139 research outputs found
Performance of a Protected Wireless Sensor Network in a Fire. Analysis of Fire Spread and Data Transmission
The paper deals with a Wireless Sensor Network (WSN) as a reliable solution for capturing the kinematics of a fire front spreading over a fuel bed. To provide reliable information in fire studies and support fire fighting strategies, a Wireless Sensor Network must be able to perform three sequential actions: 1) sensing thermal data in the open as the gas temperature; 2) detecting a fire i.e., the spatial position of a flame; 3) tracking the fire spread during its spatial and temporal evolution. One of the great challenges in performing fire front tracking with a WSN is to avoid the destruction of motes by the fire. This paper therefore shows the performance of Wireless Sensor Network when the motes are protected with a thermal insulation dedicated to track a fire spreading across vegetative fuels on a field scale. The resulting experimental WSN is then used in series of wildfire experiments performed in the open in vegetation areas ranging in size from 50 to 1,000 m2
Contribution of CPLEAR to the physics of the neutral kaon system
We present the physics results of the CP-- and CPT--violation measurements performed by CPLEAR. CPLEAR has experimentally determined for the first time, the violation of T invariance and is able to disentangle all the CP-- and CPT--violating quantities from each other. This allows each of the CPT violating parameters to be determined with a precision of a few and, in particular, the mass and width equality between the \kn and \knb to be tested down to the level of GeV. Moreover, the precision of the CPLEAR measurements allows us to probe for the first time physics on a scale approaching the Planck mass
A new determination of the K - K mass difference and the phase of the CP violation parameter from an evaluation of experimental data
Pasquale Paoli et sa documentation sur les régimes mixtes de l’Antiquité
International audienc
Imitatio , aemulatio , comparatio Alexandri : usages et mésusages
International audienceIn the second half of the 20th century, three “categories” were introduced by scholars to serve the study of the reception of Alexander the Great in Rome: imitatio, aemulatio and comparatio Alexandri. We propose to examine, through three practical cases, the problems generated by the use of these categories, and in particular an overly strict interpretation of them.Dans la deuxième moitié du xxe siècle, trois “catégories” ont été introduites par les savants pour servir l’étude de la réception d’Alexandre le Grand à Rome : l’imitatio, l’aemulatio et la comparatio Alexandri. Nous nous proposons d’examiner par trois cas pratiques les problématiques engendrées par l’utilisation de ces catégories, et notamment une interprétation trop rigoriste de ces dernières
The reception of the image of Alexander by the Roman aristocracy, from the origins to the principate of Augustus
Cette thèse vise à appréhender la réception de l’image d’Alexandre III de Macédoine par l’aristocratie romaine, sur une période allant des origines de la question jusqu’au principat d’Auguste. L’enjeu est donc de proposer des conclusions nouvelles relatives à la réception d’Alexandre par un certain nombre de personnages, mais aussi d’examiner le rapport à Alexandre de manière diachronique. Dès le troisième siècle avant notre ère, les Romains mettent en oeuvre un discours sur Alexandre, ou plutôt des discours. Ces derniers peuvent présenter les Romains comme vainqueurs du Macédonien par procuration, le dénigrer, ou encore tenter de récupérer son héritage. En parallèle, un certain nombre d’aristocrates romains suivant la voie du Macédonien par l’imitatio ou l’aemulatio. Les discours relatifs à Alexandre, qu’ils se manifestent dans les sources littéraires ou numismatiques, peuvent aussi bien être adressés à un public grec ou hellénisant qu’à un public romain. Il est donc un outil politique efficace, utilisé aussi bien dans l’Vrbs que dans les provinces orientales.This thesis aims at apprehending the reception of the image of Alexander III of Macedonia by the Roman aristocracy, over a period going from the origins of the question to the principate of Augustus. The challenge is therfore to propose new conclusions concerning the reception of Alexander by certain characters, but also to examine the relationship to Alexander diachronically. As early as the third century BCE, the Romans implemented a discourse on Alexander, or rather discourses. They can present the Romans as victors of the Macedonian, denigrate him, or even try to recover his heritage. At the same time, a number of Romain aristocrats followed the Macedonian’s path through imitatio or aemulatio. The discourses relating to Alexander, whether they appear in literary or numismatic sources, can be addressed to a greek or hellenizing public as wall as to a roman one. It is therefore an effective political tool, used in the Vrbs as well as in the eastern provinces
Pietro Cirneo et Anton Pietro Filippini : deux interprétations de l’histoire ancienne de la Corse
Cette contribution présente les interprétations historiques relatives à la Corse romaine issues de deux auteurs insulaires des xve et xvie siècles, Pietro Cirneo et Anton Pietro Filippini. Le premier de ces auteurs avait à cœur de combattre les clichés sur ses compatriotes véhiculés en Italie par les textes de Strabon ou Sénèque. Le second, sans avoir un tel dessein, a permis à des érudits du xixe siècle de créer de toutes pièces une bataille des campi Mirtei pour projeter le topos de leur temps sur l’Antiquité.This contribution presents the historical interpretations relating to Roman Corsica from two insular authors of the 15th and 16th centuries, Pietro Cirneo and Anton Pietro Filippini. The first of these authors was keen to combat the clichés about his compatriots conveyed in Italy by the texts of Strabo or Seneca. The second, without having such a purpose, allowed 19th century erudites to create a battle of the campi Mirtei to project the topos of their time on Antiquity
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