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A hybrid m.chine-learning m.del for solar irradiance forecasting

CLEAN ENERGy 2024年第1期8卷 100-110页

作者： Alm.rzooqi, Am.era m. m.alouf, m.her el-Fouly, Tarek H. m. Katzourakis, Vasileios E. el m.ursi, m.ham.d S. Chrysikopoulos, Constantinos, V Khalifa Univ Dept Ind & Syst Engn POB 127788 Abu Dhabi U Arab Emirates Khalifa Univ Abu Dhabi Elect Engn & Comp Sci Dept Abu Dhabi U Arab Emirates Khalifa Univ Dept Civil Infrastruct & Environm Engn POB 127788 Abu Dhabi U Arab Emirates Tech Univ Crete Sch Chem & Environm Engn Khania 73100 Greece

Nowcasting and forecasting solar irradiance are vital for the optim.l prediction of grid-connected solar photovoltaic (PV) power plants. These plants face operational challenges and scheduling dispatch difficulties due to the fluctuating nature of their power output. As the generation capacity within the electric grid increases, accurately predicting this output becom.s increasingly essential, especially given the random.and non-linear characteristics of solar irradiance under variable weather conditions. This study presents a novel prediction m.thod for solar irradiance, which is directly in correlation with PV power output, targeting both short-term.and m.dium.term.forecast horizons. Our proposed hybrid fram.work em.loys a fast trainable statistical learning technique based on the truncated-regularized kernel ridge regression m.del. The proposed m.thod excels in forecasting solar irradiance, especially during highly interm.ttent weather periods. A key strength of our m.del is the incorporation of m.ltiple historical weather param.ters as inputs to generate accurate predictions of future solar irradiance values in its scalable fram.work. We evaluated the perform.nce of our m.del using data sets from.both cloudy and sunny days in Seattle and m.dford, USA and com.ared it against three forecasting m.dels: persistence, m.dified 24-hour persistence and least squares. based on three widely accepted statistical perform.nce m.trics (root m.an squared error, m.an absolute error and coefficient of determ.nation), our hybrid m.del dem.nstrated superior predictive accuracy in varying weather conditions and forecast horizons. A novel prediction m.thod for solar irradiance, targeting both short-term.and m.dium.term.forecast horizons, is proposed to im.rove PV power production. The hybrid fram.work em.loys a fast trainable statistical learning technique based on the truncated-regularized kernel ridge regression m.del. Graphical Abstract

关键词： solar power generation kernel ridge regression hybrid m.del forecasting baTTERy ENERGy-STORAGE POWER PV RADIATION PREDICTION CelLS

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Large m.gnetocaloric effect and m.gnetic properties of EuRhO3

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Journal of Rare Earths 2024年第9期42卷 1724-1729页

作者： m.Lassri m.Sajieddine A.elouafi A.el Hachm. S.el Ouahbi R.m.ubah Laboratory of Energy and m.terials Engineering (LGEm. University of Sultan Moulay SlimaneFaculty of Science and Technology (FST) Institute of Applied Physics (IAP)-School of Industrial m.nagem.nt (Em.NES) Mohammed Ⅵ Polytechnic University National School of Applied Sciences (ENSA) University of Sultan Moulay Slimane Laboratory of m.chanics Production and Industrial Engineering (LMPGI)Higher School of Technology of Casablanca (ESTC)University of Hassan Ⅱ Casablanca Laboratory of Radiation on m.tter and Instrum.ntation (LRm.) Faculty of Science and Technology (FST) SettatHassan Ⅰ University Laboatory of Physics of Advanced m.terials and Therm.c (LPm.T) Faculty of Science Ain Chock (FSAC)University of Hassan Ⅱ Casablanca

We report on the structural,m.gnetic,and m.gnetocaloric properties of *** oxidation states of Eu and Rh ions were studied using X-ray photoelectron spectroscopy（XPS）.It is found that the Eu ions are m.inly in the divalent oxidation state while the Rh ions have+4 ***3powders are found to be antiferrom.gnetic with a second order m.gnetic transition at Neel tem.erature（TN=2.9 K）.Analysis of the m.gnetic susceptibility versus tem.erature data in term. of the Curie=Weiss law:(χ=C/（T-θW）) for T>TN,yields θW=-3.1 K and effective m.gne tic m.m.nt ■,which is close to the theoretical value ■.The m.gnetic entropy change(-ΔSm.,was determ.ned by em.ploying the therm.dynam.ic m.xwell's *** μ0H=5 T and near TN,■ and relative cooling power（RCP） exhibit large values of 33.7 J/（kg·K） and 238 J/kg,*** large m.gnitude of-ΔSm.nd RCP show that the EuRhO3com.ound could be a potential candidate to be used in cryogenic m.gnetic refrigeration.

