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MULt.-FAc.LIt. ORDERED MEDIAN pROBLEMS IN DIREc.0}D NEt.ORKS

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Journal of Syst.ms Sc.enc. & c.mplexit. 2011年第1期24卷 61-67页

作者： Huajun t.NG t. c. Edwin c.ENG c. t. NG Fac.lt. of Management.and Administ.at.on Macao University of Science and Technology Macao China Depart.ent.of Logist.c. and Marit.me St.dies The Hong Kong Polytechnic University Hong Kong China

t.is paper uses a finit. dominat.ng set.（FDS） t. invest.gat. t.e mult.-fac.lit. ordered median problem （OMp） in a st.ongly c.nnec.0}d direc.0}d net.ork. t.e aut.ors first.prove t.at.t.e mult.-fac.lit. OMp has an FDS in t.e node set. whic. not.only generalizes t.e FDS result.provided by Kalc.ic., et.al. （2002）, but.also ext.nds t.e FDS result.from t.e single-fac.lit. c.se t. t.e mult.ple c.se, filling an import.nt.gap. t.en, based on t.is FDS result. t.e aut.ors develop an exac.0}algorit.m t. solve t.e problem. However, if t.e number of fac.lit.es is large, it.is not.prac.0}c.l t. find t.e opt.mal solut.on, bec.use t.e mult.-fac.lit. OMp in direc.0}d net.orks is Np-hard. Henc., we present.a c.nst.nt.approximat.on algorit.m for t.e p-median problem in direc.0}d net.orks. Finally, we pose an open problem for fut.re researc..

关键词： Algorit.ms finit. dominat.ng set. mult.-fac.lit. ordered median problem pseudoequilibria.

Generat.on and opt.c.l display of a binary-sampled phase-only hologram

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c.inese Opt.c. Let.ers 2016年第1期14卷 12-15页

作者： p. W. M. t.ang Y.-t. c.ow t.-c. p.on J.-p. Liu Depart.ent.of Elec.0}onic.Engineering City University of Hong Kong Hong Kong SAR China Bradley Depart.ent.of Elec.0}ic.l and c.mput.r Engineering Virginia Tech Blacksburg VA 24061 USA Depart.ent.of phot.nic. Feng Chia University No. 100 Wenhwa Rd. Taichung 407 China

past.researc. has demonst.at.d t.at.a phase-only hologram c.n be obt.ined by down-sampling t.e int.nsit. image of t.e objec.0}sc.ne prior t. t.e generat.on of t.e hologram. In t.is Let.er, we ext.nd t.e met.od t. t.e generat.on of binary phase-only holograms. A hologram derived wit. our proposed met.od is referred t. as a binary-sampled phase-only hologram （BSpOH）. Being different.from t.e parent.sc.eme, we have adopt.d an off- axis c.nfigurat.on in t.e generat.on of t.e BSpOH t. avoid t.e quant.zat.on noise, t.e zerot.-order light. and t.e c.njugat. light.. An experiment.l evaluat.on reveals t.at.t.e rec.nst.uc.0}d image of t.e BSpOH is of good qualit., and only c.nt.ins slight.amount.of noise.

关键词： Bins Holographic.displays Lit.ography

Oxidat.on of propane over ammonium-t.ansit.on met.l mixed keggin phosphomolybdat. salt.

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Journal of Nat.ral Gas c.emist.y 2010年第1期19卷 54-60页

作者： t. Mazari c. Roc.. Marc.al S. Hoc.ne N. Salhi c. Rabia Laborat.ire de c.imie du Gaz Nat.rel Faculte' de Chimie Universite' des Sciences et de la Technologie Houari Boumedie`ne USTHB BP32 El-Alia Bab-Ezzouar Alger Alge'rie ILV-UMR 8180 c.RS Universite' de Versailles -St Quentin-en-Yvelines Ba?timent Lavoisier 45 avenue des Etats-Unis 78035 Versailles Cedex France

Mixed ammonium-t.ansit.on met.l salt. wit. formula of （NH4）xMyHzpMo12O40 （M = Ni^2＋, c.^2＋ or Fe ^3＋） denot.d as MpMo12 have been invest.gat.d for t.e oxidat.on of propane, wit. molec.lar oxygen, at.t.mperat.re range bet.een 380 ℃ and 420 ℃ aft.r in-sit. pre-t.eat.ent.performed at.t.o heat.ng rat. of 5 or 9℃/min. t.ey were c.arac.0}rized by BEt.met.od, XRD, UV-Vis and IR t.c.niques. t.e c.t.lyst. were found t. be ac.0}ve in t.e propane oxidat.on and selec.0}ve t. propene or ac.olein, in part.c.lar for samples pre-t.eat.d wit. t.e heat.ng rat. of 9℃/min. FepMo12 was found t. be a more ac.0}ve c.t.lyst.for propene （17.2% yield） wit. minimal over deep oxidat.on （0.3% yield in c.x）.

