bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Motivation, Employee Development and Teamwork on Employee Performance through Employee Engagement in Service Industry Employees
Authors: Taning Ameilia Harum Khaerani , Tanuwijaya Justine , Gunawan P Andreas Wahyu
Published: May 2024

Objective: to analyze the influence of motivation, employee development and teamwork on employee performance through employee engagement in service industry employees. Research Method: The type of research method used in this research is descriptive quantitative with a cross sectional design using a questionnaire. The research sample was selected using convenience sampling and snowball sampling methods with a total of 120 respondents consisting of service industry employees in Jakarta and Kalimantan. Data analysis used to test the hypothesis uses Structural Equation Model (SEM) with the software used is SMART-PLS 3 to test direct effects, and SMARTPLS 3.0 Bootstrapping to test indirect effects. Research Results: Motivation, employee development and teamwork have a positive effect on employee engagement. Employee development, teamwork and employee engagement have a positive effect on employee performance. Motivation has a negative effect on employee performance. Employee development has no effect on employee performance through employee engagement. Motivation and teamwork influence employee performance through employee engagement. Managerial Implications: Evaluation material for companies in the service sector that want to improve employee performance by increasing employee motivation, employee development, teamwork and employee engagement.
Nanofluid-Infused Microchannel Heat Sinks: Comparative Study of Al2O3, TiO2, and CuO to Optimized Thermal Efficiency
Authors: Qamar Fairuz Zahmani  , Norzelawati Asmuin  , Mohamad Kamil Sued  , Siti Nor’ain Mokhtar  , Muhammad Nazrul Hakimi Sahar
Published: May 2024

Nanofluid technology advancements have significantly improved cooling performance by utilising distributed nanoparticles, showing promise as an effective method for heat removal. These nanomaterials offer unique opportunities to cool electrical appliances. Nanofluids, akin to conventional fluids, exhibit thermophysical properties such as viscosity, specific heat, and fluid behaviour, ranging from laminar to turbulent. The thermal behavior of nanofluids is influenced not only by concentration but also by nanoparticle size, shape, material, and base fluid parameters. This study focuses on investigating the thermal behaviour and cooling efficiency within a straight single microchannel heat sink (MCHS), utilising water-based nanofluids—Al2O3, TiO2, and CuO. A series of experiments were conducted on the MCHS with varying nanoparticle concentration percentages in a rectangular channel measuring 6 mm (W) x 10 mm (H) x 30 mm (L). Computational Fluid Dynamics (CFD) simulations using Fluent model the channel's behaviour, applying a heat flux of 45,000 W/m2 at the base of the aluminium microchannel heat sink. The study examines Reynolds numbers ranging between 2000 and 2300 across inlet velocities from 0.0405 m/s to 0.04658 m/s. Prior research indicates a positive correlation between higher Reynolds numbers and improved nanofluid cooling performance. The projected conclusion based on existing literature suggests that Al2O3, with increased particle concentration, is likely to outperform other nanofluids in terms of Reynolds number. Reported viscosities of Al2O3 increase as nanoparticle concentration rises. Additionally, higher Reynolds numbers correspond to greater pressure drops in the microchannel heat sink. The investigation underscores the potential of nanofluids in improving thermal conductivity and cooling performance. The concentration-dependent behaviour of Al2O3 and its influence on Reynolds number further support its potential superiority among other nanofluids.
Fisuras generacionales en el norte de Chile
Authors: Bravo Vega Fabián , Cortés Cortés Javier Enrique
Published: May 2024

En este texto se explora el proceso de construcción de la identificación religiosa en jóvenes universitarios del Campus Guayacán de la Universidad Católica del Norte (Coquimbo). El marco teórico responde a una conceptualización de la religión basada en el enfoque de la “religiosidad vivida”, el cual enfatiza la capacidad de los actores para conectarse con poderes suprahumanos en la cotidianeidad (Pereira Arena y Morello, 2022). La metodología utilizada en la investigación es cualitativa, basada en el paradigma interpretativo, a través de entrevistas en profundidad. Entre los resultados se observa un quiebre generacional en la trasmisión de la creencia religiosa que da cuenta de un proceso de reflexividad biográfica. Además, se reconocen tres modalidades de construcción de la identificación religiosa: la vía institucional, la vía des-institucional y la vía no-religiosa.
Unilateral Vocal Cord Paralysis Following COVID-19 Infection: A Case Report and Literature Review
Authors: Abou Zeid Hadi , Sati Heba , Husseini Sami , Abou Zeid Chadi , Abou Zeid Hala , Chakouch Abdallah
Published: May 2024

Background: Throughout the COVID-19 pandemic, numerous symptoms and complications were encountered. These symptoms ranged from conjunctivitis, diarrhea, and anosmia to headache, confusion, lightheadedness, acute cerebrovascular disease, epilepsy, acute disseminated encephalomyelitis, encephalitis, loss of taste, pain in muscles, and Guillain-Barre Syndrome. Some carriers were asymptomatic and only had a diminished sense of smell. Besides, one of the rare manifestations that may be encountered post-COVID-19 infection is vocal fold paralysis, unilaterally or bilaterally.
Case report: This is the case of a 47-year-old female patient presenting with hoarseness of 10 weeks duration and 11 weeks post-COVID-19 infection. Using laryngoscopy, the patient was diagnosed with right vocal cord paresis with incomplete abduction. However, there were no abnormalities found in the brain, thorax, or upper mediastinum. After refusing to take corticosteroids, gradual improvement in hoarseness was observed 2 weeks after her first visit to the clinic, and the patient reached complete remission in 4 weeks.
Conclusion: This case represents a very rare complication following coronavirus infection. Considering the sparse reports of such cases, it is extremely important to shed light on the possibility of vocal fold paresis after infection with COVID-19 and how these cases are being managed.
Fluorine Abundances in Local Stellar Populations
Authors: Brady K. E. , Pilachowski C. A. , Grisoni V. , Maas Z. G. , Nault K. A.
Published: May 2024

