Now showing items 329-348 of 1452

    • The data envelopment analysis to determine efficiency of Latin American countries for greenhouse gases control in electric power generation 

      Sánchez, Leadina; Vásquez, Carmen; Viloria Silva, Amelec Jesus (International Journal of Energy Economics and Policy, 2018)
      The objective of this research is to determine the efficiency of Latin American countries for the control of greenhouse gas (GHG) emissions due to the generation of electrical energy using the Data Envelopment Analysis. A ...
    • Data from a photovoltaic system using fuzzy logic and the P&O algorithm under sudden changes in solar irradiance and operating temperature 

      Robles Algarin, Carlos Arturo; Rodriguez Alvarez, Omar; Ospino Castro, Adalberto Jose (Data in Brief, 2018-11-05)
      This article presents the data of a PV system using fuzzy logic and the perturb and observe (P&O) algorithm, under sudden changes in the solar irradiance and the operating temperature of a PV module. The mathematical ...
    • Data mining and neural networks to determine the financial market prediction 

      Silva, Jesus; García Guliany, Jesús; Hernandez, Lissette; Portillo, Rafael; Varela, Noel; Hernandez Palma, Hugo Gaspar; Redondo Bilbao, Osman; Valero, Lesbia (Universidad de la Costa, 2020-03-05)
      Predicting stock market movements has been a complex task for years by gaining the increasing interest of researchers and investors present all around the world. These have tried to get ahead of the way in order to know ...
    • Data mining and social network analysis on Twitter 

      Silva, Jesus; Varela, Noel; Ovallos-Gazabon, David; Hernandez Palma, Hugo Gaspar; Cazallo-Antunez, Ana; Redondo Bilbao, Osman; ORELLANO LLINAS, NATALY; Pineda Lezama, Omar Bonerge (Universidad de la Costa, 2020-03-05)
      The emergence of a networked social structure in the last decade of twentieth century is accelerated by the evolution of information technologies and, in particular, the Internet has given rise to the full emergence of ...
    • Data mining applied in school dropout prediction 

      amelec, viloria; García Guliany, Jesús; Niebles Núñez, William; Hernandez Palma, Hugo Gaspar; Niebles Nuñez, Leonardo David (Journal of Physics: Conference Series, 2020)
      In recent years, many studies have emerged about regarding the topic of school failure, showing a growing interest in determining the multiple factors that may influence it [1]. Most of the researches that attempt to solve ...
    • Data mining techniques and multivariate analysis to discover Patterns in university final researches 

      Amelec, Viloria; Rodríguez López, Jorge; García Leyva, Diana Margarita; Vargas Mercado, Carlos; Hernández-Palma, Hugo; Orellano Llinas, Nataly; Arrozola David, Mónica; Velasquez Rodriguez, Javier (Procedia Computer Science, 2019)
      The aim of this study is to extract knowledge from the final researches of the Mumbai University Science Faculty. Five classification models were applied: Vector Support Machines, Neural Networks, Decision Tree, Random ...
    • Data mining to identify risk factors associated with university students dropout 

      Viloria Silva, Amelec Jesus; Castro Sarmiento, Alex; María Santodomingo, Nicolás; María Santodomingo, Nicolas Elias; Márquez Blanco, Norka; Cadavid Basto, Wilmer; Hernández P, Hugo; Navarro Beltrán, Jorge; de la Hoz Hernández, Juan; Romero, Ligia (Communications in Computer and Information Science, 2019-07-26)
      . This paper presents the identification of university students dropout patterns by means of data mining techniques. The database consists of a series of questionnaires and interviews to students from several universities ...
    • Data processing for direct marketing through Big Data 

      amelec, viloria; Varela, Noel; MALDONADO PEREZ, DOYREG; Pineda Lezama, Omar Bonerge (Universidad de la Costa, 2020-01-07)
      Traditional marketing performs promotion through various channels such as news in newspapers, radio, etc., but those promotions are aimed at all people, whether or not interested in the product or service being promoted. ...
    • Data sciences and teaching methods—learning 

      Silva, Jesus; Portillo, Rafael; Hernandez, Ana Emilia; Varela, Noel; Martinez Caraballo, Hugo; Hernández Palma, Hugo Gaspar; Redondo Bilbao, Osman; Leon Castro, Nadia (Universidad de la Costa, 2020-03-05)
      Data Science (DS) is an interdisciplinary field responsible for extracting knowledge from the data. This discipline is particularly complex in the face of Big Data: large volumes of data make it difficult to store, process ...
    • Data supporting the assessment of biomass based electricity and reduced ghg emissions in Cuba 

