tag 标签: communications

相关博文
  • 热度 2
    2011-5-3 18:08
    1171 次阅读|
    0 个评论
    Actress Jennifer Connelly wrote in The Atlantic: "I do like to read a book while having sex. And talk on the phone. You can get so much done."   Though some people are ardent multitaskers, surely there are some things worth your entire attention.   Are you a multitasker? Do you shave, text and drive at the same time?   Quite a few readers have written about boss demands that they work on two or more projects simultaneously. But evidence continues to emerge that we humans just do not do well when devoting our attention to more than one activity at a time.   I've had the pleasure to work with a really smart individual who can listen to a pair of converzations and "get" every nuance of each, but this is a rare quality indeed. Most of us struggle with one, resulting in the all-too-common communications breakdowns between spouses.   My wife and I share an office. When I'm not traveling we spend each day working companionably together in that room. But she knows that when I'm writing or working on a complex problem interruptions are not welcome.   During those times my email client is off, and my attention is laser-focused on the task at hand. Hours go by until I'll suddenly realize the day is over. For me, this is an extremely productive way to work... but I wonder that is an artifact of being old. Are twenty-somethings better at multitasking? Does growing up amid the cacophony of Twitter and texting train one to effectively divide one's attention between multiple activities?   In their seminar Peopleware DeMarco and Lister demonstrated that interruptions cripple productivity. Developers need a full fifteen minutes to reestablish their focus after an interruption—and the average engineer is bothered every eleven minutes.   Their work, though, is a couple of decades old, predating Hulu, Facebook, YouTube and even the web. My college-age daughter watches TV while studying. I can't even listen to a rock station on the radio when trying to concentrate as the DJ jabber distracts me no matter how far to the left the volume button is cranked.   But having grown up in a household of seven I need some background noise, so chose classical stations. If the phone rings while driving I'll generally pull over for safety, and to give the caller my full attention.   But I'm an old guy. What about you? Do you multitask? If so, do you feel productive do so?
相关资源
  • 所需E币: 0
    时间: 2020-9-6 22:37
    大小: 3.4MB
    上传者: czdian2005
    WirelessCommunications(AndreaGoldsmithStanfordUniversity)
  • 所需E币: 0
    时间: 2020-5-30 19:33
    大小: 4.68MB
    上传者: Goodluck2020
    SpirentCommunications-SimonWang.pdf
  • 所需E币: 5
    时间: 2020-4-7 13:59
    大小: 948.18KB
    上传者: 238112554_qq
    数字通信,DigitalCommunications……
  • 所需E币: 4
    时间: 2019-12-28 23:52
    大小: 49KB
    上传者: 2iot
    Manchesterencodinghasgainedwideacceptanceasthemodulationschemeforlow-costradio-frequencytransmissionofdigitaldata.Thisformofbinaryphase-shiftkeyingisasimplemethodforencodingdigitalserialdataofarbitrarybitpatternswithoutanylongstringsofcontinuouszerosorones,andhavingtheencodingclockrateembeddedwithinthetransmitteddata……
  • 所需E币: 3
    时间: 2019-12-24 19:17
    大小: 392.08KB
    上传者: 二不过三
    摘要:本文探讨了必要的标准,为电动车(电动车)和电动汽车服务设备(EVSE)之间的可靠通信。数据表明了G3-PLC系统已经达到了汽车行业和公用事业建立了标准。多个国际测试证明了G3-PLC的实现是低频的最佳解决方案。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>Automotive>APP5348Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>BatteryManagement>APP5348Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>PowerlineCommunications>APP5348Keywords:powerline,powerline,g3-plc,g3,ev,evse,electricvehiclecharging,powerlinecommunications,powerlinecommunications,plug-inhybrid,pluginhybrid,SAEJ1772,SAEJ177,SAEJ2931,SAEJ2932,SAEJ2931,SAEJ2932,IPV6,IEEE1901.2Apr03,2012APPLICATIONNOTE5348G3-PLCTechnologyFinallyMakesCharginganElectricVehicleSmartBy:ScotRobertson,ExecutiveBusiness……
