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Development of damage probabi.i.y matri.es based on Greek earth.uake damage data

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Earth.uake Engi.eeri.g and Engi.eeri.g Vi.rati.n 2011年第1期10卷 129-141页

作者： Anastasi. K. Elefth.ri.dou Ath.nasi.s i. Karabi.i. Laboratory of Rei.forced Concrete Department of Civil EngineeringDemocritus University of ThraceGreece

A compreh.nsi.e study i. presented for empi.i.al sei.mi. vulnerabi.i.y assessment of typi.al structural types, representati.e of th. bui.di.g stock of South.rn Europe, based on a large set of damage stati.ti.s. Th. observati.nal database was obtai.ed from post-earth.uake surveys carri.d out i. th. area struck by th. September 7, 1999 Ath.ns earth.uake. After analysi. of th. collected observati.nal data, a uni.i.d damage database h.s been created wh.ch.compri.es 180,945 damaged bui.di.gs from/after th. near-fi.ld area of th. earth.uake. Th. damaged bui.di.gs are classi.i.d i. speci.i. structural types, accordi.g to th. materi.ls, sei.mi. codes and constructi.n tech.i.ues i. South.rn Europe. Th. sei.mi. demand i. descri.ed i. terms of both.th. regi.nal macrosei.mi. i.tensi.y and th. rati. αg/ao, wh.re αg i. th. maxi.um peak ground accelerati.n （PGA） of th. earth.uake event and ao i. th. uni.ue value PGA th.t ch.racteri.es each.muni.i.ali.y sh.wn on th. Greek h.zard map. Th. relati.e and cumulati.e frequenci.s of th. di.ferent damage states for each.structural type and each.i.tensi.y level are computed i. terms of damage rati.. Damage probabi.i.y matri.es （DPMs） and vulnerabi.i.y curves are obtai.ed for speci.i. structural types. A compari.on analysi. i. fulfi.led between th. produced and th. exi.ti.g vulnerabi.i.y models.

关键词： sei.mi. vulnerabi.i.y observati.nal earth.uake damage damage probabi.i.y matri.es (DPMs) vulnerabi.i.y curves post-earth.uake surveys Ath.ns earth.uake exi.ti.g bui.di.gs

A Desi.n and Comparati.e i.vesti.ati.n of Graded AlxGa1–xN EBL for W-B0.375Ga N/W-B0.45GaN Edge Emi.ti.g Laser Di.de on AlN Substrate

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Ch.nese Journal of Electroni.s 2022年第4期31卷 683-689页

作者： Ni.SS Mussaab i. WANG Fang Li. Yuh.ai Nati.nal Center for i.ternati.nal Joi.t Research.of Electroni. Materi.ls and Systems International Joint-Laboratory of Electronic Materials and Systems of Henan Province School of Information EngineeringZhengzhou University Zh.ngzh.u Way Do Electroni.s Co.Ltd. Research.i.sti.ute of i.dustri.l Tech.ology Co.Ltd. Zhengzhou University i.sti.ute of Materi.ls and Systems for Sustai.abi.i.y Nagoya University

i. th.s paper, we numeri.ally demonstrated th. possi.i.i.y of usi.g wurtzi.e boron galli.m ni.ri.e(W-BGa N) as acti.e layers(quantum well and quantum barri.rs) along wi.h.alumi.um galli.m ni.ri.e(Al Ga N) to ach.eve lasi.g at a deep ultravi.let range at 263nm for edge emi.ti.g laser di.de. Th. laser di.de structure si.ulati.ns were conducted by usi.g th. Crossli.h.LASTi. software wi.h.a self-consi.tency model for vari.s quanti.y calculati.ns. Moreover, multi.le desi.ned structures such.as full and h.lf h.ve been ach.eved as well as th. study of th. effect of gradi.g engi.eeri.g/tech.i.ues at th. electron blocki.g layer for li.early-graded-down and li.early-graded-up gradi.g tech.i.ues were also emph.si.ed. As a result, a maxi.um emi.ted power of 26 W,a mi.i.um th.esh.ld current of 308 m A, a slope effi.i.ncy of 2.82 W/A, and a mi.i.um p-type resi.ti.i.y of0.228 Ω·cm from th. di.ferent dopi.g concentrati.ns and geometri.al di.tances were th.rough.y observed and jotted down.

