PRACTICA-4---DELTA

利用Matlab编写的一个具有图形界面的日历程序，可以显示日记和时间。(Prepared by use of Matlab graphical interface with a calendar program, you can display the diary and time.)

一种基于快速矢量量化算法的超普图像压缩技术(Hyperspectral Data Compression Using a Fast Vector Quantization Algorithm)

it is cluster1 matlab code

高速铁路路基沉降是一个复杂的系统过程,涉及不同时期、不同工况,选用单一的预测模型不足以反映路基整体的变形规律.Logistic模型及Verhulst模型的曲线均为S形,可以反映全过程的地基沉降与时间的关系.针对路基填筑期和降水期两个时段利用MATLAB软件编制程序计算模型参数,得到Logistic模型和灰色Verhulst模型,进而求得两者的最优加权组合模型.对比结果表明:在路基填筑期由两者的最优加权组合模型预测得到的结果与实测结果较吻合,拟合精度高于单一模型 而在降水期Verhulst模型的预测值更接近实测值,平均相对误差约为1.75％,拟合精度较高.(High-speed railway subgrade settlement process is a complex system involving different times and in different conditions, the choice of a single forecasting model does not adequately reflect the overall deformation of roadbed. Curve Logistic model and Verhulst models are S-shaped, the whole process can be reflected foundation settlement versus time. against roadbed construction period of two hours and precipitation using MATLAB software programming model parameters, the Logistic model and gray Verhulst model, and then get the optimal model of a weighted combination of the two. comparative results indicate : results and experimental results in the roadbed construction period by the weighted combination of the best of both models predicted than the anastomosis fitting accuracy than a single model precipitation predicted value of Verhulst model closer to the actual value of the average relative error approximately 1.75 fitting accuracy.)

四种高斯滤波算法的比较：EKF、UKF、QKF和CKF(Comparison of four Gaussian filtering algorithm: EKF, UKF, QKF and CKF)

该损伤模型通过 商用有限元软件ABAQUS /Explicit 的用户子程序VUMAT 实现，并使用该模型对碳纤维增强环氧树脂 复合材料层合板在横向低速冲击作用下的损伤和变形行为进行预测分析． 数值仿真的结果与试验结 果进行了比较，吻合良好，验证了该模型的有效性．(Through coding user subroutine VUMAT of finite element software ABAQUS /explicit， and applied the model to an example，carbon fiber reinforced epoxy composite laminates under low velocity impact，the prediction for damage and deformation were good agreement with the experimental results．)

说明：  该程序为常规波束成形的程序，在计算机上已经运行过了，可以正常运行。(The program for the conventional beam-forming process, the computer has to run off, and it works.)

matlab通信仿真与应用 对matlab和simulink并对数字和模拟电路和通信仿真进行举例说明 有大量源码 (Matlab simulation and communication applications for Matlab and Simulink as well as digital and analog Circuit simulation and communication for a large number of examples FOSS)

根据陈燕生《液体动静压轴承》编写的有回油槽径向静压轴承的程序，可显示承载能力、压强、刚度及温升等图谱(According to Chen Yansheng " liquid hybrid bearing," have written back to the tank radial hydrostatic bearing program, you can display the carrying capacity, pressure, stiffness and temperature profiles, etc.)

encoding bch in dvb-t2 standards