灾变星

通过灾变研究，我们可以获得一些信息，如相互作用的双星可以包涵一个白矮星从一个轨道伴星吸积，在所有波段观测，都可以看到其经受一次激动人心的再造。灾变过程允许直接和仔细地研究平衡和不平衡吸积盘。反过来这也帮助我们了解X射线双星、黑洞和活动星系核。本书是第一次报导灾变星全面研究的专著，结合理论和观测，也是一本单纯的综合课本。     

Insect population differentiation in response to enviromental thermal stress

Innature,somespeciesoccupyarestrictedgeo graphicrangewhilesomeothershaveawideorevencosmopolitandistribution .Somespeciesonlyemergeinmildseasonswhilesomeothershavedominatingpopulationsoverseasons .Thus,thepopulationdy namicsofspeciesvariesindifferenttemporalandspa tialniches,reflectingdifferentrequirementsforther malbudgetandhabitattraits[1— 3].Generally ,species’abilitytosurvivethermalstress ,togetherwithotherfactors,hasdetermineditsrangeandpo tentialregionaldistribution[4 ].Inthepastdecades…     

Study on Optimality of Two-Stage Estimation with ARMA Model Random Bias

1.INTaoDUCTIONInrecentyearsconsiderableworkhasbeendoneontheproblemofestimatingthestateofalinearsystemwitharandombiasthatinfluencesthesystemdynamicsandobservations.Thebasicmethodistheaugmelltedstateestimationwhosecomputationincreaseswiththebiajsvectordimension.Tomailltaincomputationalamountatalevel,theideaofusingatwasstagestateestimationtoimplementaugmentedstateestimationisintroducedbyFreidland[1],whichistodecouplethecentralfilterintotwoparallelfilters.Thefirstfilter,the"biasfree"filter,isb…     

A Simple Additive Weighting Method for Time-SeriesMultiindices Decision Making and Its Applications

1.INTRODUCTIONThecomprehensiveevaluationofeconomicbenefitsisoftenencowteredintheeconomicresearch.Anditisesselltiallyamultiindicesdecision-makingproblem,whichalsomaybecalledmultiattributedecisionmaking,multicriteriadecisionmaking,multiobjectivedecisionmakingandsoon.Butinpractice,wealsowanttoassess,compare,rankandanalyzetheco~ehensiveeconomicbenefitoveraperiod.Thiskindofeconomicbenefitisreferredtoasoveralleconomicbenefit.Theevaluationofoveralleconomicbellefitisactuallyatimeseriesmultiindice…     

正负离子表面活性剂混合溶液中囊泡的稳定性

水环境中直链烷基羟酸盐与溴代烷基季铵盐１：１混合表面活性剂囊泡可在一定时间和较大温度范围内稳定存在。１－１价型无机盐对混合囊泡稳定性影响较小。但少量高价金属离子与离子、非离子表面活性剂的介入对混合体系形成的囊泡具有较为明显的破坏作用。     

A NEW METHOD FOR FINDING MAJOR EFFICIENT SOLUTIONS AND MAJOR OPTIMAL SOLUTIONS OFDISCRETE MULTIOBJECTIVE PROGRAMMING

1.IntroductionThetermefficiencyisalsoknownasadmissibility,ornoninferiority.Itdepictsthemultiobjectiveprogrammingfromtheangleofsatisfaction.Majorefficiencyisbasedonthelawofmajority,whichhasbeenilitensivilyinvestigatedinpapers[1--3].Theprimaryconceptsaremajorefficientsolutionandmajoroptimalsolution.Considerthefollowingmultiobjectiveprogramming:whereXCR"isthefeasibleregion,f:X~ac,f(x)=(fi(x),f200,'',fm(x))",andfi:X~Risareal-valuedfunction,acandacareEuclideanspaces.oIntroducetwoconesetsHandH…     

REDUCED FORM OF YANG-MILLS EQUATION OFSU(2) ON R~(3,1)

1.NotationsLetR3,1betheMinkowskifour-dimensionalspacewithcoordinatesx=(x')x',x',x').ThemetricdsZ=Zgijdx'dxjofR3'1isgivenbygll=gab=gb3=l,g'=--1,andgij~0fori/j.Letgi(2)betheLiealgebraofgroupSU(2).Theanti-Hermitianrepresentationsofabasisofgi(2)aretakenasfollows:inwhichi=n.Theconnectionisa1-forminwhichThereare12unknownfunctionsA,Thecurvaturetensorsaregivenbyinwhichoj=0/oxj,j=l,2,3,4.TheYang-MillsequationofSU(2)onR3)1is(see[1])TheYang-Millsequationconsistsof12equationsYMjk=0,j~1,2,3,4,k~…     

Study on a Fuzzy Reasoning Algorithm

1.INTRODUCTIONOFTEEPROBLEMInthecourseofinexactinference,factsareexpressedaspi{ti},i=l,2,'',n.Amongthem,piisafactandtiisthetruevalue(05ti51)offacts.Alsowecanunderstandtiisthedegreeofbelieforprobability.Factsareexactwhentiisequalto1;When0相似文献