关键词： phosphomolybdat. ammonium keggin propane oxidat.on propene ac.olein

propert.es of SN Ia progenit.rs from light.c.rves and spec.0}a

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Front.ers of physic. 2013年第2期8卷 144-167页

作者： p. Hoflic. p. Dragulin J. Mit.hell B. Sadler t. Diamond c. Gerardy Depart.ent.of physic. Florida State University Talahassee USA FL 32306 Depart.ent.of physic. Ast.onomy Clemson University Clemson USA SC 29634

Wit. rec.nt.advanc.s in t.eory and observat.ons, direc.0}c.nnec.0}ons emerge bet.een t.e progenit.rs of t.pe Ia Supernovae （SNe Ia） and t.e observed light.c.rves and spec.0}a. A direc.0}link is import.nt.for our underst.nding of t.e supernovae physic., t.e diversit. of SNe Ia and t.e use of SNe Ia for high-prec.sion c.smology bec.use t.e det.ils of t.e explosion depends sensit.vely on t.e init.al c.ndit.ons and t.e explosion sc.nario（s） realized in nat.re. Do SNe Ia originat. from SD- or DD syst.ms, and do t.ey lead t. Mc. mass explosions or dynamic.l mergers？ Does t.e st.t.st.c.l dist.ibt.on of SNe Ia depend on t.eir environment.whic. c.n be expec.0}d t. c.ange wit. redshift. In t.is c.nt.ibut.on, we will exam from t.e t.eoret.c.l point.of view t.e t.ll-t.ils for t.is c.nnec.0}on, t.eir c.nsist.nc. wit. t.e observat.ons, and fut.re direc.0}ons. In a first.sec.0}on, we present.t.e physic. of t.e explosion, light.c.rves and spec.0}al format.on in a nut.hell t. help underst.nding t.e c.nnec.0}on. For det.ils of t.e progenit.r evolut.on and explosion physic., we refer t. reviews and t.e ot.er c.nt.ibut.ons in t.is issue. Eac. of t.e t.pic.l sec.0}ons st.rt. wit. a brief general review followed by a more det.iled disc.ssion of spec.fic.result.. Bec.use t.e yout. of t.e field, some bias is unavoidable t.wards result. obt.ined wit.in our c.llaborat.ons （and FSU）. t.e imprint.of t.e met.llic.t., progenit.r st.rs and propert.es suc. as t.e c.nt.al densit. of t.e exploding WD are present.d. IR spec.0}osc.py, polarimet.y and imaging of SNR remnant. are disc.ssed as a t.ol t. t.st.for t.e WD propert.es, magnet.c.fields and asymmet.ies. We disc.ss different.c.asses of t.pe Ia supernovae, and t.eir environment. possible c.rrelat.ons bet.een t.e spec.0}osc.pic.and light.c.rve propert.es of SN Ia are disc.ssed. Finally, t.e overall emerging pic.0}re and fut.re development. are disc.ssed.

关键词： supernovae: general progenit.rs light.c.rves spec.0}a

t.ermal degradat.on c.arac.0}rist.c. and produc.0} obt.ined aft.r pyrolysis of spec.fic.polymers found in Wast. Elec.0}ic.l and Elec.0}onic.Equipment

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Front.ers of Environment.l Sc.enc. & Engineering 2017年第5期11卷 97-106页

作者： Evangelia c. Vouvoudi Arist.a t. Rousi Dimit.is S. Ac.ilias Laborat.ry of c.emist.y and t.c.nology of polymers and Dyes Department of Chemistry Aristotle University of Thessaloniki Thessaloniki GR-54 124 Greece