  • 所需E币: 5
    时间: 2019-12-24 17:59
    大小: 101.22KB
    上传者: 2iot
    摘要:本文讨论了一种基于G3-PLC自动化系统的好处,并提出了减少能源消耗和降低维护成本,在隧道内的系统真实世界的例子。基本制度的设计进行了解释和讨论的关键性能参数。优化PLC自动化收发器。Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>EnergyMeasurement&Metering>APP5347Maxim>DesignSupport>TechnicalDocuments>ApplicationNotes>PowerlineCommunications>APP5347Keywords:powerline,powerline,plc,powerlinecommunications,powerlinecommunications,g3-plc,g3,ieee1901.2,DBPSK,DQPSK,D8PSK,OFDM,tunnellighting,TLACSMar27,2012APPLICATIONNOTE5347PowerlineCommunicationsforStreetLightingAutomationBy:ScotRobertson,ExecutiveBusinessManagerforPowerlineProductsMar27,2012Abstract:ThisarticlediscussesthebenefitsofaG3-PLC-basedautomationsystemandpresentsareal-worldexampleof……
  • 所需E币: 3
    时间: 2020-1-9 15:46
    大小: 1.16MB
    上传者: 微风DS
    OFDM無線通信4G基礎BroadbandMIMO-OFDMWirelessCommunicationsBroadbandMIMO-OFDMWirelessCommunicationsGORDONL.STBER,FELLOW,IEEE,JOHNR.BARRY,MEMBER,IEEE,STEVEW.MCLAUGHLIN,SENIORMEMBER,IEEE,YE(GEOFFREY)LI,SENIORMEMBER,IEEE,MARYANNINGRAM,SENIORMEMBER,IEEE,ANDTHOMASG.PRATT,MEMBER,IEEEInvitedPaperOrthogonalfrequencydivisionmultiplexing(OFDM)isapopularmethodforhighdataratewirelesstransmission.OFDMmaybecombinedwithantennaarraysatthetransmitterandreceivertoincreasethediversitygainand/ortoenhancethesystemcapacityontime-variantandfrequency-selectivechannels,resultinginamultiple-inputmultiple-output(MIMO)configuration.ThispaperexploresvariousphysicallayerresearchchallengesinMIMO-OFDMsystemdesign,includingphysicalchannelmeasurementsandmodeling,analogbeam……
  • 所需E币: 5
    时间: 2020-1-13 18:29
    大小: 1.81MB
    上传者: 238112554_qq
    [免费]美国海军电子培训系列之《无线通信原理》,radio-frequencycommunicationsprinciples(navyelectronicstechniciancoursevol171998)……
  • 所需E币: 3
    时间: 2020-1-13 19:27
    大小: 2.79MB
    上传者: 二不过三
    RFTechnologiesforLowPower...,RFTechnologiesforLowPowerWirelessCommunications……
  • 所需E币: 3
    时间: 2020-1-14 09:29
    大小: 1.79MB
    上传者: rdg1993
    CMOSPowerAmplifiersforWirelessCommunicationsCMOSPowerAmplifiersforWirelessCommunicationsKing-ChunTsaiandPaulR.GrayBerkeleyWirelessResearchCenterDepartmentofElectricalEngineeringandComputerSciencesUniversityofCalifornia,Berkeley,CA94720IntegrationinWirelessIndustryCost,Size,PowerReductionMulti-modalOperation,UbiquitousConnectionsServiceIntegrationHardwareIntegrationLCfilterDiscreteCapsResonatorsFrequencySynthesizerPowerAmplifierDiscreteInductorsMixerDSPMemoryFor“system-on-a-chip”scaleintegration,SitechnologypossiblytheonlyviablechoiceSiTechnologyRoadmap*YearofproductshipmentFeatureSizeTX/RXFrequency(GHz)Fmax/Ft(GHz)NoiseFigure(dB)1/fNoise(V2/HZ-um2)1997250nm1.8-2.525/2021999180nm2.5-3.535/301.52002130nm5.0-7.050……
  • 所需E币: 5
    时间: 2020-1-14 09:30
    大小: 1.73MB
    上传者: quw431979_163.com
    TheProspectsofMultimediaApplicationProcessorsandWirelessCommunicationsTheProspectsofMultimediaApplicationProcessorsandWirelessCommunicationsDavidChih-WeiChang,Ph.D.DeputyGeneralDirectorSoCTechnologyCenter/ITRIE-mail:cwchang@itri.org.tw2005.11.11.1OutlineMarketTrendofGlobalSemiconductorIndustryCurrentStatusandProspectsofTaiwanSemiconductorIndustryIndustryTrendandMarketOpportunities:WirelessandMultimediaDSPCoreandMultimediaApplicationProcessorsWirelessCommunicationsConclusions2MarketTrendofGlobalSemiconductorIndustry3WorldwideSemiconductorMarketGraduallyShiftstoAsia55%50%45%40%35%30%25%20%15%10%199119921993199419951996199719981999200020012002200320042005(e)AmericaEurpoeJapanAsia-PacificForecastTheAsia-Pacificsemiconductormarketsharekeepsi……
  • 所需E币: 5
    时间: 2020-1-14 09:33
    大小: 1.38MB
