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Exploring Capillary Fringe Flow:Quasilinear Modeling with Kirchhoff Transforms and Gardner Model

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Fluid Dynamics & Materials Processing 2024年第7期20卷 1611-1631页

作者： rachid Karra Abdelatif Maslouhi LASTIMI Laboratory Mohammadia School of EngineersMohammed V University in RabatRabatMorocco LIRNE Laboratory Faculty of SciencesIbn Tofail UniversityKenitraMorocco

Recent studies have underscored the significance of the capillary fringe in hydrological and biochemical ***,its role in shallow waters is expected to be ***,the study of groundwater flow has centered on unsaturated-saturated zones,often overlooking the impact of the capillary *** this study,we introduce a steady-state two-dimensional model that integrates the capillary fringe into a 2-D numerical *** novel approach employs the potential form of the Richards equation,facilitating the determination of boundaries,pressures,and velocities across different ground surface *** utilized a two-dimensional Freefem++finite element model to compute the stationary *** validation of the model was conducted using experimental *** employed the OFAT(One_Factor-At-Time)method to identify the most sensitive soil parameters and understand how changes in these parameters may affect the behavior and water dynamics of the capillary *** results emphasize the role of hydraulic conductivity as a key parameter influencing capillary fringe shape and *** values within the capillary fringe suggest the prevalence of horizontal *** variation of the water table level and the incoming flow q0,we have shown the correlation between water table elevation and the upper limit of the capillary fringe.

关键词： Capillary fringe Freefem++ gardner model modeling porous media

Existence and numerical approximation of a solution to frictional contact problem for electro-elastic materials

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Applied Mathematics(A Journal of Chinese Universities) 2024年第2期39卷 201-219页

作者： Othman Baiz EL-Hassan Benkhira rachid Fakhar University Ibn Zohr Lab.ESERFP of OuarzazateMorocco University Moulay Ismail Faculty of SciencesLaboratory MACSESTMBP 3103Toulal-MeknesMorocco University Sultan Moulay Slimane Laboratory LS2MEPolydisciplary Faculty of Khouribga25000 KhouribgaMorocco

In this paper,a frictional contact problem between an electro-elastic body and an electrically conductive foundation is *** contact is modeled by normal compliance with finite penetration and a version of Coulomb’s law of dry friction in which the coefficient of friction depends on the *** addition,the effects of the electrical conductivity of the foundation are taken into *** model leads to a coupled system of the quasi-variational inequality of the elliptic type for the displacement and the nonlinear variational equation for the electric *** existence of a weak solution is proved by using an abstract result for elliptic variational inequalities and a fixed point ***,a finite element approximation of the problem is *** some regularity conditions,an optimal order error estimate of the approximate solution is ***,a successive iteration technique is used to solve the problem numerically and a convergence result is established.

关键词： piezoelectric material frictional contact variational Inequality fixed point process finite element method error estimation iteration method

Contested Narratives:The Poetics of Home in Susan Muaddi Darraj's The Inheritance of Exile and Angela Tehaan Leon's Swimming Towardthe Light

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Fudan Journal of the Humanities and Social Sciences 2024年第3期17卷 507-525页

作者： rachid Lamghari Sidi Mohamed Ben Abdellah University FezMorocco

Home and its meanings and significance have received extensive examination within the disciplines of anthropology,psychology,sociology,philosophy,human geogra-phy,and ***,which contains various references to houses,countries,and states,can no longer be considered a homogenized experience for migrants,as it takes shapes as a result of interaction between the past and present,the local and global,and the diaspora and country of *** on diaspora studies and its theorizations of home,this article examines the heterogeneous and pluralistic nego-tiations of home in Susan Muaddi Darraj's The Inheritance of Exile and Angela Tehaan Leon's Swimming Toward the Light,and argues that the conventional under-standing of home as a fixed location tied solely to one's country of origin is *** first generation of Arab migrant women,as depicted in the novels,finds a sense of belonging in the familiar spaces and customs of their native countries,hence viewing them as their true *** contrast,the second generation views home in a more multifaceted *** see it not only as a physical space but also as a source of spiritual *** analysis confirms that home can no longer be said to apply simply to a geographic place,site,or even to a certain culture or set of practices as it is interpreted differently and incarnated in multitudinous *** diversified meanings of home render it pliable and confirm its controversial and debatable nature,especially for subjects in transit.

