bluuebunny/crossref_metadata_2025 huggingface dataset:
Hybridizing persistent homology and machine learning for oceanographic time series
Authors: Lin Zixin , Zulkepli Nur Fariha Syaqina , Kasihmuddin Mohd Shareduwan Mohd , Gobithaasan R. U.
Published: February 2025

Oceanographic phenomena are inherently complex due to factors such as global warming, ice melting, and human activities. Analyzing oceanographic data presents a challenging task, and a quantitative approach is often implemented to address these complexities. Traditional machine learning techniques, such as regression and cluster analysis, are commonly employed for predicting and identifying similarities in oceanographic conditions across different locations. This study explores the integration of qualitative approaches into oceanographic data analysis by developing hybrid models that combine topological data analysis (TDA) with traditional machine learning methods. The focus is on extracting qualitative features using persistent homology, the core tool of TDA, and incorporating these features into machine learning models such as support vector regression (SVR) and hierarchical clustering analysis (HCA). The study applies these methods to the following two oceanographic datasets: wave height data from buoy stations in Canada and sea level data from gauge stations in Japan. The results show that the hybrid models significantly outperform traditional approaches across several performance metrics, including the R2 score, maximum absolute error, mean squared error, and Rand score. This demonstrates the value of adding topological information to machine learning models, which enhances their predictive performance.
Bibliometrics and visualization analysis of microplastics research in water from 2011 to 2023
Authors: Jiang Lei , Wang Meiyi , He Shan , Ren Jiabo , Zhang Tong , Cheng Zhihui
Published: February 2025

Microplastics in water have emerged as a significant public concern in recent years due to their potential adverse impacts on both human and animal health. This study conducts an analysis of articles published in key journals indexed in the Web of Science from 2011 to 2023, employing CiteSpace and VOSviewer for data extraction and visualization. The results elucidate a marked increase in both the number of publications and citations since 2018. Initially, the United Kingdom was at the forefront of research output in this domain, with a publication proportion of 16.59% from 2011 to 2017 and 4.37% from 2018 to 2023. However, the proportion of publications in China has increased from 10.31 to 40.45%. Notably, the Marine Pollution Bulletin has not only been an early contributor to this field but also holds the record for the highest number of published articles. Keyword analysis indicates research trends and hotspots. Recent investigations on microplastic removal techniques have predominantly centered on adsorption. Moreover, studies focusing on microplastics in surface water have also garnered considerable attention. This study offers a comprehensive review of existing research and provides guidance for future directions in microplastic research.
Ranking water utilities in a competitive scenario using two years of information and data envelopment analysis
Authors: Gidion Dickson K.
Published: February 2025

Urban water utilities (UWUs) efficiency assessment in a competitive scenario and sunshine regulation are considered the main drivers of competitive services improvement in the water industry. The conventional data envelopment analysis (DEA) assessment technique is weak in accounting for the nature and operation environment of the UWU. Despite numerous use cases, conventional DEA has not successfully benchmarked UWUs in a competitive scenario. Thus, to account for the nature of a UWU environment, regulators employ a performance indicator (PI, single gap) system and other empirical analyses to rank UWU performance. This study has developed a network form of the conventional DEA that employs two years of information to benchmark UWU efficiency in a competitive scenario and compare efficiency results with the PI system. The comparison of the computations was demonstrated to obtain tractable results. The assessment indicates that the proposed network DEA approach includes variables with zero values and places UWUs in a competitive scenario beyond the single gap system. In this way, the best, mediocre and worst performances are revealed, and inefficient UWUs can learn management practices from efficient UWUs and improve water service delivery.
Uso da Classificação Geomecânica RMR Relacionado à Estimativa de Auto Sustentação em Mina Subterrânea de Sal
Authors: Brasil Alisson Carvalho Santos , Hernández Pedro Alameda , Figueiredo Rodrigo Pelucci de
Published: February 2025

A classificação geomecânica de mina de sal (em especial mina de potássio) baseia-se nos seguintes parâmetros: posição e ângulo da camada estratificada, espessura dos estratos, teto imediato da escavação, distância ao topo da camada de estéril, profundidade, orientação da lavra e espessura da argila. Por existirem poucas minas de sal subterrânea, os estudos de cunho científico e divulgações sempre foram limitados, principalmente as relacionadas às classificações geomecânicas. O estudo inicial visa verificar se o sistema RMR (Rock Mass Rating) proposto por Bieniawski (1973) pode ser adotado para correlacionar o tempo de auto sustentação (stand up time) específico na mina. Com uso de estudos estatísticos foi observado que o sistema RMR mostrou forte correlação com o tempo máximo de abertura estável, podendo ser útil na previsibilidade do tempo do auto sustentação do teto e utilizado na mina de estudo.
Análise de estabilidade de taludes usando uma abordagem probabilística
Authors: Neves Matheus Veras , Garcês Thâmara Ingrid Costa , Azevedo George Fernandes , Bazán Felipe Alexander Vargas , Queiroz Paulo César de Oliveira , Barreira Ronnan Wembles Martins , Batalha Luanne de Fátima Pereira
Published: February 2025

