoringsystem,especiallyonthespacepart.Finally,newdevelopingtrendinthisareawasintroduced,andsomekeyproblemsinfutureworkwerepointedout.

简介：TwostrainsofgreenmicroalgaeC.reinhardtiandC.pyrenoidosawereexaminedfortheirbiosorptionofMn2+,Fe2+,Co2+,Ni2+,Cu2+,Zn2+,andCd2+fromaqueousmulti-metalsolutions.Awiderangeofbiosorptioncapacitiescanbeobservedduetodifferentstrainsofmicroalgaeanddifferentspeciesoftracemetals.Thischaracteristicwasascribedtothedistinctcomponentsandstructuresofalgalcellwallsandthedifferentphysicochemicalpropertiesoftracemetals,suchasatomicweightandiondensity.C.pyrenoidosashowedhigheruptakecapacitiesthanC.reinhardtiandbothofthemhadapreferencefortheuptakeofcadmiumoverothersinthetracemetalsolution,suggestingtheycanbeagoodbiomaterialforbiosorptionofcadmium.Livemicroalgalcellsdisplayedamorecomplexsorptionprocessthandeadmicroalgalcellsbecauseofcellassimilation.

简介：追踪作为多尺度知道的算法追踪雷达的新雷达回响回应由跨关联(MTREC)在这研究被开发在不同空间规模分析雷达回响的运动。雷达回响的运动，特别地与对流暴风雪联系了，在导致对流暴风雪的形成的气象学的系统之中由于复杂相互作用在各种各样的空间规模展出不同特征。为空回响区域，平常的关联技术生产零或运动向量的很小的大小。减轻这些限制，MTREC由关联(TREC)使用追踪的雷达回响有一个大盒子的技术驾驶风驾驶的系统的运动，和MTREC与一个小盒子使用TREC技术决定估计小规模的内部运动向量。最后，MTREC向量被综合获得系统的运动和小规模的内部运动。MTREC技术的性能与用案例研究的TREC技术相比：Wenzhou雷达和一个嚎啕线系统在2005年9月11日在2011年6月23日观察的Khanun台风由北京雷达检测了。结果证明那更空间地变光滑，连续向量领域能被MTREC技术产生，它在追踪全部雷达反射率模式导致改进。新多尺度的追踪计划被使用在量的降水nowcasting的表演上学习它的影响。在一1-h铅时间的重降水的地点和紧张与使用雷达和雨计量器的量的降水估计更一致。

简介：Therearemanyfactorsaffectingtheinstabilityofthesubmarinehydrate-bearingslope(SHBS),andtheinteractionwithhydrateisverycomplicated.Inthispaper,themechanicalmechanismofthestaticliquefactionandinstabilityofsubmarineslopecausedbythedissociationofnaturalgashydrate(NGH)resultingintherapidincreaseofporepressureofgashydrate-bearingsediments(GHBS)andthedecreaseofeffectivestressareanalyzedbasedonthetimeseriesandtypeofSHBS.Then,takingthetypicalsubmarineslopeinthenorthernSouthChinaSeaasanexample,fourimportantfactorsaffectingthestabilityofSHBSareselected,suchasthedegreeofhydratedissociation,thedepthofhydrateburial,thethicknessofhydrate,andthedepthofseawater.Accordingtotheprincipleoforthogonalmethod,25orthogonaltestschemeswith4factorsand5levelsaredesignedandthesafetyfactorsofsubmarineslopestabilityofeachschemearecalculatedbyusingthestrengthreductionfiniteelementmethod.Bymeansoftheorthogonaldesignrangeanalysisandthevarianceanalysis,sensitivityofinfluentialfactorsonstabilityofSHBSareobtained.Theresultsshowthatthedegreeofhydratedissociationisthemostsensitive,followedbyhydrateburialdepth,thethicknessofhydrateandthedepthofseawater.Finally,theconceptofgashydratecriticalburialdepthisputforwardaccordingtotheinfluencelawofgashydrateburialdepth,andthenumericalsimulationforspecificsubmarineslopeiscarriedout,whichindicatestheexistenceofcriticalburialdepth.