关键词： Migrant narratives Home Diaspora Homeland Belonging

Impact of Varying Blower Opening Degrees on Indoor Environment and Thermal Comfort

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Fluid Dynamics & Materials Processing 2024年第8期20卷 1703-1716页

作者： Shengqiang Shi Abdelatif Merabtine rachid Bennacer Julien Kauffmann UR LASMIS Universitéde Technologie de Troyes12 Rue Marie CurieTroyes10300France EPF Campus de Troyes Rosière-prés-Troyes10430France Construction Engineering Department École de Technologie Supérieure(ÉTS)University of Québec1100 Rue Notre-Dame OuestMontrealQC H3C 1K3Canada LMT/ENS-Paris-Saclay/CNRS UniversitéParis SaclayGif-sur-Yvette91190France

At present,air handling units are usually used indoors to improve the indoor environment ***,while introducing fresh air to improve air quality,air velocity has a certain impact on the occupants’thermal ***,it is necessary to explore the optimization of air-fluid-body interaction *** this study,the indoor air flow was changed by changing the opening and closing degree of the blower,and the thermal manikin is introduced to objectively evaluate the human thermal comfort under different air *** main experimental results show that the air change rate increases with the increase of the opening and closing degree of the blower considering an ACH(air changes per hour)range between 3.8 and *** a better prediction,a linear correlation with a coefficient of 0.995 is *** the blower’s opening is adjusted to 20%,25%,30%,35%,and 40%,the air velocity sensor positioned directly beneath the air inlet records average velocities of 0.19,0.20,0.21,0.28,and 0.34 m/s over four hours,*** on thermal comfort and the average sensation experienced by individuals indicate an initial increase followed by a decline when the blower’s operation begins,with optimal conditions achieved at a 35%*** findings offer valuable insights for future indoor air ventilation and heat transfer design strategies.

关键词： Air handle unit air velocity thermal comfort thermal sensation

Optimizing solar energy efficiency with an improved hill-climbing maximum power point tracking control approach: hardware implementation

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Clean Energy 2024年第5期8卷 167-176页

作者： Yassine El Alami Elmostafa Chetouani Hamza Mokhliss Fatima Ouerradi Mohssin Aoutoul Said Bounouar rachid Bendaoud Ahmed Faize Redouane Rmaily Laboratory of Electronics Instrumentation and EnergeticFaculty of SciencesChouaïb Doukkali UniversityB.P 20El JadidaMorocco Laboratory ElectronicsInstrumentation and EnergyExploitation and Processing of Renewable EnergyDepartment of PhysicsFaculty of SciencesUniversity of Chouaïb DoukkaliEl JadidaMorocco STIC Lab. Department of PhysicsChouaïb Doukkali UniversityEl JadidaMorocco Complex Cyber Physical Systems Laboratory National Higher School of Arts and CraftsHassan II UniversityCasablancaMorocco Interdisciplinary Laboratory for Research in Science Educationand TrainingHigher School of Education and Training-BerrechidHassan First UniversityBerrechidMorocco Department of Physics Polydisciplinary FacultyUniversity of Mohamed PremierNadorMorocco

This article implements maximum power point tracking(MPPT)based on the improved hill-climbing algorithm for photovoltaic(PV)systems feeding resistive loads.A direct current-to-direct current boost converter is inserted between the PV system and the load to achieve *** converter is managed using MPPT based on the hill-climbing *** objective of this paper is to optimize the code program to achieve the best compromise between accuracy and rapidity by implementing this algorithm using a *** PV systems are tested under identical meteorological *** the first,an improved hill-climbing MPPT controller is used whereas,in the second,the conventional version is *** experimental results obtained show a signifi-cant enhancement in terms of speed for the improved algorithm with a value of 0.4 s for the response time and 3%for the oscillation power;those values remain satisfactory in terms of precision of the algorithm compared with the conventional system studied and the compared algorithm from the literature.

关键词： DC/DC boost converter hardware implementation improved hill climbing MPPT photovoltaic system

Performance Evaluation of an Evaporative Cooling Pad for Humidification-Dehumidification Desalination

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Fluid Dynamics & Materials Processing 2024年第10期20卷 2323-2335页

作者： Ibtissam El Aouni Hicham Labrim Elhoussaine Ouabida Ahmed Ait Errouhi rachid El Bouayadi Driss Zejli Aouatif Saad Advanced Systems Engineering Laboratory National School of Applied SciencesIbn Tofail UniversityKenitra14000Morocco

The perfect combination of renewable energy and desalination technologies is the key to meeting water demands in a cost-effective,efficient and environmentally friendly *** desalination technique by humidificationdehumidification is non-conventional approach suitable for areas with low infrastructure(such as rural and decentralized regions)since it does not require permanent *** this study,this technology is implemented by using solar energy as a source of thermal power.A seawater desalination unit is considered,which consists of a chamber with two evaporators(humidifiers),a wetted porous material made of a corrugated cellulose cardboard and a condenser(dehumidifier).The evaporation system is tested with dry bulb temperature and relative air humidity *** results of numerical simulations indicate that higher inlet air velocities(from 0.75 to 3 m/s)lead to a decrease in theΔT,ΔRH,and *** the air remaining within the evaporator for 30 cm,the temperature differential increases to 5.7°C,accompanied by a 39%rise in relative humidity *** changes result in a significant enhancement in humidification efficiency,achieving a remarkable efficiency level of 78%.However,a wettability value of 630 m^(2)/m^(3)leads to a smaller reduction of these *** the pad thickness,particularly to 0.3 m,improves performance by boostingΔT,ΔRH,and effectiveness,especially for pads with a wettability of 630 m^(2)/m^(3),for which superior performances are predicted by the numerical tests.

