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Global Transmission Dynamics of a schistosomiasis Model and Its Optimal Control

Applied Mathematics 2019年第6期10卷 397-418页

作者： Mouhamadou Diaby Mariama sène abdou sène Laboratoire d’Analyse Numérique et d’Informatique (LANI) UFR SAT Université Gaston Berger de Saint-Louis Saint-Louis Sénégal UFR AGRO Université Gaston Berger de Saint-Louis Saint-Louis Sénégal LANI P&ocirc le sTN MAI (Mathématiques Appliquées et Informatique) Université Virtuelle du SENEGAL Dakar-Fann Sénégal

Drug treatment, snail control, cercariae control, improved sanitation and health education are the effective strategies which are used to control the schistosomiasis. In this paper, we consider a deterministic model for schistosomiasis transmission dynamics in order to explore the role of the several control strategies. The global stability of a schistosomiasis infection model that involves mating structure including male schistosomes, female schistosomes, paired schistosomes and snails is studied by constructing appropriate Lyapunov functions. We derive the basic reproduction number R0 for the deterministic model, and establish that the global dynamics are completely determined by the values of R0. We show that the disease can be eradicated when R0?≤1;otherwise, the system is persistent. In the case where ?R0?>1, we prove the existence, uniqueness and global asymptotic stability of an endemic steady state. sensitivity analysis and simulations are carried out in order to determine the relative importance of different control strategies for disease transmission and prevalence. next, optimal control theory is applied to investigate the control strategies for eliminating schistosomiasis using time dependent controls. The characterization of the optimal control is carried out via the Pontryagins Maximum Principle. The simulation results demonstrate that the insecticide is important in the control of schistosomiasis.

关键词： schistosomiasis Models Nonlinear Dynamical systems Global stability Reproduction Number Optimal Control sensitivity Analysis

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Abundant different types of exact soliton solution to the (4+1)-dimensional Fokas and (2+1)-dimensional breaking soliton equations

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Communications in Theoretical Physics 2021年第10期73卷 64-80页

作者： sachin Kumar Monika Niwas M s Osman M A abdou Department of Mathematics Faculty of Mathematical SciencesUniversity of DelhiDelhi-110007India Department of Mathematics Faculty of ScienceCairo UniversityGiza 12613Egypt Department of Mathematics Faculty of Applied ScienceUmm Alqura UniversityMakkah 21955Saudi Arabia Department of Physics College of SciencesUniversity of BishaP.O.Box 344Bisha 61922Saudi Arabia Department of Physics Faculty of ScienceMansoura University35516 MansouraEgypt

The prime objective of this paper is to explore the new exact soliton solutions to the higher-dimensional nonlinear Fokas equation and(2+1)-dimensional breaking soliton equations via a generalized exponential rational function(GERF) method. Many different kinds of exact soliton solution are obtained, all of which are completely novel and have never been reported in the literature before. The dynamical behaviors of some obtained exact soliton solutions are also demonstrated by a choice of appropriate values of the free constants that aid in understanding the nonlinear complex phenomena of such equations. These exact soliton solutions are observed in the shapes of different dynamical structures of localized solitary wave solutions, singular-form solitons, single solitons,double solitons, triple solitons, bell-shaped solitons, combo singular solitons, breather-type solitons,elastic interactions between triple solitons and kink waves, and elastic interactions between diverse solitons and kink waves. Because of the reduction in symbolic computation work and the additional constructed closed-form solutions, it is observed that the suggested technique is effective, robust, and straightforward. Moreover, several other types of higher-dimensional nonlinear evolution equation can be solved using the powerful GERF technique.

