Search results for " Navigation"
showing 8 items of 138 documents
Real Time Localization Systems for autonomous navigation: Modelling, Analysis and Control
2021
Questo lavoro di tesi riguarda la derivazione di osservatori ibridi dello stato, analisi e controllo, di sistemi di localizzazione e navigazione in tempo reale (RTLS). In particolare, il framework dei sistemi ibridi è stato utilizzato per tener conto delle dinamiche continue e discrete coinvolte nel processo di stima e della natura sporadica e tempo randomica delle misure provenienti da vari sensori di distanza e/o inerziali. Analisi di convergenza sono state effettuate per dimostrare la stabilità delle soluzioni proposte e la capacità di filtraggio dei rumori presenti nelle misure. Il presente lavoro è corredato dai risultati delle prove sperimentali di laboratorio a conferma della validit…
Accélérer la recherche d'informations grâce aux dispositifs d'interaction : Système de navigation pour les documents numériques
2005
International audience; Cet article présente une démarche qui vise à doter les outils d'interaction tactiles usuels (souris informatique, pavé tactile) d'une commande de prévisualisation des objets désignés. Nous décrivons la genèse du dispositif ainsi que les bénéfices attendus en termes d'agrément d'usage et d'accélération des recherches d'information dans certains contextes (retrouver une page qui a déjà été consultée par exemple). Nous limiterons notre description dans le cadre de cet article aux apports du dispositif à la consultation de documents numériques et en particulier aux sites Internet.
Environmental Enrichment During Adolescence Mitigates Cognitive Deficits and Alcohol Vulnerability due to Continuous and Intermittent Perinatal Alcoh…
2020
Perinatal alcohol exposure affects ontogenic neurodevelopment, causing physical and functional long-term abnormalities with limited treatment options. This study investigated long-term consequences of continuous and intermittent maternal alcohol drinking on behavioral readouts of cognitive function and alcohol vulnerability in the offspring. The effects of environmental enrichment (EE) during adolescence were also evaluated. Female rats underwent continuous alcohol drinking (CAD)—or intermittent alcohol drinking paradigm (IAD), along pregestation, gestation, and lactation periods—equivalent to the whole gestational period in humans. Male offspring were reared in standard conditions or EE un…
Conception de documents numériques : Parcours méthodologique
2009
There is a strong social demand for studies of digital document. Yet our models of society and education are struggling to integrate issues related to these types of documents. However, the subject is less than half a century old, and so it is hardly surprising that the writing and training practices are just being developed. Like the book, the digital document involves many different skills and techniques in its development. The list of jobs tends to grow steadily: ergonomists, referencing specialists, information architects, programmers, designers, integrators ... It is therefore difficult to have a global view on all this know-how and the related methodologies. This special edition seeks…
Définir la structure de navigation : quelques outils méthodologiques
2008
On peut distinguer deux niveaux de structuration des documents numériques. Ces deux niveaux correspondent aussi à deux niveaux de découpage de l'information. le niveau «macro» correspond au découpage de l'information d'un domaine en différentes unités d'informations (écrans). Le niveau inférieur, ou « micro » correspond au découpage de l'information en concept sur chaque écran. Par « macro structuration », on entend donc la structuration du document qui n'est pas forcément visible par l'utilisateur mais qui est perceptible lors des déplacements en son sein. L'objectif de cette structuration est de proposer une arborescence, qui corresponde à l'objet du document numérique. Deux principaux ob…
AsYouLikeHim: Images ofGalileoSince the17thCentury
2003
The Uses of Analogies in Seventeenth and Eighteenth Century Science
2011
The object of this paper is to look at the extent and nature of the uses of analogy during the first century following the so-called scientific revolution.Using the research tool provided by JSTOR we systematically analyze the uses of “analog” and its cognates (analogies, analogous, etc.) in the Philosophical Transactions of the Royal Society of London for the period 1665–1780. In addition to giving the possibility of evaluating quantitatively the proportion of papers explicitly using analogies, this approach makes it possible to go beyond the maybe idiosyncratic cases of Descartes, Kepler, Galileo, and other much studied giants of the so-called Scientific Revolution. As a result a classifi…
Visualising maritime vessel open data for better situational awareness in ice conditions
2018
Situational awareness of maritime vessels in ice conditions is important for the operation of supply chains. In the artic sea areas, the ice conditions pose a major challenge for maritime vessels getting stuck in the ice and being significantly delayed in arrival to harbor. Data science and open data provide new opportunities to overcome these challenges. This paper introduces available open data sources and data visualizations that can be used to develop applications, for example, for detecting maritime vessel collision, predicting estimated time of arrival to harbor, as well as maritime vessel route optimization in ice conditions. The paper begins by introducing available open data source…