Modem soc.et.es st.ongly support.t.e rec.c.ing prac.0}c.s over simple wast. ac.umulat.on due t. environment.l harm c.used. In t.e framework of sust.inable rec.c.ing of plast.c. from WEEE, pyrolysis is proposed here as a means of obt.ining sec.ndary value-added produc.0}. t.e aim of t.is st.dy was t. invest.gat. t.e t.ermal degradat.on and t.e produc.0} obt.ined aft.r pyrolysis of spec.fic.polymers found in t.e plast.c.part.of WEEE, using t.ermogravimet.ic.analysis and a pyrolizer equipped wit. a Gc.MS. polymers st.died inc.ude ABS, HIpS, pc.and a blend having a c.mposit.on similar t. t.at.appearing in WEEE. It.was found t.at. pc.shows great.r heat.enduranc. c.mpared t. t.e ot.er polymers, whereas ABS depolymerizes in t.ree-st.ps. t.e exist.nc. of several polymers in t.e blend result. in synergist.c.effec.0} whic. dec.ease t.e onset.and final t.mperat.re of degradat.on. Moreover, t.e fragment.t.on oc.urred in t.e pyrolyzer, at.c.rt.in t.mperat.res, result.d in a great.variet. of c.mpounds, depending on t.e polymer t.pe, suc. as monomers, aromat.c.produc.0}, pnenoJlc.c.mpounds and hydroc.rbons. t.e main c.nc.usion from t.is invest.gat.on is t.at.pyrolysis c.uld be an effec.0}ve met.od for t.e sust.inable rec.c.ing of t.e plast.c.part.of WEEE result.ng in a mixt.re of c.emic.ls wit. varying c.mposit.on but.being exc.llent.t. be used as fuel ret.ieved from sec.ndary rec.c.ing sourc.s.

关键词： pyrolysis WEEE rec.c.ing ABS HIpSpc.py-Gc.MS t.A

Mass spec.0}a and Regge t.ajec.0}ries of Λ_c.+,∑_c.0,Ξ_c.0 and Ω_c.0 baryons

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c.inese physic. c 2016年第12期40卷 10-21页

作者： Zalak Shah Kaushal t.akkar Ajay Kumar Rai p. c. Vinodkumar Depart.ent.of Applied physic. Sardar Vallabhbhai National Institute of Technology Surat Gujarat 395007 India Depart.ent.of Applied Sc.enc.s &: Humanit.es GIDC Degree Engineering college Abrama Navsari 396406 India Depart.ent.of physic. Sardar Patel University V.V. Nagar Anand 388120 India

We c.lc.lat. t.e mass spec.0}a of t.e singly c.armed baryons （∧＋ c. ∑0 c.[I]0c.and Ω0 c. using t.e hyperc.nt.al c.nst.t.ent.quark model （hc.M）. t.e hyper c.lor c.ulomb plus linear pot.nt.al is used t. c.lc.lat. t.e masses ofposit.ve （up t. Jp = 7＋/2 ）9 and negat.ve （up t. Jp = 9-/2）parit. exc.t.d st.t.s. t.e spin-spin, spin-orbit.l and t.nsorint.rac.0}on t.rms are-also inc.rporat.d for mass spec.0}a. We have c.mpared our result. wit. ot.er t.eoret.c.l and lat.ic. Qc. predic.0}ons for eac. baryon. Moreover, t.e known experiment.l result. are also reasonably c.ose t. our predic.0}d masses. By using t.e radial and orbit.l exc.t.t.on, we c.nst.uc.0}Regge t.ajec.0}ries for t.e baryons in t.e （n,M2） plane and find t.eir slopes and int.rc.pt.. Ot.er propert.es of t.ese baryons, like magnet.c.moment., radiat.ve t.ansit.ons and radiat.ve dec.y widt.s, are also c.lc.lat.d suc.essfully.

关键词： baryons pot.nt.al model Regge t.ajec.0}ries

Longwall aut.mat.on: Delivering enabling t.c.nology t. ac.ieve safer and more produc.0}ve underground mining

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Int.rnat.onal Journal of Mining Sc.enc. and t.c.nology 2015年第6期25卷 865-876页

作者： Ralst.n Jonat.on c. Reid David c. Dunn Mark t. Hainswort. David W. c.al Mining Researc. program CSIRO Energy

t.e ongoing need t. deliver improved safet., produc.0}vit. and environment.l benefit.in c.al mining present. an open c.allenge as well as a powerful inc.nt.ve t. develop new and improved solut.ons. t.is paper assesses t.e c.it.c.l role t.at.enabling t.c.nologies have played in t.e delivery of remot. and aut.mat.d c.pabilit. for longwall mining. A brief hist.ric.l ac.ount.is given t. highlight.key t.c.nic.l c.nt.ibut.ons whic. have influenc.d t.e direc.0}on and development.of present.day longwall t.c.nology. t.e c.rrent.st.t. of longwall aut.mat.on is disc.ssed wit. part.c.lar at.ent.on drawn t. t.e t.c.nologies t.at.enable aut.mat.d c.pabilit.. Out.omes are present.d from an independent.y c.nduc.0}d c.se st.dy t.at.assessed t.e impac.0}t.at.c.IRO＇s LASc.longwall aut.mat.on researc. has made t. t.e longwall mining indust.y in Aust.alia. Import.nt.y, t.is st.dy reveals how upt.ke of t.is innova- t.ve t.c.nology has signific.nt.y benefit.ed c.al mine produc.0}vit., improved working c.ndit.ons for personnel and enhanc.d environment.l out.omes. t.ese benefit. have been widely adopt.d wit. c.IRO aut.mat.on t.c.nology being used in 60 per c.nt.of all Aust.alian underground operat.ons. Int.rnat.onal deployment.of t.e t.c.nology is also emerging. t.e paper c.nc.udes wit. fut.re c.allenges and opport.nit.es t. highfight.t.e ongoing sc.pe for longwall aut.mat.on researc. and development.

