Results 81 to 90 of about 337,809 (233)

Mixed Super‐Circles

open access: yesComputer Graphics Forum, EarlyView.
Abstract We introduce mixed super‐circles, a position‐curvature formulation of the original dynamic 2D super‐helix model. Compared to the latter, purely curvature‐based model – the so‐called chained formulation –, the mixed formulation that we propose here drastically reduces the algorithmic complexity of the solving scheme – from quadratic to quasi ...
Emile Hohnadel   +2 more
wiley   +1 more source

Exit dynamics from organic certification in Quebec

open access: yesCanadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, EarlyView.
Abstract In Quebec, organic‐certification exits remained persistently high at 5% –7% annually over 2021–2025, while entries fell sharply from 10.8% to 3.4%. By 2025, exits exceeded entries for the first time, contracting the certified stock and reversing a decade of expansion.
Komla Avoumatsodo, Moustapha Thiam
wiley   +1 more source

Dynamique des berges du Logone entre la retenue de Maga et le lac Tchad et ses implications socio-économiques [PDF]

open access: yes, 2017
À l’interface entre écosystèmes aquatiques et terrestres, les berges des cours d’eau fournissent des services écologiques et socio-économiques qui peuvent être altérés par les phénomènes d’érosion.
KANA, Collins Étienne
core  

The many prices of war and occupation: Black markets and the cost‐of‐living index in France, 1938–1949

open access: yesThe Economic History Review, EarlyView.
Abstract When studying French prices between 1938 and 1949, economists and historians face a paradox: whilst a vast black market shaped daily life, official indices recorded only state‐controlled prices. This article addresses the issue by introducing a new consumer price index that incorporates both official and black market prices.
Patrice Baubeau, Matéo Teixeira
wiley   +1 more source

Programmation dynamique

open access: yes, 2022
MasterLe but de ce cours est d'introduire le principe de programmation dynamique pour les problèmes de consommation et investissement optimales. Plus précisément dans ce cours on étudie le problème de consommation optimale en temps discret.
Pergamenchtchikov, Serguei
core  

Ceramic ecology in an Islamic capital: changes in the production and consumption of pottery in Palermo

open access: yesEarly Medieval Europe, EarlyView.
Palermo became the new capital of Sicily after the Aghlabid conquest in 831. The transformation of the city into a capital took many forms, including the production and consumption of pottery. The perspective from ceramic evidence shows that Palermo underwent faster and deeper processes of Islamization than other urban and rural contexts across the ...
Viva Sacco
wiley   +1 more source

The demography of an Osprey population under natural recolonisation and translocation processes

open access: yesIbis, EarlyView.
In a context of global biodiversity loss, studying the processes underlying the recolonisation—whether natural or assisted—of expanding species provides essential insights for the development of effective conservation strategies. Since the 1980s, the Osprey Pandion haliaetus has naturally recolonized mainland central and eastern France, increasing from
Marie Thalhammer   +6 more
wiley   +1 more source

Model and Stability Analysis of a Flexible Bladed Rotor

open access: yesInternational Journal of Rotating Machinery, 2006
This paper presents a fully bladed flexible rotor and outlines the associated stability analysis. From an energetic approach based on the complete energies and potentials for Euler-Bernoulli beams, a system of equations is derived, in the rotational ...
N. Lesaffre, J.-J. Sinou, F. Thouverez
doaj   +1 more source

Du co-développement à la co-innovation - Analyse empirique des coopérations verticales en conception innovante [PDF]

open access: yes
Le secteur automobile est soumis depuis des décennies à deux tendances continues et a priori contradictoires : d'une part un mouvement de spécialisation / concentration qui tend à désintégrer la filière ; d'autre part une compétition par l'innovation où ...
Romain Beaume   +2 more
core  

A novel all‐in‐one dynamic wrinkle evaluation system: Development, validation and application in cosmetic industries

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Photo grading of dynamic lines in the dynamic line repeatability validation study. Abstract Objective This study aimed to develop and validate a novel, integrated dynamic wrinkle assessment system based on standardized, real‐time and multi‐angle facial images and video recordings, and to explore its potential application in evaluating the anti‐wrinkle ...
Xingzuo Liu   +6 more
wiley   +1 more source

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