bluuebunny/crossref_metadata_2025 huggingface dataset:
La gamificación en la educación: evaluación de técnicas y aplicaciones para mejorar la motivación y el compromiso del estudiante
Authors: Castro Benavides Carmen Inés , Chiluiza Mariana De Lourdes , Estévez Borja Paco Joselito , Ulloa Carrillo Carmen Lucrecia , Tanguila Shiguango Sofía Judith
Published: April 2023

Este artículo de revisión tiene como objetivo evaluar técnicas y aplicaciones de gamificación en la educación para mejorar la motivación y el compromiso del estudiante. Para lograr este objetivo, se realizó una revisión sistemática de la literatura en diferentes bases de datos, incluyendo Scopus, Scielo y Latindex. Se seleccionaron artículos de revisión y artículos originales de autores relevantes en los últimos cinco años. Los resultados obtenidos indican que la gamificación puede mejorar el aprendizaje, la motivación y el compromiso del estudiante en diferentes niveles educativos y contextos culturales. Además, se encontró que la gamificación puede ser efectiva en diferentes áreas de conocimiento, aunque se necesitan más investigaciones para determinar su efectividad en diferentes poblaciones de estudiantes. traducir al inglés
Realidad aumentada y modelado 3d aplicado en programas de televisión transmitidos desde los estudios de radiotelevisión de Veracruz-México
Authors: Olmedo López Gregorio , Torrico Irahola Ramiro Alfredo
Published: April 2023

En el ámbito de las Realidades Digitales suelen ser confundidas la Realidad Virtual (VR) con la Realidad Aumentada (AR). Este artículo tiene como objetivo proponer una experiencia de Realidad Aumentada (AR) y Modelado 3D aplicado en programas de televisión transmitidos desde los estudios de Radiotelevisión de Veracruz-México; para ello, se describen las características y el desarrollo de las tecnologías de AR y 3D, así como sus actuales aplicaciones con el uso de las Tecnologías de la Información y Comunicación (TIC). Como resultado se logra diferenciar objetivamente, sin dejar de mencionar, que ambas Realidades pueden desarrollar entornos parcial o totalmente inmersivos, visualmente agradables a la vista del usuario. Igualmente, se clasifica la Realidad Aumentada por su elemento activador del modelado 3D pudiendo ser un código QR, una localización por GPS, reconocimiento de objetos, entre otros, y se logra describir metodológicamente cómo es posible realizar una experiencia multimedia inmersiva con tecnologías AR y 3D en un programa de televisión transmitido en señal abierta, describiendo las diferencias con las cadenas de televisoras comerciales.
Estrategias didácticas para mitigar el impacto ambiental generado por la quema de llantas en desuso como combustible fósil en los trapiches paneleros de la vereda San Isidro del municipio de Ricaurte-Nariño Colombia
Authors: Noguera García Alexander Donald , Velasco Rosero William Fernando , Nariño Ricaurte  c , Edwin Holman Díaz Abahonza
Published: April 2023

Con respecto a Luna (2015). afirma que el proceso de producción de panela ha venido ocasionando impactos negativos al medio ambiente, en  especial en la vereda San Isidro del municipio de Ricaurte Colombia, debido a la quema de llantas, leña, plástico, todo esto como materia prima para su posterior evaporación del jugo de la caña en los trapiches paneleros, ya que al quemar este material solido derivado del petróleo, al desintegrarse con el fuego en la cámara de la combustión produce un proceso químico en el cual el Carbono e Hidrogeno del combustible, reaccionan con el Oxigeno del aire, liberando su energía térmica, gases y material particulado, por lo tanto esta reacción es liberado a través del ducto de la chimenea como humo negro llamado hollín causante de la contaminación del medio ambiente. El presente trabajo busca como estrategia pedagógica disminuir los impactos negativos producidos al medio ambiente implementando estrategias como el desarrollo de un manual de buenas prácticas de manufactura, en cuanto a Vanegas C (2016) afirma que el MBPM permite una producción más limpia que contemple todos los componentes de desarrollo sostenible, con el fin mitigar el impacto ambiental generado por la quema de llantas como combustible fósil en los trapiche, lo cual este manual contiene la descripción de la elaboración de la panela, materiales utilizados para el proceso de la combustión, las norma de bioseguridad, sanitarias, con el fin de brindar seguridad a los operarios, reducción de la contaminación  ambiental y la salubridad de los pobladores.
Estrategias pedagógicas emergentes: Un análisis comparativo de enfoques efectivos en la educación del siglo XXI
Authors: Avilés  Pacha Sara María , Romero Alarcón Joisy Beatriz , Ordoñez León Mildred Monica , León  Solórzano Sofía Elizabeth , Cadena Vásquez Anita Del Carmen
Published: April 2023

El objetivo del presente trabajo fue realizar una revisión sistemática de la literatura sobre las estrategias pedagógicas innovadoras en la educación superior en América Latina. Para ello, se realizó una búsqueda en las bases de datos Scielo y Latindex de artículos publicados en los últimos cinco años. A partir de la selección 20 artículos se identificó que las estrategias pedagógicas innovadoras en la educación superior son un tema de investigación en creciente interés en la región, y que existe una amplia variedad de enfoques y metodologías utilizadas para su implementación. Entre las implicancias prácticas, se destaca la necesidad de formación docente en estas metodologías y la importancia de la evaluación de su efectividad en el aprendizaje de los estudiantes. Los desafíos a futuro incluyen la necesidad de continuar investigando en esta temática para ampliar el conocimiento sobre su efectividad y adaptación a diferentes contextos educativos, así como la necesidad de promover su implementación a gran escala.
New Forms of Interaction between Suppliers and Consumers in the Digital Market Environment
Authors: Kurkova D. N.
Published: April 2023

