Proyecto de detección de patrones de participación empleando minería de datos en el entorno virtual de aplicaciones web de la ESPOCH, para predecir estudiantes exitosos

Esta investigación define un modelo de predicción basado en el algoritmo de Minería de Datos Perceptron Multica, fue seleccionado mediante la curva ROC; de esta manera se utiliza datos históricos del Entorno Virtual de Aprendizaje (EVA) de la materia de Aplicaciones Web de noveno semestre de la Escuela de Ingeniería en Sistemas. Se aplicó en la obtención de las fuentes de datos, pre procesamiento de datos, extracción y limpieza, creación del modelo, interpretación de resultados. Se utilizó los datos fuentes Las fuentes de la Plataforma Virtual MOODLE de la ESPOCH y el Sistema Académico; de la misma forma el pre-procesamiento se realizó en el motor PostgreSQL, se crearon dos Data Mart; utilizando un modelo dimensional relacional tipo estrella, donde se crearon las tablas de dimensiones y hechos con sus respectivas medidas, el resultado del análisis es la información contenida en la tabla de hechos, sometido al weka y R para identificar los patrones y su posterior predicción. Los datos de Didáctica informática la Escuela de Ingeniería en Sistemas del actual semestre, fue sometido al modelo de predicción para evaluar el modelo. El algoritmo proporciona es de 90% de certeza, con esta predicción se aceptó la hipótesis nula.This research defines a prediction model based on the algorithm for, data mining Multilayer Perceptron was selected by the ROC curve; in this way it is used, historical data of Virtual Learning Environment (VLE) of the subject matter: Web Application in ninth semester at the school of Virtual Platform MOODLE of ESPOCH and the Academic System; in the same way the pre-processing was performed in the PostgreSQL engine two Data Mart were created; using a start-relational dimensional model, where the dimension tables and made with their respective measures were created, the result of the analysis is the information contained in the fact table, submitted to weka and R to identify patterns and its subsequent prediction. Teaching computer data School of Systems Engineering of the current semester, it was submitted to the prediction model to evaluate the model. The algorithm provides of 90% certainty, with this prediction the null hypothesis was accepted

Unravelling the mystery of 'Madagascar copal': Age, origin and preservation of a Recent resin

The loss of biodiversity during the Anthropocene is a constant topic of discussion, especially in the top biodiversity hotspots, such as Madagascar. In this regard, the study of preserved organisms through time, like those included in 'Madagascar copal', is of relevance. 'Madagascar copal' originated from the leguminous tree Hymenaea verrucosa, which produced and produces resin abundantly. In the last 20 years, interest has focused on the scientific study of its biological inclusions, mainly arthropods, described in dozens of publications. The age and origin of the deposits of 'Madagascar copal' have not yet been resolved. Our objectives are to determine its age and geographical origin, and thus increase its scientific value as a source of biological/palaeobiological information. Although Hymenaea was established in Madagascar during the Miocene, we did not find geological deposits of copal or amber in the island. It is plausible that the evolution of those deposits was negatively conditioned by the type of soil, by the climate, and by the development of soil/litter microorganisms, which inhibit preservation of the resin pieces in the litter and subsoil over 300 years. Our results indicate that 'Madagascar copal' is a Recent resin, up to a few hundred years old, that originated from Hymenaea trees growing in the lowland coastal forests, one of the most endangered ecosystems in the world. The included and preserved biota is representative of that ecosystem today and during historical times. Inclusions in this Recent resin do not have the palaeontological significance that has been mistakenly attributed to them, but they do have relevant implications for studies regarding Anthropocene biodiversity loss in this hottest hotspot

A revised definition for copal and its significance for palaeontological and Anthropocene biodiversity‑loss studies

