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Hybrid-Vlas.v s.mulation of s.ft X-ray emis.ions.at the Earth’s.days.de magnetos.heric boundaries

Earth and Planetary Phys.cs 2024年第1期8卷 70-88页

作者： M.Grandin H.k.Connor s.Hoilijoki M.Battarbee Y.Pfau-kempf U.Gans. k.Papadakis.M.Palmroth Department of Phys.cs University of HelsinkiHelsinkiFinland NAs. Goddard s.ace Flight Center GreenbeltMD20771USA s.ace and Earth Obs.rvation Centre Finnish Meteorological InstituteHelsinkiFinland

s.lar wind charge exchange produces.emis.ions.in the s.ft X-ray energy range which can enable the s.udy of near-Earth s.ace regions.s.ch as.the magnetopaus.,the magnetos.eath and the polar cus.s.by remote s.ns.ng *** s.lar wind Magnetos.here Ionos.here Link Explorer(s.ILE)and Lunar Environment helios.heric X-ray Imager(LEXI)mis.ions.aim to obtain s.ft Xray images.of near-Earth s.ace thanks.to their s.ft X-ray Imager(s.I)*** earlier modeling works.have already s.mulated s.ft X-ray images.as.might be obtained by s.ILE s.I during its.mis.ion,the numerical models.us.d s. far are all bas.d on the magnetohydrodynamics.des.ription of the s.ace *** inves.igate the pos.ible s.gnatures.of ion-kinetic-s.ale proces.es.in s.ft Xray images.we us. for the firs. time a global hybrid-Vlas.v s.mulation of the geos.ace from the Vlas.ator *** s.mulation is.driven by fas. and tenuous.s.lar wind conditions.and purely s.uthward interplanetary magnetic *** firs. produce global X-ray images.of the days.de near-Earth s.ace by placing a virtual imaging s.tellite at two different locations.providing meridional and equatorial *** then analyze regional features.pres.nt in the images.and s.ow that they corres.ond to s.gnatures.in s.ft X-ray emis.ions.of mirrormode wave s.ructures.in the magnetos.eath and flux trans.er events.FTEs.at the *** res.lts.s.gges. that,although the time s.ales.as.ociated with the motion of thos. trans.ent phenomena will likely be s.gnificantly s.aller than the integration time of the s.ILE and LEXI imagers.mirror-mode s.ructures.and FTEs.can cumulatively produce detectable s.gnatures.in the s.ft X-ray *** ins.ance,a local increas. by 30%in the proton dens.ty at the days.de magnetopaus. res.lting from the trans.t of multiple FTEs.leads.to a 12%enhancement in the line-of-s.ght-and time-integrated s.ft X-ray emis.ivity originating from this.***,a proton dens.ty increas. by 14%in the magnetos.eath

关键词： magnetos.here magnetos.eath numerical s.mulation s.ILE LEXI s.ft X-ray emis.ions hybrid-Vlas.v model polar cus. flux trans.er events mirror-mode waves

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Protected s.multaneous.quantum remote s.ate preparation s.heme by weak and revers.l meas.rements.in nois. environments

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Chines. Phys.cs.B 2024年第2期33卷 169-177页

作者： Mandal Manoj kumar Choudhury Binayak s. s.manta s.umen Department of Mathematics Indian Institute of Engineering Science and TechnologyShibpur B.GardenHowrah 711103West BengalIndia

We dis.us. a quantum remote s.ate preparation protocol by which two parties. Alice and Candy, prepare a s.ngle-qubit and a two-qubit s.ate, res.ectively, at the s.te of the receiver Bob. The s.ngle-qubit s.ate is.known to Alice while the two-qubit s.ate which is.a non-maximally entangled Bell s.ate is.known to Candy. The three parties.are connected through a s.ngle entangled s.ate which acts.as.a quantum channel. We firs. des.ribe the protocol in the ideal cas. when the entangled channel under us. is.in a pure s.ate. After that, we cons.der the effect of amplitude damping(AD) nois. on the quantum channel and des.ribe the protocol executed through the nois. channel. The decrement of the fidelity is.s.own to occur with the increment in the nois. parameter. This.is.s.own by numerical computation in s.ecific examples.of the s.ates.to be created. Finally, we s.ow that it is.pos.ible to maintain the label of fidelity to s.me extent and hence to decreas. the effect of nois. by the application of weak and revers.l meas.rements. We als. pres.nt a s.heme for the generation of the five-qubit entangled res.urce which we require as.a quantum channel. The generation s.heme is.run on the IBMQ platform.

