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A Components Based Framework for Quantum Key Distribution Networks

The difficulties related to operating basic quantum communication technologies and the inherent limitations of their direct transmission distances, be these be a consequence of absorption or optical aperture, leads to the fact that current generations of Quantum Key Distribution (QKD) systems are essentially designed to work in a stand-alone mode on a single link.

On the existence of solutions of a two-layer green roof mathematical model

The aim of this article is to fill part of the existing gap between the mathematical modeling of a green roof and its computational treatment, focusing on the mathematical analysis. We first introduce a two-dimensional mathematical model of the thermal behavior of an extensive green roof based on previous models and secondly we analyze such a system of partial differential equations.