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Abstract: For years, solar energy has been a subject of study for electricity generation as an alternative power source. The main objective of this project is to carry out a comparative analysis of the production of electrical energy between fixed photovoltaic panels and those with tracking systems on one axis. Three solar modules were designed and built with the same technical characteristics but different solar tracking systems; Single-axis tracking systems will use tracking systems by astronomical programming and light tracking by LDR sensors. Current, voltage and temperature sensors were implemented along with software capable of obtaining the characteristic curves of the production behavior in each prototype. The data processing, as well as the management of I/O signals coming from the different electronic components associated with the operation of each system, are governed by an Arduino mega board linked to an Ethernet module to be able to observe the curves of production from a website, all operating automatically. Therefore, we determined that the PV system by astronomical programming is the most convenient, due to its lower energy consumption when correcting the panel's position. Abstract years source axis Singleaxis Single Current prototype processing IO I O website automatically Therefore convenient panel s position

Resumen: Desde hace años la energía solar viene siendo motivo de estudio para la generación eléctrica como fuente de alimentación alternativa. El objetivo principal de este proyecto es realizar un análisis comparativo de la producción de energía eléctrica entre paneles fotovoltaicos fijos y con sistemas de seguimiento en un eje. Se diseño y construyó tres módulos solares con las mismas características técnicas, pero con diferentes sistemas de seguimiento solar; los sistemas seguidores de un eje utilizaron sistemas de seguimiento por programación astronómica y seguimiento de luz por sensores LDR. Se implementaron sensores de corriente, voltaje y temperatura, así como un software encargado de obtener las curvas características del comportamiento de la producción en cada prototipo. El procesamiento de los datos, así como la gestión de señales de E/S proveniente de los diferentes componentes electrónicos asociados al funcionamiento de cada sistema, son gobernados por una placa Arduino mega unida a un módulo ethernet con la finalidad de poder observar las curvas de producción desde un sitio web, todo esto operando de manera autómata. Por tanto, determinamos que el sistema FV por programación astronómica es el más conveniente, debido a su menor consumo energético al corregir la posición del panel. Resumen alternativa técnicas LDR corriente temperatura prototipo datos ES E S web autómata tanto conveniente panel

https://doi.org/10.37116/revistaenergia.v20.n2.2024.599

Servicios ecosistémicos: su vinculación y valoración en matrices de paisajes productivos ganaderos en el Chaco Húmedo. Año 2018
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Gugliotta-Ruggeri, Fosco Emmanuel

; Aranda-Espinoza, María Lidia

; Ortiz, Romy Ana María

Población y Desarrollo

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jun 2024, Volume 30 N. 58 Pages 37 - 46

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT The livestock productive landscape encompassing Playada, La Piedad, San Francisco, and La Rafaela estates in the western region of Paraguay emerges as a representative model with capabilities for both production and conservation of ecosystem services. Through categorization using ArcGIS 10.3, it was identified that grasslands and savannas cover approximately 35% of the total area, around 5,716 hectares. The study, based on landscapescale homogeneity, allowed for the analysis of physical characteristics, distribution, coverage, and anthropogenic pressures in five Homogeneous Environmental Units (HEUs). The characterization of ecosystem services revealed that forest remnants provide regulation, provisioning, and cultural services, while grasslands are the primary providers of supporting services. Technical profiles were generated for each HEU, and conservation strategies such as agroforestry systems and land planning, derived from sustainable production, were proposed for the benefit of both producers and ecosystems, emphasizing the importance of understanding the dynamics of productive landscapes for resource optimization and long-term sustainability.

RESUMEN El paisaje productivo ganadero en las fincas Playada, La Piedad, San Francisco y La Rafaela, región occidental de Paraguay, se erige como modelo representativo con aptitudes para producción y conservación de servicios ecosistémicos. Mediante categorización con ArcGIS 10.3, se identificó que los pastizales y sabanas cubren aproximadamente el 35% del área total, alrededor de 5,716 hectáreas. El estudio, basado en homogeneidad a escala paisaje, permitió analizar características físicas, distribución, cobertura y presiones antrópicas en cinco Unidades Ambientales Homogéneas (UAH). La caracterización de servicios ecosistémicos reveló que los remanentes boscosos proveen servicios de regulación, provisión y culturales, mientras que los pastizales son los principales proveedores de servicios de soporte. Con fichas técnicas para cada UAH, se propusieron estrategias de conservación como sistemas silvopastoriles y planificación predial, derivadas de la producción sostenible, en beneficio de productores y ecosistemas, subrayando la importancia del conocimiento de la dinámica de paisajes productivos para la optimización de recursos y la sostenibilidad a largo plazo.

https://doi.org/10.18004/pdfce/2076-054x/2024.030.58.037

La calidad de las obras de contratación pública considerando el precio más bajo versus el mejor costo
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Andrade, Alexis

; Saldaña, Carlos

; Espinoza, Ramiro

Revista Digital Novasinergia

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jun 2024, Volume 7 N. 1 Pages 88 - 106

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Abstract: The present study seeks to verify that the bidders of the construction bidding processes tend to reduce their bid budgets with the intention of obtaining a better qualification, increasing their probability of being awarded. It is considered that a decrease in the capital would lead to a reduction in the quality of the materials used in the construction stage, having a negative impact on the final quality. A data survey was carried out on all the bidding processes for works that were published on the SERCOP portal. This sample was classified into quartiles according to the amount awarded, with quartile 1 encompassing the processes awarded to the lowest bid and quartile 4 encompassing the processes awarded to the highest bid, to correlate the quality of the works two surveys were applied, one addressed to inspectors and another to the users of each work, hence, according to the quartile that each process belongs to, it was observed that there is a tendency to award the processes with the lowest offer as long as it complies with the guidelines of the best cost. With the Pearson correlation coefficient, it was identified that there is a very low positive correlation and in zone 3 of the country it is observed that the impact of awarding the bidding processes for works to the bidders with the lowest budget has very slight relevance in the final quality of the structure.

