322 research outputs found
particleShear: Discrete Python particle simulation with digital rheology and stress tensor evaluation
No full textparticleShear: Python package for particle shear simulation
This package provides a discrete particle simulation kit for having multiple spheres interacting. The spheres (i.e. 2D circles) interact by mutual elastic repulsion and tangential friction upon contact, but can also be crosslinked together. In addition to the elementary implementation of the interacting particles, it is also possible to define rheological experiments where the spheres are exposed to sinusoidally varying displacement conditions on the boundaries. We paid particular attention to avoid pitfalls that generate asymmetric stress tensors.
Acknowledgement: Thanks from the author go to Fabien Bonini and Joé Brefie-Guth for package testing, and to Daniel Lyobenov for initial help with simulation setup.
This repository archives the releases of the source code hosted at https://github.com/tbgitoo/particleShear. The package is available through the Python package server (see https://pypi.org/project/particleShear/1.0.2/). It can be installed automatically in python via
pip3 install particleShear
In some installations, the command may also be pip install particleShear; the minimal version of Python is 3.
Optimizing construction of scheduled data flow graph for on-line testability
No full textThe objective of this work is to develop a new methodology for behavioural synthesis using a flow of synthesis, better suited to the scheduling of independent calculations and non-concurrent online testing. The traditional behavioural synthesis process can be defined as the compilation of an algorithmic specification into an architecture composed of a data path and a controller. This stream of synthesis generally involves scheduling, resource allocation, generation of the data path and controller synthesis. Experiments showed that optimization started at the high level synthesis improves the performance of the result, yet the current tools do not offer synthesis optimizations that from the RTL level. This justifies the development of an optimization methodology which takes effect from the behavioural specification and accompanying the synthesis process in its various stages. In this paper we propose the use of algebraic properties (commutativity, associativity and distributivity) to transform readable mathematical formulas of algorithmic specifications into mathematical formulas evaluated efficiently. This will effectively reduce the execution time of scheduling calculations and increase the possibilities of testability
Dataset: Stability of hemicarbonate under cement paste-like conditions
No full textData, and scripts (analysis, plots) to go with the publication:
Stability of hemicarbonate under cement paste-like conditions
Fabien Georget (a,1,∗), Barbara Lothenbach (b) , William Wilson (a,c) , Franco Zunino (a) Karen L. Scrivener (a)
a: aboratory of Construction Materials, LMC, EPFL-STI-IMX, Station 12, CH-1015
Lausanne, Switzerland
b: Empa, Concrete & Asphalt Laboratory, Dübendorf, Switzerland
c: Sherbrooke University, Sherbrooke, Quebec, Canada
1: current address: Institute of Building Materials Research, RWTH Aachen, Aachen, Germany
* corresponding author
To be submitted to Cement and Concrete Researc
Author Correction: A molecular timescale for eukaryote evolution with implications for the origin of red algal-derived plastids
No full text
Vagabondage dans Le Mont Damion d’André Dhôtel
No full textThe paper discusses the theme of wandering in the novel by French author André Dhôtel. The protagonist of Le Mont Damion, Fabien Gort, is not a typical vagrant, as he is a member of an intellectual and quite rich family. However, because of his strong absent-mindedness and strangeness, Fabien is unable to find a place in social structures. People’s hostility leads him to many wanderings and unexpected encounters which influence his existence. The novel seems to be also a generic wandering, as it possesses some features of picaresque novel, adventure novel, initiation story and fairytale fantasy
Early-life and chronic exposure to high-fat diet alters noradrenergic and glutamatergic neurotransmission in the male rat amygdala and hippocampus under cognitive challenges
No full textOBEETEEN Consortium: Guillaume Ferreira, Gustavo Pacheco-Lopez, Etienne Coutureau, Ranier Gutierrez, Pascal Barat, Federico Bermudez-Rattoni, Gwenaelle Catheline, Claudia I. Pérez,, Pauline Lafenêtre, Daniel Osorio-Gomez, Kioko Guzman-Ramos, Fabien Naneix, Ernesto Sanz-Arigita, Ioannis Bakoyiannis. Note: Consortium author list recognizes the significant and irreducible commitment with the conceptualization, management, and realization of this research project.Peer reviewe
The geology of the Ste. Justine map-area.
No full textFollowing the discovery of copper-nickel mineralization in 1951 at St. Fabien de Panet, Montmagny County, about 50 miles east of Quebec City, the Quebec Department of Mines initiated a program of geological mapping in this area. In 1952, the author assisted Dr. J. Beland in the mapping of the St. Magloire area where the copper-nickel mineralization was discovered. [...
La régulation sociale des risques de catastrophe
No full textL’étude des risques est aujourd’hui en plein essor. Un regard nouveau est porté sur des problématiques anciennes, notamment celles liées à l’ordre social, au pouvoir, aux inégalités, à la pauvreté, ou encore aux rapports Nord/Sud. Cette évolution est par ailleurs concomitante avec l’augmentation de la vulnérabilité aux aléas et conséquemment des catastrophes, désormais considérée comme un problème de développement au Sud comme au Nord. S’inscrivant dans ce renouveau des études sur les risques et les catastrophes, Fabien Nathan s’est intéressé aux communautés pauvres et indigènes des quartiers périphériques de La Paz. Pourquoi une grande partie de leurs habitants sont-ils exposés aux aléas naturels (glissements de terrain, coulées de boue…) ? Comment ces aléas se transforment-ils en catastrophes (non naturelles) ? Il interroge également la manière dont les habitants vivent avec le risque et construisent leur résilience pour vivre mieux, dans des situations que les observateurs extérieurs pourraient souvent qualifier d’insoutenables ou d’irrationnelles. Pour comprendre ces « faits sociaux totaux » que sont les risques, l’auteur remonte à leurs causes et dévoile le processus de leur construction à travers le temps et l’espace. Son livre ne se limite pas à une ethnographie détaillée de quartiers vulnérables ; il contribue également à repenser les relations mutuelles entre aléas naturels et systèmes sociaux, notamment à travers des concepts tels que la régulation sociale des risques, l’apprivoisement des peurs ou encore les stratégies de perception.Studies on Risk and Vulnerability are increasing at a rapid rate. This field of research sheds new light on old paradigms such as social order, power, inequality and poverty as well as on North-South relations. Its expansion is linked to increased vulnerability to hazards and the subsequent rise in disasters, now considered as development problems in both the North and South. This book forms part of the new stream of risk and disaster studies by focusing on poor indigenous communities in the suburbs of La Paz. It seeks to understand and explain why so many of the local inhabitants are exposed to natural hazards (landslides, mudslides), which sometimes transform into “unnatural” disasters. It also examines how they learn to live with risk, building resilience to live better lives, even in situations that external observers would qualify as unsustainable or irrational. By seeking to understand risks as “total social facts”, the author returns to their origins, revealing the way in which they have formed over time and place. The book does not restrict itself to a detailed ethnography of vulnerable neighborhoods. It also contributes to rethinking the mutual relationship between natural hazards and social systems. Concepts such as social regulation of risks, taming of fear, perception strategy as well as many more are explored
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