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a.go floa.s revea.ing bimoda.ity of la.ge-sca.e mid-depth circula.ion in the North a.la.tic

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a.ta.Ocea.ologica.Sinica 2008年第2期27卷 1-10页

作者： CHU Peter C IVa.OV leonid M MELNICHENKO Oleg V LI Rongfeng Depa.tment of Ocea.ogra.hy Naval Postgraduate School Monterey California USA Interna.iona. Pa.ific Resea.ch Center University of Hawaii at Manoa Hawaii USA Institute of a.mospheric Physics Chinese Academy of Sciences Beijing 100029 China

a.a.ysis of a.go floa. tra.ectories a. 1 000 m a.d tempera.ure a. 950 m in the North a.la.tic between November 2003 a.d Ja.ua.y 2005 demonstra.es the existence of two different circula.ion modes with fa.t tra.sition between them. Ea.h mode ha. a.pa.r of cyclonic - a.ticyclonic gyres. The difference is the loca.ion of the cyclonic gyre. The cyclonic gyre stretches from southea.t to northwest in the first mode a.d from the southwest to the northea.t in the second mode. The observed modes strongly a.fect the hea. a.d sa.t tra.sport in the North a.la.tic. In pa.ticula., the second mode slows down the westwa.d tra.sport of the wa.m a.d sa.ine wa.er from the Mediterra.ea. Sea.

关键词： a.go tra.ectory da.a a.la.tic Ocea. biomoda.ity mid-depth circula.ion optima. spectra. decomposition

Long-ra.ge a.tra.tive forces extending from the a.umina.s na.ola.er surfa.e in a.ueous solutions

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Interna.iona. Journa. of Sma.t a.d Na.o Ma.eria.s 2015年第3期6卷 171-194页

作者： leonid a.Ka.edin Fred Tepper Ta.ia.a.G.Ka.edin a.gonide Corpora.ion Nanomaterial&Filtration Technologies291 Power CourtSanfordFL 32771USA

a.uminum oxide-hydroxide na.ola.er with a.thickness of a.proxima.ely 1.2 nm is electroa.hesively deposited onto silicious support ma.eria. with la.ge surfa.e a.ea.of a.out 50 m2/g,forming a.highly electropositive composite of boehmite na.ola.er in the form of monocrysta.line oxide/hydroxide(α-a.2O3·H2O)on the second electronega.ive *** composite ca. be viewed a. a.sphere with a.rough surfa.e a.d cha.ge density of a.proxima.ely 0.08 C/*** crea.es a.significa.t electric field with negligible screening(ka.1)in the region close to the surfa.e of the *** field a.tra.ts na.o-a.d micron-sized pa.ticles from a. fa. a. 200μm in a.few seconds,ma.y orders of ma.nitude grea.er tha. conventiona. Derja.uin–La.da.–Verwey–Overbeek(DLVO)theory,which predicts only na.ometer-sca.e effects a.ising from the presence of the *** strong electric field on the surfa.e is then a.le to reta.n sma.l pa.ticles such a. viruses,a.omica.ly thin sheets of gra.hene oxide,RNa.DNa.proteins,dyes a. well a. hea.y meta.s such a. coba.t,a.senic,a.d ***’s na.ola.er surfa.e ca. be further functiona.ized by a.ding other submicron or na.o-sized pa.ticles to ta.get a.specific *** exa.ple is shown where a.umina.na.ola.er is coa.ed with na.o-sized iron monohydra.e to yield a. a.senic sorbent tha. shows high sorption ca.a.ity.

关键词： a.umina.na.ola.er electric double la.er electrosta.ic a.sorption

Pristine point of zero cha.ge (p.p.z.c.) a.d zeta.potentia.s of boehmite’s na.ola.er a.d na.ofiber surfa.es

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Interna.iona. Journa. of Sma.t a.d Na.o Ma.eria.s 2016年第1期7卷 1-21页

作者： leonid a.Ka.edin Fred Tepper Ta.ia.a.G.Ka.edin Depa.tment of Chemistry Argonide Corporation291 Power CourtSanfordFL 32771USA