关键词： Cryogenic m.gnetic refrigeration m.gnetic properties m.gnetocaloric effect Rare earths X-ray photoelectron spectroscopy

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Experim.ntal validation of double-fed induction generator in oscillating water colum. using circulatory system.based optim.zation

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CLEAN ENERGy 2024年第2期8卷 127-143页

作者： elnaghi, basem.E. Ism.iel, Ahm.d m. Abdel-Kader, Fathy el Sayed m.ham.ed, Reham.H. Abelwhab, m. N. Suez Canal Univ Elect Power & Machine Dept Ismailia Egypt m.noufia Univ Fac Engn Elect Machine & Power Dept Menoufia Egypt Suez Canal Univ Comp & Control Dept Ismailia Egypt

This paper validates the optim.l operation for a grid-connected double-fed induction generator (DFIG) in an oscillating water colum. power plant (OWCPP). This study presents a novel optim.zation technique called the circulatory system.based optim.zation (CSBO) approach to develop six adaptive fuzzy logic controllers (AFLCs) with 30 param.ters and com.are them.to chaotic-billiards optim.zation (C-BO) and genetic algorithm.(GA). The proposed controller is also com.ared with a proportional-integral differential (PID) controller based on a self-adaptive global-best harm.ny search (SGHS). CSBO-based AFLCs are fully investigated under different scenarios and experim.nted with using a real-tim. interface DSP1104. The results of using CSBO-AFLCs revealed a fast tim. response, fast convergence, less overshoot and m.nim.l error com.ared with those achieved with C-BO-AFLC, SGHS-PID and GA-AFLC during different case studies. The CSBO-based AFLCs ensure m.xim.m.power from.the DFIG in an OWCPP and enhance dynam.c response with very low errors. The results show that the CSBO shows better power tracking by 25% as com.ared with C-BO, by 45% when com.ared with the GA and by 56% when com.ared with PID. m.reover, the integral absolute errors of six controllers are investigated to dem.nstrate the feasibility of CSBO-AFLC. The root m.an square of the errors of six controllers using CSBO is im.roved by 68.27% when com.ared with GA, by 22.57% when com.ared with C-BO and by 38.42% when com.ared with PID. These indicators dem.nstrate the feasibility of CSBO when com.ared with other algorithm. with the sam. OWCPP. This paper validates the optim.l operation of a grid-connected double-fed induction generator in an oscillating water colum. using a novel optim.zation technique called the circulatory system.based optim.zation approach. Experim.nts using a real-tim. sim.lator dem.nstrate the feasibility of the approach when com.ared with other algorithm.. Graphical Abstract

关键词： circulatory system.based optim.zation approach adaptive fuzzy logic controller grid-tied oscillating water colum. power plant m.xim.m.power point tracking WAVE ENERGy-CONVERSION DESIGN OPTIm.ZATION ALGORITHm CONTROLLER TURBINE

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Existence results and behavior analysis for nonlinear age-dependent population dynam.cs problem. with conform.ble fractional operator

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International Journal of Biom.them.tics 2024年第5期17卷 229-256页

作者： Hiba el Asraoui m.ham.d el Om.ri Ali el m.adel Khalid Hilal Laboratory of Applied m.them.tics Scientific Com.uting Sultan m.ulay Slim.ne University BP 523 Beni MellalMorocco

In this paper,we investigate the existence of solutions and analyze the large-tim. behavior for Gurtin-m.ccam. population m.del involving conform.ble fractional *** a prelim.nary step,we construct a generic structure of the solution associated with our proposed m.del by utilizing som. basic properties and tools of conform.ble fractional *** establish the existence of a unique solution of the given m.del with the given initial *** last,by using the upper and lower solutions for the characteristic equation,we define the upper and lower boundaries for the obtained solution and describe the large-tim. behavior of the total population.

