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简介：在这篇论文，多分辨率批评点的过滤器(CPF)被采用想象为框架率起来变换(FRUC)匹配。由CPF匹配，稠密的运动地能为精确地代表目标运动被获得。然而，有弹性的运动模型不控制吸藏的区域，因此在插入内推的框架导致污迹人工制品。处理这个问题，我们建议用吸藏的一个新FRUC计划精制了匹配插值(ORCMI)的CPF。在建议途径，吸藏精炼基于印射的双向CPF。并且中间的框架被双向插值为象素为吸藏象素与单向性的设计相结合的非吸藏产生。试验性的结果证明ORCMI改进插入内推的框架的视觉质量，特别在吸藏区域。比作匹配基于的FRUC算法的块，ORCMI能完成dBPSNR为标准录像序列获得的1∼2。

简介：TheMinistryofScienceandTechnologyannouncedtheinitialresultsof2015NationalScienceandTechnologyPrize,recently."Establishmentofreal-timemonitoringsystemanditsapplicationsinwidefieldsbasedonrareearthnanoup-conversionluminescencetechnology"recommendedbytheChineseMedicalAssociationwaslistedamongthesecondprize.TheprojectwasconductedbytheAcademyofMilitary

简介：Numericallyanalyzedisthetransmissionperformanceoftheopticalmillimeter(mm)-wavegeneratedbyfrequencyup-conversionviaaphasemodulatoralongthedispersivefiber.60GHzmm-wavesub-carrier(SC)signalscanbeobtainedafterfibertransmission,simultaneously,thephase-modulatedsignalscanbeconvertedtotheintensity-modulatedones.Thenumericalresultsshowthattheopticalmm-waveatfadingloopshasbetterperformance,andtheeyediagramstillkeepsopenwhenopticalmm-wavesignalistransmittedover98km.

简介：Aweakinfrared(IR)imageamplifierwithmorethan60-dBopticalgainandfrequencyup-conversionisdevelopedfromapicosecond(PS)355-nmpumpedgatedopticalparametricamplifier(OPA)inaβ-BaB2O4(BBO)crystal.TheIRimageat1064nmisamplifiedandup-convertedintothevisibleregionat532nmbyparametricamplificationandup-conversion.Withtheoptimizedopticalgain,thelowestdetectableenergyoftheimagecanbeaslowas1.8femto-Jouleperpulse,whichisthreeordersofmagnitudelowerthanthedetectionlimitofacharge-coupleddevice(CCD)camera.ThetransversalresolutionoftheOPAimagingisinvestigated,andtheapproachesforhigherdetectionsensitivityandhighertransversalresolutionareproposed.

简介：CaF2:Ho3+/Yb3+nano-particleswithintensegreenup-conversion(UC)luminescencearesuccessfullysynthesizedviaafacilehydrothermalapproachbyusingNH4FasthefluoridesourceandNa2EDTAasachelatingreagent.PowderXraydiffraction(XRD),transmissionelectronmicroscopy(TEM),fieldemissionscanningelectronmicroscopy(FE-SEM),andUCemissionspectraareusedtocharacterizethestructures,shapes,andluminescentpropertiesofthesamples.TheeffectsfromfluoridesourcesandchelatingreagentsontheformationsofCaF2nano-particlesareinvestigated,andtheformationprocessisalsodeduced.Undertheexcitationofa980-nmlaserdiode,thesampleseachshowagreenup-conversionemissioncenteredat540nmcorrespondingtothe5S2/5F4→5I8transitionsofHo3+.Moreover,theUCmechanismsofHo3+/Yb3+co-dopedCaF2nano-particlesarealsodiscussed.

简介：Tuningthecoloroutputofrare-earthiondopedluminescentnanomaterialshasimportantscientificsignificanceforfurtherextendingapplicationsincolordisplays,lasersources,optoelectronicdevices,andbiolabeling.Inpreviousstudies,pre-designedphasemodulationofthefemtosecondlaserfieldhasbeenproventobeeffectiveintuningtheluminescenceofdopedrare-earthions.Owingtothecomplexlight–matterinteractionintheactualexperiment,thedynamicrangeandoptimalefficiencyforcolortuningcannotbedeterminedwiththepre-designedphasemodulation.Thisarticlesharesthedevelopmentofanadaptivefemtosecondpulseshapingmethodbasedonageneticalgorithm,anditsusetomanipulatethegreenandredluminescencetuninginanEr3+-dopedglassceramicunder800-nmfemtosecondlaserfieldexcitationforthefirsttime.ExperimentalresultsshowthattheintensityratioofthegreenandredUCluminescenceofthedopedEr3+ionscanbeeitherincreasedordecreasedconvenientlybythephase-shapedfemtosecondlaserfieldwithanoptimalfeedbackcontrol.Thephysicalcontrolmechanismsforthecolortuningarealsoexplainedindetail.Thisarticledemonstratesthepotentialapplicationsoftheadaptivefemtosecondpulseshapingtechniqueincontrollingthecoloroutputofdopedrare-earthions.