The pristine point of zero cha.ge(p.p.z.c)a.d zeta.potentia. a. a.function of pH of boehmite oxide/hydroxide(α-a._(2)O_(3)·H_(2)O)ha.e been determined for three filter *** a.tive component in the first two filter media.is boehmite na.ofibers,only 2 nm in dia.eter a.d a.out 300 nm *** na.ofibers crea.e high zeta.potentia.(ζtrue≥46 mV)in a.ueous solutions in the pH ra.ge of 3–*** *** were determined to be 11.60±0.15 for na.ofibers gra.ted onto microgla.s fibers a.d 11.40±0.15 for a.glomera.ed *** the third filter media.a.boehmite na.ola.er in the form of monocrysta.line oxide/hydroxide with a.thickness of a.proxima.ely 1.2 nm is electroa.hesively deposited onto siliceous support ma.eria. with la.ge surfa.e a.ea.of a.out 50 m^(2)/g,therefore forming a.highly electropositive composite of boehmite na.ola.er on the second highly electronega.ive ***’s oxide-hydroxide na.ola.er surfa.e crea.es high zeta.potentia.(ζtrue≥50 mV)in a.ueous solutions in the pH ra.ge of 3–*** *** wa. determined to be 11.38±*** reported va.ues a.e within a.cura.y,but they a.e much higher tha. the va.ues reported in the litera.ure.X-ra. powder diffra.tion da.a.were supplemented by microscopy,infra.ed spectroscopy in order to cha.a.terize fully synthetic boehmite surfa.es.

关键词： Boehmite’s na.ola.er pristine point of zero cha.ge(p.p.z.c) zeta.potentia. isoelectric point(i.e.p.)

U–Pb La.ICP-MS geochronology of polygenetic zircons from Beshta.a.d Ka.enista.a.intrusions(the Grea.er Ca.ca.us)

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a.ta.Geochimica 2022年第6期41卷 1019-1029页

作者： Da.id Shengelia.leonid Shumlya.skyy Giorgi Chichina.ze Ta.a.a.Tsutsuna.a.Giorgi Beridze Ira.li Ja.a.hishvili a..Ja.elidze Institute of Geology of Iv.Ja.a.hishvili Tbilisi Sta.e University TbilisiGeorgia School of Ea.th a.d Pla.eta.y Sciences Curtin UniversityPerthAustralia M.P.Semenenko Institute of Geochemistry Mineralogy and Ore FormationKyivUkraine

The Beshta.Ka.enista.a.intrusions a.e loca.ed in the Ma.n Ra.ge structura. zone of the Grea.er *** a.e composed of tona.itic gneisses tha. genetica.ly resemble gra.ites of the tholeiitic series of the ophiolitic *** Beshta.Ka.enista.a.orthogneisses a.d a.socia.ed rocks of the na.pes differ ma.kedly from those of the Ma.n Ra.ge *** of them were overthrust to the Ma.n Ra.ge zone during the Bretonia. *** a.e of their protolith a.d the meta.orphism a.e still not *** the zircon U-Pb La.ICP-MS da.ing two a.e popula.ions of zircons ha.e been distinguished in the rocks of the Beshta.Ka.enista.a.*** a.e of the ma.n popula.ion of zircons from orthogneisses is 426-300 *** a.e groups ca. be distinguished in this *** ma.n group yielded a.Concordia.a.e of386.9±1.4 *** a.e a.so sma.ler pea.s a. 409-405,375-373,a.d 351 *** oldest a.es(426-395 Ma.were detected in the core pa.ts of the complex *** a.sume tha. the crysta.liza.ion of the pa.enta. for orthogneisses rocks(tona.ities)took pla.e a. 410-395 Ma.wherea. the Concordia.a.e of 386.9±1.4 Ma.a.d a.pea. a. 375-373 Ma.correspond to the meta.orphic *** whole meta.orphic cycle,including progressive a.d regressive sta.es,occurred between 395 a.d 370 ***,da.ed in the Beshta.Ka.enista.a.intrusion a.350 Ma.a.d younger,correspond to the La.e Va.isca. *** da.ed 3102-2769 Ma.represent xenocrysts ca.tured by the melts during their forma.ion from the a.cient rocks in the crysta.line ba.ement.

关键词： The Grea.er Ca.ca.us Ma.ma.ism Meta.orphism Orthogneisses U–Pb zircon da.ing

Periodic Motion Pla.ning a.d Control for Double Rota.y Pendulum via.Virtua. Holonomic Constra.nts

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IEEE/Ca. Journa. of a.toma.ica.Sinica 2019年第1期6卷 291-298页

作者： Zeguo Wa.g leonid B.Freidovich Honghua.Zha.g Beijing Institute of Control Engineering IEEE the Robotics a.d Control La.ora.ory (www.control.tfe.umu.se) Department of Applied Physics and ElectronicsUmea University

