Search results for "sig"
showing 10 items of 19670 documents
Una possible intepretazione junghiana dell’insight di Kekulé
2012
Paysage et risque sanitaire - Le cas de l'echinococcose alvéolaire. Approche multiscalaire
2005
Echinococcus multilocularis is a parasite of public health importance causing the fatal zoonotic disease alveolar echinococcosis. The parasite's eggs are dispersed in the environment through the fox faeces. Epidemiological issues associated with the disease led to the monitoring of the endemic status in foxes in France and in Europe. Fox faeces collected in the field were tested for the presence of the parasite and assembled in a georeferenced database. GIS-assisted analysis investigated relationships between landscape characteristics and potential risk. Three scale levels were successively explored. In the french Doubs département located in a high endemicity area, binary logistic regressi…
economics in the mirror of the financial crisis
2011
The structure of the Chapter is as follows. In Section 2 I discuss some of the factors that may have played a role in causing the crisis and emphasise that supporters of different economic theories will assign different weights to each factor in their analyses. As a consequence, suggested economic policies are highly sensitive to the economic theory employed in evaluating the set of causes. In Section 3 I seek to defend economists from the common charge that their inability to foresee the crisis is a clear sign of the lack of scientific status of their discipline. In my view, the main liability of mainstream economics lies elsewhere, in its excessive trust on the self-equilibrating mechanis…
Standardization of Road Danger Signs in the European Union
2015
The aim of this research is to find a solution for the standardization of road signs in the EU zone by a comparative analysis of different national sign systems to establish a common set from a single country. This work is based on the idea that road sign standardization might increase the safety level of transnational journeys and foster the relationships among the various members of the EU Community. This paper presents the outcome of the first step of the research, which focuses on the harmonization of danger signs. In more detail, a multicriteria approach is applied to rank 19 EU Member States on the basis of three main aspects: the installation cost of new signs, new sign learning issu…
Omnidirectional Robot Construction at the Math Class
2017
The goal for this workshop is to expose participants to an example of the Experience Workshop Math-Art Movement’s implementation of robot-design and construction in the mathematics classroom. While participants experiment with solving the problem of how to build an omnidirectional robot—a vehicle capable of driving in any direction in a 2D plane—several physical phenomena and properties can be discovered through geometrical measurements and mathematical calculations. After the mechanical problems have been resolved, the participating students can develop individual character to their robots by improving the aesthetics of their design, while also considering practical and technological quest…
FROM A COLLABORATIVE DESIGNING OF STORYTELLING TO A ROBOTIC AND VIRTUAL WORLD REPRESENTATION
2012
This paper presents an experiential learning lab focused on building a digital storytelling using both robots with LEGO Mindstorms and virtual worlds with Kodu Game Lab. The experiential laboratory (32 hours) has involved 33 children of secondary schools in a collaborative learning setting in formal (school labs) and informal learning context (external cultural association). In a first phase of the activity children used Lego Mindstorm robotic kits, assembling them and creating a physical environment (pasterboard arenas) where robots were programmed for moving and taking actions. In a second phase children were invited to transfer the physical world built for robots in a new digital storyte…
Contributions à l’imagerie polarimétrique et à ses applications en vision pour la robotique
2019
Ce mémoire présente le bilan de l'ensemble de mes travaux de recherche effectués de septembre 2006 à juin 2019 au sein de l'équipe Creusotine du laboratoire Le2i devenue équipe Vibot ERL CNRS 6000 depuis janvier 2018. Les principales activités de recherche que j'ai menées au cours de ces 10 dernières années autour de l'imagerie polarimétrique, de la vision omnidirectionnelle et de leurs applications en vision pour la robotique seront particulièrement détaillées dans ce document. Elles seront présentées selon deux grandes parties : la première concernera plutôt l'aspect mise en œuvre et calibrage des caméras et la seconde se concentrera sur les applications potentielles en vision pour la rob…
Robustifying principal component analysis with spatial sign vectors
2012
In this paper, we apply orthogonally equivariant spatial sign covariance matrices as well as their affine equivariant counterparts in principal component analysis. The influence functions and asymptotic covariance matrices of eigenvectors based on robust covariance estimators are derived in order to compare the robustness and efficiency properties. We show in particular that the estimators that use pairwise differences of the observed data have very good efficiency properties, providing practical robust alternatives to classical sample covariance matrix based methods. peerReviewed
Nasium : Sondage archéologique à Saint-Amand-sur-Ornain " Le Cul de Breuil "
2010
Ce rapport de fouille présente les résultats d'un sondage archéologique mené au cœur du site de Nasium, à l'interface entre l'oppidum celtique et l'agglomération antique. Le système de voirie qui relie ces deux , dans le prolongement d'une des portes principales de l'oppidum, a été ainsi révélé, associé à des structures à caractère funéraire ou rituel. La chronologie de ces vestiges, centrée sur les dernières décennies du Ier siècle avant J.-C., correspond à la période durant laquelle l'oppidum est abandonné au profit de la plaine alluviale de l'Ornain. Par ailleurs, la découverte de plusieurs centaines de clous de chaussure militaires et de céramiques d'origine italique pose la question du…
Roque Barcia Martí (1821-1885). Una biografía intelectual de un republicano federal
2019
Esta Tesis doctoral tiene como objeto analizar la trayectoria de la democracia republicana en la segunda mitad del siglo XIX desde la experiencia del escritor federal Roque Barcia Martí (Sevilla, 1821 – Madrid, 1885). Poeta, viajero y literato en su juventud, empezó a despuntar como figura destacada del republicanismo en el Bienio Progresista. A lo largo de su agitada vida pública fue autor prolífico, propagandista, revolucionario, exiliado, diputado a Cortes en 1869, 1871 y 1873, senador en 1872 y cabecilla del Cantón de Cartagena. Las posibilidades de que un desarrollo vital, profesional y político como el suyo cristalizara en las décadas centrales del siglo XIX tiene que ver tanto con la…