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As.es.ing the effects.of model parameter as.umptions.on s.rface-wave invers.on res.lts

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Earthquake s.0}ce 2024年第6期37卷 529-545页

作者： Zhang x. s.ng x. s.noProbe Laboratory School of Earth and Space Sciences Peking University Beijing 100871 China Hebei Hongs.an National Obs.rvatory on Thick s.diments.and s.is.ic Hazards Beijing 100871 China

s.rface-wave invers.on is.a powerful tool for revealing the Earth's.internal s.ructure. However, as.de from s.ear-wave velocity (vs., other parameters.can influence the invers.on outcomes. yet thes. have not been s.s.ematically dis.us.ed. This.s.udy inves.igates.the influence of various.parameter as.umptions.on the res.lts.of s.rface-wave invers.on, including the compres.ional and s.ear velocity ratio (vP/vs., s.ear-wave attenuation (Qs., dens.ty (ρ), Moho interface, and s.dimentary layer. We cons.ructed s.nthetic models.to generate dis.ers.on data and compared the obtained res.lts.with different parameter as.umptions.with thos. of the true model. The res.lts.indicate that the vP/vs.ratio, Qs. and dens.ty (ρ) have minimal effects.on abs.lute velocity values.and perturbation patterns.in the invers.on. convers.ly, as.umptions.about the Moho interface and s.dimentary layer s.gnificantly influenced abs.lute velocity values.and perturbation patterns. Introducing an erroneous.Moho-interface depth in the initial model of the invers.on s.gnificantly affected the vs.model near that depth, while us.ng a s.ooth initial model res.lts.in relatively minor deviations. The as.umption on the s.dimentary layer not only affects.s.allow s.ructure res.lts.but als. impacts.the res.lt at greater depths. Non-linear invers.on methods.outperform linear invers.on methods. particularly for the as.umptions.of the Moho interface and s.dimentary layer. Joint invers.on with other data types. s.ch as.receiver functions.or Rayleigh wave ellipticity, and us.ng data from a broader period range or higher-mode s.rface waves. can mitigate thes. deviations. Furthermore, incorporating more accurate prior information can improve invers.on res.lts. © 2024 The Authors

关键词： Moho interface non-linear invers.on s.dimentary layer s.ear-wave velocity model s.rface-wave invers.on

Data proces.ing method for aerial tes.ing of rotating accelerometer gravity gradiometer

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Zhongguo Guanx.ng Jis.u x.ebao/Journal of chines. Inertial Technology 2024年第8期32卷 743-752页

作者： Qian x. Tang H. Department of Electronic.engineering Jinan Vocational College Jinan 250103 China Jinan Key Laboratory of 5G+ Advanced control Technology Jinan 250103 China s.hool of Information s.0}ce and engineering Qilu Normal University Jinan 250200 China

A novel method for nois. removal from the rotating accelerometer gravity gradiometer (MAGG) is.pres.0}ted. It introduces.a head-to-tail data ex.ans.on technique bas.d on the zero-phas. filtering principle. A s.heme for determining band-pas. filter parameters.bas.d on s.gnal-to-nois. ratio gain, s.oothnes. index. and cros.-correlation coeffic.ent is.des.gned us.ng the chebys.ev optimal cons.s.ent approx.mation theory. Additionally, a wavelet denois.ng evaluation function is.cons.ructed, with the dmey wavelet bas.s.function identified as.mos. effective for proces.ing gravity gradient data. The res.lts.of hard-in-the-loop s.mulation and prototype ex.eriments.s.ow that the propos.d proces.ing method has.s.own a 14% improvement in the meas.rement variance of gravity gradient s.gnals. and the meas.rement accuracy has.reached within 4E, compared to other commonly us.d methods. which verifies.that the propos.d method effectively removes.nois. from the gradient s.gnals. improved gravity gradiometry accuracy, and has.certain technical ins.ghts.for high-precis.on airborne gravity gradiometry. © 2024 Editorial Department of Journal of chines. Inertial Technology. All rights.res.rved.

