简介: <正> Withnoexplanatoryliteratureoraudioguides,ZendaiMoMA’sexhibition"SoftPower:AsianAttitude"certainlydoesn’tspoon-feedusart.Curatorial 正>
简介:Asawhole,theEuropeanUnionhasyettocometoaclearconsensusonglobalization,manifestingakindofself-contradictingmentalityandconflictedpolicyorientations,evidencedbyitsdesiretoreapthebenefitsbroughtaboutbyglobalizationwhileatthesametimetryingtoevadechallenges.Forexample,theEUactivelyresistsUSprotectionism,whileclingingtoprotectionistmeasuresinitsownpolicies;anditsupportsthemechanismsforinternationalmultilateralcooperation,butatthetimeitwillfullyactstochangetherules.TheemergenceoftheEU'sconflictedattitudetowardglobalizationmaybeattributedtothefactthatithastoomanymemberstateswithawidedisparityintheireconomicperformancesinglobalization,whichhasmadeitdifficultforthemtoreachaconsensus.ItcanalsoberelatedtothecomplexityoftheEU'sinternaltradepolicyanddecision-makingmechanisms.Thismentalitywillaffectitsroleintheglobaleconomy,asitislikelythattheEUwillplaytherolesofreformerofthemechanismformultilateralcooperation,middlemanininternationaltradedisputes,andstragglerineconomicreforms.
简介:ThestudypresentstheattitudetowardsmoneyamongadultMongolians.Theresearchfocusedondifferencesoftheattitudetowardsmoneyrelatedtoage,gender,andemploymentinMongolianpeople.TheaimofthisstudywastoexaminethedifferentiationoftheattitudetowardsmoneyofadultMongoliansrelatedtosatisfactionwithlife,thesenseofsecurity,andtheroleofsocio-demographicalparameters,suchasage,gender,andemployment.People’sattitudestowardsmoneyseemtobeacquiredthrougheducation,professionalexperience,andmonetaryhabits.Peopleperceivedmoneyasasymbolofasenseofsecurity,amarkerofachievementorstatus,andthesourceofworryoranxiety.Researchersnotedthatmoneyhasamulti-dimensionalpsychologicalmeaning.TheresearchsampleconsistedofMongolianpeople:Agroupof300Mongolians.Theageofparticipantsvariedfrom21to60yearsold.StatisticalVersion10.0wasusedtoanalyzethedata.Theresultsshowedthattheattitudetowardsmoneydependsonthesatisfactionwithlife,thesenseofsecurity,andweredifferentbygenderandemployment.Mongolianshavestrongtendenciestousemoneyasasymbolofpowerandstatus.However,thistendencyisstrongerinthegroupofmenincomparisontowomen,inthisculture.Retention-Timewasbiggerdifferentiatedbyvariableemployment.Accordingtotheresults,therewasnosignificantdifferenceinage.Furthermore,therewerenegativeassociationbetweensatisfactionwithlifeanddistrustinthegroup.Theywhohavefinancialworryseemtobelesssatisfiedwiththeirlife.ThemostnumberofpeopleinMongoliansampleevaluatedownincomeasaverage.Thepercentagesofpersonalprofessionalactivitywerethehighestthananothercategoryinthegroup.Theresultsofstatisticalanalysisshowedthatdifferencesoffrequenciesofsomecomponentsofeconomicsecurityweresignificantinthesample.Insum,ourstudywillcontributetoknowledgeabouttheimportanceofgenerallifesatisfactionandfeelingsecurityontheattitudetowardmoney.The
简介:Itisanimportantcontrolprocesstooperatemotionofansubmergencerescuevehicle(SRV).Seeingthatthemotionofthesubmergencerescuevehicleisspecial,itisnecessarytoemploynon-linearpredictivecontrolsystem.Forthisreason,continuousdynamicperformanceofthesystem,thelogicalcomponentsandtheoperativerestraintsareexpressedasthenon-linearequationsofstatewiththeinequalityrestraints,andthemodelprincipleofhybridsystemisintroduced.TheconclusionshowsthatitcomestruetoexactlycontrolpositionandattitudeoftheSRVbymeansofnon-linearmodelpredictivecontrol.Thetestinamodelbasinhasalsoprovedthattheabovemethodsareefficient.
简介:Theobjectiveofthispaperistodevelopaneuralnetwork-basedresidualgeneratortodetectthefaultintheactuatorsforaspecificcommunicationsatelliteinitsattitudecontrolsystem(ACS).First,adynamicmultilayerperceptronnetworkwithdynamicneuronsisused,theseneuronscorrespondtoasecondorderlinearInfiniteImpulseResponse(IIR)filterandanonlinearactivationfunctionwithadjustableparameters.Second,theparametersfromthenetworkareadjustedtominimizeaperformanceindexspecifiedbytheoutputestimatederror,withthegiveninput-outputdatacollectedfromthespecificACS.Then,theproposeddynamicneuralnetworkistrainedandappliedfordetectingthefaultsinjectedtothewheel,whichisthemainactuatorinthenormalmodeforthecommunicationsatellite.Thentheperformanceandcapabilitiesoftheproposednetworkweretestedandcomparedwithaconventionalmodel-basedobserverresidual,showingthedifferencesbetweenthesetwomethods,andindicatingthebenefitoftheproposedalgorithmtoknowtherealstatusofthemomentumwheel.Finally,theapplicationofthemethodsinasatellitegroundstationisdiscussed.