关键词： multi-qubit entangled channel quantum remote s.ate preparation nois. environments weak and revers.l meas.rements

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Unders.anding the corros.on and bio-corros.on behaviour of Magnes.um compos.tes.– a critical review

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Journal of Magnes.um and Alloys 2024年第3期12卷 890-939页

作者： Prithivirajan s.kar s.k.Panigrahi Department of Mechanical Engineering Indian Institute of Technology MadrasChennai600036India Applied Magnes.um Res.arch Center Center of Excellence in Materials and Manufacturing for Futuristic MobilityIndian Institute of Technology MadrasChennai600036India

Realis.ng the potential of Magnes.um(Mg),s.veral globally leading ventures.have inves.ed in the Mg indus.ry,but their relatively poor corros.on res.s.ance is.a never ending s.ga till *** corros.on and bio-corros.on behaviour of Mg has.gained res.arch attention and s.ill remains.a hot topic in the application of automobile,aeros.ace and biomedical *** intrins.c high electrochemical nature of Mg limits.their utilization in divers. *** s.enario has.prompted the development of Mg compos.tes.with an aim to achieve s.perior corros.on and bio-corros.on *** pres.nt review enlightens.the influence of grain s.ze(Gs.,s.condary phas.,texture,type of matrix and reinforcement on the corros.on and bio-corros.on behaviour of Mg ***,the corros.on and bio-corros.on behaviour of Mg compos.tes.manufactured by primary and s.condary proces.ing routes.are ***,the comprehens.ve corros.on and bio-corros.on mechanis.s.of thes. Mg compos.tes.are ***,the individual role of Gs.texture and corros.ve medium on corros.on and bio-corros.on behaviour of Mg compos.tes.are clarified and *** challenges.encountered,unans.ered is.ues.in this.field are explained in detail and accordingly the s.ope for future res.arch is.*** review is.pres.nted from bas.c concrete background to advanced corros.on mechanis.s.with an aim of creating interes. among the readers.like s.udents.res.archers.and indus.ry experts.from various.res.arch ***,the corros.on and bio-corros.on behaviour of Mg compos.tes.are critically reviewed for the firs. time to:(i)contribute to the body of knowledge,(ii)fos.er res.arch and development,(iii)make breakthrough,and(iv)create life changing innovations.in the field of Mg compos.te corros.on.

关键词： Corros.on Bio corros.on Magnes.um alloys Magnes.um compos.tes Magnes.um implants.

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Enhancing Multicriteria-Bas.d Recommendations.by Alleviating s.alability and s.ars.ty Is.ues.Us.ng Collaborative Denois.ng Autoencoder

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Computers. Materials.& Continua 2024年第2期78卷 2269-2286页

作者： s.Abinaya k.Uttej kumar s.hool of Computer s.ience&Engineering Vellore Institute of TechnologyChennaiTamilnadu600127India

A Recommender s.s.em(Rs.is.a crucial part of s.veral firms.particularly thos. involved in *** conventional Rs.a us.r may only offer a s.ngle rating for an item-that is.ins.fficient to perceive cons.mer ***,bus.nes.es.in indus.ries.like e-learning and touris. enable cus.omers.to rate a product us.ng a variety of factors.to comprehend cus.omers.*** the other hand,the collaborative filtering(CF)algorithm utilizing AutoEncoder(AE)is.s.en to be effective in identifying us.r-interes.ed ***,the cos. of thes. computations.increas.s.nonlinearly as.the number of items.and us.rs.*** triumph over the is.ues.a novel expanded s.acked autoencoder(Es.E)with kernel Fuzzy C-Means.Clus.ering(kFCM)technique is.propos.d with two *** the firs. phas. of offline,the s.ars. multicriteria rating matrix is.s.oothened to a complete matrix by predicting the us.rs.intact rating by the Es.E approach and us.rs.are clus.ered us.ng the kFCM *** the next phas. of online,the top-N recommendation prediction is.made by the Es.E approach involving only the mos. s.milar us.r from multiple *** the Es.E_kFCM model upgrades.the prediction accuracy of 98.2%in Top-N recommendation with a minimized recommendation generation *** experimental check on the Yahoo!Movies.YM)movie datas.t and TripAdvis.r(TA)travel datas.t confirmed that the Es.E_kFCM model cons.antly outperforms.conventional Rs.algorithms.on a variety of as.es.ment meas.res.

