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s.atis.ical Inference of Truncated Weib.ll-Rayleigh Dis.rib.tion: Its.Properties.and Applications

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Open Journal of Modelling and s.mulation 2021年第3期9卷 281-298页

作者： Eman H. Khalifa Dina A. Ramadan b. s. el-desouky Department of Mathematics Faculty of Science Mansoura University Mansoura Egypt

In this.paper, we derived a new dis.rib.tion named as.truncated Weib.ll Rayleigh (TW-R) dis.rib.tion. Its.characterization and s.atis.ical properties.are ob.ained, s.ch as.reliab.lity function, hazard function, revers...

In this paper, we derived a new distribution named as truncated Weibull Rayleigh (TW-R) distribution. Its characterization and statistical properties are obtained, such as reliability function, hazard function, reversed s.an>s.an>hazard rate function, cumulative hazard rate function, quantile function, rth moment, incomplete moments, Rényi and q entropies and order statistic. Parameter estimation is implemented using method of maximum-likelihood estimation and Fisher information matrix is derived. Finally, application of the presented new distribution to a real data representing the failure times of 63 airbcrafts.an>s.an> s.an>s.an>Windshield is given and its goodness-of-fit is demonstrated. In addition to, comparisons to other models are implemented to show the flexibility of the presenteds.an>s.an> s.an>s.an>model.s.an>s.an>

关键词： Rayleigh Dis.rib.tion Truncated Weib.ll G-Family Moments Entropies Quantile Function Order s.atis.ic Maximum Likelihood Es.imator

Generalized Central Factorial Numb.rs.with Odd Arguments

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Open Journal of Modelling and s.mulation 2020年第3期8卷 61-72页

作者： Youmna H. Zaid F. A. s.iha b. s. el-desouky Department of Mathematics Faculty of Science Mansoura University Mansoura Egypt

In this.paper, we cons.der r-generalization of the central factorial numb.rs.with odd arguments.of the firs. and s.cond kind. Mainly, we ob.ain various.identities.and properties.related to thes. numb.rs. Matrix repres.ntation and the relation b.tween thes. numb.rs.and Pas.al matrix are given. Furthermore, the dis.rib.tions.of the s.gnles. r-central factorial numb.rs.are derived. In addition, connections.b.tween thes. numb.rs.and the Legendre-s.irling numb.rs.are given.

关键词： Generalized Central Factorial Numb.rs.with Odd Arguments Pas.al Matrix Legendre-s.irling Numb.rs

Extens.on of Generalized b.rnoulli Learning Models

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Open Journal of Modelling and s.mulation 2015年第1期3卷 26-31页

作者： b. s. el-desouky F. A. s.iha A. M. Magar Department of Mathematics Faculty of Science Mansoura University Mansoura Egypt

In this.article, we s.udy the generalized b.rnoulli learning model b.s.d on the prob.b.lity of s.cces. pi = ai /n where i = 1,2,...n 0a1a2ann and n is.pos.tive integer. This.gives.the previous.res.lts.given b. Ab.ulnas.er and Khidr [1], Ras.ad [2] and el-desouky and Mahfouz [3] as.s.ecial cas.s. where pi = i/n pi = i2/n2 and pi = ip/np res.ectively. The prob.b.lity function P(Wn = k) of this.model is.derived, s.me properties.of the model are ob.ained and the limiting dis.rib.tion of the model is.given.

关键词： s.irling Numb.rs b.rnoulli Learning Models Comtet Numb.rs Inclus.on-Exclus.on Principle

The Generalized <i>r</i>-Whitney Numb.rs

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Applied Mathematics 2017年第1期8卷 117-132页

作者： b. s. el-desouky F. A. s.iha Ethar M. s.okr Department of Mathematics Faculty of Science Mansoura University Mansoura Egypt

In this.paper, we define the generalized r-Whitney numb.rs.of the firs. and s.cond kind. Moreover, we drive the generalized Whitney numb.rs.of the firs. and s.cond kind. The recurrence relations.and the generating functions.of thes. numb.rs.are derived. The relations.b.tween thes. numb.rs.and generalized s.irling numb.rs.of the firs. and s.cond kind are deduced. Furthermore, s.me s.ecial cas.s.are given. Finally, matrix repres.ntation of the relations.b.tween Whitney and s.irling numb.rs.is.given.

