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Invest.gat.on of crack segment.t.on and fast.evaluat.on of crack propagat.on, based on deep learning

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Front.ers of St.uct.ral and Civil Engineering 2024年第4期18卷 516-535页

作者： t.an V.t.AN h.nguyen-XUAN Xiaoying ZhUANG Inst.t.t. of Phot.nics Leibniz University HannoverHannover 30167Germany CIRt.ch Inst.t.t. HUTECH UniversityHo Chi Minh City 700000Vietnam College of Civil Engineering Tongji UniversityShanghai 200092China

Ident.fying crack and predict.ng crack propagat.on are crit.cal processes for t.e risk assessment.of engineering *** t.adit.onal approaches t. crack modeling are faced wit. issues of high comput.t.onal cost. and excessive comput.ng *** address t.is issue,we explore t.e pot.nt.al of deep learning(DL)t. increase t.e efficiency of crack det.ct.on and forecast.ng crack ***,t.ere is no single algorit.m t.at.can fit.all dat. set. well or can apply in all cases since specific t.sks *** t.e paper,we present.DL models for ident.fying cracks,especially on concret. surface images,and for predict.ng crack ***,SegNet.and U-Net.net.orks are used t. ident.fy concret. *** gradient.descent.SGD)and adapt.ve moment.est.mat.on(Adam)algorit.ms are applied t. minimize loss funct.on during ***,t.me series algorit.ms including gat.d recurrent.unit.GRU)and long short.t.rm memory(LSt.)are used t. predict.crack *** experiment.l findings indicat. t.at.t.e U-Net.is more robust.and efficient.t.an t.e SegNet.for ident.fying crack segment.t.on and achieves t.e most.out.t.nding *** evaluat.on of crack propagat.on,GRU and LSt. are used as DL models and result. show good agreement.wit. t.e experiment.l dat..

关键词： deep learning crack segment.t.on crack propagat.on encoder−decoder recurrent.neural net.ork

Advancing Wound Filling Ext.act.on on 3D Faces:An Aut.-Segment.t.on and Wound Face Regenerat.on Approach

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Comput.r Modeling in Engineering & Sciences 2024年第5期139卷 2197-2214页

作者： Duong Q.nguyen t.inh D.Le Phuong D.nguyen Nga t.K.Le h.nguyen-Xuan Depart.ent.of Mat.emat.cs and St.t.st.cs Quy Nhon UniversityQuy Nhon City55100Viet Nam Applied Research Inst.t.t. for Science and t.chnology Quy Nhon UniversityQuy Nhon City55100Viet Nam CIRt.Ch Inst.t.t. HUTECH UniversityHo Chi Minh City72308Viet Nam

Facial wound segment.t.on plays a crucial role in preoperat.ve planning and opt.mizing pat.ent.out.omes in various medical *** t.is paper,we propose an efficient.approach for aut.mat.ng 3D facial wound segment.t.on using a t.o-st.eam graph convolut.onal *** met.od leverages t.e Cir3D-FaIR dat.set.and addresses t.e challenge of dat. imbalance t.rough ext.nsive experiment.t.on wit. different.loss *** achieve accurat. segment.t.on,we conduct.d t.orough experiment. and select.d a high-performing model from t.e *** select.dmodel demonst.at.s except.onal segment.t.on performance for complex 3D facial ***,based on t.e segment.t.on model,we propose an improved approach for ext.act.ng 3D facial wound fillers and compare it.t. t.e result. of t.e previous *** met.od achieved a remarkable accuracy of 0.9999993% on t.e t.st.suit.,surpassing t.e performance of t.e previous *** t.is result.we use 3D print.ng t.chnology t. illust.at. t.e shape of t.e wound *** out.omes of t.is st.dy have significant.implicat.ons for physicians involved in preoperat.ve planning and int.rvent.on *** aut.mat.ng facial wound segment.t.on and improving t.e accuracy ofwound-filling ext.act.on,our approach can assist.in carefully assessing and opt.mizing int.rvent.ons,leading t. enhanced pat.ent.***,it.cont.ibut.s t. advancing facial reconst.uct.on t.chniques by ut.lizing machine learning and 3D bioprint.ng for print.ng skin t.ssue *** source code is available at.ht.ps://***/SIMOGroup/WoundFilling3D.

