Productos de investigación: Envíos recientes

Mostrando ítems 161-180 de 1397

    • Linear-based Newton-Raphson Approximation for Power Flow Solution in DC Power Grids 

      Montoya, O.D; Gil-González, W.; Grisales-Noreña, L.F. (Cartagena de Indias, 2018)
      This paper presents a linear-based Newton method for load flow solution in DC power grids. This approximation is based on the classical Taylor's series expansion combined to the open-circuit voltage obtained when all the ...

    • Learning the therapeutic use of drugs from the three-dimensional spatial information of their molecular structure with convolutional neural networks 

      Martínez-Conde, Jorge Mario; Patiño-Vanegas, Alberto (Cartagena de Indias, 2021)
      Abstract The development of new molecules is a multi-stage process and clinical trials to verify their efficacy cost billions of dollars each year. Machine learning is a tool that is rapidly advancing in image, voice, and ...

    • Learning Styles, Gender and Academic Performance in Students in the Fundamentals of Economics Course 

      Alvis-Arrieta, Jorge; Arellano-Cartagena, William; Muñiz-Olite, Jorge (Cartagena de Indias, 2023)
      Acevedo Pierart, C. G., & Rocha Paves, F. (2011). Learning styles, gender and academic performance. Journal of Learning Styles, 4(8), 71-84.

    • Polylactic acid effectively reinforced with reduced graphitic oxide 

      De La Cruz Natera, Alejandra; Cordero García, Adriana; Restrepo Betancourt, Juan; Arias Tapia, Mary Judith (Cartagena de Indias, 2022-09-01)
      The present study was developed to reinforce a thermoplastic matrix with carbonaceous material to improve its thermal and mechanical properties. Composite materials formed from the homogenization of polylactic acid (PLA) ...

    • Learning strategies in Colombian undergraduate and graduate students 

      Jerónimo-Arango, Lida Cruz; Yaniz-Álvarez-De-Eulate, Concepción; Carcamo-Vergara, Carolina (Cartagena de Indias, 2020)
      This research article expounds the importance of the teacher learning quality and analyzes the learning strategies in undergraduate and graduate students of Education programs. A non-probability sampling including 534 ...

    • Learning modes in current contexts to improve the teaching process 

      López Fernández, Raúl; Nieto Almeida, Lázaro Emilio; Vera Zapata, Juan Antonio; Quintana Álvarez, Moisés R (Cartagena de Indias, 2021)
      Learning is a subject of constant concern for all those dedicated to this activity, where there are different paradigmatic ap-proaches. The objective of this work is to assess the different types of learning associated ...

    • Positioning and status of the Spanish numismatic journals in scientific databases 

      Vázquez-Miraz, Pedro (Cartagena de Indias, 2019)
      The following article captures the current situation of the Spanish scientific journals focused on numismatics and their positioning in the main international bibliographical (Latindex, Web of Science and Scopus) and Spanish ...

    • Informalidad laboral en 13 ciudades áreas metropolitanas de Colombia (2019-2020) 

      Araujo-Martínez, Dalel; Segrera-Castilla, Michael; Jiménez-Castilla, Tania (Cartagena de Indias, 2022)
      Labour informality has major relevance on the world economy and Colombia is no exception; historically the country has been characterised by elevated rates of informality related to poverty indicator variables. The purpose ...

    • Control of a charging station for electric vehicles 

      Martín Fernández, L.; Serra, F; De Angelo, C; Montoya, O (Cartagena de Indias, 2020)
      A weighted average current control applied to a three-phase inductor-capacitor-inductor grid-connected battery charger for electric vehicles is presented in this paper. The proposed controller is based on a combination of ...

    • Community diagnosis for integral management of solid waste. Case study: Barrio Fredonia, Cartagena 

      Ariza-Díaz, Andrea; Sánchez-De La Torre, Valeria; Bahamón-Restrepo, Andrés; Díaz-Mendoza, Claudia; Pasqualino, Jorgelina (Cartagena de Indias, 2020)
      Introduction. The Fredonia neighborhood in Cartagena presents a problem associated with the inadequate management of solid waste, the work carried out seeks the active participation of the community in the identification ...

    • Clinical manifestations of congenital insensitivity to pain with anhidrosis 

      Santoya Montes, Yanin Elena; Puentes Rozo, Pedro (Cartagena de Indias, 2020)
      Introduction: The congenital insensitivity to pain with anhidrosis (HSAN IV) is a rare disease, which results in different with multisystem symptoms, impacting cognitive functions that affect negatively the quality of life ...

    • Colombian fruit and vegetables recognition using convolutional neural networks and transfer learning 

      Alvarez-Canchila, O.I.; Arroyo-Pérez, D.E; Patiňo-Saucedo, A.; Rostro González, H.; Patĩo-Vanegas, A. (Cartagena de Indias, 2020)
      Automatic image recognition is a convenient option for labeling and categorizing fruits and vegetables in supermarkets. This paper proposes the design and implementation of an automatic classification system for Colombian ...

