检索结果-南通市图书馆

Genuine enta.glement under squeezed generalized a.plitude da.ping cha.nels with memory

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第2期33卷 158-163页

作者： Ma.ha. ali Depa.tment of Electrica. Engineering Faculty of EngineeringIslamic University MadinahMadinah 107Saudi Arabia

We study genuine enta.glement a.ong three qubits undergoing a.noisy process tha. includes dissipa.ion, squeezing,a.d decoherence. We obta.n a.genera. solution a.d a.a.yze the a.ymptotic qua.tum sta.es. We find tha. most of these a.ymptotic sta.es ca. be genuinely enta.gled depending upon the pa.a.eters of the cha.nel, memory pa.a.eter, a.d the pa.a.eters of the initia. sta.es. We study Greenberger–Horne–Zeilinger(GHZ) sta.es a.d W sta.es, mixed with white noise,a.d determine the conditions for them to be genuinely enta.gled a. infinity. We find tha. for these mixtures, it is possible to sta.t with a.bi-sepa.a.le sta.e(with a.specific mixture of white noise) a.d end with genuine enta.gled sta.es. However, the memory pa.a.eter μ must be very high. We find tha. in contra.t to the two-qubit ca.e, none of the three-qubit a.ymptotic sta.es for n → ∞ a.e genuinely enta.gled.

关键词： genuine enta.glement squeezed therma. ba.hs multipa.tite sta.es

Hea. tra.sfer a.a.ysis in pa.ticle-la.en flows using the immersed bounda.y method

在线全文

学校读者我要写书评

暂无评论

Pa.ticuology 2024年第7期90卷 394-403页

作者： ali a.ba. Za.di Depa.tment of Mecha.ica. Engineering University of Manitoba75A Chancellors CircleWinnipegR3T 5V6Canada

This pa.er investiga.es a. efficient immersed bounda.y method(IBM)for multiple-core CPU ma.hines with loca. grid refinement for the ca.cula.ion of hea. tra.sfer between fluids a.d finite-sized *** fluid momentum equa.ions a.e solved by using the fra.tiona. step method,while the energy equa.ion is solved by employing the second-order a.a.s-Ba.hforth *** efficient loa. ba.a.cing between the CPU cores,the coupling between pa.ticles a.d fluid is obta.ned by a.plying the body force in the fluid equa.ions,which depends on the solid volume fra.tion of pa.ticles conta.ned in ea.h grid cell,a.d then by linea.ly interpola.ing the pa.ticle tempera.ure a.d velocity on the fluid grid cell(in pla.e of the delta.function commonly used in litera.ure).Severa. test ca.es from the litera.ure a.e studied,a.d good a.reement is observed between the simula.ion results a.d the ***,a.scaling study on multiple core ma.hines is performed,demonstra.ing the proposed IBM's ca.a.ilities for a.significa.t reduction in processing time.

关键词： Hea. tra.sfer Immersed bounda.y method Pa.ticle resolved direct numerica. simula.ions Fluid solid intera.tions

Simula.ion of the deforma.le la.era. bounda.ies in bia.ia. test using DEM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pa.ticuology 2024年第5期88卷 161-175页

作者： ali Momeni Ba.ry Cla.ke Yong Sheng ali Ha.sa.pour WSP 3 Wellington PlaceLeedsLS1 4APUK Hull University HullHU6 7RXUK School of Civil Engineering University of LeedsLeedsLS2 9JTUK School of Computer Science University of HullHullHU6 7RXUK School of Chemica. a.d Process Engineering University of LeedsLeedsLS2 9JTUK

a.plying the discrete element method(DEM)in soil mecha.ics ca. provide a.unda.t informa.ion a. the pa.ticle-sca.e a.d fa.ilita.es illustra.ion of the ma.ro-mecha.ica. beha.iour of soils ba.ed on the inter-pa.ticle *** tria.ia. test is one of the most common la.ora.ory methods to study the ma.ro-mecha.ica. beha.iour of pa.ticula.e ma.eria.s such a. ***,ma.y problems in geotechnica. design ca. be a.sumed a.d simplified a. a.pla.e stra.n *** a.bia.ia. test ca. be conducted to reproduce the ma.ro-mecha.ica. beha.iour of soil,where the sa.ple is enclosed by two horizonta. rigid pla.ens a.d a.vertica. la.ex membra.e,which is a.deforma.le continuous element a.d a.lows the enclosed specimen to deform freely while ma.nta.ning confining stress during *** pa.er presents a. a.gorithm to represent physica. a.d mecha.ica. cha.a.teristics of la.ex membra.e in the 2D DEM simula.ion of bia.ia. test using the PFC^(2D) *** investiga.e the impa.t of the la.era. bounda.y conditions on the micro-ma.ro mecha.ica. beha.iours of soil sa.ples,two sets of DEM bia.ia. tests a.e conducted,*** rigid a.d deforma.le la.era. bounda.y *** DEM modeling results indica.e tha. the la.era. bounda.y conditions ha.e a.significa.t effect on the micro-sca.e fa.ric properties,thickness a.d inclina.ion of the shea. *** compa.ison between these two simula.ions a.so demonstra.es tha. the la.era. bounda.y conditions pla. a.ma.or role in the pea. a.d post-pea. stress-stra.n beha.iours a. well a. the dila.ion a.d critica. sta.e beha.iours of gra.ula. soils.

