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(American Institute of Physics, 2012-01-24)Classical equilibrium molecular dynamics(MD) simulations have been performed to investigate dynamical properties of cage radial breathing modes and intra- and inter-cage hydrogen migration in both pure hydrogen and mixed ...
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(Nenagh Guardian, 2010-11-06)In the wake of the Ryan and Murphy report, many previously untold stories about life in Ireland have got told. The telling of these stories has brought great relief to many but it has also presented difficulties. Telling ...
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(Elsevier, 2008-04-08)A new method is presented to determine the mode shapes and frequencies of uniform systems consisting of chains of masses and springs of arbitrary number with arbitrary boundary conditions. Instead of the classical eigenproblem ...
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(IEEE, 2009-08)The aim of this paper is to apply an approach that will allow us to consider different mechanical modes of a MEMS cantilever in the form of separate mass-spring-damper equations with the appropriate form of an external ...
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(Elsevier, 2009-12)The determination of the natural frequencies and mode shapes of structures requires an analytical, semi-analytical or numerical method. This paper presents a new semi-analytical approach to determine natural frequencies ...
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(IEEE, 2010-05)In this paper, we study the possible output of the pulsed digital oscillator (PDO) with multiple resonant modes of the mechanical resonator in the feedback loop. PDOs are simple circuits that allow linear resonators to ...
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(University College Dublin; School of Economics, 2007-03)Travel-to-work mode choice patterns are analysed for a number of key employment sub-centres in the Dublin region. Geographical Information System (GIS) visualisations and regression analysis are used to identify a small ...
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(University College Dublin. School of Economics, 2012-10)In this paper we directly test the proposed productivity hierarchy of direct, indirect and non-exporters using firm-level data from 105 developing and transition countries. Using both regression analysis and propensity ...
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(IEEE, 2010-08)As power systems evolve to incorporate greater penetrations of variable renewables, the demand for flexibility within the system is increased. Combined-cycle gas turbines are traditionally considered as relatively ...
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(Elsevier Science B.V., 1997-03)This paper investigates the conditions under which a dynamic, stochastic macroeconomic model with many interacting agents will exhibit the ‘small shocks, large shocks’ property that is often said to characterize observed ...