Browsing Mathematics, Statistics & Physics by Title

Now showing items 92-111 of 666

    • Asymptotic stability of time-varying distributed parameter semi-linear systems 

      Aksikas, Ilyasse ( IFAC , 2014 , Conference Paper)
      The asymptotic behaviour is studied for a class of non-linear distributed parameter time-varying dissipative systems. This is achieved by using time-varying infinite-dimensional Banach state space description. Stability ...

    • Atomic-scale and optical investigation of nanostructured Er disilicates in silica 

      S., Guehairia; Demoulin, R.; Merabet, H.; Pareige, P.; Cardin, J.; ... more authors ( Elsevier , 2022 , Article)
      The optical and structural properties of Er-doped Silicon oxide based thin films elaborated by RF magnetron sputtering were investigated as a function of annealing treatment. Atom Probe Tomography and Transmission electron ...

    • An attribute control chart for the inverse Weibull distribution under truncated life tests 

      Baklizi, Ayman; Ghannam, Sawsan Abu ( Elsevier Ltd , 2022 , Article)
      Statistical Process Control (SPC) is applied to monitor production processes in order to discover any problems or issues that may arise during the production process and to help in finding solutions for these issues. In ...

    • Auxiliary-information-based efficient variability control charts for Phase I of SPC 

      Abbasi, Saddam Akber; Adegoke, Nurudeen A. ( John Wiley and Sons Ltd , 2020 , Article)
      The inclusion of correlated auxiliary variables into the monitoring scheme of quality characteristic of interest has gained notable attention in recent statistical process control (SPC) literature. Several authors have ...

    • Axisymmetric Powell-Eyring fluid flow with convective boundary condition: optimal analysis 

      Hayat, T.; Makhdoom, S.; Awais, M.; Saleem, S.; Rashidi, M. M. ( Springer Netherlands , 2016 , Article)
      The effects of axisymmetric flow of a Powell-Eyring fluid over an impermeable radially stretching surface are presented. Characteristics of the heat transfer process are analyzed with a more realistic condition named the ...

    • b2 -Metric spaces and some fixed point theorems 

      Mustafa, Zead; Parvaneh, Vahid; Roshan, Jamal Rezaei; Kadelburg, Zoran ( Springer International Publishing , 2014 , Article)
      The aim of this paper is to establish the structure of [InlineEquation not available: see fulltext.]-metric spaces, as a generalization of 2-metric spaces. Some fixed point results for various contractive-type mappings in ...

    • Bayesian EWMA control charts based on Exponential and transformed Exponential distributions 

      Noor, Surria; Noor-ul-Amin, Muhammad; Abbasi, Saddam Akber ( John Wiley and Sons Ltd , 2021 , Article)
      In this paper, we proposed the Bayesian exponentially weighted moving average (EWMA) control charts for mean under the nonnormal life time distributions. We used the time between events data which follow the Exponential ...

    • Bayesian inference for linear regression under alpha-skew-normal prior [Pentaabiran Bayesian untuk Model Regresi Linear Prior Normal-Pencong-Alfa] 

      Alhamide, A.A.; KAMARULZAMAN, Ibrahim; Alodat, M.T.; Zin, WAN ZAWIAH WAN ( Penerbit Universiti Kebangsaan Malaysia , 2019 , Article)
      A study on Bayesian inference for the linear regression model is carried out in the case when the prior distribution for the regression parameters is assumed to follow the alpha-skew-normal distribution. The posterior ...

    • Bayesian inference for Pr ( Y<X ) in the exponential distribution based on records 

      Baklizi, Ayman ( Elsevier , 2014 , Article)
      We consider Bayesian estimation of the stress–strength reliability based on record values. The estimators are derived under the squared error loss function in the one parameter as well as two-parameter exponential ...

    • Bayesian Monitoring of Linear Profiles Using DEWMA Control Structures with Random X 

      Abbasi, Saddam Akber; Abbas, Tahir; Riaz, Muhammad; Gomaa, Abdel Salam ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)
      The process structures of manufacturing industry are efficiently modeled using linear profiles. Classical and Bayesian set-ups are two well-appreciated schemes for designing control charts for the monitoring of process ...

