简介:Inordertohighrealityandefficiency,thetechniqueofmotioncapture(MoCap)hasbeenwidelyusedinthefieldofcomputeranimation.Withthedevelopmentofmotioncapture,alargeamountofmotioncapturedatabasesareavailableandthisissignificantforthereuseofmotiondata.Butduetothehighdegreeoffreedomsandhighcapturefrequency,thedimensionofthemotioncapturedataisusuallyveryhighandthiswillleadtoalowefficiencyindataprocessing.Sohowtoprocessthehighdimensiondataanddesignanefficientandeffectiveretrievalapproachhasbecomeachallengewhichwecan'tignore.Inthispaper,firstwelayoutsomeproblemsaboutthekeytechniquesinmotioncapturedataprocessing.Thentheexistingapproachesareanalyzedandsummarized.Atlast,somefutureworkisproposed.
简介:Theprocessesreportedforthepreparationoflanthanumhexaboride(LaB6)fromlanthanumoxideinvolvetheuseofcarboneitherelementalorintheformofboroncarbideorelementalboronitselfasreducingagents,fusedsaltsathightemperaturesorreactionswhichrequiretheproductboridetobeleachedout.Eachofthesetechniqueseitherincreasestheprocesscostsand/orincreaseschancesofcontaminationinfi-nalproduct.PureLaB6canbestbepreparedbyareactionwhichproducesagaseousbyprodu...
简介:Conceptofblackbox,conditionofmodelingandcontrolmethodswereintroduced.Takinghighpuritysilicabrickasanexample,thesilicabrickfeaturedwithhighpurity,lowporosity,lowtruedensityandhighstrengthwasdevelopedthroughproblemanalysis,testdesign,modelingandoptimization.Usinginformationtechnologytoupgraderefractoriesindustrywasdiscussed.
简介:Approximating-natureforestrymanagementtechniqueapplicationresearchisdevelopedinCiinninghamialanceolataplantationfor17yearsatJiuxianForestFarminSongxiCounty,FujianProvince.TheresultsshowthatthebiodiversityoftheC.lanceolataplantationwasincreasedfrom48.5±3.3to74.6±3.3afteradoptingclose-to-natureforestrymanagementtechniques.Comparedwithconventionalmanagementmethod,thetestedforest’ssoilfertilitywasimproved:thesoilmoisture-physicalpropertiesandsoilexchangepropertieswereameliorated,thesoilnutrientcontentswereincreased;theaveragebreastheight,averagetreeheight,individualvolume,Chinesefirstandvolumeandstandtotalvolumewerepromotedby9.24%-17.64%,8.61%-17.29%,27.94%-58.46%,2.38%-28.64%and8.63%-37.55%,respectively.Theworsethesiteconditions,thegreatertheeffectindexeswithclose-to-natureforestrymanagementtechniqueswereimproved.
简介:Detectingthetimingandamountofdeformationiscriticalforunderstandingthephysicalcausesandeventuallywarningofpossiblelandslidehazards.Monitoringofdeformationofstructuresandgroundsurfacedisplacementsduringlandslidescanbeaccomplishedbyusingdifferenttypesofsystemsandtechniques.Besidesgeotechnicalorphysicaltechniques,remotesensingtechniquescanbeclassifiedassatellitetechniques,photo-grammetrictechniques,geodetictechniques,groundbasedtechniques,andsoon.TostudyandgoverngrowinggeologicaldisastersinChina,especiallyintheThreeGorgesarea,ThreeGorgesResearchCenterforGeo-hazard(TGRG)isestablishinganinfrastructuretoef-fectivelyandcomprehensivelyanalyzethemechanismoflandslidedeformation,focusedontheHuangtupolandslide,usingofvariousad-vancedmonitoringsystemsandtechniques.Inthisarticle,theframeworkandlatestadvancesofintegrationofmultiremotesensingtechniquesintheinfrastructurearepresented.Differentremotesensingtechniques,dataprocessingandintegratingmethods,andthelatestresultsarediscussedindetail.Atlast,reviewsoncurrentworkandsuggestionsforfurtherworkareputforward.
简介:Thelocalthermalconductivityofpolycrystallinealuminumnitride(AlN)ceramicsismeasuredandimagedbyusingascanningthermalmicroscope(SThM)andcomplementaryscanningelectronmicroscope(SEM)basedtechniquesatroomtemperature.ThequantitativethermalconductivityfortheAlNsampleisgainedbyusingaSThMwithaspatialresolutionofsub-micrometerscalethroughusingthe3ωmethod.Athermalconductivityof308W/m·Kwithingrainscorrespondingtothatofhigh-puritysinglecrystalAlNisobtained.Theslightdifferencesinthermalconductionbetweentheadjacentgrainsarefoundtoresultfromcrystallographicmisorientations,asdemonstratedintheelectronbackscattereddiffraction.Amuchlowerthermalconductivityatthegrainboundaryisduetoimpuritiesanddefectsenrichedinthesesites,asindicatedbyenergydispersiveX-rayspectroscopy.