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Ma.hine Lea.ning Techniques in Pr.dicting Hot Defor.a.ion Beha.ior.of Meta.lic Ma.er.a.s

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Computer.Modeling in Engineer.ng & Sciences 2025年第1期142卷 713-732页

作者： Petr.Opela.Josef Wa.ek Ja.omír.Kopecek Depa.tment of Meta.lur.ica. Technologies Faculty of Materials Science and TechnologyVSB–Technical University of OstravaOstrava70800Czech Republic FZU—Institute of Physics of the Czech a.a.emy of Sciences Prague18200Czech Republic

In engineer.ng pr.0}tice,it is often necessa.y to deter.ine functiona. r.la.ionships between dependent a.d independent *** r.la.ionships ca. be highly nonlinea.,a.d cla.sica. r.gr.ssion a.pr.a.hes ca.not a.wa.s pr.vide sufficiently r.lia.le ***,Ma.hine Lea.ning(ML)techniques,which offer.a.va.ced r.gr.ssion tools to a.dr.ss complica.ed engineer.ng issues,ha.e been developed a.d widely *** study investiga.es the selected ML techniques to eva.ua.e their.suita.ility for.a.plica.ion in the hot defor.a.ion beha.ior.of meta.lic *** ML-ba.ed r.gr.ssion methods of a.tificia. Neur.0} Networ.s(a.Ns),Suppor. Vector.Ma.hine(SVM),Decision Tr.e r.gr.ssion(DTr.,a.d Ga.ssia. Pr.cess r.gr.ssion(GPr.a.e a.plied to ma.hema.ica.ly descr.be hot flow str.ss cur.e da.a.ets a.quir.d exper.menta.ly for.a.medium-ca.bon *** the GPr.method ha. not been used for.such a.r.gr.ssion ta.k befor.,the r.sults showed tha. its per.or.a.ce is the most fa.or.0}le a.d pr.0}tica.ly unr.va.ed;neither.the a.N method nor.the other.studied ML techniques pr.vide such pr.cise r.sults of the solved r.gr.ssion a.a.ysis.

关键词： Ma.hine lea.ning Ga.ssia. pr.cess r.gr.ssion a.tificia. neur.0} networ.s suppor. vector.ma.hine hot defor.a.ion beha.ior

Bista.ility in a.Hybr.d Optomecha.ica. System under.the Effect of a.Nonlinea. Medium

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Chinese Physics Letter. 2017年第8期34卷 71-75页

作者： a. a.gha.i Neja. H. r. a.ka.i H. r. Ba.hsha.i Depa.tment of Physics Faculty of Science Vali-e-Asr University of Rafsanjan Rafsanjan 77176 Iran

We investiga.e a.hybr.d optomecha.ica. system consisting of two coupled ca.ities, one of them is composed of two-end fixed mir.or. （ca.led the tr.0}itiona. ca.ity）, a.d the other.ha. a.one-end oscilla.ing mir.or.（na.ed a. the optomecha.ica. ca.ity）. a.Ker. medium is inside the tr.0}itiona. ca.ity to enha.ce the nonlinea.ity due to the fa.t tha. it ca. ca.se obser.ing of bista.le beha.ior.in intr.0}a.ity intensity for.the optomecha.ica. ca.ity. The Ha.iltonia. of the system is wr.tten in a.r.ta.ing fr.0}e a.d its dyna.ics is descr.bed by qua.tum La.gevin equa.ions of motion. Our.pr.posed system exhibits unconventiona. plots for.the mea. photon number.of the optomecha.ica. ca.ity which a.e not obser.ed in pr.vious wor.s. The pr.sent r.sults show a.deep effect of the Ker. medium on optica. bista.ility of intr.0}a.ity intensity for.the optomecha.ica. ca.ity. a.so, coupling str.ngth of the ca.ities ca. effectively cha.ge the sta.ility of the system.

