bluuebunny/crossref_metadata_2025 huggingface dataset:
Quelles représentations et quelles pratiques personnelles des IA génératives, pour quelles transpositions possibles aux usages scolaires ?
Authors: Alonso Béatrice , Bazile Sandrine , Cwiczynski Marie , Lauze Marianne , Mayoral Milène
Published: September 2024

L’article présente la phase exploratoire et préparatoire d’une recherche collaborative qui vise la production de ressources pour la classe et la formation d’enseignants autour des usages possibles des IA génératives en situation de production d’écrit, de la fin du cycle primaire aux premières années de l’université. À l’aune des recherches en éducation émergentes, portant sur le rôle possible des IA génératives en matière de production d’écrit, il s’agit de présenter la méthodologie et les premiers résultats de cette recherche, qui permettent, dans un premier temps, de mettre au jour les représentations des acteurs du projet concernant les IA génératives et d’identifier leurs pratiques en lien ou non avec les activités scolaires, et, dans un deuxième temps, à partir de la description de ces représentations et des usages buissonniers de ces outils, d’envisager la façon dont ces derniers pourraient nourrir la conception de ressources, dispositifs et activités d’enseignement mobilisant les IA génératives.
ChatGPT : un outil pour améliorer les compétences rédactionnelles et argumentatives des élèves
Authors: El Karfa Imane
Published: September 2024

L’étude explore l’intégration novatrice de ChatGPT, un modèle d’IA fondé sur le traitement du langage naturel, dans le contexte de l’enseignement secondaire. En adoptant une approche centrée sur l’amélioration des compétences rédactionnelles des élèves, elle met en lumière le potentiel de cette technologie pour transformer le processus d’écriture, en offrant un accompagnement personnalisé. L’utilisation de ChatGPT comme outil de réécriture, combinée à des prompts constructifs et à un accompagnement de l’enseignant permet aux élèves d’explorer différentes versions de leurs textes et d’apporter des améliorations significatives à leur production initiale. Cette approche favorise l’autonomie des apprenants. Les résultats de l’étude montrent une nette progression dans le groupe expérimental, ce qui souligne l’efficacité de cette méthode pour renforcer les compétences rédactionnelles des élèves. Ces résultats prometteurs ouvrent la voie à de nouvelles perspectives dans le domaine de l’éducation, mettant en lumière le rôle crucial des technologies d’IA dans l’amélioration de l’apprentissage de l’écriture.
Écrire « à la manière de… » avec ChatGPT au secondaire québécois
Authors: Brehm Sylvain , Acerra Eleonora , Lacelle Nathalie
Published: September 2024

Cette contribution étudie un corpus de textes de genres différents générés par ChatGPT, dans le cadre d’une activité d’écriture « à la manière de… » réalisée dans une classe de troisième année d’école secondaire au Québec (13-14 ans). Inscrit dans la lignée des travaux sur les écritures de la réception et sur la formation du sujet-lecteur-scripteur en contexte numérique, l’article interroge, conjointement, les attentes littéraires et technologiques des élèves lorsqu’ils envisagent la production littéraire avec une intelligence artificielle générative. Par l’analyse des six portfolios rédigés au fil de la séquence, sont décrites, d’une part, les caractéristiques principales des textes générés par ChatGPT, d’autre part, les justifications des commandes proposées par les élèves à propos, notamment, de la thématique choisie, du style de l’auteur pris comme modèle et des attentes relatives à la capacité de la machine de générer des textes de genres différents.
Que devient la créativité littéraire à l’heure de ChatGPT ?
Authors: Petitjean AMarie
Published: September 2024

L’arrivée de chatGPT dans l’espace public a provoqué une évolution notable des pratiques et des conceptions de l’écriture de création. C’est ce que montre cette étude qui compare deux années d’un même cours consacré à l’écriture numérique en master de création littéraire. La comparaison des scénarios de cours et d’une sélection de productions amène à identifier des usages différents du médium numérique pour faire réfléchir aux potentialités créatives, à l’engagement dans un processus d’écriture et aux critères de résistance des textes produits. L’intelligence artificielle se fait finalement reconnaitre comme un outil, voire un partenaire, qu’il est possible d’intégrer dans un dispositif pour faire écrire les étudiants.
Corrections de copies : les annotations des enseignants aident-elles les élèves à mieux écrire ?
Authors: Moysan Arnaud , Rinck Fanny , Mazziotti Sara
Published: September 2024

Cet article grand public déjà publié dans la revue The Conversation prend appui sur une recherche menée sur les écrits d’élèves (Programme ANR - ECalm). L’article s’intéresse aux annotations portées sur les copies des élèves en tant que rituel scolaire. Au-delà de la distinction entre celles qui donnent des conseils, avancent des questions, formulent des encouragements ou des critiques, les auteurs s’interrogent sur l’efficacité réelle de ces annotations. Sont-elles vraiment destinées aux élèves et pour quels usages ? Si les indications données sont essentiellement réservées à la correction de l’orthographe, comment favoriser une réécriture des textes étendue à d’autres composantes et, entre autres, aux choix syntaxiques, lexicaux ou énonciatifs, mais aussi aux procédés stylistiques, à l’enchainement des idées et à la cohérence du texte ? L’article propose ainsi d’envisager les annotations comme des aides à la réécriture, engageant de possibles remaniements en profondeur : l’enjeu est d’aider les élèves à retravailler leur texte au-delà des révisions de surface, de les conduire au sens de ce texte et éventuellement à un nouveau texte.
La lutte des plages des écoles de surf sur les communes du littoral sud-aquitain : gouvernance et discriminations socioenvironnementales
Authors: Falaix Ludovic
Published: September 2024

