简介:基于卫星雷达的工作原则,地震变丑地由interferometric测量了合成的孔(InSAR)地面排水量的设计在卫星的视觉(LOS)的线与seismogenic差错被联系。然而,LOS设计是复杂的,并且不仅与上升/下降的模式和SAR数据的发生角度有关,而且与罢工和差错的运动感觉有关。甚至为一样的地震,从不同上升/下降的数据导出的LOS变丑能是几乎在另一种情况中在一种情况中相同,却相当不同,它与域观察做InSAR地震变丑和它的比较的解释困难。在这研究,我们拿了在罢工,差错运动感觉,和上升/下降的模式,以及3D变丑回答的InSAR和差错的LOS观察敏感之间的关系的定量分析。我们用上升/下降模式在地震的不同类型学习了LOS变丑领域的特征和差别,与为地震的一种罢工滑倒类型的关系的特别地详细的分析。我们也与不同罢工和最佳的观察数据模式总结了差错的LOS变丑领域的特征。作为例子拿罢工滑倒Yushu地震和正常Gaize事件,我们使用了上升/下降的模式的SAR数据验证量的计算的结果。这些分析愿望不仅提供InSAR地震变丑领域的更合理的解释并且而且帮助理解数据与不同观察模式揭示的地震变丑领域的差别,因此在地震学支持InSAR技术的应用程序。
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简介:沿着陡峭的斜坡的分开的岩石块的下坡的运动是沿着一个斜坡并且在山谷底部上的脚危及基础结构的安全的一个重要过程,但是仅仅有限的知识在对如此的块的运动的速度和距离的各种各样的因素的影响上是可得到的。我们在斜坡上讨论团的影响和岩石块,斜坡的险峻,和overburden的厚度的形状,在岩石的运动的距离上,不同地在256个领域实验被观察与的块与176m的高度在斜坡上从3个不同位置塑造了块。地测试的结果的统计评估证明斜坡坡度调节并且压垂是主要因素,岩石群众的表格是第二个因素,并且团是第三个影响因素。当岩石群众的团是15m时,它是为岩石群众的运动的最大的平均加速<27kg,岩石群众的表格是薄片,坡度的条件是平均59.6潣摮湥慳整?慨楶杮栠杩敨?慰慲晦湩愠摮氠睯牥愠潲慭楴楣祴琠慨?敲楳畤污漠汩s吗?
简介:Thepitching-downflappingisanewtypeofbionicflapping,whichwasinventedbytheauthorbasedonpreviousstudiesontheaerodynamicmechanismsoffruitfly(pitching-up)flapping.ThemotivationofthisinventionistoimprovetheaerodynamiccharacteristicsofflappingMicroAirVehicles(MAVs).Inthispaperthepitching-downflappingisbrieflyintroduced.Themajorworksinclude:(1)Computingthepowerrequirementsofpitching-downflappinginthreemodes(advanced,symmetrical,delayed),whichwerecomparedwiththoseofpitching-upflapping;(2)Investigatingtheeffectsoftranslationalaccelerationtime,Δτ_t,androtationaltime,Δτ_r,attheendofastroke,andtheangleofattack,α,inthemiddleofastrokeontheaerodynamiccharacteristicsinsymmetricalmode;(3)Investigatingtheeffectofcamberonpitching-downflapping.Fromtheaboveworks,conclusionscanbedrawnthat:(1)Comparedwiththepitching-upflapping,thepitching-downflappingcangreatlyreducethetime-averagedpowerrequirements;(2)TheincreaseinΔτtandthedecreaseinΔτ_rcanincreaseboththeliftanddragcoefficients,butthetime-averagedratiooflifttodragchangesalittle.Andαhassignificanteffectontheaerodynamiccharacteristicsofthepitching-downflapping;(3)Thepositivecambercaneffectivelyincreasetheliftcoefficientandtheratiooflifttodrag.
简介:InMarchthisyear,theGovernmentofJiangsuXinghuaCityarrivedatanagreementonabiomassstrawpowergenerationprojectwithAsianPowerIndustryInvestmentCo.Ltd.(Singapore)inMaoshanTown,XinghuaCity.Theprojectwillbeinstalledwithtwo12-MWgeneratingunitsandwillbeabletoproduce120GWhofelectricityayear.
