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Editorial for th. s.ecial Is.ue on Emerging Tech.ology and Advanced Application of Nondes.ructive Detection for Power Equipment

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Ch.nes. Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. Mei h. Li s. Tianjin Univers.ty China Ts.ngh.a s.enzh.n International Graduate s.h.ol China Lanzh.u Jiaotong Univers.ty China

Th. rapid development of clean and renewable energy tech.ologies.repres.nted by wind and s.lar energy,as.well as.th. continuous.growth.of load demand,h.ve put forward h.gh.r requirements.for th. s.fe operation of th. power *** performance of power equipment bas.d on traditional dielectric materials.is.often limited by various.defects.generated during molding,trans.ortation,as.embly,and operation,wh.ch.cannot meet th. reliability requirements.of power s.s.ems.in th. new *** detection is.an es.ential tech.ical meth.d in indus.rial development,wh.ch.can detect and evaluate th. defect and damage s.atus.of in-s.rvice equipment,key components.and materials.with.ut damaging th. object.

关键词： s.rvice Application operation

Tilted global s.lar irradiance in Bah.ain: an experimental s.udy

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CLEAN ENERGY 2024年第2期8卷 27-34页

作者： Vas.likos. N. Georgantopoulou, C. Alajaimi, h. Almajed, s. h. Ah.ed, M. Math.oulakis. D. Bah.ain Polytech Sch Mech Engn POB 33349 Isa Town Bahrain Natl Tech.Univ Ath.ns Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In th. pres.nt work, tilted global s.lar irradiance data are pres.nted and analys.d, meas.red for a period of 1 year on th. campus.of Bah.ain Polytech.ic, Kingdom of Bah.ain, from both.a fixed ph.tovoltaic panel and a moving one via a two-axis.s.lar tracker. Th. fixed panel faces.s.uth.with.an angle of 26 degrees.with.res.ect to th. h.rizontal, coinciding with.th. local geograph.cal latitude. Th. s.cond panel is.moved by two motors. controlled by a global pos.tioning s.s.em and s.itable s.ftware s. th.t th. s.n's.rays.are perpendicular to th. panel s.rface. A pyranometer is.ins.alled on each.panel, recording th. tilted global s.lar irradiance, s.ored by us.ng a data logger. Th. analys.s.of th. data obtained s.ows.a 33% s.lar energy gain on an annual bas.s.for th. moving panel (2780 vers.s.2088 kWh.m2 on th. fixed panel). More importantly, in June, wh.n th. energy demand in Bah.ain is.elevated due to th. increas.d res.dential cooling loads. th. s.lar energy received by th. moving panel is.54.7% h.gh.r compared with.th.t of th. fixed panel. On a percentage bas.s. th. increas. in s.lar energy from th. moving panel is.profound in th. early morning and late evening h.urs. Moreover, th. reduction in th. s.lar energy received by th. fixed panel from May to June does.not appear in th. moving panel becaus. of th. adjus.able orientation of th. latter. Th.ough.ut th. year, th. mean daily s.lar power varies.between 0.37 and 0.56 kW/m2 for th. fixed panel, and 0.45 and 0.70 kW/m2 for th. moving panel. In winter, s.lar energy fluctuations.are elevated due to erratic weath.r conditions.th.t pres.nt a peak s.andard deviation of 28% of th. corres.onding mean. Th. data pres.nted are us.ful for potential s.lar inves.ments.in Gulf countries. Tilted global s.lar irradiance data are meas.red and analys.d for a period of 1 year on th. campus.of Bah.ain Polytech.ic, Kingdom of Bah.ain, from both.a fixed ph.tovoltaic panel and a moving one via a two-axis.s.lar tracker. Graph.cal Abs.ract

关键词： tilted s.lar irradiance renewable energy s.lar tracking ph.tovoltaic Gulf Cooperation Council Countries s.N TRACKING ENERGY s.s.EMs PANELs WORLD

A h.drodynamic modelling of wave-activated bodies.for wavelet marine regions

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CLEAN ENERGY 2024年第2期8卷 35-47页

作者： Peh. J. s. Muh.eldeen, Moh.mmed W. s.uaib, N. h. UCs. Univ Fac Engn Technol & Built Environm Mech Engn Dept Kuala Lumpur 56000 Malaysia MTC Engineer s.n Bh. Shah Alam Selangor Malaysia

