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Nonlinea. wa.e dis.ers.on in monoa.omic cha.ns.with lumped a.d dis.ributed ma.s.s.dis.rete a.d continuum models

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a.plied Ma.hema.ics.a.d Mecha.ics.Englis. Edition) 2024年第4期45卷 633-648页

作者： E.GHa.a.LOO s.el-BORGI s.hool of Mecha.ica. Engineering Shiraz UniversityShiraz 71963-16548Iran Mecha.ica. Engineering Progra. Texas A&M University at QatarDoha 23874Qatar

The ma.n objective of this.pa.er is.to inves.iga.e the influence of inertia.of nonlinea. s.rings.on the dis.ers.on beha.ior of dis.rete monoa.omic cha.ns.with lumped a.d dis.ributed *** developed model ca. repres.nt the wa.e propa.a.ion problem in a.non-homogeneous.ma.eria. cons.s.ing of hea.y inclus.ons.embedded in a.*** inclus.ons.a.e idea.ized by lumped ma.s.s.a.d the ma.rix between a.ja.ent inclus.ons.is.modeled by a.nonlinea. s.ring with dis.ributed ***,the model is.ca.a.le of depicting the wa.e propa.a.ion in bi-ma.eria. ba.s.wherein the firs. ma.eria. is.repres.nted by a.rigid pa.ticle a.d the s.cond one is.repres.nted by a.nonlinea. s.ring with dis.ributed *** dis.rete model of the nonlinea. monoa.omic cha.n with lumped a.d dis.ributed ma.s.s.is.firs. cons.dered,a.d a.clos.d-form expres.ion of the dis.ers.on rela.ion is.obta.ned by the s.cond-order Linds.edt-Poinca.e method(LPM).Next,a.continuum model for the nonlinea. monoa.omic cha.n is.derived directly from its.dis.rete la.tice model by a.s.ita.le continua.iza.ion *** s.bs.quent us. of the s.cond-order method of multiple s.a.es.MMs.fa.ilita.es.the deriva.ion of the corres.onding nonlinea. dis.ers.on rela.ion in a.clos.d *** novelties.of the pres.nt s.udy cons.s. of(i)cons.dering the inertia.of nonlinea. s.rings.on the dis.ers.on beha.ior of the dis.rete ma.s.s.ring cha.ns.(ii)developing the s.cond-order LPM for the wa.e propa.a.ion in the dis.rete cha.ns.a.d(iii)deriving a.continuum model for the nonlinea. monoa.omic cha.ns.with lumped a.d dis.ributed ***,a.pa.a.etric s.udy is.conducted to exa.ine the effects.of the des.gn pa.a.eters.a.d the dis.ributed s.ring ma.s.on the nonlinea. dis.ers.on rela.ions.a.d pha.e velocities.obta.ned from both the dis.rete a.d continuum *** pa.a.eters.include the ra.io of the s.ring ma.s.to the lumped ma.s.the nonlinea. s.iffnes. coefficient of the s.ring,a.d the wa.e a.plitude.

关键词： nonlinea. ma.s.s.ring cha.n dis.rete model continuum model Linds.edtPoinca.e method(LPM) method of multiple s.a.es.MMs. dis.ers.on pha.e velocity

Pa.ticle s.a.m Optimiza.ion-Ba.ed Hyperpa.a.eters.Tuning of Ma.hine Lea.ning Models.for Big COVID-19 Da.a.a.a.ys.s

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Journa. of Computer a.d Communica.ions 2024年第3期12卷 160-183页

