710 research outputs found

    Characteristics of alcoholic drinks consumption and consumption pattern among Dental students.

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    Objetivo: Describir características del consumo de bebidas alcohólicas e identificar patrón de consumo en estudiantes de odontología de la Universidad San Sebastián, sede Concepción. Materiales y métodos: Estudio exploratorio, descriptivo, transversal, no experimental. La muestra estuvo constituida por 601 alumnos (65% del total). Se aplicaron dos cuestionarios durante el segundo semestre del año 2015. El primero: cuestionario estructurado diseñado para recolectar datos sobre el consumo de alcohol y sus características. El segundo: cuestionario autoadministrado de”Identificación de Trastornos Relacionados con el Consumo de Alcohol”. Los datos fueron analizados mediante estadígrafos descriptivos. La asociación de la variable dependiente “alcohol” con las variables independientes “edad”, ”género”, “ubicación geográfica de origen” y “semestre académico” fueron evaluados mediante una prueba de regresión logística binomial. Sólo los datos de los sujetos que consumían alcohol fueron evaluados. El nivel de significación empleado en todos los casos fue de α≤0,05. Resultados: El 15% de los estudiantes es consumidor de riesgo y 18% presenta consumo perjudicial o posible dependencia. En estudiantes que consumen alcohol, la variable ingreso familiar, en relación con las variables época del año en que consumen y la presencia de problemas están asociadas. Conclusión: Existe mayor prevalencia de consumo en el género masculino y un alto consumo de bebidas alcohólicas en ambos géneros en cualquier época del año. El consumo de bebidas alcohólicas es independiente del ingreso familiar

    Resumen de la tarea Rest-Mex en IberLEF 2023: Investigaci´on sobre An´alisis de Sentimiento para Textos Tur´ısticos Mexicanos

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    This paper presents the framework and results of the Rest-Mex task at IberLEF 2023, focusing on sentiment analysis and text clustering of tourist texts. The study primarily focuses on texts related to tourist destinations in Mexico, although this edition included data from Cuba and Colombia for the first time. The sentiment analysis task aims to predict the polarity of opinions expressed by tourists, classifying the type of place visited, whether it’s a tourist attraction, hotel, or restaurant, as well as the country it is located in. On the other hand, the text clustering task aims to classify news articles related to tourism in Mexico. For both tasks, corpora were built using Spanish opinions extracted from TripAdvisor and news articles from Mexican media. This article compares and discusses the results obtained by the participants in both sub-tasks. Additionally, a method is proposed to measure the easiness of a multi-class text classification corpus, along with an approach for system selection in a possible late fusion scheme.Este artículo presenta el marco y los resultados de la tarea Rest-Mex en IberLEF 2023, que se enfoca en el análisis de sentimiento y agrupamiento de textos turísticos. El estudio se centra principalmente en textos relacionados con destinos turísticos en México, aunque esta edición incluyó datos de Cuba y Colombia por primera vez. La tarea de análisis de sentimiento tiene como objetivo predecir la polaridad de opiniones expresadas por turistas, clasificando el tipo de lugar visitado, ya sea un atractivo turístico, un hotel o un restaurante, así como el país en el que se encuentra. Por otro lado, la tarea de agrupamiento de textos busca clasificar noticias relacionadas con el turismo en México. Para ambas tareas, se construyeron corpus utilizando opiniones en español extraídas de TripAdvisor y noticias de medios mexicanos. En este artículo, se comparan y discuten los resultados obtenidos por los participantes en ambas sub tareas. Además, se propone un método para medir la facilidad de un corpus de clasificación textual multi-clase, así como un enfoque para la selección de sistemas en un posible esquema de fusión tardía.The authors thank the Mexican Academy of Tourism Research (AMIT) for their support of the project ”Creation of a labeled database related to tourist destinations for training artificial intelligence models for classifying relevant topics” through the call ”I Research Projects 2022”, which originated this work

    Characterization of child abuse in dysfunctional families of "Ana Betancourt" Polyclinic. January - June, 2017

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    Introduction:  All types of child abuse make an impact on the child, the family, and the society; and this situation becomes more serious in younger infants. Objective: To characterize child abuse in dysfunctional families of Ana Betancourt" Polyclinic. Material and Methods: A descriptive cross-sectional study was conducted from January to June 2017.  The universe was composed of 42 families.  A questionnaire was applied to 24 families who were chosen by selection criteria; the answers were selected by the parents´ consensus. Results:  In a 54,1% of families, the parents demonstrated an excessive authority during the education of their children.  Physical abuse was found in 75 % of the families, and occurred in six or more occasions in its totality during the last year. In 61,1% of the families, the mother was the one who caused it, in more than half of the occasions.  In 44,4% of the families, the parent who caused physical damage was under the effects of alcohol.  Psychological abuse was confirmed in 25 % of the families, since in 16,6 % of the cases, the parents reported that, almost always, they had used offensive phrases; and in 8,3 % they reported that, almost always, they had criticized or shamed their sons or daughters in front of other persons. Conclusions: Child abuse was detected in all the evaluated families. Physical abuse predominated.  Authoritarian styles predominated in the parent-child relationship.  Children are mentally damaged as a consequence of abuse.Keywords: child abuse, dysfunctional families, physical damage, psychological abuse.</p

    Aplicaciones móviles para gestión de procesos académicos en educación superior (AMAES)

