chap7

一维水质模型，本程序研究一维河流的污染物扩散，短时间持续排放BOD的浓度变化规律 本程序采用中心隐式差分求解 问题t=0到t=1h偶然排放BOD 使河水断面L0=10mg/L河流平均速度5km/h 纵向弥散系数D=2km2/h BOD衰减系数k1=0.015h-1 解BOD浓度 L(x，t)(One-dimensional water quality model, the procedure of one-dimensional dispersion of pollutants in the river, a short continuous changes of the concentration of BOD emissions of the program implicit difference method with central issues t = 0 t = 1h accidental emissions to the BOD to the river section L0 = 10mg/L average speed of the river 5km/h vertical diffusion coefficient D = 2km2/h BOD decay coefficient k1 = 0.015h-1 Solution for BOD concentration L (x, t))

一个3-4-1型的mamdani模糊控制系统，可适用于很多情况。(A 3-4-1 type mamdani fuzzy control system, applicable to many situations.)

铁蝶式期权蝶式价差策略:把价差策略分解成单个期权的组合并分析期初成本和期末收益.(Iron Butterfly spread options strategy: to spread down into a combination of a single policy options and cost analysis at the beginning and end of the income)

adhoc的csma/ca仿真代码，按802.11的标准执行退避机制，接入信道。(the the adhoc' s csma/ca simulation code, perform backoff mechanism in the 802.11 standard, access channel.)

MATLAB® is a high-level technical computing language and interactive environment for algorithm development, data visualization, data analysis, and numeric computation. Using the MATLAB product, you can solve technical computing problems faster than with traditional programming languages, such as C, C++, and Fortran.You can use MATLAB in a wide range of applications, including signal and image processing, communications, control design, test and measurement, financial modeling and analysis, and computational biology. Add-on toolboxes (collections of special-purpose MATLAB functions, available separately) extend the MATLAB environment to solve particular classes of problems in these application areas.MATLAB provides a number of features for documenting and sharing your work. You can integrate your MATLAB code with other languages and applications, and distribute your MATLAB algorithms and applications.

calssification algorithm knn

PcA和Fisher方法的人脸识别,希望对大家有用，(PcA Fisher and methods of face recognition, we hope to useful,)

数字型号处理伯克利版上机习题答案（第六章和第十章）(The digital models on the Berkeley version of problem sets (Chapters VI and Chapter X))

相控阵雷达 相控阵雷达的仿真程序 波束形成(Copyright (c) 2013, The MathWorks, Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution * Neither the name of the The MathWorks, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTIC)

this is very useful code for awgn channel all detial ar available inthis code