检索结果-南通市图书馆

Theoretica. Qua.tiza.ion of Exa.t Wa.e Turbulence in Exponentia. Oscillons a.d Pulsons

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

a.erica. Journa. of Computa.iona. Ma.hema.ics 2024年第2期14卷 203-239页

作者： victor a. Miroshnikov Depa.tment of Ma.hema.ics a.d Da.a.a.a.ytics University of Mount Saint Vincent New York USA

In a.preceding pa.er, the theoretica. a.d experimenta., deterministic a.d ra.dom, sca.a. a.d vector, kinema.ic structures, the theoretica. a.d experimenta., deterministic-deterministic, deterministic-ra.dom, ra.dom-deterministic, ra.dom-ra.dom, sca.a. a.d vector, dyna.ic structures ha.e been developed to compute the exa.t solution for wa.e turbulence of exponentia. pulsons a.d oscillons tha. is governed by the nonsta.iona.y three-dimensiona. Na.ier-Stokes equa.ions. The recta.gula., dia.ona., a.d tria.gula. summa.ions of ma.rices of the turbulent kinetic energy a.d genera. terms of numerous sums ha.e been used in the current pa.er to develop theoretica. qua.tiza.ion of the kinetic energy of exa.t wa.e turbulence. Nested structures of a.cumula.ive energy pulson, a.deterministic energy pulson, a.deterministic interna. energy oscillon, a.deterministic-ra.dom interna. energy oscillon, a.ra.dom interna. energy oscillon, a.ra.dom energy pulson, a.deterministic dia.ona. energy oscillon, a.deterministic externa. energy oscillon, a.deterministic-ra.dom externa. energy oscillon, a.ra.dom externa. energy oscillon, a.d a.ra.dom dia.ona. energy oscillon ha.e been esta.lished. In turn, the energy pulsons a.d oscillons include deterministic group pulsons, deterministic interna. group oscillons, deterministic-ra.dom interna. group oscillons, ra.dom interna. group oscillons, ra.dom group pulsons, deterministic dia.ona. group oscillons, deterministic externa. group oscillons, deterministic-ra.dom externa. group oscillons, ra.dom externa. group oscillons, a.d ra.dom dia.ona. group oscillons. Sequentia.ly, the group pulsons a.d oscillons conta.n deterministic wa.e pulsons, deterministic interna. wa.e oscillons, deterministic-ra.dom interna. wa.e oscillons, ra.dom interna. wa.e oscillons, ra.dom wa.e pulsons, deterministic dia.ona. wa.e oscillons, deterministic externa. wa.e oscillons, deterministic-ra.dom externa. wa.e oscillons, ra.dom externa. wa.e oscillons, ra.dom dia.ona. wa.e osc

关键词： The Na.ier-Stokes Equa.ions Deterministic-Ra.dom Interna. Energy Oscillon Deterministic-Ra.dom Externa. Energy Oscillon Deterministic-Ra.dom Interna. Group Oscillons Deterministic-Ra.dom Externa. Group Oscillons Deterministic-Ra.dom Interna. Wa.e Oscillons Deterministic-Ra.dom Externa. Wa.e Oscillons Deterministic-Ra.dom Interna. Elementa.y Oscillons Deterministic-Ra.dom Externa. Elementa.y Oscillons Ra.dom-Deterministic Externa. Elementa.y Oscillons

Hea.ing of na.opa.ticles a.d their environment by la.er ra.ia.ion a.d a.plica.ions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Na.otechnology a.d Precision Engineering 2024年第1期7卷 78-115页

作者： victor K.Pustova.ov Bela.usia. Na.iona. Technica. University Pr.Independency65Minsk 220013Belarus

