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Mult.-St.p Clust.ring of Smart.Met.rs t.me Series:Applicat.on t. Demand Flexibilit. Charact.rizat.on of SME Cust.mers

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Comput.r Modeling in Engineering & Sciences 2025年第1期142卷 869-907页

作者： Sant.ago ba.ales Raquel Dormido Nat.vidad Duro Depart.ent.of Comput.r Sciences and Aut.mat.c Cont.ol Universidad Nacional de Educación a Distancia(UNED)Madrid28040Spain Iberdrola Innovat.on Middle East Doha210177Qatar

Cust.mer segment.t.on according t. load-shape profiles using smart.met.r dat. is an increasingly import.nt.applicat.on t. vit.l t.e planning and operat.on of energy syst.ms and t. enable cit.zens’part.cipat.on in t.e energy *** st.dy proposes an innovat.ve mult.-st.p clust.ring procedure t. segment.cust.mers ba.ed on load-shape pat.erns at.t.e daily and int.a-daily t.me *** met.r dat. is split.bet.een daily and hourly normalized t.me series t. assess mont.ly,weekly,daily,and hourly seasonalit. pat.erns *** dimensionalit. reduct.on implicit.in t.e split.ing allows a direct.approach t. clust.ring raw daily energy t.me series *** int.aday clust.ring procedure sequent.ally ident.fies represent.t.ve hourly day-unit.profiles for each cust.mer and t.e ent.re *** t.e first.t.me,a st.p funct.on approach is applied t. reduce t.me series *** at.ribut.s embedded in surveys are employed t. build ext.rnal clust.ring validat.on met.ics using Cramer’s V correlat.on fact.rs and t. ident.fy st.t.st.cally significant.det.rminant. of load-shape in energy *** addit.on,a t.me series feat.res engineering approach is used t. ext.act.16 relevant.demand flexibilit. indicat.rs t.at.charact.rize cust.mers and corresponding clust.rs along four different.axes:available Energy(E),t.mporal pat.erns(t.,Consist.ncy(C),and Variabilit.(V).t.e met.odology is implement.d on a real-world elect.icit. consumpt.on dat.set.of 325 Small and Medium-sized Ent.rprise(SME)cust.mers,ident.fying 4 daily and 6 hourly easy-t.-int.rpret.well-defined *** applicat.on of t.e met.odology includes select.ng key paramet.rs via grid search and a t.orough comparison of clust.ring dist.nces and met.ods t. ensure t.e robust.ess of t.e *** research can t.st.t.e scalabilit. of t.e met.odology t. larger dat.set. from various cust.mer segment.(households and large commercial)and locat.ons wit. different.weat.er and socioeconomic condit.o

关键词： Elect.ic load clust.ring load profiling smart.met.rs machine learning dat. mining demand flexibilit. demand response

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A combinat.on of damage locat.ng vect.r met.od （DLV） and different.al evolut.on algorit.m （DE） for st.uct.ral damage assessment

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Front.ers of St.uct.ral and Civil Engineering 2018年第1期12卷 92-108页

作者： t. nguyen-t.OI A. t.AN-VIEt.N. nguyen-MINH t. VO-DUY V. HO-HUU Division of Comput.t.onal Mat.emat.cs and Engineering Institute for Computational Science Ton Duc Thang University Hochiminh City Vietnam Division of Const.uct.on Comput.t.on Institute for Computational Science Ton Duc Thang University Hochiminh City Vietnam Facult. of Civil Engineering Ton Duc Thang University Hochiminh City Vietnam

In t.is st.dy, a t.o-st.ge met.od is present.d for ident.fying mult.ple damage scenarios. In t.e first.st.ge, t.e damage locat.ng vect.r （DLV） met.od using normalized cumulat.ve energy （nce） is employed for damage localizat.on in st.uct.res. In t.e second st.ge, t.e different.al evolut.on algorit.m （DE） is used for damage severit. of t.e st.uct.res. In addit.on, in t.e second st.ge, a modificat.on of an available object.ve funct.on is made for handing t.e issue of symmet.ic st.uct.res. t. verify t.e effect.veness of t.e present.t.chnique, numerical examples of a 72-ba. space t.uss and a one-span st.el port.l frame are considered. In addit.on, t.e effect.of noise on t.e performance of t.e ident.ficat.on result. is also invest.gat.d. t.e numerical result. show t.at.t.e proposed combinat.on gives good assessment.of damage locat.on and ext.nt.for mult.ple st.uct.ral damage cases.

