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Data-Driven Models for Predicting Solar radiation in Semi-Arid regions

Computers, Materials & Continua 2023年第1期74卷 1625-1640页

作者： Mehdi Jamei Nadjem Bailek Kada Bouchouicha Muhammed A.Hassan Ahmed Elbeltagi Alban Kuriqi Nadhir Al-Ansar Javier Almorox El-Sayed M.El-kenawy Engineering Faculty Shohadaye Hoveizeh Campus of TechnologyShahid Chamran University of AhvazDashte AzadeganIran Energies and Materials research Laboratory Department of Matter SciencesFaculty of Sciences and TechnologyUniversity of TamanghassetTamanghassetAlgeria Unitéde recherche en Energies renouvelables en Milieu Saharien(UrErMS) Centre de Développement des Energies Renouvelables(CDER)01000AdrarAlgeria Mechanical Power Engineering department Faculty of EngineeringCairo UniversityGiza12613GizaEgypt Agricultural Engineering department Faculty of AgricultureMansoura UniversityMansoura35516Egypt CErIS Instituto Superior TécnicoUniversidade de LisboaLisbonPortugal department of Civil Environmental and Natural Resources EngineeringLulea University of Technology97187LuleaSweden Universidad Politécnica de Madrid UPMAvd.Puerta de Hierro28040MadridSpain department of communications and Electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt

Solar energy represents one of themost important renewable energy sources contributing to the energy transition *** that the observation of daily global solar radiation(GSr)is not affordable in some parts of the globe,there is an imperative need to develop alternative ways to predict ***,the main objective of this study is to evaluate the performance of different hybrid data-driven techniques in predicting daily GSr in semi-arid regions,such as the majority of Spanish ***,four ensemble-based hybrid models were developed by hybridizing Additive regression(Ar)with random Forest(rF),Locally Weighted Linear regression(LWLr),random Subspace(rS),and *** base algorithms of the developed models are scarcely applied in previous studies to predict solar *** testing phase outcomes demonstrated that the ArrF models outperform all other hybrid *** provided models were validated by statisticalmetrics,such as the correlation coefficient(r)and root mean square error(rMSE).The results proved that Scenario#6,utilizing extraterrestrial solar radiation,relative humidity,wind speed,and mean,maximum,and minimum ambient air temperatures as the model inputs,leads to the most accurate predictions among all scenarios(r=0.968–0.988 and rMSE=1.274–1.403 MJ/m^(2)・d).Also,Scenario#3 stood in the next rank of accuracy for predicting the solar radiation in both validating *** AD-rF model was the best predictive,followed by AD-rS and ***,this study recommends new effective methods to predict GSr in semiarid regions.

关键词： Solar radiation prediction random forest locally-weighted linear regression additive regression

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Error Estimates of Some Numerical Atomic Orbitals in Molecular Simulations

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communications in Computational Physics 2015年第6期18卷 125-146页

作者： Huajie Chen reinhold Schneider Zentrum Mathematik Technische Universitat MunchenBoltzmannstraße 385747 GarchingGermany Institut fur Mathematik Technische Universitat BerlinStraße des 17.Juni 136D-10623 BerlinGermany

Numerical atomic orbitals have been successfully used in molecular simulations as a basis set,which provides a nature,physical description of the electronic states and is suitable for ■(N)calculations based on the strictly localized *** paper presents a numerical analysis for some simplified atomic orbitals,with polynomial-type and confined Hydrogen-like radial basis functions *** give some a priori error estimates to understand why numerical atomic orbitals are computationally efficient in electronic structure calculations.

关键词： Kohn-Sham density functional theory numerical atomic orbitals Slater-type orbitals a priori error estimate

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Editorial

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Intelligent and Converged Networks 2022年第1期3卷 I0001-I0003页

