学科分类
/ 8
143 个结果
  • 简介:Usingthesingleparticletheoryandthenon--flexibilitycollisionmodelofelectronandphoton,theinfluenceoftheuncapturedelectronsontheenergyconversionefficiencyofmulti--photonnonlinearComptonscatteringintheextrastationarylaser--plasmaisinvestigated.Itshowsthatinextrastationarylaser—plasma,theuncapturedelectronsmaketheAtoofthescatteringfrequencyofthemulti--photonComptonfalldownwiththeincreasesoftheincidentradiationelectronspeed,thematerialsoftheincidentcollisionofelectronandphoton,andthenumberofthephotonswhichworkwiththeelectronsatthesametime.Underthemodulationoftheuncapturedelectronstothelaserfield,theenergyconversionefficiencybetweenelectronsandphotonswillfalldownwiththeincreaseoftheelectronincidentradiationspeed,usingthelow--powerelectronsforincidentsource,thelosscanbeefficientlyreduced.

  • 标签: 光子康普顿散射 能量变换 电子捕获 激光等离子体 高功率激光器
  • 简介:用在高精力的电子和热放射光子之间散布的反的康普顿的模型,散布高精力的电子的多光子康普顿上的散发热的光子的影响被学习。精力损失,力量损失,轻抵抗和光热形成的高精力的电子迫使放射的结果表演都与电子的真空洞的温度T4成正比,Lorentz因素2个高精力的电子,电子的散布的节和与高精力的电子同时行动的光子的数字。为由使用在高精力的电子和热放射光子之间散布的一个光子康普顿减少高精力的电子的精力损失的一个好方法被建议。

  • 标签: 多光子康普顿散射 高能电子 热辐射 能量损失
  • 简介:Themediumaccesscontrol(MAC)protocolforindoorvisiblelightcommunication(VLC)withenergyharvestingisexploredinthispaper.Theunfairnessofthroughputexistsamongdevicesduetothesignificantdifferenceoftheirenergyharvestingrateswhichchangeswithdistance,acceptanceangleandtheobstructionprobability.Weproposeanenergyharvestingmodel,anewobstructionprobabilitymodelandanenergyadaptivecontentionalgorithmtoovercometheunfairnessproblem.Thisdevicecanadjustitscontentionwindowaccordingtotheenergyharvestingrate.Asaresult,thedevicewithlowerenergyharvestingratecangetshortercontentionwindowtoimproveitstransmissionopportunity.SimulationresultsshowthatourMACprotocolcanachieveahigherdegreeoffairness.

  • 标签: MAC协议 能量收集 自适应 IEEE 介质访问控制 阻塞概率
  • 简介:Sincedecades,theglobalelectricitydemandshowsonlyonedirection:aconsiderableconstantincreaseeveryyear.Buttheunlimitedgrowthinenergyconsumptionisdiscussedincreasinglycritical,notonlyprimarilyintermsoflimitationsbutalsointermsofmoreefficient,moreintelligent,andmoresustainableusageofenergy.Energy-efficienttechnologies(EET)andrenewableenergy

  • 标签:
  • 简介:AftertheFukushimadisaster,Europeanpoliticiansbegantoreassesstheenergystrategyfortheircountries.Thefocusisnowonrenewableenergysourcesandasaresultondecentralization.Thedecentralizedgeneration,storage,andofcoursetheconsumptionofenergyisthecentralpoint.Nowwiththenewdevelopmentsundertheroofofenergyturnaroundthewaybackfromthecentralizedarchitectureofourenergysystemtoamoredecentralizedoneispredetermined.Decentralizationimpliesthechangeintheroleoftoday’sconsumers.Theybecomeenergyprosumers.Thisisthebasisforthecrowdenergyconcept.Inthispositionpaperthecrowdenergyconceptisintroducedandnecessaryresearchfieldsareidentified.

  • 标签: 能源战略 人群 可再生能源 权力下放 能量消耗 能源系统
  • 简介:SmartlivinglabssuchastheonelocatedinFribourg(Switzerland)focusonimprovingwellbeingandfurtheringknowledgerelatedtobuildingthedistrictofthefutureonatechnicalandsociallevel.Therefore,smartlivinglabsrepresentanexperimentalplatform/spacewheresustainableproductionandconsumptionstrategiescanbetestedinaprotectedenvironment.Asignificantchangeinthesocioeconomicproductionandconsumptionspherecanbeexpectedbytheriseoftheso-calledenergyprosumer.Accordingly,thisarticlepresentsaninteractivemodelfortheexperimentalinvestigationofenergyprosumerbehavior.Inthiscontext,twopotentialexperimentsoninvestmentandtradedecisionsarebrieflyoutlined.Since(behavioralandeconomic)experimentsareusuallyconductedundercontrolledconditionsinexperimentallabsinvolvingmainlyundergraduatestudents,thepresentedinteractivemodelisflexibleandmobile,providingtheadvantagetoconductexperimentsnearlyeverywhereinvolvingeverydaycitizens.