关键词： nonlinear evolution equations soliton solutions exact solutions generalized exponential rational function method solitary waves

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An analytical method for space-time fractional nonlinear differential equations arising in plasma physics

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Journal of Ocean Engineering and science 2017年第4期2卷 288-292页

作者： Mohamed Aly abdou Physics Department College of Science and Home DomesticsUniversity of BishaBishaSaudi Arabia

Here,a new fractional sub-equation method with a fractional complex transform is proposed for constructing exact solutions of fractional partial differential equations arising in plasma physics in the sense of modified Riemann-Liouville derivative,which is the fractional version of the known D_(ξ)^(α)G(ξ)/G(ξ)*** illustrate the validity of this method,we apply it to the space-time fractional KdV equation on the dust ion acoustic waves in dusty plasma and space-time Boussinesq fractional *** proposed approach is efficient and powerful for solving wide classes of nonlinear evolution fractional order *** solutions obtained here are new and have not been reported in former literature.

关键词： new frcational subequation method Fractional complex transformation Riemann-Liouville derivative Exact solutions

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new Optical soliton solutions of Nolinear Evolution Equation Describing Nonlinear Dispersion

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Communications in Theoretical Physics 2019年第9期71卷 1063-1068页

作者： saud Owyed M.A.abdou Abdel-Haleem Abdel-Aty s.saha Ray Department of Mathematics College of SciencesUniversity of BishaBisha61922P.O.Box344Saudi Arabia Department of Physics College of SciencesUniversity of BishaBisha61922P.O.Box344Saudi Arabia Physics Department Faculty of SciencesAl-Azhar University71524AssiutEgypt Department of Mathematics National Institute of TechnologyRourkela769008OdishaIndia

In this work, we examine two algorithm schemes, namely, Kudryashov expansion and Auxiliary equation method for obtaining new optical soliton solutions of the discrete electrical lattice models in nonlinear scheme(salerno equation). Our solutions obtained here are include the hyperbolic, rational, and trigonometric functions. Our two used methods are proved to be effective and powerful methods in obtaining the exact solutions of nonlinear evolution equations(NLEEs).

关键词： discrete electrical lattice generalized Kudryashov expansion method auxiliary equation method exact solutions

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specific wave profiles and closed-form soliton solutions for generalized nonlinear wave equation in(3+1)-dimensions with gas bubbles in hydrodynamics 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 Kumar Ihsanullah Hamid M.A.abdou Department of Mathematics Faculty of Mathematical SciencesUniversity of DelhiDelhi 110007India Department of Mathematics College of SciencesUniversity of BishaP.O.Box 344Bisha 61922Saudi Arabia Physics Department Faculty of ScienceMansoura UniversityMansoura 35516Egypt

Nonlinear evolution equations(NLEEs)are frequently employed to determine the fundamental principles of natural *** equations are studied extensively in nonlinear sciences,ocean physics,fluid dynamics,plasma physics,scientific applications,and marine *** generalized exponen-tial rational function(GERF)technique is used in this article to seek several closed-form wave solutions and the evolving dynamics of different wave profiles to the generalized nonlinear wave equation in(3+1)dimensions,which explains several more nonlinear phenomena in liquids,including gas bubbles.A large number of closed-form wave solutions are generated,including trigonometric function solutions,hyper-bolic trigonometric function solutions,and exponential rational functional *** the dynamics of distinct solitary waves,a variety of soliton solutions are obtained,including single soliton,multi-wave structure soliton,kink-type soliton,combo singular soliton,and singularity-form wave *** de-termined solutions have never previously been *** dynamical wave structures of some analyt-ical solutions are graphically demonstrated using three-dimensional 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 dynamics,and other fields of nonlinear sciences.

关键词： Closed-form solutions Dynamical wave patterns Analytic solutions Nonlinear wave equation GERF Method solitary waves solitons

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A MODEL OF A neAR-ZERO EneRGY HOME(NZEH)UsING PAssIVE DEsIGN sTRATEGIEs AND PV TECHNOLOGY IN HOT CLIMATEs

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Journal of Green Building 2016年第1期11卷 38-70页

作者： Ashraf T.syed Adel A.abdou Building Energy Assessor LEED^(■)Green AssociateM.Sc.Architectural Engineering DepartmentCollege of Environmental DesignKing Fahd University of Petroleum and Minerals(KFUPM)Dhahran 31261Saudi Arabia Associate Professor Architectural Engineering DepartmentKFUPM

