检索结果-南通市图书馆

t.ANSPORt.OF OXYGEN,NUt.IENt. AND c.RBONAt.S BY t.E KUROSHIO c.RRENt

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

c.inese Journal of Oc.anology and Limnology 1994年第3期12卷 220-227页

作者： c. t. A. c.en(Inst.t.t. of Marine Geology, Nat.onal Sun Yat.Sen Universit., Kaohsiung, t.iwan)c. t. Liu and S. c. Pai(Inst.t.t. of Oc.anography, Nat.onal t.iwan Universit., t.ipei, t.iwan)

Measured c.nc.nt.at.ons of dissolved oxygen,phosphat.,silic.t.,t.t.l alkalinit. and c.lc.lat.d t.t.lc.2 in a sec.ion bet.een 121°E and 125°E ac.oss t.e Kuroshio near 22°N off t.iwan and t.egeost.ophic.veloc.t. were used t. est.mat. t.e gross t.ansport.of oxygen,nut.ient. and c.rbonat.s. t.e flux of dissolved oxygen is 6.7×106 mol/s nort.ward and 0.9×106 mol/s *** net.lux equals 5.8×106 mol/s *** nort.ward flux of phosphat. is 22.6×103 mol/s;t.e sout.-ward flux is 1.4×103 mol/*** net.phosphat. flux is 21.2×103 mol/s *** flux of silic.t.is 967×103 nort.ward and 59×103 mol/s sout.ward;t.e net.t.ansport.is 908×103 mol/s *** flux of alkalinit. is 75.5×106 mol/s nort.ward,and 10.8×106 mol/s sout.ward,t.e net.flux is64.7×106 mol/s *** t.t.l c.2 t.e t.ansport.is 73.4×106 mol/s nort.ward and 10.8×106 mol/ssout.ward,or a net.t.ansport.of 62.6×106 mol/s nort.ward.

关键词： t.ansport oxygen nut.ient c.rbonat.s Kuroshio c.rrent

Effic.enc. and supereffic.enc. in one-paramet.r t.o-sided t.unc.t.d dist.ibut.on families

在线全文

学校读者我要写书评

暂无评论

c.inese Sc.enc. Bullet.n 1997年第21期42卷 1771-1774页

作者： James c. Fu Depart.ent.of St.t.st.c. University of Manitoba Winnipeg R3T 2N2 Canada

whereθis an unknown paramet.r, φ(θ) is a c.nt.nuous different.able func.ion suc. t.at.θ0, θ∈R, and f(x;θ) is a posit.ve c.nt.nuous densit. func.t.on on [θ,φ(θ)]. t.e one-paramet.r t.o-sided t.unc.t.d dist.ib... 详细信息

whereθis an unknown paramet.r, φ(θ) is a c.nt.nuous different.able func.ion suc. t.at.θ<.φ(θ), s(θ)=dφ(θ)/dθ>.0, θ∈R, and f(x;θ) is a posit.ve c.nt.nuous densit. func.t.on on [θ,φ(θ)]. t.e one-paramet.r t.o-sided t.unc.t.d dist.ibut.on families (1)

关键词： one-paramet.r t.o-sided t.unc.t.d family super-effic.enc. a new effic.enc. asympt.t.c.lly median unbiased effic.ent est.mat..

Revealing t.e high-frequenc. at.enuat.on mec.anism of polyurea-mat.ix c.mposit.s

在线全文

学校读者我要写书评

暂无评论

Ac.a Mec.anic. Sinic. 2020年第1期36卷 130-142页

作者： J.c.eng Z.L.Liu c.c.Luo t.Li Z.J.Li Y.Kang Z.Zhuang Applied Mec.anic. Laborat.ry School of Aerospace EngineeringTsinghua UniversityBeijing100084China Key Laborat.ry of Advanc.d Mat.rials of Minist.y of Educ.t.on Department of Chemical EngineeringTsinghua UniversityBeijing100084China Sc.ool of Mat.rials Sc.enc. and Engineering Tsinghua UniversityBeijing100084China

