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In areas of difficult access, such as the arctic ones, the extraction of inter- est zones (e.g. glaciers) from satellite images may be a valuable way to study and monitor their status . This work faces in particular the prob- lem of detecting different zones of glaciers from SAR (Synthetic Aperture… |
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Most operational models in atmospheric physics, meteorology and climatology nowadays adopt spherical geodesic grids and require ad hoc developed interpolation procedures. The author does a comparison between chosen representatives of linear, distance-based and cubic interpolation schemes… |
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Functionally graded materials (FGMs), possessing properties that vary smoothly from one region to another,
have been receiving increasing attention in recent years, particularly in the aerospace, automotive and
biomedical sectors. However, they have yet to reach their full potential. In this paper… |
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Hybrid particle-continuum computational frameworks permit the simulation of gas flows by locally adjusting the resolution to the degree of non-equilibrium displayed by the flow in different regions of space and time. In this work, we present a new scheme that couples the direct simulation Monte… |
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REFIR is a Fourier Transform Spectrometer designed to measure the upwelling IR Earth's emission from space in the spectral range 100 to 1000 cm -1 with an unapodized spectral resolution of about 0.5 cm -1. One of the main scientific objectives of REFIR is to monitor the far IR planetary emission… |
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Nondestructive evaluation of hidden surface damage by means of stationary
thermographic methods requires the construction of approximated solutions
of a boundary identification problem for an elliptic equation. In this paper,
we describe and test a regularized reconstruction algorithm based on the… |
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Advanced persistent threats (APTs) have rocketed over the last years. Unfortunately, their technical characterization is incomplete--it is still unclear if they are advanced usages of regular malware or a different form of malware. This is key to develop an effective cyberdefense. To address this… |
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The definition of the Simon tensor, originally given only in Kerr spacetime and associated with the static family of observers, is generalized to any spacetime and to any possible observer family. Such generalization is obtained by a standard '3 + 1' splitting of the Bianchi identities, which are… |
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We are concerned with the numerical study of a simple one-dimensional Schr\"odinger operator $-\frac 1 2 \Dxx + \alpha q(x)$ with $\alpha \in \Re$, $q(x)=\cos(x)+\eps \cos(kx)$, $\eps >0$ and $k$ being irrational. This governs the quantum wave function of an independent electron within a… |