Cet article analyse les tensions géopolitiques locales qui sont liées à l’attribution d’une place sur la plage pour les structures qui proposent des offres d’enseignement et d’encadrement de la pratique de surf contre rémunération. L’objectif de cet article consiste d’une part à comprendre quels sont les critères qui président à l’élaboration d’un processus de sélection des demandes d’autorisation formulées par les clubs et les écoles pour pouvoir exercer un encadrement de l’activité et d’autre part d’interroger comment sont vécus et ressentis ces dispositifs au sein de la communauté des professionnels de l’enseignement du surf. Enfin, cet article entend mettre en lumière comment les critères de sélection des candidatures peuvent ouvrir le champ à des dérives de type clientéliste et comment les volets social et environnemental de ce processus politique local sont parfois instrumentalisés.
Paysages urbains et terrorisme
Authors: Bonnel Anne-Laure , Dory Daniel
Published: September 2024

Cette note donne à voir à voir les effets du terrorisme et du contre terrorisme sur les paysages urbains. Dans ce but trois documents photographiques concernant Paris sont analysés.
Les bâtiments de l’école publique en ville au 20 e siècle
Authors: Derouet-Besson Marie-Claude
Published: September 2024

Unbâtiment scolairetémoigned’évolutionsdémographiques, politiques, économiques, sociales et urbaines, de la définition de l’école pour le maître d’ouvrage, de sa conception par l’architecte et de dispositions spatiales intérieures liées aux pédagogies du moment. Des ruptures au 20 e siècle ont fait reculer les efforts d’homogénéisation des conditions d’enseignement au profit d’une diversification des lieux et des méthodes face à une différenciation sociale et culturelle des élèves et de leurs besoins. Aujourd’hui la revendication sécuritaire modifie le rapport à la ville.
Favoriser l’école privée : 20 ans de politiques économiques
Authors: Bonnéry Stéphane
Published: September 2024

Les gouvernants français ont conduit une offensive durable pour favoriser le financement de l’enseignement privé au détriment de l’école publique. Cette offensive a récemment pris de l’ampleur. La prise en compte des aspects économiques et démographiques, souvent négligés par les analyses, permet d’en comprendre les logiques. Elle explique l’imposition faite aux familles d’un choix contraint.
Embourgeoisement des collèges privés et résultats PISA
Authors: Merle Pierre
Published: September 2024

L’objet de l’article est d’étudier la transformation du recrutement social des collèges privés sous contrat. Sur la période 2017-2022, l’embourgeoisement de ces collèges privés est sensible et concomitant d’une réduction de leur mixité sociale inter et intra-établissements. L’embourgeoisement des collèges privés, observable depuis le début des années 2000, contribue à expliquer les performances scolaires moyennes des élèves français aux évaluations PISA et la forte inégalité de réussite selon l’origine sociale.
Les FTP-MOI
Authors: Vigreux Jean
Published: September 2024

L’article retrace l’histoire des Francs-tireurs et partisans de la main-d’œuvre immigrée (FTP-MOI), organisation de résistance communiste face au nazisme, depuis ses origines dans l’entre-deux guerres, à ses actions politiques et militaires, sa traque par les brigades spéciales de la police française collaborationniste, jusqu’au devenir de ses survivants après guerre.
Risques psychologiques et sociaux du salariat ubérisé et précaire
Authors: Castel Davy
Published: September 2024

Nous ne sommes pas toutes et tous égaux face aux risques psychologiques et sociaux. En prise directe avec les conditions de travail, ces risques s’accroissent lorsque ces dernières se détériorent. À ce titre, les récentes mutations du capitalisme, en particulier le développement du salariat précaire et de l’auto-entrepreneuriat « ubérisé » exposent grandement les travailleuses et travailleurs à ces risques. Nous proposerons dans cet article quelques éléments de constat et d’analyse avant de discuter des pistes qui pourraient être envisagées pour y faire face.
Ennui
Authors: Vermeren Patrice , Navet Georges
Published: September 2024

Au fil de ses lectures érudites, l’auteur cerne la constitution du questionnement sur l’ennui tel qu’il émerge principalement dans la littérature du XIX e siècle. Loin d’être seulement une expérience existentielle, l’ennui provoque une réflexion ontologique qui nous est restituée ici dans sa continuité depuis Pascal jusqu’à Jankélévitch : serait-il la clé de toute écriture ?
Colonialité numérique : mythe du rattrapage et transgression
Authors: Palmieri Joëlle
Published: September 2024

La colonialité numérique se traduit par une reconfiguration des dominations (classe, race, sexe) alimentée par la société de l’information. Avec Instagram, SnapChat, WhatsApp, etc., les utilisateurs et les utilisatrices doivent faire face à des violences épistémiques, accompagnées d’un discours politique dominant qui tend à les individualiser. Parce que, en concertation avec les États, les entreprises qui créent ces applications nient l’historicisation, la contextualisation et le genre des savoirs des utilisateurs et des utilisatrices, leur apprentissage et leur création de pensée en sont affectés. Paradoxalement, des usages transgressifs des outils numériques sont mis en place par des individus ou des organisations ; ils passent par la libération de savoirs non savants, rendus visibles par des “passeurs et des passeuses de savoirs” à l’affût d’une pédagogie critique qui transforme radicalement les normes sociales.
Le décolonial en éducation : quelles perspectives possibles en France ? Réflexions sur les conditions de possibilité du recours à la théorie décoloniale hors de l’Amérique du Sud
Authors: Pereira Irène
Published: September 2024

