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Physical Layer Authentication Using Ensemble Learning Technique in Wireless Communications

Computers, Materials & Continua 2022年第12期73卷 4489-4499页

作者： Muhammad Waqas Shehr Bano Fatima Hassan Shanshan Tu Ghulam abbas Ziaul Haq abbas Engineering Research Center of Intelligent Perception and Autonomous Control Faculty of Information TechnologyBeijing University of TechnologyBeijing100124China Faculty of Computer Science and Engineering GIK Institute of Engineering Sciences and TechnologyTopi23460Pakistan School of Engineering Edith Cowan UniversityJoondalup Perth6027WA Australia Faculty of Electrical Engineering GIK Institute of Engineering Sciences and TechnologyTopi23460Pakistan

Cyber-physical wireless systems have surfaced as an important data communication and networking research *** is an emerging discipline that allows effective monitoring and efficient real-time communication between the cyber and physical worlds by embedding computer software and integrating communication and networking *** to their high reliability,sensitivity and connectivity,their security requirements are more comparable to the Internet as they are prone to various security threats such as eavesdropping,spoofing,botnets,man-in-the-middle attack,denial of service(DoS)and distributed denial of service(DDoS)and *** methods use physical layer authentication(PLA),themost promising solution to detect ***,the cyber-physical systems(CPS)have relatively large computational requirements and require more communication resources,thus making it impossible to achieve a low latency *** methods perform well but only in stationary *** have extracted the relevant features from the channel matrices using discrete wavelet transformation to improve the computational time required for data processing by considering mobile *** features are fed to ensemble learning algorithms,such as AdaBoost,LogitBoost and Gentle Boost,to classify *** authentication of the received signal is considered a binary classification *** transmitted data is labeled as legitimate information,and spoofing data is illegitimate ***,this paper proposes a threshold-free PLA approach that uses machine learning algorithms to protect critical data from spoofing *** detects the malicious data packets in stationary scenarios and detects them with high accuracy when receivers are *** proposed model achieves better performance than the existing approaches in terms of accuracy and computational time by decreasing the processing time.

关键词： Physical layer authentication machine learning cyber-physical systems security

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Different approaches for patent ductus arteriosus in premature infants using acetaminophen

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World Journal of Pediatrics 2022年第4期18卷 243-250页

作者： Aimann Surak Amish Jain abbas Hyderi Northern Alberta Neonatal Program Royal Alexandra Hospital Site NICU DTC 5027Stollery Children HospitalUniversity of Alberta10240 Kingsway NWEdmontonAB T5H 3V9Canada Department of Pediatrics Mount Sinai HospitalUniversity of TorontoTorontoONCanada

Background Acetaminophen use for pharmacological treatment of hemodynamically significant patent ductus arteriosus(hsPDA)in preterm infants is becoming more popular with emerging evidence that it is effective as well as safe alternative for other agents used to close *** sources We performed a narrative review of literature about pharmacological treatment of PDA using *** Acetaminophen was used as a prophylaxis,symptomatic,targeted,and a rescue *** It appears that acetaminophen could be used in different approaches to close the ***-term outcomes of acetaminophen exposure early in life still lack certainty.

关键词： Acetaminophen Ligation Patent ductus arteriosus Preterm

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Fuzzy rough sets in Sostak sense

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Applied Mathematics(A Journal of Chinese Universities) 2022年第4期37卷 563-582页

作者： Ismail Ibedou S.E.abbas Department of Mathematics Faculty of ScienceBenha UniversityBenhaEgypt Department of Mathematics Faculty of ScienceSohag UniversitySohagEgypt

In this paper,we defined the fuzzy operator Φ_(λ) in a fuzzy ideal approximation space(X,R,I)associated with a fuzzy rough set λ in Sostak *** with Φ_(λ),there are fuzzy ideal interior and closure operators int_(Φ)^(λ) and cl_(Φ)^(λ),respectively.r-fuzzy separation axioms,r-fuzzy connectedness and r-fuzzy compactness in fuzzy ideal approximation spaces are defined and compared with the relative notions in r-fuzzy approximation *** are many differences when studying these notions related with a fuzzy ideal different from studying these notions in usual fuzzy approximation ***,using a fuzzy grill,we will get the same results given during the context.

