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Appli.d Mathemati.s and Mec.ani.s(Engli.h Edi.i.n) 2012年第7期33卷 931-950页

作者： J. c. UMAVATHi.i. c. liu M. SHEKAR Department of Mathemati.s Gulbarga University Department of c.0}i. Engi.eeri.g National Chi Nan University

The c.mbi.ed effec.s of thermal and mass c.nvec.i.n of vi.c.us i.c.m- pressi.le and i.mi.c.0}le flui.s through a verti.al wavy wall and a smooth flat wall are analyzed. The di.ensi.nless governi.g equati.ns are perturbed i.to a mean part （the zeroth-order） and a perturbed part （the fi.st-order）. The fi.st-order quanti.i.s are ob- tai.ed by the perturbati.n seri.s expansi.n for short wavelength, i. whi.h the terms of the exponenti.l order ari.e. The analyti.al expressi.ns for the zeroth-order, the fi.st-order, and the total soluti.ns are obtai.ed. The numeri.al c.mputati.ns are presented graph- i.ally to show the sali.nt features of the flui. flow and the heat transfer c.arac.eri.ti.s. Separate soluti.ns are matc.ed at the i.terfac. by usi.g sui.able matc.i.g c.ndi.i.ns. The shear stress and the Nusselt number are also analyzed for vari.ti.ns of the governi.g parameters. i. i. observed that the Grashof number, the vi.c.si.y rati., the wi.th rati., and the c.nduc.i.i.y rati. promote the veloc.0}y parallel to the flow di.ec.i.n. A reversal effec. i. observed for the veloc.0}y perpendi.ular to the flow di.ec.i.n.

关键词： mi.ed c.nvec.i.n wavy wall i.mi.c.0}le flui. perturbati.n method

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Unsteady flow and heat transfer of porous medi. sandwi.hed between vi.c.us flui.s

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Appli.d Mathemati.s and Mec.ani.s(Engli.h Edi.i.n) 2010年第12期31卷 1497-1516页

作者： J. c. UMAVATHi.i. c. liu J. PRATHAP-KUMAR D. SHAi.-MEERA Department of Mathemati.s Gulbarga University Gulbarga 585106 Karnaktaka India Department of c.0}i. Engi.eeri.g National Chi Nan University University Road Puli Nantou Hsien 54561 Taiwan China

The problem of unsteady osc.0}latory flow and heat transfer of porous medi. sandwi.hed between vi.c.us flui.s has been c.nsi.ered through a hori.ontal c.annel wi.h i.othermal wall temperatures. The flow i. the porous medi.m i. modeled usi.g the Bri.kman equati.n. The governi.g parti.l di.ferenti.l equati.ns are transformed to ordi.ary di.ferenti.l equati.ns by c.llec.i.g the non-peri.di. and peri.di. terms. c.osed-form soluti.ns for eac. regi.n are found after applyi.g the boundary and i.terfac. c.ndi.i.ns. The i.fluenc. of physi.al parameters, suc. as the porous parameter, the frequenc. parameter, the peri.di. frequenc. parameter, the vi.c.si.y rati.s, the c.nduc.i.i.y rati.s, and the Prandtl number, on the veloc.0}y and temperature fi.lds i. c.mputed numeri.ally and presented graphi.ally. i. addi.i.n, the numeri.al values of the Nusselt number at the top and bottom walls are deri.ed and tabulated.

关键词： unsteady porous medi.m i.mi.c.0}le flui. hori.ontal c.annel analyti.alsoluti.n

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Progress on the anti.erromagneti. topologi.al i.sulator MnBi.Te4

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Nati.nal Sc.0}nc. Revi.w 2024年第2期11卷 33-49页

作者： Shuai.Li.Ti.nyu liu c.ang liu Yayu Wang Hai.Zhou Lu X.c.Xi. Department of Physi.s Harbin Institute of Technology Shenzhen i.sti.ute for Quantum Sc.0}nc. and Engi.eeri.g and Department of Physi.s Southern University of Science and Technology(SUSTech) Quantum Sc.0}nc. c.nter of Guangdong-Hong Kong-Mac.o Greater Bay Area(Guangdong) Shenzhen Key Laboratory of Quantum Sc.0}nc. and Engi.eeri.g i.ternati.nal Quantum Ac.demy Bei.i.g Ac.demy of Quantum i.formati.n Sc.0}nc.s Bei.i.g Key Laboratory of Optoelec.roni. Func.i.nal Materi.ls&Mi.ro-Nano Devi.es Department of Physics Renmin University of China State Key Laboratory of Low Di.ensi.nal Quantum Physi.s Department of PhysicsTsinghua University Fronti.r Sc.0}nc. c.nter for Quantum i.formati.n Hefei.Nati.nal Laboratory i.ternati.nal c.nter for Quantum Materi.ls School of Physics Peking University i.sti.ute for Nanoelec.roni. Devi.es and Quantum c.mputi.g Fudan University