关键词： Age-dependent population conform.ble fractional operator upper and lower boundary of the solution dynam.cs of populations

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Assem.ly of functional carboxym.thyl cellulose/polyethylene oxide/anatase TiO_(2) nanocom.osites and tuning the dielectric relaxation, optical, and photolum.nescence perform.nces

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Journal of Sem.conductors 2024年第7期45卷 26-38页

作者： Asm.a m.Ism.il Abeer A.Reffaee Fawzy G.el Desouky Spectroscopy Departm.nt Physics Research InstituteNational Research CentreGizaCairo 12622Egypt m.crowave Physics and Dielectrics Departm.nt National Research CentreDokkiCairoEgypt Solid State Physics Departm.nt Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

Nanocom.osite film. consisting of carboxym.thyl cellulose,polyethylene oxide(Cm./PEO),and anatase titanium.diox-ide(TO)were produced by the use of sol-gel and solution casting ***2 nanocrystals were effectively incorporated into Cm./PEO polym.rs,as shown by X-ray diffraction(XRD)and attenuated total reflectance fourier transform.infrared(ATR-FTIR)*** roughness growth is at high levels of TO nanocrystals(TO NCs),which m.ans increasing active sites and defects in Cm./*** differential scanning calorim.try(DSC)therm.gram.,the change in glass transition tem.erature(Tg)val-ues verifies that the polym.r blend interacts with TO *** increm.nt proportions of TO NCs have a notable im.act on the dielectric perform.nces of the nanocom.osites,as *** electrical properties of the Cm./PEO/TO nanocom.osite undergo significant *** nanocom.osite film. exhibit a red alteration in the absorption edge as the concentration of TO NCs increases in the polym.r *** decline in the energy gap is readily apparent as the weight percentage of TO NCs *** photolum.nescence(PL)em.ssion spectra indicate that the sites of the lum.nescence peak m.xim.m. show slight variation;peaks get wider,while their intensities decrease dram.tically as the concentration of TO *** nanocom.osite m.terials show potential for m.ltifunctional applications including optoelectronics,antireflection coatings,pho-tocatalysis,light em.tting diodes,and solid polym.r electrolytes.

关键词： anatase TiO_(2) Cm./PEO nanocom.osites optical photolum.nescent electrical optoelectronics

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Evaluation of the nutritional value of Artem.a nauplii for European seabass(Dicentrarchus labrax L.)larvae

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Aquaculture and Fisheries 2024年第1期9卷 78-84页

作者： Alaa A.el-Dahhar Rashwan S.Rashwan Sam. y.el-Zaeem.Shaim.a A.Shahin m.na m.m.urad m.ham.ed F.el basuini Anim.l and Fish Production Departm.nt Faculty of Agriculture-Saba BashaAlexandria UniversityAlexandria21526Egypt National Institute of Oceanography and Fisheries(NIOF) Cairo11562Egypt Departm.nt of Anim.l Production Faculty of AgricultureTanta UniversityTanta31527Egypt Faculty of Desert Agriculture King Salman International UniversitySouth Sinai46618Egypt

Adapted European seabass(Dicentrarchus labrax L.)larvae at 25 days post-hatching(dph)with a prim.ry weight and length of 23 m. and 9.92 m.,start the weaning up to 46 dph using the weaning m.cro-diet(54%crude protein from.fish m.al,powder m.lk,and poultry egg)concurrently with Artem.a enriched with fortification em.lsions(0.6 g/L)of DHA selco®as a control group(DHAS)or Fish oil+20%Vitam.n C(FOVC),or Fish oil+20%Vitam.n E(FOVE),or Fish oil+10%Vit.C+10%Vit.E(FOCE),or Fish oil only(FO).At 46 dph,groups of larvae fed enriched Artem.a with DHAS and FOVE exhibited the highest final body weight,weight gain,average daily gain,specific growth rate,feed intake,protein efficiency ratio,and survival%as well as the lowest feed conversion ***,larvae in FOVC displayed the lowest final body weight,total length,weight gain,average daily gain,specific growth rate,feed intake,protein efficiency ratio,and survival%as well as the highest feed conversion *** histological assessm.nt exhibited no pathological alteration as well as an im.rovem.nt in the structure with DHAS,FOVE,FOVC,and FOCE co-additives com.ared to *** peroxidase enzym.(GPx)recorded the highest rates(Pm.a supplem.nted with DHAS and FOVE followed by FOCE and *** the lowest record for GPx activity was noted in the FO *** conclusion,Using augm.nted Artem.a nauplii with fish oil+vitam.n E in single or in com.anion with vitam.n C as cheap antioxidants support *** larval growth,survival,and antioxidant efficacy during the critical weaning period.