The purpose of this article is to offer a systematic view of omnichannel as a new environment for interaction of market actors. To solve this problem, the author examines the features of the customer-oriented marketing concept and identifies the contradictions between the increasingly complex consumer behavior and the traditional company's strategies and technologies of the interaction with its customers. The author analyzes omnichannel as a solution that not only optimizes this interaction, but also creates a new technological basis and the environment of this interaction. The article examines the expected benefits, challenges and limitations that companies face when developing omnichannel strategies. Based on the theoretical analysis and own empirical research, the author determines the features of the introduction of omnichannel strategies into the practice of Russian business, and also specifies the directions of future research.
A new prognostic marker in small cell lung cancer: red cell distribution width ratio of hemoglobin
Authors: ÖZTÜRK ERGÜR Figen , ÖZTÜRK Ayperi
Published: April 2023

Aim: The ratio of hemoglobin (Hb) to red cell distribution width (RDW) (HRR) has been defined as an effective prognostic factor in various cancer types. The aim of this study is to investigate the prognostic role of HRR value in small cell lung cancer (SCLC). Material and Method: A total of 1039 patients diagnosed with SCLC between 2010-2021 were included in the study. After exclusion of 199 patients without positron emission tomography-computerized tomography (PET-CT), age, gender, additional disease histories, smoking history, pathological stages, survival status, disease progression times, treatments applied, first hemoglobin obtained after diagnosis, red cell distribution width and ratios, and other laboratory parameters of 840 patients were recorded. The log-rank test and the Cox proportional hazards model were used to identify predictors of mortality. Results: A total of 840 patients were included in the study. The median overall survival (OS) and the progression-free survival (PS) times of the patients were 9 months, and 7 months, respectively. The cut-off value for HRR was determined 0.580 (sensitivity 78.73%, specificity 37.88%). In this study, each one-unit increase in HRR reduces death and survival by 1.6 times detected, and it was revealed that HRR had a statistically significant effect on OS and PS. When the patients were divided into two as limited and extensive disease, there was a statistically significant difference between the groups in terms of OS (12-6 months) and PS (10-6 months), but no significant difference was found in terms of HRR between these two groups. Conclusion: HRR is an easily accessible, inexpensive parameter that can be used as a prognostic marker in patients with SCLC.
Interval Multi-Random Factorial Programming for Coupled Farmland and Water Resources Management -- A Case Study of Songhua River Watershed, China
Authors:   College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, China, Wang N. , Huang C. Z. ,   Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G2R3, Canada, Zhai M. Y. ,   Institute of Circular Economy, Beijing University of Technology, Beijing 100124, China, Cheng G. H. ,   Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China, Wang F. ,   State Key Joint Laboratory of Environmental Simulation and Pollution Control, China-Canada Center for Energy, Environment and Ecology Research, UR-BNU, School of Environment, Beijing Normal University, Beijing 100875, China, Lin L. J. ,   School of Chemical Engineering, Fuzhou University, Fuzhou, 350108, China, Luo B. ,   Institute for Energy, Environment and Sustainability Research, UR-NCEPU, North China Electric Power University, Beijing 102206, China
Published: April 2023

The Songhua River Watershed (SHRW) in China has been challenged by water shortages, water pollution, water leakage, and soil erosion in recent years. In the next few decades, these problems will continue to exist and even worsen, threatening the quality of the regional ecological environment and socio-economic development. These issues must be alleviated through coupled farmland and water resources management (CFWRM) but are challenged by multiple system complexities. To fill this gap, this study developed an Interval Multi-Random Factorial Programming (IMRFP) to eliminate potential problems in SHRW and improve the reliability of the decision support process. A series of systematic CFWRM measures were applied to promote the harmonious SHRW ecological environ¬ment and social economy. For example, due to the significant contribution of agriculture to the regional economy, planting should always be a priority. As a major commercial crop, rice cultivation should be allocated the most irrigation water, followed by corn, potatoes, and soybeans. Therefore, after fully balancing the trade-off between the environment and the economy, policymakers should adopt the most reasonable proposals. Various support policies are needed to fully implement these measures in SHRW. For example, it is suggested to improve and update the construction of the water supply network in the SHRW area and appropriately change taxes and prices to follow the overall crop planting plan. The modeling solution shows that the IMRFP method can systematically optimize the allocation of water resources and farming patterns so that water shortage, water pollution, water leakage, and soil erosion in the SHRW can be alleviated.
Review on MBR Technologies for Emerging Pollutant Removal from Wastewater and Their Associated Antifouling Strategies
Authors:   Faculty of Engineering and Applied Science, University of Regina, Regina, Saskatchewan S4S 0A2, Canada, Zhang P. ,   Institute for Energy, Environment, and Sustainable Communities, University of Regina, Regina, Saskatchewan S4S 0A2, Canada, Young S. ,   Faculty of Engineering and Applied Science, University of Regina, Regina, Saskatchewan S4S 0A2, Canada, Huang W. W. ,   Department of Civil Engineering, University of Calgary, Calgary, Alberta T2N 1N4, Canada
Published: April 2023