作者： Hend s. s.0}em Moha.ed a. Mea. Gha.a.s. el-Ta.eel Depa.tment of Computer s.iences Suez Canal University Ismailia Egypt

a.a.yzing big da.a. es.ecia.ly medica. da.a. helps.to provide good hea.th ca.e to pa.ients.a.d fa.e the ris.s.of dea.h. The COVID-19 pa.demic ha. ha. a.s.gnifica.t impa.t on public hea.th worldwide, empha.izing the need for effective ris. prediction models. Ma.hine lea.ning (ML) techniques.ha.e s.own promis. in a.a.yzing complex da.a.pa.terns.a.d predicting dis.a.e outcomes. The a.cura.y of thes. techniques.is.grea.ly a.fected by cha.ging their pa.a.eters. Hyperpa.a.eter optimiza.ion pla.s.a.crucia. role in improving model performa.ce. In this.work, the Pa.ticle s.a.m Optimiza.ion (Ps.) a.gorithm wa. us.d to effectively s.a.ch the hyperpa.a.eter s.a.e a.d improve the predictive power of the ma.hine lea.ning models.by identifying the optima. hyperpa.a.eters.tha. ca. provide the highes. a.cura.y. a.da.a.et with a.va.iety of clinica. a.d epidemiologica. cha.a.teris.ics.linked to COVID-19 ca.es.wa. us.d in this.s.udy. Va.ious.ma.hine lea.ning models. including Ra.dom Fores.s. Decis.on Trees. s.pport Vector Ma.hines. a.d Neura. Networks. were utilized to ca.ture the complex rela.ions.ips.pres.nt in the da.a. To eva.ua.e the predictive performa.ce of the models. the a.cura.y metric wa. employed. The experimenta. findings.s.owed tha. the s.gges.ed method of es.ima.ing COVID-19 ris. is.effective. When compa.ed to ba.eline models. the optimized ma.hine lea.ning models.performed better a.d produced better res.lts.

关键词： Big COVID-19 Da.a Ma.hine Lea.ning Hyperpa.a.eter Optimiza.ion Pa.ticle s.a.m Optimiza.ion Computa.iona. Intelligence

La.ge ma.netoca.oric effect a.d ma.netic properties.of EuRhO3

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Journa. of Ra.e Ea.ths 2024年第9期42卷 1724-1729页

作者： M.La.s.i M.s.0}ieddine a.eloua.i a.el Ha.hmi s.el Oua.bi R.Mouba. La.ora.ory of Energy a.d Ma.eria.s.Engineering (LGEM) University of Sultan Moulay SlimaneFaculty of Science and Technology (FST) Ins.itute of a.plied Phys.cs.(Ia.)-s.hool of Indus.ria. Ma.a.ement (EMINEs. Mohammed Ⅵ Polytechnic University Na.iona. s.hool of a.plied s.iences.(ENs.0} University of Sultan Moulay Slimane La.ora.ory of Mecha.ics Production and Industrial Engineering (LMPGI)Higher School of Technology of Casablanca (ESTC)University of Hassan Ⅱ Casablanca La.ora.ory of Ra.ia.ion on Ma.ter a.d Ins.rumenta.ion (LRMI) Faculty of Science and Technology (FST) SettatHassan Ⅰ University La.oa.ory of Phys.cs.of a.va.ced Ma.eria.s.a.d Thermic (LPMa.) Faculty of Science Ain Chock (FSAC)University of Hassan Ⅱ Casablanca

We report on the s.ructura.,ma.netic,a.d ma.netoca.oric properties.of *** oxida.ion s.a.es.of Eu a.d Rh ions.were s.udied us.ng X-ra. photoelectron s.ectros.opy（XPs..It is.found tha. the Eu ions.a.e ma.nly in the diva.ent oxida.ion s.a.e while the Rh ions.ha.e+4 ***3powders.a.e found to be a.tiferroma.netic with a.s.cond order ma.netic tra.s.tion a. Neel tempera.ure（TN=2.9 K）.a.a.ys.s.of the ma.netic s.s.eptibility vers.s.tempera.ure da.a.in terms.of the Curie=Weis. la.:(χ=C/（T-θW）) for T>TN,yields.θW=-3.1 K a.d effective ma.ne tic moment ■,which is.clos. to the theoretica. va.ue ■.The ma.netic entropy cha.ge(-Δs.),wa. determined by em ploying the thermodyna. ic Ma.well's.*** μ0H=5 T a.d nea. TN,■ a.d rela.ive cooling power（RCP） exhibit la.ge va.ues.of 33.7 J/（kg·K） a.d 238 J/kg,*** la.ge ma.nitude of-Δs.a.d RCP s.ow tha. the EuRhO3compound could be a.potentia. ca.dida.e to be us.d in cryogenic ma.netic refrigera.ion.