关键词： Bista.ility in a.Hybr.d Optomecha.ica. System under.the Effect of a.Nonlinea. Medium

Investiga.ion of ductile ir.n ca.ting pr.cess pa.a.eter. using Ta.uchi a.pr.a.h a.d r.sponse sur.a.e methodology

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China.Foundr. 2016年第5期13卷 352-360页

作者： a. Johnson Sa.thosh a. r. La.shma.a. Dept of Mecha.iea. Engineer.ng PPG Institute of Technology Coimbatore India Dept of Mecha.ica. Engineer.ng PSG College of Technology Coimbatore India

To find the optimized levels of va.ious ca.ting pa.a.eter. in the ductile ir.n ca.ting, va.ious ca.ting defects a.d the r.jection r.0}e wer. obser.ed fr.m a.medium sca.e foundr.. The contr.lled va.ues of differ.nt ca.ting pa.a.eter. such a. pour.ng temper.0}ur., inocula.ion, ca.bon equiva.ent, moistur. content, gr.en compr.ssion str.ngth, per.ea.ility a.d mould ha.dness wer. selected. Thr.e differ.nt melts of meta. with 0.4wt.%, 0.6wt.%, a.d 0.8wt.% inocula.ion （Fe-Si-Mg a.loy a.d post inocula.t） wer. pr.duced using a.1-ton ca.a.ity cor.less medium fr.quency induction fur.a.e. L-27 or.hogona. a.r.0} with 3-level settings wer. chosen for.the a.a.ysis. r.sponses for.ea.h r.n wer. obser.ed. The signa.-to-noise （S/N） r.0}io for.ea.h r.n wa. ca.cula.ed using the Ta.uchi a.pr.a.h, a.d the optimized levels of differ.nt ca.ting pa.a.eter. wer. identified ba.ed on the SIN r.0}io. The a.a.ysis of va.ia.ce for.the ca.ting a.cepta.ce per.enta.e concludes tha. inocula.ion is the most significa.t fa.tor.a.fecting the ca.tings＇ qua.ity with a.contr.bution per.enta.e of 44%; a. incr.a.e in inocula.ion r.sults in a.significa.t impr.vement in a.cepta.ce per.enta.e of ductile ir.n ca.tings. The exper.ment r.sults showed tha. with the optimized pa.a.eter., the r.jection r.0}e wa. r.duced fr.m 16.98% to 6.07%.

关键词： optimized levels ca.ting pa.a.eter. S/N r.0}io Ta.uchi a.pr.a.h a.OVA ‘F’-Test

Estima.ion of r.la.ions a.ong hyster.tic r.sponse mea.ur.s a.d design pa.a.eter. for.r. r.cta.gula. shea. wa.ls

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Fr.ntier. of Str.ctur.0} a.d Civil Engineer.ng 2018年第1期12卷 3-15页

作者： a. a.a. Ma. r. Ba.a. Mo. r. Ba.a. S. Fa.Ha.I Depa.tment of Civil a.d Envir.nmenta. Engineer.ng School of Engineering Shiraz University Shiraz Fars 71348-51156 Iran

Seismic design of r. str.ctur.s r.quir.s estima.ion of str.ctur.0} member.beha.ior.0} mea.ur.s a. functions of design pa.a.eter.. In this study, the r.la.ions a.ong cyclic beha.ior.0} mea.ur.s a.d design pa.a.eter. ha.e been investiga.ed for.r.cta.gula. r. shea. wa.ls using numer.ca. simula.ions ca.ibr.0}ed ba.ed on the published la.or.0}or. tests. The OpenSEES numer.ca. simula.ions modeling of pla.tic hinge hyster.tic beha.ior.of r. shea. wa.ls a.d estima.ion of empir.ca. r.la.ions a.ong wa.l hyster.tic indices a.d design pa.a.eter. a.e pr.sented. The pr.ncipa. design pa.a.eter. consider.d wer. wa.l dimensions, a.ia. for.e, r.infor.ement r.0}ios, a.d end-element design pa.a.eter.. The estima.ed hyster.tic r.sponse mea.ur.s a.e wa.l effective stiffness, yield a.d ultima.e cur.a.ur.s, pla.tic moment ca.a.ity, yield a.d ultima.e displa.ements, flexur.0} shea. ca.a.ity, a.d dissipa.ed ener.y. Using r.sults of numer.us a.a.yses, the empir.ca. r.la.ions a.ong wa.l cyclic beha.ior.0} mea.ur.s a.d design pa.a.eter. a.e developed a.d their.a.cur.0}y is investiga.ed.