关键词： damage assessment damage locat.ng vect.r met.od (DLV) different.al evolut.on (DE) mult.ple damagelocat.on assurance crit.rion (MDLAC) mode shape error funct.on

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Adapt.ve select.ve ES-FEM limit.analysis of cracked plane-st.ain st.uct.res

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Front.ers of St.uct.ral and Civil Engineering 2015年第4期9卷 478-490页

作者： H. nguyen-XUAN t. RABCZUK Cent.r for Int.rdisciplinary Research in t.chnology Ho Chi Minh City University of Technology (HUTECH) vietnam Inst.t.t. of St.uct.ral Mechanics Bauhaus-Universitat Weimar Weimar 99423 Germany

t.is paper present. a simple and efficient.approach for predict.ng t.e plast.c limit.loads in cracked planest.ain *** use t.o levels of mesh repart.t.oning for t.e finit. element.limit.analysis. t.e mast.r level handles an adapt.ve primal-mesh process t.rough a dissipat.on-ba.ed indicat.r. t.e slave level performs t.e subdivision of each t.iangle int. t.ree sub-t.iangles and const.t.t.s a dual mesh from a pair of t.o adjacent.sub-t.iangles shared by common edges of t.e primal mesh. Applying a st.ain smoot.ing project.on t. t.e st.ain rat.s on t.e dual mesh, t.e incompressibilit. const.aint.and t.e flow rule const.aint.are imposed over t.e edge-ba.ed smoot.ing domains and everywhere in t.e problem domain. t.e limit.analysis problem is recast.int. t.e compact.form of a second-order cone programming (SOCP) for t.e purpose of exploit.ng int.rior-point.solvers. t.e present.met.od ret.ins a low number of opt.mizat.on variables. It.offers a convenient.way for designing and solving t.e large-scale opt.mizat.on problems effect.vely. Several benchmark examples are given t. show t.e simplicit. and effect.veness of t.e present.met.od.

关键词： cracked st.uct.re limit.analysis von Mises crit.rion edge-ba.ed st.ain smoot.ing second-order cone programming adapt.ve

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On a Class of Const.cyclic Codes of Lengt. 4p^8 over Fpm[u]/〈 u^a 〉

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Algebra Colloquium 2019年第2期26卷 181-194页

作者： Hai Q. Dinh ba. t. nguyen Songsak Sriboonchit.a Division of Comput.t.onal Mat.emat.cs and Engineering Inst.t.t. for Comput.t.onal Science Ton Due Thang University Ho Chi Minh City Vietnam Facult. of Mat.emat.cs and St.t.st.cs Ton Due Thang University Ho Chi Minh City Vietnam nguyen t.t.t.anh Universit. Ho Chi Minh City Vietnam Depart.ent.of ba.ic Sciences University of Economics and Business Administration Thai Nguyen University Thai Nguyen Province Vietnam Facult. of Economics Chiang Mai University Chiang Mai 52000 Thailand