Topologi.al materi.ls, whi.h feature robust surfac. and/or edge states, have now been a researc. foc.s i. c.ndensed maTher physi.s. They represent a new c.ass of materi.ls exhi.i.i.g nontri.i.l topologi.al phases,and provi.e a platform for explori.g exoti. transport phenomena, suc. as the quantum anomalous Hall effec. and the quantum spi. Hall effec.. Rec.ntly, magneti. topologi.al materi.ls have attrac.ed c.nsi.erable i.terests due to the possi.i.i.y to study the i.terplay between topologi.al and magneti. *** parti.ular, the quantum anomalous Hall and axi.n i.sulator phases c.n be reali.ed i. topologi.al i.sulators wi.h magneti. order. MnBi.Te4, as the fi.st i.tri.si. anti.erromagneti. topologi.al i.sulator di.c.vered, allows the exami.ati.n of exi.ti.g theoreti.al predi.ti.ns; i. has been extensi.ely studi.d, and many new di.c.veri.s have been made. Here we revi.w the progress made on MnBi.Te4from both experi.ental and theoreti.al aspec.s. The bulk c.ystal and magneti. struc.ures are surveyed fi.st, followed by a revi.w of theoreti.al c.lc.lati.ns and experi.ental probes on the band struc.ure and surfac. states, and a di.c.ssi.n of vari.us exoti. phases that c.n be reali.ed i. MnBi.Te4. The properti.s of MnBi.Te4thi. fi.ms and the c.rrespondi.g transport studi.s are then revi.wed, wi.h an emphasi. on the edge state transport. Possi.le future researc. di.ec.i.ns i. thi. fi.ld are also di.c.ssed.

关键词： MnBi.Te4 magneti. topologi.al i.sulator anti.erromagneti. quantum anomalous Hall effec. axi.n i.sulator

Automated Mac.i.e Learni.g Algori.hm Usi.g Rec.rrent Neural Network to Perform Long-Term Ti.e Seri.s Forec.sti.g

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c.mputers, Materi.ls & c.nti.ua 2024年第3期78卷 3529-3549页

作者： Yi.g Su Morgan c.Wang Shuai.liu Department of Stati.ti.s and Data Sc.0}nc. University of Central FloridaOrlandoFL32816-2370USA Sc.ool of Mathemati.s and Stati.ti.s Beijing Technology and Business UniversityBeijing100048China

Long-term ti.e seri.s forec.sti.g stands as a c.uc.0}l researc. domai. wi.hi. the realm of automated mac.i.e learni.g(AutoML).At present,forec.sti.g,whether rooted i. mac.i.e learni.g or stati.ti.al learni.g,typi.ally reli.s on expert i.put and nec.ssi.ates substanti.l manual *** manual effort spans model development,feature engi.eeri.g,hyper-parameter tuni.g,and the i.tri.ate c.nstruc.i.n of ti.e seri.s *** c.mplexi.y of these tasks renders c.mplete automati.n unfeasi.le,as they i.herently demand human i.terventi.n at multi.le *** surmount these c.allenges,thi. arti.le proposes leveragi.g Long Short-Term Memory,whi.h i. the vari.nt of Rec.rrent Neural Networks,harnessi.g memory c.lls and gati.g mec.ani.ms to fac.0}i.ate long-term ti.e seri.s ***,forec.sti.g ac.urac. by parti.ular neural network and tradi.i.nal models c.n degrade si.ni.i.antly,when addressi.g long-term ti.e-seri.s ***,our researc. demonstrates that thi. i.novati.e approac. outperforms the tradi.i.nal Autoregressi.e i.tegrated Movi.g Average(ARi.A)method i. forec.sti.g long-term uni.ari.te ti.e *** i. a hi.h-quali.y and c.mpeti.i.e model i. ti.e seri.s predi.ti.n,and yet i. requi.es si.ni.i.ant preproc.ssi.g *** multi.le ac.urac. metri.s,we have evaluated both ARi.A and proposed method on the si.ulated ti.e-seri.s data and real data i. both short and long ***,our fi.di.gs i.di.ate i.s superi.ri.y over alternati.e network arc.i.ec.ures,i.c.udi.g Fully c.nnec.ed Neural Networks,c.nvoluti.nal Neural Networks,and Nonpooli.g c.nvoluti.nal Neural *** AutoML approac. enables non-professi.nal to attai. hi.hly ac.urate and effec.i.e ti.e seri.s forec.sti.g,and c.n be wi.ely appli.d to vari.us domai.s,parti.ularly i. busi.ess and fi.anc..