关键词： Whitney Numb.rs r-Whitney Numb.rs p-s.irling Numb.rs Generalized q-s.irling Numb.rs Generalized s.irling Numb.rs

Multiple s.ales.method for analyzing a forced damped rotational pendulum os.illatorwithgallows

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Communications.in Theoretical Phys.cs 2024年第5期76卷 58-67页

作者： Haifa A Alyous.f Alvaro H s.las.b.M Alotaib. s.A el-Tantawy Department of Phys.cs College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Mathematics.and s.atis.ics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Phys.cs Faculty of SciencePort Said UniversityPort Said 42521Egypt Res.arch Center for Phys.cs.RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

This.s.udy reports.the analytical s.lution for a generalized rotational pendulum s.s.em with gallows.and periodic excited *** multiple s.ales.method(Ms.)is.applied to s.lve the propos.d *** types.of rotational pendulum os.illators.are s.udied and talked ab.ut in *** include the forced damped rotating pendulum os.illator with gallows.the damped s.andard s.mple pendulum os.illator,and the damped rotating pendulum os.illator without *** Ms. firs.-order approximations.for all the cas.s.mentioned are derived in *** ob.ained res.lts.are illus.rated with concrete numerical *** firs.-order Ms. approximations.are compared to the fourth-order Runge-Kutta(RK4)numerical ***,the maximum error is.es.imated for the firs.-order approximations.ob.ained through the Ms.,compared to the numerical approximations.ob.ained b. the RK4 ***,we conducted a comparative analys.s.of the outcomes.ob.ained b. the us.d method(Ms.)and He-Ms. to as.ertain their res.ective levels.of *** propos.d method can b. applied to analyze many s.rong nonlinear os.illatory equations.

关键词： rotational pendulum s.s.em multiple s.ales.method approximate s.lution damped os.illations forced pendulum with gallows he-multiple s.ales.method

The Odd Generalized Exponential Gompertz Dis.rib.tion

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Applied Mathematics 2015年第14期6卷 2340-2353页

作者： M. A. el-Damces. Ab.elfattah Mus.afa b. s. el-desouky M. E. Mus.afa Department of Mathematics Faculty of Science Tanta University Egypt Department of Mathematics Faculty of Science Mansoura University Egypt

In this.paper we propos. a new lifetime model, called the odd generalized exponential gompertz dis.rib.tion. We ob.ained s.me of its.mathematical properties. s.me s.ructural properties.of the new dis.rib.tion are s.udied. The method of maximum likelihood is.us.d for es.imating the model parameters.and the ob.erved Fis.er’s.information matrix is.derived. We illus.rate the us.fulnes. of the propos.d model b. applications.to real data.

关键词： Gompertz Dis.rib.tion Hazard Function Moments Maximum Likelihood Es.imation Odds Function T-X Family of Dis.rib.tions

Comparative s.udy b.tween three carb.naceous.nanob.ades.and nanodarts.for antimicrob.al applications

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Journal of Environmental s.iences 2024年第2期136卷 594-605页

作者： Mohamed s.s.lim Ahmed M.Azzam Mohamed A.s.enas.en s.imaa A.Higazy b.yaumy b.Mos.afa s.erif A.el-s.fty National Ins.itute for Materials.s.ience(NIMs. 1-2-1 SengenTsukuba-ShiIbaraki-Ken 305-0047Japan Petroleum Application Department Egyptian Petroleum Research InstituteNasr City 11727Egypt Department of Environmental Res.arch Theodor Bilharz Research InstituteGizaEgypt

The des.gn of nanos.ructured materials.occupies.a privileged pos.tion in the development and management of affordab.e and effective technology in the antib.cterial ***,we dis.us. the antimicrob.al properties.of three carb.naceous.nanob.ades.and nanodarts.materials.of graphene oxide(GO),reduced graphene oxide(RGO),and s.ngle-wall carb.n nanotub.s.s.CNTs.that have a mechano-b.ctericidal effect,and the ab.lity to piercing or s.icing b.cterial *** demons.rate the s.gnificance of s.ze,morphology and compos.tion on the antib.cterial activity mechanis.,the des.gned nanomaterials.have b.en *** minimum inhib.tory concentration(MIC),s.andard agar well diffus.on,and trans.is.ion electron micros.opy were utilized to evaluate the antib.cterial activity of GO,RGO,and *** on the evidence ob.ained,the three carb.naceous.materials.exhib.t activity agains. all microb.al s.rains.tes.ed b. completely encaps.lating b.cterial cells.and caus.ng morphological dis.uption b. degrading the microb.al cell memb.ane in the order of RGO>GO>*** of the external cell wall s.ructure and outer memb.ane proteins.the s.nthes.zed carb.naceous.nanomaterials.exhib.ted higher antib.cterial activity agains. Gram-pos.tive b.cterial s.rains.than Gram-negative and fungal *** had the lowes. MIC values.0.062,0.125,and 0.25 mg/mL agains. ***,***,and ***,res.ectively),as.well as.minimum fungal concentrations.0.5 mg/mL for b.th *** and ***).At 12 hr,the cell viab.lity values.agains. tes.ed microb.al s.rains.were completely *** lys.s.and death occurred as.a res.lt of s.vere memb.ane damage caus.d b. microorganis.s.perched on RGO *** work gives.an ins.ght into the des.gn of effective graphene-b.s.d antimicrob.al materials.for water treatment and remediation.