简介：在维持在供应之间的平衡的耕地工具的供应和需求和在有时间的推移的某个区域以内的耕地的需求之间的动态平衡。维持在耕地的供应和需求之间的动态平衡是为耕地的持续使用和农业的持续发展的前提和基础，是众所周知的。并且它是与整个社会和国民经济的持续发展有关的一个全面、战略的问题。现在，面对象人口的快速的生长的如此的一种严重状况，蓬勃发展工业和城市的扩大，激进的土壤恶化和污染和数量的连续减少和在世界上的耕地的质量，中国不得不依靠它的自己的陆地作为一个号码1最大的人口得到食物的自足。

简介：地震照明在表面下的成像起一个重要作用。一幅更好的图象也能通过优化获得几何学或介绍包含照明赔偿的更先进的地震移植或tomographic倒置方法被期望。垂直电报调查是为它的灵活性和数据质量的传统的海洋的地震调查的潜在的代替。处理的常规垂直电缆线数据在移植前要求primaries和multiples的分离。我们建议使用多尺度的完整的波形倒置(FWI)改进垂直电报调查的照明范围。一个深水速度模型被造在在海床下面检测低速度异例测试多尺度的FWI的能力。合成结果证明多尺度的FWI是在深海的探索的一个有效模型大楼工具。通过面向的照明分析和多尺度的FWI可以帮助减轻垂直电报调查的风险的目标的几何学优化。多尺度的FWI，低频率的数据和multi-vertical-cable获得系统的联合可以提供高分辨率和高保真度表面下的模型。

简介：Ingeneral,theseismicresponseanalysisinearthquakeengineeringassumesthatthevibrationparametersofthetargetandthecontactsurfaceoftheexternalmediaareidentical,i.e.,singlepointinput.However,earthquakeenergyhasanattenuationphenomenoninwavepropagation,soawiderangeofsoilslopesandtheexternalmediumcontactsurfaceofdifferentinputpointsonmotionarenotidentical.Ifweconsidersinglepointinputonly,itmaynotcorrespondwithreality,soitisnecessarytocarryoutresearchonmulti-pointinputmethods.Basedonthe2-Dslopemodel,single-pointinputandmulti-pointinputareperformedrespectivelytoanalyzeandcomparetheirsimilaritiesanddifferencesintheperspectivesofthecharacteristicsofseismicresponseofsoillayerandplasticzonedistributiontoprovideareferencefortheseismicdesignofslopes.Theresultsshowthatintheperspectiveofsoilseismicresponseanalysis,thepeakaccelerationoutputandpeakvelocityoutputundermulti-pointinputaregreaterthanthepeakvaluesundersinglepointinputatthesamemonitoringpoint,thepeakappearingtimeisalsoearlierthanthatofthesinglepointinput;intermsoftheplasticzonedistribution,themulti-pointeffectismanifestedasthepresenceofmoreobvioustensileshearfailures;intheperspectiveofsafetycoefficient,thesafetycoefficientundereachmulti-pointinputissmallerthanthatofsinglepointinput,adifferenceofabout7%orso.Insummary,multi-pointinputismorereasonableandpracticalthansinglepointinput,somulti-pointinputshouldbeconsideredinseismicdesign.

简介：TheuniquegeographicallocationandhighaltitudeoftheTibetanPlateaucangreatlyinfluenceregionalweatherandclimate.Inparticular,theAsiansummermonsoon(ASM)anticyclonecirculationsystemovertheTibetanPlateauisrecognizedtobeasignificanttransportpathwayforwatervaporandpollutantstoenterthestratosphere.Toimproveunderstandingofthesephysicalprocesses,amulti-locationjointatmosphericexperimentwasperformedovertheTibetanPlateaufromlateJulytoAugustin2018,fundedbythefiveyear(2018–2022)STEAM(stratosphereandtroposphereexchangeexperimentduringASM)project,duringwhichmultipleplatforms/instruments—includinglong-durationstratosphericballoons,dropsondes,unmannedaerialvehicles,specialsoundingsystems,andground-basedandsatellite-borneinstruments—willbedeployed.Thesecomplementarymethodsofdataacquisitionareexpectedtoprovidecomprehensiveatmosphericparameters(aerosol,ozone,watervapor,CO2,CH4,CO,temperature,pressure,turbulence,radiation,lightningandwind);therichnessofthisapproachisexpectedtoadvanceourcomprehensionofkeymechanismsassociatedwiththermal,dynamical,radiative,andchemicaltransportsovertheTibetanPlateauduringASMactivity.

