RI ITBA :: Examinando porby browse.metadata.subject "COVID-19"

Examinando por Materia "COVID-19"

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Análisis de datos de pacientes y consultantes con COVID-19
(2021-09-29) Pingarilho, Pedro Remigio; Gómez, Fermín; Di Luca, Miguel; Gambini, Juliana
Análisis de la mecánica respiratoria por imágenes de tomografía por impedancia
(2021-05-18) Ems, Joaquín; Madorno, Matías
"El siguiente trabajo consiste en la utilización de la tomografía por impedancia eléctrica (EIT) como tecnología para monitoreo de pacientes que requieren asistencia respiratoria mecánica o que podrían necesitarla. Esto permite el seguimiento de la ventilación pulmonar de manera regional al pie de la cama, sin radiaciones ionizantes y con una resolución temporal mayor que en el caso de la tomografía computada. Esta tecnología fue especialmente útil, con la necesidad surgida a partir de la pandemia de COVID-19 para evaluar algunas de las estrategias de asistencia de estos pacientes."
COVID-X: sistema de ayuda en la toma de decisiones en el diagnóstico médico para la enfermedad COVID-19
(2020) Aquili, Alejo; Bassani, Santiago; Sanguineti Arena, Francisco; Mon, Alicia; Herrera, Sergio Gustavo
"En el presente se detallan el diseño y desarrollo de un sistema informático para la ayuda en la toma de decisiones en el diagnóstico médico de la enfermedad COVID-19. Este sistema provee una herramienta que puede detectar neumonía causada por esta enfermedad, manifestada en imágenes rayos-x de tórax. Para lograr esto se implementó un algoritmo basado en redes neuronales convolucionales, y se complementó con otro modelo en base a características clínicas de los pacientes. Basados en los resultados obtenidos en las pruebas experimentales, se muestra la potencial utilidad de estas tecnologías en el proceso de diagnóstico como herramienta complementaria. El sistema desarrollado, llamado COVID-X, no solo incluye el modelo de inteligencia artificial, sino que también una plataforma web que facilita su uso para todo personal médico que lo requiera."
Declarative memory consolidation dynamics: new time windows and its implications for clinical application
(2020) Moyano, Malen D.; Bonilla, Matías; Blanco, Marcelo F.; Brusco, Luis Ignacio; Pedreira, María Eugenia; Kaczer, Laura; Forcato, Cecilia
"After encoding, memories go through a labile state followed by a stabilization process known as consolidation. Once consolidated they can enter a new labile state after the presentation of a reminder (cue) of the original memory, followed by a period of re-stabilization (reconsolidation). In both processes, once stabilization/re-stabilization is accomplished the memory cannot be modified. Currently there are studies that show a rapid stabilization after 30 min, while others studies show that stabilization occurs after 6h. However, there are no studies evaluating short and long delays simultaneously. Knowing that there are spontaneous waves of destabilization (without the re-exposure to keys linked to learning) on which the consolidation and memory persistence depend, here we investigate whether declarative memories in humans suffer spontaneous labilization/stabilization processes after learning or if they only pass through a single time window of lability."
Detección de COVID-19 en radiografías de tórax
(2021) Iglesias, Sebastián
"Este estudio tiene la intención de comparar dos clasificadores (“Random Forest” y SVM) que reciban como entrada el resultado de la técnica de Histograma de Gradientes Orientados para radiografías de tórax, de pacientes con neumonía sin presencia del virus COVID-19, pacientes que si presentan el virus COVID-19 y pacientes sin ninguna de esas enfermedades."
Emotional episodic memory formation during Covid-19 quarentine: preliminary results
(2020) León, Candela S.; Bonilla, Matías; Urreta Benítez, Facundo A.; Forcato, Cecilia
"Episodic memory is the ability to recover past experiences and projects ourselves into the future. It is related to contextual information (both spatially and temporally). This type of memory is highly sensitive to aging, the passage of time, forgetfulness, interference and confusion. Furthermore, episodic memory processes are modulated by both anxiety and depression. People's mental health has deteriorated due to the Covid-19 pandemic, showing higher levels in both values. There is a general consensus that pleasant or aversive events are better remembered than neutral events. Regarding false memories, there is no such consensus. Some authors found that emotional content generates more false memories, however, it was also found that negative content reduces false memories. In this study we evaluated the effects of emotional variables, such as anxiety and depression, on memory encoding and consolidation of true and false details of aversive and neutral stories."