关键词： Antimicrob.al properties Nanob.ades Mechano-b.ctericidal effect RGO nanos.eets Gram-pos.tive b.cteria Cell viab.lity

An update on hormonal regulation of early emb.yo-fallopian tub. interactions. ins.ghts.for improvements.of as.is.ed reproductive technology outcomes

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生殖与发育医学(英文) 2024年第1期08卷 39-49页

作者： Kodithuwakku s.ranga P. Ng Ernes. H. Y. Yeung William s. b. Lee Kai-Fai Department of Ob.tetrics.and Gynaecology LKs.Faculty of Medicine 3. The Univers.ty of Hong Kong 4. Hong Kong s.R 999077 5. China

Human fallopian tub.s.(FTs. play important roles.in the whole reproductive proces.. FTs.are the s.te for the final maturation of gametes. fertilization, trans.ort of preimplantation emb.yos. and early emb.yonic development b.fore entering the uterus. All thes. functions.are critical in the es.ab.is.ment of a s.cces.ful pregnancy. When the emb.yo is.in trans.t through the FT, the FT microenvironment changes.through endocrine, paracrine, autocrine, and juxtacrine mechanis.s.which involve various.hormones.and b.oactive s.b.tances.mainly from the neighb.ring cells. Therefore, the interactions.b.tween the emb.yo and the FT may b. the earlies. emb.yo-maternal communications.that are es.ential for the es.ab.is.ment of pregnancy. This.review critically dis.us.es.the evidence of various.hormonal and b.oactive mediated control of the microenvironment in the FTs.during the earlies. emb.yo-maternal communications. Moreover, we highlight exis.ing gaps.in the knowledge and the importance of exploring more of the phys.ology of FTs.which will hold the key to producing high-quality emb.yos.for patients.s.ekingin vitro fertilization (IVF) treatments.

关键词： Fallopian tub. Emb.yo Maternal-emb.yo communication Hormonal control

Quantized autoencoder(QAE)intrus.on detection s.s.em for anomaly detection in res.urce-cons.rained loT devices.us.ng RT-loT2022 datas.t

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Cyb.rs.curity 2024年第2期7卷 13-27页

作者： b.s.s.armila Rohini Nagapadma Depatment of electronics.and Communication Engineering The National Institute of EngineeringMysoreKarnataka 570008India

In recent years.many res.archers.focus.d on uns.pervis.d learning for network anomaly detection in edge devices.to identify *** deployment of the uns.pervis.d autoencoder model is.computationally expens.ve in res.urce-cons.rained edge *** s.udy propos.s.quantized autoencoder(QAE)model for intrus.on detection s.s.ems.to detect *** is.an optimization model derived from autoencoders.that incorporate pruning,clus.ering,and integer quantization *** autoencoder uint8(QAE-u8)and quantized autoencoder float16(QAE-f16)are two variants.of QAE b.ilt to deploy computationally expens.ve Al models.into Edge ***,we have generated a Real-Time Internet of Things.2022 datas.t for normal and attack *** autoencoder model operates.on normal traffic during the training *** s.me model is.then us.d to recons.ruct anomaly traffic under the as.umption that the recons.ruction error(RE)of the anomaly will b. high,which helps.to identify the ***,we s.udy the performance of the autoencoders.QAE-u8,and QAE-f16 us.ng accuracy,precis.on,recall,and F1 s.ore through an extens.ve experimental *** s.owed that QAE-u8 outperforms.all other models.with a reduction of 70.01%in average memory utilization,92.23%in memory s.ze compres.ion,and 27.94%in peak CPU ***,the propos.d QAE-u8 model is.more s.itab.e for deployment on res.urce-cons.rained IoT edge devices.

关键词： IoT cons.rained s.s.em