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1
tesis de maestría
Publicado 2019
Enlace
Enlace
Descargue el texto completo en el repositorio institucional de la Universidade Estadual de Campinas: https://hdl.handle.net/20.500.12733/1637005
2
artículo
Publicado 2024
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Este estudio examina la eficacia y precisión de la Traducción Automática (TA) en comparación con la Traducción Humana (TH), para lo cual utiliza la métrica Bilingual Evaluation Understudy (BLEU) en la evaluación. El campo en rápida evolución de la traducción de idiomas, especialmente en el contexto del aprendizaje automático y la inteligencia artificial, requiere una evaluación crítica de la TA versus TH. Se busca comparar la calidad de las traducciones generadas por máquina de Google Translate, DeepL y ChatGPT 3.5 con traducciones humanas en el par lingüístico inglés-español. El estudio utiliza la métrica BLEU, comparando las traducciones máquina y humanas con un estándar profesional. Se utilizan datos de exámenes de estudiantes de traducción para las traducciones generadas por humanos. Nuestros hallazgos indican una mayor correlación estructural en las traduccio...
3
artículo
Speech accuracy is an indicator for evaluating the language of children with cochlear implant (CI). Verifying the teaching that increases this accuracy and how efficiency measures can be adopted are relevant questions. The current study evaluated the acquisition of speech accuracy, using pictures of scenes as controls. Sentences were employed after equivalence-based instruction. Eight children with CI and who were readers participated in the study. The sentences had the following structure: [subject]-[verb]-[object]. The teaching included selecting pictures and constructing printed sentences, conditionally to dictated sentences. Naming and reading was monitored by multiple probes. Two judges transcribed the participants’ vocalizations and the accuracy was measured by the correspondence with target-phonemic units of sentences. All the participants increased the speech accuracy in respon...
4
artículo
Publicado 2024
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As emergências registradas anualmente no Peru evidenciam a insegurança que a população enfrenta devido à circulação de transporte com materiais perigosos. Portanto, é necessário fortalecer a capacidade de prevenção, redução e controle desses riscos. O ALOHA é um software de simulação de incidentes com materiais perigosos. Para analisar sua precisão, foi utilizado um estudo de caso em que um caminhão-tanque provoca um vazamento de gás liquefeito de petróleo, resultando em uma ignição e deflagração no distrito de Villa El Salvador, na província e no departamento de Lima.
5
artículo
Family resilience assessment scale (FRAS): assessing its internal structure in the Brazilian context
Publicado 2025
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It aimed to gather evidence psychometrics of the Family Resiliency Assessment Scale (FRAS). Two studies were carried out with participants from different states in Brazil. In the first (n = 314), the majority female (56.4%), with an exploratory factor analysis being performed, which suggested a three-factorial structure, with adequate precision. The study 2 (n = 336), the majority female, who undergoing hemodialysis (46.4%). Confirmatory factor analysis corroborated the structure tetra-factorial (family communication and problem solving, maintaining a positive outlook, using social resources and economics, and family spirituality). Therefore, the results showed that the reduced version of FRAS can be an alternative to assess family resilience and its correlates.
6
artículo
Publicado 2021
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Academic satisfaction has been studied from different perspectives that considerate distinct ways of measurement. However, the plurality of evaluated facets prevents a more parsimonious assessment of the general students’ academic satisfaction. In the article, we aimed to provide psychometric evidence of the validity and reliability for the AMSS in Brazil in two studies (N = 893). In Study 1, an exploratory factor analysis and item parameters (Item Response Theory) support the one-factor solution and the suitability of the six items. Moreover, evidence for factorial invariance across gender and convergent validity with the PANAS and with the SWLS was also presented in Study 2. In conclusion, the present paper provides evidence of the adequacy of the AMSS to evaluate global satisfaction with the academics course in Brazil.
7
artículo
Publicado 2024
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Objetivo: Avaliar a eficácia dos modelos de aprendizagem profunda e das suas extensões com modelos de volatilidade condicional na previsão da volatilidade do Índice Geral S&P/BVL Peru. Métodos: O estudo adotou um desenho analítico não experimental, transversal, para prever a volatilidade do Índice Geral S&P/BVL Peru, analisando 5807 dados de 3 de janeiro de 2000 a 16 de outubro de 2023. Os dados históricos do Índice foram processados utilizando técnicas computacionais em Python. Foram efectuados testes estatísticos tais como o teste Dickey-Fuller aumentado e o teste Jarque-Bera. Para alcançar a estacionariedade dos dados, foi necessário aplicar diferenciação após testes de raiz unitária. A precisão dos modelos foi comparada através dos testes Diebold-Mariano e Wilcoxon Signed Rank. Resultados: Os modelos GJR-GARCH, SVR com kernel linear e redes neurais demonst...
