简介:Itiswell-knownthatifpisahomogeneouspolynomialofdegreekinnvariables,p∈Pk,thentheordinaryderivativep(■)(r^2-n)hastheformAn,kY(x)r2-n-2kwhereAn,kisaconstantandwhereYisaharmonichomogeneouspolynomialofdegreek,Y∈Hk,actuallytheprojectionofpontoHk.Herewestudythedistributionalderivativep(■)(r2-n)andshowthattheordinarypartisstillamultipleofY,butthatthedeltapartisindependentofY,thatis,itdependsonlyonp-Y.Wealsoshowthattheexponent2-nisspecialinthesensethatthecorrespondingresultsforp(■)(rα)donotholdifα≠2-n.Furthermore,weestablishthatharmonicpolynomialsappearasmultiplesofr^2-n-2k-2k’whenp(■)isappliedtoharmonicmultipolesoftheformY’(x)r^2-n-2k’forsomeY∈Hk.
简介:Inthispaper,weproposeafacerecognitionapproach-StructedSparseRepresentation-basedclassificationwhenthemeasurementofthetestsampleislessthanthenumbertrainingsamplesofeachsubject.Whenthisconditionisnotsatisfied,weexploitNearestSubspaceapproachtoclassifythetestsample.Inordertoadaptallthecases,wecombinethetwoapproachestoanadaptiveclassificationmethod-Adaptiveapproach.TheadaptiveapproachyieldsgreaterrecognitionaccuracythantheSRCapproachandCRC_RLSapproachwithlowsamplerateontheExtendYaleBdataset.Anditismoreefficientthanothertwoapproaches.
简介:Inthispaper,westudyquantumteleportationofatomicstatesviaahybridentangledstate(HES)involvinganatomandacavityfield.Andweinvestigatehowtoimplementcontrolledphase(CP)gatesbetweenatomicinternalstatesandcoherentstatesofcavityfield.Wealsodiscussthemethodsofdistinguishingcoherentstates|±α>inacavity.Finally,abriefdiscussionaboutthefeasibilityofthisschemeinexperimentispresented.
简介:那结果的消除是解决multivariate多项式方程的一个有效方法,是众所周知的。在这份报纸,而不是由可变消除经由变量计算目标resultants,作者联合multivariate含蓄的方程插值和multivariate计算减少的resultants的结果的消除,在哪个multivariate的技术含蓄的方程插值被一些高概率算法在multivariate多项式插值和univariate上完成合理函数插值。作为结果的消除的应用,作者在三个著名未解决的组合几何优化问题上说明建议算法。实验证明结果的消除的建议途径比某存在更有效这些困难的问题上的结果的消除方法。
简介:由使用Ringel大厅代数学途径,我们调查谎言代数学L的结构(不能分解的constructible产生的螞)为任何东西在模块的变化设定有限维?代数学螞。我们获得通用包围代数学R的一条几何认识(L的螞)(螞),这概括Riedtmann的主要结果。我们也为任何东西在一种几何形式获得格林鈥檚公式有限维?代数学螞和使用它在R给comultiplication公式(螞)。关键词Ringel大厅代数学-constructible集合-变化-通用包围代数学先生(2000)题目分类14M99-16G20-中国(资助号码10631010)的NSF并且由NKBRPC(资助号码2006CB805905)支持的17B35在他的第80生日的场合上奉献了给J·A·格林教授
简介:Inthispaper,wegivesomecreativecharacterizationsofCampanatospacesviatheboundednessofcommutatorsassociatedwiththeCalder′on-Zygmundsingularintegraloperator,fractionalintegralsandHardytypeoperators.Furthermore,weputforwardafewproblemsonthecharacterizationsofCampanatotypespacesviatheboundednessofcommutators.
简介:Manyalgorithmshavebeenimplementedfortheproblemofdocumentcategorization.ThemajorityworkinthisareawasachievedforEnglishtext,whileaveryfewapproacheshavebeenintroducedfortheArabictext.ThenatureofArabictextisdifferentfromthatoftheEnglishtextandthepreprocessingoftheArabictextismorechallenging.ThisisduetoArabiclanguageisahighlyinflectionalandderivationallanguagethatmakesdocumentminingahardandcomplextask.Inthispaper,wepresentanAutomaticArabicdocumentsclassificationsystembasedonkNNalgorithm.Also,wedevelopanapproachtosolvekeywordsextractionandreductionproblemsbyusingDocumentFrequency(DF)thresholdmethod.TheresultsindicatethattheabilityofthekNNtodealwithArabictextoutperformstheotherexistingsystems.Theproposedsystemreached0.95micro-recallscoreswith850Arabictextsin6differentcategories.
简介:什麽是Lii?为何中国没有Lii?当1992年美国康奈尔大学法学院成立以自由取用法律信息为宗旨的在线法律数据库Lii—LegalInformationInstitute时,同一时期中国则是由北京大学法学院成立中国法律信息网后来演进为北大法宝在线法律数据库。到底是什么原因导致中国没有Lii而朝向另一个方向发展?以及Lii真的好吗,还是只是一种华而不实的口号?本文拟邀请欧洲大学研究院法律信息与法学理论教授GiovanniSartor、欧洲大学研究院马克斯韦伯学者GiuseppeContissa、意大利ittig-CNR法律信息理论与技术研究所研究员EnricoFrancesconi与GinevraPerugenlli从"LawviaTheInternet"的概念切入讨论法律信息自由取用运动以及Lii在世界各地的发展状况。
简介:It’swell-knownthatchange-pointproblemisanimportantpartofmodelstatisticalanalysis.Mostoftheexistingmethodsarenotrobusttocriteriaoftheevaluationofchange-pointproblem.Inthisarticle,weconsider'mean-shift'probleminchange-pointstudies.Aquantiletestofsinglequantileisproposedbasedonsaddlepointapproximationmethod.Inordertoutilizetheinformationatdifferentquantileofthesequence,wefurtherconstructa'compositequantiletest'tocalculatetheprobabilityofeverylocationofthesequencetobeachange-point.Thelocationofchange-pointcanbepinpointedratherthanestimatedwithinainterval.Theproposedtestsmakenoassumptionsaboutthefunctionalformsofthesequencedistributionandworksensitivelyonbothlargeandsmallsizesamples,thecaseofchange-pointinthetails,andmultiplechange-pointssituation.Thegoodperformancesofthetestsareconfirmedbysimulationsandrealdataanalysis.Thesaddlepointapproximationbaseddistributionoftheteststatisticthatisdevelopedinthepaperisofindependentinterestandappealing.Thisfindingmaybeofindependentinteresttothereadersinthisresearcharea.
简介:瞄准:决定是否输精管切除术离开epididymal尾巴(经由腹股沟的运河)能在精子发生上在兔子减少早手术后的效果。方法:29只正常雄的日本白兔子(46个月)受到单方结束结束(常规)或无限制(juxta-epididymal管的切割结束推迟ens没绑扎)经由腹股沟的运河的输精管切除术。在操作,睾丸,epididymides和管以后的十天和3个月一个defer统一体被移开并且methacrylate准备的嵌入树脂的节。睾丸,epididymis和管的组织学推迟ens在轻显微镜下面被检验,并且生精的小管的体积和直径是用立体声学习的份量上逻辑方法。结果:任何一个输精管切除术的方法都没与相反地侧面的假冒操作方面,而是juxta-epididymal管比较在vasectomized方面上导致明显的损坏到精子发生推迟vasectomized方面上的ens高度被扩张并且包含了众多的精子在操作以后的3个月。结论:离开尾epididymis的输精管切除术没在兔子在精子发生上有重要早手术后的效果。