The subject may best be prefaced by a brief consideration of a few characteristics of sound production, especially of those that apply to the percussion of a membrane. When a drum is struck a certain note is produced, and the four cardinal characteristics of this note are pitch, intensity, quality and duration.

A 46-year-old man with psoriasis and morbid obesity developed acute aphasia and right hemiplegia. As a result of his weakness, he had fallen and struck his right eye on a desk. His presenting examination demonstrated right periorbital ecchymosis without accompanying ptosis, expressive aphasia, left gaze deviation with corresponding hemianopsia, and dense right hemiplegia, summating an NIH Strok...

Abstract In this article, the coupled matrix nonlinear Schrödinger (NLS) type equations are gauge equivalent to equation of flow from R 1 {{\mathbb{R}}}^{1} complex Grassmannian manifold G <m:mo ...

There is a vast theory of the asymptotic behavior orthogonal polynomials with respect to measure on R \mathbb ...