【摘 要】
：
We formulate an A-optimal experimental design criterion for infinitedimensional nonlinear Bayesian inverse problems.Our method aims to minimize the average variance of a Gaussian approximation to post
【机 构】
：
The Univ.of Texas at Austin
论文部分内容阅读
We formulate an A-optimal experimental design criterion for infinitedimensional nonlinear Bayesian inverse problems.Our method aims to minimize the average variance of a Gaussian approximation to posterior law of inversion parameters by solving a bi-level PDE-constrained optimization problem.I will also discuss risk-averse optimization under uncertainty with application to optimal control of PDEs with uncertain parameter fields.We use numerical results for a porous medium flow problem with uncertain permeability to illustrate the methods.
其他文献
本文制备了RGO改性的高度有序TiO2纳米管阵列.利用SEM和光电化学等方法对制备的电极进行了表征.SEM结果表明RGO均匀覆盖在TiO2纳米管的表面及侧面.光电化学结果显示,在可见光照射下降解甲基橙染料,RGO-TNTs显现出稳定性和明显增强的光电催化性能.
Palladium loading tantalum oxide(Pd/Ta2O5)particles were synthesized using reflux method.The X-ray diffraction(XRD)result reveals that Pd/Ta2O5 belongs to orthorhombic crystal phase.The cyclic voltamm
A simple and effective approach was demonstrated to synthesize flowerlike Pt nanocrystals on polydopamine(PDA)functionalized reduced oxide graphene(RGO).Inspired by mussels,the PDA/RGO composites were
氧还原反应(ORR)是燃料电池、金属空气电池等的阴极反应，研究高效ORR催化剂及ORR过程具有重要意义。目前，贵金属Pt仍然是ORR活性最高的催化剂，然而Pt资源有限，价格高昂，亟需寻找Pt替代催化剂。在各种非Pt催化剂中，氧化钴对ORR具有较高的活性。鉴于氧化钴价态丰富，表面结构复杂，文献中较少涉及氧化钴粒径、晶相、表面结构等对ORR活性影响的研究。本工作在实现氧化钴纳米粒子粒径、晶相控制的基础
Mathematical modelling of the flow mechanism of natural gas through unconventional hydrocarbon reservoirs,such as,shale gas or tight gas,results into nonlinear time-dependent convection-diffusion equa
Description of the three-dimensional procedure for numerical computation and visualization of steam flow in power plant condensers is presented in this paper.The purpose of the present study is to dev
we discuss the construction of the FCT-stabilized finite element level-set-based method for for reaction-diffusion-convection equations on evolving-in-time surfaces.The level-set methodology is used f
Given a linear difference equation,there is a difference-differential Galois group that encodes the differential-algebraic dependencies among the solutions of the equation.
Recent experiments(Ouriemi & Vlahovska,2014)show intriguing surface patterns when a uniform electric field is applied to a droplet covered with colloidal particles.Depending on the particle properties
The challenge of optimal information gathering-for the purpose of inference,prediction,design,or control-pervades fields ranging from geophysics to chemical engineering and beyond.These questions can