Scientific Publications of the University of Toulouse II Le Mirail
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Vivre dans les zones rurales et urbaines de Nouvelle-Calédonie : impact sur la consommation alimentaire, la durée du sommeil et les paramètres anthropométriques chez les adolescents mélanésiens
No full textInfographie résumant l'article scientifique suivant :Galy O., Paufique E., Nedjar-Guerre A., Wacalie F., Wattelez G., Le Roux P.-Y., Ponidja S., Zongo P., Serra-Mallol C., Allman-Farinelli M., Frayon S. Living in Rural and Urban Areas of New Caledonia: Impact on Food Consumption, Sleep Duration and Anthropometric Parameters Among Melanesian Adolescents. Nutrients. 2020; 12(7):2047. doi: 10.3390/nu12072047Infography related to the following scientific paper: Galy O., Paufique E., Nedjar-Guerre A., Wacalie F., Wattelez G., Le Roux P.-Y., Ponidja S., Zongo P., Serra-Mallol C., Allman-Farinelli M., Frayon S. Living in Rural and Urban Areas of New Caledonia: Impact on Food Consumption, Sleep Duration and Anthropometric Parameters Among Melanesian Adolescents. Nutrients. 2020; 12(7):2047. doi: 10.3390/nu12072047Infographie résumant l'article scientifique suivant :Galy O., Paufique E., Nedjar-Guerre A., Wacalie F., Wattelez G., Le Roux P.-Y., Ponidja S., Zongo P., Serra-Mallol C., Allman-Farinelli M., Frayon S. Living in Rural and Urban Areas of New Caledonia: Impact on Food Consumption, Sleep Duration and Anthropometric Parameters Among Melanesian Adolescents. Nutrients. 2020; 12(7):2047. doi: 10.3390/nu1207204
Etude d'un nouveau schéma IMEX Volumes Finis bas Mach d'ordre 2 et peu oscillant pour les équations d'Euler complet
No full textInternational audienceIn this work, we propose and study an Implicit-Explicit (IMEX) finite volume scheme for the compressible Euler system which preserves the low Mach number limit. IMEX schemes are based on a flux splitting into a part treated explicitly and a part treated implicitly. We choose the flux splitting introduced by E. Toro and M.E. Vázquez-Cendón for ensuring the recognition of contact discontinuities and shear waves. Then, based on this flux splitting, we propose first and second order new linear asymptotic preserving (AP) schemes in the low Mach number limit. We prove that the schemes are asymptotically consistent, that is they degenerate into a consistent discretization of the incompressible system when the Mach number is sufficiently small. We perform a Fourier stability analysis on the linearized system around a constant state showing that the first order scheme is L 2 stable under a CFL condition independent of the Mach number. This proves the asymptotic stability in the linear case. We show one-dimensional and two-dimensional results which prove the good behavior of our scheme in all-Mach number regimes. Furthermore, we construct a low-diffusive TVD first-order scheme by interpolating the first-order in time scheme with a second-order one.Dans cet article, nous proposons et étudions un schéma de volumes finis implicite-explicite (IMEX) pour le système d'Euler compressible qui préserve la limite bas Mach. Les schémas IMEX sont basés sur une division du flux en une partie traitée explicitement et une partie traitée implicitement. Nous choisissons la décomposition de flux introduite par E. Toro et M.E. Vázquez-Cendón pour assurer la préservation des discontinuités de contact et des ondes de cisaillement. Ensuite, sur la base de cette décomposition de flux, nous proposons de nouveaux schémas linéaires du premier et du second ordre asymptotiquement préservants (AP) dans la limite des faibles nombres de Mach. Nous prouvons que les schémas sont asymptotiquement coonsistants, c'est-à-dire qu'ils dégénèrent en une discrétisation consistante du système incompressible lorsque le nombre de Mach est suffisamment petit. Nous effectuons une analyse de stabilité de Fourier sur le système linéarisé autour d'un état constant, montrant que le schéma du premier ordre est L 2 stable sous une condition CFL indépendante du nombre de Mach. Cela prouve la stabilité asymptotique dans le cas linéaire. Nous montrons des résultats unidimensionnels et bidimensionnels qui prouvent le bon comportement de notre schéma dans tous les régimes du nombre de Mach. Par ailleurs, nous construisons un schéma TVD du premier ordre faiblement diffusif en interpolant le schéma du premier ordre en temps avec un schéma du second ordre
Factors behind poor cognitive outcome following a thalamic stroke