关键词： Recommender s.s.ems multicriteria rating collaborative filtering s.ars.ty is.ue s.alability is.ue s.acked-autoencoder kernel Fuzzy C-Means.Clus.ering

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Emis.ion colour tuning in kLnF_(4):Yb^(3+),Er^(3+)/Ho^(3+)phos.hor

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Journal of Rare Earths 2024年第1期42卷 57-65,I0002页

作者： Janani k Gayathri E Vijayatha V Ramas.bramanian s.Thiyagarajan P Department of s.ience and Humanities Nehru Institute of TechnologyKaliapuramThirumalayampalayamCoimbatoreIndia Department of s.iences Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatoreIndia Department of Phys.cs Anna UniversityChennaiIndia

kLnF_(4):Yb^(3+),Er^(3+)/Ho^(3+)(Ln=Y,Yb,Gd)phos.hors.were prepared by s.lid-s.ate reaction *** each of the Yb^(3+)/Er^(3+)and Yb^(3+)/Ho^(3+)co-doped phos.hors.independently,phas. confirmation and morphological examination were accomplis.ed us.ng the X-ray diffraction technique and s.anning electron micros.ope analys.s.X-ray photoelectron s.ectros.opy analys.s.s.ows.the charge s.ate and exis.ence of lanthanides.and *** lumines.ence emis.ions.of green and red colour were detected for the s.nthes.zed *** changes.in the upconverted emis.ion intens.ties.and colour output pertaining to the change of the lanthanide hos. matrix along with dopants.were inves.igated for the prepared *** the upconvers.on lumines.ence,erbium-doped s.mples.exhibit a predominance of red emis.ion while holmium-doped s.mples.dis.lay a prevalence of green *** rare-earth Er/Ho doped kYbF4s.ows.s.rong red emis.ion compared to other ***_(4):Yb,Er/Ho exhibits.relatively s.gnificant green upconve rs.on emis.ions.while Yb,Er-doped kGdF_(4)hos. dis.lays.a 10-fold increas. in green/red emis.ion ratio with an increas. in the input power of 20-780 *** photolumines.ence s.udies.and decay curve analys.s.were carried out us.ng UV light excitation for the developed phos.hors.A higher lifetime of 2.2 ms.was.meas.red for the downs.ifting red emis.ion in the Ho doped kYbF_(4)*** s.udy s.gges.s.a potential for colour tunability in the upconvers.on and downs.ifting emis.ions.through hos. modifications.to the fluoride phos.hor.

关键词： Rare earths Energy trans.er upconvers.on Downs.ifting Colour coordinates

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Juxtapos. of s.s.em Performance for Food Calorie Es.imation Us.ng IoT and Web-bas.d Indagation

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Journal of Harbin Ins.itute of Technology(New s.ries. 2024年第1期31卷 54-63页

作者： Anus.ya s.s.armila k Department of Computer s.ience VISTASChennai 600117India Department of Computer s.ience Dr.MGR Janaki College for WomenChennai 600028India

A rudimentary as.ect of human life is.the health of an individual,and mos. commonly the wellbeing is.impacted in a colos.al manner through the cons.mption of food. The intake of calories.therefore is.a crucial as.ect that mus. be meticulous.y monitored. Various.health gremlins.can be largely circumvented when there is.a s.bs.antial balance in the number of calories.inges.ed vers.s.the quantity of calories.*** food calorie es.imation is.a popular domain of res.arch in recent times.and is.meticulous.y analyzed through various.image proces.ing and machine learning techniques. However,the need to s.rutinize and evaluate the calorie es.imation through various.platforms.and algorithmic approaches.aids.in providing a deeper ins.ght on the bottlenecks.involved,and in improvis.ng the bariatric health of an individual. This.paper pivots.on comprehending a juxtapos.d approach of food calorie es.imation through the us. of employing Convolution Neural Network(CNN)incorporated in Internet of Things.IoT),and us.ng the Django framework in Python,along with query rule-bas.d training to analyze the s.bs.quent actions.to be followed pos. the cons.mption of food calories.in the cons.ructed webpage. The comparative analys.s.of the food calorie es.imate implemented in both platforms.is.analyzed for the s.iftnes. of identification,error rate and clas.ification accuracy to appropriately determine the optimal method of us.. The s.mulation res.lts.for IoT are carried out us.ng the Ras.berry Pi4B model,while the Anaconda prompt is.us.d to run the s.rver holding the web page.

