Persona: Urquía Moraleda, Alfonso
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Urquía Moraleda
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Alfonso
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Publicación Agent-Based Modeling of Traffic Systems Using Modelica(IEEE, 2022-12) Sanz Prat, Víctorino; Urquía Moraleda, AlfonsoA microsimulation model of traffic described using the Modelica language in combination with the Modelica libraries developed by the authors, ABMLib and CellularAutomataLib2, is presented. Modelica facilitates the description of equation-based models using the physical modeling paradigm, and its combination with the discrete-event and agent-based modeling functionality of the developed libraries constitutes a powerful and versatile tool. The functionality of ABMLib is extended to facilitate the description of individual agent behavior as a combination of equation-based and discrete-event models. In this way, vehicle dynamics and fuel consumption are modeled using equations, while driver behavior is described using an agent-based model. Vehicles move along the road, which is described as a combination of interconnected segments that constitute the environment for the agents. A cellular automaton is used to model the CO2 emissions of vehicles to the environment. A model that represents two consecutive road segments with a semaphore between them is used to illustrate the provided functionality.Publicación Object-oriented modelling of virtual-labs for education in chemical process control(Elsevier Science, 2006-01-01) Dormido Bencomo, Sebastián; Martín Villalba, Carla; Urquía Moraleda, AlfonsoPublicación Modelado orientado a objetos de laboratorios virtuales con aplicación a la enseñanza del control de procesos químicos(Actas de las IV Jornadas de Enseñanza a través de Internet/Web de la Ingeniería de Sistemas y Automática, EIWISA2005 (CEA-IFAC), pp.21-26, 2005-01-01) Dormido Bencomo, Sebastián; Martín Villalba, Carla; Urquía Moraleda, AlfonsoPublicación Diagnosis of PEM Fuel Cells through Current Interruption(Elsevier, 2007-01-01) Sebastián, Dormido; Rubio González, Miguel Ángel; Urquía Moraleda, AlfonsoPublicación AN APPROACH TO VIRTUAL-LAB IMPLEMENTATION USING MODELICA(proceedings of 3rd International Modelica Conference, Linkoping (Sweden), pp. 161-170, 2006-01-01) Dormido Bencomo, Sebastián; Martín Villalba, Carla; Urquía Moraleda, AlfonsoPublicación Simulation practice with Modelica(Universidad Nacional de Educación a Distancia (España). Editorial, 2018-10-01) Urquía Moraleda, Alfonso; Martín Villalba, Carla; Rubio González, Miguel Ángel; Sanz Prat, VíctorinoThis activity book is aimed to provide an introduction to the simulation practice in Engineering using Modelica. To this end, we propose a series of thirteen independent hands-on assignments of increasing complexity. Each assignment contains the description of a system and a mathematical model of the system's behavior. The proposed task often consists in describing this mathematical model in the Modelica language and simulate it. In some assignments, the system's behavior is described as an atomic model, without internal structure. Some other assignments ask to design and implement a model library, and to compose the system model by instantiating and connecting components from this model library. Before start working with this activity book, it is advisable to read its companion theory book: a free e-book entitled "Modeling and simulation in Engineering using Modelica", written by Alfonso Urquía and Carla Martín, and published by Editorial UNED in 2018Publicación ARENALib: A Modelica Library for Discrete-Event System Simulation(2006-01-01) Dormido Bencomo, Sebastián; Sanz Prat, Víctorino; Urquía Moraleda, AlfonsoPublicación FuelCell Lib - A Modelica Library for Modeling of Fuel Cells(Modelica, Gerhard Schmitz (editor), 2005-03-07) Guinea Díaz, Domingo; Sebastián, Dormido; Rubio González, Miguel Ángel; Urquía Moraleda, Alfonso; María González, José LeandroPublicación Modeling and simulation in Engineering using Modelica(Universidad Nacional de Educación a Distancia (España). Editorial, 2018-04-01) Urquía Moraleda, Alfonso; Martín Villalba, CarlaThis book offers an introduction to the development and simulation of Modelica models for engineering applications. The target audience are bachelor's or master's level students, interested in modeling and simulation, and with a background in both physics and numerical methods. The book is structured into three parts. The modeling methodology and the Modelica features for continuous-time modeling are discussed in the first part of the book. The simulation of continuous-time Modelica models is addressed in the second part of the book. The third part of the book is devoted to discuss hybrid modeling and simulation in Modelica.The modeling methodology, the Modelica language features, and the use of modeling environments are explained through examples. This facilitates the use of this book in the context of student-centered learning strategies, such as problem-based learning, and project-based learning.Alfonso Urquía and Carla Martín are professors in the Departamento de Informática, UNEDPublicación Combining PDEVS and Modelica for describing agent-based models(SAGE, 2022-05-08) Sanz Prat, Víctorino; Urquía Moraleda, AlfonsoModelica is a general-purpose modeling language mainly designed to facilitate the development, reusability and exchange of models. It represents the state-of-the-art in equation-based modeling of continuous-time systems. Modelica libraries facilitate the description of multi-formalism and multi-domain models. However, the description of agent-based models (ABMs) in Modelica is not currently supported, mainly due to the characteristics of the language and its simulation algorithm. The combination of ABMs with continuous-time equations provides a powerful tool for describing and analyzing complex systems. An approach for describing ABMs using the Modelica language is presented in this manuscript, with the objective of facilitating the combination of ABMs with the rest of Modelica functionality. Agent behavior is described using a process-oriented modeling approach. Agents are described as individual entities that move across a flowchart diagram, that represents the processes that agents undergo. Processes are formally described using the Parallel DEVS formalism, extended to describe the interface with other Modelica models. The environment where agents interact is described as a cellular automaton. This approach has been implemented in a free Modelica library, named ABMLib. Three case studies are discussed to illustrate the modeling functionality of the library and its combination with other models: a basic traffic model, a sheep–wolves predator–prey model and a consumer market model.