Now showing items 1-11 of 11

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      Comparison Of Ising Magnet On Directed Versus Undirected Erdös–Rényi And Scale-Free Networks

      Sumour, Muneer A.; El-Astal, Ali H.; Lima, Fws; Shabat, Mohammed M.; Khalil, HM; Khalil, Hala M (World Scientific Publishing Company, 2007)
      Scale-free networks are a recently developed approach to model the interactions found in complex natural and man-made systems. Such networks exhibit a power-law distribution of node link (degree) frequencies n(k) in which ...
    • Comparison of nonlinear with linear Barabási–Albert networks

      Sumour, Muneer A.; Lima, Fws; Shabat, Mohammed M.; Stauffer, D. (North-Holland, 2018)
      The nonlinear Barabási–Albert network (NLBA) of Krapivsky, Redner and Leyvraz (2000) is reinvestigated and modified here. We check the distribution of k (i) versus i for strong peaks and sharp gaps, where node number i has ...
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      Distribution of number of neighbors on semi-directed Barab'asi-Albert networks with many initial neighbors

      Sumour, Muneer A.; Lima, Fws; Radwan, M. A.; Shabat, Mohammed M. (2015)
      The Barba'asi-Albert network [1, 2] is growing such that the probability of a new site to be connected to one of the already existing sites, is proportional to the number of previous connections to this already existing ...
    • Finite-size effects on semi-directed Barabási–Albert networks

      Radwan, M. A.; Sumour, Muneer A.; Elbitar, AM; Shabat, Mohammed M.; Lima, Fws (World Scientific Publishing Company, 2016)
      In scale-free Barabási–Albert (BA) networks, we study the finite-size effect at different number m of neighbors. So, we investigate the effects of finite network size N for the recently developed semi-directed BA networks ...
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      Monte Carlo simulation of Ising model on directed Barabasi–Albert Network

      Sumour, Muneer A.; Shabat, Mohammed M. (World Scientific Publishing Company, 2005)
      The existence of spontaneous magnetization of Ising spins on directed Barabasi–Albert networks is investigated with seven neighbors, by using Monte Carlo simulations. In large systems, we see the magnetization for different ...
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      Reexamination of Scaling in the Five-dimensional Ising model

      Sumour, Muneer A.; Stauffer, Dietrich; Shabat, Mohammed M.; El-Astal, Ali H. (2006)
      In three dimensions, or more generally, below the upper critical dimension, scaling laws for critical phenomena seem well understood, for both infinite and for finite systems. Above the upper critical dimension of four, ...
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      Simulation of demographic change in Palestinian territories

      Sumour, Muneer A.; El-Astal, Ali H.; Shabat, Mohammed M.; Radwan, M. A. (World Scientific Publishing Company, 2007)
      Mortality, birth rates and retirement play a major role in demographic changes. In most cases, mortality rates decreased in the past century without noticeable decrease in fertility rates, leading to a significant increase ...
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      Statistical physics applied to stone-age civilization

      Sumour, Muneer A.; Radwan, M. A.; Shabat, Mohammed M.; El-Astal, Ali H. (World Scientific Publishing Company, 2011)
      About 45000 years ago, symbolic and technological complexity of human artefacts increased drastically. Computer simulations of Powell, Shennan and Thomas (2009) explained it through an increase of the population density, ...
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      STONE AGE CULTURE AND DIFFUSION IN ANNEALED RANDOM MEDIA

      Radwan, M. A.; Sumour, Muneer A.; El-Astal, Ali H.; Shabat, Mohammed M. (2013)
      Symbolic and technological complexity of human artifacts increased drastically around 45,000 years ago. Powell, Shennan and Thomas (2009) explained it using a computer simulation of a demographic model through an increase ...
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      Test of universality in anisotropic 3D Ising model

      Sumour, Muneer A.; Stauffer, D.; Shabat, Mohammed M.; El-Astal, Ali H. (North-Holland, 2006)
      Chen and Dohm predicted theoretically in 2004 that the widely believed universality principle is violated in the Ising model on the simple cubic lattice with more than only six nearest neighbours. Schulte and Drope by Monte ...
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      Urban segregation with cheap and expensive residences

      Sumour, Muneer A.; El-Astal, Ali H.; Radwan, M. A.; Shabat, Mohammed M. (World Scientific Publishing Company, 2008)
      In this paper we study urban segregation of two different communities A and B, rich and poor, distributed randomly on finite samples, to check cheap and expensive residences. For this purpose we avoid the complications of ...