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243 个结果
  • 简介:Abstract.OnthebasisofclassificationofgeographicalpropertiesarollingdevelopmentgoalprogrammingmodelisformulatedincorrespondencewiththeecopatterngroupinFour-LakeArea.Inthismodel,thecontrolofschistosomiasisandstrengthen-Lugofthedrainage-storagefunctionarebothregardedasecologicalmeasuresduringtheprocessofmulti-year(r0)ecologicaleconomicrollingdevelopmenttomaketheecoagrlculturalsysteminthisareaintoastablyoperating,ordered,andgoodcyclicsystemunderthesupportofsomecontrollablefactors.

  • 标签: 血吸虫病控制 四湖地区 中国 数学模型 约束条件 生态经济学
  • 简介:Chinabegantheresearchanddevelopmentofrenewableenergygenerationsince1970s,inparticularintheEighthFive-yearPlanperiod,theStatemadecloserattentiontotheresearchanddevelopmentofrenewableenergy,thereforethetechnicallevel,applicationscaleandeconomic,socialbenefitshaveseengreaterprogress.Thecombinedcapacityofrenewableenergygenerationreached100MWattheendof1994.Anditisplannedacombinedcapacityof1236MWwillbetargetedfortheyear2000.

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  • 简介:Thesurface-relatedmultipleelimination(SRME)methodisbasedonfeedbackformulationandhasbecomeoneofthemostpreferredmultiplesuppressionmethodsused.However,somedifferencesareapparentbetweenthepredictedmultiplesandthoseinthesourceseismicrecords,whichmayresultinconventionaladaptivemultiplesubtractionmethodsbeingbarelyabletoeffectivelysuppressmultiplesinactualproduction.ThispaperintroducesacombinedadaptivemultipleattenuationmethodbasedontheoptimizedeventtracingtechniqueandextendedWienerfiltering.ThemethodfirstlyusesmultiplerecordspredictedbySRMEtogenerateamultiplevelocityspectrum,thenseparatestheoriginalrecordtoanapproximateprimaryrecordandanapproximatemultiplerecordbyapplyingtheoptimizedeventtracingmethodandshort-timewindowFKfilteringmethod.AfterapplyingtheextendedWienerfilteringmethod,residualmultiplesintheapproximateprimaryrecordcanthenbeeliminatedandthedamagedprimarycanberestoredfromtheapproximatemultiplerecord.ThismethodcombinestheadvantagesofmultipleeliminationbasedontheoptimizedeventtracingmethodandtheextendedWienerfilteringtechnique.Itisanidealmethodforsuppressingtypicalhyperbolicandothertypesofmultiples,withtheadvantageofminimizingdamageoftheprimary.Syntheticandfielddatatestsshowthatthismethodproducesbettermultipleeliminationresultsthanthetraditionalmulti-channelWienerfiltermethodandismoresuitableformultipleeliminationincomplicatedgeologicalareas.

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  • 简介:Startingfromthevariableseparationsolutionobtainedbyusingtheextendedhomogenousbalancemethod,anewclassofcombinedstructures,suchasmulti-peakonandmulti-dromionsolution,multi-compactonandmultidromionsolution,multi-peakonandmulti-compactonsolution,forthe(2+1)-dimensionalNizhnik-Novikov-Veselovequationarefoundbyselectingappropriatefunctions.Thesenewstructuresexhibitnovelinteractionfeatures.Theirinteractionbehaviorisverysimilartothecompletelynonelasticcollisionsbetweentwoclassicalparticles.

  • 标签: 组合结构 同系平衡系统 非线性物理 非弹性碰撞
  • 简介:Wedevelopedaone-dimensionalhybridmodeltosimulatetheDC/RFcombineddrivencapacitivelycoupledplasmaforargondischarges.ThenumericalresultsareusedtoanalyzetheinfluenceoftheDCsourceontheplasmadensitydistribution,ionenergydistributions(IEDs)andionangledistributions(IADs)onboththeRFandDCelectrodes.TheincreaseinDCvoltagedrivesmorehigh-energyionstotheelectrodeappliedtotheDCsource,whichmakestheIEDsattheDCelectrodeshifttowardshigherenergy,andthepeaksintheIADsshifttowardssmallangleregions.Atthesametime,italsodecreasestheionenergyattheRFelectrodeandenlargestheincidentanglesoftheions,whichstriketheRFelectrode.

  • 标签: 放电等离子体 直流电源 混合模型 驱动器 射频 模拟
  • 简介:Towardstheanalysisofthedevelopmentalsituationofwindpowergenerationandelectricvehicles,anovelideaforstabilizingthefluctuationofwindfarms’outputbytheuseofbatteryswappingstationsofelectricvehiclesisputforwardinthispaper,toeffectivelyalleviatetheimpactofgrid-connectedoperationofwindfarmsonthepowersystemwhilepromotingthefieldoperationofchargingandbatteryswappingstations.Abatteryswappingstationistreatedasacapacity-variableenergystoragepowerstation,connectedtotheoutputterminalofawindfarm.AcombinedoperationmodelforwindfarmandbatteryswappingstationisestablishedbasedontheMATLAB/SIMULINKsimulationplatformandthecontrolstrategyisproposedfortheoperationofbatteryswappingstations.Thesimulationresultsshowthattheintroductionofabatteryswappingstationcaneffectivelystabilizethefluctuationofwindfarmoutput.

