The 30 Days Online Money Making Challenge. I had been learning about making money online for the last four years without any success in finding a concept that will make money instantly until now. I will be blogging everyday for the next 30 days in making it a success. Can it work? Can I do it? Find out in the 30 days challenge. 1st Day - April Fools Day. Happy April Fools Day! Suddenly I have this. That finally complete the formulae of continuous success in life. Most of us has a up and down cycle of.

About life in general and things of interest. A New Website - RWD. I finally updated my website so that visitors can view it on their mobile phones and tablets. The really neat thing is that the website adapts itself to whatever you are using to browse it. After doing it for a number of clients and seeing their hits climb to double or treble I felt it was about time I looked after my own interests as well. My Work Anniversary - 23 Years.

This project is to simulate the satellite orbit. With consideration of the air drag of the atmosphere. For simplicity the satellite is supposed to orbit the Earth on a two-dimensional plane, therefore the motion of the satellite can be described by two 2. Which can be further transformed into four 1. Is used and the error of Runge-Kutta method is also discussed.