bluuebunny/crossref_metadata_2025 huggingface dataset:
Fiscalité : revue de littérature juridique à l’usage de l’histoire ancienne
Authors: Girardin Michaël
Published: June 2023

Alors que la fiscalité devient de plus en plus un objet d’enquête en histoire ancienne, il s’avère que sa technicité constitue un frein aux débats. À l’aide d’une recherche menée dans les travaux de juristes, de fiscalistes et de psychologues de l’impôt, le projet est ici de proposer un aperçu des complexités que rencontrent les chercheurs dans ces disciplines à définir ce qu’est l’impôt dans la langue française. Les définitions souvent retenues sont inopérantes quand elles sont appliquées à l’histoire ancienne. Un glossaire final propose des réflexions pour enrichir les travaux menés sur la fiscalité antique.
La Matrice du modèle d’affaires responsable : un outil pour la transformation socioécologique
Authors: Pepin Matthias , Tremblay Maripier , Audebrand Luc
Published: June 2023

Les outils de modélisation d’affaires sont utilisés depuis plusieurs années dans les formations universitaires et les programmes d’incubation pour aider les étudiants et les entrepreneurs en démarrage à développer leurs projets d’entreprises. Plus récemment, la triple exigence économique, sociale et environnementale du développement durable a été intégrée aux critères de réussite en affaires. Ainsi, plusieurs outils de modélisation d’affaires « durables » ont vu le jour, ces derniers étant plus ou moins adaptés aux contextes de l’éducation et de l’accompagnement à l’entrepreneuriat. Cet article présente la Matrice du modèle d’affaires responsable (MMAR), un outil qui vise à aider les étudiants et les entrepreneurs en démarrage à se poser les bonnes questions pour développer des modèles d’affaires en accord avec les exigences de la transformation socioécologique. L’outil s’inscrit dans une approche de compromis et intègre à la fois une perspective financière et des éléments normatifs liés à la durabilité, incluant le bien-fondé de l’entreprise, la prise en compte d’une diversité de parties prenantes et leur gestion, de même que les retombées positives et négatives de ses activités.
Repenser des modèles d’affaires durables autour de ressources naturelles oubliées : leçons de la filière chanvre textile
Authors: Parigot Julia , Carton Guillaume
Published: June 2023

L’industrie textile est décriée pour ses pratiques polluantes. Pour lutter contre ce fléau, des entrepreneurs au service de la durabilité cherchent à remplacer la fibre de coton jugée polluante par la fibre de chanvre, jugée plus écologique mais non génératrice de valeur. Pour cela, ils recréent la filière chanvre à usage textile, aujourd’hui quasiment disparue en France. Pour comprendre comment elle se construit, nous étudions comment la coopérative VirgoCoop a réintroduit le chanvre textile en Occitanie. Placée à la périphérie de la filière, la coopérative l’active en cherchant à valoriser la nouvelle ressource naturelle, puis en recréant la filière du chanvre à usage textile en réunissant les acteurs et compétences nécessaires. Nous montrons que cette transformation a des impacts sur les acteurs de la filière qui doivent créer de nouveaux modèles d’affaires durables.
Sustainable Entrepreneurs: How to Propose a Differentiation Strategy Based on Your Venture Mission
Authors: Letierce Clara , De Miguel De Blas Marta
Published: June 2023

Les questions de durabilité sont de plus en plus pressantes et l’intérêt croissant qu’elles suscitent a conduit à une prolifération de projets entrepreneuriaux revendiquant un impact social et environnemental positif. Si cette profusion légitime l’existence de missions stratégiques fondées sur la durabilité, elle limite également leur capacité à trouver un positionnement original. Cela peut s’avérer problématique, car la différenciation est nécessaire pour attirer les ressources et obtenir ainsi un avantage concurrentiel. En procédant à une analyse qualitative de projets entrepreneuriaux durables dans l’industrie du café sur la plateforme Kickstarter, cet article vise à examiner les missions formulées par les entrepreneurs pour différencier leurs activités. Les résultats permettent de proposer une typologie des missions de différenciation et contribuent ainsi à une meilleure compréhension de l’entrepreneuriat durable dans la pratique.
Memorio, première plateforme au monde de réhabilitation et de vente de monuments funéraires de seconde main
Authors: Lesage Xavier , Hilligot Pierre , Castaing Hadrien
Published: June 2023

Dans cet entretien, Pierre Hilligot et Hadrien Castaing présentent leur jeune pousse nantaise, Memorio, la première plateforme au monde de réhabilitation et de vente de seconde main de monuments funéraires. Grâce à leur place de marché my-memorio.com , ils ambitionnent de donner à chacun la possibilité d’offrir dignement, simplement et de manière abordable, une dernière demeure à leurs proches. Ils expliquent comment ils contribuent à organiser un marché de seconde main du funéraire et comment ils assurent un impact qui est à la fois économique, social et écologique auprès de leurs clients comme de toutes les parties prenantes du secteur d’activité.
Entrepreneurs, Activism and Sustainable Development
Authors: Stål Herman
Published: June 2023

