bluuebunny/crossref_metadata_2025 huggingface dataset:
Yi Jing, des enjeux face à la transition : des contraires à l’harmonie
Authors: Zhang Yanmei
Published: April 2024

Notre identité n’est pas construite une fois pour toutes, elle se développe tout au long de l’existence au monde. Autrement dit, « il se trouve autant de différences de nous à nous-mêmes que de nous à autrui » (Montaigne) face à la complexité des transitions intérieures et extérieures. Seulement, pour atteindre l’équilibre, notre objectif est de s’adapter aux contraires au lieu de s’en détacher. Cela est également le cas dans le Yi Jing, qui met l’accent sur l’idée de l’unité du ciel et de l’homme, à savoir l’être-ensemble de la nature et de l’homme selon une modalité harmonieuse. De ce fait, notre intervention analysera la transition conçue à l’intérieur de la pensée philosophique traditionnelle chinoise (soit le Yin-yang) par rapport à ses usages largement attestés par la sémiotique contemporaine. À travers cette comparaison contrastive, on veut faire émerger des affinités insoupçonnées dans l’idée qu’on est toujours en train de devenir pour essayer de rétablir une harmonie.
Les transitions du croire : de la parabole vers un nouveau modèle sémiotique
Authors: Cervelli Pierluigi
Published: April 2024

Cette contribution a pour objectif d’explorer les stratégies discursives et narratives opérant dans les paraboles, considérées comme des dispositifs de transition « d'un croire à l’autre ». L'intérêt de la parabole dans la problématique des transitions sociales réside dans la particularité du modèle de communication qui est lui sous-jacent, dont l’objet n’est pas le passage d’une quantité d’information mais la transformation du faire des sujets de la communication. La parabole opère, ainsi, en tant que schéma interprétatif d'expériences et en tant que schéma productif de nouvelles actions. Afin d’explorer cette dimension où la pragmatique et la sémantique se croisent, mon analyse sera conduite en analysant, avec la méthodologie de la sémiotique structurale et générative, un corpus constitué d’un film de Pier Paolo Pasolini (Uccellacci e Uccellini) et les pratiques de protestation de Danilo Dolci, l'intellectuel italien qui demandait l'application de la nouvelle constitution démocratique après la deuxième guerre mondiale.
Écologie et monde de la vie
Authors: Bordron Jean-François
Published: April 2024

Dans cette contribution nous présentons les différents niveaux d’objectivation les plus souvent convoqués dans les discussions concernant l’écologie et les sciences de la nature. Ce parcours nous mène au monde de la vie c’est-à-dire au domaine du sens issu plus particulièrement de la perception et des sentiments qui l’accompagnent.
La transition écologique. Des mots pour la faire ?
Authors: Duteil Carine , Picard Nicolas
Published: April 2024

L’article interroge la place des sciences dans la société et la posture du scientifique dans la sphère médiatico-politique, à travers le traitement de la problématique écologique. Les processus en jeu dans la compréhension de la problématique environnementale sont étudiés à l’aide des outils de la sémiotique narrative, de la pragmatique et de la sémantique textuelle.
Diataxe. De l’activité configuratrice à la saisie des transitions
Authors: Basso Fossali Pierluigi
Published: April 2024

Notre contribution vise à problématiser les pratiques sémiotiques lorsque l’activité configuratrice, paradigme d’une visée perceptive ou d’une énonciation, doit céder la place à une saisie et à une valorisation des transitions. Ces dernières semblent échapper à la fois à une organisation paratactique d’éléments catégorisés à l’avance (effets de coordination, juxtaposition, accumulation, etc.) et à une structuration hypotactique à même d’imposer un ordre intégrateur. Entre ces deux logiques syntaxiques s’introduirait une solution dans laquelle la signification n’a pas la structuration méréologique typique des langages « digitaux » (caractérisés par des unités discrètes), mais possède plutôt une sorte de diataxe, laquelle exemplifierait des écarts sans avoir recours à des proportionnalités ou à des enchâssements préalables. Au contraire d’une prise analytique soutenue par les organisations syntaxiques traditionnelles et la « rection » qu’elles assurent, la diataxe semble promouvoir une synthèse « enharmonique » qui se maintient entre constitution et aspersion, favorisant ainsi la prise en compte de la transition en tant que telle ; une transition entre des valeurs qui ne semblent pas devoir rivaliser pour se partager les valences en jeu. En effet, la transition n’est plus conçue comme une phase d’absence de forme, prélude d’une comparaison qui sera tôt ou tard possible entre un principe organisationnel en amont et un principe en aval ; la transition exemplifie une coalescence formelle qui s’impose aux formes qu’elle héberge et fluidifie, sans se réduire à la notion de continuum. L’article aborde la transition selon trois stratégies différentes : l’observation de la transition, la tentative de la médier, la transition directement incarnée. La dernière stratégie nous amènera à introduire brièvement une étude de cas concernant un tableau anonyme. Il s’agit sans doute de l’œuvre d’un peintre qui a travaillé en reflétant sa propre condition de « transitaire » dans l’évolution incertaine (entre mythe et dénonciation sociale) d’un sujet assez délicat tel quel le suicide.
Espaces et temps de la transition numérique. Une perspective éco-sémiotique
Authors: Biggio Federico
Published: April 2024

