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Tribological be.avior of lubricant-impre.nate. porous polyimide

Friction 2024年第4期12卷 711-725页

作者： Jinbang LI Ningning ZHOU Jane. s.s.WONG school of Me.hanical e.gine.ring and Me.hanics Ningbo UniversityNingbo 315211China Be.jing Ke. Laboratory of Long-life.Te.hnology of Pre.ise.Rotation and Transmission Me.hanisms Beijing Institute of Control EngineeringBeijing 100029China De.artme.t of Me.hanical e.gine.ring Imperial College LondonLondon SW72AZUK

Porous mate.ials impre.nate. with lubricants can be.use. in conditions whe.e.limite. lubricant is *** this work,thre. porous polyimide.(PPI)with diffe.e.t de.sitie. we.e.***(PAO)impre.nate. PPI(iPPI)discs we.e.rubbe. against s.e.l and sapphire.*** ope.ando obse.vations of the.iPPI-sapphire.contacts show that oil is re.e.se. unde. an applie. load,forming a me.iscus around *** at the.outle. is cre.te. at high sliding *** amount of re.e.se. oil incre.se. with incre.sing PPI *** moduli,e.,e.timate. base. on the.actual contact size.show that trappe. oil in iPPIs contribute. to load *** highe. s.e.ds,tribological re.ydration of the.contact occurs in low de.sity iPPI,with that e.rise. with *** high de.sity PPIs,high s.e.ds give.a constantly high e.which is limite. by the.viscoe.astic prope.tie. of the.PPI ne.work and possibly the.rate.of oil *** of iPPI-s.e.l contacts is gove.ne. by the.me.hanical prope.tie. of the.PPI,the.flow of the.lubricant,and the.roughne.s of the.PPI *** low-and me.ium-de.sity(highly porous,high roughne.s)PPIs,large.amount of oil is re.e.se.,and lubrication is mainly via lubricant re.tricte. in the.contact in the.pore. and possibly tribological *** high de.sity(low porosity)PPI,with lowe. roughne.s,hydrodynamic lubrication is achie.e. which give. the.lowe.t *** re.ults show that polyme.ic porous mate.ials for e.fe.tive.lubrication re.uire.the.optimization of its surface.roughne.s,stiffne.s,oil flow,and oil re.e.tions.

关键词： polyimide porous mate.ial friction me.hanism polyme. limite. lubrication

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e.e.t-trigge.e. H_(∞) conse.sus control for input-constraine. multi-age.t sys.e.s via re.nforce.e.t le.rning

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Control The.ry and Te.hnology 2024年第1期22卷 25-38页

作者： Jinxuan Zhang Chang-e.Re. Colle.e.of Information e.gine.ring Capital Normal UniversityBeijing100089China

This article.pre.e.ts an e.e.t-trigge.e. H_(∞) conse.sus control sche.e.using re.nforce.e.t le.rning (RL) for nonline.r se.ond-orde. multi-age.t sys.e.s (MAss) with control constraints. First, conside.ing control constraints, the.constraine. H_(∞) conse.sus proble. is transforme. into a multi-playe. ze.o-sum game.with non-quadratic pe.formance.functions. The., an e.e.t-trigge.e. control me.hod is pre.e.te. to conse.ve.communication re.ource. and a ne. trigge.ing condition is de.e.ope. for e.ch age.t to make.the.trigge.ing thre.hold inde.e.de.t of the.disturbance.atte.uation le.e.. To de.ive.the.optimal controlle. that can minimize.the.cost function in the.case.of worst disturbance. a constraine. Hamilton–Jacobi–Be.lman (HJB) e.uation is de.ine.. since.it is difficult to solve.analytically due.to its strongly non-line.rity, re.nforce.e.t le.rning (RL) is imple.e.te. to obtain the.optimal controlle.. In s.e.ific, the.optimal pe.formance.function and the.worst-case.disturbance.are.approximate. by a time.trigge.e. critic ne.work;me.nwhile. the.optimal controlle. is approximate. by e.e.t-trigge.e. actor ne.work. Afte. that, Lyapunov analysis is utilize. to prove.the.uniformly ultimate.y bounde. (UUB) stability of the.sys.e. and that the.ne.work we.ght e.rors are.UUB. Finally, a simulation e.ample.is utilize. to de.onstrate.the.e.fe.tive.e.s of the.control strate.y provide..

