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31 个结果
  • 简介:China'stop3telecomoperatorsinvestRMB80blninthefirsthalfChina'stopthreetelecommunicationoperators,ChinaTelecom,ChinaMobileandChinaUnicom,investedRMB80billiontoboostthethird-generation(3G)networksofarthisyear,theMinistryofIndustryandInforma-

  • 标签: 电子 CDMA手机 中国电信 出口单位 SCDMA 电力公司
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  • 简介:Transientelectronicsareanemergingclassofelectronicswiththeuniquecharacteristictocompletelydissolvewithinaprogrammedperiodoftime.Sincenoharmfulbyproductsarereleased,theseelectronicscanbeusedinthehumanbodyasadiagnostictool,forinstance,ortheycanbeusedasenvironmentallyfriendlyalternativestoexistingelectronicswhichdisintegratewhenexposedtowater.Thus,themostcrucialaspectoftransientelectronicsistheirabilitytodisintegrateinapracticalmannerandareviewoftheliteratureonthistopicisessentialforunderstandingthecurrentcapabilitiesoftransientelectronicsandareasoffutureresearch.Inthepast,onlypartialdissolutionoftransientelectronicswaspossible,however,totaldissolutionhasbeenachievedwitharecentdiscoverythatsiliconnanomembraneundergoeshydrolysis.Theuseofsingle-andmulti-layeredstructureshasalsobeenexploredasawaytoextendthelifetimeoftheelectronics.Analyticalmodelshavebeendevelopedtostudythedissolutionofvariousfunctionalmaterialsaswellasthedevicesconstructedfromthissetoffunctionalmaterialsandthesemodelsprovetobeusefulinthedesignofthetransientelectronics.

  • 标签: 电子技术 瞬态 部分溶解 电子产品 功能材料 电子设备
  • 简介:TheBeijingFeidaElectronicsGroupCompanyisoneofBeijing'sfiveelectronicsgroups,with15jointventuresand17factories.BeijingHaishan...

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  • 简介:TheJournalofSystemsEngineeringandElectronics(EnglishEdition)isacomprehensiveacademicperiodicaljointlysponsoredbytheSecondAcademyofChinaAerospaceScienceandIndustryCorporation,theChineseSocietyofAstronautics,theSystemsEngineeringSocietyofChinaandtheChineseAssociationforSystemSimulation.Itstartedpublicationin1990,andnowappearsfourtimesayear,distributedathomeandabroad.

  • 标签: 系统工程与电子技术(英文版) 期刊介绍 研究领域 栏目设置
  • 简介:TheJournalofSystemsEngineeringandElectronicsisacomprehensiveacademicperiodicaljointlysponsoredbyDefenseTechnologyAcademyofChinaAerospaceScience&IndustryCorporation,ChineseSocietyofAstronautics,SystemEngineeringSocietyofChina,andChineseAssociationforSystemSimulation.Itstartedpublicationin1990,andnowispublishedbimonthly.Pursuingbothintensivenessandextensiveness,

  • 标签: 系统工程 电子技术 英文 学术期刊 国防科技 航天科技
  • 简介:Thisjournalisdevotedtotheadvancementofthescienceandtechnologyofsystemsengineeringandelectronicsthroughthedisseminationoforiginalarchivalresearchpapersdisclosingsignificanttechnicalknowledge,exploratorydevelopments,andapplicationsinastronautics,aeronautics,andrelatedfields.Inaddition,thejournalalsopublishessurvey,expositoryandtutorialpapers.Boththeoryandapplicationswillbeequallyemphasized.

  • 标签: DISSEMINATION AERONAUTICS ASTRONAUTICS devoted ELECTRONICS emphasized
  • 简介:Conventionalelectronicsisplanar,hard,andrigidduetotheintrinsicbrittlenatureofinorganicsemiconductormaterials(e.g.,siliconandgalliumarsenide).Themodernelectronictechnologyhastypicallybeenconcernedwithlargeorsmallbutdurableandlong-lastingelectronics.Recentlydevelopedmaterialsandmechanicsconceptsyieldunconventionalelectronicswithunique

  • 标签: 现代电子技术 半导体材料 编辑 电子产品 脆性性质 力学概念
  • 简介:Stretchableelectronics,whichofferstheperformanceofconventionalwafer-baseddevicesandmechanicalpropertiesofarubberband,enablesmanynovelapplicationsthatarenotpossiblethroughconventionalelectronicsduetoitsbrittlenature.Oneeffectivestrategytorealizestretchableelectronicsistodesigntheinorganicsemiconductormaterialinastretchableformatonacompliantelastomericsubstrate.Engineeringthermalmanagementisessentialforthedevelopmentofstretchableelectronicstoavoidadversethermaleffectsonitsperformanceaswellasinapplicationsinvolvinghumanbodyandbiologicaltissueswhereeven1–2°Ctemperatureincreaseisnotallowed.Thisarticlereviewstherecentadvancesinthermalmanagementofstretchableinorganicelectronicswithfocusesonthethermalmodelsandtheircomparisonstoexperimentsandfiniteelementsimulations.

  • 标签: 电子技术 可拉伸 热分析 机械物理性能 应用程序 半导体材料
  • 简介:TheresearchinPowerElectronicsandDivesatTheHongKongPolytechnicUniversityhasbeenundertakingformanyyears.Recently,aPowerElectronicsResearchCentre(PERC)hasbeendevelopedthatiscontributedtowardstheresearchanddevelopmentinthearea.Itencompassesthehighfrequencypowersupplies,chaosandbifurcation,soft-switchingpowerconverters,electricalmachines,highprecisionmotioncontrol,tractionandtrafficcontrol,alternativeenergyandelectricalbuildingservices.

  • 标签: DC/DC变换器 PERC EMI 电磁兼容性