Publications scientifiques de l'Université de Reims Champagne-Ardenne
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Examining the conditional effects of supervisors’ availability expectations after work hours: the moderating role of longitudinal need-related supervisory behaviour profiles
No full textInternational audienceThis study investigated how the effects of employees' perceptions of supervisors' availability expectations on their behaviors are moderated by need-related supervisory behavior profiles. To that end, we relied on a person-centered approach to examine how employees' perceptions of their supervisors' need-supportive, need-thwarting, and needindifferent behaviors combine within distinct profiles, as well as the nature, stability, and outcomes of these profiles. A sample of 598 employees was surveyed twice over a three-month interval. Our results revealed five need-related supervisory behavior profiles: (1) Globally Moderate and Specifically Thwarting, (2) Globally Moderate and Specifically Indifferent, (3) Globally Favorable and Specifically Supportive, (4) Globally Unfavorable, and (5) Globally Favorable and Specifically Indifferent. These profiles displayed a very high level of within-sample and within-person stability over time. Levels of turnover intention, soldiering, and counterproductive work behaviors differed across profiles, with the highest levels of turnover intention found in the Globally Unfavorable profile while the highest levels of soldiering and counterproductive work behaviors were found in the Globally Moderate and Specifically Indifferent profile. Finally, supervisors' availability expectations were positively associated with counterproductive work behaviors in the Globally Unfavorable, Globally Moderate and Specifically Thwarting, and Globally Favorable and Specifically Indifferent profiles, with soldiering in the Globally Favorable and Specifically Indifferent profile, and with turnover intention in the Globally Moderate and Specifically Indifferent profile
Fonctionnement naturel et enjeux écosystémiques du marais de Germont-Buzancy
No full textInternational audienc
Diagnostic et pronostic des maladies parodontales assisté par des logiciels d’apprentissage automatique : revue systématique
No full textCette thèse explore l’apport de l’intelligence artificielle dans le diagnostic et le pronostic des maladies parodontales à travers une revue systématique de la littérature. Elle analyse les performances des principaux modèles d’apprentissage automatique appliqués aux données cliniques, radiographiques et biologiques. Les résultats montrent une amélioration globale de la précision diagnostique et de la prédiction de l’évolution des maladies parodontales. Cependant, une hétérogénéité méthodologique et des biais limitent encore la transposabilité clinique de ces outils. L’intelligence artificielle apparaît ainsi comme une aide prometteuse à la décision clinique, nécessitant des validations supplémentaires avant une intégration en pratique quotidienne
Contrôle des corps menstrués des gymnastes françaises en gymnastique rythmique depuis les années 1970
No full textInternational audienceThe issue of menstruation in Rhythmic Gymnastics (RG) has not been the subject of any scientific study. This article focuses on how French high-level (HL) gymnasts in RG, since the 1970s, experience their menstruation and how this can impact their athletic careers. The aim is to explore the bodily experiences of these HL gymnasts from the 1970s to the present day to document the cultural history of representations of female bodies and intimacy.The Foucauldian approach, combined with those of feminist socio-phenomenological theories, questions how the experience of menstruation can be a source of oppression for these gymnasts due to the shame associated with monthly bleeding and the daily challenges they face. Two main findings emerge: the injunction to shape a slim and slender appearance is entangled with menstruation; Intensive training represents a form of control over the menstruating body. If menstruation disrupts the self-established order, particularly due to the bodily changes associated with it, the incorporation of pain during the career also seems to shape a resistance to menstrual pain.La question des menstruations en Gymnastique Rythmique (GR) ne fait l’objet d’aucune étude scientifique. Cet article s’intéresse à la manière dont des gymnastes de Haut-Niveau (HN) françaises en GR, depuis les années 1970, vivent leurs menstruations et comment ces dernières peuvent impacter leur carrière sportive. Il s’agit ainsi d’explorer les expériences corporelles de ces gymnastes de HN des années 70 à nos jours pour documenter l’histoire culturelle des représentations des corps féminins et de l’intime.L’approche foucaldienne croisée à celles des théories féministes socio-phénoménologiques questionnent la manière dont l’expérience des menstruations peut être une source d’oppression pour ces gymnastes en raison de la honte associée aux saignements mensuels et des défis du quotidien auxquels elles sont confrontées. Deux principaux résultats apparaissent : l’injonction à façonner une apparence fine et élancée est enchevêtrée aux menstruations ; l’entrainement intensif représente une forme de contrôle du corps menstrué. Si les menstruations troublent l’ordre auto établi notamment en raison des modifications corporelles qui y sont associées, l’incorporation de la douleur au cours de la carrière semble également façonner une résistance à la douleur menstruelle
Recherche et formations spécifiques visant à améliorer la santé du travaillant en santé
No full textNational audienceNo abstract availabl
Opening or foreclosing futures? A longitudinal analysis of European bioeconomy foresight (SCAR, 2007–2020)
