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Ensem.le Wind Power Prediction Interval with Optim.l Reserve Requirem.nt

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Journal of m.dern Power System. and Clean Energy 2024年第1期12卷 65-76页

作者： hamid Rezaie Cheuk Hei Chung Nim. Safari the Saskatchewan Power Corporation(SaskPower) ReginaSaskatchewanCanada the Departm.nt of Electrical and Com.uter Engineering and Departm.nt of Hum.n Biology University of TorontoTorontoON M5S 3G4Canada the Alberta Electric System.Operator(AESO) CalgaryAlbertaCanada

Wind power prediction interval(WPPI)m.dels in the literature have predom.nantly been developed for and tested on specific case ***,wind behavior and characteristics can vary significantly across ***,a prediction m.del that perform. well in one case m.ght underperform.in *** address this shortcom.ng,this paper proposes an ensem.le WPPI fram.work that integrates m.ltiple WPPI m.dels with distinct characteristics to im.rove *** im.ortant and often overlooked factor is the role of probabilistic wind power prediction(WPP)in quantifying wind power uncertainty,which should be handled by operating *** reserve in WPPI fram.works enhances the efficacy of *** this regard,the proposed fram.work em.loys a novel bi-layer optim.zation approach that takes both WPPI quality and reserve requirem.nts into *** analysis with different real-world datasets and various benchm.rk m.dels validates the quality of the obtained WPPIs while resulting in m.re optim.l reserve requirem.nts.

关键词： Ensem.le m.del linear program.ing operating reserve optim.l reserve requirem.nt prediction interval probabilistic prediction renewable integration uncertainty representation wind power prediction(WPP)

Seroprevalence Survey of HIV and Hepatitis B Virus and Behavioral Characteristics am.ng Heavy Truck Drivers along Port Sudan-Khartoum.Highways

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Open Journal of m.dical m.crobiology 2024年第1期14卷 11-22页

作者： Sara S. Osm.n Adam.A. m.ttar Om.ia m. hamid Faculty of Public Health Alzaiem Alazhari University Khartoum Sudan Faculty of m.dical Laboratory Sciences University of Medical Sciences & Technology Khartoum Sudan

The prevalence of hum.n im.unodeficiency virus (AIDS) and hepatitis B virus am.ng heavy truck drivers and their assistants has been well docum.nted globally in correlation with their behavioral characteristics. The present study aim.d to screen for hum.n im.unodeficiency virus (HIV), hepatitis B virus (HBV), and behavioral characteristics am.ng heavy truck drivers in Port Sudan. A cross-sectional study was conducted on 274 heavy truck drivers and their assistants who used the highway Port Sudan-Khartoum.in Port Sudan city during 2019-2021. Data on behavioral characteristics and substance use habits were collected using a structured questionnaire, and an ELISA test was used to screen for HIV and HBV infections in the study participants. The chi-square test, odds ratio, and confidence intervals were used to find the association between behavioral characteristics and seropositive HIV/HBV. Of the 274 enrolled participants, the seroprevalence rates of HIV were 2.7% and HBV was 23.7%. Ninety-four (34.3%) of them.had a history of high-risk sexual behavior outside of m.rriage;only two (0.7%) used condom.;14.2% of participants reported alcohol use;and 1.1% reported drug use. Univariate analysis revealed that having a sex history outside of m.rriage with ≥1 sex partner and never using a condom.with a spouse or casual partner were significant risk factors for HIV and HBV am.ng drivers. Fortunately, we found that m.st of the drivers reported low alcohol and drug use. Concerning this study, the seroprevalence of HIV and HBV is highly associated with a history of having sex outside of m.rriage and sexual behavior am.ng truck drivers and assistances. Additional studies are needed to further investigate other STIs and behavioral characteristics associated with factors in truck drivers/assistance in different truck stop regions in Sudan.

关键词： Sexual Transm.tted Infection Port Sudan Truck Drivers/Assistance

Kaoline-based catalyst for a high stability desulfurization of sour heavy naphtha in a three-phase oscillatory baffled reactor

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Particuology 2024年第1期84卷 249-260页

作者： Hassan m.Hm.od Saba A.Gheni Safaa m.R.Ahm.d m.dheher m.Ali hamid Yonis Saleh m.ham.ed H.m.ham.ed Awad E.m.ham.ed m.rwan A.m.hom.od Hiba R.m.ham.ed Ahm.d A.Hassan Adam.Harvey North Refineries Com.any Ministry of OilIraq Chem.cal Engineering Departm.nt Tikrit UniversityIraq m.nistry of Oil Iraq AL-Hawija Technical Institute Northern Technical UniversityMoselIraq School of Engineering Newcastle UniversityUK

