bluuebunny/crossref_metadata_2025 huggingface dataset:
A Potential Host Galaxy Association for FRB 20190605C
Authors: Modilim Obinna , Shin Kaitlyn , Masui Kiyoshi , Michilli Daniele , Ibik Adaeze L. , Calzadilla Michael , Bhardwaj Mohit
Published: September 2024

We present a probable host galaxy of the fast radio burst FRB 20190605C, detected by the Canadian Hydrogen Intensity Mapping Experiment. The localization was enabled by saved baseband data; the region contained one galaxy with a photometric redshift consistent with the dispersion measure of the FRB. This galaxy was identified as the most likely host with a Probabilistic Association of Transients to their Hosts probability calculation, finding a probability of association P(O∣x) = 0.913. With Prospector, we used a joint spectro-photometric fit to model stellar mass, star formation rate, metallicity, age, and a spectral energy distribution for the host candidate.
Gemini Near-infrared Photometry for a Sample of Cold Brown Dwarfs Discovered by Backyard Worlds: Planet 9
Authors: Meisner Aaron M. , Leggett S. K. , Logsdon Sarah E. , Allen Michaela B. , Faherty Jacqueline K. , Kirkpatrick J. Davy , Kuchner Marc J. , Schneider Adam C. , Wisniewski John P. ,   The Backyard Worlds: Planet 9 Collaboration
Published: September 2024

We present Gemini Observatory follow-up J-band and K-band photometry for a sample of 16 T/Y dwarf candidates discovered by the Backyard Worlds: Planet 9 citizen science project. The Gemini observations were taken with Gemini-North using the Near-Infrared Imager instrument between 2017 September and 2018 March. Obtaining near-infrared photometry of very cold brown dwarfs is important for enabling and prioritizing future spectroscopic follow-up, particularly in the context of JWST spectroscopy of T and Y dwarfs.
HD 34382: A Photometrically Identified Candidate Centrifugal Magnetosphere Star
Authors: Kiker Thaddaeus , Diaz Veronica , Bouma Luke G. , Shultz Matt , David-Uraz Alexandre , Folsom Colin P.
Published: September 2024

We identify the chemically peculiar B8/9V star HD 34382 as a candidate member of the rare class of rapidly rotating magnetic B stars. TESS photometry shows eclipses and smooth sinusoidal variability with a period of 2.46 days. We supplement this with Keck/HIRES spectroscopy, which shows that this is a Bp star. The data suggest that the star’s photometric variability results from a combination of chemical surface spots and eclipses by dense, magnetically confined plasma clouds, making this star’s behavior analogous to that of stars like σ Ori E. If the star’s magnetic nature is confirmed through spectropolarimetry, then HD 34382 may possess the longest rotational period known for such stars with photometrically detectable centrifugal magnetospheres. Furthermore, the star’s low temperature could make HD 34382 the coolest star of its class in which such detected centrifugal magnetosphere derived photometric variability has been observed, pending such magnetic confirmation.
Pourquoi la pulsion de mort ?
Authors: Lindenmeyer Cristina
Published: September 2024

Clairement nommée en 1920 dans le texte Au-delà du principe de plaisir , la pulsion de mort gagne dans l’œuvre freudienne une grande importance, devenant un concept essentiel pour aborder la clinique. Travailler sur sa pertinence dans les formes actuelles de souffrance psychique, reconnaître comment elle s’est imposée à Freud et dans son œuvre, semble essentiel pour qui veut aborder les problématiques actuelles, surtout aujourd’hui, alors que des tendances se dessinent pour comprendre les symptômes et leurs manifestations cliniques uniquement du point de vue d’un déficit, ou de les réduire aux seules pathologies narcissiques.
Photographier la zone de Paris Aménagement urbain et lecture ethnographique (1930-1950)
Authors: Backouche Isabelle
Published: September 2024

Partant d’une enquête sur l’annexion de la zone à Paris en 1919 et sur les modalités de sa disparition, principalement sous le régime de Vichy, l’article s’appuie sur un corpus de photographies constitué par les services d’urbanisme de la préfecture de la Seine. Il s’agit de remettre en cause l’image misérabiliste de cet espace urbain en utilisant à contre-emploi la photographie. Grâce au croisement avec les dossiers d’archives, l’analyse des usages sociaux successifs des photographies ouvre des pistes pour comprendre pourquoi certaines d’entre elles sont devenues iconiques pour parler de la zone.
Des images contre le déracinement : les photographies des déplacés spéciaux en Union soviétique (1940-1960)
Authors: Tcherneva Irina
Published: September 2024

Près de 800 000 citoyens de pays annexés ou dominés par l’Union soviétique suite aux accords Molotov-Ribbentrop furent déportés en Asie centrale, en Sibérie, dans l’Oural et au nord de la Russie. Cet article se penche sur leurs photographies privées. Quelles sont les temporalités et les raisons de leur création ? Comment qualifier les fonctions sociales de la prise de vues dans ces conditions ? Une articulation de l’histoire sociale des répressions et de l’analyse visuelle permet d’appréhender la photo-graphie comme un ensemble de traces révélatrices des rapports à l’image, à la sphère collective, aux communautés en relégation et aux locaux.
Que faire du casier judiciaire des Gilets jaunes ?
Authors: Codaccioni Vanessa
Published: September 2024