No full textInternational audienceBackground Thalamic strokes produce neurological, cognitive, and behavioral symptoms depending on the thalamic nuclei involved. While traditionally associated with severe cognitive deficits, recent studies suggest more modest impairments. This study aims to identify the factors that influence the severity of cognitive impairment following thalamic stroke. Methods We recruited 40 patients (mean age 51.1) with chronic isolated thalamic stroke and 45 healthy subjects (mean age 48.5) who underwent neuroimaging and neuropsychological assessment. Cluster and principal component analyses were used to discriminate patients from healthy subjects based on cognitive tasks. Disconnectome maps and cortical thickness were analyzed to understand the distant impact of thalamic strokes. Results Two cognitive profiles emerged from the cluster analysis. Cluster 1 included mostly healthy subjects ( n = 43) and patients with no or minor deficits ( n = 20). Cluster 2 included patients ( n = 19) and two healthy subjects with severe deficits in verbal memory, executive functions, and attention. Cluster 1 encompassed all patients with right thalamic stroke, while Cluster 2 included all patients with bilateral stroke or mammillothalamic tract interruption. Patients with left-sided stroke were equally divided between clusters. Significant differences between clusters included age, education, interthalamic adhesion disruption, lesion volume, and location. Patients with left-sided stroke in Cluster 2 had more lateral thalamic lesions and greater disruption of the anterior thalamic projection. Conclusions Contrary to common expectations, our findings suggest that many patients with thalamic stroke have relatively good cognitive outcomes. In contrast, we identified the factors behind poor outcomes that will help clinicians
Trajectories of posttraumatic growth identified from person-centered analyses: A systematic review
No full textInternational audienceStruggling with a highly stressful or traumatic event can lead to the development of posttraumatic growth (PTG); yet this construct lacks a theoretical consensus. The Janus-Face model incorporates two forms of perceived PTG, constructive and illusory. To examine clinical heterogeneity in PTG, this systematic review aims to identify measurement of illusory PTG, growth trajectories from person-centered analyses, variations by event type, and transitions over time. A search for studies published between 1996 and 2023 was carried out using four databases (PsycARTICLES, PsycINFO, PubMed, ScienceDirect) following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Of the eighteen studies included, eight considered real and illusory PTG, evaluating them indirectly through various measures: PTG, coping, functioning, or distress. Fifteen studies conducted with adults and three with children named PTG trajectories according to the evolution of the level of growth (stable, increasing, decreasing PTG) or according to characteristics such as PTG levels, distress, coping, resources (constructive, illusory, distressed, struggling, resistant PTG). Trajectory inclusion of high or increasing PTG is determined by factors such as sociodemographic variables, perceived distress, active coping, or social support. Trajectories varied by event type and sample, with chronically ill patients showing complex patterns while earthquake-surviving children mostly high PTG. Additionally, trajectory transitions were observed less than two years post-event. The results suggest that perceived growth can take multiple forms that evolve over time. Developing this type of study by integrating different events and additional processes would improve understanding of perceived PTG and provide insight for adaptive interventions
Multiple objective linear programming over the probability simplex
No full textThis paper considers the problem of maximizing multiple linear functions over the probability simplex. A classification of feasible points is indicated. A necessary and sufficient condition for a member of each class to be an efficient solution is stated. This characterization yields a computational procedure for ascertaining whether a feasible point is efficient. The procedure does not require that candidates for efficiency be extreme points. An illustration of the procedure is offered
Sharp Invertibility in Quotient Algebras of
No full textWe consider inner functions with the zero set such that the quotient algebra satisfies the Strong Invertibility Property (SIP), that is for every \varepsilon>0 there exists \delta>0 such that the conditions , , imply that is invertible in and . We prove that the SIP is equivalent to the maximal asymptotic growth of away from its zero set. We also describe inner functions satisfying the SIP in terms of the narrowness of their sublevel sets and relate the SIP to the Weak Embedding Property introduced by P.Gorkin, R.Mortini, and N.Nikolski as well as to inner functions whose Frostman shifts are Carleson--Newman Blaschke products. We finally study divisors of inner functions satisfying the SIP. We describe geometrically the zero set of inner functions such that all its divisors satisfy the SIP. We also prove that a closed subset of the unit circle is of finite entropy if and only if any singular inner function associated to a singular measure supported on is a divisor of an inner function satisfying the SIP
On the algebraicity of germs of meromorphic functions
