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500 个结果
  • 简介:我们证明为四元数海森堡组上的sublaplacian的限制操作员从Lp被围住到Lp如果1p$\tfrac{4}{3}$\tfrac{4}{3}。这与海森堡组,限制操作员没从Lp在上被围住到Lp不同除非p=1。

  • 标签: HEISENBERG群 限制定理 四元 运营商 有界
  • 简介:TheRamanspectraofthenaturalendmembersofthegarnet-groupminerals,whichincludepyrope,almandineandspessariteofFe-Algarnetseriesandgrossularite,andraditeanduvaroviteofCa-Fegarnetseries,havebeenstrdied.MeasuredRamanspectraofthesemineralsarereasonablyandqualitativelyassignedtotheinternalmodes,translationalandrotatorymodesofSiO4tetrahedra,aswellasthetranslationalmotionofbivalentcationsintheXsite.ThestretchandrotatoryA1gmodesfortheFe-AlgarnetseriesshowobviousRamanshiftsascomparedwiththosefortheCa-Fegarnetseries,owingtothecationsresidingintheXsiteconnectedwithSiO4tetrahedrabysharingthetwoedges.TheRamanshiftsofallmemberswithineitheroftheseriesareattributedmainlytothepropertiesofcationsintheXsitefortheFe-AlgarnetseriesandintheYsitefortheCa-Fegarnetseries.

  • 标签: 拉曼光谱 石榴石 榴子石 铁铝榴石 晶体结构
  • 简介:<正>BaiethnicgroupisalsocalledBaizi,Baini,andBaihuowhichmeanswhitepeople,totallyhavingabout1,600,000populationandinhabitsmainlyinDaliBaiNationalityautonomousprefectureinSoutheastChina’sYunnanProvincewiththepopulationof1,340,000.TherestarescatteredinKunming,Lanjiang,Lijiang,LanpingofYunnanandinXichangandBijieinneighboringSichuanandGuizhouprovincesrespectively.SituatedontheYunnan-GuizhouPlateau,Baiareaiscrisscrossedwith

  • 标签: SOUTHEAST AUTONOMOUS ETHNIC Plateau totally Guizhou
  • 简介:WeconsiderHardyspaceswithvariableexponentsdefinedbygrandmaximalfunctionontheHeisenberggroup.ThenweintroducesomeequivalentcharacterizationsofvariableHardyspaces.ByusingatomicdecompositionandmoleculardecompositionwegettheboundednessofsingularintegraloperatorsonvariableHardyspaces.WeinvestigatetheLittlewood-Paleycharacterizationbyvirtueoftheboundednessofsingularintegraloperators.

  • 标签: Hardy空间 HEISENBERG 奇异积分算子 等价刻画 分子分解 原子分解
  • 简介:利用初等数论的方法研究与广义欧拉函数有关的方程φ(n)=2Ω(n)和φ(φ2(n))=2Ω(n)的可解性,并获得方程的所有正整数解.

  • 标签: 广义欧拉函数 方程 正整数解
  • 简介:<正>现代汉语中,“不”字不能和体词性成分组合。不过前后同形的体词性成分之间可以加“不”字构成“NN”格式。例如:(1)这关头,还有什么集体不集体!只能靠各自的直觉判断。(《十月》1984年第6期)(2)右派不右派与我什么相干!反右时我象海边远远一个小石子,浪花也没溅到我身上。(《小说选刊》1985年第6期)(3)甚么酒馆不酒馆,滚它的。(《契诃夫小说选》P43)(4)朱老忠说:“老英雄不老英雄,反正退回十几年去,有三五个人,走不到咱跟前。(梁斌《红旗谱》P304)本文从语法、语义、语用三个角度,粗略地分析“NN”格式的特点。一“NN”格式,根据一定的形式特征可以分为两大类:一类是多项“NN”并列的形式,我们叫做A类;另一类是只有一项“NN”的形式,我们叫做B类。我们先讨论A

  • 标签: 体词性成分 现代汉语 “不” 形式特征 直觉判断 《红旗谱》
  • 简介:НетN2(Her+名词第二格)是一种常见的否定句,表示“没有,不存在”的意思。这种句子中可以加进多种限定语,其中心意思不变:等。

  • 标签: 限定语 中心意思 给你 N2N3
  • 简介:为海森堡组,我们介绍h-quasiconvexfunctions的概念。我们证明h-quasiconvex功能和h凸的集合的观点是相等的并且h-quasiconvex功能局部地从上面被围住,并且而且导出那h-convexfunctions局部地被围住,因此它是局部地由由Danielli-Garofalo-Nhieu使用最近的结果连续的Lipschitz。最后,我们给第一衍生物ofh-quasiconvex功能的L∞标准的估计。