关键词： Cryogenic ma.netic refrigera.ion Ma.netic properties Ma.netoca.oric effect Ra.e ea.ths X-ra. photoelectron s.ectros.opy

Efficiency of Bio-Fertilizing a. One of the Na.ura. a.terna.ives.to Improve the Growth of Kha.a.s.nega.ens.s.a.d s.ietenia.ma.a.oni Trees.a.d for s.s.a.na.ility

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a.ricultura. s.iences 2024年第2期15卷 292-310页

作者： s.0}a. a. s. Ghora. Na.hwa.H. Moha.ed Na.er a. el-s.a.horey Na.a. s. el-s.a.a. a.r R. Ra.ie Fores.ry a.d Timber Trees.Depa.tment Horticulture Research Institute Agricultural Research Center Ismailia Egypt Fores.ry a.d Timber Trees.Depa.tment Horticulture Research Institute Agricultural Research Center Alexandria Egypt Bota.ica. Ga.dens.Depa.tment Horticulture Research Institute Agricultural Research Center Alexandria Egypt Fores.ry a.d Timber Trees.Depa.tment Horticulture Research Institute Agricultural Research Center Giza Egypt

a.field experiment wa. ca.ried out a. Is.a.lia.Res.a.ch s.a.ion, Is.a.lia.Governora.e from 2020-2022 to improve the growth of Kha.a.s.nega.ens.s.a.d s.ietenia.ma.a.oni by us.ng a.combina.ion of minera. fertilizer (NPK) a.d biologica. fertilizer (a.otoba.ter chroococcum, Ba.illus.mega.herium, a.d Ba.illus.circula.t) a. recommended dos. under new s.0}dy s.ils.conditions. s.lit plot des.gned with four trea.ments.(Control, (50% Minera. fertilizer (M.) + 50% Biologica. fertilizer (Bio.)), 100% M. a.d 100% Bio.) of ea.h s.ecies. Vegeta.ive growth, lea. a.ea. tree bioma.s. s.ored ca.bon, ba.a. a.ea. tree volume, a.d in the s.il both of microbia. a.count a.d minera. content were determined. The experimenta. res.lts.s.owed no s.gnifica.t differences.between s.udied s.ecies.a.ong the mos. s.udied pa.a.eters.except for Kha.a.s.nega.ens.s.which ga.e the highes. s.gnifica.t difference in root bioma.s.a.d below-s.ored ca.bon tha. s.ietenia.ma.a.oni. Evidently, the highes. s.gnifica.t growth pa.a.eters.were 100% minera. fertilizer followed by (50% M. + 50% Bio.) a. compa.ed with control. No s.gnifica.t difference between 100% M. a.d (50% M. + 50% Bio.) of s.oot dry bioma.s.(15.19 a.d 12.02 kg, res.ectively) a.d a.ove-s.ored ca.bon (0.28 a.d 0.22 Mt, res.ectively). Microbia. a.count a.d minera. content in s.il were improved a.ter cultiva.ion of tree s.ecies.compa.ed to before pla.ting a.d control, es.ecia.ly with 50% minera. fertilizer a.d 50% bio-fertilizer trea.ment. In conclus.on, a.trea.ment conta.ning 50% minera. fertilizer a.d 50% bio-fertilizer ha. led to the idea. Kha.a.s.nega.ens.s.a.d s.ietenia.ma.a.oni growth in s.0}dy s.il for chea.er a.d s.s.a.na.le.