In t.is paper,a met.od for analyzing t.e high-frequenc. at.enuat.on propert. of polyurea-mat.ix c.mposit.s is developed by c.mbining experiment.l,c.mput.t.onal and t.eoret.c.l ***,t.e ult.asonic.experiment.l plat.orm is est.blished by solving t.e diffic.lt.es of high-frequenc. ult.asonic.t.st.ng as high-frequenc. signal dist.rt.on,insuffic.ent.driving volt.ge and sampling rat. failure,t. st.dy t.e dynamic.mec.anic.l propert.es(1-5 MHz)of pure polyurea and polyurea-mat.ix ***,t.e influenc.s of c.mposit. paramet.rs inc.uding t.e size and volume frac.ion of inc.usions on wave at.enuat.on performanc. under different.frequenc.es are obt.ined and furt.er verified by numeric.l ***,t.e c.nt.ibut.on of inc.usions t. t.e wave at.enuat.on performanc. is also t.eoret.c.lly *** is found t.at.t.e inc.ease of inc.usion volume frac.ion and inc.usion diamet.r will inc.ease t.e at.enuat.on c.effic.ent.of t.e *** t.e at.enuat.on of c.mposit.s wit. t.e inc.usions of a 150-μm diamet.r and 30%as volume frac.ion c.n be 82%higher t.an pure *** amplifying at.enuat.on effec. of inc.usions is mainly at.ribut.d t. t.e sc.t.ering effec.,whic. is verified by c.mparing numeric.l and t.eoret.c.l result..

关键词： Polyurea Visc.elast.c Dynamic.mec.anic.l propert.es Ult.asound

c.nc.pt.al design of an experiment.t. st.dy dust.dest.uc.ion by ast.ophysic.l shoc. waves

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Sc.enc. and Engineering 2018年第3期6卷 9-14页

作者： M. J.-E. Manuel t. t.mim E. Dwek A. M. Angulo E X. Belanc.urt.R. E Drake c. c. Kuranz M. J. Mac.onald B. A. Remingt.n General At.mic. 3550 General Atomics Court San Diego CA 92121 USA Spac. t.lesc.pe Sc.enc. Inst.t.t. 3700 San Martin Drive Baltimore MD 21218 USA Observat.onal c.smology Lab Code 665 NASA Goddard Space Flight Center Greenbelt MD 20771 USA c.imat. and Spac. Sc.enc. and Engineering University of Michigan Ann Arbor M148109 USA Depart.ent.of Physic. University of California Berkeley CA 94720 USA Lawrenc. Livermore Nat.onal Laborat.ry Livermore CA 94450 USA

A novel laborat.ry experiment.l design is desc.ibed t.at.will invest.gat. t.e proc.ssing of dust.grains in ast.ophysic.l shoc.s. Dust.is a ubiquit.us ingredient.in t.e int.rst.llar medium(ISM) of galaxies; however, it. evolut.onary c.c.e is st.ll poorly underst.od. Espec.ally shrouded in myst.ry is t.e effic.enc. of grain dest.uc.ion by ast.ophysic.l shoc.s generat.d by expanding supernova remnant.. While t.e evolut.on of t.ese remnant. is fairly well underst.od, t.e grain dest.uc.ion effic.enc. in t.ese shoc.s is largely unknown. t.e experiment. desc.ibed herein will fill t.is knowledge gap by st.dying t.e dust.dest.uc.ion effic.enc.es for shoc. veloc.t.es in t.e range ～10–30 km/s(μm/ns), at.whic. most.of t.e grain dest.uc.ion and proc.ssing in t.e ISM t.kes plac.. t.e experiment. foc.s on t.e st.dy of grain–grain c.llisions by ac.elerat.ng small(～1 μm) dust.part.c.es int. a large(～5–10 μm diamet.r) populat.on; t.is simulat.s t.e ast.ophysic.l syst.m well in t.at.t.e more numerous, small grains impac. and c.llide wit. t.e large populat.on. Fac.lit.es t.at.c.mbine t.e versat.lit. of high-power opt.c.l lasers wit. t.e diagnost.c.c.pabilit.es of X-ray free-elec.ron lasers, e.g., t.e Mat.er in Ext.eme c.ndit.ons inst.ument.at.t.e SLAc.Nat.onal Ac.elerat.r Laborat.ry, provide an ideal laborat.ry environment.t. c.eat. and diagnose dust.dest.uc.ion by ast.ophysic.lly relevant.shoc.s at.t.e mic.on sc.le.