À partir d’une analyse qualitative et quantitative des dossiers de Gilets jaunes arrêtés à Paris, cet article vise à éclairer deux usages possibles des informations relatives aux antécédents judiciaires dans le cadre d’une sociologie de l’engagement : la construction de sociobiographies plus fines d’un côté ; la mise au jour de pratiques manifestantes illégales liées à des savoirs déviants de l’autre.
Manque de sens au travail ? Un éclairage par la reconnaissance au travail
Authors: Roche Alexis
Published: September 2024

Le sens au travail comme la reconnaissance sont des concepts polysémiques. Les appels des salariés à plus de sens au travail s’entremêlent aux demandes de plus de reconnaissance. La perte de sens s’associe à une perte de repère identitaire mêlé au sentiment de ne pas exister, de ne pas évoluer et de ne pas avoir une réelle contribution sociétale. Nous explorons les apports de la reconnaissance au travail dans la perte et dans la création de sens à partir de notre expérience de recherche-intervention et l’illustration d’un cas, une grande association médico-sociale . L’article vise à montrer en quoi, au-delà des « crises » évoquées dans la création de sens, la question du manque de reconnaissance physiologique, relationnelle, de récompense et en termes d’accomplissement social nuit au sens du travail, voire plus généralement au sens de la vie de l’individu. Cette question du sens est fondamentale en gestion. En effet, outre les impacts sur la santé mentale et physique des individus, elle influence directement ou indirectement la performance économique de l’organisation sur des items tels que : turn-over, maladies, stress, bore-out, burn-out, baisse de productivité et d’énergie, baisse d’innovation, erreurs, niveau de coopération et de conflits .
Les invisibles de l’emprise au sein des organisations. Conjonctions énantiologiques et transformation transférentielle
Authors: Bonnet Daniel
Published: September 2024

Cet article propose une contribution ayant pour objet l’analyse de la problématique de la prégnance des emprises de la transformation. Le champ de la recherche est celui des groupes, des organisations et des institutions. L’objet de recherche retenu relativement aux situations de gestion traitées concerne les invisibles de l’emprise appareillant le travail qui se soustrait à la connaissance. Il s’agit, dans les situations traitées, du travail qui détermine la production des dysfonctionnements et des coûts-performances cachés. L’observation de ce phénomène montre que la transformation est régie par des conjonctions énantiologiques mettant en perspective l’emprise des transformations transférentielles. Ces conjonctions sont des objets transformationnels . La recherche valorise les résultats de recherches-interventions d’essence socio-économique réalisées en environnement de coopération inter-organisationnelle. La recherche met en perspective l’appareillage de la transformation transférentielle requis pour convertir les dysfonctionnements et les coûts-performances cachés, comportant de traiter les résistances. La recherche montre quels peuvent être les apports et les contributions de la psychanalyse au management des organisations et de leurs extensions .
Former les enseignant·es à la prise en compte des rapports sociaux dans l’espace du genre : la Toile de l’égalité comme outil d’analyse et d’intervention
Authors: Magni Giorgia , Collet Isabelle , Pont Elena
Published: September 2024

En Suisse, malgré l’affermissement des politiques d’égalité en matière d’éducation, la répartition des élèves dans des filières socialement hiérarchisées est toujours d’actualité. Aux fins de pratiques éducatives plus égalitaires, la Toile de l’égalité a été créée à partir de la pédagogie critique féministe à destination des futur-es enseignant-es, comme un instrument d’analyse des discriminations produites en classe par l’imbrication des rapports sociaux, activés à l’intérieur de l’espace du genre. La base empirique de cet article est constituée de situations d’enseignement révélant des inégalités, et rapportées dans une évaluation par des enseignant-es en formation. Il leur a été demandé d’y apporter des solutions pédagogiques à l’appui des principes de la Toile, sans passer par une déconstruction des stéréotypes. Utilisée comme un outil d’analyse et d’intervention, la Toile s’avère un instrument de dévolution à l’attention des futur-es enseignant-es, puis de leurs élèves.
Le retour de l’affaire Alexandros T et la « quasi-injonction » anti-suit
Authors: Muir Watt Horatia
Published: September 2024

Une juridiction d’un État membre peut refuser de reconnaître et d’exécuter une décision d’une juridiction d’un autre État membre pour cause de contrariété avec l’ordre public, dès lors que cette décision entrave la poursuite d’une procédure pendante devant une autre juridiction de ce premier État membre, en ce qu’elle accorde à l’une des parties une indemnité pécuniaire provisoire au titre des dépens que celle-ci supporte en raison de l’engagement de cette procédure, au motif, d’une part, que l’objet de ladite procédure est couvert par un accord transactionnel, conclu licitement et validé par la juridiction de l’État membre qui a prononcé ladite décision, et, d’autre part, que la juridiction du premier État membre, devant laquelle a été intentée la procédure litigieuse, n’est pas compétente en raison d’une clause attributive de juridiction exclusive.
Workplace Violence and Worker Well-Being: A Preliminary Cross-Sectional Study
Authors: Meyer Holly Ann , Kiydal Danya , Siefert Kyle , Clark Erin , Dondi Amour Cornelius , Abu-Alhaija Dania M. , Davis Kermit G. , Gillespie Gordon Lee
Published: September 2024

Purpose

To investigate the prevalence of workplace violence (WPV) in home health care and long-term care facilities (LTCFs) and explore the relationship between WPV and worker well-being.

Method

A cross-sectional survey was conducted with health care workers in an agency that provided care in homes or LTCFs. Six measures of worker well-being were collected: satisfaction with work and life, work-related rumination, work/family conflict, burnout, and turnover intention. Surveys also assessed type and frequency of WPV.

