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El CITEEC lidera la investigación en ingeniería civil y edificación, enfocándose en soluciones innovadoras para infraestructuras sostenibles y materiales avanzados.
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Investigación de vanguardia para el desarrollo sostenible
El CITEEC realiza investigación avanzada en ingeniería civil, materiales, sostenibilidad e infraestructuras. A través de proyectos multidisciplinarios y colaboraciones internacionales, se generan publicaciones científicas que abordan retos clave del sector. En esta sección se presentan las principales publicaciones y resultados obtenidos por nuestros grupos de investigación.
Accede a una amplia variedad de publicaciones científicas filtradas por temática, autor, año y más. Utiliza los filtros disponibles para encontrar investigaciones relevantes y obtener detalles sobre cada una de nuestras contribuciones al avance del conocimiento.
2004
Pedreira, Nieves; Dorado, Julián; Rabuñal-Dopico, Juan R.; Pazos, Alejandro; Silva, Andrés
A model of virtual 'learning to learn' Conferencia
2004, ISBN: 0769521819; 9780769521817, (cited By 1).
Resumen | Enlaces | BibTeX | Etiquetas: Computer games; E-learning; Knowledge management (KM); Virtual learning, Education; Game theory; Information technology; Knowledge based systems; Students; Virtual reality, Learning systems
@conference{Pedreira2004838,
title = {A model of virtual 'learning to learn'},
author = {Nieves Pedreira and Julián Dorado and Juan R. Rabuñal-Dopico and Alejandro Pazos and Andrés Silva},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-13244249721&doi=10.1109%2fICALT.2004.1357680&partnerID=40&md5=43f29ecdd88565ab27bfea85c57c5e41},
doi = {10.1109/ICALT.2004.1357680},
isbn = {0769521819; 9780769521817},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {Proceedings - IEEE International Conference on Advanced Learning Technologies, ICALT 2004},
pages = {838-839},
abstract = {Event though Information and Communications technology arises as a powerful tool for the improvement of education, at present, e-learning does not improve learning methods but merely repeats the problems of traditional education. This work proposes a new educational model that tries to tackle these problems. Through the use of a global ontology as basis of a Knowledge Management System, this system allows us to establish the largest number of relationships within the available information, and its classification. From this knowledge support, learning is planned through action, which results in the execution of tasks that are based on computer games strategies. The system interacts with the student to motivate him, showing him the information adapted to his preferences.},
note = {cited By 1},
keywords = {Computer games; E-learning; Knowledge management (KM); Virtual learning, Education; Game theory; Information technology; Knowledge based systems; Students; Virtual reality, Learning systems},
pubstate = {published},
tppubtype = {conference}
}
Event though Information and Communications technology arises as a powerful tool for the improvement of education, at present, e-learning does not improve learning methods but merely repeats the problems of traditional education. This work proposes a new educational model that tries to tackle these problems. Through the use of a global ontology as basis of a Knowledge Management System, this system allows us to establish the largest number of relationships within the available information, and its classification. From this knowledge support, learning is planned through action, which results in the execution of tasks that are based on computer games strategies. The system interacts with the student to motivate him, showing him the information adapted to his preferences.
Rabuñal-Dopico, Juan R.; Dorado, Julián; Pazos, Alejandro; Pereira, Javier; Rivero, Daniel
A new approach to the extraction of ANN rules and to their generalization capacity through GP Artículo de revista
En: Neural Computation, vol. 16, no 7, pp. 1483-1523, 2004, ISSN: 08997667, (cited By 31).
Resumen | Enlaces | BibTeX | Etiquetas: algorithm; article; artificial intelligence; artificial neural network; audiovisual equipment; computer program; decision tree; genetics; human; information retrieval; learning; probability; reproducibility; sensitivity and specificity; signal processing, Algorithms; Artificial Intelligence; Decision Trees; Generalization (Psychology); Genetics; Humans; Information Storage and Retrieval; Models, Computer-Assisted; Software; Software Design, Structural; Neural Networks (Computer); Probability; Reproducibility of Results; Sensitivity and Specificity; Signal Processing
@article{Rabuñal20041483,
title = {A new approach to the extraction of ANN rules and to their generalization capacity through GP},
author = {Juan R. Rabuñal-Dopico and Julián Dorado and Alejandro Pazos and Javier Pereira and Daniel Rivero},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-2942627098&doi=10.1162%2f089976604323057461&partnerID=40&md5=ef590a267f992c932760f6346f621544},
doi = {10.1162/089976604323057461},
issn = {08997667},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {Neural Computation},
volume = {16},
number = {7},
pages = {1483-1523},
abstract = {Various techniques for the extraction of ANN rules have been used, but most of them have focused on certain types of networks and their training. There are very few methods that deal with ANN rule extraction as systems that are independent of their architecture, training, and internal distribution of weights, connections, and activation functions. This article proposes a methodology for the extraction of ANN rules, regardless of their architecture, and based on genetic programming. The strategy is based on the previous algorithm and aims at achieving the generalization capacity that is characteristic of ANNs by means of symbolic rules that are understandable to human beings.},
note = {cited By 31},
keywords = {algorithm; article; artificial intelligence; artificial neural network; audiovisual equipment; computer program; decision tree; genetics; human; information retrieval; learning; probability; reproducibility; sensitivity and specificity; signal processing, Algorithms; Artificial Intelligence; Decision Trees; Generalization (Psychology); Genetics; Humans; Information Storage and Retrieval; Models, Computer-Assisted; Software; Software Design, Structural; Neural Networks (Computer); Probability; Reproducibility of Results; Sensitivity and Specificity; Signal Processing},
pubstate = {published},
tppubtype = {article}
}
Various techniques for the extraction of ANN rules have been used, but most of them have focused on certain types of networks and their training. There are very few methods that deal with ANN rule extraction as systems that are independent of their architecture, training, and internal distribution of weights, connections, and activation functions. This article proposes a methodology for the extraction of ANN rules, regardless of their architecture, and based on genetic programming. The strategy is based on the previous algorithm and aims at achieving the generalization capacity that is characteristic of ANNs by means of symbolic rules that are understandable to human beings.
Rivero, Daniel; Rabuñal-Dopico, Juan R.; Dorado, Julián; Pazos, Alejandro
Using genetic programming for character discrimination in damaged documents Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 3005, pp. 349-358, 2004, ISSN: 03029743, (cited By 5).
Resumen | Enlaces | BibTeX | Etiquetas: Genetic algorithms; Genetic programming; Problem solving, Image processing, Image processing technique; Old documents
@article{Rivero2004349,
title = {Using genetic programming for character discrimination in damaged documents},
author = {Daniel Rivero and Juan R. Rabuñal-Dopico and Julián Dorado and Alejandro Pazos},
editor = {Branke J. Cagnoni S. Raidl G.R.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-35048814697&doi=10.1007%2f978-3-540-24653-4_36&partnerID=40&md5=e5d47f1173786f4b5fa9657bf04ec185},
doi = {10.1007/978-3-540-24653-4_36},
issn = {03029743},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {3005},
pages = {349-358},
publisher = {Springer Verlag},
abstract = {This paper presents an application of Genetic Programming (GP) to solve one problem in the field of image processing. This problem is the recovery of a deteriorated old document from the damages caused by centuries. This document was affected by many aggresive agents, mainly by the humidity caused by a wrong storage during many years. This makes this problem particularly hard and unaffordable by other image processing techniques. Recent works have shown how Genetic Algorithms is a technique suitable for this task, but in this paper it will be shown how to obtain better results with GP. © Springer-Verlag 2004.},
note = {cited By 5},
keywords = {Genetic algorithms; Genetic programming; Problem solving, Image processing, Image processing technique; Old documents},
pubstate = {published},
tppubtype = {article}
}
This paper presents an application of Genetic Programming (GP) to solve one problem in the field of image processing. This problem is the recovery of a deteriorated old document from the damages caused by centuries. This document was affected by many aggresive agents, mainly by the humidity caused by a wrong storage during many years. This makes this problem particularly hard and unaffordable by other image processing techniques. Recent works have shown how Genetic Algorithms is a technique suitable for this task, but in this paper it will be shown how to obtain better results with GP. © Springer-Verlag 2004.
