简介：给出了n阶带形状参数的三角多项式T-Bézier基函数.由带形状参数的三角多项式T-Bézier基组成的带形状参数的T-Bézier曲线,可通过改变形状参数的取值而调整曲线形状,随着形状参数的增加,带形状参数的T-Bézier曲线将接近于控制多边形,并且可以精确表示圆、螺旋线等曲线.阶数的升高,形状参数的取值范围将扩大.
简介：在n+~(10)B反应，~5He簇排放与更新的水平计划和新光模型被讨论了参数。在这篇论文，与~5He排放有关的反应隧道详细被列出。由为轻原子核使用新反应模型，为n+~(10)的全部的出去的中子的thedouble微分的生气的节在E_n=14.2兆电子伏的B反应被计算了，并且结果与大小相当同意很好。特别地，在精力尖的系列，对全部的出去的中子双differential十字节的从~5He排放的贡献也被分析了，并且在14.2兆电子伏被给了的E_n=的60°的partialenergy尖的系列。一旦~5He排放被考虑，计算结果显示那，有在低精力区域的全部的出去的中子的double-differentialmeasurements的试穿能被改进。因此，在轻原子核的反应过程适当地认为~是5He排放是必要的。
简介：Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.
简介：Arealn×nsymmetricmatrixX=(x_(ij))_(n×n)iscalledabisymmetricmatrixifx_(ij)=x_(n+1-j,n+1-i).Basedontheprojectiontheorem,thecanonicalcorrelationde-compositionandthegeneralizedsingularvaluedecomposition,amethodusefulforfindingtheleast-squaressolutionsofthematrixequationA~TXA=Boverbisymmetricmatricesisproposed.Theexpressionoftheleast-squaressolutionsisgiven.Moreover,inthecorrespondingsolutionset,theoptimalapproximatesolutiontoagivenmatrixisalsoderived.Anumericalalgorithmforfindingtheoptimalapproximatesolutionisalsodescribed.
简介：AgraphGiscalledchromatic-choosableifitschoicenumberisequaltoitschromaticnumber,namelych(G)=χ(G).Ohba’sconjecturestatesthateverygraphGwith2χ(G)+1orfewerverticesischromaticchoosable.ItisclearthatOhba’sconjectureistrueifandonlyifitistrueforcompletemultipartitegraphs.Recently,Kostochka,StiebitzandWoodallshowedthatOhba’sconjectureholdsforcompletemultipartitegraphswithpartitesizeatmostfive.Butthecompletemultipartitegraphswithnorestrictionontheirpartitesize,forwhichOhba’sconjecturehasbeenverifiedarenothingmorethanthegraphsKt+3,2*(k-t-1),1*tbyEnotomoetal.,andKt+2,3,2*(k-t-2),1*tfort≤4byShenetal..Inthispaper,usingtheconceptoff-choosable(orL0-size-choosable)ofgraphs,weshowthatOhba’sconjectureisalsotrueforthegraphsKt+2,3,2*(k-t-2),1*twhent≥5.Thus,Ohba’sconjectureistrueforgraphsKt+2,3,2*(k-t-2),1*tforallintegerst≥1.
简介：
简介：<正>Foranoddfunctionf(x)definedonlyonafiniteinterval,thispaperdealswiththeexistenceofperiodicsolutionsandthenumberofsimpleperiodicsolutionsofthedifferentialdelayequation(DDE)(?)(t)=-f(x(t-1)).Byuseofthemethodofqualitativeanalysiscombinedwiththeconstructingofspecialsolutionsaseriesofinterestingresultsareobtainedontheseproblems.
