学科分类
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8 个结果
  • 简介:我们计算在光滑的度量标准的情况下在FJRW理论定义的真实Cauchy-Riemann操作员的索引。为圆柱的度量标准,我们在加权的Sobolev空格学习在Witten地图和重量的线性化的操作符的索引之间的关系。

  • 标签: 加权SOBOLEV空间 计算 线性算子 度量值 运算符 圆筒形
  • 简介:1.RareearthpriceindexchangesTheAssociationofChinaRareEarthIndustryhasintroducedRareEarthPriceIndex(REPI)systemtoassessrareearthmarket.Thesystemadoptssalesvolumeanddealingpriceof18kindsofrareearthoxides.Theyear2010isregardedasthebaseperiodandthebasepriceindexofrareearthis100.Chart1showsthe

  • 标签: 稀土市场 价格指数 市场趋势 指数和 稀土氧化物 行业协会
  • 简介:Aswitchingvariabilityindex(SVI)constantfalsealarmrate(CFAR)detectorisproposedforimprovingthedetectionperformanceofVI-CFARdetectorsinmultipletargetsbackgrounds.Whenthepresenceofnon-homogeneityinCFARreferencewindowsisindicatedbyaVI-CFARdetector,aswitchingCFARdetectorisintroducedtooptimizetheperformanceoftheVI-CFARdetectorinhomogeneous,multipletargetsandclutteredgebackgrounds.ThestructureandparametersselectionmethodoftheSVI-CFARdetectorispresented.ComparisonswithclassicCFARdetectorsandrecentlyproposeddetectorsarealsogiven.TheoreticalanalysisandsimulationresultsshowthatSVICFARdetectormaintainsthegoodperformanceoftheVI-CFARdetectorinhomogeneousandclutteredgebackgrounds,whilegreatlyimprovingthecapacityofanti-multitargets.

  • 标签: 恒虚警检测器 CFAR检测器 变异 多重 基础 切换
  • 简介:Withthearrivaloftheeraofpersonalautoconsumption,residentsareenjoyingtheconvenienceoftravel;however,problemssuchasenvironmentalprotection,transportation,purchasingrestrictionareplaguingconsumersatthesametime.Asaneffectivealternativetoconventionalvehicle,electricvehicleinrecentyearshasbeenwidelyconcernedduetoitscharacteristicsofenergysavingandenvironmentalprotection.ToidentifythekeyinfluentialfactorsinthedevelopmentofEVindustryinChinaisconducivetoformulatingreasonableindustrialdevelopmentstrategyandmeetingmarketdemandofconsumers.Inthispaper,thekeyfactorsinthedevelopmentofEVindustryareobtainedbyanalyzingBaiduIndexineachtimeperiod.

  • 标签: 汽车产业 电动汽车 影响因素 百度 汽车消费 环境保护
  • 简介:Thispaperprovidesanoverviewoftheideasandmethodsoftheassessmentofseismicintensitybasedonremotesensinganddescribesthemodelsusedtoassesstheremotesensingbasedsyntheticseismicdamageindexandseismicintensity.Withthedataofdamageinformationextractedfromthehigh-resolutionaerialimagesintheearthquake-strickenareas(Jiegutown,Yushucity,Qinghai)ofthe2010MS7.1Yushuearthquake,andthedataobtainedthroughpost-earthquakefieldinvestigation,theseismicdamagedegreeandseismicintensityhavebeenestimated.TheanalysisoftheresultsshowsthattheseismicintensityinYushucityisestimatedasIXthroughtheRSassessmentmethod,whichisconsistentwiththeresultestimatedaccordingtothegroundsurveys.TheresultsarediscussedinthelastpartofthepaperandindicatethattheRStechniquesareexpectedtobeoneofthemainmethodsusedtoestimatetheseismicintensityvaluesintheemergencystage.

  • 标签: 地震烈度 震害指数 评估 遥感 玉树 合成
  • 简介:WediscussthenonlinearSchrdingerequationwithvariablecoefficientsin2Dgraded-indexwaveguideswithdifferentdistributedtransversediffractionsandobtainexactbrightanddarksolitonsolutions.Basedonthesesolutions,wemainlyinvestigatethedynamicalbehaviorsofsolitonsinthreedifferentdiffractiondecreasingwaveguideswiththehyperbolic,GaussianandLogarithmicprofiles.Resultsindicatethatforthesameparameters,theamplitudeofbrightsolitonsintheLogarithmicprofileandtheamplitudeofdarksolitonsintheGaussianprofilearebiggestrespectively,andtheamplitudeinthehyperbolicprofileissmallest,whilethewidthofsolitonshastheoppositecase.

  • 标签: 渐变折射率波导 孤子解 同分布 衍射 二维 非线性方程
  • 简介:Duetotheiruniqueadvantagesinphysicsandbiology,heavyionbeams,withhighmutationrateandwidemutationspectrum,havebeenwidelyusedinplantbreedingasanovelandefficientphysicalmutagen.Inthiswork,Arabidopsisthaliana(197#),whichdisplayeddecreasedfertility,wasinducedbycarbonionbeamsacceleratedbytheHeavyIonResearchFacilityinLanzhou(HIRFL).InordertodeterminethediscrepanciesbetweenWTandmutantplants,aseriesofdevelopmentindexeswereanalyzedduringthereproductivegrowthstage.

  • 标签: REPRODUCTIVE Analysis ARABIDOPSIS