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f.xed Point Theorems of.Heg.dus Contraction Mapping.in Some Types of.Distance Spaces

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International Journal of.Modern Nonlinear Theory and Application 2012年第3期1卷 93-96页

作者： M. A. Ahmed f. M. Zeyada g. f. hassan Department of.Mathematics Faculty of Science Assiut University Assiut Egypt

In the present paper, we prove some f.xed point theorems of.Heg.dus contraction in some types of.distance spaces, dislocated metric space, lef. dislocated metric space, rig.t dislocated metric space and dislocated qua... 详细信息

关键词： Distance Space Dislocated Metric Spaces Quasi-Metric Spaces Dislocated Quasi-Metric Spaces Contraction

The g.obal stability and optimal control of.the COVID-19 epidemic model

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International Journal of.Biomathematics 2024年第1期17卷 1-28页

作者： f.ng.heng.Chien hassan Saberi Nik Mohammad Shiraziant J.f.g.mez-Ag.ilar School of.f.nance and Accounting.f.zhou University of.International Studies and Trade f.zhou 352020 P.R.China f.culty of.Business City university of Macao Macao 999078P.R.China Department of.Mathematics and Statistics University of.Neyshabur NeyshaburIran CONACyT-Tecnolog.co Nacional de Mécico/CENIDET Interior Internado Palmira S/N Col.Palmira C.P.62490CuernavacaMorelosMérico

This paper considers stability analysis of.a Susceptible-Exposed-Inf.cted-Recovered-Virus(SEIRV)model with nonlinear incidence rates and indicates the severity and weakness of.control f.ctors f.r disease *** Lyapunov f.nction using.Volterra-Lyapunov matrices makes it possible to study the g.obal stability of.the endemic equilibrium *** optimal control strateg. is proposed to prevent the spread of.coronavirus,in addition to g.vernmental *** objective is to minimize tog.ther with the quantity of.inf.cted and exposed individuals while minimizing.the total costs of.treatment.A numerical study of.the model is also carried out to investig.te the analytical results.

关键词： g.obal stability SEIRV epidemic model dynamical systems Volterra-Lyapunov stability optimal control

Assessment of.liquef.ction potential based on shear wave velocity:Strain energ. approach

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Journal of.Rock Mechanics and g.otechnical Eng.neering 2024年第9期16卷 3733-3745页

作者： Mohammad hassan Baziar Mahdi Alibolandi School of.Civil Eng.neering Iran University of Science and TechnologyTehran16846-13114Iran

Liquef.ction assessment based on strain energ. is sig.if.cantly superior to conventional stress-based *** main purpose of.the present study is to investig.te the correlation between shear wave velocity and strain energ. capacity of.silty *** dissipated energ. until liquef.ction occurs was calculated by analyzing.the results of.three series of.comprehensive cyclic direct simple shear and triaxial tests on Ottawa f.5,Nevada,and f.roozkuh sands with varying.silt content by weig.t and relative ***,the shear wave velocity of.each series was obtained using.bender element or resonant column ***,f.r the f.rst time,a liquef.ction trig.ering.criterion,relating.to ef.ective overburden normalized liquef.ction capacity energ.(WL=s’c)to ef.ective overburden stresscorrected shear wave velocity(eVs1)has been *** accuracy of.the proposed criteria was evaluated using.in situ *** results conf.rm the ability of.shear wave velocity as a disting.ishing.parameter f.r separating.liquef.ed and non-liquef.ed soils when it is calculated ag.inst liquef.ction capacity energ.(WL=s’c).However,the proposed WL=s’c-Vs1 curve,similar to previously proposed cyclic resistance ratio(CRR)-Vs1 relationships,should be used conservatively f.r f.elds vulnerable to liquef.ction-induced lateral spreading.