关键词： Edge emi.ti.g laser di.des (EELD) Semi.onducti.g alumi.um compounds h.terojuncti.n semi.onductor devi.es Quantum wells

Domi.o Ti.i.g:A New Meth.d of Real-Ti.e Conformi.g Mesh.Constructi.n for Renderi.g Ch.ngeable h.i.h. Fi.lds

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Journal of Computer Sci.nce & Tech.ology 2011年第6期26卷 971-987页

作者： Dorde M. Durdevi. i.or i. Tartalja Sch.ol of Electri.al Engi.eeri.g University of Belgrade

i. th.s paper we present a novel GPU-ori.nted meth.d of creati.g an i.h.rently conti.uous tri.ngular mesh.for ti.e-based renderi.g of regular h.i.h. fi.lds. Th. meth.d i. based on ti.i.g data-i.dependent semi.regular mesh.s of non-uni.orm structure, a tech.i.ue th.t i. qui.e di.ferent from oth.r mesh.ti.i.g approach.s. A complete, memory effi.i.nt set of mesh.patterns i. created by an off-li.e procedure and stored i.to th. graph.cs adapter＇s memory at runti.e. At renderi.g ti.e, for each.ti.e, one of th. precomputed mesh.patterns i. selected for renderi.g. Th. selected mesh.pattern fi.s th. requi.ed level of detai.s of th. ti.e and ensures seamless connecti.n wi.h.oth.r adjacent mesh.patterns, li.e i. a game of domi.oes. Th. scalabi.i.y potenti.l of th. proposed meth.d i. demonstrated th.ough.quadtree h.erarch.cal groupi.g of ti.es. Th. effi.i.ncy i. veri.i.d by experi.ental results on h.i.h. fi.lds for terrai. representati.n, wh.re th. meth.d ach.eves h.gh.frame rates and sustai.ed tri.ngle th.ough.ut on h.gh.resoluti.n vi.wports wi.h.sub-pi.el error tolerance. Frame rate sensi.i.i.y to real-ti.e modi.i.ati.ns of th. h.i.h. fi.ld i. measured, and i. i. sh.wn th.t th. meth.d i. very tolerant and consequently well tai.ored for appli.ati.ns deali.g wi.h.rapi.ly ch.ngeable ph.nomena represented by h.i.h. fi.lds.

关键词： graph.cs data structures and data types h.i.h. fi.ld surface representati.n level of detai.s real-ti.e h.i.h.fi.ld mani.ulati.n vi.w-dependent renderi.g

Stress boundary layers i. th. vi.coelasti. flow past a cyli.der i. a ch.nnel:li.i.i.g soluti.ns

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Acta Mech.ni.a Si.i.a 2005年第4期21卷 311-321页

作者： Yurun Fan h.ayong Yang Roger i. Tanner State Key Laboratory of Flui. Power Control and Transmi.si.n Zhejiang University Hangzhou 310027 China Sch.ol of Aerospace Mechanical and Mechatronic EngineeringUniversity of Sydney NSW 2006 Australia

Th. flow past a cyli.der i. a ch.nnel wi.h.th. aspect rati. of 2 ： 1 for th. upper convected Maxwell （UCM） flui. and th. Oldroyd-B flui. wi.h.th. vi.cosi.y rati. of 0.59 i. studi.d by usi.g th. Galerki./Least-square fi.i.e element meth.d and a p-adapti.e refi.ement algori.h.. A posteri.ri.error esti.ati.n i.di.ates th.t th. stress-gradi.nt error domi.ates th. total error. As th. Deborah.number, De, approach.s 0.8 for th. UCM flui. and 0.9 for th. Oldroyd-B flui., strong stress boundary layers near th. rear stagnati.n poi.t are formi.g, wh.ch.are ch.racteri.ed by jumps of th. stress-profi.es on th. cyli.der wall and plane of symmetry, h.ge stress gradi.nts and rapi. decay of th. gradi.nts across narrow th.cknesses. Th. ori.i. of th. h.ge stress-gradi.nts can be traced to th. purely elongati.nal flow beh.nd th. rear stagnati.n poi.t, wh.re th. posi.i.n at wh.ch.th. elongati.n rate i. of 1/2De approach.s th. rear stagnati.n poi.t as th. Deborah.number approach.s th. cri.i.al values. Th.se observati.ns i.ply th.t th. cyli.der problem for th. UCM and Oldroyd-B flui.s may h.ve ph.si.al li.i.i.g Deborah.numbers of 0.8 and 0.9, respecti.ely.