Cet article conceptuel aborde le paradoxe qui se produit lorsque l’entrepreneuriat est combiné avec le développement durable. On peut utiliser la notion de durabilité forte pour résoudre ce paradoxe. La durabilité forte s’appuie étroitement sur ce que les sciences naturelles nous disent de l’état du système terrestre et de ses fonctions. Il s’agit d’une manière particulière de comprendre les besoins des générations futures qui affirment qu’elles auront au moins besoin que l’intégrité du système terrestre soit préservée pour répondre à leurs besoins. Seul ce principe permet et soutient un développement social et économique fiable. Par conséquent, l’approche fondée sur la durabilité forte exige que la notion d’intégrité du système terrestre soit prioritaire dans toute prise de décision sociétale, y compris celle des entrepreneurs. L’article se termine par une discussion sur les différentes façons dont les entrepreneurs peuvent intégrer cette réflexion sur les systèmes terrestres dans leurs activités commerciales.
L’écriture de science-fiction pour penser le monde et œuvrer pour la durabilité
Authors: Reboud Sophie
Published: June 2023

La nécessité de se projeter dans un avenir incertain et le manque de point de repère pour ce faire plongent les étudiants en entrepreneuriat dans une perplexité qui les conduit à être très conservateurs dans leurs projets. Nous avons utilisé l’écriture de nouvelles de science-fiction afin de les aider à sortir de cette prudence et faire appel à leur imagination pour penser les besoins des citoyens de demain. Le détour par l’imaginaire et la fiction 1 a permis d’envisager un monde radicalement nouveau, et de réfléchir, au sein de ce monde, à la création d’une activité en adéquation avec ce futur 2 .
Strengthening sustainable entrepreneurship through impact management in start-up support programmes
Authors: Fichter Klaus , Widrat Alexandra
Published: June 2023

Les programmes d’aide à la création d’entreprises représentent un instrument essentiel pour promouvoir un entrepreneuriat durable. Ils accélèrent et encouragent le développement de solutions durables innovantes. Toutefois, à ce jour, peu d’analyses ont été effectuées pour déterminer si ces programmes de soutien concrétisent ce potentiel et contribuent à la durabilité environnementale et sociale au-delà des effets économiques. Ce travail décrit les approches et les méthodes que des programmes de soutien aux start-up peuvent employer pour mettre en place des processus de gestion de l’impact correspondant à leurs stratégies respectives et créant de la valeur pour les équipes accompagnées. En outre, il fournit des recommandations d’action qui peuvent aider les soutiens aux start-up à instaurer une culture d’évaluation et de gestion de l’impact axée sur la durabilité dans le système de soutien aux start-up au sens large.
Le maniement du lien d’emprise dans le transfert : perspectives psychothérapeutiques et cliniques pour les auteurs de violences conjugales
Authors: Pelladeau Élise
Published: June 2023

Après avoir mené une revue de littérature sur les spécificités du lien d’emprise dans la clinique des violences conjugales, nous proposons, dans cet article, de nous interroger sur le maniement du transfert en psychothérapie en milieu carcéral. Pour ce faire, nous nous appuierons sur le cas d’un patient incarcéré pour homicide sur sa femme. Nous mettrons en perspective les quatre temps d’emballement du lien conjugal violent avec les enjeux transférentiels, ce qui nous permettra de dégager des pistes psychothérapeutiques.
Leçon inaugurale. Les conditions de la paix mondiale
Authors: Hollande François
Published: June 2023

La paix est fragilisée par ceux qui veulent un ordre international autoritaire. Le conflit en Ukraine en est une des conséquences, obligeant l’Europe à réfléchir sur son avenir et à son positionnement dans les affaires du monde. Dans le désordre actuel, l’opinion publique pourrait bousculer les tenants d’une approche totalitaire. La sécurité et la transition énergétiques européennes sont les deux faces de la même médaille
Le « système international » et les révisionnistes
Authors: Frachon Alain
Published: June 2023

La Chine et la Russie veulent remettre en cause le système international jugé trop « occidentalo-centré » et dominé unilatéralement par les États-Unis. Certes, celui-ci fonctionne mal depuis déjà trop longtemps, mais les intentions des « révisionnistes » semblent conforter leurs ambitions et la pérennité de leurs régimes.
Pour un apprentissage de la sécurité globale
Authors: Badie Bertrand
Published: June 2023

La sécurité nationale est en pleine mutation pour devenir globale. La compétition interétatique est désormais bousculée avec de nouveaux acteurs et des pratiques différentes. Cela oblige à revoir nos schémas de compréhension pour une gouvernance différente, remettant en cause l’idée de souveraineté.
La paix par la dissuasion ?
Authors: Tertrais Bruno
Published: June 2023

La question de savoir si la dissuasion nucléaire évite la guerre reste d’actualité. De fait, il n’y a pas eu de conflits majeurs entre les États dotés de la bombe, mais cela ne signifie pas forcément que ce risque ait disparu. La dissuasion reste imparfaite et fragile, et néanmoins nécessaire à la paix.
Le multilatéralisme et la paix
Authors: Ripert Jean-Maurice
Published: June 2023

Les désordres du monde s’aggravent avec une remise en cause du multilatéralisme. Toutefois, l’ONU n’a pas failli et a été assez efficace malgré de multiples défaillances. Il convient maintenant de conforter l’ONU face aux critiques de certains États voulant remette en cause une organisation qui reste indispensable.
La paix et les défis de sécurité nationale
Authors: Bouillon Stéphane
Published: June 2023