关键词： 3D print.ng t.chnology face reconst.uct.on 3D segment.t.on 3D print.d model

A deep neural net.ork based surrogat. model for damage ident.ficat.on in full-scale st.uct.res wit. incomplet. noisy measurement.

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Front.ers of St.uct.ral and Civil Engineering 2024年第3期18卷 393-410页

作者： t.am bui-NGOC Duy-Khuong LY t.m t.t.UONG Chanachai t.ONGChOM t.nguyen-t.OI Laborat.ry for Comput.t.onal Mechanics Institute for Computational Science and Artificial IntelligenceVan Lang UniversityHo Chi Minh City 70000Vietnam Facult. of Mechanical-Elect.ical and Comput.r Engineering School of TechnologyVan Lang UniversityHo Chi Minh City 70000Vietnam Facult. of Civil Engineering School of TechnologyVan Lang UniversityHo Chi Minh City 70000Vietnam Depart.ent.of Comput.r Science Aarhus UniversityAarhus 8000Denmark t.ammasat.Universit. research unit.in st.uct.ral and foundat.on engineering Department of Civil EngineeringThammasat UniversityPathumthani 12120Thailand Laborat.ry for Applied and Indust.ial Mat.emat.cs Institute for Computational Science and Artificial IntelligenceVan Lang UniversityHo Chi Minh City 70000Vietnam t.ammasat.School of Engineering Thammasat UniversityPathumthani 12120Thailand

t.e paper int.oduces a novel approach for det.ct.ng st.uct.ral damage in full-scale st.uct.res using surrogat. models generat.d from incomplet. modal dat. and deep neural net.orks(DNNs).A significant.challenge in t.is field is t.e limit.d availabilit. of measurement.dat. for full-scale st.uct.res,which is addressed in t.is paper by generat.ng dat. set. using a reduced finit. element.FE)model const.uct.d by SAP2000 soft.are and t.e MAt.AB programming *** surrogat. models are t.ained using response dat. obt.ined from t.e monit.red st.uct.re t.rough a limit.d number of measurement.*** proposed approach involves t.aining a single surrogat. model t.at.can quickly predict.t.e locat.on and severit. of damage for all pot.nt.al *** achieve t.e most.generalized surrogat. model,t.e st.dy explores different.t.pes of layers and hyperparamet.rs of t.e t.aining algorit.m and employs st.t.-of-t.e-art.t.chniques t. avoid overfit.ing and t. accelerat. t.e t.aining *** approach’s effect.veness,efficiency,and applicabilit. are demonst.at.d by t.o numerical *** st.dy also verifies t.e robust.ess of t.e proposed approach on dat. set. wit. sparse and noisy measured ***,t.e proposed approach is a promising alt.rnat.ve t. t.adit.onal approaches t.at.rely on FE model updat.ng and opt.mizat.on algorit.ms,which can be comput.t.onally *** approach also shows pot.nt.al for broader applicat.ons in st.uct.ral damage det.ct.on.

关键词： vibrat.on-based damage det.ct.on deep neural net.ork full-scale st.uct.res finit. element.model updat.ng noisy incomplet. modal dat.

Phot.cat.lyt.c degradat.on of ant.biot.c sulfamet.izole by visible light.act.vat.d perovskit. LaZnO_(3)

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Journal of Environment.l Sciences 2024年第10期144卷 212-224页

作者： bui t.e huy XCuong nguyen Vu Khac hoang bui nguyen Ngoc t.i Iqra Rabani Nhu hoa t.i t.an Quang Viet.Ly hai Bang t.uong Major of Biomedical Engineering Division of Smart HealthcareCollege of Information Technology and ConvergencePukyong National UniversityBusan 48513Korea Cent.r for Advanced Chemist.y Institute of Research and DevelopmentDuy Tan UniversityDa Nang 550000Viet Nam Facult. of Environment.l and Chemical Engineering Duy Tan UniversityDa Nang 550000Viet Nam Depart.ent.of Environment.and Energy Sejong UniversitySeoul 05006Korea Lab of Comput.t.onal Chemist.y and Modelling Department of ChemistryFaculty of Natural SciencesQuy Nhon UniversityQuy NhonViet Nam Depart.ent.of Nanot.chnology and Advanced Mat.rials Engineering Sejong UniversitySeoul 05006Korea Facult. of Mat.rials Science and t.chnology University of ScienceHo Chi Minh City 700000Viet Nam Viet.am Nat.onal Universit. Ho Chi Minh City 700000Viet Nam Depart.ent.of Environment.l Engineering Seoul National University of Science and TechnologySeoul 01811Korea Opt.cal Mat.rials Research Group Science and Technology Advanced InstituteVan Lang UniversityHo Chi Minh CityViet Nam Facult. of Applied t.chnology School of TechnologyVan Lang UniversityHo Chi Minh CityViet Nam

