简介：针对接收天线接收的目标散射体的散射强度取决于目标相对于收发天线的位置、目标电性能参数以及目标几何形状的问题,提出一种将不同位置的目标对齐到参考位置的目标对齐框架。该框架创新地从BP（BackProjection）算法与线性波恩近似（BornApproximation,BA）电磁场逆散射数学模型关系入手,结合修正Green函数设计,推导出目标特征受多个参数耦合约束的去相关数学模型。基于电磁场仿真数据,从定性和定量两个角度验证所提出的目标对齐框架的有效性。

简介：

简介：AnintegratedinvestigationwascarriedoutduringlateApriltolateMayof2014inthecoastalareaofSouthJiangsuProvincetounderstandtheearlydevelopmentofgreentideintheYellowSeaanddiscoverthetemporalandspatialdistributionofgreenalgalmicro-propagulesandmacroalgaeattheearlystageofgreentide.Theresultsshowedthatgreenalgalmicro-propagulesdistributedinallstationsfromlateApriltolateMay,andmicro-propagulesofhighdensity(>300ind.L?1)concentratedintheadjacentPorphyraaquaculturearea.Floatingmacroalgaewereinitiallyobservedinthenorthernsurveyareas,andincreasedgradually.ThedominantspecieswasU.proliferainthefloatingmacroalgae,rangingbetween90%and100%.Theseawatersurfacetemperatureandsalinityintheabovementionedtimeperiodweresuitableforthegrowthofmacroalgae.ThisworkcanhelpgovernmenttostrengthenmanagementtoreducethebloomsofmacroalgaeinthecoastalareaofSouthJiangsuProvinceandalsofacilitatethedecision-makingformanagersattheearlystageofgreentide.

简介：Atpresent,greenurbanizationprocessisintheinitialstateinChina.Intheprocessofdevelopment,howtopromoteurbandevelopmentandurbanizationwillhighlyintegrated.Andtheecologicalenvironmentprotectionandeconomicdevelopmentisanurgentproblemtobesolved.Basedontheguidanceofdeepecology,thispaperstudiesthedevelopmentprocessofgreenurbanization;andliteraturereviewmethodandexemplificationmethodareadopted.Firstly,theconceptofgreenurbanizationisdemonstrated.Secondly,combinedwiththecurrentsituationofgreenurbanizationinChina,guidedbyanalysisofdeepecology,thechallengeforthedevelopmentofurbanizationisanalysed.Finally,basedonthedeepecologyguidedbyrevelation,thegreenurbanizationpathisputforward.

简介：Inthecontextofthenewurbanization,thecharacteristictown,asanewhotspottodevelopingrapidlytoexploretheindustry,humanities,communityintegrationtownmodel,aurbanizationandhigh-techindustrydevelopmentbooster,bythegovernmentanddevelopersattention.Atthesametime,thegreendevelopmentmodelappliestothecharacteristictownofindustrialupgradingandtransformation,guidingthefuturecharacteristictownofgreeneconomicindustrydevelopmentdirection.Thispaperstudiesthegreendevelopmentmodelofthecharacteristictown,andputsforwardtheimplementationofthegreenindustrythroughthegreeningindustrystructure,promotinggreenconsumptionandoptimizingthegreenmanagement.

简介：Underthenewnormaleconomy,themanufacturingindustryisdevelopingrapidlyasthefocusofeconomicdevelopmentinJiangsu.Itsrapiddevelopmenthasbroughtgreatopportunitiestooursociety,butatthesametime,greatchallengeshasbeenbroughttothenaturalenvironment.Theresourceconsumptionandenvironmentalpollutionproblemshavebecomeincreasinglyprominent.Inthefaceofthissituation,wemusttryeverymeanstoreducepollutionandsaveenergy.Therefore,thetransitiontrendofmanufacturingindustryinthefutureisboundtotakethegreeneconomyasthebackground.Thus,thispaperanalyzesthedrawbacksofthemanufacturingindustryinJiangsuprovince.Andthestatusoftraditionalmanufacturingenterprisesandadvantagesofgreenmanufacturingareanalyzed.Then,thepaperproposedtoexplorethepracticeofgreenmanufacturingmodefortheecologicalprotection,soastoachievetheindustrialtransformationandupgradingofmanufacturingindustryinJiangsuprovince.

简介：TosolvethenumericaldivergenceproblemofthedirecttimedomainGreenfunctionmethodforthemotionsimulationoffloatingbodieswithlargeflare,atimedomainhybridRankine-Greenboundaryelementmethodisproposed.Inthisnumericalmethod,thefluiddomainisdecomposedbyanimaginarycontrolsurface,atwhichthecontinuousconditionshouldbesatisfied.ThentheRankineGreenfunctionisadoptedintheinnerdomain.ThetransientfreesurfaceGreenfunctionisappliedintheouterdomain,whichisusedtofindtherelationshipbetweenthevelocitypotentialanditsnormalderivativefortheinnerdomain.Besides,thevelocitypotentialatthemeanfreesurfacebetweenbodysurfaceandcontrolsurfaceisdirectlysolvedbytheintegrationscheme.Thewaveexcitingforceiscomputedthroughtheconvolutionintegrationwithwaveelevation,byintroducingtheimpulseresponsefunction.Additionally,thenonlinearFroude-Krylovforceandhydrostaticforce,whichiscomputedundertheinstantaneousincidentwavefreesurface,aretakenintoaccountbythedirectpressureintegrationscheme.Thecorrespondingnumericalcomputercodeisdevelopedandfirstusedtocomputethehydrodynamiccoefficientsofthehemisphere,aswellasthetimehistoryofashipwithlargeflare;goodagreementisobtainedwiththeanalyticalsolutionsaswellastheavailablenumericalresults.ThenthehydrodynamicpropertiesofaFPSOarestudied.Thehydrodynamiccoefficientsagreewellwiththeresultscomputedbythefrequencymethod;theinfluenceofthetimeintervalandthetruncatedtimeisinvestigatedindetail.