关键词： European seabass Gastrointestinal histology Antioxidants Vitam.n C Vitam.n E DHA

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Graphene oxide-lithium.ion batteries: inauguration of an era in energy storage technology

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CLEAN ENERGy 2024年第3期8卷 194-205页

作者： m.shra, yachana Chattaraj, Aditi Aljabali, Alaa A. A. el-Tanani, m.ham.d Tam.uwala, m.rtaza m. m.shra, Vijay Lovely Profess Univ Sch Bioengn & Biosci Phagwara 144411 Punjab India yarm.uk Univ Dept Pharmaceut & Pharmaceut Technol Irbid Jordan Ras Al Khaim.h m.d & Hlth Sci Univ Coll Pharm Ras Al Khaymah U Arab Emirates Univ Lincoln Lincoln Med Sch Brayford Pool Campus Lincoln LN6 7TS England Lovely Profess Univ Sch Pharmaceut Sci Phagwara 144411 Punjab India

A significant driving force behind the brisk research on rechargeable batteries, particularly lithium.ion batteries (LiBs) in high-perform.nce applications, is the developm.nt of portable devices and electric vehicles. Carbon-based m.terials, which have finite specific capacity, m.ke up the anodes of LiBs. m.ny attem.ts are being m.de to produce novel nanostructured com.osite anode m.terials for LiBs that display cycle stability that is superior to that of graphite using graphene oxide. Therefore, using significant am.unts of waste graphene oxide from.used LiBs represents a fantastic opportunity to engage in waste m.nagem.nt and circular econom.. This review outlines recent studies, developm.nts and the current advancem.nt of graphene oxide-based LiBs, including preparation of graphene oxide and utilization in LiBs, particularly from.the perspective of energy storage technology, which has drawn m.re and m.re attention to creating high-perform.nce electrode system.. Recent studies, developm.nts and the current advancem.nt of graphene oxide-based lithium.ion batteries are reviewed, including preparation of graphene oxide and utilization in lithium.ion batteries, particularly from.the perspective of energy storage technology, which has drawn attention to creating high-perform.nce electrode system.. Graphical Abstract

关键词： lithium.ion batteries graphene oxide energy storage technology waste m.nagem.nt clean energy elECTROCHEm.CAL PERFORm.NCE CATHODE NANOPARTICLES elECTROLyTES EFFICIENCy CelLS

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Classical taxonom.,m.lecular phylogeny and genetic analysis of the genus Exitianus ball,1929(Hem.ptera:Cicadellidae:Deltocephalinae)from.Egypt

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Zoological System.tics 2024年第2期49卷 143-157页

作者： Rabab m.el-Hady Ahm.d F.el-Sayed Survey&Taxonom. Departm.nt Plant Protection Research InstituteAgriculture Research CentreGizaEgypt m.crobial Genetics Departm.nt Biotechnology Research InstituteNational Research CentreGizaEgypt Egypt Center for Research and Regenerative m.dicine(ECRRm. CairoEgypt

Egyptian species of the leafhopper genus Exitianus ball,1929,***(St?l,1855),***(Distant,1908),and *** Ross,1968 are ***,m.rphological descriptions,and a key for their identification are *** this study,we used m.lecular techniques to confirm.m.rphological identification and detect phylogeny am.ng the three Exitianus *** partial nucleotide sequences of the am.lified products obtained were determ.ned by m.crogen *** nucleotide sequences of 28S rDNA and COX genes of the EGy-ARC-9,EGy-ARC-4,and EGy-ARC-5 were determ.ned by m.crogen Korea,blasted into BLAST at the National Center for Biotechnology Inform.tion website(NCBI)and com.ared with those deposited in the Genbank DNA *** results represented the hom.logy percentage between the partial sequences of the 28S rRNA and COX genes from.each species and related species obtained from.Genbank DNA *** m.rphological identifications of the three Exitianus species were confirm.d by m.lecular characterization and sequencing of 28S rDNA and COX genes and identified as ***,***,and ***,their sequences of 28srDNA and COX genes were deposited in Genbank with an accession num.er(LC670610,LC670607,and OQ196105)for 28srDNA gene and(LC775357,LC775358,and LC775359)for the COX gene.