Cet article présente une réflexion sur la théorie décoloniale en essayant de se situer en dehors des polémiques qui affectent souvent la réception de ce courant en France. L’objectif est de discuter certains points historiques, sociologiques et philosophiques liés à la transposition de cette approche hors du contexte latino-américain. Il s’agit en particulier de se demander dans quelle mesure l’approche décoloniale est réutilisable en éducation en France. L’article se termine en présentant trois axes de mise en œuvre.
« Dialoguer et travailler avec l’éducation » : entretien avec Djamila Ribeiro
Authors: Dupeyron Jean-François , Akou Olga Kochie , Anacaona Paula
Published: September 2024

Dans cet entretien, la philosophe brésilienne Djamila Ribeiro évoque les voies par lesquelles la pensée féministe noire brésilienne peut dialoguer et travailler avec la philosophie de l’éducation. Pour cela, elle mobilise l’esprit général des critiques décoloniales et aborde des exemples tels que l’éducation antiraciste et la décolonialisation des savoirs. L’héritage de Paulo Freire est ainsi complété et actualisé, dans le cadre d’un mouvement qui s’incarne dans des pratiques pédagogiques intersectionnelles.
Arrêt sur image de la formation en visioconférence : la place du regard et de la vue dans la relation pédagogique
Authors: Patiño-Lakatos Gabriela , Méloni Dominique
Published: September 2024

Cet article analyse la place de l’image dans la situation éducative ainsi que ses possibles effets sur l’engagement du lien éducatif. Notre analyse s’appuie sur une expérience d’enseignement à distance pendant la période de crise épidémique avec des étudiants en deuxième année de sciences de l’éducation. Nous mettons en évidence comment la spécificité du dispositif d’enseignement en visioconférence peut renforcer les préoccupations fantasmatiques des étudiants pour l’image et pour le regard dans la situation éducative, alors qu’elle représente justement un lieu où cette image se constitue à travers le regard des pairs et celui de l’enseignant. Nous cherchons, avant tout, à souligner en quoi la question de l’imaginaire des étudiants engagée dans cette situation peut nous éclairer sur les processus inhérents à la situation éducative ordinaire et sur sa spécificité dans notre société contemporaine.
Moïse, l’Égyptien : problématisations sur l’identité, l’identification et la décolonialité
Authors: Birman Joel
Published: September 2024

L’intention de cet essai est de problématiser l’inscription du discours psychanalytique, avec Freud, dans le domaine du post-colonialisme, en soutenant la catégorie d’identification et en critiquant la catégorie d’identité, ainsi qu’en mettant l’accent sur la réversibilité dialectique de l’opposition entre les registres de la civilisation et de la barbarie.
Écrire l’inceste
Authors: Leleux Fabienne-Charlotte
Published: September 2024

Christine Angot distingue littérature et témoignage lorsqu’ils s’emparent de l’inceste, interdit au fondement du langage et de la civilisation. Au témoignage, le respect des normes établies en la matière (genre littéraires, codes, logique, etc.), à la littérature le soin, tout en restant lisible, de travailler, de l’intérieur, par l’énonciation, les faux-semblants du discours dit civilisé. Serait ainsi pris à son propre piège, le discours convenu, celui qui (s’)accommode (de) la Loi. Qui parle, est-ce vrai ? C’est au discours-même que Christine Angot s’en prend, à ses non-dits exhibés, à ce que l’inceste amène à provoquer du langage (et inversement).
Malaise et violence dans l’école
Authors: Rubiliani-Lenne Sylvie
Published: September 2024

Qu’on parle d’insécurité, de brutalité ou de violence, qu’il s’agisse de ressenti ou de faits constatés, le malaise profond qui touche l’École en France aujourd’hui sape de façon très préoccupante le moral de ses acteurs, qu’ils soient élèves, professeurs ou parents. L’origine de cet état d’accablement et de découragement qui conduit à des comportements condamnables est à l’évidence multifactorielle. Ce constat met en évidence la perte d’une confiance partagée, laquelle permettait à l’institution de répondre à la mission qui lui était fixée depuis la fin du XIX e  siècle. Repérer dans et hors l’école les causes de ce délitement et tenter d’y apporter quelques réponses sont l’objet de cet article. Whether we’re talking about insecurity, brutality, or violence, and whether we’re talking about feelings or facts, the deep malaise that is affecting the French school system today is profoundly undermining the morale of its actors: pupils, teachers, or parents. The source of this state of overwhelm, of discouragement, which leads to reprehensible behavior, is clearly multifactorial. This points to the loss of shared trust, which allowed the institution to respond to the mission entrusted to it for 150 years.
Trends in Academic Business Libraries 2022-2023: Highlights from Annual Reports of the Academic Business Library Directors (ABLD)
Authors: Peterson Kenneth J
Published: September 2024

