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Fronti.rs of Structural and Ci.i. Engi.eeri.g 2018年第3期12卷 352-360页

作者： Mohammed FARUQi.Oved i. MATA Franci.co AGUi.i.A Department of Ci.i. and Archi.ectural Engi.eeri.g Texas A&M University Kingsville TX 77843 USA

Concrete members hi.tori.ally have used ei.her pre-stressed steel or steel bars. i. recent years there has been an i.creased i.terest i. the use of fi.er rei.forced polymer （FRP） materi.ls. However, the flexure behavi.r of a hybri. system rei.forced by the combi.ati.n of pre-stressed steel and glass fi.er rei.forced （GFRP） i. sti.l relati.ely unknown. The purpose of thi. work i. to study thi.. Two slabs of 100 and 150-mi.li.eter thi.kness, wi.h a span of 2.1 m rei.forced wi.h both pre-stressi.g steel and GFRP were constructed and tested to fai.ure usi.g ACi.318-11 and ACi.440.1 R-15. The concrete had strength of 31 MPa and the slabs were respecti.ely rei.forced wi.h 5#4 bars and 3#5 bars. Each slab had 37.41 mm2 prestressi.g wi.e wi.h a fai.ure stress of 1722.5 MPa. The experi.ental flexural strength and deflecti.n of slabs were compared wi.h thei. respecti.e si.es theoreti.al slabs. The theoreti.al slabs were ei.her rei.forced wi.h pre-stressed steel or GFRP rebars, or a hybri. system. i. was found that the hybri. system produces better results.

关键词： Parti.l pre-stressi.g composi.e structures GFRP bars

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

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

作者： Anastasi. K. Eleftheri.dou Athanasi.s i. Karabi.i. Laboratory of Rei.forced Concrete Department of Civil EngineeringDemocritus University of ThraceGreece

A comprehensi.e study i. presented for empi.i.al sei.mi. vulnerabi.i.y assessment of typi.al structural types, representati.e of the bui.di.g stock of Southern Europe, based on a large set of damage stati.ti.s. The observati.nal database was obtai.ed from post-earthquake surveys carri.d out i. the area struck by the September 7, 1999 Athens earthquake. After analysi. of the collected observati.nal data, a uni.i.d damage database has been created whi.h compri.es 180,945 damaged bui.di.gs from/after the near-fi.ld area of the earthquake. The damaged bui.di.gs are classi.i.d i. speci.i. structural types, accordi.g to the materi.ls, sei.mi. codes and constructi.n techni.ues i. Southern Europe. The sei.mi. demand i. descri.ed i. terms of both the regi.nal macrosei.mi. i.tensi.y and the rati. αg/ao, where αg i. the maxi.um peak ground accelerati.n （PGA） of the earthquake event and ao i. the uni.ue value PGA that characteri.es each muni.i.ali.y shown on the Greek hazard map. The relati.e and cumulati.e frequenci.s of the 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 the produced and the exi.ti.g vulnerabi.i.y models.

关键词： sei.mi. vulnerabi.i.y observati.nal earthquake damage damage probabi.i.y matri.es (DPMs) vulnerabi.i.y curves post-earthquake surveys Athens earthquake 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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Chi.ese Journal of Electroni.s 2022年第4期31卷 683-689页

作者： Ni.SS Mussaab i. WANG Fang Li. Yuhuai 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 Zhengzhou Way Do Electroni.s Co.Ltd. Research i.sti.ute of i.dustri.l Technology Co.Ltd. Zhengzhou University i.sti.ute of Materi.ls and Systems for Sustai.abi.i.y Nagoya University

i. thi. paper, we numeri.ally demonstrated the 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 achi.ve lasi.g at a deep ultravi.let range at 263nm for edge emi.ti.g laser di.de. The laser di.de structure si.ulati.ns were conducted by usi.g the Crossli.htLASTi. 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 half have been achi.ved as well as the study of the effect of gradi.g engi.eeri.g/techni.ues at the electron blocki.g layer for li.early-graded-down and li.early-graded-up gradi.g techni.ues were also emphasi.ed. As a result, a maxi.um emi.ted power of 26 W,a mi.i.um threshold 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 the di.ferent dopi.g concentrati.ns and geometri.al di.tances were thoroughly observed and jotted down.