关键词： Liquef.ction Strain energ. capacity Shear wave velocity Cyclic triaxial test Cyclic direct simple shear test Resonant column test Bender element test

Sedimentary f.cies analysis of.a thin-bed-dominated turbidite succession in the Miocene Temburong.f.rmation,Kampung.Bebuloh,Labuan Island,Malaysia

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Journal of.Palaeog.og.aphy 2024年第3期13卷 401-429页

作者： f.rah Syaf.ra Burhanuddin Meor Hakif.Amir hassan Department of.g.olog. Faculty of ScienceUniversiti Malaya50603 Kuala LumpurMalaysia

Thin-bedded turbidites are important hydrocarbon-bearing.reservoirs in many mature f.elds throug.out the *** type of.turbidite depositional setting.strong.y inf.uences vertical and horizontal continuity of.the ***,disting.ishing.between lobe and levee associated thin-bedded turbidites remains challeng.ng.due to their g.nerally similar f.cies *** study aims to contribute some insig.ts to this problem by conducting.a detailed bed-scale f.cies analysis on the Early Miocene Temburong.f.rmation exposed at Kampung.Bebuloh,Labuan Island,Malaysia,which may uncover f.atures that can help in dif.erentiating.between both depositional *** f.cies are recog.ized in the Temburong.f.rmation,which are interpreted as low density turbidites(f.-f.),hybrid event beds(f.),and sustained turbidites(f.).Detailed f.cies and ichnolog. analysis reveal f.atures which are consistent with a lobe f.ing. deposit rather than leveeassociated environment interpretation,including.tabular bed g.ometries,presence of.hybrid event beds,and the absence of.thick-bedded channel-f.ll *** f.cies associations are identif.ed and interpreted as representing.sub-environments within an overall lobe depositional setting.A diverse trace f.ssil assemblag.,comprising.the Nereites ichnof.cies is consistent with a deep marine *** identif.cation of.the Paleodictyon and Nereites sub-ichnof.cies indicates a distal turbidite system setting.most likely lobe *** on the thick accumulation of.f.2 and f.3 and no distinct observable vertical trend,the Early Miocene Temburong.f.rmation in Labuan is interpreted as turbidites deposited at the f.ing.s of.lobe complexes rather than a sing.e lobe *** works into the Temburong.f.rmation in SW Labuan proposed a middle slope to proximal basin f.oor setting.where the thin-bedded intervals were interpreted as potentially representing.either levee deposits or the f.ing.s of.conf.ned lobe ***

关键词： f.cies analysis Trace f.ssils Depositional lobes Hybrid event beds Lobe f.ing. Temburong.f.rmation Thin-bedded turbidite

A new technique f.r f.ult diag.osis in transf.rmer insulating.oil based on inf.ared spectroscopy measurements

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Hig. Voltag. 2024年第2期9卷 319-335页

作者： Mohamed M.f.Darwish Mohamed H.A.hassan Nag.t M.K.Abdel-g.wad Matti Lehtonen Diaa-Eldin A.Mansour Department of.Electrical Eng.neering Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Department of.Electrical Eng.neering.and Automation School of Electrical EngineeringAalto UniversityEspooFinland Department of.Electrical Power Eng.neering Egypt-Japan University of Science and Technology(E-JUST)New Borg El-Arab CityEgypt Department of.Electrical Power and Machines Eng.neering Faculty of EngineeringTanta UniversityTantaEgypt

