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简介：七点四十五分，我们都在站台上．我们这群学童——火车又晚点了。我们才不介意呢!晚点又有什么关系呢?我们可以将名字划在积满尘灰的墙上。

简介：Wepresentanapproachforgeneratingasortoffractalgraphsbyasimpleprobabilisticlogicneuronnetworkandshowthatthegraphscanberepresentedbyasetofcompressedcodings.Analgorithmforquicklyfindingthecodings,i.e.,recognizingthecorrespondinggraphs,isgiven.Thecodingsareshowntobeoptimal.Theresultsabovepossiblygiveustheclueforstudyingimagecompressionandpatternrecognition.

简介：Superpixelsegmentationistheoversegmentationofanimageintoasetofhomogeneousregions.Superpixelhasmanyspecificpropertiesandhasbeencommonlyusedassupportingregionsforprimitivestoreducecomputationsinvariouscomputervisiontasks.Onepropertyofsuperpixelsiscompactness,whichispreferredinsomeapplications.Inthispaper,wegiveanreviewonimagesuperpixelsegmentationalgorithmsproposedinrecentyears.Superpixelsegmentationapproachesareclassifiedbasedonthecompactnessconstraintandtheirmainideaareintroduced.Wealsocomparethesealgorithmsinvisualandevaluatethemwithfivecommonmeasurements.

简介：Itisnaturalforyoungpeopletobecriticaloftheirparentsattimesandtoblamethemformostofmisunderstandingsbetweenthem.Theyhavealwayscomplained,moreorlessjustly,thattheirparentsareoutoftouchwithmodemways;thattheyarepossessiveanddominant;thattheydonottrusttheirchildrentodealwithcrisis;

简介：AsreadersofCancerBiologyandMedicinewellknow,therehasbeenaseismicshiftinhumanmolecularbiologyoverthepastfewyears,asmomentousinitsownwayasthediscoveryofthedouble-helicalstructureofDNAbyWatsonandCrick60yearsago,theelucidationofthegeneticcodeshortlythereafter,theadventofrecombinantDNAandgenecloning

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简介：Inthispaper,weinvestigatetheroleofmorphingonflightdynamicsoftwobirdsbysimulatingtheflowoverrigidandmorphingwingsthathavethecharacteristicsoftwodifferentbirds,namelytheGiantPetrelandDovePrion.Thesimulationofaflappingrigidwingshowsthattherootofthewingshouldbeplacedataspecificangleofattackinordertogenerateenoughlifttobalancetheweightofthebird.However,inthiscasethegeneratedthrustiseitherverysmall,orevennegative,dependingonthewingshape.Further,resultsshowthatmorphingofthewingenablesasignificantincreaseinthethrustandpropulsiveefficiency.Thisindicatesthatthebirdsactuallyutilizesomesortofactivewingtwistingandbendingtoproduceenoughthrust.Thisstudyshouldfacilitatebetterguidanceforthedesignofflappingairvehicles.

简介：在过去几年里，联网放技术的RTK，特别VRStechnology，广泛地在全世界在中国的一些部分并且在许多国家被使用了。VRS技术的Theprinciple与相应公式推理被讨论，并且详细说明了对修正和虚拟观察产生算法被给的VRS的描述和应用。放的GPS虚拟参考车站(VRS)基于多重参考车站是一种网络RTK技术。至少三个参考车站与这种技术，和参考车站的测地学的坐标被需要精确被知道。这些引用车站连续地追踪GPS卫星的信号以便决定散andnon散的偏爱。那些偏爱能被插入内推到虚拟参考车站，因此ther在上能在VRS附近利用那个信息得到更好的放精确性。同时，漫游者不得不把他们的近似坐标送到处理中心的一个数据(通常主人参考车站)以便虚拟观察能根据漫游者的近似坐标和散、非散的偏爱的修正在近似坐标被产生。事实上，VRS完全在近似坐标被建立。通常，近似坐标从其精确性能在米被控制的放的假范围单身者被获得或十米。因为很突然，在VRS和漫游者之间的基线正在意味着在漫游者和VRS之间的一些基于距离的偏爱的高连贯，更好的结果能从traditionaldouble微分的位置方法被导出。

