简介：Therecentadvancesontheresearchandtheapplicationsoftheintegratedopticsacousto-opticspectrumanalyzer(IOSA)arereviewed.Theoperatingprinciple,ar-chitecture,characteristicsandtechnology,andfuturedevelopmentofthedifferentre-ceiersaredescribed.

简介：Akindofnovelbinaryphasecodenamedsidelobesuppressioncodeisproposedinthispaper.Itisdefinedtobethecodewhosecorrespondingoptimalsidelobesuppressionfilteroutputstheminimumsidelobes.Itisshownthattheredoexistsidelobesuppressioncodesbetterthantheconventionaloptimalcodes-Barkercodes.Forexample,thesidelobesuppressioncodeoflength11withfilteroflength39hasbettersidelobelevelupto17dBthanthatofBarkercodewiththesamecodelengthandfilterlength.

简介：TheAndroidplatformisthemostpopularmobileoperatingsystem.WiththeincreaseofthenumberofAndroidusers,alotofsecurityissueshaveoccurred.InordertodetectthemaliciousbehaviorsfortheinstalledAndroidApps,inthispaper,weproposeanAndroidmalwaredetectingschemebyintegratingstaticanddynamicanalysismethods.WeuseAndroguardandDroidBoxtoextractthefeatures,andthenremovetheirrelevantfeatures.Thenweemploythesupportvectormachine(SVM)toclassifytheAndroidmalwareandbenignware.Fromtheresultofourproposedscheme,theproposedintegratedstaticanddynamicanalysisschemewithSVMcaneffectivelydetecttheAndroidmalware.

简介：ForanSOI-FPGA(silicon-on-insulatorfieldprogrammablegatearrays)(VS1000)fabricatedwith0.5mSOI-CMOS(silicon-on-insulatorcomplementary-metal-oxide-semiconductor)process,acompleteintegratedplatformofFPGAcomputer-aideddesign(CAD)toolset(VDK)isdeveloped,whichcanconverttheVerilogHDL(hardwaredescriptionlanguage)descriptionintoabitstreamandfinallydownloaditintoanFPGA.ExperimentsandtestingverifythatthisFPGACADworkswellandefficiently.

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简介：Anactiveandreactivecombinedspotpricemodelandthecorrespondingalgorithmareintroducedinthispaperbasedonthetheoryofoptimalpowerflow.Differentfromthetraditionaleconomicdispatchinthefieldofspotprice,theobjectivefunctionistominimizegenerationcostsbasedonpricingreactivepower.Thenconsideringthecharacteristicsofwindturbines,processingmethodsofwindfarmsinoptimalpowerflowisdiscussed.Finally,thefeasibilityofthemodelandthealgorithmisverifiedthroughthesimulationresultsofIEEE30system.

简介：Thewindenergygeneration,utilizationanditsgridpenetrationinelectricalgridareincreasingworld-wide.Thewindgeneratedpowerisalwaysfluctuatingduetoitstimevaryingnatureandcausingstabilityproblem.Thisweakinterconnectionofwindgeneratingsourceintheelectricalnetworkaffectsthepowerqualityandreliability.Thelocalizedenergystoragesshallcompensatethefluctuatingpowerandsupporttostrengthenthewindgeneratorinthepowersystem.Inthispaper,itisproposedtocontrolthevoltagesourceinverter(VSI)incurrentcontrolmodewithenergystorage,thatis,batteriesacrossthedcbus.Thegeneratedwindpowercanbeextractedundervaryingwindspeedandstoredinthebatteries.Thisenergystoragemaintainsthestiffvoltageacrossthedcbusofthevoltagesourceinverter.Theproposedschemeenhancesthestabilityandreliabilityofthepowersystemandmaintainsunitypowerfactor.Itcanalsobeoperatedinstand-alonemodeinthepowersystem.Thepowerexchangeacrossthewindgenerationandtheloadunderdynamicsituationisfeasiblewhilemaintainingthepowerqualitynormsatthecommonpointofcoupling.Itstrengthenstheweakgridinthepowersystem.Thiscontrolstrategyisevaluatedonthetestsystemunderdynamicconditionbyusingsimulation.Theresultsareverifiedbycomparingtheperformanceofcontrollers.

