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In this work we present the mathematical foundation of an assembly code for finite element approximations of nonlocal models with compactly supported, weakly singular kernels. We demonstrate the code on a nonlocal diffusion model in various…

数值分析 · 数学 2022-07-11 Manuel Klar , Christian Vollmann , Volker Schulz

We present an algorithm for parallelising the TreePM code. We use both functional and domain decompositions. Functional decomposition is used to separate the computation of long range and short range forces, as well as the task of…

天体物理学 · 物理学 2007-05-23 Suryadeep Ray , J. S. Bagla

A general multi-terminal source code and a general multi-terminal channel code are presented. Constrained-random-number generators with sparse matrices, which are building blocks for the code construction, are used in the construction of…

信息论 · 计算机科学 2018-01-11 Jun Muramatsu , Shigeki Miyake

In this work we propose an efficient and accurate multi-scale optical simulation algorithm by applying a numerical version of slowly varying envelope approximation in FEM. Specifically, we employ the fast iterative method to quickly compute…

光学 · 物理学 2024-12-03 Fan Xiao , Jingwei Wang , Zhongfei Xiong , Yuntian Chen

We determine the asymptotic proportion of free modules over finite chain rings with good distance properties and treat the asymptotics in the code length n and the residue field size q separately. We then specialize and apply our technique…

信息论 · 计算机科学 2022-12-20 Anna-Lena Horlemann , Violetta Weger , Nadja Willenborg

This paper presents a 55-line code written in python for 2D and 3D topology optimization (TO) based on the open-source finite element computing software (FEniCS), equipped with various finite element tools and solvers. PETSc is used as the…

数学软件 · 计算机科学 2020-12-16 Abhinav Gupta , Rajib Chowdhury , Anupam Chakrabarti , Timon Rabczuk

Numerical methods: mimetic finite differences and finite elements, are analyzed from a numerical point of view. It seeks to conclude on the efficiency, order of convergence and computational cost of these methods. The analysis is done in…

数值分析 · 数学 2015-04-21 Abdul Lugo , Giovanni Calderón

We propose an algebraic setup for end-to-end physical-layer network coding based on submodule transmission. We introduce a distance function between modules, describe how it relates to information loss and errors, and show how to compute…

信息论 · 计算机科学 2016-11-15 Elisa Gorla , Alberto Ravagnani

A transverse multipole expansion is derived, including the longitudinal components necessarily present in regions of varying magnetic field profile. It can be used for exact numerical orbit following through the fringe field regions of…

加速器物理 · 物理学 2016-09-08 Yannis Papaphilippou , Jie Wei , Richard Talman

Algebraic methods for the design of series of maximum distance separable (MDS) linear block and convolutional codes to required specifications and types are presented. Algorithms are given to design codes to required rate and required…

信息论 · 计算机科学 2022-07-14 Ted Hurley

Altermagnets exhibit spin-split electronic bands like ferromagnets, yet they are magnetically compensated like collinear antiferromagnets. Altermagnets thus combine the benefits of ferromagnets and antiferromagnets, opening routes to…

强关联电子 · 物理学 2026-03-17 Zeyu Ma , Yidi Wang , Gal Tuvia , Kevin Hauser , Jiaqiang Yan , Jennifer E. Hoffman

Decreasing sequence length is a common way to accelerate transformers, but prior token reduction work often targets classification and reports proxy metrics rather than end-to-end latency. For semantic segmentation, token reduction is…

计算机视觉与模式识别 · 计算机科学 2026-04-08 Simon Ravé , Pejman Rasti , David Rousseau

This paper introduces a new computational framework to derive electromagnetic field derivatives with respect to multiple design parameters up to any order with the Finite-Difference Time-Domain (FDTD) technique. Specifically, only one FDTD…

信号处理 · 电气工程与系统科学 2019-10-23 Kae-An Liu , Costas D. Sarris

In this work, we present hardware and software implementations of flexible polar systematic encoders and decoders. The proposed implementations operate on polar codes of any length less than a maximum and of any rate. We describe the…

信息论 · 计算机科学 2016-08-29 Gabi Sarkis , Ido Tal , Pascal Giard , Alexander Vardy , Claude Thibeault , Warren J. Gross

In this letter, we evaluate the finite-length performance of network coding when using either random or structured encoding matrices. First, we present our novel construction of structured network codes over Fq (q = 2^m) using Pascal…

网络与互联网体系结构 · 计算机科学 2019-11-28 Tan Do-Duy , M. Angeles Vazquez-Castro

In an interesting paper Professor Cunsheng Ding provided three constructions of cyclic codes of length being a product of two primes. Numerical data shows that many codes from these constructions are best cyclic codes of the same length and…

信息论 · 计算机科学 2017-04-03 Maosheng Xiong

The magnetic field from a uniformly magnetised, rectangular prism is known exactly, which is the basis for a large number of micromagnetic simulations. Here we derive an analytical solution for the field from a periodically repeating…

材料科学 · 物理学 2026-04-15 Frederik Laust Durhuus , Andrea Roberto Insinga , Rasmus Bjørk

The present paper is devoted to studying of minimal parametric fillings of finite metric spaces (a version of optimal connection problem) by methods of Linear Programming. The estimate on the multiplicity of multi-tours appearing in the…

度量几何 · 数学 2019-04-24 A. O. Ivanov , A. A. Tuzhilin

In Multiple-Input Multiple-Output (MIMO) systems, Sphere Decoding (SD) can achieve performance equivalent to full search Maximum Likelihood (ML) decoding, with reduced complexity. Several researchers reported techniques that reduce the…

信息论 · 计算机科学 2015-03-13 Boyu Li , Ender Ayanoglu

In this paper, we investigate the necessity of finite blocklength codes in distributed transmission of independent message sets over channels with feedback. Previously, it was shown that finite effective length codes are necessary in…

信息论 · 计算机科学 2018-01-17 Mohsen Heidari , Farhad Shirani , S. Sandeep Pradhan