Este artigo apresenta um estudo que utiliza implementações computacionais dos métodos FOSM e Monte Carlo. Estes métodos visam determinar a probabilidade de ruptura de encostas em áreas suscetíveis a deslizamentos rasos. O estudo concentra-se na região da Vila Rabelo, situada na zona administrativa de Sobradinho II, Distrito Federal. A abordagem computacional emprega duas ferramentas de programação distintas: o MATLAB para o método FOSM, e o FORTRAN para o método de simulação de Monte Carlo. A análise revela que o método Monte Carlo tende a produzir valores  de probabilidade de ruptura mais elevados em comparação com o método FOSM, especialmente em terrenos íngremes. Foi realizada uma análise de convergência para o método de Monte Carlo, a fim de ilustrar como é determinado o número de simulações adequado. Além disso, os resultados indicam proximidade espacial e ocasionalmente valores mais altos na distribuição espacial de probabilidades de ruptura obtidas a partir do método Monte Carlo em comparação com o método FOSM. As variações nos valores de probabilidade de ruptura alcançados por meio de métodos probabilísticos decorrem das configurações de distribuição da variável coesão, que é um dos dados de entrada.
Richness, diversity and faunal similarity estimators of soil spiders (Arachnida: Araneae) in two vegetation formations of the Cerrado biome
Authors: Formiga Luiza Daiana Araújo da Silva , Soares Francisco Ideilson Lima , Soares Luciana Alves da Luz , Pereira Luana da Luz dos Reis , Martins Alana Ellen de Sousa , Rodrigues Judson Chaves , Brescovit Antonio Domingos
Published: February 2025

Studies on soil araneofauna in the Cerrado biome are still scarce in northeastern Brazil, especially in Maranhão. This study aimed to conduct an inventory of richness, diversity, and faunal similarity estimators of soil spiders in two vegetation formations of the Cerrado biome, namely gallery forest and Cerrado sensu stricto, in the Inhamum Municipal Environmental Protection Area (EPA), Caxias, Maranhão, Brazil. Collections were carried out during dry and rainy periods using Provid-type traps. For faunal analysis, species richness, diversity and equitability tests were used in the Anafau program and faunal similarity tests in the R program. In the present inventory, 23 families, 37 genera, and 43 species were identified. Richness estimators and species accumulation curves generated for both sites (gallery forest and Cerrado sensu stricto) revealed that the sampling effort was not sufficient to fully quantify soil araneofaunal species; therefore, the richness of soil spiders at the two analyzed sites of the Inhamum EPA is underestimated, suggesting that it might be possible to record even higher richness values in the two studied vegetation formations of the Cerrado biome. The Shannon–Wiener diversity index (H′) and Pielou's evenness index (J′) were similar and indicated a moderate diversity of soil spiders in both gallery forest and Cerrado sensu stricto sites. Similarity dendrogram analysis showed that the soil spider communities analyzed were substantially similar, with most species occurring at both sites.
Circuitos produtivos e a participação da agricultura familiar na suinocultura brasileira
Authors: Ceretta Gabriel dos Santos , Matte Alessandra , Villwock Ana Paula Schervinski
Published: February 2025

O objetivo do estudo é analisar a dinâmica produtiva e a participação da agricultura familiar na suinocultura brasileira, especialmente diante das mudanças tecnológicas locais e globais dos últimos anos. A pesquisa é de caráter quantitativo, com levantamento, tratamento e análise de dados secundários dos Censos Agropecuários 2006 e 2017 em relação a suinocultura no Brasil. No que se refere à análise dos resultados, os dados quantitativos foram tratados por meio da estatística descritiva ajustadas a cada variável estudada. Os resultados apontam a presenta da pecuária suína em todo o território brasileiro, com fortalecimento, em anos recentes, para sistemas integrados de produção nas regiões Sul e Sudeste, e uma produção voltada à subsistência no Norte e Nordeste. A principal conclusão é da relevância da atividade para a reprodução de modos de vida como também da sua influencia nos mercados internacionais por meio da exportação da produção. Como implicação o governo brasileiro precisa destinar especial atenção e apoio a agricultura familiar, principal responsável pela atividade no país.
Equações de Intensidade-Duração-Frequência de chuvas intensas para Itabuna-BA e municípios limítrofes
Authors: Moreira Patrick Gomes , Silva Vinícius de Amorim , Silva João Batista Lopes da , Oliveira Bruna Rafaela Machado
Published: February 2025

Objetivou-se neste trabalho determinar os parâmetros da equação de intensidade duração e frequência (IDF) de chuvas intensas para os municípios baianos de Itabuna, São José da Vitória, Jussari, Itapé, Itajuípe, Ilhéus, Buerarema e Barro Preto. Foram escolhidas estações pluviométricas na Agência Nacional de Água que apresenta mais de 20 anos de dados e com registros a partir de 1980. Para cada estação foi obtida as séries de precipitação máxima de 1 dia, para os seguintes períodos de retorno (TR): 5, 10, 15, 25, 50 e 100 anos. Em seguida foi realizada a desagregação da precipitação de um dia em intervalos menores de 5, 10, 15, 20, 25, 30, 60, 360, 480, 600, 720 e 1440 minutos. O ajuste dos parâmetros da equação IDF foi realizado por meio de regressão múltipla não linear, pelo método de iteração de Gradação Reduzida Generalizada (GRG) Não Linear. Foram identificadas 12 estações pluviométricas dentro da área trabalhada, porém 3 estações foram descartadas por falta de dados. Assim, fez-se o ajuste das 9 estações pluviométricas onde o ajuste dos parâmetros K, a, b e c da equação de Intensidade-Duração-Frequência apresentaram valores acima do coeficiente de determinação (R2) 0,997, demonstrando um ajuste muito bom aos dados observados.
Avaliação Geoespacial da Dinâmica Espaço-Temporal da Linha de Costa de São José da Coroa Grande, Pernambuco, Brasil
Authors: Silva Artur Loiola Alves da , Pacheco Admilson da Penha , Barreto Eduardo Paes , Gregório Maria das Neves , Carneiro Marcia Cristina de Souza Matos
Published: February 2025

