排序方式: 共有19条查询结果,搜索用时 15 毫秒
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1Intr0ducti0nIllthisPaPerwestudythefordpointsandcouPledfiXedpointsofskewincreasing0PeratorsandtheiraPplicaion.LetXbeaBanachsPaCcwithapartialorderingintr0ducedbythcc0neK-LctF:X-Xbean0peraorinX.FiscaJledinCreasingifF2SFgf0raJl2Sy.Asiswellkllown,inthetheorerns0fhapointforincreasingoPerbo,thereisaninterestinginterreboi0nbetweenPr0pertiesofKandF,thatisThoorem1l1I'I2ILetXbeaBanachpee,partiaJlyorderedbythecolleKGX.Let[a,b]beanordeintervalandF:[a,b]- [a,b]increasin.ThenFhasabop0intif0… 相似文献
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We investigate how the barb of bird feathers is changed along both the rachis and barb.To investigate the microstructures and the mechanical behaviors of barbs,a series of barbs are manually cut from an eagle’s primary feather to observe the cross sections.Aλ-like cross section with a tiny hook is observed at the right feet at each section.Afterwards,a measurement of the setup system is developed to evaluate the leakage ratio of a feather followed by a numerical predicting approach based on the CFD method.It is found that the air leakage increases linearly against the pressure,and the predicted results coincide well with the experimental results.Finally,the influences of leakage of the flight feather on both steady and unsteady aerodynamics are studied. 相似文献
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本文在实Hilbert空间中讨论了带权算子的对称线性单调算子的固有值问题,得出了最小正固有值及其相应的固有向量的一些相关结论,并给出了它们在某些边值、初边值问题等方面的应用 相似文献
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Inbiology,itisveryimportanttoinvestigatethemovementofsomecellsororganismsinsomegivenbiologica1system(cf.[1,2]).Inordertounderstandhowthemovementrulesareaffectedbytheeffectofthechemo-attractant,OthmerandStevensintroducedin[1]severalgeneralclassesofpartialdifferentialequations.Inoneoftheirmodels,theyconsideredamasterequation,i.e.barrierandnearestneighborlatticemodel.Followingalimitingprocessthemodelisdescribedbythefollowingsystemofpartialdifferentialequations:wherep(x,t)istheparticledensityofap… 相似文献
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讨论了一类基于趋化性现象的强耦合非线性偏微分方程组,利用相轨分析方法,得到了该趋化性模型行波解存在的充分条件和必要条件. 相似文献
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本文讨论了在齐次Dirichlet边界条件下具有扩散现象的一类广义单种群模型的正定态解.给出了使得严格正解存在的λ的取值范围,并且讨论了当λ充分大时正解的稳定性. 相似文献
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本文研究了主方程中带有反应项的Keller-Segel趋化性模型.利用截断函数、半群算子和不动点定理,获得了范数估计以及模型局部解的存在唯一性. 相似文献