Resumen: En el presente estudio se busca verificar que los oferentes de los procesos de licitación de obra tienden a disminuir sus presupuestos de las ofertas con la intención de obtener una mejor calificación, incrementando su probabilidad de hacerse adjudicatario de la misma, se considera que una disminución en el capital conduciría a una reducción en la calidad de los materiales empleados en la etapa de construcción, teniendo un impacto negativo en la calidad final. Se hizo un levantamiento de datos de todos los procesos de licitación de obra que fueron publicados en el portal SERCOP, esta muestra fue clasificada en cuartiles según el monto adjudicado, siendo el cuartil 1 el que engloba a los procesos adjudicados a la oferta más baja y el cuartil 4 abarca a los procesos adjudicados a la oferta más alta, para correlacionar la calidad de las obras se aplicó dos encuestas, una dirigida a los fiscalizadores y otra para los usuarios de cada obra, acorde al cuartil que pertenece cada proceso se observó que existe una tendencia a adjudicar los procesos con la oferta más baja siempre que cumpla con los lineamientos del mejor costo, con el coeficiente de correlación de Pearson se identificó que existe una correlación positiva muy baja ,en la Zona 3 de la país se observa que el impacto de adjudicar los procesos de licitación de obra a los ofertantes con el presupuesto más bajo tiene relevancia muy leve en la calidad final de la estructura.

https://doi.org/10.37135/ns.01.13.05

[SciELO Preprints] - THE RUBRIC IN THE TEACHING AAND LEARNING PROCESS IN EDUCATIONAL PLATFORMS
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Llerena-Espinoza, Edith María Garro-Aburto, Luzmila Lourdes Taipe-Poma, Angelica Norma Ocampo-Pizarro, Saúl Rafael

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Publication date: 2024-04-05

Abstract: Es Pt En

Las rúbricas, herramientas esenciales para una evaluación objetiva, impulsan un aprendizaje autónomo y reflexivo, clave en el desarrollo de competencias. El objetivo de la revisión efectuada fue analizar la literatura científica sobre el uso de rúbricas para evaluar a los estudiantes a través de plataformas educativas virtuales en los diferentes niveles y carreras en las instituciones educativas en el período 2018-2022. Se realizó una revisión sistemática bajo las directrices PRISMA. Se consultaron bases de datos como Scopus, Web of Science, SciELO y Science Direct, identificando inicialmente 127 artículos. Mediante criterios estrictos de inclusión y exclusión, centrados en la relevancia, calidad metodológica y actualidad, se seleccionaron 19 artículos para un análisis detallado. Los resultados mostraron un aumento significativo en la investigación sobre rúbricas en diferentes niveles educativos y un interés creciente en su uso como herramientas de evaluación formativa. Se concluyó que las rúbricas son fundamentales para una interacción dinámica, activa y dirigida en el proceso educativo, al promover un aprendizaje autónomo y reflexivo que contribuyó al desarrollo de competencias. La revisión proporciona una comprensión integral del estado actual y la efectividad de las rúbricas en la educación virtual.

As rubricas, ferramentas essenciais para a avaliação objetiva, promovem uma aprendizagem autónoma e reflexiva, fundamental para o desenvolvimento de competências. O objetivo da revisão realizada foi analisar a produção científica sobre a utilização de rubricas para avaliação de alunos por meio de plataformas educacionais virtuais de diferentes níveis e carreiras em instituições de ensino no período 2018-2022. Uma revisão sistemática foi conduzida sob as diretrizes PRISMA. Foram consultadas bases de dados como Scopus, Web of Science, SciELO e Science Direct, identificando-se inicialmente 127 artigos. Utilizando critérios rígidos de inclusão e exclusão, focados na relevância, qualidade metodológica e atualidade, foram selecionados 19 artigos para análise detalhada. Os resultados mostraram um aumento significativo na investigação sobre rubricas em diferentes níveis educativos e um interesse crescente na sua utilização como ferramentas de avaliação formativa. Concluiu-se que as rubricas são fundamentais para uma interação dinâmica, ativa e direcionada no processo educativo, ao promoverem aprendizagens autónomas e reflexivas que contribuíram para o desenvolvimento de competências. A revisão fornece uma compreensão abrangente do estado atual e da eficácia das rubricas na educação virtual.

Rubrics are essential tools for an objective evaluation, promote autonomous and reflective learning, key in the development of competencies. The objective of the review was to analyze the scientific literature on the use of rubrics to assess students through virtual educational platforms at different levels and careers in educational institutions and their impact on the teaching and learning process in the period 2018-2022. A systematic review was conducted under PRISMA guidelines. Databases such as Scopus, Web of Science, SciELO and Science Direct were consulted, initially identifying 127 articles. Using strict inclusion and exclusion criteria, focusing on relevance, methodological quality and timeliness, 19 articles were selected for detailed analysis. The results showed a significant increase in research on rubrics at different educational levels and a growing interest in their use as formative assessment tools. It was concluded that rubrics are fundamental for a dynamic, active and directed interaction in the educational process, promoting autonomous and reflective learning that contributed to the development of competencies. The review provides a comprehensive understanding of the current status and effectiveness of rubrics in virtual education

https://doi.org/10.1590/SciELOPreprints.8391

Efectividad de bioceramicos en el mantenimiento de la vitalidad pulpar en recubrimiento pulpar directo en denticion primaria y permanente: revisión sistemática con metaanálisis
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Méndez, Julieta

; Espinoza-Espinoza, Gerardo

; Seron, Pamela

; Villasanti, Ulises

Medicina clínica y social

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apr 2024, Volume 8 N. 1 Pages 27 - 34

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN Introducción: Se han desarrollado materiales bioactivos para el recubrimiento pulpar directo con el objetivo de preservar la pulpa dentaria y mantener el diente por mayor tiempo en la cavidad oral. Objetivo: El objetivo de esta revisión fue evaluar la efectividad del uso de bioceramicos como material de recubrimiento directo pulpar para mantener la vitalidad pulpar en dientes primarios y permanentes con pulpitis reversible. Metodología: Se realizó una revisión sistemática con meta análisis. Se estudió el éxito en el tratamiento del mantenimiento de la vitalidad, el dolor postoperatorio y la decoloración. Se realizó una búsqueda Electrónica en las bases de datos: MEDLINE, EMBASE, COCHRANE, SCOPUS, LILACS, BBO. Se extrajeron los datos y se analizaron con Rev Man. Resultados: Se incluyeron ensayos clínicos aleatorizados en la cual se realizaron recubrimiento pulpar directo con silicatos tricalcicos comparado con otros materiales de recubrimiento. Comparando tres biocerámicos no se encontraron diferencias significativas en el mantenimiento de la vitalidad pulpar. En cuanto a la decoloración se observaron diferencias estadísticamente significativas a favor de Biodentine (p <0,001). Discusión: la relevancia clínica de estos hallazgos es discutible debido a su pequeña magnitud general y al alto riesgo de sesgo de los estudios incluidos.

