吴小华---接口说明文档

本书主要讲述了以健身调查数据示范数据的清理和准备、多元回归分析.、用美国经济数据构建二阶最小二乘模型、以心理学数据为例示范探索性因子分析(This book focuses on the health survey data to model the data cleaning and preparation, multiple regression analysis, with building a second U.S. economic data, least squares models to psychological data as an example of exploratory factor analysis model)

说明：  本VI介绍Labview对数据库前期使用的操作方法，希望和大家一起分享交流！(This VI introduces the operation method of Labview in the early stage of database usage. I hope to share and exchange with you!)

某次国内关于DO-178C与其旧版本178B的研讨会的报告的几个内容的总结，主要有：178B的简介、178C的改进、工具鉴定标准等。(A meeting about DO-178C in shanghai last year,this is its report and some brief summary.)

介绍了一种基于锁频锁相环(FPLL)的载波跟踪算法。频率跟踪模块可以适应较大动态范围的频率变化，基于软件的数控振荡器(NCO)模块可以达到极高的频率跟踪精度。由于有锁频环的频率牵引，锁相环路滤波器可以设计得很窄，具有很好的抑噪性能，满足精确跟踪载波相位的要求。因此，该基于FPLL的载波跟踪算法可以适应信号存在较大的动态范围和噪声干扰的应用环境；同时，其鉴频鉴相算法表达式简单，易于用可编程数字器件实现。(Introduce an approach based on frequency-locking phase-locked loop (FPLL) carrier tracking algorithm. Frequency tracking module can adapt to a larger dynamic range of the frequency change, software-based numerical control oscillator (NCO) module can achieve the very high frequency tracking accuracy. Because of the frequency lock loop traction PLL filter can be designed very narrow, with very good noise suppression performance, to meet the precise requirements of carrier phase tracking. Therefore, the FPLL carrier-based tracking algorithm can be adapted to signal the existence of a larger dynamic range and noise of the application environment at the same time, the PFD algorithm expression is simple, easy to use programmable digital devices.)

一套变频器完整的原理图，变频器维修的初学者可以参考一下，了解变频器的内部结构。(Completa schematica di un convertitore di frequenza, l inverter può fare riferimento al mantenimento dei principianti per capire la struttura interna del convertitore.)

说明：  上海交通大学软件工程课程提供的软件工程模板全集（英文版），其中包括了如用例规约，补充规约等所有的模板(Shanghai Jiaotong University Software Engineering courses provide software engineering templates Complete Works (English version), which includes the use cases such as the Statute, the Statute added all the templates)

fluent UDF教程，主要用于学习UDF编程方法(fluent UDF tutorials, mainly for learning programming UDF)

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说明：  Java上机实验代码，好用!!!!有登录验证，密码保护功能(Java pratice)

STM32互联型产品 具有USB OTG、支持IEEE1588的以太网接口 双CAN接口和音频级别I 2 S接口的32位微控制器(STM32F107 data introduction)