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UWB时域波形描述与仿真，满足FCC组织规定的室内UWB系统(UWB time-domain waveform description and simulation, to meet the FCC requirements for indoor UWB systems organization)

matlab keyongyuzixuedekejian

Day la 1 chuong trinh duoc viet boi hoc vien cao hoc khoa 20 cua truong Khoa hoc tu nhien. Vi thoi gian co han nen chua test duoc

利用此程序可以模拟二维Ising模型，并且利用了统计平均得思想，可以找到系统能量，磁化强度，磁化率以及热容的相变点(Ising model)

计算肿瘤的椭圆紧致度，用于医学图像处理中，用来判别肿瘤的良恶性。(Calculated tumor oval firmness for medical image processing, for discriminating benign and malignant tumors.)

对于特征维数降维的matlab工具箱，包括PCA LDA　ＰＰＣＡ　等(Matlab Toolbox for Dimensionality Reduction (v0.7.1- June 2010) )

说明：  完整的QPSK的调制与解调，已调试通过，认真学习一下(QPSK modulation and demodulation)

本文基于毕肖普法和蒙特卡洛法,利用MATLAB编程软件计算了边坡结构的失效概率Pf和对应可靠指标β.在计算上述Pf和对应β时,考虑了土体三个主要基本参数(重度γ、内摩擦角(Ψ)、粘聚力c)的随机特性.利用MATLAB程序的计算结果表明,随机变量对边坡可靠度的影响与基本随机参数对抗滑反力的贡献大小有关,即,贡献大的基本随机参数,它的随机波动对结构失效概率Pf的影响也较大,反之亦然.另外,基于MATLAB的算例计算结果还表明:边坡结构失效概率Pf对内摩擦角(Ψ)较敏感,而对重度y和粘聚力c次之.其次,当同时考虑三个随机变量的联合波动对Pf的影响时发现,当它们在小范围内随机波动时,其联合特性对Pf的影响较敏感,但当它们在大范围内随机波动时,Pf主要受敏感随机变量的影响,而三个随机变量联合作用对Pf的影响和敏感随机变量(Ψ)单独作用时相差不大.由此可见,在实际边坡工程可靠性分析中,土体内摩擦角起主要作用,不容忽视.(Based Bishop method and Monte Carlo method, using MATLAB programming software to calculate the failure probability Pf and the corresponding slope reliability index β structure in the calculation of the above Pf and the corresponding β, consider the three main basic soil parameters (severe γ internal friction angle (Ψ), cohesion c) of the random nature of calculation results using MATLAB program shows that the influence of random variables on the reliability of the basic random slope parameters against anti- slip contribution to the size of the force , that is , the contribution the basic parameters of large random , random fluctuations which affect the probability of structural failure Pf is also larger , and vice versa addition, the calculation based on MATLAB numerical results also show that : the structure of slope failure probability Pf internal friction angle (Ψ) more sensitive , while severe and cohesion c y followed . Secondly, when taking into account the impact of the joint fl)

说明：  基于matlab和声卡采集信号并输出不同的波形，有良好的界面，方便操作(Matlab and sound card based signal acquisition and output of different waveforms, a good interface, easy operation)

说明：  2011数学建模a题，运用地理统计学内梅洛指数法，和综合指数法，简单实用(2011 Mathematical modeling of a problem, the use of geographic statistical Neimei Luo index method, and the composite index method, simple and practical)