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Free vibra.ion a.d buckling a.a.ysis of polymeric composite bea.s reinforced by functiona.ly gra.ed ba.boo fbers

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a.plied ma.h.ma.ics a.d mech.nics(English.Edition) 2024年第3期45卷 543-562页

作者： h.m.FEIZa.a. m.h.Ya. Depa.tment of mech.nica. Engineering Razi UniversityKermanshah ***Iran

Na.ura. fibers h.ve been extensively resea.ch.d a. reinforcement ma.eria.s in polymers on a.count of th.ir environmenta. a.d economic a.va.ta.es in compa.ison with.synth.tic fibers in th. recent *** fibers a.e renowned for th.ir good mech.nica. properties,a.unda.ce,a.d sh.rt cycle *** bea.s a.e one of th. funda.enta. structura. components a.d a.e susceptible to mech.nica. loa.s in engineering a.plica.ions,th.s pa.er performs a.study on th. free vibra.ion a.d buckling responses of ba.boo fiber reinforced composite(BFRC)bea.s on th. ela.tic *** different functiona.ly gra.ed(FG)la.outs a.d a.uniform one a.e th. considered distributions for unidirectiona. long ba.boo fibers a.ross th. *** ela.tic properties of th. composite a.e determined with.th. la. of *** h.milton’s principle,th. governing equa.ions of motion a.e *** genera.ized differentia. qua.ra.ure meth.d(GDQm)is th.n a.plied to th. equa.ions to obta.n th. *** a.h.eved outcomes exh.bit th.t th. na.ura. frequency a.d buckling loa. va.ues va.y a. th. fiber volume fra.tions a.d distributions,ela.tic founda.ion stiffness va.ues,a.d bounda.y conditions(BCs)a.d slenderness ra.io of th. bea. ***,a.compa.a.ive study is conducted between th. derived a.a.ysis outcomes for BFRC a.d h.mogenous polymer bea.s to exa.ine th. effectiveness of ba.boo fibers a. reinforcement ma.eria.s,demonstra.ing th. significa.t enh.ncements in both.vibra.ion a.d buckling responses,with.th. exception of na.ura. frequencies for ca.tilever bea.s on th. Pa.terna. founda.ion with.th. FG-◇fiber ***,th. obta.ned a.a.ysis results of BFRC bea.s a.e a.so compa.ed with.th.se for ca.bon na.otube reinforced composite(CNTRC)bea.s found in th. litera.ure,indica.ing th.t th. buckling loa.s a.d na.ura. frequencies of BFRC bea.s a.e lower th.n th.se of CNTRC bea.s.

关键词： ba.boo fiber free vibra.ion buckling a.a.ysis functiona.ly gra.ed(FG)bea. ela.tic founda.ion genera.ized differentia. qua.ra.ure meth.d(GDQm)

DFT investiga.ion of h.lf-meta.lic ferroma.netic ra.e ea.th.ba.ed spinels mgh._(2)Z_(4)(Z=S,Se)

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Journa. of Ra.e Ea.th. 2024年第1期42卷 121-128,I0005页

作者： ma.za.Za.ib mumta. ma.zoor N.a.Noor m.Wa.a. Iqba. ma.ia.a.gh.r h.h.h.ga.y a.La.ef Depa.tment of Ph.sics Riphah International UniversityLahore CampusPakistan Resea.ch.Centre for a.va.ced ma.eria.s Science King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Depa.tment of Ph.sics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Depa.tment of Ph.sics a.d a.tronomy College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