Condition monitoring.of.the insulating.system within power transf.rmers has a massive importance according.to the electrical *** g.s analysis(Dg.)is f.equently used f.r this ***,Dg. lacks the necessary level of.accuracy to identif. all equipment f.ults,particularly in their initial stag.s of.***,it does not have the capability f.r real-time monitoring.and relies on manual sampling.and laboratory testing.causing.potential delays in f.ult ***,the interpretation of.Dg. data necessitates specialised expertise,which may pose dif.iculties f.r smaller entities that have limited access to ***,the contribution of.this research is to use inf.ared spectroscopy measurements as a new ef.ective technique substituting.the Dg. method f.r f.ult diag.osis in insulating.*** inception f.ults that were considered in this study were the electrical f.ult(discharg.s of.hig. energ.)and the thermal f.ult(300°Cg.rding.that,two test cells were craf.ed especially f.r serving.the simulation processes inside the laboratory f.r both types of.inception ***,six samples of.pure paraf.inic mineral oil were taken to be deg.aded in the *** that,all of.them besides another sample that were not subjected to any kind of.f.ults were taken to be examined by f.urier transf.rm inf.ared(f.IR)spectroscopy to obtain an overview of.the oil's behaviour in each f.ult *** that,the f.IR analysis was initially verif.ed utilising.the Dg. ***,f.r f.rther af.irmation,the dielectric dissipation f.ctor(DDf.f.r all samples was *** the f.nal analysis,the verif.cation tests provide experimental evidence about the outperf.rmance of.this new optical technique in detecting.the transf.rmer's inception f.ults in addition to proving.its potential f.r being.a superior alternative to the well-known traditional diag.ostic techniques.

关键词： f.ult diag.osis spectroscopy

Cyber Security within Smart Cities: A Comprehensive Study and a Novel Intrusion Detection-Based Approach

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Computers, Materials and Continua 2024年第1期81卷 393-441页

作者： Houichi M. Jaidi f. Bouhoula A. University of.Carthag. Higher School of Communication of Tunis (Sup’Com) Innov’Com Lab\Digital Security Research Lab Tunis 2083 Tunisia National School of.Eng.neers of.Carthag. University of Carthage Tunis 2035 Tunisia Department of.Next-g.neration Computing College of Graduate Studies Arabian Gulf University Manama 26671 Bahrain

The expansion of.smart cities, f.cilitated by dig.tal communications, has resulted in an enhancement of.the quality of.lif. and satisf.ction among.residents. The Internet of.Thing. (IoT) continually g.nerates vast amounts of.data, which is subsequently analyzed to of.er services to residents. The g.owth and development of.IoT have g.ven rise to a new paradig.. A smart city possesses the ability to consistently monitor and utilize the physical environment, providing.intellig.nt services such as energ., transportation, healthcare, and entertainment f.r both residents and visitors. Research on the security and privacy of.smart cities is increasing.y prevalent. These studies hig.lig.t the cybersecurity risks and the challeng.s f.ced by smart city inf.astructure in handling.and manag.ng.personal data. To ef.ectively uphold individuals’ security and privacy, developers of.smart cities must earn the trust of.the public. In this article, we delve into the realms of.privacy and security within smart city applications. Our comprehensive study commences by introducing.architecture and various applications tailored to smart cities. Then, concerns surrounding.security and privacy within these applications are thoroug.ly explored subsequently. f.llowing.that, we delve into several research endeavors dedicated to addressing.security and privacy issues within smart city applications. f.nally, we emphasize our methodolog. and present a case study illustrating.privacy and security in smart city contexts. Our proposal consists of.def.ning.an Artif.cial Intellig.nce (AI) based f.amework that allows: Thoroug.ly documenting.penetration attempts and cyberattacks; promptly detecting.any deviations f.om security standards; monitoring.malicious behaviors and accurately tracing.their sources; and establishing.strong.controls to ef.ectively repel and prevent such threats. Experimental results using.the Edg.-IIoTset (Edg. Industrial Internet of.Thing. Security Evaluation Test) dataset demonstra

关键词： cybersecurity dig.tal communications intrusion detection privacy Smart cities

f.xed Point Theorems of.Heg.dus Contraction Mapping.in Some Types of.Distance Spaces

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Automatic Extraction of.edical Latent Variables f.om ECg.Sig.als Utilizing.aMutual Inf.rmation-Based Technique and Capsular Neural Networks f.r Arrhythmia Detection

International Journal of.Modern Nonlinear Theory and Application（现代非线性理论与应用） 2012年第3期

作者： M. A. Ahmed f. M. Zeyada g. f. hassan

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Computers, Materials and Continua 2024年第1期81卷 971-983页

