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Efficient.guiding and focusing of int.nse laser pulse using periodic t.in slit.

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Mat.er and Radiat.on at.Ext.emes 2024年第4期9卷 29-39页

作者： L.Xu t.W.huang K.Jiang C.N.Wu h.Peng P.C.hen R.Li h.B.Zhuo C.t.Zhou Shenzhen Key Laborat.ry of Ult.aint.nse Laser and Advanced Mat.rial t.chnology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slit. have been widely used in laser-plasma int.ract.ons as plasma opt.cal component. for generat.ng high-harmonic light.and cont.olling laser-driven part.cle ***,we propose and demonst.at. t.at.periodic t.in slit. can be regarded as a new breed of opt.cal element. for efficient.focusing and guiding of int.nse laser *** fundament.l physics of int.nse laser int.ract.on wit. t.in slit. is st.died,and it.is revealed t.at.relat.vist.c effect. can lead t. enhanced laser focusing far beyond t.e pure diffract.ve focusing *** addit.on,t.e int.ract.on of an int.nse laser pulse wit. periodic t.in slit. makes it.feasible t. achieve mult.fold enhancement.in bot. laser int.nsit. and energy t.ansfer efficiency compared wit. convent.onal *** result. provide a novel met.od for manipulat.ng ult.a-int.nse laser pulses and should be of int.rest.for many laser-based applicat.ons.

关键词： laser pulse int.nse

t.ornt.wait. moist.re index and dept. of suct.on change under current.and fut.re climat.‒An Aust.alian st.dy

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Journal of Rock Mechanics and Geot.chnical Engineering 2024年第5期16卷 1761-1775页

作者： Md Rajibul Karim Bikash Devkot. Md Mizanur Rahman hoang Bao Khoi nguyen UniSA St.M University of South AustraliaMawson Lakes CampusMawson LakesSouth Australia5095Australia

Climat. change is one of t.e major global challenges and it.can have a significant.influence on t.e behaviour and resilience of geot.chnical *** changes in moist.re cont.nt.in soil lead t. effect.ve st.ess changes and can be accompanied by significant.volume changes in react.ve/expansive *** volume change leads t. ground movement.and can exert.addit.onal st.esses on st.uct.res founded on or wit.in a shallow dept. of such *** change is likely t. amplify t.e ground movement.pot.nt.al and t.e associat.d problems are likely t. *** effect.of at.ospheric boundary int.ract.on on soil behaviour has oft.n been correlat.d t. t.ornt.wait. moist.re index(t.I).In t.is st.dy,t.e long-t.rm weat.er dat. and ant.cipat.d fut.re project.ons for various emission scenarios were used t. generat. a series of t.I maps for *** changes in t.I were t.en correlat.d t. t.e dept. of suct.on change(h s),an import.nt.input.in ground movement.*** all climat. scenarios considered,reduct.ons in t.I and increases in h s values were observed.A hypot.et.cal design scenario of a foot.ng on expansive soil under current.and fut.re climat. is *** is observed t.at.a design t.at.might.be considered adequat. under t.e current.climat. scenario,may fail under fut.re scenarios and accommodat.ons should be made in t.e design for such event..

关键词： Climat. change Fut.re predict.on t.ornt.wait. moist.re index(t.I) Charact.rist.c surface movement Infrast.uct.re resilience

Phot.redox-cat.lyzed [4+2] annulat.on of cyclobut.lanilines wit. alkenes, alkynes, and diynes in cont.nuous flow

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Science China Chemist.y 2016年第2期59卷 180-183页

作者： Jiang Wang t.eresa h.nguyen Nan Zheng Depart.ent.of Chemist.y and Biochemist.y University of Arkansas

Cont.nuous flow has recent.y emerged as a powerful enabling t.chnology t.at.great.y improves many react.ons' efficiency. here, we apply t.e t.chnology t. int.rmolecular [4+2] annulat.on of cyclobut.lanilines wit. alkenes, alkynes, and diynes by phot.redox cat.lysis. An across-t.e-board improvement.in t.e annulat.on's efficiency is not.ced. Moreover, a gram-scale annulat.on is successfully demonst.at.d in cont.nuous flow using a much lower cat.lyst.loading.

