Investigación: Recent submissions

Now showing items 81-100 of 480

    • Household stored water quality in an intermittent water supply network in Panama 

      Gonzalez, Carlos I.; Erickson, John; Chavarría, Karina A.; Nelson, Kara L.; Goodridge, Amador (Journal of Water, Sanitation and Hygiene for Development washdev2020156Journal of Water, Sanitation and Hygiene for Development washdev2020156, 2020-04-08)
      Safe water storage is critical to preserve water quality, especially when intermittent piped drinking water supply creates a need for household storage. This study characterized household storage practices and stored water ...

    • Developing an Interactive Environment Through the Teaching of Mathematics with Small Robots 

      Muñoz, Lilia; Villarreal, Vladimir; Morales, Itza; Gonzalez, Joseph; Nielsen, Mel (2020-03-30)
      The article is the product of the study “Development of innovative resources to improve logical-mathematical skills in primary school, through educational robotics”, developed during the 2019 school year in three public ...

    • Water Quality Evaluation of the Cabra River Using Biological Indicators 

      Ortega Baso, Nimia I; Cedeño, Eliezer; Espino, Kleveer; James Rivas, Arthur; Ulises Jiménez, José (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-10-09)
      The objective of this study was to evaluate the water quality of the Cabra River through the use of aquatic macroinvertebrates implementing the EPT and BMWP/Pan indexes. The diversity of orders and families of macroinvertebrates ...

    • Development of a Prototype for Solar Radiation Exploitation on Galvanized Metal Roofs in Panama 

      Labastid C., Dayberto; Bolobosky, Marco; James Rivas, Arthur; Mogollón, Luis (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-10-09)
      The solar energy is an inexhaustible resource available in many areas of our planet. The objective of this investigation is to develop a prototype that takes advantage of the incident solar energy on metal roofs of the ...

    • Introduction to the Application of Phase Change Materials under Tropical Climate of Panama 

      Harris, Itamar; Ortega Del Rosario, Maria De Los Á.; James Rivas, Arthur; Bruneau, Denis (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2016-10-09)
      Phase change materials (PCM) are materials with the ability to store a large amount of energy (latent heat) during their change from solid to a liquid phase. This takes place at a certain melting temperature. Amid the ...

    • Computational Fluid Dynamics Simulation of Coal Gasification in a Circulating Fluidized Bed Reactor 

      Escala, Manuel; James Rivas, Arthur (2019-10-09)
      One of the applications of coal as a fuel is the production of gas through circulating fluidized bed technology. The modeling of these systems allows verifying and optimizing the design and operation parameters of gasifiers ...

    • OTEC Alternative for the Electric Power Generation in Panama 

      López Tenorio, Guillermo; James Rivas, Arthur; De Los Angeles Ortega, Maria; Jurado, Francisco (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-12-30)
      This document presents a qualitative analysis of surface temperatures of the oceanic territory of Panama. These temperatures represent an indication of the potential of the thermal resource in the oceanic territory of ...

    • Biomass carbonization - Production and characterization of biochar from rice husks 

      Bethancourt, Geomara; James Rivas, Arthur; Villarreal, José E.; Marín-Calvo, Nacarí (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-12-30)
      El presente trabajo consistió en producir y caracterizar carbón vegetal a partir de la cascarilla de arroz. La cascarilla de arroz fue generada en un reactor de flujo ascendente tipo Top-lit. Este proceso fue favorable ...

    • The Effect of Gasification Conditions on the Surface Properties of Biochar Produced in a Top-Lit Updraft Gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Wang, Duo; Wang, Donghai; Kumar, Ajay (2020-01-19)
      The effect of airflow rate, biomass moisture content, particle size, and compactness on the surface properties of biochar produced in a top-lit updraft gasifier was investigated. Pine woodchips were studied as the feedstock. ...

