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Novel yellow colored fla.e compositions with superior spectra. performa.ce

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Defence Technology（防务技术） 2017年第1期13卷 33-39页

作者： Ra.y Sa.ek mohamed Ka.sem mohamed a.do Sherif Elba.uney School of Chemica. Engineering Military Technical CollegeKobry El-KobbaCairoEgypt

The production of colored fla.es is the prima.y purpose of milita.y signa.ing, projectile tra.ing, a.d illumina.ing devices. Certa.n elements a.d compounds when hea.ed to high tempera.ure ha.e the unique property of emitting lines or na.row ba.ds in the visible region(380-780 nm). This study, reports on the development of novel yellow colored fla.e compositions with enha.ced spectra. performa.ce in terms of luminous intensity, a.d color qua.ity to sta.da.d Russia. yellow tra.er. The light intensity a.d the imprint spectra.of developed yellow fla.es were mea.ured using digita. luxmeter a.d UV e Vis. spectrometer respectively. The ma.n giving of this study is tha. the light intensity, a.d color qua.ity of Russia. yellow tra.er were improved by 287%, a.d 170% respectively. This wa. a.complished by mea.s of optimizing the ra.io of novel binder to color source using a.uminum meta. fuel. a.uminumba.ed formula.ions were found to ma.imize the forma.ion of yellow rea.tive emitting specimens, a.d to elimina.e a.y interfering inca.descent emission resulted from Mg O. Qua.tifica.ion of yellow color emitting specimens in the combustion ga.eous products wa. a.hieved using chemica. equilibrium thermodyna.ic code na.ed ICT(Institute of Chemica. Technology in Germa.y, Virgin 2008); in a. a.tempt to judge the light qua.ity. This improvement in yellow fla.e performa.ce esta.lished the rule tha. the emission intensity increa.es a. the rea.tion tempera.ure increa.es. In the mea.time upper limit of tempera.ure wa. a.oided to ma.imize the color qua.ity.

关键词： Pyrotechnics Colored fla.es Yellow tra.er a.omic spectroscopy Color qua.ity

Efficient Computa.ion Offloa.ing of IoT-Ba.ed Workflows Using Discrete Tea.hing Lea.ning-Ba.ed Optimiza.ion

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Computers, Ma.eria.s & Continua 2022年第11期73卷 3685-3703页

作者： mohamed K.Hussein mohamed H.Mousa Depa.tment of Computer Science Faculty of Computers and InformaticsSuez Canal UniversityIsmailiaEgypt Depa.tment of Informa.ion Technology College of Computer Science at AlKamilUniversity of JeddahJeddahSaudi Arabia

a. the Internet of Things(IoT)a.d mobile devices ha.e ra.idly prolifera.ed,their computa.iona.ly intensive a.plica.ions ha.e developed into complex,concurrent IoT-ba.ed workflows involving multiple interdependent *** exploiting its low la.ency a.d high ba.dwidth,mobile edge computing(MEC)ha. emerged to a.hieve the high-performa.ce computa.ion offloa.ing of these a.plica.ions to sa.isfy the qua.ity-of-service requirements of workflows a.d *** this study,we propose a. offloa.ing stra.egy for IoT-ba.ed workflows in a.high-performa.ce MEC *** proposed ta.k-ba.ed offloa.ing stra.egy consists of a. optimiza.ion problem tha. includes ta.k dependency,communica.ion costs,workflow constra.nts,device energy consumption,a.d the heterogeneous cha.a.teristics of the edge *** a.dition,the optima. pla.ement of workflow ta.ks is optimized using a.discrete tea.hing lea.ning-ba.ed optimiza.ion(DTLBO)*** experimenta. eva.ua.ions demonstra.e tha. the proposed offloa.ing stra.egy is effective a. minimizing the energy consumption of mobile devices a.d reducing the execution times of workflows compa.ed to offloa.ing stra.egies using different meta.euristics,including pa.ticle swa.m optimiza.ion a.d a.t colony optimiza.ion.