Results

Seventeen participants completed surveys. Verbal abuse by patients was the most often experienced type of WPV. Employees who reported experiencing WPV had higher burnout and lower satisfaction with work and life.

Conclusion

WPV routinely occurs in home health care and LTCFs and appears to be related to worker well-being. Facility managers who can control WPV will likely impact the well-being of employees. [
Journal of Gerontological Nursing, 50
(11), 44–52.]
Preoperative Mental Health Disorders Affect Opioid Consumption and Perioperative Complications After Total Shoulder Arthroplasty
Authors: Mayfield Cory K. , Abu-Zahra Maya S. , Bolia Ioanna K. , Kotlier Jacob L. , Lin Eric H. , Gamradt Seth C. , Weber Alexander E. , Liu Joseph N. , Petrigliano Frank A.
Published: September 2024

Background

Limited evidence exists regarding the influence of mental health disorders (MHDs) on opioid use and complications after total shoulder arthroplasty (TSA). We aimed to identify the prevalence of common MHDs among patients undergoing anatomic TSA (aTSA) and reverse TSA (rTSA).

Materials and Methods

The Premier Healthcare Database was queried for patients undergoing primary aTSA and rTSA from 2016 to 2020.
International Classification of Diseases, Tenth Revision,
diagnosis codes were used to identify MHDs. Primary outcomes included the prevalence of MHDs, perioperative opioid consumption, and 90-day risk of postoperative complications, revision, and readmission. Bivariate and multivariate regression analyses were performed to assess 90-day risk of primary endpoints while controlling for potential confounders. Statistical significance was defined as
P
<.05.

Results

From 2016 to 2020, 49,997 of 144,725 (34.55%) patients undergoing primary TSA had at least one diagnosed MHD. The most prevalent were depression (17.03%), anxiety (16.75%), and substance use disorder (10.20%). Patients with a MHD had higher mean hospital costs ($75,984±$43,129 vs $73,316±$39,046,
P
<.0001), longer mean length of stay (1.95±2.25 days vs 1.61±1.51 days,
P
<.0001), and higher mean total postoperative opioid use (72.00±231.55 morphine milligram equivalents [MMEs] vs 59.32±127.31 MMEs,
P
<.0001). Periprosthetic fractures (odds ratio, 1.20;
P
=.041), dislocation (odds ratio, 1.12;
P
=.042), and 90-day readmission rates (odds ratio, 1.26;
P
<.001) were significantly higher among patients with a MHD.

Conclusion

This study found that MHDs are associated with significantly increased perioperative opioid consumption, medical and surgical complication rates, and risk of readmission after TSA. Recognition and optimization of MHDs is critical to minimizing complications and opioid consumption after TSA. [
Orthopedics
. 2024;47(6):e303–e310.]
Assessing the Accuracy and Reliability of the Fluoroscopic Ruler for Comminuted Femur Fractures: A Cadaveric Study
Authors: Wahlig Brian D. , Kuttner Nicolas P. , Kouzel-Martinez Frank A. , Broida Samuel E. , Sems Stephen A. , Hidden Krystin A. , Yuan Brandon J.
Published: September 2024

Background

Fixation of comminuted femur fractures may result in limb length discrepancy. Intraoperative fluoroscopic measurement of the contralateral femur with a ruler is commonly performed to establish a reference for femoral length. No evidence regarding the reliability and accuracy of this technique exists. This study aimed to assess the accuracy and interrater reliability of a fluoroscopic ruler in obtaining correct femoral length in a comminuted femoral shaft fracture model.

Materials and Methods

Approximately 5 cm of bone was removed from the left femoral diaphyses of 8 cadavers. Seven orthopedic surgery residents and 2 attendings measured the length of the intact contralateral femur using a ruler under fluoroscopy. The ruler was then applied to the “fractured” femur with manual traction applied until femoral length matched the measured length of the contralateral femur. The resulting gap in the “fractured” femur was compared with the length of bone that had been resected. Data were analyzed using means, SDs, and intraclass correlation coefficients (ICCs).

Results

Fifty-seven measurements were collected. The mean difference between the measured fracture gap and the length of bone removed was 8.0±5.8 mm (range, 0–22 mm). Femoral length was accurate to 5 mm in 40% of cases, 10 mm in 70%, 15 mm in 81%, 20 mm in 98%, and 25 mm in 100%. The overall interrater reliability was poor (ICC, 0.11; 95% CI, 0.001–0.44).

Conclusion

Despite poor interrater reliability, the fluoroscopic ruler resulted in a mean leg length discrepancy of 8.0±5.8 mm in this cadaveric study. [
Orthopedics
. 2024;47(6):327–331.]
Dynamic analysis and comparison of the performance of linear and nonlinear controllers applied to a nonlinear non-interactive and interactive process
Authors: Campos-Salazar José M. , Lecaros Pablo , Sandoval-García Rodrigo
Published: September 2024