Pedreira, Nieves; Dorado, Julián; Rabuñal-Dopico, Juan R.; Pazos, Alejandro; Silva, Andrés
Knowledge management and interactive learning Conferencia
vol. 3257, Springer Verlag, 2004, ISSN: 03029743, (cited By 1).
Resumen | Enlaces | BibTeX | Etiquetas: Computer games; e-learning models; Interactive learning; Knowledge management; E-learning models; Knowledge management system; Learning process, Knowledge engineering; Knowledge management
@conference{Pedreira2004481,
title = {Knowledge management and interactive learning},
author = {Nieves Pedreira and Julián Dorado and Juan R. Rabuñal-Dopico and Alejandro Pazos and Andrés Silva},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-22944474948&doi=10.1007%2f978-3-540-30202-5_37&partnerID=40&md5=6c05da52dcfc0a9f98696523bbdadfdc},
doi = {10.1007/978-3-540-30202-5_37},
issn = {03029743},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {Lecture Notes in Artificial Intelligence (Subseries of Lecture Notes in Computer Science)},
volume = {3257},
pages = {481-482},
publisher = {Springer Verlag},
abstract = {This work presents a proposal for an e-learning model that facilitate the learning process. Using a Knowledge Management System as support, learning is planned through action, which results in the execution of tasks based on computer games strategies. Both contents of the course and tasks are included into the Institutional Memory of System. The design of this Institutional Memory shows as a basis for the system. Intelligent agents will adapt the tasks to the level and preferences of the student. © Springer-Verlag Berlin Heidelberg 2004.},
note = {cited By 1},
keywords = {Computer games; e-learning models; Interactive learning; Knowledge management; E-learning models; Knowledge management system; Learning process, Knowledge engineering; Knowledge management},
pubstate = {published},
tppubtype = {conference}
}
This work presents a proposal for an e-learning model that facilitate the learning process. Using a Knowledge Management System as support, learning is planned through action, which results in the execution of tasks based on computer games strategies. Both contents of the course and tasks are included into the Institutional Memory of System. The design of this Institutional Memory shows as a basis for the system. Intelligent agents will adapt the tasks to the level and preferences of the student. © Springer-Verlag Berlin Heidelberg 2004.
Cea-Gómez, Luis; Vazquez-Cendón, María Elena; Puertas-Agudo, Jerónimo; Penatt, L.
2004, (cited By 4).
Resumen | Enlaces | BibTeX | Etiquetas: Computational methods; Diffusion; Navier Stokes equations, Diffusion in liquids, Discretization errors; Discretizations; Hydrodynamic flows; Incompressible fluid; Numerical treatments; Practical engineering; Shallow water equations; Shallow waters
@conference{Cea2004,
title = {Numerical treatment of turbulent and mass source terms in the shallow waters equations for chanels with irregular section},
author = {Luis Cea-Gómez and María Elena Vazquez-Cendón and Jerónimo Puertas-Agudo and L. Penatt},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893458399&partnerID=40&md5=f48167fed90019a9b79bcf9c952670f4},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {ECCOMAS 2004 - European Congress on Computational Methods in Applied Sciences and Engineering},
abstract = {The shallow water equations are derived from the Navier-Stokes equations for incompressible fluids and are valid when the vertical velocity and acceleration of the fluid are small. The equations are adequate to model a big range of the hydrodynamic flows which appear in practical engineering situations. The shallow water equations can account for the effects of the bed slope, wind and bottom friction, turbulence, varying channel section and mass source due to superficial waters or infiltration. It has been proved by Bermudez and Vazquez [3] the convenience of upwinding the bed slope source term in order to reduce discretization errors introduced in the upwinded convective flux terms. Vazquez-Cendón [10] showed also the need of upwinding the source terms which account for the varying geometry of the transversal section. This paper focus on the study of the mass and turbulent terms in the shallow water equations, analyzing the convenience of upwinding them from an accurate as well as a stability point of view. A steady solution to the equations which relate the bed slope with the mass and turbulent terms is proposed.},
note = {cited By 4},
keywords = {Computational methods; Diffusion; Navier Stokes equations, Diffusion in liquids, Discretization errors; Discretizations; Hydrodynamic flows; Incompressible fluid; Numerical treatments; Practical engineering; Shallow water equations; Shallow waters},
pubstate = {published},
tppubtype = {conference}
}
The shallow water equations are derived from the Navier-Stokes equations for incompressible fluids and are valid when the vertical velocity and acceleration of the fluid are small. The equations are adequate to model a big range of the hydrodynamic flows which appear in practical engineering situations. The shallow water equations can account for the effects of the bed slope, wind and bottom friction, turbulence, varying channel section and mass source due to superficial waters or infiltration. It has been proved by Bermudez and Vazquez [3] the convenience of upwinding the bed slope source term in order to reduce discretization errors introduced in the upwinded convective flux terms. Vazquez-Cendón [10] showed also the need of upwinding the source terms which account for the varying geometry of the transversal section. This paper focus on the study of the mass and turbulent terms in the shallow water equations, analyzing the convenience of upwinding them from an accurate as well as a stability point of view. A steady solution to the equations which relate the bed slope with the mass and turbulent terms is proposed.
Cea-Gómez, Luis; Ferreiro, Ana; Vázquez-Cendón, María Elena; Puertas-Agudo, Jerónimo
Experimental and numerical analysis of solitary waves generated by bed and boundary movements Artículo de revista
En: International Journal for Numerical Methods in Fluids, vol. 46, no 8, pp. 793-813, 2004, ISSN: 02712091, (cited By 13).
Resumen | Enlaces | BibTeX | Etiquetas: boundary layer; computational fluid dynamics; mathematical analysis; wave, Computer simulation; Finite volume method; Mathematical models; Reflection; Wave propagation, Hill slope sliding; Numerical models; Solitary waves, Waves
@article{Cea2004793,
title = {Experimental and numerical analysis of solitary waves generated by bed and boundary movements},
author = {Luis Cea-Gómez and Ana Ferreiro and María Elena Vázquez-Cendón and Jerónimo Puertas-Agudo},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-7744246711&doi=10.1002%2ffld.774&partnerID=40&md5=d8600da14957a1bd116db051977439cd},
doi = {10.1002/fld.774},
issn = {02712091},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {International Journal for Numerical Methods in Fluids},
volume = {46},
number = {8},
pages = {793-813},
abstract = {This paper is an experimental and numerical study about propagation and reflection of waves originated by natural hazards such as sea bottom movements, hill slope sliding and avalanches. One-dimensional flume experiments were conducted to study the characteristics of such waves. The results of the experimental study can be used by other researchers to verify their numerical models. A finite volume numerical model, which solves the shallow water equations, was also verified using our own experimental results. In order to deal with reflection on sloping surfaces and overtopping walls, a new condition for the treatment of the coastline is suggested. The numerical simulation of wave generation is also studied considering the bed movement. A boundary condition is proposed for this case. Those situations when the shallow water equations are valid to simulate this type of phenomena have been studied, as well as their limitations. © 2004 John Wiley & Sons, Ltd.},
note = {cited By 13},
keywords = {boundary layer; computational fluid dynamics; mathematical analysis; wave, Computer simulation; Finite volume method; Mathematical models; Reflection; Wave propagation, Hill slope sliding; Numerical models; Solitary waves, Waves},
pubstate = {published},
tppubtype = {article}
}
This paper is an experimental and numerical study about propagation and reflection of waves originated by natural hazards such as sea bottom movements, hill slope sliding and avalanches. One-dimensional flume experiments were conducted to study the characteristics of such waves. The results of the experimental study can be used by other researchers to verify their numerical models. A finite volume numerical model, which solves the shallow water equations, was also verified using our own experimental results. In order to deal with reflection on sloping surfaces and overtopping walls, a new condition for the treatment of the coastline is suggested. The numerical simulation of wave generation is also studied considering the bed movement. A boundary condition is proposed for this case. Those situations when the shallow water equations are valid to simulate this type of phenomena have been studied, as well as their limitations. © 2004 John Wiley & Sons, Ltd.