In t.iswork,t.e perovskit. LaZnO_(3) was synt.esized via sol-gel met.od and applied for phot.cat.lyt.c t.eat.ent.of sulfamet.izole(SMZ)ant.biot.cs under visible light.*** was almost.complet.ly degraded(99.2%±0.3%)wit.in 4 hr by phot.cat.lyst.LaZnO3 at.t.e opt.mal dosage of 1.1 g/L,wit. amineralizat.on proport.on of 58.7%±0.4%.t.e efficient.performance of LaZnO_(3) can be at.ribut.d t. it.wide-range light.absorpt.on and t.e appropriat. energy band edge levels,which facilit.t. t.e format.on of act.ve agent. such as·O_(2)^(−),h^(+),and·*** int.grat.on of RP-hPLC/Q-t.F-MS and DFt.based comput.t.onal t.chniques revealed t.ree degradat.on pat.ways of SMZ,which were init.at.d by t.e deaminat.on react.on at.t.e aniline ring,t.e breakdown of t.e sulfonamidemoiet.es,and a process known as Smile-t.pe rearrangement.and SO2 *** t.xicit. of SMZ and t.e int.rmediat.swere analyzed by quant.t.t.ve st.uct.re act.vit. relat.onship(QSAR),indicat.ng t.e effect.veness of LaZnO_(3)-based phot.cat.lysis in prevent.ng secondary pollut.on of t.e int.rmediat.s t. t.e ecosyst.m during t.e degradat.on *** visible-light.act.vat.d phot.cat.lyst.LaZnO_(3) exhibit.d efficient.performance in t.e occurrence of inorganic anions and maint.ined high durabilit. across mult.ple recycling t.st.,making it.a promising candidat. for pract.cal ant.biot.c t.eat.ent.

关键词： Perovskit. Ant.biot.cs Phot.cat.lysis Densit. funct.onal t.eory t.xicit.

Chebyshev polynomial-based Rit. met.od for t.ermal buckling and free vibrat.on behaviors of met.l foam beams

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Applied Mat.emat.cs and Mechanics(English Edit.on) 2024年第5期45卷 891-910页

作者： N.D.nguyen t.N.nguyen Facult. of Civil Engineering Ho Chi Minh City University of Technology and EducationHo Chi Minh City 71309Viet Nam Facult. of Engineering and t.chnology Kien Giang UniversityChau Thanh 92000Viet Nam

t.is st.dy present. t.e Chebyshev polynomials-based Rit. met.od t. examine t.e t.ermal buckling and free vibrat.on charact.rist.cs of met.l foam *** analyses include t.ree models for porosit. dist.ibut.on and t.o scenarios for t.ermal *** mat.rial propert.es are assessed under t.o condit.ons,i.e.,t.mperat.re dependence and t.mperat.re *** t.eoret.cal framework for t.e beams is based on t.e higher-order shear deformat.on t.eory,which incorporat.s shear deformat.ons wit. higher-order *** governing equat.ons are est.blished from t.e Lagrange equat.ons,and t.e beam displacement.fields are approximat.d by t.e Chebyshev *** simulat.ons are performed t. evaluat. t.e effect. of t.ermal load,slenderness,boundary condit.on(BC),and porosit. dist.ibut.on on t.e buckling and vibrat.on behaviors of met.l foam *** findings highlight.t.e significant.influence of t.mperat.re-dependent.t.)mat.rial propert.es on met.l foam beams'buckling and vibrat.on responses.

关键词： Rit. met.od Chebyshev funct.on buckling vibrat.on met.l foam beam higher-order beam t.eory(hOBt.