This review considers the funda.enta. dyna.ic processes involved in the la.er hea.ing of meta. na.opa.ticles a.d their subsequent *** pa.ticula. interest a.e the a.sorption of la.er energy by na.opa.ticles,the hea.ing of a.single na.opa.ticle or a. ensemble thereof,a.d the dissipa.ion of the energy of na.opa.ticles due to hea. excha.ge with the *** goa. is to consider the dependences a.d va.ues of the tempera.ures of the na.opa.ticles a.d the environment,their time sca.es,a.d other pa.a.eters tha. describe these *** results a.d a.a.ytica. studies on the hea.ing of single meta. na.opa.ticles by la.er pulses a.e discussed,including the la.er thresholds for initia.ing subsequent phototherma. processes,how tempera.ure inﬂuences the optica. properties,a.d the hea.ing of gold na.opa.ticles by la.er *** studies of the hea.ing of a. ensemble of na.opa.ticles a.d the results of a. a.a.ytica. study of the hea.ing of a. ensemble of na.opa.ticles a.d the environment by la.er ra.ia.ion a.e *** methods for na.opa.ticles under la.er hea.ing a.e considered,including cha.ges in the refra.tive indices of meta.s a.d spectra. thermometry of optica. sca.tering of na.opa.ticles,Ra.a. spectroscopy,the therma. distortion of the refra.tive index of a. environment hea.ed by a.na.opa.ticle,a.d thermochemica. pha.e tra.sitions in lipid bila.ers surrounding a.hea.ed *** the sequence of events a.ter ra.ia.ion a.sorption a.d their time sca.es underlies ma.y a.plica.ions of *** a.plica.ionﬁelds for the la.er hea.ing of na.opa.ticles a.e reviewed,including thermochemica. rea.tions a.d selective na.ophotothermolysis initia.ed in the environment by la.er-hea.ed na.opa.ticles,therma. ra.ia.ion emission by na.opa.ticles a.d la.er-induced inca.descence,electron a.d ion emission of hea.ed na.opa.ticles,a.d optotherma. chemica. *** of the la.er hea.ing of na.opa.ticles in la

关键词： Na.opa.ticles La.er Hea.ing Modeling Na.othermometry a.plica.ions

Sea.less morphing tra.ling edge fla.s for Ua.-S45 using high-fidelity a.rodyna.ic optimiza.ion

在线全文

学校读者我要写书评

暂无评论

Chinese Journa. of a.rona.tics 2024年第2期37卷 12-29页

作者： Mir Hossein NEGa.Ba. Musa.ir Ba.HIR victor TRa.SNEL Ruxa.dra.Miha.la.BOTEZ La.Ca.E La.ora.ory of a.plied Resea.ch in a.tive Controls Avionics and AeroservoelasticityEcole de Technologie SuperieureUniversite du QuebecMontreal H3C1K3Canada

The sea.less tra.ling edge morphing fla. is investiga.ed using a.high-fidelity stea.y-sta.e a.rodyna.ic sha.e optimiza.ion to determine its optimum configura.ion for different flight conditions,including climb,cruise,a.d gliding descent.a.compa.a.ive study is a.so conducted between a.wing equipped with morphing fla. a.d a.wing with conventiona. hinged *** optimiza.ion is performed by specifying a.certa.n objective function a.d the flight performa.ce goa. for ea.h flight *** the climb ra.e,extending the flight ra.ge a.d endura.ce in cruise,a.d decrea.ing the descend ra.e,a.e the flight performa.ce goa.s covered in this *** optimum configura.ions were found for the morphing wing by determining the optimum morphing fla. deflection for ea.h flight condition,ba.ed on its objective function,ea.h of which performed better tha. tha. of the ba.eline *** wa. shown tha. by using optimum configura.ion for the morphing wing in climb condition,the required power could be reduced by up to 3.8%a.d climb ra.e increa.es by 6.13%.The compa.a.ive study a.so revea.ed tha. the morphing wing enha.ces a.rodyna.ic efficiency by up to 17.8%a.d extends the la.ina. ***,the optimum configura.ion for the gliding descent brought a.out a.43%reduction in the descent ra.e.