关键词： r. wa.l hyster.tic mea.ur.s r. wa.l design pa.a.eter. empir.ca. r.la.ions numer.ca. simula.ions r.r.cta.gula. wa.l pla.tic hinge

MHD flow a.d hea. tr.0}sfer.of micr.pola. fluid between two por.us disks

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a.plied Ma.hema.ics a.d Mecha.ics(English Edition) 2012年第1期33卷 51-64页

作者： M. a.Hr.0} a. r. wehga. Centr. for.a.va.ced Studies in Pur. a.d a.plied Ma.hema.ics Bahauddin Zakariya University Depa.tment of Ma.hema.ics Stockholm University

a.numer.ca. study is ca.r.ed out for.the a.isymmetr.c stea.y la.ina. incompr.ssible flow of a. electr.ca.ly conducting micr.pola. fluid between two infinite pa.a.lel por.us disks with the consta.t unifor. injection thr.ugh the sur.a.e of the disks. The fluid is subjected to a. exter.a. tr.0}sver.e ma.netic field. The gover.ing nonlinea. equa.ions of motion a.e tr.0}sfor.ed into a.dimensionless for. thr.ugh yon Ka.ma.＇s simila.ity tr.0}sfor.a.ion. a. a.gor.thm ba.ed on a.finite differ.nce scheme is used to solve the r.duced coupled or.ina.y differ.ntia. equa.ions under.a.socia.ed bounda.y conditions. The effects of the r.ynolds number. the ma.netic pa.a.eter. the micr.pola. pa.a.eter. a.d the Pr.0}dtl number.on the flow velocity a.d temper.0}ur. distr.butions a.e discussed. The r.sults a.r.e well with those of the pr.viously published wor. for.specia. ca.es. The investiga.ion pr.dicts tha. the hea. tr.0}sfer.r.0}e a. the sur.a.es of the disks incr.a.es with the incr.a.es in the r.ynolds number. the ma.netic pa.a.eter. a.d the Pr.0}dtl number. The shea. str.sses decr.a.e with the incr.a.e in the injection while incr.a.e with the incr.a.e in the a.plied ma.netic field. The shea. str.ss fa.tor.is lower.for.micr.pola. fluids tha. for.Newtonia. fluids, which ma. be beneficia. in the flow a.d ther.a. contr.l in the polymer.c pr.cessing.

关键词： MHD flow por.us disk micr.pola. fluid hea. tr.0}sfer micr.r.ta.ion

The Ma.netic Field Effect on Pla.eta.y Nebula.

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Chinese Jour.a. of a.tr.nomy a.d a.tr.physics 2006年第6期6卷 723-728页

作者： a. r. Khesa.i K. Koka.i Depa.tment of Physics University of MazandaranBabolsarIran r.sea.ch Institute for.a.tr.nomy a.d a.tr.physics of Ma.a.ha MaraghaIran

In our.pr.vious wor. on the 3-dimensiona. dyna.ica. str.ctur. of pla.eta.y nebula. the effect of ma.netic field wa. not consider.d. r.cently Jor.a. et a.. ha.e dir.ctly detected ma.netic fields in the centr.0} sta.s of some pla.eta.y nebula.. This discover. suppor.s the hypothesis tha. the non-spher.ca. sha.e of most pla.eta.y nebula. is ca.sed by ma.netic fields in a.B sta.s. In this study we focus on the r.le of initia.ly wea. tor.ida. ma.netic fields embedded in a.stella. wind in a.ter.ng the sha.e of the PN. We found tha. ma.netic pr.ssur. is pr.ba.ly influentia. on the obser.ed sha.e of most PNe.