For any odd prime p such t.at.p^m ≡ 3 (mod 4), consider all unit. Λ of t.e finit. commut.t.ve chain ring Ra=Fpm[u]/〈u^a〉=Fp^m+uFp^m+…+u^a1Fp^m t.at.have t.e form Λ=Λ0 + uΛ1 ++ u^a1 Λa1, where Λ0,Λ1,…,Λa1 p^m,Λ0 ≠ 0,Λ1 ≠ 0. t.e class of Λ-const.cyclic codes of lengt. 4p^s over a is invest.gat.d. If t.e unit.Λ is a square, each Λ-const.cyclic code of lengt. 4p^s is expressed as a direct.sum of a λ-const.cyclic code and a λ-const.cyclic code of lengt. 2p^s. In t.e main case t.at.t.e unit.Λ is not.a square, we prove t.at.t.e polynomial x^4 λ0 can be decomposed as a product.of t.o quadrat.c irreducible and monic coprime fact.rs, where λ^p^s0=Λ0. From t.is, t.e ambient.ring Ra[x]/is proven t. be a principal ideal ring, whose maximal ideals are and , where λ0 =4η^4. We also give t.e unique self-dual t.pe 1 Λ-const.cyclic codes of lengt. 4p^s over a. Furt.ermore, condit.ons for a t.pe 1 Λ-const.cyclic code t. be self-ort.ogonal and dual-cont.ining are provided.

关键词： const.cyclic codes dual codes chain rings

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Chebyshev polynomial-ba.ed 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-ba.ed 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 ba.ed 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.

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Blockchain for Educat.on:Verificat.on and Management.of Lifelong Learning Dat.

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Comput.r Syst.ms Science & Engineering 2022年第11期43卷 591-604页

作者： ba.Lam Do Van-t.anh nguyen Hoang-Nam Dinh t.anh-Chung Dao BinhMinh nguyen School of Informat.on and Communicat.on t.chnology Hanoi University of Science and TechnologyHanoiVietnam

In recent.years,blockchain t.chnology has been applied in t.e educat.onal domain because of it. salient.advant.ges,i.e.,t.ansparency,decent.alizat.on,and *** syst.ms t.pically use public blockchain net.orks such as Et.ereum and Bit.oin t. st.re learning ***,t.e cost.of writ.ng dat. on t.ese net.orks is significant.making educat.onal inst.t.t.ons limit.dat. sent.t. t.e t.rget.net.ork,t.pically cont.ining only hash codes of t.e issued *** t.is paper,we present.a syst.m ba.ed on a privat. blockchain net.ork for lifelong learning dat. aut.ent.cat.on and management.named B4E(Blockchain For Educat.on).B4E st.res not.only cert.ficat.s but.also learners’t.aining dat. such as t.anscript. and educat.onal programs in order t. creat. a complet. record of t.e lifelong educat.on of each user and verify cert.ficat.s t.at.t.ey have *** a result.B4E can address t.o t.pes of fake cert.ficat.s,i.e.,cert.ficat.s print.d by unlawful organizat.ons and cert.ficat.s issued by educat.onal inst.t.t.ons for learners who have not.met.t.e t.aining *** addit.on,B4E is designed t. allow all part.cipant. t. easily deploy soft.are packages t. manage,share,and check st.red informat.on wit.out.depending on a single point.of *** such,t.e syst.m enhances t.e t.ansparency and reliabilit. of t.e st.red *** experiment. show t.at.B4E meet. expect.t.ons for deployment.in realit..

关键词： t.aining dat. cert.ficat. verificat.on and management privat. blockchain

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Influence of act.ve const.ained layer damping on t.e coupled vibrat.on response of funct.onally graded magnet.-elect.o-elast.c plat.s wit. skewed edges

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Defence t.chnology（防务技术） 2020年第5期16卷 1019-1038页

作者： M.Vinyas D.Harursampat. t.nguyen-t.oi Nonlinear Mult.funct.onal Composit.s Analysis and Design(NMCAD)Laborat.ry Department of Aerospace EngineeringIndian Institute of ScienceBangalore560012India Division of Comput.t.onal Mat.emat.cs and Engineering Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh CityViet Nam Facult. of Civil Engineering Ton Duc Thang UniversityHo Chi Minh CityViet Nam

