学科分类
/ 16
316 个结果
  • 简介:Inthispaper,weshallestablishthateachweaksolutionofp-harmonictypesystemswiththegradientsbelowthecontrollablegrowthbelongsto,HldercontinuityspaceswithanyHlderexponenta∈[0,1).Furthermore,wecanobtainthatthegradientsofthecorrespondingweaksolutionsalsobelongtolocallyHldercontinuityspaceswithsomeHlderexponent.

  • 标签: 可管理生长 p-谐波系统 完整规律性 梯度 HOLDER连续性
  • 简介:InthispaperL^p-L^qestimatesforthesolutionu(x,t)tothefollowingperturbedhigh-erorderhyperbolicequationareconsidered,(ρπ--a△)(ρπ--b△)u+V(x)u=O,x∈R^n,n≥6,ρ1eu(x,O)=O,ρ^3eu(x,O)=f(x),(j=O,1,2).WeassumethattheotentialV(x)andtheinitialdataf(x)arecompactlysupported,andV(x)issufficientlysmall,thenthesolutionu(x,t)oftheaboveproblemsatisfiesthesameL^p-L^qestimatesasthatoftheunperturbedproblem.

  • 标签: L^p-L^q估计 高阶分支 双曲型偏微分方程 紧支撑
  • 简介:InanefforttoutilizeNMRtechniquefortheanalysisofthestructuralcomponentsofwoodandbiomassessuchaslignin,wemadeacomparativestudyoflignincontentsofseveraltypesoflignocellulosicmaterialsbothbeforeandafterenzymatichydrolyses.Tothisend,EucalyptusGlobulus,Norwaysprucethermomechanicalpulp(TMP)cornstoverandEucalyptuskraftpulpwereball-milledandtreatedwithcellulasetopreparematerialswithhighlignincontents.Thesematerialswereanalyzedvia31PNMRinionicliquids.Theresultsshowthatthecontentsofvariousfunctionalgroupsforthelignocellulosicmaterialsafterenzymatichydrolysesaregenerallyinagreementwiththosefromtheircorrespondingenzymaticmildacidolysisliginins(EMALs),indicatingthat31PNMRanalysisoflignocellulosicmaterialsinionicliquidsisapromisingmethodforquantitativecharacterizationoflignocellulosicmaterials.

  • 标签: 核磁共振分析 木质材料 离子液体 木质素含量 纤维素材料 核磁共振技术
  • 简介:利用天然气脱硫厂的酸气、氢氧化钠、对二氯苯和助剂磷酸钠,在六甲基苯磷酰三胺溶剂中,常压下缩聚4~6小时,制备了线型结晶性高分子量聚苯硫醚(HMWPPS)。该方法具有的明显优点是:设备简单、容易操作、活性高、溶剂稳定、产品收率高、成本低、适宜于大规模工业生产。

  • 标签: 高分子量聚苯硫醚 重复单元 切变粘度 六甲基磷酰三胺
  • 简介:Inthispaperwewillshowthatifanapproximationprocess{Ln}n∈Nisshapepreservingrelativetotheconeofallk-timesdifferentiablefunctionswithnon-negativek-thderivativeon[0,1],andtheoperatorsLnareassumedtobeoffiniterankn,thentheorderofconvergenceofDkLnftoDkfcannotbebetterthann2evenforthefunctionsxk,xk+1,xk+2onanysubsetof[0,1]withpositivemeasure.Takingintoaccountthisfact,wewillbeabletofindsomeasymptoticestimatesoflinearrelativen-widthofsetsofdifferentiablefunctionsinthespaceLp[0,1],p∈N.

  • 标签: 渐近估计 N-宽度 线性相关 次可微函数 逼近过程 线性关系
  • 简介:Inthispaper,thenotionofp-waveletpacketsonthepositivehalf-lineR+isintroduced.Anewmethodforconstructingnon-orthogonalwaveletpacketsrelatedtoWalshfunctionsisdevelopedbysplittingthewaveletsubspacesdirectlyinsteadofusingthelowpassandhigh-passfiltersassociatedwiththemultiresolutionanalysisasusedintheclassicaltheoryofwaveletpackets.Further,themethodovercomesthedifficultyofconstructingnon-orthogonalwaveletpacketsofthedilationfactorp>2.