The early fossilization steps of natural resins and associated terminology are a subject of constant debate. Copal and resin are archives of palaeontological and historical information, and their study is critical to the discovery of new and/or recently extinct species and to trace changes in forests during the Holocene. For such studies, a clear, suitable definition for copal is vital and is herein established. We propose an age range for copal (2.58 Ma¿1760 AD), including Pleistocene and Holocene copals, and the novel term 'Defaunation resin', defined as resin produced after the commencement of the Industrial Revolution. Defaunation resin is differentiated from Holocene copal as it was produced during a period of intense human transformative activities. Additionally, the 'Latest Amber Bioinclusions Gap' (LABG) since the late Miocene to the end of the Pleistocene is hereby newly defined, and is characterized by its virtual absence of bioinclusions and the consequent lack of palaeontological information, which in part explains the historical differentiation between amber and copal. Crucial time intervals in the study of resin production, and of the biodiversity that could be contained, are now clarified, providing a framework for and focusing future research on bioinclusions preserved in copal and resin

NaroNet: Discovery of tumor microenvironment elements from highly multiplexed images

Many efforts have been made to discover tumor-specific microenvironment elements (TMEs) from immunostained tissue sections. However, the identification of yet unknown but relevant TMEs from multiplex immunostained tissues remains a challenge, due to the number of markers involved (tens) and the complexity of their spatial interactions. We present NaroNet, which uses machine learning to identify and annotate known as well as novel TMEs from self-supervised embeddings of cells, organized at different levels (local cell phenotypes and cellular neighborhoods). Then it uses the abundance of TMEs to classify patients based on biological or clinical features. We validate NaroNet using synthetic patient cohorts with adjustable incidence of different TMEs and two cancer patient datasets. In both synthetic and real datasets, NaroNet unsupervisedly identifies novel TMEs, relevant for the user-defined classification task. As NaroNet requires only patient-level information, it renders state-of-the-art computational methods accessible to a broad audience, accelerating the discovery of biomarker signatures.Comment: 37 pages, 4 figure

Frecuencia de las principáles complicaciones mecánicas del cateterismo venoso central y variables asociadas a su presentación en los servicios de terapia intensiva y emergencia del Hospital Carlos Andrade Marín durante el período de mayo a septiembre del 2013

Antecedentes: El cateterismo venoso central desde su aparecimiento en 1952 como técnica de intervención en pacientes cítricos nos ha permitido manejar patologías y estados emergentes, cuya resolución representa el aumento de la supervivencia de pacientes. Al ser un procedimiento invasivo y no estar exento de complicaciones; su abordaje multidisciplinario ha demostrado una optimización de recursos y una mayor eficacia pues se reduce la frecuencia, severidad y tipo de complicaciones derivadas del mismo. Es decir al conocer las variables que pueden condicionar la presentación de complicaciones mecánicas, aquellas que dependen del operador, del paciente o de la circunstancia bajo la cual se canaliza la vía, podríamos estimar la probabilidad de que en un paciente se produzca, una complicación y de esta manera intentar atenuar las variables que pudiesen condicionar el éxito de confección de un acceso venoso.Objetivo: Determinar la frecuencia de las complicaciones mecánicas del cateterismo venoso central y las variables directamente asociadas a su presentación en los servicios de Terapia Intensiva y Emergencia del hospital Carlos Andrade Marín en el periodo de Mayo a septiembre del 2013.Pacientes y Métodos: Se realizó un estudio transversal retrospectivo, observacional y descriptivo de 196 pacientes sometidos a cateterismo venoso central en los Servicio de Terapia Intensiva y Emergencias. De la revisión exhaustiva de historias clínicas de pacientes escogidos aleatoriamente requerida para la investigación, 191 cumplieron los criterios de inclusión con los que se realizaron tablas separando las variables numéricas y cualitativas de interés. Sus datos fueron analizados mediante el programa SPSS manufacturado por IBM. Resultados: No se encontró diferencia estadísticamente significativa entre el sitio de punción y la presencia de complicación mecánica. De las que el 55,6% las presentaron los pacientes con punción yugular, el 46,8% en punción subclavia y ninguna con punción femoral