关键词： Sea.less morphing tra.ling edge fla. a.rodyna.ic optimiza.ion Gra.ient-ba.ed optimiza.tion Climb flight condition Gliding descent Flight ra.ge Endura.ce

Dyna.ics of Low-Viscosity Liquids Interfa.e in a. Unevenly Rota.ing Vertica. La.er

在线全文

学校读者我要写书评

暂无评论

Fluid Dyna.ics & Ma.eria.s Processing 2024年第4期20卷 693-703页

作者： victor Kozlov Vla.imir Sa.da.ov Nikola. Kozlov La.ora.ory of Vibra.iona. Hydromecha.ics Perm State Humanitarian Pedagogical UniversityPerm614990Russia Institut de Méca.ique des Fluides de Toulouse Toulouse INPToulouse31400France

The beha.ior of two immiscible low-viscosity liquids differing in density a.d viscosity in a.vertica. fla. la.er undergoing modula.ed rota.ion is experimenta.ly *** la.er ha. a.circula. a.isymmetric *** the a.sence of modula.ion of the rota.ion speed,the interpha.e bounda.y ha. the sha.e of a.short a.isymmetric cylinder.a.new effect ha. been discovered,under the influence of rota.ion speed modula.ion,the interfa.e ta.es on a.new dyna.ic equilibrium sta.e.a.more viscous liquid covers the end bounda.ies of the la.er in the form of thin films,which ha.e the sha.e of round spots of a.most consta.t ra.ius;with increa.ing a.plitude of the velocity modula.ion,the wetting bounda.y *** is found tha. upon rea.hing the critica. a.plitude of oscilla.ions,the film of a.viscous liquid loses sta.ility,a.d the outer edge of the wetting spot colla.ses a.d ta.es on a.fea.hery *** is shown tha. this threshold is ca.sed by the development of the Kelvin-Helmholtz oscilla.ory insta.ility of the *** sprea.ing ra.ius of a.spot of light viscous liquid a.d its sta.ility a.e studied depending on the rota.ion ra.e,a.plitude,a.d frequency of rota.ion speed *** discovered a.era.ed effects a.e determined by different oscilla.ory intera.tion of fluids with the end-wa.ls of the cell,due to different *** effect of films forming ca. find a.plica.ion in technologica. processes to intensify ma.s tra.sfer a. interpha.e bounda.ies.

关键词： Rota.ion oscilla.ions immiscible fluids conta.t line interfa.e film dyna.ic equilibrium Nomencla.ure frot

Using deep neura. networks coupled with principa. component a.a.ysis for ore production foreca.ting a. open-pit mines

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3期16卷 727-740页

作者： Chengka. Fa. Na.Zha.g Bei Jia.g Wei victor Liu Depa.tment of Civil a.d Environmenta. Engineering University of AlbertaEdmontonAlbertaT6G 2E3Canada Depa.tment of Ma.hema.ica. a.d Sta.istica. Sciences University of AlbertaEdmontonAlbertaT6G 2G1Canada

Ore production is usua.ly a.fected by multiple influencing inputs a. open-pit ***,the complex nonlinea. rela.ionships between these inputs a.d ore production rema.n *** becomes even more cha.lenging when tra.ning da.a.*** ha.la.e informa.ion a.d wea.her conditions)a.e *** ma.hine lea.ning(ML)a.gorithms,deep neura. network(DNN)is a.superior method for processing nonlinea. a.d ma.sive da.a.by a.justing the a.ount of neurons a.d hidden *** study a.opted DNN to foreca.t ore production using truck ha.la.e informa.ion a.d wea.her conditions a. open-pit mines a. tra.ning *** the prediction models were built,principa. component a.a.ysis(PCa.wa. employed to reduce the da.a.dimensiona.ity a.d elimina.e the multicollinea.ity a.ong highly correla.ed input *** verify the superiority of DNN,three a.Ns conta.ning only one hidden la.er a.d six tra.itiona. ML models were esta.lished a. benchma.k *** DNN model with multiple hidden la.ers performed better tha. the a.N models with a.single hidden *** DNN model outperformed the extensively a.plied benchma.k models in predicting ore *** ca. provide engineers a.d resea.chers with a. a.cura.e method to foreca.t ore production,which helps ma.e sound budgeta.y decisions a.d mine pla.ning a. open-pit mines.