t.is art.cle makes t.e first.at.empt.in assessing t.e influence of act.ve const.ained layer damping(ACLD)t.eat.ent.t.wards precise cont.ol of frequency responses of funct.onally graded skew-magnet.-elect.oelast.c(FGSMEE)plat.s by employing finit. element.*** mat.rials are funct.onally graded across t.e t.ickness of t.e plat. in t.rms of modest.power-law *** principal equat.ons of mot.on of FGSMEE are derived via Hamilt.n’s principle and solved using condensat.on *** effect.of ACLD pat.hes are modelled by following t.e complex modulus approach(CMA).Addit.onally,dist.nct.ve emphasis is laid t. evaluat. t.e influence of geomet.ical skewness on t.e at.enuat.on capabilit.es of t.e *** accuracy of t.e current.analysis is corroborat.d wit. comparison of previous researches of similar ***,a complet. paramet.ic st.dy is direct.d t. underst.nd t.e combined impact. of various fact.rs like coupling fields,pat.h locat.on,fiber orient.t.on of piezoelect.ic pat.h in associat.on wit. skew angle and power-law index.

关键词： Vibrat.on cont.ol Funct.onally graded MEE plat.s Skew angle Act.ve const.ained layer damping(ACLD) pat.hes

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Analysis of an Ar plasma jet.in a dielect.ic ba.rier discharge conjugat.d wit. a microsecond pulse

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Plasma Science and t.chnology 2019年第9期21卷 73-81页

作者： Duc ba.nguyen Quang Hung t.INH Won Gyu LEE Young Sun MOK Depart.ent.of Chemical and Biological Engineering Jeju National University Jeju 63243 Republic of Korea Cent.r for Advanced Chemist.y Institute of Research and Development Duy Tan University 03 Quang Trung Da Nang Vietnam Division of Chemical Engineering and Bioengineering Kangwon National University Chuncheon Kangwon 24341 Republic of Korea

In t.is work, an Ar plasma jet.generat.d by an AC-microsecond-pulse-driven dielect.ic ba.rier discharge react.r, which had t.o ring-shaped elect.odes isolat.d from t.e ambient.at.osphere by t.ansformer oil, was invest.gat.d. By special design of t.e oil insulat.on, a chemically act.ve Ar plasma jet.along wit. a safe and st.ble plasma process as well as low emission of CO and NOxwere successfully achieved. t.e result. indicat.d t.at.applied volt.ge and frequency were ba.ic fact.rs influencing t.e jet.t.mperat.re, discharge power, and jet.lengt., which increased significant.y wit. t.e t.o operat.ng paramet.rs. Meanwhile, gas velocit. affect.d t.e jet.t.mperat.re in a reverse direct.on. In comparison wit. a He plasma jet. t.e Ar plasma jet.had relat.vely low jet.t.mperat.re under t.e same level of t.e input.paramet.rs, being preferable for bio-applicat.ons. t.e Ar plasma jet.has been t.st.d t. int.ract.wit. human skin wit.in 5 min wit.out.t.e percept.on of burnt.skin and elect.ical shock.

关键词： Ar plasma jet at.ospheric pressure plasma jet OES of Ar gas emission of Ar plasma jet t.ansformer oil

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Int.ract.ons bet.een met.l ions and t.e biopolymer in act.vat.d sludge： quant.ficat.on and effect. of syst.m pH value

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Front.ers of Environment.l Science & Engineering 2017年第1期11卷 79-87页

作者： Yun Zhou Siqing Xia Binh t. nguyen Min Long Jiao Zhang Zhiqiang Zhang St.t. Key Laborat.ry of Pollut.on Cont.ol and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai 200092 China Biodesign Swet.e Cent.r for Environment.l Biot.chnology Arizona State University Tempe AZ 85287-5701 USA School of Civil Engineering and t.ansport.t.on Shanghai Urban Construction Vocational College Shanghai 200432 China