简介：当英国人说某事物的状况，例如生活、健康、事业、经济等的状况，是ontheupandUp”时，也就是说它越来越好，步步向上。

简介： <正> WesetoffafterlunchonaFridayinthemiddleofJulythisyear.We,that’sthreepilots,oneguest,myHRmanager,andHuDaling,arepresentativeoftheStatePhysicalCultureAdministration.WehadalatelunchattheCapitalClubinBeijing,afterwhichwesetoutonourjourneytoDatong.Wewereinhighspirits,travellinginaBuickvan,allofustogether.AnoldChinesefriendofours,George,whousedtobeadriver

简介：There'sanewbunchofsightseersintown-andthey'rereadytospend.TOURISTtrafficatChina'sbustlingairportsisbecomingincreasinglytwo-way.Theusualgroupsofbespectacledpensionersandred-eyedbackpackersthrongtheinboundterminals,catapultingChinainto5thplaceintheinternationalleagueofmostpopulardestinations.Crowdingthedeparturelounges,meanwhile,aregrowinglegionsofupwardlymobileChineseholidaymakers,headedforRome'sColiseum,SydneyHarbor,oreventheSafarisofKenya.

简介： <正> AsNewYear’sDaydrawsnear,manytourismdestinationsareforcusingonChinesetravellerswhoareplanningtogoontriplduringthecomingyear.

简介：UP,fromDisney.PixarMovies,acomedy（喜剧）adventure（奇遇；冒险）abouta78-year-oldballoonsalesman,CarlFredricksen.WhenhetiesthousandsofballoonstohishouseandfliesawaytothewildsofSouthAmerica,

简介：Carf（卡尔）和艾丽（Ellie）是两个志同道合的好朋友，两人自小热爱冒险，他俩共同的梦想就是去“天堂瀑布（ParadiseFalls）”游玩。Carl曾答应Ellie将来会带她去那里。就这样，两个怀着这个梦想从相识到结婚，

简介：Backconversionisanintrinsicphenomenoninnonlinearfrequencydown-conversionprocesses.However,thephysicalreasonforitsoccurrenceisnotwellunderstood.Here,wetheoreticallyrevealthatbackconversionistheresultofaπ-phasejumpassociatedwiththedepletionofoneinteractingwave.Bysuppressingtheidlerphasejumpthroughadeliberatecrystalabsorption,thebackconversioncanbeinhabited,thusenhancingtheconversionefficiencyfromthepumptothesignal.TheresultspresentedinthisLetterwillfurthertheunderstandingofnonlinearparametricprocessesandpavethewaytowardthedesignofhighlyefficientdown-conversionsystems.

简介：1．feedup意为“给……吃食物；养肥；使吃饱”。例如：Ihavetoworkovertimeonweekendtofeedupmyfamily.我周末要努力加班，养家糊口。

简介：１、词汇缺项及弥补方式词汇缺项（ｌｅｘｉｃａｌ　ｇａｐ）是人类语言中普遍存在的一个问题。一般而言，特指的名词在数量上远远超过特指的动词。例如，英语中原本不存在表示诸如“为……理发剃须”、“在……上洒（或浇）水”等具体行为的特指动词。为了达意，人们只得采取迂回的方式，通过“ｃｕｔｔｈｅｈａｉｒａｎｄ（ｓｈａｖｅ）ｔｈｅｂｅａｒｄ　ｆｏｒ…”，“ｐｏｕｒｗａｔｅｒ　ｏｖｅｒ…”等等这一类旧词搭配而成的结构来解决上述所举的特指词汇缺项问题。追求经济、简洁是人类普遍存在的一大心理趋向，而英语中Ｎ→Ｖ　Ｃｏｎｖｅｒｓｉｏｎ（名词转化为动词）便是人类这—心理特征在语言上的反映。“转化”这一简

简介：教参书将“(Tinasaid)I'mgoingtoseewhatDadisupto．”译成“我想看看爸爸在忙什么”。此句中的upto(up为副词，to为介词)在现代英语中常作如下用途：

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简介：请家长帮忙制作背景，使Alfi能在山上自由上下。1在鞋盒里画出高山的场景图。2用铅笔穿透盒子顶部，把线轴套在铅笔上。