简介:Theaimofthisinvestigationwastodefinetheeffectivenessofnon-contactdryingusingultrasonicvibrations.Diskradiatorswereusedforcarryingoutexperiments,andaspecialdryingchamberwasdesignedtoprovideresonantamplificationofultrasonicvibrations(from130to150dB).Dryingofginsengandothervegetablesdemonstratedthattheapplicationofultrasonicvibrationsreducedpowerinputsby20%incomparisonwithconvectivedrying.Italsoledtoadecreaseof6%infinalmoisturecontent,ifthedurationofdryingwasconstant.Thelevelofintensificationofultrasonicdryingwashigh(upto50gfor1kgofdryingmaterial),whichhelpedtolowerthetemperatureofthedryingagentandimprovethequalityofthedriedproducts.
简介:Accordingtothestructure-basedforestmanagementtheory,theappraisalindicessystemofnaturalforestmanagementefficiencywasestablishedfromspatialutilization,speciesdiversity,constructivespeciescompetitionandtreecomposition,whichcouldbeusedtodepictstandstatus,anditsmetewandwasgiven.RelativeweightwasendowedbyTheAnalyticHierarchyProcess(AHP),andthentheconceptionofnaturalforestmanagementefficiencycomprehensiveappraisalindexwasputforwardforthefirsttimeandappliedtofourdifferentsamplingplotsofnaturalforest,threeofthemfromDongdapoforestregion,Jiaohe,Jilinprovince,andonefromBaihuaforestarea,Xiaolongshan,Gansuprovince,China.Theresultsareasfollowing:thestandstatuswasobviouslyimprovedafterbeingmanagedandplotA,Bgotamarkof"medium"whileCandDwere"perfect".Fromhightolow,thearrangementofforestmanagementefficiencycomprehensiveappraisalindexwasC>D>A>B.Thisappraisalresultabidedbythephenomenondetectedinthepracticalfield.Theforestmanagementefficiencycomprehensiveappraisalindexbroughtupinthispapercouldbetakenasawayofcomprehensivequantitativechangeofstandstatewhichdirectlyreflectstheeffortofforestmanagementandaffordsscientificbasisofnaturalforestmanagementeffort.
简介:ONBAHADURASYMPTOTICEFFICIENCYINASEMIPARAMETRICREGRESSIONMODEL¥LIANGHua;CHENGPing(InstituteofSystemsScience,AcodemiaSinica,Bei...
简介:Theset-valuedoptimizationproblemwithconstraintsisconsideredinthesenseofsuperefficiencyinlocallyconvexlineartopologicalspaces.Undertheassumptionofic-cone-convexlikeness,byapplyingtheseperationtheorem,Kuhn-Tucker's,Lagrange'sandsaddlepointsoptimalityconditions,thenecessaryconditionsareobtainedfortheset-valuedoptimizationproblemtoattainitssupereffcientsolutions.Also,thesufficientconditionsforKuhn-Tucker's,Lagrange'sandsaddlepointsoptimalityconditionsarederived.
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简介:Thefemtosecondopticaltrappingcapabilityandtheeffectoffemtosecondlaserpulsesoncellviabilitywerestudied.Themaximumlateralvelocityatwhichtheparticlesjustfailedtobetrapped,togetherwiththemeasuredaveragetrappingpower,wereusedtocalculatethelateraltrappingforce(Q-value).Theviabilityofthecellsafterfemtosecondlasertrappingwasascertainedbyvitalstaining.MeasurementoftheQ-valuesshowsthatfemtosecondopticaltweezersarejustaseffectiveascontinuouswaveopticaltweezers.Theexperimentsdemonstratethatthereisacriticallimitforexposuretimeateachcorrespondinglaserpoweroffemtosecondopticaltweezers,andfemtosecondlasertweezersaresafeforopticaltrappingatlowpowerwithshortexposuretime.
简介:合作中继技术能极大地改进多重输入和多重输出(MIMO)的能力无线系统。为各种各样的中继协议的transmit力量分配(TPA)策略为改进精力效率变得很重要。这篇文章在中继系统的MIMO合作社建议新奇TPA计划。二种不同情形被考虑。一个人是在的混合decode-and-forward(HDF)协议零力量(ZF)过程被操作中继,并且其它是有继电器节点和天线选择策略的decode-and-forward(DF)协议。模拟结果显示建议计划能由利用继电器连接的性质引起重要电容获得。另外,当有更少继电器节点的相等的TPA使用了,在HDF系统的建议TPA计划能完成一样的能力。最后,当继电器节点的分发范围膨胀时,有建议计划的电容获得增加。
简介:Theprecipitationefficiencyanditsrelationshiptophysicalfactorsareexaminedbyanalyzingatwo-dimensionalcloud-resolvingmodelsimulationduringTOGACOAREinthisstudy.Thebasicphysicalfactorsincludeconvectiveavailablepotentialenergy,water–vaporconvergence,verticalwindshear,cloudratio,seasurfacetemperature,airtemperature,andprecipitablewater.Precipitationefficienciesdonotshowacloserelationshiptoairtemperaturenortoseasurfacetemperaturenortoprecipitablewater.Theprecipitationefficiencyincreasesasthewater–vaporconvergencerateincreasesandverticalwindshearweakens,whereasitdecreasesastheconvectiveavailablepotentialenergydissipatesandanvilcloudsdevelop.
简介:以便,水的动物的稳定的鳗状的游泳运动才是完全反应的没有网旋涡醒来被让下游。这是对在旋涡流的地方,鱼游泳的carangiform和tunniform是从尾巴,鳍,和身体流。但是在那里,动物运动是这在最大化推进的效率下游地生产部分旋涡取消。在鳗家庭的鳗状的游泳特征,以便旋涡流根本不发生,游泳运动才被动物设置。然而,在这种情况中的推进的戳是在运动振幅的更高的顺序,以便相对大的卷被需要生产相对小的戳;鳗状的游泳者的速度不到carangiform和tunniform,它首先发展经由提起过程订戳。实时七鳃鳗上的试验的结果与假定没有醒来假设的理论预言相比。二维的分析首先被执行设置这个概念。这被三维的分析用苗条身体的理论跟随。苗条身体的理论被其它在学习鳗状的游泳使用了,当它理想地被适合到七鳃鳗和另外的似鳗的动物的几何学。尽管有物理复杂性,在这条新途径之间的协议基于wakeless游泳和实验的假设显著地好。