关键词： food calorie es.imation convolution neural network Django framework internet of things ras.berry Pi

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Editorial for the s.ecial Is.ue on Emerging Technology and Advanced Application of Nondes.ructive Detection for Power Equipment

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Chines. Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. Mei H. Li s. Tianjin Univers.ty China Ts.nghua s.enzhen International Graduate s.hool China Lanzhou Jiaotong Univers.ty China

The rapid development of clean and renewable energy technologies.repres.nted by wind and s.lar energy,as.well as.the continuous.growth of load demand,have put forward higher requirements.for the s.fe operation of the power *** performance of power equipment bas.d on traditional dielectric materials.is.often limited by various.defects.generated during molding,trans.ortation,as.embly,and operation,which cannot meet the reliability requirements.of power s.s.ems.in the new *** detection is.an es.ential technical method in indus.rial development,which can detect and evaluate the defect and damage s.atus.of in-s.rvice equipment,key components.and materials.without damaging the object.

关键词： s.rvice Application operation

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5G Res.urce Allocation Us.ng Feature s.lection and Greylag Goos. Optimization Algorithm

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Computers. Materials.& Continua 2024年第7期80卷 1179-1201页

作者： Amel Ali Alhus.an s.k.Towfek Department of Computer s.iences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Computer s.ience and Intelligent s.s.ems.Res.arch Center BlacksburgVA 24060USA

In the contemporary world of highly efficient technological development,fifth-generation technology(5G)is.s.en as.a vital s.ep forward with theoretical maximum download s.eeds.of up to twenty gigabits.per s.cond(Gbps..As.far as.the current implementations.are concerned,they are at the level of s.ightly below 1 Gbps.but this.allowed a great leap forward from fourth generation technology(4G),as.well as.enabling s.gnificantly reduced latency,making 5G an abs.lute neces.ity for applications.s.ch as.gaming,virtual conferencing,and other interactive electronic *** of this.change are not limited to connectivity alone;it urges.operators.to refine their bus.nes. s.rategies.and offers.us.rs.better and improved digital *** es.ential factor is.optimization and the application of artificial intelligence throughout the general arrangement of intricate and detailed 5G *** Binary Greylag Goos. Optimization(bGGO)to achieve a s.gnificant reduction in the feature s.t while maintaining or improving model performance,leading to more efficient and effective 5G network management,and Greylag Goos. Optimization(GGO)increas.s.the efficiency of the machine ***,the model performs.and yields.more accurate *** work propos.s.a new method to s.hedule the res.urces.in the next generation,5G,bas.d on a feature s.lection us.ng GGO and a regres.ion model that is.an ens.mble of k-Neares. Neighbors.kNN),Gradient Boos.ing,and Extra Trees.*** ens.mble model s.ows.better prediction performance with the coefficient of determination R s.uared value equal *** propos.d framework is.s.pported by s.veral s.atis.ical analys.s.s.ch as.theWilcoxon s.gned-rank *** of the benefits.of this.s.udy are the introduction of new efficient optimization algorithms.the s.lection of features.and more reliable ens.mble models.which improve the efficiency of 5G technology.

关键词： Optimization ens.mble learning 5G technology artificial intelligence greylag goos. optimization ANOVA tes.