Rodríguez-Vellando-Fernández-Carvajal, Pablo; Puertas-Agudo, Jerónimo; Colominas-Ezponda, Ignasi
Resolution of the flow in clarifiers by using a stabilized finite element method Artículo de revista
En: International Journal for Numerical Methods in Fluids, vol. 44, no 2, pp. 115-133, 2004, ISSN: 02712091, (cited By 3).
Resumen | Enlaces | BibTeX | Etiquetas: Approximation theory; Catchments; Creep; Finite element method; Navier Stokes equations; Product design; Vortex flow; Wastewater, clarifier; finite element method; flow mechanics; incompressible flow; Navier-Stokes equations; wastewater treatment, Complex stability problems, Flow of fluids
@article{Rodriguez-Vellando2004115,
title = {Resolution of the flow in clarifiers by using a stabilized finite element method},
author = {Pablo Rodríguez-Vellando-Fernández-Carvajal and Jerónimo Puertas-Agudo and Ignasi Colominas-Ezponda},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0347093153&doi=10.1002%2ffld.617&partnerID=40&md5=8d925df2252897926a43f13b35ffe730},
doi = {10.1002/fld.617},
issn = {02712091},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {International Journal for Numerical Methods in Fluids},
volume = {44},
number = {2},
pages = {115-133},
abstract = {The description of the flow that takes place in clarifiers and other wastewater treatment basins may be a powerful tool to attain an optimum design of these structures, in order to make the most of the wastewater treatment plant resources. Some authors have attempted so by making use of the potential flow or the Stokes equations. When these simplifications are used, an approximation of the flow for slow creeping conditions is obtained, but only the resolution of the all-term-including Navier-Stokes equations will allow us to detect the real streamlines and the vortices that show up for even very slow water flows. The use of the Navier-Stokes formulae as the governing equations involves the appearance of complex stability problems that do not show up for the previously mentioned simplifications. In the present work a stable finite element method for the resolution of the Navier-Stokes equations is presented, verified, and used in the resolution of some wastewater treatment flow problems with very interesting results. © 2004 John Wiley and Sons, Ltd.},
note = {cited By 3},
keywords = {Approximation theory; Catchments; Creep; Finite element method; Navier Stokes equations; Product design; Vortex flow; Wastewater, clarifier; finite element method; flow mechanics; incompressible flow; Navier-Stokes equations; wastewater treatment, Complex stability problems, Flow of fluids},
pubstate = {published},
tppubtype = {article}
}
The description of the flow that takes place in clarifiers and other wastewater treatment basins may be a powerful tool to attain an optimum design of these structures, in order to make the most of the wastewater treatment plant resources. Some authors have attempted so by making use of the potential flow or the Stokes equations. When these simplifications are used, an approximation of the flow for slow creeping conditions is obtained, but only the resolution of the all-term-including Navier-Stokes equations will allow us to detect the real streamlines and the vortices that show up for even very slow water flows. The use of the Navier-Stokes formulae as the governing equations involves the appearance of complex stability problems that do not show up for the previously mentioned simplifications. In the present work a stable finite element method for the resolution of the Navier-Stokes equations is presented, verified, and used in the resolution of some wastewater treatment flow problems with very interesting results. © 2004 John Wiley and Sons, Ltd.
Puertas-Agudo, Jerónimo; Pena-Mosquera, Luis; Teijeiro-Rodríguez, Teresa
Experimental approach to the hydraulics of vertical slot fishways Artículo de revista
En: Journal of Hydraulic Engineering, vol. 130, no 1, pp. 10-23, 2004, ISSN: 07339429, (cited By 111).
Resumen | Enlaces | BibTeX | Etiquetas: design; energy dissipation; fish; flow field; hydraulic structure; migration; open channel flow; turbulence, Fishways, Flow patterns; Hydraulics; Maximum likelihood estimation; Numerical methods; Turbulent flow; Velocity measurement, Kinetic turbulent energy
@article{Puertas200410,
title = {Experimental approach to the hydraulics of vertical slot fishways},
author = {Jerónimo Puertas-Agudo and Luis Pena-Mosquera and Teresa Teijeiro-Rodríguez},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1642480914&doi=10.1061%2f%28ASCE%290733-9429%282004%29130%3a1%2810%29&partnerID=40&md5=26dc0d7a40b2b23e012f77eca9380a84},
doi = {10.1061/(ASCE)0733-9429(2004)130:1(10)},
issn = {07339429},
year = {2004},
date = {2004-01-01},
urldate = {2004-01-01},
journal = {Journal of Hydraulic Engineering},
volume = {130},
number = {1},
pages = {10-23},
abstract = {The performance of two particular designs of vertical slot fishways for two different slopes was studied in a wide range of discharges. Water depths were measured in almost the whole surface of pools. A linear relation between dimensionless discharge and depth of flow, and the same flow patterns for each design were found. With an acoustic Doppler velocimeter, three-dimensional velocities were measured at several levels in the entire pool to detect the structure of the flow and quantify velocity distribution. Two different regions in flow patterns were found: a direct flow region characterized by maximum velocities; and a recirculation region, defined by low velocities and horizontal eddies. For a given slope, the velocity at any point of the pool (particularly at the slot) may be considered independent of the discharge and constant with the depth. Some suggestions on kinetic turbulent energy are also made.},
note = {cited By 111},
keywords = {design; energy dissipation; fish; flow field; hydraulic structure; migration; open channel flow; turbulence, Fishways, Flow patterns; Hydraulics; Maximum likelihood estimation; Numerical methods; Turbulent flow; Velocity measurement, Kinetic turbulent energy},
pubstate = {published},
tppubtype = {article}
}
The performance of two particular designs of vertical slot fishways for two different slopes was studied in a wide range of discharges. Water depths were measured in almost the whole surface of pools. A linear relation between dimensionless discharge and depth of flow, and the same flow patterns for each design were found. With an acoustic Doppler velocimeter, three-dimensional velocities were measured at several levels in the entire pool to detect the structure of the flow and quantify velocity distribution. Two different regions in flow patterns were found: a direct flow region characterized by maximum velocities; and a recirculation region, defined by low velocities and horizontal eddies. For a given slope, the velocity at any point of the pool (particularly at the slot) may be considered independent of the discharge and constant with the depth. Some suggestions on kinetic turbulent energy are also made.
