简介:2004年11月-美国国家仪器有限公司(NationalInstruments.NI)推出了NI可互换虚拟仪器(IVI)兼容工具包2.2版(InterchangeableVirtualInstruments(IVI)CompliancePackage2.2).这一最新版的软件包包含了若干IVI类驱动程序和支持库,它们对于开发和实现各种运用仪器互换性的应用系统而言是必不可少的。通过这一全新软件包,那些需要仪器互换性的军用和航天测试系统开发人员现在就能迅速而轻松地开发符合IVI的仪器驱动程序。
简介:类固醇作为在动物和植物表明分子工作。当动物类固醇荷尔蒙被抄写因素的原子受体家庭察觉时,在植物的brassinosteroids(BR)被房间表面受体kinase察觉,BRI1。最近的研究证明了到BRI1的细胞外的域的那BR绑定与另一受体kinase导致kinase激活和dimerization,BAK1。激活的BRI1或BAK1然后调整,可能间接地,BIN2kinase的活动或BSU1磷酸酶,它直接调整phosphorylation地位和二个相应抄写因素,BZR1和BES1的原子累积。BZR1和BES1直接绑在BR应答的基因的倡导者调整他们的表示。表明小径的BR为在一般来说由房间表面受体发信号的植物和类固醇发信号的两受体kinase成为了一个范例。
简介:Intheprocessofdevelopingandadjustingtheproductinthisproject,weneedsomesignalsources,whichusuallyaffordsquareorsinewave.Generallythesquarewareisusedfordigitlogic,butfortheanalogsignalwaveisusedtojudgethelinearity'squalitiesandotherfunctionsoftheelectriccircuit.Howeverthecommonready-madesignalsourceisallunidirectionalsinewave,thesignalsourceswhosephaseshiftcanarbitrarilyberegulatedandwhichhaveprecisephasearestillnotavailableonethecurrentmarket.
简介:Anewiterativemethodforsignal,restorationhasbeenpresented.AnestimateoperatorW_κwhichisrelatedtoerroroperatorB_κintherestorationprocessisintroducedtodecreasetheestimateerrorandincreasetheconvergencerate.Theeffectofnoiseontheestimateprocesshasalsobeendescribed.Finally,themethodhasbeenappliedtothedeconvolutionofablurredsignal,andtheresultsvalidatethemethod.Acomparisonbetweenthepresentedmethodandthegeneralmethodhasalsobeengiven.
简介:Basedonuniformcirculararrayanditselementoutputsignaldelaydelayanovelmethodforestimationofspatialfrequency,azimuthandelevationispresented.Withoutanyspectralpeaksearchandparameterspairing,theresultingmethodis(?)resolutionandsmallvariance,eveninshortdatalength.Computersimulation(?)effectivenessofthismethod.
简介:收集神经活动数据从醒着,自由地表现动物,我们由现代芯片开发使小型化的可植入的记录系统:薄片(PSoC)上并且通过在外皮的长期的电极的可编程的系统。与PSoC家庭成员CY8C29466,运作的完成的系统和仪器放大器,过滤器,定时器,广告变流器,和连续通讯,等等。信号处理被处理虚拟仪器技术。这些,因素显著地装的所有影响价格和工程的发展周期。结果证明系统能记录并且分析神经原连续地产生一个星期或更多的神经extrocellular分泌物。这为神经科学和信息工程technique.The电路的学科交差的研究是很有用的,设备的建筑学能带着另外的小动物为神经生物学和研究被改编。
简介:IMPCSRRFGroupcooperatingwithBINPhasfulfilledthefollowingprojects.PCIbasedRFsignalgenerator;PLDcenteredRFstationinterlockandsurveillanceunit;Highfrequencyanalogsignalprocessingunits;CVIandWindowsplatformbasedmonitorandoperationinterface.
简介:ThetransmissiondelayofphotogeneratedcarriersinaCMOS-process-compatibledoublephotodiode(DPD)isanalyzedbyusingdevicesimulation.TheDPDsmallsignalequivalentcircuitmodelwhichincludestransmissiondelayofphotogeneratedcarriersisgiven.Fromanalysisonthefrequencydomainofthecircuitmodelthedevicehastwopoles.OnehastherelationshipwithjunctioncapacitanceandtheDPD'sload,theotherwiththedepthandthedopingconcentrationoftheN-wellintheDPD.DifferentdepthoftheNwellanddifferentareaoftheDPDswithbandwidthwerecompared.TheanalysisresultsareimportanttodesignthehighspeedDPDs.