It was necessary to reclaim water from wastewater to tackle water scarcity issues. However, it was difficult to treat waste-water for resue purpose through conventinal treatment technologies due to the wastewater contains various emerging contaminants. Membrane bioreactors (MBRs) were promising techniques to reclaim wastewater, which hybrid activity sludge and membrane technol- ogies. Although it was a challenge to eliminate the emerging contaminants efficiently through conventional MBRs due to specific chem- ical structures of these chemicals, more and more novel hybrid MBRs were applied to the removal of emerging contaminants. The evo- lution of MBR systems for treating emerging pollutants was summarized in this review. In addition, the process of biofouling on mem- branes and the development of relevant antifouling technologies were investigated. Besides, the perspectives of MBR systems on the ap- plication of emerging pollutant treatment were provided, which would help support the research and development of technologies in the field of water reclaiming in the future.
Particle-in-cell Simulation of Energy Conversion at the Turbulent Region Downstream of the Reconnection Front
Authors: Yi Yongyuan , Pang Y. , Song Liangjin , Jin Runqing , Deng Xiaohua
Published: April 2023

We study the energy conversion in the turbulent region (TR) downstream of the reconnection front (RF) via 2.5D particle-in-cell simulations. Our study shows that most magnetic energy is transferred into plasma in the exhaust region (ER) and the TR downstream of the RF; the latter is formed due to the electron Kelvin–Helmholtz instability (KHI). Unlike the energy conversion in the ER, the energy conversion in the TR is mainly balanced by its in-plane component (E

x

J

x
+E

z

J

z
). We further find that the time evolution of the integrated energy conversion in the TR is strongly correlated with the time evolution of the electron KHI and secondary reconnection. The KHI feeds on the electron kinetic energy to grow, and electron vortices are formed, correspondently. The energy is transferred to ions through a nonideal electric field associated with those electron vortices after the KHI is well developed. Finally, the electron vortices are collapsed due to the secondary reconnection among those vortices. The power law of the magnetic energy spectra also shows a slope near −5/3 at wavenumbers larger than the ion scale when the KHI is fully developed.
Evidence for the Self-organized Criticality Phenomenon in the Prompt Phase of Short Gamma-Ray Bursts
Authors: Li Xiu-Juan , Zhang Wen-Long , Yi Shuang-Xi , Yang Yu-Peng , Li Jia-Lun
Published: April 2023

The prompt phase of gamma-ray bursts (GRBs) contains essential information regarding their physical nature and central engine, which are as yet unknown. In this paper, we investigate the self-organized criticality phenomenon in GRB prompt phases as done in X-ray flares of GRBs. We obtain the differential and cumulative distributions of 243 short GRB pulses, such as peak flux, FWHM, rise time, decay time, and peak time in the fourth BATSE Time-Tagged Event Catalog with the Markov Chain Monte Carlo technique. It is found that these distributions can be well described by power-law models. In particular, comparisons are made with 182 short GRB pulses in the third Swift GRB Catalog from 2004 December to 2019 July. The results are essentially consistent with the BATSE ones. We notice that there is no obvious power-law index evolution across different energy bands for either BATSE or Swift short GRBs. The joint analysis suggests that the GRB prompt phase can be explained by a fractal-diffusive self-organized criticality system with the spatial dimension S = 3 and the classical diffusion β = 1. Our findings show that GRB prompt phases and X-ray flares possess the very same magnetically dominated stochastic process and mechanism.
Comparison of tea tree oil 5%, tea tree oil 10%, and nystatin inhibition zones against vaginal Candida isolates in pregnancy
Authors: Ervianti Evy , Damayanti  , Purnamasari Indah , Astari Linda , Prasetyo Budi , Endraswari Pepy D , Utomo Budi , Fitriani Endang Wahyu , Indramaya Diah Mira , Listiawan M Yulianto , Sigit Prakoeswa Cita Rosita
Published: April 2023

Introduction: Vulvovaginal candidiasis (VVC) in pregnancy frequently develops into recurrent infections. Clinical study suggests that conventional topical treatments for VVC are not always enough to eradicate Candida spp. from the vaginal microenvironment. This study aimed to evaluate the antifungal activity of tea tree oil (TTO) 5% and TTO 10% against Candida species causing VVC in pregnancy.
Methodology: In vitro experimental study was conducted in the Mycology Laboratory at Dermatovenereology Outpatient Clinic Dr. Soetomo General Hospital Surabaya. Eighteen isolates of Candida species were isolated from the vaginal thrush of 15 pregnant women diagnosed with VVC from March to May 2021. Antifungal susceptibility of TTO 5% and TTO 10% was evaluated by the disc diffusion method, with the inhibitory zone diameter as the main outcome.
Results: The mean inhibitory zone diameter of TTO 5%, TTO 10%, and nystatin against all Candida spp. was 7.26 mm, 8.64 mm, and 25.57 mm, respectively (p < 0.001). The mean inhibitory zone diameter of TTO 5%, TTO 10%, and nystatin tend to be larger in C. albicans compared to the non-albicans, but the difference is not significant. Nystatin displayed the largest mean inhibitory zone diameters compared to TTO 5% and TTO 10% (p < 0.001) in all Candida species. Increased concentration from TTO 5% to TTO 10% resulted in a slight increment in the mean inhibitory zone diameters in all-Candida species (p = 0.001).
Conclusions: Tea Tree Oil displayed antifungal activity against Candida species causing VVC in pregnancy. Further studies are required to investigate optimal TTO concentrations as a VVC treatment in pregnancy.
Increase in rabies cases during COVID-19 pandemic: Is there a connection?
Authors: Rasizadeh Reyhaneh , Hossein Bannazadeh Baghi
Published: April 2023