    • Characterization of Biochar from Rice Hulls and Wood Chips Produced in a Top-Lit Updraft Biomass Gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Boyette, Michael D.; Wang, Donghai; Kumar, Ajay (2016-01-01)
      The objective of this study was to characterize biochar produced from rice hulls and wood chips in a top-lit updraft gasifier. Biochar from four airflows (8, 12, 16, or 20 L min-1) and two insulation conditions (not insulated ...

    • Airflow and insulation effects on simultaneous syngas and biochar production in a top-lit updraft biomass gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Wang, Donghai; Boyette, Michael D. (2017-10-11)
      The objective of this study was to understand the effect of airflow and insulation on syngas and biochar generations of rice hulls and woodchips in a top-lit updraft gasifier. Biochar yield decreased with increasing airflow. ...

    • The Effect of Biomass Physical Properties on Top-Lit Updraft Gasification of Woodchips 

      James Rivas, Arthur; Yuan, Wenqiao; Boyette 2, Michael D. (2016-04-12)
      The performance of a top-lit updraft gasifier affected by biomass (pine wood) particle size, moisture content and compactness was studied in terms of the biochar yield, biomass burning rate, syngas composition and tar ...

    • Application of pedagogical robotics in learning for children with special needs APRoLeCSNe 

      Rangel, José Carlos; Batista, Karina Ibeth; Salazar, Rodolfo Elías; Pinzón, Cristian Iván (08/23/2013)
      APRoLeCSNe is a project that presents the approach of pedagogical robotics to support the learning methods for children with special learning needs (CSLN). Pedagogical Robotics focuses on inductive learning and guided ...

    • Automatic OSPF Topology map generation using information of the OSPF database 

      Navarro, Manuel; Rangel, José Carlos; Cruz, Edmanuel (02/11/2018)
      Nowadays, different technologies provide support to different areas of our diverse lifestyles around the world. Highly reputable companies are doing important research on the connectivity of multiple devices to the different ...

    • Multiagent System for Semantic Categorization of Places Mean the Use of Distributed Surveillance Cameras 

      Rangel, José Carlos; Pinzón, Cristian (01/09/2019)
      Surveillance systems are quite common in almost every building. The current dimension of these systems is huge and involves a great deal of hardware and human resources for achieving these objectives. This paper proposes ...

    • Semantic Localization of a Robot in a Real Home 

      Bauer, Zuria; Rangel, José Carlos; Cazorla, Miguel; Gomez Donoso, Francisco (11/21/2018)
      In social robotics, it is important that a mobile robot knows where it is because it provides a starting point for other activities such as moving from one room to another. As a contribution to solving this problem in the ...

    • How to add new knowledge to already trained deep learning models applied to semantic localization 

      Cruz, Edmanuel; Rangel, José Carlos; Gomez Donoso, Francisco; Cazorla, Miguel (06/19/2019)
      The capacity of a robot to automatically adapt to new environments is crucial, especially in social robotics. Often, when these robots are deployed in home or office environments, they tend to fail because they lack the ...

    • Robot Semantic Localization Through CNN Descriptors 

      Cruz, Edmanuel; Rangel, José Carlos; Cazorla, Miguel (11/12/2017)
      Semantic localization for mobile robots involves an accurate determination of the kind of place where a robot is located. Therefore, the representation of the knowledge of this place is crucial for the robot. In this paper ...

    • Geoffrey: An Automated Schedule System on a Social Robot for the Intellectually Challenged 

      Rangel, José Carlos; Cruz, Edmanuel; Escalona, Félix; Bauer, Zuria; Cazorla, Miguel; García Rodríguez, José; Martinez Martin, Ester; Gomez Donoso, Francisco (12/02/2018)
      The accelerated growth of the percentage of elder people and persons with brain injury-related conditions and who are intellectually challenged are some of the main concerns of the developed countries. These persons often ...

    • Automatic semantic maps generation from lexical annotations 

      Rangel, José Carlos; Cazorla, Miguel; García Varea, Ismael; Romero González, Cristina; Martínez Gómez, Jesus (03/15/2018)
      The generation of semantic environment representations is still an open problem in robotics. Most of the current proposals are based on metric representations, and incorporate semantic information in a supervised fashion. ...