简介:摘 要: 利用EXCEL中的VBA语言编写程序,配合使用VLOOKUP函数和“下拉菜单”,使得工程数据在EXCEL的录入工作变得简单快捷,值得同行业或相关类似工作借鉴和推广。
简介:Effectsofthemixtureofβ-ecdysoneandpolypodine-B(2:1W/W)onthemoultingandgrowthofprawn,Penaeusorientalisswerestudiedinlaboratorybyrearingtheanimalwiththeaddedcompounddiets.Theresultsshowedthattheadditionofthemoultinghormone(M.H)mixturetocompounddiets,from1.33×10-6to30×10-6,couldincreasemoultingactivityandgrowthrateoftheprawntodifferentextents,amongwhichthe5.33×10-6-10.67×10-6additionhadstatisticallysignificanteffects.However,60×10-6addeddietscausedmoultingandgrowthinhibitionsandcuticlethickening.Theanalysesofprotein,waterandashcontentsoftheprawnshowednoremarkabledifferencesbetweenhormonedosedanimalsandthecontrol.
简介:Basedonisotropiclinearporoelastictheoryandundertheundrainedcondition,wesummarizethreeequationsconnectingtheSkempton’scoefficientBwiththegroundwaterlevel.Afteranalysis,weproposeamethodtocalculatetheSkempton’scoefficientBaccordingtotherelationshipbetweenwaterlevelandtidalstrain.WiththismethodwecangetthevalueofBwithouttheearthquakeoccurrence,whichcanprovidethehighfrequencywavesforresearch.Besides,wecanalsogetthein-suitSkempton’scoefficientBwithouttheexperimentofrockphysics.Inaddition,weanalyzetheobserveddataofChangpingstationrecordedingroundwatermonitoringnetwork(abv.,GMN)beforeandaftertheWenchuanMS8.0withthismethod,andfindoutthere’saslightchangeofthevalueofBaftertheseismicwavespassedby,whichimpliesthatthepropagationofseismicwavesmayhavebroughtsomevariationstotheporoelasticmediumofthewell.
简介:许多有缺点的雷达回响可以用雷达数据应用,特别雷达数据吸收和量的降水估计引起严重问题。在这研究,测试模式在CINRAD(中国新一代天气雷达)由测试信号或雷达硬件失败引起了SA和SB雷达运作的观察被调查。为了把测试模式与雷达回响的另外的类型区分开来,例如降水,清除空气和另外的非气象学的回响,包括有效反射率数据百分比(RZ)的五个特征参数,速度RF(合拢的范围)数据百分比(RRF),失踪的速度数据百分比(RM),平均沿着方位角反射率变化$\left({R_{N_{r,Z}}}\right)$并且平均沿着横梁反射率变化$\left({R_{N_{一,Z}}}\right)$被建议。基于模糊逻辑方法,一个测试模式鉴定算法被开发,并且从雷达回响的所有不同类型的统计结果显示算法的表演。有在测试模式内定位的重降水回响的二个典型箱子的分析被执行。统计结果证明测试模式鉴定算法表现很好,自从测试模式在大多数情况中被认出。而且,算法能有效地移开测试模式信号并且在重降雨事件保留强壮的降水回响。
简介:Inthisstudy,weadoptanimprovedBayesianapproachbasedonfree-knotB-splinebasestostudythespatialandtemporaldistributionoftheb-value.SynthetictestsshowthattheimprovedBayesianapproachhasasuperiorperformancecomparedtotheBayesianapproachaswellasthewidelyusedmaximumlikelihoodestimation(MLE)methodinfittingtherealvariationofb-values.WethenapplytheimprovedBayesianapproachtoNorthChinaandfindthattheb-valuehasaclearrelevancetoseismicity.Temporalchangesofb-valuesarealsoinvestigatedintwospecificareasofNorthChina.Weinterpretsharpdecreasesintheb-valuesasusefulmessagesinearthquakehazardanalysis.
简介:Duetotheexistenceofthermaloffsets,globalsolarirradiancesmeasuredbypyranometersaresmallerthanactualvalues,anderrorsarelargerinthedaytime.Untilnow,thereisnouniversally-recognizedcorrectionmethodforthermaloffseterrors.Therefore,itisimperativetoidentifyaconvenientandeffectivecorrectionmethod.Fivecorrectionmethodswereevaluatedbasedonthedatameasuredfromafieldexperimentfrom23Januaryto15November,2011.Resultshaveshown:1)Temporalvariationcharacteristicsofthermaloffsetsinthefourtestedpyranometersareconsistent.2)Amongthefivemethods,non-dimensionalquantitymethodissuggestedforusetocorrectthermaloffsets,becauseitisconvenientandnomodificationofinstrumentsisrequired.Ifcollocatednetlongwaveradiationandwindspeeddataareavailableandtheiruncertaintiesaresmall,thehistoricalsolarradiationdatasetscanalsobecorrected.Andcorrectioneffectsbythemethodarebetter.
简介:TheeffectsofmagnituderoundingandofthepresenceofnoiseintheroundedmagnitudesontheestimationoftheGutenberg–Richterb-valueareexplored,andthewaystocorrectfortheseeffectsareproposed.Fortypicalvalues,b=1androundingintervalDM=0.1,theroundingerrorisapproximately-10-3anditcanbecorrectedtoanegligibleapproximately-10-5.Forthesametypicalvalues,theeffectofnoisecanbelarger,dependingonthecharacteristicsofthenoisedistribution;fornormallydistributednoisewithstandarddeviationr=0.1,thecorrectb-valuemaybeunderestimatedbyafactor*0.97.
简介:明确表达了用局部相关法在数据域层析成像的不适合标准。与基于差分的反演相比,基于相关的反演对局部极小值敏感度较低。可是相关值却常常在同相轴之间受到串音的影响,另外,由于是沿整个时间轴求和,所以全局相关值仅仅给出一个模型运动误差的一般概念。作为一种选择,Gaussian时窗局部相关法是能够提取模拟数据和观测数据之间不适合中的局部运动误差值的。与全局相关法相比,局部相关法对地震同相轴的串音敏感度也较低,原因是作为一个时间函数只需进行局部求和。因为低相关串音造成清洁伴随震源,所以产生清洁梯度值。采用与地震资料带宽一致的补偿函数改善梯度值,与用于消除无限带宽资料的线性补偿函数相比,该补偿函数更具有现实意义。