HAL Portal AU (University of Avignon)
Not a member yet
35713 research outputs found
Sort by
Updating “processing and consolidation of open data on public procurement in France (2015–2023)” with daily refresh
No full textInternational audiencePublic procurement transparency is a major policy concern worldwide. It is expected to improve the evaluation of procurement regulations, prevent corruption, and foster competition, given the significant weight of public contracts in government spending. For instance, in 2023 the European Union implemented the eForms standard to harmonize procurement notices across its member states. This article presents an updated version of a previous dataset that collected and enriched open data on French public procurement, which could no longer be maintained after the adoption of eForms . The new version not only updates the data from 2024 onward but also introduces two major improvements. First, it is automatically refreshed on a daily basis. Second, it relies on a faster and more reliable method for identifying the public and private actors involved in procurement. This article therefore provides a methodology for a continuous and accurate centralization and enhancement of procurement notices. The resulting dataset is intended to benefit researchers, policymakers, businesses, and public buyers alike.</div
Vaisselles de table et poteries culinaires d'un quartier de l'Isle-sur-la-Sorgue (XIIe s.-XIXe s.)
No full textInternational audienc
Pre-Editorial Normalization for Automatically Transcribed Medieval Manuscripts in Old French and Latin
No full textRecent advances in Automatic Text Recognition (ATR) have improved access to historical archives, yet a methodological divide persists between palaeographic transcriptions and normalized digital editions. While ATR models trained on more palaeographically-oriented datasets such as CATMuS have shown greater generalizability, their raw outputs remain poorly compatible with most readers and downstream NLP tools, thus creating a usability gap. On the other hand, ATR models trained to produce normalized outputs have been shown to struggle to adapt to new domains and tend to over-normalize and hallucinate. We introduce the task of Pre-Editorial Normalization (PEN), which consists in normalizing graphemic ATR output according to editorial conventions, which has the advantage of keeping an intermediate step with palaeographic fidelity while providing a normalized version for practical usability. We present a new dataset derived from the CoMMA corpus and aligned with digitized Old French and Latin editions using passim. We also produce a manually corrected gold-standard evaluation set. We benchmark this resource using ByT5-based sequence-to-sequence models on normalization and pre-annotation tasks. Our contributions include the formal definition of PEN, a 4.66M-sample silver training corpus, a 1.8k-sample gold evaluation set, and a normalization model achieving a 6.7% CER, substantially outperforming previous models for this task
Aluminium accumulation in loengo (Anisophyllea boehmii Engl.), a fruit from the Miombo ecoregion consumed in Angola
No full textInternational audienceThe fruit of Anisophyllea boehmii, known as loengo in Angola, is a wild fruit typically harvested in the Miombo forest. It is widely consumed locally and appreciated for its organoleptic qualities. It also has proven nutritional interests. However, analysis of the mineral profile of the fruit pulp using inductively coupled plasma with mass spectrometry (ICP-MS) on 7 samples collected in 3 geographical areas over 3 consecutive years revealed an uncommon aluminium content of around 8 g‧kg-1 of dry matter. Indeed, the concentrations measured in the leaves confirmed that the plant is an aluminium hyperaccumulator. No correlation was found between the aluminium content of the pulp and that in soil. This particularly high value led to the recommendation to limit consumption of the fruit to protect local populations from excessive and repeated exposure to aluminium
Madelena Gonzalez, Helen Landau, Au-delà de la barrière de la langue. Trois conversations sur le théâtre multilingue et en langue minoritaire
No full textInternational audienc
Promoting oak (Quercus pubescens Willd.) seedling development: finding the balance between canopy opening and grass competition under water stress