简介：Thispaperistoadvancesomerelevanttechniquestosetupathree-dimensionalindustrialsurveyingsystemof'buildingblockstype',makinguseoftheelectronictheodolite,standardrulerandportablecomputer.

简介：把系统基于追踪Velocimetry(3DPTV)的三个维的粒子，有四条不同直径的粒子的运动的特征在稳定的流动条件下面被调查。这些粒子的纵的平均速度侧面根据木头法律，当垂直、横向的速度与最小的变化仍然保持很低时。在床负担层的粒子的时间一般水准速度是8.50u*，近到Bagnold的假设Un吗？ω。在暂停区域的粒子的垂直集中分发同意了Rouse方程。当粒子的直径相对大时，在那里存在在床负担层的一个明显的集中坡度。

简介：ＩｍｐｒｏｖｉｎｇｔｈｅＶｏｒｔｉｃｉｔｙ－ＳｔｒｅａｍｆｕｎｃｔｉｏｎＭｅｔｈｏｄｔｏＳｏｌｖｅＴｗｏ－ＤｉｍｅｎｓｉｏｎａｌＡｎｅｌａｓｔｉｃａｎｄＮｏｎｈｙｄｒｏｓｔａｔｉｃＭｏｄｅｌＳｕｎＬｉｔａｎ（孙立潭）ａｎｄＨｕａｎｇＭｅｉｙｕａｎ（黄...

简介：TheCSU-RAMS-2AwasusedtosimulatethemeteorologicalfieldsovertheZhujiangRiverDeltainSouthChina.Initializedfromahorizontallyhomogeneousatmosphere,realtopographyandinhomogeneoussurfaceboundarycondi-tions,themodelwasrunwiththermalandterrainforcing.Themodelingresultsofwinterandsummercasesarecom-paredwiththoseobserved.Thesimilarityofthepredicteddistributionsofwinds,temperaturesandhumiditiestotheob-servedpatternspermitsustoconcludethatthemesoscaledistributionofmeteorologicalelementsforthetwostudydatesistheresultofthethermalanddynamicalforcingbytheunderlyingsurfaceandtopography.

简介：

简介：PointbarsarewelldevelopedontheYellowRiverdelta,amongwhichtheShengliIpointbaristhemosttypical.Thepointbar,beingabout4kminlengthandseveraltenstomorethan100metersinwidth,islocatedonthesouthsideoftheShengliBridgeinKenliCounty,Dongying,Shandong.Itisatypicalfine-grainedpointbarwithsilt,whichispredominant,someclayandminorplantdebrisandclayboulders.TheShengliIpointbarhascomplicated3-Dstructures.Firstly,inaplaneview,itcomprisesmainlyeightsedimentaryunits,baredge,barridge,barplatform,barplain,barchannel,bargully,barpondandbarbay,developingsidebysideandsuperimposedonebyoneinacomplexway.Secondly,itsverticalstructuresareverycomplexduetothepartialsuperimpositionofthe8sedimentaryunits.Besideshydatogenesis,veryintensivewinderosion,eolian,iceandmeltwateractionsarealsovisibleontheShengliIpointbar.Thecomplexformismadeevenmorecomplicatedbecauseoftheaboveco-actions.

