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RoGRUT: a.Hybrid Deep Lea.ning Model for Detecting Power Tra.ping in Sma.t Grids

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Computers, Ma.eria.s & Continua 2024年第5期79卷 3175-3192页

作者： Fa.a. Moha.ma. Sa.d a.-ahmadi Ja.a. a.-Muhta.i Center of Excellence in Informa.ion a.sura.ce(CoEIa. King Saud UniversityRiyadh11543Saudi Arabia College of Computer&Informa.ion Sciences King Saud UniversityRiyadh11543Saudi Arabia

Electricity theft is a.widesprea. non-technica. issue tha. ha. a.nega.ive impa.t on both power grids a.d electricity *** hinders the economic growth of utility compa.ies,poses electrica. risks,a.d impa.ts the high energy costs borne by *** development of sma.t grids is crucia. for the identifica.ion of power theft since these systems crea.e enormous a.ounts of da.a.including informa.ion on client consumption,which ma. be used to identify electricity theft using ma.hine lea.ning a.d deep lea.ning ***,there a.so exist different solutions such a. ha.dwa.e-ba.ed solutions to detect electricity theft tha. ma. require huma. resources a.d expensive ***-ba.ed solutions a.e presented in the litera.ure to identify electricity theft but due to the dimensiona.ity curse,cla.s imba.a.ce issue a.d improper hyper-pa.a.eter tuning of such models lea. to poor *** this resea.ch,a.hybrid deep lea.ning model a.brevia.ed a. RoGRUT is proposed to detect electricity theft a. a.a.icious a.d non-ma.icious *** key steps of the RoGRUT a.e da.a.preprocessing tha. covers the problem of cla.s imba.a.ce,fea.ure extra.tion a.d fina. theft *** a.va.ced-level models like RoBERTa.is used to a.dress the curse of dimensiona.ity issue,the nea. miss for cla.s imba.a.ce,a.d tra.sfer lea.ning for *** effectiveness of the RoGRUTis eva.ua.ed using the da.a.et froma.tua. sma.tmeters.a.significa.t number of simula.ions demonstra.e tha.,when compa.ed to its competitors,the RoGRUT a.hieves the best cla.sifica.ion *** performa.ce eva.ua.ion of the proposed model revea.ed exempla.y results a.ross *** a.cura.y a.hieved wa. 88%,with precision a. a. impressive 86%a.d reca.l rea.hing 84%.The F1-Score,a.mea.ure of overa.l performa.ce,stood a. 85%.Furthermore,themodel exhibited a.noteworthyMa.thew correla.ion coefficient of 78%a.d excelled with a. a.ea.under the curve of 91%.

关键词： Electricity theft sma.t grid RoBERTa GRU tra.sfer lea.ning

Spa.iotempora. la.dsca.e pa.tern cha.ges a.d their effects on la.d surfa.e tempera.ure in greenbelt with semi-a.id clima.e:a.ca.e study of the Erbil City,Ira.

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Journa. of a.id La.d 2024年第9期16卷 1214-1231页

作者： suzan ISMa.L Ha.id Ma.IKI Depa.tment of a.chitecture College of EngineeringSalahaddin UniversityErbil 44002Iraq

Urba. expa.sion of cities ha. ca.sed cha.ges in la.d use a.d la.d cover(LULC)in a.dition to tra.sforma.ions in the spa.ia. cha.a.teristics of la.dsca.e *** a.tera.ions ha.e genera.ed hea. isla.ds a.d rise of la.d surfa.e tempera.ure(LST),which consequently ha.e ca.sed a.va.iety of environmenta. issues a.d threa.ed the susta.na.le development of urba. *** a.e employed a. a. urba. pla.ning conta.nment policy to regula.e urba. expa.sion,sa.egua.d na.ura. open spa.es,a.d serve a.a.ta.ion a.d mitiga.ion *** they a.e rega.ded a. a.powerful mea.ure for enha.cing urba. environmenta. *** the fa.t tha.,the rela.ion between la.dsca.e structure cha.ge a.d va.ia.ion of LST ha. been exa.ined thoroughly in ma.y studies,but there is a.limita.ion concerning this rela.ion in semi-a.id clima.e a.d in greenbelts a. well,with the la.king of comprehensive resea.ch combing both ***,this study investiga.ed the spa.iotempora. cha.ges of la.dsca.e pa.tern of LULC a.d their rela.ionship with va.ia.ion of LST within a. inner greenbelt in the semi-a.id Erbil City of northern *** study utilized remote sensing da.a.to retrieve LST,cla.sified LULC,a.d ca.cula.ed la.dsca.e metrics for a.a.yzing spa.ia. cha.ges during the study *** results indica.ed tha. both composition a.d configura.ion of LULC ha. a. impa.t on the va.ia.ion of LST in the study *** Pea.son's correla.ion showed the significa.t effect of Vegeta.ion 1 type(VH),cultiva.ed la.d(CU),a.d ba.e soil(BS)on LST,a. increa.e of LST wa. rela.ed to the decrea.e of VH a.d the increa.es of CU a.d BS,while,neither Vegeta.ion 2 type(VL)nor built-up(BU)ha. a.y ***,the spa.ia. distribution of LULC a.so exhibited significa.t effects on LST,a. LST wa. strongly correla.ed with la.dsca.e indices for VH,CU,a.d ***,for BU,only a.grega.ion index metric a.fected LST,while none of VL metrics ha. a.*** study provides insights for la.dsca.e pla

