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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.0}nzh.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.0}ws.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.0}aib, 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

印度旁遮普一些甘蔗品种对氮、磷、钾不同施用水平的效应

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甘蔗糖业 1978年第7期 50-52页

作者： h. s. gil Onkar s.ngh.吴坤宝旁遮普农学院旁遮普农学院

本试验于1967—68年和1968—69年度在旁遮普农学院进行,研究Co.L.9,Co.975,Co.1148和Co.1328等甘蔗品种对不同氮、磷、钾水平的效应。氮肥用量(84,168和252公斤氮/公顷)对甘蔗的分蘖和生长起到有利的影响。氮磷配合施用对甘蔗产量有着... 详细信息

本试验于1967—68年和1968—69年度在旁遮普农学院进行,研究Co.L.9,Co.975,Co.1148和Co.1328等甘蔗品种对不同氮、磷、钾水平的效应。氮肥用量(84,168和252公斤氮/公顷)对甘蔗的分蘖和生长起到有利的影响。氮磷配合施用对甘蔗产量有着增产的作

关键词：施用水平蔗汁蔗糖分氮、磷、钾甘蔗糖料作物旁遮普印度南亚

Inclus.ve quas.elas.ic neutrino-nucleus.s.attering with.energy dens.ty functional nuclear models

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Ch.nes. Ph.s.cs.C 2024年第8期48卷 153-158页

作者： K.s.Kim s.onch.l Ch.i h.na gil Ch.ng h. h.un s.h.ol of liberal arts.and s.ience korea aerospace universitygoyang 10540korea Center for exotic nuclear s.udies institute for basic sciencedaejeon 34126korea Center for extreme nuclear matters korea universityseoul 02841korea Department of ph.s.cs.education daegu universitygyeongsan 38453korea

In th.s.s.udy,we calculated th. inclus.ve ch.rged-current neutrino-nucleus.s.attering from ^(40)Ar in th. quas.elas.ic *** explore th. effect of uncertainties.s.emming from th. nuclear s.ructure,we us.d th. KIDs.Korea-IBs.Daegu-s.KU)nuclear energy dens.ty functional and s.yrme force models.namely s.y4,s.I3,and *** models.were s.lected to h.ve dis.inct beh.vior in terms.of th. dens.ty dependence of th. s.mmetry energy and th. effective mas. of th. *** th. ch.rged-current neutrino s.attering,th. s.ngle-and double-differential cros. s.ctions.were calculated for various.*** cros. s.ctions.are reported as.a function of th. incident neutrino *** th.oretical cros. s.ctions.were compared with.experimental data,and th. roles.of th. effective mas. and s.mmetry energy were inves.igated in terms.of ch.rged-current neutrino-nucleus.s.attering.

关键词： energy dens.ty functional neutrino-nucleus.s.attering s.mmetry energy effective mas. of th. nucleon

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.0}w 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.0}rt-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.0}rt-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.0}res.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.0}wed 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.0}tdown 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.0}an 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

Meas.ring Impact of Lean Manufacturing Tools.for Continuous.Improvement on Economic s.s.ainability

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Journal of s.s.ems.s.ience and s.s.ems.Engineering 2024年第4期33卷 452-474页

作者： Luis.Javier Márquez Figueroa Jorge Luis.García-Alcaraz Ah.ed I.Os.an Alfons. Jes.s.gil López Yas.0}r Aryanfar Mika s.llanpää Mamdouh.El h.j As.ad Department of Electrical Engineering and Computer s.ience Universidad Autónoma de Ciudad JuárezCiudad JuárezChihuahuaMéxico Department of Indus.rial Engineering and Manufacturing Universidad Autónoma de Ciudad JuárezCiudad JuárezChihuahuaMéxico s.h.ol of Ch.mis.ry and Ch.mical Engineering Queens UniversityBelfastNorthern IrelandUK Department of Economic and Managerial s.iences University of La RiojaLa RiojaSpain Department of Ch.mical Engineering University of JohannesburgJohannesburgSouth Africa Department of s.s.ainable and Renewable Energy Engineering University of SharjahSharjahUAE

Us.ng Lean Manufacturing(LM)tools.in production proces.es.is.crucial for companies.economic,environmental,and s.cial s.s.ainability *** s.udy s.0}ws.a s.ructural equation model(s.M)th.t s.0}ws.th. relations.0}p between LM Tools.like Kaizen(KAI),Gemba(GEM),Value s.ream Mapping(Vs.)and Key Performance Indicator(KPI)with.Economic s.s.ainability(ECs..s.ven h.poth.s.s.were evaluated with.data from 179 res.ons.s.to a ques.ionnaire about th. Mexican maquiladora indus.ry,s.0}wing th.t th.s. variables.are *** a 95%confidence level,th. model was.evaluated us.ng th. partial leas. s.uares.*** findings.indicate th.t th. relations.0}ps.between KAI and GEM and KAI and Vs. h.ve th. s.ronges. relations.0}p,followed by Vs. and ECs.h.wever,Vs. h.s.th. s.ronges. effect on *** on th.s. findings.it is.recommended th.t managers.adopt a continuous.improvement(KAI)approach.bas.d on working directly on th. s.0}p floor(GEM and Vs.)to s.pport th.ir decis.ons.regarding economic growth.ECs..

关键词： Lean manufacturing economic s.s.ainability s.ructural equation model quality improvement