Evolución del COVID-19 en Argentina: comparación con China, España e Italia
(2020-11) Banús, Verónica Gisela; Soliani, Valeria
"El objetivo de este estudio es entender si Argentina tomó medidas preventivas suficientes y a tiempo para evitar los picos de casos positivos y muertes que tuvieron China, España e Italia. Con el fin de poder realizar dicho estudio, se hará un análisis comparativo entre los cuatro países anteriormente citados para entender cuál y cómo fue la evolución de sus contagios y muertes, qué medidas preventivas tomaron, cuál fue el impacto que las mismas tuvieron, entre otras."
False memory formation during Covid-19 quarantine: age, sleep quality and emotional variables. Preliminary results
(2020) Bonilla, Matías; León, Candela S.; Urreta Benítez, Facundo A.; Lippmann-Mazzaglia, Natalia; Calvo, Camila; Garrido, Manuel; Forcato, Cecilia
"False memories are memories of events that did not happen or are altered in their content. It has been shown that not only small distortions can be introduced into old memories but also entire memories of events that never occurred can be implanted. Age is a crucial factor in the formation of false memories. Currently there is no consensus on which age range is more vulnerable. Since the COVID-19 pandemic, anxiety and depression values are increased and these factors also influence the formation of false memories.Thus, our aim was to study how age and mood factors, such as anxiety and depression, influence the formation of false memories."
Formación de memorias episódicas aversivas durante la pandemia por COVID-19
(2021) León, Candela S.; Bonilla, Matías; Urreta Benítez, Facundo A.; Brusco, Luis Ignacio; Wang, Jingyi; Forcato, Cecilia
"La memoria episódica es la capacidad de recordar qué, dónde y cuándo ocurrió un evento. Además, existe consenso en cuanto a que los eventos agradables o aversivos se recuerdan mejor que los eventos neutrales y que los procesos de memoria episódica están modulados por la ansiedad y la depresión. La salud mental de las personas se ha deteriorado debido a la pandemia de COVID-19, mostrando un aumento de los síntomas de ansiedad y depresión. Aquí, planteamos la hipótesis de que el aumento de síntomas negativos modifica la capacidad de codificar y consolidar recuerdos. Para estudiar esto, evaluamos los efectos del contexto emocional en la codificación y consolidación de recuerdos episódicos neutrales y aversivos."
Identification performance during quarantine by COVID-19 pandemic: Influence of emotional variables and sleep quality
(2021) Urreta Benítez, Facundo A.; León, Candela S.; Bonilla, Matías; Flores-Kanter, Pablo Ezequiel; Forcato, Cecilia
"The COVID-19 pandemic has caused major disruptions in people’s lives around the globe. Sleep habits and emotional balance have been disturbed in a way that could be comparable to the havoc caused by a deep personal crisis or a traumatic experience. This unfortunate situation provides a unique context in which to study the impact of these imbalances on cognitive processes. In particular, the field of eyewitness science could benefit from these conditions, since they are also often present in crime victims, but can only be generated in the laboratory up to a certain ethical and practical limit. For several decades, eyewitness studies have tried to discover what variables affect people’s ability to properly recognize faces. However, the disparity of experimental designs and the limitations of laboratory work could be contributing to the lack of consensus around several factors, such as sleep, anxiety, and depression. Therefore, the possibility of observing the influence of these agents in natural contexts could shed light on this discussion. Here, we perform simple and repeated lineups with witnesses of mock-crime, considering the conditions related to the COVID-19 pandemic, which to some extent allow emulating the deterioration in general well-being that often afflicts crime victims. For this, 72 participants completed symptomatology scales, and watched a video portraying a staged violent episode. Subsequently, they gave testimony and participated in two lineups, in which we manipulated the presence/absence of the perpetrator, to recreate critical scenarios for the appearance of false recognitions. We found an increase in recognition errors in those individuals who did not have access to the perpetrator during the Initial lineup. Additionally, the conditions of the pandemic appear to have adversely affected the ability to witness and accurately perform lineups. These results reaffirm the need to move toward the standardization of research practices and methods for assessing testimonial evidence, especially in relation to the results of the lineups. Considering the degree of fallibility of these processes can lead to a reduction of wrongful convictions."