Recently, mos. wave energy res.arch.h.s.targeted s.a areas.with.h.gh.power dens.ty under extreme wave conditions.for deployment. Th.s.trend often leads.to h.gh.r energy cos.s.for wave power plants. h.wever, many marine areas.with.low power dens.ty, ch.racterized by wavelet conditions.and les. des.ructive forces.th.n extreme wave conditions. remain underexplored. Th.refore, th.s.s.udy aimed to propos. a wave-activated body model for s.a regions.with.wavelet conditions. Th. wave-activated body des.gn proces. encompas.ed s.te s.lection, parameter determination, geometry des.gn, comparis.n and performance evaluation us.ng th. ANs.s.(R) AQWA model. Th. res.lts.indicated th.t th. propos.d device ach.eved th. des.red h.ave motion, with.an amplitude range of 1.2 to -2.5 m, validating its.potential for deployment in marine regions.with.wavelet conditions. Notably, wh.le th. propos.d des.gn is.optimized for wavelet conditions. it was.found to h.ve potential limitations.in extreme wave environments. Th.s.obs.rvation emph.s.zes.th. ch.llenge of formulating a generalized des.gn s.itable for both.conditions. Cons.quently, it is.pivotal for wave-activated body des.gns.to be cus.omized bas.d on th. s.ecific ocean conditions.th.y target, unders.oring th. need for s.ecialized des.gns.of wave energy converters.th.t cons.der th. unique wave ch.racteris.ics.of th.ir deployment s.tes. A wave-activated body is.des.gned for energy generation in ocean regions.with.wavelet conditions. h.drodynamic modelling is.carried out for two locations.with.different wave ch.racteris.ics.to determine th. optimum conditions.for deployment. Graph.cal Abs.ract

关键词： wave energy converter s.uth.Ch.na s.a renewable and s.s.ainable energy wavelet ANs.s.AQWA h.drodynamic wave-activated bodies ENERGY IMPACT

Prediction of vertical dis.lacement for a buried pipeline s.bjected to normal fault us.ng a h.brid FEM-ANN approach

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Frontiers.of s.ructural and Civil Engineering 2024年第3期18卷 428-443页

作者： h.dye JALALI Reza YEGANEh.Kh.Ks.R Danial MOh.MMADZADEh.s. Nader KARBALLAEEZADEh.Amir h.GANDOMI Department of Civil Engineering Architecture and UrbanismSadjad University of TechnologyPO Box ***MashhadIran Department of Civil Engineering Faculty of EngineeringEqbal Lahoori Institute of Higher EducationPO Box ***MashhadIran Faculty of Civil Engineering Architectureand ArtScience and Research Branch of Islamic Azad UniversityPO Box ***TehranIran Faculty of Engineering&Information Tech.ology University of Technology SydneyUltimoNSW 2007Australia Univers.ty Res.arch.and Innovation Center(EKIK) Óbuda UniversityBudapest 1034Hungary

Fault movement during earth.uakes.is.a geotech.ical ph.nomenon th.eatening buried pipelines.and with.th. potential to caus. s.vere damage to critical ***,effective prediction of pipe dis.lacement is.crucial for preventive management *** s.udy aims.to develop a fas.,h.brid model for predicting vertical dis.lacement of pipe networks.wh.n th.y experience *** th.s.s.udy,th. complex beh.vior of s.il and a buried pipeline s.s.em s.bjected to a normal fault is.analyzed by us.ng an artificial neural network(ANN)to generate predictions.th. beh.vior of th. s.il wh.n different parameters.of it are *** th.s.purpos.,a finite element model is.developed for a pipeline s.bjected to normal fault *** data bank us.d for training th. ANN includes.all th. critical s.il parameters.coh.s.on,internal friction angle,Young’s.modulus.and faulting).Furth.rmore,a math.matical formula is.pres.nted,bas.d on bias.s.and weigh.s.of th. ANN *** res.lts.s.ow th.t th. maximum error of th. pres.nted formula is.2.03%,wh.ch.makes.th. propos.d tech.ique efficiently predict th. vertical dis.lacement of buried pipelines.and h.nce,h.lps.to optimize th. upcoming pipeline projects.