关键词： Desalination humidification dehumidification porous material solar energy evaporator

Perspectives and Experiences of Education Stakeholders: A Quantitative Study on the Adoption of Artificial Intelligence in Executive Training Using Structural Equation Modeling

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Intelligent Information Management 2024年第2期16卷 104-120页

作者： El Mostafa Atoubi rachid Jahidi Regional Center for Education and Training Professions (CRMEF) Casablanca Morocco ENCG Settat Hassan 1st University Settat Morocco

The recent increase in the use of artificial intelligence has led to fundamental changes in the development of training and teaching methods for executive education. However, the success of artificial intelligence in regional centers for teaching and training professions will depend on the acceptance of this technology by young executive trainees. This article discusses the potential benefits of adopting AI in executive training institutions in Morocco, specifically focusing on CRMEF Casablanca Settat. Based on the Unified Theory of Acceptance and Use of Technology (UTAUT) (Venkatesh et al., 2003), this study proposes a model to identify the factors influencing the acceptance of artificial intelligence in regional centers for teaching professions and training in Morocco. To achieve this, a structural equation modeling approach was used to quantitatively describe the impact of each factor on AI adoption, utilizing data collected from 173 young executive trainees. The results indicate that perceived ease of use, perceived usefulness, trainer influence, and personal innovativeness influence the intention to use artificial intelligence. Our research provides managers of CRMEFs with a set of practical recommendations to enhance the implementation conditions of an artificial intelligence system. It aims to understand which factors should be considered in designing an artificial intelligence system within regional centers for teaching professions and training (CRMEFs).

关键词： Artificial Intelligence Technology Acceptance Intention to Use UTAUT Model Personal Innovativeness of Young Executive Trainees

Metastatic clear cell sarcoma of the pancreas:An overview

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World Journal of Clinical Cases 2024年第29期12卷 6262-6265页

作者： rachid Ait Addi Department of Biology Independent Senior ResearcherMarrakesh 41020Morocco

Clear cell sarcoma(CCS)is a rare soft-tissue sarcoma that accounts for less than 1%of all cases and was originally reported in *** incidence of CCS is estimated to be approximately 0.014/100000 depending on the surveillance,epidemiology and end results *** is a highly invasive type that mainly metastasizes to the lungs,followed by the bones and brain;however,pancreatic metastasis is relatively *** has a high probability of recurrence or metastasis and has a poor prognosis with a high mortality ***,even after recovery,it is fundamental to keep regular postoperative follow-up for CCS patients.

关键词： Clear cell sarcoma Pancreas Metastasis Follow-up Case report

Effect of No Tillage and Conventional Tillage on Wheat Grain Yield Variability: A Review

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Journal of Environmental & Earth Sciences 2024年第1期6卷 57-70页

作者： Kenza Kadiri Hassani Moussadek rachid Baghdad Bouamar Zouahri Abdelmjid Dakak Houria Maher Hassnae Bouabdli Abdelhak Laboratory of Geosciences Department of GeologyFaculty of SciencesIbn Tofail UniversityKenitra B.P.242Morocco International Center for Agricultural Research in the Dry Areas(ICARDA) Rabat P.O.Box 1014Morocco Research Unit on Environment and Conservation of Natural Resources Regional Center of RabatNational Institute of Agricultural ResearchRabat P.O.Box 6356Morocco Georesources Environmentalist Consultant/Expert Associate Professor at Casablanca School of Architecture and Landscape-Honoris United UniversitiesCasablancaB.P.20100Morocco Laboratory of Materials Nanotechnology and EnvironmentDepartment of ChemistryFaculty of SciencesMohammed V UniversityRabat B.P.703Morocco

Conservation Agriculture(CA)covers more than 205 million hectares in the *** made it possible to face and mitigate the challenges of climate change,reducing soil erosion and providing multiple ecosystem *** first elementary factor influenced is the yield *** has a direct effect on farmers’choices for sustainable *** present article records a review focused on wheat yield average positive change compared between conventional tillage(CT)and no tillage(NT)*** international database collected showed that NT is adaptable *** results of wheat yield differentiation showed the influence of crop rotation depending on stations located in different climatic *** more than 40 years of research,specialists have succeeded in demonstrating the importance of crop productivity like *** whole integrates also experimentations where the initiation starts more than ten years.

关键词： Climate change No tillage Crop rotation Wheat Yield