关键词： la.d use a.d la.d cover cha.ge la.dsca.e pa.tern la.d surfa.e tempera.ure greenbelt remote sensing

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Model Reference a.a.tive Controller for Simulta.eous Volta.e a.d Frequency Restora.ion of a.tonomous a. Microgrids

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Journa. of Modern Power Systems a.d Clea. Energy 2024年第4期12卷 1194-1202页

作者： Fa.a.na. ahmadi Ya.da. Ba.ma.i Ha.sa. Bevra.i Depa.tment of Electrica. Engineering University of KurdistanSanandajIran

In a. a.tonomous droop-ba.ed microgrid,the sys-tem volta.e a.d frequency(Va.)a.e subject to devia.ions a. loa. *** the existence of va.ious control methods a.med a. correcting system frequency devia.ions a. the second-a.y control level without a.y communica.ion network,the cha.-lenges a.socia.ed with these methods a.d their a.ilities to simul-ta.eously restore microgrid Va. ha.e not been fully *** this pa.er,a.multi-input multi-output(MIMO)model ref-erence a.a.tive controller(MRa.)is proposed to a.hieve Va. restora.ion while a.cura.e power sha.ing a.ong distributed genera.ors(DGs)is *** proposed MRa.,without a.y communica.ion network,is designed ba.ed on two meth-ods:droop-ba.ed a.d inertia.ba.ed *** the microgrid,the suggested design procedure is sta.ted by defining a.model reference in which the control objectives,such a. the desired settling time,the ma.imum tolera.le overshoot,a.d stea.y-sta.e error,a.e ***,a.feedba.k-feedforwa.d con-troller is esta.lished,of which the ga.ns a.e a.a.tively tuned by some rules derived from the Lya.unov sta.ility *** some simula.ions in Ma.La./SimPowerSystem Tool-box,the proposed MRa. demonstra.es sa.isfa.tory perfor-ma.ce.

关键词： a. microgid communica.ion-free seconda.y control droop-ba.ed method inertia.ba.ed method model reference a.a.tive controller(MRa.) simulta.eous volta.e a.d frequency restora.ion

Numerica. study of the nea.-wa.l vortica. structures in pa.ticle-la.en turbulent flow by a.new vortex identifica.ion method-Liutex

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Journa. of Hydrodyna.ics 2024年第1期36卷 53-60页

作者： Fa.id Rousta.Gooda.z ahmadi Ba.da. Lessa.i Cha.qun Liu Depa.tment of Mecha.ica. a.d a.rospa.e Engineering Clarkson UniversityPotsdamNYUSA Mecha.ica. Engineering a.d Engineering Science The University of North Carolina at CharlotteNCUSA Depa.tment of Ma.hema.ics University of Texas at ArlingtonArlingtonTXUSA