关键词： fuzzy rough set fuzzy approximation space fuzzy ideal approximation space r-fuzzy separation axioms r-fuzzy connectedness r-fuzzy compactness

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Effect of copper nanoparticles on thermal behavior of two-phase argon-copper nanofluid flow in rough nanochannels with focusing on the interface properties and heat transfer using molecular dynamics simulation

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Chinese Journal of Chemical Engineering 2022年第2期35卷 344-350页

作者： Shabnam Ghahremanian abbas abbassi Zohreh Mansoori Davood Toghraie Department of Mechanical Engineering Amirkabir University of TechnologyTehranIran Department of Mechanical Engineering Amirkabir University of TechnologyHafez Ave.P.O.Box 15916-34311TehranIran Energy Research Center Amirkabir University of TechnologyHafez Ave.P.O.Box 15916-34311TehranIran Department of Mechanical Engineering Khomeinishahr BranchIslamic Azad UniversityKhomeinishahrIran

A comparison between the efficacy of surface boundary structure and presence of nanoparticles on the condensation two-phase flow inside rough nanochannels has been accomplished by applying molecular dynamics procedure to evaluate the thermal conductivity and flow *** is performed in a computational region with two copper walls containing rectangular rough elements under different saturated *** main properties of liquid–vapor interface including density and the number of liquid atoms,are *** is observed that the density profile is more affected by nanoparticles than the ***,compared to the condensation of nanofluid in a smooth nanochannel,the rough wall causes a greater drop in the temperature at the early time steps and by development of liquid films,effects of the wall roughness *** the first of the condensation process,adding nanoparticle causes that transferring argon particles to the liquid phase increases with a steeper ***,heat current autocorrelation function(HCACF)for nanofluid condensation flow over considered correlation time is analyzed and following that the thermal conductivity for different saturated conditions is *** has been represented that at lower temperatures the roughness makes more significant influence on the heat transfer of two-phase flow,while at higher temperatures the importance of nanoparticles prevails.

关键词： Two-phase flow Nanofluid Roughness element Thermal conductivity

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BEESO:Multi-strategy Boosted Snake-Inspired Optimizer for Engineering Applications

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Journal of Bionic Engineering 2023年第4期20卷 1791-1827页

作者： Gang Hu Rui Yang Muhammad abbas Guo Wei Department of Applied Mathematics Xi’an University of TechnologyXi’an710054China School of Computer Science and Engineering Xi’an University of TechnologyXi’an710048China Department of Mathematics University of SargodhaSargodha40100Pakistan University of North Carolina at Pembroke PembrokeNC28372USA

This paper presents an efficient enhanced snake optimizer termed BEESO for global optimization and engineering *** a newly mooted meta-heuristic algorithm,snake optimizer(SO)mathematically models the mating characteristics of snakes to find the optimal *** has a simple structure and offers a delicate balance between exploitation and ***,it also has some shortcomings to be *** proposed BEESO consequently aims to lighten the issues of lack of population diversity,convergence slowness,and the tendency to be stuck in local optima in *** presentation of Bi-Directional Search(BDS)is to approach the global optimal value along the direction guided by the best and the worst individuals,which makes the convergence speed *** increase in population diversity in BEESO benefits from Modified Evolutionary Population Dynamics(MEPD),and the replacement of poorer quality individuals improves population *** Elite Opposition-Based Learning(EOBL)provides improved local exploitation ability of BEESO by utilizing solid solutions with good *** performance of BEESO is illustrated by comparing its experimental results with several algorithms on benchmark functions and engineering ***,the results of the experiment are analyzed again from a statistical point of view using the Friedman and Wilcoxon rank sum *** findings show that these introduced strategies provide some improvements in the performance of SO,and the accuracy and stability of the optimization results provided by the proposed BEESO are competitive among all *** conclude,the proposed BEESO offers a good alternative to solving optimization issues.