h.lf-meta.lic ferroma.netism,mech.nica. a. well a. th.rmoelectric properties for ra.e ea.th.ba.ed spinels mgh._(2)Z_(4)(Z=S,Se)were investiga.ed using density functiona. th.ory(DFT).Structura. optimiza.ion wa. done with.Perdew-Burke-Eh.enzorf(PBE)sol-genera.ized gra.ient a.proxima.ion(GGa.to ca.cula.e th. la.tice consta.t of both.spinels compa.a.le to experimenta. *** a.dition,Born sta.ility criteria.a.d nega.ive forma.ion energy sh.w th.t our studied spinels a.e a.so structura.ly a.d dyna.ica.ly sta.le in th. cubic *** ferroma.netic(Fm)sta.e sta.ility,we a.so ca.cula.ed th. energy differences a.ong Fm,a.tiferroma.netic(a.m),a.d non-ma.netic(Nm)***,Curie tempera.ures of ferroma.netic ph.ses were a.so *** used Tra.s-Bla.0} improved BeckeJoh.son(TB-mBJ)potentia. functiona. for electronics a. well a. ma.netic ch.ra.teristics,wh.ch.lea. to th. consistent expla.a.ion of h.lf-meta.lic ferroma.netism,representing th. wh.le ba.d-occupa.cy in ma.eria. with.exa.t deta.l of density of sta.es(DOS).Th. sta.le Fm sta.e wa. exa.ined in spinels due to th. exch.nge splitting of h. ca.ion consisting of p-d h.bridiza.ions compa.ible with.th. result a.h.eved for electronics ba.d structure a.d ***,spin ma.netic moment wa. expla.ned in terms of a.ion,ca.ion,a.d sh.ring ch.rge on studied *** a.dition,th. ca.cula.ed th.rmoelectric properties clea.ly sh.w th.t opera.ion ra.ge of th.se systems ma. be utilized by future experimenta. works for identifying th. potentia. a.plica.ions of th.se systems.

关键词： h.-ba.ed spinels DFT simula.ions mech.nica. pa.a.eters Electronic properties h. ferroma.netism Figure of merit

Novel synth.sis of sta.ilized Bi1-x-yGdxDyyO1.5 solid electrolytes with.enh.nced conductivity for intermedia.e tempera.ure solid oxide fuel cells（SOFCs）

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Journa. of Ra.e Ea.th. 2024年第10期42卷 1903-1911页

作者： a.0}ed h.Ibra.0}m Yeh.a.m.a.ba. h.a.a.oub ma.wa.h.a.i musta.a.a.doori ma.eria.s Science La.ora.ory Physics DepartmentFaculty of ScienceSuez Canal University ministry of h.gh.r Educa.ion a.d Scientific Resea.ch Aliraqia University

h.rein,we report th. synth.sis of a.Dy-Gd co-doped cubic ph.se-sta.ilized Bi2O3solid electrolyte system via.solid-sta.e processing under a.mosph.ric *** with.Dy3+a.d Gd3+h.s been observed to significa.tly enh.nce th. densifica.ion process during sintering for sta.iliza.ion purposes,th.reby improving th. electrica. properties of δ-Bi2O3-type *** synth.sized cera.ics were ch.ra.terized using X-ra. diffra.tion（XRD）,field emission sca.ning electron microscopy-energy dispersive X-ra. spectroscopy（FESEm-EDX）,th.rma. gra.imetry/differentia. th.rma. a.a.ysis（TG/DTa.,a.d th. four-point probe tech.ique（4PPT）.XRD a.a.ysis revea.s th.t th. sa.ples Bi1-x-yGdxDyyO1.5（y=0.05/x=0.05,0.10,0,15,a.d 0.20,a.d x=0.05/y=0.10,0.15,a.d 0.20） exh.bit a.sta.le fa.e-centered cubic δ-ph.se a.d a.mixed-ph.se crysta.logra.h.c *** XRD a.a.ysis of th. sta.ilized δ-ph.se suggests th.t th. prepa.ed oxides sh.w a.fa.e-centered cubic（FCC） structure with.a.spa.e group of *** microgra.h. revea. th.t th. composition Bi0.90Gd0.05Dy0.05O1.5h.s no significa.t ***,a. evident increa.e in th. pore forma.ion is observed a. th. a.ount of Gd2O3increa.es until it rea.h.s 20%.Th.s finding suggests th.t dense pellets a.e formed during th. sintering process a. 900-1000℃.Th. DTa.a.a.yses were performed to verify th. ph.se sta.ility,wh.ch.a.rees with.th. XRD *** electroch.mica. performa.ce of th. synth.sized Dy-Gd co-doped Bi2O3solid electrolyte system wa. eva.ua.ed a.d a.a.yzed in deta.l by using th. electroch.mica. impeda.ce spectroscopy（EIS） tech.ique,Ba.ed on EIS a.d conductivity mea.urements,Bi0.75Gd0.20Dy0.05O1.5exh.bits th. lowest a.tiva.ion energy of 0.519 eV a.d th. h.gh.st conductivity va.ue of 0.398 S/cm a. 627℃compa.ed to th. oth.r sa.ples;th.s composition ca. be used a. a.solid electrolyte for intermedia.etempera.ure solid oxide fuel cells（SOFCs）.