We present the first fluorine measurements in 12 normal K giants belonging to the Galactic thin and thick disks using spectra obtained with the Phoenix infrared spectrometer on the 2.1 m telescope at Kitt Peak. Abundances are determined from the (1−0) R9 2.3358 μm feature of the molecule HF. Additionally, sodium abundances are derived in 25 giants in the thin disk, thick disk, and halo using the Na i line at 2.3379 μm. We report fluorine abundances for thin and thick disk stars in the metallicity range −0.7 < [Fe/H] < 0. We add two abundance measurements for stars with [Fe/H] < 0.5 dex, which are at a critical metallicity range to constrain models. We find a larger dispersion in fluorine abundances than sodium abundances despite both species having similar overall uncertainties due to atmospheric parameters, suggesting this dispersion is real and not observational. The dispersion is slightly larger in the thick disk than the thin. The thin and thick disk average [F/Fe] for our sample of stars combined with the literature differ by 0.03 dex. The observations are compared to available chemical evolution models.
The ecology of lichenicolous lichens: a case-study in Italy
Authors: Nimis Pier Luigi , Pittao Elena , Caramia Monica , Pitacco Piero , Martellos Stefano , Muggia Lucia
Published: May 2024

This paper, with Italy as a case-study, provides a general overview on the ecology of lichenicolous lichens, i.e. those which start their life-cycle on the thallus of other lichens. It aims at testing whether some ecological factors do exert a positive selective pressure on the lichenicolous lifestyle. The incidence of some biological traits (photobionts, growth-forms and reproductive strategies) in lichenicolous and non-lichenicolous lichens was compared, on a set of 3005 infrageneric taxa potentially occurring in Italy, 189 of which are lichenicolous. Lichenicolous lichens have a much higher incidence of coccoid (non-trentepohlioid) green algae, crustose growth-forms and sexual reproduction. A matrix of the 2762 species with phycobionts and some main ecological descriptors was subjected to ordination. Lichenicolous lichens occupy a well-defined portion of the ecological space, tending to grow on rocks in dry, well-lit habitats where a germinating spore is likely to have a short life-span, at all altitudes. This corroborates the hypothesis that at least some of them are not true “parasites”, as they are often called, but gather the photobionts - which have already adapted to local ecological conditions - from their hosts, eventually developing an independent thallus.
Refining the phylogeny and taxonomy of the apple tribe Maleae (Rosaceae): insights from phylogenomic analyses of 563 plastomes and a taxonomic synopsis of Photinia and its allies in the Old World
Authors: Wang Hui , Li Xiao-Ya , Jiang Yan , Jin Ze-Tao , Ma Dai-Kun , Liu Bing , Xu Chao , Ge Bin-Jie , Wang Ting , Fan Qiang , Jin Shui-Hu , Liu Guang-Ning , Liu Bin-Bin
Published: May 2024

This study addresses the longstanding absence of a comprehensive phylogenetic backbone for the apple tribe Maleae, a deficiency attributed to limited taxon and marker sampling. We conducted an extensive taxon sampling, incorporating 563 plastomes from a diverse range of 370 species encompassing 26 presently recognized genera. Employing a range of phylogenetic inference methods, including RAxML and IQ-TREE2 for Maximum Likelihood (ML) analyses, we established a robust phylogenetic framework for the Maleae tribe. Our phylogenomic investigations provided compelling support for three major clades within Maleae. By integrating nuclear phylogenetic data with morphological and chromosomal evidence, we propose an updated infra-tribal taxonomic system, comprising subtribe Malinae Reveal, subtribe Lindleyinae Reveal, and subtribe Vauqueliniinae B.B.Liu (subtr. nov.). Plastid phylogenetic analysis also confirmed the monophyly of most genera, except forAmelanchier,Malus,Sorbussensu lato, andStranvaesia. In addition, we present a comprehensive taxonomic synopsis ofPhotiniaand its morphological allies in the Old World, recognizing 27 species and ten varieties withinPhotinia, three species and two varieties withinStranvaesia, and two species and three varieties withinWeniomeles. Furthermore, we also lectotypified 12 names and made two new combinations,Photinia microphylla(J.E.Vidal) B.B.Liu andWeniomeles atropurpurea(P.L.Chiu ex Z.H.Chen & X.F.Jin) B.B.Liu.
Thismia malayana (Thismiaceae), a new mycoheterotrophic species from Peninsular Malaysia
Authors: Siti-Munirah Mat Yunoh , Hardy-Adrian Chin , Mohamad-Shafiq Sharipudin , Irwan-Syah Zainuddin , Hamidi Abd Halim
Published: May 2024