O monitoramento da linha de costa é essencial para compreender o impacto das atividades humanas e das mudanças climáticas na zona costeira. O acompanhamento regular da posição da linha de costa é extremamente importante para analisar e selecionar as soluções de engenharia mais eficazes na contenção da erosão costeira, além de subsidiar um sistema de gestão litorânea sustentável. Este estudo visa avaliar a evolução da linha de costa em São José da Coroa Grande, Pernambuco, ao longo dos últimos de 49 anos, usando técnicas de sensoriamento remoto como imagens de satélite, veículos aéreos não tripulados (VANT), além de levantamentos GNSS. Foram calculadas as taxas de progradação e retrogradação da costa, identificando os elementos geomorfológicos, que influenciam as mudanças, como erosão e acúmulo de sedimentos. Os resultados revelaram padrões consistentes de erosão e acreção ao longo das décadas examinadas ((1974, 1981, 1997 e 2023)., destacando um trecho com erosão de até -114,291 m/ano entre 1974 e 1997. O estudo também evidenciou a dinâmica sazonal de progradação e retrogradação na área. Recomenda-se integrar dados de sensoriamento remoto de alta resolução espacial e GNSS com informações oceanográficas para uma compreensão mais completa das mudanças costeiras em futuras pesquisas.
Propriedades estatísticas das séries históricas de cota e vazão da bacia do rio Doce
Authors: Teixeira Emmanuel Kennedy da Costa
Published: February 2025

A bacia do rio Doce é de extrema importância socioambiental, econômica e cultural, desempenhando um papel vital na vida das comunidades locais, na biodiversidade regional e na preservação dos recursos hídricos. Para se realizar o planejamento dos seus recursos hídricos, normalmente se recorre às séries históricas de dados. Entretanto, nem sempre elas são analisadas estatisticamente antes de serem utilizadas. Sendo assim, este estudo verificou, por meio da aplicação de testes não paramétricos, no programa estatístico R, a aleatoriedade, independência, homogeneidade e estacionariedade das séries de médias mensais de cota do nível d’água e de vazão desta bacia. A partir dos resultados, obteve-se que nenhuma estação possuía série aleatória; quatro possuíam séries independentes (três de cota e uma de vazão); cento e vinte e oito homogêneas (58 de cota e 70 de vazão); cento e quarenta e oito estacionárias (76 de cota e 72 de vazão). Ao final, concluiu-se que os dados das séries históricas possuem constâncias em suas variações e devem ser analisados criteriosamente antes de serem utilizados.
Análise espacial de correlação entre o índice de desenvolvimento humano e as atividades agropecuárias na Ilha do Marajó, Pará, Brasil
Authors: Narusawa Ítala Duam Souza , Nakakoji Nelson Ken Narusawa , Gomes Maryjane Diniz de Araújo , Braga Thais Gleice Martins , Freitas Tatiana Pará Monteiro de
Published: February 2025

A economia da Ilha do Marajó é influenciada por atividades vinculadas à pecuária, particularmente, a bubalina, cultivada nos campos naturais da Ilha, ao extrativismo nas áreas de floresta e à pequena agricultura desenvolvida desde o período colonial. Nesse contexto, diante das baixas pontuações de IDH, esse estudo analisa a correlação entre atividades agropecuárias e o Índice de Desenvolvimento Humano (IDH) nos municípios da Ilha do Marajó. A metodologia envolveu a organização dos dados de IDH e do censo agropecuário nos centroides dos 16 municípios e a aplicação do método Inverso da Distância Ponderada (IDW) para espacializar os atributos. Como os dados não apresentaram normalidade, foi utilizada a correlação de Spearman. Os resultados mostraram uma correlação moderada e positiva entre a bubalinocultura e a abacaxicultura com o IDH, sugerindo que essas atividades, junto com o turismo, promovem melhorias no desenvolvimento humano. Por outro lado, a criação de galináceos mostrou uma correlação moderada e negativa, indicando uma forma de resiliência local. O estudo explora a correlação entre atividades agropecuárias específicas e o desenvolvimento humano em uma região pouco estudada, utilizando análise espacial para fornecer novos percepções sobre práticas agropecuárias e IDH, destacando a importância de estratégias locais para o desenvolvimento sustentável.
Механизмы построения репрезентации в категориальном поиске: роль внимания и рабочей памяти
Authors: Горбунова Елена С.
Published: February 2025