This article presents an in-depth dynamic analysis and comparative evaluation of three distinct control strategies—proportional-integral (PI) compensator, linear quadratic regulator (LQR), and sliding mode control (SMC)—applied to a nonlinear process in two configurations: non-interactive system (NIS) and interactive system (IS). The primary objective was to optimize the regulation of fluid levels in a dual-tank system subject to external disturbances and varying operational conditions. The process dynamics were initially modeled using nonlinear differential equations, which were subsequently linearized to facilitate the design of the PI and LQR controllers. The PI compensator design was rooted in state-space representation and was tuned using the Ziegler-Nichols method to achieve the desired transient and steady-state performance. The LQR design employed optimal control theory, minimizing a quadratic cost function to derive the state feedback gain matrix, ensuring system stability by shifting the eigenvalues of the closed-loop system matrix into the left half of the complex plane. In contrast, the SMC leveraged the full nonlinear dynamics of the process, establishing a sliding surface to drive the system states toward a desired trajectory with robustness against model uncertainties and external disturbances. The SMC's performance was evaluated by analyzing the existence and stability of the sliding mode using the derived switching laws for the actuation signal. The comparative study was conducted through simulations in MATLAB/Simulink environments, where each controller's performance was assessed based on transient response, robustness to disturbances, and computational complexity. The results indicate that while the PI compensator and LQR provide satisfactory performance under linearized assumptions, the SMC demonstrates superior robustness and precision in managing the nonlinearities inherent in the IS configuration. This comprehensive analysis underscores the critical trade-offs between simplicity, computational overhead, and control efficacy when selecting appropriate control strategies for nonlinear, multi-variable processes.
Fundamentals of Wireless Sensor Networks
Authors: Satheesh Kumar S. , Shaikh Sumaiya , Kathirisetty Nikhila , Regulwar Ganesh Bhaiyya , Kumar E. Ravi
Published: September 2024

As the current computing era is working behind digital data, it is indeed important to concentrate on climatic change, which has become dynamic. Even a few non-automation processes have been converted into automation by using IIoT and industry 4.0 revolution technologies such as data analytics, the Internet of Things, cybersecurity, and machine learning. Sensor networks (SN) play a pivotal role in the collection and transformation of data through electronic devices as sensors. The sensors that work in this stream are ultrasonic sensors that help measure the distance between two vehicles. This proposal concentrates on different sensors used in environmental monitoring, data collection, and data transformation from devices to clouds and cyberattacks that poison wireless sensor networks: tampering attacks, replication attacks, blackhole attacks, wormhole attacks, Sybil attacks, and link layer attacks. Sensors which retrograde in environmental monitoring are listed as Temperature sensor, humidity sensors, airflow sensors, pressure sensors, vibration sensors, and water measuring sensor
Data Collection and Preprocessing for Environmental Monitoring Using Wireless Sensor Networks
Authors: Kachhoria Renu , Mahalle Parikshit N. , Bhagwat Suvarna
Published: September 2024

Wireless Sensor Networks (WSNs) play a pivotal role in environmental monitoring, providing real-time data for assessing and managing natural resources. However, the data collected from these networks often need careful handling due to challenges such as noise, calibration issues, and missing data. Techniques for data acquisition in WSNs, methods for preprocessing to reduce noise and calibrate readings, and strategies to treat missing data and to ensure the quality of environmental monitoring data analysis. Missing data presents a prevalent challenge in datasets. Data generation gaps can arise due to sensor damage, power loss etc. Logical imputation of data representing a crucial pre-processing step for sequential data-driven modeling endeavors. We scrutinize methodologies aimed at enhancing the precision of data imputation models tailored for variate time-series sensor data afflicted by significant data gaps
Smart Solutions for Climate Resilience Harnessing Machine Learning and Sustainable WSNs
Authors: Rajendran Rajesh Kanna , Mohana Priya T. , Musa Abdalla Ibrahim Abdalla , Mahalakshmi S. B. , Anand T. R.
Published: September 2024

Smart Solutions for Climate Resilience: Harnessing Machine Learning and Sustainable WSNs presents a comprehensive examination of how cutting-edge technologies can fortify communities against the escalating impacts of climate change. The chapter explores the integration of machine learning techniques and energy-efficient Wireless Sensor Networks (WSNs) in environmental monitoring and climate prediction. It outlines strategies to optimize energy consumption within WSNs, emphasizing the utilization of sustainable power sources to support remote monitoring initiatives. Through real-world case studies, this chapter showcases the transformative potential of these technologies in fostering climate resilience and sustainable development, offering insights for researchers and practitioners alike.By elucidating the foundational principles of machine learning and WSNs, this chapter provides a roadmap for leveraging these technologies to confront the complex challenges posed by climate change.
Energy Optimization of Routing Protocol in Wireless Sensor Network
Authors: Barbudhe Vishwajit K. , Zanjat Shraddha N. , Karmore Bhavana S.
Published: September 2024

In many modern situations, wireless sensor networks play a crucial role, used for monitoring things like environmental conditions, transactions, and various statuses. These networks gather a large amount of data, sending it to a central hub for analysis. However, a significant problem is that traditional wireless sensor networks heavily rely on energy, and this limits how long they can operate. This chapter develops an optimization approach for a variable clustering routing protocol to address the issue. The objective is to enhance the cluster structure in wireless sensor networks while reducing energy loss in cluster heads. The first step involves employing a dynamic estimation method for clustering to determine cluster heads, utilizing core concentration to establish the head within the cluster radius. The authors also introduce a fuzzy logic algorithm to handle uncertainties in selecting cluster heads. The residual energy of the cluster's head nodes, maintaining a balanced distribution of cluster heads, and optimizing node use of energy are all taken into account by this fuzzy logic approach. An ant colony algorithm-based technique for optimizing inter-cluster transport is presented in this outline. The primary objective is to optimize energy consumption while simultaneously reducing the data communication overhead among cluster heads. Chaotic mapping is utilized by this technique to update and perturb pheromones, ensuring optimal performance. Energy utilization among cluster heads is optimized by selecting the optimal path based on considerations of energy dispersion parameters and distance coefficients. Our experiments show that compared to traditional algorithms, Researchers provide a non-uniform clustering approach for route optimization that dramatically extends the network lifespan by 75% and lowers overall energy consumption by about 20%. This effectively optimizes network energy utilization and significantly extends the network lifetime, demonstrating the practical effectiveness of our method.
Significance of Blockchain Technology in Industrial Applications With an Emphasis on Security Considerations
Authors: Sable Nilesh P. , Rathod Vijay U. , Deshmukh Jyoti Yogesh , Sonavane Sonali Mahendra
Published: September 2024