A new species of the mycoheterotrophic genus Thismia from Malaysia is described and illustrated. Thismia malayana introduced here was found in two localities: in the lowlands of Gunung Angsi Forest Reserve, Negeri Sembilan, and in the hilly dipterocarp forests of Gunung Benom in Tengku Hassanal Wildlife Reserve, Pahang. Thismia malayana falls into the section Thismia subsect. Odoardoa, as it has creeping vermiform roots and free equal tepals. It is characterised by the following taxonomically important features: a sepia-brown, urceolate-curved floral tube, free equal tepals with terminal appendages, prominent bright yellow annulus and bright violet-blue stamens each bearing five appendages (one pair of club-shaped inwards-pointing, one pair of acute outwards-pointing, and one central appendage). According to the categories and criteria of the IUCN Red List, T. malayana is provisionally classified as Vulnerable.
Le secret des paradoxes
Authors: Cattin Emmanuel
Published: May 2024

En première approche, la Bible se positionne à côté du régime normal de l’apparition des êtres. Elle fait le choix du paradoxe, mais pour nous faire découvrir que c’est nous-même qui sommes à côté de l’apparition de Dieu. Tel est le prix à payer, le signe de contradiction renversant notre raison mondanisée pour nous faire accepter la rigueur de l’amour divin.
Eunome, l’hérétique qui refuse le paradoxe
Authors: Pottier Bernard
Published: May 2024

Eunome de Cyzique peine à accepter le paradoxe de la Trinité et le contourne en recourant à un émanatisme philosophique subtil. Grégoire, en réfutant cette hérésie, se trouve conduit à approfondir le paradoxe de l’Incarnation.
La psychologie clinique transculturelle
Authors: Sturm Gesine
Published: May 2024

Cette fiche propose une brève introduction aux fondements conceptuels et aux orientations permettant de penser la question culturelle dans la clinique. Trois conceptions sont discutées dans leurs implications pour le travail psychologique : la culture en tant que système symbolique, la culture en tant que manière de définir des appartenances, la culture dans le sens d’un « raffinement » des productions culturelles.
Le traumatisme psychique chez l’adulte
Authors: Dozio Elisabetta , Laroche-Joubert Mathilde
Published: May 2024

L’individu est façonné par le groupe culturel d’appartenance et les croyances qui y sont associées. La culture permet de donner du sens à l’environnement et à l’expérience individuelle et collective. En cela, elle détermine la nature de l’expérience traumatique et l’expression symptomatologique de l’effraction psychique qui en découle. Le groupe culturel peut incarner l’agent du traumatisme dans les situations de violences de masse, mais constitue également la protection nécessaire pour développer la résilience face au traumatisme.
Psychoalcoologie à l'hôpital
Authors: Menecier Pascal
Published: May 2024

Principe actif de toute boisson alcoolique, l’éthanol est un produit singulier. Sa découverte, sa production artisanale puis industrialisée et concentrée en fait le premier psychotrope consommé dans nos sociétés. Aborder l’histoire de son usage, de la prise en compte de son mésusage, permet de prendre en considération les croyances et représentations diffuses avant d’envisager tout soin alcoologique.
Transition écologique et justice spatiale
Authors: Ducastel Antoine , Bédu Nicolas , Delage Aurélie , Lectard Pauline , Razafimahefa Lala , Rousseau Max , Sanchez Robles Alvaro
Published: May 2024

Les politiques de la transition s’inscrivent-elles dans une approche d’égalité territoriale ? En analysant la distribution des fonds par quatre financeurs publics majeurs, nous souhaitons évaluer la transition écologique en termes de justice spatiale. Pour ce faire, nous mobilisons un cadre d’analyse pluridisciplinaire, déployant des méthodes quantitatives et qualitatives. L’analyse statistique et cartographique nous permet de mettre en évidence des territoires sous-dotés et sur-dotés. Nous cherchons ensuite à identifier les déterminants quantitatifs du captage de financement, avant d’observer les facteurs locaux, de nature qualitative, qui expliquent les inégales capacités des collectivités territoriales à capter les subventions. Au final, l’article montre que la régulation politique locale apparaît cruciale pour comprendre la capacité différenciée des territoires à capter des fonds. Dès lors, l’insuffisante prise en compte de la dimension territoriale par les bailleurs de la transition empêche cette dernière d’apparaître comme un levier de lutte contre les inégalités socio-spatiales.
La contribution des territoires dans le déploiement de l’investissement social
Authors: Michel Eileen , Rouzeau Marc
Published: May 2024

L’investissement social, référence qui se distingue de la protection sociale compensatoire pour privilégier la prévention et le développement du capital humain, alimente bon nombre des réformes des États-providence. Après avoir caractérisé la dimension internationale de son déploiement, cet article met en lumière le cas français. Pour ce faire, il prend l’exemple de la Stratégie nationale de prévention et de lutte contre la pauvreté (SNPLP) et s’appuie sur une enquête documentaire et une campagne d’entretiens menée auprès de 164 acteurs (au niveau national ainsi que dans 6 régions et 13 départements). Dans une perspective multiniveaux, il se penche alors à la fois sur les contributions du territoire national et des territoires infranationaux dans la diffusion de l’investissement social en France.
Hybrid self-supervised monocular visual odometry system based on spatio-temporal features
Authors: Yuan Shuangjie , Zhang Jun , Lin Yujia , Yang Lu
Published: May 2024

