Repositorio Institucional UNAD: Recent submissions
Now showing items 8721-8740 of 64855
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Statistical determination of extremophile extraterrestrial life based on Drake-Maccone equation
(Sello Editorial UNAD, 2020-12-28)Drake's equation establishes the probability of finding extraterrestrial intelligent life in the universe. In addition to other factors considers those variables that rocky bodies such as planets, satellites, comets, among others, must have to host life based on how it developed on the earth. In this paper, an alternative solution to the Drake equation is presented to statistically determine the probability of finding ... -
Extraction and characterization of pectin from residues of pineapple shells (ananas comosus) by the acid hydrolysis method
(Sello Editorial UNAD, 2020-12-14)The work was carried out by taking samples of pineapple peel from the Las Mercedes sector in the road corridor between Villavicencio and Acacias in the department of Meta, where a total of 9 mobile sales points were found, the general strain on average 14.11 Kg of peel / day An experimental design 22 was used for the pectin extraction process with the combination of temperature and time variables, where it was found ... -
Data mining for the prediction of student dropout at the National Open and Distance University
(Sello Editorial UNAD, 2020-12-14)This document aims to disseminate a research proposal within the framework of the master's degree in IT management at Universidad Nacional Abierta y a Distancia. The document presents an approach expressing the opportunity to apply data analytics techniques to student information that is collected from UNAD's academic processes. Which, are able to analyze using data mining techniques to generate a model of predicting ... -
Design and implementation of a thermopar spider system for the control of ambient temperature fluctuations in the extender area of the company vidrio andino
(Sello Editorial UNAD, 2020-12-14)This document presents a prototype of a multipoint thermocouple with control of ambient temperature fluctuations within the Andino glass factory. This prototype, according to its appearance, was named “Spider Thermocouple” and has a wide measurement range between –200 ° C to 3000 ° C, which is used to characterize the temperature inside the company facilities. The proposed methodology is focused on the design and ... -
132 / 5000 Resultados de traducción Obtaining paper from the peel of the passion fruit (passiflora edulis) and the evaluation of some physical and chemical properties
(Sello Editorial UNAD, 2020-12-14)Paper production is mainly supported by wood due to its high cellulose content. However, alternative sources are currently being sought to discourage the use of this resource, favoring the protection of resources. The paper consists of a fiber-air gel, obtained from vegetable raw materials that have a considerable amount of cellulose (more than 40% by weight on a dry basis). The main solid constituent of paper is ... -
Design of a personal identification prototype using RFID proximity smart cards at CEAD Acacias.
(Sello Editorial UNAD, 2020-12-14)At CEAD Acacias, the entry of personnel is done through manual forms by the guards on duty. It is important to systematize and monitor through an application the entry of personnel to the CEAD facilities (offices, auditorium, modules and laboratories among others). The prototype has the classification of roles of the personnel who request access to any area within CEAD, which can be administrative, teaching, students, ... -
Review of yellow corn transportation alternatives to the Avidesa Macpollo S.A plant, Barranquilla-Girón. Colombia.
(Sello Editorial UNAD, 2021-01-27)Formulating a logistic model of transport is of vital importance for companies in order to guarantee the supply of raw materials and the distribution of their products, generating value and making their productive processes more competitive. Taking into account this principle, the objective of this research work was to propose the cost-efficient viability of road transport vs. the Multimodal River-Road, for yellow corn, ... -
Implementation of the friction stir processing (FSP) for the modification and reinforcement of aluminum alloys and its effect on the mechanical properties.