Block-chain technology has significantly shaped the evolution of industry. Many organisations are benefited from the security, data access, auditing, and transaction management features that block-chain decentralisation technology and privacy protocols provide inside digital platforms. Modern application disciplines like store network the board, Internet of Things, medical care, administration, and assembling are examined in this article as planned regions where block-chain innovation might upset these areas. Also, it gives data on late advancements in block-chain innovation. It examinations and gives bits of knowledge into the security issues and dangers implied with the organizations of block-chain innovation by breaking down the exploration through an exhaustive writing survey. This article discusses ideas for improving the security of the block-chain for business applications and makes critical focuses for extra review. The survey shows how adoption of block-chain technology by industrial sectors has accelerated recently, reaching new heights daily in the finance industry.
Sequência Didática como Metodologia Teórico-Prática no Estudo de Circuitos Elétricos Simples
Authors: Santos Bruno Macedo dos , Araújo Hilda Mara Lopes
Published: September 2024

A pesquisa Sequência Didática (SD) como metodologia teórico-prática no estudo de circuitos elétricos simples partiu do seguinte problema: Como a Sequência Didática com atividades teórico-prática pode ser utilizada no aprendizado de circuitos elétricos simples? A hipótese é que o uso de Sequência Didática (SD) com atividades teórico-práticas contendo o estudo de circuitos elétricos simples possibilita ao aluno um aprendizado significativo, ao contrário da atividade mecânica, superando os conhecimentos anteriores na busca de um novo conhecimento. A pesquisa ancorou-se no objetivo principal de construir uma Sequência Didática com atividades teórico-práticas para mediar o processo ensino-aprendizagem no estudo de circuitos elétricos simples, com alunos do 8º ano do Ensino Fundamental. Por meio da SD foi possível abordar conceitos relacionados à eletrodinâmica, fundamentada na Teoria da Aprendizagem Significativa (TAS) de David Ausubel (2003), que objetiva uma aprendizagem que vai além da memorização e se baseia na realidade do educando com suporte em seus conhecimentos prévios.
A Licenciatura em Física no Estado do Paraná: um estudo exploratório para a formação do professor de Física
Authors: Santos Grazielli Harumi Igarashi dos , Zanatta Shalimar Calegari , Carvalho Hercilia Alves Pereira de
Published: September 2024

Esta pesquisa mapeia os cursos de Licenciatura em Física no Estado do Paraná. Por meio da homepage “e-MEC”, identificamos as instituições que ofertam vagas. E, a partir deste resultado, buscamos, em cada instituição, informações sobre a matriz curricular, carga horária do curso e do Estágio Supervisionado. Os resultados apontam que o Paraná disponibiliza 3.010 vagas. Destas, 704 são para a modalidade presencial, ofertadas majoritariamente, por instituições públicas e 2.306 na modalidade a distância, EaD ofertadas majoritariamente por instituições privadas. As instituições privadas são as que menos disponibilizam dados e tendem a apresentar a menor carga horária para a conclusão do curso, inclusive, em alguns casos, abaixo da carga horária mínima prevista pela legislação. Apontamos que o problema da formação docente para o ensino de Física não é a escassez de vagas, mas sim, a necessidade de maior comprometimento do poder público quanto a fiscalização da qualidade dos cursos ofertados.
Uma abordagem Físico-Matemática para o Ensino de Movimento Uniforme/Função Afim a partir da construção e análise de gráficos
Authors: Mota Sebastião Almeida , Pereira Marcia Regina Santana
Published: September 2024

Este trabalho relata a aplicação de um Material Instrucional (MI) que aborda conceitos relacionados ao ensino do movimento uniforme (MU) dentro do conteúdo de cinemática. O MI foi elaborado com base nos pressupostos da Teoria da Aprendizagem Significativa e nas orientações de Marco Antonio Moreira, para a elaboração de uma Unidade de Ensino Potencialmente Significativa (UEPS) na forma de sequência didática para o professor. A pesquisa busca estabelecer uma relação entre o ensino de física e matemática investigando estratégias de ensino articuladas do conteúdo de MU e função Afim por meio de diferentes formas de representação do movimento em função do tempo, procurando fazer uma análise e interpretação de situações problemas. A coleta de dados foi desenvolvida em dois momentos, utilizando questionários pré e pós-teste. Os resultados obtidos foram analisados de forma quantitativa e a evolução das respostas pode demostrar evidências de uma possível aprendizagem significativa. De modo geral os alunos se mostraram motivados a buscar seu conhecimento, se tornando parte do processo de ensino e aprendizagem, bem como demonstrando predisposição em realizar as atividades propostas.
Tecnologias Digitais aplicadas ao Ensino de Física: Sequência Didática mediada pelo Software Modellus
Authors: Silva Jade Souza da , Alencar Fábio Pessoa , Silva Kariny de Cássia Ramos da , Santos Antonio Marques dos
Published: September 2024