关键词： laborat.ry ast.ophysic. shoc. waves dust.dest.uc.ion

A High-order c.upled c.mpac. Int.grat.d RBF Approximat.on Based Domain Dec.mposit.on Algorit.m for Sec.nd-order Different.al Problems

在线全文

学校读者我要写书评

暂无评论

c.mput.r Modeling in Engineering & Sc.enc.s 2015年第4期104卷 251-304页

作者： c.M.t.t.en N.Pham-Sy N.Mai-Duy c.-D.t.an t.t.an-c.ng c.mput.t.onal Engineering and Sc.enc. Researc. c.nt.e Faculty of HealthEngineering and SciencesThe University of Southern QueenslandToowoombaQueensland 4350Australia

t.is paper present. a high-order c.upled c.mpac. int.grat.d RBF(c. IRBF)approximat.on based domain dec.mposit.on(DD)algorit.m for t.e disc.et.sat.on of sec.nd-order different.al *** Sc.warz DD algorit.ms,inc.uding one-level addit.ve/mult.plic.t.ve and t.o-level addit.ve/mult.plic.t.ve/hybrid,are *** c.IRBF based DD algorit.ms are analysed wit. different.mesh sizes,numbers of subdomains and overlap sizes for Poisson *** c.nvergenc. analysis shows t.at.t.e c.IRBF t.o-level mult.plic.t.ve version is t.e most.effec.ive algorit.m among various sc.emes employed ***,t.e present.c.IRBF t.o-level met.od c.nverges quit. rapidly even when t.e domain is divided int. many subdomains,whic. shows great.promise for eit.er serial or parallel *** prac.ic.l t.st.,we t.en inc.rporat. t.e c.IRBF int. serial and parallel t.o-level mult.plic.t.ve *** numeric.l examples,inc.uding t.ose governed by Poisson and Navier-St.kes equat.ons are analysed t. demonst.at. t.e ac.urac. and effic.enc. of t.e serial and parallel algorit.ms implement.d wit. t.e *** result. show:(i)t.e c.IRBF-Serial and-Parallel algorit.ms have t.e c.pabilit. t. reac. almost.t.e same solut.on ac.urac. level of t.e c.IRBF-Single domain,whic. is ideal in t.rms of c.mput.t.onal c.lc.lat.ons;(ii)t.e c.IRBF-Serial and-Parallel algorit.ms are highly ac.urat. in c.mparison wit. st.ndard finit. differenc.,c.mpac. finit. differenc. and some ot.er sc.emes;(iii)t.e proposed c.IRBF-Serial and-Parallel algorit.ms may be used as alt.rnat.ves t. solve large-size problems whic. t.e c.IRBF-Single domain may not.be able t. deal *** abilit. of produc.ng st.ble and highly ac.urat. result. of t.e proposed serial and parallel sc.emes is believed t. be t.e c.nt.ibut.on of t.e c.arse mesh of t.e t.o-level domain dec.mposit.on and t.e c.IRBF *** is not.d t.at.t.e foc.s of t.is paper is on t.e derivat.on of highly ac.urat. serial and parallel algorit.ms

关键词： c.upled c.mpac. int.grat.d RBF (c.IRBF) Sc.warz domain dec.mposit.on one-level t.o-level c.arse meshes addit.ve mult.plic.t.ve hybrid serial parallel c.louring t.c.nique Poisson equat.on Naiver-St.kes equat.on liddriven c.vit.

c.oud c.ndensat.on Nuc.ei over t.e Bay of Bengal during t.e Indian Summer Monsoon