ABSTRACT Introduction: Bioactive materials have been developed for direct pulp capping in order to preserve the dental pulp and keep the tooth longer in the oral cavity. Objective: The objective of this review was to evaluate the effectiveness of the use of bioceramics as direct pulp capping material to maintain pulp vitality in primary and permanent teeth with reversible pulpitis. Methods: A systematic review with meta-analysis was performed. Success in treating vitality maintenance, postoperative pain, and discoloration was studied. An electronic search was carried out in the databases: MEDLINE, EMBASE, COCHRANE, SCOPUS, LILACS, BBO. Data were extracted and analyzed with Rev Man. Results: Randomized clinical trials in which direct pulp capping with tricalcium silicates was performed compared with other capping materials were included. Comparing three bioceramics, no significant differences were found in the maintenance of pulp vitality. Regarding discoloration, statistically significant differences were observed in favor of Biodentine (p <0.001). Discussion: the clinical relevance of these findings is debatable due to their small overall magnitude and the high risk of bias of the included studies.

https://doi.org/10.52379/mcs.v8i1.327

Phytochemical profile of Capsicum spp. fruits related to ripeness level, shading and harvest season in the Southeast of Mexico
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Cruz-Ricardez, Dario De la

; Lagunes-Espinoza, Luz del Carmen

; Soto-Hernández, Ramón Marcos

; Hernández-Nataren, Edith

; Ortiz-García, Carlos Fredy

; Acosta-Pech, Rocío Guadalupe

Chilean journal of agricultural research

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feb 2024, Volume 84 N. 2 Pages 211 - 224

Abstract: En | Text: En | PDF: En

ABSTRACT Secondary metabolites of Capsicum spp. have biological activity, which can be modified by external factors as the amount of incident light and soil water availability during crop growing, and by internal factors as fruit ripeness level. The study aim was to determine by HPLC method the phytochemical profile of C. annuum L. var. glabriusculum (Dunal) Heiser & Pickersgill (AMA and GAR genotypes) and C. frutescens L. (PIP genotype) grown under open sky and 70% shade during dry and rainy harvest season. Phytochemicals were affected by genotype, light level, harvest season, and fruit ripeness level. Phytochemicals number changed among genotypes: PIP > AMA> GAR. In immature fruits AMA (4.74 mg g-1) and GAR (3.83 mg g-1) had highest capsaicin content; and PIP (0.43 (g g-1), AMA (0.18 (g g-1) and GAR (0.14 (g g-1) in lutein content in all harvest seasons and light level conditions studied. In mature fruits, PIP had the highest capsaicin (5.77 mg g-1) and β-carotene (0.45 (g g-1) content. Gallic and syringic acids were major constituents of phenolics acids, and quercetin and rutin for flavonoids. Mature and immature fruits from 70% shade showed the quercetin highest content (108.4-160.02 (g g-1), increasing during dry season (180.9-1368.6 (g g-1). Gallic acid (789.3-1076.7 (g g-1) and rutin (114.0 (g g-1) increased in AMA immature fruits when grown under open sky. Ferulic acid was not detected in GAR under any of the conditions studied. In AMA, ferulic, protocatechuic and p-hydroxybenzoic acids were detected only in rainy season fruits in both light levels. The harvest season and shading level of these Capsicum spp. should be considered when evaluating the biological activity of chili peppers fruits extracts in tropical crops.

https://doi.org/10.4067/s0718-58392024000200211

Incidence of childhood cancer in Latin America and the Caribbean: coverage, patterns, and time trends
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de Paula Silva, Neimar

; Colombet, Murielle

; Moreno, Florencia

; Erdmann, Friederike

; Dolya, Anastasia

; Piñeros, Marion

; Stiller, Charles A

; Steliarova-Foucher, Eva

; Steliarova-Foucher, E

; Colombet, M

; Gloeckler Ries, LA

; Moreno, F

; Dolya, A

; Shin, HY

; Hesseling, P

; Stiller, CA

; Moreno, F

; Laura, EA

; Duarte, MA

; Alonso, M

; Prince, MA

; Diumenjo, MC

; Arias Ondicol, N

; Lima, CA

; Mundim Pena, GP

; Asturian Laporte, C

; de Oliveira, JC

; Pontes de Aquino, JA

; Vallebuona, C

; Galaz, JC

; Umaña, ME

; Espinoza, C

; Vargas Gallagher, SM

; Uribe, CJ

; Bravo, LE

; Arias Ortiz, NE

; Yepez Chamorro, MC

; Torres Alvarado, G

; Galán Alvarez, YH

; Martinez Reyes, FC

; Tanca Campozano, J

; Castillo Calvas, JC

; Mendoza Alava, M

; Cueva Ayala, P

; Roué, T

; Deloumeaux, J

; Joachim, C

; Duarte Muñoz, F

; Hanchard, B

; Fajardo-Gutiérrez, A

; Payet, E

; Albújar, PF

; Zavala Zegarra, DE

; Barrios, E

Revista Panamericana de Salud Pública

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2024, Volume 48 elocation e11