La France doit faire face à de nombreux et nouveaux défis de sécurité nationale alors que des compétiteurs mal intentionnés veulent balayer les valeurs que nous défendons. Il faut donc anticiper et élargir nos capacités pour répondre aux crises de demain en ayant le courage de nos convictions.
The ‘New International Order’ from a Gulf Perspective
Authors: Sager Abdulaziz
Published: June 2023

Les États-membres du Conseil de coopération du Golfe (CCG) se sentent directement concernés par les fractures du monde accélérées par la guerre en Ukraine. L’objectif du CCG est de contribuer à la stabilité mondiale au carrefour du « Sud global » en dialoguant avec tous les acteurs internationaux.
Rester la première puissance mondiale : les États-Unis face à la Chine
Authors: Étienne Philippe
Published: June 2023

Les États-Unis se retrouvent désormais en concurrence avec la Chine dont les ambitions ne cessent de se développer. Le dilemme pour Washington est de conserver sa place de première puissance mondiale en trouvant une voie compliquée évitant la confrontation mais en préservant ses intérêts.
Le reste contre l’ouest ?
Authors: Girard Renaud , Petros Olivier
Published: June 2023

Certes l’Occident n’est ni uniforme, ni totalement responsable des désordres du monde. Et pourtant, il est violemment remis en question par les leaders du « Sud global », dont la Chine. Il importe donc de mieux agir et de construire une dynamique d’affirmation en retrouvant une part de fierté.
Guerre économique et multilatéralisme : un conflit majeur se dessine-t-il ?
Authors: Mathonniere Julien
Published: June 2023

La fragmentation du monde, accéléré par la guerre en Ukraine, se traduit aussi sur le plan économique, exacerbée par la volonté chinoise de remettre à plat les mécanismes internationaux actuels. Cette confrontation pose la question de son évolution avec le risque d’un conflit majeur, mais serait alors contre-productif.
La France et l’Otan (1/2). La France de la Quatrième, pilier de l’Otan
Authors: Franc Claude
Published: June 2023

La France a joué un rôle majeur dans la montée en puissance de l’Otan, sous la IV e  République. De fait, elle était le principal pilier militaire européen. Ainsi, le maréchal Juin, AFCENT , disposait d’un commandement opérationnel majeur sous les ordres du SACEUR . Mais la question nucléaire allait accroître les difficultés.
Sergueï Lavrov en Amérique latine : des symboles et une stratégie
Authors: Drouhaud Pascal
Published: June 2023

La visite en Amérique latine de Sergueï Lavrov (ministre russe des Affaires étrangères) au mois d’avril démontre à la fois l’intérêt du Kremlin pour la région et la volonté des pays visités de remettre en cause la gouvernance mondiale dominée par les États-Unis.
Thérapies du deuil : établir des dialogues entre vivants et morts pour transformer leurs relations
Authors: Perichon Laura
Published: June 2023

Nous nous appuierons ici sur une vision du processus de deuil en deux temps distincts, celui de l’adaptation à un quotidien où le défunt n’est plus et celui de l’évolution du lien avec le défunt. Ce second temps correspond à la dimension relationnelle du deuil et renvoie à tout ce qui peut rester en suspens, au cours du temps, entre les vivants et leurs proches défunts. Certaines thérapies du deuil invitent ainsi les personnes endeuillées à des formes d’interactions et de dialogues avec le défunt afin d’offrir la possibilité de pouvoir dire, sentir, faire ou entendre ce qui importe à chacun. Grâce à la mise en place d’interactions significatives entre vivants et morts, tant leur lien que les images du défunt se modifient, conduisant à davantage d’apaisement. Par ailleurs, ces interactions peuvent venir soulever la question du mode d’existence du défunt, certains considérant qu’il est constitué de souvenirs et de représentations et d’autres estimant qu’il poursuit une existence invisible et autonome par-delà la mort.
Appréhender le diagnostic de burn out en tant que thérapeute systémicien·ne : observations et réflexions
Authors: Wirion Michèle
Published: June 2023

Face au nombre de plus en plus élevé de personnes diagnostiquées « en burn out », il me semble essentiel de pouvoir développer une compréhension authentiquement systémique de ce à quoi renvoie ce diagnostic. Je commence donc dans cet article à décrire les dynamiques sociétales qui constituent le contexte de ce diagnostic récent. Après avoir analysé brièvement le contexte d’une société de plus en plus rapide et qui fonctionne sous l’impératif de la performance et du rendement, je montre que les patients épuisés ont souvent depuis leur famille d’origine déjà un passif de dons sans retour, en étant parentifiés en tant qu’enfants, et que la question de la reconnaissance est cruciale dans leur histoire. Je montre également que cette question de la reconnaissance est importante dans le traitement du patient épuisé.
Risk Factors for the Development of Fellow Eye Horseshoe Retinal Tears Following Horseshoe Retinal Tear in the Presenting Eye
Authors: Peng Enoch T. , Parvus Matthew N. , Yu Hannah J. , Laswell Stephen M. , Pearce William A. , Fan Kenneth C. , Major James C. , Brown David M. , Wykoff Charles C. , Patel Sagar B.
Published: June 2023

Background:

This study investigated factors associated with fellow eye horseshoe retinal tear (HST) development in consecutive patients with a presenting eye HST.

Materials and Methods:

Medical records were reviewed for patients with initial HSTs between 2015 and 2017 and 24 factors were analyzed. Logistic regression was used to assess factors associated with fellow eye HST development.