简介:Backconversionisanintrinsicphenomenoninnonlinearfrequencydown-conversionprocesses.However,thephysicalreasonforitsoccurrenceisnotwellunderstood.Here,wetheoreticallyrevealthatbackconversionistheresultofaπ-phasejumpassociatedwiththedepletionofoneinteractingwave.Bysuppressingtheidlerphasejumpthroughadeliberatecrystalabsorption,thebackconversioncanbeinhabited,thusenhancingtheconversionefficiencyfromthepumptothesignal.TheresultspresentedinthisLetterwillfurthertheunderstandingofnonlinearparametricprocessesandpavethewaytowardthedesignofhighlyefficientdown-conversionsystems.
简介:Thispaperintroducesthreemodelsofreading.Thenitana-lyzesthedatagatheredfromanexperimentonthecomparisonofthe"top.down"andthe"bottom-up"approachesandaccord-inglydrawstheconclusionthattheformerapproachishelpfulinimprovingstudents’readingcomprehensionwhilethelatterisusefulindevelopingtheirwritingskillsaswellastheirknowledgeofvocabularyandsentencestructure.Finallythispaperpresentsaprocedureoftheapplicationofthe"interactiveapproach",whichprovestobeproductiveinteachingcollegeEnglishinten-sivereading.
简介:Wepresentatabletop-scalespotlight-modedown-lookingsyntheticapertureimagingladar(DLSAIL)demonstrator,whichisperformedbyacollimatorwith10mfocallengthtosimulatethefar-fieldopticalfield.Aspecular-pointtargetandadiffuse-reflectiontargethavebeenusedforresolutionanalysisand2Dimaging,respectively.Theexperimentalresultisinagreementwiththetheoreticaldesign.Theexperimentsetupiscapableofsimulatingarealapplicationscenarioforfurtherstudy.ThisLetterisfocusedonthepropositionandimplementationofspotlight-modeDLSAIL.
简介:Fieldinvestigationhasrevealedthatthelarge-scaledextralstrike-slipmovementandtheassociatedtectonicdeformationalongtheRedRiverfaultzonehavethefollowingfeatures:geometrically,theRedRiverfaultzonecanbedividedintothreedeformationregions,namely,thenorth,centralandsouthregions.ThenorthregionliesontheeasternsideoftheNorthwestYunnanextensionaltaphrogenicbelt,whichischaracterizedbythe3setsofrift-depressionbasinsstrikingNNW,NNEandnearN-SsincethePliocenetime,andonitswesternsideistheLanping-YunlongcompressivedeformationbeltofthePaleogenetoNeogene;thedeformationinthecentralregionischaracterizedbydextralstrike-sliporshearing.TheeastYunnanMiocenecompressivedeformationbeltliesontheeasternsideofthefaultinthesouth,andtheTengtiaohetensilefaultdepressionbeltislocatedonitswest.Intermsoftectonicgeomorphology,theaforementioneddeformationisrepresentedbybasin-rangetectonicsinthenorth,linearfaultedvalley-basinsinthecentralpartandcompressive(ortensional)basinsinthesouth.Amongthem,thegreatvarianceinelevationoftheplanationsurfacesonbothsidesoftheCangshan-ErhaifaultsuggestsprominentnormalfaultingalongtheRedRiverfaultsincethePliocene.Fromtheviewpointofspatial-temporalevolution,themainactiveportionofthefaultwasthesouthernsegmentinthePaleogene-Miocene-Pliocene,whichisrepresentedby"tearing"fromsouthtonorth.ThemainactiveportionofthefaulthasmigratedtothenorthernsegmentsincethePliocene,especiallyinthelateQuaternary,whichischaracterizedbyextensionalslipfromnorthtosoutheast.ThesizeofthedeformationregionandthemagnitudeofdeformationshowthattheeasternplateoftheRedRiverfaulthasbeenanactiveplateoftherelativemovementofblocks.