关键词： Discrete element method Bia.ia. test Deforma.le bounda.ies Shea. ba.d Critica. sta.e Fa.ric a.isotropy Geometrica. sta.ility index

Sensing the hea.y wa.er concentra.ion in a. H_(2)O-D_(2)O mixture by solid-solid phononic crysta.s

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第4期33卷 493-498页

作者： Moha.ma.reza.Ra.imi ali Ba.ra.i Optoelectronic a.d Na.ophotonics Resea.ch La.ora.ory(ONRL) Faculty of Electrical EngineeringSahand University of TechnologyTabrizIran

a.new method ba.ed on phononic crysta.s is presented to detect the concentra.ion of hea.y wa.er(D_(2)O)in a. H_(2)O-D_(2)O *** ha.e been obta.ned a.d a.a.yzed in the concentra.ion ra.ge of 0%-10%a.d 90%-100%D_(2)O.a.proposed structure of tungsten sca.terers in a. a.uminum host is *** order to detect the ta.get ma.eria.,a.ca.ity region is considered a. a.sound wa.e resona.or in which the ta.get ma.eria. with different concentra.ions of D_(2)O is *** cha.ging the concentra.ion of D_(2)O in the H_(2)O-D_(2)O mixture,the resona.ce frequency undergoes a.frequency *** 1%cha.ge in D_(2)O concentra.ion in the H_(2)O-D_(2)O mixture ca.ses a.frequency cha.ge of a.out 120 *** finite element method is used a. the numerica. method to ca.cula.e a.d a.a.yze the na.ura. frequencies a.d tra.smission spectra.of the proposed *** performa.ce eva.ua.ion index shows a.high Q fa.tor up to 1475758 a.d a.high sensitivity up to 13075,which a.e a.cepta.le va.ues for sensing *** other figures of merit rela.ed to the detection performa.ce a.so indica.e high-quality performa.ce of the designed sensor.

关键词： phononic crysta.s sensor H_(2)O-D_(2)O mixture ca.ity

Experimenta. Study on Hea. Stora.e Properties Compa.ison of Pa.a.fin/Meta. Foa.s Pha.e Cha.ge Ma.eria. Composites

在线全文

学校读者我要写书评

暂无评论

Journa. of Therma. Science 2024年第2期33卷 469-478页

作者： Wa.a. a.MED a.id HUSSa.N Ha.zla.SHa.ID Imra. ali Ha.iz Muha.ma. ali Depa.tment of Mecha.ica. Engineering University of Engineering and TechnologyTaxila47080Pakistan Depa.tment of Mecha.ica. Engineering Institute of Space TechnologyIslamabadPakistan Depa.tment of Mecha.ica. Mechatronics and Manufacturing EngineeringUniversity of Engineering and Technology LahoreFaisalabad CampusPunjabPakistan Mecha.ica. Engineering Depa.tment King Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia Interdisciplina.y Resea.ch Center for Renewa.le Energy a.d Power Systems(IRC-REPS) King Fahd University of Petroleum and MineralsDhahran31261Saudi Arabia

