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Modelling the monthly hydrological balance using soil and Water Assessment Tool(sWAT)model:A case study of the Wadi Mina upstream watershed

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Journal of Groundwater science and Engineering 2024年第2期12卷 161-177页

作者： Hanane Mebarki Noureddine Maref Mohammed el-Amine Dris Civil Engineering and Environmental Laboratory(LGCE) University of Djillali LiabèsFaculty of TechnologyHydraulics departmentBen M'Hidi districtP.O.Box 8922000Sidi Bel AbbèsAlgeria.

Modelling the hydrological balance in semi-arid zones is essential for effective water resource management,encompassing both surface water and *** study aims to model the monthly hydrological water cycle in the Wadi Mina upstream watershed(northwest Algeria)by applying the soil and Water Assessment Tool(sWAT)hydrological *** modelling integrates spatial data such as the Digital elevation Model(DEM),land use,soil types and various meteorological parameters including precipitation,maximum and minimum temperatures,relative humidity,solar radiation and wind *** sWAT model was calibrated and validated using data from January 2012 to December 2014,with a calibra-tion period from January 2012 to August 2013 and a validation period from september 2013 to December *** and parameter calibration were conducted using the sWAT-sA program,and model performance evaluation relied on comparing the observed discharge at the outlet of the basin with model-simulated discharge,assessed through statistical coefficients including Nash-sutcliffe Efficiency(NsE),coefficient of determination(R2)and Percent Bias(PBAIs).Calibration results indicated favourable objec-tive function values(NsE=0.79,R2=0.93,PBAIs=-8.53%),although a slight decrease was observed during validation(NsE=0.69,R2=0.86,and PBAIs=-11.41%).The application of the sWAT model to the Wadi Mina upstream watershed highlighted its utility in simulating the spatial distribution of different components of the hydrological balance in this *** sWAT model revealed that approximately 71%of the precipitation in the basin evaporates,while only 29%contributes to surface runoff or infiltration into the soil.

关键词： sWAT model Performance Parameters Runoff Groundwater Wadi

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systems Dynamics of sheep Farms and Driving Herds of Faces to the Vagaries of Weather: Cases from the Region of el Bayadh

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Agricultural sciences 2014年第7期5卷 583-587页

作者： Mekhloufi Moulay Brahim Mahari Latifa Mekhloufi Fadila faculty of science university el djilali liabès of sidi bel abbès Sidi Bel Abbes Algeria Institute of Agronomy university of Mascara Mascara Alge-ria

The cattlemen of the steppe are faced with climate risks whose consequences are at the origin of one of the essential mechanisms of the degradation of resources natural fodder, thus making uncertain the food of livestock. Thus, faces to the changing socio-economic and climatic risks, the pastoral society has implemented different adaptive strategies to ensure the reproduction of its operating systems. The objective of this study is to analyze the patterns of the use of the space of the pastoral area called el-Bayadh in order to show how the actors adopt and adapt the techniques of production available in order to ensure the security of the production of their exploitation in an environment particularly fragile, hostile and vulnerable. It is therefore to take knowledge of the basic strategies implementation and the responses provided by the livestock producers to protect themselves against the consequences of a difficult climate in order to ensure the conduct of the food needs of their animals and the reproduction of their operating system.

关键词： Breeding system Conduct of sheep Farming Climate

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study of the Convergence of the Increments of Gaussian Process

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Applied Mathematics 2015年第6期6卷 933-939页

作者： Abdelkader Bahram shaban A. el-shehawy Department of Mathematics Djillali Liabes University Sidi Bel Abbès Algeria Department of Mathematics Faculty of Science Menoufia University Shebin El-Kom Egypt

Let be a Gaussian process with stationary increments . Let be a nondecreasing function of t with . This paper aims to study the almost sure behaviour of where with and is an increasing sequence diverging to .