简介：Duringthelastdecade,spatio-temporaldatabaseshavebecomeincreasinglyimportantinmanyapplicationssuchasgeographicinformationsystems(GIS)andengineeringinformationsystems.Thispaperdiscussesthedesignandimplementationofageocomputingplatformforthedevelopmentoflocation-basedservices(LBS)focusingonmobilemapping.Duringtheanalysis,design,andimplementationofthegeocomputingplatform,aneffectivemethodisproposedforthereal-timeprocessingofgeographicinformationacquiredbyacameraattachedtoapersonaldigitalassistant(PDA).Thismethodcombineslocationinformationgivenbytheglobalpositionsystem(GPS)withman’sabilitytorecognizethelocationofobjectsandtheirgeographicalrelationshiptoimproveobjectmapping.

简介：Orthogonalfrequencydivisionmultiplexing(OFDM)waveformenablesradarandcommunicationfunctionssimultaneously,whichencounterslowangleresolutionandpoordataratefortraditionalsingleinputsingleoutput(SISO)systems.Tosolvetheseproblems,anintegratedradarandcommunicationsystem(IRCS)withmultipleinputmultipleoutput(MIMO)OFDMwaveformisproposed.Thedifferentlimitationsofradarandcommunicationindesigningsuchasystemareinvestigated.Then,anoptimizationproblemisdevisedtoobtainsuitablesystemparameters,includingthenumberofsubcarriers,subcarrierspacing,numberofsymbols,pulserepetitionfrequency(PRF)andlengthofcyclicprefix(CP).Finally,tosatisfytherequirementsofbothradarandcommunication,theIRCSparametersarederivedinthreetypicalcases.Severalnumericalresultsarepresentedtoillustratethedemandsofradarandcommunication,inconsistentorconsistent,fortheIRCSparametersandthesuperiorityoftheproposedsystem.

简介：Howtodealwiththecollaborationbetweentaskdecompositionandtaskschedulingisthekeyproblemoftheintegratedmanufacturingsystemforcomplexproducts.Withthedevelopmentofmanufacturingtechnology,wecanprobeanewwaytosolvethisproblem.Firstly,anewmethodfortaskgranularityquantitativeanalysisisputforward,whichcanpreciselyevaluatethetaskgranularityofcomplexproductcooperationworkflowintheintegratedmanufacturingsystem,ontheabovebasis;thismethodisusedtoguidethecoarse-grainedtaskdecompositionandrecombinethesubtaskswithlowcohesioncoefficient.Then,amulti-objectiveoptimieationmodelandanalgorithmaresetupfortheschedulingoptimizationoftaskscheduling.Finally,theapplicationfeasibilityofthemodelandalgorithmisultimatelyvalidatedthroughanapplicationcasestudy.

简介：新multilayered内部卫星高度高度平台(幸运)系统路由算法被建议，它主要基于multipath路由保证网络reliability.The建议multipath路由计划主要依靠切开在不同路径之间的交通使多重routes.Linear编程的利用是的最好成为为multipathselection.The使用的主要方法主要限制到服务(QoS)的质量(延期和连接利用)被考虑了到我

简介：Amethodbasedonthetheoryoftransfermatrixtodesigntheintegratedmicrolensforthecollimationofvertical-cavitysurfaceemittinglaser(VCSEL)arrayispresented.Theintegratedmicrolensesfabricatedonthesubstratedirectlyandonacertainpolymermaterialwhichisonthesubstrateareconsidered.Therelationshipsbetweentheradiusofcurvature,beamwaistandthedivergenceangleaftercollimationareobtainedwiththehelpofZEMAX.Theresultsshowthatthedeviceswiththedivergenceangleof15°(1/e2)andbeamwaistof2μmcanbeimprovedtothosewiththedivergenceanglelowerthan1°,andthedeviceswithbeamwaistof10μmcanbeimprovedtothosewiththedivergenceanglelowerthan3°,whichisagoodreferenceformanufacturinghigh-powerdeviceswithsmalldivergenceangle.Theconclusionsincludingincreasingthethicknessesofboththesubstrateandpolymermaterialandreducingthediameterofoxidizedlayeraredrawn,whichwillbeanimportantguidanceforexperimentresearch.

简介：Acompositedintegratedguidanceandcontrol(IGC)algorithmispresentedtotackletheproblemoftheIGCdesigninthedivephaseforthebank-to-turn(BTT)vehiclewiththeinaccuracyinformationoftheline-of-sight(LOS)rate.Forthesakeoftheoreticalderivation,anIGCmodelinthepitchplaneisestablished.Thehigh-orderfinite-timestateobserver(FTSO),withtheLOSangleasthesingleinput,isemployedtoreconstructthestatesofthesystemonline.Besides,acompositedIGCalgorithmispresentedviathefusionofback-steppinganddynamicinverse.ComparedwiththetraditionalIGCalgorithm,theproposedcompositedIGCmethodcanattenuateeffectivelythedesignconservationoftheflightcontrolsystem,whiletheLOSrateismixedwithnoise.Extensiveexperimentshavebeenperformedtodemonstratethattheproposedapproachisgloballyfinite-timestableandstronglyrobustagainstparameteruncertainty.