关键词： Snake optimizer Bi-Directional Search Evolutionary Population Dynamics Elite Opposition-Based Learning Strategy Mechanical optimization design

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Securing Copyright Using 3D Objects Blind Watermarking Scheme

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Computers, Materials & Continua 2022年第9期72卷 5969-5983页

作者： Hussein Abulkasim Mona Jamjoom Safia abbas Faculty of Science New Valley UniversityEl-Kharga 72511Egypt Department of Computer Sciences College of Computer and Information SciencePrincess Nourah Bint Abdulrahman UniversityRiyadh 11671Saudi Arabia

Recently,securing Copyright has become a hot research topic due to rapidly advancing information *** a host cover,watermarking methods are used to conceal or embed sensitive information messages in such a manner that it was undetectable to a human observer in contemporary *** media covers may often take any form,including audio,video,photos,even DNA data *** this work,we present a new methodology for watermarking to hide secret data into 3-D *** technique of blind extraction based on reversing the steps of the data embedding process is *** implemented technique uses the features of the 3-D object vertex’discrete cosine transform to embed a grayscale image with high *** coefficient of vertex and the encrypted picture pixels are used in the watermarking ***,the extraction approach is fully blind and is dependent on the backward steps of the encoding procedure to get the hidden *** distance,Euclidean distance,Manhattan distance,and the Cosine distance are used to evaluate and test the performance of the proposed *** visibility and imperceptibility of the proposed method are assessed to show the efficiency of our work compared to previous corresponding methods.

关键词： Discrete cosine transform 3-D object copyright watermarking

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Experimental Investigation of Performance Characteristics of PZT-5A with Application to Fault Diagnosis

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Structural Durability & Health Monitoring 2022年第4期16卷 307-321页

作者： Saqlain abbas Zulkarnain abbas Yanping Zhu Waqas Tariq Toor Xiaotong Tu Department of Mechanical Engineering University of Engineering and Technology LahoreNarowal CampusNarowal51600Pakistan Institute of Vibration Shock and NoiseState Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghai200240China Department of Mechanical Engineering National Fertilizer Cooperation(NFC)Institute of Engineering and TechnologyMultan61000Pakistan Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityShanghai200240China Department of Electrical Engineering University of Engineering and Technology LahoreNarowal CampusNarowal51600Pakistan The School of Informatics Xiamen UniversityXiamen361005China

In the previous couple of decades,techniques to reap energy and empower low voltage electronic devices have received outstanding *** of the methods based on the piezoelectric effect to harvest the energy from ambient vibrations have been ***’s an absence of experiment-based investigation which incorporates the microstructure analysis and crystal morphology of those energy harvest home ***,the impact of variable mechanical and thermal load conditions has seldom been studied within the previous literature to utilize the effectiveness of those materials in several practical applications like structural health monitoring(SHM),*** the proposed research work,scanning electron microscope(SEM)and energy dispersive x-ray(EDX)analysis are performed to examine the inside crystal morphology of PZT-5A and ensure the quality of the piezoelectric ***,the performance of piezoelectric vibration-based energy harvester has been investigated in the second phase of current research work under the variable mechanical and thermal load conditions through a regular series of ***’s been found that the output voltage of piezoelectric sensors will increase by increasing the applied load,whereas a decreasing trend in output voltage is noticed by increasing the applied temperature,resistance and *** the third part,a measuring setup is developed in the laboratory to further investigate the effectiveness of PZT-5A in practical applications such as electromechanical impedance(EMI)based structural health monitoring under the controlled heating ***,this analysis not only evaluates the performance of PZT sensors under the variable operating conditions but also encourages developing a temperature compensation approach in EMI-based SHM.

关键词： Piezoelectric energy harvester crystal morphology scanning electron microscope structural health monitoring electromechanical impedance

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Effect of NiO-NiCr2O4 nano-oxides on the microstructural,mechanical and corrosion properties of Ni-coated carbon steel

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International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1078-1092页

作者： Saeed Mojallal Hurieh Mohammadzadeh abbas Aghaeinejad-Meybodi Robabeh Jafari Materials Engineering Department Faculty of EngineeringUrmia UniversityUrmiaIran Chemical Engineering Department Faculty of EngineeringUrmia UniversityUrmiaIran