Introduction. The task of visual search involves locating target stimuli among distractors. This task is one of the most popular in attention research. Both the methodology and theoretical understanding of attention mechanisms in this task have undergone significant changes with the development of cognitive psychology. Modern studies focus more on the ecological validity of the stimulus material used and the participant's response methods, while contemporary theoretical models attempt to consider different variations of target stimulus presentation. Theoretical Justification. We examine categorical search, a type of visual search in which target stimuli are specified by category name. We propose a theoretical model for constructing a representation of the target stimulus in categorical search. This type of search is viewed as a two-stage process: the first stage involves selecting a set of objects in the visual field through attentional guidance, and the second stage involves checking these objects for compliance with the attentional template. The verification process entails verbally naming stimuli based on motor program activation. Within this representation of categorical search mechanisms, we also consider empirical data obtained from various task modifications. Special attention is given to the methodology of hybrid search, where participants need to locate several pre-memorized target stimuli. Discussion. It is suggested that hybrid search is guided by one of the representations (likely the first memorized one), followed by sequential comparison of objects to the attentional template representation of the target stimulus. Each of the non-matching objects is sequentially compared with the other representations.
Linking Leader's Avoidant Behavior to Counter productive work behavior: A Mediated Moderated Model
Authors: Saleem Irfan , Zamir Shumaila
Published: February 2025

Introduction. Extant research has focused on the antecedents of culture, suggesting that a group's culture results from internal and external changes experienced by the group members or successfully transferred by the group leader. The current study aims to understand leaders' role in shaping organisational culture based on their behaviour in temporary work settings. Research to date has mostly focused on leadership styles, not behaviours such as Avoidant behaviour, and yet to examine How leaders' behaviours influence Individual and Organizational Outcomes in project-based firms. Methods. Two hundred ninety-seven leaders and followers (project manager and team members) from Lahore and Islamabad's NGOs participated in the study. Results. A leader's avoidant behaviour positively impacts conflict culture, which affects the individual's performance and organisational well-being. Results identified that CC is a product of behaviour that positively influences counterproductive work behaviour. The present research cannot prove moderation with suggested relations, but direct results unfold the interesting facet. Discussion. The research has found consistent results concerning previous studies. The research has also contributed theoretically and contextually. The research has implications for companies, leaders, and employees. Future researchers might broaden the study's scope by incorporating other constructs, such as employee promotive voice.
Implementation of a new Continuing Training Framework in Physics Didactics: Perspectives and Recommendations
Authors: Raissouni Mohammed Rabih , Mahdi Khalid , Abid Mohammed , Souri Adanan , Raissouni Kenza
Published: February 2025

Introduction. This study aims to evaluate the effect of continuous training of physics teachers, which was realized within the context of the cooperation between the Moroccan Government and the Government of the United States of America, and which aims, among other objectives, to reinforce the competences and the professionalization of the teachers. Methods. The research study group was composed of 62 teachers of physics from high and middle schools. The training lasted 5 days and included face-to-face lessons on the central concepts of physics and chemistry didactics and one of the active methods, namely inquiry-based learning. The analysis of a survey delivered online after three months of the mentioned training, aims at showing the impact of this kind of continuous training on the beneficiaries' classroom practices and the obstacles encountered. Results. The results indicate that this continuous training could not considerably change their classroom practices, due to administrative, didactic and working conditions problems. Discussion. Despite the aim of the training course, which was to encourage participants to change their approach in the classroom to adopt learner-centred practices, the results had only a limited impact. Consequently, it becomes crucial to consider the obstacles uncovered by this study as essential factors for improving the conditions of future continuing training courses.
Использование когнитивного тренажера: возможности минимизации саморегуляционных дефицитов познавательной активности у младших школьников
Authors: Краснорядцева Ольга М. , Еремина Евгения В. , Подойницина Мария А. , Ваулина Татьяна А.
Published: February 2025

Introduction. Studying the modality of sensorimotor activity of elementary school children is influenced by the demand for new research data about the developmental capabilities of cognitive simulators that are focused on strengthening self-regulatory potential of primary school students. The novelty of the study lies in the testing of the use of a cognitive simulator as a diagnostic tool that allows studying the modality of sensorimotor activity of primary schoolchildren as a psychological marker of self-regulation of cognitive activity. Methods. We used cognitive simulator which allows making a visual distortion in the process of solving the cognitive problem “Tower of Hanoi”, which complicates the solution process. To obtain psychological and educational information for each subject (n = 6) we used the method of expert assessments. Results. The paper presents the results of a qualitative analysis of the video images obtained for each subject in the process of solving the “Tower of Hanoi” problem in three experimental conditions (without distortion of the visual field, with inversion of the visual field and time delay of the image). During the experimental study, we identified and described the individual indicators of invariant and variable features of sensorimotor activity of children of primary school age who have different experiences of educational achievements and self-regulation of cognitive activity. Discussion. We identified main characteristics of using self-regulatory resources of cognitive activity by younger schoolchildren in the process of solving a cognitive task in specially designed experimental conditions, taking into account the real educational achievements of the participants. We outline further research directions for creation of a developmental program to use this cognitive simulator to minimize existing self-regulatory deficits in cognitive activity of elementary schoolchildren as one of the significant tasks of psychological and educational support for the cognitive development of modern children and adolescents.
Um jogo adaptativo para potencializar processos cognitivos de jovens com transtornos no desenvolvimento
Authors:   , Moura Mariza de Souza
Published: February 2025