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    Mobile Applications, have become an ideal scenario to academic focused. The aim is to characterize app models in 607 college identify patterns of quantity and functionality. The analysis plan is based on a mixed methodology, with a documentary research, a descriptive analysis, proportion validation and dependency variables. Of 151 apps, Colombia owns 35% of them rather than Spain, Mexico and Argentina. The apps with academic history, subjects, class schedules and notifications will be highly valued by their users

    A Multiple-Choice Maze-like Spatial Navigation Task for Humans Implemented in a Real-Space, Multipurpose Circular Arena

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    Spatial navigation is a key aspect of human behavior and it is still not completely understood. A number of experimental approaches exist, although most of the published data in the last decades have relied on virtual maze on-screen simulation or not-completely freely moving 3D devices. Some interesting recent developments, such as circular mazes, have contributed to analyze critical aspects of freely moving human spatial navigation in real space, although dedicated protocols only allow for simple approaches. Here, we have developed both specifically designed and home-assembled hardware equipment, and a customized protocol for spatial navigation evaluation in freely moving humans in a real space circular arena. The spatial navigation protocol poses an imitation of a real-space multiple-choice path maze with cul-de-sac and instances of non-linear movement. We have compared the results of this system to those of a number of validated, both virtual and real, spatial navigation tests in a group of participants. The system composed by hardware, the test protocol, and dedicated measure analysis designed in our laboratory allows us to evaluate human spatial navigation in a complex maze with a small and portable structure, yielding a highly flexible, adaptable, and versatile access to information about the subjects’ spatial navigation abilities

    Enhancing the First-Pass Effect in Acute Stroke: The Impact of Stent Retriever Characteristics

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    Introduction: Although stentrievers (SRs) have been a mainstay of mechanical thrombectomy (MT), and current guidelines recommend the use of SRs in the treatment of large vessel occlusion stroke (LVO), there is a paucity of studies in the literature comparing SRs directly against each other in terms of mechanical and functional properties. Timely access to endovascular therapy and the ability to restore intracranial flow in a safe, efficient, and efficacious manner have been critical to the success of MT. This study aimed to investigate the impact of contemporary SR characteristics, including model, brand, size, and length, on the first-pass effect (FPE) in patients with acute ischemic stroke. Methods: Consecutive patients with M1 occlusion treated with a single SR+BGC were recruited from the ROSSETTI registry. The primary outcome was the FPE that was defined as modified (mFPE) or true (tFPE) for the achievement of modified thrombolysis in cerebral infarction (mTICI) grades 2b-3 or 3 after a single device pass, respectively. We compared patients who achieved mFPE with those who achieved tFPE according to SR characteristics. Results: We included 610 patients (52.3% female and 47.7% male, mean age 75.1 +/- 13.62 years). mFPE was achieved in 357 patients (58.5%), whereas tFPE was achieved in 264 (43.3%). There was no significant association between SR characteristics and mFPE or tFPE. Specifically, the SR size did not show a statistically significant relationship with improvement in FPE. Similarly, the length of the SR did not yield significant differences in the mFPE and tFPE, even when the data were grouped. Conclusions: Our data indicate that contemporary SR-mediated thrombectomy characteristics, including model, brand, size, and length, do not significantly affect the FPE

    Microbiology and Nitrogen Cycle in the Benthic Sediments of a Glacial Oligotrophic Deep Andean Lake as Analog of Ancient Martian Lake-Beds

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    Potential benthic habitats of early Mars lakes, probably oligotrophic, could range from hydrothermal to cold sediments. Dynamic processes in the water column (such as turbidity or UV penetration) as well as in the benthic bed (temperature gradients, turbation, or sedimentation rate) contribute to supply nutrients to a potential microbial ecosystem. High altitude, oligotrophic, and deep Andean lakes with active deglaciation processes and recent or past volcanic activity are natural models to assess the feasibility of life in other planetary lake/ocean environments and to develop technology for their exploration. We sampled the benthic sediments (down to 269 m depth) of the oligotrophic lake Laguna Negra (Central Andes, Chile) to investigate its ecosystem through geochemical, biomarker profiling, and molecular ecology studies. The chemistry of the benthic water was similar to the rest of the water column, except for variable amounts of ammonium (up to 2.8 ppm) and nitrate (up to 0.13 ppm). A life detector chip with a 300-antibody microarray revealed the presence of biomass in the form of exopolysaccharides and other microbial markers associated to several phylogenetic groups and potential microaerobic and anaerobic metabolisms such as nitrate reduction. DNA analyses showed that 27% of the Archaea sequences corresponded to a group of ammonia-oxidizing archaea (AOA) similar (97%) to Nitrosopumilus spp. and Nitrosoarchaeum spp. (Thaumarchaeota), and 4% of Bacteria sequences to nitrite-oxidizing bacteria from the Nitrospira genus, suggesting a coupling between ammonia and nitrite oxidation. Mesocosm experiments with the specific AOA inhibitor 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (PTIO) demonstrated an AOA-associated ammonia oxidation activity with the simultaneous accumulation of nitrate and sulfate. The results showed a rich benthic microbial community dominated by microaerobic and anaerobic metabolisms thriving under aphotic, low temperature (4°C), and relatively high pressure, that might be a suitable terrestrial analog of other planetary settings
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