For the autonomous and intelligent operation of robots in unknown environments, simultaneous localization and mapping (SLAM) is essential. Since the proposal of visual odometry, the use of visual odometry in the mapping process has greatly advanced the development of pure visual SLAM techniques. However, the main challenges in current monocular odometry algorithms are the poor generalization of traditional methods and the low interpretability of deep learning-based methods. This paper presented a hybrid self-supervised visual monocular odometry framework that combined geometric principles and multi-frame temporal information. Moreover, a post-odometry optimization module was proposed. By using image synthesis techniques to insert synthetic views between the two frames undergoing pose estimation, more accurate inter-frame pose estimation was achieved. Compared to other public monocular algorithms, the proposed approach showed reduced average errors in various scene sequences, with a translation error of $ 2.211\% $ and a rotation error of $ 0.418\; ^{\circ}/100m $. With the help of the proposed optimizer, the precision of the odometry algorithm was further improved, with a relative decrease of approximately 10$ \% $ intranslation error and 15$ \% $ in rotation error.
IZVORI STRESA KOD UDOMITELJA ZA DJECU − PREGLED DOSADAŠNJIH ISTRAŽIVANJA
Authors: Barišić Anita
Published: May 2024

Foster carers have a specific task related to providing care to children who have experienced traumatic experiences and who, due to their complex needs, require longer periods of care. This paper aims to show the most common sources of stress of traditional and specialized foster carers for children that are mentioned in scientific papers published in Ebsco, Sage and Google Scholar databases and on the Croatian scientific portal Hrčak in the period from 2002 to 2022. A total of 33 papers were analysed, of which 17 papers are available on the scientific portal Hrčak and 16 papers are available in the databases Ebsco, Sage and Google Scholar. The identification of the sources of stress in foster parents for children is approached from the transactional model of stress according to the author Richard S. Lazarus, and the sources of stress in this paper are divided according to the characteristics of the person (foster and foster child) and the nature of external events. In addition to some sociodemographic characteristics, providing care to children with more pronounced emotional or behavioural difficulties is the most common source of stress for foster parents, which is related to the characteristics of the foster child. Sources of stress related to the characteristics of foster parents are feelings of professional incompetence, while sources of stress related to external events refer to working conditions and relationships with others. In our paper, sources of stress related to the organization of work of foster parents can still be identified. Key words: sources of stress; foster parents for children; social housing service
La rêverie comme agent thérapeutique chez les Aborigènes de Sydney
Authors: Tasia Edgar
Published: May 2024

Cette contribution étudie le lien actuel entretenu par certains Aborigènes vivant en milieu urbain avec, d’une part, la rêverie (comprise comme technologie culturelle d’altération de conscience) et, d’autre part, le Dreaming (cette cosmologie propre aux cultures aborigènes d’Australie). Je postule, à l’aide de l’exemple ethnographique que constitue l’étude de la pratique du Dadirri au sein d’un groupe de parole indigène, qu’il existe aujourd’hui une réappropriation originale de ce lien qui prend racine dans un contexte culturel contemporain et postcolonial singulier. Au terme de cette démonstration, et à l’aune des découvertes mises en lumière, le texte interroge de manière rétrospective et innovante la fonction ancestrale du rêve et de la rêverie – et notamment sa fonction thérapeutique – au sein des cultures aborigènes d’Australie.
Dans les paradoxes du virage numérique en santé
Authors: Ghis Malfilatre Marie
Published: May 2024

De nombreux acteurs – politiques, industriels, médicaux – plaident pour « accélérer le virage numérique » en santé. Dans un contexte de réduction des ressources et des dépenses allouées à ce secteur, de crise de l’hôpital public et de la médecine libérale, la transformation numérique du système de santé suscite de fortes attentes et porte de nombreuses promesses. Cet article propose d’analyser le déploiement de la santé numérique en partant du point de vue des activités concrètes des médecins qui la mettent en œuvre et des contextes dans lesquels elle prend place, ainsi que les différents sens que les professionnels lui donnent. Pour ce faire, nous nous appuyons sur une ethnographie du travail médical au sein de SOS Médecins, la médecine d’urgence libérale offrant un terrain original pour étudier les manières dont les acteurs se saisissent des technologies numériques et les conditions dans lesquelles ces dernières peuvent être investies de qualités soignantes.
Les sciences citoyennes à l’ère de la santé numérique
Authors: Moizard-Lanvin Justyna
Published: May 2024

Cet article s’intéresse aux reconfigurations du problème de la pollution de l’air en lien avec l’émergence de nouvelles mobilisations citoyennes, impulsées par l’essor du marché des micro-capteurs numériques. Ce faisant, il met plus spécifiquement le curseur de l’étude non plus sur le rôle des collectifs mobilisés mais sur celui des scientifiques et des acteurs institutionnels impliqués dans les projets de science citoyenne. En s’appuyant sur une enquête de terrain réalisée à Paris, cette étude met en évidence le fait que les scientifiques et les acteurs institutionnels se joignent aux projets de sciences citoyennes avec leurs propres intérêts et objectifs, différents de ceux portés par les collectifs mobilisés. Il en résulte d’importantes asymétries de pouvoir qui réduisent le rôle des collectifs mobilisés à la collecte de données numériques. Cet article montre comment cette réduction du citoyen à un simple capteur de pollutions environnementales limite la capacité de transformer un projet de science citoyenne en une mobilisation capable de redéfinir et de reconfigurer le problème de la pollution de l’air à l’échelle locale.
Esperanzas y desencantos. La España de Ruedo ibérico y el Viaje al sur de Juan Marsé
Authors: Andreu-Miralles Xavier , Santamaría Colmenero Sara
Published: May 2024