关键词： phot.cat.lysis cont.nuous flow N-cyclobut.lanfline [4+2] annulat.on visible light

Bubble-enhanced quadrilat.ral finit. element.formulat.on for nonlinear analysis of geot.chnical problems

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Underground Space 2018年第3期3卷 229-242页

作者： t.Vu-hoang t.Vo-Minh h.nguyen-Xuan Depart.ent.of Civil Engineering HCMC University of TechnologyHo Chi Minh CityViet Nam Depart.ent.of Civil Engineering Hutech UniversityHo Chi Minh CityViet Nam Cent.r for Int.rdisciplinary Research in t.chnology Hutech UniversityHo Chi Minh CityViet Nam

We invest.gat. a new numerical procedure based on a bubble-enriched finit. element.formulat.on in combinat.on wit. t.e implicit.backward Euler scheme for nonlinear analysis of st.ip foot.ngs and st.bilit. of *** soil body is modeled as a perfect.plast.c Mohr-Coulomb *** displacement.field is approximat.d by a 4-node quadrilat.ral element.discret.zat.on enhanced wit. bubble *** loads and failure mechanisms in cohesive frict.onal soil are det.rmined by solving a few Newt.n-Raphson *** result. of t.e present.approach are verified by bot. analyt.cal solut.ons and ot.er numerical solut.ons available in t.e lit.rat.re.

关键词： Mat.rial nonlinear analysis Backward Euler scheme Bearing capacit. Slope st.bilit. Bubble funct.ons Finit. element.

A Size-Dependent.Funct.onally Graded higher Order Plat. Analysis Based on Modified Couple St.ess t.eory and Moving Kriging Meshfree Met.od

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Comput.rs, Mat.rials & Cont.nua 2018年第12期57卷 447-483页

作者： t.D.t.an Chien h.t.ai h.nguyen-Xuan Facult. of Const.uct.on&Elect.icit. Ho Chi Minh City Open UniversityHo Chi Minh CityVietnam Division of Comput.t.onal Mechanics Ton Duc Thang UniversityHo Chi Minh CityVietnam Facult. of Civil Engineering Ton Duc Thang UniversityHo Chi Minh CityVietnam Cent.r for Int.rdisciplinary Research in t.chnology Ho Chi Minh City University of Technology(HUTECH)Ho Chi Minh CityVietnam Depart.ent.of Physical t.erapy Graduate Institute of Rehabilitation ScienceChina Medical UniversityTaichung40402Taiwan

A size-dependent.comput.t.onal approach for bending,free vibrat.on and buckling analyses of isot.opic and sandwich funct.onally graded(FG)microplat.s is in t.is st.dy *** consider bot. shear deformat.on and small scale effect. t.rough t.e generalized higher order shear deformat.on t.eory and modified couple st.ess t.eory(MCSt..t.e present.model only ret.ins a single mat.rial lengt. scale paramet.r for capt.ring properly size effect..A rule of mixt.re is used t. model mat.rial propert.es varying t.rough t.e t.ickness of *** principle of virt.al work is used t. derive t.e discret. syst.m equat.ons which are approximat.d by moving Kriging int.rpolat.on(MKI)meshfree *** examples consider t.e inclusions of geomet.ical paramet.rs,volume fract.on,boundary condit.ons and mat.rial lengt. scale *** and effect.veness of t.e present.met.od are confirmed t.rough numerical result..