  • 标签: 电动汽车电池 风电场 联合作战 SIMULINK MATLAB 操作模式
  • 简介:观察点的本地选择的治疗学的效果的目的在面部痉挛的处理与腹的针灸结合了。美容的八十个盒子痉挛的方法随机被划分成处理组和控制组,在每个组的40个盒子,由简单地与本地选择的点和本地点相结合的腹的针灸分别地对待。在处理的30个会议以后,治疗学的效果被评估。在treatrnent组,的结果全部的有效的率到达了92.5%,药品率75.0%;当时在控制组,,全部的有效的率是80.0%,药品与二个组(P0.05)之间的重要差别评估55.0%。腹的针灸的治疗学的效果与本地点相结合的结论比在面部痉挛的处理的点的简单本地选择的优异。

  • 标签: 面部痉挛 肌肉痉挛 针刺疗法 取穴 穴位 腹针
  • 简介:ThispaperpresentstheHillinstabilityanalysisofTensionLegPlatform(TLP)tetherindeepsea.The2-Dnonlinearbeammodel,whichisundergoingcoupledaxialandtransversevibrations,isapplied.ThegoverningequationsarereducedtononlinearHillequationbyuseoftheGalerkin'smethodandthemodessuperpositionprinciple.TheHillinstabilitycharteduptolargeparametersisobtained.AnimportantparameterMisdefinedandcanbeexpressedasthefunctionsoftetherlength,theplatformsurgeandheavemotionamplitudes.Someexamplestudiesareperformedforvariousenvironmentalconditions.Theresultsdemonstratethatthenonlinearcouplingbetweentheaxialandtransversevibrationshasasignificanteffectontheresponseofstructure.ItneedstobeconsideredfortheaccuratedynamicanalysisoflongTLPtethersubjectedtothecombinedplatformsurgeandheavemotions.

  • 标签: Hill不稳定性 参数振动 TLP 横向振动
  • 简介:在中国为存储谷物的害虫管理联合微生物引起的杀虫剂和昆虫parasitoid的适用性用实验室试金被评估。为这个目的,在杆菌thuringiensis(Bt)之间的相互作用,使喝醉Bt的主人幼虫和parasitoidHabrobracon司青春的女神岩山(说)(Hymenoptera:Braconidae)对PlodiainterpunctellaHübner被测试(鳞翅目:Pyralidae)。Bt或H。独自引起41.67%的司青春的女神岩山和35.35%P。interpunctella幼虫的死亡分别地。Btparasitoid显著地联合了处理P的增加的死亡。interpunctella(86%)。H的子孙开发。司青春的女神岩山依赖于它到Bt的危险性。更少parasitoids从Btparasitoid出现了比在non-Bt处理联合了处理。自从Bt没阻止parasitoid开发,有Bt和parasitoid版本的一个联合处理不管多么能对P生产更好的保护。interpunctella比任何一个处理当单身地使用了时,因为他们的致命的效果是到对方的添加剂。

  • 标签: 苏云金芽孢杆菌 茧蜂科 生物控制 BT基因 合并 寄生昆虫
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  • 简介:当前基于身份(标志)cryptosystem缺乏两大政党的认证和用户的私人钥匙的机制分发。一些基于标志的signcryption计划和基于标志的证实的关键协议协议被介绍了,但是他们不能完全解决这个问题。一个新奇基于标志的认证计划基于基于标志的加密(IBE)和指纹哈希方法被建议在IBE计划解决困难,它包括证实发送者的消息接收装置,证实用户并且把私人钥匙传给他们的信任权威(TA)。而且,计划从终端扩大指纹认证的应用程序到网络并且免于指纹数据制造。指纹认证方法由二个因素组成。这个方法联合一个标志例如,给USB钥匙调音,与用户由混合有指纹特征的一个假散乱数字的指纹回锅肉丁。安全和试验性的效率满足实际应用的要求。

  • 标签: ID识别 编码 双线性配对 指纹鉴别
  • 简介:Thetraditionalevaluationofenergyconsumptionmostlyintroducespollutantsasanegativeeconomicoutputintoevaluatingmodel,ignoringtheconfigurationrelationshipamongtheenergyinput,pollutantsaswellaseconomicoutput.Thispaperconsiderstheoverallprocessofenergyconsumptionandconstructsanevaluationindicationsystemofenergyconsumptionlevelcombinedwithendogenouspollutantsbasedonentropytopsismethod,thenmakesempiricalresearch.TheresultsshowthatChina'senergyconsumptionlevelpresentsafluctuantriseinthepremiseofemission.Energyconsumptionleveldependsontherelationshipamongenergyinput,pollutantsandeconomicoutput.Theraiseofenergyconsumptionlevelshouldnotincreaseeconomicoutputandreducepollutantemissionattheexpenseofenvironment.Finally,thewholepaperputsforwardthecountermeasurestoimprovetheoveralllevelofenergyconsumption.

  • 标签: 污染物排放 能源消耗 评价模型 TOPSIS 中国 TOPSIS方法
  • 简介:Anevaluationmodelofaninternationalventureinvestmentprojectonthebasisoffuzzymatter-elementandcombinedweightmethodsisintroduced.First,thecompoundfuzzymatter-elementofoptimalsubordinatedegreeisconstructedontheprincipleofthebigger-more-optimalortheless-more-optimaldependingontheactualevaluationindicators,andcombinedwithstandardfuzzymatter-elementtoformadifference-squarefuzzymatter-element.Secondly,acombinedweightiscalculatedbybothinformationent...

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