    • Cluster analysis in Higher Education Institutions' knowledge identification and production processes 

      Escorcia Guzman, Jey Howard; Zuluaga Ortiz, Rohemi Alfredo; Garizabal Donado, Luz Eliana; Marquez-Castillo, Andres; Delahoz-Dominguez, Enrique José; Suarez-Sánchez, María (Cartagena de Indias, 2022)
      The objective of this study is to describe the processes of identification and creation of knowledge in higher education institutions (HEI). The sample is composed of 7 universities in the city of Barranquila in Colombia, ...

    • Comparative Management Analysis Knowledge in Colombian and Chilean SMEs: Theoretical Approach 

      Gualdrón, Carlos; González, Alejandra; Keyner, Galera (Cartagena de Indias, 2022)
      The objective of this study is to develop a comparative study of knowledge management and the most representative models applied in Chilean SMEs versus the models proposed in Colombia, with the purpose of adopting those ...

    • Clustering Techniques Performance for the Coordination of Adaptive Overcurrent Protections 

      Barranco, Carlos, A.; Orozco Henao, C.; Marín Quintero, J.; Mora Flórez, J.; Herrera Orozco, A. (Cartagena de Indias, 2022)
      Inclusion of distributed generation and topological changes in a network originate several operating scenarios. For this reason, techniques that adjust the configuration of overcurrent relays have been developed in order ...

    • Conceptual Evolution of Peace Journalism: Origin, Development, Critiques and Contributions to Peace Studies 

      Arroyave, Jesús; Garcés Prettel, Miguel (Cartagena de Indias, 2022)
      The mass media have focused on reporting more on issues of war than on peace. Hence, peace journalism emerges as a narrative option that contributes to the peaceful resolution of conflicts, in a context where truth, rigorous ...

    • Colombian Truth Commission: Knowledge, perception, efficacy, and associated emotions 

      Ruiz, José Ignacio; Castro-Abril, Pablo; López-López, Wilson; Páez, Darío; Méndez, Lander; Castro-Molinares, Suly; Yadira-Cepeda, Zulma; Caicedo-Bucheli, María Alejandra; Amaris, María del Carmen; Moncayo, Jorge Eduardo; Camelo-Mendoza, Rossana; Orduz-Gualdron, Frank Steward; Beltrán-Espitia, Manuel; Lorena Mongui, Zulma; Domínguez, Elsy; Alejo-Riveros, Argemiro; Pérez-Cervantes, Luís Eduardo; Orozco Castillo, Carolina; Alvarado-Pinzón, Laura; Restrepo-Soto, Jaime Alberto; Alejo-Castillo, Edgar; Orejuela, Johnny; Rocha, Areli; Pérez Arizabaleta, Mar (Cartagena de Indias, 2022)
      The Truth Commission in Colombia was established based on the transitional justice model. Its function is to serve as a measure of recognition of the violent events during the armed conflict, which has left more than nine ...

    • Comparative Analysis of The Solid Waste Management Plans of Bogotá D.C and Mexico City 

      Rodríguez-Díaz, Andrés; Díaz-Mendoza, Claudia; Pasqualino, Jorgelina; Bahamón-Restrepo, Andrés (Cartagena de Indias, 2022)
      Introduction. Mexico City has approximately 8’918,853 inhabitants that generate an average of 12,893 tons / day, while Bogotá, with more than 7’412,516 inhabitants generates an approximate of 7,200 tons / day. Objective. ...

    • Concentrations of Airborne Cultivable Fungi at a Higher Education Institution in Cartagena de Indias, Colombian Caribbean 

      Rubiano-Labrador, Carolina; Baena De Avila, Ludys; Doria Posada, Dayana; Acevedo-Barrios, Rosa (Cartagena de Indias, 2022)
      Bioaerosols are as small particles suspended in air that contain several microorganisms (bacteria, fungi, and viruses). These particles are studied because of the possible impacts that they have on the health of humans and ...

    • Climate anxiety, wellbeing and pro-environmental action: correlates of negative emotional responses to climate change in 32 countries 

      Ogunbode, Charles A.; Doran, Rouven; Hanss, Daniel; Ojala, Maria; Salmela-Aro, Katariina; van den Broek, Karlijn L.; Bhullar, Navjot; Aquino, Sibele D.; Marot, Tiago; Schermer, Julie Aitken; Wlodarczyk, Anna; Lu, Su; Jiang, Feng; Maran, Daniela Acquadro; Yadav, Radha; Ardi, Rahkman; Chegeni, Razieh; Ghanbarian, Elahe; Zand, Somayeh; Najafi, Reza; Park, Joonha; Tsubakita, Takashi; Tan, Chee-Seng; Chukwuorji, JohnBosco Chika; Ojewumi, Kehinde Aderemi; Tahir, Hajra; Albzour, Mai; Reyes, Marc Eric S.; Lins, Samuel; Enea, Violeta; Volkodav, Tatiana; Sollar, Tomas; Navarro-Carrillo, Ginés; Torres-Marín, Jorge; Mbungu, Winfred; Ayanian, Arin H.; Ghorayeb, Jihane; Onyutha, Charles; Lomas, Michael J.; Helmy, Mai; Martínez-Buelvas, Laura; Bayad, Aydin; Karasu, Mehmet (Cartagena de Indias, 2022)
      This study explored the correlates of climate anxiety in a diverse range of national contexts. We analysed cross-sectional data gathered in 32 countries (N = 12,246). Our results show that climate anxiety is positively ...

      Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.