Increase in rabies cases during COVID-19 pandemic: Is there a connection?
La mise en scène de l’expertise des Youtubeuses en matière nutritionnelle : le cas des vidéos « une journée dans mon assiette »
Authors: David Maxime , Ezan Pascale
Published: April 2023

• Objectifs L’objectif de cette recherche est de comprendre la manière dont les influenceurs mettent en scène leur expertise pour devenir des figures d’autorité dans le domaine alimentaire. • Méthodologie Une netnographie a été réalisée à partir d’un corpus de 86 vidéos YouTube, appartenant au concept des « une journée dans mon assiette », illustrant l’alimentation quotidienne. Le corpus a également été soumis à une analyse nutritionnelle des plats proposés. • Résultats Les résultats soulignent que l’expertise est liée à la maîtrise de trois principales dimensions : numérique, thématique et sociale. Le partage des expériences vécues concernant l’alimentation est privilégié et participe à la transmission des connaissances. Une vision particulière du manger sain est diffusée, s’éloignant souvent de ce que recommandent les institutions de santé. • Implications managériales/sociétales Cette recherche apporte des pistes en termes de santé publique, invitant les pouvoirs publics à repenser les campagnes de communication en lien avec le manger-sain. • Originalité Ce travail puise son originalité dans la méthodologie employée, combinant à la fois sciences de gestion et nutrition.
Affirmer la naturalité et la proximité du produit alimentaire pour renforcer l’effet de la mention terroir
Authors: Ertus Pascale
Published: April 2023

• Objectif L’objectif de cette recherche est d’identifier les dimensions du terroir qui participent le plus à la perception de la qualité dans l’esprit du consommateur et celles qui favorisent ses comportements. • Méthodologie La démarche est quantitative par questionnaire sur 1 015 consommateurs. Le traitement statistique des données a été réalisé sous les logiciels SPSS Statistics 20 et EQS 6.2 pour les équations structurelles. • Résultats La recherche montre les effets positifs de la naturalité du produit comme heuristique de qualité induisant une réaction comportementale de la part du consommateur. Plus le produit alimentaire du terroir est perçu comme étant un produit naturel, fabriqué près du consommateur et lui rappelant son enfance, plus il est perçu comme qualitatif et plus ses intentions pécuniaires et efforts de recherche sont grands. • Implications managériales La recherche permet de formuler des recommandations autour des leviers informationnels sur lesquels il convient de communiquer dans le cadre du développement d’une politique de marque « terroir » et dans le but de favoriser l’achat du consommateur. • Originalité Cette recherche s’inscrit dans la continuité des travaux préalables sur le terroir qu’elle complète en permettant de relever les effets différenciés des dimensions du terroir sur la qualité perçue des produits et les intentions d’efforts pécuniaires et de recherche de ce type de produit.
L'industrie crypto française et européenne : les nouveaux bâtisseurs de monnaies numériques
Authors: Fleuret Faustine
Published: April 2023

Depuis plus d'une décennie, les technologies blockchain et les cryptoactifs sont au cœur d'un changement de paradigme général. En rendant à l'utilisateur la propriété et le contrôle de ses actifs, de ses données et de la valeur qu'il crée dans l'univers numérique et en lui permettant d'en disposer comme il le souhaite en toute autonomie, « la crypto » nous fait basculer en quelques années vers le nouveau référentiel du Web3. Un référentiel dont la première brique, le bitcoin, a immédiatement posé les jalons de nouvelles modalités d'échange nativement numériques. Dans le présent article, nous peindrons le paysage de l'industrie française et européenne des cryptoactifs et dresserons le portrait de ses parties prenantes privées et publiques, ainsi que les travaux déjà accomplis afin d'appréhender et s'approprier cette innovation. Nous montrerons ainsi que si la France et l'Europe ont très tôt engagé le chantier réglementaire autour de ces nouvelles monnaies numériques, beaucoup reste à faire pour lever les freins à leur développement. Nous présenterons ensuite les trois formes de monnaies numériques – les cryptomonnaies, les stablecoins et les monnaies numériques de banque centrale – qui s'inscrivent chacune dans la transformation profonde en cours de l'économie et de la finance mondiales. Classification JEL : D02, O33.
Les fausses promesses de Terra-Luna
Authors: Levy-Garboua Vivien , Maarek Gérard
Published: April 2023

Cet article présente les caractéristiques des stablecoins algorithmiques en distinguant ceux comme Terra-Luna, dont l'actif de référence a une valeur endogène, de ceux pour lesquels le prix de cet actif est exogène et indépendant du protocole mis en place. À partir d'une modélisation simple du processus, nous montrons que le schéma retenu pour Terra-Luna s'apparente à un schéma de Ponzi, du fait d'une promesse de rémunération des apports impossible à tenir. Cependant, si l'on corrige cette « fausse promesse », un stablecoin algorithmique peut apporter à ses porteurs une plus grande stabilité que celle de Bitcoin par exemple, ce qui le rend plus attractif. Cela reste toutefois un actif risqué, dont on ne peut garantir la stabilité sur une longue période, même en l'absence d'une attaque spéculative. Classification JEL : D02, G23.
Usage et régulation des stablecoins dans les paiements
Authors: Lavayssière Xavier
Published: April 2023