Hea. stora.e properties of pha.e cha.ge ma.eria.s(PCMs) a.e essentia. cha.a.teristics tha. perform a.key role in therma. hea. energy stora.e *** therma. properties of PCMs ca. be improved by developing meta. foa./PCM *** a.dition of meta. foa. in PCMs ha. a.significa.t effect on the therma. cha.a.teristics of *** this pa.er,the hea. stora.e properties of two different meta. foa./PCM composites were experimenta.ly *** beha.ior of pa.a.fin in meta. foa.(copper a.d iron-nickel)/pa.a.fin composites concerning pure pa.a.fin a. a.consta.t hea. flux of 1000 W/m^(2) in three directions simulta.eously(x,y,a.d z) wa. *** wa. infiltra.ed into copper a.d iron-nickel foa.s to develop composite ma.eria.s which resulted in enha.cing the therma. conductivity of the pa.a.fin.a.compa.a.ive a.a.ysis is ma.e on the hea. stora.e properties of pa.a.fin in copper a.d iron-nickel foa.s/pa.a.fin *** tempera.ure distribution during the pha.e tra.sition process is experimenta.ly *** compa.ison indica.es tha. tempera.ure uniformity in copper foa./pa.a.fin composite is better tha. in iron-nickel foa./pa.a.fin composite a.d pure pa.a.fin a. the sa.e hea. *** results show tha. a. hea. flux of 1000 W/m^(2),the hea. stora.e time for copper foa./pa.a.fin composite is 20.63% of tha. of iron-nickel foa./pa.a.fin composite.

关键词： hea. stora.e ca.a.ity pa.a.fin/meta. foa. composite tempera.ure uniformity hea. stora.e ra.e pha.e tra.sition process

Emerging Trends in Da.a.e Tolera.ce a.sessment:a.Review of Sma.t Ma.eria.s a.d Self-Repa.ra.le Structures

在线全文

学校读者我要写书评

暂无评论

Structura. Dura.ility & Hea.th Monitoring 2024年第1期18卷 1-18页

作者： ali a.ba. Firoozi ali a.gha. Firoozi Depa.tment of Civil Engineering Faculty of Engineering&TechnologyUniversity of BotswanaGaboroneUB0061Botswana Depa.tment of Civil Engineering University Kebangsaan Malaysia(UKM)Bangi43600Malaysia

The discipline of da.a.e tolera.ce a.sessment ha. experienced significa.t a.va.cements due to the emergence of sma.t ma.eria.s a.d self-repa.ra.le *** review offers a.comprehensive look into both tra.itiona. a.d innova.ive methodologies employed in da.a.e tolera.ce *** a.deta.led explora.ion of da.a.e tolera.ce concepts a.d their historica. progression,the review juxta.oses the proven techniques of da.a.e a.sessment with the cutting-edge innova.ions brought a.out by sma.t ma.eria.s a.d self-repa.ra.le *** subsequent sections delve into the synergistic integra.ion of sma.t ma.eria.s with self-repa.ra.le structures,ma.king a.pivota. stride in da.a.e tolera.ce by esta.lishing a. a.tonomous system for immedia.e da.a.e identifica.ion a.d *** holistic a.proa.h broa.ens the a.plica.ility of these technologies a.ross diverse sectors yet brings forth unique cha.lenges dema.ding further innova.ion a.d ***,the review exa.ines future prospects tha. combine a.va.ced ma.ufa.turing processes with da.a.centric methodologies,a.plifying the ca.a.ilities of these‘intelligent’*** review culmina.es by highlighting the tra.sforma.ive potentia. of this union between sma.t ma.eria.s a.d self-repa.ra.le structures,promoting a.susta.na.le a.d efficient engineering pa.a.igm.

关键词： Da.a.e tolera.ce sma.t ma.eria.s self-repa.ra.le structures structura. hea.th monitoring synergy a.tonomous system a.va.ced ma.ufa.turing da.a.driven methodologies

a.methodology for da.a.e eva.ua.ion of underground tunnels subjected to sta.ic loa.ing using numerica. modeling

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of Rock Mecha.ics a.d Geotechnica. Engineering 2024年第6期16卷 1993-2005页

作者： Sha.riya. Heida.za.eh ali Sa.idi Rock Mecha.ics Engineer AtkinsRéalisMontrealQuebecCanada Depa.tment of a.plied Sciences Universitédu QuébecàChicoutimiChicoutimiQuebecCanada

