简介：Stiffeneristheimportantmissilestructuretoensurethestructuralstrengthofthemissile.Inordertoimprovethedesignefficiencyandthequalityofthemissilestiffener,themethodsofmissilestiffenerrapidmodelingandanalysisareproposed.First,theproblemsoftraditionalmanualmodelingofthestiffenerareanalyzed.Accordingtotheproblemsandactualrequirementofmodeling,volumedecompositionmethodisusedtodividethestiffenerintotheuppersection,thelowersectionandthewebinorderforfeatureanalysisandparameterextraction.ThenbasedontheparametersthebasicunitdecomposedaboveiscreatedforBooleanoperationtoestablishthestiffener.Finally,arapidstiffenermodelingandanalysisprogramweredevelopedbasedonUGOpenAPI,themodelingandanalysisresultvalidatesthefeasibilityofthemethod.

简介：RapidgrowthprocessingofKDPcrystalswasimprovedbyemployingcontinuousfiltrationtoeliminatebulkdefects.TheperformancesoftheKDPcrystals,includingscatteringdefects,laserdamageresistanceandtransmittance,weremeasuredandanalyzed.Comparedwithrapid-grownKDPwithoutcontinuousfiltration,thetransmittanceinthenearinfraredwasincreasedbyatleast2%,almostallof‘micronsize’defectswereeliminatedand‘sub-micronsize’defectsweredecreasedbyapproximately90%.Laserdamagetestingrevealedthatthelaser-induceddamagethresholds（LIDTs）,aswellastheconsistencyoftheLIDTsfromsampletosample,wereimprovedgreatly.Moreover,itidentifiedthat‘micronsize’defectsweretheprecursorswhichinitiatedlaserdamageatrelativelowerlaserfluence(4–6Jcm-2),andtherewasalowercorrelationbetweensmallersizescatteringdefectsandlaserdamageinitiation.TheimprovedconsistencyintheLIDTs,attributedtoeliminationof‘micronsize’defects,andLIDTenhancementoriginatedfromthedecreasedabsorptionoftheKDPcrystals.

简介：Thewindenergyindustryhasbeengrowingrapidlyduringthepastdecades.Alongwiththisgrowth,engineeringproblemshavegraduallyemergedinthewindpowerindustry,includingthoserelatedtothestructuralreliabilityofturbinetowers.Thisstudyproposesarapidseismicanalysismethodologyforexistingwindturbinetowerstructures.Themethodisdemonstratedandvalidatedusingacasestudyona1.5MWtubularsteelwindturbinetower.Threefiniteelement(FE)modelsaredevelopedfirst.Fieldtestsareconductedtoobtaintheturbinetower’svibrationalcharacteristics.Thetestsinclude(1)remotelymeasuringthetowervibrationfrequenciesusingalongrangelaserDopplerVibrometerand(2)monitoringthetowerstructuralvibrationbymountingaccelerometersalongtheheightofthetubularstructure.In-situmeasurementsareusedtovalidateandupdatetheFEmodelsofthewindturbinetower.WiththeupdatedFEmodelthatrepresentsthepracticalstructuralconditions,seismicanalysesareperformedtostudythestructuralfailure,whichisdefinedbythesteelyieldingofthetubulartower.Thisresearchisanticipatedtobenefitthemanagementoftheincreasingnumberofwindenergyconvertersbyprovidinganunderstandingoftheseismicassessmentofexistingtubularsteelwindturbinetowers.

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简介：AnindexingmethodforrapidevaluationoftheseismicvulnerabilityofinfilledRCframebuildingsinJordanisproposed.Themethodaimsatidentifyinglowandmediumriseresidentialbuildingsassafeorinneedoffurtherdetailedevaluation.Followingarapidvisualscreening,thebuildingisassignedaBasicCapacityIndex(BCI);fiveperformancemodifiersareidentifiedandmultipliedbytheBCItoarriveattheCapacityIndex(CI)ofthebuilding.ACapacityIndexlowerthanalimitCIvalueindicatesthatthescreenedbuildingcouldexperiencemoderateearthquakedamagewhereasahighervalueimpliesthatminordamage,ifany,wouldtakeplace.Toestablishthebasicevaluationparameters;fortyRCframebuildingswereselected,designedandanalyzedusingstaticnonlinearanalysisandincorporatingtheeffectofinfillwalls.Effectsofseismicity,localsiteconditions,horizontalirregularities(setbacksandre-entrantcorners),verticalirregularities(softstoryatgroundfloorlevel)andoverhangsontheseismicperformanceoflocalbuildingswereexamined.Assessmentformsweredesignedandusedtoevaluateandrank112samplebuildings.About40%ofthesurveyedbuildingswerefoundtobeinneedofdetailedevaluationtobetterdefinetheirseismicvulnerabilities.

