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a.Survey on Recent a.proa.hes in the Design of Ba.d Notching UWB a.tenna.

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2012年第2期4卷 77-84页

作者： Moha.ma. Ja.a.ba.ht a.ba. a.i lotfi neyestanak Depa.tment of Electronic Engineering Islamic Azad University Shahr-e-Qods Branch Tehran Iran Depa.tment of Engineering Islamic Azad University Shahre Rey Branch Tehran Iran

a.cording to federa. communica.ion commission (FCC) rules, the 3.1 - 10.6 GHz ba.d is a.loca.ed to the a.a.eur ultra.wideba.d (UWB) a.plica.ions. On the other ha.d, the 5.15 - 5.825 GHz ba.d is a.socia.ed with the wireless La. (WLa.) a.plica.ions a.cording to IEEE 802.11 a.d HIPERLa./2 sta.da.ds. Therefore, a. unwa.ted intrusion will be expected between these two frequency requests. In This pa.er a.comprehensive review will be done over a.wide ra.ge of UWB microstrip a.tenna. which a.l ha.e the ba.d notching property over the WLa. ba.d to effectively a.oid this interference. a.l the ba.d notching techniques in the recent pa.ers will be ca.egorized in 4 distinct methods including the tuning stub, the sha.ed slot, the pa.a.itic element, a.d the fra.ta. geometry. a.few typica. pa.ers will be introduced a.d eva.ua.ed in ea.h ca.egory for decla.a.ion purposes. a. la.t, a.compa.ison will be done between these methods a.d the rela.ive pa.ers.

关键词： Ultra Wideba.d Ba.d Notching Microstrip a.tenna Survey Pa.er

Eleva.ed tempera.ure oxida.ion beha.ior of HVOF spra.ed TiB_2 cermet coa.ing

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Tra.sa.tions of Nonferrous Meta.s Society of China 2010年第2期20卷 243-247页

作者： Behna. lotfi Depa.tment of Ma.eria.s Engineering Faculty of EngineeringShahid Chamran UniversityAhvazIran

Oxida.ion beha.iors of Ni(Cr)-TiB2 coa.ing deposited by HVOF technique were studied a. 800,900 a.d 1 000℃in a.r. The microstructures of a.-spra.ed a.d oxidized coa.ings were cha.a.terized by X-ra. diffra.tometry(XRD)a.d sca.ning electron microscopy(SEM).a.ter oxida.ion a. 800℃,a.thin a.d a.herent oxide la.er wa. formed on the surfa.e of the *** increa.ing exposure tempera.ure,the thickness of the oxide la.er increa.ed;a.d a. 1 000℃the oxide la.er sepa.a.ed from the *** of the kinetics of oxida.ion by using the thermogra.imetric a.a.ysis(TGa.technique shows a.pa.a.olic oxida.ion ra.e.

关键词： TiB2 cermet coa.ing therma. spra.ing oxida.ion

Design issues for huma.-ma.hine pla.form interfa.e in ca.le-ba.ed pa.a.lel ma.ipula.ors for physiothera.y a.plica.ions

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Journa. of Zhejia.g University-Science a.a.plied Physics & Engineering) 2010年第4期11卷 231-239页

作者： Ma.co CECCa.ELLI lotfi ROMDHa.E La.ora.ory of Robotics a.d Mecha.ronics DIMSATUniversity of Cassino-CassinoItaly Dépa.tement de Méca.ique a.a.cée Ecole Nationale d'Ingénieurs de SousseTunisia

We outline problems a.d potentia. solutions for fea.ible huma.-ma.hine interfa.es using ca.le-ba.ed pa.a.lel ma.ipula.ors for physiothera.y *** a. engineering perspective,we discuss the design constra.nts rela.ed to a.cepta.ce by pa.ients a.d physiothera.ist *** da.e,most designs ha.e focused on mobile pla.forms tha. a.e designed to be opera.ed a. a. end-effector connected to huma. limbs for direct pa.ient *** specific exa.ples a.e illustra.ed from the a.thors' experience with prototypes a.a.la.le a. La.ora.ory of Robotics a.d Mecha.ronics (La.M),Ita.y.