Depuis les premières années de l’Internet, la conceptualisation du Web en tant que « écologie » est devenue une habitude interprétative aussi suggestive qu’efficace. Héritant cette analogie et d’autres métaphores, cet article tentera de schématiser les transitions numériques en termes de déplacements topologiques et d’évolutions diachroniques au sein de l’espace du Web. De même, il rendra compte de leur valeur et des investissements passionnels de la part des formes de vie (les utilisateurs). L’objectif est d’esquisser la contribution possible des sciences de la signification dans le processus de réception et d’interprétation de l’écologie des médias computationnels et interconnectés contemporains.
Limfom non-Hodgkin difuz cu celule B şi cancer renal metastatic metacron – prezentare de caz
Authors: Iolanda Goga , Enache Cioc , Elena-Monica Boghici , Mihaela Moraru , Monica-Adriana Nichita , Elena Dumitrescu , Andrei-Daniel Pirlea , Daniela-Luminiţa Zob
Published: April 2024

Among urinary tract tumors, renal cancer is the most common, and regarding histopathological subtype, the clear cell type ranks first. We present the case of a patient who developed two types of solid tumors over an 11-year period. This case also highlights the role of preexisting renal lesions in the development of this cancer, the impact of early intervention on the subsequent course of the disease, as well as the importance of a multidisciplinary team in the treatment of patients with metastatic kidney cancer. Furthermore, despite the complications arising from metastatic renal cancer, the patient maintained a preserved quality of life almost two years after diagnosis.
Precauţii în tratamentul stomatologic al copiilor cu anemii carenţiale – consideraţii generale
Authors: Preda Diana Monica , Mirică Alexandra , Denisa-Iulia Dănilă , Cozubaş Roxana , Alexandra Coroleucă
Published: April 2024

One-fourth of the global population suffer from anemia, with iron deficiency being the main reason; it affects both sexes almost equally, with a slight preponderance of women being afflicted. Anemia can be caused by a wide range of conditions and circumstances, and it can present both orally and systemically. Reduced red blood cell count and/or hemoglobin concentration, or disruption in their function, which finally results in reduced oxygen delivery to tissues, are all defining characteristics of anemia. Anemia is linked to decreased well-being, poor cognitive function, and persistent fatigue. The orofacial signs and symptoms include magenta tongue, midfacial overgrowth, angular stomatitis, atrophic glossitis, paresthesia/anesthesia of the mental nerve, dysphagia, osteosclerosis, and conjunctiva and facial pallor. Common orofacial manifestations also include conjunctival hemorrhage, nose bleeding, spontaneous and posttraumatic gingival hemorrhage, and persistent post-extraction bleeding. Patients with anemia require multidisciplinary
care. Consequently, the dentist must have a solid awareness of this disorder, with a focus on warning indicators, dental management, and appropriate communication with the patient’s physician.
Multifocal Non-Hodgkin’s Lymphoma of the Testis and the Waldeyer’s Ring: A Rare Presentation
Authors:   Department of ENT and Head and Neck Surgeon, District General Hospital Matale, Sri Lanka, MW Zaffarullah , HN Eliyapura ,   Department of ENT and Head and Neck Surgeon, District General Hospital Matale, Sri Lanka
Published: April 2024

Waldeyer’s ring non-Hodgkin’s lymphoma (WR-NHL) is uncommon and of that, base of the tongue lymphoma is rare. Similarly testicular NHL too is rare. We report an unusual case of multifocal base of the tongue and testicular B-cell NHL found simultaneously, which was confirmed by biopsy and immunohistochemistry. This article serves to illustrate the existence of multifocal primaries of NHL in extremely rare extra-nodal sites. Familiarity with such association will help detect multifocal NHL and staging, which has a direct impact on the management.
Electrosynthesis of iron-based metal-organic materials with bis(salicylic acid) derivatives
Authors: Realista Sara , Reis Ana R. , Borralho Duarte , Corregidor Victoria , Alves Luís C. , Magalhães Sérgio , Nunes Telmo , Viana Ana S. , Pires João , Ferraria Ana M. , Botelho do Rego Ana M. , Martinho Paulo N.
Published: April 2024

Continuous advancements in understanding and controlling surface functionalisation and properties empower materials scientists to design materials with tailored characteristics, improved performance, and enhanced functionality, thereby expanding scientific knowledge and technological progress. This research paper presents the synthesis of two new metal-organic material-based films using the cathodic electrodeposition method. In contrast with the anodic deposition method, the cathodic deposition method offers the advantage of using non-metal electrode substrates and various metal ions, a unique aspect not yet fully explored. The study investigates the effects of linker length using 2,5-dihydroxyterephthalic acid (DOBDC) and 3,3'-dihydroxybiphenyl-4,4'-dicarboxylic acid (BPP) as organic linkers and iron(III) as the metal node for the structures. The films' electrochemical behaviour, characterisation through techniques like infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, X-Ray powder diffraction and grazing-Incidence small-angle X-ray scattering and particle-induced X-ray emission, as well as results from cyclic voltammetry studies, are discussed. The films were found to be nearly amorphous with specific grain sizes, revealing heterogeneity in composition and thickness. The unique synthesis method and comprehensive characterisation offer insights into the potential of electrosynthesis for designing functional materials and encourage further exploration of various synthesis conditions and metal ions.
Microplate-Based Enzymatic Activity Assay Protocol Powered by Activity-Based Probes
Authors: Porta Exequiel , Kalesh Karunakaran , Isern Jaime , Steel Patrick
Published: April 2024