This annual survey provides an analysis of the activities, challenges, and advancements reported by American Business Library Directors (ABLD) for 2022-2023. The analysis focuses on new and ongoing initiatives, organizational changes, staff developments, physical space improvements, collection changes, budget issues, vendor issues, business school-related matters, key factors affecting libraries, and other relevant updates. The findings highlight the dynamic nature of business libraries and their continuous efforts to meet the evolving needs of their academic communities.
Student Satisfaction in Teaching Innovation Projects
Authors: Gómez Tamara Guerrero , Alcántara-Pilar Juan Miguel , Rodríguez-López María Eugenia , Rojas-Lamorena Álvaro J. , Abdellah Shakira Abarkane
Published: September 2024

Currently turning the student into an agent involved in the subject is more than a milestone to be achieved; it is a fundamental phenomenon in their maturation and learning process. The business plans on which the empirical study presented in this work has been carried out allows us to know the degree of satisfaction that the student presents when being involved in this type of evaluation activities and also to know how gender can influence the impact of different factors in determining how satisfied they feel when they actively participate in changes in higher education. Therefore, this work seeks to describe the most significant variables when it comes to knowing the satisfaction and/or opinion of the students and to be able to turn the results into positive elements of improvement in the classes.
A Comprehensive Meta-Analysis of IoT Integration for Data-Driven Decision Making in Education
Authors: Çela Eriona , Potluri Rajasekhara Mouly , Vajjhala Narasimha Rao
Published: September 2024

This chapter systematically reviews the literature on using internet of things (IoT) technologies to enable data-driven decision-making in educational institutions. As educational environments become increasingly complex, the ability to collect, analyze, and act upon data is crucial for institutional improvement. IoT technologies offer opportunities for educational leaders to optimize various aspects of campus operations, enhance student experiences, and improve administrative efficiency. The chapter explores IoT adoption in education, highlighting key technological advancements and their data collection and analysis applications. This chapter examines how IoT-generated data can inform resource allocation, facility management, and student services decisions. This chapter also addresses the challenges and barriers to integrating IoT in educational decision-making, including issues related to data privacy, security, and the need for robust data governance frameworks.
The Role of Big Data in Sustainable Solutions
Authors: Igoche Igoche Bernard , Ayem Gabriel Terna
Published: September 2024

Big data analytics plays a pivotal role in addressing sustainability challenges and driving the adoption of sustainable solutions across various sectors. It enables organizations to collect, analyze, and derive insights from large volumes of data generated by diverse sources, including sensors, IoT devices, and digital platforms. By leveraging advanced analytics techniques such as machine learning, predictive modeling, and data visualization, organizations can uncover patterns, trends, and correlations in data to inform decision-making and drive innovation in sustainability. This chapter gives a practical demonstration of how big data analytics can be applied to visualize, analyze, and extract knowledge from an admission database of a polytechnic system and use the same for machine learning (ML) predictions and explanations of the predictions for informed decision-making.
Future of Smart Manufacturing With IoT in Industry 5.0
Authors: Singh Bhupinder , Jermsittiparsert Kittisak
Published: September 2024

Industry 5.0 has created a more stable and networked industrial environment using the internet of things (IoT). Industry 5.0 creates a work environment where human-machine interaction is optimized for better performance by combining human cooperation with robots and intelligent equipment. Industrial internet of things (IIoT) includes various services in large settings, such as digital domains for company management, real-time production monitoring, and machinery condition tracking. Industry 5.0 aims to achieve the best possible balance between productivity and efficiency in various sectors, including heavy manufacturing, oil and gas, and warehouse management, which heavily rely on heavy gear. This chapter comprehensively explores the multiple dimensions of the IoT in Industry 5.0 used in intelligent manufacturing for fault screening and mechanical diagnosis and prognosis.
Assessment of the Influence of Surface Quality on the Bending Fatigue Strength of WAAM Ultra-High-Strength Steel
Authors: Hietala Mikko , Keskitalo Markku , Jaskari Matias , Päkkilä Joonas , Järvenpää Antti
Published: September 2024

This investigation evaluates the influence of surface quality on the bending fatigue strength of Wire Arc Additive Manufacturing (WAAM) Ultra-High-Strength (UHS) steel, The study is focused on structural integrity, hardness, surface roughness, tensile strength, and bending fatigue performance. Cross-sectional analysis reveals slight variations in wall thickness, averaging 5.5 mm, with an absence of discernible pores or defects, affirming the process's capability to yield high-quality results. Hardness assessments indicate uniformity across the deposited component, with an average hardness of 303 HV, emphasizing consistent material properties. Surface roughness analysis highlights superior fatigue strength in polished samples compared to machined and as-built ones, with roughness inversely impacting fatigue resistance. Tensile tests confirm satisfactory yield and tensile strength, with favorable ductility characteristics. Bending fatigue tests show that surface quality significantly influences fatigue strength, with polished samples exhibiting the highest fatigue limit. Conversely, as-built surfaces display the lowest fatigue strength due to increased sensitivity to crack initiation, emphasizing the critical role of surface quality in UHS steel fatigue performance. These findings underscore the suitability of WAAM-printed UHS steel for structural applications while emphasizing the importance of surface quality in determining fatigue resistance and overall component performance.
Simulation of Temperature and Humidity Effect on Thermal Conductivity of Cellulose Fiber-Based Multilayered Insulation Materials for Building Envelope Applications
Authors: Anh Le Duong Hung
Published: September 2024