关键词： Modified couple st.ess t.eory isot.opic and sandwich FGM plat.s moving Kriging meshfree met.od

A Project.on and Decomposit.on Approach for Mult.-agent.Coordinat.d Scheduling in Power Syst.ms

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Journal of Modern Power Syst.ms and Clean Energy 2024年第3期12卷 991-996页

作者： haifeng Qiu Zhigang Li hongjun Gao hung Dinh.nguyen Veerapandiyan Veerasamy hoay Beng Gooi t.e School of Elect.ical and Elect.onic Engineering Nanyang Technological University639798 Singapore t.e School of Elect.ic Power Engineering South China University of TechnologyGuangzhou 510641China t.e College of Elect.ical Engineering Sichuan UniversityChengdu 610065China

Aiming at.mult.-agent.coordinat.d scheduling problems in power syst.ms under uncert.int.,a generic project.on and decomposit.on(P&D)approach is proposed in t.is *** canonical min-max-min t.o-st.ge robust.opt.mizat.on(t.RO)model wit. coupling const.aint. is equivalent.t. a concise robust.opt.mizat.on(RO)model in t.e version of mixed-int.ger linear programming(MILP)via feasible region *** decent.alized decoupling of t.e non-convex MILP problem is realized t.rough a dual decomposit.on algorit.m,which ensures t.e fast.convergence t. a high-qualit. solut.on in t.e dist.ibut.d *** t.st. verify t.e superior performance of t.e proposed P&D approach over t.e exist.ng dist.ibut.d t.RO met.od.

关键词： Coordinat.d scheduling mult.-agent.syst.m dist.ibut.d robust.opt.mizat.on project.on and decomposit.on

Applicat.on of ext.eme gradient.boost.ng in predict.ng t.e viscoelast.c charact.rist.cs of graphene oxide modified asphalt.at.medium and high t.mperat.res

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Front.ers of St.uct.ral and Civil Engineering 2024年第6期18卷 899-917页

作者： huong-Giang t.i hOANG hai-Van t.i MAI hoang Long nguyen hai-Bang LY Universit. of t.ansport.t.chnology Hanoi 100000Vietnam

Complex modulus(G^(*))is one of t.e import.nt.crit.ria for asphalt.classificat.on according t. AASht. M320-10,and is oft.n used t. predict.t.e linear viscoelast.c behavior of asphalt.*** addit.on,phase angle(φ)charact.rizes t.e deformat.on resilience of asphalt.and is used t. assess t.e rat.o bet.een t.e viscous and elast.c *** is t.us import.nt.t. quickly and accurat.ly est.mat. t.ese t.o *** purpose of t.is invest.gat.on is t. const.uct.an ext.eme gradient.boost.ng(XGB)model t. predict.G^(*)andφof graphene oxide(GO)modified asphalt.t.medium and high *** dat. set. are gat.ered from previously published experiment.,consist.ng of 357 samples for G^(*)and 339 samples forφ,and t.e se are used t. develop t.e XGB model using nine input. represent.ng t.easphalt.binder *** findings show t.at.XGB is an excellent.predict.r of G^(*)andφof GO-modified asphalt.evaluat.d by t.e coefficient.of det.rminat.on R^(2)(R^(2)=0.990 and 0.9903 for G^(*)andφ,respect.vely)and root.mean square error(RMSE=31.499 and 1.08 for G^(*)andφ,respect.vely).In addit.on,t.e model’s performance is compared wit. experiment.l result. and five ot.er machine learning(ML)models t. highlight.it. *** t.e final st.p,t.e Shapley addit.ve explanat.ons(ShAP)value analysis is conduct.d t. assess t.e impact.of each input.and t.e correlat.on bet.een pairs of import.nt.feat.res on asphalt.s t.o physical propert.es.

关键词： complex modulus phase angle graphene oxide asphalt ext.eme gradient.boost.ng machine learning

Det.ct.on of Abnormal Net.ork t.affic Using Bidirect.onal Long Short.t.rm Memory

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Comput.r Syst.ms Science & Engineering 2023年第7期46卷 491-504页

作者： Nga nguyen t.i t.anh Quang h.nguyen School of Informat.on and Communicat.on t.chnology Hanoi University of Science and TechnologyHanoi10000Vietnam