关键词： buried pipelines normal Fault finite element meth.d multilayer perceptron neural network formulation

A h.brid mach.ne-learning model for s.lar irradiance forecas.ing

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CLEAN ENERGY 2024年第1期8卷 100-110页

作者： Almarzooqi, Ameera M. Maalouf, Mah.r El-Fouly, Tarek h. M. Katzourakis. Vas.leios.E. El Mours., Moh.med s. Ch.ys.kopoulos. Cons.antinos. V Kh.lifa Univ Dept Ind & Syst Engn POB 127788 Abu Dhabi U Arab Emirates Kh.lifa Univ Abu Dh.bi Elect Engn & Comp Sci Dept Abu Dhabi U Arab Emirates Kh.lifa Univ Dept Civil Infrastruct & Environm Engn POB 127788 Abu Dhabi U Arab Emirates Tech.Univ Crete Sch Chem & Environm Engn Khania 73100 Greece

Nowcas.ing and forecas.ing s.lar irradiance are vital for th. optimal prediction of grid-connected s.lar ph.tovoltaic (PV) power plants. Th.s. plants.face operational ch.llenges.and s.h.duling dis.atch.difficulties.due to th. fluctuating nature of th.ir power output. As.th. generation capacity with.n th. electric grid increas.s. accurately predicting th.s.output becomes.increas.ngly es.ential, es.ecially given th. random and non-linear ch.racteris.ics.of s.lar irradiance under variable weath.r conditions. Th.s.s.udy pres.nts.a novel prediction meth.d for s.lar irradiance, wh.ch.is.directly in correlation with.PV power output, targeting both.s.ort-term and medium-term forecas. h.rizons. Our propos.d h.brid framework employs.a fas. trainable s.atis.ical learning tech.ique bas.d on th. truncated-regularized kernel ridge regres.ion model. Th. propos.d meth.d excels.in forecas.ing s.lar irradiance, es.ecially during h.gh.y intermittent weath.r periods. A key s.rength.of our model is.th. incorporation of multiple h.s.orical weath.r parameters.as.inputs.to generate accurate predictions.of future s.lar irradiance values.in its.s.alable framework. We evaluated th. performance of our model us.ng data s.ts.from both.cloudy and s.nny days.in s.attle and Medford, Us. and compared it agains. th.ee forecas.ing models. pers.s.ence, modified 24-h.ur pers.s.ence and leas. s.uares. Bas.d on th.ee widely accepted s.atis.ical performance metrics.(root mean s.uared error, mean abs.lute error and coefficient of determination), our h.brid model demons.rated s.perior predictive accuracy in varying weath.r conditions.and forecas. h.rizons. A novel prediction meth.d for s.lar irradiance, targeting both.s.ort-term and medium-term forecas. h.rizons. is.propos.d to improve PV power production. Th. h.brid framework employs.a fas. trainable s.atis.ical learning tech.ique bas.d on th. truncated-regularized kernel ridge regres.ion model. Graph.cal Abs.ract

关键词： s.lar power generation kernel ridge regres.ion h.brid model forecas.ing BATTERY ENERGY-s.ORAGE POWER PV RADIATION PREDICTION CELLs

Optimization of s.ealth.atch.Network s.curity s.s.em for th. Detection and Mitigation of Dis.ributed Denial of s.rvice (DDos. Attack: Application to s.art Grid s.s.em

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Communications.and Network 2024年第3期16卷 108-134页

作者： Emmanuel s. Kolawole Penros. s. Cofie Joh. h. Fuller Cajetan M. Akujuobi Emmanuel A. Dada Jus.in F. Foreman Pamela h. Obiomon Electrical and Computer Engineering Department Prairie View A&M University Prairie View TX USA

Th. s.art Grid is.an enh.ncement of th. traditional grid s.s.em and employs.new tech.ologies.and s.ph.s.icated communication tech.iques.for electrical power trans.is.ion and dis.ribution. Th. s.art Grid’s.communication network s.ares.information about s.atus.of its.s.veral integrated IEDs.(Intelligent Electronic Devices.. h.wever, th. IEDs.connected th.ough.ut th. s.art Grid, open opportunities.for attackers.to interfere with.th. communications.and utilities.res.urces.or take clients. private data. Th.s.development h.s.introduced new cyber-s.curity ch.llenges.for th. s.art Grid and is.a very concerning is.ue becaus. of emerging cyber-th.eats.and s.curity incidents.th.t h.ve occurred recently all over th. world. Th. purpos. of th.s.res.arch.is.to detect and mitigate Dis.ributed Denial of s.rvice [DDos. with.application to th. Electrical s.art Grid s.s.em by deploying an optimized s.ealth.atch.s.cure Network analytics.tool. In th.s.paper, th. DDos.attack in th. s.art Grid communication networks.was.modeled us.ng s.ealth.atch.tool. Th. s.mulated network cons.s.ed of s.cure Network Analytic tools.virtual mach.nes.(VMs., electrical Grid network communication topology, attackers.and Target VMs. Finally, th. experiments.and s.mulations.were performed, and th. res.arch.res.lts.s.owed th.t s.ealth.atch.analytic tool is.very effective in detecting and mitigating DDos.attacks.in th. s.art Grid s.s.em with.ut caus.ng any blackout or s.utdown of any internal s.s.ems.as.compared to oth.r tools.s.ch.as.GNs., Nes.i2, NIs.T Framework, OMNeT++, INET Framework, Reas., Ns., Ns., M5 s.mulator, OPNET, PLC & TIA Portal management s.ftware wh.ch.do not h.ve th. capability to do s.. Als., us.ng s.ealth.atch.tool to create a s.curity bas.line for s.art Grid environment, contributes.to ris. mitigation and s.und s.curity h.giene.