2003
Dorado, Julián; Rabuñal-Dopico, Juan R.; Pazos, Alejandro; Rivero, Daniel; Santos, Antonino; Puertas-Agudo, Jerónimo
Prediction and modeling of the rainfall-runoff transformation of a typical urban basin using ann and gp Artículo de revista
En: Applied Artificial Intelligence, vol. 17, no 4, pp. 329-343, 2003, ISSN: 08839514, (cited By 75).
Resumen | Enlaces | BibTeX | Etiquetas: Artificial intelligence, Genetic programming; Runoff flow; Stochastic methods, Hydrology; Mathematical models; Mathematical programming; Neural networks; Rain; Runoff; Statistical methods
@article{Dorado2003329,
title = {Prediction and modeling of the rainfall-runoff transformation of a typical urban basin using ann and gp},
author = {Julián Dorado and Juan R. Rabuñal-Dopico and Alejandro Pazos and Daniel Rivero and Antonino Santos and Jerónimo Puertas-Agudo},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0242415241&doi=10.1080%2f713827142&partnerID=40&md5=6ef91bd35fce5eeb4013706374efb950},
doi = {10.1080/713827142},
issn = {08839514},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {Applied Artificial Intelligence},
volume = {17},
number = {4},
pages = {329-343},
abstract = {This paper proposes an application of Genetic Programming (GP) and Artificial Neural Networks (ANN) in hydrology, showing how these two techniques can work together to solve a problem, namely for modeling the effect of rain on the runoff flow in a typical urban basin. The ultimate goal of this research is to design a real-time alarm system to warn of floods or subsidence in various types of urban basins. Results look promising and appear to offer some improvement for analyzing river basin systems over stochastic methods such as unitary hydrographs. © 2003 Taylor and Francis Group, LLC.},
note = {cited By 75},
keywords = {Artificial intelligence, Genetic programming; Runoff flow; Stochastic methods, Hydrology; Mathematical models; Mathematical programming; Neural networks; Rain; Runoff; Statistical methods},
pubstate = {published},
tppubtype = {article}
}
This paper proposes an application of Genetic Programming (GP) and Artificial Neural Networks (ANN) in hydrology, showing how these two techniques can work together to solve a problem, namely for modeling the effect of rain on the runoff flow in a typical urban basin. The ultimate goal of this research is to design a real-time alarm system to warn of floods or subsidence in various types of urban basins. Results look promising and appear to offer some improvement for analyzing river basin systems over stochastic methods such as unitary hydrographs. © 2003 Taylor and Francis Group, LLC.
Rabuñal-Dopico, Juan R.; Dorado, Julián; Pazos, Alejandro; Rivero, Daniel
Rules and generalization capacity extraction from ANN with GP Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2686, pp. 606-613, 2003, ISSN: 03029743, (cited By 4).
Resumen | Enlaces | BibTeX | Etiquetas: Activation functions; Generalization capacity; Human being; Rule discovery, Genetic algorithms; Neural networks, Genetic programming
@article{Rabuñal2003606,
title = {Rules and generalization capacity extraction from ANN with GP},
author = {Juan R. Rabuñal-Dopico and Julián Dorado and Alejandro Pazos and Daniel Rivero},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892514004&doi=10.1007%2f3-540-44868-3_77&partnerID=40&md5=20e6d89e19aa827cef94bad605778307},
doi = {10.1007/3-540-44868-3_77},
issn = {03029743},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {2686},
pages = {606-613},
publisher = {Springer Verlag},
abstract = {Different techniques for extracting Artificial Neural Networks (ANN) rules have been used up to the present time, but most of them have focused on certain types of networks and their training. However, there are practically no methods which deal with ANN rule-discovery as systems that are independent from their architecture, training, and internal distribution of weights, connections, and activation functions. This paper proposes a method based on Genetic Programming (GP) with the purpose of achieving the generalization capacity characteristic of ANNs, by means of symbolic rules which can be understood by human beings. © Springer-Verlag Berlin Heidelberg 2003.},
note = {cited By 4},
keywords = {Activation functions; Generalization capacity; Human being; Rule discovery, Genetic algorithms; Neural networks, Genetic programming},
pubstate = {published},
tppubtype = {article}
}
Different techniques for extracting Artificial Neural Networks (ANN) rules have been used up to the present time, but most of them have focused on certain types of networks and their training. However, there are practically no methods which deal with ANN rule-discovery as systems that are independent from their architecture, training, and internal distribution of weights, connections, and activation functions. This paper proposes a method based on Genetic Programming (GP) with the purpose of achieving the generalization capacity characteristic of ANNs, by means of symbolic rules which can be understood by human beings. © Springer-Verlag Berlin Heidelberg 2003.
Rivero, Daniel; Vidal, Rafael; Dorado, Julián; Rabuñal-Dopico, Juan R.; Pazos, Alejandro
Restoration of old documents with genetic algorithms Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2611, pp. 432-443, 2003, ISSN: 03029743, (cited By 1).
Resumen | Enlaces | BibTeX | Etiquetas: Algorithms; Genetic algorithms; Image processing; Image recognition; Ionization of gases, Genetic algorithm (GAs); Image processing technique; Old documents; Real-world, Problem solving
@article{Rivero2003432,
title = {Restoration of old documents with genetic algorithms},
author = {Daniel Rivero and Rafael Vidal and Julián Dorado and Juan R. Rabuñal-Dopico and Alejandro Pazos},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-35248882954&doi=10.1007%2f3-540-36605-9_40&partnerID=40&md5=bff2506fdd3c2dc8352adf45102bad17},
doi = {10.1007/3-540-36605-9_40},
issn = {03029743},
year = {2003},
date = {2003-01-01},
urldate = {2003-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {2611},
pages = {432-443},
publisher = {Springer Verlag},
abstract = {Image recognition is a problem present in many real-world applications. In this paper we present an application of genetic algorithms (GAs) to solve one of those problems: the recovery of a deteriorated old document from the damages caused by centuries. This problem is particularly hard because these documents are affected by many aggresive agents, mainly by the humidity caused by a wrong storage during many years. This makes this problem unaffordable by other image processing techniques, but results show how GAs can succesfully solve this problem. © Springer-Verlag Berlin Heidelberg 2003.},
note = {cited By 1},
keywords = {Algorithms; Genetic algorithms; Image processing; Image recognition; Ionization of gases, Genetic algorithm (GAs); Image processing technique; Old documents; Real-world, Problem solving},
pubstate = {published},
tppubtype = {article}
}
Image recognition is a problem present in many real-world applications. In this paper we present an application of genetic algorithms (GAs) to solve one of those problems: the recovery of a deteriorated old document from the damages caused by centuries. This problem is particularly hard because these documents are affected by many aggresive agents, mainly by the humidity caused by a wrong storage during many years. This makes this problem unaffordable by other image processing techniques, but results show how GAs can succesfully solve this problem. © Springer-Verlag Berlin Heidelberg 2003.
2002
Puertas-Agudo, Jerónimo; Dolz, José
Pressure fields due to the impingement of free falling jets on a riverbed Book Section
En: Rock Scour Due to Falling High-Velocity Jets, CRC Press, 2002, (Num Pages: 10).