As tecnologias digitais vêm ganhando um espaço expressivo em diversas áreas, inclusive em saúde mental. O estudo desenvolvido através do Programa Oficinando em Rede utiliza Tecnologias da Informação e da Comunicação (TIC’s) promovendo cuidados, inserção social e formação em saúde mental e em educação. Diante disso, viabilizaram-se ideias e projetos a serem estudados e desenvolvidos, no que diz respeito às experiências com jovens com transtorno no desenvolvimento, através do contato com a tecnologia digital. Os jogos atuam não somente como entretenimento, mas também e, principalmente, na potencialização de processos cognitivos dos jovens que os utilizam. Nessa experiência, existem diversos modos de aplicar jogos no âmbito da saúde mental e um deles acontece durante as oficinas junto ao Programa Oficinando em Rede. Oficinas que ocorrem com jovens inseridos nas atividades do Centro de Atenção Psicossocial da Infância e da Adolescência de Mossoró/RN (CAPSi). Como um fator imprescindível para a pesquisa, o projeto atua a partir da observação das características demonstradas por cada jovem nas coordenações de condutas: gestos, ideias e emoções, em particular, durante o contato com jogos digitais que foram utilizados durante as oficinas. Percebeu-se durante as oficinas que o mesmo jogo despertava reações diferentes, em cada jovem, pois estes possuem ações, emoções e transtornos que se expressam de modo singular em cada experiência. Com base em uma tabela, contendo os dispositivos e elementos que chamam a atenção dos jovens participantes do projeto, a leitura dos diários de bordo desenvolvidos em cada oficina e também um formulário elencando os elementos específicos, como som, imagem, animação, cooperatividade, entre outros, pôde-se perceber quais reações foram apresentadas pelos jovens durante as oficinas e, com essa experiência, surgiu a ideia de desenvolver um jogo, contendo dispositivos e elementos adaptativos incluindo as características que chamam a atenção dos jovens participantes do projeto. O jogo segue a perspectiva de serious games, ou jogos sérios, que são jogos que atuam com um propósito específico, utilizando técnicas e métodos de jogos, mas com uma finalidade que vai além de diversão ou entretenimento. E, ainda, métodos adaptativos, que auxiliam na habilidade do jogo em modificar-se a partir das reações do jovem durante o ato de jogar. Propõe-se então o desenvolvimento de um jogo adaptativo para potencializar processos cognitivos de jovens com transtorno no desenvolvimento.
Detecção dinâmica de antipadrões em sistemas baseados em serviços utilizando um sistema multiagente
Authors:   , Régis Hugo Nathan Barbosa
Published: February 2025

Durante o desenvolvimento de Sistemas Baseados em Serviços (SBS), soluções ruins, erros
de projeto ou implementação podem conduzir ao surgimento de antipadrões, que em oposição
aos padrões, são especificações ruins para problemas recorrentes. Antipadrões acarretam em
desvios de funcionalidade durante a execução do sistema, não satisfazendo adequadamente
aos seus requisitos, o que pode degradar a Qualidade de Serviço (QoS) de um SBS. Sua
detecção e correção são de extrema importância pois o surgimento de antipadrões pode
dificultar a manutenção e a futura evolução do SBS. Como método de detecção, este trabalho
propõe o uso de um Sistema Multiagente (SMA), realizando buscas em tempo de execução e
notificando ao administrador do sistema sobre quedas de QoS no SBS causadas por
antipadrões. A detecção desses antipadrões permite a atuação dos agentes na correção do
projeto, usando a solução recomendada pelo SMA para o problema detectado. Os resultados
mostraram que, nos piores casos, o surgimento de antipadrões chegou a extrapolar em até o
dobro de tempo de resposta dos serviços em um Web Service. O SMA foi capaz de detectar,
em tempo de execução, os 3 antipadrões estudados no trabalho. Quando adotadas, as soluções
propostas pelo SMA também normalizaram o tempo de resposta.
Secure e-health framework using artificial intelligence and blockchain technology
Authors:   Department of Computer Science, College of Computer Science and Engineering, Taibah University, Medina 42353, Saudi Arabia, Almukhlifi Reham , Al-Khasawneh Mahmoud Ahmad ,   School of Computing, Skyline University College, University City Sharjah, 1797, Sharjah, UAE,   Applied Science Research Center, Applied Science Private University, Amman, Jordan, Bukhari Amal Abdullah ,   College of Computer Science and Engineering, University of Jeddah, Jeddah, Saudi Arabia, Harasis Ahmad Ali Ahmad ,   Business Management Department, Faculty of Business, Middle East University, Amman, Jordan
Published: February 2025

