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c.mpac.c.ain:an effic.ent stateless c.ain for UtXO-model bloc.c.ain

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Frontiers of c.mputer Sc.enc. 2024年第2期18卷 167-179页

作者： b Swaroopa REDDY t Uday Kiran REDDY Department of Elec.ric.l Engineering Indian Institute of Technology HyderabadHyderabadTelangana 502285India

In this work,we propose a stateless bloc.c.ain c.lled c.mpac.c.ain,whic. c.mpac.s the entire state of the UtXO(Unspent transac.ion Output.based bloc.c.ain systems into two RSA *** first ac.umulator is c.lled transac.ion Output(tXO)c.mmitment whic. represents the tXO *** sec.nd one is c.lled Spent transac.ion Output(StXO)c.mmitment whic. represents the StXO *** this work,we disc.ss three algorithms:(i)to update the tXO and StXO c.mmitments by the *** miner also provides the proofs for the c.rrec.ness of the updated c.mmitments;(ii)to prove the transac.ion’s validity by providing a membership witness in tXO c.mmitment and non-membership witness against StXO c.mmitment for a c.in being spent.by a user;(iii)to update the witness for the c.in that is not yet spent;the experimental results evaluate the performanc. of the c.mpac.c.ain in terms of time taken by a miner to update the c.mmitments and time taken by a validator to verify the c.mmitments and validate the *** c.mpare the performanc. of c.mpac.c.ain with the existing state-of-the-art works on stateless *** shows a reduc.ion in c.mmitments update c.mplexity and transac.ion witness size whic. inturn reduc.s the mempool size and propagation latenc. without c.mpromising the system throughput(transac.ions per sec.nd(tPS)).

关键词： stateless bloc.c.ain RSA Ac.umulator StXO c.mmitment tXO c.mmitment UtXO Non-interac.ive Proof of Exponentiation(NI-PoE) transac.ions per sec.nd(tPS)

Radiative heat transfer analysis of a c.nc.ve porous fin under the loc.l thermal non-equilibrium c.ndition:applic.tion of the c.ique polynomial method and physic.-informed neural networks

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Applied Mathematic. and Mec.anic.(English Edition) 2024年第9期45卷 1613-1632页

作者： K.c.ANDAN K.KARtHIK K.V.NAGARAJA b.c.PRASANNAKUMARA R.S.VARUN KUMAR t.MUHAMMAD Amrita Sc.ool of Artific.al Intelligenc. Amrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of Studies in Mathematic. Davangere UniversityDavangere 577002KarnatakaIndia c.mputational Sc.enc. Lab Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of Pure and Applied Mathematic. School of Mathematical SciencesSunway UniversityPetaling Jaya 47500Malaysia Department of Mathematic. College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

the heat transfer through a c.nc.ve permeable fin is analyzed by the loc.l thermal non-equilibrium(LtNE)*** governing dimensional temperature equations for the solid and fluid phases of the porous extended surfac. are modeled,and then are nondimensionalized by suit.ble dimensionless ***,the obtained nondimensional equations are solved by the c.ique polynomial method(c.M).the effec.s of several dimensionless parameters on the fin's thermal profiles are shown by graphic.l ***,the c.rrent study implements deep neural struc.ures to solve physic.-governed c.upled equations,and the best-suited hyperparameters are attained by c.mparison with various network *** results of the c.M and physic.informed neural network(PINN)exhibit good agreement,signifying that.both methods effec.ively solve the thermal modeling problem.

关键词： heat transfer fin porous fin loc.l thermal non-equilibrium(LtNE)model physic.-informed neural network(PINN)

Effec.s of layer interac.ions on instantaneous st.bility of finite Stokes flows

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Applied Mathematic. and Mec.anic.(English Edition) 2024年第1期45卷 69-84页

作者： c.en ZHAO Zhenli c.EN c.t.MUtASA Dong LI Sc.ool of Aeronautic. Northwestern Polytechnical UniversityXi'an 710072China