Identifying new enzymes and gaining insights into their mode of action (and inhibition) is a critical step in drug discovery. In this chapter, we describe a novel methodology that accelerates this process by combining the precision of Activity-Based Protein Profiling (ABPP) with the efficiency of microplate assay technology. Central to this approach is the use of competitive ABPP, which utilizes an activity-based probe (ABP) to directly observe and characterize the interactions between inhibitors and an enzyme. In this study, we use an in-house fluorophosphonate (FP)-based probe, as an example of an electrophilic probe, and pig liver esterase (PLE), as a model enzyme. Simple chemical modification of PLE to introduce a streptavidin tag enables its immobilization and presentation on a biotinylated assay plate. Subsequent competitive ABPP experiments using FP probes and a commercially derived compound library can be run in parallel. This setup allows for the identification of new inhibitors and the estimation of IC50 values in a single operation. This chapter provides a comprehensive protocol for the synthesis of ABPP probes, preparation of enzyme solutions, and execution of plate-based assays. It offers a robust platform for discovering and characterizing novel inhibitors of enzymes with unknown structures or substrate specificities. By applying this technique, we not only expedite the identification of potential drug candidates but also gain deeper insights into their modes of action, thereby enhancing our understanding of their therapeutic potential.
Synthesis of alkyne- and azide-functionalised aziridine and epoxide carbocycles for development of selective glucuronidase mechanism-based inhibitors
Authors: Ehren Helena , Jongkees Seino , Wennekes Tom
Published: April 2024

Heparanase (HPSE) is an endo-acting beta-glucuronidase and the only known enzyme responsible for the regulation of extracellular heparan sulfate (HS) structures, a glycosaminoglycan (GAG) occurring in conjugation with a protein class called heparan sulfate proteoglycans (HSPGs) in the extracellular matrix (ECM). The enzyme is found to be significantly upregulated in aggressive cancer types aiding cell proliferation by increased degradation of HS. Inhibition of HPSE reduces cancer growth making it an interesting druggable target for cancer treatment and diagnostics. Only few of the known efficient HPSE inhibitors have progressed through clinical studies and none of them has been approved yet. We here present the synthesis of three cyclophellitol scaffolds, based on known mechanism-based inhibitors of HPSE. These novel scaffolds are amenable to facile elaboration via copper-catalysed azide-alkyne cycloadditions to aid in exploring the structure-activity relationship for selective inhibitors of HPSE.
Optimal Flow and Scaling Laws for Power-Law Fluids in Elliptical Cross-Section Self-Similar Tree-Like Networks
Authors: Garg Ashish , Mishra Himanshu , Pattanayek Sudip K.
Published: April 2024

Tree-like self-similar branching networks with power-law fluid flow in elliptical cross-sectional tubes are ubiquitous in nature and engineered systems. This study optimizes flow conductance within these networks under tube-volume and tube's surface-area constraints for fully developed laminar power-law fluid flow in elliptical cross-sectional tubes. We identify key network parameters influencing flow conductance and find that the efficient flow occurs when a specific ratio of the semi-major or semi-minor axis lengths is achieved. This ratio depends on the number of daughter branches splitting at each junction (bifurcation number $N$) and the fluid's power-law index $n$. This study extends the Hess-Murray's law to non-Newtonian fluids (thinning and thickening fluids) with arbitrary branch numbers for elliptical cross-sectional tubes. We find that the maximum flow conductance occurs when a non-dimensional semi-major or semi-minor axis length ratio $\beta^*$ satisfies $\beta^* = N^{-1/3}$, and $\beta^* = N^{-(n+1)/(3n+2)}$ under constrained-volume and constrained tube's surface-area, respectively. When semi-major and semi-minor axis are equal, our findings are validated through experiments, and theory under limiting case of circular tube. These insights provide important design principles for developing efficient and optimal transport and flow systems inspired by nature's and engineered intricate networks.
Illuminating Anions in Biology with Genetically Encoded Fluorescent Biosensors
Authors: Cook Mariah , Phelps Shelby , Tutol Jasmine , Adams Derik , Dodani Sheel
Published: April 2024

Anions are critical to all life forms. Anions can be absorbed as nutrients or biosynthesized. Anions shape a spectrum of fundamental biological processes at the organismal, cellular, and subcellular scales. Genetically encoded fluorescent biosensors can capture anions in action across time and space dimensions with microscopy. The firsts of such technologies were reported more than 20 years for monoatomic chloride and polyatomic cAMP anions. However, the recent boom of anion biosensors illuminates the unknowns and opportunities that remain for toolmakers and end users to meet across the aisle to spur innovations in biosensor designs and applications for discovery anion biology. In a first-of-its-kind review, we will canvas progress made over the last three years for biologically relevant anions that can be classified as halides, oxyanions, carboxylates, and nucleotides.
Global study on tobacco use among youth 13–15 years old in the Russian Federation: dynamic surveillance 2004–2021
Authors: Salagay Oleg  O. , Sakharova Galina M. , Antonov Nikolay S.
Published: April 2024

