Information technology
Investigation into Fiber Optic Seismic Sensor incorporating Fiber Bragg Grating Array

Riyam Alaa Johni; Kanar Roshen Tariq; Roshen Tariq Ahmadhamdi; David Iyan Forsyth

Volume 4, Issue 2 , December 2022, Pages 92-99

http://dx.doi.org/10.24271/psr.2022.318987.1111

Abstract
  This paper presents a theoretical investigation on a type of Fiber Optic Sensing system used for seismic monitoring which incorporates an array of Fiber Bragg Gratings (FBGs) in the sensing medium. An interferometry array contains a group of interferometry sub-arrays, every sub-array including a plurality ...  Read More

Physics
Design and Simulation of Rectangular Microstrip Patch Antennas (45 GHz and 60 GHz) for V-band Applications

Miran Hama Rahim Saeed

Volume 4, Issue 2 , December 2022, Pages 100-104

http://dx.doi.org/10.24271/psr.2022.333252.1124

Abstract
  In this article, two wideband microstrip rectangular patch antennas have been designed and simulated for V band communication systems at resonant frequencies 45 GHz and 60 GHz. Rogers RO4730G3 is used as substrate dielectric with dielectric constant 2.98. The dimensions of the antennas are 6.23mm*6.7mm*0.7mm ...  Read More

Mathematic
Modeling the effect of contaminated object, vaccination and treatment on the diseases epidemiology

Arkan Nawzad Mustafa; Hanaa Jamal Ahmad

Volume 4, Issue 2 , December 2022, Pages 105-112

http://dx.doi.org/10.24271/psr.2022.330125.1119

Abstract
  In this paper, the effect of contaminated object on an SIRS Model with vaccination and hospitalization compartments is modeled. Positivity and boundedness properties of the solutions of model are proved, basic reproduction number of the model is founded through criteria which make the eigen values of ...  Read More