简介：<正>REPLACEMENTPATTERNSOFGEOTECTONICUNITSLiYuping(Dept.ofChemicalScienceandEngineering,HunanUniv.,Changsha,China,410082)replacementpattern,geotectonicunit,DiwatheoryBaseupontheDiwatheoryandthestudiesofevolutionprocessofgeotectonicunits,thispaperhasadvancedthattherearemanyreplacementpatternsofthegeotectonicu-nitsintheirevolutionprocess.Therearethreereplacementpatterns(eg.suddenchange(nor-mal)pattern,gradualchangeandprogressivepattern)duringtheplatformregionsubstitutesthegeosynclinalregionandthreereplacementpatterns(eg.normalpattern,surpassivepatternandprogressivepattern)whentheDiwaregiondevelopsfrompre-Diwaregions.Theknowl-edgeoftheseregularityisofimportantsignificanceforustodeeplystudytheevolutionofgeo-tectonicunitandthedevelopmentofthecrust.

简介：OnceyouhaveachancetovisitJingchuanandtheMingjiangRiverValleyinnorthwestemSichuanProvince,youwillfindyourselfinamysteriousworld:Riversmeanderthroughmountainslikehadascarves,snow-cappedmountainsfillpeoplewithmysteriousatmosphere,sutrastreamersflutterinwind,pillboxesstretchtheirarmstohugthesky,andtherearevariouskindsofpatternsdrawnonthewallsofvillagesandmountainrocks.

简介：In[1-5],itwasinvestigaedtherealizationsofweightingpatternsinHilbertspaces.Thisnotedealswithdiscretesystemswhichhaveoperatorweightingpartterns.Theorems2-4arenecessaryandsufficientconditionsforJ-unitaryrealizationandforJ-selfadjoint

简介：Ann×nraypatternAissaidtobespectrallyarbitraryifforeverymonicnthdegreepolynomialf(x)withcoefficientsfromC,thereisacomplexmatrixintheraypatternclassofAsuchthatitscharacteristicpolynomialisf(x).Inthispaper,afamilyraypatternsisprovedtobespectrallyarbitrarybyusingNilpotent-Jacobianmethod.

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简介：平行的Liesegang模式猛抛当包含的答案一同沉淀时，乐队们被获得在一个1D胶化矩阵的离子interdiffuse。形成的节俭地可溶的盐，显示磁盘的美丽的层化猛抛对1D试管轴垂直。Liesegang结构从他们的分数维的性质的观点被分析。几何Liesegang模式与象时间，乐队间距和乐队宽度法律那样的著名实验法律在一致被构造。扩散的起始的集中上的乐队间距的依赖(外部)并且不动(内部)电解质(一0并且B0，分别地)被拿跟随Matalon-Packter法律。数学分数维的尺寸和盒子计数尺寸是计算的。分数维的尺寸被发现与增加A增加0并且减少的B0。我们也与雏晶的随机的分发分析马赛克模式，在他们的分数维的性质上比古典Liesegang胶化方法，和报告在不同条件下面成长。最后，乐队在多重谱线被组织的复杂Liesegang模式被学习，并且分数维的性质与复合增加，这被显示出。

简介：在分数维的点模式在点过程当模特儿和参数评价的统计方法当模特儿之间的关系被考察。由使用RipleysK功能的簇分数维图形尺寸的统计评价与更通常使用的方法比较有优点数盒子并且因为它为边效果，不是仅仅为矩形的学习区域而且为学习区域改正，弄弯的边界由地区性的地质学决定了，聚类分数维的尺寸评价。申请对点模式的分数维的尺寸有的估计数盒子一般来说，它服从于相对强壮的滚边的劣势为更小的框完成。例如在这份报纸使用的点模式主要为在加拿大的盾上的Abitibi暴烈的带的金存款。另外，这被建议，全球podiformCr的本地点模式，巨大的硫醚和斑岩铜扔的volcanogenic，它不规则地空间地分布式在以内塑造了有利的道，与类似的分数维的尺寸满足分数维的聚类模型。存款尺寸(金属吨位)的问题也被考虑。几个例子Pareto分发在金属尺寸频率分发建模为最大的存款在提供好结果的盒子被提供。

简介：Foranasymmetricmatrix,thezero-nonzeropatternPofentriescanbedescribedbyadigraphΓ(P)whichhasanarcifanentryisnonzero.Theminimumrankofazero-nonzeropatternisdefinedtobethesmallestpossiblerankoverallrealmatriceshavingthegivenzero-nonzeropattern.Definitionsofvariousgraphparametersthathavebeenusedtoboundminimumrankofazerononzeropattern,includingpathcovernumberandeditdistance,andthetrianglesizetri(P).Inthispaper,byconvertingadigraphintoanundirectedbipartitegraphG(U,V),wepresentanalgorithmforconstructingasub-bipartitegraphwiththeuniquemaximumperfectmatchingM',andobtainthattri(P)=|M'|forP.