关键词： Vi.coelasti. flow Stress boundary layer Flow around cyli.der Adapti.e fi.i.e element

Adapti.e Functi.nal Projecti.e Lag Synch.oni.ati.n of a h.perch.oti. Rossler System

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Ch.nese Ph.si.s Letters 2009年第9期26卷 69-72页

作者： Tae h. Lee Ju h. Park Nonli.ear Dynami.s Group Department of Electrical Engineering Yeungnam University 214-1 Dae-Dong Kyongsan 712-749 Republic of Korea

We explai. th. functi.nal projecti.e lag synch.oni.ati.n of a h.perch.oti. Rossler system wi.h.four unknown parameters, wh.re th. output of th. master system lags beh.nd th. output of th. slave system proporti.nally. Based on Lyapunov stabi.i.y th.ory, an acti.e control meth.d and adapti.e control law are employed to make th. states of two h.perch.oti. Rossler systems asymptoti.ally synch.oni.ed. Fi.ally, some numeri.al examples are provi.ed to sh.w th. effecti.eness of our results.

关键词： No Engli.h.Keyword

A structural topologi.al opti.i.ati.n meth.d for multi.di.placement constrai.ts and any i.i.i.l topology confi.urati.n

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Acta Mech.ni.a Si.i.a 2010年第5期26卷 735-744页

作者： J. h. Rong J. h. Yi Sch.ol of Automoti.e and Mech.ni.al Engi.eeri.g Changsha University of Science and TechnologyChangsha 410076 China

i. densi.y-based topologi.al desi.n, one expects th.t th. fi.al result consi.ts of elements ei.h.r black （soli. materi.l） or wh.te （voi.）, wi.h.ut any grey areas. Moreover, one also expects th.t th. opti.al topology can be obtai.ed by starti.g from any i.i.i.l topology confi.urati.n. An i.proved structural topologi.al opti.i.ati.n meth.d for multi.i.placement constrai.ts i. proposed i. th.s paper. i. th. proposed meth.d, th. wh.le opti.i.ati.n process i. di.i.ed i.to two opti.i.ati.n adjustment ph.ses and a ph.se transferri.g step. Fi.stly, an opti.i.ati.n model i. bui.t to deal wi.h.th. vari.d di.placement li.i.s, desi.n space adjustments, and reasonable relati.ns between th. element sti.fness matri. and mass and i.s element topology vari.ble. Secondly, a procedure i. proposed to solve th. opti.i.ati.n problem formulated i. th. fi.st opti.i.ati.n adjustment ph.se, by starti.g wi.h.a small desi.n space and advanci.g to a larger dei.n space. Th. desi.n space adjustments are automati. wh.n th. desi.n domai. needs expansi.ns, i. wh.ch.th. convergence of th. proposed meth.d wi.l not be affected. Th. fi.al topology obtai.ed by th. proposed procedure i. th. fi.st opti.i.ati.n ph.se, can approach.to th. vi.i.i.y of th. opti.um topology. Th.n, a h.uri.ti. algori.h. i. gi.en to i.prove th. effi.i.ncy and make th. desi.ned structural topology black/wh.te i. both.th. ph.se transferri.g step and th. second opti.i.ati.n adjustment ph.se. And th. opti.um topology can fi.ally be obtai.ed by th. second ph.se opti.i.ati.n adjustments. Two examples are presented to sh.w th.t th. topologi.s obtai.ed by th. proposed meth.d are of very good 0/1 desi.n di.tri.uti.n property, and th. computati.nal effi.i.ncy i. enh.nced by reduci.g th. element number of th. desi.n structural fi.i.e model duri.g two opti.i.ati.n adjustment ph.ses. And th. examples also sh.w th.t th.s meth.d i. robust and practi.able.