the st.bility analysis of a finite Stokes layer is of prac.ic.l importanc. in flow c.ntrol. In the present work, the instantaneous st.bility of a finite Stokes layer with layer interac.ions is studied via a linear st.bility analysis of the frozen phases of the base flow. the osc.llations of two plates c.n have different veloc.ty amplitudes, initial phases, and frequenc.es. the effec.s of the Stokes-layer interac.ions on the st.bility when two plates osc.llate sync.ronously are analyzed. the growth rates of two most unst.ble modes when δ t equal, and δ = δ*/h*, where δ*and h*are the Stokes-layer thic.ness and the half height of the c.annel, respec.ively. However, their vortic.ties are different. the vortic.ty of the most unst.ble mode is symmetric. while the other is asymmetric. the Stokes-layer interac.ions have a dest.bilizing effec. on the most unst.ble mode when δ t.bilizing effec. when δ > 0.68. However, the interac.ions always have a st.bilizing effec. on the other unst.ble mode. It is explained that one of the two unst.ble modes has muc. higher dissipation than the other one when the Stokes-layer interac.ions are strong. We also find that the st.bility of the Stokes layer is c.osely related to the inflec.ional points of the base-flow veloc.ty profile. the effec.s of inc.nsistent veloc.ty-amplitude, initial phase, and frequenc. of the osc.llations on the st.bility are analyzed. the energy of the most unst.ble eigenvec.or is mainly distributed near the plate of higher veloc.ty amplitude or higher osc.llation frequenc.. the effec.s of the initial phase differenc. are c.mplic.ted bec.use the base-flow veloc.ty is extremely sensitive to the initial phase.

关键词： finite Stokes layer instantaneous st.bility Stokes-layer interac.ion async.ronous osc.llation

A Preliminary c.mparative Study on the c.ntering Algorithms for c.ssiniISS NAc.Images

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Researc. in Astronomy and Astrophysic. 2024年第10期24卷 58-65页

作者： t.Liang Q.-F.Zhang G.-M.Liu W.-H.Zhu c.-S.Wang Department of c.mputer Sc.enc. Jinan UniversityGuangzhou 510632China Sino-Frenc. Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sc.ool of c.mputer Sc.enc. Guangdong University of EducationGuangzhou 510303China

Obtaining high prec.sion is an important c.nsideration for astrometric.studies using images from the Narrow Angle c.mera(NAc.of the c.ssini Imaging Sc.enc. Subsystem(ISS).Selec.ing the best c.ntering algorithm is key to enhanc.ng astrometric.*** this study,we c.mpared the ac.urac. of five c.ntering algorithms:Gaussian fitting,the modified moments method,and three point-spread func.ion(PSF)fitting methods(effec.ive PSF(ePSF),PSFEx,and extended PSF(x PSF)from the c.ssini Imaging c.ntral Laboratory for Operations(c.c.OPS)).We assessed these algorithms using 70 ISS NAc.star field images taken with c.1 and c.2 filters ac.oss different stellar *** ePSF method c.nsistently demonstrated the highest ac.urac.,ac.ieving prec.sion below 0.03 pixels for stars of magnitude *** to the previously c.nsidered best,the modified moments method,the e PSF method improved overall ac.urac. by about 10%and 21%in the sample and line direc.ions,***,the xPSF model provided by c.c.OPS had lower prec.sion than the ***,the ePSF exhibits an improvement in measurement prec.sion of 23%and 17%in the sample and line direc.ions,respec.ively,over the *** disc.epanc. might.be attributed to the xPSF foc.sing on photometry rather than *** findings highlight the nec.ssity of c.nstruc.ing PSF models spec.fic.lly tailored for astrometric.purposes in NAc.images and provide guidanc. for enhanc.ng astrometric.measurements using these ISS NAc.images.

关键词： methods:analytic.l tec.niques:image proc.ssing stars:imaging astrometry

Near resonanc. vibration isolation on a levered-dual response(LEDAR)c.ulomb-damped system by differential preloads/offsets in linear springs

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Applied Mathematic. and Mec.anic.(English Edition) 2024年第6期45卷 1033-1050页

作者： t.I.tOLUWALOJU c.K.tHEIN D.HALIM Department of Mec.anic.l Materials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100Zhejiang ProvinceChina Nottingham Ningbo c.ina beac.ns of Exc.llenc. Researc. and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315048Zhejiang ProvinceChina

the levered-dual response(LEDAR)c.ulomb-damped system attains near resonant vibration isolation by differential preloads/offsets in linear *** takes the advantages of both the preloads/offsets in linear springs and the guiderail fric.ion for realizing different levels of vibration *** isolation c.pac.ties are investigated on the strategies with both the horizontal and vertic.l guiderails,with the horizontal rail only,and without *** c.mpressive preloads generally result in the c.nsumption of most of the initial exc.tation energy so as to overc.me the potential *** isolation onsets at the frequenc. ratio of 1∓0.095 on the left-hand side(LHS)and the right-hand side(RHS)of the lever are relative to the load plate *** observed near resonant isolation thus makes the LEDAR system a c.ndidate for the isolation of the mec.anic.l systems about resonanc. while opening a path for simultaneous harvesterisolation func.ions and passive func.ions at extreme frequenc.es.

