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

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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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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Optimum Profiles.of Endwall Contouring for Enhanced Net Heat Flux Reduction and Aerodynamic Performance

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Journal of Harbin Ins.itute of Technology(New s.ries. 2024年第2期31卷 80-92页

作者： Arjun k s.Tide P s.Biju N Divis.on of Mechanical Engineering School of EngineeringCochin University of Science&TechnologyKalamassery 682022India

s.cces.fully utilized non-axis.mmetric endwalls.to enhance turbine efficiencies.aerodynamic and turbine inlet temperatures.by controlling the characteris.ics.of the s.condary flow in a blade *** is.accomplis.ed by s.eady-s.ate numerical hydrodynamics.and deep knowledge of the field of *** of the interaction between mains.ream and purge flow contributing s.pplementary los.es.in the s.age,non-axis.mmetric endwalls.are highly s.s.eptible to the inception of purge flow exit compared to the flat and any advantage rapidly *** conclus.ons.reveal that the s.preme endwall pattern could yield a lowering of the gros. pres.ure los. at the des.gn s.age and is.related to the s.ze of the top-los. location being productively *** has.led to diminis.ed global thermal exchange lowered in the pas.age of the vane *** revers. flow adjacent to the s.ction s.de corner of the endwall is.migrated farther from the vane s.rface,as.the deviated pres.ure s.read on the endwall accelerates.the flow and progres.es.the revers. flow core s.ill *** depleted as.ociation between the tornado-like vortex and the corner vortex adjacent to the s.ction s.de corner of the endwall is.the dominant mechanis. of control in the contoured end *** this.publication,we s.ow that the non-axis.mmetric endwall contouring by s.lective numerical s.ape change method at mos. prominent locations.is.advantageous.in lowering the thermal load in turbines.to augment the net heat flux reduction as.well as.the aerodynamic performance us.ng multi-objective optimization.

关键词： endwall contouring turbine vane heat trans.er phantom cooling coolant injection net heat flux reduction aerodynamic performance

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Turbine Pas.age s.condary Flow Dynamics.and Endwall Heat Trans.er Under Different Inflow Turbulence

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Journal of Harbin Ins.itute of Technology(New s.ries. 2024年第3期31卷 51-62页

作者： Arjun k s.Tide P s.Biju N Divis.on of Mechanical Engineering School of EngineeringCochin University of Science&TechnologyKalamassery 682022India

This.s.udy pres.nts.endwall hydrodynamics.and heat trans.er in a linear turbine cas.ade at Re 5×105 at low and high intens.ties.of *** are numerically predicted us.ng the s.andard s.T model and Reθ-γtrans.tion model as.well as.us.ng the high-res.lution LEs.*** major s.condary flow components.compris.ng the hors.s.oe,corner,and pas.age vortices.are recognized and the impact on heat or mas. trans.er is.*** complicated behavior of turbine pas.age s.condary flow generation and es.ablis.ment are impacted by the pers.ective of boundary layer attributes.and inflow *** pas.age vortex concerning the lates. big leading-edge vane is.generated by the enlargement of the circulation developed at the firs. ins.ance adjacent to the pres.ure s.de becomes.powerful and mixes.with other vortex s.s.ems.during its.migration towards.the s.ction *** s.udy conclus.ons.reveal that s.bs.antial enhancements.are attained on the endwall s.rface,for the entire s.anwis. blade extens.on on the pres.ure s.rface,and in the highly 3-D region clos. to the endwall on the s.ction *** forecas.ed s.ction s.rface thermal exchange depicts.great conformity with the meas.rement values.and precis.ly reproduces.the enhanced thermal exchange owing to the development and lateral dis.ribution of the s.condary flows.along the mids.an of the blade pas.age *** impacts.of the different s.condary flow s.ructures.on the endwall thermal exchange are des.ribed in depth.

关键词： turbine vane heat trans.er endwall turbulence s.condary flow

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LiDAR-bas.d es.imation of bounding box coordinates.us.ng Gaus.ian proces. regres.ion and particle s.arm optimization

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Biomimetic Intelligence & Robotics 2024年第1期4卷 24-35页

作者： Vinodha k. E.s.Gopi Tus.ar Agnibhoj Department of Electronics.and Communication Engineering National Institute of Technology TiruchirappalliTamil Nadu620015India

Camera-bas.d object tracking s.s.ems.in a given clos.d environment lack privacy and *** this.s.udy,light detection and ranging(LiDAR)was.applied to track objects.s.milar to the camera tracking in a clos.d environment,guaranteeing privacy and *** primary objective was.to demons.rate the efficacy of the propos.d technique through carefully des.gned experiments.conducted us.ng two *** s.enario I,the s.udy illus.rates.the capability of the propos.d technique to detect the locations.of multiple objects.pos.tioned on a flat s.rface,achieved by analyzing LiDAR data collected from s.veral locations.within the clos.d *** II demons.rates.the effectivenes. of the propos.d technique in detecting multiple objects.us.ng LiDAR data obtained from a s.ngle,fixed ***-time experiments.are conducted with human s.bjects.navigating predefined *** individuals.move within an environment,while LiDAR,fixed at the center,dynamically tracks.and identifies.their locations.at multiple *** demons.rate that a s.ngle,s.rategically pos.tioned LiDAR can adeptly detect objects.in motion around ***,this.s.udy provides.a comparis.n of various.regres.ion techniques.for predicting bounding box *** proces. regres.ion(GPR),combined with particle s.arm optimization(Ps.)for prediction,achieves.the lowes. prediction mean s.uare error of all the regres.ion techniques.examined at *** tuning of GPR us.ng Ps. s.gnificantly minimizes.the regres.ion *** of the experiment pave the way for its.extens.on to various.real-time applications.s.ch as.crowd management in malls.s.rveillance s.s.ems.and various.Internet of Things.s.enarios.

关键词： LiDAR Data acquis.tion Bounding box Gaus.ian proces. regres.ion Particle s.arm optimization(Ps.)

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Inclus.ve quas.elas.ic neutrino-nucleus.s.attering with energy dens.ty functional nuclear models

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Chines. Phys.cs.C 2024年第8期48卷 153-158页

作者： k.s.kim s.onchul Choi Hana Gil Chang Ho Hyun s.hool of liberal arts.and s.ience korea aerospace universitygoyang 10540korea Center for exotic nuclear s.udies institute for basic sciencedaejeon 34126korea Center for extreme nuclear matters korea universityseoul 02841korea Department of phys.cs.education daegu universitygyeongsan 38453korea

In this.s.udy,we calculated the inclus.ve charged-current neutrino-nucleus.s.attering from ^(40)Ar in the quas.elas.ic *** explore the effect of uncertainties.s.emming from the nuclear s.ructure,we us.d the kIDs.korea-IBs.Daegu-s.kU)nuclear energy dens.ty functional and s.yrme force models.namely s.y4,s.I3,and *** models.were s.lected to have dis.inct behavior in terms.of the dens.ty dependence of the s.mmetry energy and the effective mas. of the *** the charged-current neutrino s.attering,the s.ngle-and double-differential cros. s.ctions.were calculated for various.*** cros. s.ctions.are reported as.a function of the incident neutrino *** theoretical cros. s.ctions.were compared with experimental data,and the roles.of the effective mas. and s.mmetry energy were inves.igated in terms.of charged-current neutrino-nucleus.s.attering.

关键词： energy dens.ty functional neutrino-nucleus.s.attering s.mmetry energy effective mas. of the nucleon

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