Results:

In total, 242 patients with an HST were identified with mean follow-up of 68.3 months. Four associations with fellow eye HST development were identified: (1) presence of fellow eye lattice degeneration, (2) subsequent presenting eye HSTs, (3) fellow eye vitreous hemorrhage at presenting eye HST occurrence, (4) OCT-determined stage 3 fellow eye posterior vitreous detachment at presenting eye HST occurrence.

Conclusion:

Four clinical findings associated with fellow eye HST development following presenting eye HST were identified. These factors may be important considerations during management patients with HST.

[
Ophthalmic Surg Lasers Imaging Retina
2023;54:338–345.]
University Students' Foreign Language Learning Behaviours in the Online Environment
Authors: Maican Maria-Anca , Cocoradă Elena
Published: June 2023

Given that the COVID-19 pandemic has strongly impacted students' learning experiences, the present research aims to reveal some of the challenges brought by the online foreign language classes in higher education and to show a pattern of relationship exists between individual and contextual factors, and students' behaviours during these classes. The study was conducted in a university where foreign languages (FLs) are a compulsory part of the curriculum at the undergraduate level. The authors analysed individual differences, such as personality traits, FL learning motivation, out-of-class language learning, perceived usefulness of elearning platform resources, self-perceived FL proficiency, and FL grade as independent variables, and also measured FL enjoyment, FL anxiety, stressors that exist and coping behaviours as mediators. The integration of above-mentioned factors in the analysis of online learning can contribute to a better understanding of the learning process in this environment, to enhance students' positive behaviours, diminish the negative ones, and improve learning outcomes.
Decolonizing the Curriculum in Higher Education
Authors: Woods Zuleka R. , Anakok Isil , Clinedinst Shania , Lee Shernita
Published: June 2023

In order for educational institutions to attain social justice and equity, we must challenge persistent and normative whiteness in higher education curriculum to include the voice of students of color. The dominant Eurocentric narrative present in higher education curriculum demands inclusive pedagogy in classrooms that create space for students to share their funds of knowledge and experience inclusion within an atmosphere of belonging. This chapter utilizes qualitative methodologies to decolonize the curriculum and craft such an inclusive space. It argues for ways to reshape knowledge production by encouraging diverse forms of learning and critical pedagogy that rest on a foundation of a multicultural curriculum. This decolonizing process must become an essential part of critical pedagogies within higher education curriculum that includes all cultures and knowledge systems in ways that recognize and frame students' funds of knowledge within the inclusive space of the classroom.
Battle Royale
Authors: Gupta Potnuru Rama Krishna , Kumar Sunil , Gade Surendar
Published: June 2023

The case narrates a comparative study of Battle Royale: Harley-Davidson v/s Triumph. It is of their product launch and marketing strategies used by Harley-Davidson and Triumph, two leading brands in the Indian premium motorcycle segment. For the purpose of this study, data were gathered from both primary and secondary sources. This study used secondary sources dominantly for extracting related information of Harley-Davidson and Triumph brands. Secondary sources include company reports, their promotional events, social media, news reports, etc. The author of the case also interacted with users of these two brands. Feedback from these brand users was discussed in the case explicitly. This case was discussed with UG and PG students in a classroom. It helped them to understand branding strategies of these two brands specifically.
Camouflaging Marketing
Authors: Tyagi Shenki , Kumar Ashish , Sarna Shilpi
Published: June 2023

Content marketing is an eye opener to various customers and prospecting consumers to give them the viewpoint of understanding and knowledge. Consumers are educated due to the awareness of digital media and easy access to it. In today's era, this digital platform is also taking advantage of camouflaging the content as per their viewpoint, which needs to be put at the forefront. Today shoppers' various reports show that these associations are vulnerable to acts of neglect and may take on substitute freak procedures like a disguise. This case study makes salient contributions by integrating various portals of digital marketing with the concept of camouflaging and through which channel consumers' interest gets hampered. Every organization should use digital platforms with their uniqueness intact so that it should not be driven to another meaning of a message. Digital marketing is a spokesperson which is one way so it should be guided and directed with objectivity.
Strategic Alliance Between Toyota and Suzuki
Authors: Sarangal Ruhi , Kumar Ashok , Bathla Devesh , Chauhan Prashant , Dangwal Aarti , Mehta Mankaj
Published: June 2023

It was in the year 1977 in October that the Toyota Motor Corporation entered India. Toyota entered into a joint venture with the Kirloskar Group, therein establishing Toyota Kirloskar Motor Private Limited. Carving their place in the Indian automobile sector, Toyota has successfully carved its place known for their dependability and durability likewise as it was globally. In India, the cars like Corolla Altis sedan, Innova Crysta premium MPV, and the Fortuner premium SUV are one of the most popular models that run successfully. In addition to being the largest automobile manufacturer in the world, the Toyota camp has always been renowned for the cutting-edge technology and brilliant production practices it employs in its manufacturing operations. Toyota has always been a path finder propagating and manufacturing eco-friendly automobiles. Over the years Toyota has developed and mastered developing incredible and refined power plants, which empowers it to deliver tremendous power while minimising fuel consumption.
Bikaner as a City of Happiness
Authors: Jain Trilok Kumar , Anand Neeraj
Published: June 2023

