Portail HAL de l'Université Picardie Jules Verne
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"La fécondité de Saturne au féminin sans Vénus dans les mythes de fondation": Itinéraire d’une réhabilitation morale, du dieu castré et renversé de Pierre Bersuire(Reductorium morale) au puissant règne de ses sages héritières chez Christine de Pizan(Ops, Lavine et Junon, Cérès, Sémiramis et Minerve, Le livre de la Cité des Dames)
No full textInternational audienceThis article examines the reception of the myth of Saturn in Pierre Bersuire’s Reductorium morale during the pre-humanist period, in light of the contrasts and complementarities found in Christine de Pizan’s The Book of the City of Ladies. Whilst in Pierre Bersuire’s work Saturn, the deposed and castrated king, embodies the defining characteristics of the fable’s ambivalence—serving both as an exemplary narrative and a moral symbol of human instability—in Christine de Pizan’s work he shines through the women of her inner circle, at the heart of a vigorous dynasty freed from Venus. Saturn, the emasculator in Antiquity and then himself emasculated in the Middle Ages, indirectly offers an original resurgence of fertility and strength at the origin of civilisations, where his brilliant heiresses—Ops, Lavina and Juno, Semiramis, Ceres and Minerva—excel in ensuring the stability, protection and justice of human and political institutions. Christine thus helps to reinforce the moral credibility of the narrative surrounding the founding myths
Sexual Violence Among People Using Cyberporn
No full textInternational audienceSexual violence attitudes and behaviors involve complex interactions with rape myths acceptance (RMA) and coercive experiences. The study investigated the interactions between RMA, sexual coercive perpetration, and sexual coercive victimization, aiming to identify distinct subgroups based on their RMA, perpetration, and victimization scores and to determine predictive factors of group membership. A total of 1584 cyberporn consumers (aged 18-75 years; M = 33.18, SD = 10.84) residing in 47 different countries participated in an online survey. The majority of respondents were residents of the United States (45.6%) and the United Kingdom (26%). The survey comprised measures assessing rape myth acceptance (RMA), experiences of sexual violence, and a range of psychological, behavioral, and demographic variables. Data were analyzed using k-means clustering and logistic regression modeling. Results from K-mean clustering revealed two distinct groups: one displaying higher RMA and sexual violence perpetration scores, the other showing lower RMA but higher sexual victimization scores. Results from the logistic regression model indicate that gender (being male) is the strongest predictor of belonging to the first group (with higher RMA and sexual violence perpetration scores). In addition, individuals with high scores on compulsive cyberporn use, moral conflict regarding pornography use, dominance sexual motives, and heterosexual participants are more likely to belong to the first group. These patterns highlight how sexual violence experiences cluster differently among people using cyberporn and point to specific characteristics that could help identify individuals at risk of developing problematic attitudes toward sexual violence. Such findings could enhance the development of targeted prevention strategies.</div
Contrasting thermophilization among forests, grasslands and alpine summits
No full textInternational audienceClimate warming is shifting biological communities, with warmth-demanding species being favoured at the expense of cold-adapted species in a process referred to as thermophilization1-4. Because biodiversity responses often lag behind climate warming, climatic debts are accumulating in many ecosystems across the world5-7. Although we might expect that thermophilization and climatic debts will vary among habitats, standardized quantification across ecosystems is lacking. Here we analysed multidecadal data from 6,067 resurveyed vegetation plots over 12-78 years in forests, grasslands and on alpine summits across Europe. We demonstrate that forest understory and grassland plant communities experienced positive thermophilization, although not significantly different from zero. By contrast, alpine summit vegetation showed much stronger (up to five times) and significant thermophilization. Thermophilization was driven largely by increases in warmth-demanding species in grasslands, by declines in cold-adapted species on alpine summits and by both processes in forests. Significant climatic debts have accumulated in forests and alpine summits, but less so in grasslands, with debts positively correlated with macroclimate temperature changes. Our findings uncover divergent thermophilization trajectories and increasing climatic debts across ecosystems. Moreover, we highlight the mechanisms that enable some communities to track climate change more closely than others and provide a basis for projecting future shifts in plant communities under accelerating climate warming
Dynamic Computed Tomography Angiography for the Characterisation of Endoleaks after Endovascular Aneurysm Repair: Development and Feasibility of a Standardised Cine Protocol
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Federated Learning–Based Semi-Supervised IDS for Medical IoT
