Nivel de conocimiento de bioseguridad durante la pandemia COVID-19 en egresados de Estomatología de la Universidad Privada Antenor Orrego Trujillo – 2020

Objetivo: Determino nivel de conocimiento de bioseguridad durante la pandemia COVID – 19 en egresados de estomatología de la Universidad Privada Antenor Orrego Trujillo – 2020. Material y método: El estudio fue Transversal y Observacional, Constituido por un total de 270 egresados de la Escuela Profesional de Estomatología de la Universidad Privada Antenor Orrego, quienes respondieron un cuestionario virtual por medio de Google forms, el cuestionario fue validado por 8 expertos, Para la investigación se utilizará tablas de distribución de frecuencias unidimensionales y bidimensionales, se utilizó la prueba de independencia de criterios Chi cuadrado. Resultados: Se encontró que el nivel de conocimiento de bioseguridad durante la pandemia COVID – 19 en egresados de estomatología de la Universidad Privada Antenor Orrego es buena en el 57% de la población, quiere decir que 154 egresados de un total de 270. Conclusión: El presente estudio determinó que el nivel de conocimiento de bioseguridad durante la pandemia COVID – 19 en egresados de estomatología de la Universidad Privada Antenor Orrego fue bueno en un 57%.Objective: Determine the level of biosafety knowledge during the COVID-19 pandemic in stomatology graduates from the Antenor Orrego Trujillo Private University - 2020. Material and method: The study was Cross-sectional and Observational, made up of a total of 270 graduates of the Professional School of Stomatology of the Antenor Orrego Private University, who answered a virtual questionnaire through Google forms, the questionnaire was validated by 8 experts, For the investigation, one-dimensional and two-dimensional frequency distribution tables will be used, the Chi-square criteria independence test was used. Results: It was found that the level of knowledge of biosafety during the COVID-19 pandemic in stomatology graduates from the Antenor Orrego Private University is good in 57% of the population, meaning that 154 graduates of a total of 270. Conclusion: The present study determined that the level of knowledge of biosafety during the COVID-19 pandemic in stomatology graduates from the Antenor Orrego Private University was 57% good.Tesi

Evolución de la ventaja comparativa en la exportación de minerales de cobre y sus concentrados en relación al APEC, en el período 2009-2018

El Perú es un país tradicionalmente minero y es el segundo exportador de cobre, plata y zinc a nivel mundial, y sus principales mercados de exportación se encuentran en el APEC. Entre el 2009 y 2018, el Perú ha cuadruplicado sus ingresos por exportaciones FOB de mineral de cobre y sus concentrados hacia él APEC desde 2 751 hasta 10 932 millones de US$, representando en promedio el 75$ 2 751 to US $ 10 932 million, representing an average of 75% of its exports of the product to the world during that period. period. The objective of the thesis is to determine the trends in the evolution of the Comparative Advantages in the export of this product in relation to the main APEC markets. FOB export data were used, the main markets were identified and the revealed comparative advantage indices were calculated. Positive results were obtained with the Philippines, Japan, China, South Korea, and the APEC group, revealing that there are comparative advantages in the export of this product, which explains the importance of Peru in the international market. In the cases of the Philippines, Japan and South Korea, these comparative advantages are being lost. In the case of Chile, they are already disadvantages, while with China they have been improving. With respect to the APEC group, a growing comparative advantage is revealed, but with a very important dependence on the trend of this indicator with respect to China. The assessment of these trends could serve to guide production and marketing strategies in the coming decades

Retrospective analysis of the treatment of central giant cell granuloma at Piracicaba Dental School in the oral and maxillofacial area between 1996 and 2006