This study investiga.es turbulent pa.ticle-la.en cha.nel flows using direct numerica. simula.ions employing the Euleria.-La.ra.gia. method.a.two-wa. coupling a.proa.h is a.opted to explore the mutua. intera.tion between pa.ticles a.d fluid *** considered ca.es include flow with pa.ticle Stokes number va.ying from St=2 up to St=100 while ma.nta.ning a.consta.t Reynolds number of Reτ=180 a.ross a.l ca.es.a.novel vortex identifica.ion method,Liutex(Rortex),is employed to a.sess its effica.y in ca.turing nea.-wa.l turbulent coherent structures a.d their intera.tions with *** Liutex method provides va.ua.le informa.ion on vortex strength a.d vectors a. ea.h loca.ion,ena.ling a.deta.led exa.ina.ion of the complex intera.tion between fluid a.d pa.ticula.e *** widely a.knowledged,the interpla. between clockwise a.d counterclockwise vortices in the nea.-wa.l region gives rise to low-speed strea.s a.ong the *** low-speed strea.s serve a. preferentia. zones for pa.ticle concentra.ion,depending upon the pa.ticle Stokes *** is shown tha. the Liutex method ca. ca.ture these vortices a.d identify the loca.ion of low-speed ***,it is observed tha. the pa.ticle Stokes number(size)significa.tly a.fects both the strength of these vortices a.d the strea.y structure exhibited by ***,a.qua.tita.ive a.a.ysis of pa.ticle beha.ior in the nea.-wa.l region a.d the forma.ion of elonga.ed pa.ticle lines wa. ca.ried *** involved exa.ining the a.era.e fluid strea.wise velocity fluctua.ions a. pa.ticle loca.ions,a.era.e pa.ticle concentra.ion,a.d the norma. velocity of pa.ticles for ea.h set of pa.ticle Stokes *** investiga.ion revea.s the intrica.e interpla. between pa.ticles a.d nea.-wa.l structures a.d the significa.t influence of pa.ticles Stokes *** study contributes to a.deeper understa.ding of turbulent pa.ticle-la.en cha.nel flow dyna.ics.

关键词： Turbulent cha.nel flow pa.ticle-la.en flow direct numerica. simula.ion(DNS) Euleria.-La.ra.gia. vortex identifica.ion turbulence coherent structures Liutex

Specia. Issue:Interna.iona. Conference on Susta.na.le Energy Sources,Technologies a.d Systems 2023(ICSESTS-2023)

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Clea. Energy 2024年第3期8卷 136-137页

作者： Ra.inder Kuma. Moha.ma. Hossein ahmadi School of Mecha.ica. Engineering Lovely Professional UniversityPhagwra-144411PunjabIndia Fa.ulty of Mecha.ica. Engineering Shahrood University of TechnologyShahroodIran

The Division of Resea.ch a.d Development a. Lovely Professiona. University,Punja. orga.ized the Interna.iona. Conference on Susta.na.le Energy Sources,Technologies a.d Systems 2023(ICSESTS-2023),which took pla.e on 3-... 详细信息

关键词： sola. energy stora.e wind energy geotherma. hydropower biofuels ba.teries

Studying the effect of surfa.ta.t a.sisted low-sa.inity wa.er flooding on cla.-rich sa.dstones

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Petroleum 2024年第2期10卷 306-318页

作者： Sa.ed Khezerloo-ye a.hda. a.ireza.Ka.emi Moha.ma. ahmadi Depa.tment of Petroleum Engineering Amirkabir University of Technology(AUT)TehranIran Depa.tment of Petroleum a.d Chemica. Engineering College of EngineeringSultan Qaboos UniversityMuscatOman

Sa.dstone reservoirs often conta.n cla. pa.ticles tha. ca. ca.se da.a.e a.d reduce permea.ility during low-sa.inity wa.er *** this study,the effect of surfa.ta.ts on fine migra.ion in cla.-rich sa.dstones a.d its impa.t on oil recovery wa. ***,the impa.t of surfa.ta.ts on interpa.ticle forces in fine-ma.rix,fine-fine,a.d oil-ma.rix systems wa. *** results showed tha. both CTa.(cetyltrimethyl a.monium bromide)a.d QS(quilla.a.sa.onin)ca.se EDL compa.tion,wea.ening the repulsive ***,SDS(sodium dodecyl sulfa.e)a.d TX(triton X-100)do not a.fect the ***,the effect of surfa.ta.ts on IFT reduction a.d wetta.ility a.tera.ion wa. experimenta.ly *** surfa.ta.ts reduced IFT due to the surfa.e excessive concentra.ion *** wetta.ility a.tera.ion experiment illustra.ed tha. a.though QS a.d CTa. compa.t EDL a.ound oil a.d ma.rix pa.ticles lea.ing to a.tra.tion force a.gmenta.ion,they both a.ter wetta.ility through a.sorption on ma.rix a.d ca.boxylic groups present in crude oil,*** a.ueous solutions were then injected into va.ious cla.-rich sa.dstone sa.pa.ks,which resulted in increa.ed oil ***,the mecha.isms lea.ing to enha.ced oil recovery va.iedby surfa.ta.t *** increa.ed recovery by 10%through IFT reduction a.d wetta.ility a.tera.ion,while SDS a.d TX increa.ed recovery by 12%a.d 9%,respectively,through wetta.ility a.tera.ion a.d extreme fine *** contra.t,pa.tia. fine migra.ion in the QS flooding experiment rea.hed a.recovery increa.e of 18%.Permea.ility trends through experiments were a.so *** CTa. injection,permea.ility did not reduce,while QS a.ueous solution reduced rock permea.ility to 5 m *** a.d TX reduced the ma.nitude of permea.ility to 2 m *** conclusion,this study demonstra.es tha. surfa.ta.ts ca. effectively improve oil recovery in cla.-rich sa.dstones by a.tering the interpa.ticle forces,reducing IFT,a.d cha.ging *** results

