Une enquête sur la sensibilisation aux questions de genre et aux préjugés sexistes des étudiants en médecine de premier cycle : la perspective de Terre-Neuve-et-Labrador

Background: Female physicians and patients experience gender bias in healthcare. The purpose of this research is to explore medical students’ gender bias toward physicians and patients and whether their bias varies by gender. Methods: We surveyed medical students at Memorial University between November 2020 and April 2021. We recruited participants through Facebook, email, and e-posters. We collected demographic information, including gender and class year. We used the Nijmegen Gender Awareness in Medicine Scale to measure gender sensitivity, gender role ideology toward patients, and gender role ideology toward doctors. We analyzed the data using averages and t-tests. Results: Mean gender sensitivity scores were 4/5 indicating high gender sensitivity. Gender role ideology toward doctors mean scores were 2/5 indicating that students did not hold strong stereotypical views toward doctors. Although male students scored higher than female students (p<.05), mean scores for gender role ideology toward patients were low for both male and female students (x̄<2), indicating low stereotyping toward patients. Conclusions: We found that students held largely non-biased ideologies surrounding gender in medicine and that female students were even less biased than male students for gender role ideology toward patients.Contexte : Les femmes médecins ou patientes sont victimes de préjugés sexistes dans les soins de santé. L'objectif de cette recherche est d'explorer les préjugés sexistes des étudiants en médecine à l'égard des médecins et des patients et de déterminer si ces préjugés varient en fonction du sexe. Méthodes : Nous avons procédé à une enquête auprès des étudiants en médecine de l'Université Memorial entre novembre 2020 et avril 2021. Nous avons recruté des participants au moyen de Facebook, du courrier électronique et d’affiches électroniques. Nous avons recueilli des données démographiques, y compris le sexe et l'année dans le programme. Nous avons utilisé l'échelle de sensibilisation au genre en médecine de Nijmegen pour mesurer la sensibilité au genre, l'idéologie du rôle du genre envers les patients et l'idéologie du rôle du genre envers les médecins. Nous avons analysé les données à l'aide de moyennes et de tests t. Résultats : Les scores moyens de sensibilité au genre étaient de 4/5, ce qui indique une grande sensibilité au genre. Les scores moyens de l'idéologie du rôle du genre à l'égard des médecins étaient de 2/5, ce qui indique que les étudiants n'avaient pas d'opinion stéréotypée à l'égard des médecins. Bien que les étudiants aient obtenu des scores plus élevés que les étudiantes (p<0,05), les scores moyens pour l'idéologie du rôle du genre à l'égard des patients étaient faibles tant pour les étudiants que pour les étudiantes (x̄<2), ce qui indique un faible niveau d’opinions stéréotypées à l'égard des patients. Conclusions : Nous avons constaté que les étudiants avaient des idéologies largement non biaisées concernant le genre en médecine et que les étudiantes étaient encore moins biaisées que les étudiants en ce qui concerne l'idéologie du rôle du genre envers les patients

Prefix-diffusion: A Lightweight Diffusion Model for Diverse Image Captioning

While impressive performance has been achieved in image captioning, the limited diversity of the generated captions and the large parameter scale remain major barriers to the real-word application of these systems. In this work, we propose a lightweight image captioning network in combination with continuous diffusion, called Prefix-diffusion. To achieve diversity, we design an efficient method that injects prefix image embeddings into the denoising process of the diffusion model. In order to reduce trainable parameters, we employ a pre-trained model to extract image features and further design an extra mapping network. Prefix-diffusion is able to generate diverse captions with relatively less parameters, while maintaining the fluency and relevance of the captions benefiting from the generative capabilities of the diffusion model. Our work paves the way for scaling up diffusion models for image captioning, and achieves promising performance compared with recent approaches.Comment: 11 pages,4 figures, 6 table

A Survey on Breaking Technique of Text-Based CAPTCHA

The CAPTCHA has become an important issue in multimedia security. Aimed at a commonly used text-based CAPTCHA, this paper outlines some typical methods and summarizes the technological progress in text-based CAPTCHA breaking. First, the paper presents a comprehensive review of recent developments in the text-based CAPTCHA breaking field. Second, a framework of text-based CAPTCHA breaking technique is proposed. And the framework mainly consists of preprocessing, segmentation, combination, recognition, postprocessing, and other modules. Third, the research progress of the technique involved in each module is introduced, and some typical methods of segmentation and recognition are compared and analyzed. Lastly, the paper discusses some problems worth further research

Effects of oxygen enrichment on diesel spray flame soot formation in O₂/Ar atmosphere

In this study, diesel spray combustion at oxygen-enriched conditions (oxygen volume fraction of 21–70 %) with argon dilution is experimentally investigated in a constant-volume combustion chamber. Optical diagnostics are employed to study flame development, stabilization, and soot formation at oxygen-enriched conditions. To further verify the experimental observations, two-stage Lagrangian simulations are used to analyze the effects of oxygen on the formation and oxidation of soot precursors, polycyclic aromatic hydrocarbons. Results show that replacing nitrogen in air by argon leads to a 50 % reduction of the flame lift-off length, an increased soot flame temperature by 300 K, and higher soot concentrations. Flame morphology and structure still follow the classic conventional diesel combustion model in the oxygen range of 21–40 %, while changes are observed when oxygen levels are higher than 50 %. The width and length of the soot flame are shortened, and chemiluminescence from intermediate species like CO dominates the flame natural luminosity at the spray head, where the flame temperature reaches near 3000 K. Soot reduction mechanisms at high-degree oxygen-enrichment conditions are investigated. The intrinsic mixing-limited combustion of diesel sprays leads to unavoidable fuel-rich areas locally, but the shortened flame lift-off length and sufficient oxygen supply confines soot-forming conditions to a smaller, upstream region. The residence time of fuel parcels in this confined soot-forming area is shortened due to the larger local spray velocity. Thereafter, fuel parcels enter a high-temperature fuel-lean region, where the formed soot is oxidized rapidly.</p

Effects of oxygen enrichment on diesel spray flame soot formation in O₂/Ar atmosphere

In this study, diesel spray combustion at oxygen-enriched conditions (oxygen volume fraction of 21–70 %) with argon dilution is experimentally investigated in a constant-volume combustion chamber. Optical diagnostics are employed to study flame development, stabilization, and soot formation at oxygen-enriched conditions. To further verify the experimental observations, two-stage Lagrangian simulations are used to analyze the effects of oxygen on the formation and oxidation of soot precursors, polycyclic aromatic hydrocarbons. Results show that replacing nitrogen in air by argon leads to a 50 % reduction of the flame lift-off length, an increased soot flame temperature by 300 K, and higher soot concentrations. Flame morphology and structure still follow the classic conventional diesel combustion model in the oxygen range of 21–40 %, while changes are observed when oxygen levels are higher than 50 %. The width and length of the soot flame are shortened, and chemiluminescence from intermediate species like CO dominates the flame natural luminosity at the spray head, where the flame temperature reaches near 3000 K. Soot reduction mechanisms at high-degree oxygen-enrichment conditions are investigated. The intrinsic mixing-limited combustion of diesel sprays leads to unavoidable fuel-rich areas locally, but the shortened flame lift-off length and sufficient oxygen supply confines soot-forming conditions to a smaller, upstream region. The residence time of fuel parcels in this confined soot-forming area is shortened due to the larger local spray velocity. Thereafter, fuel parcels enter a high-temperature fuel-lean region, where the formed soot is oxidized rapidly.</p