En los años sesenta del siglo xx el régimen franquista puso en marcha una campaña para construir una imagen de la nación española que tenía por objetivo blanquear al régimen y anclar el país a Europa. La oposición, fundamentalmente desde el exilio, trató de contestar esa imagen de España, construyendo un discurso crítico contra el régimen, que se confrontaba con la imagen edulcorada de la España franquista. Juan Marsé, en colaboración con la editorial Ruedo ibérico, trató de contribuir a esa tarea con una obra que, sin embargo, no llegó a publicarse entonces, sino póstumamente en 2020: Viaje al sur. Su retrato del pueblo español es más oscuro que el de otros proyectos de la editorial. El optimismo hacia las clases trabajadoras y a su movilización contra el régimen perceptible en estos proyectos editoriales parece quebrarse en el relato de un «escritor del pueblo» que nunca quiso serlo. En este sentido, la mirada de Marsé, al mismo tiempo, una idealización del pueblo español que el autor barcelonés no estaba dispuesto a alimentar. Esta es, quizás, una de las razones por las cuales la editorial decidió finalmente dejar en un cajón el que Marsé pensaba que era su mejor libro hasta el momento. Este texto estudia el diálogo que establece el escritor entre las diversas formas de entender lo español y lo andaluz en el marco de la España del desarrollismo. Para ello, analiza Viaje al sur en su contexto histórico y en diálogo con otros proyectos editoriales de Ruedo ibérico. Reconstruye los diversos discursos sobre la nación española respecto a los cuales Marsé cimentó su propia concepción de España y de sus compatriotas. El artículo plantea que esta concepción de los españoles ayuda a entender la trayectoria del autor y sus encuentros y desencuentros con quienes querían que fuera la voz de la España trabajadora.
¿Podía el Preste Juan bloquear o desviar las aguas del Nilo?Fortuna de una leyenda medieval en la Península Ibérica a lo largo de los siglos xvi y xvii
Authors: de Lama de la Cruz Víctor
Published: May 2024

En los siglos xvi y xvii se difundió ampliamente por España y Portugal la leyenda según la cual el Preste Juan podría bloquear o desviar el curso del Nilo, hecho que ocasionaría funestas consecuencias para Egipto. Para conocer los orígenes de esta leyenda en Occidente, debemos remontarnos a principios del siglo xiv, cuando se tuvo el convencimiento de que los dominios de este emperador se encontraban en tierras africanas, concretamente en Etiopía. Pero lo que no podían sospechar los viajeros occidentales es que ya circulaban versiones de dicha leyenda mucho antes de que se situase en África el reino del Preste Juan, incluso con antelación a la aparición en la escena política del siglo xii de este rey sacerdote que vendría a vengar a los reinos cristianos del fracaso de las Cruzadas.
Characters in Search of an Ending in Laura Wade’s Stage Adaptation of Jane Austen’s The Watsons
Authors: Parey Armelle
Published: May 2024

This article proposes to consider the notion of transmission in relation to the process of adaptation since adaptations, whatever form they take, bring a text—transmit a text—to a new audience while submitting the text to a process of transformation and appropriation. Jane Austen’s relatively small body of work has given rise to countless television or film adaptations, stage adaptations but also narrative expansions and continuations that all revisit Austen’s characters and plots. The intermedial adaptation under consideration here is that of a fragment written by Austen in 1805, The Watsons, by English playwright and screenwriter Laura Wade in 2018. The aim of this article is to examine how Wade’s play establishes and reflects on its own status as an adaptation in the twenty-first century while tackling the issue of authenticity inevitably raised by adaptation and continuation. Following a few remarks on the adaptation of unfinished texts, I will examine the metafiction and metatheatricality at work before focusing on the issue of the ending.
Espaces et politiques de la frontière au Groenland. Les projets miniers comme voie de territorialisation de l’État ?
Authors: Bailleul Pia
Published: May 2024

Depuis les années 1990, le Groenland développe l’industrie minière autour de la « zone frontière », stratégie d’exploration et de cartographie des sous-sols. Cette orientation vise à permettre l’accession économique à l’indépendance vis-à-vis du Danemark, fondant une définition nationaliste de la frontière des ressources. Le projet minier de Kuannersuit, qui permettrait d’amorcer la bascule vers l’exploitation, génère pourtant entre 2013 et 2021 une opposition sociale massive. S’appuyant sur des données ethnographiques relatives à ce conflit récoltées entre 2016 et 2022, ainsi que sur des documents industriels établis par la compagnie minière, cet article examine ce conflit à l’aune de son engagement dans cette frontière nationale. De quelles manières l’intervention industrielle affecte-t-elle son déploiement, et dans quelle mesure l’État opère-t-il sa propre territorialisation par le développement industriel ? L’article souligne d’abord le phénomène de redéfinition spatiale autour d’un volume de ressources contrôlées par l’État – un volume frontalier – généré par l’enclavement minier. Il analyse ensuite la territorialisation par la décharge au secteur privé. Il interroge pour finir le paradoxe de cette frontière se faisant simultanément espace de ressources et de régulation étatique, et espace de spéculation et d’appropriation marchande. Il se veut ainsi une contribution à la littérature sur les zones frontières et l’extractivisme.
Processus de marchandisation de la faune sauvage, tensions et conflits dans le parc transfrontalier du Grand Limpopo (parc national Kruger en Afrique du Sud et parc national du Limpopo au Mozambique)
Authors: Mazzero Hugo
Published: May 2024