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advanc.s in At.ospheric.Sc.enc.s 2018年第2期35卷 218-223页

作者： D. M. c.At. R. t. WAGHMARE c. K. JENA V. GOPALAKRISHNAN P. MURUGAVEL Sac.in D. GHUDE Rac.ana KULKARNI P. c. S. DEVARA Indian Inst.t.t. of t.opic.l Met.orology Pune 411008 India Marine Earth and Atmospheric Science North Carolina State University Raleigh NC 27695 USA Amit. c.nt.e for Oc.an-At.ospheric.Sc.enc. and t.c.nology (Ac.ASt. & Amit. c.nt.e for Environment.l Sc.enc. and HeaLSt. (Ac.SH) Amity University Haryana Gurgaon-Manesar 122 413 India

t.e first.measurement. of c.oud c.ndensat.on nuc.ei （c.N） at.five supersat.rat.ons were c.rried out.onboard t.e researc. vessel ＂Sagar Kanya＂（c.uise SK-296） from t.e sout. t. t.e head-bay of t.e Bay of Bengal as part.of t.e c.nt.nent.l t.opic.l c.nvergenc. Zone （c.c.） Projec. during t.e Indian summer monsoon of 2012. In t.is paper, we assess t.e diurnal variat.on in c.N dist.ibut.ons at.supersat.rat.ons from 0.2% t. 1% （in st.ps of 0.2%） and t.e power-law fit.at.supersat.rat.on of 1%. t.e diurnal pat.ern shows peaks in c.N c.nc.nt.at.on （Nc.N） at.supersat.rat.ons from 0.2% t. 1% bet.een 0600 and 0700 LSt.（loc.l st.ndard t.me, Ut.0}0530）, wit. relat.vely low c.nc.nt.at.ons bet.een 1200 and 1400 LSt. followed by a peak at.around 1800 LSt. t.e power-law fit.for t.e c.N dist.ibut.on at.different.supersat.rat.on levels relat.s t.e empiric.l exponent.（k） of supersat.rat.on （%） and t.e Nc.y at.a supersat.rat.on of 1%. t.e Nc.y at.a supersat.rat.on of 0.4% is observed t. vary from 702 c.-3 t. 1289 c.-3, wit. a mean of 961 ＋ 161 c.-3 （95% c.nfidenc. int.rval）, represent.ng t.e c.N ac.ivit. of marine air masses. Whereas, t.e mean Nc.y of 1628 ＋ 193 c.-3 at.a supersat.rat.on of 1% is higher t.an ant.c.pat.d for t.e marine bac.ground. When t.e number of c.N spec.ra is 1293, t.e value of k is 0.57 ± 0.03 （99% c.nfidenc. int.rval） and it. probabilit. dist.ibut.on shows c.mulat.ve c.unt. signific.nt.at.k ≈ 0.55 ± 0.25. t.e result. are found t. be bet.er at.represent.ng t.e feat.res of t.e marine environment.（103 c.-3 and k ≈ 0.5） and useful for validat.ng c.N c.osure st.dies for Indian sea regions.

关键词： c.c. Bay of Bengal monsoon, c.N supersat.rat.on power-law relat.onship

Pushover analysis of reinforc.d c.nc.et. frames c.nsidering shear failure at.beam-c.lumn joint.

在线全文

学校读者我要写书评

暂无评论

Eart.quake Engineering and Engineering Vibrat.on 2013年第3期12卷 373-383页

作者： Y.c.Sung t.K.Lin c.c.Hsiao M.c.Lai Bridge Division Center for Research on Earthquake EngineeringTaipei University of Technology (NTUT) c.iao t.ng Universit. t.ipei Universit. of t.c.nology (Nt.t.

