简介：<正>InthispaperitisprovedthatsumfromN=N+1toN+Hx（n）ψ（n）（?）εH1-（1/r）q(（1/4（r-）1）+ε,wherer=4,qisaprimepower,χandψaremultiplicativeandadditivecharactersmoduloqrespectively,withχnontrivial.

简介：Thedatausedintheprocessofknowledgediscoveryoftenincludesnoiseandincompleteinformation.Theboundariesofdifferentclassesofthesedataareblurandunobvious.Whenthesedataareclusteredorclassified,weoftengetthecoveringsinsteadofthepartitions,anditusuallymakesourinformationsysteminsecure.Inthispaper,optimalpartitioningofincompletedataisresearched.Firstly,therelationshipofsetcoverandsetpartitionisdiscussed,andthedistancebetweensetcoverandsetpartitionisdefined.Secondly,theoptimalpartitioningofgivencoverisresearchedbythecombingandpartingmethod,acquiringtheoptimalpartitionfromthreedifferentpartitionssetfamilyisdiscussed.Finally,thecorrespondingoptimalalgorithmisgiven.Therealwirelesssignalsofftencontainalotofnoise,andtherearemanyerrorsinboundarieswhenthesedataisclusteredbasedonthetradionalmethod.Inourexperimant,theproposedmethodimprovescorrectrategreatly,andtheexperimentalresultsdemonstratethemethod’svalidity.

简介：非完整哀减信息下的劣化结构时变可靠度评估研宄衰减函数的概率分布对结构可靠度的影响；在非完整衰减信息下，对结构的时变可靠度进行评估。1．假定衰减函数服从5种常见的概卒分靠，讨论可靠度分析结果的差异；2．当衰减函数的概率分布（或各概率分布的杖重）未知时，提出平均可靠度的分析方法。假定承载力是允伞相关的随机过程，扯其概率分伟未知的情况下：（1）假定5种常见的概率分布，对结构可靠度进行分析和比较；（2）将时变可靠发的计算公式Taylor展开，转化为关于衰减函数一阶矩和二阶矩的函数，推导平均可靠度的计算方法（公式18）。1．不同的衰减函数概率分布对结构可靠度的影响显学；2．利用本文提出的方法，在衰减函数概率的分伟（或各概率分布的杖重）未知时，可以得出结构可靠度的合理评估。

简介：AniterativemethodofDeJong,GreigandMadan(1985)forobtainingmaximumlikelihoodestimatesforcontingencytablesderivedfromaMover-Stayermodelisconsidered.Itisshownthatthismethodworksforothersamplingschemesleadingtoincompletecontingencytables.Moreover,compar-isonsindicatethatthemethodisveryfast.

简介：0.IntroductionandSummaryThecelebratedpapersof[2]and[3],pavedthewayforpricingoptionsonstocks,onthebasisofthefollowingprinciple:inacompletemarket(suchastheoneinSection1.5),everycontingentclaimcanbeattainedexactlybyinvestinginthemarketandstartingwithala...

简介：LetAbeann×nsymmetricpositivedefinitematrix,xbeann×1unknownvectorandb,ann×1givenvector.ConsiderlinearalgebricequationssystemAx=b.（1）MakeanincompleteCholeskyfactorizationofAA=LLT+R（2）whereLisalowertriangularmatrix.UseLwegetapreconditionedequationBy=dwhereB=L-1AL-T,y=LTxandd=L-1b.

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简介：到摘录和快车，在信息系统，discernibility矩阵和它的扩展隐藏的知识在许多真实生活应用程序成功地被介绍给并且适用。作为一条代表性的途径，二进制discernibility矩阵有许多有趣的优异性质并且很快被开发了发现直觉、容易理解知识。目前，然而，二进制discernibility矩阵主要在完全的信息系统被采用。怎么由在不完全的信息系统使用二进制discernibility矩阵完成属性减小是一个挑战性的话题。概括二进制discernibility矩阵的一种形式进一步为处理不完全的信息系统的很多个代表性的扩大不平的集合模型被开发。一些有用性质和标准为判定属性核心和属性亲戚减小被介绍。此后，一个新算法被提出它支持基于概括二进制discernibility矩阵归因核心和属性亲戚减小。这个算法对一致信息系统而且不一致的信息系统合适不仅。建议方法的可行性被工作例子和试验性的分析表明。

简介：ThispapergivesthetruncatedversionoftheMinpertmethod:theincompleteminimumperturbationalgorithm(IMinpert).Itisbasedonanincompleteorthogonal-izationoftheKrylovvectorsinquestion,andgivesaquasi-minimumbackwarderrorsolutionovertheKrylovsubspace.InordertomakethepracticalimplementationofIMinperteasyandconvenient,wegiveanotherapproximateversionoftheIMinpertmethod:A-IMinpert.Theoreticalpropertiesofthelatteralgorithmarediscussed.Nu-mericalexperimentsarereportedtoshowtheproposedmethodiseffectiveinpracticeandiscompetitivewiththeMinpertalgorithm.

