David Yemélé
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View article: Improvement of fuel economy and efficiency in a modified parallel hybrid electric vehicle architecture with wind turbine device: Effect of the external energy source
Improvement of fuel economy and efficiency in a modified parallel hybrid electric vehicle architecture with wind turbine device: Effect of the external energy source Open
This study investigates a novel hybrid electric vehicle architecture integrating a wind energy conversion system to transform part of kinetic energy of the vehicle into electrical energy to ensure real-time recharging of battery. Applicati…
View article: Stability and synchronization in neural network with delayed synaptic connections
Stability and synchronization in neural network with delayed synaptic connections Open
In this paper, we investigate the stability of the synchronous state in a complex network using the master stability function technique. We use the extended Hindmarsh–Rose neuronal model including time delayed electrical, chemical, and hyb…
View article: Polar compactons and solitons in a two dimensional optical waveguide: Theory and simulations
Polar compactons and solitons in a two dimensional optical waveguide: Theory and simulations Open
The propagation of optical cylindrical compactons and solitons in a two dimensional nonlocal nonlinear waveguide is deeply investigated by carrying a particular emphasis on its nonlinear response function. Considering the weakly nonlocal m…
View article: Propagation of the ordinary and extraordinary modulated optical pulses in a nonlinear Kerr-type birefringent optical waveguide: Analytical description
Propagation of the ordinary and extraordinary modulated optical pulses in a nonlinear Kerr-type birefringent optical waveguide: Analytical description Open
The purpose of this work is to describe theoretically the behavior of modulated pulses in nonlinear birefringent optical waveguides and particularly in the optical fibers, by taking into account the anisotropy of the medium as well as the …
View article: Modulated solitons and transverse stability in a two-dimensional nonlinear reaction diffusion electrical network
Modulated solitons and transverse stability in a two-dimensional nonlinear reaction diffusion electrical network Open
We investigate the propagation of modulated solitons in a two-dimensional (2D) nonlinear reaction diffusion electrical network with the intersite circuit elements (both in the propagation and transverse directions) acting as nonlinear resi…
View article: Effect of variation of the coefficient of friction on the temperature at the level of the fault lips
Effect of variation of the coefficient of friction on the temperature at the level of the fault lips Open
Earth’s crust is an anisotropic and purely heterogeneous medium, which is justified by existence of different discontinuities, our study aims to show the effect of the variation of coefficient of friction on the evolution of temperature an…
View article: Effect of variation of the coefficient of friction on the temperature at the level of the fault lips
Effect of variation of the coefficient of friction on the temperature at the level of the fault lips Open
Earth’s crust is an anisotropic and purely heterogeneous medium, which is justified by existence of different discontinuities, our study aims to show the effect of the variation of coefficient of friction on the evolution of temperature an…
View article: Effect of Variation of the Coefficient of Friction on the Temperature at the Level of the Fault Lips
Effect of Variation of the Coefficient of Friction on the Temperature at the Level of the Fault Lips Open
Earth’s crust is an anisotropic and purely heterogeneous medium, which is justified by existence of different discontinuities; our study aims to show the effect of the variation of coefficient of friction on the evolution of temperature an…
View article: Groundwater prospecting using remote sensing and geoelectrical methods in the North Cameroon (Central Africa) metamorphic formations
Groundwater prospecting using remote sensing and geoelectrical methods in the North Cameroon (Central Africa) metamorphic formations Open
View article: Signal Noise Ratio and Magnetic Density in Digital Magnetic Recording System: Analytical and Numerical Investigation
Signal Noise Ratio and Magnetic Density in Digital Magnetic Recording System: Analytical and Numerical Investigation Open
In this work the analysis of noise especially the transition jitter noise is used to evaluate the areal density which are consider as one of the most important characteristics in magnetic recording systems. This is possible through the ana…
View article: Soliton Domain Wall Concept: Analytical and Numerical Investigation in Digital Magnetic Recording System
Soliton Domain Wall Concept: Analytical and Numerical Investigation in Digital Magnetic Recording System Open
To introduce Soliton theory in magnetic recording systems, we begin with the profile of Domain Wall, which is key elements of recording systems, knowing that many different Domain Walls shape exist. For this, we consider the recording medi…
View article: INFLUENCE OF VISCOSITY ON THE THERMAL ENERGY PRODUCED IN SEISMIC FAULT: ONE-DIMENSIONAL MODELING
INFLUENCE OF VISCOSITY ON THE THERMAL ENERGY PRODUCED IN SEISMIC FAULT: ONE-DIMENSIONAL MODELING Open
This study is focused on thermal energy due to slip-weakening friction, but also on the temperature distribution. In this paper, we considered a one-body spring-slider model in the presence of slip-weakening friction and viscosity. We exam…
View article: DYNAMICS OF AN INTRA-HOST MODEL OF MALARIA WITH A CONSTANT DRUG EFFICIENCY
DYNAMICS OF AN INTRA-HOST MODEL OF MALARIA WITH A CONSTANT DRUG EFFICIENCY Open
In this paper, we investigate the dynamics of an intra-host model of malaria with logistic red blood growth, treatment and immune response. We provide a theoretical study of the model. We derive the basic reproduction number $\mathcal R_f$…
View article: Lineament characteristics using gravity data in the Garoua Zone, North Cameroon: Natural risks implications
Lineament characteristics using gravity data in the Garoua Zone, North Cameroon: Natural risks implications Open
The Garoua Zone in North Cameroon, the subject of this study, is known to have undergone tectonic movements during the Cretaceous, but the zone’s structural data remain poorly known. This study exploits the Bouguer anomaly to improve knowl…
View article: A discrete spherical harmonics method for radiative transfer analysis in inhomogeneous polarized planar atmosphere
A discrete spherical harmonics method for radiative transfer analysis in inhomogeneous polarized planar atmosphere Open
View article: One-dimensional modeling of thermal energy produced in a seismic fault
One-dimensional modeling of thermal energy produced in a seismic fault Open
Generally, one observes an anomaly of temperature before a big earthquake. In this paper, we established the expression of thermal energy produced by friction forces between the walls of a seismic fault while considering the dynamic of a o…
View article: Wind Energy Assessment at Bafoussam, Cameroon
Wind Energy Assessment at Bafoussam, Cameroon Open
Three-hourly wind speed data measured using the Beaufort scale at a height of 10m, from 6am to 6pm local time (5 periods per day), was obtained from the Bafoussam Airport. It was analyzed using the Weibull and Rayleigh probability density …
View article: Statistical wind speed studies and wind energy potential resource analysis of abong mbang, Cameroon: a case study
Statistical wind speed studies and wind energy potential resource analysis of abong mbang, Cameroon: a case study Open
Accurate analysis of wind characteristics for a particular site is the first step towards wind energy resource installation. In this study, the onus is to determine the wind energy potential characteristics, and the best representative pro…