Browsing Mathemateg a Ffiseg / Mathematics & Physics by Title

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Browsing Mathemateg a Ffiseg / Mathematics & Physics by Title

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  • Mishuris, Gennady; Movchan, Natasha; Movchan, Alexander; Piccolroaz, Andrea (2012-01-14)
    The paper addresses the problem of a Mode III interfacial crack advancing quasi-statically in a heterogeneous composite material, that is a two-phase material containing elastic inclusions, both soft and stiff, and defects, ...
  • Piccolroaz, Andrea; Movchan, Alexander; Mishuris, Gennady (2011-09-06)
    We consider the perturbation problem of a Mode III interfacial crack. The perturbation is of geometrical type and can be both perturbation of the crack faces and perturbation of the interface, which can deviate from the ...
  • Mishuris, Gennady; Mishakin, V.; Linkov, A. M.; Alford, N.; Fradkin, L.; Dobroskok, A. (2009)
    Real-time control of the direction of a propagating crack is little explored area of management of structural integrity. We have examined it with experiments on quasi-static (slow) cracks in PMMA (Polymethyl-Methacrylate). ...
  • Finlayson, C. E.; Whitney, A. D. (2010-03-10)
    We report a photophysical study of photovoltaic blends containing perylene-substituted polyisocyanide (pery-PIC) materials, using time-correlated single photon counting and photo-induced absorption spectroscopy, and compare ...
  • Mughal, Adil; Chan, H. K.; Weaire, D. (2011-03-16)
    We develop a simple analytical theory that relates dense sphere packings in a cylinder to corresponding disk packings on its surface. It applies for ratios R = D/d (where d and D are the diameters of the hard spheres and ...
  • Winningham, D.; Grande, Manuel; Lundin, R.; Barabash, S. (2006)
    Auroras are caused by accelerated charged particles precipitating along magnetic field lines into a planetary atmosphere, the auroral brightness being roughly proportional to the precipitating particle energy flux. The ...
  • Greaves, George Neville; Greer, A. L.; Lakes, R. S.; Rouxel, T. (2011-10-24)
    In comparing a material's resistance to distort under mechanical load rather than to alter in volume, Poisson's ratio offers the fundamental metric by which to compare the performance of any material when strained elastically. ...
  • McMillan, Paul F.; Wilding, Martin Charles; Wilson, Myra Scott; Daisenberger, Dominik; Mezouar, Mohamed; Greaves, G. Neville (2007-10-17)
    Phase transitions in the liquid state can be related to pressure-driven fluctuations developed in the density (i.e., the inverse of the molar volume; ρ = 1/V) or the entropy (S(T )) rather than by gradients in the chemical ...
  • Greaves, G. N. (ScolarOne, 2011-01-21)
    The physics of critical phenomena is well established in systems as diverse as molecular fluids, crystalline alloys and magnetic materials. As the critical point is approached, the susceptibility increases anomalously and ...
  • McMillan, Paul F.; Wilson, Mark; Wilding, Martin C. (2003)
    Supercooled liquids in the Y2O3–Al2O3 system undergo a liquid–liquid phase transition between a high-temperature, high-density amorphous polymorph (HDA form), and one with lower density that is stable at lower temperature ...
  • Plakhov, A. Y. (2004)
    The Monge-Kantorovich problem on finding a measure realizing the transportation of mass from to at minimum cost is considered. The initial and resulting distributions of mass are assumed to be the same and the cost of the ...
  • Hutzler, Stefan; van der Net, Antje; Weaire, Denis; Cox, Simon; Janiaud, Eric (2007-01)
    When the area of a face in a dry foam approaches zero in some quasistatic processes, Plateau's rules dictate that there must be an instability. This is more subtle than generally supposed. We argue that it is generally ...
  • Deb, Sudip K.; Wilding, Martin C.; Somayazulu, Maddury; McMillan, Paul F. (2001-11-29)
    Crystalline and amorphous forms of silicon are the principal materials used for solid-state electronics and photovoltaics technologies. Silicon is therefore a well-studied material, although new structures and properties ...
  • Gohm, Rolf (2003)
    The probabilistic index of a completely positive map is defined in analogy with a formula of M. Pimsner and S. Popa for conditional expectations. As an application, we describe a new strategy for computing the Jones index ...
  • Manero, Octavio (Aberystwyth University, 1980)
    In this thesis we are concerned with the rheological behaviour of industrial liquids such as polymer solutions in complex flow situations and the possibility of predicting this behaviour. Preliminary consideration is ...
  • Barnett, B. N. (Aberystwyth University, 1962)
    Some sequential sampling problems where there in one unknown parameter in a generating stochastic process are considered by Bayesian concepts with the aid of Dynamic Programming equations. Some properties of the ...
  • Plakhov, A. Y.; Gouveia, P. D. F. (2007)
    A two-dimensional body moves through a rarefied medium; the collisions of the medium particles with the body are absolutely elastic. The body performs both translational and slow rotational motion. It is required to select ...
  • Langstaff, David Philip; Evans, David Andrew; Roberts, Owain Rhys; Zhu, Xi (2009-06)
    An extended electron counting detector with a linear array of 1536 pixels across an active area of 38 mm×5 mm is presented. Also presented is an improved control electronics package, based on the National Instruments Compact ...
  • Burgarth, Daniel; Giovannetti, Vittorio (2011-09-27)
    We discuss an explicit protocol which allows one to externally cool and control a composite system by operating on a small subset of it. The scheme permits to transfer arbitrary and unknown quantum states from a memory on ...
  • Finlayson, Chris (2012-01-18)

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