简介：LASG/IAP气候海洋模型，的一个四维的变化数据吸收(4DVar)系统版本1.0(LICOM1.0)，命名LICOM-3DVM，用印射的观察(3DVM)的三维的变化数据吸收被开发了，一个4DVar方法最新在过去的二年里求婚了。有12年的模型集成的二个实验被设计验证它。一吸收被运用的、叫的ASSM，它合并了分析的每周的海表面温度(SST)由LICOM-3DVM每周一次从在1990和2001之间的雷纳兹和史密斯(OISST)回答。没有任何吸收，其它是控制跑，命名CTL。ASSM表演上面的海洋的模仿的温度(在50米上面)，特别赤道的太平洋的SST，与回归线空气海洋(道)绳索数据与一致，世界海洋地图集2001(WOA01)数据和遇见的办公室哈德利中心是海冰和海表面温度(HadISST)数据。它减少了在东方太平洋在CTL存在的冷偏爱并且生产了同意观察很好的一个Niño索引。确认结果建议LICOM-3DVM能有效地调整海洋温度的模型结果，尽管它是难的改正表面下的结果，它甚至由于仅仅表面数据的加入在一些区域使他们更坏。LICOM-3DVM的未来开发在situ观察是包括表面下的，进一步改善的卫星观察为模拟建模。

简介：一个三维的数字模型在现在的纸被开发，旨在模仿处于不连续的状况的推迟的沉积运输。在模型，推迟的沉积的移流散开方程基于未组织的网孔用紧缩的不连续的Galerkin(CDG)方法被解决。模型的评估揭示了在建议模型和存在理论之间的好同意。模型有秒顺序精确性。而且，模型被用于引起由的推迟的沉积运输的一个理想化的盒子基于这块地撕破水流空间规模。

简介：Ahigher-efficientthree-dimensionalnon-hydrostaticmodelisdevelopedtosimulatesmallamplitudefreesurfaceflowsbasedonastaggeredunstructuredgrid.Inthismodel,afractionalstepalgorithmisadoptedtosolvetheNavier-Stokesequationsintwomajorsteps.Atop-layerpressuremethodisproposedtominimizethenumberofverticallayersandsubsequentlythecomputationalcost.Threeclassicalexamplesofsmallamplitudefreesurfaceflowsareusedtodemonstratethecapabilityandefficiencyofthemodel.Thesatisfactoryresultsdemonstratedthecapabilityandefficiencyofmodellingarangeofsmallamplitudefreesurfaceflowswithonlyasmallnumberofverticallayers.

简介：AfterRodiniasupercontinentwasdisintegratedinLateProterozoic,anocean,namely,TethysOcean,occurredbetweenGondwanacontinentalgroupandPan-CathaysiancontinentalgroupfromLateProterozoictoMesozoic.FromEarlyPaleozoictoMesozoic,TethysOceanwassubductedtowardPan-Cathaysianblockgroup,whichresultsinbackarcexpansion,arc-landcollisionandforearcaccretion.Whenthebackarcbasinexpandsandreachesthesmalloceanicbasin,ophiolitemelangewillbegenerated.Asaccretionhadalreadyoccurredinthesouthofthecontinentalmarginintheearlierstage,thesucceedingbackarcexpansionandthefrontalarcpositionweremigratedtowardsouthcorrespondingly.Therefore,multipleophiolitebeltsandmagmaticrockbeltsoccurred,andshowatrendofdecreasingagefromnorthtowardsouth.Asthecontinentalmarginwassplitandmigratedtowardsouthandreachedahighlatitudeposition,i.e.,withtheshorteningandsubductionofoceaniccrust,thesedimentarybodiesathighlatitudewasaccretedcontinuouslytowardlowlatitudeareatogetherwiththeformationofoceanicisland,mixingofcold-typeandwarm-typeorganismwasgenerated.Moreover,blockssplitandseparatedfromPan-CathaysianorGondwanacontinentalgroupcannottraversetheoceanicmedianridgeandjoinswithanothercontinentalblock.Asaresult,theKunlunbeltontheSWmarginofthePan-Cathaysianlandwasresultedfromthemulti-arcorogenesissuchasthebackarcseabedexpansion,arc-arccollision,arc-landcollisionoceanicbed,andthecontinuoussouthwardaccretionprocess.