This is a case study on the relevance of the culture and heritage of a city to overall happiness and comfort of the citizens. India ranks at 136 in the World Happiness Ranking as per 10th World Happiness Report 2022. A happy city is a city that focuses on building infrastructure for get-togethers, interactions, parties, and socializing of the residents. This case study takes a look at the evolution of culture of Bikaner city and identifies key elements of this culture. It is located in Thar Desert and has extreme climatic conditions. It has geographical disadvantage but has many distinct advantages also. The city has been able to maintain its unique identity and culture despite the changes and pandemic the world has undergone over the decades. This city has been able to preserve its heritage and its deeply rooted traditional values. The authors have highlighted unique cultural characteristics of the city and also raised some concerns to be addressed to develop it as a preferred destination while developing it as modern city of happiness. The case study leaves many questions to ponder.
A Study of Alternative Materials for Sail Mast of Sandeq
Authors: Alamsyah Alamsyah , Arruan Josh Fortuna , Arifuddin Andi Mursid Nugraha , Pawara Muhammad Uswah , Mahmuddin Faisal
Published: June 2023

Sandeq is a type of outrigger sailing boat used by Mandar fishermen to catch fish as well as a mode of transportation between islands. Sandeq boat has a mast made of bamboo that is called pattung. Recently, the raw material for the mast is very rare, so it is necessary to find alternative materials with equal quality and strength. In this study, numerical simulations were carried out by modeling masts made of aluminum, fiberglass and bamboo using Finite Element Method (FEM). The workload used is the maximum load of the main sail. The results showed that alternative materials that can replace bamboo are aluminum 6061 (AL 6061) and fiberglass (FRP). By applying the caseload on the Sandeq mast, it is found that the AL 6061 experiences stress with 78 MPa, and FRP experiences stress with 150 MPa. Both of these materials are suitable for use as an alternative material for the Sandeq mast with a safety factor SF ≥ 5.
Optimizing Automatic Flight Condition Recognition through a Multi-Strategy Machine-Learning Based Approach
Authors:   Politecnico di Milano, Villa Eugenia ,   Leonardo Helicopters, Baldi Andrea , Zinnari Francesco , Coral Giovanni , Cazzulani Gabriele , Tanelli Mara , Mariani Ugo , Mezzazanica Daniele
Published: June 2023

In this paper, flight demonstration of the feasibility of an optimal rotor blade designed by JAXA for high-speed helicopters and the single-rotor lift-offset technology using flap differentials on the fixed-wing is reported, conducted using a 1/7 scale model helicopter named HARIOS. Flight speed of the model helicopter was measured by equipping a pitot tube and static pressure ports, and the power consumption during forward flight was obtained by summing the power consumption of various motors. These results were then compared. Although the flight demonstration was limited to an advance ratio of 0.4, it was observed that the acceleration of the aircraft increased when equipped with JAXA's optimal blade, and a significant reduction in power consumption occurred when applying the lift-offset technique. This marks a milestone in the test-flight verification for the two technologies, which had previously been investigated through wind tunnel tests and Computational Fluid Dynamics (CFD) simulations. With this flight demonstration, a significant step towards validating the effectiveness of the JAXA optimal rotor blade design and single-rotor lift-offset technology has been taken.
Concerns with using Machine Learning in Airworthiness Applications
Authors:   US Army DEVCOM AvMC, Carter H. ,   Modern Technology Solutions Inc. MTSI, Rupert Jason , Chan Alexander , Vinegar Chris
Published: June 2023

Machine Learning is seeing accelerating growth in its use across a wide swath of applications ranging from wall mounted thermostats to automobiles. Even the historically conservative aviation industry is beginning to explore the use of machine learning in benign applications, e.g., predictive health monitoring, and beyond, including plans for flight critical applications such as navigation solutions. With the potential push of machine learning into flight critical applications, airworthiness practitioners concerned with software should ask: are there concerns with using machine learning in flight critical airworthiness applications? The goal of this paper is to answer this question with a resounding 'yes', by identifying some specific concerns. These concerns include data-driven development, uncertain (statistical/probabilistic) output, and extending to functional behavior, repeatability, non-rigorous development, and specific deployment environments. Beyond just identifying the concerns, this paper proposes approaches to build justified confidence in the use of machine learning in flight critical applications through combined evaluation of performance assurance, development assurance, and mitigations.
A Comparison of Traditional And Vuichard Vortex Ring State Recovery Techniques Using On-Line Simulation
Authors:   Georgia Institute of Technology, Sotiropoulos-Georgiopoulos Eleni ,   Federal Aviation Administration, Johnson Charles , Payan Alexia , Mavris Dimitri
Published: June 2023

From 2008 to 2021, 48 helicopter accidents have involved Vortex Ring State (VRS) encounters in the United States. Vortex Ring State is still a misunderstood phenomenon, which is challenging to identify and recover from. Currently, two competing recovery techniques are taught to pilots: the Traditional and the Vuichard recoveries. This paper presents initial steps in comparing these techniques. A first approach relies on online scenario-based simulations in an S76 flight simulator to determine pilots' decision-making process during a VRS encounter and their ability to recover. These scenarios are designed based on an analysis of VRS accident reports from the 13 biggest helicopter-operating countries.
Micro-Mechanics Based Gear Tooth Contact Fatigue Analysis
Authors:   Sikorsky a Lockheed Martin Company, Xu Biqiang , Hansen Bruce
Published: June 2023