作者： Linglong Dai Chan-Byoung Chae Shi Jin Marco Di renzo rui Zhang Beijing National research Center for Information Science and Technology(BNrist)and the department of Electronic Engineering Tsinghua UniversityBeijing 100084China School of Integrated Technology Yonsei Institute of Convergence TechnologyYonsei UniversityIncheon 406-840Republic of Korea. National Mobile communications research Laboratory Southeast UniversityNanjing 210096China. the UniversitéParis-Saclay CNRSCentraleSupélecLaboratoire des Signaux et Systèmes3 Rue Joliot-Curie91192 Gif-sur-YvetteFrance. department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore

reconfigurable Intelligent Surface(rIS),also known as intelligent reflecting surface or large intelligent surface,is an emerging new physical-layer technology in the field of wireless *** basic idea of rIS is to deploy a reconfigurable passive array in the environment to manipulate the propagation of electron-magnetic *** promises a new design paradigm for wireless communications,where the wireless propagation environment can be dynamically controlled,which is substantially different from the conventional design that focuses only on the transmitter and *** rIS-aided wireless communications,some of the current methodologies in conventional communication systems need to be revised,and some novel solutions are required to realize the potential benefits of the *** the number of publications about rIS has recently sharply increased,there are still many challenging issues to be extensively investigated,such as the rIS channel modeling,fundamental performance limits,the system design,joint optimization of the rIS and the transceivers,channel state information acquisition,and interdisciplinary applications.

关键词： passive sharply revised

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A review of Transparent and Artificial Boundary Conditions Techniques for Linear and Nonlinear Schrodinger Equations

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communications in Computational Physics 2008年第9期4卷 729-796页

作者： Xavier Antoine Anton Arnold Christophe Besse Matthias Ehrhardt Achim Schadle Institut Elie Cartan Nancy(IECN) Universite Henri Poincare Nancy 1UMR 7502INRIA CoridaNancy-UniversiteFrance. Institut fur Analysis und Scientific Computing Technische Universitat WienWiedner Hauptstr.81040 WienAustria. Project-Team SIMPAF INrIA Lille Nord Europe research Centre Laboratoire Paul Painleve U.M.R CNRS 8524 Universite des Sciences et Technologies de LilleFrance. Weierstrass Institute for Applied Analysis and Stochastics Mohrenstr.3910117 BerlinGermany. Zuse-Institut Berlin Takustrasse 714195 BerlinGermany.

In this review article we discuss different techniques to solve numerically the time-dependent Schrodinger equation on unbounded *** present in detail the most recent approaches and describe briefly alternative ideas pointing out the relations between these *** conclude with several numerical examples from different application areas to compare the presented *** mainly focus on the one-dimensional problem but also touch upon the situation in two space dimensions and the cubic nonlinear case.

关键词： Schrodinger equation transparent boundary conditions discrete convolution unbounded domain finite difference schemes finite elements

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AnAll-regime Lagrange-Projection Like Scheme for the Gas Dynamics Equations on Unstructured Meshes

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communications in Computational Physics 2016年第6期20卷 188-233页

作者： Christophe Chalons Mathieu Girardin Samuel Kokh LMV-UMr 8100 Univ.Versailles Saint-Quentin-en-YvelinesUFR des SciencesBatiment Fermat45 avenue des Etats-Unis78035 Versailles cedexFrance deN/DANS/DM2S/STMF/LMEC CEA Saclay bat.454 PC 4791191 Gif sur Yvette CedexFrance LrC MANON Laboratoire de Recherche Conventionne CEA/DEN/DANS/DM2S and UPMC-CNRS/LJLL Maison de la Simulation USr 3441 Digiteo Labsbat.565PC 190CEA Saclay91191 Gif-sur-YvetteFrance deN/DANS/DM2S/STMF CEA Saclay91191 Gif-sur-YvetteFrance

We propose an all regime Lagrange-Projection like numerical scheme for the gas dynamics *** all regime,we mean that the numerical scheme is able to compute accurate approximate solutions with an under-resolved discretization with respect to the Mach number M,*** that the ratio between the Mach number M and the mesh size or the time step is small with respect to *** key idea is to decouple acoustic and transport phenomenon and then alter the numerical flux in the acoustic approximation to obtain a uniform truncation error in term of *** modified scheme is conservative and endowed with good stability properties with respect to the positivity of the density and the internal energy.A discrete entropy inequality under a condition on the modification is obtained thanks to a reinterpretation of the modified scheme in the Harten Lax and van Leer formalism.A natural extension to multi-dimensional problems discretized over unstructured mesh is *** a simple and efficient semi implicit scheme is also *** resulting scheme is stable under a CFL condition driven by the(slow)material waves and not by the(fast)acoustic waves and so verifies the all regime *** evidences are proposed and show the ability of the scheme to deal with tests where the flow regime may vary from low to high Mach values.