Dans cet article, nous analysons les conséquences de la coprésence d’acteurs variés (populations locales, acteurs de la conservation, touristes) au sein du parc du Grand Limpopo en termes d’utilisation de l’espace et des ressources, en l’occurrence la faune sauvage. L’article porte plus précisément sur les liens de coopération et les relations transfrontalières entre le parc national Kruger en Afrique du Sud et le parc national du Limpopo au Mozambique, deux parcs nationaux contigus qui font l’objet d’un processus de conservation transfrontalière (parc du Grand Limpopo) à partir de 2002. L’objectif de l’article est de mettre en perspective différents processus de marchandisation de la faune sauvage (tourisme de vision, mode de production conservationniste, braconnage), et d’analyser dans quelle mesure ces processus sont, à la fois, un révélateur et un amplificateur des tensions et des conflits qui existent entre les catégories d’acteurs de part et d’autre de la frontière entre l’Afrique du Sud et le Mozambique. Après avoir exposé des éléments d’analyse sur les forts contrastes qui existent entre les deux parcs nationaux en termes de développement et de densité faunistique ; nous proposons une typologie des catégories d’acteurs en présence pensées en fonction de différents rapports à la faune sauvage. Enfin, l’article analyse les tensions et les conflits qui résultent de la diversité des logiques et des pratiques spatiales questionnant la pérennité du processus de conservation transfrontalière en cours. Cette recherche propose une analyse conjointe des dynamiques liées aux frontières et aux politiques de conservation en s’appuyant notamment sur des données empiriques. Nous nous basons sur des données issues d’enquêtes sur le terrain en Afrique du Sud et au Mozambique, auprès de touristes dans le parc national Kruger (n = 135), de communautés locales dans le parc national Limpopo (n = 87), et de personnes liées à la gestion des parcs ou au secteur de la conservation (n = 15).
Effects of Physical Activity on College Students' Positive Psychology
Authors: Pan Yang , Wang Qing , Wang Simeng , Peng Yuan
Published: May 2024

Physical activities are increasingly practiced among college students and may be effective in improving positive psychology. This article conducted a meta-analysis of RCTs to systematically evaluate the effects of physical activities on positive psychology in college students. Two authors conducted independent literature searches in electronic databases from the first available date to December 2023. Then, eligible studies were selected, data for meta‐analysis were extracted, and the risk of bias was evaluated. Eight independent RCTs with 697 participants were included. Meta-analysis showed that physical activities significantly improved the level of self-efficacy, positive emotion and well-being among college students. However, physical activities did not significantly enhance the resilience in college students. Clinical evidence from current RCTs indicates that physical activities could enhance the positive psychology in college students.
Estimating Porosity of Agglomerated Products Using Optimized Sphere Packing
Authors: Marmolejo-Saucedo Jose Antonio , Litvinchev Igor , Bizhanov Aitber , Yaskov Georgiy , Romanova Tetyana
Published: May 2024

The article presents the results of studying the dynamics of changes in the porosity of two-component briquettes and pellets depending on the size of particles and the proportions of components in the mixture using an optimized packing of spheres. Knowing the patterns of change in the porosity allows to optimize the strength of the briquette and pellets as well as to improve their behavior in the reduction processes in blast furnaces, steel making furnaces and in direct reduction reactors. A computation experiment based on heuristic simulation model was designed to study the change of the estimated porosity under increasing/substituting the number of larger spherical particles in the mixture of spheres. The results obtained made it possible for the first time to reveal the extreme nature of the change in the porosity of the briquette/pellet with the addition of larger particles, depending on the fractional composition of the briquette. The results obtained open up new opportunities for optimizing the placement of fine-grained materials in the charge of metallurgical furnaces.
Reinventing Real Estate: Exploring the Dynamic Landscape of Prop-Tech driven Digital Transformation in the Residential Sector – Lessons for Sri Lanka
Authors: Munasinghe Heshani Vidarshika , Munasinghe Lasika Madhawa
Published: May 2024

This article presents a comprehensive narrative review of published articles focusing on the digital transformation of the residential real estate sector driven by PropTech (Property Technology). The study aims to provide insights into the current state of digitalisation within residential real estate, examining the technological advancements and their impact on various aspects of the market. The review employed a narrative review approach, analysing scholarly articles, industry reports, and reputable online sources that explore the intersection of residential real estate and technology. The findings highlight the revolutionary effect of PropTech on the residential real estate sector, fundamentally changing traditional practices and enhancing operational efficiency. The study identifies key areas where PropTech has made significant strides in the residential real estate sector. These advancements have reshaped the market dynamics, fostering transparency, reducing energy consumption, and increasing access to information for all stakeholders. In conclusion, this narrative review underscores the transformative impact of PropTech on residential real estate, shedding light on its potential to reshape industry practices and improve overall efficiency for developing nations like Sri Lanka. The findings provide valuable insights for researchers, practitioners, policymakers, and industry players seeking to understand and leverage technology in the residential real estate industry.
Applicability of End-to-End Deep Neural Architecture to Sinhala Speech Recognition
Authors: Gamage Buddhi , Pushpananda Randil , Nadungodage Thilini , Weerasinghe Ruvan
Published: May 2024