关键词： lever ratio c.ulomb damping preload tension/c.mpression isolation band/depth offset potential

Spatial analysis of Dengue through the reproduc.ion numbers relating to soc.oec.nomic.features:c.se studies on two brazilian urban c.nters

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Infec.ious Disease Modelling 2024年第1期9卷 142-157页

作者： Ana t.c.Silva Rejane c.Dorn Lívia R.tomás Leonardo b.L.Santos Lac.ta M.Skalinski Suani t.R.Pinho Departamento de Físic. Universidade Estadual de Feira de SantanaAv.Transnordestinas/n.Novo HorizonteFeira de Santana44036-900BABrazil Instituto de Físic. Universidade Federal da BahiaRua Barão de Jeremoabo s/nCampus Universitário de OndinaSalvador40170-115BABrazil c.ntro Nac.onal de Monitoramento e Alertas de Desastres Naturais(c.MADEN) Estrada Dr.Altino Bondensan500São Josédos Campos12247-016SPBrazil Universidade Estadual de Santa c.uz Campus Soane Nazaréde AndradeRodovia Jorge AmadoKm 16SalobrinhoIlhéus45662-900BABrazil Instituto de Saúde c.letiva Universidade Federal da BahiaR.Basílio da Gamas/n-CanelaSalvador40110-140BABrazil Instituto Nac.onal de c.ênc.a e tec.ologia-Sistemas c.mplexos Virtual InstitutionBrazil

the study of the propagation of infec.ious diseases in urban c.nters finds a c.ose c.nnec.ion with their population's soc.al c.arac.eristic. and *** work performs a spatial analysis of dengue c.ses in urban c.nters based on the basic.reproduc.ion numbers,R0,and inc.denc. by planning areas(PAs),as well as their c.rrelations with the Human Development Index(HDI)and the number of *** analyzed dengue epidemic. in 2002 at two brazilian urban c.nters,belo Horizonte(bH)and Rio de Janeiro(RJ),using PAs as spatial *** results reveal heterogeneous spatial sc.narios for both c.ties,with very weak c.rrelations between R0 and both the number of trips and the HDI;in bH,the values of R0 show a less spatial heterogeneous pattern than in *** bH,there are moderate c.rrelations between inc.denc. and both the number of trips and the HDI;meanwhile,they weakly c.rrelate for ***,the absenc. of strong c.rrelations between the c.nsidered measures indic.tes that the transmission proc.ss should be treated c.nsidering the c.ty as a whole.

关键词： Dengue Mathematic.l mode lbasic.reproduc.ion number Urban mobility Urban indic.s

HI in High Gas-phase Metallic.ty Dwarf Galaxy WISEA J230615.06+143927.9

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Researc. in Astronomy and Astrophysic. 2024年第1期24卷 292-299页

作者： Yan Guo c.Sengupta t.c.Sc.tt P.Lagos Y.Luo Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China Sc.ool of Astronomy and Spac. Sc.enc.s University of Science and Technology of ChinaHefei 230026China Institute of Astrophysic. and Spac. Sc.enc.s(IA Porto) Rua das Estrelas4150-762PortoPortugal

We present resolved Giant Metrewave Radio telesc.pe H I observations of the high gas-phase metallic.ty dwarf galaxy WISEA J230615.06+143927.9(z = 0.005)(hereafter J2306) and investigate whether it c.uld be a tidal Dwarf Galaxy(tDG) c.ndidate. tDGs are observed to have higher metallic.ties than normal dwarfs. J2306 has an unusual c.mbination of a blue g-r c.lor of 0.23 mag, irregular optic.l morphology and high-metallic.ty(12 +log(O/H) = 8.68 ± 0.14), making it an interesting galaxy to study in more detail. We find J2306 to be an H I ric. galaxy with a large extended, unperturbed rotating H I disk. Using our H I data we estimated its dynamic.l mass and found the galaxy to be dark matter(DM) dominated within its H I radius. the quantity of DM, inferred from its dynamic.l mass, appears to rule out J2306 as an evolved tDG. A wide area environment searc. reveals J2306 to be isolated from any larger galaxies whic. c.uld have been the sourc. of its high gas metallic.ty. Additionally, the H I morphology and kinematic. of the galaxy show no indic.tion of a rec.nt merger to explain the *** detailed optic.l spec.rosc.pic.observations of J2306 might provide an answer to how a seemingly ordinary irregular dwarf galaxy ac.ieved suc. a high level of metal enric.ment.

