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An important requirement in the standard finite element method (FEM) is that all elements in the underlying mesh must be tangle-free i.e., the Jacobian must be positive throughout each element. To relax this requirement, an isoparametric…

数值分析 · 数学 2023-03-21 Bhagyashree Prabhune , Krishnan Suresh

Structural equation models (SEMs) are commonly used to study the structural relationship between observed variables and latent constructs. Recently, Bayesian fitting procedures for SEMs have received more attention thanks to their potential…

统计方法学 · 统计学 2024-07-12 Khue-Dung Dang , Luca Maestrini , Francis K. C. Hui

We present a taxonomy of the variability mechanisms offered by modeling languages. The definition of a formal language encompasses a syntax and a semantic domain as well as the mapping that relates them, thus language variabilities are…

软件工程 · 计算机科学 2014-09-24 Maria Victoria Cengarle , Hans Grönninger , Bernhard Rumpe

Finite element method (FEM) is one of the most important numerical methods in modern engineering design and analysis. Since traditional serial FEM is difficult to solve large FE problems efficiently and accurately, high-performance parallel…

分布式、并行与集群计算 · 计算机科学 2015-06-01 Meng Wu , Can Yang , Taoran Xiang , Daning Cheng

The scaled boundary finite element method (SBFEM) has recently been employed as an efficient means to model three-dimensional structures, in particular when the geometry is provided as a voxel-based image. To this end, an octree…

数值分析 · 数学 2023-10-31 Hauke Gravenkamp , Albert A. Saputra , Sascha Eisenträger

We develop a family of expanded mixed Multiscale Finite Element Methods (MsFEMs) and their hybridizations for second-order elliptic equations. This formulation expands the standard mixed Multiscale Finite Element formulation in the sense…

数值分析 · 数学 2012-05-22 Lijian Jiang , Dylan Copeland , J. David Moulton

We survey recent generalizations and improvements of the linear programming method that involve semidefinite programming. A general framework using group representations and tools from graph theory is provided.

信息论 · 计算机科学 2010-09-09 Christine Bachoc

In this position paper, we present a prototype of a visualizer for functional programs. Such programs, whose evaluation model is the reduction of an expression to a value through repeated application of rewriting rules, and which tend to…

编程语言 · 计算机科学 2024-11-04 John Whitington , Tom Ridge

The choice of stabilization term is a critical component of the virtual element method (VEM). However, the theory of VEM provides only asymptotic guidance for selecting the stabilization term, which ensures convergence as the mesh size…

数值分析 · 数学 2023-04-04 Alessandro Russo , N. Sukumar

We discuss the possibility to solve Modern Numerical Relativity problems using finite element methods (FEM). Adopting a "user friendly" software for handling totally general systems of nonlinear partial differential equations, FEMLAB, we…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Christian Cherubini , Simonetta Filippi

Electrical machines commonly consist of moving and stationary parts. The field simulation of such devices can be very demanding if the underlying numerical scheme is solely based on a domain discretization, such as in case of the Finite…

计算工程、金融与科学 · 计算机科学 2017-09-18 Lars Kielhorn , Thomas Rüberg , Jürgen Zechner

The Finite Element Method (FEM) is a widely used technique for simulating crash scenarios with high accuracy and reliability. To reduce the significant computational costs associated with FEM, the Finite Element Method Integrated Networks…

计算工程、金融与科学 · 计算机科学 2024-09-27 Simon Thel , Lars Greve , Maximilian Karl , Patrick van der Smagt

The eXtended Finite Element Method (XFEM) is an approach for solving problems with non-smooth solutions. In the XFEM, the approximate solution is locally enriched to capture discontinuities without requiring a mesh which conforms to the…

数值分析 · 数学 2013-12-23 Christapher Lang , David Makhija , Alireza Doostan , Kurt Maute

The purpose of this report is in examining the generalization performance of Support Vector Machines (SVM) as a tool for pattern recognition and object classification. The work is motivated by the growing popularity of the method that is…

机器学习 · 计算机科学 2014-12-16 Eugene Borovikov

Vectorization is increasingly important to achieve high performance on modern hardware with SIMD instructions. Assembly of matrices and vectors in the finite element method, which is characterized by iterating a local assembly kernel over…

数学软件 · 计算机科学 2020-08-26 Tianjiao Sun , Lawrence Mitchell , Kaushik Kulkarni , Andreas Klöckner , David A. Ham , Paul H. J. Kelly

At the heart of any finite element simulation is the assembly of matrices and vectors from discrete variational forms. We propose a general interface between problem-specific and general-purpose components of finite element programs. This…

In this work we present a novel monolithic Finite Element Method (FEM) for the hydroelastic analysis of Very Large Floating Structures (VLFS) with arbitrary shapes that is stable, energy conserving and overcomes the need of an iterative…

计算工程、金融与科学 · 计算机科学 2022-06-28 Oriol Colomés , Francesc Verdugo , Ido Akkerman

Recently there have been many advances in research on language modeling of source code. Applications range from code suggestion and completion to code summarization. However, complete program synthesis of industry-grade programming…

人工智能 · 计算机科学 2021-09-07 Sander de Bruin , Vadim Liventsev , Milan Petković

This paper presents the first time implementation of the eXtended Finite Element Method (XFEM) in the general purpose commercial software COMSOL Multiphysics. An enrichment strategy is proposed, consistent with the structure of the…

计算工程、金融与科学 · 计算机科学 2021-09-08 Ahmad Jafari , Pooyan Broumand , Mohammad Vahab , Nasser Khalili

Protein language models (PLMs) have shown promise in improving the understanding of protein sequences, contributing to advances in areas such as function prediction and protein engineering. However, training these models from scratch…

机器学习 · 计算机科学 2024-12-19 Shivasankaran Vanaja Pandi , Bharath Ramsundar