Asian Journal of Current Engineering and Maths

In this paper we have studied on a 4G Technology. This paper also investigates the technology used in 4g and the different application of 4G.  we have also made a comparison between 4G and  3G by which we will clearly understand  the difference between 3G and 4G And ,also we can understand that in   what ways  the  4G is advance version or better than 3G in many areas.. It also explains 4G’s fast and high data rate, and simplified data communications

In this paper, we introduce a class of sets, namely semi*-generalized closed sets. We give characterizations for semi*g-closed sets. We define the semi*-T_1/2 spaces and semi*g-closure operator using semi*-generalized closed sets. Further we investigate fundamental properties of semi*-generalized closed sets.

MSC 2010:54A05

There are many elastoviscous fluids that can be characterised neither by Maxwell’s constitutive relations nor by Oldroyd’s constitutive relations. One such class of viscoelastic fluids is the Rivlin– Ericksen’s fluid. RIVLIN and ERICKSEN] have proposed a theoretical model for such viscoelastic fluid. The behaviour of surface waves propagating between two Rivlin–Ericksen elastico-viscous fluids is examined. The investigation is made in the presence of a vertical electric field and a relative horizontal constant velocity. The influence of both surface tension and gravity force is taken into account. Due to the inclusion of streaming flow a mathematical simplification is considered. The viscoelastic contribution is demonstrated in the boundary conditions. From this point of view the approximation equations of motion are solved in the absence of viscoelastic effects. The solutions of the linearized equations of motion under nonlinear boundary conditions lead to derivation of a nonlinear equation governing the interfacial displacement and having damping terms with complex coefficients.

In this study, effects of Hall current and rotation on an electrically conducting rarefied gas are investigated. A constant, strong magnetic field is applied at an angle to both the electric field and the direction of flow of the fluid. The study seeks to find the effects of Hall current and angle of application of the magnetic field on velocity and temperature profiles. The flow of the gas is considered as unsteady and restricted to laminar domain. The set of equations which describe the flow are a combination of the Navier-Stokes equations of fluid dynamics, generalized Ohm’s law, Maxwell’s equations, equation of continuity and equation of energy. These equations are solved numerically using the finite difference method. Numerical results of velocity and temperature profiles are analyzed using tables and graphs for Hall current parameters m* ranging from 0.0 to 1.0 and parameter  for angle of application of the magnetic field ranging from 0.0 to 1.0.

 Mathematics Subject Classification:

The concepts of  p-continuity  between topological spaces are introduced by  Thangavelu and Rao.  The purpose of this paper is to introduce upper and lower p-continuous multifunctions  and  investigate their relationships with other multifunctions.

The aim of this paper is to introduce a class of closed sets called (1,2)*-R*-closed sets and its corresponding open sets in bitopological spaces .The properties of these sets are investigated. Further we define and study (1,2)*-R*-continuous and (1,2)*-R*-irresolute maps in bitopological spaces and some of their properties have been included.

Mathematical subject classification 2000:54E55

The notions of intuitionistic fuzzy sub implicative – ideals and intuitionistic fuzzy sub commutative – ideals in BCI-algebras are introduced. The characterization properties of intuitionistic fuzzy sub implicative – ideals and intuitionistic fuzzy sub commutative – ideals are obtained. Moreover we investigate the relations between intuitionistic fuzzy sub implicative – ideals and intuitionistic fuzzy sub commutative – ideals, between intuitionistic fuzzy sub implicative – ideals and BCI- algebras.

 

2000 Mathematics Subject classification: 06F35, 03G25, 03E72.