简介:从臭氧卫星观察和一般循环的数据分析,这篇文章讨论季节并且在西藏上的全部的臭氧的interannual变化。分析在西藏上在interannual臭氧变化在伪鈥擝iennial摆动(QBO)上被做了,与在热带上并且非的QBO比较在西藏的一样的纬度的鈥攎ountain区域。事实被看那西藏臭氧QBO有29个月的一个平均时期,与8杜的一个平均振幅。西藏臭氧QBO是到在热带上的同温层的风QBO的反相,即30hPa鈥攚ind是的热带在东方,臭氧有剩余,和副诗句。这篇文章也在西藏上在臭氧QBO上讨论大气的转移的影响。关键词臭氧-QBO-西藏作者被强迫到中国科学院(KZ951-A-205-05),中国(49775276)的国家自然科学基础和大气的物理的研究所,中国科学院(8-2212)。作者希望谢谢在NASA/戈达德空间飞行中心处理队的臭氧,美国为他们TOMS臭氧7的客气的预备,NRCC,加拿大,为他们的10.7厘米太阳的收音机流动数据和NCAR为标准化了30hPa在新加坡的带的风数据。
简介:这份报纸早为地震评估不同特征警告。在大小,震中距离和计算参数之间的可伸缩的关系从USGS从地震事件数据被导出。标准STA/LTA方法被增加二个新参数在P波浪的发作前消除尖铁类型噪音和小pulsetype噪音的效果修改。在P波浪的察觉以后,算法从P波浪的开始的3秒提取12种参数。这些参数的然后逐步的回归分析被执行估计震央的距离和大小。六个不同参数被选择估计震央的距离,和为所有419估计的中部的错误是16.5km。四个参数最佳地被联合估计大小,并且为所有事件的吝啬的错误是0.0个大小单位,与0.5的标准差。基于评价结果,最后,另外的工作被建议改进结果的精确性。
简介:Apoptosisisaformofgeneticallyprogrammedcelldeath,whichplaysakeyroleinregulationofcellularityinavarietyoftissueandcelltypesincludingthecardiovasculartissues.Underbothphysiologicalandpathophysiologicalconditions,variousbiophysiologicalandbiochemicalfactors,includingmechanicalforces,reactiveoxygenandnitrogenspecies,cytokines,growthfactors,oxidizedlipoproteins,etc.,mayinfluenceapoptosisofvascularcells.TheFas/Fasligand/caspasedeath-signalingpathway,Bcl-2proteinfamily/mitochondria,thetumorsuppressivegenep53,andtheproto-oncogenec-mycmaybeactivatedinatheroscleroticlesions,andmediatesvascularapoptosisduringthedevelopmentofatherosclerosis.Abnormalexpressionanddysfunctionoftheseapoptosis-regulatinggenesmayattenuateoracceleratevascularcellapoptosisandaffecttheintegrityandstabilityofatheroscleroticplaques.Clarificationofthemolecularmechanismthatregulatesapoptosismayhelpdesignanewstrategyfortreatmentofatherosclerosisanditsmajorcomplication,theacutevascularsyndromes.
简介:TheChnstantMndulusAlgoriihm(CMA)enjoyWidepreadpopularityasmethodsforblindbeamform-ingandequalzzationofcommunicationsignals.CMAisstraightforwardtoimplement,robust,andcomputation-zllyofmixierarecomplexity.Furtherlnore,itisinsensitiuetoarrayimperfection.Inanenvironmentcontaintingmultipleconsrantmndulussignals,thesignalextractedbyCMAdependsontherelativepoweroftheincidentsig-nals.Accordingpreviousanrks,theCMAisI,ronewcapturetheStrongestConstantModulus(CM)Signalatthe,outputofthearray.Inthispoper,weshowthattheweakCMsignalcouldberecoveredbyCMA1-2andCMA2-1whenseuingspecialstep-siss.Szmulatzonexamplesconfzrmourremarks.
简介:Themainfunctionofelectronicsupportmeasuresystemistodetectthreatingsignalsinordertotakecountermeasuresagainstthem.Toaccomplishthisobjective,aprocessofassociatingeachinterleavedpulsewithitsemittermustbedone.Thisprocessistermedsortingorde-interleaving.Anovelpointsymmetrybasedradarsorting(PSBRS)algorithmisaddressed.Inordertodealwithallkindsofradarsignals,thesymmetrymeasuredistanceisusedtoclusterpulsesinsteadoftheconventionalEuclideandistance.Thereferencepointsofthesymmetricalclustersareinitializedbythealternativefuzzyc-means(AFCM)algorithmtoamelioratetheeffectsofnoiseandthefalsesorting.Besides,thedensityfiltering(DF)algorithmisproposedtodiscardthenoisepulsesorclutter.Theperformanceofthealgorithmisevaluatedundertheeffectsofnoiseandmissingpulses.IthasbeenobservedthatthePSBRSalgorithmcancopewithalargenumberofnoisepulsesanditiscompletelyindependentofmissingpulses.Finally,PSBRSiscomparedwithsomebenchmarkalgorithms,andthesimulationresultsrevealthefeasibilityandefficiencyofthealgorithm.