简介：AIM:ToobtaininformationontheprevailingpracticepatternsofglaucomaspecialistsinIndia.METHODS:GlaucomaspecialistsattendingtheAnnualConferenceoftheGlaucomaSocietyofIndia(GSI)weresurveyed.Thissurvey,conductedin2013,wasbasedonaninteractiveaudienceresponsesystem.RESULTS:Theinformationwasobtainedfrom146glaucomaspecialists.Approximatelyhalf(n=83;57%)had≥10yofexperienceinmanagingglaucomaandwereininstitutionalpractice(n=74,51%).Goldmannapplanationtonometrywaspreferredby103(72%)specialistswhilstn=25(17.4%)usednon-contacttonometer.Indentationgonioscopywasfavouredbytwo-thirds(n=90,66%)whereasstereoscopicopticdiscexaminationandvisualfieldsusingHumphreyperimeterwasperformedbyamajorityofthespecialistssurveyed(n=115,86%andn=114;83%respectively).Nearlythreequarterspecialists(n=96;72%)preferredopticalcoherencetomographyforimaging.Theprimarychoicefortreatmentofangleclosurediseaseandprimaryopenangleglaucomawaslaser(iridotomy,n=117;93%)andmedicalmanagement(prostaglandinanalogue,n=104;78%),respectively.Approximatelyonlyathirdofthespecialistssurveyed(n=37;28%)wereperformingbothtrabeculectomyandimplantationofaglaucomadrainagedeviceandabouthalf(n=64;47%)werenotoperatingoncongenitalglaucomaatall.CONCLUSION:Thissurveyhasfoundconformancewithpreferredpracticepatternsinseveralareasofdiagnosisandmanagementofglaucoma,buttherewasdiversityinafewareas.TheinformationisasignificantsteptowardsimprovementofglaucomacareinIndia,includingplanningforfuturestrategies.

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简介：Wepresentanumericalstudyonthepatternformationinatwo-dimensionalvibratedgranularlayerbyamoleculardynamicsalgorithm.Throughanalysingthegranulardensitydistribution,wecanexploretheinnermovementprocessofparticles.Itisconfirmedthatthereareadispersiveregimeandasaturationregimeforfrequencydependence,betweenwhichacriticalfrequencyexists,Itisfoundthatthereisanothersaturationregimeforthicknessdependence,Thewavelengthincreaseswithincreasinglayerthickness,butthereisacriticalthicknessafterwhichthewavelengthisunchanged.

简介：Asignpattern(matrix)isamatrixwhoseentriesarethesymbols+,-and0.Forann×nsignpatternmatrixA,thesignpatternclassofA,denotedbyQ(A),isthesetofalln×nrealmatriceswhoseentrieshavesignsindicatedbythecorrespondingentriesofA.WesaythatasignpatternmatrixArequiresamatrixpropertyPifeveryrealmatrixinQ(A)hasthepropertyP.Amatrixwithalldistincteigenvalueshasmanyniceproperties

简介：ＥｆｆｅｃｔｓｏｎＳｕｍａｎｄＤｉｆｆｅｒｅｎｃｅＰａｔｔｅｒｎｓｂｙＡｄａｐｔｉｖｅＮｕｌｌＸｉｅＬｉａｎｇｇｕｉａｎｄＪｉａｎｇＸｉｎｆａ（ＢｅｉｊｉｎｇＩｎｓｔｉｔｕｔｅｏｆＲａｄｉｏＭｅａｓｕｒｅｍｅｎｔ，Ｐ．Ｏ．Ｂｏｘ３９２３，Ｂｅｉｊｉｎ...

简介：XinjiangfolkartpatternsanddesignsarethearttreasuresofChineseculturaltreasure-houseaswellastheprecioushumanisticresourcesofWesternChina.Intheprocessofcollecting,sortingoutandstudyingXinjiangfolkartpatterns,theelegantsimplicityaswellasthegoodtastestandsoutimpressively,andthepatternshapeaswellasthelayoutcompositionshowsadistinctivenationaltraitandastronglocalcolor.As'TheGeometryofNature',fractalgeometrybringsaboutanewperformingmethod.Variousfractalgraphsarecreatedbydifferentgenerators.TheirdynamicpicturescontainvisualinformationofgreatmagnitudeandtheirartisticeffectissimilartoXinjiangfolkartpatterns,whichfullyprovesthefractalbeautyinXinjiangfolkartpatterns.更多还原

简介：Innormalfluvialprocessestheriverchannelisdeterminedbyriverflowswhilethemovementofriverflowsiscontainedbyriverchannels.Therelationshipbetweentherivermorphologyanditsbendcurvatureshowsthatriverswithlargebendcurvaturesalwayshavenarrowanddeepchannelsandthosewithshallowandwidechannelsarealwaysstraight.Theplanformofariverreachesisdeterminedbythecross-sectionalmorphology.Ameanderingriverreachmaybedevelopedundervariouswater-sedimentconditionsaslongasthenarrowanddeepchannelsareformed.

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简介：SupposethatCisafinitecollectionofpatterns.ObserveaMarkovchainuntiloneofthepatternsinCoccursasarun.Thistimeisdenotedbyτ.Inthispaper,weaimtogiveaneasywaytocalculatethemeanwaitingtimeE(τ)andthestoppingprobabilitiesP(τ=τA)withA∈C,whereτAisthewaitingtimeuntilthepatternAappearsasarun.

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简介：与它的主要的图联系的有限的组G的度模式被Moghaddamfar在2005介绍了，下列简单的组被他们的顺序和度模式特别地决定，这被证明：所有分散的简单的组，轮流出现的组Ap(p5是一个成双的素数)并且谎言的一些简单的组打字。在这份报纸，作者继续这调查。特别地，作者证明对称的组Sp+32是的p+4是的合成数字和p+一个素数并且97