This work presents an efficient procedure based on Chebychev spectral collocation method for computing the 2D Laplace’s equation on a rectangular domain. The numerical results and comparison of finite difference and finite element methods are presented. We obtained a satisfactory...
Open access
Research Article10.9734/psij/2019/v23i130144
The mathematical structure of quantum field theories of first order and of second order partial differential equations is analyzed. Relativistic properties of the Lagrangian density and the dimension of its elements are examined. The analysis is restricted to elementary massive p...
Open access
Research Article10.9734/psij/2019/v23i130143
The Cosmic Membrane theory states that the space in which the cosmic microwave background radiation has no dipole is identical with Newton’s absolute space. Light propagates in this space only. In contrast, in a moving inertial frame of reference light propagation is in-homogeneo...
Open access
Research Article10.9734/psij/2019/v23i130141
Based on the non-zero conductivity hypothesis of the interstellar space, an alternative cosmological model called “Knowledge spherocone“ is formulated. Its significant feature is the ultimate size of a scientifically recognizable universe. It also formulated the hypothesis of age...
Open access
Research Article10.9734/psij/2019/v23i130142
This paper presents the evaluation of propagation losses due to rain attenuated signal on terrestrial radio link. Rain rate data were measured using Davis weather station for the months of July, August and October 2017 at (9.9565° N, 8.8583° E; 1258 meters) Jos Plateau state of...
Open access
Research Article10.9734/psij/2019/v23i130140
The Seasonal Autoregressive Integrated Moving Average (SARIMA) model is proposed for Osun State monthly rainfall data and the analysis was based on probability time series modeling approach. The Plot of the original data shows that the time series is stationary and the Augmented...
Open access
Research Article10.9734/psij/2019/v22i430139
A semianalytical method to study the effects of the higher-order spectral filtering in the cubic-quintic complex Swift-Hohenberg equation (CSHE) through the dynamics of one soliton was applied. The approach is based on a reduction from an infinite-dimensional dynamical dissipativ...
Open access
Research Article10.9734/psij/2019/v22i430138
The aim of the present study is to determine the elemental concentration in (ppm) and specific activity in (Bqkg-1) of Uranium (238U) and Thorium (232Th) contained in the granite rock of a special geological area in Sudan (Kadugli). The elemental concentrations and specific activ...
Open access
Research Article10.9734/psij/2019/v22i430137
Aims: To analyze the results of measurements of the Boltzmann, gravitational and Planck constants using a theoretically sound information approach in comparison with the CODATA technique. Place and Duration of Study: Beer-Sheba, between January 2019 and May 2019. Methodology: Usi...
Open access
Research Article10.9734/psij/2019/v22i430136
The physics system that helps us in the study of this paper is a nonlinear hybrid electrical line with crosslink capacitor. Meaning it is composed of two different nonlinear hybrid parts Linked by capacitors with identical constant capacitance. We apply Kirchhoff laws to the circ...
Open access
Research Article10.9734/psij/2019/v22i430135