Search results for "VAI"
showing 10 items of 5155 documents
L'influence des évènements familiaux dans la formation des revenus
1985
Référence interne : 85013; En décomposant l'expérience professionnelle des hommes et des femmes en fonction d'évènements familiaux marquants, l'objectif est de mesurer l'effet du mariage sur les gains, et de mettre en relation le bénéfice de l'union avec le niveau d'éducation de l'individu. L'approche suivie analyse également le role de la fécondité, en particularisant l'effet de l'espacement des naissances et de l'âge à la première naissance sur les profils de salaires.
Protéger l’enfant ouvrier. La loi du 19 mai 1874, une « législation intermédiaire »?
2017
International audience
Participer pour rendre le travail possible. Les staffs en unités de soins palliatifs
2018
Répondant à un mandat médical particulier — soigner sans guérir —, les professionnels de soins palliatifs font d’une partie du « sale boulot » hospitalier leur cœur de métier. Dans l’incapacité d’y faire face seuls mais aussi pour lutter contre la souffrance au travail, les médecins attendent des personnels paramédicaux qu’ils participent à l’élaboration du soin à travers des réunions pluridisciplinaires nommées « staff ». Cette participation modifie la division du travail habituellement en vigueur à l’hôpital, et entraîne des « charges de la participation » supplémentaires pour les paramédicaux. Mais dans le même temps, les staffs permettent aux paramédicaux de s’approprier les cadres cult…
Are the best available technologies the only viable for energy interventions in historical buildings?
2015
Worth aged buildings represent among the existing buildings a special case when it comes to their energy refurbishment. Unfortunately, the available technologies for building components characterized by high level of thermal performances show, not rarely, a limited compatibility with the architectural integrity of the building. In other words, the so-called Best Available Technologies, which are effectively adopted to optimize the building energy performances, in case of buildings to which a certain artistic, historic and/or architectural merit is recognized, i.e. heritage houses, might determine such kind of conflicts. This situation may lead to the selection of “non-invasive” but less per…
Load Response and Finite Element Modelling of Bonded Loading Hoses
2014
Steel reinforced bonded vulcanized rubber loading hoses are frequently used in offshore oil loading systems. The hoses are used as offloading system between platforms and shuttle tankers and represent a flexible economical feasible solution for hydrocarbon transfer. The reliability of these hoses throughout the service life is an important issue both with respect to operational availability and with respect to environmental safety. Hence, the load bearing capacity of these hoses and the fatigue endurance become matters of concern and important design topics. Due to the large deformation of these hoses and the complicated composite structure in the hose wall, the hoses are difficult to analy…
LNG cold energy use in agro-food industry: A case study in Sicily
2011
Abstract It is known how the complete gasification of liquefied natural gas (LNG) can return about 230 kWh/t of energy. Nevertheless out of fifty-one gasification plants in the world, only thirty-one of them are equipped with systems for the partial recovery of the available energy. At the moment most of these plants mainly produce electric energy; however the employment of the cold energy results very interesting, in fact, it can be recovered for agro-food transformation and conservation as well as for some loops in the cold chain. Cold energy at low temperatures requires high amounts of mechanical energy and it unavoidably increases as the required temperature diminishes. Cold energy reco…
Innovative algorithms for the management of combined RES-BESS systems
2017
The issue of the optimal management of the available energy resources also at end-user level is getting more and more attention. The paper deals with the definition of innovative algorithms for managing electrical storage systems in hybrid photovoltaic and wind plants, also taking into account different pricing periods and a grid emergency condition in which the Utility can request an injection of power by the end-user. Application examples for explaining the operation of the algorithms are presented.
A Multi-Objective Approach to Optimize a Periodic Maintenance Policy
2012
The present paper proposes a multi-objective approach to find out an optimal periodic maintenance policy for a repairable and stochastically deteriorating multi-component system over a finite time horizon. The tackled problem concerns the determination of the system elements to replace at each scheduled and periodical system inspection by ensuring the simultaneous minimization of both the expected total maintenance cost and the expected global system unavailability time. It is assumed that in the case of system elements failure they are instantaneously detected and repaired by means of minimal repair actions in order to rapidly restore the system. A nonlinear integer mathematical programmi…
Analysis, Modeling and Simulation of Complex Regional Clusters Activities, Using Arena Simulation Software
2014
Process modelling is the concise description of the total variation in one quantity, y, by partitioning it into a deterministic component given by a mathematical function of one or more other quantities, x1, x2... plus a random component that follows a particular probability distribution. The models are material or immaterial systems, which represent other systems, so that it may be possible to manipulate the built structures and their states. The main elements of a simulation are: attributes (describe and differentiate entities), variables (system characteristics), resources (whose capacity can be variable), tails (seen in case of unavailability of resources) and statistical accumulators (…
Drifting Down the Technologization of Life: Could Choreography-Based Interaction Design Support us in Engaging with the World and our Embodied Living?
2013
The development of interactive technology is often based on the assumption of need to reduce the physical action and cognitive load of the user. However, recent conceptualizations, supported by research in various fields of science, emphasize human physical action in cognitive processes and knowledge formation. In fact, physical and closely related imaginary movement can be seen as the quintessence of humanity. Acknowledging this should imply a new approach to the design of interactive technology. In the current study, we propose a choreographic approach for shifting the focal point of interaction design to the aspects of human activity and movement within a technologized context. Hence, th…