      Sagastume Gutierrez, Alexis; Cabello Eras, Juan Jose; Vandecasteele A., Carlo H. (Data In Brief, 2018-02-25)
      Assessing the biomass based electricity potential of developing nations like Cuba can help to reduce the fossil fuels dependency and the greenhouse gas emissions. The data included in this study present the evolution ...
    • Data supporting the evaluation of the energy recovery potential of thermoelectric generators in diesel engines 

      Ramírez, Rafael; Sagastume, Alexis; Cabello Eras, Juan José; Hernandez, Brando; Duarte Forero, Jorge (Data in Brief, 2019-12-30)
      Power generation with thermoelectric devices in internal combustion engines is an alternative to recover some of the energy loss with the exhausts. This data article supports a study that assesses the potentialities of ...
    • Data supporting the forecast of electricity generation capacity from non-conventional renewable energy sources in Colombia 

      Sagastume, Alexis; BALBIS MOREJON, MILEN; Cabello Eras, Juan José; Cabello Ulloa, Mario Javier; Rey-Martínez, Francisco Javier; Rueda-Bayona, Juan Gabriel (Data in Brief, 2019-12-05)
      The data included in this study was calculated based on data provided by the national project registry provided by the Colombian government. The data forecasts the evolution of the power generation capacity registered in ...
    • Data supporting the improvement of forecasting and control of electricity consumption in hotels 

      Cabello Eras, Juan José; Sousa Santos, Vladimir; Sagastume, Alexis; Vandecasteele, Carlo (Data in brief, 2019-06-12)
      Improving and managing the electricity efficiency in hotel facilities is essential to reduce the hotel operation costs and its environmental impacts. The data presented shows the evolution of the electricity consumption ...
    • Data to support the assessment of the energy efficiency estimation methods on induction motors considering real-time monitoring. 

      Sousa Santos, Vladimir; Cabello Eras, Juan José; Sagastume, Alexis; Cabello Ulloa, Mario Javier (Data in Brief, 2020-03-23)
      The data presented in this article was used to assess and compare the most important methods used to estimate the efficiency during the operation of induction motors at different loads and power supply conditions. The ...
    • Database knowledge discovery In marketing companies 

      Amelec, Viloria; Li, Jin; Manosalva Sandoval, Jessica; Vargas Villa, Jesús (Universidad de la Costa, 2019)
      In recent years, technological development in both the computing and data transmission fields has allowed the storage and management of large volumes of data. Today, businesses move in highly competitive and continuous ...
    • Database performance tuning and query optimization 

      J. Kamatkar, Sadhana; Kamble, Ajit; Viloria Silva, Amelec Jesus; Hernández Fernández, Lissette; Garcia Cali, Ernesto Rafael (Lecture Notes in Computer Science, 2018)
      Today, IT professionals are challenged with the task of ongoing improvements to achieve goals of businesses. Unfortunately, some factor/Resources, skill environment does not dynamically grow as fast as business needs. That ...
    • Datação por luminescência opticamente estimulada (LOE) de uma planície de cordões litorâneos do litoral norte do rio grande do Sul, Brasil 

      Portantiolo Manzolli, Rogério; Borges de Bitencourt, Volney Junior; Rebello Dillenburg, Sérgio; Guimarães Barboza, Eduardo; Caron, Felipe; Oliveira Sawakuchi, André (Associacao Brasileira de Estudos do Quaternario, 2017)
      Neste trabalho, é utilizada a aplicação da LuminescênciaOpticamente Estimulada (LOE) para datar sedimentos em uma planície de cordões litorâneos arenosos de margem lagunar, na porção norte do litoral do Rio ...
    • Dataset after seven years simulating hybrid energy systems with Homer Legacy 

      Beluco, Alexandre; During F, Frederico A.; Silva, Lúcia M. R.; Silva, Jones S.; Teixeira, Lúis E.; Vasco, Gabriel; Canales, Fausto; G. Rossini, Elton; de Souza, José; Daronco, Giuliano C.; Risso, Alfonso (Data Science Journal, 2020)
      Homer Legacy software is a well-known software for simulation of small hybrid systems that can be used for both design and research. This dataset is a set of files generated by Homer Legacy bringing the simulation results ...
    • Dataset for estimation of obesity levels based on eating habits and physical condition in individuals from Colombia, Peru and Mexico 

      Mendoza Palechor, Fabio; de la Hoz Manotas, Alexis (Data in Brief, 2019-08)
      This paper presents data for the estimation of obesity levels in individuals from the countries of Mexico, Peru and Colombia, based on their eating habits and physical condition. The data contains 17 attributes and 2111 ...
    • Dataset of human interventions as anthropogenic perturbations on the Caribbean coast of Colombia 

      Botero, C.M.; Pereira, C.I.; B. Milanés, Celene (Data in Brief, 2020-06-12)
      Human interventions on coastal areas are always causing environmental impact; however, most of the times inventories of those interventions are possibly not well structured, and surely without a specific standard. The raw ...