This review explores emerging technologies in the healthcare sector, specifically focusing on blockchain and artificial intelligence (AI). Data on healthcare trends were gathered from documents published on the Web of Sciences and various Google surveys conducted by different governing bodies. The review aims to examine the potential of integrating blockchain and AI to enhance healthcare by promoting the use of generalizable analytical technologies that can be integrated into comprehensive risk management strategies. This article discusses how blockchain can be utilized as an open network for sharing and authorizing information, which creates opportunities for developing reliable AI models for e-health. AI, using various algorithms and decision-making capabilities, can help healthcare professionals access patient medical records stored on the blockchain. This integration is expected to improve the efficiency of the medical system, reduce costs, and democratize healthcare delivery by incorporating the latest technological advances. Cryptographic records stored on blockchains are essential for AI to securely manage information. The main goal of this article is to develop a secure e-health framework using AI and blockchain technology, referred to as SEHFUAIBC. The design science methodology (DSM) was used in this study. The SEHFUAIBC framework includes seven components: advanced encryption algorithms, access control, multi-factor authentication, AI-based threat detection, blockchain-based data sharing, privacy protection, and audit trail. The framework was evaluated using real-world scenarios, and the results show that the combination of AI and blockchain in this framework provides hybrid security techniques that are crucial for protecting e-health records from unauthorized access.
A INFLUÊNCIA DAS NOTÍCIAS NA VARIAÇÃO DAS AÇÕES DA PETROBRAS
Authors: Almeida Paulo Henrique Soares de , Kalume Ana Carolina , Rosa João Victor Soares
Published: February 2025

A Petrobras é a principal empresa da bolsa de valores brasileira e suas ações oscilam por diversos fatores, incluindo notícias relacionadas à estatal. O objetivo desta pesquisa é analisar como as publicações dos portais Valor Econômico, G1 e CNN impactaram as oscilações das ações da Petrobras em 2023, utilizando uma metodologia mista, que combinou pesquisa qualitativa e quantitativa. O método qualitativo foi usado para analisar a forma como as informações são apresentadas e o seu potencial impacto no mercado, enquanto o quantitativo coletou dados sobre a percepção dos investidores. Os resultados indicam que notícias positivas geralmente elevaram as ações, enquanto as desfavoráveis resultaram em queda, e a maioria dos investidores acredita que as notícias influenciam essas oscilações.
Palavras-chave: ações; bolsa de valores; imprensa; jornalismo; Petrobras.
Abstract
Petrobras is the leading company on the Brazilian stock exchange, and its shares fluctuate due to various factors, including news related to the state-owned company. The objective of this research is to analyze how publications by the portals Valor Econômico, G1, and CNN impacted Petrobras’ stock fluctuations in 2023, using a mixed methodology that combined qualitative and quantitative research. The qualitative method was used to analyze how the information is presented and its potential market impact, while the quantitative method collected data on investors’ perceptions. The results indicate that positive news generally led to a rise in stock prices, while unfavorable news resulted in a decline, and most investors believe that news influences these fluctuations.
Keywords: journalism; Petrobras; press; shares; stock exchange.
Resumen
Petrobras es la principal empresa de la bolsa brasileña y sus acciones oscilan por varios factores, incluyendo noticias relacionadas con la estatal. El objetivo de esta investigación es analizar cómo las publicaciones de los portales Valor Económico, G1 y CNN impactaron en las oscilaciones de las acciones de Petrobras en 2023, utilizando una metodología que combinó investigación cualitativa y cuantitativa. El método cualitativo fue utilizado para analizar la forma en que se presenta la información y su impacto potencial en el mercado, mientras que el cuantitativo recogió datos sobre la percepción de los inversores. Los resultados indican que las noticias positivas generalmente elevaron las acciones, mientras que las desfavorables resultaron en una caída, y la mayoría de los inversores creen que las noticias influyen en esas oscilaciones.
Palabras clave: acciones; bolsa de valores; prensa; periodismo; Petrobras.
Physician Perspectives on the Potential Benefits and Risks of Applying Artificial Intelligence in Psychiatric Medicine: Qualitative Study
Authors: Stroud Austin M , Curtis Susan H , Weir Isabel B , Stout Jeremiah J , Barry Barbara A , Bobo William V , Athreya Arjun P , Sharp Richard R
Published: February 2025

Background

As artificial intelligence (AI) tools are integrated more widely in psychiatric medicine, it is important to consider the impact these tools will have on clinical practice.

Objective

This study aimed to characterize physician perspectives on the potential impact AI tools will have in psychiatric medicine.

Methods

We interviewed 42 physicians (21 psychiatrists and 21 family medicine practitioners). These interviews used detailed clinical case scenarios involving the use of AI technologies in the evaluation, diagnosis, and treatment of psychiatric conditions. Interviews were transcribed and subsequently analyzed using qualitative analysis methods.

Results

Physicians highlighted multiple potential benefits of AI tools, including potential support for optimizing pharmaceutical efficacy, reducing administrative burden, aiding shared decision-making, and increasing access to health services, and were optimistic about the long-term impact of these technologies. This optimism was tempered by concerns about potential near-term risks to both patients and themselves including misguiding clinical judgment, increasing clinical burden, introducing patient harms, and creating legal liability.

Conclusions

Our results highlight the importance of considering specialist perspectives when deploying AI tools in psychiatric medicine.
Spatiotemporal Characteristics and Influential Factors of Electronic Cigarette Web-Based Attention in Mainland China: Time Series Observational Study
Authors: Zhang Zhongmin , Xu Hengyi , Pan Jing , Song Fujian , Chen Ting
Published: February 2025

Background

The popularity of electronic cigarettes (e-cigarettes) has steadily increased, prompting a considerable number of individuals to search for relevant information on them. Previous e-cigarette infodemiology studies have focused on assessing the quality and reliability of website content and quantifying the impact of policies. In reality, most low-income countries and low- and middle-income countries have not yet conducted e-cigarette use surveillance. Data sourced from web-based search engines related to e-cigarettes have the potential to serve as cost-effective supplementary means to traditional monitoring approaches.