关键词： Gas dynamics equations low-Mach regime finite volume schemes all-regime schemes Lagrange-Projection like schemes large time-steps

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Hybrid High‑Order Methods for the Acoustic Wave Equation in the Time Domain

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communications on Applied Mathematics and Computation 2022年第2期4卷 597-633页

作者： Erik Burman Omar Duran Alexandre Ern department of Mathematics University College LondonLondon WC1E 6BTUK CErMICS Ecole des Ponts77455 Marne la Vallée Cedex 2France INrIA Paris 75589 ParisFrance

We devise hybrid high-order(HHO)methods for the acoustic wave equation in the time *** frst consider the second-order formulation in *** the Newmark scheme for the temporal discretization,we show that the resulting HHO-Newmark scheme is energy-conservative,and this scheme is also amenable to static condensation at each time *** then consider the formulation of the acoustic wave equation as a frst-order system together with singly-diagonally implicit and explicit runge-Kutta(SDIrK and ErK)***-SDIrK schemes are amenable to static condensation at each time *** HHO-ErK schemes,the use of the mixed-order formulation,where the polynomial degree of the cell unknowns is one order higher than that of the face unknowns,is key to beneft from the explicit structure of the *** results on test cases with analytical solutions show that the methods can deliver optimal convergence rates for smooth solutions of order O(hk+1)in the H1-norm and of order O(h^(k+2))in the L^(2)-***,test cases on wave propagation in heterogeneous media indicate the benefts of using high-order methods.

关键词： Hybrid high-order methods Wave equation Newmark scheme runge-Kutta scheme

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Improve Data Quality by Processing Null Values and Semantic dependencies

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Journal of Computer and communications 2016年第5期4卷 78-85页

作者： Houda Zaidi Faouzi Boufarès Yann Pollet Laboratory CEDrIC Conservatoire National des Arts et Métiers Paris France Laboratory rIADI University Manouba Tunis Tunisia Laboratory LIPN University Paris 13 Sorbonne Paris Cité Villetaneuse France

Today, the quantity of data continues to increase, furthermore, the data are heterogeneous, from multiple sources (structured, semi-structured and unstructured) and with different levels of quality. Therefore, it is very likely to manipulate data without knowledge about their structures and their semantics. In fact, the meta-data may be insufficient or totally absent. Data Anomalies may be due to the poverty of their semantic descriptions, or even the absence of their description. In this paper, we propose an approach to better understand the semantics and the structure of the data. Our approach helps to correct automatically the intra-column anomalies and the inter-col- umns ones. We aim to improve the quality of data by processing the null values and the semantic dependencies between columns.

关键词： Data Quality Big Data Contextual Semantics Semantic dependencies Functional dependencies Null Values Data Cleaning

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Hybrid Ensemble-Learning Approach for renewable Energy resources Evaluation in Algeria

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Computers, Materials & Continua 2022年第6期71卷 5837-5854页

作者： El-Sayed M.El-Kenawy Abdelhameed Ibrahim Nadjem Bailek Kada Bouchouicha Muhammed A.Hassan Basharat Jamil Nadhir Al-Ansari department of communications and Electronics Delta Higher Institute of Engineering and TechnologyMansouraEgypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura 35712Egypt Computer Engineering and Control Systems department Faculty of EngineeringMansoura UniversityMansouraEgypt Energies and Materials research Laboratory Faculty of Sciences and TechnologyUniversity of Tamanghasset10034TamanghassetAlgeria UrErMS Centre de Developpement des Energies Renouvelables(CDER)01000AdrarAlgeria Mechanical Power Engineering department Faculty of EngineeringCairo UniversityGiza12613GizaEgypt department Computer Sciences Universidad Rey Juan CarlosMostoles28933MadridSpain department of Civil Environmental and Natural Resources EngineeringLulea University of Technology97187LuleaSweden

In order to achieve a highly accurate estimation of solar energy resource potential,a novel hybrid ensemble-learning approach,hybridizing Advanced Squirrel-Search Optimization Algorithm(ASSOA)and support vector regression,is utilized to estimate the hourly tilted solar irradiation for selected arid regions in ***-term measured meteorological data,including mean-air temperature,relative humidity,wind speed,alongside global horizontal irradiation and extra-terrestrial horizontal irradiance,were obtained for the two cities of Tamanrasset-and-Adrar for two *** computational algorithms were considered and analyzed for the suitability of *** two new algorithms,namely Average Ensemble and Ensemble using support vector regression were developed using the hybridization *** accuracy of the developed models was analyzed in terms of five statistical error metrics,as well as theWilcoxon rank-sum and ANOVA *** the previously selected algorithms,K Neighbors regressor and support vector regression exhibited good ***,the newly proposed ensemble algorithms exhibited even better *** proposed model showed relative root mean square errors lower than 1.448%and correlation coefficients higher than *** was further verified by benchmarking the new ensemble against several popular swarm intelligence *** is concluded that the proposed algorithms are far superior to the commonly adopted ones.