Les stablecoins offrent des infrastructures de paiement ouvertes et mondiales dont le modèle et les technologies sous-jacentes ont inspiré de nombreuses initiatives privées et publiques. Cependant, leur régulation en tant qu'instruments de paiement demande la recherche de plusieurs équilibres. Cet article procède à une analyse de l'état actuel des stablecoins et de leur évolution potentielle pour proposer deux dimensions d'une approche réglementaire. La première est le recours à des cadres progressifs. Les stablecoins sont des projets naissants, avec une adoption limitée et des technologies immatures, mais qui ont le potentiel d'atteindre une importance systémique. La seconde est d'établir des cadres spécifiques aux technologies. Les stablecoins reposent sur des infrastructures partagées avec des intermédiaires périphériques. Préserver l'intégrité des paiements et protéger les intérêts des consommateurs de façon optimale suppose une réglementation sur mesure avec des responsabilités repensées et différenciées. Classification JEL : E42, K02.
Politique monétaire et monnaies numériques
Authors: Pfister Christian
Published: April 2023

Cet article examine les conséquences pour la politique monétaire de l'émission de monnaies numériques de banque centrale (MNBC) et de stablecoins , dans l'ensemble assez similaires. Ces conséquences devraient surtout s'exercer sur le mécanisme de transmission, avec des risques de désintermédiation dans l'ensemble des économies et d'asymétries accrues et de dollarisation dans les économies émergentes et en développement. En outre, le canal des taux d'intérêt pourrait être renforcé en rémunérant la MNBC à un taux référencé sur le taux directeur. S'agissant des objectifs de politique monétaire, l'inflation, la croissance économique et la masse monétaire pourraient transitoirement s'accélérer. Surtout, le change pourrait devenir plus volatil, gênant la poursuite d'un objectif sur celui-ci. En temps normal, la mise en œuvre de la politique monétaire serait globalement peu affectée, sauf passage à une politique monétaire en temps réel. Classification JEL : E42, E52, E58.
La confidentialité des paiements : du XVIII e siècle à l'euro numérique
Authors: Barresi Rosa Giovanna
Published: April 2023

Cet article propose une approche objective de la question de la confidentialité des paiements. Au xviii e  siècle, cette question était simplement vue sous l'angle pénal. Les tentatives ultérieures de l'intégrer à la sécurité des entreprises ou de proposer des solutions cryptographiques se sont avérées inadéquates. Lorsque la banque de détail a découvert comment extraire des revenus des données opérationnelles, la confidentialité des paiements a finalement été définie comme le fait de fournir une protection de base des données relatives aux consommateurs et aux investisseurs. Les questions de confidentialité soulevées par le projet d'euro numérique sont examinées sous cet angle, ainsi que d'un point de vue microéconomique. Classification JEL: E42, E58, K22 .
Le label ISR français : gage de qualité extra-financière sans coût financier
Authors: Ferrat Yann
Published: April 2023

Créé en 2016, le label ISR français a été introduit afin de dissocier les OPCVM conventionnels de ceux qui mettent en avant des objectifs extra-financiers. En analysant des OPCVM investissant sur le marché des actions de la zone euro, cet article a pour objectif de comprendre l'impact financier des contraintes extra-financières requises par le label. Les résultats montrent que les OPCVM labélisés présentent des rendements au moins en ligne avec le marché et les OPCVM conventionnels. Ainsi, le label ISR permet de financer des émetteurs responsables sans coût financier notable. Classification JEL : G11, M14.
Les Arabes et les Soviétiques. Une relation nécessaire à la fin tragique (un point de vue arabe)
Authors: Al-Shalabi Jamal , Al-Tarawneh Awad , Chamba Nathalie
Published: April 2023

Notre étude cherche à éclairer la nature des relations arabo-soviétiques et leur transformation à la lumière de la « bipolarité » internationale qui dura de 1945 à 1990, ainsi qu’à analyser d’un côté les intérêts du second pôle mondial représenté par l’Union soviétique et de l’autre côté les intérêts des pays arabes qui ont adopté l’approche soviétique dans leur développement socio-économique. Les pays arabes en question dans notre étude sont les pays africains : l’Égypte, l’Algérie et la Libye, et les pays asiatiques : la Syrie et l’Irak. S’il paraît logique que l’Union soviétique ait cherché à poursuivre ses intérêts dans le système international en étendant son contrôle et son influence dans le monde en général et dans l’Orient arabe en particulier par toute sorte de moyens durs ou souples, on constate que les intérêts et les motivations des pays arabes ne sont pas nécessairement les mêmes. Ils ont des intérêts communs en matière d’énergie, d’industrialisation et de culture, mais leurs intérêts sont divergents sur d’autres points, même s’ils ont trois facteurs profondément communs entre eux. Premièrement, ils cherchent à obtenir un soutien politique pour équilibrer les relations avec les USA qui sont biaisées par la cause palestinienne. Deuxièmement, ils veulent acquérir grâce aux armes soviétiques des capacités militaires d’autodéfense face aux dangers internes et externes. Troisièmement, peut-être à cause de la lutte des classes sociales, renforcée par le colonialisme, dont ces pays ont fait l’expérience avant de gagner leur indépendance, les « nouveaux dirigeants » qui menèrent les processus dans tous les pays mentionnés dans notre étude se tournèrent vers le système social socialiste « flexible » proposé par l’Union soviétique, sans lien idéologique du point de vue politique, c’est-à-dire sans connexion organique avec le Parti Communiste Soviétique et son idéologie globale. Quatrièmement, tous ces pays arabes qui étaient organisés sous l’égide d’une forte relation avec l’Union soviétique pendant la Guerre froide se tournèrent vers le libéralisme occidental, à l’exception de l’Algérie et de la Syrie.
Aspects de la culture brésilienne pendant la dictature militaire et la Guerre froide
Authors: Salun Alfredo Oscar , Caresia Roberto Marcelo , Chamba Nathalie
Published: April 2023

Cet article analyse les différentes facettes de la culture brésilienne pendant la dictature militaire (1964–1985). Le discours contre la menace et la subversion communiste était influencé par la Guerre froide et associé à la répression et à la censure. Dans ce contexte, la culture joua un grand rôle pour résister au système autoritaire.
An Innovative Well-Child Video Project to Teach Developmental Surveillance and Anticipatory Guidance
Authors: Teall Alice M. , Bobek Heidi , Zeno Rosie , Graham Margaret Clark
Published: April 2023

Background:

Learning to implement developmental surveillance and anticipatory guidance are critical components of clinical nursing education.

