简介:Tointroducethemethodandcurativeeffectoftreatingpseudoaneurysmsbypaddingandcompression.Method:retrospectivelyanalyzethecurativeeffectoftreating17pseudoaneurysmsbypaddinghardthingsandcompression.Result:15ofthemwascompletelyrecoveredbydoingso,murmurdisappearedandthelocalskinbecameeven,therewasnorecurrencesandcomplicationsafter0.5-3year'sfollowingup,buttheothertwowerethesameasbeforethetherapy.Conclusion:pseudoaneurysmscanbetreatedeffectivelybypaddingandcompression
简介:Acompressionalgorithmisproposedinthispaperforreducingthesizeofsensordata.Byusingadictionary-basedlosslesscompressionalgorithm,sensordatacanbecompressedefficientlyandinterpretedwithoutdecompressing.Thecorrelationbetweenredundancyofsensordataandcompressionratioisexplored.Further,aparallelcompressionalgorithmbasedonMapReduce[1]isproposed.Meanwhile,datapartitionerwhichplaysanimportantroleinperformanceofMapReduceapplicationisdiscussedalongwithperformanceevaluationcriteriaproposedinthispaper.Experimentsdemonstratethatrandomsamplerissuitableforhighlyredundantsensordataandtheproposedcompressionalgorithmscancompressthosehighlyredundantsensordataefficiently.
简介:TwogradesofDyneema~?compositelaminateswiththecommercialdesignationsofHB26andHB50werecutintoblockswithorwithoutanedgecrackandcompressedinthelongitudinalfiberdirection.Thecrackedanduncrackedspecimensshowsimilarcompressiveresponsesincludingfailurepatternandfailureload.ThetwogradesofDyneema~?compositesexhibitsdifferentfailuremodes:adiffuse,sinusoidalbucklingpatternforDyneema~?HB50duetoitsweakmatrixconstituentandakinkbandforDyneema~?HB26duetoitsrelativelystrongermatrixconstituent.AneffectivefiniteelementmodelisusedtosimulatethecollapseofDyneema~?composites,andthesensitivityoflaminatecompressiveresponsestotheoveralleffectiveshearmodulus,interlaminarshearstrength,thicknessandimperfectionangleareinvestigated.Thechangeoffailuremodefromkinkbandtosinusoidalbucklingpatternbydecreasingtheinterlaminarshearstrengthisvalidatedbythefiniteelementanalyses.
简介:Thestrengthoflightweightconcreteundertriaxialcompressivestressisstudiedexperimentallywiththeconcretetriaxialapparatusdesignedbytheauthors,andiscomparedwiththatofnormalconcreteunderthesamestressstate.Ninety-five100mmcubesundertwentystressratiosaretested.Ascomparedwithnormalconcrete,itisfoundthatnotonlythemultiaxialcompressivestrengthoflightweightconcreteissmall,butalsotheratioofthemultiaxialcompressivestrengthtotheuniaxialcompressivestrengthissmall.Theinfluenceoftheintermediateprincipalstressonthemultiaxialstrengthoflightweightconcreteisdiscussed.Thestrengthcriteriawhichareexpressedintheprincipalstressesandtheoctahedralstressesrespectivelyareproposed.
简介:高压缩比率,高译码性能,和进步数据传播是为WebGIS的向量数据压缩算法的最重要的要求。满足这些要求,我们在场一条新压缩途径。这篇论文由把漂流坐标变换成整数坐标以多尺度的数据的产生开始。在屏幕上的变换的点和原来的点之间的距离在2个象素以内,这被证明,因此,我们的途径对顾客方面上的向量数据的可视化合适。整数坐标被传递给一个整数小浪变压器,并且高周波的系数由变压器生产了被正规哈夫曼代码编码。河数据和道路数据上的试验性的结果表明建议途径的有效性:为河数据的压缩比率罐头活动范围10%和20%为道路数据分别地。我们断定更多的注意需要被付到在包含一些点的弯曲之间的关联。
简介:IntermittentPneumaticCompression(IPC)hasbeenusedsuccessfullyforthepreventionofearlypostoperativedeepveinthrombosis(DVT).RecentlyIPChasbeendescribedforthetreatmentoflymphedema,chronicedema,recoveryfromlowerextremityulcersandtheenhancementofwoundhealing.ForgoodapplicationsofIPCinclinic,itisnecessarytostudyitseffectivemechanismfurther.Wemeasuredsome
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简介:MultistageVectorQuantization(MSVQ)canachieveverylowencodingandstoragecomplexityincomparisontounstructuredvectorquantization.However,theconventionalMSVQissuboptimalwithrespecttotheoverallperformancemeasure.Thispaperproposesanewtechnologytodesignthedecodercodebook,whichisdifferentfromtheencodercodebooktooptimisetheoverallperformance.Theperformanceimprovementisachievedwithnoeffectonencodingcomplexity,bothstorageandtimeconsuming,butamodestincreaseinstoragecomplexityofdecoder.
简介:Asimpleandadaptivelosslesscompressionalgorithmisproposedforremotesensingimagecompression,whichincludesintegerwavelettransformandtheRiceentropycoder.ByanalyzingtheprobabilitydistributionofintegerwavelettransformcoefficientsandthecharacteristicsofRiceentropycoder,thedivideandrulemethodisusedforhigh-frequencysub-bandsandlow-frequencyone.High-frequencysub-bandsarecodedbytheRiceentropycoder,andlow-frequencycoefficientsarepredictedbeforecoding.Theroleofpredictoristomapthelow-frequencycoefficientsintosymbolssuitablefortheentropycoding.ExperimentalresultsshowthattheaverageCompressionRatio(CR)ofourapproachisabouttwo,whichisclosetothatofJPEG2000.Thealgorithmissimpleandeasytobeimplementedinhardware.Moreover,ithasthemeritsofadaptability,andindependentdatapacket.Sothealgorithmcanadapttospacelosslesscompressionapplications.
