Abstract: Nowadays, problems such as greenhouse effect and air pollution become increasingly prominent. The power generation process should pay attention to the fuel cost and reduce the pollution to ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

Department of Mathematics, Shahid Rajaee Teacher Training University, Tehran, Iran. In mathematics, a Green’s function is the impulse response of an inhomogeneous differential equation defined on a ...