Revista Publicaciones e Investigación: Recent submissions

Now showing items 701-720 of 799

    • Potentiality of the use of guadua angustifolia kunth for the reinforcement in cement 

      Sánchez Echeverri, Luz Adriana; Tovar Perilla, Nelson Javier; Ganjian, Eshmaiel (Sello editorial UNAD, 2021-11-20)
      The need for sustainable, environmentally friendly and energy efficient building materials have developed the interest in the investigation of cement composites reinforced with Guadua Angustifolia Kunth fibers. This plant is characterized by its good mechanical properties showing a high resistance to bending and compression, which is why it is known as vegetable steel. Although all Guadua culm is used in different ...

    • IOT applications for the home – IOT aquarium development 

      Balanta, Lucy Amanda; Lemus Horta, Miller Duvan; Huérfano Duarte, Sonia Isabel (Sello editorial UNAD, 2021-11-20)
      The technological trend of the Internet of things is a very important issue in society, day by day it is being combined in consumer products, durable goods, cars and trucks, industrial and utility components, sensors and others. everyday objects with Internet connectivity. Today we can talk about IoT for the home as an ally in the control of elements, such as aquariums or fish tanks for ornamental and life use, which ...

    • Active learning as a teaching-learning process in the general physics course of the UNAD 

      Ramírez Calderón , Yudi Ester; Tique Escobar, Diana Lorena (Sello editorial UNAD, 2021-11-20)
      In the analysis processes that are carried out within the courses of the different programs of the UNAD, the behavior of the students is reviewed on issues related to the passing and dropout rates, seeking to design strategies to reduce the dropout and failure rate, which is highly representative in basic science courses. Among these courses is General Physics, which meets the conditions of analysis, being a large ...

    • Technological surveillance as a mechanism of educational innovation 

      Sánchez, Yarnher Enrique; Sepúlveda López , Jheimer Julián (Sello editorial UNAD, 2021-11-20)
      An institution, organization or company must stay at the forefront of technological advances and innovations to have changes and improvements that lead it to achieve its institutional or organizational objectives, however, although technological surveillance has been around for more than 20 years in the market there are few organizations or institutions that implement it. Therefore, the objective of this article is to ...

    • Dynamic spectrum allocation in new generation wireless networks: an approach to the state of the art 

      Mora Arroyo, Jorge Edison; Parra Mogollón, Héctor Julián (Sello editorial UNAD, 2021-11-20)
      La contradicción entre la prevista escasez del espectro electromagnético disponible, y la subutilización de los canales de frecuencia asignados, requieren un cambio de paradigma del anacrónico modelo de acceso estático; hacia un modelo de acceso al espectro dinámico, flexible y de alta eficiencia. Con base en lo anterior, en este trabajo de investigación se presenta un estudio y análisis detallado de las diferentes ...

    • Environmental alternatives for the use of residual biomass of oil palm (elaeis guineensis) in industrial and agricultural processes 

      Vanegas Escudero, Andrés Leonardo (Sello editorial UNAD, 2019-07-02)
      Colombia is positioned as the first producer of palm oil in Latin America and the fourth worldwide. During the extraction of palm oil, lignocellulosic residual biomass is generated such as empty fruit clusters (RFV), mesocarp fibers, palm shell; In addition, in the event of greenhouse gas (GHG) emissions and effluents with a high organic load (POME); which, by not being adequately processed, treated or disposed of, ...

    • Importance of knowledge management for the creation of value in Cuban companies 

      Vitale Alfonso, Alicia Maria; Fernández Vidal, Eliani; Cabrera Soto, Marian; Fernández Vidal, Eliani; Cabrera Soto, Marian (Sello editorial UNAD, 2020-01-20)
      The knowledge that is found within organizations, in addition to being a resource, is becoming an important strategic asset for them. Knowledge Management is developed within the framework of the so-called "Knowledge Economy", in which academics and entrepreneurs recognize the importance of knowledge to achieve and maintain the competitive advantage of organizations, a fundamental element for their success and ...