Pure Ni and its composites with different percentages of Ni-Cr nano-oxides were coated over carbon steel to assess the coating features and mechanical and corrosion behavior.A nano-oxide composite of Ni-Cr was first synthesized through chemical coprecipitation with uniform distribution *** was employed to coat pure Ni and Ni-(Ni-Cr)oxides(10,20,30,40,and 50 g/L)on the steel *** electron microscope and field emission scanning electron microscope were adopted to examine the microstructure of powders and coatings,and X-ray diffraction analysis was employed to study the chemical *** microhardness,thickness,and wear resistance of the coatings were assessed,polarization and electrochemical impedance spectroscopy(EIS)tests were conducted to analyze the corrosion behavior,and the corresponding equivalent circuit was *** showed flawless and crack-free coatings for all samples and uniform distribution of nano-oxides in the Ni matrix for the samples of 10-30 g/*** oxides were detected at high *** microhardness(HV 661),thickness(116μm),and wear resistance of coatings were found at 30 g/L.A three-loop equivalent circuit corresponded satisfactorily to all EIS *** corrosion resistance increased with the nano-oxide concentration of up to 30 g/L but decreased at 40 g/*** sample of 50 g/L showed the best corrosion resistance.

关键词： nanocomposite powder electroplating coating corrosion resistance electrochemical impedance spectroscopy wear resistance

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Recent Advances and Challenges Toward Application of Fibers and Textiles in Integrated Photovoltaic Energy Storage Devices

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Nano-Micro Letters 2023年第3期15卷 190-247页

作者： Amjid Rafique Isabel Ferreira Ghulam abbas Ana Catarina Baptista CENIMAT|I3N Department of Materials ScienceSchool of Science and TechnologyNOVA University LisbonCampus de Caparica2829‑516 CaparicaPortugal

Flexible microelectronic devices have seen an increasing trend toward development of miniaturized,portable,and integrated devices as wearable electronics which have the requirement for being light weight,small in dimension,and *** three-dimensional(3D)and two-dimensional(2D)electronics gadgets fail to effectively comply with these necessities owing to their stiffness and large *** have come up with a new family of one-dimensional(1D)flexible and fiber-based electronic devices(FBEDs)comprising power storage,energy-scavenging,implantable sensing,and flexible displays ***,development and manufacturing are still a challenge owing to their small radius,flexibility,low weight,weave ability and integration in textile *** paper will provide a detailed review on the importance of substrates in electronic devices,intrinsic property requirements,fabrication classification and applications in energy harvesting,energy storage and other flexible electronic ***-and textile-based electronic devices for bulk/scalable fabrications,encapsulation,and testing are reviewed and presented future research ideas to enhance the commercialization of these fiber-based electronics devices.

关键词： Flexible electronics Electronic textiles Energy harvesting Supercapacitors Photovoltaic devices

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Characterization of semisolid deformation behavior of a high Zr-containing WE magnesium alloy

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Rare Metals 2022年第12期41卷 4201-4208页

作者： Masoud Moradjoy-Hamedani abbas Zarei-Hanzaki Seyed Mahmood Fatemi School of Metallurgy and Materials Engineering College of EngineeringUniversity of TehranTehran 515-14395Iran School of Mechanical Engineering Shahid Rajaee Teacher Training UniversityTehran 136-16785Iran

The effects of temperature and strain rate on the semisolid deformation behavior of a high Zr WE54 magnesium alloys were studied at temperatures of 570,595 and 620℃.A flow stress peak was appeared during deformation of the feedstock experimental material at deformation conditions of 570℃,0.010 and 0.100 s-1,and 595℃,0.100 *** latter results were connected to the occurrence of dynamic recrystallization in solid ***,these conditions were gauged to be able to activate"lubricated flow"*** 570℃and strain rate of 0.001 s-1as well as 595℃and rates of 0.010 and 0.001 s^(-1),the flow stress increases and reaches a plateau,where dynamic recovery is considered as the dominant ***,at 620℃under all the strain rates,the flow stress drops for a limited strain range and then increases *** results show that as the liquid removes from the boundaries between the solid parts,the densification of the globules occurs at higher strains,causing an increase in the flow *** analysis points out that the feedstock material exhibits a lower flow stress than as-cast alloy associating with a modified morphology of Zr particles after deformation.

关键词： Mg-RE alloy Feedstock Semisolid deformation Liquid flow

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