Method:

The purpose of the Well-Child Video Project was to provide nursing students opportunities to develop confidence in providing early childhood health supervision. The faculty team curated more than 100 video clips of children age 0 to 6 years demonstrating key developmental milestones. Nurse practitioner students (
N
= 33) enrolled in an online course participated in a collaborative learning activity and completed pre- and post-assignment surveys assessing their level of confidence and evaluating their engagement.

Results:

Students reported increased confidence in their ability to perform developmental surveillance and deliver anticipatory guidance following the clinical learning activity. Students (93.75%) agreed that the video strategy enhanced their learning.

Conclusion:

The Well-Child Video Project served as a cost-effective, easily accessible, user-friendly digital resource for designing innovative learning activities to increase student engagement in practicing developmental surveillance and anticipatory guidance.

[
J Nurs Educ
. 2023;62(7):412–415.]
Research on two-class and four-class action recognition based on EEG signals
Authors: Chang Ying , Wang Lan , Zhao Yunmin , Liu Ming , Zhang Jing
Published: April 2023

BMI has attracted widespread attention in the past decade, which has greatly improved the living conditions of patients with motor disorders. The application of EEG signals in lower limb rehabilitation robots and human exoskeleton has also been gradually applied by researchers. Therefore, the recognition of EEG signals is of great significance. In this paper, a CNN-LSTM neural network model is designed to study the two-class and four-class motion recognition of EEG signals. In this paper, a brain-computer interface experimental scheme is designed. Combining the characteristics of EEG signals, the time-frequency characteristics of EEG signals and event-related potential phenomena are analyzed, and the ERD/ERS characteristics are obtained. Pre-process EEG signals, and propose a CNN-LSTM neural network model to classify the collected binary and four-class EEG signals. The experimental results show that the CNN-LSTM neural network model has a good effect, and its average accuracy and kappa coefficient are higher than the other two classification algorithms, which also shows that the classification algorithm selected in this paper has a good classification effect.
Homogenization of nonlinear nonlocal diffusion equation with periodic and stationary structure
Authors: Chen Junlong , Tang Yanbin
Published: April 2023

This paper is devoted to the homogenization of a class of nonlinear nonlocal parabolic equations with time dependent coefficients in a periodic and stationary structure. In the first part, we consider the homogenization problem with a periodic structure. Inspired by the idea of Akagi and Oka for local nonlinear homogenization, by a change of unknown function, we transform the nonlinear nonlocal term in space into a linear nonlocal scaled diffusive term, while the corresponding linear time derivative term becomes a nonlinear one. By constructing some corrector functions, for different time scales $ r $ and the nonlinear parameter $ p $, we obtain that the limit equation is a local nonlinear diffusion equation with coefficients depending on $ r $ and $ p $. In addition, we also consider the homogenization of the nonlocal porous medium equation with non negative initial values and get similar homogenization results. In the second part, we consider the previous problem in a stationary environment and get some similar homogenization results. The novelty of this paper is two folds. First, for the determination equation with a periodic structure, our study complements the results in literature for $ r = 2 $ and $ p = 1 $. Second, we consider the corresponding equation with a stationary structure.
Philosophie, médecine et frères mendiants à Bologne dans la première moitié du XIVe siècle
Authors: Chandelier Joël , Tabarroni Andrea
Published: April 2023

Cet article se propose d’étudier les rapports entre Mendiants et membres de la Faculté des arts et médecine à Bologne entre la fin du XIIIe siècle et le milieu du XIVe siècle. Ce cadre est en effet très particulier en raison de la présence dans la cité de ce studium laïc très important, d’écoles mendiantes très actives, mais aussi de l’absence de faculté de théologie avant 1364. On étudie d’abord l’aspect institutionnel de ces rapports, puis les échanges et passages de Mendiants entre la ville et le reste de l’Occident, pour enfin aborder deux cas particuliers remarquables : le manuscrit 445 (D.III.19) de la Biblioteca Comunale Teresina de Mantoue et l’œuvre du professeur de médecine Tommaso del Garbo (mort vers 1370). L’ensemble démontre que les contacts entre les membres des deux institutions n’étaient pas qu’institutionnels et dévotionnels : ils allaient jusqu’à une nette influence sur le contenu des doctrines, dans des échanges non pas concurrentiels, mais collaboratifs.
L’aimant et la rouille : Paul de Venise et l’attraction magnétique dans le commentaire de la Physique
Authors: Weill‑Parot Nicolas
Published: April 2023