关键词： Electroch.mica. impeda.ce spectroscopy (EIS) Fa.t Fourier tra.sform (FFT) Ra.e ea.th. Rietveld Solid oxide fuel cells (SOFCs) Solid-sta.e processing

Exploring Trees Diversity a.d Ecologica. Va.ue of mounta.n Forests in th. Blue Nile Region of Suda.

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Open Journa. of Ecology 2024年第3期14卷 245-256页

作者： Da.a.a.la.m. Da.a.a.la.h.yth.m h. Gibreel a.0}ed a. h. Siddig Yousif E. Ya.oub h.sh.m a. a.delka.im Kh.tir h.T. Sa.ed a.0}ed I. a.uelba.h.r Fa.ulty of Forestry-Sh.mba. University of Khartoum Khartoum Sudan h.rva.d Forest Harvard University Petersham MA USA Fa.ulty of Forest Science a.d Wood Tech.ology University of Gezira Wad-Medani Sudan Depa.tment of Forestry a.d Ra.ge Sciences Faculty of Natural Resources and Environmental Studies Alsalam University Alfula Sudan Forest Resea.ch.a.d Gum a.a.ic Centre Agricultural Research Corporation Khartoum-Soba Sudan

We ca.ried out th.s resea.ch.a. a.u-Ga.da. Na.ura. Forest Reserve (a.FR) wh.ch.is loca.ed ea.t of Blue Nile River, in Blue Nile Sta.e, Suda.. It a.ms a. exploring tree composition a.sessing th.ir diversity indices, a.d ecologica. importa.ce va.ues. For survey of types a.d estima.ion of density of tree species in th. forest, we ra.domly distributed 97 circula. sa.ple plots (0.1 h.cta.e (h.)). In ea.h.sa.ple plot we identified a.l trees to th. species level, recorded th.ir frequencies a.d computed species diversity a.d importa.ce va.ue indices (IVI). a.tota. of 13 tree species, wh.ch.belong to 12 genera.a.d nine fa.ilies, were identified in th. tree la.er of th. forest. mea. tree density in a.FR wa. 116 trees/h., composed ma.nly of Boswellia.pa.yrifera.(Del.) h.ch.t. (48), followed by Combretum h.rtma.nia.u (19) a.d La.nea.fruticosa.(18). Fa.a.ea. wa. th. most common fa.ily followed by Combreta.ea. a.d ma.va.ea.. B. pa.yrifera.Delile h.ch.t wa. th. most a.unda.t wh.le a.a.ia.seya. wa. th. lea.t a.unda.t species. Species rich.ess (R = 1.71), evenness (E = 0.69), domina.ce (0.24) indices a.d Simpson’s Index of Diversity (D' = 0.76) suggest a.modera.e diversity, modera.e numbers of individua.s in ea.h.species a.d a.modera.e community sta.ility. Th. resea.ch.provides empirica. results on diversity a.d ecologica. importa.ce va.ue of species, signifies th. urging need to sa.egua.d th.ea.ened species a.d to prioritize th.m for conserva.ion, a. well a. th. need to promote ma.a.ement of a.unda.t species to provide multiple forest ecosystem services.

关键词： Tree Species Diversity Dry-La.d Forest Suda.

Influence of erbium on structura.,a.d ch.rged pa.ticles,ph.tons,a.d neutrons sh.elding properties of Ba.(1-x)Er_(x)SnO_(3) perovskite cera.ics

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Journa. of Ra.e Ea.th. 2024年第4期42卷 724-732页

作者： m.K.h.h.ma. Nida. Dwa.ka. m.h.a.mh.reb m.I.Sa.yed R.m.h.ma. Y.S.m.a.a.era.i m.a.a.messiere Ga.eel Sa.eh.a.0}a. h.ssein a.oma.i K.a.Ziq Depa.tment of Ba.ic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Depa.tment of Ph.sics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Depa.tment of Ph.sics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Ba.ic a.d a.plied Scientific Resea.ch.Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Depa.tment of Ph.sics Faculty of ScienceIsra UniversityAmman11622Jordan Depa.tment of Nuclea. medicine Resea.ch Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia medica. Ima.ing Depa.tment Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Depa.tment of Bioph.sics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Depa.tment of Biomedica. Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&minera.s Regula.ory Commission Amman11821Jordan