关键词： s.art Grid s.s.em Dis.ributed Denial of s.rvice (DDos. Attack Intrus.on Detection and Prevention s.s.ems Detection Mitigation and s.ealth.atch

Optimizing Average Electric Power During th. Ch.rging of Lith.um-Ion Batteries.Th.ough.th. Taguch. Meth.d

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Trans.ctions.of Tianjin Univers.ty 2024年第2期30卷 152-166页

作者： Moh. h.s.Alras.dan Department of Electrical Engineering Al-Hussein Bin Talal UniversityMaan 71110Jordan

In recent times. lith.um-ion batteries.h.ve been widely us.d owing to th.ir h.gh.energy dens.ty, extended cycle lifes.an, and minimal s.lf-dis.h.rge rate. Th. des.gn of h.gh.s.eed rech.rgeable lith.um-ion batteries.faces.a s.gnificant ch.llenge owing to th. need to increas. average electric power during ch.rging. Th.s.ch.llenge res.lts.from th. direct influence of th. power level on th. rate of ch.mical reactions.occurring in th. battery electrodes. In th.s.s.udy, th. Taguch. optimization meth.d was.us.d to enh.nce th. average electric power during th. ch.rging proces. of lith.um-ion batteries. Th. Taguch. tech.ique is.a s.atis.ical s.rategy th.t facilitates.th. s.s.ematic and efficient evaluation of numerous.experimental variables. Th. propos.d meth.d involved varying s.ven input factors. including pos.tive electrode th.cknes., pos.tive electrode material, pos.tive electrode active material volume fraction, negative electrode active material volume fraction, s.parator th.cknes., pos.tive current collector th.cknes., and negative current collector th.cknes.. Th.ee levels.were as.igned to each.control factor to identify th. optimal conditions.and maximize th. average electric power during ch.rging. Moreover, a variance as.es.ment analys.s.was.conducted to validate th. res.lts.obtained from th. Taguch. analys.s. Th. res.lts.revealed th.t th. Taguch. meth.d was.an eff ective approach.for optimizing th. average electric power during th. ch.rging of lith.um-ion batteries. Th.s.indicates.th.t th. pos.tive electrode material, followed by th. s.parator th.cknes. and th. negative electrode active material volume fraction, was.key factors.s.gnificantly infl uencing th. average electric power during th. ch.rging of lith.um-ion batteries.res.ons.. Th. identification of optimal conditions.res.lted in th. improved performance of lith.um-ion batteries. extending th.ir potential in various.applications. Particularly, lith.um-ion batteries.with.average electric power of 16 W and 17

关键词： Lith.um-ion batteries Average electric power during ch.rging Taguch. meth.d COMs.L Multiph.s.cs.s.ftware C rate L27 orth.gonal array

s.x differences.in th. ris. of retinopath. of prematurity:a s.s.ematic review,frequentis. and Bayes.an meta‑analys.s.and meta‑regres.ion

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World Journal of Pediatrics 2024年第4期20卷 340-352页

作者： Tamara M.h.nds.h.id s.lvia Gulden mohamad F.Almutairi František Bartoš Giacomo Cavallaro Eduardo Villamor Divis.on of Neonatology Department of PediatricsMosaKids Children’s HospitalMaastricht University Medical Center(MUMC+)School for Oncology and Reproduction(GROW)Maastricht UniversityP.Debyelaan 25.P.O.Box 58006202 AZ MaastrichtThe Netherlands Neonatal Intens.ve Care Unit Sant’Anna HospitalComoItaly Department of Ps.ch.logy University of Amsterdam1001 NK AmsterdamThe Netherlands Neonatal Intens.ve Care Unit Fondazione IRCCS Ca’Granda Ospedale Maggiore PoliclinicoMilanItaly

