简介：Theprincipleofstripwidthmeasuringsystemwithopticalfiberlinkisdescribed,andapracticalmethodisintroduced.

简介：Thereexistmanymethodstomeasurebloodspeed,allofwhichhavesomeseriousshortcomings.Asfiberischaracterisedbytinydiameter,andlowlostratioofpowerandflexibility,itissuitableformeasuringbloodspeed.Itisprovedthatthespeedometerhashighspaceresolvingpower,hightimeresolvingpower,andoutstandingcapabilityofapproachingtarget,etc.

简介：一个新方法基于光线扫描的传统的方法被介绍了解决由采用线段在染色性图判定颜色的问题近似曲线--用多角形的近似闭曲线。然后，一个向量坐标能被用来描述曲线而不是曲线方程。判定在一个区域和一个点或一个地点之间的拓扑学关系因此是容易的。并且任何数据处理方法过时的人或物过去常节省存储器，它做改进光线扫描方法在颜色的测量是相当有用的。

简介：Aneasyandpracticalsystemoffeeblefluctuationofliquidelectricalconductivityisdescribed.Thesystem,whichincreasesaprecisiononthethreeordersmagnitudeascomparedwiththatoftherecentdomesticconductivitymeter,isusedtomeasurethefeeblefluctuationoftheconductivitybymeansofcompensationandcomparison,sothatitsolves,theproblemofmeasuringthefeeblefluctuation.

简介：Severalmethodsforinvestigatingthethicknessuniformityofpolymerthinfilmsarepresentedaswellastheirmeasurementprinciples.Acomparisonoftheseexperimentalmethodsisgiven.Thecylindricallightwavereflectionmethodisfoundtocanobtainthethicknessdistributionalongacertaindirection.Itisasimpleandsuitablemethodtoevaluatethefilmthicknessuniformity.

简介：AnewpolymercompositethinfilmDMACB/PEK-cisreported.Afterpolingofthefilm,therefractiveindicesntandnn,thatisthein-film-planeandthenormal-to-film-planerefractiveindicesat633nmandthethicknessdweredeterminedusingthequasi-waveguidem-linemethod.Theresultsofmeasurementandcalculationare:nt=1.6573±0.0017,nn=1.6278±0.0019,andd=1.4278±0.0031μm.

简介：Thecharacteristicofnear-fieldspotsisanalyzed.Thesizeofthenearfieldandtheheatresponsetimeofthehybridrecordmediumtoovercomesuperparamagneticeffectarecalculatedbasedontheheattransfertheory.Anovelmeasuringmethodforthediameterofnear-fieldrecordingspotisalsopresented.Sincethegrainoftherecordingmediaistinyenough,near-fieldopticallithographycanbeaccomplishedwiththeaidofatomicforcemicroscope(AFM).Thediameterofnear-fieldrecordingspotcanbeobtainedbyspecificallydesignedcomputer.Sotherelationshipbetweenthenear-fieldrecordingspotdiameterandtheprobesizeofnear-fieldrecordingsystem,thenearfieldrecordingdistancecouplingbetweenheadanddisccanbegot.

简介：ＭｅａｓｕｒｅｍｅｎｔｏｆＭｏｉｓｔｕｒｅＩｎｓｉｄｅｔｈｅＨｅｒｍｅｔｉｃＰａｃｋａｇｅｏｆＳｅｍｉｃｏｎｄｕｃｔｏｒＤｅｖｉｃｅ①ＸＩＥＸｕｑｉａｎｇ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）ＹＵＴｉｅｙａ...

简介：Operationalsoftwaresystemsoftenexperiencean'aging'phenomenon,characterizedbyprogressiveperformancedegradationandasuddenhang/crashfailure.Softwarerejuvenationisaproactivefault-tolerancestrategyaimedtopreventunexpectedoutagesduetoaging.Anewrejuvenationstrategybasedonmeasurementandtime,andconstructsaSRNmodeltoevaluatethisstrategy.Numericalresultsshowthatthisstrategyoutweighseitherthepurelymeasurementbasedorthepurelytime-basedstrategyandcaneffectivelyimprovesystemperformance.

简介：Inthispaper,anewdirectopticaltriangulation(DOT)formeasuringtheout-ofplanedisplacementisgiven.Inordertostateitsprinciple,DOTisusedtomea-sureamicro-displacementofarigidboty,andatthesametime,themethodofdigitalimageprocessingisalsogiven.

简介：由于TSP和电信服务的差异的复杂性在中国测量电信服务价格(TSP)的全部的变化是困难的。这篇文章分析在电信服务收入和电信服务的交通体积之间的关系并且推出在电信价格的趋势测量全部的变化的方法，它基于消费者“s为电信服务的实际支付。在从1949～2000与时间系列数据描述TSP的变化趋势以后，TSP显示出连续衰退趋势during1949～1975。相反，TSP出现了从1976～1991的一个升起的趋势和在1992以后的一个锋利的衰退趋势。实验测试和电信改革的实际背景支持结果。

简介：作为为一张PC类型纤维接头结束脸的最重要的几何参数之一，顶偏移量能贡献高插入损失和高背思考读物。为参数的一个新奇测量方法，接头旋转--方法，被建议。与方法，一张普通接头结束脸的顶偏移量被测量。结果与由北国3000纤维接头结束脸干涉仪测量了那相比。二结果之间的差别是1.8m，这被发现。同时，顶上的相关错误资源的影响在旋转下面抵消测量--方法和顶核心方法分别地被分析，并且二个错误方程被导出。分析结果看那，与顶核心方法相比轴在以内并且在对它的旋转引起的主要飞机垂直的指示的二另外的亚tilts是否不比原来的轴大倾斜角度，最大。测量错误然后将被至少22.5%与旋转减少--方法。方法的有实行可能被实验证实。