Objective

This study aimed to analyze the spatiotemporal distribution characteristics and associated sociodemographic factors of e-cigarette searches using trends from the Baidu search engine.

Methods

The query data related to e-cigarettes for 31 provinces in mainland China were retrieved from the Baidu index database from January 1, 2015, to December 31, 2022. Concentration ratio methods and spatial autocorrelation analysis were applied to analyze the temporal aggregation and spatial aggregation of the e-cigarette Baidu index, respectively. A variance inflation factor test was performed to avoid multicollinearity. A spatial panel econometric model was developed to assess the determinants of e-cigarette web-based attention.

Results

The daily average Baidu index for e-cigarettes increased from 53,234.873 in 2015 to 85,416.995 in 2021 and then declined to 52,174.906 in 2022. This index was concentrated in the southeastern coastal region, whereas the hot spot shifted to the northwestern region after adjusting for population size. Positive spatial autocorrelation existed in the per capita Baidu index of e-cigarettes from 2015 to 2022. The results of the local Moran’s I showed that there were mainly low-low cluster areas of the per capita Baidu index, especially in the central region. Furthermore, the male-female ratio, the proportion of high school and above education, and the per capita gross regional domestic product were positively correlated with the per capita Baidu index for e-cigarettes. A higher urbanization rate was associated with a reduced per capita Baidu index.

Conclusions

With the increasing popularity of web-based searches for e-cigarettes, a targeted e-cigarette health education program for individuals in the northwest, males, rural populations, high school and above educated individuals, and high-income groups is warranted.
A Pilot Study: Rehabilitation Based Coaching Using WhatsApp as a Tool for Families of Children with Disabilities in India (Preprint)
Authors: Coutinho Franzina , Ogourtsova Tatiana , Brien Marie , Krishna Dinesh , Saxena Gauri , Prakash Doss , Venkatachalapathy Navamani , Ponnusamy Ramasubramanian
Published: February 2025

BACKGROUND

The lack of formal peer support for parents has been cited as a gap in child rehabilitation programs that was exacerbated by the COVID-19 pandemic.

OBJECTIVE

Amar Seva Sangam, an NGO in rural India that runs a community based Early Intervention program explored the feasibility of using rehabilitation coaching via WhatsApp to promote interaction between parents and share knowledge.

METHODS

Parents with access to a smart phone were invited to join a 6-week pilot study between April–May 2020. A mixed-method inquiry was used. Quantitative data was collected including number of participants, retention, participants’ relation to child, postings read and discussions generated. Qualitative data on parents' experience with the groups were obtained via phone interviews of 33 parents.

RESULTS

A total of 33 interviews were conducted. Mothers had the highest engagement levels in reading, replying to posts and generating discussion. Interviews revealed overall positive impact of social media groups, improved peer connections, information sharing between parents and motivation to increase child participation and inclusion. Interviews led to refinements of this peer group intervention into the program.

CONCLUSIONS

Parents WhatsApp groups are a feasible method to connect parents of children with disabilities to promote peer support, information sharing and learning.
Bibliometric analysis of ChatGPT research in medical education (Preprint)
Authors: Xu Qi , Zhang Yuning , Xie Xiaolu
Published: February 2025

UNSTRUCTURED

Purpose: As ChatGPT has become more powerful, its application has begun to permeate the field of medical education. This article employs bibliometric analysis to examine the evolution of research concerning the use of ChatGPT in medical education and to identify areas for further development in this domain.
Methods: As of July 14, 2024, all articles regarding the use of ChatGPT in medical education within the Web of Science Core Collection were screened by two reviewers. VOSViewer was utilized to illustrate the relationships among countries, authors, and keywords, whereas Citespace was employed to detect references exhibiting significant bursts of activity.
Results: The study analyzed a total of 243 publications on the use of ChatGPT in medical education. There were 1,226 different authors from 60 countries. The top contributors to this field were the United States, China, and India. The journal with the highest number of publications was JMIR Medical Education, while the Cures Journal of Medical Science had the highest H-index.
Conclusions: This study conducted a bibliometric analysis of ChatGPT research in medical education from 2023 to 2024, identifying the countries, authors, journals, and publications involved in this field. The findings provide a comprehensive overview of the research conducted on the use of ChatGPT in medical education.
Evaluation of Effects of Different Core & Veneer Thickness Combination on Translucency of Two All Ceramic System: An in Vitro Study"
Authors: BHUMIKA SANGTANI  , KAVITA MARU  , MANISH SANGTANI  , ARCHITA GANGWAL
Published: February 2025

