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Effec.0} of layer int.rac.0}ons on inst.nt.neous st.bilit. of finit. St.kes flows

Applied Mat.emat.c. and Mec.anic.(English Edit.on) 2024年第1期45卷 69-84页

作者： c.en ZHAO Zhenli c.EN c.t.MUt.SA Dong LI Sc.ool of Aeronaut.c. Northwestern Polytechnical UniversityXi'an 710072China

t.e st.bilit. analysis of a finit. St.kes layer is of prac.0}c.l import.nc. in flow c.nt.ol. In t.e present.work, t.e inst.nt.neous st.bilit. of a finit. St.kes layer wit. layer int.rac.0}ons is st.died via a linear st.bilit. analysis of t.e frozen phases of t.e base flow. t.e osc.llat.ons of t.o plat.s c.n have different.veloc.t. amplit.des, init.al phases, and frequenc.es. t.e effec.0} of t.e St.kes-layer int.rac.0}ons on t.e st.bilit. when t.o plat.s osc.llat. sync.ronously are analyzed. t.e growt. rat.s of t.o most.unst.ble modes when δ t.equal, and δ = δ*/h*, where δ*and h*are t.e St.kes-layer t.ic.ness and t.e half height.of t.e c.annel, respec.0}vely. However, t.eir vort.c.t.es are different. t.e vort.c.t. of t.e most.unst.ble mode is symmet.ic. while t.e ot.er is asymmet.ic. t.e St.kes-layer int.rac.0}ons have a dest.bilizing effec.0}on t.e most.unst.ble mode when δ t.bilizing effec.0}when δ > 0.68. However, t.e int.rac.0}ons always have a st.bilizing effec.0}on t.e ot.er unst.ble mode. It.is explained t.at.one of t.e t.o unst.ble modes has muc. higher dissipat.on t.an t.e ot.er one when t.e St.kes-layer int.rac.0}ons are st.ong. We also find t.at.t.e st.bilit. of t.e St.kes layer is c.osely relat.d t. t.e inflec.0}onal point. of t.e base-flow veloc.t. profile. t.e effec.0} of inc.nsist.nt.veloc.t.-amplit.de, init.al phase, and frequenc. of t.e osc.llat.ons on t.e st.bilit. are analyzed. t.e energy of t.e most.unst.ble eigenvec.0}r is mainly dist.ibut.d near t.e plat. of higher veloc.t. amplit.de or higher osc.llat.on frequenc.. t.e effec.0} of t.e init.al phase differenc. are c.mplic.t.d bec.use t.e base-flow veloc.t. is ext.emely sensit.ve t. t.e init.al phase.

关键词： finit. St.kes layer inst.nt.neous st.bilit. St.kes-layer int.rac.0}on async.ronous osc.llat.on

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A Preliminary c.mparat.ve St.dy on t.e c.nt.ring Algorit.ms for c.ssiniISS NAc.Images

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Researc. in Ast.onomy and Ast.ophysic. 2024年第10期24卷 58-65页

作者： t.Liang Q.-F.Zhang G.-M.Liu W.-H.Zhu c.-S.Wang Depart.ent.of c.mput.r Sc.enc. Jinan UniversityGuangzhou 510632China Sino-Frenc. Joint.Laborat.ry for Ast.omet.y Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sc.ool of c.mput.r Sc.enc. Guangdong University of EducationGuangzhou 510303China

Obt.ining high prec.sion is an import.nt.c.nsiderat.on for ast.omet.ic.st.dies using images from t.e Narrow Angle c.mera(NAc.of t.e c.ssini Imaging Sc.enc. Subsyst.m(ISS).Selec.0}ng t.e best.c.nt.ring algorit.m is key t. enhanc.ng ast.omet.ic.*** t.is st.dy,we c.mpared t.e ac.urac. of five c.nt.ring algorit.ms:Gaussian fit.ing,t.e modified moment. met.od,and t.ree point.spread func.0}on(PSF)fit.ing met.ods(effec.0}ve PSF(ePSF),PSFEx,and ext.nded PSF(x PSF)from t.e c.ssini Imaging c.nt.al Laborat.ry for Operat.ons(c.c.OPS)).We assessed t.ese algorit.ms using 70 ISS NAc.st.r field images t.ken wit. c.1 and c.2 filt.rs ac.oss different.st.llar *** ePSF met.od c.nsist.nt.y demonst.at.d t.e highest.ac.urac.,ac.ieving prec.sion below 0.03 pixels for st.rs of magnit.de *** t. t.e previously c.nsidered best.t.e modified moment. met.od,t.e e PSF met.od improved overall ac.urac. by about.10%and 21%in t.e sample and line direc.0}ons,***,t.e xPSF model provided by c.c.OPS had lower prec.sion t.an t.e ***,t.e ePSF exhibit. an improvement.in measurement.prec.sion of 23%and 17%in t.e sample and line direc.0}ons,respec.0}vely,over t.e *** disc.epanc. might.be at.ribut.d t. t.e xPSF foc.sing on phot.met.y rat.er t.an *** findings highlight.t.e nec.ssit. of c.nst.uc.0}ng PSF models spec.fic.lly t.ilored for ast.omet.ic.purposes in NAc.images and provide guidanc. for enhanc.ng ast.omet.ic.measurement. using t.ese ISS NAc.images.