No full textForesight exercises are often presented as tools for opening the imagination. This article asks how institutional bioeconomy foresight simultaneously broadens the discursive horizon and narrows the futures it claims to explore. Analysing the complete series of Standing Committee on Agricultural Research (SCAR) foresight reports (2007–2020), the study develops a capture–flight lens, adapted from Deleuzo–Guattarian process philosophy, to trace closure, openings, and silences across thirteen years of European bioeconomy foresight, examining how the apparatus of capture structures the field of possibility through problem framings, actor configurations, and evaluative metrics. Lines of flight—including the sufficiency narrative, agroecology, and short food chains—emerge within the reports but are recurrently recaptured through semantic translation, institutional absorption, and scalar reframing. Silences, including food sovereignty and commons-based governance, mark the boundaries of the thinkable; degrowth occupies a boundary position, its diagnostic language absorbed while its political programme remained foreclosed. The longitudinal design traces an adaptive apparatus: successive exercises incorporated new sustainability discourses while preserving a growth-oriented trajectory. The article contributes a transferable analytical framework for critical futures research with implications for reflexive foresight design
Chemical fate in vitro: A physiological biokinetic (PBK) model for cell-based assays
No full textInternational audienceIn vitro toxicology assays are widely used in the context of toxicology to study in vivo outcomes and to improve mechanistic understanding of toxic responses. For this purpose, a better characterization of actual exposure and the fate of chemicals within the cellular test system is required. The present study aimed to develop a novel model, INSIGHT (In Silico Guide for Harmonized in vitro Testing), that integrates physiological and physi-cochemical parameters to better describe chemical fate in vitro and to guide assay design. The newly devel-oped model, integrating the dynamic features of the Virtual Cell Based Assay model with the partitioning framework of the Virtual In Vitro Distribution model, was calibrated using both a large literature dataset and original experimental data, comprising a total of 42 chemicals and 7 commonly used cell lines: HepaRG, HepG2, 3T3 Balb/c, PC12, MCF-7, RTgill-W1, and HEK293. These cell lines were selected for their diverse tissue and species origins, metabolic capacities, and potential for functional transport mechanisms, known to influence chemical kinetics. The INSIGHT model demonstrated flexibility and robustness across a range of cell lines when the parameters driving their metabolic activity or functional transport were informed. The present study underscores the pivotal function of logPow determination and the necessity for accurate calibration of partition coefficients, permeability, and metabolic processes to account for variability across cell lines and tested chemicals. This approach supports and facilitates enhanced experimental design and advancing quan-titative in vitro-to-in vivo extrapolation (qIVIVE) in toxicology and strengthens next generation risk assessment (NGRA) workflows
Hybrid digital twin-based data enrichment strategy for reliable machine learning-based diagnosis of ball bearings under multi-regime operating conditions
No full textInternational audienceAbstract Reliable fault diagnosis is essential for condition monitoring of rotating machinery, yet the scarcity of experimental data often limits the effectiveness of machine learning algorithms. A promising approach lies in constructing hybrid datasets that combine experimental and numerical data. However, if performed arbitrarily, such hybridization may degrade diagnostic reliability. This study proposes a systematic methodology for building hybrid databases for ball bearing fault diagnosis across multiple fault severities and varying operating conditions. The methodology is evaluated along three complementary axes: (i) single-condition performance, (ii) expandability to a wide range of speeds through the identification of a reliable variation range, and (iii) transferability of calibration parameters to neighboring regime operating conditions. Both homogeneous (quantitative enrichment) and heterogeneous (qualitative enrichment with unseen fault labels) hybridizations are investigated. Results demonstrate that even a small experimental fraction (≈10%) substantially enhances classification accuracy compared with purely numerical models, while stable performance (>90%) is achieved from about 30% of experimental data. In multi-speed scenarios, hybridization maintains generalization provided sufficient experimental anchoring, though the reliable range remains narrow and asymmetric. In heterogeneous configurations, high accuracy is preserved even with a single EC, as numerical enrichment effectively compensates for missing severities, provided the enrichment is balanced with the operating range
Surgical Management of Zollinger‐Ellison Syndrome in Multiple Endocrine Neoplasia Type 1 an AFCE and GTE Cohort Study. (Association Francophone de Chirurgie Endocrinienne and Groupe d'étude des Tumeurs Endocrines)
No full textInternational audienceABSTRACT Objective To describe surgical indications, procedures and outcomes in patients operated for Zollinger‐Ellison syndrome (ZES) in multiple endocrine neoplasia type 1 (MEN1) using a large nationwide cohort. Background Management of ZES in MEN1 remains controversial. Methods All patients with ZES diagnosed through the MEN1 AFCE/GTE network from 1985 to 2015. Results Among 233 ZES patients, 66 (28%) were operated for ZES‐related gastrinomas. Thirty‐three (51%) procedures aimed to remove gastrinomas and associated pancreatic neuroendocrine tumors (pNET(s)) with appropriate resection. Thirty‐two procedures (49%) aimed to remove gastrinomas alone (ZES group). Survival was decreased in patients metastatic at ZES diagnosis ( p < 0.001). Fifteen‐year survival among non‐metastatic patients was not significantly better in operated patients (82% vs. 70%, p = 0.2). Perioperative mortality was nil. Metastatic lymph nodes were found in 30/42 lymphadenectomies (71%). The choice between pancreaticoduodenectomy versus duodenal focused surgery in the ZES group was associated with pre‐operative detection of adenopathies ( p > 0.001), leading to more frequent lymphadenectomies ( p < 0.01). Previous pancreatic surgeries (30%) may have influenced the choice of ZES procedures. Gastrin levels were more frequently normalized when the duodenum and the head of pancreas were removed versus more localized duodenal surgeries ( p < 0.01). Conclusion The high rate of invaded nodes in lymphadenectomies in MEN1 patients operated for ZES, the absence of operative mortality, and the decreased survival in metastatic patients are indirect arguments for surgery. Pancreaticoduodenectomy may be indicated in young and fit individuals to better control hypergastrinemia and to prevent metastatic progression in the ZES group. Gastrinoma removal is justified when associated with large pNETs
