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Vaccination effect on a stochastic epidemic model with healing and relapse

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International Journal of Biomathematics 2024年第1期17卷 29-59页

作者： M.M.Abdeslami L.Basri M.El Fatini I.Sekkak R.Taki Laboratory of Partial Differential Equations Spectral Algebra and Geometry Department of Mathematics Faculty of Sciences Ibn Tofail UniversityBP 133KénitraMorocco Centre de Recherche en Sante Publique Montréal(Québec)H3N 1X9 Canada Departement de Medecine Sociale et Preventive Ecole de SantéPublique de I'Universitéde Montreal 101Avenue du ParcMontréal(Quebec)H3N 1X9Canada EST Sidi Bennour Chouaib Doukkali UniversityEl JadidaMorocco

In this work,we consider a stochastic epidemic model with vaccination,healing and *** prove the existence and the uniqueness of the positive *** establish sufficient conditions for the extinction and the persistence in mean of the stochastic ***,we also establish sufficient conditions for the existence of ergodic stationary distribution to the model,which reveals that the infectious disease will *** graphical illustrations of the approximate solutions of the stochastic epidemic model have been performed.

关键词： Stochastic epidemic model with relapse and healing vaccination extinction persistence in mean Markov semigroup stationary distribution

Diskcyclicity of Sets of Operators and Applications

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Acta Mathematica Sinica,English Series 2020年第11期36卷 1203-1220页

作者： Mohamed AMOUCH Otmane BENCHIHEB university chouaib doukkali Department of MathematicsFaculty of science EljadidaMorocco

In this paper,we introduce and study the diskcyclicity and disk transitivity of a set of *** establish a diskcyclicity criterion and give the relationship between this criterion and the *** applications,we study the diskcyclicty of Co-semigroups and C-regularized *** show that a diskcyclic Co-semigroup exists on a complex topological vector space X if and only if dim(X)=1 or dim(X)=∞and we prove that diskcyclicity and disk transitivity of C0-semigroups(resp C-regularized groups)are equivalent.

关键词： Hypercyclicity supercyclicity diskcyclicity C0-semigroups of operators C-regularizedgroups of operators

HYPERCYCLICITY, SUPERCYCLICITY AND GENERALIZED RAKOEVIC'S PROPERTY

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Acta Mathematica Scientia 2017年第2期37卷 503-510页

作者： Mohamed AMOUCH Youness FAOUZI Department of Mathematics university chouaib doukkali Faculty of Sciences Eljadida 24000 Eljadida Morocco

A Banach space operator satisfies generalized RakoSevi5＇s property （gw） if the complement of its upper semi B-Weyl spectrum in its approximate point spectrum is the set of eigenvalues of T which are isolated in the... 详细信息

关键词： Weyl's and ^-Weyl's theorems generalized Weyl's and generalized a^Weyl's theorems Browder's and a-Browder's theorems generalized Browder's and generalized a-Browder's hypercyclicity supercyclicity Rakocevic's property

Optimization techniques in deep convolutional neuronal networks applied to olive diseases classification

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Artificial Intelligence in Agriculture 2022年第1期6卷 77-89页

作者： El Mehdi Raouhi Mohamed Lachgar a Hamid Hrimech Ali Kartit LTI Laboratory ENSAChouaib Doukkali University of El JadidaEl JadidaMorocco LAMSAD Laboratory ENSAHassan First UniversityBerrechidMorocco

Plants diseases have a detrimental effect on the quality but also on the quantity of agricultural ***,the prediction of these diseases is proving the effect on crop quality and on reducing the risk of production ***,the detection of plant diseases-either with a naked eye or using traditional methods-is largely a cumbersome process in terms of time,availability and results with a high-risk *** present work introduces a depth study of various CNN architectures with different optimization algorithms carried out for olive disease detection using classification techniques that recommend the best model for constructing an effective disease *** study presents a dataset of 5571 olive leaf images collected manually on real conditions from different regions of Morocco,that also includes healthy class to detect olive ***,one of the goals of this research was to study the correlation effects between CNN architectures and optimization algorithms evaluated by the accuracy and other performance *** highest rate in trained models was 100%,while the highest rate in experiments without data augmentation was 92,59%.Another subject of this study is the influence of the optimization algorithms on neuronal network *** a result of the experiments carried out,the MobileNet architecture using Rmsprop algorithms outperformed the others combinations in terms of performance and efficiency of disease detector.