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

resumen está disponible en el texto completo

ABSTRACT Objective. To provide a comprehensive overview of geographical patterns (2001–2010) and time trends (1993–2012) of cancer incidence in children aged 0–19 years in Latin America and the Caribbean (LAC) and interpret the findings in the context of global patterns. Methods. Geographical variations in 2001–2010 and incidence trends over 1993–2012 in the population of LAC younger than 20 years were described using the database of the third volume of the International Incidence of Childhood Cancer study containing comparable data. Age-specific incidence per million person-years (ASR) was calculated for population subgroups and age-standardized (WSR) using the world standard population. Results. Overall, 36 744 unique cases were included in this study. In 2001–2010 the overall WSR in age 0–14 years was 132.6. The most frequent were leukemia (WSR 48.7), central nervous system neoplasms (WSR 23.0), and lymphoma (WSR 16.6). The overall ASR in age group 15–19 years was 152.3 with lymphoma ranking first (ASR 30.2). Incidence was higher in males than in females, and higher in South America than in Central America and the Caribbean. Compared with global data LAC incidence was lower overall, except for leukemia and lymphoma at age 0–14 years and the other and unspecified tumors at any age. Overall incidence at age 0–19 years increased by 1.0% per year (95% CI [0.6, 1.3]) over 1993–2012. The included registries covered 16% of population aged 0–14 years and 10% of population aged 15–19 years. Conclusions. The observed patterns provide a baseline to assess the status and evolution of childhood cancer occurrence in the region. Extended and sustained support of cancer registration is required to improve representativeness and timeliness of data for childhood cancer control in LAC.

RESUMO Objetivo. Apresentar uma visão abrangente dos padrões geográficos (2001 a 2010) e das tendências temporais (1993 a 2012) da incidência de câncer em crianças e jovens de 0 a 19 anos na América Latina e no Caribe (ALC) e interpretar os resultados no contexto de padrões mundiais. Métodos. Foram descritas variações geográficas de 2001 a 2010 e tendências de incidência de 1993 a 2012 na população com menos de 20 anos da ALC usando informações comparáveis da base de dados do terceiro volume do estudo International Incidence of Childhood Cancer. Foram calculadas taxas de incidência específica por idade por milhão de pessoas-ano (ASR, na sigla em inglês) para subgrupos populacionais e taxas padronizadas por idade usando a população padrão mundial (WSR, na sigla em inglês). Resultados. No total, foram incluídos 36 744 casos únicos. No período de 2001 a 2010, a WSR para todos os tumores combinados na faixa etária de 0 a 14 anos foi de 132,6. Os diagnósticos mais frequentes foram leucemia (WSR de 48,7), neoplasias do sistema nervoso central (WSR de 23,0) e linfoma (WSR de 16,6). A ASR para todos os tumores combinados na faixa etária de 15 a 19 anos foi de 152,3, e a maior taxa foi a de linfoma (ASR de 30,2). A incidência foi maior no sexo masculino do que no sexo feminino e maior na América do Sul do que na América Central e no Caribe. De modo geral, em comparação com as estimativas mundiais, a incidência na ALC foi menor, exceto para leucemia e linfoma entre 0 e 14 anos e para outros tumores e tumores não especificados em qualquer idade. A taxa de incidência na faixa etária de 0 a 19 anos aumentou em 1,0% ao ano (IC de 95% [0,6, 1,3]) entre 1993 e 2012. Os registros incluídos cobriam 16% da população de 0 a 14 anos e 10% da população de 15 a 19 anos. Conclusões. Os padrões observados servem de referência para avaliar o status e a evolução da ocorrência de câncer infantil na região. É necessário garantir um apoio ampliado e consistente aos registros de câncer para aprimorar a representatividade e a disponibilidade das informações em tempo adequado para o controle do câncer infantil na ALC.

https://doi.org/10.26633/rpsp.2024.11

Directrices para los protocolos de ensayos clínicos de intervenciones con inteligencia artificial: la extensión SPIRIT-AI
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Cruz Rivera, Samantha

; Liu, Xiaoxuan

; Chan, An-Wen

; Denniston, Alastair K.

; Calvert, Melanie J.

; Denniston, Alastair K.

; Chan, An-Wen

; Darzi, Ara

; Holmes, Christopher

; Yau, Christopher

; Moher, David

; Ashrafian, Hutan

; Deeks, Jonathan J.

; Ferrante di Ruffano, Lavinia

; Faes, Livia

; Calvert, Melanie J.

; Keane, Pearse A.

; Cruz Rivera, Samantha

; Vollmer, Sebastian J.

; Liu, Xiaoxuan

; Lee, Aaron Y.

; Jonas, Adrian

; Esteva, Andre

; Beam, Andrew L.

; Chan, An-Wen

; Panico, Maria Beatrice

; Lee, Cecilia S.

; Haug, Charlotte

; Kelly, Christophe J.

; Yau, Christopher

; Mulrow, Cynthia

; Espinoza, Cyrus

; Fletcher, John

; Moher, David

; Paltoo, Dina

; Manna, Elaine

; Price, Gary

; Collins, Gary S.

; Harvey, Hugh

; Matcham, James

; Monteiro, Joao

; Khair ElZarrad, M.

; Ferrante di Ruffano, Lavinia

; Oakden-Rayner, Luke

; Calvert, Melanie J.

; McCradden, Melissa

; Keane, Pearse A.

; Savage, Richard

; Golub, Robert

; Sarkar, Rupa

; Rowley, Samuel

Revista Panamericana de Salud Pública

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2024, Volume 48 elocation e12

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

resumen está disponible en el texto completo

ABSTRACT The SPIRIT 2013 statement aims to improve the completeness of clinical trial protocol reporting by providing evidence-based recommendations for the minimum set of items to be addressed. This guidance has been instrumental in promoting transparent evaluation of new interventions. More recently, there has been a growing recognition that interventions involving artificial intelligence (AI) need to undergo rigorous, prospective evaluation to demonstrate their impact on health outcomes. The SPIRIT-AI (Standard Protocol Items: Recommendations for Interventional Trials–Artificial Intelligence) extension is a new reporting guideline for clinical trial protocols evaluating interventions with an AI component. It was developed in parallel with its companion statement for trial reports: CONSORT-AI (Consolidated Standards of Reporting Trials–Artificial Intelligence). Both guidelines were developed through a staged consensus process involving literature review and expert consultation to generate 26 candidate items, which were consulted upon by an international multi-stakeholder group in a two-stage Delphi survey (103 stakeholders), agreed upon in a consensus meeting (31 stakeholders) and refined through a checklist pilot (34 participants). The SPIRIT-AI extension includes 15 new items that were considered sufficiently important for clinical trial protocols of AI interventions. These new items should be routinely reported in addition to the core SPIRIT 2013 items. SPIRIT-AI recommends that investigators provide clear descriptions of the AI intervention, including instructions and skills required for use, the setting in which the AI intervention will be integrated, considerations for the handling of input and output data, the human–AI interaction and analysis of error cases. SPIRIT-AI will help promote transparency and completeness for clinical trial protocols for AI interventions. Its use will assist editors and peer reviewers, as well as the general readership, to understand, interpret and critically appraise the design and risk of bias for a planned clinical trial.

