Numerical Simulation of the Heat Transfer in a Refrigerated Trailer Equipped with Eutectic Plates for Frozen Food Delivery

The present work reports the Computational Fluid Dynamics simulation and analysis of the heat transfer inside a refrigerated truck trailer equipped with three eutectic plates and fans. The numerical model solves the conjugated heat transfer inside the trailer in 2D using the �� −�� Shear Stress Transport (SST) turbulence model. It has been already favorably validated against the numerical and experimental data of Lafaye de Micheaux el al. (2015) by Croquer et al. (2019). These simulations are used to improve the configuration of the refrigeration system with the eutectic plates as well as to investigate the feasibility of the eutectic plates for the transport of frozen food products under different operating loads and transport temperature requirements. Three eutectic plates having an optimal inter-plate distance of 6 cm to maximize the air flow between the plates (Croquer et al., 2019) are either placed in series on the roof of the trailer or vertically at its back. For both configurations, fans are blowing the air from the eutectic plates to the inside of the trailer and modeled by adding a source term into the momentum equations. During the door opening period, the configuration with the plates placed on the roof of the trailer without the cargo has noticeably lower area-averaged temperature inside the trailer than the configuration with the plates placed on the back of the trailer due to the presence of the circulation zones and the cold plates located near the doorway. However, introduction of the cargo into the simulations eliminates the formation of the circulation zones that prevents the infiltration of the atmospheric air. Also, the configuration with the plates placed on the roof of the trailer allows the atmospheric air to infiltrate earlier, therefore resulting in an overall higher temperature observed in the cargo

WHO draft guidelines on dietary saturated and trans fatty acids: time for a new approach?

The 2018 WHO draft guidelines on dietary saturated fatty acids and trans fatty acids recommend reducing total intake of saturated fat and replacing it with polyunsaturated and monounsaturated fatty acids. The recommendations fail to take into account considerable evidence that the health effects of saturated fat varies depending on the specific fatty acid and on the specific food source. Maintaining general advice to reduce total saturated fatty acids will work against the intentions of the guidelines and weaken their effect on chronic disease incidence and mortality. A food based translation of the recommendations for saturated fat intake would avoid unnecessary reduction or exclusion of foods that are key sources of important nutrients

Analyse Transactionnelle Suisse romande – Recueil d'articles 2020

Articles diffusés par l'Association Suisse d’Analyse Transactionnelle – Suisse romande durant l'année 2020. Articles - Qu’est ce que l’AT apporte au monde ? - Enseignement spécialisé et AT – Entrevue - Conseil pédagogique et AT – Entrevue - L’accouchement-marathon - Les enjeux relationnels de la coopération - Les étapes de la coopération - La fosse de rösti – une mine d’or pour des expériences sur la diversité -La complexité par la diversité – Quelle signification pour la gestion des organisations ? - L’économie de l’autonomie – Les martiens ont-ils disparu ? - La coopération dans les institutions et hôpitaux – Entrevue Résumés - Le sens des valeurs que l’on porte - Interventions dans l’accompagnement professionnel de couples - Brunch entre amis - Lors des moments difficiles, l’AT nous porte - Counselling de couple avec AT et sexualité : un couple inégal ? - On devait toujours parler de tout... discussion père fille Divers - Éditorial - Prendre soin de nous durant la pandémie - Célébrons Fanita English, joyeux 104e anniversaire - Pleine conscience – regards croisés : retour sur la journée de l’ASAT-SR - Hommages à Jenni Hine - Entrevue avec Sally Cuénin - Anciens numéro

Concept Bases: A Support to Information Systems Integration

Abstract. In this paper, we describe a technique for integrating heterogeneous information systems using concept bases. A concept base is build on top of each system to integrate, in order to semantically enrich its description. Each concept is described at three different levels: terminological definition, formal characterization, and representation in the underlying system. The different concept bases are then used to compare the concepts represented in the different systems and to establish correspondences between them in order to facilitate communication, cooperation, or integration. Our approach relies on results of the ConcepTerm project, dedicated to the study of concept dictionary building methodology and process. We also show that the building of a concept base can benefit database design and high-level interface definitions.

Concept bases: A support to information systems integration

In this paper, we describe a technique for integrating heterogeneous information systems using concept bases. A concept base is build on top of each system to integrate, in order to semantically enrich its description. Each concept is described at three different levels: terminological definition, formal characterization, and representation in the underlying system. The different concept bases are then used to compare the concepts represented in the different systems and to establish correspondences between them in order to facilitate communication, cooperation, or integration. Our approach relies on results of the ConcepTerm project, dedicated to the study of concept dictionary building methodology and process. We also show that the building of a concept base can benefit database design and high-level interface definitions

The WanderVögel project

The lnternet is unveiling a new era for information dissemination where a very large number of users can openly access a huge information space. The Internet is also becoming an important support for business activities because it offers many desirable features that are lacking in most traditional media (e.g., television and newspaper) such as interactivity and user feedback capabilities. These features will allow for a more effective management of the relationship between business providers and potential customers, which is of foremost importance for market efficiency. On one hand, business providers will be able to achieve a better knowledge of customers' interests. On the other hand, customcrs will benefit from a easier access to business offers. Presently the Internet only provides weak support to business providers compared with what can be achieved with this kind of media. In this paper we discuss what we think is the support that business providers are expecting from the lnternet and what kind of innovative marketing strategies can be implemented with it in order to achieve improved market efficiency. We then present an architecture to implement such a support which represents the kernel of the WanderVögel project. The architecture revolves around an identification-action mechanism. The mechanism collects information dynamically about user exploration profiles and attempts to identify user interests on-the-fly. Identification information is then submitted to a fuzzy-control engine which may trigger actions in response to specific identifications. The fuzzy-control engine is able to react to both interest identification and interest reinforcement which allows for the implementation of powerful user interest-aware information access strategies

Continuité pédagogique : la question des ressources numériques éducatives à domicile (dans un ancrage territorial et délimité).

International audienc

Chapitre 3. La continuité pédagogique : mise à l'épreuve de l'éducation distancée au niveau des ressources et des liens ancrés dans un territoire

International audienc