  • 标签: Crowd ENERGY decentralised ENERGY SYSTEMS EXPERIMENTS
  • 简介:一条高效轨道和抓住(T/H)电路设计因为高分辨率的高速度的analog-to-digital变换器(模数转换器)被介绍,它在0.18m互补金属氧化物半导体过程被实现了。一改善自举,切换体积的技术被介绍极大地在宽带宽,和增加上最小化采样网络的非线性一修改预先控告减少全部的电源消费的电路帮助。试验性的结果证明建议T/H电路以100MHz采样率完成超过77dBSFDR(假免费的动态范围)和70dBTHD(全部的泛音失真)并且当消费47mW电源时,与输入频率维持性能直到305MHz。

  • 标签: 高速ADC 充电电路 高分辨率 性能 跟踪 CMOS工艺
  • 简介:Digitaltransformationgenerallyreferstotheprocessofchangeinbusinessandsociety,basedontheomnipresenceofsensors,networks,information,andcommunicationtechnology.Evershorterdevelopmentandinnovationcyclesareacharacteristicfeatureofthisprocess,whichiscurrentlyinfluencingallindustriesandallareasoflife,beitindustrialproduction,trade,transport,healthcare,oreducation.Theubiquityofdigitaltechnologyleadstoprofoundpolitical,economic,andsocialchanges,butalsotomultifacetedinnovations.

  • 标签: DIGITAL DIGITAL technology ECONOMIC
  • 简介:Thedisruptionofdigitaltechnologieshasbeenarealityinmanydifferentindustrialsectorsformanyyears.Thedigitaltransformationisnowhavinganincreasingimpactontheenergysectoraswellastheso-called“smartenvironments”,e.g.bottom-to-bottomenergyprovisionmodels(crowdenergy)arenolongerjusttheorybutreality.Thedigitalagendaisdrivenbythecombineduseofaffordablesensorsandinformationandcommunicationstechnology(SICT).

  • 标签: DISRUPTION of digital TECHNOLOGIES different industrial
  • 简介:GuestEditorProf.Dr.StephanieTeufelUniversityofFribourgstephanie.teufel@unifr.chFromenergygenerationtotransportation,fromenergydistributiontostorage,fromsemiconductorprocessingtocommunications,andfromportabledevicestodatacenters,energyconsumptionhasgrowntobeamajorlimitationtousability

  • 标签: 可再生能源 节能技术 电子科技 杂志 论文 征集
  • 简介:Sincedecades,theglobalelectricitydemandshowsonlyonedirection:aconsiderableconstantincreaseeveryyear.Buttheunlimitedgrowthinenergyconsumptionisdiscussedincreasinglycritical,notonlyprimarilyintermsoflimitationsbutalsointermsofmoreefficient,moreintelligent,andmoresustainableusageofenergy.Energy-efficienttechnologies(EET)andrenewableenergytechnologiesarealreadyinacompetitivepositionindifferentmarkets,andtheyarealsoactively

  • 标签: 节能技术 电子科技 期刊论文 可再生能源技术 应用 能量
  • 简介:Anovellowpowerandlowvoltagecurrentmirrorwithaverylowcurrentcopyerrorispresentedandtheprincipleofitsoperationisdiscussed.Inthiscircuit,thegainboostingregulatedcascodeschemeisusedtoimprovetheoutputresistance,whileusinginverterasanamplifier.ThesimulationresultswithHSPICEinTSMC0.18umCMOStechnologyaregiven,whichverifythehighperformanceoftheproposedstructure.Simulationresultsshowaninputresistanceof0.014Ωandanoutputresistanceof3GΩ.Thecurrentcopyerrorisfavorableaslowas0.002%togetherwithaninput(theminimuminputvoltageofvin,min~0.24V)andanoutput(theminimumoutputvoltageofvout,min~0.16V)complianceswhileworkingwiththe1Vpowersupplyandthe50uAinputcurrent.Thecurrentcopyerrorisnearzeroattheinputcurrentof27uA.Itconsumesonly76uWandintroducesaverylowoutputoffsetcurrentof50pA.