  • 标签: 非正交小波包 WALSH函数 多分辨率分析 小波子空间 高通滤波器 经典理论
  • 简介:有限的组G的亚群H被称为TI亚群如果H∩H~x=1或Hfor所有x∈G。在这篇论文,为有限p组,所有abeliansubgroups在是TI亚群的一个完全的分类,被给。

  • 标签: 有限P-群 阿贝尔亚群 平凡交 TI-亚群
  • 简介:Let(.theMuckenhouptclass).Inthispaper,theauthorintroducetheweightedHerz-typeHardyspaces(w2)andpresenttheiratomicdecomposition.Usingtheatomicdecomposition,theauthorfindouttheirdualspaces,establishtheboundednessonthesespacesofthepseudo-differentialoperatorsoforderzeroandshowthat,theclassofC(Rn)-functionswithcompactlysupport,isdenseinandthereisasubsequence,whichconvergesindistrbutionalsensetosomedistributionof,ofanyboundedsequenceinInaddition,theauthoralsosetuptheboundednessofsomenon-linearquantitiesincompensatedcompactness.

  • 标签: 量子
  • 简介:在本文中,主要讨论了(p,λ)-Koszul模范畴(Kλ~P(A))和线性表示模范畴(L(A))两者之间的关系.特别地,我们得到了KλP(A)=L(A)的一些充分必要条件.

  • 标签: (p λ)-Koszul模 有线性表示的模
  • 简介:作者与非线性的边界状况学习p(x)拉普拉斯算符方程。由使用变化方法,在不安上的适当假设下面称为f1(x,u),f2(x,u)并且h1(x),h2(x),以便联系功能分别地满足“山通行证词根”和“喷泉定理”,答案的存在和复合被获得。讨论基于可变代表Lebesgue和Sobolev空格的理论。

  • 标签: 非线性边界条件 拉普拉斯方程 多解 Sobolev空间 喷泉定理 山路引理
  • 简介:InthispaperwestudythetheoreticalpropertiesofmultigridalgorithmfordiscretizationofthePoissonequationin2Dusingamortarelementmethodundertheassumptionthatthetriangulationsoneverysubdomainareuniform.WeprovetheconvergenceoftheW-cyclewithasufficientlylargenumberofsmoothingsteps.ThevariableV-cyclemultigridpreconditionerarealsoavailable.

  • 标签: 多重网格算法 POISSON方程 收敛性 有限元法
  • 简介:ThepaperisacontributiontotheproblemofapproximatingrandomsetwithvaluesinaseparableBanachspace.Thisclassofset-valuedfunctioniswidelyusedinmanyareas.Weinvestigatethepropertiesofp-boundedintegrablerandomset.Basedonthisweendowitwith△pmetricwhichcanbeviewedasaintegraltypehausdorffmetricandpresentsomeapproximationtheoremofaclassofconvolutionoperatorswithrespectto△pmetric.Moreoverwealsocanestablishanalogoustheoremforotherintegraltypeoperatorin△pspace.

  • 标签: SET-VALUED function random set CONVOLUTION operator
  • 简介:P2P网络贷款的兴起为个人和小微企业带来了诸多的融资便利.但由于P2P网络贷款市场上存在着信息不对称的问题,导致市场上出现了诸多乱象.本文针对P2P行业信息不对称的现状,以P2P网络贷款平台和借款者作为参与者,构建了不完全信息博弈模型.该模型以实现P2P市场上的帕累托最优为研究目的,并分别探讨了在混合均衡和准分离均衡两种不同情况下,各自达到帕累托最优状态所需的市场条件,以及相关影响因素,并据此提出了相应的政策建议.

  • 标签: P2P网贷 不完全信息博弈 帕累托最优
  • 简介:Inthispaper,weproposealocalfuzzymethodbasedontheideaof"p-strong"communitytodetectthedisjointandoverlappingcommunitiesinnetworks.Inthemethod,arefinedagglomerationruleisdesignedforagglomeratingnodesintolocalcommunities,andtheoverlappingnodesaredetectedbasedontheideaofmakingeachcommunitystrong.Weproposeacontributioncoefficientbvcitomeasurethecontributionofanoverlappingnodetoeachofitsbelongingcommunities,andthefuzzycoefficientsoftheoverlappingnodecanbeobtainedbynormalizingthebvcitoallitsbelongingcommunities.Therunningtimeofourmethodisanalyzedandvarieslinearlywithnetworksize.Weinvestigateourmethodonthecomputergeneratednetworksandrealnetworks.Thetestingresultsindicatethattheaccuracyofourmethodindetectingdisjointcommunitiesishigherthanthoseoftheexistinglocalmethodsandourmethodisefficientfordetectingtheoverlappingnodeswithfuzzycoefficients.Furthermore,thelocaloptimizingschemeusedinourmethodallowsustopartlysolvetheresolutionproblemoftheglobalmodularity.

  • 标签: 检测网络 模糊方法 社区 模糊系数 计算机网络 网络规模
  • 简介:SomenecessaryandsufficientconditionsoftheoontinuityofA_x~+aregivenin[1]Inthispaper,someadvancesonthebaseandtheconditionoftheoontinuityofA_~+forSemi-FredholmoperatorsA_xarepresented.

  • 标签: OPERATORS ADVANCES implies HEIDELBERG PROOF Berlin