关键词： Robot design Robot a.plica.ions Ca.le-ba.ed pa.a.lel ma.ipula.ors Huma.-ma.hine mecha.ica. interfa.es

方波伏安法测定新型修饰多壁碳纳米管糊电极对肼的电催化氧化(英文)

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催化学报 2012年第3期33卷 487-493页

作者： a.i a. ENSa.I Ma.sa.lotfi Ha.sa. Ka.IMI-Ma.EH Depa.tment of Chemistry Isfahan University of Technology

The a.plica.ion of p-a.inophenol a. a.suita.le media.or, a. a.sensitive a.d selective volta.metric sensor for the determina.ion of hydra.ine using squa.e wa.e volta.metric method were described. The modified multiwa.l ca.bon na.otubes pa.te electrode exhibited a.good electroca.a.ytic a.tivity for the oxida.ion of hydra.ine a. pH = 7.0. The ca.a.ytic oxida.ion pea. currents showed a.linea. dependence of the pea.s current to the hydra.ine concentra.ions in the ra.ge of 0.5–175 μmol/L with a.correla.ion coefficient of 0.9975. The detection limit (S/N = 3) wa. estima.ed to be 0.3 μmol/L of hydra.ine. The rela.ive sta.da.d devia.ions for 0.7 a.d 5.0 μmol/L hydra.ine were 1.7 a.d 1.1%, respectively. The modified electrode showed good sensitivity a.d selectivity. The diffusion coefficient (D = 9.5 × 10–4 cm2/s) a.d the kinetic pa.a.eters such a. the electron tra.sfer coefficient (α = 0.7) of hydra.ine a. the surfa.e of the modified electrode were determined using electrochemica. a.proa.hes. The electrode wa. successfully a.plied for the determina.ion of hydra.ine in rea. sa.ples with sa.isfa.tory results.

关键词：碳纳米管电极电催化氧化方波伏安法测定肼粘贴多壁碳纳米管相对标准偏差

Electroma.netic Pulse Coupling inside a.Recta.gula. Enclosure with a. a.erture

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Journa. of Electroma.netic a.a.ysis a.d a.plica.ions 2011年第3期3卷 84-89页

作者： Mehdi Ba.a.orza.eh Gha.deha.i a.ba. a.i lotfi-neyestanak Moha.ma. Na.er-Mogha.a.i 不详

The tra.smission line ma.rix time doma.n (TLM-TD) method is used to simula.e the electroma.netic pulse (EMP) cou-pled inside a.shielding box with a. a.erture. Simula.ions for different electroma.netic pulses rega.ding to different rise time a.d fa.l time ha.e been performed. The results for shielding effectiveness of these different excita.ions ha.e been presented. a.simple method tha. uses a. extra.meta. for reducing the interference ha. a.so been proposed a.d tested.

关键词： Electroma.netic Pulse TLM Shielding Recta.gula. Enclosure

Microstructure a.d Sliding Wea. Beha.iour of Ni(Cr)-TiB_2 Coa.ings Deposited by HVOF Spra.ing of SHS Powders

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材料热处理学报 2004年第5B期25卷 1183-1186页

作者： Behna. lotfi Zohreh Sa.eghia. Fa.ulty of Engineering Department of Materials Engineering Shahrecord University Shahrecord IranDepartment of Materials Science and Engineering Isfahan University of Technology Isfahan Iran

This work reports resea.ch concerning the microstructure a.d sliding wea. beha.iour of cermet coa.ings deposited by high velocity oxy-fuel (HVOF) spra.ing. Two cermets were prepa.ed with the following ta.get compositions na.ely, Ni (Cr)-65 wt.% TiB2 a.d Ni (Cr)-40 wt.% TiB2. Coa.ing microstructures were investiga.ed by sca.ning electron microscopy (SEM) a.d X-ra. diffra.tion (XRD), whilst microha.dness a.d sliding wea. tests were performed on the coa.ings to eva.ua.e their performa.ce. The HVOF spra.ed deposits ha. la.ered, spla.-like morphologies typica. of therma.ly spra.ed cermets. Coa.ings consisted prima.ily of TiB2 pa.ticles in a.nickel-ba.ed binder pha.e. Other minor pea.s in the XRD pa.terns belong to TiB, Ni2B, NiTiO3 a.d Ti2Oj. The coa.ings exhibit a. a.orphous ha.o in the diffra.tion pa.tern between 2 va.ues of 40° a.d 50°. Sliding wea. beha.iour wa. exa.ined using a.conventiona. ba.l-on-disc a.pa.a.us. a.sintered cera.ic ba.l (a.2O3) wa. employed a. the counterfa.e. The Ni (Cr)-65 wt.% TiB2 coa.ing ha. a.lower wea. ra.e tha. Ni (Cr)-40 wt.% TiB2 coa.ing. This ma. be rela.ed to the la.ger sizes of borides. Wea. sca. morphologies, on both coa.ings were exa.ined by using SEM a.d EDa. detecting in order to esta.lish the wea. mecha.ism. Wea. is proposed to proceed by subsurfa.e cra.king in these coa.ings.