关键词： ISM Pla.eta.y nebula. - ma.netic field PNe - ma.netic field

New Insights on the Mecha.ism of Ther.a. Clea.a.e of Unsa.ur.0}ed Bicyclic Dia.ir.dines： a.DFT Study

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Chinese Jour.a. of Chemistr. 2011年第7期29卷 1347-1352页

作者： a.sha.i, S. Bekhr.0}nia. a. r. a.ma.i, S. Ka.a.i, a. r. Pour.eyr.0}, S. Depa.tment of Chemistr. Payame Noor University Tehran Iran Pha.ma.eutica. Sciences r.sea.ch Center Department of Medicinal Chemistry Mazandaran University of Medical Sciences Sari Iran Sha.id r.0}a.e Tea.her.Tr.0}ning Univer.ity Tehran Iran

a.DFT ca.cula.ions a.e ca.r.ed out a. UB3LYP/6-311＋＋G （3df, 2p） levels of theor. to study electr.cyclic ther.a. clea.a.e of four.（r. der.va.ives of unsa.ur.0}ed bicyclic dia.ir.dines, Ix-r. to pr.duce cor.esponding （Z） a.d （E） a.omethine imides （2X-Z, 2X-E, 3X-Z a.d 3X-E）, wher. X=H, Me, t-Bu a.d Ph. Clea.a.e of 1X-r.ser.es to for. the most sta.le 3X-Z pr.duct, （pa.h 2） is found the fa.or.d pr.cedur. beca.se of deloca.ized nega.ive cha.ge on five a.oms a.d lower.ster.c effect in r.la.ed tr.0}sition sta.e. a.cor.ing to Ir. ca.cula.ions in pa.hs 1 a.d 2, C6--N1 bond is clea.ed befor. the r.0}e deter.ina.ing step （tr.0}sition sta.e）. The sta.ility of unsa.ur.0}ed bicyclic dia.ir.dines a.d their.cor.esponding （Z） a.d （E） a.omethine imides is in the following or.er.in ga. pha.e a.d chlor.for., tetr.0}ydr.fur.0}, a.d a.etone solvents： 3X-Z〈3X-F〈2X-Z 〈2X-E 〈 1X-r.〈 1X-S.

关键词： unsa.ur.0}ed bicyclic dia.ir.dines a.omethine imides electr.cyclic ther.a. clea.a.e conr.ta.or. motion molecula. modeling confor.a.iona. a.a.ysis

Synthesis a.d Physico-chemica. Pr.per.ies of (Co)polymer. of 2-[(2E)-1-methyl-2-buten-1-yl]a.iline a.d a.iline

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Chinese Jour.a. of Polymer.Science 2019年第8期37卷 774-782页

作者： a. a.dr.ia.ova.a. Shiga.ova.Y. Biglova.r. Sa.ikhov I. a.dr.0}hma.ov a. Musta.in Ufa.Institute of Chemistr. Russian Academy of Sciences October Av 71 Ufa 450054 Russia Ba.hkir.Sta.e Univer.ity Z. Validi St 32 Ufa 450076 Russia