Este artigo explora a aplicação das tecnologias digitais no ensino de Física, com foco na sequência didática mediada pelo Software Modellus. O objetivo principal é investigar como o Modellus pode ser integrado ao ensino de Física, especificamente no estudo do movimento de queda livre. O estudo aborda a questão de como a Física, frequentemente resistida pelos alunos, e o Modellus podem oferecer uma abordagem de aprendizado interativo para alunos e professores. A pesquisa é qualitativa-quantitativa e foi realizada no IFMA - Campus São João dos Patos, envolvendo 76 alunos do 1º ano. Os resultados revelaram que o Modellus pode ser uma ferramenta metodológica eficaz no ensino de Física, uma vez que 75% dos alunos apresentaram um bom desempenho na utilização do Software. Isso sugere que o Modellus pode contribuir positivamente para o ensino da Física, tornando o aprendizado mais acessível e envolvente.
As circunstâncias da aprendizagem no Ensino Remoto Pandemia Covid 19
Authors: Cunha Marilha Aparecida Cruz , Ortiz Adriano José , Silva Fausto Neves
Published: September 2024

Este trabalho baseia-se nas observações feitas na imersão do Programa de Iniciação à Docência, durante a Pandemia da covid-19. A pesquisa é do tipo qualitativa observacional, identifica conteúdos trabalhados em 2020, relativos à memórias espontâneas dos alunos do Ensino Médio, de diferentes instituições, que versa com os descritos na Base Nacional Comum Curricular. Essa previsão facilitaria ao professor a dar continuidade ao previsto pelos documentos normativos da Secretaria da Educação do Estado do Paraná. Por causa do teor das respostas descritas pelos alunos, buscamos refletir sobre a educação, o uso da tecnologia como ferramenta pedagógica, a estrutura escolar e a motivação na busca pelo ensino e aprendizagem. O estudo apontou que precisamos pensar em políticas públicas, em formações de professores e no aperfeiçoamento do uso das tecnologias virtuais como instrumento educacional. A educação significativa não depende apenas do professor, mas também envolve a participação ativa de toda sociedade.
Edição Especial sobre Ensino de Física
Authors: Ferreira Marcello , Silva Filho Olavo Leopoldino da , Batista Michel Corci , Couto Roberto Vinícios Lessa do
Published: September 2024

O editorial destaca a evolução e importância da pesquisa em Ensino de Física no Brasil desde os anos 1980, com encontros nacionais e o desenvolvimento de pós-graduações e revistas especializadas na área. A criação do Mestrado Nacional Profissional em Ensino de Física em 2013 foi um marco significativo, visando a formação de professores com ênfase na interconexão teórica e prática para aplicação em sala de aula. A abordagem de Pesquisas Translacionais busca integrar a pesquisa acadêmica com a prática pedagógica real, resultando na produção do Dossiê Pesquisa Translacional e Produtos Educacionais no Ensino de Física, publicado em três revistas da área. Esta edição da Revista Vitruvian Cogitationes (RVC) apresenta treze artigos do Dossiê, focados no Ensino de Física por meio de sequências didáticas com uso de tecnologias e avaliações, enquanto outros nove artigos abordam o Ensino de Astronomia, priorizando temas como mulheres na Ciência/Astronomia e formação de professores, destacando práticas pedagógicas. O texto convida os leitores a explorar os trabalhos e identificar as temáticas para uma melhor compreensão do contexto e dos desdobramentos apresentados.
Astronomia na Educação Básica por meio de práticas pedagógicas aliadas à BNCC: um relato de experiência
Authors: Ferreira Rayra de Cristo , Cajueiro Dayanne Dailla da Silva
Published: September 2024

A Base Nacional Comum Curricular (BNCC) expõe que o ensino de Ciências na educação básica deve partir da investigação, curiosidade, observação, criação, colaboração e que o aluno precisa ser ativo no processo de construção do conhecimento. Para o ensino da Astronomia não poderia ser diferente, no entanto, há desafios que impedem que a escola possibilite para o estudante uma aprendizagem nesses preceitos. Desse modo, a pesquisa tem como objetivo pontuar as dificuldades de docentes nas aulas com temas da Astronomia, partindo para a observação de práticas pedagógicas em uma escola pública do município de Ananindeua – PA e, com isso, pensar em possibilidades para o ensino da Astronomia que se baseie nos moldes da BNCC. Na instituição escolar citada, é visível aulas conteudistas e expositivas, onde se utiliza como recurso apenas o livro didático e atividades impressas, assim, se torna necessário pensar em recursos metodológicos para desconstruir essas práticas tradicionais de ensino. Essas estratégias metodológicas foram selecionadas e construídas durante as aulas da disciplina de Metodologia do Ensino de Ciências na graduação do curso de Pedagogia. A coleta de dados e os recursos são apresentados por meio de uma mostra científica na Universidade da Amazônia, campus Ananindeua – PA, à discentes e profissionais da educação, visando contribuir com as práticas pedagógicas de professores da educação básica em relação ao estudo de Astronomia para crianças, e os resultados foram satisfatórios quanto a opiniões do público da mostra científica, que destacaram ser recursos de grande valor e de qualidade para o ensino da Astronomia na educação básica.
Preparation and Characterization of Black Phosphene/Titanium Dioxide Composite Nanomaterials by Liquid-Stripping and Solution Mixing Method
Authors: Bao Ta Na , Bolag Altan , Li Jia Yu , Tegus Ojiyed
Published: September 2024

