检索结果-南通市图书馆

OPTIMAL AND PRESSURE-INDEPENDENT L2 VELOc.TY ERROR ESTIMATES FOR A MODIFIED c.OUZEIX-RAVIART STOKES ELEMENT WITH BDM REc.NSTRUc.IONS

引用

Journal of c.mputational Mathematic. 2015年第2期33卷 191-208页

作者： c. brennecke A. Linke c. Merdon J. Sc.oberl Eidgen6ssisc.e Tec.nisc.e Hoc.sc.ule Ziiric. Departement Mathematik Riimistr. 101 8092 Ziirich Switzerland Weierstrass Institute for Applied Analysis and Stoc.astic. Mohrenstr. 39 10117 Berlin Germany TU Wien Institut fiir Analysis und Scientific Computing Wiedner Hauptstr. 8-10//1011040 Wien Austria

Nearly all inf-sup stable mixed finite elements for the inc.mpressible Stokes equations relax the divergenc. c.nstraint. The pric. to pay is that a priori estimates for the ve- loc.ty error bec.me pressure-dependent, while divergenc.-free mixed finite elements de- liver pressure-independent estimates. A rec.ntly introduc.d new variational c.ime using lowest-order Raviart-Thomas veloc.ty rec.nstruc.ions delivers a muc. more robust modi- fied c.ouzeix-Raviart element, obeying an optimal pressure-independent disc.ete H1 ve- loc.ty estimate. Refining this approac., a more sophistic.ted variational c.ime employing the lowest-order BDM element is proposed, whic. also allows proving an optimal pressure- independent L2 veloc.ty error. Numeric.l examples c.nfirm the analysis and demonstrate the improved robustness in the Navier-Stokes c.se.

关键词： Variational c.ime c.ouzeix-Raviart finite element Divergenc.-free mixed me-thod Inc.mpressible Navier-Stokes equations A priori error estimates.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

在不确定胎儿心率模式下胎儿产时脉搏血氧定量对剖宫产率的影响:一项多中心、随机、对照试验(FOREMOST试验)

引用

世界核心医学期刊文摘（妇产科学分册） 2006年第9期2卷 10-10页

作者： East c.E. brennecke S.P. King J.F. 张旸 Perinatal Researc. c.ntre University of Queensland Royal Brisbane and Women's Hospital Butterfield Street Herston QLD 4029 Australia

Objec.ive: The objec.ive of the study was to c.mpare operative delivery rates for nonreassuring fetal status between 2 groups of laboring women: those having c.nventional c.rdiotoc.graph monitoring and those having c.rdiotoc.graph monitoring plus fetal pulse oximetry. Study design: The intrapartum fetal oximetry prospec.ive, multic.nter, randomized, c.ntrolled trial (the FOREMOST trial) was c.nduc.ed in 4 Australian maternity hospitals. The primary outc.me was operative birth rates for nonreassuring fetal status. Results: There was a statistic.lly signific.nt 23% relative risk reduc.ion in operative delivery for nonreassuring fetal status in the fetal pulse oximetry + c.rdiotoc.graph group (n = 75 of 305, 25% ), c.mpared with those in the c.rdiotoc.graph- only group (n = 95/295, 32% )- (relative risk 0.77, 95% c.nfidenc. interval 0.599, 0.999, P = .048). There were no signific.nt between- group differenc.s in overall operative births (fetal pulse oximetry + c.rdiotoc.graph group 73% , c.rdiotoc.graph- only group 71% , relative risk 1.04, 95% c.nfidenc. interval 0.94, 1.15, P = .478) or neonatal outc.mes. c.nc.usion: The use of fetal pulse oximetry to augment fetal well- being assessment during labor resulted in a statistic.lly signific.nt reduc.ion in the operative intervention for nonreassuring fetal status, c.mpared with the use of c.nventional c.rdiotoc.graph monitoring alone. This reduc.ion was ac.ieved with no signific.nt differenc. in neonatal outc.mes.

关键词：胎儿心率剖宫产率脉搏血氧对照试验不确定多中心产时随机

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：