    • Alternative tools for the valuation of transactions between related parties 

      Arias Muñoz, Ariel Arturo; Nieto Contreras, Jose María; Guerra Lizcano, Atilano del Jesus; Arias Muñoz, Ariel Arturo; Nieto Contreras, Jose María; Guerra Lizcano, Atilano del Jesus (Sello editorial UNAD, 2021-11-15)
      The objective of this research work is to analyze the advantages of using the information contained in transfer pricing studies for the valuation of goods at customs in operations agreed by entities with common economic interests, known as related parties. The process of estimating the value of goods at customs poses problems for both importers and customs authorities, since establishing a system that is equitable, ...

    • Financial capabilities in micro, small and medium-sized enterprises 

      Hernández Gómez, Norma Angélica; Mapén Franco, Fabiola de Jesús; Barroso Tanoira, Francisco Gerardo; Hernández Gómez, Norma Angélica; Mapén Franco, Fabiola de Jesús; Barroso Tanoira, Francisco Gerardo (Sello editorial UNAD, 2021-11-15)
      Due to the development of markets, economies have ceased to be local in nature where being competitive is a requirement. However, factors such as lack of financing and investment decisions without prior analysis of quality financial information inhibit business competitiveness. This situation prevails in Micro, Small and Medium Enterprises (MSMEs). The highly competitive environment requires companies to establish ...

    • Importance of ICT in the business accounting system 

      Guillén Merlín, Juan Fernando; Tosca Magaña, Sergio Alfonso; Guillén Merlín, Juan Fernando; Tosca Magaña, Sergio Alfonso (Sello editorial UNAD, 2021-11-15)
      This research will serve as a reference to show the importance of ICT in the accounting system that both an accountant and a company can have when using these tools. At present the ICT have played a very important role in the accounting area since thanks to the evolution the accountant has become more feasible his work these print speed in several scenarios such as the accountant, by demanding efficiency and quality ...

    • Behavior of cacao production in Comalcalco, Tabasco during the 2014-2018 period 

      Vázquez Vidal, Verónica; López Rodríguez, William Baldemar; Vázquez Vidal, Verónica; López Rodríguez, William Baldemar (Sello editorial UNAD, 2021-08-19)
      The use of information technology (IT) in today's world makes companies innovate, which is why today is born what is known as electronic invoicing which was implemented by the Ministry of Finance and Public Credit, which came into force in 2004 leaving behind the use of traditional billing to have better control, and likewise with the tax administration service, The electronic invoice helps us as a tool that for purposes ...

    • Conceptualization of electronic commerce 

      Soberano Gutiérrez , Lourdes Cristina; Soberano Gutiérrez , Lourdes Cristina (Sello editorial UNAD, 2021-11-15)
       E-commerce facilitates the ability to acquire a product or services since companies have provided the necessary tools to carry this out, The importance that electronic commerce has acquired today, have been of great help to society due to the impact it has had with the development of new technologies thus creating new tools and opportunities for consumers to acquire products in a safer way and effective, becoming ...

    • Displaced persons and environmental refugees 

      Reyes Torres, Abimael; Lara Andrade, Isis Verónica; Reyes Torres, Abimael; Lara Andrade, Isis Verónica (Sello editorial UNAD, 2021-08-19)
      In a general framework, the displaced and environmental refugees are in a process of continuous growth, the level of application and creation of laws must be accurate, being both internally and internationally referring to the individual part and rights of each human being. There are various factors that participate in this problem or that are affected by the same situation, issues that range from a cultural, ...

    • The legal nature of the amparo trial 

      Tapia Chávez, Christian Miguel; Tapia Chávez, Christian Miguel (Sello editorial UNAD, 2021-08-19)
      The amparo trial is a means of constitutional control and conventionality in the Mexican legal system, in the aspect of indirect amparo trial, it is the means par excellence for the defense of human rights and its guarantees against acts of authority or omissions that it carries out against of the governed. By excellence, it is the means by which a governed that sees their human rights violated or failing that, a legal ...