RESUMO A declaração SPIRIT 2013 tem como objetivo melhorar a integralidade dos relatórios dos protocolos de ensaios clínicos, fornecendo recomendações baseadas em evidências para o conjunto mínimo de itens que devem ser abordados. Essas orientações têm sido fundamentais para promover uma avaliação transparente de novas intervenções. Recentemente, tem-se reconhecido cada vez mais que intervenções que incluem inteligência artificial (IA) precisam ser submetidas a uma avaliação rigorosa e prospectiva para demonstrar seus impactos sobre os resultados de saúde. A extensão SPIRIT-AI (Standard Protocol Items: Recommendations for Interventional Trials - Artificial Intelligence) é uma nova diretriz de relatório para protocolos de ensaios clínicos que avaliam intervenções com um componente de IA. Essa diretriz foi desenvolvida em paralelo à sua declaração complementar para relatórios de ensaios clínicos, CONSORT-AI (Consolidated Standards of Reporting Trials - Artificial Intelligence). Ambas as diretrizes foram desenvolvidas por meio de um processo de consenso em etapas que incluiu revisão da literatura e consultas a especialistas para gerar 26 itens candidatos. Foram feitas consultas sobre esses itens a um grupo internacional composto por 103 interessados diretos, que participaram de uma pesquisa Delphi em duas etapas. Chegou-se a um acordo sobre os itens em uma reunião de consenso que incluiu 31 interessados diretos, e os itens foram refinados por meio de uma lista de verificação piloto que envolveu 34 participantes. A extensão SPIRIT-AI inclui 15 itens novos que foram considerados suficientemente importantes para os protocolos de ensaios clínicos com intervenções que utilizam IA. Esses itens novos devem constar dos relatórios de rotina, juntamente com os itens básicos da SPIRIT 2013. A SPIRIT-AI preconiza que os pesquisadores descrevam claramente a intervenção de IA, incluindo instruções e as habilidades necessárias para seu uso, o contexto no qual a intervenção de IA será integrada, considerações sobre o manuseio dos dados de entrada e saída, a interação humano-IA e a análise de casos de erro. A SPIRIT-AI ajudará a promover a transparência e a integralidade nos protocolos de ensaios clínicos com intervenções que utilizam IA. Seu uso ajudará editores e revisores, bem como leitores em geral, a entender, interpretar e avaliar criticamente o delineamento e o risco de viés de um futuro estudo clínico.

https://doi.org/10.26633/rpsp.2024.12

Directrices para presentación de informes de ensayos clínicos sobre intervenciones con inteligencia artificial: extensión CONSORT-AI
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Liu, Xiaoxuan

; Cruz Rivera, Samantha

; Moher, David

; Calvert, Melanie J.

; Denniston, Alastair K.

; Chan, An-Wen

; Darzi, Ara

; Holmes, Christopher

; Yau, Christopher

; Moher, David

; Ashrafian, Hutan

; Deeks, Jonathan J.

; Ferrante di Ruffano, Lavinia

; Faes, Livia

; Calvert, Melanie J.

; Keane, Pearse A.

; Cruz Rivera, Samantha

; Vollmer, Sebastian J.

; Liu, Xiaoxuan

; Lee, Aaron Y.

; Jonas, Adrian

; Esteva, Andre

; Beam, Andrew L.

; Chan, An-Wen

; Panico, Maria Beatrice

; Lee, Cecilia S.

; Haug, Charlotte

; Kelly, Christophe J.

; Yau, Christopher

; Mulrow, Cynthia

; Espinoza, Cyrus

; Fletcher, John

; Moher, David

; Paltoo, Dina

; Manna, Elaine

; Price, Gary

; Collins, Gary S.

; Harvey, Hugh

; Matcham, James

; Monteiro, Joao

; Khair ElZarrad, M.

; Ferrante di Ruffano, Lavinia

; Oakden-Rayner, Luke

; Calvert, Melanie J.

; McCradden, Melissa

; Keane, Pearse A.

; Savage, Richard

; Golub, Robert

; Sarkar, Rupa

; Rowley, Samuel

Revista Panamericana de Salud Pública

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2024, Volume 48 elocation e13

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

resumen está disponible en el texto completo

ABSTRACT The CONSORT 2010 statement provides minimum guidelines for reporting randomized trials. Its widespread use has been instrumental in ensuring transparency in the evaluation of new interventions. More recently, there has been a growing recognition that interventions involving artificial intelligence (AI) need to undergo rigorous, prospective evaluation to demonstrate impact on health outcomes. The CONSORT-AI (Consolidated Standards of Reporting Trials–Artificial Intelligence) extension is a new reporting guideline for clinical trials evaluating interventions with an AI component. It was developed in parallel with its companion statement for clinical trial protocols: SPIRIT-AI (Standard Protocol Items: Recommendations for Interventional Trials–Artificial Intelligence). Both guidelines were developed through a staged consensus process involving literature review and expert consultation to generate 29 candidate items, which were assessed by an international multi-stakeholder group in a two-stage Delphi survey (103 stakeholders), agreed upon in a two-day consensus meeting (31 stakeholders) and refined through a checklist pilot (34 participants). The CONSORT-AI extension includes 14 new items that were considered sufficiently important for AI interventions that they should be routinely reported in addition to the core CONSORT 2010 items. CONSORT-AI recommends that investigators provide clear descriptions of the AI intervention, including instructions and skills required for use, the setting in which the AI intervention is integrated, the handling of inputs and outputs of the AI intervention, the human–AI interaction and provision of an analysis of error cases. CONSORT-AI will help promote transparency and completeness in reporting clinical trials for AI interventions. It will assist editors and peer reviewers, as well as the general readership, to understand, interpret and critically appraise the quality of clinical trial design and risk of bias in the reported outcomes.