简介：［1］BorgeforsG.Distancetransformationsinarbitrarydimensions.Computer,Vision,GraphicsandImageProcessing,1984(27):321～345［2］LarkinJ.AnANSICprogramtodetermineinexpectedlineartimetheverticesoftheConvexHullofasetofplanarpoints.Computers&Geosciences,1991,17(3):431～443［3］SidesE,HackR.SeminarReport:three-dimensionalGIS:futuredevelopments.ITCJournal,1995(2):151～164［4］FritschD.Three-dimensionalgeographicalinformationsystemsstatusandprospects.In:InternationalArchivesofPhotogrammetryandRemoteSensing,Vienna,1996,(B3):215～278［5］GongJY,XiaZG.Anintegrateddatamodelinthree-di-mensionalGIS.In:ProceedingsofGeoinformatics'96WuhanInternationalSymposium.1996.107～120［6］ManacedonioG,PareschiMT.Analgorithmforthetriangulationofarbitrarilydistributedpoints:applicationstovolumeestimateandterrainfitting.Computer&Geosciences,1991,17(7):859～874［7］MolenaarM.Atopologyfor3Dvectormaps.ITCJournal,1992(1):25～33［8］PiloukM,etal.ATetrahedron-based3DvectordatamodelforgeoinformationIn:AdvancedGeographicDataModeling.NetherlandsGeodeticCommission,PublicationsonGeodesy,1994.129～140［9］LiQQ,LiDR.Datastructuresinthreedimensionalgeographicinformationsystem.JournalofWuhanTechnicalUniversityofSurveyingandMapping,1996,21(2):128～133(inChinese)［10］LiQQ,LiDR.HybriddatastructurebasedonOctreeandTetrahedronin3-DGIS.In:InternationalArchivesofPhotogrammetryandRemoteSensing,Vienna,1996,31(B4):503～507［11］LiQQ,LiDR.Studyondatastructurein3-DGIS.In:ProceedingsofGeoinformatics'96WuhanInternationalSymposium,1997.229～237

简介：Thisletterpresentsak-partyRSAkeysharingschemeandtherelatedalgorithmsarepresented.ItisshownthatthesharedkeycanbegeneratedinsuchacollaborativewaythattheRSAmodulusispubliclyknownbutnoneofthepartiesisabletodecrypttheencipheredmessageindividually.

简介：Greysequencegenerationcandrawoutanddevelopimpliedrulesoftheoriginaldata.Differentkindsofgenerationmethodsweresummarizedandclassifiedintotwotypes:partialgenerationandwholegeneration.Theaveragegenerationandstepwiseratiogenerationisdisussed,thepreferencegenerationisregardasaspecialcaseofproportionaldivisionbasedonanalysisgeometrictheory,proposeanideaofusingconcaveandconvexstatusofdiscretedatatodeterminethegenerationcoefficient.Basedonthestepwiseandsmoothratiogeneration,atendencyaveragegenerationisproposedandhaveacomparisonusingthedataprovidedinpaperslistedinthereferences.Thecomparisonprovesthatthenewgenerationisbetterthantheothertwogenerationsanderrorsareobviouslyreduced.

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简介：SinceOctober2008,China'ssocialconsumptionofelectricityhad,forthefirsttime,grownnegativelycomparedtothesameperiodofthepreviousyear,andinNovemberthenegativegrowthrangefurtherexpanded.Themajorpressurefacedbytheelectricityindustryhasnowturnedfromthecontradictionbetweencoalandelectricitytoelectricityquantity.Thisisundoubtedlyatrueandnewtesttoelectricityenterpriseswhichgetusedtohighgrowthbutarenowsufferinggreatlosses.Thereformofelectricit...

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简介：Collaborativeenvironmentssupportingpointtopointandmultipointvideoconferencing,documentandapplicationsharingacrossbothlocalandwideareanetworks,videoondemand(Broadcastandplayback)andinteractivetextfacilitieswillbeacrucialelementforthedevelopmentofthenextgenerationofHEPexperimentsbygeographicallydispersedcollaborations.The"VirtualRoomVideoconferencingSystem"(VRVS)hasbeendevelopedsince1995,inordertoprovidealowcost,bandwidth-efficient,extensiblemeansforvideoconferencingandremotecollaborationovernetworkswithinthehighEnergyandNuclearPhysicscommunities.TheVRVS(VirtualRoomsVideoconferencingSystem)providesworldwidevideoconferencingserviceandcollaborativeenvironmenttotheresearchandeducationcommunities,VRVSusestheInternet2andESnethigh-performancenetworksinfrastructuretodeployitsWeb-basedsystem,whichnowincludesmorethan5790registeredhostsrunningVRVSsoftwareinmorethan50differentcountries,VRVShostsanaverageof100-multipointvideconferenceandcollaborativesessionsworldwideeverymonth.Therearearound35reflectorsthatmanagethetrafficflow.atHENPlabsanduniversitiesintheUSandEurope,Sofar,thereare7VirtualRoomsforWorldWideConferences(involvingmorethanonecontient),and4VirtualRoomseachforintra-continentalconferencesintheUS,EuropeandAsia,VRVScontinuestoexpandandimplementnewdigitalvideotechnologies,includingH.323ITUstandardintegration,MPEG-2videoconferencingintegration,sharedenvironments,andQualityofService.

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简介：SinceOctober2008,China'ssocialconsumptionofelectricityhad,forthefirsttime,grownnegativelycomparedtothesameperiodofthepreviousyear,andinNovemberthenegativegrowthrangefurtherexpanded.Themajorpressurefacedbytheelectricityindustryhasnowturnedfromthecontradictionbetweencoalandelectricitytoelectricityquantity.Thisisundoubtedlyatrueandnewtesttoelectricityenterpriseswhichgetusedtohighgrowthbutarenowsufferinggreatlosses.Thereformofelectricit...