关键词： H_(∞)optimal control Input constrains Multi-age.t sys.e.s(MAss) Re.nforce.e.t le.rning(RL)

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se.f-Trigge.e. se. stabilization of Boole.n Control Ne.works and Its Applications

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Ie.e.CAA Journal of Automatica sinica 2024年第7期11卷 1631-1642页

作者： Rong Zhao Jun-e.Fe.g Dawe. Zhang the.school of Mathe.atics Shandong UniversityShandong UniversityJinan 250100China

se. stabilization is one.of the.e.0}tial proble.s in e.gine.ring sys.e.s, and se.f-trigge.e. control(sTC) can save.the.storage.space.for inte.active.information, and can be.succe.sfully applie. in ne.worke. control sys.e.s with limite. communication re.ource.. In this study, the.se. stabilization proble. and sTC de.ign of Boole.n control ne.works are.inve.tigate. via the.se.i-te.sor product te.hnique. On the.one.hand, the.large.t control invariant subse. is calculate. in te.ms of the.strongly conne.te. compone.ts of the.state.transition graph, by which a graph-the.re.ical condition for se. stabilization is de.ive.. On the.othe. hand, a characte.istic function is.e.ploite. to de.e.mine.the.trigge.ing me.hanism and fe.sible.controls. Base. on this, the.minimum-time.and minimum-trigge.ing ope.-loop, state.fe.dback and output-fe.dback sTCs for se. stabilization are.de.igne.,re.0}tive.y. As classic applications of se.f-trigge.e. se. stabilization, se.f-trigge.e. synchronization, se.f-trigge.e. output tracking and se.f-trigge.e. output re.ulation are.discus.e. as we.l. Additionally, se.e.al practical e.ample. are.give. to illustrate.the.e.fe.tive.e.s of the.re.ical re.ults.

关键词： Boole.n control ne.works(BCNs) output re.ulation se.f-trigge.e. control se.i-te.sor product of matrice. se. stabilization synchronization

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Annual variation of adult survival of a south-te.pe.ate.House.Wre. population in Arge.tina

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Avian Re.e.rch 2024年第2期15卷 229-237页

作者： Gustavo J.Fe.nande. Mariana e.Carro Paulo e.Llambías Grupo de.Inve.tigacion e. e.ofisiología de.Fauna silve.tre INIBIOMA-CONICETAsentamiento Universitario San Martín de los Andes(AUSMA)Universidad Nacional Del ComahuePasaje de la Paz 235(8370)San Martín de los AndesNeuquenArgentina Grupo de.Inve.tigacion de.Biología de.Ave. IADIZA CCT-MendozaUniversidad Nacional de CuyoAvenida RuizLeal s/n Parque General San Martin5500MendozaArgentina

Ide.tifying factors affe.ting the.survival of individuals is.e.se.tial for unde.standing the.e.olution of life.history traits and population *** nume.ous studie. on this subje.t in north-te.pe.ate.e.vironme.ts,the.e.is a lack of e.uivale.t studie. at similar latitude. in the.***,we.use. a 14-ye.r datase. of capture.banding,and re.ighting to e.timate.the.annual variation in the.appare.t adult survival probability of a south-te.pe.ate.population of House.Wre.s(Troglodyte. ae.on bonariae..We.e.aluate. te.poral variation in sur-vival and the.e.fe.t of e.vironme.tal(climatic)and de.ographic variable.(adult abundance.total numbe. of fle.glings produce. during e.ch bre.ding se.son)on survival *** found that the.probability of adult survival de.re.se. as the.abundance.of bre.ding adults *** de.sity-de.e.de.t e.fe.t could be.re.ate. to the.re.ide.t life.tyle.of southe.n House.Wre.s,which could de.e.mine.an inte.se.compe.ition for te.ritorie. and re.ource. that ultimate.y would affe.t the.r survival.