    • ICT in the electronic accounting of SMES in Mexico 

      López Cáceres, Carlos Arnulfo; López Cáceres, Carlos Arnulfo (Sello editorial UNAD, 2021-11-15)
      The objective of this research is to know how electronic accounting has been developed with SMEs through ICTs; since it is very difficult to adapt to these changes, since many companies are not prepared to change from traditional accounting to electronic accounting and for medium-sized companies to continue growing and developing so that they are within the competitive market and be at the forefront of new technologies. ...

    • Globalization and accounting in organizations 

      Tosca Vidal, Carlos Mauricio; Tosca Vidal, Carlos Mauricio (Sello editorial UNAD, 2021-11-15)
      At present, accounting is the language of business in the global environment, it is related to the way it has evolved both in the way of being business and in generating financial information through accounting. The purpose of this article is to analyze globalization as the fundamental factor in the issuance of Financial Reporting Standards.

    • Evaluación de la capacidad de bioadsorción de plomo (ii) presente en afluentes sintéticos, utilizando bioadsorventes de origen vegetal 

      Hernández Gómez, Rosa Catalina; Garzón Gutiérrez, Jennyfer; La Rotta La Rotta, Maritza; Guerra Rodríguez, Jayerth; Hernández Gómez, Rosa Catalina; Garzón Gutiérrez, Jennyfer; La Rotta La Rotta, Maritza; Guerra Rodríguez, Jayerth (Sello editorial UNAD, 2018-01-08)
      En el presente artículo se presenta la evaluación de la capacidad de bioadsorción de Pb (II) en soluciones sintéticas, utilizando como bioadsorbentes elodea (Egeria densa), vaina de arveja y borra de café. Se realizaron estudios a nivel de laboratorio donde se determinaron el pH y concentración óptimos; encontrando que a pH 4 la elodea y la vaina de arveja presentaron mayor eficiencia de remoción de iones Pb (II) con ...

    • Definición de un proceso metodológico para la construcción de juegos serios para el apoyo de la enseñanza de la física cinemática 

      Aguilar, Carol J; Chanchí, Gabriel E; Vidal, María I (Sello editorial UNAD, 2018-01-08)
      Los juegos serios pueden ser considerados una herramienta proporcionada por las tecnologías de la información y la comunicación, que están siendo usados en diferentes áreas del conocimiento, su objetivo va más allá de la diversión, este tipo de juegos propende por proporcionar al jugador un valor agregado, cuyo enfoque depende del tipo de juego que se desea utilizar. Los juegos serios de tipo educativo, conocidos como ...

    • Heurísticas para evaluación de usabilidad en entornos virtuales de aprendizaje 

      García Soto, Marilú; Espinosa Ramírez, Liliana; García Soto, Marilú; Espinosa Ramírez, Liliana (Sello editorial UNAD, 2018-01-08)
      En la evaluación de la calidad de las aulas virtuales, específicamente de criterios relacionados con usabilidad (que es el tema objeto de esta investigación), y, teniendo en cuenta la política institucional de retención y permanencia establecida por la Universidad Nacional Abierta y a Distancia, así como la necesidad de que el aprehendiente realice su proceso académico de manera eficiente, eficaz, comprensible y amigable, ...

    • Análisis del exoesqueleto para la recuperación del daño en el sistema locomotor a partir de un sensor para la extensión y flexión del brazo 

      Ochoa G, Nancy Edith; Mesa, Carlos Eduardo; Ochoa G, Nancy Edith; Mesa, Carlos Eduardo (Sello editorial UNAD, 2018-01-08)
      Se presentará un estado del arte de los exoesqueletos más relevantes a nivel mundial, y a partir de ello, se realizará un análisis del movimiento de la extremidad superior, enfocado en los movimientos del antebrazo y la muñeca, teniendo en cuenta los puntos y ángulos con sus grados de libertad para evaluar en la extensión y la flexión. Se dan a conocer los tipos de movimientos para los músculos distales y proximales, ...