Orientador: Jose Ricardo Albergaria BarbosaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de PiracicabaResumo: O granuloma central de células gigantes (GCCG) é uma lesão benigna que acomete tanto a maxila como a mandíbula, representando menos de 7% de todos os tumores benignos dos maxilares. A sua etiologia é incerta, sendo implicados fatores genéticos. O GCCG pode manifestar-se como lesões de grandes dimensões com características de agressividade ¿ como crescimento rápido, reabsorções radiculares ou parestesia e tendência à recidiva, ou como lesões pequenas, uniloculares, sem aspectos de agressividade. A modalidade de tratamento mais empregada é a curetagem, associada ou não a ostectomia periférica. No entanto são relatadas outras modalidades de tratamento, como a administração de corticosteróides, calcitonina ou a-interferon. Os índices de recidiva podem ser altos, variando de 0% a 49%. A ocorrência de recidiva parece depender do comportamento clínico da lesão, da localização anatômica e da modalidade de tratamento instituída. O presente estudo retrospectivo analisou o tratamento de GCCG no período de janeiro de 1996 a julho de 2006 atendidos pela Área de Cirurgia Buco-Maxilo-Facial da FOP ¿ Unicamp, correlacionando seus aspectos clínicos. Foram analisados 14 casos (9M; 5F) com uma média de idade de 18,5 (variando de 5 ¿ 59) anos, sendo a maxila o osso mais acometido. Do total, 5 casos foram tratados cirurgicamente por meio de curetagem associada a ostectomia periférica, e 9 foram tratados clinicamente. A administração intralesional de corticosteróides foi iniciada nestes casos, sendo o tratamento com calcitonina instituído na ausência de uma resposta clínica satisfatória. O tempo médio de tratamento com corticosteróides foi de 3,84 (±3,87) meses, sendo que em dois casos foi instituída a administração de calcitonina. O tempo médio de tratamento com calcitonina foi de 18,8 (±7,94) meses, sendo que em um caso não foi observada boa evolução clínica. Nenhum caso de recidiva foi observado após um acompanhamento de 38,22 (variando de 3 ¿ 174) mesesAbstract: The central giant cell granuloma is a benign lesion of the jaws, accounting for less than 7% of all benign lesions of the jaws. Its origin is unknown, but it has been suggested that genetic factors may be implicated. The central giant cell granuloma demonstrates a variable clinical behavior, ranging from slowly growing painless swelling to rapidly expanding aggressive tumors, characterized by pain, local destruction of bone, root displacement or resorption and a significantly high recurrence rate. Surgical treatment represented by curettage with peripheral ostectomy or not is the most widely used procedure. However, other treatment options such as intralesional corticosteroids, daily calcitonin administration or a-interferon are advocated. The recurrence rate may be high (ranging form 0% to 49%), and it seems to depend on the clinical behavior, the treatment employed, and anatomic site envolved. The aim of this study was to report the results of long-term follow up of the management of central giant cell granulomas. A retrospective analysis was conducted from January 1996 to July 2006, analyzing all cases of the Oral and Maxillofacial Area, Piracicaba Dental School. The sample was represented by 14 patients (9 M; 5 F) with a mean age of 18.5 (ranging from 5 ¿ 59) years, and the maxilla was involved in most of the cases. Regarding the treatment modality, 5 cases were treated by curettage with peripheral ostectomy, and a medical treatment was instituted in the others. In these cases, intralesional injections with corticosteroids were initiated, and the treatment with calcitonin was employed only if proper resolution was not achieved. The mean time of treatment with corticosteroids was 3.84 (±3.87) months, but in two cases calcitonin daily administration was initiated. The mean time of treatment with calcitonin was 18.8 (±7.94) months, but in one case calcitonin did not seem to be effective. No case of recurrence was observed after a mean follow-up of 38.22 (ranging from 3 ¿ 174) monthsDoutoradoCirurgia e Traumatologia Buco-Maxilo-FaciaisDoutor em Clínica Odontológic