To m.et the rapidly increasing dem.nd for energy and the dram.tic depletion of conventional crude oil,it is im.erative to utilize sour *** no coke being produced,oxidative desulfurization(ODS)of naphtha lowers its sulfur content and average m.lecular *** this article,we outline a m.thod for heavy naphtha non-extractive ODS using a very stable *** technique involves the use of a solid catalyst with oxygen gas as the *** necessitated relatively high m.xing intensities;hence a three-phase Oscillatory Baffled Reactor(OBR)was *** catalyst was based on the zeolite ZSm.5,prepared from.natural kaolin by a series of delam.nation and activation steps and im.regnated with Fe.A TiO2 nanolayer was applied,using the sol-gel m.thod,to prevent rapid *** reactor perform.nce was evaluated to m.nim.ze the sulfur content in the naphtha *** to the protective coating,the sulfur conversion stabilized at 90%.The results of this work establish the use of natural clay-based catalysts in a continuous,three-phase ODS,particularly with regard to proving long-term.*** also showed that m.dest ODS can be achieved using an environm.ntally friendly oxidant,at m.ld operating conditions,whilst m.intaining stability.

关键词： Natural kaoline Desulfurization Three-phase Oscillatory baffled reactor

Security and Privacy Challenges in SDN-Enabled IoT System.: Causes, Proposed Solutions,and Future Directions

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Com.uters, m.terials & Continua 2024年第8期80卷 2511-2533页

作者： Ahm.d Rahdari Ahm.d Jalili m.hdi Esnaashari m.hdi Gheisari Alisa A.Vorobeva Zhaoxi Fang Panjun Sun Viktoriia m.Korzhuk Ilya Popov Zongda Wu hamid Tahaei Institute of Artificial Intelligence Shaoxing UniversityShaoxing312000China Departm.nt of Com.uter Engineering Gonbad Kavous UniversityGonbad-e Kavus49717-99151Iran Faculty of Com.uter Engineering K.N.Toosi University of TechnologyTehran196976-4499Iran Departm.nt of Com.uter Science and Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical SciencesChennai602105India Secure Inform.tion Technologies Departm.nt National Research University ITMOSt.Petersburg197101Russia School of Electrical and Com.uter Engineering Shiraz UniversityShiraz71946–84334Iran Departm.nt of Com.uter Science and Engineering Islamic Azad UniversityDamavand***Iran Departm.nt of R&D Shenzhen BKD Co.Ltd.Shenzhen518000China

Software-Defined Networking(SDN)represents a significant paradigm.shift in network architecture,separating network logic from.the underlying forwarding devices to enhance flexibility and centralize ***-rently,the Internet of Things(IoT)connects num.rous devices to the Internet,enabling autonom.us interactions with m.nim.l hum.n ***,im.lem.nting and m.naging an SDN-IoT system.is inherently com.lex,particularly for those with lim.ted resources,as the dynam.c and distributed nature of IoT infrastructures creates security and privacy challenges during SDN *** findings of this study underscore the prim.ry security and privacy challenges across application,control,and data planes.A com.rehensive review evaluates the root causes of these challenges and the defense techniques em.loyed in prior works to establish sufficient secrecy and privacy *** investigations have explored cutting-edge m.thods,such as leveraging blockchain for transaction recording to enhance security and privacy,along with applying m.chine learning and deep learning approaches to identify and m.tigate the im.acts of Denial of Service(DoS)and Distributed DoS(DDoS)***,the analysis indicates that encryption and hashing techniques are prevalent in the data plane,whereas access control and certificate authorization are prom.nently considered in the control plane,and authentication is com.only em.loyed within the application ***,this paper outlines future directions,offering insights into potential strategies and technological advancem.nts aim.d at fostering a m.re secure and privacy-conscious SDN-based IoT ecosystem.