简介：Inthiswork,webrieflydiscussanovelclassofmodifiedgravitylikef(T,TG)gravity.Inthisbackground,weassumethenewagegraphicversionofpilgrimdarkenergyandreconstructf(T,TG)modelsfortwospecificvaluesofs.Wealsodiscusstheequationofstateparameter,squaredspeedofsoundandwDE-wDEplaneforthesereconstructedf(T,TG)models.Theequationofstateparameterprovidesphantom-likebehavioroftheuniverse.ThewDE-wDEplanealsocorrespondstoΛCDMlimit,thawingandfreezingregionsforbothmodels.
简介：Theoneplusone(1+1)modeofhydrosilationreactionofladderlikecis-isotaticpolyallylsilsesquioxane(AllyI-T)andpolyhydrosilsesquioxane(H-T)usingdicyclopentadienylplatinumdichloride(Cp2PtCl2)asthecatalystleadstotheformationofanewpolyorganosiloxane(POS).ThepresenceofnanoscaletubularstructureintheproductPOSwaspreliminarilyprovedbyIR,1H-NMR,differentialscanningcalorimetry(DSC),X-raydiffraction(XRD),gelpermeationchromatography(GPC),atomicforcemicroscopy(AFM)andmolecularsimulation.
简介：T网孔是允许T连接的矩形的网孔的本地修正。在T网孔上的花键涉及许多领域，例如有限元素方法，CAGD等等。一个花键空格的尺寸是为花键的理论和应用程序的一个基本问题。然而，决定自从它，一个花键空格的尺寸重重地是困难的问题取决于分区的几何性质。在许多情况中，尺寸是不稳定的。在这份报纸，我们由使用变光滑的cofactor-conformality方法在T网孔上在花键空格的尺寸学习不稳定性。在有T周期的T网孔上的花键空格的修改尺寸公式也被介绍。而且，一些例子被给在一些特殊网孔上在花键空格的尺寸说明不稳定性。[从作者抽象]
简介：UsingtheefectiveHamiltonianmethod,weanalyzetheB0-ˉB0mixingintheextensionofthestandardmodel(SM)wherebaryonnumberandleptonnumberarelocalgaugesymmetries.ThenumericalresultsindicatethecorrectionfromtheextraparticlestothemassdiferencemBissignificant.Thereisa60%enhancementcomparedtotheSMpredictionformBatmost,whichagreeswiththecurrentexperimentalresult.
简介：Thefeaturesofthelow-lyingspectraoffour-bodyA+B-A+B-systemshavebeendeducedbasedonsymmetry.Usingthemethodoffew-bodyphysics,wecalculatetheenergyspectraofA+B-A+B-systemsinaharmonicquantumdot.Wefindthatthebiexcitoninatwo-dimensionalquantumdotmayhaveotherboundexcitedstatesandthequantummechanicalsymmetryplaysacrucialroleindeterminingtheenergylevelsandstructuresofthelow-lyingstates.
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![Catalytic Asymmetric Hydrogenation of Ethyl 2-（Benzo[<b style='color:red'>b</b>]thiophen-<b style='color:red'>5</b>-yl）-2-oxoacetate with Ru-SunPhos in the Formal Synthesis of <b style='color:red'>T</b>-588](/image/thesis1 "Catalytic Asymmetric Hydrogenation of Ethyl 2-（Benzo[<b style='color:red'>b</b>]thiophen-<b style='color:red'>5</b>-yl）-2-oxoacetate with Ru-SunPhos in the Formal Synthesis of <b style='color:red'>T</b>-588")
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![N（<b style='color:red'>t</b>）=N（<b style='color:red'>t</b>）[a（<b style='color:red'>t</b>）-∑n i=1bi（<b style='color:red'>t</b>）Ni（<b style='color:red'>t</b>-τi（<b style='color:red'>t</b>））]的周期正解](/image/thesis6 "N（<b style='color:red'>t</b>）=N（<b style='color:red'>t</b>）[a（<b style='color:red'>t</b>）-∑n i=1bi（<b style='color:red'>t</b>）Ni（<b style='color:red'>t</b>-τi（<b style='color:red'>t</b>））]的周期正解")
