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The aim of this paper is to assess the gain of accuracy obtained by taking into account spatial information for anomaly detection in hyperspectral imaging. A mixture of conditional vector autoregressive model, MixCVAR, is introduced for background pixels. It is exploited to construct an anomaly detector (AD) based on generalized likelihood ratio test (GLRT). In the considered detection task, this...
The neuroprotective properties of cystamine identified in pre-clinical studies have fast-tracked this compound to clinical trials in Huntington's disease, showing tolerability and benefits on motor symptoms. We tested whether cystamine could have such properties in a Parkinson's disease murine model and now provide evidence that it can not only prevent the neurodegenerative process but also can reverse...
In the last years, the i-vector approach became the state-of-the-art in speaker recognition systems. As in previous approaches, i-vector -based systems suffer greatly in presence of additive noise, especially in low SNR cases. In this paper, we will describe a statistical framework allowing to estimate a clean i-vector given the noisy one or to integrate, directly, statistical knowledges about the...
This paper describes solution-cast, spin-coating and hot-press planarization process for preparing metal/polymer magnetic nanocomposites films on silicon. Non-equivalent properties combining non-conducting, high permeability and enhanced permittivity with high percolation threshold are discussed.
This paper deals with land mobile satellite channel modelling and addresses the specific issue of channel impairments in urban environments for mobile applications with a particular focus on multipath modelling and wideband representation of the channel. This paper introduces a new land mobile satellite channel simulator, SCHUN (Simplified CHannel for Urban Navigation), based on a hybrid physical-statistical...
This paper aims at presenting an overview of the state-of-the-art in High Throughput Satellite (HTS) systems for Fixed Satellite Services (FSS) and High Density-FSS. Promising techniques and innovative strategies that can enhance system performance are reviewed and analyzed aiming to show what to expect for next generation ultra-high capacity satellite systems. Potential air interface evolutions,...
The purpose of this document is the definition and the assessment of a new low-altitude HEO satellite constellation to support tactical communications on high latitude theatres. This includes both low bit rate personal mobile communications and short and long range broadband communications (UAVs, inter-connection to commandment center). The characteristics of low altitude HEO orbit are detailed and...
The epitaxial growth of lead-free ferroelectric Na0.5Bi0.5TiO3 (NBT) thin films on various single crystal substrates was successfully achieved, using the pulsed laser deposition technique (PLD). The present work is divided in two parts, focused on: (i) the growth of NBT layers on c- and r-sapphire (Al2O3) substrates, with and without introducing a CeO2 buffer layer, and (ii) the growth of NBT layers...
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