Migration is the permanent movement of some people called migrant, from one place to another for some reasons and values. Their migration is determined by some values and goals that lead to changes in migrants’ interaction system. In human history the shape of migration was changed due to social and environmental changes. From the eve of 19 century migration became important social phenom...

in this paper we introduce two-wavelet constants for square integrable representations of homogeneous spaces. we establishthe orthogonality relations for square integrable representationsof homogeneous spaces which give rise to the existence of aunique self adjoint positive operator on the set of admissiblewavelets. finally, we show that this operator is a constant multiple of identity operator...

let be a locally compact non?abelian group and be a compact subgroup of also let be a ?invariant measure on the homogeneous space . in this article, we extend the linear operator as a bounded surjective linear operator for all ?spaces with . as an application of this extension, we show that each frame for determines a frame for and each frame for arises from a frame in via the linear operator .

motivated by the intensive and powerful works concerning additive‎ ‎mappings of operator algebras‎, ‎we mainly study lie-type higher‎ ‎derivations on operator algebras in the current work‎. ‎it is shown‎ ‎that every lie (triple-)higher derivation on some classical operator‎ ‎algebras is of standard form‎. ‎the definition of lie $n$-higher‎ ‎derivations on operator algebras and related pote...

Introduction: Wavefield imaging comprises a body of techniques used in medicine, nondestructive testing, and seismic exploration to reconstruct the inaccessible interior structure of a target. Migration [1] is the reconstruction of 3D internal reflecting boundaries, and it requires prior knowledge of the velocity distribution. Tomography [2] uses separate receivers or reflections from the known...

We adopt an operatorial method based on the so–called creation, annihilation and number operators in the description of different systems in which two populations interact and move in a two–dimensional region. In particular, we discuss diffusion processes modeled by a quadratic hamiltonian. This general procedure will be adopted, in particular, in the description of migration phenomena. With re...

Migration and quality of redistribution of population across country is one of the main factors that planners take into account to control population and guide its movements to economic poles. Scientific recognition of migration phenomenon is important for managing and policy making in the country. These movements change migration pattern, in a way that along with increase in population and the...