简介：

简介：

简介：Inthispaper,anewoptimaldesigncriterion--jointmodelandcriterionoptimalde-signcriterioonisputforward.Thedesignthatissubjecttothiscriterionsatisfiesmanykindsoflin-earoptimalcriterionandD-optimalcriteriononseveralexperimentmodelsatthesametime.Theequivalentconditionofthisoptimaldesignisgiven.Itsiterativealgorithmandthealgorithmcover-geneearestated.

简介：Inthispaper,wediscusssomefundamentalpropertiesoftwoidealizedtypicalnetworks,namely,gridtypeandradial-circulartype.ThediscussionisbasedonSPCP(ShortestPathCountingProblem),whichreflectsthetrafficdensityofaroadsegment.Furthermore,wecomparetheireffectivenessbasedontheobtainedresultsoftheabovetworoadnetworks,andsuggestsomeproposalsonthedesignofcarlanesbyconsideringthedirectionofaroadsegmentinrelationtotheseroadnetworks.

简介：Manyproblemswithunderlyingvariationalstructureinvolveacouplingofvolumewithsurfaceeffects.Astraight-forwardapproachinafiniteelementdiscretiza-tionistomakeuseofthesurfacetriangulationthatisnaturallyinducedbythevolumetriangulation.Inanadaptivemethodonewantstofacilitate'matching'localmeshmodifications,i.e.,localrefinementand/orcoarsening,ofvolumeandsurfacemeshwithstandardtoolssuchthatthesurfacegridisalwaysinducedbythevolumegrid.WedescribetheconceptsbehindthisapproachforbisectionalrefinementanddescribenewtoolsincorporatedinthefiniteelementtoolboxALBERTA.Wealsopresentseveralimportantapplicationsofthemeshcoupling.

简介：

简介：

简介：

简介：ThispaperisbasicallyasurveytoshowanumberofcombinatorlaloptimizationproblemsarisingfromVLSIclrcultdesign.Someofthemincludingtheexistenceproblem,minimaxproblem,netrepresentation,bendminimization,areaminimization,placementproblem,routingproblem,etc,areespeciallydiscussedwithnewresultsandtheoreticalideasfortreatingthem.Finally,anumberofproblemsforfurtherresearcharementioned.

简介：

简介：

简介：

简介：

简介：InJulyof1987,theSamplingSurveyofChildren’sSituationwasconductedin9provincesautonomousregionsofChina.Astratifiedtwo--stageclustersamplingplanwasdesignedforthesurvey.Thepaperpresentsthemethodsofstratification,selectingn=2PSU’s(cities/counties)withunequalprobabilitieswithoutreplacementineachstratumandselectingresidents/villagecommitteeineachsampledcity/county.Allformulaeofestimatingpopulationcharacteristics(especiallypopulationtotalsandtheratiosoftwototals),andestimatingvariancesofthoseestimatorsaregiven.Finally,weanalysetheprecisionofthesurveypreliminarilyfromtheresultofdataprocessing.

简介：

简介：

简介：Wedevelopadatadrivenmethod(probabilitymodel)toconstructacompositeshapedescriptorbycombiningapairofscale-basedshapedescriptors.Theselectionofapairofscale-basedshapedescriptorsismodeledasthecomputationoftheunionoftwoevents,i.e.,retrievingsimilarshapesbyusingasinglescale-basedshapedescriptor.Thepairofscale-basedshapedescriptorswiththehighestprobabilityformsthecompositeshapedescriptor.Givenashapedatabase,thecompositeshapedescriptorsfortheshapesconstituteaplanarpointset.AVoR-Treeoftheplanarpointsetisthenusedasanindexingstructureforefficientqueryoperation.Experimentsandcomparisonsshowtheeffectivenessandefficiencyoftheproposedcompositeshapedescriptor.

简介：

简介：

简介：