No full textIn this article we prove that every germ of analytic meromorphic function at (C 2 , 0) is equivalent, under the right composition by a germ of biholomorphism, to a germ of algebraic meromorphic function. An analogous result is also true for real analytic meromorphic functions.</div
The Republic of Ireland and the Palestine Question
No full texthttps://www.palquest.org/en/highlight/38343/republic-ireland-and-palestine-questio
Sous-le-Roc (Saint-Léon-sur-Vézère, Dordogne) : un site aurignacien de la vallée de la Vézère. Bilan des recherches
No full textInternational audienceSous-le-Roc (Saint-Léon-sur-Vézère, Dordogne), a collapsed rockshelter site, has been known since A. Reverdit undertook the first excavations there at the end of the 19th century. A few decades later, D. Peyrony carried out new, limited, excavations which revealed evidence of Aurignacian and Gravettian components to the site. The publication of Peyrony’s work was not very detailed and left many unanswered questions concerning the nature of occupation at the site. In an effort to answer some of these questions, and assess the remaining archaeological potential of the site, excavations were conducted at Sous-le-Roc in 2016 under the direction of R. White. This article aims to summarize the field operations at the site and the study of the associated archaeological collections.In anticipation of the 2016 field campaign, re-examination of the collection from D. Peyrony’s excavation allowed us to more precisely attribute elements of the assemblage to the Early Aurignacian and the Gravettian. Furthermore, the state of conservation of the material and the composition of the assemblage also led us to believe that Peyrony excavated in situ deposits, possibly partially mixed, but at least partly preserved by the collapse of the rockshelter ceiling. One of the goals of the 2016 field operation was to locate this area excavated by Peyrony but, due to the lack of precise indications left by Peyrony, and despite our efforts in the field, we were unable to identify its exact location. Two of the more promising candidates were areas designated zone I and zone IV/V during the 2016 field work. According to his description of the site, Peyrony’s excavations took place on the right side, in front of a large rock fall at the foot of the rockface. A huge pile of blocks (zone IV/V) constituted the largest accumulation of blocks along the two-hundred-meter rockface thus, based on his description, it seemed likely that Peyrony’s excavations took place in this area. However, the composition of the material present in the Peyrony collection and that of the material from our excavations in zone IV/IV are clearly different.At the outset of the recent field operations, we also identified an old excavation trench associated with a pile of backdirt in the northern part of the site. Testing carried out in this area (zone I) yielded material attributable to the Aurignacian (though it was not possible to assign it to a specific phase of the Aurignacian) and the Gravettian, making its composition consistent with Peyrony’s collection. However, a large portion of the lithic and faunal material exhibits a taphonomic state which suggests that it represents a secondary deposition, likely colluvium originating from the plateau, rather than in situ deposits. Therefore, zone I does not appear to be the location of Peyrony’s excavation either.As such, given our current state of knowledge, we cannot pinpoint the precise location of D. Peyrony’s excavations at Sous-le-Roc, despite the fact that the existing evidence suggests he excavated deposits in primary position. Furthermore, although zone IV/V is the area with the most significant accumulation of blocks, smaller accumulations exist at a number of areas along the rockface, not all of which were tested during the 2016 campaign. It is thus probable that D. Peyrony excavated in an area that was not investigated in 2016.During the 2016 field operation four areas, located across just over one hundred meters along the base of the rockface, were tested. Two areas (zones I and II) yielded relatively rich Paleolithic deposits containing diagnostic artifacts, but with taphonomic alterations which suggest they may have originated from the plateau above. A third area (zone III) yielded only historical material. Ultimately, only the fourth area (zone IV/V) yielded rich Paleolithic deposits which could be associated with in situ occupations. Although the zone IV/V deposits tested in 2016 were accumulated by badger activity, it was determined that the badger(s) had burrowed through the intact archaeological layers of the site which are intercalated between bedrock and the blocks of the collapsed rock shelter ceiling. Notably, within these deposits were wall fragments, detached through gelifraction, bearing red pigmentation. This suggests that the surfaces of the rockshelter were at least partially decorated.Study of the archaeological material from zone IV/V revealed three chronocultural components spanning the entire Aurignacian period: Protoaurignacian, Recent Aurignacian and Final Aurignacian. Though mainly attributed to the more recent end of the Aurignacian technocomplex, given the low percentage of diagnostic pieces, it would be very risky to estimate the relative proportion of these chronocultural components within the assemblage as a whole.The disturbed nature of many of the deposits tested, combined with issues of safety and access around areas of rock fall, meant that our observations in the field do not allow a clear understanding of site formation processes and the conditions under which the deposits accumulated. In fact, the only observable in-place stratigraphic profile, located directly in line with the outermost collapsed blocks, is very limited spatially with only one archaeological layer evident. This layer is about ten centimeters thick, red in color and, unfortunately, truncated by badger tunneling. Archaeological remains within this layer are sparse and undiagnostic. The space between the bedrock and collapsed ceiling blocks is relatively limited (about thirty centimeters), which leaves little room for well-developed stratification comprising several archaeological layers corresponding to the three chronocultural components identified within the assemblage. Of course, these observations could only be made on a small, very localized window, which does not necessarily reflect the stratigraphy of the entire site.Whatever the conditions of deposition and evolution of the sediments preserved under the collapsed rockshelter ceiling of zone IV/V of Sous-le-Roc, the assemblage differs markedly from what is generally observed of the Aurignacian in the Vézère Valley, in both the absence of occupation during the Early Aurignacian, and in the presence of occupations during the Protoaurignacian and Final Aurignacian. Despite the damage inflicted on the archaeological deposits by badger activity, it is likely that certain parts of the site, located under the collapsed blocks, are still well-preserved. Sous-le-Roc thus potentially constitutes an important archaeological resource for elucidating these poorly known phases of the Aurignacian in the Vézère Valley: The Proto- and Final Aurignacian.Le site de Sous-le-Roc (Saint-Léon-sur-Vézère, Dordogne) est connu depuis la fin du XIXème siècle, période à laquelle A. Reverdit y entreprend les premières fouilles. Quelques dizaines d’années plus tard, D. Peyrony y effectue de nouvelles recherches, limitées, qui lui permettent de mettre au jour un ensemble associant des éléments aurignaciens et gravettiens. La publication de ces travaux est cependant très succincte et laissait de nombreuses questions en suspens concernant les modalités d’occupation du site. Des opérations de sondage sont donc entreprises en 2016 sous la direction de R. White pour tenter d’en apprendre davantage et d’évaluer le potentiel archéologique du site.Cet article propose de faire le bilan des opérations de terrain conduites sur le site et de l’étude des collections archéologiques associées. S’agissant des fouilles conduites par D. Peyrony, le réexamen de la collection a montré qu’elle associait des pièces pouvant être attribuées à l’Aurignacien ancien et au Gravettien lato sensu. Faute d’indications précises et en dépit de nos recherches sur le terrain, il ne nous a pas été possible de localiser précisément le secteur fouillé. L’état de conservation du matériel et sa composition nous incitent toutefois à penser que D. Peyrony a fouillé des niveaux in situ, éventuellement mélangés, mais préservés en partie par l’éboulisation.Les opérations menées en 2016 ont, quant à elles, permis d’identifier un abri-sous-roche effondré aux parois anciennement peintes et dont le remplissage, ayant livré un riche matériel archéologique, documente trois phases du techno-complexe aurignacien : le Protoaurignacien, l’Aurignacien récent classique et l’Aurignacien final. Bien que les sédiments aient été fortement affectés par l’activité des blaireaux, le matériel recueilli positionne le site comme un jalon important de l’Aurignacien dans la vallée de la Vézère par la présence de deux phases très rarement documentée dans ce secteur : le Protoaurignacien et l’Aurignacien final
ComplOps Research: Navigating the Digital Regulation Revolution
No full textWith the European Union leading a regulatory transformation through laws like the General Data Protection Regulation (GDPR), the Artificial Intelligence Act (AI Act), the Digital Services Act (DSA), and the Cyber Resilience Act (CRA), organizations face unprecedented compliance challenges. In this context, the nascent field of Compliance Operations (ComplOps) is critical for aligning technological systems with ever-evolving regulatory demands. This paper explores how ComplOps can bridge the gap between technological innovation and regulatory requirements, ensuring that compliance is seamlessly embedded into operational workflows. A case study from recent research demonstrates how compliance can be operationalized in AI systems.</div