    • Bioinformatic analysis of human opn3 alternative promoters associated with cancer 

      Ibrahim Al-Obaide, Mohammed A.; Abdel-Salam, Abdel Salam G.; Alobydi, Hytham; Srivenugopal, Kalkunte S. ( Natural Sciences Publishing Co. , 2016 , Article)
      In this bioinformatics study we analyzed the functional motifs and structural features of regulatory regions of OPN3, a member of the guanine nucleotide-binding protein (G protein)-coupled receptor super-family, which is ...

    • Birth and death of spiral waves in a network of Hindmarsh–Rose neurons with exponential magnetic flux and excitable media 

      Parastesh F.; Rajagopal K.; Alsaadi F.E.; Hayat T.; Pham V.-T.; ... more authors ( Elsevier Inc. , 2019 , Article)
      Spiral waves are spatiotemporal patterns, observed in complex networks of biological oscillators such as heart and brain. In this paper, at first a modified Hindmarsh–Rose model with external electromagnetic radiation and ...

    • BNT162b2 and mRNA-1273 COVID-19 vaccine effectiveness against the SARS-CoV-2 Delta variant in Qatar. 

      Tang, Patrick; Hasan, Mohammad R; Chemaitelly, Hiam; Yassine, Hadi M; Benslimane, Fatiha M; ... more authors ( Nature Researc , 2021 , Article)
      With the global expansion of the highly transmissible SARS-CoV-2 Delta (B.1.617.2) variant, we conducted a matched test-negative case-control study to assess the real-world effectiveness of COVID-19 messenger RNA vaccines ...

    • BNT162b2 antigen dose and SARS-CoV-2 omicron infection in adolescents 

      Chemaitelly, Hiam; Ayoub, Houssein H.; Coyle, Peter; Tang, Patrick; Yassine, Hadi M.; ... more authors ( Elsevier , 2023 , Other)
      COVID-19 vaccine antigen dose might affect protection against SARS-CoV-2 infection,1, 2 but direct evidence to quantify this effect is absent. We conducted a matched, retrospective, cohort study using a regression ...

    • Bootstrap confidence intervals for adaptive cluster sampling design based on Horvitz-Thompson type estimators 

      Mohammadi, Mohammad; Salehi, Mohammad; Rao, J. N.K. ( Kluwer Academic Publishers , 2014 , Article)
      Perez and Pontius (J Stat Comput Simul 76:755-764, 2006) introduced several bootstrap methods under adaptive cluster sampling using a Horvitz-Thompson type estimator. Using a simulation study, they showed that their proposed ...

    • Boundary linear-quadratic control for a system of coupled parabolic-hyperbolic PDEs and ODE 

      Aksikas A.; Aksikas I.; Hayes R.E.; Forbes F. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)
      The paper deals with the design of a boundary optimal controller for a general model of parabolic-hyperbolic PDEs coupled with an ODE. The augmented infinite-dimensional state space representation has been used in order ...

    • Boundary optimal (LQ) control of coupled hyperbolic PDEs and ODEs 

      Alizadeh Moghadam, Amir; Aksikas, Ilyasse; Dubljevic, Stevan; Forbes, J. Fraser ( Elsevier , 2013 , Article)
      This contribution addresses the development of a linear quadratic (LQ) regulator for a set of hyperbolic PDEs coupled with a set of ODEs through the boundary. The approach is based on an infinite-dimensional Hilbert ...

    • Boundary optimal control design for a system of parabolic-hyperbolic PDEs coupled with an ODE 

      Aksikas, Ahmed; Aksikas, Ilyasse; Hayes, Robert E.; Fraser Forbes, J. ( Taylor and Francis Ltd. , 2020 , Article)
      This paper deals with the design of a boundary optimal controller for a general model of parabolic-hyperbolic PDEs coupled with an ODE. The augmented infinite-dimensional state-space representation has been used in order ...

    • Boundary optimal control of coupled parabolic PDE-ODE systems 

      Mohammadi, L.; Aksikas, I.; Dubljevic, S.; Forbes, J. F. ( IFAC Secretariat , 2014 , Conference Paper)
      This paper deals with boundary optimal control problem for coupled parabolic PDEODE systems. The problem is studied using infinite-dimensional state space representation of the coupled PDE-ODE system. Linearization of the ...

    • Boundary Output-Feedback Regulation of a Catalytic Cracking Reactor 

      Aksikas, Ilyasse ( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference Paper)
      This work focuses on the design of a boundary output feedback regulator for a catalytic cracking reactor model which can be represented by a set of partial differential equations (PDEs). Based on the linear abstract ...