The jacobi.f program solves the Helmholtz equation on a regular mesh, using an iterative Jacobi method with over-relaxation. Parallelism is exploited in both the solver and the numerical error checking
標簽： Helmholtz iterative equation program
上傳時間： 2016-04-03
上傳用戶：杜瑩12345
Programs in the irregular grid design package described in this manual are used to carry out five main functions: verification and adjustment of coastline and bathymetric data preparation of an irregular triangular depth grid covering the domain to be modelled production of a preliminary irregular triangular model grid with nodes suitably positioned for accurate and efficient numerical modelling interactive checking and editing, including trimming and joining, of model grid display and plotting of model output.
標簽： described irregular Programs package
上傳時間： 2016-04-09
上傳用戶：fnhhs
In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve recently derived, to train a two-layer perceptron, so as to classify medical data (kindly provided by Steve Roberts and Will Penny from EE, Imperial College). The data and simulations are described in: Nando de Freitas, Mahesan Niranjan and Andrew Gee Nonlinear State Space Estimation with Neural Networks and the EM algorithm After downloading the file, type "tar -xf EMdemo.tar" to uncompress it. This creates the directory EMdemo containing the required m files. Go to this directory, load matlab5 and type "EMtremor". The figures will then show you the simulation results, including ROC curves, likelihood plots, decision boundaries with error bars, etc. WARNING: Do make sure that you monitor the log-likelihood and check that it is increasing. Due to numerical errors, it might show glitches for some data sets.
標簽： Rauch-Tung-Striebel algorithm smoother which
上傳時間： 2016-04-15
上傳用戶：zhenyushaw
Digital Signal and Image Processing Using MATLAB The most important theoretical aspects of image and signal processing (ISP) for both deterministic and random signals are covered in this guide to using MATLAB® . The discussion is also supported by exercises and computer simulations relating to real applications such as speech processing and fetal-heart–rhythm tracking, and more than 200 programs and functions for numerical experiments are provided with commentary.
標簽： theoretical Processing important Digital
上傳時間： 2016-07-08
上傳用戶：z1191176801
本文檔介紹了如何使用各種內嵌工具，函數和其他一些小技巧來加強使用matlab的速度和效率，是廣大愛好者必讀的文檔。具體內容請參閱文檔。 Learn how to use the Profiler tool, vectorized functions, and other tricks to writing efficient MATLAB code. This article includes how to convert any array into a column vector, bounding a value without if statements, and repeating/tiling a vector without repmat. Contents: * The Profiler * Array Preallocation * JIT Acceleration * Vectorization * Inlining Simple Functions * Referencing Operations * Numerical Integration * Signal Processing * Miscellaneous Tricks
上傳時間： 2013-12-11
上傳用戶：cuiyashuo
It was proposed that perfect invisibility cloaks can be constructed for hiding objects from electromagnetic illumination (Pendry et al., Science 312, p. 1780). The cylindrical cloaks experimentally demonstrated (Schurig et al., Science 314, p. 997) and theoretically proposed (Cai et al., Nat. Photon. 1, p. 224) have however simplified material parameters in order to facilitate easier realization as well as to avoid infinities in optical constants. Here we show that the cylindrical cloaks with simplified material parameters inherently allow the zeroth-order cylindrical wave to pass through the cloak as if the cloak is made of a homogeneous isotropic medium, and thus visible. To all high-order cylindrical waves, our numerical simulation suggests that the simplified cloak inherits some properties of the ideal cloak, but finite scatterings exist.
標簽： invisibility constructed proposed electrom
上傳時間： 2013-12-18
上傳用戶：13215175592
Using an easy-to-follow format, this book explains the basics of MATLAB up front. You ll find out how to plot functions, solve algebraic equations, and compute integrals. You ll also learn how to solve differential equations, generate numerical solutions of ODEs, and work with special functions. Packed with hundreds of sample equations and explained solutions, and featuring end-of-chapter quizzes and a final exam, this book will teach you MATLAB essentials in no time at all.
標簽： easy-to-follow explains MATLAB basics
上傳時間： 2017-04-10
上傳用戶：時代電子小智
In the last decade the processing of polygonal meshes has emerged as an active and very productive research area. This can basically be attributed to two developments: Modern geometry acquisition devices, like laser scanners and MRT, easily produce raw polygonal meshes of ever growing complexity Downstream applications like analysis tools (medical imaging), computer aided manufacturing, or numerical simulations all require high quality polygonal meshes as input. The need to bridge the gap between raw triangle soup data and high-quality polygon meshes has driven the research on ecient data structures and algorithms that directly operate on polygonal meshes rather than on a (most often not feasible) intermediate CAD representation.
標簽： processing productive the polygonal
上傳時間： 2017-06-03
上傳用戶：TF2015
opencv OpenCV is cross-platform middle-to-high level API that consists of a few hundreds (>300) C functions. It does not rely on external numerical libraries, though it can make use of some of them (see below) at runtime, if they are available
標簽： cross-platform middle-to-high consists hundreds
上傳時間： 2013-12-25
上傳用戶：李夢晗
數字控制振蕩器（NCO，numerical controlled oscillator）是軟件無線電、直接數據頻 率合成器（DDS，Direct digital synthesizer）、快速傅立葉變換（FFT，Fast Fourier Transform） 等的重要組成部分，同時也是決定其性能的主要因素之一，隨著芯片集成度的提高、在信號 處理、數字通信領域、調制解調、變頻調速、制導控制、電力電子等方面得到越來越廣泛的 應用。
上傳時間： 2017-07-15
上傳用戶：nanshan