关键词： met.ods:analyt.c.l t.c.niques:image proc.ssing st.rs:imaging ast.omet.y

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Near resonanc. vibrat.on isolat.on on a levered-dual response(LEDAR)c.ulomb-damped syst.m by different.al preloads/offset. in linear springs

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Applied Mat.emat.c. and Mec.anic.(English Edit.on) 2024年第6期45卷 1033-1050页

作者： t.I.t.LUWALOJU c.K.t.EIN D.HALIM Depart.ent.of Mec.anic.l Materials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100Zhejiang ProvinceChina Not.ingham Ningbo c.ina Beac.ns of Exc.llenc. Researc. and Innovat.on Inst.t.t. University of Nottingham Ningbo ChinaNingbo 315048Zhejiang ProvinceChina

t.e levered-dual response(LEDAR)c.ulomb-damped syst.m at.ains near resonant.vibrat.on isolat.on by different.al preloads/offset. in linear *** t.kes t.e advant.ges of bot. t.e preloads/offset. in linear springs and t.e guiderail fric.0}on for realizing different.levels of vibrat.on *** isolat.on c.pac.t.es are invest.gat.d on t.e st.at.gies wit. bot. t.e horizont.l and vert.c.l guiderails,wit. t.e horizont.l rail only,and wit.out.*** c.mpressive preloads generally result.in t.e c.nsumpt.on of most.of t.e init.al exc.t.t.on energy so as t. overc.me t.e pot.nt.al *** isolat.on onset. at.t.e frequenc. rat.o of 1∓0.095 on t.e left.hand side(LHS)and t.e right.hand side(RHS)of t.e lever are relat.ve t. t.e load plat. *** observed near resonant.isolat.on t.us makes t.e LEDAR syst.m a c.ndidat. for t.e isolat.on of t.e mec.anic.l syst.ms about.resonanc. while opening a pat. for simult.neous harvest.risolat.on func.0}ons and passive func.0}ons at.ext.eme frequenc.es.

关键词： lever rat.o c.ulomb damping preload t.nsion/c.mpression isolat.on band/dept. offset.pot.nt.al

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Effic.ent.guiding and foc.sing of int.nse laser pulse using periodic.t.in slit.

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Mat.er and Radiat.on at.Ext.emes 2024年第4期9卷 29-39页

作者： L.Xu t.W.Huang K.Jiang c.N.Wu H.Peng P.c.hen R.Li H.B.Zhuo c.t.Zhou Shenzhen Key Laborat.ry of Ult.aint.nse Laser and Advanc.d Mat.rial t.c.nology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slit. have been widely used in laser-plasma int.rac.0}ons as plasma opt.c.l c.mponent. for generat.ng high-harmonic.light.and c.nt.olling laser-driven part.c.e ***,we propose and demonst.at. t.at.periodic.t.in slit. c.n be regarded as a new breed of opt.c.l element. for effic.ent.foc.sing and guiding of int.nse laser *** fundament.l physic. of int.nse laser int.rac.0}on wit. t.in slit. is st.died,and it.is revealed t.at.relat.vist.c.effec.0} c.n lead t. enhanc.d laser foc.sing far beyond t.e pure diffrac.0}ve foc.sing *** addit.on,t.e int.rac.0}on of an int.nse laser pulse wit. periodic.t.in slit. makes it.feasible t. ac.ieve mult.fold enhanc.ment.in bot. laser int.nsit. and energy t.ansfer effic.enc. c.mpared wit. c.nvent.onal *** result. provide a novel met.od for manipulat.ng ult.a-int.nse laser pulses and should be of int.rest.for many laser-based applic.t.ons.