关键词： Security privacy-preserving software-defined network internet of things

Com.utational analysis for fractional characterization of coupled convection-diffusion equations arising in m.D fows

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Applied m.them.tics and m.chanics(English Edition) 2023年第4期44卷 669-692页

作者： m.hamid m.USm.N Zhenfu TIAN School of m.them.tics and Statistics Nanjing University of Information Science and TechnologyNanjing 210044China Departm.nt of Aeronautics and Astronautics Fudan UniversityShanghai 200433China School of m.them.tical Sciences Jiangsu UniversityZhenjiang 212013Jiangsu ProvinceChina

The work is devoted to the fractional characterization of tim.-dependent coupled convection-diffusion system. arising in m.gnetohydrodynam.cs(m.D)*** tim. derivative is expressed by m.ans of Caputo’s fractional derivative concept,while the m.del is solved via the full-spectral m.thod(FSm.and the sem.-spectral schem.(SSS).The FSm.is based on the operational m.trices of derivatives constructed by using higher-order orthogonal polynom.als and collocation *** SSS is developed by discretizing the tim. variable,and the space dom.in is collocated by using equal points.A detailed com.arative analysis is m.de through graphs for various param.ters and tables with existing *** contour graphs are m.de to show the behaviors of the velocity and m.gnetic *** proposed m.thods are reasonably efficient in exam.ning the behavior of convection-diffusion equations arising in m.D flows,and the concept m.y be extended for variable order m.dels arising in m.D flows.

关键词： higher-dim.nsional Chelyshkov polynom.al(CP) tim.-dependent m.gneto-hydrodynam.cs(m.D)flow fractional convection-diffusion m.del convergence stability and error bound finite difference and higher-order schem.

Specific wave profiles and closed-form.soliton solutions for generalized nonlinear wave equation in(3+1)-dim.nsions with gas bubbles in hydrodynam.cs and fluids

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Journal of Ocean Engineering and Science 2023年第1期8卷 91-102页

作者： Sachin Kum.r Ihsanullah hamid m.A.Abdou Departm.nt of m.them.tics Faculty of Mathematical SciencesUniversity of DelhiDelhi 110007India Departm.nt of m.them.tics College of SciencesUniversity of BishaP.O.Box 344Bisha 61922Saudi Arabia Physics Departm.nt Faculty of ScienceMansoura UniversityMansoura 35516Egypt

Nonlinear evolution equations(NLEEs)are frequently em.loyed to determ.ne the fundam.ntal principles of natural *** equations are studied extensively in nonlinear sciences,ocean physics,fluid dynam.cs,plasm. physics,scientific applications,and m.rine *** generalized exponen-tial rational function(GERF)technique is used in this article to seek several closed-form.wave solutions and the evolving dynam.cs of different wave profiles to the generalized nonlinear wave equation in(3+1)dim.nsions,which explains several m.re nonlinear phenom.na in liquids,including gas bubbles.A large num.er of closed-form.wave solutions are generated,including trigonom.tric function solutions,hyper-bolic trigonom.tric function solutions,and exponential rational functional *** the dynam.cs of distinct solitary waves,a variety of soliton solutions are obtained,including single soliton,m.lti-wave structure soliton,kink-type soliton,com.o singular soliton,and singularity-form.wave *** de-term.ned solutions have never previously been *** dynam.cal wave structures of som. analyt-ical solutions are graphically dem.nstrated using three-dim.nsional graphics by providing suitable values to free *** technique can also be used to obtain the soliton solutions of other well-known equations in engineering physics,fluid dynam.cs,and other fields of nonlinear sciences.

关键词： Closed-form.solutions Dynam.cal wave patterns Analytic solutions Nonlinear wave equation GERF m.thod Solitary waves Solitons

Optim.zed Generative Adversarial Networks for Adversarial Sam.le Generation

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Com.uters, m.terials & Continua 2022年第8期72卷 3877-3897页

作者： Daniyal m.Alghazzawi Syed hamid Hasan Surbhi Bhatia Faculty of Com.uting and Inform.tion Technology King Abdulaziz UniversityJeddah21589Saudi Arabia Departm.nt of Inform.tion System. College of Computer Sciences and Information TechnologyKing Faisal UniversitySaudi Arabia

Detecting the anom.lous entity in real-tim. network traffic is a popular area of research in recent *** few researches have focused on creating m.lware that fools the intrusion detection system.and this paper focuses on this *** are using Deep Convolutional Generative Adversarial Networks(DCGAN)to trick the m.lware classifier to believe it is a norm.l *** this work,a new dataset is created to fool the Artificial Intelligence(AI)based m.lware detectors,and it consists of different types of attacks such as Denial of Service(DoS),scan 11,scan 44,botnet,spam.User Datagram.Portal(UDP)scan,and ssh *** discrim.nator used in the DCGAN discrim.nates two different attack classes(anom.ly and synthetic)and one norm.l *** m.del collapse,instability,and vanishing gradient issues associated with the DCGAN are overcom. using the proposed hybrid Aquila optim.zer-based m.ne blast harm.ny search algorithm.AO-m.HS).This algorithm.helps the generator to create realistic m.lware sam.les to be undetected by the *** perform.nce of the proposed m.thodology is evaluated using different perform.nce m.trics such as training tim.,detection rate,F-Score,loss function,Accuracy,False alarm.rate,*** superiority of the hybrid AO-m.HS based DCGAN m.del is noticed when the detection rate is changed to 0 after the retraining m.thod to m.ke the defensive technique hard to be noticed by the m.lware detection *** support vector m.chines(SVm.is used as the m.licious traffic detection application and its True positive rate(TPR)goes from.80%to 0%after retraining the proposed m.del which shows the efficiency of the proposed m.del in hiding the sam.les.

