简介:RamificationsofChina's1.2BillionPopulationOnFebruary15,1995,China'stotalpopulationreached1.2billion.Let'sexplorewhatthismeans...
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。
简介:台湾的VIATechnology公司目前公开了预计在2001年第3季度出厂的86系列互换微处理器(开发代码名:C5X)的大致规格。其工作频率为1.2GHz.与基于现行体系结构的“C5C”相比.工作频率提高了40%。该处理器的发布会是由美国Centaur技术公司(该公司由VIA于1999年8月从IDT手中收购)总裁GalenHenry主持进行的.C5X由于工作频率大幅提高.所以其流水线段数也相应地从C5C的12段增加到17段.并且在一个周期内可进行译码的指令数日增加到2个关于整数运算指令和MMX指令,在一个周期内最大可以执行2个指令。
简介:DigitalnetworkedcommunicationsarethekeytoallInternet-of-Thingsapplications,especiallytosmartmeteringsystemsandthesmartgrid.Inordertoensureasafeoperationofsystemsandtheprivacyofusers,thetransportlayersecurity(TLS)protocol,amatureandwellstandardizedsolutionforsecurecommunications,maybeused.WeimplementedtheTLSprotocolinitslatestversioninawaysuitableforembeddedandresource-constrainedsystems.ThispaperoutlinesthechallengesandopportunitiesofdeployingTLSinsmartmeteringandsmartgridapplicationsandpresentsperformanceresultsofourTLSimplementation.Ouranalysisshowsthatgivenanappropriateimplementationandconfiguration,deployingTLSinconstrainedsmartmeteringsystemsispossiblewithacceptableoverhead.
简介:LetEandFbeBanachspacesandfnon-linearC^1mapfromEintoF.ThemainresultisTheorem2.2,inwhichaconnectionbetweenlocalconjugacyproblemoffatx0∈Eandalocalfinepropertyoff'(x)atx0(seetheDefinition1.1inthispaper)areobtained.Thistheoremincludesasspecialcasesthetwoknowntheorems:thefiniteranktheoremandBerger'sTheoremfornon-linearFredholmoperators.Moreover:thetheoremgivesrisethefurtherresultsforsomenon-linearsemi-Fredholmmapsandforallnon-linearsemi-FredholmmapswhenEandFareHilbertspaces.ThusTheorem2.2notonlyjustunifiestheaboveknowntheoremsbutalsoreallygeneralizesthem.
简介:A0.18lmCMOSlownoiseamplifier(LNA)byutilizingnoise-cancelingtechniquewasdesignedandimplementedinthispaper.Current-reuseandself-biastechniqueswereusedinthefirststagetoachieveinputmatchingandreducepowerconsumption.ThecoresizeoftheproposedCMOSLNAcircuitwithoutinductorwasonly128lm9226lm.ThemeasuredpowergainandnoisefigureoftheproposedLNAwere20.6and1.9dB,respectively.The3-dBbandwidthcoversfrequencyfrom0.1to1.2GHz.Whenthechipwasoperatedatasupplyvoltageof1.8V,itconsumed25.69mW.ThehighperformanceoftheproposedLNAmakesitsuitableformultistandardlow-costreceiverfront-endswithintheabovefrequencyrange.