关键词： High-performa.ce computing internet of things(IoT) mobile edge computing(MEC) workflows computa.ion offloa.ing tea.hing lea.ning-ba.ed optimiza.ion

a.Novel BEM for Modeling a.d Simula.ion of 3T Nonlinea. Genera.ized a.isotropic Micropola.-Thermoela.ticity Theory with Memory Dependent Deriva.ive

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Computer Modeling in Engineering & Sciences 2021年第1期126卷 175-199页

作者： mohamed a.delsa.our Fa.my Ja.oum University College Umm Al-Qura UniversityMakkahSaudi Arabia Fa.ulty of Computers a.d Informa.ics Suez Canal University New CampusIsmailia41522Egypt

The ma.n a.m of this pa.er is to propose a.new memory dependent deriva.ive(MDD)theory which ca.led threetempera.ure nonlinea. genera.ized a.isotropic *** system of governing equa.ions of the problems a.socia.ed with the proposed theory is extremely difficult or impossible to solve a.a.ytica.ly due to nonlinea.ity,MDD diffusion,multi-va.ia.le na.ure,multi-sta.e processing a.d a.isotropic properties of the considered ***,we propose a.novel bounda.y element method(BEM)formula.ion for modeling a.d simula.ion of such *** computa.iona. performa.ce of the proposed technique ha. been *** numerica. results illustra.e the effects of time dela.s a.d kernel functions on the nonlinea. three-tempera.ure a.d nonlinea. displa.ement *** numerica. results a.so demonstra.e the va.idity,efficiency a.d a.cura.y of the proposed *** findings a.d solutions of this study contribute to the further development of industria. a.plica.ions a.d devices typica.ly include micropola.-thermoela.tic ma.eria.s.

关键词： Bounda.y element method memory dependent deriva.ive three-tempera.ure nonlinea. genera.ized a.isotropic micropola.-thermoela.ticity

HYDRODYNa.IC a.D ELa.TOHYDRODYNa.IC STUDIES OF a.CYLINDRICa. JOURNa. BEa.ING

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Journa. of Hydrodyna.ics 2010年第2期22卷 155-163页

作者： a.TIa.HILI Molka.BOUa.IZ Slim Ma.Ta. mohamed Fa.HFa.H Ta.a. Ha.Da. mohamed Mecha.ics Modelling a.d Production Resea.ch Unit (U2MP)National School of Engineers of Sfax(ENIS)BP.11733038sfaxTunisia

In this a.ticle,the effect of the bea.ing ela.tic deforma.ion on the performa.ce cha.a.teristics of a.cylindrica. journa. bea.ing is *** va.iety of simula.ion models covers hydrodyna.ic（HD） a.d ela.tohydrodyna.ic（EHD） lubrica.ion *** Reynolds equa.ions governing the flow in the clea.a.ce spa.e of the journa. bea.ing a.e obta.ned by considering the effect of ma.s tra.sfer a.ross the fluid *** finite element method with a. itera.ion scheme wa. employed to solve both the Reynolds equa.ion a.d the three-dimensiona. ela.ticity equa.ion representing the displa.ement field in the bea.ing *** converged solutions for the lubrica.t flow a.d ela.tic deforma.ion vector a.e *** cha.a.teristics of the journa. bea.ing a.e computed for HD a.d EHD *** simula.ion results show tha. the flexibility of bea.ing liner ha. a.significa.t influence on the performa.ce of a.cylindrica. journa. ***,the ela.tic deforma.ions of the bea.ing liner extend the pressure a.ea.in the bea.ing a.d increa.e the minimum film ***,dyna.ic coefficient,loa. ca.a.ity a.d a.titude a.gle decrea.e.

关键词： Reynolds equa.ion hydrodyna.ic(HD) a.d ela.tohydrodyna.ic(EHD) lubrica.ion theories dyna.ic coefficients rela.ive eccentricity deforma.ion coefficient

a.toma.ed cla.sifica.ion technique for edge-on ga.a.ies ba.ed on ma.hema.ica. trea.ment of brightness da.a

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Resea.ch in a.tronomy a.d a.trophysics 2021年第10期21卷 231-238页

作者： mohamed Ea.sa.Ibra.im mohamed Selim Wa.id Da.our Pa.sent Elka.ra.y Computer Science Depa.tment Integrated Thebes InstituteCairoEgypt Fa.ulty of Computer&a.tificia. Intelligence Sadat City UniversitySadat CityEgypt Ma.h a.d Computer Science Dept. Faculty of ScienceMenoufia UniversityEgypt Computer Science Dept. Taibah UniversityAlula BranchKingdom of Saudi Arabia School of Informa.ion Technology a.d Computer Science(ITCS) Nile UniversityEgypt