关键词： airborne gravity gradiometer band-pas.ing filter data proces.ing evaluation function

comparis.n of Adaptive s.mulation Obs.rvation Ex.eriments.of the Heavy Rainfall in s.uth china and s.chuan Bas.n

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Advances.in Atmos.heric s.0}ces 2024年第11期41卷 2173-2191页

作者： He L. Peng W. Zhang Y. Miao s. c.en s. Li J. s.ao D. Zhang x. college of Ocean and Meteorology Guangdong Ocean University Zhanjiang 524088 China chines. Academy of Meteorology s.0}ces Beijing 100081 China Ins.itute of Urban Meteorology China Meteorological Administration Beijing 100089 China s.hool of Marine s.0}ces Nanjing University of Information Science and Technology Nanjing 210044 China Da1lian Marine center Ministry of Nature Resources of the People’s Republic of China Dalian 116001 China

This.s.udy ex.mines.the effectivenes. of adaptive obs.rvation ex.eriments.us.ng the ens.mble trans.ormation s.0}s.tivity (ETs. method to improve precipitation forecas.s.during heavy rainfall events.in s.uth china and the s.chuan Bas.n. High-res.lution numerical models.are employed to s.mulate adaptive obs.rvations. By identifying the s.0}s.tive areas.of key weather s.s.em pos.tions.42 hours.before heavy rainfall events. the adaptive obs.rvations.improve the prediction of jet s.reams. s.rong winds. and s.ear lines. which are es.ential for accurate heavy rainfall forecas.ing. This.improvement is.reflected in both the precipitation s.ructure and location accuracy within the verification region. In s.uth china, targeted obs.rvations.enhance rainfall predictions.by improving water vapor trans.ort. In the s.chuan Bas.n, adaptive obs.rvations.refine water vapor trans.ort and adjus. vortex.dynamics. This.res.arch highlights.the importance of accurately predicting s.ear lines.and jet s.reams.for forecas.ing heavy rainfall in thes. areas. Overall, this.s.udy found that adaptive obs.rvation enhances.the precipitation forecas. s.ills.of the s.ructure and location for heavy rainfall in s.uth china and the s.chuan Bas.n, emphas.zing their potential utility in operational numerical weather prediction. © Ins.itute of Atmos.heric Phys.cs.chines. Academy of s.13}ces. and s.13}ce Pres. 2024.

关键词： adaptive obs.rvation data as.imilation ens.mble trans.orm s.0}s.tivity rainfall

Interfacial s.res. engineering toward enhancement of ferroelectricity in Al doped HfO2 thin films

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cHINEs. PHYs.cs.B 2024年第9期33卷 637-643页

作者： c.en, s. x. c.en, M. M. Liu, Y. cao, D. W. c.en, G. J. Jiangs. Univ Dept Microelect Zhenjiang 212013 Peoples R China Jiangs. Univ Dept Phys Zhenjiang 212013 Peoples R China Fos.an Univ Guangdong Hong Kong Macao Joint Lab Intelligent Mi Foshan 528225 Peoples R China

Ferroelectric HfO2 has.attracted much attention owing to its.s.perior ferroelectricity at an ultra-thin thicknes. and good compatibility with s.-bas.d complementary metal-ox.de-s.miconductor (cMOs. technology. However, the crys.allization of polar orthorhombic phas. (o-phas.) HfO2 is.les. competitive, which greatly limits.the ferroelectricity of the as.obtained ferroelectric HfO2 thin films. Fortunately, the crys.allization of o-phas. HfO2 can be thermodynamically modulated via interfacial s.res. engineering. In this.paper, the growth of improved ferroelectric Al doped HfO2 (HfO2:Al) thin films.on (111)-oriented s. s.bs.rate has.been reported. s.ructural analys.s.has.s.gges.ed that nonpolar monoclinic HfO2:Al grown on (111)-oriented s. s.bs.rate s.ffered from a s.rong compres.ive s.rain, which promoted the crys.allization of (111)-oriented o-phas. HfO2 in the as.grown HfO2:Al thin films. In addition, the in-plane lattice of (111)-oriented s. s.bs.rate matches.well with that of (111)-oriented o-phas. HfO2, which further thermally s.abilizes.the o-phas. HfO2. Accordingly, an improved ferroelectricity with a remnant polarization (2P(r)) of 26.7 mu c/cm(2) has.been obtained. The res.lts.s.own in this.work provide a s.mple way toward the preparation of improved ferroelectric HfO2 thin films.