Impairment of aversive episodic memories during covid-19 pandemic: The impact of emotional context on memory processes
(2021) León, Candela S.; Bonilla, Matías; Urreta Benítez, Facundo A.; Brusco, Luis Ignacio; Wang, Jingyi; Forcato, Cecilia
"Episodic memory is the ability to recall about what, where and when the event happened. Furthermore, there is a consensus that pleasant or aversive events are better remembered than neutral events and that episodic memory processes are modulated by anxiety and depression. People's mental health has deteriorated due to the COVID-19 pandemic, showing a growth in anxiety and depressive symptoms. Here, we hypothesize that the increase in negative symptoms modifies the ability to encode and consolidate memories. To study this, we evaluated the effects of emotional context on encoding and consolidation of aversive and neutral episodic memories."
Internal Structure of Beck Hopelessness Scale: an analysis of method effects using the CT-C(M–1) model
(2021) Flores-Kanter, Pablo Ezequiel; Toro, Ronald; Alvarado, Jesús M.
"He construct validity in relation to the dimensionality or factor structure of the Beck Hopelessness Scale (BHS) has long been debated in psychometrics. Irrelevant variance due to item wording (method effects) can distort the factor structure, and recent studies have examined the method factor’s role in the factor structure of the BHS. However, the models used to control the method effects have severe limitations, and new models are needed. One such model is the correlated traitcorrelated method minus one (CT-C(M-1), which is a powerful approach that gives the trait factor an unambiguous meaning and prevents the anomalous results associated with fully symmetrical bifactor modeling. The present work compares the fit and factor structure of the CT-C(M-1) model to bifactor models proposed in previous literature and evaluates the convergent validity of the CT-C(M-1) model and its discriminatory capacity by taking suicidal ideation as the criterion variable. This study used a large and heterogeneous open mode online sample of Argentinian people (N = 2,164). The results indicated that the CT-C(M-1) model with positive words as referenced items achieves the most adequate factor structure. The factorial scores derived from this model demonstrate good predictive and discriminating capabilities."
Inventario de Ideación Suicida Positiva y Negativa (PANSI): propiedades psicométricas en universitarios peruanos
(2021) Rodas-Vera, Nikolai Martin; Toro, Ronald; Flores-Kanter, Pablo Ezequiel
"Es necesario contar con instrumentos que evalúen la ideación suicida, dado que es uno de los primeros factores que conllevan al suicidio. La presente investigación realizó un proceso de adaptación del Inventario de Ideación Suicida Positiva y Negativa (PANSI) para que pueda ser empleado en universitarios peruanos. Se estudiaron dos muestras, una antes y otra durante la pandemia por COVID-19. A nivel metodológico, se siguió un procedimiento racional con jueces expertos y con sujetos de la población para conseguir la equivalencia cultural y conceptual del instrumento; mientras que, en el nivel estadístico, se probaron tres modelos teóricos, unidimensional, ortogonal y oblicuo. El modelo de dos factores correlacionados reveló mejores índices de ajustes para ambas muestras, con niveles óptimos de confiabilidad. Se concluye en una nueva versión del PANSI y se discuten sus bases teóricas para mejorar las inferencias a partir de este instrumento."
Non-pharmaceutical intervention to reduce COVID-19 impact in Argentina
(2022-05) García Violini, Demián; Sánchez-Peña, Ricardo; Moscoso-Vásquez, Marcela; Garelli, Fabricio
"This work is focused on the multilevel control of the population confinement in the city of Buenos Aires and its surroundings due to the pandemic generated by the COVID-19 outbreak. The model used here is known as SEIRD and two objectives are sought: a time-varying identification of the infection rate and the inclusion of a controller. A control differential equation has been added to regulate the transitions between confinement and normal life, according to five different levels. The plasma treatment from recovered patients has also been considered in the control algorithm. Using the proposed strategy the ICU occupancy is reduced, and as a consequence, the number of deaths is also decreased."
Non-pharmaceutical intervention to reduce COVID-19 impact in Argentina
(2021-06-21) García Violini, Demián; Sánchez-Peña, Ricardo; Moscoso-Vásquez, Marcela; Garelli, Fabricio
"This work is focused on the multilevel control of the population confinement in the city of Buenos Aires and its surroundings due to the pandemic generated by the COVID-19 outbreak. The model used here is known as SEIRD and two objectives are sought: a time-varying identification of the infection rate and the inclusion of a controller. A control differential equation has been added to regulate the transitions between confinement and normal life, according to five different levels. The plasma treatment from recovered patients has also been considered in the control algorithm. Using the proposed strategy the ICU occupancy is reduced, and as a consequence, the number of deaths is also decreased."