Cet article porte sur la question de l’attraction magnétique telle qu’elle est abordée dans le Commentaire de la Physique de Paul de Venise. Comme la plupart des commentateurs médiévaux, il est tributaire à la fois du Grand commentaire de la Physique d’Averroès et de l’Expositio sur la Physique de Gilles de Rome. Ces deux autorités occupent‑elles chez lui une place particulière compte tenu de sa carrière universitaire en Italie (notamment à Padoue) et de son appartenance à l’ordre des Ermites de saint Augustin ? Quoi qu’il en soit, son commentaire ne se contente pas de redites, il semble innover en introduisant l’expérience du fer rouillé qui n’est plus attiré par l’aimant. Il adopte aussi une position originale dans le débat qui avait opposé Walter Burley à Guillaume d’Ockham sur l’attraction magnétique.
“Bene scrivono i filosofi”. La predicazione domenicana e il sapere filosofico a Firenze tra tre e quattrocento: Iacopo Passavanti, Giovanni Dominici, Girolamo Savonarola
Authors: Tromboni Lorenza
Published: April 2023

Il saggio analizza la funzione delle fonti filosofiche nell’opera di tre autori appartenenti all’ordine domenicano che hanno predicato a Firenze in lingua volgare tra XIV e XV secolo: Iacopo Passavanti, Giovanni Dominici e Girolamo Savonarola. Nell’opera dei tre predicatori sono presenti molte fonti filosofiche unite a quelle bibliche e patristiche: si tratta di fonti che di rado vengono citate esplicitamente, ma che hanno spesso grande importanza nella costruzione delle argomentazioni e talora assolvono una funzione retorico‑didattica. Contestualmente, questi predicatori si adoperano per costruire un’immagine dei filosofi classici che, sebbene ricca di contraddizioni agli occhi di noi moderni, mira a mettere in guardia i fedeli nei confronti di un sapere pagano che nasconde insidie per la morale e tentazioni sul piano intellettuale. La tesi esposta nel saggio si basa su numerose testimonianze testuali che vengono analizzate parallelamente alle fonti a cui fanno riferimento.
‘Poor little princess’: Queen Victoria’s Court as a Site of Imperial Conquest
Authors: Barua Chandrica
Published: April 2023

This essay illuminates the elusive and messy archives of an unusual presence in the Victorian court, that of Princess Victoria Gouramma (1841‒1864), daughter of the deposed King of Coorg, Chikka Virarajendra and goddaughter and namesake of Queen Victoria. The messy and circuitous archives of Gouramma reveal the story of a colonized, racialized, exteriorized colonial subject becoming an ornamental interior of the Empire. Gouramma had found herself in 1850s England, displaced from her homeland and culture, anglicized and Christianized, pruned and displayed as the glorious civilizational project of the Empire, and yet never truly being an inhabitant of Victorian interiors. Queen Victoria’s royal court, within which Gouramma’s material and ephemeral presence is articulated, was fashioned as a sanctuary from the ‘savage’ and ‘primitive’ colony of Gouramma’s past. In this unique instantiation of imperial conquest founded upon care and rehabilitation, we are prompted to rethink not only the colonial civilizational agenda but also the contentious intimacies amongst the Empire and its colonies. Through an analysis of the recorded and recollected interactions between the Queen and her Indian ward, this essay charts out the emergence of a maternal politics—care and conquest—that wielded a specific epistemological, ontological power and an insidious psychic conquest of personhood.
Reading the Colours of Victorian Interiors: The Poetic Home Revisited
Authors: Ribeyrol Charlotte
Published: April 2023

The invention of mauveine, the first coal-tar based aniline dye in London in 1856 marked a chromatic turning-point in the history of industrial Europe. Up until the 1870s Britain was in the vanguard of this ‘colour revolution’. Mauve was soon followed by a whole gamut of new, low-priced dyes which radically transformed the experience of colour for all sections of society. As a consequence, the ‘evolution’ of the colour-sense received unprecedented attention, not only from the scientists who made colour production and colour perception their new object of study, but also from artists and writers like John Ruskin or William Morris who placed colour at the centre of the creative process. Surprisingly, this ‘colour revolution’ has only rarely been approached from the perspective of interior decoration despite the fact that from the 1860s an increasing number of periodicals and popular handbooks offered guidance on how to make one’s home ‘poetic’ thanks to the right colour arrangements. In this article I analyse a selection of these ‘colour grammars’ which aimed to channel and control the chromatic ‘chaos’ of modernity, before discussing a unique instance of a well-preserved and poetically colourful interior: the architect William Burges’s Tower House in London.
‘The True Food of the Brain’ : protéines et constructions raciales en Angleterre, 1840-1910
Authors: Page Arnaud
Published: April 2023

In the eighteenth century, meat became strongly associated with English national identity and was often used in discourses about national differences. This article seeks to analyze how, from the 1840s to WWI, the development of food chemistry—a science then primarily concerned with the importance of proteins—contributed to strengthening this discourse. The article thus shows how science gave a renewed legitimacy to discourses establishing strong fault lines and hierarchies between different peoples or ‘races’, depending on their diets. The second part of the article shows, however, the evolutions and complex uses of this scientific discipline which eventually contributed to a relative weakening of ideas linking a meat diet and national or racial supremacy.
Synthesis and Molecular Structures of 1-Carboxyl-4-Amino-2-Aza-3-Oxo-[2.2.2] Bicyclooctane
Authors: Dashzeveg Rentsenmyadag , Altanzul Demberel , Javkhlantugs Namsrai , Kohno Yuji , Douglas F.Dyckes
Published: April 2023