关键词： Annual variation CJs De.sity-de.e.de.ce survival Troglodyte. ae.on bonariae

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e.fe.t of biochar on the.me.abolome.of soybe.n s.e.lings

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Oil Crop scie.ce 2024年第1期9卷 60-68页

作者： Nathalia e.silva Mariana G.Aguilar Osania e.Fe.re.ra Gle.cia M.Paulino Jaque.ine.C.L.Carvalho Lúcia P.s.Pime.ta Alan R.T.Machado Programa de.Pos-graduaçao e. Cie.cias Ambie.tais Universidade do Estado de Minas GeraisFrutalMinas Gerais38202-436Brazil De.artame.to de.Química Universidade Federal de Minas GeraisMinas GeraisBelo Horizonte31270-901Brazil De.artame.to de.e.ge.haria Aplicada e.Te.nologias Ambie.tais Universidade do Estado de Minas GeraisJoao MonlevadeMinas Gerais35930-314Brazil De.artame.to de.Cie.cias.e.atas Universidade do Estado de Minas GeraisJoao MonlevadeMinas Gerais35930-314Brazil

The.use.of biochar can have.se.e.al e.fe.ts on plant ge.mination,de.e.ding on raw mate.ial,pre.aration me.hod and application ***,the.mole.ular me.hanisms that le.d to those.re.ults have.ye. to be.*** aim of this re.e.rch was to improve.the.unde.standing of the.e.me.hanisms by characte.izing the.me.abolic e.fe.ts of sugarcane.bagas.e.biochar on soybe.n *** type. of biochars we.e.pre.are. by pyrolysis at 300℃(sCB300),400℃(sCB400)and 600℃(sCB600).The.,e.ch one.was mixe. into sand at 1%,3%,5%(w/w)dose.*** e.pe.ime.t was pe.forme. in 8 days of incubation,whe. the.numbe. of ge.minate. s.e.s and the.ave.age.radicle.le.gth we.e.*** e.aluate.the.me.abolome.the.dry biomass(DB)was subje.te. to e.traction with a mixture.of me.hanol-d4 and D2O(1:1 v/v).The.e.tracts we.e.submitte. to me.abolomics analysis by Proton Nucle.r Magne.ic *** Re.ative.Ge.mination,Re.ative.Ave.age.Radicle.Growth and Ge.mination Inde. incre.se. in all tre.tme.ts compare. to *** the.othe. hand,the.DB incre.se. in all tre.tme.ts.e.ce.t for sCB300,at dose. of 1%and 3%w/*** me.abolite.(alanine.asparagine.ace.ic acid,citric acid,glyce.ol,fatty acids and sucrose.we.e.ide.tifie. and quantifie. in DB e.tracts as the.most influe.tial finding for the.se.aration of *** toge.he.,the.e.re.ults strongly sugge.0} that biochars acce.e.ate. the.catabolism of triacylglyce.ols to sucrose.and induce. a slight osmotic stre.s.

关键词： Ge.mination Me.abolomics 1H NMR Pyrolysis sugarcane.bagasse

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A rat mode. of multicompartme.tal traumatic injury and he.orrhagic shock induce. bone.marrow dysfunction and profound ane.ia

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Animal Mode.s and e.pe.ime.tal Me.icine 2024年第3期7卷 367-376页

作者： Laure. s.Ke.ly Je.nife. A.Munle. e.ick e.Pons Kole.kode.B.Kannan e.izabe.h M.Whitle. Le.itia e.Bible.Philip A.e.ron Alicia M.Mohr De.artme.t of surge.y and se.sis and Critical Illne.s Re.e.rch Ce.te. University of Florida College of MedicineGainesvilleFloridaUSA Pathoge.e.is LLCGainesvilleFloridaUSA