RESUMO A declaração CONSORT 2010 apresenta diretrizes mínimas para relatórios de ensaios clínicos randomizados. Seu uso generalizado tem sido fundamental para garantir a transparência na avaliação de novas intervenções. Recentemente, tem-se reconhecido cada vez mais que intervenções que incluem inteligência artificial (IA) precisam ser submetidas a uma avaliação rigorosa e prospectiva para demonstrar seus impactos sobre os resultados de saúde. A extensão CONSORT-AI (Consolidated Standards of Reporting Trials – Artificial Intelligence) é uma nova diretriz para relatórios de ensaios clínicos que avaliam intervenções com um componente de IA. Ela foi desenvolvida em paralelo à sua declaração complementar para protocolos de ensaios clínicos, a SPIRIT-AI (Standard Protocol Items: Recommendations for Interventional Trials – Artificial Intelligence). Ambas as diretrizes foram desenvolvidas por meio de um processo de consenso em etapas que incluiu revisão da literatura e consultas a especialistas para gerar 29 itens candidatos. Foram feitas consultas sobre esses itens a um grupo internacional composto por 103 interessados diretos, que participaram de uma pesquisa Delphi em duas etapas. Chegou-se a um acordo sobre os itens em uma reunião de consenso que incluiu 31 interessados diretos, e os itens foram refinados por meio de uma lista de verificação piloto que envolveu 34 participantes. A extensão CONSORT-AI inclui 14 itens novos que, devido à sua importância para as intervenções de IA, devem ser informados rotineiramente juntamente com os itens básicos da CONSORT 2010. A CONSORT-AI preconiza que os pesquisadores descrevam claramente a intervenção de IA, incluindo instruções e as habilidades necessárias para seu uso, o contexto no qual a intervenção de IA está inserida, considerações sobre o manuseio dos dados de entrada e saída da intervenção de IA, a interação humano-IA e uma análise dos casos de erro. A CONSORT-AI ajudará a promover a transparência e a integralidade nos relatórios de ensaios clínicos com intervenções que utilizam IA. Seu uso ajudará editores e revisores, bem como leitores em geral, a entender, interpretar e avaliar criticamente a qualidade do desenho do ensaio clínico e o risco de viés nos resultados relatados.

https://doi.org/10.26633/rpsp.2024.13

10.

Seroprevalencia de virus Hepatitis B en gestantes al momento del parto
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Astorga, María José

; Sandoval, Alejandra

; Espinoza, Sebastián

Andes pediatrica

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2024, N. ahead

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Abstract: Worldwide, there is an alert due to the increase in the seroprevalence of hepatitis B virus (HBV). This can cause up to 3.5% of chronic diseases, of which 40% present secondary complications and/ or early death. Objective: To determine the seroprevalence of HBV in pregnant women at the time of delivery. Patients and Method: Observational, descriptive, cross-sectional study with cross-association between 2018 and 2019 at the Hospital Carlos Van Buren (HCVB), in Valparaiso, Chile. All pregnant women admitted for delivery care or with an immediate newborn who had HBV surface antigen study were included. Data were collected from the pregnant woman (age, nationality, education level, parity, type of delivery, and peripartum HIV-syphilis serology) and the newborn (gestational age, weight, and APGAR score). Inferential and multivariate analysis was performed using the Stata software. Results: 1,355 pregnant women were analyzed. 87.7% were Chilean, 5.5% Haitian, 4.2% Venezuelan, and 2.6% were of other nationalities. 0.3% were positive for HBV. The prevalence of HBV in Chileans was 0.08% and in Haitians 4%. Haitian nationality was at higher risk of HBV (OR = 83) vs. Chilean nationality (p = 0.0001). None presented coinfection with HIV and/or syphilis. Conclusions: HBV seroprevalence in HCVB pregnant women was 0.3%, similar to that described in the general population in Chile. There was no coinfection with other sexually transmitted diseases. The only predictor of HBV infection was Haitian nationality.

Resumen: Existe una alerta a nivel mundial por el aumento de la seroprevalencia del virus hepatitis B (VHB), el que puede ocasionar hasta un 3,5% de enfermedad crónica, de los cuales un 40% presenta complicaciones secundarias y/o muerte anticipada. Objetivo: Determinar la seroprevalencia de VHB de gestantes al momento del parto. Pacientes y Método: Estudio observacional descriptivo de corte transversal con asociación cruzada entre los años 2018 y 2019, en el Hospital Carlos Van Buren (HCVB), Valparaíso, Chile. Se incluyeron todas las gestantes que ingresaron para la atención del parto o con recién nacido inmediato que tenían el resultado del antígeno de superficie de VHB. Se recopilaron datos de la gestante (edad, nacionalidad, escolaridad, paridad, tipo de parto y serología VIH-sífilis periparto) y del recién nacido (edad gestacional, peso y APGAR). Se aplico análisis inferencial y multivariado con Stata. Resultados: Se analizaron 1.355 gestantes. Un 87,7% de nacionalidad chilena, 5,5% haitianas, 4,2% venezolanas y 2,6% de otras nacionalidades. El 0,3% resultaron positivas para VHB. La prevalencia de VHB en chilenas fue 0,08% y en haitianas 4%. La nacionalidad haitiana resultó de mayor riesgo de VHB (OR = 83) versus la nacionalidad chilena (p = 0,0001). Ninguna presentó coinfección con VIH y/o Sífilis. Conclusiones: La seroprevalencia de VHB en gestantes del HCVB fue de 0.3%, similar a la población general en Chile. No existió coinfección con otras enfermedades de transmisión sexual. El único factor predictor de infección por VHB fue la nacionalidad haitiana.

https://doi.org/10.32641/andespediatr.v95i2.4790

11.