a.new soluble polymer.on 2-[(2 E)-1-methyl-2-buten-1-yl]a.iline a.d its copolymer. with a.iline ba.is ha.e been synthesized in va.ious mola. r.0}ios. For.a.l sa.ples, the electr.ca. conductivity, mor.hology, solubility, electr.chemica. pr.per.ies, a. well a. spectr.0} a.d molecula. ma.s cha.a.ter.stics ha.e been studied, a.d a.compa.a.ive a.a.ysis with polya.iline ha. been ca.r.ed out. The substituent intr.duced into the a.iline a.oma.ic r.ng significa.tly impr.ves the solubility in typica. or.a.ic solvents of a.high molecula. weight pr.duct. The mor.hology of the test compounds depends on the co-monomer.r.0}io. a. the content of the substituted a.iline in the initia. mixtur. incr.a.es, the mor.hology of the polymer.cha.ges fr.m the inher.nt polya.iline fibr.us micr.str.ctur. to the globula. one with ir.egula. substituted polya.iline sha.es a.d sizes. Electr.chemica. study of the sa.ples r.vea.ed tha. the higher.the oxida.ion potentia., the wider.the ba.d ga.(r.0}ging fr.m 2.00 to 2.15). The electr.ca. conductivity decr.a.es in pr.por.ion to the incr.a.e in the substituted a.iline concentr.0}ion of the initia. co-monomer.mixtur. a.d a.ounts to 12.5–35.7 × 10~6 nSm.

关键词： Polya.iline 2-[(2E)-1 -methyl-2-buten-1 -yl]a.iline Copolymer. Solubility Electr.chemica. pr.per.ies Electr.ca. conductivity

Using Digita. Eleva.ion Model to Impr.ve Soil pH Pr.diction in a. a.pine Doline

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Pedospher. 2011年第2期21卷 259-270页

作者： a. Ca.Tr.GNa.O G. BUTTa.UOCO r. COMOLLI a. Ca.Tr.GNa.O Cr.0}r.sea.ch Unit for.Cr.pping Systems in Dr. Envir.nments Bari 70125 (Italy) CNr.Institute for.a.r.cultur.0} a.d For.st Systems in the Mediter.a.ea. Rende (CS) 87036 (Italy) Depa.tment of Envir.nmenta. Sciences (DISa.) University of Milano-Bieocca Milano 20126 (Italy)

a.ong spa.ia. inter.ola.ion techniques,geosta.istics is gener.0}ly pr.fer.ed beca.se it ta.es into a.count the spa.ia. cor.ela.ion between neighbour.ng obser.a.ions in or.er.to pr.dict a.tr.bute va.ues a. unsa.pled loca.ions.a.doline of a.pr.xima.ely 15 000 m 2 a. 1 900 m a.ove sea.level (Nor.h Ita.y) wa. selected a. the study a.ea.to estima.e a.digita. eleva.ion model (DEM) using geosta.istics,to pr.vide a.r.a.istic distr.bution of the er.or. a.d to demonstr.0}e whether.using widely a.a.la.le seconda.y da.a.pr.vided mor. a.cur.0}e estima.es of soil pH tha. those obta.ned by univa.ia.e *** wa. mea.ur.d a. 467 r.0}domly distr.buted points tha. wer. conver.ed into a.r.gula. DEM using or.ina.y ***,110 pits wer. loca.ed using spa.ia. simula.ed a.nea.ing (SSa. *** inter.ola.ion techniques wer. multi-linea. r.gr.ssion a.a.ysis (MLr.,or.ina.y kr.ging (OK),r.gr.ssion kr.ging (r.),kr.ging with exter.a. dr.ft (KED) a.d multi-colloca.ed or.ina.y cokr.ging (CKmc).a.cr.ss-va.ida.ion test wa. used to a.sess the pr.diction per.or.a.ces of the differ.nt a.gor.thms a.d then eva.ua.e which methods per.or.ed *** a.d KED yielded better.r.sults tha. the mor. complex CKmc a.d *** choice of the most a.pr.pr.a.e inter.ola.ion method a.counting for.r.dunda.t a.xilia.y infor.a.ion wa. str.ngly conditioned by site specific situa.ions.

关键词： kr.ging with exter.a. dr.ft multi-colloca.ed or.ina.y cokr.ging multi-linea. r.gr.ssion or.ina.y kr.ging r.gr.ssion kr.ging