Background Retinopath. of prematurity(ROP)is.generally cons.dered to be more frequent in males.th.n in ***,it is.not known wh.th.r s.x differences.in ROP affect all degrees.of th. condition,are global and h.ve ch.nged as.neonatology h.s.*** aimed to conduct a s.s.ematic review and meta-analys.s.of s.udies.addres.ing s.x differences.in th. ris. of developing *** PubMed/MEDLINE and Embas. databas.s.were *** frequentis.,random-effects.ris. ratio(RR)and 95%confidence interval(CI)were *** model averaged(BMA)meta-analys.s.was.us.d to calculate th. Bayes.factors.BFs..Th. BF10 is.th. ratio of th. probability of th. data under th. alternative h.poth.s.s.h.)over th. probability of th. data under th. null h.poth.s.s.h.).Res.lts.We included 205 s.udies.867,252 infants..Frequentis. meta-analys.s.s.owed a pos.tive as.ociation between male s.x and s.vere ROP(113 s.udies.RR=1.14,95%CI=1.07–1.22)but no as.ociation with.any ROP(144 s.udies.RR=1.00,95%CI=0.96–1.03).BMA s.owed extreme evidence in favor of h. for s.vere ROP(BF10=71,174)and s.rong evidence in favor of h. for any ROP(BF10=0.05).Th. as.ociation between male s.x and s.vere ROP remained s.able over time and was.pres.nt only in coh.rts.from countries.with.a h.gh.or h.gh.middle s.ciodemograph.c *** Our s.udy confirms.th. pres.nce of a male dis.dvantage in s.vere ROP but not in les. s.vere forms.of th. *** are variations.in th. s.x differences.in ROP,depending on geograph.cal location and s.ciodemograph.c level of th. countries.

关键词： Oxidative s.res. Retinopath. of prematurity s.x ch.racteris.ics

Efficiency of Bio-Fertilizing as.One of th. Natural Alternatives.to Improve th. Growth.of Kh.ya s.negalens.s.and s.ietenia mah.goni Trees.and for s.s.ainability

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Agricultural s.iences 2024年第2期15卷 292-310页

作者： s.faa A. s. Gh.rab Nas.wa h. Moh.med Nader A. El-s.anh.rey Nabal s. El-s.ah.t Amr R. Rabie Fores.ry and Timber Trees.Department Horticulture Research Institute Agricultural Research Center Ismailia Egypt Fores.ry and Timber Trees.Department Horticulture Research Institute Agricultural Research Center Alexandria Egypt Botanical Gardens.Department Horticulture Research Institute Agricultural Research Center Alexandria Egypt Fores.ry and Timber Trees.Department Horticulture Research Institute Agricultural Research Center Giza Egypt

A field experiment was.carried out at Is.ailia Res.arch.s.ation, Is.ailia Governorate from 2020-2022 to improve th. growth.of Kh.ya s.negalens.s.and s.ietenia mah.goni by us.ng a combination of mineral fertilizer (NPK) and biological fertilizer (Azotobacter ch.oococcum, Bacillus.megath.rium, and Bacillus.circulant) as.recommended dos. under new s.ndy s.ils.conditions. s.lit plot des.gned with.four treatments.(Control, (50% Mineral fertilizer (M.) + 50% Biological fertilizer (Bio.)), 100% M. and 100% Bio.) of each.s.ecies. Vegetative growth. leaf area, tree biomas., s.ored carbon, bas.l area, tree volume, and in th. s.il both.of microbial account and mineral content were determined. Th. experimental res.lts.s.owed no s.gnificant differences.between s.udied s.ecies.among th. mos. s.udied parameters.except for Kh.ya s.negalens.s.wh.ch.gave th. h.gh.s. s.gnificant difference in root biomas. and below-s.ored carbon th.n s.ietenia mah.goni. Evidently, th. h.gh.s. s.gnificant growth.parameters.were 100% mineral fertilizer followed by (50% M. + 50% Bio.) as.compared with.control. No s.gnificant difference between 100% M. and (50% M. + 50% Bio.) of s.oot dry biomas. (15.19 and 12.02 kg, res.ectively) and above-s.ored carbon (0.28 and 0.22 Mt, res.ectively). Microbial account and mineral content in s.il were improved after cultivation of tree s.ecies.compared to before planting and control, es.ecially with.50% mineral fertilizer and 50% bio-fertilizer treatment. In conclus.on, a treatment containing 50% mineral fertilizer and 50% bio-fertilizer h.s.led to th. ideal Kh.ya s.negalens.s.and s.ietenia mah.goni growth.in s.ndy s.il for ch.aper and s.s.ainable.

关键词： Kh.ya s.negalens.s s.ietenia mah.goni Mineral Fertilizer Bio-Fertilizer Growth.Parameters Tree Biomas. s.ored Carbon s.s.ainable