Bone growth and sexual dimorphism at birth in intrauterine-growth-retarded rats

This paper addresses the effect of a reduction of uterine blood flow (RUB) on postcranial bone growth in rats. The objectives were: (1) to discover and characterize the changes evoked by growth retardation through a reduction in placental blood flow, (2) to see if the resulting growth retardation is different in each bone, and (3) to analyze any sex-specific features. RUB was induced by the partial bending of uterine vessels at day 1 of pregnancy. Control and sham-operated animals were also included. The animals were X-rayed at birth. The lengths and widths of the humerus, radius, and femur and pelvic length, interischial, interpubic, and pubic widths were measured. Data were analyzed by ANOVA and LSD post hoc tests. The intersubject analysis showed significant differences between groups and non-significant differences between sexes. In males, sham-operated and RUB showed significant differences in pelvic lengths and widths, and humeral, radial, femoral, and tibial widths. In females, there were significant differences only for humeral widths, radial lengths and widths, and femoral and tibial widths. We conclude that reduced blood flow delays appendicular bone growth as observed at birth. Pelvic length was more affected than that of the limbs. The widths of the pelvic and limbs bones, in turn, were more altered than the lengths, and the growth of the males more than that of the females. Partial bending of uterine vessels compromised postcranial growth, though under such disadvantageous circumstances the females proved to be more capable of growing and thus more resilient than the males.Fil: Oyhenart, Evelia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Antropología. Cátedra de Antropología Biológica IV; ArgentinaFil: Cesani Rossi, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Castro, Luis Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Estadística; ArgentinaFil: Quintero, Fabian Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Antropología. Cátedra de Antropología Biológica IV; ArgentinaFil: Fucini, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Luna, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Guimarey, Luis Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Provincia de Buenos Aires. Ministerio de Salud. Hospital de Niños "Sor María Ludovica" de La Plata; Argentin

Confort higrotérmico para actividades en espacios exteriores: periodo cálido, en clima cálido seco extremo

El tiempo de duración de las actividades en espacios exteriores en clima cálido seco extremo, depende de las condiciones de confort higrotérmico de los usuarios. Además por condiciones de ambiente térmico existen riesgos como deshidratación o golpe de calor. El objetivo del presente estudio fue estimar condiciones confort por temperatura y humedad relativa de usuarios de espacios exteriores de un centro recreativo de Mexicali, Baja California, México. Se presenta la estimación de temperatura y humedad relativa neutral con rangos de confort térmico para espacios exteriores, en el período cálido en un clima desértico. Se diseñó un cuestionario basado en ISO 10551, se midieron temperatura de bulbo seco y humedad relativa. Se aplicaron 822 encuestas en julio y agosto del 2008. Se estimaron temperatura y humedad relativa neutra y rangos de confort con el método de medias por intervalo de sensación térmica. El análisis se hizo para tres niveles de actividad: pasiva, moderada e intensa y uno combinado con los tres niveles. El período analizado presentó un comportamiento de clima asimétrico. Los valores de temperatura son aproximadamente simétricos con respecto a sus rangos de confort térmico, mientras que el confort por humedad relativa en actividad moderada e intensa fue asimétrico. Las temperaturas y humedad relativa neutras obtenidas muestran que los sujetos en actividad intensa, con práctica periódica de ejercicio y hábitos apropiados a las condiciones de clima, tienen una temperatura y humedad relativa de confort similar a aquellos con actividad pasiva.The duration of outdoor activities in extreme dry in warm weather, depends on the hygrothermal comfort conditions for users. In addition to the thermal environment conditions there are risks such as dehydration or Heat Stroke. The objective of this study was to estimate the comfort conditions for temperature and relative humidity of outdoor users of a recreational center in Mexicali, Baja California, Mexico. This work shows the estimated neutral temperatura, neutral relative humidity and thermal comfort ranges during the warm period for a public recreational green area located on a desert climate. A questionnaire was designed based on the scale of thermal sensation of ISO 10551 were measured dry bulb temperatura and relative humidity. A total of 822 questionnaires were applied during the months of July and August 2008. By estimated neutral temperatura, neutral relative humidity and comfort range with a statistical method of correlation. The analysis was done for three activity levels: passive, moderate e intense, besides the three levels together. The period of climate analyzed was asymmetric. The neutral temperature values obtained are approximately symmetrical with respect to the thermal comfort range, while the relative humidity comfort for moderate and intensity activity was asymmetric. The neutral temperatures and relative humidity obtained show that the intense activity in subjects with regular exercise and practice habits appropriate to the weather conditions, had a temperature of comfort similar to subjects with passive activity.Peer Reviewe

Implementation of Peer Tutoring as a Strategy to Promote the Development of Basic Mathematical Skills in University Students

One of the biggest problems in higher education institutions in Mexico is the high failure rate in the first math courses in areas focused on technology. Tutoring, as a fundamental tool in the integral development of engineering students plays an important role in dealing with this type of phenomena, the role it plays is decisive in controlling or diminishing one of the most worrying indicators: desertion. As a measure that aims to correct these rates, corrective courses of Precalculus have been developed and implemented using the strategy of peer tutoring, which in our case was divided into three different levels: basic, intermediate and advanced. The effectiveness of this strategy was evaluated with two instruments: the first was a placement level test, according to which the student was assigned a course adapted to their specific needs detected in the evaluation; At the end of these courses, a second test was conducted to determine the progress of each student. As a result, it is expected that a high percentage of participants will acquire the necessary mathematical skills to pass to the next level and guarantee their permanence in the following courses with follow-up in academic advising. Keywords: Peer tutoring; academic advising; desertion; Precalculus courses.