The present study aims to numerically investigate the effective thermal conductivity values (ETCs), the thermal transmittance coefficient (U-value), heat and moisture flux of the multi-layered insulation materials in regard to the influence of temperature and humidity variations for building envelope applications. The research model is performed as an exterior wall structure including 3 layers in order oriented stranded fiberboard (OSB), cellulose fiberboard (CFB), and oriented stranded fiberboard (OSB) in which the cellulose fiberboard plays as a core layer. For the stationary study, results showed that ETCs increased slightly with the increase of temperature (5-20 °C) and the increase of humidity levels (33-90%). Besides, the thermal transmission recorded a significant decrease when the thickness of CFB changed from 50 to 200 mm. Accordingly, the reduction of U-value is very close to the reference value (0.24 W/(m2·K)) demonstrating that the defined model could be potential for practical study. Interestingly, the dynamic study highlighted a larger difference in the ETCs in summer than in winter due to the great influence of moisture migration in the value and phase change of the heat flux fluctuation. As a result, the simulation indicated the general trend of the ETCs was always associated with the variations of ambient temperature and relative humidity. Therefore, the proposed model and its numerical works could be considered as the prominent solution for practical use in building envelope applications.
Extruder for Concrete Containing PET Resin and Coir Fiber in Concrete 3D Printing Robot
Authors: Dang Tri Dung , Nguyen Truong Thinh
Published: September 2024

The efficiency and precision of a concrete 3D printing robot's extruder unit are critical to its proper operation. This paper digs into the painstaking research and design of an extruder specialized to meet the needs of large-scale concrete 3D printing projects. The composite material's specific features and parameter settings are systematically evaluated. It is composed of a distinctive blend of cement, sand, Polyethylene Terephthalate (PET) resin beads, and coir fiber. These insights enable the careful selection of an extrusion head design that works in tandem with the material's particular properties. Following the design process, a thorough evaluation of the extruder's functionality is carried out through rigorous testing. The study is fully focused on the conceptualization, development, and fabrication of superior extrusion heads, opening the path for improved performance in the field of concrete 3D printing robotics.
Fundamental Study on Oblique Impact Drive Stage for Ultra Precision Positioning
Authors: Sakuta Shigeru , Takada Yusuke
Published: September 2024

A new ultra-precision positioning system is introduced in this paper. Experiment results show that using oblique impact drive, stage can be positioned in one axis as well as rotated around one axis by one actuator, that is, 'One-actuator-two-motion'. This means that simpler positioning system is possible, resulting in compact system, less components, more reliability, less costly system, which lead to SDGs.
Performance of Moored Real-Time Ocean Observations During Cyclones in the Bay of Bengal
Authors: Ranganathan Sundar , Weller Robert A. , Venkatesan Ramasamy , Tandon Amit , Arul Muthiah M , Mohapatra Mrutyunjay
Published: September 2024

Abstract Cyclones tracking northward across the Bay of Bengal represent a significant threat to life and safety when they make landfall. Surface moorings of the Ocean Moored Network for the Northern Indian Ocean in the Bay of Bengal have been deployed to provide real-time
observations in support of improved alerts and predictions of cyclones. Engineering goals are both to develop robust surface moorings that survive and to field meteorological and oceanographic instruments that reliably provide data in real time. While the mooring design and reliability were
previously reported, the focus here is on the motivations for installing the instrumentation, and on experience gained during the passage of cyclone Amphan in May 2020, examining the sensor as well as mooring performance. The paper presents reasons for fielding the chosen sensors, merits,
and shortcomings during the effort to observe Amphan, and recommendations for how to better address the challenges of providing real-time observations of cyclones in the Bay of Bengal.
An Evolving Blue Economy: Exploring the Future for Marine Renewable Energy
Authors: Chang Grace , Schmaus Carrie , Kendall James J. , Kohut Josh T. , Kramer Sharon , Perry Ruth
Published: September 2024

Abstract Offshore energy generation is one of the fastest-growing U.S. marine sectors, ranging from expanding deployment of offshore wind to rapid development and testing of technologies for energy conversion from waves, tides, ocean currents, and gradients in temperature,
salinity, and pressure. Generating energy from the offshore environment creates expanded opportunities to improve upon the collection of ocean and coastal-derived data and information that will support economic and maritime growth, the management of resources, and solutions to address societal
and climate issues. Despite its many promises and challenges, barriers remain for widespread implementation of offshore energy generation technologies that address the nation's energy needs and climate change. A town hall was convened to present a vision of the changing ocean-scape through
the lens of marine renewable technologies and to explore innovative solutions that these technologies might offer to support the New Blue Economy.
A Comparison of the Use of Propofol versus Midazolam for Pediatric Magnetic Resonance Imaging Sedation: Retrospective Cohort Study
Authors: Ismail Mohammed I. A. , Aldmour Ashraf , Al-Husinat Lou’i , El-Gendy Gehane A. , Mansour Sherif W.
Published: September 2024

The Aim of the Present Study:

The aim of the present study was to do a comparison of the recovery profiles and airway-related adverse events of pediatric magnetic resonance imaging (MRI) sedation patients who received propofol alone to those who received midazolam alone.

