Now showing items 345-364 of 666

    • K-shell photoionization of O+ and O2+ ions: Experiment and theory 

      Bizau, J.M.; Cubaynes, D.; Guilbaud, S.; Al-Shorman, M. M.; Gharaibeh, M. F.; ... more authors ( American Physical Society , 2015 , Article)
      Absolute cross sections for the single and double K-shell photoionization of carbon like O2+ and nitrogen like O+ ions were measured in the 526–620-eV photon energy range by employing the ion-photon merged-beam technique ...
    • Koopman Operator Approximation Under Negative Imaginary Constraints 

      Mabrok, Mohamed A.; Aksikas, Ilyasse; Meskin, Nader ( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)
      Nonlinear Negative Imaginary (NI) systems arise in various engineering applications, such as controlling flexible structures and air vehicles. However, unlike linear NI systems, their theory is not well-developed. In this ...
    • Large sample and bootstrap intervals for the gamma scale parameter based on grouped data 

      Baklizi, Ayman; Al-Nasser, Amjad ( Wayne State University , 2006 , Article)
      Interval estimation of the scale parameter of the gamma distribution using grouped data is considered in this article. Exact intervals do not exist and approximate intervals are needed Recently, Chen and Mi (2001) proposed ...
    • Large-scale global optimization based on hybrid swarm intelligence algorithm 

      Mashwani, W.K.; Hamdi, A.; Asif Jan, M.; Goktas, A.; Khan, F. ( IOS Press , 2020 , Article)
      There are numerous large-scale global optimization problems encountered in real-world applications including engineering, manufacturing, economics, networking fields. Over the last two decades different varieties of swarm ...
    • Large-Scale Swarm Control in Cluttered Environments 

      Elsayed, Saber; Mabrok, Mohamed ( Springer Science and Business Media Deutschland GmbH‏ , 2024 , Conference Paper)
      In the evolving era of social robots, managing a swarm of autonomous agents to perform particular tasks has become essential for numerous industries. The task becomes more challenging for large-scale swarms and complex ...
    • Least-squares spectral methods for ODE eigenvalue problems 

      Hashemi, Behnam; Nakatsukasa, Yuji ( Society for Industrial and Applied Mathematics , 2022 , Article)
      We develop spectral methods for ODEs and operator eigenvalue problems that are based on a least-squares formulation of the problem. The key tool is a method for rectangular generalized eigenvalue problems, which we extend ...
    • Level sets of potential functions bisecting unbounded quadrilaterals 

      Nasser, Mohamed M.S.; Nasyrov, Semen; Vuorinen, Matti ( Springer Nature , 2022 , Article)
      We study the mixed Dirichlet–Neumann problem for the Laplace equation in the complement of a bounded convex polygonal quadrilateral in the extended complex plane. The Dirichlet / Neumann conditions at opposite pairs of ...
    • Likelihood and Bayesian estimation of using lower record values from the generalized exponential distribution 

      Baklizi, Ayman ( Elsevier Ltd , 2007 , Article)
      We consider the likelihood and Bayesian estimation of the stress-strength reliability based on lower record values from the generalized exponential distribution. The estimators are derived and their properties are studied. ...
    • Likelihood and Bayesian Inference in the Lomax Distribution under Progressive Censoring 

      Baklizi, A.; Saadati Nik, A.; Asgharzadeh, A. ( Horizon Research Publishing(HRPUB) , 2022 , Article)
      The Lomax distribution has been used as a statistical model in several fields, especially for business failure data and reliability engineering. Accurate parameter estimation is very important because it is the base for ...
    • Linear hydrogen gas sensors based on bimetallic nanoclusters 

      Ayesh, Ahmad I. ( Elsevier Ltd , 2016 , Article)
      This work reports on the fabrication of hydrogen gas sensors based on bimetallic palladium-copper nanoclusters. The nanoclusters were generated by sputtering and inert-gas condensation inside an ultra-high vacuum (UHV) ...
    • Linear profile monitoring using EWMA structure under ranked set schemes 