The article is devoted to the analysis of the results of the global surveys among youth 13–15 years old on tobacco consumption, conducted in 2004, 2015, 2021 in Khabarovsk, Novosibirsk, Cheboksary, Moscow, Pskov and the Russian Federation. The dynamics and trends in consumption of tobacco, electronic nicotine delivery systems (ENDS) and heated tobacco products (HTPs) are analyzed.
Materials and methods. The surveys used representative samples formed on the basis of all public schools. In 2004, 2015 and 2021 regional sampling included two stages. In 2021 national sampling included three stages: the selection of municipalities, schools and classes. All students of the selected classes were asked. The surveys used the same questionnaire. The total number of respondents – 38 345, the overall response rate – more than 90%.
Results. In the Russian Federation, in 2004–2021 among students aged 13–15, the prevalence of tobacco consumption decreased from 27.3 to 11.0%, passive smoking in homes from 76.4 to 23.1%, in closed public places from 89.4 to 23.7%. The consumption of ENDS and HTPs increased up to 16.7 and 3.5% respectively. Similar trends in consumption of products, passive smoking were identified in all the cities.
Conclusion. The adoption in 2013 of the Federal Law "On protecting the health of citizens from the effects of second hand tobacco smoke, the consequences of tobacco consumption or the consumption of nicotine-containing products" had a significant impact on tobacco use by adolescents and reduced the prevalence of tobacco consumption and passive smoking among them by 3 times.
On the formation of Russian pulmonology: the development of the doctrine of lung diseases (first half of the 20th century)
Authors: Borodulin Vladimir I. , Banzelyuk Egor  N. , Topolyanskiy Aleksey V.
Published: April 2024

The articles on the history of Russian pulmonology presented in the historical, medical and therapeutic literature contain materials for this history, but their authors did not solve the problem of its consistent presentation, highlighting the stages of formation and founders. The authors of this study critically reviewed the literary and archival primary sources, for the first time proposed the identification of three stages in the development of Russian pulmonology and indicated eight of its founders at these stages. The abundance of material did not allow us to present it in one article. This article is devoted to the 1st stage of the history of pulmonology – the formation of the doctrine of lung diseases. The second (development of pulmonology as an independent scientific direction in internal diseases) and the third (organizational design of pulmonology as a new independent clinical scientific and educational discipline and medical specialty, i.e. its institutionalization) stages will be discussed in the next articles.
Blood eosinophilia in patients with severe bronchial asthma and chronic polypous rhinosinusitis treated with dupilumab: A review
Authors: Petukhova Anna Yu. , Gromov Aleksey S. , Solovyov Robert V. , Filippova Svetlana G. , Prokopieva Elmira R.
Published: April 2024

Bronchial asthma and chronic polypous rhinosinusitis are diseases associated with a T2-inflammatory immune response. These nosologies can be combined, creating the preconditions for a more severe course of multimorbidity, requiring the use of genetic engineering biological therapy. Dupilumab is a monoclonal antibody that can specifically bind to the alpha subunit of the interleukin-4 receptor and block the action of interleukins 4 and 13, which play a key role in the development of T2 inflammation. Numerous studies have demonstrated the high effectiveness of this medicament. The use of dupilumab in some cases may be accompanied by an increase in eosinophils in the blood. This article presents scientific base and our own experience in treating patients with dupilumab-associated eosinophilia, in addition we describe an algorithm for examining this group of patients for the purpose of timely diagnosis of diseases such as eosinophilic granulomatosis with polyangiitis, eosinophilic pneumonia, etc. It should be noted that in the most cases eosinophilia during targeted therapy with dupilumab is temporary and does not cause clinical manifestations.
Erratum in "Point-of-Care Blood Glucose Testing: Post-Market Performance Assessment of the Accu-Chek Inform II Hospital-Use Glucose Meter" (DOI: 10.26442/00403660.2023.12.202522)
Authors: Petryaykina Elena E. , Mayanskiy Nikolay A. , Demina Elena S. , Karamysheva Irina V. , Gorst Kseniya A. , Timofeev Alexei V.
Published: April 2024

In the article "Point-of-care blood glucose testing: post-market performance assessment of the Accu-Chek Inform II hospital-use glucose meter," published in the Terapevticheskii Arkhiv journal, Vol. 95, No.12, 2023 (DOI: 10.26442/00403660.2023.12.202522), errors were made: the term "measurements at the place of treatment" was changed, as well as the section "Conflict of interest."
At the request of the authors' team, errors in the conflict of interest and the wording of the term have been corrected, and the section "Information about the authors" has been updated. The publisher replaced the original version of the published article with the corrected one; the information on the website was also corrected.
Correct text of the section "Conflict of interest":
Conflict of interest. All authors are not employees or consultants of Roche Diagnostics and have not received any compensation from Roche Diagnostics.
Correct wording of the term in Russian: "измерения по месту лечения". Changes were made to the title of the article in Russian: "Измерения глюкозы по месту лечения: пострегистрационное испытание госпитального глюкометра Акку-Чек Информ II", the text of the abstract, keywords, citation, in the text of the article, and abbreviations.
Information of the place of work has been updated: Center for Laboratory Diagnostics of the Russian Children Clinical Hospital, a Branch of the Pirogov Russian National Research Medical University.
The publisher apologizes to readers and authors for the errors and is confident that the correction of errors will ensure the correct perception and interpretation of the results of the study described in the text.
Análisis de la discusión sobre evaluación de un equipo docente de ingeniería. Aportes a la formación docente continua
Authors: Irupé Falabella María , Rocha Adriana Leticia , Fuhr-Stoessel Ana Beatriz
Published: April 2024