Periodic motion pla.ning for a. under-a.tua.ed system is ra.her difficult due to differentia. dyna.ic constra.nts imposed by pa.sive dyna.ics, a.d it becomes more difficult for a.system with higher undera.tua.ion degree, tha. is with a.higher difference between the number of degrees of freedom a.d the number of independent control inputs. However, from a.other point of view, these constra.nts a.so mea. some rela.ion between sta.e va.ia.les a.d could be used in the motion *** consider a.double rota.y pendulum, which ha. a. undera.tua.ion degree 2. a.novel periodic motion pla.ning is presented ba.ed on a. optimiza.ion sea.ch. a.necessa.y condition for existence of the whole periodic tra.ectory is given beca.se of the higher undera.tua.ion degree of the system. Moreover this condition is given to ma.e virtua. holonomic constra.nt(VHC) ba.ed control design fea.ible. Therefore, a. initia. guess for the optimiza.ion of pla.ning a.fea.ible periodic motion is ba.ed on this necessa.y condition. Then, VHCs a.e used for the system tra.sforma.ion a.d tra.sverse linea.iza.ion is used to design a.sta.ic sta.e feedba.k controller with periodic ma.rix function ga.n. The controller ga.n is found through a.other optimiza.ion procedure. The effectiveness of initia. guess a.d performa.ce of the closed-loop system a.e illustra.ed through numerica. simula.ions.

关键词： Double rota.y pendulum periodic motion pla.ning under-a.tua.ed mecha.ica. systems virtua. holonomic constra.nt (VHC)

a.workflow for Susta.na.le Development Goa.s indica.ors a.sessment ba.ed on high-resolution sa.ellite da.a

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Interna.iona. Journa. of Digita. Ea.th 2020年第2期13卷 309-321页

作者： Na.a.iia.Kussul Mykola.La.reniuk a.drii Kolotii Sergii Ska.un Olena.Ra.oid leonid Shumilo Depa.tment of Spa.e Informa.ion Technologies a.d Systems Space Research Institute NAS Ukraine&SSA UkraineKyivUkraine Depa.tment of Informa.ion Security National Technical University of Ukraine‘Igor Sikorsky Kyiv Polytechnic Institute’KyivUkraine Depa.tment of Geogra.hica. Sciences University of MarylandCollege ParkMDUSA Na.a.Godda.d Spa.e Flight Center Code 619 GreenbeltMDUSA Depa.tment of Ecology a.d Life Sa.ety National University of Life and Environmental Sciences of UkraineKyivUkraine

For eva.ua.ing the progresses towa.ds a.hieving the Susta.na.le Development Goa.s(SDGs),a.globa. indica.or fra.ework wa. developed by the UN Inter-a.ency a.d Expert Group on Susta.na.le Development Goa.s *** this pa.er,we propose a. improved methodology a.d a.set of workflows for ca.cula.ing SDGs *** ma.n improvements consist of using modera.e a.d high spa.ia. resolution sa.ellite da.a.a.d sta.e-of-the-a.t deep lea.ning methodology for la.d cover cla.sifica.ion a.d for a.sessing la.d *** the Europea. Network for Observing our Cha.ging Pla.et(ERa.PLa.ET),three SDGs indica.ors a.e *** this resea.ch,ha.monized La.dsa. a.d Sentinel-2 da.a.a.e a.a.yzed a.d used for la.d productivity a.a.ysis a.d yield a.sessment,a. well a. La.dsa. 8,Sentinel-2 a.d Sentinel-1 time series a.e utilized for crop *** ca.cula.e for the whole territory of Ukra.ne SDG indica.ors:15.1.1–‘Forest a.ea.a. proportion of tota. la.d a.ea.;15.3.1–‘Proportion of la.d tha. is degra.ed over tota. la.d a.ea.;a.d 2.4.1–‘Proportion of a.ricultura. a.ea.under productive a.d susta.na.le a.riculture’.Workflows for ca.cula.ing these indica.ors were implemented in a.Virtua. La.ora.ory *** conclude tha. newly a.a.la.le high-resolution remote sensing products ca. significa.tly improve our ca.a.ity to a.sess severa. SDGs indica.ors through dedica.ed workflows.

关键词： ERa.PLa.ET cla.sifica.ion ma.s Essentia. Va.ia.les crop productivity yield a.sessment nexus a.proa.h

Reduction in Complexity of the a.gorithm by Increa.ing the Used Memory - a. Exa.ple

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a.erica. Journa. of Computa.iona. Ma.hema.ics 2013年第3期3卷 38-40页

作者： leonid Kugel Victor a. Gotlib The Fa.ulty of Sciences Holon Institute of Technology (H. I.T) Holon Israel

a. a.gorithm complexity, or its efficiency, mea.ing its time of eva.ua.ion is the focus of prima.y ca.e in a.gorithmic problems solving. Ra.sing the used memory ma. reduce the complexity of a.gorithm dra.tica.ly. We present a. exa.ple of two a.gorithms on finite set, where cha.ge the a.proa.h to the sa.e problem a.d introduction a.memory a.ra. a.lows decrea.e the complexity of the a.gorithm from the order O(n2) up to the order O(n).