Microstructure-based component life prediction (CLP) tool is validated through gear contact fatigue test and used to create contact fatigue S-N curve. Trade off study of different micro-material structures, grain size, surface roughness, and residual stress, is conducted to understand the impact on fatigue life. The results can be used as gear material design guidance to save expensive cost of fatigue test.
Development of a Machine-Learned Cruise Guide Indicator for Rotorcraft
Authors:   DoD HPCMP PET/GDIT, Boyer Mathew ,   Oak Ridge National Laboratory, Brewer Wesley ,   DEVCOM AvMC, Finckenor Jeff , Brackbill Chris , Martinez Daniel , Wissink Andrew
Published: June 2023

This paper presents a machine-learned virtual cruise guide indicator (vCGI) for Chinook helicopters. Two temporal neural networks were trained and evaluated on measured data from 55 flight tests, one for the fore rotor and another for the aft rotor, to predict a vCGI value, which protects 23 components from fatigue damage during steady-state conditions. Three different classes of machine learning architectures were evaluated for prediction of the vCGI from time sequences: a temporal convolutional neural network with 1D dilated causal convolutions, a long short-term memory recurrent neural network, and an attention-based transformer architecture. The final average model accuracy on unseen flight data is currently greater than 93% for CGI values which could result in fatigue damage and 90% for normal operation CGI values. Model accuracy was improved through a series of advancements in: (1) selection of optimal training data using temporal collective variables and unsupervised learning, (2) dataset augmentation with maximum-entropy temporal collective variables, and (3) implementation of a mixture-of-experts classification-regression approach using an adversarial classification approach to assign maneuver labels. The results are presented for each advancement in model development along with lessons learned in training machine learning models on real-world, time-dependent rotorcraft data.
Sun, alcohol, and skin lesions
Authors: Poggiali Erika , Vercelli Andrea
Published: June 2023

A 65-year-old man presented to the emergency room with blistered not itching skin lesions on the dorsal surface of both hands, which developed recurrently after exposure to sun and solved spontaneously with scarring. The patient had a history of hypertension, diabetes mellitus type 2 and hypercholesterolemia. His medications included ramipril, metformin, simvastatin, and acetylsalicylic acid. He denied smoke, but he used to consume a large amount of alcohol (1 Lt of red wine daily). His body mass index was 29 (overweight). Blood exams revealed: altered glucose metabolism (fasting and post-prandial blood glucose, respectively 172 mg/dL and 267 mg/dL), macrocytosis (mean cell volume 100.6 fL), increased transaminases (AST 62 U/L and ALT 79 U/L, normal value 10-37) and gamma-glutamyl transferase (GGT 255 U/L, normal value 7-40), and an iron assessment as follows: serum ferritin 2234 ng/mL, transferrin saturation 40%, serum iron 138 mcg/dL. Hepatitis C, hepatitis B, and HIV were excluded. Autoimmune screening was negative. Point of care ultrasound documented a grade 3 liver steatosis.
Cardiopulmonary resuscitation by law enforcement agents in Spain: lessons from a mixed methods case study
Authors: P´erez-Regueiro Irene , Carcedo-Argüelles Lucía , Fernández Fernández Elena , García Fernández José Antonio , Lana Alberto
Published: June 2023

Much of the law enforcement work takes place close to the public, often arriving at the scene before medical services in the case of victims of out-of-hospital cardiac arrest. If properly trained, these early care procedures can be powerful mechanisms to improve survival. This paper describes a case of out-of-hospital cardiac arrest assisted by law enforcement officers on the public highway in Asturias-Spain. In addition, a qualitative study was carried out to learn about the experience of the officers during the intervention, their willingness to act in similar emergencies, as well as to gather information about their training and knowledge of basic life support. The case was successfully resolved; however, some errors in the spontaneous execution of the chain of survival and the officers’ statements prompted some recommendations for the mobilization, training and staffing of law enforcement agencies in Spain.
Comments on “Why do emergency department clinicians miss acute aortic syndrome? A case series and descriptive analysis”
Authors: Vercelli Andrea , Berardi Eleonora , Poggiali Erika
Published: June 2023

Dear Editor,
In the recently published article by McLatchie et al., the authors state that emergency clinicians may miss acute aortic syndrome (AAS) by not considering it as a possibility, being falsely reassured by atypical or resolved symptoms, or mistaking it for other more common conditions.1 The authors emphasise the importance of always considering AAS in the differential diagnosis of chest, back or abdominal pains, collapse, perfusion deficits or neurological compromise and suggest a risk stratification scoring system such as ADD-RS in combination with D-dimer to standardise the approach and help physicians discern which patients to scan. [...]
Authors’ response to Comments on “Why do emergency department clinicians miss acute aortic syndrome? A case series and descriptive analysis”
Authors: Reed Matthew J. , McLatchie Rachel , Wilson Sarah , Ticehurst Francoise , Easterford Kathryn , Alawiye Salma , Cowan Alicia , Gupta Aakash
Published: June 2023

Dear Editor,
We thank Vercelli et al.1 for their comments on our paper: Why do emergency department clinicians miss acute aortic syndrome? A case series and descriptive analysis.
We fully agree with the authors, that investigating the heart and aorta using POCUS may allow for an earlier diagnosis and therefore more expedient treatment of a patient with acute aortic syndrome (AAS). We would also agree with the authors that POCUS is a point of care test with good specificity for the detection of AAS (i.e., it may be good at ruling in the diagnosis) but has poor sensitivity for the detection of AAS (i.e., it is not good at ruling out the diagnosis).[...]
Frailty: future prospectives in rehabilitation medicine
Authors: Dionyssiotis Yannis , Masiero Stefano , Maccarone Maria Chiara , Prokopidis Konstantinos , Dzhafer Nigyar , Matzaroglou Charalampos , Tsekoura Maria , Panayotov Kiril , Papathanasiou Jannis
Published: June 2023