Five perovskite cera.ics sa.ples of Ba.(1-x)Er_(x)SnO_(3) with.x=0.00,0.05,0.10,0.15,a.d 0.20 were synth.sized using th. conventiona. solid-sta.e rea.tion *** prepa.ed sa.ples were ch.ra.terized by X-ra. diffra.tion(XRD),Fourier tra.sforms infra.ed(FTIR),a.d UV-Vis *** sh.elding properties a.a.nst ionizing ra.ia.ion were a.so *** XRD a.a.ysis sh.ws th. perovskite cubic structure a. th. ma.or ph.se in a.l *** FTIR revea.s a.distinctive ba.d a.ound 614-620 cm^(-1) a.cribed to th. a.tisymmetric O-Sn-O ***-Vis spectroscopy wa. used to determine th. ba.dga. a.cording to diffuse reflecta.ce,a.d th. results displa. a.fixed enh.ncement in th. ba.dga. from 3.2 to 3.3 eV for a.l ***-ra. sh.elding properties of th. synth.sized sa.ples were experimenta.ly mea.ured a.d compa.ed with.XCOm computa.iona. *** rela.ive differences(Δ,%)between experimenta. a.d th.o retica. va.ues a.e low a.d fa.l with.n th. 0.446%-7.10%*** a.dition of Er lea.s to th. enh.nced density,neutron,a.d ga.ma.sh.elding *** contra.t,ch.rged pa.ticles’sh.elding pa.a.eters gra.ua.ly reduce with.rising Er *** results suggest th.t Ba.(1-x)Er_(x)SnO_(3) sa.ples ca. be used in different ra.ia.ion sh.elding a.plica.ions.

关键词： Perovskite Cera.ics Ga.ma.ra. sh.elding ma.s stopping power Ra.e ea.th.

Th. multi-impurity system in CdSe na.opla.elets:electronic structure a.d th.rmodyna.ic properties

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Communica.ions in Th.oretica. Ph.sics 2024年第3期76卷 165-173页

作者： D a.Ba.h.a.a.ya. V a.h.rutynya. E m Ka.a.ya. h.a.Sa.kisya. Russia.-a.menia. University H Emin 1230051YerevanArmenia Institute of a.plied Problems of Ph.sics 25 Nersisyan St0014YerevanArmenia

Th.s pa.er th.oretica.ly studies th. impurity sta.es a.d th. effects of impurity concentra.ion a.d configura.ion on th. optica.,electrica.,a.d sta.istica. properties of CdSe na.opla.elets(NPLs).a. ima.e ch.rge-ba.ed model of electron-impurity intera.tion is *** ch.rge-ca.rier energy spectra.a.d corresponding wa.e functions depending on th. impurity number a.d configura.ion a.e *** electron binding energies a.e ca.cula.ed for different NPL *** is sh.wn th.t th. ima.e ch.rge-ba.ed intera.tion potentia. th.t a.ises due to th. dielectric consta.ts misma.ch.is much.stronger th.n th. intera.tion potentia. th.t does not ta.e such.a.misma.ch.into ***,it is demonstra.ed th.t th. binding energies a.e increa.ing with.th. number of *** ca.cula.e th. ca.onica. pa.tition function using th. energy levels of th. electron,wh.ch.in turn is used to obta.n th. mea. energy,h.a. ca.a.ity,a.d entropy of th. non-intera.ting electron *** th.rmodyna.ic properties of th. non-intera.ting electron ga. th.t depend on th. geometric pa.a.eters of th. NPL,impurity number,configura.ion,a.d tempera.ure a.e studied.

关键词： na.opla.eletes th.rmodyna.ic properties impurity sta.es

Integra.ed a.proa.h.s of mech.nica. Ba.rier, Insecticide a.d Bota.ica.s a.a.nst ma.go mea.ybug (Drosich. ma.gifera.)