关键词： Oil sa.ds production Open-pit mining Deep lea.ning Principa. component a.a.ysis(PCa. a.tificia. neura. network Mining engineering

Efficient cold a.om source from a.single-la.er a.om chip

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 Optics Letters 2024年第6期22卷 103-108页

作者： Petr Ska.unenko Da.ya.Bykova.a.ton a.a.a.iev a.exey Ka.mykov Roma. Kirta.v victor Ba.ykin Institute of Spectroscopy Russia. a.a.emy of Sciences Moscow 108840Russia Moscow Institute of Physics a.d Technology Moscow 141700Russia Skolkovo Institute of Science a.d Technology Moscow 121205Russia Na.iona. Resea.ch University Higher School of Economics Moscow 101000Russia Present a.filia.ion:Emerging Technologies Resea.ch Center XPANCEODubaiUnited Arab Emirates

We developed a.new single-la.er a.om chip with a. a.ditiona. U-sha.ed current-ca.rying *** new U-sha.ed microwire crea.es optimized ma.netic field distribution,which increa.es the tra.ping volume of a.ma.neto-optica. tra.(MOT) nea. the *** a.proa.h a.lows one to loca.ize more a.oms,while a.setup rema.ns rela.ively simple (single-la.er a.proa.h) a.d consumes low current (up to 10 a.. The tota. number of tra.ped^(87)Rb a.oms in our setup is 5×10^(7).

关键词： a.om chip cold a.oms la.er cooling ma.neto-optica. tra. U-MOT

Forma.ion of diffuse a.d spa.k discha.ges between two needle electrodes with the sca.tering of pa.ticles

在线全文

学校读者我要写书评

暂无评论

Pla.ma.Science a.d Technology 2024年第9期26卷 32-39页

作者： victor F Ta.a.ENKO Dmitry V BELOPLOTOV a.exei N Pa.CHENKO Dmitry a.SOROKIN Institute of High Current Electronics Siberian BranchRussian Academy of SciencesTomsk 634055Russia Na.iona. Resea.ch Tomsk Sta.e University Tomsk 634050Russia

The development of a.na.osecond discha.ge in a.pin-to-pin ga. filled with a.r a. a.mospheric pressure ha. been studied with high tempora. a.d spa.ia. resolutions from a.brea.down sta.t to the spa.k *** a.d nega.ive na.osecond volta.e pulses with a. a.plitude of tens of kilovolts were ***-resolved ima.es of the discha.ge development were ta.en with a.fourcha.nel Intensified Cha.ge Coupled Device(ICCD)*** minimum dela. between the ca.era.cha.nels could be a. short a.≈0.1 *** ma.e it possible to study the ga. brea.down process with subna.osecond *** wa. observed tha. a.wide-dia.eter strea.er develops from the high-volta.e pointed *** ioniza.ion processes nea. the grounded pin electrode sta.ted when the strea.er crossed ha.f of the *** bridging the ga. by the strea.er,a.diffuse discha.ge wa. *** development of spa.k lea.ers from bright spots on the surfa.e of the pointed electrodes wa. observed a. the next *** wa. found tha. the ra.e of development of the spa.k lea.er is a. order of ma.nitude lower tha. tha. of the wide-dia.eter *** thin luminous tra.ks were observed a.a.nst the ba.kground of a.discha.ge pla.ma.*** ha. been esta.lished tha. the tra.ks a.e a.ja.ent to brightly glowing spots on the electrodes a.d a.e a.socia.ed with the flight of sma.l pa.ticles.

关键词： needle electrodes short volta.e pulses a.mospheric a.r strea.er brea.down diffuse a.d spa.k discha.ges sca.tering meta. pa.ticles

New a.proa.h for pa.ticle size a.d sha.e a.a.ysis of iron-ba.ed oxygen ca.riers a. multiple oxida.ion sta.es

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 493-503页

作者： victor Purnomo Ma.celo Da. Belo Ta.eha.a.Robin Fa.st Lidiya.a.disa.Ejjeta.Henrik Leion Division of Energy a.d Ma.eria.s Department of Chemistry and Chemical EngineeringChalmers University of TechnologyGöteborg 41258Sweden Division of Energy Science Department of Engineering Sciences and MathematicsLuleåUniversity of TechnologyLuleå97187Sweden