@incollection{puertas_pressure_2002,
title = {Pressure fields due to the impingement of free falling jets on a riverbed},
author = {Jerónimo Puertas-Agudo and José Dolz},
year = {2002},
date = {2002-01-01},
urldate = {2002-01-01},
booktitle = {Rock Scour Due to Falling High-Velocity Jets},
publisher = {CRC Press},
abstract = {Free overflow spillways are commonly used in arch dams. The jet gains velocity as it falls, and it can generate a big impact over the rock downstream the dam. To avoid this, plunge pools are usually constructed in order to absorb a certain amount of the energy and to spread the jet. The more compact the jet is, the more severe is the impact it can generate. Some experiments have been done in order to evaluate the pressure fields over the plugeplunge pool floor. The energy dissipation due to the flight in the atmosphere has not been taken into account in most of these tests. This paper presents some results about the pressure field one can expect in these effects are considered.},
note = {Num Pages: 10},
keywords = {},
pubstate = {published},
tppubtype = {incollection}
}
Free overflow spillways are commonly used in arch dams. The jet gains velocity as it falls, and it can generate a big impact over the rock downstream the dam. To avoid this, plunge pools are usually constructed in order to absorb a certain amount of the energy and to spread the jet. The more compact the jet is, the more severe is the impact it can generate. Some experiments have been done in order to evaluate the pressure fields over the plugeplunge pool floor. The energy dissipation due to the flight in the atmosphere has not been taken into account in most of these tests. This paper presents some results about the pressure field one can expect in these effects are considered.
Dorado, Julián; Rabuñal-Dopico, Juan R.; Santos, Antonino; Pazos, Alejandro; Rivero, Daniel
Automatic recurrent and feed-forward ANN rule and expression extraction with genetic programming Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2439, pp. 485-494, 2002, ISSN: 03029743, (cited By 4).
Resumen | Enlaces | BibTeX | Etiquetas: Activation functions; Exploration techniques; Extraction method; Feed forward; Rule extraction, Extraction; Genetic algorithms; Network architecture, Genetic programming
@article{Dorado2002485,
title = {Automatic recurrent and feed-forward ANN rule and expression extraction with genetic programming},
author = {Julián Dorado and Juan R. Rabuñal-Dopico and Antonino Santos and Alejandro Pazos and Daniel Rivero},
editor = {Beyer H. -G. Adamidis P. Guervos J.J.M.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944323399&doi=10.1007%2f3-540-45712-7_47&partnerID=40&md5=6f8705235a670ee033f772d4be4cefc9},
doi = {10.1007/3-540-45712-7_47},
issn = {03029743},
year = {2002},
date = {2002-01-01},
urldate = {2002-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {2439},
pages = {485-494},
publisher = {Springer Verlag},
abstract = {Various rule-extraction techniques using ANN have been used so far, most of them being applied on multi-layer ANN, since they are more easily handled. In many cases, extraction methods focusing on different types of networks and training have been implemented. However, there are virtually no methods that view the extraction of rules from ANN as systems which are independent from their architecture, training and internal distribution of weights, connections and activation functions. This paper proposes a ruleextraction system of ANN regardless of their architecture (multi-layer or recurrent), using Genetic Programming as a rule-exploration technique. © Springer-Verlag Berlin Heidelberg 2002.},
note = {cited By 4},
keywords = {Activation functions; Exploration techniques; Extraction method; Feed forward; Rule extraction, Extraction; Genetic algorithms; Network architecture, Genetic programming},
pubstate = {published},
tppubtype = {article}
}
Various rule-extraction techniques using ANN have been used so far, most of them being applied on multi-layer ANN, since they are more easily handled. In many cases, extraction methods focusing on different types of networks and training have been implemented. However, there are virtually no methods that view the extraction of rules from ANN as systems which are independent from their architecture, training and internal distribution of weights, connections and activation functions. This paper proposes a ruleextraction system of ANN regardless of their architecture (multi-layer or recurrent), using Genetic Programming as a rule-exploration technique. © Springer-Verlag Berlin Heidelberg 2002.
Dorado, Julián; Rabuñal-Dopico, Juan R.; Puertas-Agudo, Jerónimo; Santos, Antonino; Rivero, Daniel
Prediction and modelling of the flow of a typical urban basin through genetic programming Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2279 LNCS, pp. 190-201, 2002, ISSN: 03029743, (cited By 14).
Resumen | Enlaces | BibTeX | Etiquetas: Alarm systems; Combinatorial optimization; Genetic algorithms; Signal processing; Stochastic systems; Computer programming, Evolutionary method; Exact solution; Real-time alarm; River basins; Stochastic methods; Typical urban, Genetic programming
@article{Dorado2002190,
title = {Prediction and modelling of the flow of a typical urban basin through genetic programming},
author = {Julián Dorado and Juan R. Rabuñal-Dopico and Jerónimo Puertas-Agudo and Antonino Santos and Daniel Rivero},
editor = {Cagnoni S.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-44349112109&doi=10.1007%2f3-540-46004-7_20&partnerID=40&md5=1b562aeac3402bc60dc76a49a52901e6},
doi = {10.1007/3-540-46004-7_20},
issn = {03029743},
year = {2002},
date = {2002-01-01},
urldate = {2002-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {2279 LNCS},
pages = {190-201},
publisher = {Springer Verlag},
abstract = {Genetic Programming (GP) is an evolutionary method that creates computer programs that represent approximate or exact solutions to a problem. This paper proposes an application of GP in hydrology, namely for modelling the effect of rain on the run-off flow in a typical urban basin. The ultimate goal of this research is to design a real time alarm system to warn of floods or subsidence in various types of urban basin. Results look promising and appear to offer some improvement over stochastic methods for analysing river basin systems such as unitary radiographs. © Springer-Verlag Berlin Heidelberg 2002.},
note = {cited By 14},
keywords = {Alarm systems; Combinatorial optimization; Genetic algorithms; Signal processing; Stochastic systems; Computer programming, Evolutionary method; Exact solution; Real-time alarm; River basins; Stochastic methods; Typical urban, Genetic programming},
pubstate = {published},
tppubtype = {article}
}
Genetic Programming (GP) is an evolutionary method that creates computer programs that represent approximate or exact solutions to a problem. This paper proposes an application of GP in hydrology, namely for modelling the effect of rain on the run-off flow in a typical urban basin. The ultimate goal of this research is to design a real time alarm system to warn of floods or subsidence in various types of urban basin. Results look promising and appear to offer some improvement over stochastic methods for analysing river basin systems such as unitary radiographs. © Springer-Verlag Berlin Heidelberg 2002.
Dorado, Julián; Rabuñal-Dopico, Juan R.; Rivero, Daniel; Santos, Antonino; Pazos, Alejandro
Automatic recurrent ANN rule extraction with genetic programming Conferencia
vol. 2, 2002, (cited By 9).
Resumen | Enlaces | BibTeX | Etiquetas: Genetic programming; Rule extraction system, Knowledge based systems; Logic programming; Multilayer neural networks; Optimization; Problem solving, Recurrent neural networks
@conference{Dorado20021552,
title = {Automatic recurrent ANN rule extraction with genetic programming},
author = {Julián Dorado and Juan R. Rabuñal-Dopico and Daniel Rivero and Antonino Santos and Alejandro Pazos},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036082883&partnerID=40&md5=e47c43ee1c048a5b3988707bae59a765},
year = {2002},
date = {2002-01-01},
urldate = {2002-01-01},
journal = {Proceedings of the International Joint Conference on Neural Networks},
volume = {2},
pages = {1552-1557},
abstract = {Various rule-extraction techniques using ANNs have been used so far, most of them being applied on multi-layer ANNs, since they are more easily handled. In many cases, extraction methods focusing on different types of networks and training have been implemented, however, there are virtually no methods that view the extraction of rules from ANNs as systems which are independent from their architecture, training and internal distribution of weights, connections and activation functions. This paper proposes a rule-extraction system of ANNs regardless of their architecture (multi-layer or recurrent), using Genetic programming as a rule-exploration technique.},
note = {cited By 9},
keywords = {Genetic programming; Rule extraction system, Knowledge based systems; Logic programming; Multilayer neural networks; Optimization; Problem solving, Recurrent neural networks},
pubstate = {published},
tppubtype = {conference}
}
Various rule-extraction techniques using ANNs have been used so far, most of them being applied on multi-layer ANNs, since they are more easily handled. In many cases, extraction methods focusing on different types of networks and training have been implemented, however, there are virtually no methods that view the extraction of rules from ANNs as systems which are independent from their architecture, training and internal distribution of weights, connections and activation functions. This paper proposes a rule-extraction system of ANNs regardless of their architecture (multi-layer or recurrent), using Genetic programming as a rule-exploration technique.