We ha.e proposed a.methodology to a.sess the robustness of underground tunnels a.a.nst potentia. *** involves developing vulnera.ility functions for va.ious qualities of rock ma.s a.d sta.ic loa.ing *** a.count for these va.ia.ions,we utilized a.Monte Ca.lo Simula.ion(MCS)technique coupled with the finite difference code FLa.^(3D),to conduct two thousa.d seven hundred numerica. simula.ions of a.horseshoe tunnel loca.ed within a.rock ma.s with different geologica. strength index system(GSIs)a.d subjected to different sta.es of sta.ic *** qua.tify the severity of da.a.e within the rock ma.s,we selected one stress-ba.ed(brittle shea. ra.io(BSR))a.d one stra.n-ba.ed fa.lure criterion(pla.tic da.a.e index(PDI)).Ba.ed on these criteria.we then developed fra.ility ***,we used ma.hema.ica. a.proxima.ion techniques to produce vulnera.ility functions tha. rela.e the proba.ilities of va.ious da.a.e sta.es to loa.ing intensities for different quality cla.ses of blocky rock *** results indica.ed tha. the fra.ility curves we obta.ned could a.cura.ely depict the evolution of the inner a.d outer shell da.a.e a.ound the ***,we ha.e provided engineers with a.tool tha. ca. predict levels of da.a.es a.socia.ed with different fa.lure mecha.isms ba.ed on va.ia.ions in rock ma.s quality a.d in situ stress *** method is a.numerica.ly developed,multi-va.ia.e a.proa.h tha. ca. a.d engineers in ma.ing informed decisions a.out the robustness of underground tunnels.

关键词： Fra.ility curves Underground tunnels Vulnera.ility functions Brittle da.a.e FLa.3D Numerica. modeling

Performa.ce of Text-Independent a.toma.ic Spea.er Recognition on a.Multicore System

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tsinghua.Science a.d Technology 2024年第2期29卷 447-456页

作者： Ra.d Koua.ly Ta.ha.ali Kha. Fa.ulty of Tech a.d Softwa.e Engineering University of Europe for Applied SciencesPotsdam 14469Germany

This pa.er studies a.high-speed text-independent a.toma.ic Spea.er Recognition(a.R)a.gorithm ba.ed on a.multicore system's Ga.ssia. Mixture Model(GMM).The high speech is a.hieved using pa.a.lel implementa.ion of the fea.ure's extra.tion a.d a.grega.ion methods during tra.ning a.d testing *** memory pa.a.lel progra.ming techniques using both OpenMP a.d PThrea.s libra.ies a.e developed to a.celera.e the code a.d improve the performa.ce of the a.R *** experimenta. results show speed-up improvements of a.ound 3.2 on a.persona. la.top with Intel i5-6300HQ(2.3 GHz,four cores without hyper-threa.ing,a.d 8 GB of Ra.).In a.dition,a.rema.ka.le 100%spea.er recognition a.cura.y is a.hieved.

关键词： a.toma.ic Spea.er Recognition(a.R) Ga.ssia. Mixture Model(GMM) sha.ed memory pa.a.lel progra.ming PThrea.s OpenMP

CFD simula.ion a.d optimiza.ion of a. industria. cement ga.-solid a.r cla.sifier

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pa.ticuology 2024年第6期89卷 172-184页

作者： Moha.a.reza.Esma.ilpour ali Mohebbi Va.a. Gha.a.da.i Depa.tment of Chemica. Engineering Faculty of EngineeringShahid Bahonar University of KermanKermanIran Kerma. Momta.a. Cement Compa.y KermanIran

a. a.r cla.sifier is one of the ma.n a.d effective devices in cement *** this study,a.three-dimensiona.,stea.y a.d two-pha.e(solid-ga.)computa.iona. fluid dyna.ics(CFD)simula.ion wa. performed to optimize the performa.ce of this device in the Kerma. Momta.a. cement pla.t,*** the valida.ion of CFD results,the a.r flow field a.d a.r pa.h lines between fixed bla.es were checked ca.efully a.d the non-uniformity in velocity distribution a.d the forma.ion of vortex flows between the bla.es close to pa.ticle inlets were *** study tried to improve the device efficiency by cha.ging the method of entering pa.ticles into the device,resulting in a.reduction in a.r cla.sifier electrica. energy consumption(from 41 to 35(kW h)/t)a.d a. increa.e in production ra.e(from 203 to 214 t/h).a.ditiona.ly,the study investiga.ed the effects of other modifia.le opera.ing conditions like rota.y ca.e rota.ion speed,pressure difference,a.d inlet a.r tempera.ure on the pa.ticle size distribution a.d cla.sifier *** results showed tha. increa.ing the ca.e rota.ion speed decrea.ed the product ra.e a.d the product pa.ticles mea. dia.eter while increa.ing pressure difference or increa.ing tempera.ure increa.ed the product ra.e a.d the product pa.ticles mea. *** wa. concluded tha. these modifia.le opera.ing conditions ca. significa.tly a.fect the performa.ce of the a.r cla.sifier in the cement industry.

关键词： Cement a.r cla.sifier Computa.iona. fluid dyna.ics Ga.-solid two-pha.e flow Optimiza.ion Euleria.-La.ra.gia. method Efficiency