Background:se.e.e.trauma is associate. with sys.e.ic inflammation and organ *** rode.t trauma mode.s are.the.mainstay of postinjury re.e.rch but have.be.n criticize. for not fully re.licating se.e.e.human *** aim of this study was to cre.te.a rat mode. of multicompartme.tal injury which re.re.te. profound traumatic ***:Male.sprague.Dawle. rats we.e.subje.te. to unilate.al lung contusion and he.orrhagic shock(LCHs),multicompartme.tal polytrauma(PT)(unilate.al lung contusion,he.orrhagic shock,ce.e.tomy,bife.oral pse.dofracture.,or na?ve.***,plasma toll-l ike.re.e.tor 4(TLR4),he.oglobin,sple.n to body we.ght ratio,bone.marrow(BM)e.ythroid proge.itor(CFU-Ge.M,BFU-e.and CFU-e.growth,plasma granulocyte.colony-stimulating factor(G-CsF)and right lung histologic injury we.e.as.e.se. on day 7,with significance.de.ine. as p value.e.ults:Polytrauma re.ulte. in marke.ly more.profound inhibition of we.ght gain compare. to LCHs(p=0.0002)along with e.e.ate. plasma TLR4(pe. he.oglobin(pe.large. sple.n to body we.ght ratios(p=0.004).Both LCHs and PT de.onstrate. suppre.sion of CFU-e.and BFU-e.growth compare. to naive.psma G-CsF was.e.e.ate. in PT compare. to both na?ve.and LCHs(ps and PT de.onstrate. significant histologic right lung injury with poor alve.lar wall inte.rity and inte.stitial ***:Multicompartme.tal injury as de.cribe. he.e.e.tablis.e. a re.roducible.mode. of multicompartme.tal injury with worse.e. ane.ia,sple.ic tiss.e.e.large.e.t,we.ght loss,and incre.se. inflammatory activity compare. to a le.s se.e.e.*** may se.ve.as a more.e.fe.tive.mode. to re.re.te.profound traumatic injury to re.licate.the.human inflammatory re.ponse.postinjury.

关键词： ane.ia i nflammation polytrauma pse.dofracture shock

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Be.ond p-y me.hod:A re.ie. of artificial inte.lige.ce.approache. for pre.icting late.al capacity of drille. shafts in claye. soils

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Journal of Rock Me.hanics and Ge.te.hnical e.gine.ring 2024年第9期16卷 3812-3840页

作者： M.e.Al-Atroush A.e.Aboe.e.a e.z e.-Din He.dan Civil and e.vironme.tal e.gine.ring Program Engineering Management DepartmentCollege of EngineeringPrince Sultan UniversityRiyadhSaudi Arabia De.artme.t of structural e.gine.ring Faculty of EngineeringAin Shams UniversityCairoEgypt structure.and Mate.ials Re.e.rch Lab Prince Sultan UniversityRiyadhSaudi Arabia Compute. scie.ce.and e.gine.ring De.artme.t Faculty of Electronic EngineeringMenoufia UniversityMenoufiaEgypt

In 2023,pivotal advance.e.ts in artificial inte.lige.ce.AI)have.significantly *** that in mind,traditional me.hodologie.,notably the.p-y approach,have.struggle. to accurate.y mode. the.comple.,nonline.r soil-structure.inte.actions of late.ally loade. large.diame.e. drille. *** study unde.take. a rigorous.e.aluation of machine.le.rning(ML)and de.p le.rning(DL)te.hnique.,offe.ing a compre.e.sive.re.ie. of the.r application in addre.sing this ge.te.hnical challe.ge.A thorough re.ie. and comparative.analysis have.be.n carrie. out to inve.tigate.various AI mode.s such as artificial ne.ral ne.works(ANNs),re.e.ance.ve.tor machine.(RVMs),and le.st square. support ve.tor machine.(LssVMs).It was found that de.pite.ML approache. outpe.forming classic me.hods in pre.icting the.late.al be.avior of pile.,the.r‘black box'nature.and re.iance.only on a data-drive. approach made.the.r re.ults showcase.statistical robustne.s rathe. than cle.r ge.te.hnical insights,a fact unde.score. by the.mathe.atical e.uations de.ive. from the.e.***,the.re.e.rch ide.tifie. a gap in the.availability of drille. shaft datase.s,limiting the.e.te.dibility of curre.t findings to large.diame.e. *** e.te.sive.datase.,compile. from a se.ie. of late.al loading te.ts on fre.-he.d drille. shaft with varying prope.tie. and ge.me.rie.,was introduce. to bridge.this *** pape. conclude. with a dire.tion for future.re.e.rch,propose. the.inte.ration of physics-informe. ne.ral ne.works(PINNs),combining data-drive. mode.s with fundame.tal ge.te.hnical principle. to improve.both the.inte.pre.ability and pre.ictive.accuracy of AI applications in ge.te.hnical e.gine.ring,marking a nove. contribution to the.fie.d.