  • 标签: 准凸函数 HEISENBERG群 H凸函数 凸集
  • 简介:TheAnhuiHuaihuaGroupCo.Ltd.islocatedinthecentreofHuainanCity,closetoHuainan’sninecoalminesandthreepowergeneratingplants,witheasy-to-reachtraffic,developedtelecommunications,favorablepolicyandadvantageousdevelopmentconditions.ThecompanyisAnhui’simportantbaseincoalandchemicals,withfixedassetsofRMB900million;itisaClassAlegalpersonenterprise,realizinganintegrationofcapitalandoperation.Productioncapabilityformainproducts:280,000tonsofsyntheticammonia,80,000tonsofconcentratednitrateacid,110,000tonsofcarbamide,140,000tonsofammoniumnitrate,60,000tonsofpuresoda,250m~2

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  • 简介:Ingroupdecisionmaking,acertaindegreeofconsensusisnecessarytoderiveameaningfulandvalidoutcome.ThispaperproposesaconsensusreachingmodelforagroupbyusingtheAnalyticHierarchyProcess(AHP).Itsupportspeopletoimprovetheirgroupconsensuslevelthroughanupdatingoftheirjudgments.Inthismodel,amoderatorsuggeststhemostdiscordantdecisionmakertoupdatehisjudgmentineachstep.Theproposedconsensusreachingmodelallowsdecisionmakerstoacceptorrejectthesuggestionfromthemoderator.Thismodelensuresthatthejudgmentupdatingiseffectiveandthefinalsolutionwillbeofacceptableconsistency.Finally,anumericalexampleisgiventoillustratethevalidityoftheproposedconsensusreachingmodel.

  • 标签: 层次分析模型 群体一致性 层次分析法 MANET 群体决策 主持人
  • 简介:在这份报纸,作者在homotopy上学习homologically小的symplectic组行动椭圆形的表面E(n)并且得到一些刚硬结果。

  • 标签: 椭圆曲面 同伦 辛群 操作
  • 简介:LocatedontheDaxing'anlingforestregionofChina'sfrontier,theDaxing'anlingForestryGroupCo.isoneofthe500nationallargesizeenterprisegroupswithatotalmanagementareaof8.225millionha.Thereare10forestrybureausunderitsjurisdiction,93000in-servicestaffandapopulationof358000.Thenetvalueoffixedassetis3.58billionyuan,Accumulativetotaloutputoftimberhasamountedto110millionm3duringthepast38years.ItsprofitsandtaxturnedovertotheStatehast...

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  • 简介:Theauthorconstructsthesheafofgeneralizedfundamentalgroupofatopologicalspace.Xandobtainstherelationshipbetweenits1stcohomologysetandallcoveringspacesofXundersuitableconditionsimposeduponX.

  • 标签: 拓扑空间 上同调集 覆盖空间 广义基础群
  • 简介:MainWorkforRadiationProtectionGroupin1996¥SongWenjie;WangGuiling;LiZongqiang;ZhuHongbin;FuMingdeng;GaoXiuying;MaHuifangandZhe...

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  • 作者: Fan Shang-Rong Tasneem Umber Liu Xiao-Ping Yan Shao-Mei
  • 学科: 医药卫生 >
  • 创建时间:2020-08-10
  • 出处:《母胎医学杂志(英文)》 2020年第02期
  • 机构:Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen 518036, China; Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Diseases, Shenzhen 518036, China,Department of Microbiology, Kohat University of Science and Technology, Khyber Pakhtunkhwa 26000, Pakistan,Department of Laboratory Science, Peking University Shenzhen Hospital, Shenzhen 518036, China,Clinical College of Guilin Medical University, Guangxi Zhuang Autonomous Region 541001, China
  • 简介:AbstractGroup B streptococcus (GBS) is a leading cause of neonatal infection. Maternal vaginal-rectal colonization with GBS during the intrapartum period is a prerequisite for GBS early-onset disease (EOD). The obstetric measures for effective prevention of GBS EOD include universal prenatal screening by vaginal-rectal culture, correct specimen collection and processing, appropriate implementation of intrapartum antibiotic prophylaxis, and coordination with pediatric care providers. It is now recommended to universal screen GBS between 360/7 and 376/7 weeks of gestation and to identify groups of women who are eligible for intravenous intrapartum antibiotic prophylaxis as a means of preventing GBS EOD.

  • 标签: Streptococcal infections Pregnancy Screening Intrapartum antibiotic prophylaxis