关键词： a.gorithm Complexity Reduction Memory Usa.e

Revisiting cla.sica. SIR modelling in light of the COVID-19 pa.demic

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Infectious Disea.e Modelling 2023年第1期8卷 72-83页

作者： leonid Ka.a.hev Erin L.La.dguth Jon Gra.a. Ma.hema.ica. Sciences University of MontanaMissoulaUSA Center for Popula.ion Hea.th Resea.ch School of Public and Community Health SciencesUniversity of MontanaMissoulaUSA

Ba.kground:Cla.sica. infectious disea.e models during epidemics ha.e widesprea. usa.e,from predicting the proba.ility of new infections to developing va.cina.ion pla.s for informing policy decisions a.d public hea.th ***,it is importa.t to correctly cla.sify reported da.a.a.d understa.d how this impa.ts estima.ion of model *** COVID-19 pa.demic ha. provided a. a.unda.t a.ount of da.a.tha. a.low for thorough testing of disea.e modelling a.sumptions,a. well a. how we think a.out cla.sica. infectious disea.e modelling ***:We a.m to a.sess the a.propria.eness of model pa.a.eter estima.es a.d preiction results in cla.sica. infectious disea.e compa.tmenta. modelling fra.eworks given a.a.la.le da.a.types(infected,a.tive,qua.a.tined,a.d recovered ca.es)for situa.ions where just one da.a.type is a.a.la.le to fit the *** ma.n focus is on how model prediction results a.e dependent on da.a.being a.signed to the right model ***:We first use simula.ed da.a.to explore pa.a.eter relia.ility a.d prediction ca.a.ility with three formula.ions of the cla.sica. Susceptible-Infected-Removed(SIR)modelling *** then explore two a.plica.ions with reported da.a.to a.sess which da.a.a.d models a.e sufficient for relia.le model pa.a.eter estima.ion a.d prediction a.cura.y:a.cla.sica. influenza.outbrea. in a.boa.ding school in Engla.d a.d COVID-19 da.a.from the fa.l of 2020 in Missoula.County,Monta.a.***:We demonstra.ed the ma.nitude of pa.a.eter estima.ion errors a.d subsequent prediction errors resulting from da.a.miscla.sifica.ion to model compa.tments with simula.ed *** showed tha. prediction a.cura.y in ea.h formula.ion of the cla.sica. disea.e modelling fra.ework wa. la.gely determined by correct da.a.cla.sifica.ion versus *** a.cla.sica. exa.ple of influenza.epidemics in a. Engla.d boa.ding school,we a.gue tha. the Susceptible-Infected-Qua.a.tined-Recovered(SIQR)model is more a.propria.

关键词： Ba.ic disea.e reproduction number Communica.le disea.e control Corona.irus COVID-19 Disea.e tra.smission Epidemics Epidemiology Influenza.da.a Ma.hema.ica. models Monta.a SIR models

Investiga.ion into high-pressure beha.ior of MnTiO_3:X-ra. diffra.tion a.d Ra.a. spectroscopy with dia.ond a.vil cells

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Geoscience Frontiers 2011年第1期2卷 107-114页

作者： Xia.g Wu Sha. Qin leonid Dubrovinsky Key La.ora.ory of Orogenic Belts a.d Crusta. Evolution MOE ＆ School of Earth and Space Sciences Peking University Beijing 100871 China Ba.erisches Geoinstitut Universita＇t Bayreuth Bayreuth D-95440 Germany

The structura. sta.ility of ma.ga.ese tita.a.e MnTiO3 a. high pressure wa. investiga.ed by X-ra. diffra.tion a.d Ra.a. spectroscopy with dia.ond a.vil cells. Ilmenite-type MnTiO3 is sta.le a. lea.t to 26.6 GPa. a.d lithium nioba.e type MnTiO3 reversibly tra.sforms a. room tempera.ure to perovskite a. 2.0 GPa. Bulk moduli （K300） of ilmenite, lithium nioba.e a.d perovskite a.e 174（4） GPa. 179 （8） GPa. a.d 208（5） GPa. respectively （a. fixed first pressure deriva.ive K＇ = 4）. The Griineisen pa.a.eter T ha. been estima.ed to be 1.28 for ilmenite a.d 1.75 for perovskite. In ilmenite pha.e, TiO6 octa.edra.become more regula. with increa.ing pressure. In perovskite pha.e structura. distortion increa.es with pressure increa.e.

关键词： MnTiO3 Ilmenite Lithium nioba.e Perovskite Pha.e tra.sition Equa.ion of sta.e