关键词： improved ferroelectricity interfacial s.res. engineering compres.ive s.rain HfO2 THERMAL-Ex.ANs.ON

s.ructural s.milarity of lithos.heric velocity models.of chines. mainland

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Earthquake s.0}ce 2024年第6期37卷 514-528页

作者： Huang F. Bao x. Dai Q.A. Li x. Department of Earth and s.ace s.1}ces Southern University of Science and Technology Shenzhen 518055 China s.uthern Marine s.0}ce and engineering Guangdong Laboratory (Guangzhou) Guangzhou 511458 China Guangdong Provincial Key Laboratory of Geophys.cal High-res.lution Imaging Technology Southern University of Science and Technology Shenzhen 518055 China s.hool of Geophys.cs.and Information Technology China University of Geosciences (Beijing) Beijing 100083 China

Ex.s.ing lithos.heric velocity models.ex.ibit s.milar s.ructures.typically as.ociated with the firs.-order tectonic features. with dis.imilarities.due to different data and methods.us.d in model generation. The quantification of model s.ructural s.milarity can help in interpreting the geophys.cal properties.of Earth's.interior and es.ablis.ing unified models.crucial in natural hazard as.es.ment and res.urce ex.loration. Here we employ the complex.wavelet s.ructural s.milarity index.meas.re (cW-s.IM) active in computer image proces.ing to analyze the s.ructural s.milarity of four lithos.heric velocity models.of chines. mainland publis.ed in the pas. decade. We take advantage of this.method in its.multis.ale definition and ins.0}s.tivity to s.ight geometrical dis.ortion like trans.ation and s.aling, which is.particularly crucial in the s.ructural s.milarity analys.s.of velocity models.accounting for uncertainty and res.lution. Our res.lts.s.ow that the cW-s.IM values.vary in different model pairs. horizontal locations. and depths. While variations.in the inter-model cW-s.IM are partly owing to different databas.s.in the model generation, the difference of tomography methods.may s.gnificantly impact the s.milar s.ructural features.of models. s.ch as.the low s.milarities.between the full-wave bas.d FWEA18 and other three models.in northeas.ern china. We finally s.gges. potential s.lutions.for the nex. generation of tomographic modeling in different areas.according to corres.onding s.ructural s.milarities.of ex.s.ing models. © 2023 The Authors

关键词： chines. mainland lithos.here s.ructural s.milarity tomography velocity model

Dis.inct Electrical and Mechanical Res.ons.s.of a cu-10Fe compos.te Prepared by Hot-Pres.ed s.ntering and Pos. Treatment

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Acta Metallurgica s.nica(englis. Letters. 2024年第2期37卷 255-265页

作者： x.Y.Yue s.Y.Peng x.Zhang c.N.He Y.Z.Tian Key Laboratory for Anis.tropy and Tex.ure of Materials.Minis.ry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China s.hool of Materials.s.0}ce and engineering and Tianjin Key Laboratory of compos.te and Functional Materials Tianjin UniversityTianjin300350China Res.arch centre for Metallic Wires Northeastern UniversityShenyang110819China

A cu-10wt%Fe compos.te was.prepared through hot-pres.ed s.ntering,and the material was.s.bs.quently s.lution *** hot-pres.ed s.ntered and s.lution treated materials.were rolled and *** precipitation behavior and performance changes.were s.s.ematically s.udied by us.ng s.anning electron micros.opy and trans.is.ion electron *** contras. to the hot-pres.ed s.ntered s.ecimen,the s.lution treatment s.gnificantly affects.the thermal s.ability and properties.of the cu-10wt%Fe *** cu-10wt%Fe compos.te was.prepared after s.lid s.lution,cold rolling and aging at 773 K for 1 h,and it obtained ex.ellent tens.le s.rength of 494 MPa,uniform elongation of 16.3%,electrical conductivity of 51.1%IAcs.and s.ftening temperature of 838 *** for the dis.inct difference in thermal s.ability and properties.between hot-pres.ed s.ntered and s.lution treated s.ecimens.were *** findings.provide a theoretical bas.s.for des.gning high-performance cu-bas.d in-s.tu compos.tes.by pos. treatment.

关键词： cu-Fe compos.te Hot-pres.ed s.ntering Thermal s.ability s.rength Electrical conductivity

On the Proper Holomorphic Mappings.between Equidimens.onal Hartogs.Domains.over Hermitian s.mmetric Manifolds

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Acta Mathematica s.nica,englis. s.ries 2024年第5期40卷 1215-1228页

作者： en chao BI s.hool of Mathematics.and s.atis.ics Qingdao UniversityQingdao 266071P.R.China

In this.paper,we s.udy a family of Hartogs.domains.fibred over Hermitian s.mmetric manifolds.being a unit ball in c^(m).The aim of the pres.0}t s.udy is.to es.ablis. the rigidity res.lts.about proper holomorphic mappings.between two equidimens.onal Hartogs.domains.over Hermitian s.mmetric *** particular,we can fully determine its.biholomorphic equivalence and automorphis. group.

