Search results for "Bma"
showing 10 items of 241 documents
Les "Chartae Burgundiae Medii Aevi" (CBMA) et le numérique
2011
-
Chartae Burgundiae Medii Aevi (CBMA). Du parchemin à l'écran
2013
International audience; Produits par centaines de milliers au Moyen Âge, les actes diplomatiques1 sont probablement les sources les plus mobilisées par une tradition historiographique ancienne de plus de trois siècles. Ils ont été depuis souvent édités et font partie des premiers documents médiévaux à être soumis à des traitements informatiques, dès les années 1970, pour alimenter plus tard des bases de données. S'insérant dans ce contexte, lors de son lancement en 2004, le projet des CBMA2 était forcément électronique, mais aussi, développements technologiques obligent, forcément voué à la diffusion libre et immédiate sur Internet. Le projet envisageait la numérisation, l'enregistrement et…
L'échange dans la documentation diplomatique bourguignonne : autour du vocabulaire des transferts
2013
Cette étude propose une approche du vocabulaire des transferts à partir d'une masse importante de documents diplomatiques médiévaux (VIIIe-XIIIe siècle), réunis principalement au sein de la base des données des CBMA (Chartae Burgundiae Medii Aevi - http://www.artehis-cbma.eu/) soumise au traitement du logiciel Philologic, et mise en regard par rapport aux différentes catégories de sources publiées dans la Patrologie latine. L'analyse de la fréquence et des cooccurrences des formes et dérivés de commutatio, cambio, permutatio a permis de dégager les tendances générales qui concernent et articulent entre eux, le champ sémantique des transferts (la proximité des mots désignant différents types…
ECONOMIC EVALUATION OF AQUACULTURE INVESTMENTS UNDER CONDITIONS OF RISK AND UNCERTAINTY IN THE MEDITERRANEAN SEA
2014
This study aims to analyze, from a technical and ec onomic point of view, the choice between alternative investments in aquaculture under condit ions of risk and uncertainty. In particular, a comparative analysis has been conducted between an inshore and an offshore farm producing European sea bass in the Mediterranean Sea. The app lied model refers to the theory of subjective probability, assigning a different probability to e xpected incomes during the investment period. Resul ts show an economic convenience of inshore with respect to offshore farming.
Dépendance de la fatigue à la longueur musculaire : approche mécanique et neurophysiologique
2006
The objective of this work is to evaluate the fatigue dependency on the knee extensor muscles length. Exercises varying the type of contraction (isometric and eccentric) and intensity of contraction (maximal and sub-maximal) are performed in order to disrupt the neuromuscular system by different factors of fatigue: central and peripheral. These exercises are performed at two muscular lengths (S and L, corresponding respectively to 40 and 100° of knee flexion). Neuromuscular parameters (maximal torque, muscular twitch, voluntary activation level, electromyographic activity, etc.) are analyzed in pre- and post-fatigue conditions in the type of contraction required by the fatiguing exercise. I…
Stochastic response of offshore structures by a new approach to statistical cubicization
2001
This study presents a new statistical cubicization approach for predicting the stochastic response of offshore platforms subjected to a Morison-type nonlinear drag loading. Statistics of the original system are obtained from an equivalent nonlinear system, which is constructed by replacing the Morison drag force by a cubic polynomial function of the relative fluid-structure velocity, up to cubic order. A Volterra series expansion with a finite Fourier series representation is used to approximate the response of the equivalent system. Exact solutions are developed to express the Fourier coefficients of the second and third-order response as functions of the Fourier coefficients of the first-…
Optimal maintenance system for offshore wind turbines
2010
In the last years, the industry of wind power generators has developed in many aspects. The offshore plants have some benefits over the onshore ones but their implementation is really expensive.Based in that cost, this paper describes the importance of applying an optimal maintenance based in priorities and cost. It also studies the maintenance types and proposes a scheme of maintenance for offshore plants.
Effect of a Passive Tuned Mass Damper on Offshore Installation of a Wind Turbine Nacelle
2021
Abstract Although the installation of offshore wind turbines takes place in calm seas, successful mating of wind turbine components can be challenging due to the relative motions between the two mating parts. This work investigates the effect of a passive tuned mass damper on the mating processes of a nacelle for a 10-megawatt (MW) offshore wind turbine. A nacelle with lifting wires and a monopile with a mass damper are respectively modelled using the multibody formulation in the HAWC2 program. A single mass damper is tuned to target at the first natural period of the monopile and is coupled to the main program using a dynamic link library. Afterwards, numerical simulations were carried out…
ANTARES: The first undersea neutrino telescope
2011
The ANTARES Neutrino Telescope was completed in May 2008 and is the first operational Neutrino Telescope in the Mediterranean Sea. The main purpose of the detector is to perform neutrino astronomy and the apparatus also offers facilities for marine and Earth sciences. This paper describes the design, the construction and the installation of the telescope in the deep sea, offshore from Toulon in France. An illustration of the detector performance is given. © 2011 Elsevier B.V. All rights reserved.
Fatigue of Mooring Chains Connected to Offshore Floating Structures Considering Out of Plane Bending Effects
2019
Abstract Reliability against fatigue fracture is an issue of major concern in the design of offshore mooring systems with chain segments. The present paper describes the investigation of the effect of OPB (out of plane bending) and IPB (in plane bending) loading modes on the fatigue performance of chain links in critical positions. The hang-off design at the floater is based on long rods with bearings at the connection points to the floating structure. The purpose of the paper is to shed some light on possible design improvements on the connection design when using the available design guidelines for calculation of combined Tension-Bending fatigue in the mooring line. A challenge when using…