hua-wei-bi-shi-mian-shi-zi-liao

说明：  编制阶跃响应与方波响应相互转化的程序、由阶跃响应数据获得对象传递函数模型的通用程序、由阶跃响应数据获得对象微分方程模型的通用程序。并通过一个传递函数进行验证（阶跃响应和方波响应数据可利用simulink生成）(A program for converting step response to square wave response, a general program for obtaining transfer function model from step response data, and a general program for obtaining differential equation model from step response data are compiled. It is validated by a transfer function (step response and square response data can be generated by simulink))

基于互功率谱的时延估计，能量谱分析计算,现代信号处理中谱估计在matlab中的使用。( Based on the time delay estimation of power spectrum, Energy spectrum analysis and calculation, Modern signal processing used in the spectral estimation in matlab.)

说明：  Noguchi, Hiroshi & Mori, Taketoshi & Sato, Tomomasa. (2011). Human daily behavior accumulation in real home environment via distributed sensors in a long term. This paper reports the case study about long-term sensor data accumulation of natural human behavior in a real home environment. Human behavior measurement in long term and in the real environment is difficult because of devices, software and system problems. We rented an apartment and introduced 4 sensor modules (pyroelectric sensor module, proximity sensor module, electric current sensor module and LRF module) into the rooms. The systems for data collection from modules, database system for long-term accumulation and sensor data visualization software for behavior annotation are also developed. We measured the sensor data during 4 years continuously. This data will assist to develop methods for typical behavior extraction, behavior recognition and anomaly behavior detection.

软件工程课件,介绍软件开发的技术,方法,原理(16-20)章-Software engineering courseware, introduction of software development techniques, methods, principles (16-20) Chapter

一个运行代码，m个指标,n个样本，对没个指标分别求权重，利用MATLAB软件进行编程，求取权重(A running code, m indicators, n samples, no indicators for the weight of each, using MATLAB software programming, get the weight)

MP3 电路设计，学习中的好帮手，作为电路学习的基本知识-MP3 circuit design, the study of extremely helpful in learning the circuit as a basic knowledge

股票成本计算器,很有用的.如果需要源程序,请发邮件!-stock cost calculators, very useful. If you need source code, please send mail!

用VHDL实现的电子时钟，24小时格式，可以通过按键调整时间得益于数电知识中的计数器级联构成高进制计数器的启发，我的思路是这样的：1）各不同位的时钟问题。时钟共有6位，分别为秒的高低位、分的高低位、时的高低位。把秒低位的进位当作秒高位的时钟，秒高位的进位当作分低位的时钟，依次类推，可以解决不同位的不同时钟问题。2）各不同位的进制问题。与此同时要解决进制问题，秒分的低位为十进制，秒分的高位为六进制，以及时的高位为三进制（电子时钟为24小时制），这五种情况都易解决，但时的低位就有点复杂了，既有十进制的情形又有四进制的情形。仔细琢磨之后，根据两条IF语句解决了这个问题。那就是若小时高位为”0000”或”0001”时，时的低位为十进制，若小时高位为”0010”，时的低位为四进制。3）校时问题。刚开始时，对了校时没有个思路。但有一次我想看看整体进制等对不对，于是把整体时钟调快了很多，这样，很快就走了“24”小时，然后灵感就来了，就想可以设置这么两个不同频率的整体时钟，一个可能控制分，一个可以控制小时，然后为了可以精确到秒，又设置了一个可以让整个时钟系统暂停的按键，这样整个时钟的实现就完成了，最后又在时分和分秒中间加入了一个小横杠”-”。

本书是数学通信领域的一本经典教材，通过对概率论及随机过程的复习，详细介绍了数字和模拟信源编码，数字调制信号和窄带信号与系统的特征、加性高斯白噪声中数字通信的调制和最佳调制与检测方法、基于最大似然准则的载波相位估计和定时同步的方法、不同信道模型的信道容量及随机编码、带限信道的信号设计、受到符号干扰恶化信号的解调与检测问题、自适应信道均衡、多信道与多载波调制、扩展频谱信号和系统、衰落信道上的数字通信。本书适合通信工程相关专业的高年级本科生、研究生及工程技术人员阅读。()

K-means算法是基于划分的思想，因此算法易于理解且实现方法简单易行，但需要人工选择初始的聚类数目即算法是带参数的。类的数目确定往往非常复杂和具有不确定性，因此需要专业的知识和行业经验才能较好的确定。而且因为初始聚类中心的选择是随机的，因此会造成部分初始聚类中心相似或者处于数据边缘，造成算法的迭代次数明显增加，甚至会因为个别数据而造成聚类失败的现象。(K-means algorithm is based on the idea of partitioning, so the algorithm is easy to understand and the implementation method is simple and feasible, but it requires manual selection of the initial number of clusters, that is, the algorithm is with parameters. The number of classes is often very complex and uncertain, so professional knowledge and industry experience are needed to better determine. Moreover, because the selection of initial clustering centers is random, some initial clustering centers will be similar or at the edge of data, resulting in a significant increase in the number of iterations of the algorithm, and even the phenomenon of clustering failure due to individual data.)