Comparative analysis of growth and sexual maturation in girls of Santa Rosa (La Pampa) and La Plata (Buenos Aires)

El objetivo del trabajo fue analizar comparativamente el crecimiento en relación con la menarca entre niñas de dos poblaciones urbanas argentinas. Se realizó un estudio antropométrico transversal, descriptivo-comparativo en 2.474 escolares comprendidas entre 8,0 y 16,9 años procedentes de Santa Rosa (SR) y La Plata (LP). Se registraron presencia de menarca y las variables antropométricas peso corporal, estaturas total y sentado, perímetro braquial, pliegues subcutáneos tricipital y subescapular. Fueron calculados índices de masa corporal, subescapular/tricipital y áreas muscular y adiposa del brazo. El grupo de estudio fue dividido en 4 grupos según ciudad y presencia de menarca. La caracterización socio-ambiental establecida mediante encuesta estructurada indicó diferencias significativas entre ciudades para condición de tenencia, características constructivas y servicios de las viviendas, cobertura de salud, asistencia monetaria, nivel educativo y ocupación laboral de los progenitores marcando un mayor bienestar en las jóvenes de SR. La menarca a una edad promedio de 12,7 años fue más prevalente en SR (40,6%) que en LP (33,7%) (c2=12,9; p<0,01). El ANOVA indicó diferencias significativas entre ciudades para estaturas total y sentado y área muscular (p<0,01), peso corporal y perímetro braquial (p< 0,05) que en general permanecieron en la comparación post hoc por edad en los grupos madurativos pre-menarca y post-menarca. La presencia de un tamaño corporal reducido, a expensas de menor estatura total, área muscular y longitud de piernas en las jóvenes de LP, asociados a una menor prevalencia de menarca en esta ciudad, representaría el costo adaptativo a un ambiente de menor bienestarThe aim of this study was to analyze growth in relation to menarche in girls from two Argentinean urban populations. We performed a comparative-descriptive cross sectional study in 2474 schoolchildren between 8.0 and 16.9 years old from Santa Rosa (SR) and La Plata (LP) cities. We registered the presence of menarche and anthropometrics variables of body weight, total and sitting heights, arm circumference, triceps and subscapular skinfolds. Body mass index, subscapular / triceps index and muscle and fat arm areas were calculated. The study group was divided into 4 groups according to the city and menarche. The socio-environmental structured survey indicated significant differences between cities with these variables: tenure status, building materials and services, health care coverage, cash assistance, educational level and parents occupation, therefore establishing a higher welfare in youngsters of SR. Menarche at a mean age of 12.7 years old was more prevalent in SR (40.6%) than in LP (33.7%) (c2=12.9; p<0.01). The ANOVA indicated significant differences between cities in total and sitting heights and muscle area (p <0.01), body weight and arm circumference (p <0.05) which were generally held in the post hoc comparison by age in pre-menarche and post-menarche groups. The presence of a small body size at the expense of lowering in: total height, muscle area and leg length in LP youngsters, associated with a lower prevalence of menarche in this city, it would represents the adaptive cost of a lower welfare environment.Fil: Torres, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras; ArgentinaFil: Luis, María Antonia. No especifica;Fil: Cesani Rossi, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Luna, María Eugenia. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Castro, L.E.. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Quintero, Fabian Anibal. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Oyhenart, Evelia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentin

Overweight and obesity in schoolchildren from Brandsen and its relationship with socio-environmental characteristics of residence

