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The combined effect of connectivity and dependency links on percolation of networks
Percolation Networks Cascade of failures Dependency links
2011/9/13
Percolation theory is extensively studied in statistical physics and mathematics with applications in diverse fields. However, the research is focused on systems with only one type of links, connectiv...
Market efficiency, anticipation and the formation of bubbles-crashes
renormalization group, sociophysics, opinion dynamic, finance
2011/8/31
A dynamical model is introduced for the formation of a bullish or bearish trends driving an asset price in a given market. Initially, each agent decides to buy or sell according to its personal opinio...
Modelling Complexity: the case of Climate Science
Uncertainty, Probability, Climate Models, Climate Change, Climate Variability, Spatial scales, Time scales, Chaos, Numerical Methods, Irreversibility, Entropy Production, Energy Balance
2011/8/30
We briefly review some of the scientific challenges and epistemological issues related to climate science. We discuss the formulation and testing of theories and numerical models, which, given the pre...
Electrode Polarization Effects in Broadband Dielectric Spectroscopy
Electrode Polarization Effects Broadband Dielectric Spectroscopy
2011/9/9
In the present work, we provide broadband dielectric spectra showing strong electrode polarization effects for various materials, belonging to very different material classes. This includes both ionic...
Engineering the magnetic properties of the Mn$_{13}$ cluster by doping
Engineering the magnetic properties Mn
2011/9/9
With a goal to produce giant magnetic moment in Mn13 cluster which will be useful for practical applications, we have considered the structure and magnetic properties of pure Mn13 cluster and substitu...
Anisotropic elasticity in confocal studies of colloidal crystals
vibrational states colloidal crystals
2011/9/9
We consider the theory of uctuations of a colloidal solid observed in a confocal slice. For a cubic crystal we study the evolution of the projected elastic properties as a function of the anisotropy ...
Frictional damping in radiative electrodynamics and its scaling to macroscopic systems
Abraham-Lorentz-Dirac equation, radiation force, Unruh radiation,frictional dissipation
2011/8/30
Radiation force in Abraham-Lorentz-Dirac equation is revisited for possible signature of irreversible action in the dynamics. The analysis shows that the classical electron can ‘dissipate’ out a certa...
The Curious Case of Lemaitre's Equation No. 24
English translation Lemaitre's Equation No. 24
2011/8/30
In August of 1961 Abb?Georges Lema顃re told me (with a twinkle in his eyes) that, being a priest, he felt a slight bias in favor of the idea that the Universe had been created. It must therefore have b...
What is perhaps most intriguing about de Broglie’s statement is the last line in which he suggests that a proper rendering of physical reality requires some ‘indefinable fusion’ of the continuous and ...
Phase transition in the Sznajd model with independence
Social systems Spin chain models Scaling phenomena in complex systems
2011/8/29
We propose a model of opinion dynamics which describes two major types of social influence - conformity and independence. Conformity in our model is described by the so called outflow dynamics (known ...
Urban chaos and replacement dynamics in nature and society
bifurcation chaos fractal dimension logistical map replacement dynamics Volterra-Lotka’s model urbanization
2011/8/29
Many growing phenomena in both nature and society can be predicted with sigmoid function. The growth curve of the level of urbanization is a typical S-shaped one, and can be described by using logisti...
Einstein's `Zürich Notebook' and his Journey to General Relativity
the gravitational field equations Einstein’s Z¨urich Notebook
2011/8/29
On the basis of his ‘Z¨urich Notebook’ I shall describe a particularly fruitful phase in Einstein’s struggle on the way to general relativity. These
research notes are an extremely illuminating sourc...
Prandtl number effects in MRT Lattice Boltzmann models for shocked and unshocked compressible fluids
lattice Boltzmann method compressible flows multiple-relaxation-time Prandtl number shock wave reaction
2011/9/9
For compressible fluids under shock wave reaction, we have proposed two Multiple-Relaxation-Time (MRT) Lattice Boltzmann (LB) models [F. Chen, et al, EPL 90 (2010) 54003; Phys. Lett. A 375 (2011) 2129...
Equilibrium Clusters in Concentrated Lysozyme Protein Solutions
equilibrium clusters, salt-free lysozyme solutions, short-range attraction and weak long-range repulsion effective potential, scattering experiments.
2011/9/9
We have studied the structure of salt-free lysozyme at 293 K and pH 7.8 using molecular simulations and experimental SAXS effective potentials between proteins at three volume fractions, f = 0.012, 0....
Composite Social Network for Predicting Mobile Apps Installation
Social Network Mobile Apps
2011/9/9
We have carefully instrumented a large portion of the population living in a university graduate dormitory by giving participants Android smart phones running our sensing software. In this paper, we p...