This research presents a study on the application of end-to-end deep learning models for Automatic Speech Recognition in the Sinhala language, which is characterized by its high inflection and limited resources.We explore two e2e architectures, namely the e2e Lattice-Free Maximum Mutual Information model and the Recurrent Neural Network model, using a restricted dataset. Statistical models with 40 hours of training data are established as baselines for evaluation. Our pretrained endto-end Automatic Speech Recognition models achieved a Word Error Rate of 23.38% by far the best word-error-rate achieved for low resourced Sinhala Language. Our models demonstrate greater contextual independence and faster processing, making them more suitable for general-purpose speech-to-text translation in Sinhala.
Enhancing Social Media Content Analysis with Advanced Topic Modeling Techniques: A Comparative Study
Authors: Nanayakkara A. C. , Thennakoon G. A. D. M.
Published: May 2024

Topic modeling, a pivotal unsupervised machine learning approach, serves as a valuable tool for uncovering latent themes within vast document repositories. It aids in the organization, comprehension, and simplification of extensive textual data while revealing distinctive underlying themes across a corpus of documents. The intrinsic characteristics of social media content, marked by brevity, text-heavy nature, and a lack of structure, often pose methodological challenges in data collection and analysis. In an effort to bridge the realms of computer science and empirical social sciences, this research aims to assess the effectiveness of three distinct topic modeling methodologies: Bidirectional Encoder Representations from Transformers (BERTopic), Non-negative Matrix Factorization (NMF), and Latent Dirichlet Allocation (LDA). While NMF relies on a matrix factorization paradigm and LDA employs a probabilistic framework, BERT-based techniques, which utilize sentence embeddings for topic generation, represent a contemporary innovation. In this study, BERTopic is evaluated with multiple pre-trained sentence embeddings, and the outcomes are rigorously compared with those derived from LDA and NMF methodologies. The study leverages C_V and U_MASS, two vital coherence measures, to evaluate the efficacy of these topic modeling strategies. The research delves into the analysis of various algorithms, elucidating their strengths and limitations within the context of social sciences, using YouTube comments as a benchmark dataset. Notably, this investigation sheds light on the utility of BERTopic and NMF for evaluating YouTube video content disclosure based on specific attributes, thereby enhancing the analysis process and addressing performance concerns.
Comparing the Performance of Machine Learning Algorithms for Emotion Classification on Tweets
Authors: Galhena Sugeeshwa S. P. , Atukorale Ajantha S.
Published: May 2024

The rapid increase in the availability of textual content due to Industry Revolution 4.0 has made sentiment analysis an important area of machine learning research . This study aims to develop a mechanism to identify the hidden emotions in textual content, beyond the three basic sentiments of positive , neutral , and negative . Several machine learning approaches to emotion classification , including Naive Bayes classifiers , Support Vector Machines , Regression , Decision Trees , and Random Forests have been explored . The experiments show that simple linear models can achieve high accuracy (up to 90.5%), suggesting that complex algorithms are not always necessary for effective emotion classification . The performance of the models was evaluated using a variety of metrics , including accuracy , precision , recall , F-score and efficiency . The findings suggest that machine learning approaches can be used to effectively identify emotions in textual content, even with simplemodels. This has potential applications in a variety of domains , such as social media analysis , customer service, and healthcare.
Incidental Detection of Synchronous Medullary Thyroid Carcinoma, Pheochromocytoma and Parathyroid Adenoma Leading to Diagnosis of Multiple Endocrine Neoplasia Type 2A
Authors: Zaheer S. , Ahuja S. , Naaz S. , Khan A. A. , Yadav A. K.
Published: May 2024

Introduction: Multiple endocrine neoplasia type 2 (MEN2) is an autosomal dominant neoplastic syndrome with an estimated prevalence of 1 per 30,000 in the general population. MEN2 is subclassified into two subtypes: 2A (MEN2A) and 2B (MEN2B). MEN2A is a rare disease and the affected patients are generally asymptomatic. Cutaneous lichen amyloidosis is an early clinical marker. The morbidity and mortality in these patients are mainly due to medullary thyroid carcinoma, therefore proper clinical workup is warranted for proper surgical intervention.Case Description: We report a case of sporadic MEN2A with no family history of any thyroid or adrenal tumors. She presented with neck mass and complaints of sweating, breathlessness, tremors and impending doom. Contrast enhanced computed tomography revealed a well-defined smoothly marginated, heterogenous enhancing mass in left lobe of thyroid gland. The patient also had a maculopapular rash on upper back suggestive of cutaneous lichen amyloidosis. A finding of a solid necrotic mass in left suprarenal location of size 6x5x4.5 cm likely of left adrenal origin was also noted. The laboratory parameters including serum calcitonin, plasma metanephrines and parathyroid hormone levels were elevated. TC99m Sestamibi scan revealed a left inferior parathyroid adenoma near lower pole of left thyroid lobe. She underwent left adrenalectomy and total thyroidectomy with central neck dissection one month apart. Histopathological examination confirmed the presence of synchronous medullary thyroid carcinoma (MTC), pheochromocytoma and parathyroid adenoma.Conclusion: This case report highlights the importance of recognizing the clinical manifestations of MEN2A. Early diagnosis with proper and complete workup allows for timely and proper intervention and decrease the morbidity and mortality associated with MEN2A due to MTC.
A Rare Manifestation of a Rare Disease: Ectopic Cushing’s Syndrome Secondary to Olfactory Neuroblastoma
Authors: Gnanathayalan S. , Karunanayake K. A. S. , Fernando B. M. S. , Yashodara B. M. A. , Bulugahapitiya U.
Published: May 2024

