Ruoxi Wang

Just another geek.

Year

2016

Elegant Abaqus: Handing Over Abaqus Computing Task to a Remote Linux Computer

Some times it's preferable that you run analysis job on a remote supercomputer while doing modeling and visualization on a tiny laptop. Here shows an example of how to setup. I will use Abaqus 2016 as an example, but the method... Continue Reading →

Installing LyX with existing TeX Live on Ubuntu 16.04

Since I'm so paranoid about the up-to-dateness of my tools, I want to install LyX from their official PPA and TeX Live from CTAN and let them work together. But LyX tend to depend on TeX Live from Ubuntu repository, so... Continue Reading →

Half Bridge Circuit of HOBBYWING FLYFUN 12AE Electronic Speed Controller

An Electronic Speed Controller is a brushless DC motor controller commonly used in model airplane, boat and car, typically sensorless. The driver circuit consists of three half bridges to generate 3-phase AC voltage over three terminals of BLDC motor. The... Continue Reading →

A better way of estimating derivatives from discrete-time signal?

A question jumped into my head while processing data from MEMS sensors and Vicon: Is there any better ways of estimating first-order derivative of a function using samples at a fixed time interval, i.e. a "table"? To be precise, suppose we... Continue Reading →

Toward Internet security: a practical guide to OpenVPN tunneling.

Abstract This article presents a brief, step-by-step guide of setting up an VPN server which relays all your Internet traffic in a secure way so that you can surf the Internet as if you are at your server's location, with... Continue Reading →

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