275 research outputs found
Recovery of scientific data using Intelligent Distributed Data Warehouse
No full textA Retrieval System requires several components that define its functionality and behavior. In the case of a meta-search engine
for the retrieval of scientific data, a schema that defines the way to store such data is considered a necessary element for its
evolution. Unified profiles have been developed for the data storage of the entities involved in the scientific data management,
generated from the fact of publishing a scientific paper. Such profiles are considered the beginning of the generation of new
components for the meta-search engine that, using the proprietary information, can deliver information relevant for the user of
the tool. To this end, the use of an intelligent distributed data warehouse is proposed.Viloria, Amelec-52922525-9094-40f2-acd3-5424e90bb258-0Neira Rodado, Dionicio-0000-0003-0837-7083-0Pineda Lezama, Omar Bonerge-365a03a0-145e-4df5-9abe-f5ccf9d96612-
Estado del arte para un sistema de información para la valoración estratégica y financiera de las empresas que desean cooperar en un clúster, basada en el valor de shapley
No full textBahinipati et al. (2009) [16] proponen un plan de reparto de ingresos y
participantes de coaliciones en el mercado eléctrico de la Industria de
semiconductores. Como resultado de la investigación se concluyó que el beneficio
total derivado del mecanismo desarrollado, incrementaba con el número de
eslabones de la Cadena de Suministro.
Ahmadi y Hoseinpour (2011) [17] estudian la coordinación de decisiones de
publicidad en conjunto de una cadena de suministro conformada por Fabricante y
Minorista, utilizando distintos modelos propios de la Teoría de juegos y analizando
las posibles acciones de cada jugador dado ciertos escenarios.Castro, Lauren-will be generated-orcid-0000-0001-5201-5659-600Ramirez-Polo, Luis Eduardo-will be generated-orcid-0000-0002-1274-6593-600Neira Rodado, Dionicio-will be generated-orcid-0000-0003-0837-7083-60
On the Phonological Conditioning of Clitic Placement in Zapotec
No full textClitic placement in San Dionicio Ocotepec Zapotec is determined by a combination of syntactic and phonological factors. The most important of these is alignment with the edge of a phonological phrase. In an optimality-theoretic account, it is possible to rank some phonological alignment constraints above syntactic alignment constraints in a way that correctly accounts for the data. Alternatives which seek to derive clitic placement through syntactic movement operations face insuperable problems with the range of positions in which these clitics appear
Multicriteria strategic approach for the selection of concrete suppliers in a construction company in Colombia
No full textWithin companies of the construction sector, the evaluation and selection of concrete suppliers, is considered a fundamental topic for the adequate construction of buildings, due to the impact it has, not only in the stability of the building but also in the productivity and the profitability. For an adequate selection, decision-makers must consider a series of criteria of different kind. However, as in different fields, due to the numerous criteria and alternatives that should be considered in the construction industry, the choice of an appropriate multicriteria decision-making approach has become a critical step in the selection of suppliers. Therefore, the objective of this research is to define the most adequate supplier of suitable concrete through the integration of powerful multicriteria decision-making methods. For this purpose, a fuzzy analytical hierarchy process (FAHP) is initially applied to define initial factor weights under uncertainty, followed, using the decision-making test and the evaluation laboratory (DEMATEL) to evaluate the interrelationships between elements of the hierarchy. Then, after combining FAHP and DEMATEL to calculate the final contributions of the factors including the interdependence, finally TOPSIS technique is used for the order of preference for the similarity with the ideal solution to evaluate and determine the best supplier.Restrepo, Jorge E.Neira Rodado, Dionicio-will be generated-orcid-0000-0003-0837-7083-600amelec, viloria-will be generated-orcid-0000-0003-2673-6350-
Determination of the most relevant features to improve the performance of RF classifier in human activity recognition
No full textThe impact that neurodegenerative diseases have in our society, have made human activity recognition (HAR) arise as a relevant field of study. The quality of life of people with such conditions, can be significantly improved with the outcomes of the projects within this area. The application of machine learning techniques on data from low level sensors such as accelerometers is the base of HAR. To improve the performance of these classifiers, it is necessary to carry out an adequate training process. To improve the training process, an analysis of the different features used in literature to tackle these problems was performed on datasets constructed with students performing 18 different activities of daily living. The outcome of the process shows that an adequate selection of features improves the performance of Random Forest from 94.6% to 97.2%. It was also found that 78 features explain 80% of the variability.Jiménez-Gómez, GeovannaNavarro-Escorcia, DanielaNeira Rodado, Dionicio-will be generated-orcid-0000-0003-0837-7083-600Cleland, Ian-will be generated-orcid-0000-0003-2368-7354-60
Construcción de prototipo de aerogenerador savonius a nivel de banco para optimizar captación de energía eólica