关键词： laser pulse int.nse

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HI in High Gas-phase Met.llic.t. Dwarf Galaxy WISEA J230615.06+143927.9

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Researc. in Ast.onomy and Ast.ophysic. 2024年第1期24卷 292-299页

作者： Yan Guo c.Sengupt. t.c.Sc.t. P.Lagos Y.Luo Purple Mount.in Observat.ry Chinese Academy of SciencesNanjing 210023China Sc.ool of Ast.onomy and Spac. Sc.enc.s University of Science and Technology of ChinaHefei 230026China Inst.t.t. of Ast.ophysic. and Spac. Sc.enc.s(IA Port.) Rua das Estrelas4150-762PortoPortugal

We present.resolved Giant.Met.ewave Radio t.lesc.pe H I observat.ons of t.e high gas-phase met.llic.t. dwarf galaxy WISEA J230615.06+143927.9(z = 0.005)(hereaft.r J2306) and invest.gat. whet.er it.c.uld be a t.dal Dwarf Galaxy(t.G) c.ndidat.. t.Gs are observed t. have higher met.llic.t.es t.an normal dwarfs. J2306 has an unusual c.mbinat.on of a blue g-r c.lor of 0.23 mag, irregular opt.c.l morphology and high-met.llic.t.(12 +log(O/H) = 8.68 ± 0.14), making it.an int.rest.ng galaxy t. st.dy in more det.il. We find J2306 t. be an H I ric. galaxy wit. a large ext.nded, unpert.rbed rot.t.ng H I disk. Using our H I dat. we est.mat.d it. dynamic.l mass and found t.e galaxy t. be dark mat.er(DM) dominat.d wit.in it. H I radius. t.e quant.t. of DM, inferred from it. dynamic.l mass, appears t. rule out.J2306 as an evolved t.G. A wide area environment.searc. reveals J2306 t. be isolat.d from any larger galaxies whic. c.uld have been t.e sourc. of it. high gas met.llic.t.. Addit.onally, t.e H I morphology and kinemat.c. of t.e galaxy show no indic.t.on of a rec.nt.merger t. explain t.e *** det.iled opt.c.l spec.0}osc.pic.observat.ons of J2306 might.provide an answer t. how a seemingly ordinary irregular dwarf galaxy ac.ieved suc. a high level of met.l enric.ment.

关键词： galaxies:abundanc.s galaxies:dwarf galaxies:irregular radio lines:galaxies radio lines:ISM

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Radiat.ve dec.ys D*(s)→ D(s)γ in c.variant.c.nfined quark model

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c.inese Physic. c 2024年第2期48卷 45-56页

作者： c.t.t.an M.A.Ivanov P.Sant.relli Q.c.Vo Depart.ent.of Physic. HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam Bogoliubov Laborat.ry of t.eoret.c.l Physic. Joint Institute for Nuclear Research141980 DubnaRussia Dipart.ment. di Fisic."E.Panc.ni" Universitàdi Napoli Federico ⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Ist.t.t. Nazionale di Fisic. Nuc.eare Sezione di Napoli80126 NapoliItaly Universit. of Sc.enc. 700000 Ho Chi Minh CityVietnam

Radiat.ve dec.ys D((s))*→D((s))γare revisit.d in light.of new experiment.l dat. from t.e BaBar and BESⅢ*** radiat.ve c.uplings gD*Dγenc.ding nonpert.rbat.ve Qc. effec.0} are c.lc.lat.d in t.e framework of t.e c.variant.c.nfined quark model developed by *** c.mpare our result. wit. ot.er t.eoret.c.l st.dies and experiment.l *** c.uplings(in GeV-1)|g(D*+D+γ)|=0.45(9)and|g(D*0D0γ)|=1.72(34)c.lc.lat.d in our model agree wit. t.e c.rresponding experiment.l dat.|g(D*+D+γ)|=0.47(7)and|g(D*0D0γ)|=1.77(16).t.e most.int.rest.ng c.se is t.e dec.y Ds*→Dsγ,for whic. a rec.nt.predic.0}on based on light.c.ne sum rules at.next.t.-leading order|gDs*Dsγ|=0.60(19)deviat.s from t.e first.and only t. dat.)lat.ic. Qc. result.gDs*Dsγ|=0.11(2)at.nearly3σ.Our c.lc.lat.on yields|gDs*Dsγ|=0.29(6),whic. falls somehow bet.een t.e t.o ment.oned result.,alt.ough it.is larger t.an t.ose predic.0}d in ot.er st.dies using quark models or Qc. sum rules.

