简介：Oneday,astudenttoldherteacherthatabirdhadbuiltitsnestinthetreeoutsidetheclassroom.Theteacherasked,"Whatkindofbird?"Thechildreplied

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简介：世界闻名的Poirot侦探来到了JohnHarrison家，阴谋是将继续还是停止呢？

简介：谷歌的新装置跨出探索智能装置领域的第一步每当寒流来袭，安迪·劳乌喜欢让他位于加州的家保持温暖，这点在过去是个问题。他有时候出差时会忘记凋低恒温器的温度，以致暖气费用大增。不过，自从他买了谷歌的Nest恒温器之后，就再没有担心过这个问题了。

简介：Inthispaper,wediscusstherank-l-preservinglinearmapsonnestalgebrasofHilbertspaceoperators.WeobtainseveralcharacterizationsofsuchlinearmapsandapplythemtoshowthataweaklycontinuouslinearhijectiononanatomicnestalgebraisidempotentpreservingifandonlyifitisaJordanhomomorphism,andinturn,ifandonlyifitisanautomorphismorananti-automorphism.

简介：硬件产品：具备学习能力的智能恒温控制器、烟雾报警器,智慧家居生态的先锋。趋势：恒温控制器、烟雾报警器本是静态的产品,但一旦跟别的设备或人产生互动,就会演变成全新的东西。我们还将看到更多新的联网的家居设备,它们将打开充满想象的未来。一家只有两款产品的创业公司竟价值32亿美元!2014年1月14日,谷歌宣布以32亿美元收购美国智能家居公司NestLabs,这是谷歌历史上的第二大收购,仅次于125亿美元收购摩托罗拉的大手笔。与摩托罗拉的江湖地位相比,Nest不过是一家成立仅4年的创业公司,迄今为止也只有智能恒温器Nest,以及烟雾报警器Protect两款产品。在2013年最新一轮融资中,NestLabs估值为8亿美元,相比之下,谷歌给出的价码溢价近300%。Nest究竟有怎样的魔力,让谷歌也为之疯狂？

简介：LetNbeanestofprojectionsonaHilbertspaceHandF(N)bethecorrespondingnestalgebra.LetAbealargesubalgebraofF(N).Itisprovedthatanymaximaln-nilpotentidealofAisintheformofA∩AF,whereFisafinitesubnestofNandRFistheJacobsonradicalofF（F).Usingthisresultcanprovethattwolargesubalgebrasareisomorphicifandonlyifthecorrespondingnestsaresimilar.

简介：Thispaperdiscussestheproblemconcerningthecontinuityandlinearityofadditivederivationofnestalgebrasonnormedspaces.ItisprovedthaterevylinearderivationofanestalgebraalgNiscontinuousprovidedthatoneofthefollowingconditionsissatisfied:(1)0+（包含）0.(2)X-（包含于）X.(3)thereexistsanon-trivialidempotnetpinalgNsuchthattherangeofpbelongstoN,Itisalsoprovedthateveryadditivederivationofanestalgebraisautomaticallylineariftheunderlyingnormedspaceisinfinitedimemnsional.

简介：基于欧空局开发的跨平台SAR处理系统NEST，阐述了二轨法差分干涉的基本原理，介绍了Nest软件的特点和处理方法，并对Barn地震区域的形变量进行提取。

简介：Anovelbirdnest-likenanostructuredMnO2(BNNS-MnO2)waspreparedbyafacileandcost-effectivestrategy.Theirstructuresandmorphologieswerecharacterizedbyfieldemissionscanningelectronmicroscopy,transmissionelectronmicroscopyandpowderX-raydiffraction.Capacitivebehaviorswereinvestigatedbycyclicvoltammetryandgalvanostaticcharge-discharge.Theobtainednano-MnO2possessesawelldesignedloose-assembledhierarchicalnanoarchitecturewithanappropriatecrystallinitywhichgivesrisetoexcellentperformancesasanelectrodematerialforsupercapacitors.Amaximumspecificcapacitanceof917F/ghasbeenobtainedatacurrentdensityof5mA/cm2in6mol/LKOHaqueoussolution,andaspecificcapacitanceof210F/ghasbeenmaintainedfor500cycles.AsthelowcostofMnSO4andKCr2O7andthelowreactiontemperature,thepresentmethodavoidstherequirementsforcomplicatedoperations,time/energy-consumingandexpensivereagents,andperhapsisreadyfortheindustrializationofnano-MnO2production.