简介:Inthispaper,thetechniqueofquasi-losslesscompressionbasedontheimagerestorationispresented.Thetechniqueofcompressiondescribedinthepaperincludesthreesteps,namelybitcompression,correlationremovingandimagerestorationbasedonthetheoryofmodulationtransferfunction(MTF).Thequasi-losslesscompressioncomestoahighspeed.Thequalityofthereconstructionimageunderrestorationisuptoparofthequasi-losslesswithhighercompressionratio.TheexperimentsoftheTMandSPOTimagesshowthatthetechniqueisreasonableandapplicable.
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简介:Westudythebucklingofaonefibercompositewhosematrixstifnessisslightlydependentonthecompressiveforce.Weshowthattheequilibriumcurvesofthesystemexhibitalimitloadwhentheinducedstifnessparametergetsbiggerthanathreshold.Thislimitloadincreaseswhenthestifnessparameterisincreasinganditisrelatedtoapossiblelocalizedpathinthepost-bucklingdomain.Suchachangeinthemaximumloadmaybeverydesirablefromastructuralstandpoint.
简介:小粒的材料在工业并且在自然是无所不在的。为小紧张,有弹性塑料、发育不全的组成的关系广泛地在设计实践被使用,但是他们不是内在的物理的重要思考。在解释材料的物理的一个统一热力学框架下面,小粒的稳固的水动力学(GSH)是向描述小粒的材料,不是仅仅像固体,而且像液体的行为的延期。在这份报纸,GSH的基础简短被对待然后简化了在triaxial压缩分析quasistatic变丑。计算压力紧张关系和容量的紧张与试验性的结果相比。在GSH的主要参数的影响,特别他们的生气联合影响,被分析,他们的物理意思进一步被澄清。在参数被校准以后,处于典型压力状态的计算压力价值被发现在22%测试价值以内。同时,精力驱散在triaxial压缩期间被分析。上述结果支持并且部分确定GSH。
简介:Ensuringahighmanufacturingtestqualityofanintegratedelectroniccircuitmandatestheapplicationofalargevolumetestset.Evenifthetestdatacanbefitintothememoryofanexternaltester,theconsequentincreaseintestapplicationtimereflectsintoelevatedproductioncosts.Testdatacompressionsolutionshavebeenproposedtoaddressthetesttimeanddatavolumeproblembystoringanddeliveringthetestdatainacompressedformat,andsubsequentlybyexpandingthedataon-chip.Inthispaper,weproposeascancellpositioningmethodologythataccompaniesacompressiontechniqueinordertoboostthecompressionratio,andsquashthetestdataevenfurther.Whilewepresenttheapplicationoftheproposedapproachinconjunctionwiththefan-outbaseddecompressionarchitecture,thisapproachcanbeextendedforapplicationalongwithothercompressionsolutionsaswell.Theexperimentalresultsalsoconfirmthecompressionenhancementoftheproposedmethodology.
简介:Surfaceoriginatedkinkbandsconsistofanimportantfailuremodeforfibre-reinforcedcompo-sitesundercompression.Themechanicalbehaviorofthefibrebridgingkinkbandsisexploredhereininthecontextofthepost-microbucklingtheory.Expressionsofbridgingforceareobtainedfortheentirepostbucklingprocessofthefibresexhibitingweakorstronghardening.Thepostbucklingformulationofthefibresisappliedtoyieldthetoughnessincrementduetotheadvancingkinkbands,andconsequentlyleadstoaquantitativepre-dictionontheoverallcompressivestressstraincurvesofthefibre-reinforcedcomposites.
简介:Inthepresentpaper,atheoreticalmodelisproposedtoanalyzethetransientbehaviorofsuppressionofrotatingstallinaxialcompressionsystemsthroughtheuseofanadditionaldistubance,Thegoverningequationsofthemodelareasetofsimultaneousnonlinearfirstorderpartialdifferentialequations,andfornumericalcalculations,asimpleexplicittimemarchingmethodcanbeused.Theinfluenceofsystemparametersonthesuppressioneffectivenessandtheinteractionbetweenrotatingstallandsurgehavebeendiscussedinitially.TheanslysisoftheinfluenceofsystemparameterspresentsthatboththeBparameterandaxisymmetriccomprssorcharacteristichavesignificanteffectonthestabilizationeffectivenessofacontrolstrategy.TheeffectivenessdecreasesasthevalueofBandthenumberofstagesorstageloadingofthecompressorincrease,Ithasbeenfoundthattheonsetflowrateofrotatingstallandsurgeinacompressionsystemmaybedifferent,andthereisastronginteractionbetweenthesetwokindsofinstabilities.TheonsetflowrateofpureonedimensionalsurgedependsonthevalueofBandaxisymmetriccompressorcharacteristic,besidestheslopeofthecompressorcharacteristic.Insomecases,whenrotatingstallwhichisthenaturalmodeofinstabilityinacompressionsystemissuppressedonedimensionalsurgecanoccur,Itoftenlimitstheeffectivenessofacontrolstrategytosuppressrotatingstall.Butwhensurgeisintiatedbyratatingstall,itisalsopossibletoinhibittheoccurrenceofsurgebysuppressingrotatingstallinacompressionsystem.