      Riaz, Muhammad; Mahmood, Tahir; Abbasi, Saddam Akber; Abbas, Nasir; Ahmad, Shabbir ( Springer London , 2017 , Article)
      In many manufacturing processes, study variable is not the only quality characteristic, but there may exist some explanatory variable(s) that are associated with the study variable. This association may be linear or nonlinear ...
    • Linearization of third-order ordinary differential equations u'''=f(x,u,u',u') via point transformations 

      Al-Dweik A.Y.; Mustafa M.T.; Mahomed F.M.; Alassar R.S. ( John Wiley and Sons Ltd , 2018 , Article)
      The linearization problem for scalar third-order ordinary differential equations via point transformations was solved partially in the works of Al-Dweik et al by the use of the Cartan equivalence method. In order to solve ...
    • Loading Rates of Dust and Metals in Residential Houses of Arid and Dry Climatic Regions 

      Shraim, Amjad M.; Alenazi, Duna A.; Abdel-Salam, Abdel-Salam G.; Kumar, Prashant ( Taiwan Association for Aerosol Research , 2016 , Article)
      Dust samples were collected from 38 naturally ventilated houses for 12 weeks. Effects of three variables in two groups each were evaluated: proximity to traffic density (main- and side-roads), cigarettes smoking (smoking ...
    • Location charts based on ranked set sampling for normal and non-normal processes 

      Abbasi S.A. ( John Wiley and Sons Ltd , 2019 , Article)
      Control charts, based on ranked set sampling schemes, had been proposed recently for efficient monitoring of process location. All the proposals in the literature are based on the ideal assumption of normally distributed ...
    • Logarithmic Bounds for Oscillatory Singular Integrals on Hardy Spaces 

      Al-Qassem, Hussain; Cheng, Leslie; Pan, Yibiao ( Hindawi Publishing Corporation , 2016 , Article)
      We establish a logarithmic bound for oscillatory singular integrals with quadratic phases on the Hardy space H 1 (R n). The logarithmic rate of growth is the best possible. 2016 Hussain Al-Qassem et al.
    • Long-term COVID-19 booster effectiveness by infection history and clinical vulnerability and immune imprinting: a retrospective population-based cohort study 

      Hiam, Chemaitelly; Ayoub, Houssein H; Tang, Patrick; Coyle, Peter; Yassine, Hadi M; ... more authors ( Elsevier , 2023 , Article)
      BackgroundLong-term effectiveness of COVID-19 mRNA boosters in populations with different previous infection histories and clinical vulnerability profiles is inadequately understood. We aimed to investigate the effectiveness ...
    • LQ (optimal) control of hyperbolic PDAEs 

      Moghadam, A.A.; Aksikas, I.; Dubljevic, S.; Forbes, J.F. ( Taylor and Francis Ltd. , 2014 , Article)
      The linear quadratic control synthesis for a set of coupled first-order hyperbolic partial differential and algebraic equations is presented by using the infinite-dimensional Hilbert state-space representation of the system ...
    • A Magnetic Transport Middle Eastern Positron Beam 

      Al-Qaradawi, I.Y.; Britton, D.T.; Rajaraman, R.; Abdulmalik, D. ( Elsevier , 2008 , Article)
      A magnetically guided slow positron beam is being constructed at Qatar University and is currently being optimised for regular operation. This is the first positron beam in the Middle East, as well as being the first Arabic ...
    • Majorana fermions in a box 

      Al-Hashimi, M.?H.; Shalaby, A.?M.; Wiese, U.-J. ( American Physical Society , 2017 , Article)
      Motivated by potential applications to ultracold matter, we perform a theoretical study of Majorana fermions confined to a finite volume, whose boundary conditions are characterized by self-adjoint extension parameters. ...
    • Mass problems and density 

      Binns, Stephen; Shore, Richard A.; Simpson, Stephen G. ( World Scientific Publishing Co. Pte Ltd , 2016 , Article)
      Recall that Ew is the lattice of Muchnik degrees of nonempty effectively compact sets in Euclidean space. We solve a long-standing open problem by proving that Ew is dense, i.e. satisfies {equation presented}. Our proof ...