A new fossil inchworm moth discovered in Miocene Dominican amber (Lepidoptera : Geometridae)

Unidad de excelencia María de Maeztu CEX2019-000940-MWe report a fossil geometrid moth, a male, virtually complete, preserved in a clear piece of Miocene Dominican amber dating from 19 to 16 Mya. Fore- and hindwings appear partially overlapped, and all body characters are visible externally in dorsal and ventral views, including the outer surface of the valvae of the genitalia. The scale pattern on the wing membrane is preserved, whereas the wing color pattern is not. It belongs to the genus Dolichoneura (Geometridae: Desmobathrinae) and is named Dolichoneura jorelisae Sarto i Monteys, Hausmann, Baixeras and Peñalver sp. n., based on wing features. Because of the poor fossil record of lepidopterans, both in amber and compression rocks, the description of the available well-preserved specimens is of considerable interest for phylogenetic studies. Furthermore, it could also serve for calibrating molecular clocks and for paleobiogeographic inferences

Aplicación móvil de venta y entrega de productos del Supermarket Supercito de la ciudad de Calceta, Ecuador

El presente trabajo tuvo como objetivo desarrollar una aplicación móvil de comercio electrónico y entregas de productos a los clientes del Supermarket Supercito de la ciudad de Calceta, con la finalidad de brindar a los usuarios otra alternativa de compra. La app cuenta con el módulo de compra, reservación y entrega de pedidos, así como también, una sección donde se puede localizar la ubicación y el estado del pedido; el pago se podrá realizar en dos opciones: por medio de transferencias bancarias y pago en efectivo. En la metodología se empleó eXtreme Programming (XP), siendo un marco de trabajo en equipo ágil y flexible que consta con cuatro fases (planificación, diseño, codificación, prueba): En la primera fase se ejecutó una entrevista al administrador de la empresa, permitiendo así, el levantamiento de información, cuyos datos determinaron los requerimientos y funcionalidades en el desarrollo de la aplicación. En la segunda fase se realizó el esquema de la base de datos y arquitectura del software. En la tercera fase se desarrolló la codificación de cada uno de los módulos que tiene el aplicativo. Finalmente, se aplicaron los tests de integración en equipos reales para la comprobación del desempeño y rendimiento de la aplicación en escenarios reales. Obteniendo como resultado una aplicación móvil que brinda servicios en ventas y entrega de productos a domicilio, llegando a la conclusión que su uso en el Supermarket tendrá impactos positivos en las ofertas y ventas de productos.PALABRAS CLAVE: Sistema de gestión, servicios, empresa, aplicación informática.MOBILE APP FOR SALE AND DELIVERY OF PRODUCTS FROM THE SUPERMARKET SUPERCITO OF THE CITY OF CALCETA, ECUADOR ABSTRACTThe objective of this work was to develop a mobile application for electronic commerce and product deliveries to customers of the Supermarket Supercito in the city of Calceta, in order to provide users with another purchase alternative. The app has a purchase, reservation and order delivery module, as well as a section where you can locate the location and status of the order; payment can be made in two options: by bank transfer and cash payment. In the methodology eXtreme Programming (XP) was used, being an agile and flexible teamwork framework that consists of four phases (planning, design, coding, testing): In the first phase, an interview was carried out with the company administrator, thus allowing the gathering of information, whose data determined the requirements and functionalities in the development of the application. In the second phase, the database schema and software architecture were carried out. In the third phase, the coding of each of the modules that the application has was developed. Finally, the integration tests were applied in real equipment to verify the performance and performance of the application in real scenarios. Obtaining as a result a mobile application that provides services in sales and delivery of products at home, reaching the conclusion that its use in the Supermarket will have positive impacts on offers and sales of products.KEYWORDS: Management system, services, company, computer application