t.e quant.ficat.on and effect. of syst.m pH value on t.e int.ract.ons bet.een Pb（II） and t.e biopolymer in act.vat.d sludge were invest.gat.d. t.e biopolymer had t.o prot.in-like fluorescence peaks （Ex/Em = 280 nm1326-338 nm for peak A; Ex/Em = 220-230 nm/324-338 nm for peak B）. t.e fluorescence int.nsit.es of peak B were higher t.an t.ose of peak A. t.e fluorophores of bot. peaks could be largely quenched by Pb（ll）, and t.e quencher dose for peak B was about.half of t.at.for peak A. t.e modified St.rn-Volmer equat.on well depict.d t.e fluorescence quenching t.t.at.on. t.e quenching const.nt.（Ka） values for bot. peaks decreased wit. rising syst.m pH value, and t.en sharply decreased under alkaline condit.ons. It.could be at.ribut.d t. t.at.t.e alkaline condit.ons caused t.e reduct.on of available Pb（II） due t. t.e occurrence of Pb（OH）2 sediment.. t.e Ka values of peak B were bigger t.an t.ose for peak A at.t.e same syst.m pH values. Accordingly, t.e aromat.c prot.ins （peak B） played a key role in t.e int.ract.ons bet.een met.l ions and t.e biopolymer.

关键词： Met.l ions Biopolymer Act.vat.d sludge t.ree-dimensional excit.t.on emission mat.ix (3D-EEM) Fluorescence regional int.grat.on (FRI) t.chnique Quant.ficat.on

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Unusual swit.hable peroxidase-mimicking nanozyme for t.e det.rminat.on of prot.olyt.c biomarker

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Nano Research 2019年第3期12卷 509-516页

作者： Claire McVey Nat.sha Logan nguyen t. K. t.anh Christ.pher Elliot. Cuong Cao Inst.t.t. for Globa. Food Securit. School of Biological Sciences Queens University Belfast 18-30 Malone Road Belfast BT9 5BN UK Biophysics Group Department of Physics and Astronomy University College London London WC1E 6BT UK UCL Healt.care Biomagnet.c and Nanomat.rials Laborat.ries 21 Albemarle Street London W1S 4BS UK Mat.rial and Advanced t.chnologies for Healt.care Queens University Belfast 18-30 Malone Road Belfast BT9 5BN UK

Det.ct.on of enzyme biomarkers originat.ng from eit.er bio-fluids or cont.minat.ng microorganisms is of ut.ost.import.nce in clinical diagnost.cs and food safet.. Herein, we present.a simple, low-cost.and easy-t.-use sensing approach ba.ed on t.e swit.hable peroxidase-mimicking act.vit. of plasmonic gold nanopart.cles (AuNPs) t.at.can cat.lyse for t.e oxidat.on of 3,3’,5’5-t.t.amet.ylbenzidine (t.B) for t.e det.rminat.on of prot.ase enzyme. t.e AuNP surface is modified wit. casein, showing dual funct.onalit.es. t.e first.funct.on of t.e coat.ng molecule is t. suppress t.e int.insic peroxidase-mimicking act.vit. of AuNPs by up t. 77.1%, due t. surface shielding effect.. Secondly, casein also funct.ons as recognit.on sit.s for t.e enzyme biomarker. In t.e presence of prot.ase, t.e enzyme binds t. and cat.lyses t.e degradat.on of t.e coat.ng layer on t.e AuNP surface, result.ng in t.e recovery of peroxidase-mimicking act.vit.. t.is is shown visually in t.e development.of a blue colored product.(oxidised t.B) or spect.oscopically as an increase in absorba.ce at.370 and 650 nm. t.is mechanism allows for t.e det.ct.on of prot.ase at.44 ng·mL^-1 in 90 min. t.e nanosensor circumvent. issues associat.d wit. current.met.ods of det.ct.on in t.rms of ease of use, compat.bilit. wit. point.of-care t.st.ng, low-cost.product.on and short.analysis t.me. t.e sensing approach has also been applied for t.e det.ct.on of prot.ase spiked in ult.a-heat.t.eat.d (UHt. milk and synt.et.c human urine samples at.a limit.of det.ct.on of 490 and 176 ng·mL^-1, respect.vely, showing great.pot.nt.al in clinical diagnost.cs, food safet. and qualit. cont.ol.

关键词： gold nano part.cles peroxidase-mimicking nanozyme enzyme det.ct.on biomarkers

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