关键词： Wiener Process Gaussian Process Law of the Iterated Logarithm Regularly Varying Function

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Ground state parameters,electronic properties and elastic constants of CaMg3:DFT study

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Journal of Magnesium and Alloys 2020年第4期8卷 1166-1175页

作者： H.Rekab-Djabri Manal M.Abdus salam s.Daoud M.Drief Y.Guermit s.Louhibi-Fasla Laboratory of Micro and Nanophysics(LaMiN) National Polytechnic School OranENPO-MABP 1523El M'Naouer31000 OranAlgeria faculty of Nature and Life sciences and Earth sciences Akli Mohand-Oulhadj University10000 BouiraAlgeria Department of Applied Physics Tafila Technical UniversityTafila 66110Jordan Laboratory of Materials and electronic systems Mohamed El Bachir El Ibrahimi University of Bordj Bou ArreridjBordj BouArreridj 34000Algeria Laboratoire des Materiaux Magnetiques Departement de PhysiqueFaculte des SciencesUniversite Djilali LIABES de Sidi-Bel-AhbesSidi Bel Abbes 22000Algeria

The present study aims to investigate the equation of state(EOs)parameters of CaMg3 in aReCh(D09),AIFR(DO3),CU3A11(LI2)and CuTi3(L60)structures,using full potential linear muffin-tin orbitals(FP-LMTO)approach based on the density functional theory(DFT).The local density approximation(LDA)and the generalized gradient approximation(GGA)were both applied for the exchange-correlation potential *** calculated equation of slate parameters at equilibrium,in general,agreed well with the available data of the *** calculations showed that under compression CaMg3 transforms from DO3 to DO9 at about 29.96GPa,and 25.1 GPa using LDA and GGA,*** elastic constants C,y,aggregate moduli,Vickers hardness,sound velocity,and Debye temperature of CaMg3 in D03 structure were also reported,discussed and *** LDA(GGA),the calculated values of Hv andθD were found at around 5.80GPa(5.93GPa)and 393.44 K(389.91 K),*** band structure,total density of states(TDOs)as well as the partial density of states(PDOs)have been also *** electronic band structure confirms the metallic behavior of CaMg3 in DO3 phase,the valence bands are dominated by the maximum contribution of‘d’like states of Ca in the energy ranging from 2 to 3 eV for GGA,and from 4.5 to 5 eV for LDA,respectively.

关键词： CaMg3 compound electronic properties Phase transition elastic constants FP-LMTO

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Numerical simulation of Marine Vehicle Immersed in Water

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Journal of Marine science and Application 2019年第3期18卷 282-294页

作者： Benamar Derrar Benameur Hamoudi Mohammed el-Amine Dris Fethi saidi Aerohydrodynamic Laboratory Department of Maritime EngineeringFaculty of Mechanical EngineeringUniversity of Sciences and Technology of Oran Mohamed BoudiafBir El DjirBP 150531000 El’MnaouerOranAlgeria Department of Hydraulics University Djillali Liabes of Sidi Bel-Abbes22000 Sidi Bel AbbèsAlgeria

This article presents a numerical study of the forces induced by hydrodynamic impact, that is, the impact of a part of the bottom of the hull on the water surface. The prediction of these efforts is often based on numerical simulations to determine the shock intensity of a structure on the surface of a weakly compressible fluid (for example, water). The short duration of the impact is also investigated in this work. This phenomenon occurs especially when a ship encounters a harsh and difficult sea conditions. Under such conditions, it is important to know how to predict the hydrodynamic forces applied to the structure to correctly optimize the ship elements during its design stage or to prevent possible damage. Indeed, various factors such as speed of the ship and height of the swell can cause the hull to partially emerge and then fall violently onto the water surface, which is referred to by naval personnel as tossing or slamming causing vibrations, stresses, and fatigue to the structural elements of the ship. In this work, we present an example of phenomenon modeling and then a numerical study of the different geometries (dihedron) that play a role in different sections of the bow. Then, we compare our present results with the theoretical and experimental results of other researchers in the field. The average interval impact time for a dihedral model corresponding to the section of the chosen ship and other experimental and theoretical data is in good agreement with the experimental and theoretical measurements.

关键词： slamming Hydrodynamic impact Aero-hydro-elastic Dihedral Fluid/structure interaction Marine vehicle

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