关键词： renewable energy resources hybrid modeling tilted solar irradiation arid region

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A Multi-Material CCALE-MOF Approach in Cylindrical Geometry

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communications in Computational Physics 2014年第2期15卷 330-364页

作者： Marie Billaud Friess Jerome Breil Pierre-Henri Maire Mikhail Shashkov LUNAM Universite GeMUMR CNRS 6183Ecole Centrale NantesUniversite de Nantes1 rue de la NoeBP 9210144321 Nantes Cedex 3France Univ.Bordeaux CEACNRSCELIAUMR5107F-33400 TalenceFrance CEA CESTA 15 Avenue des Sabli`eresCS 6000133116 Le Barp CedexFrance Los Alamos National Laboratory XCP-4Los AlamosNM 87545USA.

In this paper we present recent developments concerning a Cell-Centered Arbitrary Lagrangian Eulerian(CCALE)strategy using the Moment Of Fluid(MOF)interface reconstruction for the numerical simulation of multi-material compressible fluid flows on unstructured grids in cylindrical ***,our attention is focused here on the following ***,we propose a new formulation of the scheme used during the Lagrangian phase in the particular case of axisymmetric ***,the MOF method is considered for multi-interface reconstruction in cylindrical ***,a method devoted to the rezoning of polar meshes is ***,a generalization of the hybrid remapping to cylindrical geometries is *** explorations are validated by mean of several test cases using unstructured grid that clearly illustrate the robustness and accuracy of the new method.

关键词： Cell-centered scheme Lagrangian hydrodynamics ALE MOF interface reconstruction rezoning algorithm polar meshes hybrid remapping axisymmetric geometries.

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A Phelipanche ramosa KAI2 protein perceives strigolactones and isothiocyanates enzymatically

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Plant communications 2021年第5期2卷 132-147页

作者： Alexandre de Saint Germain Anse Jacobs Guillaume Brun Jean-Bernard Pouvreau Lukas Braem David Cornu Guillaume Clavé Emmanuelle Baudu Vincent Steinmetz Vincent Servajean Susann Wicke Kris Gevaert Philippe Simier Sofie Goormachtig Philippe delavault François-Didier Boyer Institut Jean-Pierre Bourgin INRAEAgroParisTechUniversitéParis-Saclay78000 VersaillesFrance department of Plant Biotechnology and Bioinformatics Ghent University9052 GentBelgium Center for Plant Systems Biology VIB9052 GentBelgium department of Biomolecular Medicine Ghent University9000 GhentBelgium Center for Medical Biotechnology VIB9000 GhentBelgium Laboratoire de Biologie et Pathologie Végétales(LBPV) Equipe d’Accueil 1157Universitéde Nantes44000 NantesFrance Institute for Biology Humboldt-Universit€at zu Berlin10115 BerlinGermany UniversitéParis-Saclay CEACNRSInstitute for Integrative Biology of the Cell(I2BC)91198Gif-sur-YvetteFrance UniversitéParis-Saclay CNRSInstitut de Chimie des Substances NaturellesUPR 230191198Gif-sur-YvetteFrance

Phelipanche ramosa is an obligate root-parasitic weed that threatens major crops in central *** order to germinate,it must perceive various structurally divergent host-exuded signals,including isothiocyanates(ITCs)and strigolactones(SLs).However,the receptors involved are still ***,we identify five putative SL receptors in *** and show that PrKAI2d3 is involved in the stimulation of seed *** demonstrate the high plasticity of PrKAI2d3,which allows it to interact with different chemicals,including *** SL perception mechanism of PrKAI2d3 is similar to that of endogenous SLs in non-parasitic *** provide evidence that PrKAI2d3 enzymatic activity confers hypersensitivity to ***,we demonstrate that methylbutenolide-OH binds PrKAI2d3 and stimulates *** germination with bioactivity comparable to that of *** study demonstrates that *** has extended its signal perception system during evolution,a fact that should be considered for the development of specific and efficient biocontrol methods.

关键词： a/b-hydrolase receptor seed germination stimulant strigolactones isothiocyanates Phelipanche ramosa

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