Assessment of cellulose nanofibers from bolaina blanca wood obtained at three shaft heights
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Arango-Perez, Sergio Andre

; Gonzales-Mora, Héctor Enrique

; Ponce-Alvarez, Silvia Patricia

; Gutarra-Espinoza, Abel Aurelio

; Cárdenas-Oscanoa, Aldo Joao

Maderas. Ciencia y tecnología

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2024, Volume 26 elocation 18

Abstract: En | Text: En | PDF: En

Abstract: Cellulose nanofibers (CNF) could be obtained from diverse lignocellulosic sources, among them wood. Regarding this, it is important to clarify if the shaft section of the tree could influence the CNF characteristics. This study evaluated cellulose nanofibers from Guazuma crinita (bolaina blanca) obtained at different heights of the longitudinal axis of the shaft of trees from a three-and-a-half-year-old plantation. The wood was subjected to pulping, bleaching and subsequent mechanical milling using a Changsha Samy XYQM-2L planetary ball mill to obtain cellulose nanofibers. The product was characterised using analytical techniques: scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy. Additionally, the degree of polymerisation was determined. The effect of longitudinal position on cellulose nanofibers characteristics was evaluated by comparing means using ANOVA and Kruskal-Wallis statistical tests. The yield of cellulose nanofibers production from the high, middle and basal sections was 32,1 %, 33,6 % and 31 %, respectively. The obtained cellulose nanofibers exhibited a significantly larger diameter for the high zone (84 nm) compared with the middle (75 nm) and basal (69 nm) zones; the length remained above the micrometre range. With respect to degree of polymerisation, a decrease was evidenced with respect to the increase in shaft height; the basal zone exhibited a degree of polymerisation of 300, a significantly higher value than the middle and high zones, which exhibited degree of polymerisation of 249 and 211, respectively. The product showed typical cellulose type I polymorphism and crystallinity indexes of 76 %, 93 % and 96 % for the high, middle and basal sections, respectively. Regarding the thermostability of cellulose nanofibers, the maximum degradation rate of cellulose nanofibers occurred between 335 °C and 341 °C, with cellulose nanofibers from the basal area being the most stable. The adsorption of the methylene blue dye on cellulose nanofibers was evaluated; an efficiency > 60 % was found.

https://doi.org/10.22320/s0718221x/2024.18

12.

Prevalencia de conductos en C de segundos molares mandibulares evaluados en tomografía de haz cónico
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Castillo Córdova, Rosa Verónica

; León Ruidías, Natalia Antuané

; Espinoza Salcedo, Alexander Roger

; Herrera-Plasencia, Paul Martín

Revista Cubana de Estomatología

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2024, Volume 61 elocation e4858

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: Adequate knowledge of the configuration of root canals is fundamental in endodontics; tomographic evaluation allows a correct assessment of their radicular arrangement. Objective: To determine the prevalence of C-shaped canals in mandibular second molars, evaluated by cone beam tomography. Methods: A descriptive and cross-sectional study was carried out; the sample consisted of 200 permanent mandibular second molars from a Peruvian population, observed in cone beam tomography, where the presence of the C-shaped canal, its configuration according to Fan's classification and the patient's gender were recorded. Results: The prevalence of the C-shaped root canal configuration in lower second molars was 65.5%; according to the Fan classification, the highest prevalence was observed in the cervical third of the root canal, type C1 with 85.7%; in the middle third, type C2 with 42.9%; at the apical level it was type C3C with 72.1%; according to gender, 65.2% of the C-shaped canals corresponded to females. Conclusion: The prevalence of C-shaped canals in mandibular second molars evaluated in cone beam tomography was 65.5% with a higher predominance in the female gender. The tomographic evaluation allows a better identification and internal configuration of the root canals.

RESUMEN Introducción: El conocimiento adecuado de la configuración de conductos radiculares es fundamental en endodoncia; la evaluación tomográfica permite una correcta evaluación de su disposición radicular. Objetivo: Determinar la prevalencia de conductos en C de segundos molares mandibulares, evaluados en tomografía de haz cónico. Métodos: Se realizó un estudio descriptivo y de corte transversal; la muestra estuvo conformada por 200 segundos molares mandibulares permanentes de una población peruana, observadas en tomografías cone beam, donde se registró la presencia del conducto en C, su configuración según la clasificación de Fan y el sexo del paciente. Resultados: La prevalencia de la configuración radicular en forma de C en segundos molares inferiores fue del 65,5 %; según la Clasificación de Fan se observó mayor prevalencia en el tercio cervical del conducto radicular el tipo C1 con 85,7 %; en el tercio medio el tipo C2 con 42,9 %; a nivel apical fue el tipo C3C con 72,1 %; según el sexo, el 65,2 % de los conductos en C correspondió al femenino. Conclusión: La prevalencia de los conductos en C de los segundos molares mandibulares evaluados en tomografías de haz cónico fue de 65,5 % con mayor predominio en el sexo femenino. La evaluación tomográfica permite una mejor identificación y configuración interna de los conductos radiculares.

13.

Vicarious learning and types of behaviors in infants of Initial Education
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Flores, Stefany Raquel

; Ortiz-Espinoza, María Elena

ALTERIDAD.Revista de Educación

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dec 2023, Volume 18 N. 2 Pages 264 - 272

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Este artículo analiza las formas en que el aprendizaje vicario promueve la reproducción de conductas en los infantes de Educación Inicial. La investigación nació a partir de una problemática evidenciada en el aula de clases de una institución privada ubicada al norte de la ciudad de Quito, con la finalidad de comprender la reproducción de conductas por medio del aprendizaje vicario. La metodología utilizada se basó en un enfoque cualitativo, al observar y recopilar información para profundizar la investigación. Los métodos utilizados fueron: analítico sintético, etnográfico y hermenéutico. Además, se utilizó la técnica de observación directa a los infantes; y entrevistas aplicadas a dos docentes. Los resultados determinaron que los infantes manifiestan diferentes conductas, según la actividad y el ambiente. Aunque, la conducta agresiva y adquirida tienen mayor incidencia. También se determinó el desconocimiento sobre el aprendizaje vicario por parte de las docentes. Esto lleva a que la mayoría de conductas, especialmente agresiva, las vean como naturales por la edad, sin considerar el espacio o cambios que inciden de forma directa en dichas conductas. La investigación enfatiza la importancia de considerar el aprendizaje vicario como uno de los aspectos que repercuten en el comportamiento de los infantes dentro del espacio educativo y pueden ser procesos mediados o modificados mediante refuerzos. Asimismo, es necesario contar con mayor información en el Ecuador sobre este tema para que los docentes puedan crear pautas de aprendizaje.