Rodríguez-Vellando-Fernández-Carvajal, Pablo; Puertas-Agudo, Jerónimo; Colominas-Ezponda, Ignasi
SUPG stabilized finite element resolution of the Navier-Stokes equations. Applications to water treatment engineering Artículo de revista
En: Computer Methods in Applied Mechanics and Engineering, vol. 191, no 51-52, pp. 5899-5922, 2002, ISSN: 00457825, (cited By 11).
Resumen | Enlaces | BibTeX | Etiquetas: Computer aided engineering, finite element analysis; incompressible flow; Navier-Stokes equations; viscous flow; wastewater treatment, Finite element method; Navier Stokes equations; Open channel flow; Water treatment, Viscous incompressible flow
@article{Vellando20025899,
title = {SUPG stabilized finite element resolution of the Navier-Stokes equations. Applications to water treatment engineering},
author = {Pablo Rodríguez-Vellando-Fernández-Carvajal and Jerónimo Puertas-Agudo and Ignasi Colominas-Ezponda},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037147390&doi=10.1016%2fS0045-7825%2802%2900503-0&partnerID=40&md5=4e5cb2dbce7bffec0827e55179a87af4},
doi = {10.1016/S0045-7825(02)00503-0},
issn = {00457825},
year = {2002},
date = {2002-01-01},
urldate = {2002-01-01},
journal = {Computer Methods in Applied Mechanics and Engineering},
volume = {191},
number = {51-52},
pages = {5899-5922},
abstract = {In this paper an analysis of the viscous incompressible flow has been carried out, from the very definition of the governing equations, up to the resolution of some practical problems, passing through the comprehensive study of the stabilized finite element techniques used in their resolution. As a consequence of this analysis, a code based upon a realistic interpretation of the forces has been written, which allows for the modelling of the open channel flow, with optimum results in the resolution of some benchmark and real flow problems related with the wastewater industry. © 2002 Elsevier Science Ltd. All rights reserved.},
note = {cited By 11},
keywords = {Computer aided engineering, finite element analysis; incompressible flow; Navier-Stokes equations; viscous flow; wastewater treatment, Finite element method; Navier Stokes equations; Open channel flow; Water treatment, Viscous incompressible flow},
pubstate = {published},
tppubtype = {article}
}
In this paper an analysis of the viscous incompressible flow has been carried out, from the very definition of the governing equations, up to the resolution of some practical problems, passing through the comprehensive study of the stabilized finite element techniques used in their resolution. As a consequence of this analysis, a code based upon a realistic interpretation of the forces has been written, which allows for the modelling of the open channel flow, with optimum results in the resolution of some benchmark and real flow problems related with the wastewater industry. © 2002 Elsevier Science Ltd. All rights reserved.
Martinez-Abella, Fernando; Vázquez-Herrero, Cristina
Transfer length of high performance pretensioned concrete elements Artículo de revista
En: High Performance Structures and Materials, vol. 4, pp. 309-318, 2002, ISSN: 14690071, (cited By 0).
Resumen | Enlaces | BibTeX | Etiquetas: Bond (masonry); Concrete additives; Crack initiation; Epoxy resins; Mathematical models; Numerical methods; Reinforced concrete; Weighing, Concrete elements; Concrete prisms; Pretensioned beams; Transfer length, Prestressed concrete
@article{Martinez-Abella2002309,
title = {Transfer length of high performance pretensioned concrete elements},
author = {Fernando Martinez-Abella and Cristina Vázquez-Herrero},
editor = {Wilde W. P. Brebbia C.A.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-4544377771&partnerID=40&md5=937414de2a1e15f7ae8184d7c2d6ec20},
issn = {14690071},
year = {2002},
date = {2002-01-01},
urldate = {2002-01-01},
journal = {High Performance Structures and Materials},
volume = {4},
pages = {309-318},
abstract = {The scope of this research was to study the feasibility of producing high strength lightweight concrete pretensioned beams, with the same design criteria as normalweight high strength concrete, with 15.2 mm diameter strand. This paper reports an experimental program conducted to measure bond properties of two lightweight concrete dosages compared to those of a reference normal weight high strength concrete, used in a prestressing plant to produce great pretensioned beams. As a part of the research, eight specimens (prisms) were pretensioned with a 15.2 mm diameter strand centered in the cross section, without confinement reinforcement. Experimental results show that none of the prisms cracked right after transfer, which seems to guarantee that adopted strand cover, 45 mm, is enough for lightweight concrete prisms. However, some time after transfer deferred longitudinal cracking was observed in all the lightweight concrete prisms, and a considerable increase of transfer length was detected. Also a new objective method has been developed to determine transfer length from longitudinal concrete strains at strand depth.},
note = {cited By 0},
keywords = {Bond (masonry); Concrete additives; Crack initiation; Epoxy resins; Mathematical models; Numerical methods; Reinforced concrete; Weighing, Concrete elements; Concrete prisms; Pretensioned beams; Transfer length, Prestressed concrete},
pubstate = {published},
tppubtype = {article}
}
The scope of this research was to study the feasibility of producing high strength lightweight concrete pretensioned beams, with the same design criteria as normalweight high strength concrete, with 15.2 mm diameter strand. This paper reports an experimental program conducted to measure bond properties of two lightweight concrete dosages compared to those of a reference normal weight high strength concrete, used in a prestressing plant to produce great pretensioned beams. As a part of the research, eight specimens (prisms) were pretensioned with a 15.2 mm diameter strand centered in the cross section, without confinement reinforcement. Experimental results show that none of the prisms cracked right after transfer, which seems to guarantee that adopted strand cover, 45 mm, is enough for lightweight concrete prisms. However, some time after transfer deferred longitudinal cracking was observed in all the lightweight concrete prisms, and a considerable increase of transfer length was detected. Also a new objective method has been developed to determine transfer length from longitudinal concrete strains at strand depth.
2001
Dorado, Julián; Santos, Antonino; Rabuñal-Dopico, Juan R.
Multilevel genetic algorithm for the complete development of ANN Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2084 LNCS, no PART 1, pp. 717-724, 2001, ISSN: 03029743, (cited By 2).