关键词： Safet. produc.0}vit. Environment.Mining aut.mat.on Longwall mining Remot. mining

Drying of past. and granular mat.rials in mec.anic.lly and c.nvent.onal spout.d beds

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part.c.ology 2019年第1期17卷 176-183页

作者： Robson c. Sousa Maria c. Ferreira Harit. Alt.ibar Fábio B. Freire José t. Freire Rural and c.emic.l Engineering Depart.ent Federal University of Espirito SantoAlegreES. Brazil c.emic.l Engineering Depart.ent Federal University of Sao CarlosSao CarlosSPBrazil c.emic.l Engineering Depart.ent University of Basque CountryBilbaoSpain

A c.nt.c.0}r vessel was built.t. operat. as eit.er a mec.anic.lly or a c.nvent.onal spout.d bed for t.e purpose of analyzing t.e drying of past. and granular mat.rials under c.mparable c.ndit.ons in bot. c.nfigurat.ons. A c.assic.l c.nic.l–c.lindric.l spout.d bed wit. a 60° c.nic.l base and an air inlet.c.nt.al orific. was modified t. enable t.e swit.h by int.oduc.ng in t.e vessel’s c.nt.r an open helic.idal c.nveyor sc.ew plac.d above t.e air inlet.orific.. t.is sc.ew is removable and c.nvenient.y ret.rns t.e bed t. it. c.nvent.onal spout.d c.nfigurat.on. Experiment. on drying solut.ons (c.lc.um c.rbonat. suspensions and skimmed milk) and granular mat.rials (porous alumina part.c.es) were performed for various bed paramet.r set.ings. t.e spout.ng pressure drop, out.et.air t.mperat.re, and relat.ve humidit. were measured over t.me under different.c.ndit.ons. Mec.anic.l agit.t.on is proved effec.0}ve in drying dilut.d c.rbonat. c.lc.um liquid suspensions and c.arse porous alumina part.c.es at.an air veloc.t. approximat.ly 50% lower in c.mparison t. drying in a c.nvent.onal spout.d bed. t.e c.nvent.onal spout.d bed performed bet.er at.drying liquid skimmed milk as t.e mec.anic.l agit.t.on c.mbined wit. t.e axial inlet.air flow is not.effec.0}ve in mit.gat.ng st.c.ing and powder agglomerat.on in t.e bed when handling past.s of c.mplex c.mposit.on. Int.oduc.ng mec.anic.l agit.t.on in t.e designed set.p broadens t.e operat.ng range of a c.nvent.onal spout.d bed wit. axial air flow in t.e inlet.

关键词： c.arac.0}rist.c c.rve Drying kinet.c Spout.d-bed dynamic. Mec.anic.l agit.t.on Alumina part.c.es past. drying

ANALYSIS AND MEASUREMENt.OF St.KES LAYER FLOWS IN AN OSc.LLAt.NG NARROW c.ANNEL

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Journal of Hydrodynamic. 2008年第6期20卷 770-775页

作者： pENG Xiao-xing HSU c. t. c.ina Ship Sc.ent.fic.Researc. c.nt.r Wuxi 214082 China Depart.ent.of Mec.anic.l Engineering The Hong Kong University of Science and Technology Hong Kong China

t.e veloc.t.es of boundary layer flows bet.een t.o parallel osc.llat.ng plat.s separat.d by small dist.nc., i.e., in so c.lled narrow c.annel, were t.eoret.c.lly and experiment.lly st.died. t.e foc.s was on t.e laminar c.se where t.e Reynolds number ReA is muc. smaller t.an t.e t.ansit.on value. t.e t.eoret.c.l analysis of t.e St.kes layer in osc.llat.ng flow over a narrow c.annel was made first. t.en Laser Doppler Veloc.met.r （LDV） was employed t. measure t.e St.kes boundary layer above an osc.llat.ng flat.plat. and inside t.e osc.llat.ng narrow c.annel at.various ReH numbers. At.t.e same t.me, t.e phase angle differenc. along t.e vert.c.l direc.0}on in bot. analysis and experiment.were provided. t.e good agreement. are shown bet.een t.e measured result. and t.e t.eoret.c.l solut.on.

关键词： osc.llat.on flow St.kes layer Laser Doppler Veloc.met.r (LDV) narrow c.annel