In this study, black phosphorus (BP) was prepared via the high-energy ball milling method, and two-dimensional (2D) BP was further fabricated using the liquid-phase stripping approach. Nano TiO2 was synthesized via the sol-gel method, and it was combined with black phosphene through N, N-dimethylformamide (DMF) medium by a straightforward solution mixing process to produce BP/ TiO2 composite photocatalyst. Subsequently, spectrophotometric analysis, X-ray diffraction (XRD), and high-resolution transmission electron microscopy (HRTEM) were conducted. The band gap of BP was calculated using the Tauc plot method. The results revealed that the values are 1.06 eV and 1.23 eV, corresponding to the band gap emissions of four-and three-layer BP band gap emission, indicating the successful preparation of few layers of black phosphorus. The HRTEM analysis demonstrated that the BP/ TiO2 composite photocatalyst formed a relatively stable crystalline state.
A Review of Three-Dimensional RGB Images and Drone Thermal Camera Images Merged for Building Information Modeling for Energy Audit
Authors: Bajaro Jhon Carlo P. , Calderon Aldrin D.
Published: September 2024

The site visit is the core of the energy audit, where you inspect, measure, and document the building's energy performance and efficiency. Various tools and techniques may be used for this purpose, such as a walk-through survey to observe the building's condition, a blower door test to measure air tightness and infiltration, a thermographic scan to detect heat loss and gain, a lighting audit to assess lighting quality, quantity, and controls, a plug load audit to quantify appliance and equipment energy consumption, a submetering or data logging system to monitor specific systems or zones, and a power quality analyzer to measure electrical parameters and harmonics. Additionally, it is important to interview the building's owner, manager, and occupants in order to gain their feedback and suggestions on energy performance and issues. This paper review of how a drone can help in the energy audit of a building using thermal images and RGB images from thermal camera which will be use in Building Information Modelling (BIM). There are a variety of relevant literatures that serve as sources of inspiration for the conduct of this study. One example is the utilization of teleoperated helicopters that are equipped with an infrared thermal camera. These helicopters are intended to be investigated for energy audits in order to readily assess the conditions of the structure. More improvements will be made to the collected photographs, such as merging them with three-dimensional RGB images. This will allow for an exact determination of which area of the building need upgrading in order to reduce the amount of energy that is emitted; this notion is similar to that of finite element analysis.
Comparative Study of Mechanical Behavior between an Adhesive Made from Date Palm Waste and FM-73 Adhesive
Authors: Maachou Sofiane , Benbakhti Abdeldjalil , Moulgada Abdelmadjid
Published: September 2024

The thickness of the adhesive has a major influence on the shear strength of bonded assemblies. This work is based on a study of the fatigue behavior of two cracked aluminum (2024 T351) plates repaired by patch (graphite/epoxy) under cyclic loading. For this we used a computer code to study the propagation of fatigue cracks to predict the life of the plates repaired named AFGROW. The first plate was repaired using an adhesive made from date palm waste whereas the second plate was repaired using FM-73 adhesive. The results obtained from this study show that, despite the low shear modulus of the adhesive made from date palm waste and the very low film thickness, the joint bonded with the latter gives good joint strength and a lifetime (number of cycles) similar to the joint bonded with the FM-73 adhesive when the thickness of the joint of the adhesive is greater than that of the adhesive made by the waste of the date palm. This shows that the strength of the bonded joint increases rapidly from very low thicknesses (less than a few hundredths of a millimeter). Finally, we recommend using the adhesive made from date palm waste for patch repair as well as for applications such as lightweight construction, electric vehicles or solar panels.
Performance Based Seismic Evaluation of Four-Story School Building by Pushover Analysis Using the Metro Davao Earthquake Model
Authors: Cabotaje Rey Albert C. , Bernardo Geffren R.
Published: September 2024

The recent discovery of the Central Davao Fault System leads to assessing the buildings' seismic performance close to the area. DOST-PAGASA released the Earthquake Atlas, "Metro Davao Earthquake Model," that shows research data and valuable information that would be used in designing new structures and seismic evaluation. Using this Earthquake Atlas, a Four Storey Professional School Building in the University of Mindanao was assessed using ASCE/SEI 41. Structural Engineers and Practitioners widely use the code for Seismic Evaluation of Existing Buildings. As-built plans were acquired first for data collection and structural modelling, analyze using SAP 2000 software and perform a seismic evaluation using the results of the analysis in accordance with ASCE 41 standard; and for the output, provide an evaluation report of the structure’s performance. Using first (ATC 40), second (FEMA 356), and next-generation (FEMA 440 and ASCE 41-13) seismic design principles, the structure was evaluated according to the selection of performance objectives and seismic level. Linear and Nonlinear analyses were employed. Pushover curve was drawn from SAP 2000 for two actions of plastic hinge behavior, deformation-controlled and force-controlled actions. The target performance objective of the structure in this study is Life Safety Level at 10 % probability of exceedance in 50 years with 5% damped based on ASCE 41-13 standard. The assessment results show that the structure did not meet the criteria for life safety level requirements in ASCE/SEI 41 for columns, particularly on the first and last floor level for linear analysis procedure. A few numbers of beams also did not meet the standards, specifically on the roof beam level. The displaced ductility ratio was found to be 3.47 (moderately ductility demand). In nonlinear analysis, the structure also failed to meet the base shear requirements for both deformation and forced controlled actions in Pushover analysis. Performance base shear Vp of 3.233 exceeded the acceptable limit of less than 1.0. The first modal period 1.976 seconds was also notably higher than the building period of 0.647 seconds which indicates structure's low stiffness. These findings were evidence that the structure should undergo retrofitting procedures to meet seismic performance objectives and strengthen the structure's resilience to earthquake damages.
PillWise Medication System: An Iot Treatment Automizer with Adherence Analyzer
Authors: Bishara Daniel , Aguilar Douglas Adalberto
Published: September 2024