El estudio se enmarca en uno más amplio que evalúa el desarrollo en aula de una propuesta didáctica innovadora en el ciclo superior de una carrera de Ingeniería (Argentina). Se presenta en este trabajo el análisis de una discusión sobre el tema Evaluación entre los integrantes del equipo docente responsable de la innovación. La metodología empleada permite identificar temas sobre los que discuten que resultan significativos para el estudio. Se busca, entre otras cuestiones, analizar el conocimiento profesional de los docentes involucrados e identificar aspectos salientes de las concepciones de evaluación de los docentes y de la forma en que llevan adelante la discusión. Esta es información relevante para pensar acciones de formación docente para los profesionales involucrados en el estudio y para otros profesionales de la docencia universitaria
Rediseño de un programa por competencias. El caso de Electrónica Digital I
Authors: Rossi Roberto Arturo , P. Forestello Rosanna , G. Recabarren Pablo
Published: April 2024

Este artículo comparte una manera de rediseñar el programa de una asignatura de grado explicitando las competencias aportadas, en sinergia con la propuesta del Consejo Federal de Decanos de Ingeniería (CONFEDI) de Argentina. Se trata de una experiencia del equipo docente de la cátedra Electrónica Digital I que reúne alumnos de las Ingenierías Electrónica, en Computación y Biomédica de la Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN) de la Universidad Nacional de Córdoba (UNC). Se parte de la premisa que la asignatura, tal como se desarrolla actualmente, ya aporta a los alumnos una serie de competencias además de sus contenidos conceptuales nodales. El trabajo identifica, justifica y redacta esas competencias aportadas, en un formato centrado en el alumno. Adicionalmente, propone una codificación para facilitar su inclusión dentro de un plan de estudios centrado en el alumno, facilitando detectar competencias vacantes o insuficientes para cumplir con el perfil de egreso.
Proposal for a relationship between educational paradigms and engineering teaching-learning techniques
Authors: Garcés Gonzalo , Forcael Eric
Published: April 2024

Durante siglos, los docentes de ingeniería han utilizado paradigmas educativos y estrategias o técnicas de enseñanza que se asocian principalmente a la repetición de prácticas de enseñanza basadas en modelos exitosos que han visto, sin comprenderlos de manera más exhaustiva. El marco normativo de renombre internacional ABET ha redefinido el papel de la educación de ingenieros, incluidas las habilidades profesionales, como el liderazgo, la comunicación, la comprensión de la ética, la capacidad de trabajar en equipo y la profesionalidad de la ingeniería en un contexto global y social, fomentando el aprendizaje permanente, y el conocimiento de temas contemporáneos. Estas competencias que exigen estas organizaciones, es necesario utilizar técnicas didácticas de enseñanza-aprendizaje en el aula. Como resultado, la necesidad de analizar el papel y el propósito de los educadores de ingeniería, es algo esencial en el contexto de esta investigación, proporcionando una guía para comprender el complejo proceso de enseñanza y aprendizaje de sus estudiantes. Esta revisión bibliográfica, brinda al docente de ingeniería una guía de qué técnica didáctica se puede aplicar en el aula, según las habilidades y destrezas que desee desarrollar en sus alumnos.
Perceptions of the Teaching Profession and Motivation to Teach among Slovenian University Students
Authors: Puklek Levpušček Melita , Depolli Steiner Katja
Published: April 2024

This study examined the perception of the teaching profession among students of social sciences and languages who were finishing their undergraduate studies and intended to continue their studies with a master’s degree. A subgroup of students planning to study for a master’s degree in teaching reported on their motivation to teach and their satisfaction with their career choice, while a subgroup of students who planned to pursue a master’s degree programme without a teaching degree responded to an open-ended question about why they did not want to become teachers. Participants answered the FIT-Choice Scale, which measures twelve motivational factors and six perceptions about the teaching profession. Students recognised teachers’ expertise; however, social status and salary were rated lower, indicating an imbalance between demands and rewards in the teaching profession. Altruistic and intrinsic motives were the main reasons for choosing the teaching profession. Students who will study teaching also rated their ability to become a teacher highly. Extrinsic factors (job transferability, teaching as a fallback career and time for family) were less important. Qualitative thematic analysis of the responses of students who will not study to become a teacher revealed that low intrinsic value (e.g., disinterest in teaching) and low personal utility value (e.g., better professional development elsewhere) were the most common themes. The high job demands due to demanding interactions with children and parents were also mentioned, while the teacher education programme was perceived as excessively extensive. The implications of the study highlight important considerations for policymakers and teacher education programmes.
Inteligencia artificial y pensamiento crítico: caminos para la educación mediática
Authors: Sayad Alexandre Le Voci
Published: April 2024

