简介:台湾积体电路制造股份有限公司于12月10日公布2008年11月营收报告,就非合并财务报表方面,营收约为新台币192亿9500万元,较2008年10月份减少了32.0%,较去年同期减少了36.0%;累计今年一至十一月的营收约为新台币3086亿600万元,较去年同期增加了8.5%。
简介:Becauseofrapiddevelopmentinnetworktechnology,Internetusagehasbecomewidespread.Itallowsuserswithsensingdevicestoobtainmedicaldataforhealthcare,suchasphysiologicalsignals,voice,andvideostreamsfromtelemedicinesystems,andtosendthehealthcaredatatoback-enddatabasesystems,creatingaubiquitoushealthcareenvironment.However,thisenvironmentrequiresawidespreadandsuitablenetwork.IPv6(Internetprotocolversion6)isthenext-generationInternetprotocolthatwillbetheprotocoloffuturenetworks;itimprovesmanyshortcomingsofIPv4.Inthispaper,weproposeanIPv6/IPv4U-home-caretestsystemandanalyzethenetwork’sparametersthoughaseriesoftestsbyadjustingnetworkparameterstofindtheoptimaldesignforapplicationsintheIPv6/IPv4U-home-careservicesoastoassuregoodperformanceandhighquality.
简介:Electricallypumpedhighpowerterahertz(THz)emittersthatoperatedaboveroomtemperatureinapulsemodewerefabricatedfromnitrogen-dopedn-type6H-SiC.Theemissionspectrahadpeakscenteredon5THzand12THz(20meVand50meV)thatwereattributedtoradiativetransitionsofexcitonsboundtonitrogendonorimpurities.Duetotherelativelydeepbindingenergiesofthenitrogendonors,above100meV,andthehighthermalconductivityoftheSiCsubstrates,theTHzoutputpowerandoperatingtemperatureweresignificantlyhigherthanpreviousdopantbasedemitters.Withpeakappliedcurrentsofafewamperes,andatopsurfaceareaof1mm2,thedeviceemittedupto0.5mWatliquidnitrogentemperature(77K),andtensofmicrowattsupto333K.ThisresultisthehighesttemperatureofTHzemissionreportedfromimpuritybasedemitters.