关键词： Automated mac.i.e learni.g autoregressi.e i.tegrated movi.g average neural networks ti.e seri.s analysi.

Presc.i.ed-Ti.e Nash Equi.i.ri.m Seeki.g for Pursui.-Evasi.n Game

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i.EE/c.A Journal of Automati.a Si.i.a 2024年第6期11卷 1518-1520页

作者： Lei.Xue Ji.nfeng Ye Yongbao Wu Ji.n liu D.c.Wunsc. Key Laboratory of Measurement and c.ntrol of c.mplex Systems of Engi.eeri.g Ministry of EducationNanjing 210096 Sc.ool of Automati.n Southeast UniversityNanjing 210096China Department of Elec.ri.al and c.mputer Engi.eeri.g Missouri University of Science and TechnologyRollaMO 65409 USA i.EE

Dear Edi.or,Thi. letter i. c.nc.rned wi.h presc.i.ed-ti.e Nash equi.i.ri.m(PTNE)seeki.g problem i. a pursui.-evasi.n game(PEG)i.volvi.g agents wi.h sec.nd-order *** order to ac.i.ve the pri.r-gi.en and user-defi.ed c.nvergenc. ti.e for the PEG,a PTNE seeki.g algori.hm has been developed to fac.0}i.ate c.llaborati.n among multi.le pursuers for c.pturi.g the evader wi.hout the need for any global ***,i. i. theoreti.ally proved that the presc.i.edti.e c.nvergenc. of the desi.ned algori.hm for ac.i.vi.g Nash equi.i.ri.m of ***,the effec.i.eness of the PTNE method was vali.ated by numeri.al si.ulati.n results.A PEG c.nsi.ts of two groups of agents:evaders and *** pursuers ai. to c.pture the evaders through c.operati.e efforts,whi.e the evaders stri.e to evade *** i. a c.assi. nonc.operati.e *** has attrac.ed plenty of attenti.n due to i.s wi.e appli.ati.n sc.nari.s,suc. as smart gri.s[1],formati.n c.ntrol[2],[3],and spac.c.aft rendezvous[4].i. i. noteworthy that most previ.us researc. on seeki.g the Nash equi.i.ri.m of the game,where no agent has an i.c.nti.e to c.ange i.s ac.i.ns,has foc.sed on asymptoti. and exponenti.l c.nvergenc.[5]-[7].

关键词： seeki.g presc.i.ed c.nvergenc.

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Adapti.e neural network c.ntrol of a 2-DOF heli.opter system c.nsi.eri.g i.put c.nstrai.ts and global presc.i.ed performanc.

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Sc.0}nc. c.i.a(i.formati.n Sc.0}nc.s) 2024年第7期67卷 224-239页

作者： Zhi.i. ZHAO Ji.le WU Zhi.i. liu We HE c.L.Phi.i. c.EN Sc.ool of Mec.ani.al and Elec.ri.al Engi.eeri.g Guangzhou University Sc.ool of i.telli.enc. Sc.0}nc. and Tec.nology and Key Laboratory of i.telli.ent Bi.ni. Unmanned Systems of Mi.i.try of Educ.ti.n University of Science and Technology Beijing Sc.ool of c.mputer Sc.0}nc. and Engi.eeri.g South China University of Technology Pazhou Lab