Resumen | Enlaces | BibTeX | Etiquetas: Active area; Design process; Design tasks; Evaluation function; Multi-level genetic algorithms; Open platforms; Training process, Genetic algorithms, Neural networks; Algorithms; Artificial intelligence; Design
@article{Dorado2001717,
title = {Multilevel genetic algorithm for the complete development of ANN},
author = {Julián Dorado and Antonino Santos and Juan R. Rabuñal-Dopico},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902152787&doi=10.1007%2f3-540-45720-8_86&partnerID=40&md5=c2152ad9b7f8ee0a7cc2f1cfeb387d84},
doi = {10.1007/3-540-45720-8_86},
issn = {03029743},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {2084 LNCS},
number = {PART 1},
pages = {717-724},
publisher = {Springer Verlag},
abstract = {The utilization of Genetic Algorithms (GA) in the development of Artificial Neural Networks is a very active area of investigation. The works that are being carried out at present not only focus on the adjustment of the weights of the connections, but also they tend, more and more, to the development of systems which realize tasks of design and training, in parallel. To cover these necessities and, as an open platform for new developments, in this article it is shown a multilevel GA architecture which establishes a difference between the design and the training tasks. In this system, the design tasks are performed in a parallel way, by using different machines. Each design process has associated a training process as an evaluation function. Every design GA interchanges solutions in such a way that they help one each other towards the best solution working in a cooperative way during the simulation. © Springer-Verlag Berlin Heidelberg 2001.},
note = {cited By 2},
keywords = {Active area; Design process; Design tasks; Evaluation function; Multi-level genetic algorithms; Open platforms; Training process, Genetic algorithms, Neural networks; Algorithms; Artificial intelligence; Design},
pubstate = {published},
tppubtype = {article}
}
The utilization of Genetic Algorithms (GA) in the development of Artificial Neural Networks is a very active area of investigation. The works that are being carried out at present not only focus on the adjustment of the weights of the connections, but also they tend, more and more, to the development of systems which realize tasks of design and training, in parallel. To cover these necessities and, as an open platform for new developments, in this article it is shown a multilevel GA architecture which establishes a difference between the design and the training tasks. In this system, the design tasks are performed in a parallel way, by using different machines. Each design process has associated a training process as an evaluation function. Every design GA interchanges solutions in such a way that they help one each other towards the best solution working in a cooperative way during the simulation. © Springer-Verlag Berlin Heidelberg 2001.
Dorado, Julián; Santos, Antonino; Rabuñal-Dopico, Juan R.; Pedreira, Nieves; Pazos, Alejandro
Hybrid two-population genetic algorithm Artículo de revista
En: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2206 LNCS, pp. 464-470, 2001, ISSN: 03029743, (cited By 2).
Resumen | Enlaces | BibTeX | Etiquetas: Adaptive methods; Constant time; Evolutionary techniques; Natural evolution; Satisfactory solutions; Search method; Search spaces; Stochastic search, Artificial intelligence; Genetic algorithms; Stochastic systems; Computation theory; Evolutionary algorithms, Computation theory; Algorithms
@article{Dorado2001464,
title = {Hybrid two-population genetic algorithm},
author = {Julián Dorado and Antonino Santos and Juan R. Rabuñal-Dopico and Nieves Pedreira and Alejandro Pazos},
editor = {Reusch B.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84867066087&doi=10.1007%2f3-540-45493-4_47&partnerID=40&md5=d9e48c81fd1fd1b7c952782e0e512d32},
doi = {10.1007/3-540-45493-4_47},
issn = {03029743},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {2206 LNCS},
pages = {464-470},
publisher = {Springer Verlag},
abstract = {Genetic Algorithms are non-deterministic, stochastic-search adaptive methods which use the theories of natural evolution and selection in order to solve a problem within a complex range of possible solutions. The aim is to control the distribution of the search space by incorporating an exhaustive method in order to maintain a constant evolution of the population. The main goal is that of redesigning the algorithm in order to add to the classic genetic algorithm method those characteristics which favour exhaustive search methods. The method explained guarantees the achievement of reasonably satisfactory solutions in short time-spans and in a deterministic way, which entails that successive repetitions of the algorithm will achieve the same solutions in almost constant time-spans. We are, therefore, dealing with an evolutionary technique which makes the most of the characteristics of genetic algorithms and exhaustive methods. © Springer-Verlag 2001.},
note = {cited By 2},
keywords = {Adaptive methods; Constant time; Evolutionary techniques; Natural evolution; Satisfactory solutions; Search method; Search spaces; Stochastic search, Artificial intelligence; Genetic algorithms; Stochastic systems; Computation theory; Evolutionary algorithms, Computation theory; Algorithms},
pubstate = {published},
tppubtype = {article}
}
Genetic Algorithms are non-deterministic, stochastic-search adaptive methods which use the theories of natural evolution and selection in order to solve a problem within a complex range of possible solutions. The aim is to control the distribution of the search space by incorporating an exhaustive method in order to maintain a constant evolution of the population. The main goal is that of redesigning the algorithm in order to add to the classic genetic algorithm method those characteristics which favour exhaustive search methods. The method explained guarantees the achievement of reasonably satisfactory solutions in short time-spans and in a deterministic way, which entails that successive repetitions of the algorithm will achieve the same solutions in almost constant time-spans. We are, therefore, dealing with an evolutionary technique which makes the most of the characteristics of genetic algorithms and exhaustive methods. © Springer-Verlag 2001.
Cagiao, Juan; Puertas-Agudo, Jerónimo; López, S.; Suárez-López, Joaquín
2001, ISBN: 0784405832, (cited By 0).
Resumen | Enlaces | BibTeX | Etiquetas: Catchments; Contamination; Data acquisition; Hydrology; Mathematical models; Problem solving, Correlation analysis; Pollutants; Urban sewer network, Hydraulics
@conference{Cagiao2001824,
title = {Quality aspects & behaviour of the CSO pollutants in the city of Santiago de Compostela - North West of Spain},
author = {Juan Cagiao and Jerónimo Puertas-Agudo and S. López and Joaquín Suárez-López},
editor = {Brashear R W Maksimovic C Brashear R W},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035769932&partnerID=40&md5=9f62f632eac6643b3d28aecd32e943ec},
isbn = {0784405832},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Urban Drainage Modeling},
pages = {824-833},
abstract = {The results of the fieldwork conducted in the catchment "El Ensanche" located in the city of Santiago de Compostela are presented. In addition, it provides a preliminary analysis of the data collected. This paper aims to first carry out a hydraulic analysis and examine the contamination discharged by the occurrence of the CSO's sampled, and secondly to calibrate and validate the hydrological and quality models of the catchment under study.},
note = {cited By 0},
keywords = {Catchments; Contamination; Data acquisition; Hydrology; Mathematical models; Problem solving, Correlation analysis; Pollutants; Urban sewer network, Hydraulics},
pubstate = {published},
tppubtype = {conference}
}
The results of the fieldwork conducted in the catchment "El Ensanche" located in the city of Santiago de Compostela are presented. In addition, it provides a preliminary analysis of the data collected. This paper aims to first carry out a hydraulic analysis and examine the contamination discharged by the occurrence of the CSO's sampled, and secondly to calibrate and validate the hydrological and quality models of the catchment under study.
Suárez-López, Joaquín; Cagiao, Juan; Vázquez, F.; Díaz-Fierros-Viqueira, Francisco; Puertas-Agudo, Jerónimo
2001, ISBN: 0784405832, (cited By 1).