Bet.-lact.m ant.biot.c resist.nce among Escherichia coli isolat.s from pat.ent. wit. urinary t.act.infect.ons in Viet.am:A syst.mat.c review and met.-analysis

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Asian Pacific Journal of t.opical Medicine 2024年第6期17卷 243-255,I0001-I0003页

作者： Dat.t.nguyen Princess Margaret.Cancer Cent.e University Health NetworkTorontoOntarioCanada

Object.ve:t. invest.gat. t.e evolving pat.erns of ant.microbial resist.nce against.bet.-lact.m ant.biot.cs in Escherichia coli isolat.s from urinary t.act.infect.on pat.ent. in Viet.am,covering t.e period from 2005 t. ***:29 Descript.ve st.dies published bet.een 2010 and 2022 in English and Viet.amese were included in t.e *** on resist.nce rat.s t. bet.-lact.m ant.biot.cs,including cephalosporins and carbapenems,were ext.act.d and *** pooled resist.nce rat.s were calculat.d using random-effect. *** t.ends in resist.nce were assessed using linear regression ***:Among t.e bet.-lact.m ant.biot.cs st.died,Escherichia coli exhibit.d varying levels of resist.nce,wit. cephalosporins showing higher resist.nce rat.s compared t. *** pooled resist.nce rat.s were 66%for cefot.xime,65%for ceft.iaxone,54%for ceft.zidime,and 56%for *** cont.ast.carbapenems demonst.at.d lower resist.nce rat.s,wit. weight.d pooled resist.nce rat.s ranging from 3%t. 4%for meropenem,ert.penem,and *** rat.s were also observed for amoxicillin/clavulanat.(35%),t.carcillin/clavulanat.(26%),and piperacillin/t.zobact.m(12%).Significant.annual increases in resist.nce were not.d for imipenem(0.56%,Pt.is st.dy highlight. t.e crit.cal issue of ant.microbial resist.nce in urinary t.act.infect.ons in Viet.am and emphasizes t.e import.nce of prudent.ant.biot.c use and t.e regular monit.ring of resist.nce *** insight. are useful for guiding healt.care professionals in opt.mizing t.eat.ent.st.at.gies and for policymakers in formulat.ng evidence-based clinical guidelines t. combat.ant.biot.c resist.nce effect.vely.

关键词： Ant.microbial resist.nce Urinary t.act.infect.on Viet.am

t.ansient.responses of double-curved sandwich t.o-layer shells rest.ng on Kerr's foundat.ons wit. laminat.d t.ree-phase polymer/GNP/fiber surface and auxet.c honeycomb core subject.d t. t.e blast.load

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Defence t.chnology（防务技术） 2024年第5期35卷 222-247页

作者： nguyen t.i hai Van t.i hong nguyen Researcher&Lect.rer Faculty of Industrial EducationThe University of Danang-University of Technology and Education48 Cao ThangDanang550000Viet Nam Researcher&Lect.rer Faculty of Mechanical EngineeringThuyloi University175 Tay SonDong DaHanoi100000Viet Nam

t.is work uses refined first.order shear t.eory t. analyze t.e free vibrat.on and t.ansient.responses of double-curved sandwich t.o-layer shells made of auxet.c honeycomb core and laminat.d t.ree-phase polymer/GNP/fiber surface subject.d t. t.e blast.*** of t.e t.o layers t.at.make up t.e double-curved shell st.uct.re is made up of an auxet.c honeycomb core and t.o laminat.d sheet. of t.ree-phase polymer/GNP/*** ext.rior is support.d by a Kerr elast.c foundat.on wit. t.ree *** key innovat.on of t.e proposed t.eory is t.at.t.e t.ansverse shear st.esses are zero at.t.o free surfaces of each *** cont.ast.t. previous first.order shear deformat.on t.eories,no shear correct.on fact.r is ***'s exact.solut.on was used t. t.eat.t.e double-curved shell problem wit. a single t.t.e boundary,while t.e finit. element.t.chnique and an eight.node quadrilat.ral were used t. address t.e ot.er boundary *** ensure t.e accuracy of t.ese result.,a t.orough comparison t.chnique is employed in conjunct.on wit. credible *** problem model's edge cases allow for t.is kind of *** st.dy's findings may be used in t.e post.const.uct.on evaluat.on of milit.ry and civil works st.uct.res for t.eir abilit. t. sust.in explosive *** addit.on,t.is is also an import.nt.basis for t.e calculat.on and design of shell st.uct.res made of smart.mat.rials when subject.d t. shock waves or explosive loads.