8
artículo
Publicado 2024
Enlace
Enlace
It aimed to gather evidence psychometrics of the Family Resiliency Assessment Scale (FRAS). Two studies were carried out with participants from different states in Brazil. In the first (n = 314), the majority female (56.4%), with an exploratory factor analysis being performed, which suggested a three-factorial structure, with adequate precision. The study 2 (n = 336), the majority female, who undergoing hemodialysis (46.4%). Confirmatory factor analysis corroborated the structure tetra-factorial (family communication and problem solving, maintaining a positive outlook, using social resources and economics, and family spirituality). Therefore, the results showed that the reduced version of FRAS can be an alternative to assess family resilience and its correlates.
9
artículo
Publicado 2023
Enlace
Enlace
The UPPS-P scale is widely used to assess impulsivity. For this reason, the psychometric properties of the extensive version of UPPS-P were analyzed from the Rasch polytomous model. Eight hundred Argentine adolescents aged 12 to 18 years participated in the study. As a result, it was found that the dimensions of the UPPS-P presented an adequate fit to the Rasch model, adequate levels in the Person Separation Index (PSI), some items with local dependence and an adequate level of unidimensionality. It is concluded that the scale is a valid instrument to assess impulsivity in adolescents; therefore, a conversion table with interval scores is presented to increase the measurement precision of the instrument.
10
tesis doctoral
Publicado 2017
Enlace
Enlace
Descargue el texto completo en el repositorio institucional de la Universidade Estadual Paulista: http://hdl.handle.net/11449/152169
11
objeto de conferencia
Presentación que se llevó a cabo durante el V Congreso Internacional de Computación y Telecomunicaciones COMTEL 2013 del 22 al 25 de octubre de 2013 en Lima, Perú. COMTEL, es un certamen organizado por la Facultad de Ingeniería de Sistemas, Cómputo y Telecomunicaciones de la Universidad Inca Garcilaso de la Vega, que congrega a profesionales, investigadores y estudiantes de diversos países con el fin de difundir e intercambiar conocimientos, mostrar experiencias académicas-científicas y soluciones para empresas en las áreas de Computación, Telecomunicaciones y disciplinas afines.
12
artículo
Publicado 2023
Enlace
Enlace
The UPPS-P scale is widely used to assess impulsivity. For this reason, the psychometric properties of the extensive version of UPPS-P were analyzed from the Rasch polytomous model. Eight hundred Argentine adolescents aged 12 to 18 years participated in the study. As a result, it was found that the dimensions of the UPPS-P presented an adequate fit to the Rasch model, adequate levels in the Person Separation Index (PSI), some items with local dependence and an adequate level of unidimensionality. It is concluded that the scale is a valid instrument to assess impulsivity in adolescents; therefore, a conversion table with interval scores is presented to increase the measurement precision of the instrument.
13
tesis doctoral
Publicado 2016
Enlace
Enlace
Las exigencias de energía, aminoácidos y consumo de ración fueron calculados por el método factorial, considerando en la fase de madurez sexual la cantidad de nutrientes necesaria para crecimiento y deposición de nutrientes corporales en cada componente del cuerpo (ovario, oviducto, plumas y cuerpo libre de plumas); en la fase de producción fueron considerados la cantidad de nutrientes necesaria para el mantenimiento y producción en base al potencial genético de aves de postura. Este estudio se base en el uso de modelos como herramienta para predecir el potencial de producción de huevos y consumo de nutrientes, constituyendo información valiosa para simular respuestas con diferentes poblaciones, además de ofrecer conocimiento del sistema involucrado en la producción de huevos.
