简介：相配的曲线和表面是在CAD系统，不一致的合理B花键(NURBS)在被用作事实上的标准的重要操作。在本地角落相配，在那个角落交叉首先被做的二条曲线拆散，然后第三条相配的曲线是增加在里面的顺利与G1-orG2-continuity加入二条曲线。在这篇论文我们在场基于曲线扩展解决联合问题的研究。这个延期算法的下列好性质深入地被利用：(1)原来的形状的parameterization不变化；(2)没有另外的碎片被创造。各种各样的例子被举证明我们的答案简单、有效。

简介：Novelhierarchicalporouscarbonmembraneswerefabricatedthroughasimplecarbonizationprocedureofwell-definedblendingpolymermembraneprecursorscontainingthesourceofcarbonpolyacrylonitrile(PAN)andanadditiveofpolyvinylpyrrolidone(PVP),whichwaspreparedusingphaseinversionmethod.Theas-fabricatedmaterialswerefurtherusedastheactiveelectrodematerialsforsupercapacitors.TheeffectsofPVPconcentrationinthecastingsolutiononstructurefeatureandelectrochemicalcapacitiveperformanceoftheas-preparedcarbonmembraneswerealsostudiedindetail.Astheelectrodematerialforsupercapacitor,ahighspecificcapacitanceof278.0F/gcouldbeattainedatacurrentof5mA/cm2andabout92.90%capacityretentioncouldbemaintainedafter2000charge/dischargecyclesin2mol/LKOHsolutionwithaPVPconcentrationof0.3wt%inthecastingsolution.Thefacilehierarchicalporestructurepreparationmethodandthegoodelectrochemicalcapacitiveperformancemakethepreparedcarbonmembraneparticularlypromisingforuseinsupercapacitor.