La primera vez que Alexandre Sayad me comentó sobre el tema de su disertación de maestría y sobre la idea de transformarla en un libro, no imaginé que el debate sobre inteligencia artificial (IA) y su uso en educación estaría tan en boga. La llegada y la popularización de herramientas accesibles de inteligencia artificial generativa y todas sus facetas, expuestas en prototipos de chatbots como ChatGPT —que superó los 100 millones de usuarios en los primeros dos meses tras su lanzamiento, en noviembre del 2022— y Bard de Google, solo refuerzan el hecho de que esta obra llega justo a tiempo. Nada más actual que tratar ese tema desde la óptica de la educación y la importancia de desarrollar el pensamiento crítico, para que todos —estudiantes, educadores y ciudadanos— podamos aprender sobre la IA y sus potencialidades, así como sobre los riesgos intrínsecos a cualquier evolución tecnológica.
Evaluating hybrid model performance in predicting the impact of lockdown on controlling covid-19 cases progression in middle income settings
Authors: Yahaya Mohammed Sani , Benjamin Davou Pam
Published: April 2024

The rapidly spreading COVID-19 pandemic in 2020-2021 affected more than 190 countries, including Nigeria. Following this scenario, countries around the world were monitoring confirmed cases, recovering and dying. In order to reduce the impact of the pandemic, most countries implemented several measures to control the spread of the virus. These include closing schools and borders, shutting down public transport and workplaces, and restricting public gatherings until herd immunity is achieved through vaccination. The breakdown of the health system and the unpredictable nature of human behaviour makes it difficult to predict and evaluate the impact of lockdown on the COVID-19 pandemic in the long term. In light of the above, this study developed Hybrid ANN-CNN and four other models, namely LASSO, ANN, CNN and LSTM, to predict and evaluate the effect of human mobility on COVID-19 confirmed cases. To evaluate the effectiveness of non-pharmaceutical interventions (NPIs) and to predict the spread of COVID-19 confirmed cases, publicly availabledata on human mobility collected by Google and air passenger data were used. In this study, our motivation was to evaluate effect of lockdown on COVID-19 and models that predict the impact of human mobility on COVID-19 confirmed cases based on MSLE, Huber loss, and Log Cosh performance measures. At the end of the experiment, the developed hybrid ANN-CNN outperformed the other four models with MSLE of (0.0022), Huber Loss (0.0014) and Log Cosh (0.0013) respectively. This study serves as an alarm system to provide policy makers with the human mobility factors that can trigger large numbers of cases during a pandemic. This will allow for urgent public action.
A multichannel pulse power supply for pulsed RF amplifiers
Authors: Akhilesh Tripathi , Badapanda M. K. , Rinki Upadhyay , Sachin Rathi , Mahendra Lad
Published: April 2024

A novel 50 V, 40 x 80 A multichannel pulse power supply, consisting of 40 numbers of 50 V, 80 A pulsed output channels for biasing pulsed RF amplifiers, is presented in this manuscript. It employs an FPGA based control and protection unit for generating drive pulses of each pulsed output channel as well as for their protection. This control unit has capability to vary the pulse width of drive pulses of pulsed output channels from 150 µs to 2 ms and frequency from 1 Hz to 50 Hz. The PSpice simulation of individual 50 V, 80 A pulsed output channel has been carried out and simulations results are also presented. Efforts have been put to minimize the inductance in the power paths of all the pulsed output channels and maintain synchronism among them. All the output channels have been simultaneously tested on dummy resistive load at 80 A peak current, 2 ms pulse width and 50 Hz switching frequency. The rise time and fall times of output pulses are observed as < 10 µs and pulse droop is observed as < 1%. The jitter between different output pulses is observed as 60 ns.
Design and analysis of PV-based ZETA converter for EV charging
Authors: Jagadeesh
Published: April 2024

Conversion of Energy plays a crucial role in present-day and requires efficient converter systems. In the conversion of energy process either AC can be converted to DC or DC can be converted to AC. The conversion of energy is done by Power electronic converters which play a key role in photovoltaic systems that are integrated with energy storage systems such as batteries. These converters allow efficient charging and discharging of batteries, voltage regulation, and synchronization with the grid. DC to DC conversion requires DC to DC converters. To obtain the maximum power from the converter the switching of the power electronics device plays a major role by controlling the time duration of the switch and the output power can be maximized. In this work particle swarm metaheuristic algorithm is used to generate the duty ratio and a PWM pulse generator is used to generate the triggering pulses for the switch. A detailed analysis of the ZETA converter is done with PV as input and EV as application. A 5-by-5 PV system with a Zeta converter is simulated in a MATLAB environment. The simulation results show that the ripples in output are minimal which supports the smooth and efficient charging of EV battery which promotes the use of clean energy.
Simulation and analysis of single phase bidirectional totem pole on-board charger
Authors: Khadim Moin Siddiqui , Yash Verma , Shambhavi Tiwari , Brijesh Kumar , Manish Kumar , Raman Kumar
Published: April 2024