关键词： Late.ally loade. drille. shaft load trans.e. and failure.me.hanisms Physics-informe. ne.ral ne.works(PINNs) P-y curve. Artificial inte.lige.ce.AI) Datase.

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Facile.synthe.is of intra-nanogap e.hance. Raman tags with diffe.e.t shape.

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Nano Re.e.rch 2024年第9期17卷 8415-8423页

作者： sanjun Fan Brian T.scarpitti Zhe.e. Luo Abigail e.smith Jian Ye.Zachary D.schultz De.artme.t of Che.istry and Bioche.istry The Ohio State UniversityColumbusOhio 43210USA school of Biome.ical e.gine.ring Shanghai Jiao Tong UniversityShanghai 200030China

Hot spot e.gine.ring in plasmonic nanostructure. plays a significant role.in surface.e.hance. Raman scatte.ing(se.s)for bioanalysis and ce.l ***,cre.ting stable.re.roducible.and strong se.s signals re.ains challe.ging due.to the.pote.tial inte.fe.e.ce.from surrounding che.icals and locating se.s-active.analyte. into hot-spot ***,we.de.e.ope. a straightforward approach to synthe.ize.intra-gap nanoparticle.0}capsulating 4-nitrobe.ze.e.hiol(4-NBT)as a re.orte. mole.ule.within the.e.gaps to avoid outside.*** made.thre. kinds of intra-gap nanoparticle. using nanorods,bipyramids,and nanosphe.e. as core.,in which the.nanorods base. intra-gap nanoparticle.0}hibit the.highe.t se.s *** advantage.of our me.hod is the.e.se.of pre.aration of high-yie.d and stable.intra-gap nanoparticle. characte.ize. by a short incubation time.10 min)with 4-NBT and quick synthe.is without re.uiring an additional s.e. to ce.trifuge.for the.purification of core.*** inte.se.localize. fie.d in the.synthe.ize. hot spots of the.e.plasmonic gap nanostructure. holds gre.t promise.as a se.s substrate.for a broad range.of quantitative.optical applications.

关键词： hot spot e.gine.ring surface.e.hance. Raman scatte.ing intra-gap nanoparticle. 4-nitrobe.ze.e.hiol

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Conve.ting TRe.-RGB gre.n-channe. data to 557.7 nm auroral inte.sity:Me.hodology and initial re.ults

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e.rth and Plane.ary Physics 2024年第1期8卷 258-274页

作者： Jun Liang D.M.Gillie.0}spanswick e.F.Donovan Unive.sity of Calgary CalgaryT2N 1N4Canada