Abstract This article analyze the ways in which vicarious learning encourages the reproduction of behaviors in infants of initial education. The research was born from a problem evidenced in the classroom of a private institution located north of the city of Quito in order to understand the reproduction of aggressive behavior in toddlers through vicarious learning. The methodology used was based on a qualitive approach observing and collecting information to deepen the investigation. The methods used were: the synthetic analytical, the ethnographic and the hermeneutical. In addition, the technique of direct observation of the children was used; and the interviews that were applied to two teachers. The results determined that infantes manifest different behaviors according to the activity and the envionment. Although aggressive and acquired behavior have greater incidence.Iignorance about vicar learnig by teachers was also determined. This leads to the majority of behaviors especially the aggressive see them as natural by age without considering the space or change that directly affect these behaviors. Research emphasizes the importance of considering vicarious learning as one of the aspects that affects the behavior of infants within the educational space and that can be mediated or modified processes through reinforcements. Likewise it is necessary that there are more information in Ecuador on this subject so that teachers create learning guidelines.

https://doi.org/10.17163/alt.v18n2.2023.09

14.

Concentración de nutrientes de dos formulaciones de fertilizantes fermentados (bioles) elaborados con insumos locales
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Rojas-Espinoza, Bruno Fabián

; Hernández-Chontal, Mario Alejandro

; Rodríguez-Orozco, Nereida

; Linares-Gabriel, Ariadna

Terra Latinoamericana

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dec 2023, Volume 41 elocation e1658

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Summary: In the current context of agroecological transition, the use of fermented fertilizers or biols has intensified. The objective of this study was to compare the nutrient concentration of two formulations of fermented fertilizers elaborated with local inputs. Handmade biodigesters were designed and sheep manure and Kikuyo grass (Pennisetum clandestinum) were used. Two formulations were generated: Biol 1 (20% kikuyo grass, 30% sheep manure and 50% water) and Biol 2 (50% sheep manure and 50% water), which were fermented for 100 days and there were three replicates of each formulation. In the biols the organic matter and the concentration of the macronutrients N, P and K, as well as the concentration of the micronutrients Fe, Cu, Mn and Zn were determined. Biol 1 had a higher concentration of organic matter, N and Fe (P ≤ 0.05). It is concluded that the nutrient concentration of the biol was improved when the grass was added in the fermentation process. The use of local, low-cost and easily accessible inputs can be an alternative to produce biols.

Resumen: En el contexto actual de la transición agroecológica, se ha intensificado el uso de fertilizantes fermentados o bioles. El objetivo del trabajo fue comparar la concentración nutrimental de dos formulaciones de fertilizantes fermentados elaborados con insumos locales. Se diseñaron biodigestores artesanales y se utilizó estiércol de ovino y pasto Kikuyo (Pennisetum clandestinum). Se generaron dos formulaciones: Biol 1 (20% pasto kikuyo, 30% estiércol ovino y 50% agua) y Biol 2 (50% estiércol ovino y 50% agua), las cuales se fermentaron durante 100 días y se tuvieron tres repeticiones de cada formulación. En los bioles se determinó la materia orgánica y la concentración de los macronutrientes N, P y K, así como la concentración de los micronutrientes Fe, Cu, Mn y Zn. El Biol 1 tuvo mayor concentración de materia orgánica, N y Fe (P ≤ 0.05), es decir, se concluye que se mejoró la concentración nutrimental del biol cuando se agregó el pasto en el proceso de fermentación. El uso de insumos locales, de bajo costo y de fácil acceso puede ser una alternativa para producir bioles.

https://doi.org/10.28940/terra.v41i0.1658

15.

Representaciones sociales sobre la migración en inmigrantes venezolanos residentes en Lima Metropolitana, Perú
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Acuña-Choque, Katherine

; Bazan-Joaquin, Benjamin

; Malvaceda-Espinoza, Eli Leonardo

; Monroy-Velasco, Iris Rubi

Migraciones internacionales

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dec 2023, Volume 14 elocation rmiv1i12568

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Se busca conocer las representaciones sociales de la migración entre inmigrantes venezolanos residentes de Lima Metropolitana durante 2018. A partir de un diseño fenomenológico, se realizaron 15 entrevistas a profundidad y un análisis de contenido híbrido. Se identificaron categorías emergentes, como los motivos (políticos y económicos) y las consecuencias de la migración a nivel personal, psicosocial y familiar. En cuanto al proceso de toma de decisiones, se evidenciaron el trayecto y las limitaciones para la emigración de Venezuela a Perú. Finalmente, se encontró una actitud empática entre los migrantes, evidenciada en la ayuda, la preocupación y las sugerencias para mejorar la situación de los migrantes. Se concluye que las representaciones sociales de la migración se articulan en motivos, consecuencias, el proceso de la toma de decisiones y la actitud empática, los cuales se ven influenciados por las características sociales, culturales y políticas del país de recepción.

Abstract This article aims at understanding the social representations of migration among Venezuelan immigrants residing in Metropolitan Lima during 2018. Based on a phenomenological design, 15 in-depth interviews and a hybrid content analysis were conducted. Several emerging categories were identified, such as the motivations (primarily political and economic) for migration, and its personal, psychosocial and familial consequences. Regarding the decision-making process, the journey and limitations for emigration from Venezuela to Peru were evidenced. Finally, the study revealed an empathetic attitude among migrants, evidenced in their assistance, concern and suggestions for improving the situation of migrants. In conclusion, the social representations of migration are shaped by motivations, consequences, decision-making processes, and an empathetic attitude, all of which are influenced by the social, cultural, and political characteristics of the receiving country.

https://doi.org/10.33679/rmi.v1i1.2568

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volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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