关键词： Convolutional neuronal networks(CNN) Classification Optimization Gradient descent Plant diseases Olive dataset diseases(ODD)

The paranthurid isopod crustacean Paranthura nigropunctata (Lucas, 1846)： first record from the Atlantic coast of Morocco

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Acta Oceanologica Sinica 2018年第10期37卷 190-194页

作者： BELATTMANIA Zahira CHAOUTI Abdellatif REANI Abdeltif MACHADO Margarida ENGELEN Aschwin H SERRAO Ester A SABOUR Brahim Department of Biology Faculty of Sciences Chouaib Doukkali University El Jadida 24000 Morocco CCMAR-Centre of Marine Sciences University of Algarve Gambelas Faro 8005-139 Portugal

The littoral paranthurid isopod crustacean Paranthura nigropunctata （Lucas, 1846） is recorded for the first time from the littoral of El Jadida located on the Atlantic northwest coast of Morocco. Specimens were obtained from the invasive brown seaweed Sargassum muticum and the natives Bifurcaria bifurcata and Cystoseira tamariscifolia in January 2015. This new record further confirms a significant southward distribution of P. nigropunctata and contributes to the knowledge of the biogeography of this isopod. Heretofore, the species was only known from the western and eastern Mediterranean and some Atlantic coasts. The present finding is the first of the species from Moroccan Atlantic shores, and suggests that the species may also be present in other coastal localities from Morocco and Africa. Some data on morphology, ecology and spatial distribution of the species are provided.

关键词： Paranthura nigropunctata Crustacea new report NE Atlantic Morocco

Evaluation of Landsat 8 image pansharpening in estimating soil organic matter using multiple linear regression and artificial neural networks

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Geo-Spatial Information Science 2022年第3期25卷 353-364页

作者： Abdelkrim Bouasria Khalid Ibno Namr Abdelmejid Rahimi El Mostafa Ettachfini Badr Rerhou Faculty of Sciences Chouaib Doukkali UniversityEl JadidaMorocco Agricultural Development Department Doukkala Regional Agricultural Development OfficeEl JadidaMorocco Soil Science Department Hassan II Agronomic and Veterinary InstituteRabatMorocco

In agricultural systems,the regular monitoring of Soil Organic Matter(SOM)dynamics is *** task is costly and time-consuming when using the conventional method,especially in a very fragmented area and with intensive agricultural activity,such as the area of Sidi *** study area is located in the Doukkala irrigated perimeter in *** data can provide an alternative and fill this gap at a low *** to predict SOM from a satellite image,whether linear or nonlinear,have shown considerable *** study aims to compare SOM prediction using Multiple Linear Regression(MLR)and Artificial Neural Networks(ANN).A total of 368 points were collected at a depth of 0-30 cm and analyzed in the *** image at 15 m resolution(MSPAN)was produced from a 30 m resolution(MS)Landsat-8 image using image pansharpening processing and panchromatic band(15 m).The results obtained show that the MLR models predicted the SOM with(training/validation)R^(2)values of 0.62/0.63 and 0.64/0.65 and RMSE values of 0.23/0.22 and 0.22/0.21 for the MS and MSPAN images,*** contrast,the ANN models predicted SOM with R2 values of 0.65/0.66 and 0.69/0.71 and RMSE values of 0.22/0.10 and 0.21/0.18 for the MS and MSPAN images,*** pansharpening improved the prediction accuracy by 2.60%and 4.30%and reduced the estimation error by 0.80%and 1.30%for the MLR and ANN models,respectively.