简介：Adopting'simultaneoustransmitting,simultaneousreceiving'operationalscheme,instantaneouspolarizationradar(IPR)canmeasuretargetpolarizationscatteringmatrix(PSM)usingonlyoncetargetechoesintwoorthogonalpolarizationchannels.Firstly,signalmodelandsignalprocessareadvancedundernarrowbandcondition.Secondly,measurementperformancesoftwotypicalIPRwaveformsareanalyzedindetail.Atlast,fieldexperimentsarecarriedoutusingX-bandIPRsystemdesignedbyNationalUniversityofDefenseTechnology(NUDT),China.Comparedwithresultsobtainedbyalternativepolarizationmeasurementscheme,followingresultscanbeobtained:thedifferenceofrelativeamplitudemeasurementresultsissmallerthan2dBandthatofrelativephasemeasurementresultsissmallerthan10?,verifyingthevalidityofinstantaneouspolarizationmeasurementscheme.

简介：ＧｌａｓＴｈｉｃｋｎｅｓＭｅａｓｕｒｅｍｅｎｔＩｎｓｔｒｕｍｅｎｔａｎｄＯｐｔｉｃａｌＦｉｂｅｒＴｒａｎｓｍｉｓｉｏｎ①ＬＩＵＳｈｕｍｉｎ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）Ａｂｓｔｒａｃｔ：Ａｓｙｓｔｅ...

简介：Anovelfluorometerbasedonfiberopticsisbrieflyintroducedforthemeasurementofalgaconcentration.Boththeexcitinglightandthefluorescencefromalgachlorophyllaretransmittedalongafibercable.Bythisway,wecangetalgaconcentrationbymeasuringitschlorophyll-afluorescenceintensity.Theexperimentresultsshowthatthisinstrumentischaracterizedbygoodsensitivity,linearityandaccuracy.

简介：Asystemforglassthicknessmeasurementisintroduced.Thesignalac-quisitionpartofthesystemadoptsparallelplatecapacitor,andmeasuredsignalsaretransformedintopulsefrequencybycapactitance-frequencytransformationcircit,thentransmitteditinopticalfibers.Sothissystemhashighspeed,highprecisionandhighre-sistancetointerference.

简介：Resistance-to-time变换器总是为数字温度测量被使用。基于的一个重设集合(RS)扳机，松驰振荡器基于温度测量电路，它被用来为以后的处理把电热调节器传感器的变化变换成一个频率信号，在这篇文章被介绍了。RS扳机，改变metal-oxide-semiconductor(瞬间)晶体管获得与不同逻辑转变阀值电压设计的二inverters镇静，在松驰振荡器有象Schmitt扳机的一样的功能。RS扳机的优点基于Schmitt扳机是供应电压，薄片温度，和过程变化减少依赖。这个温度测量电路在能测量温度到精确性的一个临床的温度计薄片被使用了比0.05fect好吗？？

简介：Thesecurityofcivilengineeringisanimportanttaskduetotheeconomic,socialandenvironmentalsignificance.Comparedwithconventionalsensors,theopticalfibersensorshavetheiruniquecharacteristics.Beingdurable,stableandinsensitivetoexternalperturbations,theyareparticularinterestingforthelong-termmonitoringofcivilstructures.Focusisonabsolutemeasurementopticalfibersensors,whichareemergingfromthemonitoringlargestructural,includingSOFOsystem,F-Popticalfibersensors,andfiberBragggratingsensors.Theprinciple,characteristicandapplicationofthesethreekindsofopticalfibersensorsaredescribedtogetherwiththeirfutureprospects.

简介：WehavemeasuredthedeepenergyleveloftheInP:Fewhichissemi-insulatorthroughthemethodofOTCS.TheeffectoflightintensityonOTCSmeasurementismainlydiscussed.ThereareelectrontrapofET=0.034eVandholetrapofET=1.13eVinInP:Feunderthestronglightandlowtemperature.ThelocationoftheOTCSpeakofelectrontrap(ET=0.34eV)movestowardsthedirectionofhightemperaturer,whenthelightintensitywasincreased,ETisdifferentunderdifferentlightintensity.Itiscorrectedintermsoftheorythatthestuffratioofthedeepenergylevelisaffectedbythelightintensity.Theexperimentsshowthattheerrorisdecreasedgreatlywiththecorrection.

简介：Sequentialmeasurementprocessingisofbenefittobothestimationaccuracyandcomputationalefficiency.Whenthenoisesarecorrelatedacrossthemeasurementcomponents,decorrelationbasedoncovariancematrixfactorizationisrequiredinthepreviousmethodsinordertoperformsequentialupdatesproperly.Anewsequentialprocessingmethod,whichcarriesoutthesequentialupdatesdirectlyusingthecorrelatedmeasurementcomponents,isproposed.Andatypicalsequentialprocessingexampleisinvestigated,wheretheconvertedpositionmeasurementsareusedtoestimatetargetstatesbystandardKalmanfilteringequationsandtheconvertedDopplermeasurementsarethenincorporatedintoaminimummeansquarederror(MMSE)estimatorwiththeupdatedcross-covarianceinvolvedtoaccountforthecorrelatederrors.Numericalsimulationsdemonstratethesuperiorityoftheproposednewsequentialprocessingintermsofbetteraccuracyandconsistencythantheconventionalsequentialfilterbasedonmeasurementdecorrelation.