A Correction has been published | View 
Modern rehabilitation is based on the International Classification of Functioning, Disability and Health (ICF). We will discuss this Classification process in frailty. Frailty is defined as a condition of reduced functional reserve, a state of vulnerability that involves poor recovery of homeostasis and increased susceptibility to stressor mechanisms, with consequent difficulty in returning to the previous condition of balance. Rehabilitation of frailty is reported in the ICF, although, its consensus is not sufficiently addressed due to its recent identification and the limited available information regarding how it should be formulated. Thus, the aim of the present article is to present the current evidence-based rehabilitation strategies applied in management of frailty.
Mineral water inhalations for bronchial asthma: a meta-analysis
Authors: Fesyun Anatoliy D. , Solimene Umberto , Grishechkina Irina A. , Lobanov Andrey A. , Andronov Sergei V. , Popov Andrei I. , Yakovlev Maxim Yu. , Ivanova Elena , Sanina Natalia P. , Reverchuk Igor V. , Maccarone Maria Chiara , Masiero Stefano
Published: June 2023

Bronchial asthma (BA) is a common disease that contributes significantly to the incidence rate and death rate worldwide. A widespread treatment method is the use of inhalations of mineral waters, with conflicting information about their effectiveness. Purpose of the study was to assess the generalized effect power of the course of inhalations of mineral waters on the disease progress in patients with BA. A search of randomized clinical studies in data bases Pubmed, EMBASE, ELibrary, MedPilot amd CyberLeninka, according to PRISMA strategy, published between 1986 and July 2021. Standardized difference of mean values and their 95% of CI were employed for calculation using the random effects model. The meta-analysis drawing on 1266 sources included 14 studies, with 2 of them being randomized controlled clinical studies, including the results of the treatment of 525 patients. All 14 articles contain a conclusion that the inhalation of mineral water has a positive effect on the course of the disease in patients with BA. The analysis demonstrated that the group of patients after mineral water inhalations, compared with the control group, showed improvement of forced expiratory volume (FEV1), expressed both in % of the norm and in liters. The standardized difference of mean values FEV1 (%) (Hedge's g) was 8.2 (95% CI: 5.87 – 10.59; 100%), FEV1 values (liter.) (Hedge's g) was 0.69 (95% CI: -0.33-1.05). A significant heterogeneity of the results of individual studies was found (Q=124.96; tau2 = 14.55, I2 = 69.13%, p<0.0001 and Q=2.35; tau2 = 0, I2 = 0%, p<0.0001). Patients with mild, moderate, and hormone-dependent BA with a controlled and partially controlled disease course, after mineral water inhalations, compared with the control group, demonstrated a statistically significant decrease in the frequency and intensity of the cardinal symptoms of BA and improvement of FEV1.
Grit, Athlete Burnout, and Well-Being in Female Collegiate Student-Athletes
Authors: Gray Haleigh M. , Moran Ryan N. , Elder Elizabeth , Wilkerson Amanda , Chaney Elizabeth , Gilmore-Childress Ginger , Wallace Jessica
Published: June 2023

Context

Collegiate student-athletes are faced with significant athletic and academic demands, causing a substantial amount of stress, which can lead to athlete burnout. Problematically, little research has been done to find ways to prevent or mitigate the effect of athlete burnout in collegiate student-athletes. Grit is one characteristic that they could use as a coping mechanism to reduce the effects of burnout and to improve overall well-being.

Objective

To determine if grit had a main or buffering effect on well-being and athlete burnout in female collegiate student-athletes.

Design

Cross-sectional study.

Setting

National Collegiate Athletics Association Division I institution.

Patients or Other Participants

A total of 174 female collegiate student-athletes.

Main Outcome Measure(s)

The Grit Scale, Athlete Burnout Questionnaire, and Warwick Edinburgh Mental Well-Being Scale were used to assess grit, athlete burnout, and well-being.

Results

Grit was a significant negative predictor for physical and emotional exhaustion (F1,172 = 28.25, P < .001), a reduced sense of accomplishment (F1,172 = 20.40, P < .001), and sport devaluation (F1,172 = 40.32, P < .001). Additionally, grit was a significant positive predictor of well-being (F1,172 = 29.68, P < .001). The moderated regression with grit did not reveal significant results.