关键词： Digital soil mapping soil organic matter remote sensing multiple linear regression artificial neural networks irrigated area Doukkala Morocco

Fractional Order Modeling of Predicting COVID-19 with Isolation and Vaccination Strategies in Morocco

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Computer Modeling in Engineering & Sciences 2023年第8期136卷 1931-1950页

作者： Lakhlifa Sadek Otmane Sadek Hamad Talibi Alaoui Mohammed S.Abdo Kamal Shah Thabet Abdeljawad Laboratory of Engineering Sciences for Energy National School of Applied SciencesChouaib Doukkali UniversityEl Jadida10002Morocco Department of Mathematics Faculty of SciencesChouaib Doukkali UniversityEl Jadida10002Morocco Department of Mathematics Hodeidah UniversityAl-Hudaydah91911Yemen Department of Mathematics and Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia Department of Mathematics University of MalakandChakdara Dir(L)Khyber Pakhtankhawa18000Pakistan Department of Medical Research China Medical UniversityTaichung40402Taiwan

In this work,we present a model that uses the fractional order Caputo derivative for the novel Coronavirus disease 2019(COVID-19)with different hospitalization strategies for severe and mild cases and incorporate an awareness *** generalize the SEIR model of the spread of COVID-19 with a private focus on the transmissibility of people who are aware of the disease and follow preventative health measures and people who are ignorant of the disease and do not follow preventive health ***,individuals with severe,mild symptoms and asymptomatically infected are also *** basic reproduction number(R0)and local stability of the disease-free equilibrium(DFE)in terms of R0 are ***,the uniqueness and existence of the solution are *** simulations are performed by using some real values of ***,the immunization of a sample of aware susceptible individuals in the proposed model to forecast the effect of the vaccination is also ***,an investigation of the effect of public awareness on transmission dynamics is one of our aim in this ***,a prediction about the evolution of COVID-19 in 1000 days is *** the qualitative theory of the existence of a solution,we use some tools of nonlinear analysis,including Lipschitz ***,for the numerical interpretation,we use the Adams-Moulton-Bashforth *** the numerical results are presented graphically.

关键词： Fractional calculus caputo derivatives COVID-19 reproduction number future prediction

Thermal Analysis of Melting Occurring Inside a Finned Rectangular Enclosure Equipped with Discrete Pulsed Protruding Heat Sources

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Fluid Dynamics & Materials Processing 2022年第5期18卷 1539-1549页

作者： Brahim Amahan Hamid El Qarnia Ali El Afif Faculty of Sciences Department of PhysicsLaboratory of Innovation in Sciences Technology and ModelingChouaib Doukkali UniversityEl JadidaMorocco Faculty of Sciences Semlalia Fluid Mechanics and Energetic LaboratoryDepartment of PhysicsCadi Ayyad UniversityMarrakeshMorocco

This paper numerically investigates the effect of the location of a horizontal fin on the melting of a phase change material(PCM)inside a rectangular enclosure heated by multiple discrete pulsed protruding heat *** fin and the phase change material filling the enclosure store the thermal energy extracted from the heat sources,in sensible and latent *** heat sources are assumed to simulate electronic components undergoing a superheating technical *** extracting heat from the electronics,the PCM plays the role of a heat *** analyze the thermal behavior and predict the cooling performance of the proposed cooling system,we derive a nonlinear mathematical model based on mass,momentum and energy conservation *** numerical investigations are conducted to quantify the influence of the fin position on the thermal behavior and the cooling performance of the heat *** include the transient maximum temperature occurring inside the heat sources and the liquid volume.A comparison between our numerical results and experimental data selected from the literature shows a good *** main conclusion is that the presence of the fin leads to a slight increase in the melting time.

关键词： Phase change material melting heat transfer pulsed heating electronics cooling heat storage fin

On the Automorphism Group of Distinct Weight Codes

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Intelligent Information Management 2015年第2期7卷 80-92页

作者： Abdelfattah Haily Driss Harzalla Department of Mathematics Faculty of Sciences University Chouaib Doukkali El Jadida Morocco

In this work, we study binary linear distinct weight codes (DW-code). We give a complete classification of -DW-codes and enumerate their equivalence classes in terms of the number of solutions of specific Diophantine ... 详细信息

关键词： Distinct (Constante) Weigth Code Automorphism Group Extension Theorem of MacWilliams Diophantine Equations