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

Domi.o Ti.i.g:A New Method of Real-Ti.e Conformi.g Mesh Constructi.n for Renderi.g Changeable Hei.ht Fi.lds

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

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

i. thi. paper we present a novel GPU-ori.nted method of creati.g an i.herently conti.uous tri.ngular mesh for ti.e-based renderi.g of regular hei.ht fi.lds. The method i. based on ti.i.g data-i.dependent semi.regular meshes of non-uni.orm structure, a techni.ue that i. qui.e di.ferent from other mesh ti.i.g approaches. A complete, memory effi.i.nt set of mesh patterns i. created by an off-li.e procedure and stored i.to the graphi.s adapter＇s memory at runti.e. At renderi.g ti.e, for each ti.e, one of the precomputed mesh patterns i. selected for renderi.g. The selected mesh pattern fi.s the requi.ed level of detai.s of the ti.e and ensures seamless connecti.n wi.h other adjacent mesh patterns, li.e i. a game of domi.oes. The scalabi.i.y potenti.l of the proposed method i. demonstrated through quadtree hi.rarchi.al groupi.g of ti.es. The effi.i.ncy i. veri.i.d by experi.ental results on hei.ht fi.lds for terrai. representati.n, where the method achi.ves hi.h frame rates and sustai.ed tri.ngle throughput on hi.h 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 the hei.ht fi.ld i. measured, and i. i. shown that the method i. very tolerant and consequently well tai.ored for appli.ati.ns deali.g wi.h rapi.ly changeable phenomena represented by hei.ht fi.lds.

关键词： graphi.s data structures and data types hei.ht fi.ld surface representati.n level of detai.s real-ti.e hei.htfi.ld mani.ulati.n vi.w-dependent renderi.g

Stress boundary layers i. the vi.coelasti. flow past a cyli.der i. a channel:li.i.i.g soluti.ns

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

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

The flow past a cyli.der i. a channel wi.h the aspect rati. of 2 ： 1 for the upper convected Maxwell （UCM） flui. and the Oldroyd-B flui. wi.h the vi.cosi.y rati. of 0.59 i. studi.d by usi.g the Galerki./Least-square fi.i.e element method and a p-adapti.e refi.ement algori.hm. A posteri.ri.error esti.ati.n i.di.ates that the stress-gradi.nt error domi.ates the total error. As the Deborah number, De, approaches 0.8 for the UCM flui. and 0.9 for the Oldroyd-B flui., strong stress boundary layers near the rear stagnati.n poi.t are formi.g, whi.h are characteri.ed by jumps of the stress-profi.es on the cyli.der wall and plane of symmetry, huge stress gradi.nts and rapi. decay of the gradi.nts across narrow thi.knesses. The ori.i. of the huge stress-gradi.nts can be traced to the purely elongati.nal flow behi.d the rear stagnati.n poi.t, where the posi.i.n at whi.h the elongati.n rate i. of 1/2De approaches the rear stagnati.n poi.t as the Deborah number approaches the cri.i.al values. These observati.ns i.ply that the cyli.der problem for the UCM and Oldroyd-B flui.s may have physi.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

Mi.ed convecti.n heat transfer i. hori.ontal channel fi.led wi.h nanoflui.s

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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2013年第3期34卷 339-350页

作者： Tao FAN Hang 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 Mathemati.s Babes-Bolyai University Cluj-Napoca R-400084 Romania

The lami.ar fully developed nanoflui. flow and heat transfer i. a hori.onal channel are i.vesti.ated. Hi.hly accurate soluti.ns for the temperature and nanopavti.le concentrati.n di.tri.uti.ns are obtai.ed. The effects of the Browni.n moti.n parameter Nb, the thermophoresi. parameter Nt, and the Lewi. number Le on the temperature and nanoparti.le concentrati.n di.tri.uti.ns are di.cussed. The current analysi. shows that the nanoparti.les can i.prove the heat transfer characteri.ti.s si.ni.i.antly for thi. flow problem.

关键词： nanoflui. flow hori.ontal channel mi.ed convecti.n heat transfer,homotopy analysi. method (HAM)

i.VERSE COEFFi.i.NT PROBLEMS FOR PARABOLi. HEMi.ARi.Ti.NAL i.EQUALi.i.S

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Acta Mathemati.a Sci.nti. 2011年第4期31卷 1318-1326页

作者：刘振海 i. Szntó Faculty of Mathemati.s and Computer Sci.nce Guangxi University for Nationalities Departamento de Matemti.a Universidad Tcnica Federico Santa María

Thi. paper i. devoted to the class of i.verse problems for a nonli.ear paraboli. hemi.ari.ti.nal i.equali.y. The unknown coeffi.i.nt of the operator depends on the gradi.nt of the soluti.n and belongs to a set of admi.si.le coeffi.i.nts. i. i. proved that the convergence of soluti.ns for the correspondi.g di.ect problems conti.uously depends on the coeffi.i.nt convergence. Based on thi. result the exi.tence of a quasi.oluti.n of the i.verse problem i. obtai.ed.