关键词： Kha.a.s.nega.ens.s s.ietenia.ma.a.oni Minera. Fertilizer Bio-Fertilizer Growth Pa.a.eters Tree Bioma.s s.ored Ca.bon s.s.a.na.le

La.da. qua.tiza.ion effects.on da.ping Ka.a.a.a.s.litons.in electron–pos.tron–ion pla.ma.in rota.ing ionized medium

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Communica.ions.in Theoretica. Phys.cs 2024年第10期76卷 143-152页

作者： E I el-a.a.y s.Hus.a.n N a.hta. Depa.tment of Phys.cs Faculty of Science Port Said University Theoretica. Phys.cs.Divis.on (TPD) PINSTECH

For the dyna.ics.of three-dimens.ona. electron–pos.tron–ion pla.ma., a.fluid qua.tum hydrodyna.ic model is.propos.d by cons.dering La.da. qua.tiza.ion effects.in dens. ***–neutra. collis.ons.in the pres.nce of the Coriolis.force a.e a.s. cons.dered. The a.plica.ion of the reductive perturba.ion technique produces.a.wa.e evolution equa.ion repres.nted by a.da.ped Korteweg–de Vries.equa.ion. This.equa.ion, however, is.ins.fficient for des.ribing wa.es.in our s.s.em a. very low dis.ers.on coefficients. a. a.res.lt, we cons.dered the highes.-order perturba.ion, which res.lted in the da.ped Ka.a.a.a.equa.ion. The effects.of the ma.netic field, La.da. qua.tiza.ion, the ra.io of pos.tron dens.ty to electron dens.ty, the ra.io of pos.tron dens.ty to ion dens.ty, a.d the direction cos.ne on linea. dis.ers.on la.s.a. well a. s.liton a.d conoida. s.lutions.of the da.ped Ka.a.a.a.equa.ion a.e explored. The unders.a.ding from this.res.a.ch ca. contribute to the broa.er field of a.trophys.cs.a.d a.d in the interpreta.ion of obs.rva.iona. da.a.from white dwa.fs.

关键词： Coriolis.force Ka.a.a.a.equa.ion La.da. qua.tiza.ion ma.netopla.ma. qua.tum pla.ma s.lita.y a.d cnoida. wa.es

Multiple s.a.es.method for a.a.yzing a.forced da.ped rota.iona. pendulum os.illa.orwithga.lows

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Communica.ions.in Theoretica. Phys.cs 2024年第5期76卷 58-67页

作者： Ha.fa.a.a.yous.f a.va.o H s.0}a. B M a.ota.bi s.a.el-Ta.ta.y Depa.tment of Phys.cs College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Depa.tment of Ma.hema.ics.a.d s.a.is.ics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Depa.tment of Phys.cs Faculty of SciencePort Said UniversityPort Said 42521Egypt Res.a.ch Center for Phys.cs.RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

This.s.udy reports.the a.a.ytica. s.lution for a.genera.ized rota.iona. pendulum s.s.em with ga.lows.a.d periodic excited *** multiple s.a.es.method(Ms.)is.a.plied to s.lve the propos.d *** types.of rota.iona. pendulum os.illa.ors.a.e s.udied a.d ta.ked a.out in *** include the forced da.ped rota.ing pendulum os.illa.or with ga.lows.the da.ped s.a.da.d s.mple pendulum os.illa.or,a.d the da.ped rota.ing pendulum os.illa.or without *** Ms. firs.-order a.proxima.ions.for a.l the ca.es.mentioned a.e derived in *** obta.ned res.lts.a.e illus.ra.ed with concrete numerica. *** firs.-order Ms. a.proxima.ions.a.e compa.ed to the fourth-order Runge-Kutta.RK4)numerica. ***,the ma.imum error is.es.ima.ed for the firs.-order a.proxima.ions.obta.ned through the Ms.,compa.ed to the numerica. a.proxima.ions.obta.ned by the RK4 ***,we conducted a.compa.a.ive a.a.ys.s.of the outcomes.obta.ned by the us.d method(Ms.)a.d He-Ms. to a.certa.n their res.ective levels.of *** propos.d method ca. be a.plied to a.a.yze ma.y s.rong nonlinea. os.illa.ory equa.ions.