Methods:

This retrospective cohort study was approved by the Mutah University Ethical Approval Committee (No. 2378). A search of the patients’ medical records was performed between September 2021 and April 2022 to identify children aged 4 months–11 years who received propofol or midazolam for MRI sedation. The patients were subdivided into two groups: Those who had propofol alone (propofol group) and those who received midazolam (midazolam group) for pediatric MRI sedation. In propofol group, a 1–2 mg/kg of propofol bolus was given to have a deep sedation (Ramsay Sedation Scale score of 5). Patients in midazolam group received 0.05 mg/kg of midazolam. During the maintenance state of sedation, the patient received 150 µg/kg/min of propofol, and the infusion rate was adjusted in 25 μg/kg/min increments up or down at the discretion of the anesthesiologists to maintain a state of deep sedation. The major targets of this study were recovery profiles (time to awake and time to discharge) and airway-related intervention ratios in pediatric MRI sedation patients. Patient demographics, MRI sedation, and recovery data, including propofol induction dose, airway intervention, and sedation-related adverse events from the pediatric sedation recovery unit were also collected.

Results:

The mean (standard deviation [SD]) propofol induction dose was higher compared to midazolam group (2.4 [0.7] mg vs. 1.3 [0.5] mg; mean difference, 1.1 mg; P < 0.001). The mean (SD) infusion rate was higher in propofol group compared to midazolam group (161.3 [37.6] μg/min/kg vs. 116.2 [25.6] μg/min/kg; mean difference 45.1 μg/min/kg; P < 0.001). The mean (SD) propofol total dose was higher in propofol group compared to midazolam group (236.3 [102.4] mg vs. 180.7 [80.9] mg; mean difference, 155.4 mg; P < 0.001). The mean (SD) time to awake was longer in midazolam group compared to propofol group (21.2 [5.6] min vs. 23.0 [7.1] min; mean difference, 1.8 min; P < 0.001). The mean (SD) time to discharge was longer in midazolam group compared to propofol group (34.5 [6.9] min vs. 38.6 [9.4] min; mean difference, 4.1 min; 95% confidence interval, 3.0–5.1; P < 0.001).

Conclusion:

The administration of midazolam during pediatric MRI sedation can decrease the frequency of airway complications without prolonging the clinically significant recovery profile.
New Insight in Using of Mesenchyme Stem Cell Conditioning Medium for the Impaired Muscle related Biomarkers: In vivo Study with Rat Model
Authors: Kartika Ronald Winardi , Sidharta Veronika Maria , Djuartina Tena , Sartika Cynthia Retna , Timotius Kris Herawan
Published: September 2024

Aims and Objectives:

This study aimed to investigate the effects of Umbilical Cord Mesencymal Stem Cell Conditioning Medium (UC MSC-CM) administration on body weight recovery and the level of four molecular biomarkers, namely Superoxide Dismutase (SOD), vascular Endothelial Growth Factor (VEGF), C-Reactive Protein (CRP), and myostatin.

Materials and Methods:

Secretome was injected intramuscularly twice at 1.5 mL (day 7 and 14) into the right thigh of high-dose, short-term galactose-induced aging rats. The data of day 7 (before) and day 21 (after the administration) were evaluated. The body weights and the four biomarkers were measured before (day 7) and after intervention (day 21).

Results:

This study showed that the UC MSC-CM intramuscular administrations did not influence body weight regeneration. However, it could increase SOD and VEGF levels and decrease CRP and myostatin levels.

Conclusion:

Treatment with UC MSC-CM is a promising and potential agent in treating sarcopenia.
Image-guided Hypofractionated Radiotherapy as an Alternative to Radical Prostatectomy in Localized Prostate Cancer in Elderly Patients with Low Life Expectancy
Authors: Jain Neeraj , Jain Anshi , Sharma Ramita , Sachdeva Kanchan , Kaur Amandeep , Sudan Meena
Published: September 2024

Introduction:

Radical prostatectomy is appropriate for any patient whose cancer appears clinically localised to prostate. However because of potential perioperative morbidity, radical prostatectomy is generally reserved for patients whose life expectancy is more than ten years. Moderate hypofractionation for localized prostate cancer is safe and effective. There is a growing body of evidence in support of extreme hypofractionation for localized prostate cancer. Hypofractionation for prostate cancer was originally carried out in the pursuit of efficiency and convenience, but has now attracted greatly renewed interest based upon a hypothesis that prostate cancers have a higher sensitivity to fraction size, reflected in a low α/β ratio, then do late responding organs at risk such as the rectum or bladder.

Material and Methods:

From January 2017 to December 2020 we treated 112 patients of localised Prostate Cancer with Image Guided Radiotherapy (IGRT). They were in range of 75-85 years. They were of stage T1-T3, N0 or N1. There were significant comborbidities. ECOG performance status was 0-1. They were given 3 months of Androgen Deprivation Therapy (ADT) before starting IGRT. Patients were immobilised with casts and subject to CT simulation. CBCT was taken daily. Dose was 70 Gy @ 250 cGy per fraction at a frequency of 5 fractions per week. Complete blood counts were done weekly for assessment of haematological toxicity. Androgen Deprivation Therapy was continued post IGRT.

Results:

All the patients were able to complete the treatment. Evaluation was done at one month, three month and six months post treatment. 104 out of 112 patients achieved complete response. Other 8 had near complete response. There were no acute grade 3-4 toxicities. Grade 1-2 toxicities like skin desquamation, diarrhoea, burning micturition were managed conservatively. Late toxicity was rectal bleeding seen after one year of completion of treatment and was managed with steroid enemas. 23 patients required argon plasma laser therapy.