简介：AnewandintelligentdesignmethodforPIDcontrollerwithincompletederivationisproposedbasedontheantsystemalgorithm(ASA).ForagivencontrolsystemwiththiskindofPIDcontroller,agroupofoptimalPIDcontrollerparametersK*p,T*i,andT*dcanbeobtainedbytakingtheovershoot,settlingtime,andsteady-stateerrorofthesystem'sunitstepresponseastheperformanceindexesandbyuseofourimprovedantsystemalgorithm.K*p,T*i,andT*dcanbeusedinreal-timecontrol.ThiskindofcontrolleriscalledtheASA-PIDcontrollerwithincompletederivation.ToverifytheperformanceoftheASA-PIDcontroller,threedifferenttypicaltransferfunctionsweretested,andthreeexistingtypicaltuningmethodsofPIDcontrollerparameters,includingtheZiegler-Nicholsmethod(ZN),thegeneticalgorithm(GA),andthesimulatedannealing(SA),wereadoptedforcomparison.ThesimulationresultsshowedthattheASA-PIDcontrollercanbeusedtocontroldifferentobjectsandhasbetterperformancecomparedwiththeZN-PIDandGA-PIDcontrollers,andcomparableperformancecomparedwiththeSA-PIDcontroller.

简介：Inthispaperweaddressinformationmeasuresofroughnessofknowledgeandroughsetsforincompleteinformationsystems.Thedefinitionofroughentropyofknowledgeanditsimportantpropertiesaregiven.Inparticular,therelationshipbetweenroughentropyofknowledgeandtheHartleymeasureofuncertaintyisestablished.Weshowthatroughentropyofknowledgedecreasesmonotonouslyasgranularityofinformationbecomesmaller.Thisgivesaninformationinterpretationforroughnessofknowledge.Basedonroughentropyofknowledgeandroughnessofroughset.adefinitionofroughentropyofroughsetisproposed,andweshowthatroughentropyofroughsetdecreasesmonotonouslyasgranularityofinformationbecomesmaller.Thisgivesmoreaccuratemeasureforroughnessofroughset.

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简介：这篇文章在生长曲线模型题目为回归系数考虑线性评估者的考虑到不完全的椭圆体的限制。为分别地，在同类、非同类的线性评估者的班上可被考虑的线性评估者的必要、足够的条件在二次的损失功能下面被获得。他们是在文学的一些存在结果的归纳。

简介：BackgroundTheimpactofincompleterevascularization(IR)onadverseoutcomesafterpercutaneouscoronaryinterventionremainsinconclusive,andfewstudieshaveexaminedmortalityduringfollow-upslongerthan5years.TheobjectiveofthisstudyistotestthehypothesisthatIRisassociatedwithhigherriskoflong-term(8-year)mortalityafterstentingformultivesselcoronarydisease.MethodsandResultsAtotalof13016patientswithmultivesseldiseasewhohadundergonestentingpro-cedureswithbaremetalstentsin1999to2000wereidentifiedintheNewYorkState'sPercutaneousCoronaryInterventionReportingSystem.Alogisticregressionmodelwasfittopredicttheprobabilityofachievingcompleterevascularization(CR)inthesepatientsusingbaselineriskfactors;then,theCRpatientswerematchedtotheIRpatientswithsimilarlikelihoodsofachievingCR.Eachpatient'svitalstatuswasfollowedthrough2007usingtheNationalDeathIndex,andthedifferenceinlong-termmortalitybetweenIRandCRwascompared.ItwasfoundthatCRwasachievedin29.2%(3803)ofthepatients.Forthe3803pair-matchedpatients,therespective8-yearsurvivalrateswere80.8%and78.5%forCRandIR(P=0.04),respectively.TheriskofdeathwasmarginallysignificantlyhigherforIR(hazardratio=1.12;95%confidenceinterval,1.01-1.26,P=0.04).The95%bootstrapconfidenceintervalforthehazardratiowas0.98to1.32.ConclusionsIRmaybeassociatedwithhigherriskoflong-termmortalityafterstentingwithBMSinpatientswithmultivesseldisease.Moreprospectivestudiesareneededtofurthertestthisassociation.

简介：Inthispaper,wehavediscussedarandomcensoringtestwithincompleteinformation,andprovedthatthemaximumlikelihoodestimator(MLE)oftheparameterbasedontherandomlycensoreddatawithincompleteinformationinthecaseoftheexponentialdistributionhasthestrongconsistency.

简介：DearEditor,Vogt-Koyanagi-Harada(VKH)diseaseisacell-mediatedautoimmunesyndromedirectedagainstmelanocytes.Itisconsideredamultisystemdisordercharacterizedbygranulomatouspanuveitisoftenassociatedwithneurologicandcutaneousmanifestations.Thechoroidisthemainsiteof

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简介：Thenecessaryandsufficientconditionsfortheexistenceofsimpleincompleteblockdesign(v,w;4,2)-IPBDsaredetermined.Asaconsequence,thenecessaryandsufficientconditionsfortheembeddingsofsimpletwo-foldbalancedincompleteblockdesignswithblocksize4arealsodetermined.