简介：ThearchitectureandprotocolsofInternetcan'tworkwellinspaceenvironments.Toformareliableandsafespacenetwork,characteristicsofspacecommunicationnetworkonediscusse,briefsynthesisisperformedforconsultativecommitteeforspacedatasystem(CCSDS)spacecommunicationsprotocolstandards(SCPS),andamodelaccountingfordatasecurityproblemofspace-earthintegratednetworkisprovided.

简介：Thisletterintroducesa4thorderactiveRCcomplexfilterwith1.5MHzcenterfrequencyand1MHzbandwidth.Thetotalharmonicdistortionofthefilterislessthan–60dBandtheimagerejectionratioisgreaterthan60dB.Anoveltechniqueisalsoproposedinthislettertoautomaticallyadjustthevariationofthetimeconstant.Theadvantagesoftheproposedmethodareitshighprecisionandsimplicity.Using5bitscontrolwords,thetuningerrorislessthan±1.6%.

简介：Toimprovethereliabilityandaccuracyoftheglobalpositioningsystem(GPS)/microelectromechanicalsystem(MEMS)inertialnavigationsystem(INS)integratednavigationsystem,thispaperproposestwodifferentmethods.Basedonwaveletthresholddenoisingandfunctionalcoefficientautoregressive(FAR)modeling,acombineddataprocessingmethodispresentedforMEMSinertialsensor,andGPSattitudeinformationisalsointroducedtoimprovetheestimationaccuracyofMEMSinertialsensorerrors.ThenthepositioningaccuracyduringGPSsignalshortoutageisenhanced.ToimprovethepositioningaccuracywhenaGPSsignalisblockedforlongtimeandsolvetheproblemofthetraditionaladaptiveneuro-fuzzyinferencesystem(ANFIS)methodwithpoordynamicadaptationandlargecalculationamount,aself-constructiveANFIS(SCANFIS)combinedwiththeextendedKalmanfilter(EKF)isproposedforMEMS-INSerrorsmodelingandpredicting.Experimentalroadtestresultsvalidatetheefficiencyoftheproposedmethods.

简介：修改multiwavelength活跃地锁模式的纤维戒指激光被建议并且试验性地示威了。在这种激光，放射激光的稳定的multiwavelengths被把串联取样的纤维布拉格栅栏(SFBG)集成到激光洞完成。实现活跃地锁模式的技术，一种双戒指洞配置被用来保证为放射激光的所有波长的洞长度是相同的。因此，同时的模式锁住所有波长被使用一样的锁模式的信号成功地完成了。

简介：AnewS-typeoferbium-ytterbiumco-dopedphosphateglasswaveguideamplifierintegratedwithcascadedmultilayermediumthinfilmfilterisproposed,thisS-typegeometrywaveguidestructureisusedtoachievealongpathinacompactchip,andobtainedhighergainwithlowerEr-dopedconcentration.Thecascadedmultilayermediumthinfilmfilterisutilizedtoachieveabroaderflatteninggainbandwidth.Theintrinsicalgainspectrumisobtainedbysolvingrateandpowerpropagationequations,theeffectoftransmittancespectrumofthinfilmfilteronflatteninggainisdiscussed.

简介：摘要信息技术飞速发展给规划行业带来了新的挑战，它所带来的管理模式的转变有可能颠覆相关企业原有的管理模式，借助信息化方法和手段为规划行业注入活力是必经之路，其成功的关键是企业不同成长阶段与信息化工具的有机结合。现在的软件厂商提供的信息化产品，不在于有多强大，而应结合客户的多样需求，以及随着客户的业务拓展、管理提升而不断出现的新需求，逐步建立符合企业发展、最适用、最便捷的信息交互模式。

简介：杭州高新区和中国科学院微电子研究所共建的中国科学院EDA中心杭州分中心、中国科学院微电子研究所杭州分部、杭州中科微电子有限公司，日前在杭州市高新技术开发区开业。中国科学院微电子研究所向国家集成电路设计杭州产业化基地赠送了“同心”DSPIP使用许可权，