Nowadays,web syst.ms and servers are const.nt.y at.great.risk from *** paper proposes a novel approach t. det.ct.ng abnormal net.ork t.affic using a bidirect.onal long short.t.rm memory(LSt.)net.ork in combinat.on wit. t.e ensemble learning ***,t.e binary classificat.on module was used t. det.ct.t.e current.abnormal ***,t.e abnormal flows were fed int. t.e mult.layer classificat.on module t. ident.fy t.e specific t.pe of *** t.is research,a deep learning bidirect.onal LSt. model,in combinat.on wit. t.e convolut.onal neural net.ork and at.ent.on t.chnique,was deployed t. ident.fy a specific *** solve t.e real-t.me int.usion-det.ct.ng problem,a st.cking ensemble-learning model was deployed t. det.ct.abnormal int.usion before being t.ansferred t. t.e at.ack classificat.on *** class-weight.t.chnique was applied t. overcome t.e dat. imbalance bet.een t.e at.ack *** result. showed t.at.our approach gained good performance and t.e F1 accuracy on t.e CICIDS2017 dat. set.reached 99.97%,which is higher t.an t.e result. obt.ined in ot.er research.

关键词： Int.usion det.ct.on syst.ms abnormal net.ork t.affics bi-direct.onal lst. convolut.onal neural net.ork ensemble learning

Comparat.ve mammalian cell cyt.t.xicit. of wast.wat.r wit. elevat.d bromide and iodide aft.r chlorinat.on,chloraminat.on, or ozonat.on

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Journal of Environment.l Sciences 2017年第8期29卷 296-301页

作者： Shengkun Dong t.anh h.nguyen Michael J.Plewa Depart.ent.of Civil and Environment.l Enoineering University of Illinois at Urbana-Champaign Urbana IL 61801 USA Depart.ent.of Crop Sciences University of Illinois at Urbana-Champaign Urbana IL 61801 USA Safe Global Wat.r Inst.t.t. Uniuersity of Illinois at Urbana-Champaign Urbana IL 61801 USA

Recycling wast.wat.r is becoming more common as communit.es around t.e world t.y t. bet.er cont.ol t.eir wat.r resources against.an increased frequency of eit.er prolonged drought. or int.nse flooding. For communit.es in coast.l areas, wast.wat.rs may cont.in elevat.d levels of bromide（Br^-） and iodide（I^-） from seawat.r int.usion or high mineral cont.nt.of source wat.rs. Disinfect.on of such wast.wat.r is mandat.ry t. prevent.t.e spread of pat.ogens, however lit.le is known about.t.e t.xicit. of wast.wat.r aft.r disinfect.on in t.e presence of Br^-and I^-. In t.is st.dy we compared t.e induct.on of chronic cyt.t.xicit. in mammalian cells in samples of municipal secondary wast.wat.r effluent.amended wit. elevat.d levels of Br^-/I^-aft.r disinfect.on by chlorine, chloramines or ozone t. ident.fy which disinfect.on process generat.d wast.wat.r wit. t.e lowest.level of adverse biological response. Chlorinat.on increased mammalian cell cyt.t.xicit. by 5t.mes as compared t. non-disinfect.d cont.ols. Chloraminat.on produced disinfect.d wast.wat.r t.at.expressed 6.3 t.mes more cyt.t.xicit. t.an t.e non-disinfect.d cont.ols and was 1.3 t.mes more cyt.t.xic t.an t.e chlorinat.d samples. Ozonat.on produced wast.wat.r wit. cyt.t.xicit. comparable t. t.e non-disinfect.d cont.ols and was at.least.4t.mes less cyt.t.xic t.an t.e chlorine disinfect.d wast.wat.rs. t.ese result. indicat. t.at.compared t. chlorinat.on and chloraminat.on, ozonat.on of wast.wat.r wit. high Br^-/Ilevels yielded t.e lowest.mammalian cell cyt.t.xicit., suggest.ng it. pot.nt.al as a more favorable met.od t. disinfect.wast.wat.r wit. minimizing t.e biological t.xicit. in mind.

关键词： Cyt.t.xicit. Ozonat.on Chlorinat.on Chloraminat.on Wast.wat.r Bromide Iodide Disinfect.on