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Comments on the Paper "On the Asymmetric Yield Surface of Plastically Orthotropic Materials: A Phenomenological Study" by C. Liu, Y. Huang and M.G. Stout, Acta materialia 45 (1997) 2397
No full textIt is shown that plasticity theory by Liu et al. (1997) is a particular case within the constitutive framework presented by Zolochevsky in the early 1980s for the initially anisotropic materials with tensioncompression asymmetry. Such constitutive framework was applicable to a number of structural materials in different physical states (nonlinear elasticity, plasticity by slip, creep). In this way, model predictions were compared with the experimental data at multiaxial loadings. Also, this constitutive framework was incorporated into ABAQUS, ANSYS and in-house developed software in a form of the computer-based structural modeling tools. Practical recommendations are formulated when plasticity theory by Liu et al. (1997) can be used in the applications
Information and communication technology use among children separated from one or both parents: A scoping review
No full textInternational audienceBackgroundThe development and diversification of information and communication technology (ICT) are changing the way family members communicate with each other, creating new opportunities for interaction. When children and parents do not live together on a day-to-day basis, these technologies may represent privileged means to keep in touch and maintain a relationship.ObjectiveThis article aims to review the literature on the use of ICT among children separated from one or both parents, paying particular attention to two contexts: parental separation and foster care.MethodA scoping review was conducted using the Arksey and O'Malley (2005) framework and the PRISMA Extension for Scoping Reviews guidelines (Tricco et al., 2018). The data were analyzed using thematic analysis.ResultsOf the 847 references identified, 11 were selected (six related to parental separation and five related to foster care). The literature dated from 1997 to 2020 and was particularly sparse and heterogeneous (e.g., the definition of ICT and characteristics of participants). Three topics emerged: (a) ICT practices and usage patterns, (b) ICT practices: opportunities and issues, and (c) sociolegal support issues.ImplicationThis study highlights the need for all legal and psychosocial actors to consider the place of digital technology in family relationships
La résilience dans l'humanitaire, un concept pour penser autrement la gouvernance des catastrophes socio-climatiques - Thèse soutenue en vue de l'obtention du grade de docteur en science politique
No full textMultimodal Vision Transformers with Forced Attention for Behavior Analysis
No full textInternational audienceHuman behavior understanding requires looking at minute details in the large context of a scene containing multiple input modalities. It is necessary as it allows the design of more human-like machines. While transformer approaches have shown great improvements, they face multiple challenges such as lack of data or background noise. To tackle these, we introduce the Forced Attention (FAt) Transformer which utilize forced attention with a modified backbone for input encoding and a use of additional inputs. In addition to improving the performance on different tasks and inputs, the modification requires less time and memory resources. We provide a model for a generalised feature extraction for tasks concerning social signals and behavior analysis. Our focus is on understanding behavior in videos where people are interacting with each other or talking into the camera which simulates the first person point of view in social interaction. FAt Transformers are applied to two downstream tasks: personality recognition and body language recognition. We achieve state-of-the-art results for Udiva v0.5, First Impressions v2 and MPII Group Interaction datasets. We further provide an extensive ablation study of the proposed architecture
Oeuvre collective et oeuvre de collaboration : c’est fresque la même chose – CA Aix-en-Provence, 8 décembre 2022, RG n° 19/11225
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How to collaborate for green innovations? A perspective from innovation ecosystems
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Les community organizers, des intermédiaires politiques invisibles ?
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La division nord/sud à Dublin : entre urbain, langue et identité
No full textInternational audienceIl paraît difficile de parler de Dublin sans évoquer la Liffey, fleuve emblématique qui sépare la ville en deux parties : l’une au nord et l’autre au sud. Plus qu’un simple marqueur géographique, la Liffey se pose comme marqueur spatial symbole d’une rupture linguistique supposée entre accents du nord et du sud de Dublin. La topographie dublinoise nourrit en effet de nombreuses perceptions et représentations, et constitue en cela un ancrage identitaire fort : un Dublinois du nord (northsider) ne serait pas à confondre avec un Dublinois du sud (southsider), de même que l’anglais dublinois du nord de la ville (northside Dublin English) ne serait pas à confondre avec celui du sud de la ville (southside Dublin English).Cette communication aura pour objectif de tenter de comprendre comment l’identité dublinoise s’est construite en prenant en compte des éléments tels que l’histoire de Dublin, sa topographie, ses habitants et leurs perceptions et représentations, son paysage socio-urbain ou encore la variation linguistique