关键词： rota.iona. pendulum s.s.em multiple s.a.es.method a.proxima.e s.lution da.ped os.illa.ions forced pendulum with ga.lows he-multiple s.a.es.method

On the a.a.ytica. s.liton a.proxima.ions.to fra.tiona. forced Korteweg-de Vries.equa.ion a.is.ng in fluids.a.d pla.ma. us.ng two novel techniques

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Communica.ions.in Theoretica. Phys.cs 2024年第8期76卷 1-10页

作者： Wea.m a.heja.li Ema. a.a.-Zo’bi Ra.ool s.a. s.a.el-Ta.ta.y Depa.tment of Ma.hema.ica. s.iences College of SciencePrincess Nourah bint Abdulrahman UniversityPO Box 84428Riyadh 11671Saudi Arabia Depa.tment Ma.hema.ics.a.d s.a.is.ics Mutah UniversityAl-KarakJordan Depa.tment of Computer s.ience a.d Ma.hema.ics Lebanese American UniversityBeirutLebanon Depa.tment of Phys.cs Faculty of SciencePort Said UniversityPort Said 42521Egypt Depa.tment of Phys.cs Faculty of ScienceAl-Baha UniversityAl-Baha P.O.Box 1988Saudi Arabia

The current inves.iga.ion exa.ines.the fra.tiona. forced Korteweg-de Vries.FF-KdV) equa.ion,a.critica.ly s.gnifica.t evolution equa.ion in va.ious.nonlinea. bra.ches.of s.ience. The equa.ion in ques.ion a.d other a.s.cia.ed equa.ions.a.e widely a.knowledged for their broa. a.plica.ility a.d potentia. for s.mula.ing a.wide ra.ge of nonlinea. phenomena.in fluid phys.cs. pla.ma.phys.cs. a.d va.ious.s.ientific doma.ns. Cons.quently, the ma.n goa. of this.s.udy is.to us. the Ya.g homotopy perturba.ion method a.d the Ya.g tra.s.orm decompos.tion method, a.ong with the Ca.uto opera.or for a.a.yzing the FF-KdV equa.ion. The derived a.proxima.ions.a.e numerica.ly exa.ined a.d dis.us.ed. Our s.udy will s.ow tha. the two s.gges.ed methods.a.e helpful, ea.y to us., a.d es.entia. for looking a. different nonlinea. models.tha. a.fect complex proces.es.

关键词： forced fra.tiona. KdV equa.ion Ca.uto opera.or Ya.g homotopy perturba.ion method Ya.g tra.s.orm decompos.tion method s.litons

Impa.t of dema.d growth on the ca.a.ity of long-dura.ion energy s.ora.e under deep deca.boniza.ion

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Clea. Energy 2024年第4期8卷 237-247页

作者： s.0}a.a.hfa. Ilya.s.el Mya.s. Da.ing Zha.g a.med s.Mus.eh Ca.negie Ins.itution Stanford UniversityStanfordCAUSA electric Power Res.a.ch Ins.itute(EPRI) Palo AltoCAUSA EEIs.La.ora.ory ENSET MohammediaHassan II UniversityCasablancaMorocco s.hool of electrica. Engineering a.d Telecommunica.ions University of New South WalesSydneyAustralia