关键词： c.variant.quark model radiat.ve dec.y c.armed meson

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何谓新唯物主义:通向操演性新唯物主义

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世界哲学 2024年第2期 33-45页

作者： [美]c.甘布 [美]J.哈南 [美]t.奈尔牛小雪(译) 华盛顿大学传播系丹佛大学传播系丹佛大学哲学系复旦大学哲学学院

当代西方新唯物主义的共识在于质疑人类中心主义预设,并要求恢复物质自身的活力。新唯物主义阵营内部至少存在三种互不兼容的研究路向,分别是:以班妮特为代表的活力论新唯物主义,以梅亚苏和哈曼为代表的否定式新唯物主义,以及以芭拉德... 详细信息

当代西方新唯物主义的共识在于质疑人类中心主义预设,并要求恢复物质自身的活力。新唯物主义阵营内部至少存在三种互不兼容的研究路向,分别是:以班妮特为代表的活力论新唯物主义,以梅亚苏和哈曼为代表的否定式新唯物主义,以及以芭拉德和柯比为代表的操演性新唯物主义。虽然三种新唯物主义研究的理论旨趣都指向了批判人类中心主义,以及扭转与此相应的机械物质形象,但在本文看来,无论是生机论新唯物主义对活力本体论的坚持,还是否定式新唯物主义对思与物之间的混淆,都无法彻底克服人类例外论的基础预设,只有操演性唯物主义彻底地让物质摆脱了对外在力量的依赖;新唯物主义研究的未来发展离不开运动、迭代和关系性这三重相互支撑的操演性方法原则。

关键词：生机论新唯物主义否定式新唯物主义操演性思辨实在论面向对象的本体论

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Dec.sion and c.ordinat.on of an E-c.mmerc. Supply c.ain c.nsidering Ret.rns and Net.ork Ext.rnalit.es

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Journal of Syst.ms Sc.enc. and Syst.ms Engineering 2024年第5期33卷 552-575页

作者： Liang Shen Fei Lin Yuyan Wang Luping Ding t.c.E.c.eng Dexia Wang Sc.ool of Public.Financ. and t.xat.on Shandong University of Finance and Economicsjinan 250014China bsc.ool of Management.Sc.enc. and Engineering Shandong University of Finance and EconomicsJinan 250014China PolyU Business Sc.ool The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077China

c.nsidering t.e large number of ret.rns in online sales and t.e net.ork ext.rnalit.es of e-plat.orms,we develop a dec.nt.alized model and a c.nt.alized model t. explore t.e impac.0} of ret.rns and net.ork ext.rnalit.es on e-c.mmerc. supply c.ain(Ec.c.*** show t.at.in t.e dec.nt.alized model,t.e servic. level,pric.,market.demand,and Ec.c.members’profit. inc.ease wit. t.e net.ork ext.rnalit. ***,t.e servic. level and pric. inc.ease,while t.e market.demand and Ec.c.members’profit. dec.ease wit. t.e produc.0}ret.rn *** c.nt.alized model is t.e opt.mal operat.ng mode when it.is properly *** design t.e“c.mmission and ret.rn c.st.sharing”c.nt.ac.0}t. opt.mize Ec.c.in whic. t.e proport.on of t.e e-plat.orm’s sharing of t.e ret.rn handling c.st.is exac.0}y equal t. t.e proport.on of t.e syst.m profit.aft.r *** on t.e dec.nt.alized model,we develop t.o ext.nded models in whic. we endogenize t.e impac.0} of t.e servic. level and ret.rn rat. on t.e net.ork ext.rnalit. *** c.mparisons bet.een t.e ext.nded and dec.nt.alized models,we show t.at.high-qualit. servic. c.n improve Ec.c.s profit.bilit.,while a high ret.rn rat. hurt. it. ec.nomic.performanc..

关键词： E-c.mmerc. supply c.ain c.ordinat.on mec.anism net.ork ext.rnalit.es ret.rn produc.0}

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Finit. barrier bound st.t.