Conclusion:

Image guided radiotherapy is well tolerated, easy to implement and an effective alternative to radical prostatectomy in elderly patients with comorbidities and low life expectancy.
Predictive Factors for Bowel Resection in Childhood Intussusception
Authors: Salahoudine Idrissa , Othmane Alaoui , Abdelhalim Mahmoudi , Khalid Khattala , Youssef Bouabballah
Published: September 2024

Background:

Intestinal intussusception is the most common cause of intestinal obstruction in infants and children under 3 years of age. Any delay in diagnosis or management can lead to intestinal ischaemia and perforation. The aim of this study is to determine the sociodemographic and clinical risk factors associated with bowel resection in infants and children with intussusception.

Materials and Methods:

This is a retrospective analytical study of 118 patients operated at the Hassan II Hospital and University of Fez between 1 January 2008 and 1 January 2018. A comparison of risk factors between patients with and without bowel resection was performed using multivariate logistic regression.

Results:

One hundred and eighteen patients met the inclusion criteria. Of these, 44% had undergone bowel resection. Age >2 years (P = 0.006), duration of symptoms progression of more than 2 days (P = 0.002), bilious vomiting (P = 0.04) and palpation of an abdominal mass (P = 0.01) were significantly associated with bowel resection. Multivariate logistic regression showed that age <2 years (odds ratio [OR] =4.47 95% confidence interval [CI]: 1.12–17.78) and duration of symptom progression of more than 2 days (OR = 2.62 95% CI: 1.12–6.11) were independent risk factors for bowel resection.

Conclusion:

Intussusception that occurs in child old than 2 years of age, or which has progressed for more than 2 days, is associated with an increased risk of intestinal resection.
Epidermoid Splenic Cyst in Children Treated by Laparoscopic Partial Splenectomy
Authors: Sadjo Salihou Aminou , Destinval Christelle , Kouassi-Dria Sophie Amenan Kan , Lienard Julie , Ranke Aline , Larmure Olivier , Berte Nicolas , Gomola Vladimir , Lemelle Jean-Louis
Published: September 2024

Epidermoid splenic cyst is a rare benign tumour in children, accounting for 10% of all cystic lesions of the spleen and is the most common diagnosis of non-parasitic splenic cysts. Its discovery could be incidental or happen after an imaging workup for a mass or abdominal pain. Since total splenectomy exposes a patient to the occurrence of overwhelming post-splenectomy infection, laparoscopic partial splenectomy has been increasingly popular over the past two decades because it preserves the immune function of the spleen. This technique should only be performed by a well-trained team because of the high risk of bleeding. The authors report the cases of three patients who underwent laparoscopic partial splenectomy: a 7-year-old girl with no relevant history with a 4.5-cm epidermoid cyst involving the lower pole of the spleen, a 13-year-old boy, type 1 diabetic on insulin therapy, with a 7-cm epidermoid cyst of the upper pole of the spleen and a 14-year-old girl, with no previous history, with a 6-cm upper pole epidermoid splenic cyst. Operating times were 2 h 30 min, 3 h and 4 h 30 min, respectively. The intraoperative blood loss was 100 mL, 350 mL and 300 mL, respectively. The length of hospital stay was 6 days for each patient. No blood transfusion was performed perioperatively. With a mean follow-up duration of 21 months (32 months, 21 months and 10 months, respectively), no complication or recurrence occurred.
Tubercular Mediastinal Lymphadenopathy Presenting as Hoarseness of Voice Confirmed by Endoscopic Ultrasound
Authors: Rodrigues Anish Antonio H. A. Dos R. , Sahu Manoj Kumar , Balekuduru Avinash Bhat
Published: September 2024

Hoarseness of voice due to unilateral vocal cord palsy as the first clinical presentation of tuberculosis (TB) has been rarely reported. A 15-year-old female presented with a sole history of hoarseness of voice for the past 4 months. Axial computed tomography (CT) at the level of vocal cords revealed dilation of the left laryngeal ventricle with ipsilateral deviation of arytenoid cartilage (sail sign), suggestive of left vocal cord palsy. Thoracic CT revealed multiple necrotic mediastinal lymphadenopathy, which on endoscopic ultrasound-guided biopsy confirmed TB. She was started on regular antitubercular therapy, and her voice significantly improved after 1 month.
Effect of Reduced-Step Polishing Systems on Color Stability of Nanocomposites Submitted to Thermocycling Staining with Common Beverages - An In Vitro Study
Authors: Naji Weam D. , Abd-Alla Manal H.
Published: September 2024

Context:

Long-term color stability of composite resins is one of the most important factors influencing the clinical longevity of aesthetic restorations.

Aims:

This study evaluated the effect of novel reduced steps and gold standard multiple steps polishing systems of two composite resins; a nano-filled (Filtek Z350XT) versus a supra-nanofill (Palfique LX5) on their color stability after submitting to thermocycling with common beverages.

Materials and Methods:

Sixty disc-shaped specimens were fabricated from both composite resins (n = 30). From each material, ten specimens acted as the control group (Mylar strip), ten specimens were polished with Sof-Lex Diamond spirals, and ten were polished with Super-Snap X-Treme discs. All the specimens were thermocycled with staining solutions. Color was measured by a spectrophotometer before and after thermocycling and color difference (ΔE*) was calculated.

Statistical Analysis Used:

One-way analysis of variance followed by Tukey’s post-hoc test and independent t-test (α = 0.05) were used.