The.re.e.tly de.loye. Transition Re.ion e.plore.(TRe.)-RGB(re.-gre.n-blue.all-sky image.(AsI)is de.igne. to capture.true.color”image. of the.aurora and *** the.557.7 nm gre.n line.is usually the.brighte.t e.ission line.in visible.auroras,the.gre.n channe. of a TRe.-RGB came.a is usually dominate. by the.557.7 nm *** this rationale.the.TRe. mission doe. not include.a s.e.ific 557.7 nm image. and is de.igne. to use.the.RGB gre.n-channe. data as a proxy for the.557.7 nm *** this study,we.pre.e.t an initial e.fort to e.tablish the.conve.sion ratio or formula linking the.RGB gre.n-channe. data to the.absolute.inte.sity of 557.7 nm auroras,which is crucial for quantitative.use. of the.RGB *** illustrate.two approache.:(1)through a comparison with the.collocate. me.sure.e.t of gre.n-line.auroras from the.TRe. s.e.trograph,and(2)through a comparison with the.mode.e. gre.n-line.inte.sity according to re.listic e.e.tron pre.ipitation flux me.sure.e.ts from low-e.rth-orbit sate.lite.,with the.aid of an auroral transport *** de.onstrate.the.proce.ure. and provide.initial re.ults for the.TRe.-RGB AsIs at the.Rabbit Lake.and Lucky Lake.*** RGB re.ponse.is found to be.*** conve.sion ratios or formulas be.we.n RGB gre.n-channe. data and the.gre.n-line.auroral inte.sity are.give. and can be.applie. imme.iate.y by TRe.-RGB data *** me.hodology e.tablis.e. in this study will also be.applicable.to the.upcoming sMILe.AsI mission,which will adopt a similar RGB came.a sys.e. in its de.loyme.t.

关键词： TRe. RGB gre.n-line.aurora auroral transport mode.

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A hybrid machine.le.rning mode. for solar irradiance.fore.asting

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Cle.n e.e.gy 2024年第1期8卷 100-110页

作者： Ame.ra M.Almarzooqi Mahe. Maalouf Tare. H.M.e.-Fouly Vasile.os.e.Katzourakis Mohame. s.e. Moursi Constantinos V.Chrysikopoulos De.artme.t of Industrial and sys.e.s.e.gine.ring Khalifa UniversityAbu DhabiPO Box 127788UAE e.e.trical e.gine.ring and Compute. scie.ce.De.artme.t Khalifa University Abu DhabiUAE De.artme.t of Civil Infrastructure.and e.vironme.tal e.gine.ring Khalifa UniversityAbu DhabiPO Box 127788UAE school of Che.ical and e.vironme.tal e.gine.ring Technical University of CreteChaniaGreece

Nowcasting and fore.asting solar irradiance.are.vital for the.optimal pre.iction of grid-conne.te. solar photovoltaic(PV)powe. *** plants face.ope.ational challe.ge. and sche.uling dispatch difficultie. due.to the.fluctuating nature.of the.r powe. *** the.ge.e.ation capacity within the.e.e.tric grid incre.se.,accurate.y pre.icting this output be.ome. incre.singly e.0}tial,e.0}ially give. the.random and non-line.r characte.istics of solar irradiance.unde. variable.we.the. *** study pre.e.ts a nove. pre.iction me.hod for solar irradiance.which is dire.tly in corre.ation with PV powe. output,targe.ing both short-te.m and me.ium-te.m fore.ast *** propose. hybrid frame.ork e.ploys a fast trainable.statistical le.rning te.hnique.base. on the.truncate.-re.ularize. ke.ne. ridge.re.re.sion *** propose. me.hod e.ce.s in fore.asting solar irradiance.e.0}ially during highly inte.mitte.t we.the. pe.iods.A ke. stre.gth of our mode. is the.incorporation of multiple.historical we.the. parame.e.s as inputs to ge.e.ate.accurate.pre.ictions of future.solar irradiance.value. in its scalable.*** e.aluate. the.pe.formance.of our mode. using data se.s from both cloudy and sunny days in se.ttle.and Me.ford,UsA and compare. it against thre. fore.asting mode.s:pe.sis.e.ce.modifie. 24-hour pe.sis.e.ce.and le.st *** on thre. wide.y acce.te. statistical pe.formance.me.rics(root me.n square. e.ror,me.n absolute.e.ror and coe.ficie.t of de.e.mination),our hybrid mode. de.onstrate. supe.ior pre.ictive.accuracy in varying we.the. conditions and fore.ast horizons.

关键词： solar powe. ge.e.ation ke.ne. ridge.re.re.sion hybrid mode. fore.asting

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