(Sello Editorial UNAD, 2021-01-27)The friction stir processing (FSP) technique can modify the microstructure of metallic materials or form a composite material, generating a grain refinement in the material; modifying it and closing porosities from previous processes, producing new crystallographic textures, altering the mechanical properties of the compound or alloy in the processed zone. In the present work , based on the works of different authors, ... -
Implementation of an aquaponic model for control and monitoring using ICT and IOT tools in a modular farm in Villavicencio
(Sello Editorial UNAD, 2020-12-14)The meta region is characterized by having extensive crops of oil palm, dry rice, corn, soybeans, bananas and export-type products are also grown such as ornamental fish, insecticides, herbicides, reptile skins, leather products, furniture. In Meta, large companies such as palmeras del llano, multi-palma, palmar de san juan, among others, are the ones that make their processes more technologically advanced in order to ... -
Preliminary results of a labor productivity problem in the quotation department of a small growing co-packing company
(Sello Editorial UNAD, 2020-08-19)Resumen: Colombia, al igual que otros países latinoamericanos, es un país de pequeñas y medianas empresas (PYMES), donde el uso de mano de obra operativa (no calificada) es intensivo, bajo una configuración de células y/o líneas de proceso para la manufactura o la prestación de servicios de diversa índole. Este artículo se basa en una revisión del caso de una empresa que se destaca en el mercado como proveedora de ... -
Industrial design taught in virtual mode, a strategy to democratize innovation
(Sello Editorial UNAD, 2020-12-14)The world identifies innovation and entrepreneurship as mechanisms to improve both the quality of life of the population and the growth of the economy, but in practice in countries such as Colombia relatively few ventures go beyond the first year and few organizations contemplate among their strategic guidelines to have sustainable innovation structures. Among the functions of the State is to promote the generation of ... -
Importance of Remote and Virtual Labs in Higher Education
(Sello Editorial UNAD, 2020-08-19)Remote and virtual laboratories, in the fields of: science, engineering and technology, arose as a complement to the teaching of hands-on laboratories and are mainly strengthened in higher education centers. The evolution in this type of teaching is mainly due to the advancement of information technologies; and currently it has become relevant in times of pandemic of COVID-19 as a fundamental tool in education. Virtual ... -
Teaching Mathematics in the Engineers Training under the Context of Industrial Revolution 4.0
(Sello Editorial UNAD, 2020-08-19)There are many reflections on teaching and mathematics learning that analysed perspectives from the teaching role, student, curriculum, context, method, among others. In this article, a reflection is presented from the teaching view, in which it is intended to remember the mathematical knowledge for teaching - MKT, which in this new era must be re-designed. In the current context of Industry 4.0 it is necessary to ... -
Procedure for Sizing of Offgrid Photovoltaic Energy Systems
(Sello Editorial UNAD, 2020-08-19)By Knowing the negative effects on environment, produced by Solar Off Grid Systems, acoording to use of batteries, it is shown a basic process for the design of photovoltaic devices, for the purpose of that systems are becoming more and more accurate and to limit the use of batteries. The process was made from seven steps, which began with the charge characterization, solar radiation estimation in a specific geographic ... -
Modelo de Gestión para proyectos edilicios MIPYME
(Sello Editorial UNAD, 2020-08-19)En este trabajo se presenta la aproximación propuesta a un Modelo de Gestión enfocado en el sector de la construcción, más concretamente en el sector de los proyectos edilicios en MIPYME. Esta propuesta busca dar solución a la problemática encontrada en el sector en cuestión, que responde principalmente a la informalidad en el desarrollo de proyectos edilicios, en relación con la deficiente gestión que afecta el control ... -
Data mining on predicting student dropout at Universidad Nacional Abierta Y A Distancia
(Sello Editorial UNAD, 2021-01-27)This document aims to disseminate a research proposal within the framework of the master's degree in IT management at Universidad Nacional Abierta y a Distancia. The document presents an approach expressing the opportunity to apply data analytics techniques to student information that is collected from UNAD's academic processes. Which, are able to analyze using data mining techniques to generate a model of predicting ... -
Incidencia de las Políticas Públicas e Instrumentos de Planificación sobre la Gestión del Espacio Público, bajo Lineamientos de la Metodología General Ajustada: Caso en la Zona Centro del Municipio de Tuluá, Valle del Cauca
(Sello Editorial UNAD, 2020-08-19)El propósito del estudio se enfocó en identificar, analizar y determinar la incidencia de las políticas públicas e instrumentos de planificación sobre la gestión del espacio público, con el fin de entregar a la Administración Pública local una forma de atacar la problemática social diagnosticada en la zona centro del Municipio de Tuluá, Valle del Cauca. El estudio se desarrolló a partir resultados obtenidos de un ... -
Evaluación Ex post implementación del Programa Conexiones Intradomiciliarias en el municipio de Aracataca, Magdalena
(Sello Editorial UNAD, 2020-08-19)Este documento tiene como propósito, realizar una evaluación ex post a la implementación del Programa de Conexiones Intradomiciliarias, liderado por el Ministerio de Vivienda, Ciudad y Territorio (MVCT), la investigación describe los aspectos relevantes de la implementación del Programa para la población beneficiaria en el municipio de Aracataca, Magdalena (Colombia), se aplican las fases para realizar una evaluación ... -
Procedure for sizing of offgrid photovoltaic energy systems
(Sello Editorial UNAD, 2021-01-27)By Knowing the negative effects on environment, produced by Solar Off Grid Systems, acoording to use of batteries, it is shown a basic process for the design of photovoltaic devices, for the purpose of that systems are becoming more and more accurate and to limit the use of batteries. The process was made from seven steps, which began with the charge characterization, solar radiation estimation in a specific geographic ... -
Modelo de Gestión Documental Electrónica de Archivos basado en metodología BPM para el mejoramiento de los procesos administrativos
(Sello Editorial UNAD, 2020-08-19)Resumen- En el presente artículo se expondrán los resultados del proyecto de investigación Modelo de Gestión Documental Electrónica de Archivos basado en metodología BPM para el mejoramiento de los procesos administrativos, el enfoque de la investigación es la aplicación de cuatro fases: realizar diagnóstico a través de la recolección de información sobre la gestión documental electrónica, la fase de ...