简介：<正>India,locatedintheSouthernAsiansubcontinent,isbotharisingpowerandadevelopingcountry.IndiaisanimportantneighboringcountryofChinaandisplayingamoreandmoreimportantroleinthestageofmultilateralaffairs.IntheoveralldiplomaticlayoutofChina,Indiaoccupiesanextremelyimportantstatus.Theestablishment

简介：Wesuccessfullyemployanautomaticcentroidmomenttensor(CMT)inversionsystemtoinfertheCMTsolutionsoftheFebruary12,2014MS7.3Yutian,Xinjiangearthquakeusingnear-fieldseismicwaveforms(4°<△<12°)observedbythevirtualChinaseismicnetworks,whichhavebeenrecentlysetup.Theresultsindicatethatthiseventoccurredonaruptureplane(strike243°,dip70°,andrake-18°),showingleft-lateralstrike-slipfaultingwithaminornormal-faultingcomponent.Thecentroidinthehorizontaldirectionislocatednearly13kmeastoftheepicenter(36.123°N,82.499°E),andthebest-fittingcentroiddepthisaround10km.Thetotalscalarmoment,M0,isretrievedwithanaveragevalueof3.05×1019N·m,correspondingtomomentmagnitudeMW6.92.Mostoftheenergyisreleasedwithinabout14s.Moreover,wediscussaboutthepotentialapplicationofthissysteminearthquakedisasterdecision.

简介：Foraccuracyandrapidityofaudioeventdetectioninthemass-dataaudioprocessingtasks,agenericmethodofrapidlyrecognizingaudioeventbasedon2D-HaaracousticsuperfeaturevectorandAdaBoostisproposed.Firstly,itcombinescertainnumberofcontinuousaudioframestobean'acousticfeatureimage',secondly,usesAdaBoost.MHorfastRandomAdaBoostfeatureselectionalgorithmtoselecthighrepresentative2D-Haarpatterncombinationstoconstructsuperfeaturevectors;thirdly,analyzesthecommonalityanddifferencesbetweensubcategories,thenextractscommonfeaturesandreducesdifferentfeaturestoobtainagenericaudioeventtemplate,whichcansupporttheaccurateidentificationofmultiplesub-classesanddetectandlocatethespecificaudioeventfromtheaudiostreamaccurately.Experimentalresultsshowthattheuseof2D-Haaracousticfeaturesupervectorcanmakerecognitionaccuracy5%higherthanonesthatMFCC,PLP,LPCCandothertraditionalacousticfeaturesyielded,andcanmakethetrainingprocessing7-20timesfasterandtherecognitionprocessing5-10timesfaster,itcanevenachieveanaverageprecisionof93.38%,anaveragerecallof95.03%undertheoptimalparameterconfigurationfoundbygridmethod.Aboveall,itcanprovideanaccurateandfastmass-dataprocessingmethodforaudioeventdetection.

简介：简明比喻，‘；免疫系统装载了gun'，被用来在能在需求上几乎立即被释放与侵略者作斗争的能分泌的小粒由于他们大量有势力支持inflammatory和抗菌剂调停人的存储描述桅杆房间(MC)的角色。在主人环境定位了边界并且与模式识别受体的一个军火库装备了，MC被注定是渗透endothelial和上皮的表面的病原体的快速的天生的传感器。尽管在抗菌剂和antiparasitic防卫的MC的重要性长被欣赏了，他们在对病毒的感染发出报警的角色仅仅最近被注意了。cytomegalovirus(CMV)上的工作在鼠科的模型的感染在在CMV的天生、适应的有免疫力的监视之间的新奇串音轴作为播放器揭示了MC在MC，它与MCdegranulation和chemokineCCL5的版本被联系的那感染，提高保护的CD8T房间的招募到病毒复制的血管外的地点，明确地到肺interstitium和牙槽的上皮。这里，我们由响应主人感染为MC激活和作为结果的degranulation调查条件阐述了这些研究。令人惊讶地，数据揭示了MC激活的二个时间地并且机械学地不同的波浪：取决于TLR3/TRIF发信号并且由没包含TLR3/TRIF发信号的MC的直接感染推迟了激活的几乎立刻的间接激活。产出有选择地从MC发源的表示eGFP记者病毒的房间类型特定的Cre再结合识别了是的MC一在vivo新，生产鼠科的CMV感染的第一点击的目标房间。