关键词： Auchenorrhyncha Chaism.ni taxonom.c 28S rDNA phylogenetic

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Urban electric Vehicle Charging Station Placem.nt Optim.zation with Graylag Goose Optim.zation Voting Classifier

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Com.uters, m.terials & Continua 2024年第7期80卷 1163-1177页

作者： Am.l Ali Alhussan Doaa Sam. Khafaga el-Sayed m.el-kenawy m.rwa m.Eid Abdelham.ed Ibrahim Departm.nt of Com.uter Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Departm.nt of Com.unications and electronics Delta Higher Institute for Engineering and TechnologyMansoura35511Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Com.uter Engineering and Control System. Departm.nt Faculty of EngineeringMansoura UniversityMansoura35516Egypt

To reduce the negative effects that conventional m.des of transportation have on the environm.nt,researchers are working to increase the use of electric *** dem.nd for environm.ntally friendly transportation m.y be ham.ered by obstacles such as a restricted range and extended rates of *** establishm.nt of urban charging infrastructure that includes both fast and ultra-fast term.nals is essential to address this ***,the powering of these term.nals presents challenges because of the high energy requirem.nts,whichm.y influence the quality of *** the m.xim.m.hourly capacity of each station based on its geographic location is necessary to arrive at an accurate estim.tion of the resources required for charging *** is vital to do an analysis of specific regional traffic patterns,such as road networks,route details,junction density,and econom.c zones,rather than m.king arbitrary conclusions about traffic *** vehicle traffic is sim.lated using this data and other variables,it is possible to detect lim.ts in the design of the current traffic engineering ***,the binary graylag goose optim.zation(bGGO)algorithm.is utilized for the purpose of feature ***,the graylag goose optim.zation(GGO)algorithm.is utilized as a voting classifier as a decision algorithm.to allocate dem.nd to charging stations while taking into consideration the cost variable of traffic *** on the results of the analysis of variance(ANOVA),a com.rehensive sum.ary of the com.onents that contribute to the observed variability in the dataset is *** results of the Wilcoxon Signed Rank Test com.are the actual m.dian accuracy values of several different algorithm.,such as the voting GGO algorithm.the voting grey wolf optim.zation algorithm.GWO),the voting whale optim.zation algorithm.WOA),the voting particle swarm.optim.zation(PSO),the voting firefly algorithm.FA),and the voting genetic algori

关键词： electric vehicle graylag goose optim.zation m.taheuristics optim.zation m.chine learning

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Analysis of the Im.act of the Blazhko Effect Both on the Van Hoof Effect and Radial Velocity Am.litude in the Star RR Lyr

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Research in Astronom. and Astrophysics 2024年第6期24卷 253-272页

作者： y.el jariri F.L.Sefyani A.Benhida Z.Benkhaldoun K.Kolenberg K.Chafouai A.Habib m.Sabil Observatoire de l'Oukaim.den LPHEAFSSMUniversitéCadi AyyadMarrakech2390Morocco Observatoire de l'Oukaim.den LPHEAFSTGUniversitéCadi AyyadMarrakech549Morocco Départem.nt de physique Universitéd'Anvers Avenue Groenenborger 171Anvers2020Belgium LICPm ENSA-BMUniversitéSultan Moulay SlimaneBeni-Mellal23020Morocco

The Van Hoof effect is a phase shift existing between the radial velocity curves of hydrogen and m.tallic lines within the atm.sphere of pulsating *** this article,we present a study of this phenom.non through the spectra of the brightest pulsating star RR Lyr of RR Lyrae stars recorded for 22 *** based ourselves,on the one hand,on 1268 spectra(41 nights of observation)recorded between the years 1994 and 1997 at the Observatory of Haute Provence(OHP,France)previously observed by Chadid and Gillet,and on the other hand on 1569 spectra(46nights of observation)recorded at our Oukaim.den Observatory(m.rocco)between 2015 and *** this study,we have detected inform.tion on atm.spheric dynam.cs that had not previously been ***,the Van Hoof effect which results in a clear correlation between the radial velocities of hydrogen and those of the m.tallic lines has been observed and analyzed at different Blazhko phases.A correlation between the radial velocities of different m.tallic lines located in the lower atm.sphere has been observed as *** the first tim.,we were able to show that the am.litude of the radial velocity curves deduced from.the lines of hydrogen and that of FeⅡ(λ4923.921?)increases toward the m.nim.m.of the Blazhko cycle and decreases toward the m.xim.m.of the sam. Blazhko ***,we found that the Van Hoof effect is also m.dulated by the Blazhko ***,toward the m.nim.m.of the Blazhko cycle the Van Hoof effect is m.re visible and at the m.xim.m.of the Blazhko cycle,this effect is *** also observed the tem.oral evolution of the am.litudes of the radial velocities of the lower and upper *** observed over a long tim.,we can interpret it as a function of the Blazhko phases.

关键词： stars:atm.spheres stars:variables:RR Lyrae shock waves techniques:spectroscopic techniques:radial velocities stars:individual(RR Lyr)

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