The novel bicycloamino acid, 1−carboxyl−4−amino−2−aza−3−oxo−[2.2.2] bicyclooctane was synthesized and its physical characteristics have been compared to those predicted using quantum chemical calculations. The crystal structure of novel compound was determined by X-ray diffraction measurements at room temperature. Unit cell is monoclinic, with space group P 21/n (14) and a = 5.8587(6) Ǻ, b = 11.2454(16) Ǻ, c = 13.9723(16) Ǻ, β=97.840(6)°, Z = 2. Refinement was performed using all 1598 reflections with R = 0.4085 and wR = 0.6024. Theoretical calculation of full optimization and atomic net charge, and frontier orbital energies of the title compound was carried out at the B3LYP/6−31G(d,p) level. The NMR chemical shielding tensors and vibrational frequencies were calculated with B3LYP/6-311+G(2d, p)− level in which were close values and similar spectrum structures with experimental results and used to interpret the experimental measurements.
Effect of Surface Modification on the Impact Strength and Hardness of Areca Husk Fibre Reinforced Polyester Resin Composite
Authors: Chethan G. , Sunil K.C. , Narayana Yerol
Published: April 2023

Reinforced natural fibre composite materials are attracting greater attention in the area of material engineering due to their low density, low cost and higher mechanical strength. In the present study, the Areca Husk Fiber (AHF) was extracted through the retting process. The surface modification of AHF was done by chemical treatments such as mercerization, potassium permanganate treatment, benzoylation, acrylation and acetylation. The surface modification was studied through FE-SEM imaging. The composites of surface modified AHF reinforced polyester resin composites were prepared as per ASTM standards using polyester resin as matrix material and methyl ethyl ketone peroxide (MEKPO) as hardener. The Izod-Charpy impact strength, Hardness (Shore-) hardness analysis was carried out to study the mechanical behaviour of the composites. The results showed that surface modification of AHF can enhance the impact strength of the composite materials but not the hardness of the composites.
Limits of the Protective Ability of Zinc Coating on Steel
Authors: Kanunnikova Olga M. , Rudenok V.A. , Aristova G.N.
Published: April 2023

One of the most effective means of protecting metalwork equipment premises from corrosion is currently zinc-plating. Zinc-plating increases the service life of the equipment by 2-3 times, i.e. up to 20 years, which makes this method economically justified.We measured the electrode potentials and corrosion current between two plates – steel and zinc, depending on the size of the zinc plate. Modeling of the corrosion process with a decrease in the zinc coating was carried out by reducing the area of the zinc plate. At the same time, the area of the steel plate was constant. The protective ability of the zinc coating is maintained as long as it occupies at least 10% of the surface area of the steel product. Reducing the area of the zinc coating leads to catastrophic corrosion failure of the coating.
Polypropylene/Date Palm Fiber Nano Filler Biocomposites: Investigation of some Rheological Aspects
Authors: Shaikh Hamid M. , Alshammari Basheer , Alghamdi Noor , Jawaid Mohammad , Alothman Othman Y.
Published: April 2023

Rotational rheology was used to analyze the performance of polypropylene (PP) composites reinforced with date palm nanofiber (DNF) in the molten state in this study. In the first stage, mechanical ball milling was used to obtain date nanofillers with average filler sizes ranging from 30–110 nm in width and 1–10 mm in length. Dry blending technique was used to reinforce this filler to the polypropylene in the 1-5wt. % loading. The resulting PP/DNF biocomposites were subsequently tested using a rotating rheometer with a 25 mm parallel plate geometry. The broad range of angular frequency from 0.1 rad·s−1 to 100 rad·s−1 was applied to study their complex viscosity (η*) at a fix strain (1%). The decrease in complex viscosity with angular frequency in all the samples was observed compared to the neat PP. The complex viscosity of the neat PP and the 5 wt.% of filler samples at 0.1 rad·s−1 frequency was found to have 18170 Pa. s and 5335 Pa. s, respectively. Therefore, this analysis revealed that this biocomposites exhibits typical viscoelastic behavior of entangled polymeric liquid.
Effect of Continuous Laser Treatment on the Wear Resistance of Hard Alloy WCo8
Authors: Bogodukhov S.I. , Kozik E.S. , Svidenko E.V , Semagina Yu.V.
Published: April 2023

The hardening of hard alloy WCo8 was performed by continuous laser radiation with a laser beam of 1 mm/min diameter, laser radiation power of 200 W, and different speeds of laser beam movement. After laser treatment of hard alloy WCo8, diamond-abrasive wear tests were performed. Duration of the tests varied: 3–6–9 minutes; then the wear, intensity of wear, wear rate were calculated. The analytical dependences of determining the diamond-abrasive wear of hard alloy WCo8 depending on three parameters (power, laser beam propagation speed and duration of the diamond-abrasive wear process) were evaluated. There are no methodological difficulties in applying those dependencies, therefore we get high reliability of the results obtained in that case and the possibility to further calculate the effect of increasing the power and speed of laser radiation on the diamond-abrasive wear.
Sol-Gel Synthesis and Optical Characterization of Zno Nanoparticles
Authors: Turtogtokh Enkhtuya , Tsermaa Galya
Published: April 2023

The zinc oxide nanoparticles were synthesized to investigate the ultraviolet light absorbance and transmittance for applications of UV protection. Zinc oxide nanoparticles were characterized by photon cross-correlation and ultra-violet spectrophotometers. The results show that the synthesized zinc oxide nanoparticles have the mean diameter of ~35 nm of main particles with particle size distribution range from ~11 nm to ~80 nm.The use of synthesized nanoparticles achieved transmission levels of over 95 % in the UVA regions at the wavelength range of 320-400 nm.