简介:Inremotesensingorlasercommunicationspacemissions,spacecraftneedfastmaneuverandfaststabilizationinordertoaccomplishagileimagingandattitudetrackingtasks.However,fastattitudemaneuverscaneasilycauseelasticdeformationsandvibrationsinflexibleappendagesofthespacecraft.Thispaperfocusesonthisproblemanddealswiththecombinedcontroloffastattitudemaneuverandstabilizationforlargecomplexspacecraft.Themathematicalmodelofcomplexspacecraftwithflexibleappendagesandmomentumbiasactuatorsonboardispresented.Basedontheplantmodelandcombinedwiththefeedbackcontroller,modalparametersoftheclosed-loopsystemarecalculated,andamultiplemodeinputshaperutilizingthemodalinformationisdesignedtosuppressvibrations.Aimingatreducingvibrationsexcitedbyattitudemaneuver,aquinticpolynomialformrotationpathplanningisproposedwithconstraintsontheactuatorsandtheangularvelocitytakenintoaccount.Attitudemaneuversimulationresultsofthecontrolsystemswithinputshaperorpathplanninginloopareseparatelyanalyzed,andbasedontheanalysis,acombinedcontrolstrategyispresentedwithbothpathplanningandinputshaperinloop.Simulationresultsshowthatthecombinedcontrolstrategysatisfiesthecomplexspacecraft’srequirementoffastmaneuverandstabilizationwiththeactuators’torquelimitationsatisfiedatthesametime.
简介:Toensurethesuccessofthee-learninginitiatives,OUMhasdevelopeditsowne-learningmanagementsystem,knownasmyLMS.Sinceitsintroduction,manymodificationsandimprovementshavebeenintroducedtoincreaseitseffectiveness.ItisnowtimelythatOUMtakestockofitsstudents'attitudestowardse-learning.Thus,asurveywasconductedonabout1,000studentsatoneofOUM'sownlearningcentres,thatis,theKelantanRegionalCentrel.Thestudyindicatedthatgenerallytheteachercohorthadasomewhatneutralattitudetowardse-learning.Theuseofe-learningwasmorespecificallyaimedatachievingshorttermgoalsofobtaininggoodcourseworkandexaminationgradesbycapitalizingontheuseoftheDiscussionBoardandCourseware.AcloserexaminationrevealsthatthefemalesprefertheDiscussionBoardwhilethemalesprefertheCourseware.LearnersintheEngineeringandEnglishprogrammeshadmorepositiveattitudestowardse-learningcomparedtolearnersintheMathematicsandScienceprogramme.LearnerswithCGPA>3.0whoarecategorizedashighachieversaremorepositivetowardse-learningascomparedtothelowachievers(CGPA<3.0).Agedifference,learners‘incomepermonth,learners’Internetande-learninghabitswerealsofoundtobepredictorsofattitudetowardse-learning.
简介:基于排斥粒子,过滤器(MPF)被交上的一个算法在这篇论文详细说明解决太空船态度评价问题:用偏导的旋转罗盘和向量观察的态度和旋转罗盘偏爱评价。在这个算法,由外面排斥在太空船模型的线性地的州的出现,Kalman过滤器与每个粒子被联系以便减少州的空间和计算负担的尺寸。态度向量的分发被一套粒子接近并且估计了使用粒子过滤器,当旋转罗盘偏爱的评价被使用Kalman过滤器为一个态度粒子获得时。这个修改MPF评估者的效率通过充分激活的僵硬身体的数字模拟被验证。为比较,unscentedKalman过滤器(UKF)也被用来计量MPF的表演。在这份报纸介绍的结果清楚地证明MPF比在应付非线性的模型的UKF优异。关键词态度评价-粒子过滤器-太空船-非线性的过滤器-四元数这个工作被研究资金支持因为中国(号码20050213010)的高等教育的博士程序,国家高技术研究和开发中国(863程序)(号码2004AA735080)编程序。刘亚秋加入了信息的学院,东北林地大学,哈尔滨,中国自从2004,他当前在哪儿副教授。他收到了B.Eng的度。(电力工程)电的Technolog从哈尔滨开创M.Eng。(控制理论和工程)从从在1990,1999和2004的哈尔滨工学院的东北林地大学和博士(航行,指导和控制)分别地。他的研究兴趣包括进程控制,聪明的控制和软计算,差错诊断。是的江学元论文的一个相应作者,收到了B.Eng的学位。(自动控制),M.Eng。(控制理论和工程)并且从在2000,2002和2006的哈尔滨工学院的博士(航行,指导和控制)分别地。他的主要研究兴趣在太空船态度控制,态度评价,和非线性的过滤器。马光富是在学院航天学的一个完整的教授,哈尔滨工学院,哈尔滨,中国,自从1997。他收到了B.Eng的学位。(自动控制),M.Eng。(控制理论和申请)并且