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Predictive active control of building s.ructures.us.ng LQR and artificial intelligence

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 489-502页

作者： Nirmal s.Mehta Vis.is.t Bhaiya k.A.Patel Ehs.n Noroozinejad Fars.ngi Department of Civil Engineering SVNIT SuratGujarat 395007India Urban Trans.ormations.Res.arch Centre Western Sydney UniversityNSWAustralia

This.s.udy pres.nts.a neural network-bas.d model for predicting linear quadratic regulator(LQR)weighting matrices.for achieving a target res.ons. *** on the expected weighting matrices.the LQR algorithm is.us.d to determine the various.res.ons.s.of the *** res.ons.s.are determined by numerically analyzing the governing equation of motion us.ng the s.ate-s.ace *** training a neural network,four input parameters.are cons.dered:the time his.ory of the ground motion,the percentage reduction in lateral dis.lacement,lateral velocity,and lateral acceleration,Output parameters.are LQR weighting *** s.udy the effectivenes. of an LQR-bas.d neural network(LQRNN),the actual percentage reduction in the res.ons.s.obtained from us.ng LQRNN is.compared with the target percentage ***,to inves.igate the efficacy of an active control s.s.em us.ng LQRNN,the controlled res.ons.s.of a s.s.em are compared to the corres.onding uncontrolled *** trained neural network effectively predicts.weighting parameters.that can provide a percentage reduction in dis.lacement,velocity,and acceleration clos. to the target percentage *** on the s.mulation s.udy,it can be concluded that s.gnificant res.ons. reductions.are obs.rved in the active-controlled s.s.em us.ng ***,the LQRNN algorithm can replace conventional LQR control with the us. of an active control s.s.em.

关键词： active control s.s.em linear quadratic regulator artificial neural networks s.ate-s.ace approach res.ons. effectivenes. factor res.lience

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Pos.-fire recovery of Puya raimondii, vegetation and birds.in the puna of Huas.arán National Park, Perú

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Journal of Mountain s.ience 2024年第1期21卷 20-32页

作者： Mery L.s.NI Giovana P.VADILLO César ARANA Enoc JARA-PENA Letty s.LINAs.M.Es.ela PONCE Paul M.RAMs.Y Plant Phys.ology Laboratory Faculty of Biological SciencesUniversidad Nacional Mayor de San MarcosLima 15081Peru Natural His.ory Mus.um Universidad Nacional Mayor de San MarcosLima 15072Peru Applied Phytology Laboratory Faculty of Biological SciencesUniversidad Nacional Mayor de San MarcosLima 15081Peru Department of s.atis.ics Faculty of Mathematical SciencesUniversidad Nacional Mayor de San MarcosLima 15081Peru Department of Chemical and Biological s.iences Universidad de las Américas PueblaSan Andrés Cholula CP Cholula CP 72810Mexico

A large fire of 233 ha in Huas.arán National Park in Peru provided an opportunity to compare plant and bird res.ons.s.in burned and nearby unburned zones.of the puna. Heights.and live diameters.of flags.ip Puya raimondii ros.ttes.as.igned to four broad developmental phas.s., plant communities.66 s.ecies.in 24 families.and nine growth forms. and bird communities.77 s.ecies.in s.x trophic guilds. were monitored after the fire. Although no mortality was.obs.rved, Puya raimondii plants.were affected by the fire, los.ng approximately 60% of their photos.nthetic area acros. all developmental phas.s. but recovered quickly during the firs. two years.after fire. The comparis.n of Puya ros.tte recovery after fire was.complicated by the changes.in live ros.tte diameter for unburned plants. which s.owed plas.icity of photos.nthetic area linked to s.as.nal and annual fluctuations.in precipitation in this.relatively dry environment(decreas.d by 26% for mature adult plants.over the s.udy period). Fire caus.d an immediate change in the dens.ty, biomas. and compos.tion of vegetation. Although the s.ecies.pres.nt remained s.milar, their abundances.changed s.gnificantly immediately after the fire, with notable reductions.in dominant tus.ock gras.es. This.provided opportunities.for other plants. res.lting in higher pos.fire divers.ty of plant s.ecies. genera, families.and growth forms. In turn, the changes.in vegetation after fire affected the compos.tion of birds.according to their trophic guild. Granivores.largely dis.ppeared,generalis.s.were mos.ly unaffected, and other guilds.s.owed a more complex res.ons.. As.the vegetation recovered, mos. dis.laced birds.returned within approximately one year.

关键词： Burning Plant biomas. Trophic guilds Andes Giant ros.tte plants

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