Introducción: Los factores socioambientales desempeñan un papel esencial en la etiología del sobrepeso (S) y la obesidad (O) y constituyen el llamado “entorno obesogénico”. Los objetivos del presente trabajo son: a) estimar las prevalencias de sobrepeso y obesidad en escolares de 3 a 14 años del partido de Brandsen (Provincia de Buenos Aires) y b) analizar la probabilidad de ocurrencia de sobrepeso y obesidad en relación a las condiciones socioambientales de residencia. Población y métodos: Se relevaron peso y talla de 989 escolares, de ambos sexos, de 3-14 años de edad. Se determinaron S y O según los criterios de la International Obesity Task Force. Las prevalencias fueron comparadas entre sexos y edades. Los datos socioambientales, obtenidos a partir de encuestas, fueron procesados mediante Análisis de Componentes Principales (catPCA). Se empleó un Modelo Lineal Generalizado (link logit) para las variables S y O. Resultados: El 15,8% de los escolares presentó S y el 7,2% O, encontrándose diferencias estadísticas no significativas entre sexos y edades. El primer eje del análisis catPCA, discriminó con valores positivos los casos que presentaron las mejores condiciones socioambientales y negativos las más desfavorables. Hubo mayor probabilidad de niños obesos asociada a condiciones socioambientales adecuadas (mayor nivel educativo de padres, mayores ingresos y mejor acceso a servicios públicos), en tanto que se observó mayor probabilidad de niños con sobrepeso asociada a ambientes menos favorecidos. Conclusiones: Se concluye que la población escolar de Brandsen presenta elevadas prevalencias de sobrepeso y obesidad. La probabilidad de presentar sobrepeso es mayor en los niños provenientes de hogares con condiciones socioambientales desfavorables. La obesidad, en cambio, lo es en aquellos hogares que reúnen condiciones socioambientales favorables.Introduction: Environmental factors play an important role in the etiology of overweight (S) and obesity (O), constituting the "obesogenic environment”. The objectives of the present study are: a) to estimate overweight and obesity prevalences in 3 to 14 years-old schoolchildren from Brandsen (Provincia de Buenos Aires), and b) to analyze the probability of occurrence of overweight and obesity in relation to the socioenvironmental conditions of resident. Population and methods: Weight and height were measured in 989 boys and girls aged 3 to 14 years. S and O were estimated following the criteria suggested by the International Obesity Task Force. The prevalences of S and O were compared between genders and ages. The socio-environmental information was gathered according to surveys and processed by Categorical Principal Components Analysis (catPCA). Generalized Linear Model (link logit) against the variables S and O was employed. Results: S was found in 15,8% of schoolchildren and O in 7,2%. None significative statistics differences between both genders and ages, were found. The first axis of the catPCA discriminated the cases that presented better socio-environmental conditions with positive values and those with more unfavorable conditions with negatives values. Higher probability of obese children was associated with better socio-environmental conditions (higher educational level of parents, higher income and better access to public services), and higher probability of overweight children was associated with less favored environments. Conclusions: The schoolchildren population of Brandsen presents high overweight and obesity prevalences. The chance of presenting overweight is higher in children from households with adverse socio-environmental conditions. On the contrary, obese children are to be more found in households which have more favorable socio-environmental conditions.Fil: Cesani Rossi, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Luis, María Antonia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Torres, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras; ArgentinaFil: Castro, Luis Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Quintero, Fabian Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Luna, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; ArgentinaFil: Bergel Sanchís, María Laura. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Oyhenart, Evelia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET- La Plata. Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout". Universidad Nacional de La Plata. Facultad de Ciencias Veterinarias. Instituto de Genética Veterinaria; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentin

A Comparison between Frame-based and Event-based Cameras for Flapping-Wing Robot Perception

Perception systems for ornithopters face severe challenges. The harsh vibrations and abrupt movements caused during flapping are prone to produce motion blur and strong lighting condition changes. Their strict restrictions in weight, size, and energy consumption also limit the type and number of sensors to mount onboard. Lightweight traditional cameras have become a standard off-the-shelf solution in many flapping-wing designs. However, bioinspired event cameras are a promising solution for ornithopter perception due to their microsecond temporal resolution, high dynamic range, and low power consumption. This paper presents an experimental comparison between frame-based and an event-based camera. Both technologies are analyzed considering the particular flapping-wing robot specifications and also experimentally analyzing the performance of well-known vision algorithms with data recorded onboard a flapping-wing robot. Our results suggest event cameras as the most suitable sensors for ornithopters. Nevertheless, they also evidence the open challenges for event-based vision on board flapping-wing robots