In the contemporary era, the global rise of two-wheeler electric vehicles has become pivotal for sustainable development and energy conservation. The necessity for an efficient and effective charger for these vehicles is evident. While numerous two-wheeler electric vehicle chargers are available in the market, this research paper introduces a novel on-board charger tailored specifically for two-wheeler vehicles. The proposed charger integrates totem pole ACDC converter and DC-DC converter to achieve unity power factor and ensure constant current battery charging, thereby enhancing overall efficiency. The incorporation of these converters not only improves charging performance but also facilitates a higher degree of energy conservation. This paper delves into the simulation and analysis of this innovative two-wheeler electric vehicle charger. The use of both converters is instrumental in minimizing harmonics injected into the grid, contributing to enhanced grid compliance. The presented findings suggest that chargers of this nature are poised to gain popularity in future, addressing the growing demand for efficient and sustainable charging solutions for two wheeler electric vehicles.
Review on multi bit flip-flop enhanced shift register: A low power solution for UART
Authors: Swathi Prabhu , Unnathi H. R. , Chethan B. R. , Tejaswini R. , Vaishnavi A. O.
Published: April 2024

This paper details the Verilog HDL- based design of UART modules. Developing UART with a shift register utilizing multibit flip-flops proves to be pragmatic strategy for contemporary VLSI circuits. This work supports not only asynchronous and serial communication but also aligns with essential objectives of minimizing power consumption and reducing overall circuit area. Such integration enhances data transmission efficiency while meeting crucial design considerations in modern electronics
Utilization of the SOA Deep Saturation and Power Averaging Effect to Counteract Intra-Channel Crosstalk in DWDM System
Authors: Dyc Fryderyk M. , Mazurek Paweł , Turkiewicz Jarosław P.
Published: April 2024

The Semiconductor Optical Amplifier (SOA) is a key component of cost-effective short/medium range transmission systems. However it can introduce signal distortions. In this paper the authors investigate the possibility to reduce the signal distortions in SOA operating with the multiple wavelength channels. Using numerical simulations the negative influence of the nonlinear effects, namely cross-gain modulation (XGM) and the patterning effect can be reduced in deep SOA saturation regime. The self-healing effect is pronounced for the 4 or more wavelength channels and the transmitted symbol length longer than double of the SOA recovery time
Enhancing Security of Advanced Metering Infrastructure by Introducing Threshold Attendance Protocol
Authors: Makutunowicz Artur , Konorski Jerzy
Published: April 2024

The industry pushes towards Smart grid systems in order to resolve current limitations of the unidirectional legacy power grid infrastructure. By introducing Advanced Metering Infrastructure (AMI) as an integral part of the Smart grid solution, the utility company obtains an invaluable tool to optimize its network, lower the operational costs, and improve quality of service. Unfortunately, introducing two-way communication poses a security risk to the power grid infrastructure. In this paper the authors consider a Threshold Attendance Protocol (TAP) acting in a reverted security paradigm. Its main idea is to keep the network load at a predictable level at all times. To achieve that, TAP in AMI environment is embedded and the solution using real-life simulation parameters is validated.
Music Recommendation System
Authors: Kostek Bożena , Kaczmarek Andrzej , Spaleniak Paweł , Hoffmann Piotr
Published: April 2024

The paper focuses on optimization vector content feature for the music recommendation system. For the purpose of experiments a database is created consisting of excerpts of music files. They are assigned to 22 classes corresponding to different music genres. Various feature vectors based on low-level signal descriptors are tested and then optimized using correlation analysis and Principal Component Analysis (PCA). Results of the experiments are shown for the variety of feature vectors. Also, a music recommendation system is presented along with its main user interfaces.
A Detector of Sleep Disorders for Using at Home
Authors: Przystup Piotr , Bujnowski Adam , Rumiński Jacek , Wtorek Jerzy
Published: April 2024

Obstructive sleep apnea usually requires all-night examination in a specialized clinic, under the supervision of a medical staff. Because of those requirements it is an expensive and a non-widely utilized test. Moving the examination procedure to patients’ home with automatic analysis algorithms involved will decrease the costs and make it available for larger group of patients. The developed device allows all-night recordings of the following biosignals: three channels ECG, thoracic impedance (respiration), snoring sounds and larynx vibrations. Additional information, like patient’s body position changes and electrodes’ attachment quality are estimated as well. The reproducible and high quality signals are obtained using the developed and unobtrusive device.
Lessons Learned from WiMAX Deployment at INEA
Authors: Kowalik Karol , Dudek Dawid , Kołodziejski Michał , Musznicki Bartosz , Grzybek Eugeniusz , Jarzina Jacek
Published: April 2024

Home broadband access is continuously demanding more bandwidth fueled by video streaming, entertainment and gaming applications. In 2010, a company INEA decided to roll-out new WiMAX-based services aimed to meet the needs of home users across theWielkopolska region of western Poland. It was decided to follow the 802.16e standard and the Time Division Duplexing (TDD) mode that oer the ability to adjust the downlink/uplink ratio and thus are well suited for data transmission. After an extensive testing period of equipment from various vendors, engineers at INEA have chosen the Motorola (currently Cambium Networks) PMP320 solution because it is compact and its components are space- and energy-ecient. The company choice was also influenced by its simple operation, management and installation, which ensured low costs of ownership. So far, this deployment has provided fast and aordable connectivity for Internet and telephony services to around 5,500 households across the 30,000 sq. km region. After 3 years of experience, INEA would like to share the lessons learned from this roll-out.
Adaptive Algorithms Versus Higher Order Cumulants for Identification and Equalization of MC-CDMA
Authors: Zidane Mohammed , Safi Said , Sabri Mohamed , Boumezzough Ahmed , Frikel Miloud
Published: April 2024

