Search results for "Dean"
showing 10 items of 278 documents
Multi axis representation and Euclidean distance of muscle fatigue indexes during evoked contractions
2014
International audience; In this article, we proposed a new representation of muscular fatigue during evoked muscle contractions based on fatigue indexes such as peak to peak amplitude, RMS of the M wave, mean and median frequency and fatigue index calculated from continuous wavelet transform (I CWT). These new representations of muscle fatigue using multi axis represented and Euclidean distance give better insights on changes in physiological characteristics during muscle fatigue. This technique provides a fatigue index using several muscle characteristics. The use of other kinds of fatigue characteristics as force could also be possible.
A practical MRI-based reconstruction method for a new endocavitary and interstitial gynaecological template
2015
Purpose: There are perineal templates for interstitial implants such as MUPIT and Syed applicators. Their limitations are the intracavitary component deficit and the necessity to use computed tomography (CT) for treatment planning since both applicators are non-magnetic resonance imaging (MRI) compatibles. To overcome these problems, a new template named Template Benidorm (TB) has been recently developed. Titanium needles are usually reconstructed based on their own artifacts, mainly in T1-weighted sequence, using the void on the tip as the needle tip position. Nevertheless, patient tissues surrounding the needles present heterogeneities that complicate the accurate identification of these …
Differential of metric valued Sobolev maps
2020
We introduce a notion of differential of a Sobolev map between metric spaces. The differential is given in the framework of tangent and cotangent modules of metric measure spaces, developed by the first author. We prove that our notion is consistent with Kirchheim's metric differential when the source is a Euclidean space, and with the abstract differential provided by the first author when the target is $\mathbb{R}$.
Uniformization of two-dimensional metric surfaces
2014
We establish uniformization results for metric spaces that are homeomorphic to the Euclidean plane or sphere and have locally finite Hausdorff 2-measure. Applying the geometric definition of quasiconformality, we give a necessary and sufficient condition for such spaces to be QC equivalent to the Euclidean plane, disk, or sphere. Moreover, we show that if such a QC parametrization exists, then the dilatation can be bounded by 2. As an application, we show that the Euclidean upper bound for measures of balls is a sufficient condition for the existence of a 2-QC parametrization. This result gives a new approach to the Bonk-Kleiner theorem on parametrizations of Ahlfors 2-regular spheres by qu…
On the CAT(0) dimension of 2-dimensional Bestvina-Brady groups
2002
Let K be a 2-dimensional finite flag complex. We study the CAT(0) dimension of the `Bestvina-Brady group', or `Artin kernel', Gamma_K. We show that Gamma_K has CAT(0) dimension 3 unless K admits a piecewise Euclidean metric of non-positive curvature. We give an example to show that this implication cannot be reversed. Different choices of K lead to examples where the CAT(0) dimension is 3, and either (i) the geometric dimension is 2, or (ii) the cohomological dimension is 2 and the geometric dimension is not known.
Stationary sets of the mean curvature flow with a forcing term
2020
We consider the flat flow approach for the mean curvature equation with forcing in an Euclidean space $\mathbb R^n$ of dimension at least 2. Our main results states that tangential balls in $\mathbb R^n$ under any flat flow with a bounded forcing term will experience fattening, which generalizes the result by Fusco, Julin and Morini from the planar case to higher dimensions. Then, as in the planar case, we are able to characterize stationary sets in $\mathbb R^n$ for a constant forcing term as finite unions of equisized balls with mutually positive distance.
Le costituzioni partecipate nell’area andina: esperienze costituenti a confronto in vista dell’elezione dell’Assemblea costituente cilena
2021
Il presente contributo trae spunto dal vivace dibattito sul processo costituzionale attualmente in corso in Cile che manifesta già alcuni elementi procedurali precedentemente sperimentati in altri ordinamenti geograficamente e culturalmente affini, quali la Colombia, l’Ecuador e la Bolivia. Le esperienze scelte, oggetto di analisi, sono considerate come pioniere di un nuovo modello di processo costituente, affermatosi nell’area andina, nel quale la partecipazione popolare permea l’intera procedura di elaborazione della nuova norma fondamentale. L’analisi del carattere partecipativo dei processi costituenti analizzati si intreccia con un ulteriore profilo di indagine, inerente agli effetti c…
Dean Acheson, un architecte de la guerre froide
2011
International audience; Présentation de Dean Acheson, homme politique américain : sa formation, sa position à l'entrée en guerre des Etats-Unis en 1941, son rôle aux côtés de Harry Truman dès 1945 dans la politique américaine, ses responsabiltés mondiales et son rôle dans la diplomatie américaine.
Le regole del caso. Modelli di razionalità
1996
L'autrice si cimenta in una riflessione argomentativa che trova i suoi capisaldi nel pensiero di M. Weber e J, Habermas nella individuazione di due elementi fondativi della definizione di razionalità: razionalità plurima ed idealtipica, quella della Verstehende Soziologie di Weber, razionalità procedurale, quella del Kommunicatives Handeln di Habermas. Sullo sfondo la dialettica caso/regole del sapere,