Tian-Quan Yun · Asian Journal of Geological Research · 2019
The relation between earthquake and planet motion is one of topics interesting to people. Based on conservation law of energy, this paper proves that the energy release by earthquake proportions to the square of velocity of Earth’s rotation, while velocities of revolution of Eart...
Tian-Quan Yun · Journal of Advances in Mathematics and Computer Science · 2017
The wind speed equation of circular cyclone is a set of non-linear partial differential equations (PDE) with 4 unknown functions u (wind speed), ρ (density), p (pressure) and T (temperature) and is separated to 14 unknown functions, 4 unknown constants related by 15 equations. Th...
Tian-Quan Yun · Journal of Advances in Mathematics and Computer Science · 2017
This paper uses a point model of cylindrical box wrapped by zero-weighted membrane to derive a wind speed equation of circular cyclone by method of section based on Boyle’s law, Charles’ law and Newton’s laws. The obtained equation is a non-linear partial differential equation (P...
Tian-Quan Yun · Journal of Advances in Mathematics and Computer Science · 2016
This paper proves the existence of solution of wind speed equation of a point in air by fixed point theorem of periodic g-contrastive mapping. Further more, the solution of the wind speed equation is obtained by method of separating variables.
Tian-Quan Yun · Journal of Advances in Mathematics and Computer Science · 2015
Limit is a basic concept of calculus. However, according to the updated definition, the limit of periodic function at infinity is not in existence. This conclusion of description does not suit with the periodic phenomenon. For example, the temperature on earth is changed periodic...
Tian-Quan Yun · Current Journal of Applied Science and Technology · 2015
A method for seeking range of a missing plane based on Law of energy conservation is suggested. The method starts with the final information of the location(s) of the plane A(x,y,z) provided by satellites. A flying path with most far from an origin in same time interval [0,T] is...