14
artículo
Publicado 2024
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Enlace
La rápida globalización y la creciente necesidad de comunicación interlingüística requieren corpus modernos y en tiempo real para ayudar a los estudiantes de idiomas. Los métodos tradicionales para crear dichos corpus, especialmente en español, son inadecuados debido a su incapacidad para procesar la gran cantidad de datos no estructurados disponibles en internet. En este estudio se exploran las metodologías de inteligencia artificial (IA) para la adquisición automática de documentos en español de la web, preprocesándolos y clasificándolos con el fin de construir un corpus vasto y flexible para el aprendizaje del español. La investigación aplica el rastreo web mediante el framework Scrapy para recopilar datos, que luego se limpian y clasifican utilizando modelos avanzados de procesamiento del lenguaje natural (PLN). En concreto, el estudio emplea el algoritmo BERT (Bidirec...
15
artículo
Publicado 2020
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The objective was to understand the use and importance of genetic markers used in studies of genetic diversity in potatoes. The most relevant publications of the last twenty years were reviewed in SciELO, LILACS and PUBMED databases scrutinizing the technique used, the main results obtained from the use and evolution of the main marking methodologies in recent years and a better understanding of the techniques most commonly used, concluding that potato cultivars discriminate more accurately with DNA-based markers, since protein-based markers do not discriminate in their entirety.
16
artículo
Publicado 2022
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The aim this study is evaluate the usefulness of relation between future cash flows with liability, it´s identified how ratio ability to paid debts, to forecast the financial crises. The analysis is made for companies of Argentina Capital Market, that it faces a context with a strong macroeconomic imbalance. The conclusion what arrives in this study point out that ability to paid debts measure core operating income shows most accuracy that ability to paid debts for the EBITDA, net income, operating flows cash and the Z-score Altman (1968). Moreover, the companies with a higher leverage and less profitability have a higher possibility of get in financial crisis, and it´s found that main cause of financial crisis is the drop of operating incomes.
17
tesis doctoral
Publicado 2013
Enlace
Enlace
Descargue el texto completo en el repositorio institucional de la Pontifícia Universidade Católica do Rio de Janeiro: https://doi.org/10.17771/PUCRio.acad.23884
18
artículo
Publicado 2025
Enlace
Enlace
Objective: To present the development of a web application prototype based on Artificial Intelligence (AI) for the early detection of respiratory diseases, in order to explore its applicability in timely diagnostic support. Materials and Methods: It uses the agile Scrumban methodology, which combines the Scrum structure with the flexibility of Kanban, allowing adaptive workflow management. The prototype design included the integration of machine learning models, such as convolutional neural networks (CNNs), applied to simulated and open-access clinical data. Expected results: The prototype incorporates a web interface aimed at healthcare professionals, with functionalities for patient management and preliminary data analysis using AI. Its application is expected to improve the accuracy of initial diagnosis and facilitate integration in resource-limited settings. Conclusions: This advance...
19
artículo
Publicado 2020
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La precisión del habla es un indicador para evaluar el lenguaje de niños con implante coclear (IC). Verificar la enseñanza que aumenta esa precisión, y cómo las medidas de eficiencia pueden ser adoptadas, son cuestiones relevantes. El presente trabajo evaluó la adquisición de la precisión del habla controlada por figuras de escenas, usando oraciones, después de la enseñanza basada en equivalencia. Participaron ocho niños con IC, lectores. Las oraciones tenían [sujeto]-[verbo]-[objeto]. La enseñanza consistió en seleccionar figuras y construir oraciones impresas, condicionalmente a las oraciones dictadas. El nombramiento y la lectura fueron supervisadas por múltiples sondas. Dos jueces transcribieron las vocalizaciones de los participantes y la precisión fue medida por la correspondencia con fonemas objetivo de las oraciones. Todos aumentaron la precisión del habla ante l...
20
artículo
Publicado 2023
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The article explores the use of convolutional neural networks, specifically ResNet-50, to detect weevils in corn kernels. Weevils are a major pest of stored maize and can cause significant yield and quality losses. The study found that the ResNet-50 model was able to distinguish with high precision between weevil-infested corn kernels and healthy kernels, achieving values of 0.9464 for precision, 0.9310 for sensitivity, 0.9630 for specificity, 0.9469 for quality index, 0.9470 for the area under the curve (AUC) and 0.9474 for the F-score. The model was able to recognize nine out of ten weevil-free corn kernels using a minimal number of training samples. These results demonstrate the efficiency of the model in the accurate detection of weevil infestation in maize grains. The model's ability to accurately identify weevil-affected grains is critical to taking rapid action to control th...