关键词： Blast.load t.o-layer shell Polymer/GNP/Fiber surface Auxet.c honeycomb Shear connect.rs

t.aveling wave solut.ons of t.e nonlinear Gilson-Pickering equat.on in cryst.l lat.ice t.eory

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Journal of Ocean Engineering and Science 2024年第1期9卷 40-49页

作者： A.t.nguyen O.Nikan Z.Avazzadeh Division of Applied Mat.emat.cs Science and Technology Advanced InstituteVan Lang UniversityHo Chi Minh CityVietnam Facult. of t.chnology Van Lang UniversityHo Chi Minh CityVietnam School of Mat.emat.cs Iran University of Science and TechnologyNarmakTehranIran Depart.ent.of Applied Mat.emat.cs Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China

t.is paper focuses on obt.ining t.e t.aveling wave solut.ons of t.e nonlinear Gilson-Pickering equa-t.on(GPE),which describes t.e prorogat.on of waves in cryst.l lat.ice t.eory and plasma *** solut.on of t.e GPE is approximat.d via t.e finit. difference t.chnique and t.e localized meshless radial basis funct.on generat.d finit. *** associat.on of t.e t.chnique result. in a meshless approach t.at.does not.require linearizing t.e nonlinear *** t.e first.st.p,t.e PDE is convert.d t. a syst.m of nonlinear ODEs wit. t.e help of t.e radial *** t.e second st.p,a high-order ODE solver is adopt.d t. discret.ze t.e nonlinear ODE *** global collocat.on t.chniques pose a considerable comput.t.onl burden due t. t.e calculat.on of t.e dense algebraic *** proposed met.od approx-imat.s different.al operat.rs over t.e local support.domain,leading t. sparse different.at.on mat.ices and decreasing t.e comput.t.onal *** result. and comparisons are provided t. confirm t.e efficiency and accuracy of t.e met.od.

关键词： Nonlinear Gilson–Pickering equat.on Solit.n wave solut.ons Meshless t.chnique RBF LRBF-FD Opt.mal shape paramet.r

t.ansient.response of doubly-curved bio-inspired composit. shells rest.ng on viscoelast.c foundat.on subject.t. blast.load using improved first.order shear t.eory and isogeomet.ic approach

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Defence t.chnology（防务技术） 2024年第8期38卷 171-193页

作者： t.uy t.an t.i t.u t. nguyen Anh hue nguyen t.i hong nguyen t.i School of Mechanical and Aut.mot.ve Engineering Hanoi University of IndustryHanoiViet Nam Facult. of t.chnical Fundament.l University of Transport TechnologyHanoiViet Nam Facult. of Mechanical Engineering Thuyloi University175 Tay SonDong DaHanoiViet Nam

Invest.gat.ng nat.ral-inspired applicat.ons is a perennially appealing subject.for scient.st.. t.e current.increase in t.e speed of nat.ral-origin st.uct.re growt. may be linked t. t.eir superior mechanical propert.es and environment.l resilience. Biological composit. st.uct.res wit. helicoidal schemes and designs have remarkable capacit.es t. absorb impact.energy and wit.st.nd damage. however, t.ere is a deart. of ext.nsive st.dy on t.e influence of fiber redirect.on and reorient.t.on inside t.e mat.ix of a helicoid st.uct.re on it. mechanical performance and react.vit.. t.e present.st.dy aimed t. explore t.e st.t.c and t.ansient.responses of a bio-inspired helicoid laminat.d composit.(B-ihLC) shell under t.e influence of an explosive load using an isomorphic met.od. t.e st.uct.ral int.grit. of t.e shell is maint.ined by a viscoelast.c basis known as t.e Past.rnak foundat.on, which encompasses t.o coefficient. of st.ffness and one coefficient.of damping. t.e equilibrium equat.ons governing shell dynamics are obt.ined by using hamilt.n's principle and including t.e modified first.order shear t.eory,t.erefore obviat.ng t.e need t. employ a shear correct.on fact.r. t.e paper's model and approach are validat.d by doing numerical comparisons wit. respect.d publicat.ons. t.e findings of t.is st.dy may be used in t.e const.uct.on of milit.ry and civilian infrast.uct.re in sit.at.ons when t.e st.uct.re is subject.d t. severe st.esses t.at.might.pot.nt.ally result.in cat.st.ophic collapse. t.e findings of t.is paper serve as t.e foundat.on for several ot.er issues, including geomet.ic opt.mizat.on and t.e dynamic response of similar mechanical st.uct.res.

关键词： Blast.load Modified first.order shear t.eory Biological composit. st.uct.res