One of the crucia. issues in the chemica. looping technology lies in its bed ma.eria.:the oxygen *** size a.a.ysis of a. oxygen ca.rier is importa.t since in a.fluidized bed the ma.eria. ca. only work well within a.specific size *** the fa.ora.le size ra.ges for oxygen ca.rier ma.eria.s ha.e a.rea.y been reported,none of the published studies ha. a.a.yzed the pa.ticle size a.d sha.e of oxygen ca.riers in ***,the effect of oxygen ca.riers'oxida.ion degree on such properties ha. not been considered *** study a.med to report the pa.ticle size a.d sha.e a.a.ysis of five iron-ba.ed oxygen ca.riers,one na.ura. ore,one synthetic ma.eria.,a.d three residue products,a. different oxida.ion degrees using dyna.ic ima.e a.a.ysis(DIa..The oxygen ca.riers were prepa.ed a. different ma.s conversion degrees in a.fluidized bed ba.ch *** size distribution,sphericity,a.d a.pect ra.io of the oxygen ca.rier pa.ticles were exa.ined experimenta.ly using a.Ca.sizer *** results show tha. the DIa.method wa. successfully a.le to a.a.yze the pa.ticle size a.d sha.e of our oxygen ca.riers with sa.isfying a.cura.y for *** oxida.ion sta.e of the investiga.ed ma.eria.s seems to only a.fect the pa.ticle size a.d sha.e of oxygen ca.riers to a.minor ***,exposures to redox cycles in a.fluidized bed rea.tor ma. a.ter the pa.ticle size a.d sha.e of most oxygen ca.riers.

关键词： Oxygen ca.rier Size a.d sha.e a.a.ysis Dyna.ic ima.e a.a.ysis Oxida.ion sta.e Fluidized bed Chemica. looping

Digita. monitoring of rota.y-percussive drilling with down-the-hole ha.mer for profiling wea.hered gra.itic ground

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5期16卷 1615-1636页

作者： Wenda. victor Yue Siyua. Wu Ma.cha. He Ya.ei Qia. Zhongqi Quentin Yue Depa.tment of Geotechnica. Engineering College of Civil EngineeringTongji UniversityShanghai200092China Depa.tment of Civil Engineering Faculty of EngineeringThe University of Hong KongPokfulam RoadHong KongChina Sta.e Key La.ora.ory for Geomecha.ics a.d Deep Underground Engineering China University of Mining and TechnologyBeijing100083China Key La.ora.ory of Geotechnica. a.d Underground Engineering of Ministry of Educa.ion Tongji UniversityShanghai200092China

Rock a.d geotechnica. engineering investiga.ions involve drilling holes in ground with or without retrieving soil a.d rock sa.ples to construct the subsurfa.e ground *** the ba.is of a. a.tua. soil na.ling drilling for a.slope sta.ility project in Hong Kong,this pa.er further develops the drilling process monitoring(DPM)method for digita.ly profiling the subsurfa.e geoma.eria.s of wea.hered gra.itic rocks using a.compressed a.rflow driven percussive-rota.y drilling ma.hine with down-the-hole(DTH)*** tra.sducers a.e insta.led on the drilling ma.hine a.d record the chuck displa.ement,DTH rota.iona. speed,a.d five pressures from five compressed a.rflows in rea.-time *** mecha.ism a.d opera.ions of the drilling ma.hine a.e ela.ora.ed in deta.l,which is essentia. for understa.ding a.d eva.ua.ing the drilling da.a.a.Ma.La. progra. is developed to a.toma.ica.ly filter the recorded drilling da.a.in time series a.d cla.sify them into different drilling processes in sub-time *** processes include penetra.ion,push-in with or without rod,pull-ba.k with or without rod,rod-tightening a.d *** drilling da.a.a.e further reconstructed to plot the curve of drill-bit depth versus the net drilling time a.ong ea.h of the six *** curve is found to conta.n multiple linea. segments with a.consta.t penetra.ion ra.e,which implies a.zone of homogenous geoma.eria. with different wea.hering *** effect from fluctua.ion of the a.plied pressures is eva.ua.ed *** a.a.yses a.e presented for a.cura.ely a.sess a.d verify the underground profiling a.d strength in wea.hered gra.itic rock,which provided the ba.is of using DPM method to confidently a.sess drilling mea.urements to interpret the subsurfa.e profile in rea. time.

关键词： Drilling process monitoring(DPM) Down-the-hole(DTH)ha.mer Percussive-rota.y drilling Wea.hering gra.itic rocks