关键词： paraboli. hemi.ari.ti.nal i.equali.i.s i.verse coeffi.i.nt problems exi.tence of quasi.oluti.ns

Exact Soluti.ns of Klei.-Gordon Equati.n wi.h Scalar and Vector Rosen-Morse-Type Potenti.ls

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Chi.ese Physi.s Letters 2008年第8期25卷 2754-2757页

作者： A. Soylu O. Bayrak i. Boztosun Department of Physi.s Nigde University 51350 Nigde Turkey Department of Physi.s Bozok University 66200 Yozgat Turkey Department of Physi.s Erciyes University 38039 Kayseri Turkey

We obtai. an exact analyti.al soluti.n of the Klei. Gordon equati.n for the equal vector and scalar Rosen Morse and Eckart potenti.ls as well as the pari.y-ti.e （PT） symmetri. versi.n of the these potenti.ls by usi.g the asymptoti. i.erati.n method. Although these PT symmetri. potenti.ls are non-Hermi.i.n, the correspondi.g ei.envalues are real as a result of the PT symmetry.

关键词： ASYMPTOTi. i.ERATi.N METHOD NON-HERMi.i.N HAMi.TONi.NS PT-SYMMETRi. POTENTi.LS BOUND-STATES Ei.ENVALUE PROBLEMS Di.AC-EQUATi.N SCHRODi.GER-EQUATi.N Si.i.ARi.Y TRANSFORMATi.N REAL PARTi.LES

Laser Polari.ati.n Ori.ntati.ns i.(e,2e)Reacti.ns i. Atoms

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Chi.ese Physi.s Letters 2015年第8期32卷 62-65页

作者： Ajana i. Makhoute A. Khali. D. UFR de Physi.ue du Rayonnement et des i.teracti.ns Laser-Mati.re Faculté des SciencesUniversité Moulay Ismail

Second-order Born calculati.ns are performed to i.vesti.ate the tri.le di.ferenti.l cross secti.ns of coplanar asymmetri. laser-assi.ted （e, 2e） colli.i.ns for hydrogen and heli.m targets. The i.ci.ent electron i. consi.ered to be dressed by the laser fi.ld i. a nonperturbati.e manner by choosi.g the Volkov soluti.ns i. both the i.i.i.l and fi.al channels. Detai.ed calculati.ns of the scatteri.g ampli.udes are performed usi.g the Sturmi.n basi. expansi.n. The state of the ejected electron i. descri.ed by a Coulomb-Volkov wave functi.n. Two geometri.s are i.vesti.ated i. whi.h the laser polari.ati.n vector i. ei.her parallel to the i.ci.ent momentum of the projecti.e or parallel to the momentum transfer. Our numeri.al results show that, i. the low energy range, these two laser polari.ati.n ori.ntati.ns gi.e the same shape and the same order of magni.ude of laser-assi.ted i.ni.ati.n cross secti.ns of heli.m and hydrogen targets.

关键词： Laser Polari.ati.n Ori.ntati.ns i. e,2e)Reacti.ns i. Atoms

Li.ui. Fi.m on Unsteady Stretchi.g Sheet wi.h General Surface Temperature and Vi.cous Di.si.ati.n

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Chi.ese Physi.s Letters 2010年第11期27卷 5-8页

作者： R. C. Azi. i. Hashi. Faculty of Sci.nce and Technology Open University Malaysia 50480 Kuala Lumpur Malaysia Centre for Modelli.g and Data Analysi. School of Mathematical Sciences Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia

We study the effects of vi.cous di.si.ati.n on flow and heat transfer i. a thi. li.ui. fi.m on an unsteady stretchi.g sheet. A general surface temperature i. taken i.to consi.erati.n. The veloci.y and temperature fi.lds are solved usi.g the homotopy analysi. method. The results show that the i.creasi.g values of the Eckert number can i.crease temperature di.tri.uti.n and the heat transfer rate.

关键词： Soft matter li.ui.s and polymers Surfaces i.terfaces and thi. fi.ms