the focus of this paper is to consider the compressed sensing problem. it is stated that the compressed sensing theory, under certain conditions, helps relax the nyquist sampling theory and takes smaller samples. one of the important tasks in this theory is to carefully design measurement matrix (sampling operator). most existing methods in the literature attempt to optimize a randomly initiali...

Signalling via tissue-specific receptors for fibroblast growth factor is important in tracheal branching and mesodermal patterning in Drosophila; both processes may involve a common primary response - detachment and directed migration of the target cells - that is conserved from worms to mammals.