俄战略火箭军导弹武器现代化率超过66%

逍遥坊招聘

2018-07-11

俄战略火箭军导弹武器现代化率超过66%

KwabenaBoahen,aprofessorofbioengineeringandofelectricalengineeringatStanfordUniversity,hasenvisionedanewgenerationofcomputerstobebrainlike,orneuromorphic,machinesthatarevastlymoreefficientthantheconventionaldigitalcomputers.Asconventionalcomputerchipsarenotuptothechallengesposedbynext-generationautonomousdronesandmedicalimplants,"wehavereachedthepointwhereweneedtodosomethingdifferent",saysBoahen,alsoamemberofStanfordBio-XandtheStanfordNeurosciencesInstitute."Ourlab"sthreedecadesofexperiencehasputusinapositionwherewecandosomethingdifferent,somethingcompetitive."Moore"slaw,anobservationmadebyIntelCorpco-founderGordonMoorein1965,hasheldupprettywellforfivedecades:Roughlyeverytwoyears,thenumberoftransistorsonecouldfitonachipdoubled,allwhilecostssteadilydeclined.However,transistorsandotherelectroniccomponentsaresosmalltheyarebeginningtobumpupagainstfundamentalphysicallimitsontheirsize.Andthereareneedsforcomputingtobeeverfaster,cheaperandmoreefficient.InthelatestissueofComputinginScienceandEngineering,Boahensaysthatthefutureisnow.Hesaysthatwhileothershavebuiltbrain-inspiredcomputers,hewasquotedinanewsreleasesayingthatheandhiscollaboratorshavedevelopedafive-pointprospectusforhowtobuildneuromorphiccomputersthatdirectlymimicinsiliconwhatthebraindoesinfleshandblood.Thefirsttwopointsoftheprospectusconcernneuronsthemselves,whichunlikecomputersoperateinamixofdigitalandanalogmodes.Intheirdigitalmode,neuronssenddiscrete,all-or-nothingsignalsintheformofelectricalspikes,akintotheonesandzeroesofdigitalcomputers.Buttheyprocessincomingsignalsbyaddingthemallupandfiringonlyonceathresholdisreached-moreakintoadialthanaswitch.ThatobservationledBoahentotryusingtransistorsinamixeddigital-analogmode.Doingso,itturnsout,makeschipsbothmoreenergyefficientandmorerobustwhenthecomponentsdofail,asabout4percentofthesmallesttransistorsareexpectedtodo.Fromthere,Boahenbuildsonneurons"hierarchicalorganization,distributedcomputationandfeedbackloopstocreateavisionofanevenmoreenergyefficient,powerfulandrobustneuromorphiccomputer.Overthelast30years,Boahen"slabhasimplementedmostofitsideasinphysicaldevices,includingNeurogrid,oneofthefirsttrulyneuromorphiccomputers.But,inanothertwoorthreeyears,Boahensays,heexpectshisteamwillhavedesignedandbuiltcomputersimplementingalloftheprospectus"fivepoints."It"scomplementary,"Boahensays,addingthat"it"snotgoingtoreplacecurrentcomputers".Butasmostpersonalcomputersoperatenowherenearthelimitsofconventionalchips,neuromorphiccomputerswouldbemostusefulinembeddedsystemsthathaveextremelytightenergyrequirements,suchasverylow-powerneuralimplantsoron-boardcomputersinautonomousdrones.

俄战略火箭军导弹武器现代化率超过66%

  新华社符拉迪沃斯托克5月28日电(记者吴刚)俄罗斯战略火箭军司令卡拉卡耶夫28日说,俄战略火箭军装备的导弹武器的现代化率已超过66%,核遏制能力已大幅提高。

  俄国防部新闻局当天援引卡拉卡耶夫的话说,2017年俄战略火箭军各导弹兵团的现代化武器换装任务已按计划完成,俄战略火箭军能够更好地执行核遏制任务。“亚尔斯”洲际弹道导弹系统的换装任务正在按计划进行。这一系统既能够机动发射,又能够固定发射,是俄战略火箭军执行核遏制任务的有力武器。  卡拉卡耶夫指出,在进行武器现代化换装任务的同时,俄战略火箭军各导弹兵团所属弹药库拥有的导弹数量也在不断增加,以保证日常演习和作战的需要。  “亚尔斯”导弹是莫斯科热力工程研究所最新研制的陆基洲际弹道导弹,最远射程可达万公里。