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a.va.ces in Entomology 2024年第3期12卷 195-202页

作者： N. a.h.er m. Z. a.a. m. a. Ra.0}ma. m. R. U. mia.0}I. h. mia. m. a. La.if Depa.tment of Entomology Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Depa.tment of Entomology Faculty of Agriculture Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh Depa.tment of Pla.t Pa.h.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Depa.tment of Pla.t Pa.h.logy Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh

a. experiment wa. conducted to test th. effica.y of a.mech.nica. ba.rier a.ound th. tree trunk with.one spra. of Cypermeth.in @ 1 ml/l a.d turmeric powder extra.t @ 15 g/500ml of wa.er a.plied in integra.ed a.proa.h.s a.a.nst ma.go mea.ybug on ma.go tree. Th.re were 7 trea.ments including a.control. Th. trea.ments were mech.nica. ba.rier, Cypermeth.in spra. @ 1 ml/l, Turmeric powder spra. @ 15 g/500ml of wa.er, Cypermeth.in spra. + Turmeric spra., Cypermeth.in spra. + mech.nica. ba.rier, Turmeric + mech.nica. ba.rier a.d untrea.ed control. Th.ee-yea.-old ma.go pla.ts gra.ted from a.5-yea.-old ma.go tree (Va.iety a.ropa.i) a.d pla.ted in pots were used in th. experiment. Th. trea.ment, Cypermeth.in spra. + mech.nica. ba.rier ga.e th. h.gh.st reduction of ma.go mea.ybug popula.ion 87.06% to 93.90% followed by Turmeric spra. + mech.nica. ba.rier a.d sh.wed 81.13% to 86.04% a.d mech.nica. ba.rier a.one sh.wed 81.13% to 84.59% popula.ion reduction. Turmeric powder extra.t sh.wed only (8.42% to 23.77%) popula.ion reduction of ma.go mea.ybug wh.ch.wa. lowest compa.ed to oth.r trea.ments.

关键词： ma.go mea.ybug Integra.ed ma.a.ement

Impa.t of ca.bima.ole combined with.vita.in E on testicula. injury induced by experimenta. h.perth.roidism in a.ult a.bino ra.s:oxida.ive/infla.ma.ory/a.optotic pa.h.a.s

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a.ia. Journa. of a.drology 2024年第4期26卷 396-401页

作者： Ra.a.a. S h.ssein mousta.a.m Eya.a.Ra.h.d m mosta.a.Sa.a.0}m Ela.dy Sh.reen h.Elsa.ed h.ny m Sa.d Depa.tment of Derma.ology College of Medicine Prince Sattam Bin Abdulaziz UniversityAl-Kharj 16242Saudi Arabia Depa.tment of Derma.ology Andrology and STDsAssiut Police HospitalAssiut 71525Egypt Depa.tment of Derma.ology Venereology and AndrologyFaculty of MedicineSuez Canal UniversityIsmailia 41522Egypt Depa.tment of a.drology a.d Sexology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Depa.tment of Clinica. Ph.rma.ology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Depa.tment of Reh.bilita.ion Sciences Faculty of Health and Rehabilitation SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh 12271Saudi Arabia.

Th.roid h.rmones pla. essentia. roles in sperma.ogenesis,but th.ir effects on infertile ma.es rema.n poorly *** study a.med to eva.ua.e th. impa.t of combining ca.bima.ole(CBZ)with.vita.in E(VE)on testicula. injury induced by experimenta. h.perth.roidism in a.ult a.bino ra.s,focusing on oxida.ive,infla.ma.ory,a.d a.optotic *** th.s experimenta. study,64 a.ult ma.e a.bino Wista. ra.s were divided into eigh. groups:Group I(control-untrea.ed),Group II(CBZ-control),Group III(VE-control),Group IV(CBZ+VE-control),Group V(levoth.roxine-induced testicula. injury),Group VI(levoth.roxine+CBZ-trea.ed),Group VII(levoth.roxine+VE-trea.ed),a.d Group VIII(levoth.roxine+CBZ+VE-trea.ed).Th. study wa. conducted in th. Fa.ulty of medicine,Suez Ca.a. University(Isma.lia.Egypt).a.ter cervica. deca.ita.ion,both.testes a.d epididymis were exa.ined h.stopa.h.logica.ly a.d *** differences were observed a.ong groups concerning ma.ondia.deh.de(mDa.,gluta.h.one(GSh.,superoxide dismuta.e(SOD),a.d ca.a.a.e(Ca.;a.l Pmera.e ch.in rea.tion a.a.ysis sh.wed significa.t differences in tumor necrosis fa.tor-α(TNF-α),interleukin-10(IL-10),Bcl-2-a.socia.ed X protein(Ba.),B-cell lymph.ma.2 protein(Bcl2),p53,Ca.pa.e-3,Ca.pa.e-8,Ca.pa.e-9,a.d nuclea. fa.tor-ka.pa.B(NF-κB)mRNa.levels(a.l Ph.perth.roid group trea.ed with.CBZ a.one(Group VI)exh.bited testicula. side effects,a.fecting seminiferous tubules a.d ***,th. Group VIII sh.wed improved sperma.ogenesis a.d a.decrea.e in testicula. side *** a.dition of VE to th. trea.ment of h.perth.roid ra.s with.CBZ reduced testicula. side effects a.d seminiferous tubula. a.fection wh.n potentia.ly improving *** resea.ch.is needed to elucida.e th. underlying mech.nisms fully.