Results:

A significantly highest color change was recorded for both control subgroups (P < 0.05), and the Sof-Lex Diamond spiral showed significantly the lowest color change (P < 0.05). Both the control and Sof-Lex Diamond spiral subgroups of Palfique LX5 produced significantly lower color change compared with subgroups of Filtek Z350 (P < 0.05).

Conclusions:

Sof-Lex Diamond spiral polishing system provided the least color difference for both composites, while there was no significant difference between the materials when the Super-Snap X-Treme polishing system was used.
Salivary Calprotectin Levels and Bone Mineral Density in Post-Menopausal Women With and Without Chronic Periodontitis - An Evaluative Study
Authors: Pavithra J , Ramesh Amitha , Thomas Biju , Kumari N Suchetha , Sharmila K. P.
Published: September 2024

Introduction:

Menopause is a normal developmental stage in a woman’s life marking the permanent cessation of menstruation. Periodontitis and osteoporosis are noteworthy health concerns in post-menopausal women. Calprotectin is an inflammatory biomarker for precise diagnosis of periodontal disease.

Materials and Methods:

This study was performed to evaluate the variations in salivary calprotectin levels and bone mineral density in post-menopausal women with and without chronic periodontitis. The study included 24 post-menopausal women aged 45-57 years and was divided into group 1 (12 post-menopausal women without chronic periodontitis) and group 2 (12 post-menopausal women with chronic periodontitis). Unstimulated salivary samples, panoramic radiographs and clinical examination were performed.

Results:

The collected samples were combined with CALPRO antibody with horseradish peroxide (HRP) that results in the formation of antigen-antibody complex. Tetramethylbenzidine (TMB) solution was added that turned blue. Colour change was measured at 450nm. A human ELISA kit was used. Data collected were sent for statistical analysis.

Discussion:

There was a statistically significant difference in salivary calprotectin levels between groups 1 and 2 (P = 0.016) and no statistical difference in mean bone mineral density levels between the two groups (P = 0.235). A positive correlation was seen between salivary calprotectin levels and bone mineral density in group 2 (P = 0.013).
Tissue Interactions in Dense Tissues of the Orofacial Region in Patients with Connective Tissue Dysplasia
Authors: Korshunov Andrey S. , Konev Vladimir P. , Kuryatnikov Kirill N. , Torokhov Andrey L. , Sarf Elena A. , Bel’skaya Lyudmila V.
Published: September 2024

Aims:

This study aimed to investigate the rate and quality of maturation of the mineral component of impacted teeth 38 and 48 and a fragment of the human lower jaw with connective tissue dysplasia (CTD) in different periods of postnatal ontogenesis.

Methods and Material:

The study involved 102 males (76 with CTD and 26 without CTD), divided into age groups: 31–40, 41–50 and 51–60 years. For medical reasons, teeth 38 and 48 were removed from each patient, as well as a fragment of the alveolar part of the lower jaw in the projection of teeth 38 and 48 measuring 0.5 × 0.5 cm. The odontological parameters, the mineral density of the enamel and the lower jaw, the length and width of the enamel prisms, the spatial organisation of collagen fibrils and the dimensions of the bone plates of the lower jaw were determined.

Results:

A decrease in optical density was observed at the age of 41–50 and 51–60 years with dysplasia, which indicated a decrease in mineral density and the presence of total areas of hypomineralisation relative to the age of 31–40 years. In the age groups of 41–50 and 51–60 years, pronounced sclerosis and deformation of the delimiting elements were observed at the border of the connective tissue structures and the periosteum. At the age of 31–40 years, the level of stratification of the bone plates was local; after 40 years, it was generalised.

Conclusions:

Progressive osteoporosis of the lower jaw and incomplete amelogenesis are obstacles to the correct and harmonious eruption of the lower ‘wisdom’ teeth after 30 years.
Effect of Fluoride-releasing Resin Cement on the Development of White Spot Lesions Around Orthodontic Brackets - A Retrospective Study
Authors: Mohsen Merati , Berahman Sabzevari
Published: September 2024

Aims:

This study aimed to assess the effect of G-CEM, a fluoride-releasing cement, on the development of white spot lesions (WSLs) and their severity around orthodontic brackets.

Methods and Materials:

This case-control study was conducted by reviewing 140 dental records of fixed orthodontic patients presenting to an orthodontic clinic. The patients were assigned to two groups (n = 70). In group 1, Transbond XT resin cement, and in group 2, G-CEM had been used for bracket bonding. The frequency and severity of WSLs in each group were evaluated by assessing the available post-treatment photographs of patients and notes left by their orthodontist in their records in this regard. The number of teeth with WSLs in each patient was recorded, and the severity of lesions was categorised by Gorelick’s analysis.

Statistical Analysis:

Comparisons were made using independent t-test, Wilcoxon test and Mann–Whitney test (alpha = 0.05).

Results:

In both the maxilla and mandible, the prevalence of WSLs was significantly higher in the Transbond XT group than in the G-CEM group (P = 0.01). The difference in frequency of WSLs between the maxilla and mandible was not significant within each group (P > 0.05). Tooth #22 had the highest frequency of WSLs (11.4%) in the Transbond XT group, while teeth #12 and #36 had the highest frequency of WSLs (2.9%) in the G-CEM group. The difference in frequency of WSLs was not significant between males and females (P > 0.05).

Conclusion:

Bracket bonding with G-CEM fluoride-releasing cement significantly reduced the development of WSLs around orthodontic brackets.