Search results for "CTR"

Intégration d’une prospection géophysique dans la démarche de cartographie des sols : Exemple de l’unité expérimentale d’Epoisses

2016

Intégration d’une prospection géophysique dans la démarche de cartographie des sols : Exemple de l’unité expérimentale d’Epoisses. 13. Journées d'Etudes des Sols

Impact of cyclic mechanical stress on the electrical contact resistance between gas diffusion layer and bipolar plates in Polymer Electrolyte Membran…

2018

WHEC 2018, 22nd edition of the WORLD HYDROGEN ENERGY CONFERENCE, Rio de Janeiro, BRESIL, 17-/06/2018 - 22/06/2018; and collisions) and the mechanical clamping stress applied during the stack assembly. The internal stresses come from the shrinking and the swelling of the membrane caused by water content and the difference between the thermal expansion coefficients of the cell components. These mechanical stresses have an impact on the global fuel cell's performance and one of the most sensitive cell's components to this pressure is the Gas Diffusion Layer (GDL). This layer, assembled with the membrane electrode assembly, provides the reactant gases, evacuates the produced heat and …

Design criteria of tubular linear induction motors and generators: A prototype realization and its characterization

2013

In this paper a mathematical model of tubular linear induction machines (TLIM) with hollowed induced part is recalled. Moreover the design criteria of a TLIM with hollowed iron induced part are presented as well as the technological processes to be adopted and the choice of materials to construct the various parts. The methodologies for mechanical assembling and electric wiring are considered too. A prototype with bimetallic induced part has been designed and built. Finally some experimental results on electrical and mechanical variables, when the machines are used as motors, are shown.

Determination of the effective permittivity of dielectric mixtures with the transmission line matrix methodDetermination of the effective permittivit…

2007

In this article, the effective permittivity of two-phase dielectric mixtures is calculated by applying the transmission line matrix (TLM) method. Two slightly different TLM algorithms are considered: a hybrid approach, which combines the TLM method with a subgriding technique based on dual capacitor circuits, to allow a refined description of the material, and a standard or pure TLM approach, which uses a mesh size smaller than the typical dimension of insertions in order to appropriately describe details of the geometry. A study of the statistical distribution of permittivity for insertions in random positions is also presented, showing that the effective permittivity of the mixture tends …

Influence of mobile phone electromagnetic fields on TEOAEs recordings

2006

Hf02 based RRAM: from materials engineering to integrated modules

2015

10 mars 2015; International audience; no abstract

Contratos de suministro de contenidos y servicios digitales: cuando el precio son tus datos personales

2022

Hoy en día, la mayoría de los servicios de redes sociales o mensajería instantánea se ofrecen sin que los usuarios paguen ningún precio gracias a la monetización de sus datos personales. La Directiva 2019/770 ha sido la primera norma de la UE que ha regulado expresamente la utilización de los datos personales como moneda de cambio para el suministro de contenidos y servicios digitales. Esta Directiva ha sido transpuesta recientemente al ordenamiento jurídico español mediante el Real Decreto-ley 7/2021, de 27 de abril, donde se incluyen una serie de modificaciones en el Texto Refundido de la Ley General para la Defensa de los Consumidores y Usuarios y otras leyes complementarias (TRLGDCU). E…

Sleep habits in children affected by autism spectrum disorders: A preliminary case-control study

2017

Introduction: The core of autism spectrum disorders (ASD) consists of alterations of neurological functions that affect the typical developmental trajectory leading to deficits in social interaction and non-verbal behaviors. In general, ASD is diagnosed at age three and many other frequent neurological signs may be present, such as sleep disorders. The aim of study is evaluating sleep habits in a sample of ASD children. Material and methods: The study population consists of 65 ASD children (43 males and 22 females), aged between 2 and 11 years (mean 5.73 ± 2.39 years). The control group consists of 114 children with typical development (68 males and 46 females), aged between 3 and 10 years …

COMPARISON OF CPML IMPLEMENTATIONS FOR THE GPU-ACCELERATED FDTD SOLVER

2011

Three distinctively difierent implementations of convolu- tional perfectly matched layer for the FDTD method on CUDA enabled graphics processing units are presented. All implementations store ad- ditional variables only inside the convolutional perfectly matched lay- ers, and the computational speeds scale according to the thickness of these layers. The merits of the difierent approaches are discussed, and a comparison of computational performance is made using complex real-life benchmarks.

Identification and Experimental Validation of an Induction Motor Thermal Model for Improved Drivetrain Design

2017

The ability of an electric powertrain to perform according to mechanical specifications is equally important as assessing its thermal protection limits, which are affected by its electrical and thermal properties. Although rated parameters (such as power, torque, etc.) are easily accessible in catalogs of equipment producers, more specific properties like mass/length of copper winding, heat dissipation factor, etc., are not available to customers. Therefore, an effective selection of drivetrain components is limited due to the lack of sufficient data and the need to consult critical design decisions with suppliers. To overcome this limitation, we propose a method to estimate the temperature…