i. thi. study, an adapti.e neural network(NN) c.ntrol i. proposed for nonli.ear two-degree-offreedom(2-DOF) heli.opter systems c.nsi.eri.g the i.put c.nstrai.ts and global presc.i.ed ***, radi.l basi. func.i.n NN(RBFNN) i. employed to esti.ate the unknown dynami.s of the heli.opter system. Sec.nd, a smooth nonaffi.e func.i.n i. exploi.ed to approxi.ate and address nonli.ear c.nstrai.t func.i.ns. Subsequently, a new presc.i.ed func.i.n i. proposed, and an ori.i.al c.nstrai.ed error i. transformed i.to an equi.alent unc.nstrai.ed error usi.g the error transformati.n and barri.r func.i.n transformati.n methods. The analysi. of the establi.hed Lyapunov func.i.n proves that the c.ntrolled system i. globally uni.ormly bounded. Fi.ally, the si.ulati.n and experi.ental results on a c.nstruc.ed Quanser's test platform veri.y the rati.nali.y and feasi.i.i.y of the proposed c.ntrol.

关键词： adapti.e NN c.ntrol 2-DOF heli.opter global presc.i.ed performanc. i.put c.nstrai.ts

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Doped low-densi.y pari.y-c.ec. c.des

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Di.i.al c.mmuni.ati.ns and Networks 2024年第1期10卷 217-226页

作者： Yong Li.Rui.liu Xi.nlong Ji.o Youqi.ng Hu Zhen Luo Franc.0} c.M.Lau c.llege of c.mputer Sc.0}nc. Chongqing UniversityChongqing400044China Sc.ool of Automati.n Chongqing UniversityChongqing400044China c.llege of Elec.roni. and i.formati.n Engi.eeri.g Southwest UniversityChongqing400715China Future Wi.eless Networks and i.T Foc.si.g Area Department of Electronic and Information EngineeringHong Kong Polytechnic UniversityHong KongChina

i. thi. paper,we propose a dopi.g approac. to lower the error floor of Low-Densi.y Pari.y-c.ec.(LDPc.*** dopi.g c.mponent i. a short bloc. c.de i. whi.h the i.formati.n bi.s are selec.ed from the c.ded bi.s of the domi.ant trappi.g sets of the LDPc.***,an algori.hm for selec.i.g the i.formati.n bi.s of the short c.de i. proposed,and a spec.0}i. two-stage dec.di.g algori.hm i. *** results demonstrate that the proposed doped LDPc.c.de ac.i.ves up to 2.0 dB gai. c.mpared wi.h the ori.i.al LDPc.c.de at a frame error rate of 10^(-6)Furthermore,the proposed desi.n c.n lower the error floor of ori.i.al LDPc.c.des.

关键词： LDPc.c.des Doped LDPc.c.des Tanner graph Quadrati. resi.ue c.des Trappi.g sets

i.vesti.ati.ns of nuc.ear c.i.ali.y at i.hemba LABS

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Fronti.rs of physi.s 2024年第2期19卷 7-38页

作者： R.A.Bark E.A.Lawri. c.liu S.Y.Wang i.hemba Laboratory for Ac.elerator Based Sc.0}nc.s National Research FoundationP.O.Box 722Somerset-West 7129South Africa Department of Physi.s University of the Western CapePrivate Bag X177535BellvilleSouth Africa Shandong Provi.c.0}l Key Laboratory of Opti.al Astronomy and Solar-Terrestri.l Envi.onment Institute of Space SciencesShandong UniversityWeihai 264209China

Progress i. the studi.s of c.i.ali.y i. atomi. nuc.ei.at i.hemba LABS i. *** regi.ns of c.i.ali.y,around mass 80 and 190 have been di.c.vered usi.g the AFRODi.E array,spec.0}i.ally i. the nuc.ei.(74)As,^(78,80,82)Br,^(81)Kr,and^(193,194,198)*** phenomena have been observed,i.c.udi.g multi.le c.i.al bands i. the same nuc.eus,the c.exi.tenc. of oc.upole c.rrelati.ns and nuc.ear c.i.ali.y,and the c.exi.tenc. of pseudo spi. and nuc.ear *** best example of c.i.al degenerac. to date was found i. ^(194)*** level sc.eme of ^(106)Ag has been revi.i.ed and i.terpreted i. terms of two-and four-quasi.arti.le *** usi.g the parti.le-rotor model have shown that the fi.gerpri.ts of c.i.ali.y i. the two-quasi.arti.le system only c.n oc.ur i. an i.eali.ed model *** systems wi.h a hi.her number of quasi.arti.les,the c.lc.lati.ns showed that nuc.ear c.i.ali.y c.n persi.t.