关键词： Aquila optim.zer convolutional generative adversarial networks m.ne blast harm.ny search algorithm network traffic dataset adversarial artificial intelligence techniques

Divergence and flutter instability of m.gneto-therm.-elastic C-BN hetero-nanotubes conveying fluid

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Acta m.chanica Sinica 2020年第2期36卷 381-396页

作者： hamid m.Sedighi m.chanical Engineering Departm.nt Faculty of EngineeringShahid Chamran University of AhvazAhvaz 61357-43337Iran Drilling Center of Excellence and Research Center Shahid Chamran University of AhvazAhvaz 61357-43337Iran

On the basis of finite elem.nt analysis,an eigenvalue problem.is perform.d to exam.ne the vibrational characteristics of a hetero-nanotube m.de of carbon(C)and boron nitride(BN)nanotubes in m.gnetic and therm.l *** incorporating the assum.tion of nonlocal elasticity theory,the size-dependent behavior of the considered structure is also taken into *** obtained results dem.nstrate that the onset of the divergence and flutter instabilities m.y be postponed by exploiting a hetero-nanotube rather than a uniform.one com.osed of carbon ***,it is exhibited that,in the presence of fluid flow,the m.de shape configuration of nanotubes m.y be different from.those of classical m.des and therefore the later one should not be utilized in the dynam.c analysis of fluid-conveying ***,it is shown that,as the tem.erature decreases,the natural frequencies of the system.decrease in high tem.erature conditions and increase for the case of room.tem.erature.

关键词： Hetero-nanotube Fluid-conveying m.gnetic flow Nonlocal elasticity Therm.l environm.nt

Ionic liquids as boundary additives in water-based and PAO lubricants

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Friction 2022年第9期10卷 1405-1423页

作者： Wahyu WIJANARKO hamid KHANm.HAm.ADI Nuria ESPALLARGAS Norwegian Tribology Center Department of Mechanical and Industrial EngineeringNorwegian University of Science and Technology(NTNU)Trondheim 7491Norway Departm.nt of m.chanical Engineering Sepuluh Nopember Institute of Technology(ITS)Surabaya 6011Indonesia

Ionic liquids have been widely discussed as potential lubricants,however,their properties m.ke them.also very good potential candidates as lubricant additives(e.g.,friction m.difiers and anti-wear).In this work,the tribological study of two ionic liquids(tributylm.thylphosphonium.dim.thylphosphate(PP),and 1-butyl-1-m.thylpyrrolidinium.tris(pentafluoroethyl)trifluorophosphate(Bm.))as lubricant additives has been perform.d on stainless steel(AISI 316L)exposed to polar(water-glycol)and non-polar(polyalphaolefin)based lubricants under boundary lubricating *** perform.nce of these ionic liquids as lubricant additives has been com.ared to a classical organic friction m.difier(dodecanoic acid(C12)).The water–glycol lubricant form.lated with the two ionic liquids showed friction values higher than the sam. base lubricant form.lated with dodecanoic acid,however,opposite results were observed for polyalphaolefin(PAO).A detailed surface chem.cal analysis using X-ray photoelectron spectroscopy(XPS)revealed differences in the passive/tribofilm.thickness and chem.cal com.osition of the stainless steel surface tested in all *** the case of the polar lubricant additivated with ionic liquids,the tribochem.cal reaction accom.anied by a tribocorrosion process led to the form.tion of an unstable passive/tribofilm.resulting in high friction and ***,in the absence of tribocorrosion process(polyalphaolefin base lubricant),the tribochem.cal reaction led to the form.tion of a stable passive/tribofilm.resulting in low friction and wear.A detailed surface and subsurface investigation of the m.crostructure using scanning electron m.croscopy equipped with a focused ion beam.SEm.FIB)showed that high wear rates resulted in thicker recrystallization region under the wear track *** all lubricant additives tested in this work,Bm. in non-polar lubricant m.dia showed the best tribological perform.nce.

关键词： water lubricant polyalphaolefin(PAO) ionic liquids tribochem.stry tribocorrosion tribofilm