INTRODUCTION Recent development has seen a drastic increase in energy use trends in saudi Arabian buildings leading to a demand for an effective course of action for energy conservation and production.A case study-based research initiative explor-ing near-zero energy potential in saudi Arabia was undertaken.A 4-bedroom detached single-family faculty residence at King Fahd University of Petroleum and Minerals(KFUPM)representing common regional housing design trends was utilized.A base case simulation model of the house was developed and val-idated using short-term and real-time energy consumption *** sets of strategies:passive design strategies,representative codes and standards,and renewable technology were employed in the new design of the *** strategies com-prised a green roof,a ventilated wall system,a sloped roof,and insulation for thermal *** alternatives helped reduce the annual energy consumption of the house by 17.2%.The most recent version of the International Energy Conserva-tion Code(IECC 2012)was also incorporated along with AsHRAE standard 62.2 for *** code and standard together reduced the annual energy consumption by 31.1%.solar PV was then utilized to reduce grid utilization for the remainder of the house energy *** strategy provided 24.7%of the total energy consumed annually.A combination of strategies showed a 70.7%energy consumption reduction,thereby decreasing the energy index of the house from 162.9 to 47.7 kWh/m^(2)/*** Zero Energy Building(ZEB)concepts and strategies utilized in this study demonstrate a socially responsible approach to achieving near-zero energy performance for an existing house.

关键词： solar energy near-Zero Energy Building(nZEB) near-Zero Energy Home(nZEH) passive strategies solar Photovoltaic(PV)

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Fractional diffusion-advection equation with resetting:An analytical approach

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Journal of Ocean Engineering and science 2024年第3期9卷 216-221页

作者： Ashraf M.Tawfik M.A.abdou Theoretical Physics Research Group Physics DepartmentFaculty of ScienceMansoura UniversityMansoura 35516Egypt Physics Department College of ScienceUniversity of BishaPO Box 344Bisha 61922Kingdom of Saudi Arabia

In this article,the fractional diffusion-advection equation with resetting is introduced to promote the theory of anomalous *** fractional equation describes a particle’s non-diffusive motion performing a random walk and is reset to its initial *** analytical method is proposed to obtain the solution of the fractional equation with resetting via Fourier and Laplace *** study the influence of the fractional-order and resetting rate on the probability distributions,and the mean square displacements are analyzed for different cases of anomalous regimes.

关键词： Fractional calculus Anomalous diffusion stochastic resetting

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significance of stromal-1 and stromal-2 signatures and biologic prognostic model in diffuse large B-cell lymphoma

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Cancer Biology & Medicine 2017年第2期14卷 151-161页

作者： Asmaa Gaber abdou Nancy Asaad Mona Kandil Mohammed shabaan Asmaa shams Pathology Department Faculty of MedicineMenoufia University

Objective:Diffuse Large B Cell Lymphoma(DLBCL)is a heterogeneous group of tumors with different biological and clinical characteristics that have diverse clinical outcomes and response to ***-1 signature of tumor microenvironment of DLBCL represents extracellular matrix deposition and histiocytic infiltrate,whereas stromal-2 represents angiogenesis that could affect tumor ***:The aim of the present study is to assess the significance of stromal-1 signature using sPARC-1 and stromal-2 signature using CD31 expression and then finally to construct biologic prognostic model(BPM)in 60 cases of DLBCL via ***:Microvessel density(PsPARC percentage of expression(Pses,compared with reactive follicular *** microvessel density was significantly associated with splenic involvement(P=0.008),high mitotic count(P=0.045),and presence of capsular invasion(P=0.035).Percentage of sPARC expression was significantly associated with splenic involvement(P=0.03).Constructing BPM showed that 42 cases(70%)were of low biologic score(0–1)and 18 cases(30%)were of high biologic score(2–3).Low BPM cases showed less probability for splenic involvement(P=0.04)and a higher rate of complete response to therapy compared with high score cases(P=0.08).Conclusions:The DLBCL microenvironment could modulate tumor progression behavior since angiogenesis and sPARC positive stromal cells promote dissemination by association with spleen involvement and capsular *** prognostic models,including modified BPM,which considered cell origin of DLBCL and stromal signature pathways,could determine DLBCL progression and response to therapy.

