Search results for "material"
showing 10 items of 32550 documents
La metamorfosis de la Web de centro desde el confinamiento
2023
Las tecnologías han desempeñado un papel fundamental como herramienta durante el confinamiento, convirtiéndose la web de centro en uno de los principa les canales de comunicación con familias y alumnado y un lugar para compartir recursos digitales y otros materiales educativos. Technologies have played a fundamental role as a tool during confinement, making the center website one of the main channels of communication with families and students and a place to share digital resources and other educational materials. Las webs escolares han pasado a ser uno de los principales canales comunicativos y principal fuente de recursos durante la pandemia
Proof testing and lifetime reliability of carbon fibre reinforced composite pressure vessels
2013
International audience
Performing Sound of the Past: Remix in Electronic Dance Music Culture
2014
The term remix, defined as an activity of taking data from pre-existing materials to combine them into new forms according to personal taste, relates to various elements and areas of contemporary culture. Whichever model used, consideration of the remix depends on recognition of pre-existing cultural codes. Therefore, as a second layer, the remix relies on the authority of the original and it functions at the meta-level. The audience may see a trace of history with the pre-existing object and the meaning creates in the viewer(s), reader(s), listener(s) or, in the contemporary world of DJs and popular electronic dance music culture – in dancer(s). With the aim of specifying modes of creating…
Scientific writing for impact factor journals
2013
EASARCICAPLivre dispo. dans :hal-00832739, version 1; Publish or Perish. This old adage illustrates the importance of scientific communication; essential to research, it also represents a strategic sector for each country’s competitiveness. An often-neglected topic, scientific communication is of vital importance, with new information technologies accelerating and profoundly changing how knowledge is disseminated. The necessity of optimally disseminating experts’ findings has also become crucial to researchers, institutes and universities alike, which has prompted the recent advent of Impact Factors for the evaluation and financing of research, the goal being for scientific knowledge to be …
Dynamics of hydrofracturing and permeability evolution in layered reservoirs
2015
International audience; A coupled hydro-mechanical model is presented to model fluid driven fracturing in layered porous rocks. In the model the solid elastic continuum is described by a discrete element approach coupled with a fluid continuum grid that is used to solve Darcy based pressure diffusion. The model assumes poro-elasto-plastic effects and yields real time dynamic aspects of the fracturing and effective stress evolution under the influence of excess fluid pressure gradients. We show that the formation and propagation of hydrofractures are sensitive to mechanical and tectonic conditions of the system. In cases where elevated fluid pressure is the sole driving agent in a stable tec…
Sport Coaches Burnout as a Threat to Professional Success, Mental Health and Well-Being
2021
The article explores motivational and personality predictors of burnout syndrome in sports coaches. The study involved 183 sports coaches of 20–63 years old (86.9% women; M=41.34±10.56 years), with professional experience for 13.83±9.98 years. Three components of professional burnout ― Emotional exhaustion, Depersonification and Reduction of professional achievements ― were measured with the adapted Maslach professional burnout inventory (Vodopyanova, et al 2008). Motivational aspects were measured with the adapted Ryan and Connell Professional Motivation inventory (Osin et al, 2017). Personal resources ― stress resistance, authenticity and coping strategies ― were measured with the adapted…
Cybersecurity Attacks on Software Logic and Error Handling Within AIS Implementations: A Systematic Testing of Resilience
2022
To increase situational awareness of maritime vessels and other entities and to enable their exchange of various information, the International Maritime Organization mandated the use of the Automatic Identification System (AIS) in 2004. The AIS is a self-reporting system that uses the VHF radio link. However, any radio-based self-reporting system is prone to forgery, especially in situations where authentication of the message is not designed into the architecture. As AIS was designed in the 1990s when cyberattacks were in their infancy, it does not implement authentication or encryption; thus, it can be seen as fundamentally vulnerable against modern-day cyberattacks. This paper demonstrat…
A methodology for the control of the residual lifetimes of carbon fibre reinforced composite pressure vessels
2005
International audience; Pressure vessels must be periodically proof tested. Traditional techniques for metal vessels are inapplicable for composite vessels as the latter do not break by crack propagation so that the reasoning behind the traditional testing procedures is not appropriate. Damage accumulation leading to the degradation of a composite vessel is by fibre failure. Fibres show a wide distribution in strengths and loading a composite inevitably breaks some. The method which has been developed is supported by an analysis of delayed fibre failure due to the relaxation of the resin around fibre breaks. This provokes overloading of intact fibres neighbouring breaks. The time until a cr…