No full textInternational audienceThe rapid adoption of Internet of Things (IoT) technologies in the medical field has introduced new challenges in securing sensitive data against increasingly sophisticated cyber threats. To address the limitations of intrusion detection systems (IDS) that rely on centralized machine learning models, federated learning has emerged as a more privacy-conscious alternative, allowing distributed devices to collaboratively train models without sharing raw data. In this work, we propose a federated, semi-supervised intrusion detection system that couples unsupervised client-side representation learning using a variational autoencoder (VAE); specifically a β-VAE, with server-side classification learning using a small portion of labeled data. Beyond representation learning, we also use a VAE to generate synthetic data and oversample rare attacks. We evaluate across two IoT intrusion detection datasets: the BoT-IoT dataset and the WUSTL-EHMS-2020 Medical IoT dataset, and release simulation code to enable reproducible evaluation and fair comparisons. To explain performance gains, we compare the client-side latent space to that of a standard autoencoder (AE). On the BoT-IoT, the latent space is better structured, showing higher silhouette scores and clearer 3D cluster separations, which yields stronger detection. This improved representation supports stronger detection performance on both datasets while preserving privacy on connected medical devices
The experience of professionals receiving patients with manifestations of traumatic dissociation: a qualitative study
No full textInternational audienceBackground: Traumatic dissociation is defined as a disruption or disturbance in the integration of various cognitive functions in response to a traumatic event and has been the subject of extensive research in recent decades. For mental health professionals, exposure to patients with a history of trauma can have both negative and positive effects on their well-being. However, few studies have focused on the specific experiences of professionals encountering patients with traumatic dissociation.Method: This study analyzed the experiences of 23 professionals (psychiatrists, psychologists, and residents in psychiatry) working with patients presenting manifestations of traumatic dissociation, using Interpretative Phenomenological Analysis (IPA) methodology.Results: This approach led to the identification of three key themes: (1) professionals' reactions to patient dissociation, (2) professionals' emotional and dissociative response, and (3) factors influencing reactions and impact on professionals' life.Conclusion: In light of these findings, we propose several key points for training and supervision: taking into account the question of the body and physical contact; addressing the emotions experienced by professionals, particularly helplessness and loneliness, and carefully utilizing the diffusion of emotions and dissociation from the patient to the professional as a therapeutic tool to help patients self-regulate and reintegrate dissociated parts of themselves
Do People Get the Friends They Want? A Cross‐Cultural Investigation
No full textInternational audiencePeople desire friends who have qualities such as similarity, the ability to provide support, opportunities for socialisation, assistance in achieving self‐serving goals and access to potential mates. In the current study, we aimed to examine the degree of overlap between the friends people consider ideal and those they actually have. Using a sample of 6224 participants from 12 countries, we found that, across five dimensions of friendship, ideal and actual friendships considerably overlapped and ideal preferences were significant and strong predictors of actual friendships. Still, the overlap between ideal and actual friendships was not complete; rather, a small deficit emerged, with participants getting less of what they wanted. These results were consistent across the 12 countries in our sample. We also found significant effects of the Dark Triad personality traits on several dimensions of friendship
Characterisation of the Novel HLA‐DQB1*03:03:37 Allele by Next Generation Sequencing
No full textInternational audienceABSTRACT HLA‐DQB1*03:03:37 differs from the HLA‐DQB1*03:03:02:02 allele by one synonymous nucleotide at position 5745 in exon 4
Apport du concept de créolisation pour éclairer les mini-cycles d'apprentissage expansifs des étudiants à Mayotte
No full textInternational audienceCet article s'inscrit dans le cadre du projet ANR PIA3 eXtensible Mobile Éducation Mayotte (X-MEM) visant la transformation institutionnelle des usages numériques à l'Université. Notre contribution porte sur les usages, notamment du smartphone, dans les activités d'apprentissage des étudiants de l'Université de Mayotte, en les observant à partir d'une articulation entre le cadre théorique de la théorie historico-culturelle de l'activité (CHAT), notamment le concept de minicycle d'apprentissage expansif (Engeström, 1999), et celui de la créolisation (Glissant, 1997 ; Ménil, 2009 ; Payen, 2023). La problématique vise à comprendre comment les usages numériques instrumentés du smartphone par les étudiants peuvent révéler, à travers leurs tensions et reconfigurations, des processus de créolisation des pratiques d'apprentissage des étudiants, notamment numérique, et la façon dont cette créolisation s'articule avec les mini-cycles expansifs. L'enquête s'appuie sur 29 entretiens semi-directifs menés auprès d'étudiants entre 2023 et 2024, à partir desquels des récits phénoménologiques individuels ont été effectués.Le concept de créolisation permet ainsi de révéler les fondements du développement de mini-cycles d'apprentissage expansif dans l'activité des étudiants à travers la mise en valeur des inégalités, des rapports de domination, des mécanismes de résistance à l'oeuvre dans les phénomènes d'hybridations au sein des pratiques étudiantes, et d'interroger la capacité de l'institution à reconnaître et intégrer cette créativité située dans ses politiques éducatives.</div