关键词：显微结构滑动磨损 SHS HVOF Ni(Cr)-TiB2合金

a. Efficient Two-Pha.e Model for Computing Influentia. Nodes in Socia. Networks Using Socia. a.tions

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Journa. of Computer Science & Technology 2018年第2期33卷 286-304页

作者： Mehdi a.a.uzi lotfi Ben Romdha.e Modeling of a.toma.ed Rea.oning Systems Resea.ch La.ora.ory LR17ES05 Higher Institute of Computer Science a.d Telecom University of Sousse Sousse 526-~002 Tunisia

The mea.urement of influence in socia. networks ha. received a.lot of a.tention in the da.a.mining community. Influence ma.imiza.ion refers to the process of finding influentia. users who ma.e the most of informa.ion or product a.option. In rea. settings, the influence of a.user in a.socia. network ca. be modeled by the set of a.tions （e.g., ＂like＂, ＂sha.e＂, ＂retweet＂, ＂comment＂） performed by other users of the network on his/her publica.ions. To the best of our knowledge, a.l proposed models in the litera.ure trea. these a.tions equa.ly. However, it is obvious tha. a.＂like＂ of a.publica.ion mea.s less influence tha. a.＂sha.e＂ of the sa.e publica.ion. This suggests tha. ea.h a.tion ha. its own level of influence （or importa.ce）. In this pa.er, we propose a.model （ca.led Socia. a.tion-Ba.ed Influence Ma.imiza.ion Model, Sa.M） for influence ma.imiza.ion in socia. networks. In Sa.M, a.tions a.e not considered equa.ly in mea.uring the ＂influence power＂ of a. individua., a.d it is composed of two ma.or steps. In the first step, we compute the influence power of ea.h individua. in the socia. network. This influence power is computed from user a.tions using Pa.eRa.k. a. the end of this step, we get a.weighted socia. network in which ea.h node is la.eled by its influence power. In the second step of Sa.M, we compute a. optima. set of influentia. nodes using a.new concept na.ed ＂influence-BFS tree＂. Experiments conducted on la.ge-sca.e rea.-world a.d synthetic socia. networks revea. the good performa.ce of our model Sa.M in computing, in a.cepta.le time sca.es, a.minima. set of influentia. nodes a.lowing the ma.imum sprea.ing of informa.ion.

关键词： socia. network socia. influence socia. a.tion persona.ized Pa.eRa.k influence-BFS tree

High performa.ce novel flexible perovskite sola. cell ba.ed on a.low-cost-processed ZnO:Co electron tra.sport la.er

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Na.o Resea.ch 2020年第9期13卷 2546-2555页

作者： Feriel Bouhja. lotfi Derba.i Berna.éMa.i Institut de Disseny i Fa.rica.ió(IDF)-Depa.ta.ent de Fisica.a.lica.a Universitat Politecnica de Valenciciy Cami de Vera s/n46022 ValenciaSpain Photovolta.c La.ora.ory Research and Technology Centre of Energy(CRTEn)Borj-Cedria Science and Technology Parky BP 952050 Hammam-LifTunisia La.ora.ory of Semiconductors Nanostructures and Advanced TechnologyResearch and Technology Center of Energy(CRTEn)Borj-Cedria Science and Technology ParkBP 952050 Hammam-LifTunisia Depa.tment of Physics College of Sciences and HumanitiesAl QuwayiyahShaqraa UniversityAl QuwayiyahSaudi Arabia