简介：Becausemostpiezoelectricdeviceshaveinterfaceswithfluidinengineering,itisvaluabletostudythecoupledfieldbetweenfluidandpiezoelectricmedia.Asthefundamentalproblem,the3DGreen'sfunctionsforpointforcesandpointchargeloadedinthefluidandpiezoelectricbimaterialsarestudiedinthispaper.Basedonthe3Dgeneralsolutionsexpressedbyharmonicfunctions,weconstructedthesuitableharmonicfunctionswithundeterminedconstantsatfirst.Then,thecouplefieldinthefluidandpiezoelectricbimaterialscanbederivedbysubstitutionofharmonicfunctionsintogeneralsolutions.Theseconstantscanbeobtainedbyvirtueofthecompatibility,boundary,andequilibriumconditions.Atlast,thecharacteristicsoftheelectromechanicalcoupledfieldsareshownbynumericalresults.

简介：一般地，我们把形如y=xa的函数称为幂函数，其中x是自变量，a是常数，如y=x2、y=x1/3等都是幂函数．同时应特别注意以下几点：（1）只有形如y=xa的函数才是幂函数；（2）幂函数y=xa中的a是任意实数；（3）幂的底数是自变量．

简介：题：已知函数f（x）=ax3＋bx2＋cx＋d的一些自变量与对应函数值如下：

简介：格林功能方法(GFM)被利用分析在里面飞机强迫了传送液体的弄弯的管子的颤动，在外部刺激和增加的团和抑制比率的randomicity和分发被考虑的地方。Laplace变换被使用，并且有各种各样的边界条件的格林功能随后被获得。数字计算被执行在正切、光线的排水量上验证一些关键参数的现在的解决方案，和效果进一步被调查。有线性、非线性的运动限制的强迫的颤动问题也简短被讨论。方法能被散发学习与管子或更广泛的问题联系的强迫的颤动问题的另外的形式。

简介：AgreatamountoffoodbornepathogenswereGram-positive(G?)bacteria,athreattopublichealth.Inthisstudy,consideringthebindingabilityofnisintowardsG-bacteriaandthestablefluorescentabilityofEGFPprotein,afluorescentnisin–EGFPproteinprobewasconstructedbyageneengineeringmethod.NisinandEGFPwereusedasthereceptorandfluorophore,respectively,todetectG?bacteria.ThenisinandegfpgenewereamplifiedseparatelyaccordingtothesequencepublishedinGenBankusinguniqueprimers.ThetwogeneswereclonedintoapET-28b(?)vectorresultinginapET-28b(?)–nisin–egfpvector.ThevectorwastransferredintoEscherichiacoli(E.coli)BL21(DE3)forexpression.Theexpressedproteinwasextracted,purifiedbyaNi–NTAcolumn,andthentestedbytheSDS-PAGEmethodtoconfirmitsmolecularweight.Listeriamonocytogenes(L.monocytogenes),Staphylococcusaureus(S.aureus),andMicrococcusluteus(M.luteus)wereusedastherepresentationsofG?bacteria.E.coliO157,representingthegram-negative(G-)bacteria,wasusedasanegativecontrol.Thebindingspecificityoftherecombinantproteinwasperformedontwotypesofbacteriaandthendetectedthroughfluorescentmicroscopy.Theresultsindicatedthatthenisin–EGFPprobecoulddetectG?bacteriaat108CFU/mL.

简介：有些同学在解答函数题时，往往因为考虑不周，出现多方面的错误，下面就让我们一起将一些函数问题的易错之处纠正过来．

简介：

简介：与变化的流行延期敏感的服务，怎么为活动用户(亩)保证延期得到要求是为在绿云收音机存取网络(Crun)的downlinkbeamformer设计的大挑战。在这份报纸，我们与分离的率改编认为延期知道的downlinkbeamforming的问题最小化Crun的电源消费。我们经由一个混合整数处理这个问题非线性的节目(MINLP)，然后再用形式表示是的MINLP问题一个混合整数秒顺序锥程序(MI-SOCP)，它当整数变量作为连续的被放松时，是一个凸的程序。把明确的表达基于这，一个放气算法，其计算复杂性是多项式，被建议导出非最优的答案。模拟结果被介绍验证我们的建议算法的有效性。

简介：含绝对值函数y=｜x-a｜的图象是“v”型折线，稍复杂一点的是y=｜x-a｜＋｜x-b｜（a≠b）是槽型折线；y=｜x-a｜＋｜x-b｜则是“z”型折线，

简介：本文根据初中数学教学的总目标，论述了在课堂教学中渗透函数思想方法的必要性和可行性，提出了导学“三原则”，并结合教学实例介绍了渗透函数思想方法的几个基本途径。

简介：

简介：函数是初中数学的重要组成部分，学生不仅学会解题方法，更要掌握其思想内涵，并且能够将函数知识运用到现实生活中。在实际初中数学教学中，由于知识比较抽象，学生在学习过程中容易出现这样那样的问题，影响了教师的教学质量与学生的学习效率。

简介：通过引导学生抽象概括具体实例的共同本质特征，经历函数概念的形成过程，并通过“设疑辨析”环节进一步精致函数的概念．