Conclusions

We provide new information on considerations for reducing athlete burnout and improving well-being in female collegiate student-athletes. Athletic trainers and sports medicine stakeholders should consider intervention strategies for improving grit to mitigate athlete burnout and diminished well-being while continuing to explore their effectiveness.
Glimepiride Compared to Liraglutide Increases Plasma Levels of miR-206, miR-182-5p, and miR-766-3p in Type 2 Diabetes Mellitus: A Randomized Controlled Trial
Authors: Scherbak Nikolai N. , Kruse Robert , Nyström Thomas , Jendle Johan
Published: June 2023

Background: Diabetes is a chronic disease with several long-term complications. Several glucose-lowering drugs are used to treat type 2 diabetes mellitus (T2DM), e.g., glimepiride and liraglutide, in which both having different modes of action. Circulating microRNAs (miRNAs) are suggested as potential biomarkers that are associated with the disease development and the effects of the treatment. In the current study we evaluated the effect of glimepiride, liraglutide on the expression of the circulating miRNAs.Methods: The present study is a post hoc trial from a previously randomized control trial comparing liraglutide versus glimepiride both in combination with metformin in subjects with T2DM, and subclinical heart failure. miRNAs were determined in the subjects’ serum samples with next generation sequencing. Expression patterns of the circulating miRNAs were analyzed using bioinformatic univariate and multivariate analyses (clinical trial registration: NCT01425580).Results: Univariate analyses show that treatment with glimepiride altered expression of three miRNAs in patient serum, miR-206, miR-182-5p, and miR-766-3p. Both miR-182-5p and miR-766-3p were also picked up among the top contributing miRNAs with penalized regularised logistic regressions (Lasso). The highest-ranked miRNAs with respect to Lasso coefficients were miR-3960, miR-31-5p, miR-3613-3p, and miR-378a-3p. Liraglutide treatment did not significantly influence levels of circulating miRNAs.Conclusion: Present study indicates that glucose-lowering drugs differently affect the expression of circulating miRNAs in serum in individuals with T2DM. More studies are required to investigate possible mechanisms by which glimepiride is affecting the expression of circulating miRNAs.
Effect of patient positioning on anesthesiologic risk in endourological procedures
Authors: Vrettos Theofanis , Martinez Begona Ballesta , Tsaturyan Arman , Liourdi Despoina , Al-Aown Abdulrahman , Lattarulo Marco , Liatsikos Evangelos , Kallidonis Panagiotis
Published: June 2023

Objective:

The objective is to compare supine and prone positions in terms of arterial blood gas during lithotripsy endourology procedures in different stages.

Material and Methods:

Cases of during lithotripsy endourology procedures in our department from March to September 2020 were included prospectively. The variables registered were body mass index, age, the American Society of Anesthesiologists (ASA) score, diabetes mellitus, positive end-expiratory pressure (PEEP), FiO2, stone size, stone location, procedural type, position, procedure duration, PaO2, SaO2, PaCO2, pH, and dynamic compliance. PaO2, SaO2, PaCO2, pH, and dynamic compliance were recorded at the beginning of the procedure, 5 min later, 15 min later, and at the end of the procedure.

Results:

Thirty patients in prone position and 30 in lithotomy position were included in this study. Patients in prone position underwent percutaneous nephrolithotomy, and patients in supine/lithotomy underwent retrograde intrarenal surgery or ureteroscopy. Statistically significant differences were found in PEEP, duration, PaO2 at the beginning, SaO2 at the beginning and at the end of the procedure, PaCO2 at the beginning and at minute 5 and pH at the beginning of the surgery. The saturation PaO2 increased significantly on prone position and was statistically significantly better at the end of the surgery.

Conclusions:

Both prone and supine positions were safe regarding anesthesiologic risk and had no clinically relevant differences in terms of individual comparisons in arterial blood gas parameters in static moments of the procedure. Prone position was related to an increase in PaO2 and a drop in PaCO2 gradually from the beginning to the end of the surgery.
Perceptions of testicular cancer and self-examination in the general population of Saudi Arabia
Authors: Alkhayal Abdullah , Alsaikhan Bader H. , Alhajress Ghassan , Alsaghyir Abdullah , Noureldin Yasser A. , Aldraihem Khaled , Alrabeeah Khalid
Published: June 2023

Background:

Although testicular cancer (TC) is the most common malignancy in males between the ages of 18 and 50 years, little effort has been made to increase public awareness about TC and testicular self-examinations (TSEs). Therefore, the aim of this study was to assess the level of awareness of TC and TSEs in the Saudi population.

Materials and Methods:

This study was conducted using a structured questionnaire distributed online through social media platforms. The questionnaire consisted of 11 questions related to TC and TSE. All relevant data were moved into an Excel sheet, and data analyses were carried out using SPSS.

Results:

A total of 849 responses were received. The proportion of respondents who knew any information about TC was 26.5%, with media or the Internet being the most common sources of information (16.3%). In addition, 5.5% of respondents knew how to perform a TSE, although only 4% actually performed TSEs. The patient age group was an independent significant predictor of this knowledge, with a P = 0.031.

Conclusions:

These findings suggest that there is a low level of public awareness and knowledge of TC and TSE in Saudi Arabia, and further efforts should be focused on raising public awareness.
Research on Location Selection of Mobile Communication Weak Coverage Network Based on Hierarchical K-means Clustering Algorithm
Authors: Huang Yuan , Huang Zezhong , Liu Shijun , Lan Liying
Published: June 2023

At present, the problem of weak coverage of mobile communication still exists. Firstly, this thesis determines the scale of the base station and the location of the network with the hierarchical clustering algorithm. Secondly, this thesis also determines the base station coverage with the sector area of the Archimedes screw, the location of the weak coverage point with the discriminative model of weak coverage point, and the angle of the sector with the coverage model of gradient descent method. Finally, this thesis provides better solutions to the weak coverage problem with the propagation model of cluster analysis, and optimizes the site selection with the correction model of the propagation pass loss. Within the certain cost, we aim to increase the volume of coverage business, decrease the time complexity of the model, and improve the efficiency of the site selection.