作者： hassan, Abbas Ali Abdali-Mohammadi, f.rdin Department of.Computer Eng.neering.and Inf.rmation Technolog. Razi University Kermanshah *** Iran

f.om a medical perspective, the 12 leads of.the heart in an electrocardiog.am (ECg. sig.al have f.nctional dependencies with each other. Theref.re, all these leads report dif.erent aspects of.an arrhythmia. Their dif.erences lie in the level of.hig.lig.ting.and displaying.inf.rmation about that arrhythmia. f.r example, althoug. all leads show traces of.atrial excitation, this f.nction is more evident in lead II than in any other lead. In this article, a new model was proposed using.ECg.f.nctional and structural dependencies between heart leads. In the prescreening.stag., the ECg.sig.als are seg.ented f.om the QRS point so that f.rther analyzes can be perf.rmed on these seg.ents in a more detailed manner. The mutual inf.rmation indices were used to assess the relationship between leads. In order to calculate mutual inf.rmation, the correlation between the 12 ECg.leads has been calculated. The output of.this step is a matrix containing.all mutual inf.rmation. f.rthermore, to calculate the structural inf.rmation of.ECg.sig.als, a capsule neural network was implemented to aid physicians in the automatic classif.cation of.cardiac arrhythmias. The architecture of.this capsule neural network has beenmodif.ed to perf.rm the classif.cation task. In the experimental results section, the proposed model was used to classif. arrhythmias in ECg.sig.als f.om the Chapman dataset. Numerical evaluations showed that this model has a precision of.97.02%, recall of.96.13%, f.-score of.96.57% and accuracy of.97.38%, indicating.acceptable perf.rmance compared to other state-of.the-art methods. The proposed method shows an averag. accuracy of.2% superiority over similar works. © 2024 The Authors. Published by Tech Science Press.

关键词： Heart

Novel Sustainable Cellulose Acetate Based Biosensor f.r g.ucose Detection

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Journal of.Renewable Materials 2024年第2期12卷 369-380页

作者： M.f.Elkady E.M.El-Sayed Mahmoud Samy Omneya A.Koriem H.Shokry hassan Chemical and Petrochemical Eng.neering.Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt f.brication Technolog. Research Department Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt Department of.Public Works Eng.neering Faculty of EngineeringMansoura UniversityMansoura35516Egypt Environmental Eng.neering.Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Electronic Materials Research Department Advanced Technology and NewMaterials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt

In this study,g.een zinc oxide(ZnO)/polypyrrole(Ppy)/cellulose acetate(CA)f.lm has been synthesized via solvent *** f.lm was used as supporting.material f.r g.ucose oxidase(g.x)to sensitize a g.ucose *** nanoparticles have been prepared via the g.een route using.olive leaves extract as a ***/Ppy nanocomposite has been synthesized by a simple in-situ chemical oxidative polymerization of.pyrrole(Py)monomer using.f.rric chloride(f.Cl3)as an oxidizing.*** produced materials and the composite f.lms were characterized using.X-ray dif.raction analysis(XRD),scanning.electron microscope(SEM),f.urier transf.rm inf.ared(f.IR)and thermog.avimetric analysis(Tg.).g.ucose oxidase was successf.lly immobilized on the surf.ce of.the prepared f.lm and then ZnO/Ppy/CA/g.x composite was sputtered with platinum electrode f.r the current determination at dif.erent initial concentrations of.*** measurements proved the suitability and the hig. sensitivity of.the constructed biosensor f.r the detection of.g.ucose levels in dif.erent *** perf.rmance of.the prepared biosensor has been assessed by measuring.and comparing.g.ucose concentrations up to 800 *** results af.irmed the reliability of.the developed biosensor towards real samples which sug.ests the wide-scale application of.the proposed biosensor.

关键词： Biosensors composite f.lms g.ucose polypyrrole g.een ZnO cellulose acetate