简介：Inordertoreducenursingintensityandimprovefreedomoftheelderlyandthedisabled,amulti-functionnursingwheelchairwhichcanswitchchairtobedandrealizemanykindsofposturetransformationisdesigned.Thispaperintroducesthemechanicalstructuredesign(positionadjustmentmechanismandvariablewheelbasemechanism)andcontroldesignofposturetransformationunitofmultifunctionalnursingwheelchair.

简介：ThisarticledesribesthepreliminarydesignofthetriggersystemfortheupdatingbeijingSpectrometeratBeijingElectronPstironCollider,including,backgroundsstudy,eventestimation,newtechniqueslikepilelinetobeusedinthetrigger,andtheprincipleandconsiderationinthetriggerdesign.

简介：ThispaperintroducesaheterogeneousdistributeddatabasesystemcalledLSZsystem,whereLSZisanabbreviationofLiShizhen,anancientChinesemedicalscientist.LSZsystemadoptsclusterasdistributeddatabasenode(orsite).Eachclusterconsistsofoneofseveralmicrocomputersandoneserver.Tepaperdescribesitsbasicarchitectureandtheprototypeimplementation,whichincludesqueryprocessingandoptimization,transactionmanageranddatalanguagetranslation.ThesystemprovidesauniformretrieveandupdateuserinterfacethroughglobalrelationaldatalanguageGRDL.

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简介：在这篇文章，基于最不方形的评价，为间接学习结构predistorter的一个递归的算法被介绍。模拟结果显示出所有多项式predistorter的非线性的术语，高顺序(比7th顺序高)非线性的术语是那么次要的他们能在实际predistorter被省略设计。那么，与高顺序的多项式构造predistorter是不必要的，并且算法将总是是稳定的。进一步的结果证明甚至当15th顺序多项式模型被使用时，算法在10次重复以后是会聚的，并且它能由64dB改进20MHz带宽信号的外面乐队光谱，与一1.2???????????????儠卯吗？？

简介：ManyInternet-GIShavebeenimplementedonthewebandtheyareincreasinglybecominganimportantpartofmultimediacartographythathasmuchmoreusersascomparedtotraditionalGISproductionmedia.InternetGIStechnologyhasprovidedtheGISdynamicinformationacquisitionwithtechnicalsupport.Also,thevisualizationtechnologyofelectronicmaphasprovidedtoolsforGISsymbolswithdynamiccharacteristics.OnthebasisofGISdynamicinformationacquisition,thedesignideaandimplementationmethodsofdynamicsymbolsindynamicGISarepresentedinthisarticle.

简介：有在短波长区域的异常分散的Photonic水晶纤维(PCF)为一些应用是重要的，例如短波长soliton繁殖，超级连续统产生和放射激光的短脉搏纤维。在这份报纸，为与要求的异常分散区域设计PCF的一个系统的方法被使用一个有限差别解答者和PCF的波导分散的可伸缩的转变建议。设计PCF能在这个区域是反常地散的不到1.3渭m，它是很困难的在传统的标准单个模式的纤维认识到。建议方法的有效性被数字结果同意。CLC数字TN253-TQ342+.82文件代码A这个工作被中国(号码60407011和号码60277018)和浙江的国家自然科学基础支持中国的省的自然科学基础(没有。Y104073）

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简介：2010年3月12日，BlackamgicDesign公司为世界首款3Gb／sSDI和光纤示波器BlackmagicUltraScope发布新软件。安装这一最新软件后，BlackmagicUltraScope现在可以使用“双窗口并列”模式。

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简介：Natureisaninformationsourcebookofbehaviour,function,colourandshapewhichcaninspirevisualdesignandinven-tion.Studyingtheformandfunctionalcharacteristicsofanaturalobjectcanprovideinspirationforproductdesignandhelptoimprovethemarketabilityofmanufacturedproducts.Theinspirationcanbetriggeredeitherbydirectobservationorcapturedbythree-dimensional(3D)digitisingtechniquestoobtainsuperficialinformation(geometryandcolour).Anartdesigneroftencreatesaconceptintheformofatwo-dimensional(2D)sketchwhileengineeringmethodsleadtoapointcloudin3D.Eachhasitslimitationsinthattheartdesignercommonlylackstheknowledgetobuildafinalproductfroma2Dsketchandtheengi-neeringdesigner’s3Dpointcloudsmaynotbeverybeautiful.WeproposeamethodforProductDesignfromNature(PDN),couplingaestheticintentandgeometricalcharacteristics,exploringtheinteractionsbetweendesignersandnature’ssystemsinPDN.Webelievethatthisapproachwouldconsiderablyreducetheleadtimeandcostofproductdesignfromnature.

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简介：摘要：By integrating a variety of educational functions, the design of compound educational space promotes the all-round development of students, strengthens practical teaching.The design and practice value of compound educational space can be summarized into three levels: optimizing the allocation of educational resources at the macro level, improving the quality of educational space construction at the meso l evel, and promoting the individualized and all-round development of students at the micro level.

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简介：AnorthogonallymultiplexedQAM(OQAM)systemallowstransmissionspeedtobeveryclosetotheNyquistratewithlittlesensitivitytodelayandsignaldistortionsoftransmissionmediumwhenalargenumberofchannelsareused.Itscircuitcomplexitycanbelargelyovercomebyintroducingdigitalsignalprocessing(DSP)technology,Inthispaper,theimplementationofgroupbanddatamodemusingOQAMtechniqueispresented,whereOQAMsystemisrealizedbymeansofcascadingadiscretecosinetransformer(DCT)andaweightingnetwork.TheproperalgorithmofevaluatingFIRfilterandDCTprovidesfurtherreductionofthecomputationcomplexitywhichdropsto35.6%ofthatofHirosaki'sscheme[5].

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简介：On-orbitservicespacecraftorbitproblemhasbeenaddressedfordecades.Theresearchofon-orbitservicespacecraftorbitcanberoughlydividedintoorbitdesignandorbitoptimization.Thepapermainlyfocusesontheorbitdesignproblem.Wesimplysummarizeofthepreviousworks,andpointoutthemaincontentoftheon-orbitservicespacecraftorbitdesign.Weclassifycurrenton-orbitservicespacecraftorbitdesignproblemintoparking-orbitdesign,maneuvering-orbitdesignandservicing-orbitdesign.Then,wegiveadetaildescriptionofthethreespecificorbits,andputforwardourownideasontheexistedachievements.Thepaperwillprovideameaningfulreferencefortheon-orbitservicespacecraftorbitaldesignresearch.