关键词： Surfa.ta.t flooding Sma.t wa.er Fine migra.ion Recovery fa.tor

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Molecula. insights into oil deta.hment from hydrophobic qua.tz surfa.es in cla.-hosted na.opores during stea.-surfa.ta.t co-injection

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Petroleum Science 2024年第4期21卷 2457-2468页

作者： Ben-Jie-Ming Liu Xua.-Tong Lei Moha.ma.a.i ahmadi Zha.gxin Chen Depa.tment of Chemica. a.d Petroleum Engineering University of Calgary Ea.tern Institute of Technology

Therma. recovery techniques for producing oil sa.ds ha.e substa.tia. environmenta. impa.ts. Surfa.ta.ts ca. efficiently improve therma. bitumen recovery a.d reduce the required a.ount of stea.. Such a.technique requires solid knowledge a.out the intera.tion mecha.ism between surfa.ta.ts, bitumen,wa.er, a.d rock a. the na.osca.e level. In pa.ticula., oil sa.ds ores ha.e extremely complex minera.ogy a. they conta.n ma.y cla. minera.s(montmorillonite, illite, ka.linite). In this study, molecula. dyna.ics simula.ion is ca.ried out to elucida.e the unclea. mecha.isms of cla. minera.s contributing to the bitumen recovery under a.stea.-a.ionic surfa.ta.t co-injection process. We found tha. the cla. content significa.tly influenced a. oil deta.hment process from hydrophobic qua.tz surfa.es. Results revea. tha. the presence of montmorillonite, illite, a.d the siloxa.e surfa.e of ka.linite in na.opores ca. enha.ce the oil deta.hment process from the hydrophobic surfa.es beca.se surfa.ta.t molecules ha.e a.stronger tendency to intera.t with bitumen a.d qua.tz. Conversely, the gibbsite surfa.es of ka.linite curb the oil deta.hment process. Through intera.tion energy a.a.ysis, the siloxa.e surfa.es of ka.linite result in the most stra.ghtforwa.d oil deta.hment process. In a.dition, we found tha. the cla. type presented in na.opores a.fected the wetta.ility of the qua.tz surfa.es. The qua.tz surfa.es a.socia.ed with the gibbsite surfa.es of ka.linite show the strongest hydrophilicity. By compa.ing previous experimenta. findings with the results of molecula. dyna.ics(MD) simula.ions, we observed consistent wetting cha.a.teristics. This a.ignment serves to va.ida.e the relia.ility of the simula.ion outcomes. The outcome of this pa.er ma.es up for the la.k of knowledge of a.surfa.ta.t-a.sisted bitumen recovery process a.d provides insights for further in-situ bitumen production engineering designs.

关键词： Cla. minera.s Bitumen Conta.t a.gle Intera.tion energy Surfa.ta.t Molecula. dyna.ics

Ga.‐MD:a.myoca.ditis detection using multi‐cha.nel convolutiona. neura. networks a.d genera.ive a.versa.ia. network‐ba.ed da.a.a.gmenta.ion

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Ca.I Tra.sa.tions on Intelligence Technology 2024年第4期9卷 866-878页

作者： Henga.e ahmadi Golila.z a.ireza.a.a.ba. Rooha.la. a.iza.ehsa.i Jua. Ma.uel Gorriz Depa.tment of Medica. Ra.ia.ion Engineering Faculty of EngineeringLahijan BranchIslamic Azad UniversityLahijanIran Depa.tment of Medica. Ra.ia.ion Engineering Lahijan BranchIslamic Azad UniversityLahijanIran Institute for Intelligent Systems Resea.ch a.d Innova.ion(IISRI) Deakin UniversityWaurn PondsVictoriaAustralia Da.a.Science a.d Computa.iona. Intelligence Institute University of GranadaGranadaSpain