Objectives: The study aimed to evaluate the effect of change in thickness of core or veneer ceramic on translucency of two types of Lithium Di Silicate Glass Ceramic IPS e-max PRESS and IPS e-max CAD.
Methods: A total of 56 disks (IPS e.max PRESS, IPS e.max CAD; Ivoclar Vivadent), 15 mm in diameter with different thicknesses (0.80 mm, 1.00 mm), were fabricated as core materials with the lost wax and heat-press techniques, according to the manufacturer’s recommendations. They were divided into groups (n=7), the size of which was determined by power analysis (Δ=0.2; power=0.80; α=0.05). Each core material was veneered with its compatible veneer ceramic (IPS e.max PRESS, IPS e.max CAD. All surfaces were measured by profilometry to ensure consistency within the groups. A glass disk (1.5 mm) positive control (group P) and a metal core (1.5 mm) negative control (group N) were prepared. The translucency parameter (TP) values were calculated using spectrophotometry to calculate the color differences of the specimens over black and white backgrounds.
Results: IPS e.max PRESS and IPS e.max CAD depicted decreasing order or mean % transmittance as 0.15477 for IPS e.max PRESS (0.5+0.5), 0.14431 IPS e.max PRESS (0.8+0.2), 0.06671 IPS e.max CAD (0.5+0.5), 0.06297 IPS e.max CAD (0.8+0.2). The difference between these groups was found to be statistically significant (p<0.05). However, not significant difference found between Group 1 IPS e.max PRESS (0.8+02)-Group2 IPS e.max PRESS (0.5+0.5) and Group5 IPS e.max CAD (0.8+0.2)-Group6 IPS e.max CAD (0.5+0.5) pairs (p>0.05). One-way analysis of variance found significant differences among the TP values of the ceramic groups (p<0.05).
Conclusion: When overall thickness was increased to 1.5 mm, keeping similar veneer at 0.5 mm IPS e-max CAD exhibited better esthetic outcome than IPS e-max PRESS. Interaction of core and veneer are different with different ceramic systems at different thicknesses. Most appropriate ceramic material can be decided based only on specific clinical situation being faced.
The 30th Anniversary Russian Gastroenterology Congress and the Meeting of the Profile Commission on Gastroenterology of the Ministry of Health of the Russian Federation
Authors: Sheptulin A. A.
Published: February 2025

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Risk Factors and Prevention of Upper Gastrointestinal Complications Associated with Nonsteroidal Anti-Inflammatory Drugs
Authors: Bakulina N. V. , Tikhonov S. V. , Nagornova K. A.
Published: February 2025

Aim: to present current data about the frequency and risk factors of upper gastrointestinal complications associated with the use of nonsteroidal anti-inflammatory drugs (NSAIDs) and the possibilities of preventing these complications.Key points. The incidence of gastrointestinal complications associated with NSAIDs is 14.7–30.1 %, with the maximum risk noted in the first two weeks of their administration. The use of selective cyclooxygenase-2 inhibitors is associated with a reduced risk of gastrointestinal complications. All patients who are going to receive NSAIDs should be diagnosed with H. pylori and treated with eradication therapy if this infection is detected. Even in patients without risk factors for gastrointestinal complications and with short courses of therapy, coxibs or a combination of NSAIDs and proton pump inhibitors may be considered. Prevention of NSAID-associated lesions of the upper gastrointestinal tract is an indication for the appointment of omeprazole and esomeprazole in accordance with the instructions for medical use. Esomeprazole has a number of pharmacokinetic advantages — a large area under the pharmacokinetic curve, the ability to inhibit CYP4502C19, which determines the high efficiency of therapy in fast and ultrafast metabolizers. Previous clinical studies of esomeprazole for the prevention of NSAID-associated lesions of the upper gastrointestinal tract demonstrate high efficacy. In the randomized OBERON study the risk of gastric and duodenal ulcers after 3 months of low-dose acetylsalicylic acid treatment in the esomeprazole group was 7 times lower.Conclusion. Assessment of risk factors, correction of modifiable risk factors, selection of safer NSAIDs and simultaneous administration of proton pump inhibitors (including esomeprazole) are effective prevention of NSAID-associated upper gastrointestinal lesions.
Case of Solid Pseudopapillary Neoplasm of Pancreas
Authors: Hamzaçelebioğlu M. , Üreyen O. , Argon A. , İlhan E. , Mert Ateşci A.
Published: February 2025

Aim: to discuss the clinical presentation, management, and outcome of the clinical case of solid pseudopapillary tumour of the pancreas (SPTP).Key points. SPTPs are rare tumours known for their low malignant potential. They are predominantly found in younger females, typically occurring in the tail of the pancreas. Surgical resection of SPTP with negative margins is associated with improved survival rates and lower chances of recurrence. In this study, we discuss the case of a 69-year-old woman diagnosed with an SPTP originating from the tail of the pancreas, which had spread to the hilum of the spleen. A radical resection was performed, successfully obtaining negative surgical margins. However, the patient subsequently developed metastasis to the liver and lungs, prompting the initiation of systemic chemotherapy. The patient died seven months after the development of metastasis and 39 months following the primary diagnosis. This case underscores that, despite initial successful surgical outcomes, high-risk histopathological features can lead to recurrence and metastasis, necessitating reassessment of treatment strategies.Conclusion. Negative surgical margins are critical for a favourable prognosis in the treatment of SPTPs; however, close monitoring for potential recurrence is essential. Our findings highlight that even after achieving negative margins, patients with high-risk features should undergo rigorous follow-up and consider postoperative systemic chemotherapy. This clinical case emphasizes the complexity of managing SPTP and the need for individualized treatment strategies, as early detection of recurrence can significantly influence survival outcomes.