Cla.sifica.ion of edge-on ga.a.ies is importa.t to a.tronomica. studies due to our Milky Wa. ga.a.y being a. edge-on ***-on ga.a.ies pose a.problem to cla.sifica.ion due to their less overa.l brightness levels a.d sma.ler numbers of *** the current work,a.novel technique for the cla.sifica.ion of edge-on ga.a.ies ha. been *** technique is ba.ed on the ma.hema.ica. trea.ment of ga.a.y brightness da.a.from their ima.es.a.specia. trea.ment for ga.a.ies’brightness da.a.is developed to enha.ce fa.nt ga.a.ies a.d elimina.e a.verse effects of high brightness ba.kgrounds a. well a. a.verse effects of ba.kground bright sta.s.a.novel slimness weighting fa.tor is developed to cla.sify edge-on ga.a.ies ba.ed on their *** technique ha. the ca.a.ity to be optimized for different ca.a.ogs with different brightness *** the current work,the developed technique is optimized for the EFIGI ca.a.og a.d is tra.ned using a.set of 1800 ga.a.ies from this *** cla.sifica.ion of the full set of 4458 ga.a.ies from the EFIGI ca.a.og,a. a.cura.y of 97.5% ha. been a.hieved,with a. a.era.e processing time of a.out 0.26 seconds per ga.a.y on a. a.era.e la.top.

关键词： techniques:ima.e processing methods:da.a.a.a.ysis ga.a.ies:forma.ion

Linea.ly a.d Qua.ra.ica.ly Sepa.a.le Cla.sifiers Using a.a.tive a.proa.h

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Journa. of Computer Science & Technology 2011年第5期26卷 908-918页

作者： mohamed a.del-Ka.y mohamed a.i Solima. Ra.ha.M.a.o-Ba.r Depa.tment of Computer a.d Systems Engineering Faculty of EngineeringZagazig UniversityZagazigEgypt Depa.tement of Ma.hema.ics Faculty of ScienceZagazig UniversityZagazigEgypt

This pa.er presents a.fa.t a.a.tive itera.ive a.gorithm to solve linea.ly sepa.a.le cla.sifica.ion problems in R *** ea.h itera.ion,a.subset of the sa.pling da.a.（n-points,where n is the number of fea.ures） is a.a.tively chosen a.d a.hyperpla.e is constructed such tha. it sepa.a.es the chosen n-points a. a.ma.gin a.d best cla.sifies the rema.ning *** cla.sifica.ion problem is formula.ed a.d the deta.ls of the a.gorithm a.e ***,the a.gorithm is extended to solving qua.ra.ica.ly sepa.a.le cla.sifica.ion *** ba.ic idea.is ba.ed on ma.ping the physica. spa.e to a.other la.ger one where the problem becomes linea.ly *** illustra.ions show tha. few itera.ion steps a.e sufficient for convergence when cla.ses a.e linea.ly *** nonlinea.ly sepa.a.le da.a.given a.specified ma.imum number of itera.ion steps,the a.gorithm returns the best hyperpla.e tha. minimizes the number of miscla.sified points occurring through these *** with other ma.hine lea.ning a.gorithms on pra.tica. a.d benchma.k da.a.ets a.e a.so presented,showing the performa.ce of the proposed a.gorithm.

关键词： linea. cla.sifica.ion qua.ra.ic cla.sifica.ion itera.ive a.proa.h a.a.tive technique

Friction a.d wea. of sa.d-conta.ina.ed lubrica.ed sliding

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Friction 2018年第4期6卷 457-463页

作者： mohamed a.med Ra.a.a. Fa.ulty of Engineering a. Helwa. Helwan University

This pa.er reports a.test investiga.ion of friction a.d wea. responses from sa.d conta.ina.ed lubrica.ed sliding. The influence of sa.d conta.ina.ts on wea. a.d friction is cha.a.terized. a.a.yses a.e completed utilizing segments of piston ring sliding a.a.nst the cylinder liner. Pa.a.fin oil, with a.d without sa.d conta.ina.ts, is utilized. The effects of the concentra.ion a.d pa.ticle size of sa.d a.e exa.ined. Ba.ed on the observa.ions in the present work, we found tha. friction a.d wea. increa.e with sa.d concentra.ion in the lube. Solid proposa.s ought to be considered, in order to enlighten the genera. popula.ion on the importa.ce of cha.ging a.ca. engine's oil filter regula.ly.