关键词： a.tith.roid drugs testicula. injury th.roid gla.d vita.in E

Optimiza.ion of Stea.th.a.ch.Network Security System for th. Detection a.d mitiga.ion of Distributed Denia. of Service (DDoS) a.ta.k: a.plica.ion to Sma.t Grid System

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Communica.ions a.d Network 2024年第3期16卷 108-134页

作者： Emma.uel S. Kola.ole Penrose S. Cofie Joh. h. Fuller Ca.eta. m. a.ujuobi Emma.uel a. Da.a.Justin F. Forema. Pa.ela.h. Obiomon Electrica. a.d Computer Engineering Depa.tment Prairie View A&M University Prairie View TX USA

Th. Sma.t Grid is a. enh.ncement of th. tra.itiona. grid system a.d employs new tech.ologies a.d soph.stica.ed communica.ion tech.iques for electrica. power tra.smission a.d distribution. Th. Sma.t Grid’s communica.ion network sh.res informa.ion a.out sta.us of its severa. integra.ed IEDs (Intelligent Electronic Devices). h.wever, th. IEDs connected th.ough.ut th. Sma.t Grid, open opportunities for a.ta.kers to interfere with.th. communica.ions a.d utilities resources or ta.e clients’ priva.e da.a. Th.s development h.s introduced new cyber-security ch.llenges for th. Sma.t Grid a.d is a.very concerning issue beca.se of emerging cyber-th.ea.s a.d security incidents th.t h.ve occurred recently a.l over th. world. Th. purpose of th.s resea.ch.is to detect a.d mitiga.e Distributed Denia. of Service [DDoS] with.a.plica.ion to th. Electrica. Sma.t Grid System by deploying a. optimized Stea.th.a.ch.Secure Network a.a.ytics tool. In th.s pa.er, th. DDoS a.ta.k in th. Sma.t Grid communica.ion networks wa. modeled using Stea.th.a.ch.tool. Th. simula.ed network consisted of Secure Network a.a.ytic tools virtua. ma.h.nes (Vms), electrica. Grid network communica.ion topology, a.ta.kers a.d Ta.get Vms. Fina.ly, th. experiments a.d simula.ions were performed, a.d th. resea.ch.results sh.wed th.t Stea.th.a.ch.a.a.ytic tool is very effective in detecting a.d mitiga.ing DDoS a.ta.ks in th. Sma.t Grid System with.ut ca.sing a.y bla.kout or sh.tdown of a.y interna. systems a. compa.ed to oth.r tools such.a. GNS3, NeSSi2, NISST Fra.ework, OmNeT++, INET Fra.ework, Rea.E, NS2, NS3, m5 Simula.or, OPNET, PLC & TIa.Porta. ma.a.ement Softwa.e wh.ch.do not h.ve th. ca.a.ility to do so. a.so, using Stea.th.a.ch.tool to crea.e a.security ba.eline for Sma.t Grid environment, contributes to risk mitiga.ion a.d sound security h.giene.

关键词： Sma.t Grid System Distributed Denia. of Service (DDoS) a.ta.k Intrusion Detection a.d Prevention Systems Detection mitiga.ion a.d Stea.th.a.ch