The lack of adherence to medical treatment is a critical issue affecting millions of people worldwide, compromising the efficacy of treatments and elevating healthcare costs. This study introduces an open-source IoT system, featuring an automatic pill and water dispenser with a medication adherence analyzer, designed to enhance patient adherence, ensuring safe and simplified medication management. The system aims to improve treatment adherence by offering a simpler medication process and by providing real-time adherence metrics to the patient through a web application. The PillWise Medication System, comprising the Pill Dispenser, the AquaWiser, and the Pill Widget, is designed to automate the medication dispensing process, synchronized water dispensation, and a monitoring application. Its straightforward design and portability render it a viable and secure solution for medication management, potentially enhancing patient compliance and offering critical adherence data to users and healthcare providers. This system is cost-effective and simpler to produce than other automated dispensers, boasting scalability, portability, and ease of use, which may enhance patients’ adherence and provide essential adherence information. The implementation of this system has the potential to significantly improve health outcomes and reduce healthcare costs by enhancing medication management and facilitating their administration.
Structure, Magnetic and Magnetocaloric Properties of Attempted P Substitutions in LaFe11.5Si1.5 Giant Magnetocaloric Material
Authors: Xue Jia Yun , Yibole Hargen , Guillou Francois
Published: September 2024

Recent theoretical and experimental studies suggested that P can enter the structure of La(Fe,Si)13 alloys and lead to a significant enhancement of the isothermal entropy change, one of the two main quantities characterizing the magnetocaloric effect. Here, we report a systematic study of P for Si substitutions in La(Fe,Si)13 alloys. Eight LaFe11.5Si1.5-xPx polycrystalline bulk samples with 0 ≤ x ≤ 0.2 were prepared by arc-melting followed by heat treatment. Powder x-ray diffraction and SEM/EDX analyses show that the α-Fe secondary phase progressively increases with the increase in P substitutions and that a La-rich LaP secondary phase appears. We therefore found that P does not actually enter the main La(Fe,Si)13 phase. Magnetization and DSC measurements confirm this interpretation as the Curie temperatures of La(Fe,Si,P)13 alloys are nearly insensitive to P for Si substitutions and the latent heat of the first-order ferromagnetic transition decreases with the increase in nominal P substitutions. Our work put into questions former reports of the literature on P addition in La(Fe,Si)13 and highlights the particularly complex synthesis of these alloys.
Developing New Natural Surfactant from Date Seeds for Different Field Applications
Authors: Al Otaibi Noah , Aly Moustafa , Moawad Taha
Published: September 2024

The increase in using natural surfactants for enhanced oil recovery (EOR) purposes in recent years is mainly attributed to the widespread global awareness of the environmental effects the oil and gas industry causes. In accordance with KSA Vision 2030 and the corresponding global direction, the purpose of this study is to discover a cost effective, readily available, environmentally friendly, and locally sourced surfactant. This surfactant will help reduce the interfacial tension (IFT) between reservoir liquids to enhance the reservoir’s productivity and increase its ultimate recovery. In this study, date seeds have been chosen as the green surfactant source due to the abundance of such seeds. Al-Khalas, which is a well-known palm tree that grows in Qassim, Al-Kharj, and Al-Ahsa provinces in KSA was chosen. Properties such as surface tension (ST), IFT, pH, and density were measured to evaluate the effectiveness of date seeds as a natural surfactant. ST results showed a reduction from 72 mN/m (of distilled water) to 43 mN/m using the new surfactant in formation water at 10 wt% comprising a 40% reduction. Moreover, IFT of the new surfactant with Saudi medium oil (26 API) was 10 mN/m compared to 18 mN/m of a formation water-oil system which represents a 49% reduction in interfacial tension. Overall, the novel surfactant studied in this research shows great promise in being an effective EOR agent in addition to eliminating the negative impacts of regular surfactants on the environment.
Detailed Analytical EPMA Study of the OPC Pastes Prepared with the Addition of Raw and Milled Fly Ashes
Authors: Temuujin Jadambaa , Ruescher Claus H. , Erdenebayar Jamsran , Ogata Takeyuki
Published: September 2024

Concrete and cement pastes belong to the most used building materials in human history and represent a solidified mixture of ordinary Portland cement (OPC), water, course and fine-grained aggregates. Fly ash is used as a pozzolanic additive to improve concrete properties. The fly ash property can also be modified by various treatments such as milling or size reduction with sieving. It was suggested that a beneficial pozzolanic reaction with fly ash gives high mechanical properties. Such pozzolanic reaction results in calcium silicate hydrate (C-S-H) phase formation. In this research comparative analytical EPMA study of the paste samples prepared with the addition of the milled and non-milled fly ashes has been performed to elucidate the pozzolanic reaction of the OPC with the milled and non-milled fly ashes. A higher pozzolanic reaction with CSH phase formation was observed in milled fly ash added paste.