Introduction: Olfactory Neuroblastoma (ONB) is a rare malignant Neuroendocrine tumour. It is rarely reported to cause Ectopic Cushing’s Syndrome (ECS). Here, we report a case of ECS secondary to ONB.Case Description: A 40-year-old lady presented with right sided focal seizures complicated with status epilepticus. She was diagnosed with Diabetes Mellitus with severe hyperglycaemia three weeks prior to this admission and started on insulin therapy. Investigations revealed severe hypokalaemia. MRI brain showed no focal lesions but there was mucosal thickening in the paranasal sinuses. Other electrolytes and screening for infections were normal.She didn’t have obvious clinical features of Cushing syndrome except generalized monomorphic acne, but further assessment confirmed the diagnosis of severe ACTH dependant Cushing syndrome. MRI pituitary was normal. CECT Chest, Abdomen and Pelvis showed only enlarged adrenal glands. PET/CT revealed FDG avid nasal polyp. Histology of nasal polyp revealed olfactory neuroblastoma. Staging imaging with MRI brain with sinuses and orbits confirmed stage C tumour with extension into ethmoid sinuses and part of the brain. She underwent endoscopic resection of the tumour and radiotherapy.Conclusion: In a case of ECS, we should look beyond the thoracoabdominal region including Sino nasal cavity.
A Case of Non-Islet Cell Tumor Hypoglycemia Due to Gastrointestinal Stromal Tumor in a Patient with Neurofibromatosis
Authors: Gnanathayalan S. W. , Sivageethan S. , Bulugahapitiya U.
Published: May 2024

Introduction: Non-Islet Cell Tumor Hypoglycemia (NICTH) is a rare but serious complication of malignancy leading to recurrent episodes of severe hypoglycemia and impaired quality of life. It is commonly due to mesenchymal and epithelial tumors. The underlying mechanism is overproduction of insulin-like growth factor-2 (IGF-2) and its precursors that activate the insulin receptor. Patients with Neurofibromatosis type 1 (NF-1) have a high incidence of GISTs. GISTs are rare mesenchymal tumors. This case describes a case of NICTH due to GIST with hypoglycemia as the first presentation.Case Description: A 57-year-old man with NF-1 was evaluated for frequent severe hypoglycemic episodes including seizures and loss of consciousness. He also reported reduced appetite, weight loss and melena. He denied history of diabetes mellitus, alcohol abuse or illegal drug abuse. Initial biochemical assessment showed anemia with normal liver, renal and thyroid profile with normal cortisol level. Further laboratory assessment during an episode of hypoglycemia with plasma glucose of 35 mg/dL revealed very low levels of insulin, C-peptide and beta-hydroxybutyrate. IGF-1 was suppressed. Unfortunately, IGF-2 level could not be done due to unavailability in Sri Lankan settings. He had a dramatic rise in blood glucose level with glucagon administration, suggesting the presence of insulin like substance. Computed Tomography (CT) of the chest, abdomen and pelvis showed multiple large liver lesions and a large enhancing paraaortic lesion. Biopsy of the liver lesion with immune staining confirmed metastatic GIST. He was started on imatinib. He is treated with prednisolone for NICTH with good response in hypoglycemia.Conclusion: In patients with an underlying malignancy, if clinical and biochemical findings are compelling for NICTH, additional assessment with IGF-2 levels is not usually necessary to make the diagnosis. The Glucagon challenge test is a supportive investigation for the diagnosis. Glucocorticoids might be effective to control hypoglycemia and improve quality of life if tumor can’t be surgically treated
The Scope for Uplifting Type 1 Dabetes Care in a Resource Limited Setting
Authors: Subasinghe C. J. , Wijesinghe A.
Published: May 2024

No abstract available
VARIATIONS OF ATP CONTENT IN V79 CELLS TREATED WITH CRUDE TOXINS OF Aequorea aequorea (CNIDARIA: HYDROZOA) AND Rhizostoma pulmo (CNIDARIA: SCYPHOZOA). A PRELIMINARY STUDY
Authors: Mariottini G.L. , Carli A.
Published: May 2024

Cnidarian toxins are stored mostly in small capsules (nematocysts) located in tentacles and elsewhere in the body; they are important for the ecology of aquatic environments and also for their impact on some human activities and health, in particular where species lethal for humans live. Though studies about toxic properties of Cnidaria started in the early twentieth century, leading to the formulation of anaphylaxis, an input to the researches on toxic Mediterranean species was given, only during the late '70s, with the occurrence of jellyfish blooms. [...]