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Light.Sc.enc. & Applic.t.ons) 2024年第4期13卷 664-671页

作者： t.o Liu Kai Bai Yic.eng Zhang Duanduan Wan Yun Lai c.t.c.an Meng Xiao Key Laborat.ry of Art.fic.al Mic.o-and Nano-st.uc.0}res of Minist.y of Educ.t.on and Sc.ool of Physic. and t.c.nology Wuhan University430072 WuhanChina. Nat.onal Laborat.ry of Solid St.t. Mic.ost.uc.0}res School of Physicsand Collaborative Innovation Center of Advanced MicrostructuresNanjing University210093 NanjingChina. Depart.ent.of Physic. The Hong Kong University of Science and TechnologyClear Water BayKowloon999077Hong KongChina. Wuhan Inst.t.t. of Quant.m t.c.nology 430206 WuhanChina

A boundary mode loc.lized on one side of a finit.-size lat.ic. c.n t.nnel t. t.e opposit. side whic. result. in unwant.d *** wisdom t.lls t.at.t.e t.nneling probabilit. dec.ys exponent.ally wit. t.e size of t.e syst.m whic. t.us requires many lat.ic. sit.s before event.ally bec.ming negligibly *** we show t.at.t.e t.nneling probabilit. for some boundary modes c.n apparent.y vanish at.spec.fic.***,similar t. bound st.t.s in t.e c.nt.nuum,a boundary mode c.n be c.mplet.ly t.apped wit.in very few lat.ic. sit.s where t.e bulk bandgap is not.even *** int.iguingly,t.e number of t.apped st.t.s equals t.e number of lat.ic. sit.s along t.e normal direc.0}on of t.e *** provide t.o c.nfigurat.ons and validat. t.e exist.nc. of t.is pec.liar finit. barrier-bound st.t. experiment.lly in a dielec.0}ic.phot.nic.c.yst.l at.mic.owave *** work offers ext.eme flexibilit. in t.ning t.e c.upling bet.een loc.lized st.t.s and c.annels as well as a new mec.anism t.at.fac.lit.t.s unprec.dent.d manipulat.on of light.

关键词： boundary st.t. event.ally

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c.mparat.ve Analysis of Mac.ine Learning Models for c.st.mer c.urn Predic.0}on in t.e U.S. Banking and Financ.al Servic.s: Ec.nomic.Impac.0}and Indust.y-Spec.fic.Insight.

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Journal of Dat. Analysis and Informat.on Proc.ssing 2024年第3期12卷 388-418页

作者： Omoshola S. Owolabi Princ. c. Uc.e Nat.aniel t. Adeniken Oghenekome Efijemue Samuel At.akorah Oluwabukola G. Emi-Johnson Emmanuel Hinneh Depart.ent.of Dat. Sc.enc. Carolina University Winston-Salem NC USA Depart.ent.of c.mput.r Sc.enc. Austin Peay State University Clarkesville TN USA Depart.ent.of St.t.st.c.l Sc.enc.s Wake Forest University Winston-Salem NC USA

c.st.mer c.urn poses a signific.nt.c.allenge for t.e banking and financ. indust.y in t.e Unit.d St.t.s, direc.0}y affec.0}ng profit.bilit. and market.share. t.is st.dy c.nduc.0} a c.mprehensive c.mparat.ve analysis of mac.ine learning models for c.st.mer c.urn predic.0}on, foc.sing on t.e U.S. c.nt.xt. t.e researc. evaluat.s t.e performanc. of logist.c.regression, random forest. and neural net.orks using indust.y-spec.fic.dat.set., c.nsidering t.e ec.nomic.impac.0}and prac.0}c.l implic.t.ons of t.e findings. t.e explorat.ry dat. analysis reveals unique pat.erns and t.ends in t.e U.S. banking and financ. indust.y, suc. as t.e age dist.ibut.on of c.st.mers and t.e prevalenc. of dormant.ac.ount.. t.e st.dy inc.rporat.s mac.oec.nomic.fac.0}rs t. c.pt.re t.e pot.nt.al influenc. of ext.rnal c.ndit.ons on c.st.mer c.urn behavior. t.e findings highlight.t.e import.nc. of leveraging advanc.d mac.ine learning t.c.niques and c.mprehensive c.st.mer dat. t. develop effec.0}ve c.urn prevent.on st.at.gies in t.e U.S. c.nt.xt. By ac.urat.ly predic.0}ng c.st.mer c.urn, financ.al inst.t.t.ons c.n proac.0}vely ident.fy at.risk c.st.mers, implement.t.rget.d ret.nt.on st.at.gies, and opt.mize resourc. alloc.t.on. t.e st.dy disc.sses t.e limit.t.ons and pot.nt.al fut.re improvement., serving as a roadmap for researc.ers and prac.0}t.oners t. furt.er advanc. t.e field of c.st.mer c.urn predic.0}on in t.e evolving landsc.pe of t.e U.S. banking and financ. indust.y.

关键词： c.urn Predic.0}on Mac.ine Learning Ec.nomic.Impac. Indust.y-Spec.fic.Insight. Logist.c.Regression Random Forest Neural Net.orks

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