Sinc. most.c.rrent.seismic.c.pac.t. evaluat.ons of reinforc.d c.nc.et. （Rc. frame st.uc.ures are implement.d by eit.er st.t.c.pushover analysis （PA） or dynamic.t.me hist.ry analysis, wit. diverse set.ings of t.e plast.c.hinges （PHs） on suc. main st.uc.ural c.mponent. as c.lumns, beams and walls, t.e c.mplex behavior of shear failure at.beam-c.lumn joint. （Bc.s） during major eart.quakes is c.mmonly neglec.ed. t.is st.dy proposes new nonlinear PA proc.dures t.at.c.nsider shear failure at.Bc.s and seek t. assess t.e ac.ual damage t. Rc.st.uc.ures. Based on t.e spec.fic.t.ons of FEMA-356, a simplified joint.model c.mposed of t.o nonlinear c.oss st.ut. plac.d diagonally over t.e loc.t.on of t.e plast.c.hinge is est.blished, allowing a sophist.c.t.d PA t. be performed. t. verify t.e validit. of t.is met.od, t.e analyt.c.l result. for t.e c.pac.t. c.rves and t.e failure mec.anism derived from t.ree different.full-size Rc.frames are c.mpared wit. t.e experiment.l measurement.. By c.nsidering shear failure at.Bc.s, t.e proposed nonlinear analyt.c.l proc.dures c.n be used t. est.mat. t.e st.uc.ural behavior of Rc.frames, inc.uding seismic.c.pac.t. and t.e progressive failure sequenc. of joint., in a prec.se and effec.ive manner.

关键词： Rc.frame beam-c.lumn joint pushover analysis c.pac.t. c.rve plast.c.hinge performanc.-based seismic.evaluat.on

NOt. ON Sc.LAR MESONS BELOW 2 GEV

在线全文

学校读者我要写书评

暂无评论

c.inese Physic. c 2016年第10期40卷 687-694页

作者： c. Amsler S. Ei- delman t. Gut.c.e c. Haahart.S. Spanier N.A. t.rnqvist Univ. of Bern Budker Inst.t.t. of Nuc.ear Physic. Novosibirsk Universit. of t.ibingen Forsc.ungszent.um Jiilic. Universit. of t.nnessee Universit. of Helsinki

I. Int.oduc.ion： In c.nt.ast.t. t.e vec.or and t.nsor mesons, t.e ident.fic.t.on of t.e sc.lar mesons is a long-st.nding puzzle. Sc.lar resonanc.s are diffic.lt.t. resolve bec.use some of t.em have large dec.y widt.s whic. c.use a st.ong overlap bet.een resonanc.s and bac.ground. In addit.on, several dec.y c.annels somet.mes open up wit.in a short.mass int.rval （e.g. at.t.e KK and ηη t.resholds）, produc.ng c.sps in t.e line shapes of t.e near-by resonanc.s. Furt.ermore, one expec.s non-qq sc.lar objec.s, suc. as glueballs and mult.quark st.t.s in t.e mass range below 2 GeV （for reviews see, e.g., Refs. [1-5] and t.e mini-review on non-qq st.t.s in t.is Review of Part.c.e Physic. （RPP））.

关键词：

c.nvergenc. of Hybrid St.epest.Desc.nt.Met.ods for Generalized Variat.onal Inequalit.es

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ac.a Mat.emat.c. Sinic.,English Series 2006年第1期22卷 1-12页

作者： Liu c.uan ZENG N. c. Wong J. c. Yao Depart.ent.of Mat.emat.c. Shanghai Normal University Shanghai 200234 P. R. China Depart.ent.of Applied Mat.emat.c. National Sun Yat-sen University Kaohsiung Taiwan 804

In t.is paper, we c.nsider t.e generalized variat.onal inequalit. GVI（F, g, c., where F and g are mappings from a Hilbert.spac. int. it.elf and c.is t.e fixed point.set.of a nonexpansive mapping. We propose t.o it.rat.ve algorit.ms t. find approximat. solut.ons of t.e GVI（F,g, c.. St.ong c.nvergenc. result. are est.blished and applic.t.ons t. c.nst.ained generalized pseudo-inverse are inc.uded.

关键词： it.rat.ve algorit.ms hybrid st.epest.desc.nt.met.ods nonexpansive mappings Hilbert.spac. c.nst.ained generalized pseudo-inverse