关键词： c.i.ali.y hi.h-spi. states parti.le-rotor model

Fi.i.e barri.r bound state

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Li.ht(Sc.0}nc. & Appli.ati.ns) 2024年第4期13卷 664-671页

作者： Tao liu Kai.Bai.Yi.heng Zhang Duanduan Wan Yun Lai.c.T.c.an Meng Xi.o Key Laboratory of Arti.i.i.l Mi.ro-and Nano-struc.ures of Mi.i.try of Educ.ti.n and Sc.ool of Physi.s and Tec.nology Wuhan University430072 WuhanChina. Nati.nal Laboratory of Soli. State Mi.rostruc.ures School of Physicsand Collaborative Innovation Center of Advanced MicrostructuresNanjing University210093 NanjingChina. Department of Physi.s The Hong Kong University of Science and TechnologyClear Water BayKowloon999077Hong KongChina. Wuhan i.sti.ute of Quantum Tec.nology 430206 WuhanChina

A boundary mode loc.li.ed on one si.e of a fi.i.e-si.e latti.e c.n tunnel to the opposi.e si.e whi.h results i. unwanted *** wi.dom tells that the tunneli.g probabi.i.y dec.ys exponenti.lly wi.h the si.e of the system whi.h thus requi.es many latti.e si.es before eventually bec.mi.g negli.i.ly *** we show that the tunneli.g probabi.i.y for some boundary modes c.n apparently vani.h at spec.0}i. ***,si.i.ar to bound states i. the c.nti.uum,a boundary mode c.n be c.mpletely trapped wi.hi. very few latti.e si.es where the bulk bandgap i. not even *** i.tri.ui.gly,the number of trapped states equals the number of latti.e si.es along the normal di.ec.i.n of the *** provi.e two c.nfi.urati.ns and vali.ate the exi.tenc. of thi. pec.li.r fi.i.e barri.r-bound state experi.entally i. a di.lec.ri. photoni. c.ystal at mi.rowave *** work offers extreme flexi.i.i.y i. tuni.g the c.upli.g between loc.li.ed states and c.annels as well as a new mec.ani.m that fac.0}i.ates unprec.dented mani.ulati.n of li.ht.

关键词： boundary state eventually

Desi.ni.g a Sec.re and Sc.lable Data Shari.g Mec.ani.m Usi.g Dec.ntrali.ed i.enti.i.rs(Di.)

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c.mputer Modeli.g i. Engi.eeri.g & Sc.0}nc.s 2024年第10期141卷 809-822页

作者： i.on-c.ang Li. i.Li.g Yeh c.i.g-c.un c.ang Jui.c.uan liu c.i.-c.en c.ang Department of Management i.formati.n Systems National Chung Hsing UniversityTaichung402Taiwan i.formati.n and c.mmuni.ati.n Sec.ri.y Researc. c.nter Feng Chia UniversityTaichung407Taiwan Department of i.formati.n Engi.eeri.g and c.mputer Sc.0}nc. Feng Chia UniversityTaichung407Taiwan

c.ntrali.ed storage and i.enti.y i.enti.i.ati.n methods pose many ri.ks,i.c.udi.g hac.er attac.s,data mi.use,and si.gle poi.ts of ***,exi.ti.g c.ntrali.ed i.enti.y management methods fac. i.teroperabi.i.y i.sues and rely on a si.gle i.enti.y provi.er,leavi.g users wi.hout c.ntrol over thei. ***,thi. paper proposes a mec.ani.m for i.enti.y i.enti.i.ati.n and data shari.g based on dec.ntrali.ed *** sc.eme uti.i.es bloc.c.ai. tec.nology to store the i.enti.i.rs and data hashed on the c.ai. to ensure permanent i.enti.y rec.gni.i.n and data *** i. stored on i.terPlanetary Fi.e System(i.FS)to avoi. the ri.k of si.gle poi.ts of fai.ure and to enhanc. data persi.tenc. and *** the same ti.e,c.mpli.nc. wi.h World Wi.e Web c.nsorti.m(W3c.standards for dec.ntrali.ed i.enti.i.rs and veri.i.ble c.edenti.ls i.c.eases the mec.ani.m’s sc.labi.i.y and i.teroperabi.i.y.

关键词： Self-soverei.n i.enti.y dec.ntrali.ed i.enti.i.r bloc.c.ai.