The wea.her-dependent uncerta.nty of wind a.d s.la. power genera.ion pres.nts.a.cha.lenge to the ba.a.cing of power genera.ion a.d dema.d in highly renewa.le electricity *** energy s.ora.e ca. provide flexibility to firm up the va.ia.ility of renewa.les.a.d to res.ond to the increa.ed loa. dema.d under deca.boniza.ion *** pa.er explores.how the ba.tery energy s.ora.e ca.a.ity requirement for compres.ed-a.r energy s.ora.e(Ca.s.will grow a. the loa. dema.d *** we us.d a. idea.ized lowes.-cos. optimiza.ion model to s.udy the res.ons. of highly renewa.le electricity s.s.ems.to the increa.ing loa. dema.d of Ca.ifornia.under deep *** s.ow tha. providing bulk Ca.s.to the zero-emis.ion power s.s.em offers.s.bs.a.tia. benefits.but it ca.not fully compens.0}e for the 100%va.ia.ility of highly renewa.le power *** ca.a.ity requirement of Ca.s.increa.es.by≤33.3%with a.1.5 times.increa.e in the loa. dema.d a.d by≤50%with a.two-times.increa.e in the loa. *** this.a.a.ys.s.a.zero-emis.ion electricity s.s.em opera.ing a. current cos.s.becomes.more cos.-effective when there is.firm power *** lea.t competitive nuclea. option pla.s.this.role a.d reduces.s.s.em cos.s.by 16.4%,curta.ls.the a.nua. ma.n node by 36.8%,a.d decrea.es.the Ca.s.ca.a.ity requirements.by≤80.7%in the ca.e of a.double-loa. *** Ca.s.ha. potentia. in a.dres.ing renewa.le va.ia.ility,its.wides.rea. deployment is.cons.ra.ned by geogra.hica.,s.cieta.,a.d economic fa.***,if Ca.ifornia.is.a.ming for a. energy s.s.em tha. is.relia.t on wind a.d s.la. power,then a. a.ditiona. dis.a.cha.le power s.urce other tha. Ca.s.or s.mila. loa. flexibility is.*** fully ha.nes. the benefits.of bulk Ca.s.the development a.d implementa.ion of cos.-effective a.proa.hes.a.e crucia. in s.gnifica.tly reducing s.s.em cos.s.

关键词： compres.ed-a.r energy s.ora.e deep deca.boniza.ion ma.ro-energy modelling loa. growth renewa.le energy

a.va.cements.s.ra.egies.a.d pros.ects.of s.lid oxide electrolys.s.cells.s.ECs.:Towa.ds.enha.ced performa.ce a.d la.ge-s.a.e s.s.a.na.le hydrogen production

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Journa. of Energy Chemis.ry 2024年第7期94卷 688-715页

作者： a.ina.La.richi Younes. el Is.ma.li s.a.ka.a.s.Ka.a.ur Bruno G.Pollet Green Hydrogen La.(GH2La.) Hydrogen Research Institute(HRI)Universitédu QuébecàTrois-Rivières(UQTR)3351 boulevard des ForgesTrois-RivièresQuébec G9A 5H7Canada

s.lid oxide electrolys.s.cells.s.ECs.repres.nt a.crucia. s.ride towa.d s.s.a.na.le hydrogen genera.ion,a.d this.review explores.their current s.ientific cha.lenges.s.gnifica.t a.va.cements.a.d potentia. for la.ge-s.a.e hydrogen *** s.EC technology,the a.plica.ion of innova.ive fa.rica.ion tech-niques.doping s.ra.egies.a.d a.va.ced ma.eria.s.ha. enha.ced the performa.ce a.d dura.ility of thes. s.s.ems.a.though degra.a.ion cha.lenges.pers.s.,implica.ing the prime focus.for future *** we provide in-depth a.a.ys.s.of the recent developments.in s.EC technology,including Oxygen-s.ECs.Proton-s.ECs.a.d ***,Hybrid-s.ECs.with their mixed ionic conducting electrolytes.demons.ra.e s.perior efficiency a.d the concurrent production of hydrogen a.d *** with the ca.a.ity to ha.nes. wa.te hea.,thes. a.va.cements.in s.EC technology pres.nt s.gnif-ica.t promis. for pilot-s.a.e a.plica.ions.in *** review a.s. highlights.rema.ka.le a.hieve-ments.a.d potentia. reductions.in ca.ita. expenditure for future s.EC s.s.ems.while ela.ora.ing on the micro a.d ma.ro a.pects.of s.ECs.with a. empha.is.on ongoing res.a.ch for optimiza.ion a.d *** concludes.with the potentia. of s.EC technology to meet va.ious.indus.ria. energy needs.a.d its.s.gnifica.t contribution cons.dering the key res.a.ch priorities.to ta.kle the globa. energy dema.ds.ful-fillment,a.d deca.boniza.ion efforts.

关键词： s.lid oxide electrolys.s.cells Proton-s.ECs Oxygen-s.ECs Hybrid-s.ECs Intermedia.e-high tempera.ure electrolys.rs Hydrogenproduction