Precisely, after a proper change of basis in the state space the condition can be expressed in terms of the notions of stabilizability and detectability.

The materials used in solar panels today have been tested over decades, and although Weiss says his company's films will last for 20 years, their durability hasn't been verified.

The result of simulation shows that the method can detect weak edges which possess strong continuity and anti-noise property, also is superior to the traditional edge detection operators.