  • 标签: 电流镜 低功耗 低电压 性能 高精度 输出电阻
  • 简介:对数的反应互补金属氧化物半导体(互补金属氧化物半导体)图象传感器提供一个宽动态范围,但是它的缺点是简单固定模式噪音(FPN)的缺乏取消计划。设计与高有活力的范围和高输出秋千是一个新奇对数的活跃象素传感器(APS)。第一,混合模型APS的操作原则被介绍。象素能由选择合适的控制信号在三个操作模式工作。然后,对数的APS的FPN来源被分析,并且双sampled技术被实现减少FPN。根据模拟结果,最后,布局被设计并且过去了设计统治支票(DRC),电子规则检查(ERC)和布局对图解(LVS)确认,和模拟以后的结果是基本上与模拟结果一致。新对数的APS的动态范围能到达大约140dB;并且产量秋千是大约750mV。结果证明由使用两倍取样的技术,大多数FPN被消除,动态范围被提高。

  • 标签: 场效应型 半导体 干扰模型 技术性能
  • 简介:Changingbehavioursandattitudestowardsmoresustainableindividualenergyconsumptionisadifficulttopictoaddress.Afteridentifyingthemostrecurrentfactorsinfluencingthebadenergyconsumption,society’senvironmentalshort-sightedness,alackofindividualresponsibilityandatendencytoputresponsibilityuponfirms,institutions,andgovernments,theauthorsevaluatedtheeffectthatbusinesspracticescanhaveonindividualbehaviour.Byqualifyingashighlycrediblesourcesofinformation,positioningthemselvesasexamplestofollow,andprovidingitsemployeeswiththenecessarysmartandinnovativetechnology,businesscommunitiescanhaveamajorimpactonchangingindividualbehaviourstowardsmoresustainableenergyconsumption.

  • 标签: 能源消费量 商业行为 社会环境 个体行为 信息来源 个人行为
  • 简介:Inthepastfewyears,energy-efficienttechnologiesgetmoreandmorescientificandtechnologicalinterestastheenergybottleneckstopsthe'Moore’slaw'accordingtothereportsofInternationalRoadmapforSemiconductors(ITRS).Moreover,peoplestarttotakecareseriouslyofthe

  • 标签: 节能技术 摩尔定律 环境影响 半导体 能源
  • 简介:Thetwo-dimensionalnumericalsimulationofenergytransportforMOSFETsispresented,inwhichtheeffectofgeneration,recombinationandtemperaturegradientofcarriersonthecharacteristicsofdevicesareconsidered.Animprovedmobilitymodelisalsoproposed.ThenumericalresultsofmicronandsubmicronMOSFETsshowthatthepresentmodelfitsexperimentverywell.

  • 标签: MOSFET ENERGY Transport MOBILITY NUMERICAL Simulation
  • 简介:Thispaperreportsawind-poweredwaterpumpingsystemimplementedinruralsideofPakistan.ThedesignmethodologypresentedinthispapershallenhancetheefficiencyoftheexistingSavoniusturbine’sperformancebymodifyingitaerodynamically.BladeswithdifferenttwistanglesaredesignedinSolidEdgeandanalyzedusingcomputationalfluiddynamics(CFD)withANSYSFLUENTsoftware.Staticandrotationalanalysesareperformedtogetoptimizedtwistangleandresultsarehighlighted.Theperformancesoftheturbineinbothstaticandrotationalanalysesarecompared.

  • 标签: 能量优化 风力机 垂直轴 FLUENT软件 计算流体动力学 设计方法
  • 简介:Thispaperpresentsthedesign,implementationandtestingofanembeddedsystemthatintegratessolarandstorageenergyresourcestosmarthomeswithinthesmartmicrogrid.Theproposedsystemprovidestherequiredhomeenergybyinstallingrenewableenergyandstoragedevices.Italsomanagesandschedulesthepowerflowduringpeakandoff-peakperiods.Inaddition,atwo-waycommunicationprotocolisdevelopedtoenablethehomeownersandtheutilityserviceprovidertoimprovetheenergyflowandtheconsumptionefficiency.Thesystemcanbeanintegralpartforhomesinasmartgridorsmartmicrogridpowernetworks.Aprototypefortheproposedsystemwasdesigned,implementedandtestedbyusingacontrolledloadbanktosimulateascaledrandomrealhouseconsumptionbehavior.Threedifferentscenariosweretestedandtheresultsandfindingsarereported.Moreover,dataflowsecurityamongthehome,homeownersandutilityserverisdevelopedtominimizecyber-attacks.

  • 标签: 可再生能源 储存能量 智能 电网 一体化 嵌入式系统
  • 简介:AnanalyticalmodelhasbeendevelopedtostudyinversionlayerquantizationintheultrathinoxideMOS(metaloxidesemiconductor)structuresusingvariationandtriangularwellapproaches.Accuratemodelingoftheinversionchargedensityusingthecontinuoussurfacepotentialequationshasbeendone.Noapproximationhasbeentakentomodeltheinversionlayerquantizationprocess.TheresultsshowthatthevariationapproachdescribesinversionlayerquantizationprocessaccuratelyasitmatcheswellwiththeBSIM5(Berkeleyshortchannelinsulatedgatefieldeffecttransistormodel5)resultsmorecloselycomparedwithtriangularwellapproach.

  • 标签: MOSFET 能量量子化 金属氧化物半导体 纳米级 三角结构 密度模型