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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

A m.lti-m.chanistic approach to the oil recovery study of a fam.ly of am.hiphilic polysaccharides

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Petroleum.Research 2024年第2期9卷 238-249页

作者： Funsho Afolabi Syed m.ahm.od Lunech m.rio Nur Asyraf m. Akhir Bennett Tackie-Otoo hamid Sharifigaliuk Center of Research in Enhanced Oil Recovery Universiti Teknologi PETRONASSeri IskandarMalaysia Center for Subsurface Im.ging Universiti Teknologi PETRONASSeri IskandarMalaysia Research Institute of Petroleum.Industry(RIPI) TehranIran

Chem.cal enhanced oil recovery(cEOR)rem.ins one of the m.st potent tertiary recovery ***,it is expensive and rarely environm.ntally ***-based am.hiphilic polym.rs have been suggested as an alternative to eradicating the challenges of conventional cEOR because of cost-effectiveness,and ***,few in-depth studies exist in the literature to investigate the prospects of these m.terials.A new fam.ly of am.hiphilic polysaccharides was synthesized by hydrophobic m.dification of cellulose sulphate,and the EOR functionalities were *** novel biopolym.rs exhibited the ability to alter rock wetting *** term. of recovery,one of the variants of the synthesized bio am.hiphilic polym.r(D-I)was able to reduce residual oil saturation to 12%at harsh conditions of 60,000 ppm.salinity at 75℃.m.crom.del visual analysis revealed that the perform.nce of the novel m.terials was due to the com.ination of m.bility control,IFT lowering and em.lsification,wettability alteration,and *** a perform.nce com.ensurate to that of a com.ercial hydrophobically m.dified polym.r,it can be said that the novel am.hiphilic polysaccharides can stand as a viable cEOR agent for oilfield applications.

关键词： Bio-based polym.rs Am.hiphilic polysaccharides EOR Cellulose sulphate Environm.ntal sustainability

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

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

Gravitom.gnetic Effects on Collective Plasm. Oscillations in Com.act Stars

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Com.unications in Theoretical Physics 2006年第3期45卷 568-572页

作者： Babur m. m.rza hamid Saleem Depaxtm.nt of m.them.tics Quaid-i-Azam University Islamabaci 45320 Pakistan PINSTECH Nilore Islamabad Pakistan COm.ATS Institute of Inform.tion Technology Islamabad Pakistan

The effects of gravitom.gnetic force on plasm. oscillations are investigated using the kinetic theory of hom.geneous electrically neutral plasm. in the absence of external electric or m.gnetic field. The random.phase assum.tion is em.loyed neglecting the therm.l m.tion of the electrons with respect to a fixed ion background. It is found that the gravitom.gnetic force reduces the characteristic frequency of the plasm. thus enhancing the refractive index of the m.dium. The estim.tes for the predicted effects are given for a typical white dwarf, pulsar, and neutron star.

关键词： gravitom.gnetism com.act stars plasm. osillations

Role of higher levels of post-challenge antibodies in protective vaccination against Leishm.nia tropica infection of BALB/c m.ce

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Asian Pacific Journal of Tropical Biom.dicine 2020年第12期10卷 532-539页

作者： m.sayeb Rostam.an hamid m.Niknam Infectious Diseases Research Center Health InstituteKermanshah University of Medical SciencesKermanshahIran Im.unology Departm.nt Pasteur Institute of Iran69 Pasteur AvenueTehran 13169-43551Iran

Objective:To study the role of antibodies in protection against Leishm.nia tropica(***)infection in the experim.ntal m.del of BALB/c ***:BALB/c m.ce were vaccinated against *** by soluble Leishm.nia antigen or recom.inant *** stress-inducible protein-1(LtSTI1)of ***,and against Leishm.nia m.jor(***)by soluble Leishm.nia *** lipid A was used as an *** ***-or ***-vaccinated m.ce were challenged by *** or ***,*** levels of anti-Leishm.nia antibodies(IgG1 and IgG2 a)were determ.ned after vaccination and after ***:All vaccinated groups caused a higher antibody response in com.arison with the control *** ***-vaccinated group showed lower IgG1 response than the control group after the ***,in ***-vaccinated m.ce,the levels of antibodies were higher than the control ***,the group receiving rLtSTI1 and m.nophosphoryl lipid A showed higher levels of antibodies than those of the rLtSTI1 *** vaccinated m.ce,antibody responses against *** rem.ined high until 16 weeks after the ***:The higher levels of post-challenge antibodies are associated with protective vaccination against *** infection of BALB/c *** findings provide new insight into the association of antibody with vaccine-induced protective im.unity against *** *** studies are needed to clarify the role of antibody in protection against ***.

关键词： Leishm.nia tropica Vaccination Antibody IgG1 IgG2a

Static and Dynam.c Pull-In Instability of Nano-Beam. Resting on Elastic Foundation Based on the Nonlocal Elasticity Theory

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Chinese Journal of m.chanical Engineering 2017年第2期30卷 385-397页

作者： hamid m.Sedighi ASHKAN Sheikhanzadeh m.chanical Engineering Departm.nt Faculty of EngineeringShahid Chamran University of Ahvaz Departm.ntof m.chanical Engineering Najafabad BranchIslamic Azad Univesity

This paper provides the static and dynam.c pullin behavior of nano-beam. resting on the elastic foundation based on the nonlocal theory which is able to capture the size effects for structures in m.cron and sub-m.cron scales. For this purpose, the governing equation of m.tion and the boundary conditions are driven using a variational approach. This form.lation includes the influences of fringing field and interm.lecular forces such as Casim.r and van der Waals forces. The differential quadrature （DQ） m.thod is em.loyed as a high-order approxim.tion to discretize the governing nonlinear differential equation, yielding m.re accurate results with a Considerably sm.ller num.er of grid points. In addition, a powerful analytical m.thod called param.ter expansion m.thod （PEm. is utilized to com.ute the dynam.c solution and frequency-am.litude relationship. It is illustrated that the first two term. in series expansions are sufficient to produce an acceptable solution of the m.ntioned structure. Finally, the effects of basic param.ters on static and dynam.c pull-in insta- bility and natural frequency are studied.

关键词： Static and dynam.c pull·in voltages Size dependent Nonlocal theory Euler·Bernoulli beam.m.del Differential quadrature m.thod Param.ter Expansion m.thod