In this paper, a comparative study between a blind algorithm, based on higher order cumulants, and adaptive algorithms, i.e. Recursive Least Squares (RLS) and Least Mean Squares (LMS) for MultiCarrier Code Division Multiple Access (MC-CDMA) systems equalization is presented. Two practical frequency-selective fading channels, called Broadband Radio Access Network (BRAN A, BRAN B) normalized for MC-CDMA systems are considered. In the part of MC-CDMA equalization, the Zero Forcing (ZF) and the Minimum Mean Square Error (MMSE) equalizer techniques were used. The simulation results in noisy environment and for different signal to noise ratio (SNR) demonstrate that the blind algorithm gives approximately the same results obtained by adaptive algorithms. However, the proposed algorithm presents the advantage to estimate the impulse response of these channels blindly except that the input excitation is non-Gaussian, with the low calculation cost, compared with the adaptive algorithms exploiting the information of input and output for the impulse response channel estimation.
On-demand QoS and Stability Based Multicast Routing in Mobile Ad Hoc Networks
Authors: Basarkod P. I. , Manvi Sunilkumar S.
Published: April 2024

Finding a connection path that remains stable for suciently longer period is critical in mobile ad hoc networks due to frequent link breaks. In this paper, an on-demand Quality of Service (QoS) and stability based multicast routing (OQSMR) scheme is proposed, which is an extension of ad hoc on-demand multicast routing protocol (ODMRP) to provide QoS support for real time applications. The scheme works as follows. Each node in the network periodically estimates the parameters, i.e., node and link stability factor, bandwidth availability, and delays. Next step is creation of neighbor stability and QoS database at every node by using estimated parameters. The last sequence is multicast path construction by using, route request and route reply packets, and QoS and stability information, i.e., link/node stability factor, bandwidth and delays in route information cache of nodes, and performing route maintenance in case of node mobility and route failures. The simulation results indicate that proposed OQSMR demonstrates reduction in packet overhead, improvement in Packet Delivery Ratio (PDR), and reduction in end-to-end delays as compared to ODMRP, and Enhanced ODMRP (E-ODMRP).
Data and Task Scheduling in Distributed Computing Environments
Authors: Szmajduch Magdalena
Published: April 2024

Data-aware scheduling in today’s large-scale heterogeneous environments has become a major research and engineering issue. Data Grids (DGs), Data Clouds (DCs) and Data Centers are designed for supporting the processing and analysis of massive data, which can be generated by distributed users, devices and computing centers. Data scheduling must be considered jointly with the application scheduling process. It generates a wide family of global optimization problems with the new scheduling criteria including data transmission time, data access and processing times, reliability of the data servers, security in the data processing and data access processes. In this paper, a new version of the Expected Time to Compute Matrix (ETC Matrix) model is defined for independent batch scheduling in physical network in DG and DC environments. In this model, the completion times of the computing nodes are estimated based on the standard ETC Matrix and data transmission times. The proposed model has been empirically evaluated on the static grid scheduling benchmark by using the simple genetic-based schedulers. A simple comparison of the achieved results for two basic scheduling metrics, namely makespan and average flowtime, with the results generated in the case of ignoring the data scheduling phase show the significant impact of the data processing model on the schedule execution times.
Supervised Kernel Principal Component Analysis by Most Expressive Feature Reordering
Authors: Ślot Krzysztof , Adamiak Krzysztof , Duch Piotr , Żurek Dominik
Published: April 2024

The presented paper is concerned with feature space derivation through feature selection. The selection is performed on results of kernel Principal Component Analysis (kPCA) of input data samples. Several criteria that drive feature selection process are introduced and their performance is assessed and compared against the reference approach, which is a combination of kPCA and most expressive feature reordering based on the Fisher linear discriminant criterion. It has been shown that some of the proposed modifications result in generating feature spaces with noticeably better (at the level of approximately 4%) class discrimination properties.
Measuring Electromagnetic Emissions from Active Landslides
Authors: Maniak Krzysztof
Published: April 2024

The paper describes the mechanism of electromagnetic emission generation in active landslides and measuring techniques. Special attention is given to electromagnetic emission fields. The author proposes an original system for measuring both continuous and pulsed magnetic emission of landslides. For such measurements boreholes must be drilled in the landslide. It is essential that the tubing constituting the borehole’s lining be made of a material which does not attenuate magnetic fields. Besides its primary function, i.e. the registration of landslide magnetic field activity, the system can be used for the structural inhomogeneity of rock strata examination subjected to considerable stresses. The results of examinations of active and inactive landslide in Poland are presented. The post-extraction cave in the SMZ Jelsava Mine in Jelsava, Slovakia, is presented too.