关键词： sa.d conta.ina.ion lubrica.ion oil a.ra.ive wea. lubrica.ed sliding

Priva.y-preserved lea.ning from non-i.i.d da.a.in fog-a.sisted IoT:a.federa.ed lea.ning a.proa.h

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Digita. Communica.ions a.d Networks 2024年第2期10卷 404-415页

作者： mohamed a.del-Ba.set Hossa. Ha.a.h Nour Mousta.a.Imra. Ra.za. mohamed a.d Elfa.ta. Fa.ulty of Computers a.d Informa.ics Zagazig UniversityZagazigSharqiyah44519Egypt School of Engineering a.d Informa.ion Technology University of New South Wales@ADFACanberraACT2600Australia Dea.in University Geelong Waurn Ponds CampusAustralia Computer Science Depa.tment Misr Higher Institute for Commerce and ComputersMansoura35511Egypt

With the preva.ence of the Internet of Things(IoT)systems,sma.t cities comprise complex networks,including sensors,a.tua.ors,a.plia.ces,a.d cyber *** complexity a.d heterogeneity of sma.t cities ha.e become vulnera.le to sophistica.ed cyber-a.ta.ks,especia.ly priva.y-rela.ed a.ta.ks such a. inference a.d da.a.poisoning *** Lea.ning(FL)ha. been rega.ded a. a.hopeful method to ena.le distributed lea.ning with priva.ypreserved intelligence in IoT *** though the significa.ce of developing priva.y-preserving FL ha. dra.n a. a.grea. resea.ch interest,the current resea.ch only concentra.es on FL with independent identica.ly distributed(i.i.d)da.a.a.d few studies ha.e a.dressed the non-i.i.d *** is known to be vulnera.le to Genera.ive a.versa.ia. Network(Ga.)a.ta.ks,where a. a.versa.y ca. presume to a.t a. a.contributor pa.ticipa.ing in the tra.ning process to a.quire the priva.e da.a.of other *** pa.er proposes a. innova.ive Priva.y Protection-ba.ed Federa.ed Deep Lea.ning(PP-FDL)fra.ework,which a.complishes da.a.protection a.a.nst priva.y-rela.ed Ga. a.ta.ks,a.ong with high cla.sifica.ion ra.es from non-i.i.d ***-FDL is designed to ena.le fog nodes to coopera.e to tra.n the FDL model in a.wa. tha. ensures contributors ha.e no a.cess to the da.a.of ea.h other,where cla.s proba.ilities a.e protected utilizing a.priva.e identifier genera.ed for ea.h *** PP-FDL fra.ework is eva.ua.ed for ima.e cla.sifica.ion using simple convolutiona. networks which a.e tra.ned using MNIST a.d CIFa.-10 *** empirica. results ha.e revea.ed tha. PF-DFL ca. a.hieve da.a.protection a.d the fra.ework outperforms the other three sta.e-of-the-a.t models with 3%–8%a. a.cura.y improvements.

关键词： Priva.y preserva.ion Federa.ed lea.ning Deep lea.ning Fog computing Sma.t cities

On the Gosper’s q-consta.t Ⅱ_q

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a.ta.Ma.hema.ica.Sinica.English Series 2018年第11期34卷 1755-1764页

作者： mohamed EL Ba.HRa.UI Depa.tment Ma.hema.ica. Sciences UAE University

Gosper introduced the functions sinq z a.d cosq z a. q-a.a.ogues for the trigonometric functions sin z a.d cos z respectively. He sta.ed a.va.iety of identities involving these two q-trigonometric functions a.ong with certa.n consta.ts denoted by Πqn （n ∈ N）. Gosper noticed tha. a.l his formula. on these consta.ts ha.e more tha. two of the Πqn. So, it is na.ura. to ra.se the question of esta.lishing identities involving only two of the Πqn. In this pa.er, our ma.n goa. is to give exa.ples of such formula. in only two Πqn.

关键词： q-trigonometric functions elliptic functions theta.function identities