No full textTo adapt Mediterranean forests to increasingly harsh climatic conditions by promoting genetic diversity, thinning is often considered an effective strategy to enhance sexual regeneration. However, determining an optimal thinning level that both increases light availability and maintains favorable microclimatic conditions for germination, without excessively promoting herbaceous competition, remains challenging. To better understand how abiotic and biotic factors influence oak seedling development and to help identify a balanced thinning level under climate change, we conducted a semi-controlled experiment testing the combined effects of competition with a grass species (Poaceae), two canopy opening levels, and water stress. Our results highlight the crucial role of competition with Poaceae species - in our case Festuca ovina - in oak regeneration. Their presence not only intensifies competition for essential resources, but also modifies soil properties and alters belowground interactions, overall creating conditions less favorable for oak seedling establishment. In addition, our results highlight the significant impact of key abiotic factors that are canopy opening (which influences light availability) and hydric conditions, as well as their interactions with the effects of competition. We observed a consistent need for adequate light to ensure optimal seedling performance, suggesting that successful regeneration depends on balancing sufficient canopy opening to improve light availability with maintaining sufficient cover to mitigate water stress and limit grass competition. Overall, our study contributes to the broader debate on sustainable forest management strategies under changing climatic conditions
DORIS - Les dépôts de boues rouges du bassin minier de Provence : caractérisation et impacts sur la qualité physico-chimique et biologique des sols
No full textLe bassin minier de Provence, et plus globalement la métropole d’Aix-Marseille, est un territoire localement impacté par des dépôts terrestres de résidus d’extraction de la bauxite, plus communément appelés « Boues Rouges ». De fait du procédé industriel mis en oeuvre pour extraire l’alumine de la bauxite, les résidus générés sont caractérisés par un pH, une salinité et des teneurs en certains métaux élevés. Ainsi, ces dépôts font actuellement l’objet de nombreux questionnements de la part de la société civile et de la communauté scientifique concernant leurs impacts sur la santé humaine et environnementale. Concernant cette dernière, les études sur les effets environnementaux des boues rouges sur les pédosystèmes et leurs composantes biologiques (végétales, microbiennes et animales) sont encore peu nombreuses dans la littérature. C’est pourquoi, ce projet vise à étudier les dépôts terrestres de boues rouges en termes d’impacts sur la qualité physico-chimique et biologique des sols. L’objectif général de ce projet vise à tester l’innocuité, ou non, de l’apport de différents types de résidus (boues brutes ou modifiées) aux sols sur les fonctions qui s’y expriment et de préconiser des mesures de gestion adaptées aux caractéristiques de ces dépôts
How do forest structure and composition near trees with black woodpecker (Dryocopus martius L.) cavities differ from the surrounding forest? A multisite approach in French forests
No full textInternational audienceAbstract Key message In French temperate lowland and mountain forests, the black woodpecker ( Dryocopus martius L.) excavates preferably trees in beech-dominated sites, with a lower fraction of small-diameter trees than in the surrounding areas, while the presence of deadwood in the immediate vicinity does not matter. Context The black woodpecker ( Dryocopus martius L. 1758) is the largest primary tree cavity excavator in Europe providing nest sites for numerous secondary cavity users. It is seen both as an ecosystem engineer and as a keystone species, providing nesting and roosting habitat for many species and having a positive role for forest biodiversity. As such, this bird has an important conservation role, and its cavities are conserved by foresters in their management. However, the characteristics of its habitat have seldom been quantified from a forestry point of view. Aim By analysing the characteristics of a wide range of temperate forest stands (uneven-aged and even-aged, mountain and lowland), we sought to highlight differences between plots containing or not black woodpecker cavities. Methods We characterised the stand structure (tree diameter, density, composition), the abundance of the understorey (density of saplings) and the midstorey (density of small trees), and the volume of deadwood (standing and lying), and compared the results obtained in plots with black woodpecker cavities ( n = 40) with those obtained in paired control plots without cavities ( n = 40). Results We found a higher proportion of beech ( Fagus sylvatica L.) and a smaller proportion of small-diameter trees in the plots with cavity-trees. Apart from the cavity-tree, we failed to highlight a difference in large-diameter trees. The amount of deadwood and the number of saplings were not decisive. Conclusion To favour the black woodpecker, forest management methods must maintain a sufficient number of large trees for cavity excavation, as well as a relatively open midstorey layer
