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Sap transport in trees has long fascinated scientists, and a vast literature exists on experimental and modelling studies of trees during the growing season when large negative stem pressures are generated by transpiration from leaves. Much less attention has been paid to winter months when trees… |
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Remote sensing of atmosphere is changing rapidly thanks to the development of high spectral resolution infrared. space-borne sensors. The aim is to provide more and more accurate information on the lower atmosphere, as requested by the World Meteorological Organization (WMO), to improve reliability… |
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Objective. Empirical observations show that rowers demonstrate higher efficiency working on the rowing ergometer than working on water. The aim of the study was to determine the difference in efficiency levels and to verify its validity using a model based on fluid dynamics principles.
Methods. A… |
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Nowadays, Predictive Maintenance is a mandatory tool to reduce the cost of production in the semiconductor industry. This paper considers as a case study a critical part of the electrochemical deposition system, namely, the four Pins that hold a wafer inside a chamber. The aim of the study is to… |
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In this paper we present an implementation for the QPACE supercomputer of a Lattice Boltzmann model of a fluid-dynamics flow in 2 dimensions. QPACE is a massively parallel application-driven system powered by the Cell processor. We review the structure of the model, describe in details its… |
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We consider a hyperbolic conservation law with discontinuous flux.
Such a partial differential equation arises in different applications, in particu-
lar we are motivated by a model of traffic flow. We provide a new formulation
in terms of Riemann Solvers. Moreover, we determine the class of… |
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This paper is concerned with improving the performance of certain Markov chain algorithms for Monte Carlo simulation. We propose a new algorithm for simulating from multivariate Gaussian densities. This algorithm combines ideas from coupled Markov chain methods and from an existing algorithm based… |
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We investigate the transfer properties of energy and helicity fluctuations in fully developed homogeneous and isotropic turbulence by changing the nature of the nonlinear Navier-Stokes terms. We perform a surgery of all possible interactions, by keeping only those triads that have sign-definite… |
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