    上传者: quw431979_163.com
    Phase-LockedLoopsforWireles...,Phase-LockedLoopsforWirelessCommunications2nd……
  • 所需E币: 4
    时间: 2020-1-14 09:50
    大小: 1.33MB
    上传者: 2iot
    射频通信原理(米国海军资料),Radio-frequencycommunicationsprinciples[Navy]……
  • 所需E币: 3
    时间: 2020-1-14 10:39
    大小: 1.37MB
    上传者: 238112554_qq
    DigitalCommunications_FundamentalsAndApplicationsSSEECCOONNDDEEDDIITTIIOONNFundamentalsandApplicationstherFromoesrcuoselChannlssymboationInformsourcegeMessalssymboelChannencodeMultiplexassBandptemodulancyFrequespreadleMultipaccessXMTPulsetemodulaFormatSourceencodeEncryptgi(t)uiDigitalndbasebarmfoevwasi(t)DigitalassbandprmfoevawelChanneimpulsseresponhc(t)DigitalinputChannelmiDigitaloutputBitstreamSynchtionronizaz(T)ir(t)ncyFrequeaddespreleMultipaccessRCVimelChanndecodeiplexDemultDetectulateDemodlep&SamFormatSourcedecodeDecryptelChannlssymboatioInformsinkngeMessalsobmysrToothesationdestinBERNARDSKLARtheCompanionCDConciseDSPTutorialROBE……
  • 所需E币: 5
    时间: 2020-1-14 11:24
    大小: 3.36MB
    上传者: wsu_w_hotmail.com
    RFPowerAmplifiersforWirelessCommunications_2RFPowerAmplifiersforWirelessCommunicationsSecondEditionDISCLAIMEROFWARRANTYThetechnicaldescriptions,procedures,andcomputerprogramsinthisbookhavebeendevelopedwiththegreatestofcareandtheyhavebeenusefultotheauthorinabroadrangeofapplications;however,theyareprovidedasis,withoutwarrantyofanykind.ArtechHouse,Inc.,andtheauthorandeditorsofthebooktitledRFPowerAmplifiersforWirelessCommunications,SecondEdition,makenowarranties,expressedorimplied,thattheequations,programs,andproceduresinthisbookoritsassociatedsoftwarearefreeoferror,orareconsistentwithanyparticularstandardofmerchantability,orwillmeetyourrequirementsforanyparticularapplication.Theyshouldnotberelieduponforsolvinga……
  • 所需E币: 4
    时间: 2020-1-14 13:21
    大小: 3.29MB
    上传者: 16245458_qq.com
    RFpoweramplifiersforwirele...,RFpoweramplifiersforwirelesscommunications……
  • 所需E币: 5
    时间: 2020-1-14 13:40
    大小: 2.67MB
    上传者: quw431979_163.com
    功放的2本英文书/TwobooksaboutPA...,Springer-RFPowerAmplifiersforMobileCommunications……
  • 所需E币: 3
    时间: 2020-1-14 13:57
    大小: 259.98KB
    上传者: 2iot
    designandimplementationofcascadedecimationfilterforradiocommunications……
  • 所需E币: 4
    时间: 2020-1-14 14:11
    大小: 1.66MB
    上传者: 二不过三
    RFMEMSCircuitDesignforWirelessCommunications(ArtechHouse-2002)RFMEMSCircuitDesignforWirelessCommunicationsForalistingofrecenttitlesintheArtechHouseMicroelectromechanicalSystems(MEMS)Series,turntothebackofthisbook.RFMEMSCircuitDesignforWirelessCommunicationsHéctorJ.DeLosSantosArtechHouseBostonLondonwww.artechhouse.comLibraryofCongressCataloging-in-PublicationDataDeLosSantos,HéctorJ.RFMEMScircuitdesignforwirelesscommunications/HéctorJ.DeLosSantos.p.cm.(ArtechHousemicroelectromechanicalsystemslibrary)Includesbibliographicalreferencesandindex.ISBN1-58053-329-9(alk.paper)1.WirelesscommunicationsystemsEquipmentandsupplies.2.Radiocircuits.3.Microelectromechanicalsystems.I.Title.II.Series.TK5103.2.S262002621.382dc212002016428BritishLibraryCatalogu……
  • 所需E币: 3
    时间: 2020-1-14 18:50
    大小: 2.27MB
    上传者: 二不过三
    Digital_Clocks_for_Synchronization_and_CommunicationsDigitalClocksforSynchronizationandCommunicationsForalistingofrecenttitlesintheArtechHouseTelecommunicationsLibrary,turntothebackofthisbook.DigitalClocksforSynchronizationandCommunicationsMasamiKiharaSadayasuOnoPekkaEskelinenArtechHouseBostonLondonwww.artechhouse.comLibraryofCongressCataloging-in-PublicationDataKihara,Masami.Digitalclocksforsynchronizationandcommunications/MasamiKihara,SadayasuOno,PekkaEskelinen.p.cm.―(ArtechHousetelecommunicationslibrary)Includesbibliographicalreferencesandindex.ISBN1-58053-506-2(alk.paper)1.Timingcircuits.2.Synchronization.3.Telecommunicationsystems……
广告