No full textObjetivos: Optimizar la captación de energía eólica de la turbina de un aerogenerador tipo SAVONIUS, determinar la Capacidad de Potencia (Cp) del prototipo, hallar el incremento de la eficiencia (%), proyectar la generación eléctrica y el ahorro de CO2 escalando el modelo más eficiente. Materiales y métodos: Se diseñó en gabinete, se fabricó en el taller de la empresa PROMAQ TRADE S.A.C., se ensambló y evaluó en el Laboratorio de Física N°1 de la Facultad de Ciencias en la Universidad Nacional José Faustino Sánchez Carrión – Huacho y se proyectó la aplicación en gabinete (simulación matemática) – de la Zona sur de Huacho-Huaura-Lima Provincias, coordenadas 227085 E, 8751618 S, ZONA 18 S. El diseño de la tesis está basado en CONSTRUCCION Y EVALUACIÓN DE UN AEROGENERADOR DE EJE VERTICAL TIPO SAVONIUS (Fiestas Urbina, C. J.; Lizárraga Zavaleta, B. B.; Nunja García, J. V.; Quispé Ojeda, C.; Rojas Paz, J., 2016). Se construyó dos turbinas: la primera tipo SAVONIUS (clásico) de dos etapas en el mismo eje de giro, 0.2 metros de diámetro, 0.15 metros de altura (cada etapa) y 0.065 metros de traslape y la segunda un prototipo de aerogenerador tipo SAVONIUS modificado de una etapa, 4 álabes, 0.24 metros de diámetro, 0.18 metros de altura y separación ente álabes de 0.07 metros en la línea de eje. Se evaluó con vientos constantes de 2.9, 3.9 y 4.8 m/s. Se escaló el Prototipo x10, configurándolo con dos etapas por aerogenerador en un parque eólico de 10 aerogeneradores, se proyectó la generación eléctrica y el ahorro de CO2. Resultados: El Prototipo-C tiene una capacidad de potencia (Cp) de 0.43, el rango de velocidad de viento es de 2.5 m/s en adelante y es un 159% más eficiente que la turbina tipo SAVONIUS clásico. Se proyecta una generación de 91.84 MW- año y un ahorro de 254 689 TM/CO2-añ
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No full textREAL FABRICA DE TABACOS Y CIGARROS. FLOR DE TABACOS DE PARTGAS Y CA. INSDUSTRIA N.-152,158,160 LOS PRONOSTICOS DEL CONOCIDO ABATE DOCTOR RODOLFO FAB, TIENE A GUAYAQUIL EN COMPLETA ALARMA. LLEGADA DEL LAUTARO. INUNDACIONES. EL VAPOR LAUTARES DE LA CEREMONIA SUD AMERICANA FONDEO AYER TARDE EN EL VECINO PUERTO DE CALLAO. SANTORAL. MAÑANA MIERCOLES 8 SAN GENARO MARTIR, SAN DIONICIO OBISPO Y CONFESOR Y SAN ALBERTO MAGNO
Post Office and Federal Building, San Antonio, Texas
No full textPhotograph shows looking north from park on Alamo Plaza towards new Post Office and Federal Building.Published in San Antonio Express on September 10, 1937. Caption reads: "Its classic Spanish lines framed in a matching setting of palms, San Antonio's new post office and Federal building stands complete outside and virtually so within, lending a new vista to Alamo Plaza as the date nears for its formal opening by Postmaster Dan J. Quill. The view is from the bandstand on the plaza, with the stone seat (made by Dionicio Rodriquez) in the foreground.--(Photo by Summerville.
Weather variability control in three Colombian airports
No full textThe aeronautic sector has been economically affected by the closure of its operations with the appearance of the Covid-19. For reducing the impact of weather variables at airport operations, we present a predictive model for better planning. Better planning reduces operative costs and increase the level of client satisfaction. This paper uses hourly observation from 2011 to 2018 at three Colombian airports: The Dorado airport in Bogota, the Olaya Herrera airport in Medellin, and the Matecana airport in Pereira. We build prediction models with deep learning and machine learning methods. These models aim to forecast horizontal and vertical visibility variables with minimum errors. The Random Forest decision tree model performs better predicting theses variables in one, six, and twenty-four hours. This model has better results with the horizontal variable visibility forecasting for the three airports giving errors among 4% and 8%. This algorithm gave a flexible solution, and any airport can implement it.Vargas-Daza, KarenMisat, Giovanny-will be generated-orcid-0000-0002-7345-157X-600Neira Rodado, Dionicio-will be generated-orcid-0000-0003-0837-7083-60
Design of a decision support system for multiobjective activity planning and programming using global bacteria optimization
No full textThe success of any project lies in a great manner on keeping costs in the estimated values, as well as meeting customer required due date. Therefore, there is a current need of developing an information system that facilitates the creation and managing of projects and their processes, including costing schemes, as well as monitoring an optimizing project’s makespan. In order to address this situation a user-friendly information system (IS) was developed. This IS includes an optimization module that reduces the project’s execution time, thus, minimizing costs and ultimately providing the manager with the right tools for the correct development of the project. Therefore, a better planning of activities in a reduced time is accomplished. In this way, the project manager is equipped with a decision support system (DSS) that allows a better decision making and, thanks to this performance optimization, a cost-effective solution can be delivered to the company. The optimization module is the main innovative component in this IS, considering that addresses the problem as a multiobjective one, considering at the same time makespan and cost. This module is based on global bacteria optimization (GBO). This becomes the most relevant improvement when compared to other ISs in the market.Jimenez Barros, Miguel Angel-will be generated-orcid-0000-0002-8038-7297-600Ramirez Rios, Diana GinethArdila Hernandez, Carlos JulioCastro, Lauren-will be generated-orcid-0000-0001-5201-5659-600Neira Rodado, Dionicio-will be generated-orcid-0000-0003-0837-7083-60
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