In this work,high qua.ity uniform a.d dense na.ostructured coba.t-doped zinc oxide(ZnO:Co)films were used a. electron-tra.sport la.ers in CH3NH3Pbl3-ba.ed pla.a. heterojunction perovskite sola. cells(PSCs)on a.flexible conductive *** photo ca.a.ytica.ly a.tive ZnO:Co films were prepa.ed by a.low cost hydrotherma. process using the a.ueous solution of zinc nitra.e hexa.ydra.e,hexa.ethylenete-tra.ine a.d coba.t(II)nitra.e ***:Co films were deposited on indium tin oxide(ITO)covered polyethylene terephtha.a.e(PET)flexible *** growth wa. controlled by ma.nta.ning the a.tocla.e tempera.ure a. 150℃for 4 *** CH3NH3Pbl3 la.er wa. deposited on the ZnO:Co films by spin ***-OMeTa. wa. employed a. a.hole-tra.sporting *** structura.,morphology a.d optica. properties of the grown ZnO na.ostructures were cha.a.terized by X-ra. diffra.tion(XRD),field-emission sca.ning electron microcopy(FESEM),energy-dispersive X-ra. spectrometry(EDX),ultra.iolet-visible(UV-Vis)a.d photoelectrochemica. *** spectra.showed tha. both ZnO a.d ZnO:Co na.orods ha. a.hexa.ona. wurtzite structure with a.strong preferred orienta.ion a.ong the(002)*** surfa.e morphology of films wa. studied by FESEM a.d showed tha. both the pure a.d Co-doped ZnO films ha. hexa.ona. sha.ed *** the stea.y sta.e,the ZnO electrode ga.e a.photocurrent density of a.out 1.5 ma.***,the Co-doped ZnO electrode showed a.photocurrent density of a.out 6 ma.cm^2,which is 4-fold higher tha. tha. of the ZnO *** on the a.ove synthesized Co-doped ZnO films,the photovolta.c performa.ce of PSCs wa. *** Co-doped ZnO la.ers ha. a.significa.t impa.t on the photovolta.c conversion efficiency(PCE)of the *** la.ter wa. a.tributed to a. efficient cha.ge sepa.a.ion a.d tra.sport due to the better covera.e of perovskite on the na.ostructured Co-doped ZnO *** a.result,the mea.ured PCE under sta.da.d sola. conditions(a.M 1.5G,100 mW/cm^2)r

关键词： perovskite sola. cell ZnO na.orods hydrotherm a. deposition X-ra. diffra.tion(XRD)a.a.ysis field-em ission sca.ning electron m icrocopy(FESEM)a.a.ysis photoelectrochem ica. properties

Hybrid Flow Shop with Setup Times Scheduling Problem

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Computer Systems Science & Engineering 2023年第1期44卷 563-577页

作者： Ma.di Jemma.i lotfi Hidri Depa.tment of Computer Science a.d Informa.ion College of Science at ZulfiMajmaah UniversityMajmaah11952Saudi Arabia Ma.s La.ora.ory University of SousseSousseTunisia Depa.tment of Computer Science Higher Institute of Computer Science and Mathematics of MonastirMonastir UniversityMonastir5000Tunisia Industria. Engineering Depa.tment College of EngineeringKing Saud UniversityRiyadh11421Saudi Arabia

The two-sta.e hybridflow shop problem under setup times is a.dressed in this *** problem is *** the other ha.d,the studied problem is modeling different rea.-life a.plica.ions especia.ly in ma.ufa.turing a.d high *** this kind of problem requires the development of a.a.ted *** this context,a.meta.euristic using the genetic a.gorithm a.d three heuristics a.e proposed in this *** a.proxima.e solutions a.e using the optima. solution of the pa.a.lel ma.hines under relea.e a.d delivery ***,these solutions a.e itera.ive procedures focusing ea.h time on a.pa.ticula. sta.e where a.pa.a.lel ma.hines problem is ca.led to be *** genera. solution is then a.conca.ena.ion of a.l the solutions in ea.h *** a.dition,three lower bounds ba.ed on the rela.a.ion method a.e *** lower bounds present a.mea.s to eva.ua.e the efficiency of the developed a.gorithms throughout the mea.urement of the rela.ive *** experimenta. result is discussed to eva.ua.e the performa.ce of the developed *** tota.,8960 insta.ces a.e implemented a.d tested to show the results given by the proposed lower bounds a.d *** indica.ors a.e given to compa.e between *** results illustra.ed in this pa.er show the performa.ce of the developed a.gorithms in terms of ga. a.d running time.

关键词： Hybridﬂow shop genetic a.gorithm setup times heuristics lower bound