P020180608516798097666

this lecture introduction on power devices.this notes is very easy of examination point of view

硕 士 生 相 关 博 弈 论 的 课 件(paper of game theory)

本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。(In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.)

说明：  《Python语言在Abaqus中的应用》（曹金凤板）书中例子源码。("Python language in ABAQUS application" (Cao jinfengban) book example source code.)

ICL7660是一款不错的正压变负压的稳压芯片，这里提供中英文资料各一份(ICL7660 is a good positive change negative regulator chip, the information provided here in English A)

使用sph方法求解NS方程，在此程序中考虑了表面张力的影响(this code solves N-S equation which uses SPH method，further more it consist of the surface tension part。)

一本R语言函数详细解释大全，详细的介绍了大部分R语言所用到的函数(A detailed explanation of the R language function Guinness, a detailed description of the language used by the majority of R function)

薛培峰用FVCOM模式模拟长江盐水入侵的案例，很不错，很经典(Xue Peifeng FVCOM simulated by salt water intrusion in the case of the Yangtze River, is very good, very classic)

一个关与运算放大器的稳定的研究文章，这是第六部分。(Op amp with a clearance of a stable research papers, this is Part VI.)

几篇关于graph cut的论文,GRABCUT彩色图像分割算法的研究,基于GRAPH CUT的快速纹理合成算法(Several papers on graph cut paper, GRABCUT color image segmentation algorithm, based on GRAPH CUT Fast Texture Synthesis Algorithm)