关键词： DLBCL stromal-1 stromal-2 sPARC angiogenesis BPM

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Morphology and Interface Engineered Mose2@Mos2 and Mos2@Mose2 Heterojunctions with Optimized Microwave Absorption Performances

Morphology and Interface Engineered MoSe2@MoS2 and MoS2@MoSe...

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作者： Darboe abdou Karim 贵州大学

学位级别：硕士

为了减轻电磁污染问题,人们对二维过渡金属二卤族化合物进行了深入的研究。由于其优异的物理和化学性质,可以成为生长材料的基体。可以构建和设计一种理想型的材料,作为有前景的微波吸收材料。由于界面极化和微观形貌对电磁波的衰减起... 详细信息

为了减轻电磁污染问题,人们对二维过渡金属二卤族化合物进行了深入的研究。由于其优异的物理和化学性质,可以成为生长材料的基体。可以构建和设计一种理想型的材料,作为有前景的微波吸收材料。由于界面极化和微观形貌对电磁波的衰减起着重要的作用,本文提出并生成了具有花状形貌的二维(2D)/二维异质结。该异质结可以为实现强界面极化提供较大的接触面积,并产生更多次的电磁波反射和散射。采用简单的两步水热法,成功合成了Mo se@Mo s和Mo s@Mo se内外互换异质结,该异质结由二维Mo se和Mo s纳米片组成,具有花状形貌。结果表明,水热温度对其花状形貌和Mo s含量有显著影响。通过优化微结构,设计Mo se@Mo s和Mo s@Mo se异质结具有较强的吸收能力、较宽的吸收带宽和较薄的匹配厚度,综合吸收电磁波的性能得到了提高。总的来说,这一工作表明设计的异质结的优化电磁波吸收特性主要来源于特殊的界面和形态结构,这也为过渡金属二卤族异质结的设计和合成提供了新的途径,使其成为一种新理想型的高性能微波吸收材料。

关键词： Mose2@Mos2 Mos2@Mose2正反异质结界面极化结构工程微波吸收

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speak-Correct: A Computerized Interface for the Analysis of Mispronounced Errors

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Computer systems science & Engineering 2022年第12期43卷 1155-1173页

作者： Kamal Jambi Hassanin Al-Barhamtoshy Wajdi Al-Jedaibi Mohsen Rashwan sherif abdou Faculty of Computing&Information Technology King Abdulaziz UniversitySaudi Arabia Faculty of Engineering Cairo UniversityEgypt Faculty of Computers Cairo UniversityEgypt

Any natural language may have dozens of *** though the equivalent phonemic formation of the word,if it is properly called in different accents,humans do have audio signals that are distinct from one *** the most common issues with speech,the processing is discrepancies in pronunciation,accent,and *** research study examines the issues of detecting,fixing,and summarising accent defects of average Arabic individuals in English-speaking *** article then discusses the key approaches and structure that will be utilized to address both accent flaws and pronunciation *** proposed speakCorrect computerized interface employs a cuttingedge speech recognition system and analyses pronunciation errors with a speech *** a result,some of the most essential types of changes in pronunciation that are significant for speech recognition are performed,and accent defects defining such differences are ***,the suggested technique increases the speaker’s *** uses 100 h of phonetically prepared individuals to construct a pronunciation instruction *** prerecorded sets are used to train Hidden Markov Models(HMM)as well as weighted graph *** speeches are quite clear and might be considered *** proposed interface is optimized for use with an integrated phonetic pronounced dataset,as well as for analyzing and identifying speech faults in saudi and Egyptian *** proposed interface detects,analyses,and assists English learners in correcting utterance faults,overcoming problems,and improving their pronunciations.

关键词： speech recognition computerized interface arabic dialects accent defects acoustic error

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