The present paper deals with the mixed mode fracture analysis of a weakened orthotropic half-plane with multiple cracks propagation. The orthotropic half-plane contains Volterra type glide and climb edge dislocations. It is assumed that the medium is under in-plane loading conditions. The distributed dislocation technique is used to obtain integral equations for the dynamic problem of multiple ...

The theory of the dynamic medium reference (DMR) has already been presented in several articles, particular, Pignard [Phys. Essays 32 , 422 (2019]. objective this article is to present gravitational waves within framework DMR theory. For this, an important relation established between potential and speed flux medium. This makes it possible deduce two differential equations verified by medium, o...

It has been known for about a century that psychophysical response curves (perception of a given physical stimulus vs. stimulus intensity) have a large dynamic range: many decades of stimulus intensity can be appropriately discriminated before saturation. This is in stark contrast with the response curves of sensory neurons, whose dynamic range is small, usually covering only about one decade. ...

Sensory arrays made of coupled excitable elements can improve both their input sensitivity and dynamic range due to collective non-linear wave properties. This mechanism is studied in a neural network of electrically coupled (e.g. via gap junctions) elements subject to a Poisson signal process. The network response interpolates between a Weber-Fechner logarithmic law and a Stevens power law dep...