Myoca.ditis is a.significa.t public hea.th concern beca.se of its potentia. to ca.se hea.t fa.lure a.d sudden *** sta.da.d inva.ive dia.nostic method,endomyoca.dia. bi-opsy,is typica.ly reserved for ca.es with severe complica.ions,limiting its widesprea. ***,non‐inva.ive ca.dia. ma.netic resona.ce(CMR)ima.ing presents a.promising a.terna.ive for detecting a.d monitoring myoca.ditis,beca.se of its high signa. contra.t tha. revea.s myoca.dia. *** a.sist medica. professiona.s via.a.tificia. intelligence,the a.thors introduce genera.ive a.versa.ia. networks‐multi discrimina.or(Ga.‐MD),a.deep lea.ning model tha. uses bina.y cla.sifica.ion to dia.nose myoca.ditis from CMR *** a.proa.h employs a.series of convolutiona. neura. networks(CNNs)tha. extra.t a.d combine fea.ure vectors for a.cura.e *** a.thors suggest a.novel technique for improving the cla.sifica.ion precision of *** genera.ive a.versa.ia. networks(Ga.s)to crea.e synthetic ima.es for da.a.a.gmenta.ion,the a.thors a.dress cha.lenges such a. mode colla.se a.d unsta.le *** a.reconstruction loss into the Ga. loss function requires the genera.or to produce ima.es reflecting the discrimina.or fea.ures,thus enha.cing the genera.ed ima.es'qua.ity to more a.cura.ely replica.e a.thentic da.a.***,combining this loss function with other reg-ula.isa.ion methods,such a. gra.ient pena.ty,ha. proven to further improve the perfor-ma.ce of diverse Ga. models.a.significa.t cha.lenge in myoca.ditis dia.nosis is the imba.a.ce of cla.sifica.ion,where one cla.s domina.es over the *** mitiga.e this,the a.thors introduce a.foca. loss‐ba.ed tra.ning method tha. effectively tra.ns the model on the minority cla.s *** Ga.‐MD a.proa.h,eva.ua.ed on the Z‐a.iza.eh Sa.i myoca.ditis da.a.et,a.hieves superior results(F‐mea.ure 86.2%;geometric mea. 91.0%)compa.ed with other deep lea.ning models a.d tra.itiona. ma.hine lea.ning methods.

关键词： 2‐D 3‐D

Recent a.va.ces in heterogeneous ca.a.ysis of sola.-driven ca.bon dioxide conversion

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Journa. of Environmenta. Sciences 2024年第6期140卷 165-182页

作者： Jun Xu Fa.za.eh a.a.pour Rogha.a.i Ying Luo Va.id ahmadi Qia. Wa.g Zheng Wa.g Hong He Sta.e Key Joint La.ora.ory of Environment Simula.ion a.d Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Chemistry a.d Chemica. Engineering Henan Polytechnic UniversityJiaozuoHenan 454000China Depa.tment of Process Engineering Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran Optoelectronics a.d Na.ophotonics Resea.ch Group Faculty of Electrical and Computer EngineeringTarbiat Modares UniversityTehranIran Gra.ua.e School of Engineering Nagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan

Sola.-driven ca.bon dioxide(CO_(2))conversion including photoca.a.ytic(PC),photoelectrochemica.(PEC),photovolta.c plus electrochemica.(PV/EC)systems,offers a.renewa.le a.d sca.a.le wa. to produce fuels a.d high-va.ue chemica.s for environment a.d energy *** review summa.izes the ba.ic funda.ent a.d the recent a.va.ces in the field of sola.-driven CO_(2)*** the visible-light a.sorption is a. importa.t stra.egy to improve sola. energy conversion *** sepa.a.ion a.d migra.ion of photogenera.ed cha.ges ca.riers to surfa.e sites a.d the surfa.e ca.a.ytic processes a.so determine the photoca.a.ytic *** engineering including co-ca.a.yst loa.ing,defect engineering,morphology control,surfa.e modifica.ion,surfa.e pha.e junction,a.d Z-scheme photoca.a.ytic system construction,ha.e become funda.enta. stra.egies to obta.n high-efficiency *** to photoca.a.ysis,these stra.egies ha.e been a.plied to improve the conversion efficiency a.d Fa.a.a.c efficiency of typica. PEC *** PV/EC systems,the electrode surfa.e structure a.d morphology,electrolyte effects,a.d ma.s tra.sport conditions a.fect the a.tivity a.d selectivity of electrochemica. CO_(2)***,the cha.lenges a.d prospects a.e a.dressed for the development of sola.-driven CO_(2)conversion system with high energy conversion efficiency,high product selectivity a.d sta.ility.

关键词： Sola.-driven CO_(2)reduction Photoca.a.ytic system Photoelectrochemica. system Photovolta.c plus electrochemica. system Surfa.e/interfa.e engineering

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