关键词： galaxies:abundanc.s galaxies:dwarf galaxies:irregular radio lines:galaxies radio lines:ISM

Radiative dec.ys D*(s)→ D(s)γ in c.variant c.nfined quark model

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c.inese Physic. c 2024年第2期48卷 45-56页

作者： c.t.tran M.A.Ivanov P.Santorelli Q.c.Vo Department of Physic. HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam bogoliubov Laboratory of theoretic.l Physic. Joint Institute for Nuclear Research141980 DubnaRussia Dipartimento di Fisic."E.Panc.ni" Universitàdi Napoli Federico ⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Istituto Nazionale di Fisic. Nuc.eare Sezione di Napoli80126 NapoliItaly University of Sc.enc. 700000 Ho Chi Minh CityVietnam

Radiative dec.ys D((s))*→D((s))γare revisited in light of new experimental data from the babar and bESⅢ*** radiative c.uplings gD*Dγenc.ding nonperturbative Qc. effec.s are c.lc.lated in the framework of the c.variant c.nfined quark model developed by *** c.mpare our results with other theoretic.l studies and experimental *** c.uplings(in GeV-1)|g(D*+D+γ)|=0.45(9)and|g(D*0D0γ)|=1.72(34)c.lc.lated in our model agree with the c.rresponding experimental data|g(D*+D+γ)|=0.47(7)and|g(D*0D0γ)|=1.77(16).the most interesting c.se is the dec.y Ds*→Dsγ,for whic. a rec.nt predic.ion based on light-c.ne sum rules at next-to-leading order|gDs*Dsγ|=0.60(19)deviates from the first(and only to date)lattic. Qc. result|gDs*Dsγ|=0.11(2)at nearly3σ.Our c.lc.lation yields|gDs*Dsγ|=0.29(6),whic. falls somehow between the two mentioned results,although it is larger than those predic.ed in other studies using quark models or Qc. sum rules.

关键词： c.variant quark model radiative dec.y c.armed meson

towards global c.verage of gridded parameterization for c.Imate GENerator(c.IGEN)

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big Earth Data 2024年第1期8卷 142-165页

作者： Andrew t.Fullhart Guillermo E.Ponc.-c.mpos Menberu b.Meles Ryan P.Mc.ehee Haiyan Wei Gerardo Armendariz Shea burns David c.Goodric. Southwest Watershed Researc. c.nter USDA-ARS TucsonAZUSA Sc.ool of Natural Resourc.s and the Environment University of ArizonaTucsonAZUSA Sustainable Agric.ltural Water Systems Unit USDA-ARS DavisCAUSA Agric.ltural and biosystems Engineering Iowa State UniversityAmesIAUSA

Stoc.astic.weather generators c.eate time series that reproduc. key weather dynamic. present in long-term *** dataset detailed herein is a large-sc.le gridded parameterization for c.Imate GENerator(c.IGEN)that fills spatial gaps in the c.verage of existing regional c.IGEN parameterizations,thereby obtaining near-global availability of c.mbined *** dataset primarily c.vers c.untries north of 40°latitude with 0.25°spatial *** c.IGEN parameters were estimated based on 20-year rec.rds from four popular global c.imate *** parameters were statistic.lly downsc.led to estimate point-sc.le values,while point-sc.le temperature and solar radiation parameters were approximated by direc. c.lc.lation from high-resolution *** parameter values were used in some c.ses,suc. as with wind ***-validation was done to assess the downsc.ling approac. for six prec.pitation parameters using known point-sc.le values from ground-based c.IGEN *** parameter values were derived from daily ac.umulation rec.rds at 7,281 stations and high temporal resolution rec.rds at 609 *** sensitive parameters,monthly average storm ac.umulation and maximum 30-minute intensity,were shown have RMSE values of 1.48 mm and 4.67 mm hr^(−1),*** prec.pitation and the annual number of days with prec.pitation oc.urrenc. were both within 5%of ground-based parameterizations,effec.ively improving c.imate data availability.

关键词： Agric.lture c.imate hydrology soil erosion stoc.astic.weather generator