Online learning as an alternative learning modality in Ecuador’s education institutions amidst crises and outbreaks: A SWOT analysis
(2022-11) Rochina Chisag, Ángel Geovany; Cortezo Tabuena, Almighty
"The primary objective of this paper is to analyse the weaknesses, threats, strengths, and opportunities (SWOT matrix analysis) of online teaching and learning in educational institutions (primary, secondary, and higher education) in Ecuador during the COVID-19 pandemic. A qualitative study of the descriptive documentary type was conducted, where the information obtained from virtual education in times of crisis and outbreaks was collected and analysed. It was found that educational centers at different levels of schooling still continued to use traditional teaching methods and processes subject to old procedures as a basis for their incursion into virtuality, although other establishments began to handle combined modalities such as blended and hybrid online (e-learning) modes of learning. In conclusion, the deadly coronavirus disease (SARS-COV-2) abruptly halted much human activity worldwide. This forced hesitant educational systems that still used traditional face-to-face teaching methods in classrooms to move and change to online learning in many regions, regardless of the socioeconomic level and demographics of the students. Aside from determining how to deal with the problems and challenges of virtual education during epidemics and natural disasters, it is clear that the number of technology-driven educational start-ups has increased significantly"
Pandemia COVID-19: ¿un cambio de paradigma en Occidente?
(2020-05) Conti, Merlina; Bellucci, Pamela; Schick, Martín; Trobbiani, María Julieta; Jullier, Natalia; Panza, Gustavo; Garayalde, Damián; Mateo, Nahuel; Rojas, Ezequiel; Sánchez, Cristian
"Elaboramos recomendaciones basadas en la evidencia para administrar los recursos imprescindibles en los centros sanitarios, en contexto de pandemia, en un país de bajos recursos económicos. Se realizaron búsquedas MedLine utilizando términos MeSH “Pneumonia, viral/prevention and control”, “Pneumonia, viral/transmission”, “Coronavirus Infections/prevention and control”, “Coronavirus Infections/transmission”, “COVID-19”, “Masks/classification”, “Masks/microbiology”, “Respiratory Protective Devices”, entre otros. Se recomienda que la población general porte mascarilla. A nivel institucional, la ventilación y el correcto distanciamiento de las camas son medidas de prevención efectivas. El factor más importante en la contención de un brote es la identificación oportuna de pacientes infectados. Se recomienda el uso de presión negativa y sistemas de ventilación. Ante la escasez de mascarillas tipo N95, el uso de protectores faciales totales y mascarilla quirúrgica es una opción factible. Proponemos una estrategia integral con medidas de afrontamiento para entidades sanitarias y la sociedad en general."
Pandemia y Poderes Judiciales: un punto de apalancamiento histórico en la incorporación de tecnologías
(2020-12) Castiglioni, Sara Noemí
"Este artículo se propone describir las estrategias de incorporación de tecnologías que implementaron los Poderes Judiciales de Argentina en relación con la pandemia de COVID-19 durante el período del 17 marzo a julio 2020, compararlas con modelos de aprendizaje organizacional y reflexionar sobre la posibilidad de utilizar este acontecimiento histórico como punto de apalancamiento para la incorporación de tecnologías en el servicio de justicia con miras a construir un servicio más cercano al ciudadano y de acuerdo con los paradigmas de gobierno abierto. Esta investigación se encuadra bajo un diseño cualitativo, de carácter inductivo, exploratorio y flexible. Para responder a las preguntas de investigación se realizaron 34 entrevistas en profundidad y 27 observaciones participantes."
Pandemia y reconocimiento: ¿Cómo impactan las condiciones del aislamiento en la memoria de testigos oculares?
(2021) Urreta Benítez, Facundo A.; Urreta Benítez, Facundo A.; León, Candela S.; Bonilla, Matías; Flores-Kanter, Pablo Ezequiel; Forcato, Cecilia
Performance in lineups during covid-19 pandemic: influence of lock-down side effects
(2021) Urreta Benítez, Facundo A.; León, Candela S.; Bonilla, Matías; Flores-Kanter, Pablo Ezequiel; Forcato, Cecilia
"Our main objective was to study the impact of emotional and behavioral variables in the witnessing processes, using a natural context that generates conditions like those of a real crime."

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