speech sciences deal with the acoustical characteristics of speech by means of sophisticated soft wares as well as hard wares. although, a speech science is a well known science in the developed countries, especially the western societies, however, it has been remained almost unknown in iran, though, in recent years a group of scholars have been involved in this branch of science. the applicati...

conclusions four major dietary patterns were identified in the present studied population that can be used to provide tangible dietary advice for the elderly. results four major dietary patterns were identified in the studied population: 1) healthy pattern, characterized by a higher intake of vegetables, tomato and tomato sauce, vegetable oil, olive, and fruits; 2) unhealthy pattern, characteri...

abstract natural disasters threatening and endangering human communities has resulted in the study and research of such disasters through the related sciences and present methods of forecasting their behavior with time and place and also from a qualification and quantity viewpoint. to this end, numerous methods for the determination of the maximum flood in various return period has been made av...

Given a unitary operator A representing a physical quantity of interest, we employ concepts from group representation theory to define two natural signal energy densities for A. The first is invariant to A and proves useful when the effect of A is to be ignored; the second is covariant to A and measures the “A” content of signals. We also consider joint densities for multiple operators and, in ...

Article history: Available online 18 May 2012