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简介：ＮｅｗＣｏｌｏｒｉｍｅｔｒｉｃＰｙｒｏｍｅｔｅｒｗｉｔｈＯｐｔｉｃａｌＦｉｂｅｒＬｉｎｋ①ＺＨＵＧｕａｎｇｒｏｎｇ，ＬＩＵＬｉｗｅｉ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）Ａｂｓｔｒａｃｔ：Ｂａｓｅｄｏｎｔｈ...

简介：Basedontheconceptofthermo-radiationtheory,theprincipleofnon-contacttemperaturemeasurementwithopticalfiberisintroduced.Thenewpyrometeroperatesonthebasisoftwo-waytemperaturesignaldivisioncalculationviamrcrocom-putersignalprocessingsystem.Itsdesignmethodandsmartconstructionoftheelectro-opticalsystempossesssuchadvantagesashighmeasurementaccuracy,freedomfromelectricinterferenceandotherperturbationsaswellasflexibleapplications.Theindica-tionscaleofthemeasuredtemperatureandexperimentresultsaregiveninthispaper.

简介：新型10至60kVA三相输出UPS系列。70-NET系列UPS的推出代表了Chloride产品家族新时代的到来，外观和技术设计更为优化。70-NET系列UPS性能可靠，用户界面友好，安装、控制、使用方便。本系列产品是众多关键领域的理想电源保护系统，包括网络、工业应用和管理系统等领域。本系列产品由于其低运行噪音及与多种通信接口的兼容性，可完美地集成到计算处理环境内。

简介：Theprincipleofnewopticalfibrepressuretransducerisanalysed,andinge-niousdesignschemeofthistransducerisvigen.Thisnewtransducerspecimenisprovidedwithfollowingcharacteristics;experimentaltransmittingdistanceis20m(actuallyupto1000m);systemsensitivityis0.1mV/Pa;powerconsumptionoftheprobeislessthan125μW.Finally,somepointsoftheappraisementaregiveninthispaper.

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简介：Anopticalfibertransmittingphotoelectriccouplingcurrenttransformerhasbeendeveloped.Intheenvironmentofhighvoltageandelectromagneticfields,thisdeviceischaracterizedbyhighinsulation,highreliability,smallmassandhighanti-interference.Thestructuredesignandopertingprincipleofthesystemareintroduced,measurementerrorsareanalyzedandexperimentalresultsaregiven.

简介：Theoperationprincipleofanovelportableoilingredientinstrumentisintroduced.Usingthetheoryoffluorescencemeasurement,thisinstrumentcancarryoutfastandconsecutivein-situdetectionofoilingredientinseawater,confirmingfastandcorrectlythesituationofoilcontaminationsuchastheconcentrationandthearea,etc.Thelowestdetectableconcentrationfortheinstrumentis1×10-8g/mlwiththeprecisionoflessthan3%.Theresultsofexperimentandpracticeshowthatthissystemhaswellwater-sealedcharacteristicandrepeatability.

简介：在站点密集地区，点对多点传输比点对点传输有着明显的优势。作为一条简单的经验法则，当可从一个位点控制4-5个RBS时，点对多点微波传输即是理想的网络传输之选。然而，这两项技术还可(并将)结合使用。点对点微波通常部署在RBS较少的地区，可与点对多点技术相结合，克服传输中的距离与干扰问题。爱立信点对点与点对多点产品系列的强大组合，可为2G与3G网络提供具有最低成本及最高频率利用率的解决方案。

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简介：Apiezoelectricaccelerometerwithopticalfibertomeasurethedynamicparameterof3dimensionsispresented.TheoperationequationsonX,YandZaxesaredivided,andthetestresultsof3dimensionalsensitivitiesandfrequencyresponse,aregivenaswellasexperimentresultsofvibrationtestwiththissetup.

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简介：Inthispaper,weproposeatheoreticalmethodinordertoestimatetheforwardlinkoutageprobabilityandusercapacityofacellularsystemwhicharebasedonIS-95CDMAstandard,especialyimpactofpowercontrolstrategyandwiceactivitymonitoringinthesystemunderlong-termfadingeffects,inwhichthelightandheavyfadingsareconsidered.Accordingtothenumericalresultsobtainedinthispaper,thepowercontrolstrategyleadstoapproximatelythethreefoldusercapacityincontrasttothesituationwithoutpowercontrolstrategy,ThereultsarecomparedwithInterference-to-SignalRatio(ISR)drivenpowercontrolscheme^[6][9]whichcanbeusedonlyforsimulationofthesystem.Thepowercontrolstrategynotonlyimprovesthedesiredsignaltotheinterferencerationinthereferenceuser'sreceiver,butalsooffersuniformservicetotheuserwhereveritislocatedinthecell.

简介：1供应链管理当今全球已步人经济一体化和因特网新经济时代,市场的变化正在不断加快,需求的不确定性正在不断加大,势必要求信息交换快捷与准确,产品上市快速与及时.原来传统的企业管理模式--"纵向一体化"管理已不适应新时代的要求.

简介：AnovellinkadaptationschemeusinglinearAutoRegressive(AR)modelchannelestimationalgorithmtoenhancetheperformanceofautorateselectionmechanisminIEEE802.11gisproposed.ThisschemecanovercomethelowefficiencycausedbytimeintervalbetweenthetimewhenReceivedSignalStrength(RSS)ismeasuredandthetimewhenrateisselected.Thebestrateisselectedbasedondatapayloadlength,frameretrycountandtheestimatedRSS,whichisestimatedfromrecordedRSSs.Simulationresultsshowthattheproposedschemeenhancesmeanthroughputperformanceupto7%,insaturationstate,andupto24%infiniteloadstatecomparedwiththosenon-estimationschemes,performanceenhancementsinaveragedroprateandaveragenumberoftransmissionattemptsperdataframedeliveryalsovalidatetheeffectivenessoftheproposedscheme.

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简介：Withthedevelopmentofwirelesscommunicationsandpositioningtechnologies,trackingthepositionsofmovingobjectshasincreasednecessary.ThispaperproposesaCache-ConsciousTPR*-LinktreecalledCTPR*-Linktreewhichstoreinmainmemory.Tosatisfycontinuousmovement,theQRMBRdefinitionismodified.Thecompressionleadstothereductionofthetreeheight,whichimprovesthecachebehavioroftheindexandreducesthememoryaccesstime.Inordertoachievehighconcurrencycontrol,optimisticdynamicversioningandsibling-linkschemeispresented,whichnotonlyenableread-onlytransactionsnottofailwithlatch-freebutalsoreducecachemissesduringindexupdates.