关键词： Topologi.al opti.i.ati.n Di.placement constrai.t Conti.uum structure Desi.n space adjustment Rati.nal approxi.ati.n materi.l model

Low-lyi.g states of ^(184)W and ^(184)Os nuclei

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Ch.nese Ph.si.s C 2013年第3期37卷 37-40页

作者： F. i. Sh.RRAD h.wa Y. Abdullah.N. AL-DAh.N N. M. Umran A. A. OKh.NOV h. Abu KASSi. Department of Ph.si.s Faculty of ScienceUniversity of Malaya Department of Ph.si.s College of ScienceUniversity of Kerbala Department of Ph.si.s Universiti Teknologi Malaysia Department of Ph.si.s College of Science EducationSalahaddin University

Th. energy levels, transi.i.n energy, B （E2） values,i.tri.si. quadrupole moment Q_0 and potenti.l energy surface for even-even ^（184）W and ^（184）Os nuclei.were calculated usi.g i.M-1. Th. predi.ted energy levels, transi.i.n energy, B（E2） values and i.tri.si. quadrupole moment Q_0 results are reasonably consi.tent wi.h.th. experi.ental data. A contour plot of th. potenti.l energy surfaces sh.ws th.t two i.teresti.g nuclei.are deformed and h.ve rotati.nal ch.racters.

关键词： i.M-1 low-lyi.g state potenti.l energy surface quadrupole moment

AN OUTLi.E OF Th. VARi.Ti.S OF Th. SECOND-ORDER SYSTEMS SCi.NCES

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Journal of Systems Sci.nce and Systems Engi.eeri.g 2017年第3期26卷 383-412页

作者： Karl h. Muller i.ternati.nal Academy for Systems Sci.nce and Cyberneti.s Steinbeis Transfer Center New Cybernetics Vienna Austria

Th. systems sci.nces are based on a uni.ersal language of systems wh.ch.can be used wi.h.n most academi. di.ci.li.es i. th.i. endeavors for explori.g th. world. Currently, systems sci.nces cover a wi.e vari.ty of di.ferent approach.s li.e complex adapti.e systems, resi.i.nt systems or systems engi.eeri.g. One of th. future extensi.ns of th. systems sci.nces comes th.ough.th. appli.ati.ns of second-order systems sci.nce as a new fi.ld of reflexi.e studi.s on fi.st-order systems sci.nce. Th.s arti.le provi.es a general background on th. relati.ns of fi.st-order sci.nce and second-order sci.nce i. general and th.n goes on to sketch.a basi. outli.e for th. second-order systems sci.nces and th.i. potenti.ls for quali.y control and for i.novati.ns for th. fi.st-order systems sci.nces.

关键词： Opti.i.ati.n

Mi.ed convecti.n h.at transfer i. h.ri.ontal ch.nnel fi.led wi.h. nanoflui.s

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Appli.d Math.mati.s and Mech.ni.s(Engli.h.Edi.i.n) 2013年第3期34卷 339-350页

作者： Tao FAN h.ng XU i. POP State Key Laboratory of Ocean Engi.eeri.g School of Naval ArchitectureOcean and Civil Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. China Post-Doctoral Research.Stati.n Jiangnan Shipyard Group Co. Ltd. Shanghai 201913 P. R. China Department of Math.mati.s Babes-Bolyai University Cluj-Napoca R-400084 Romania

Th. lami.ar fully developed nanoflui. flow and h.at transfer i. a h.ri.onal ch.nnel are i.vesti.ated. h.gh.y accurate soluti.ns for th. temperature and nanopavti.le concentrati.n di.tri.uti.ns are obtai.ed. Th. effects of th. Browni.n moti.n parameter Nb, th. th.rmoph.resi. parameter Nt, and th. Lewi. number Le on th. temperature and nanoparti.le concentrati.n di.tri.uti.ns are di.cussed. Th. current analysi. sh.ws th.t th. nanoparti.les can i.prove th. h.at transfer ch.racteri.ti.s si.ni.i.antly for th.s flow problem.

关键词： nanoflui. flow h.ri.ontal ch.nnel mi.ed convecti.n h.at transfer,h.motopy analysi. meth.d (h.M)