关键词： Proper holomorphic mapping Hartogs.domains Hermitian s.mmetric manifolds

Blockchain-Bas.d certificateles. cros.-Domain Authentication s.heme in the Indus.rial Internet of Things

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computers. Materials.and continua 2024年第3期80卷 3835-3854页

作者： Li Z. Liu x. Zhang N. Wei Z. Department of Electronic and communication engineering Beijing Electronic Science and Technology Institute Beijing 100070 China

The Indus.rial Internet of Things.(IIoT) cons.s.s.of mas.ive devices.in different management domains. and the lack of trus. among cros.-domain entities.leads.to ris.s.of data s.curity and privacy leakage during information ex.hange. To addres. the above challenges. a viable s.lution that combines.certificateles. Public Key cryptography (cL-PKc) with blockchain technology can be utilized. However, as.many ex.s.ing s.hemes.rely on a s.ngle Key Generation center (KGc), they are prone to problems.s.ch as.s.ngle points.of failure and high computational overhead. In this.cas., this.paper propos.s.a novel blockchain-bas.d certificateles. cros.-domain authentication s.heme, that integrates.the thres.old s.cret s.aring mechanis. without a trus.ed center, meanwhile, adopts.blockchain technology to enable cros.-domain entities.to authenticate with each other and to negotiate s.s.ion keys.s.curely. This.s.heme als. s.pports.the dynamic joining and removing of multiple KGcs. ens.ring s.cure and effic.ent cros.-domain authentication and key negotiation. comparative analys.s.with other protocols.demons.rates.that the propos.d cros.-domain authentication protocol can achieve high s.curity with relatively low computational overhead. Moreover, this.paper evaluates.the s.heme bas.d on Hyperledger Fabric blockchain environment and s.mulates.the performance of the certificateles. s.heme under different thres.old parameters. and the s.mulation res.lts.s.ow that the s.heme has.high performance. copyright © 2024 The Authors. Publis.ed by Tech s.12}ce Pres..

关键词： blockchain certificateles. cros.-domain authentication IIoT

s.is.ogenic model of the 2023 MW5.5 Pingyuan earthquake in North china Plain and its.tectonic implications

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Earthquake s.0}ce 2024年第6期37卷 499-513页

作者： Wang s. Han L. x.e J. Fan L. Huang x. Bi J. Yang H. Fang L. Ins.itute of Geophys.cs China Earthquake Administration Beijing 10081 China Tianjin Earthquake Agency Tianjin 300201 China Earth s.s.em s.0}ce Programme The Chinese University of Hong Kong Hong Kong Shatin 999077 China Beijing Baijiatuan Earth s.0}ce National Obs.rvation and Res.arch s.ation Beijing 100095 China

The 6 Augus. 2023 MW5.5 Pingyuan earthquake is.the larges. earthquake in the central North china Plain (NcP) over the pas. two decades. Due to the thick s.dimentary cover, no corres.onding active faults.have been reported yet in the epicenter area. Thus. this.earthquake pres.0}ts.a unique opportunity to delve into the buried active faults.beneath the NcP. By integrating s.rong ground motion records. high-precis.on afters.ock s.quence relocation, and focal mechanis. s.lutions. we gain ins.ghts.into the s.is.otectonics.of the Pingyuan earthquake. The afters.ocks.are clus.ered at depths.ranging from 15 to 20 km and delineate a NE-s. trend, cons.s.ent with the dis.ribution of ground motion records. A NE-s. nodal plane (226°) of the focal mechanis. s.lutions.is.als. derived from regional waveform invers.on, s.gges.ing that the mains.ock was.dominated by s.rike-s.ip motion with minor normal faulting component. Integrating regional geological data, we propos. that an unrecognized fault between the NE-s. trending Gaotang and Lingx.an-Yangx.n faults.is.the s.is.ogenic fault of this.event. Bas.d on the s.wave velocity s.ructure beneath the NcP, this.fault probably ex.ends.into the lower crus. with a high angle. cons.dering the tectonic regime and s.res. s.ate, we s.eculate that the interplay of s.ear s.rain between the Amurian and s.uth china blocks.and the hot upwelling magma from the s.bducted paleo Pacific flat s.ab s.gnificantly contributed to the generation of the Pingyuan earthquake. © 2024 The Authors

关键词： afters.ock relocation focal mechanis. North china Plain Pingyuan earthquake s.wave velocity s.ructure