Resumen | Enlaces | BibTeX | Etiquetas: Catchments, Contamination; Hydraulics; Mathematical models; Problem solving; Rain; Water analysis; Water pollution control; Water quality, Hydraulic analysis; Pollutants; Quality aspects; Quality behavior; Separative catchment
@conference{Suárez2001884,
title = {Quality aspects & behaviour of the pollutants in a separative catchment in the city of Santiago de Compostela},
author = {Joaquín Suárez-López and Juan Cagiao and F. Vázquez and Francisco Díaz-Fierros-Viqueira and Jerónimo Puertas-Agudo},
editor = {Brashear R W Maksimovic C Brashear R W},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035769920&partnerID=40&md5=3717059285e14313aed720ee10747a54},
isbn = {0784405832},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Urban Drainage Modeling},
pages = {884-887},
abstract = {The first results of the fieldwork conducted in the catchment "Fontinas" located in the city of Santiago de Compostela are presented. The objectives of this fieldwork is twofold: firstly, to carry out a hydraulic analysis and evaluate the contamination discharged by the occurrence of the rainfall events, and secondly to calibrate and validate the hydrological and quality models of the catchment under study. This paper aims to show the parameters analyzed in the 10 events examined in the catchment "Fontinas", Santiago de Compostela.},
note = {cited By 1},
keywords = {Catchments, Contamination; Hydraulics; Mathematical models; Problem solving; Rain; Water analysis; Water pollution control; Water quality, Hydraulic analysis; Pollutants; Quality aspects; Quality behavior; Separative catchment},
pubstate = {published},
tppubtype = {conference}
}
The first results of the fieldwork conducted in the catchment "Fontinas" located in the city of Santiago de Compostela are presented. The objectives of this fieldwork is twofold: firstly, to carry out a hydraulic analysis and evaluate the contamination discharged by the occurrence of the rainfall events, and secondly to calibrate and validate the hydrological and quality models of the catchment under study. This paper aims to show the parameters analyzed in the 10 events examined in the catchment "Fontinas", Santiago de Compostela.
Álvarez-Enjo, Manuel; Puertas-Agudo, Jerónimo; Díaz-Fierros-Viqueira, Francisco
Regional flood analysis at the Atlantic coast of Galicia, northwest of Spain [Anĺisis regional de avenidas en la zona atlántica de galicia, noroeste de España] Artículo de revista
En: Ingenieria Hidraulica en Mexico, vol. 16, no 2, pp. 67-76, 2001, ISSN: 01864076, (cited By 1).
Resumen | Enlaces | BibTeX | Etiquetas: Catchments; Climatology; Floods; Hydrology; Rivers, Flood frequency, flood frequency; homogeneity; hydrology; statistical analysis, flood frequency; hydrology; statistical analysis, Hydraulics, Spain
@article{ÁlvarezEnjo200167,
title = {Regional flood analysis at the Atlantic coast of Galicia, northwest of Spain [Anĺisis regional de avenidas en la zona atlántica de galicia, noroeste de España]},
author = {Manuel Álvarez-Enjo and Jerónimo Puertas-Agudo and Francisco Díaz-Fierros-Viqueira},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034980347&partnerID=40&md5=219095030add0df13635a64544be98f2},
issn = {01864076},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Ingenieria Hidraulica en Mexico},
volume = {16},
number = {2},
pages = {67-76},
abstract = {This paper includes a regional flood frequency analysis within an area above 8,000 km 2, located in the northwest of Spain, in the Atlantic coast of the Autonomous Community of Galicia, known as "Rías Baixas ". The index flood method was used together with the General Extreme Value distribution adjusted to the region by the method of Probability Weighted Moments. The region's water homogeneity has been verified by measuring discharges of several regional rivers for the last three years. Homogeneity has also been demonstrated by applying the statistical regional homogeneity test. The basin area has proved a good variable to predict the mean annual flood in catchments where hydrologic information is scarce. The obtained regional flood frequency curve was compared with the curves developed for other humid worldwide regions with similar climatological characteristics. The developed method constituted a good tool for the estimation and analysis of frequency of extreme floods in the Galician region of Rías Baixas.},
note = {cited By 1},
keywords = {Catchments; Climatology; Floods; Hydrology; Rivers, Flood frequency, flood frequency; homogeneity; hydrology; statistical analysis, flood frequency; hydrology; statistical analysis, Hydraulics, Spain},
pubstate = {published},
tppubtype = {article}
}
This paper includes a regional flood frequency analysis within an area above 8,000 km 2, located in the northwest of Spain, in the Atlantic coast of the Autonomous Community of Galicia, known as "Rías Baixas ". The index flood method was used together with the General Extreme Value distribution adjusted to the region by the method of Probability Weighted Moments. The region's water homogeneity has been verified by measuring discharges of several regional rivers for the last three years. Homogeneity has also been demonstrated by applying the statistical regional homogeneity test. The basin area has proved a good variable to predict the mean annual flood in catchments where hydrologic information is scarce. The obtained regional flood frequency curve was compared with the curves developed for other humid worldwide regions with similar climatological characteristics. The developed method constituted a good tool for the estimation and analysis of frequency of extreme floods in the Galician region of Rías Baixas.
Puertas-Agudo, Jerónimo; Sánchez-Tembleque-Díaz-Pache, Félix; Suárez-López, Joaquín; Cagiao, Juan; Beneyto, María
An experimental approach to the efficiency of a first-flush tank Conferencia
ASCE - American Society of Civil Engineers, 2001, ISBN: 0784405832; 9780784405833, (cited By 0).
Enlaces | BibTeX | Etiquetas: Catchments; Computer simulation; Efficiency; Hydraulics; Mathematical models; Storm sewers; Structural design; Trace analysis; Water tanks, Dilution rules; Direct field measurements; First flush tanks; Hyetographs; Pollutant mass; Pollutographs, Water pollution control equipment
@conference{Puertas2001874,
title = {An experimental approach to the efficiency of a first-flush tank},
author = {Jerónimo Puertas-Agudo and Félix Sánchez-Tembleque-Díaz-Pache and Joaquín Suárez-López and Juan Cagiao and María Beneyto},
editor = {Maksimovic C Brashear R W},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035769537&doi=10.1061%2f40583%28275%2984&partnerID=40&md5=ccc21c2553ecc7225567582aece6d986},
doi = {10.1061/40583(275)84},
isbn = {0784405832; 9780784405833},
year = {2001},
date = {2001-01-01},
urldate = {2001-01-01},
journal = {Urban Drainage Modeling},
pages = {874-883},
publisher = {ASCE - American Society of Civil Engineers},
note = {cited By 0},
keywords = {Catchments; Computer simulation; Efficiency; Hydraulics; Mathematical models; Storm sewers; Structural design; Trace analysis; Water tanks, Dilution rules; Direct field measurements; First flush tanks; Hyetographs; Pollutant mass; Pollutographs, Water pollution control equipment},
pubstate = {published},
tppubtype = {conference}
}
2000
Rodríguez-Vellando-Fernández-Carvajal, Pablo; Puertas-Agudo, Jerónimo; Bonillo, Juan J.; Fe, Jaime
On the resolution of the viscous incompressible flow for various SUPG Finite Element formulations Conferencia
2000, ISBN: 8489925704; 9788489925700, (cited By 2).
Resumen | Enlaces | BibTeX | Etiquetas: Algorithms; Computational methods; Finite element method; Navier Stokes equations, Bench-mark problems; Differential problems; Finite element formulations; Flow past a cylinder; Navier Stokes; Numerical oscillation; SUPG; Viscous incompressible flows, Incompressible flow
@conference{Vellando2000,
title = {On the resolution of the viscous incompressible flow for various SUPG Finite Element formulations},
author = {Pablo Rodríguez-Vellando-Fernández-Carvajal and Jerónimo Puertas-Agudo and Juan J. Bonillo and Jaime Fe},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893397686&partnerID=40&md5=342c199423204192d103e1175a2359fd},
isbn = {8489925704; 9788489925700},
year = {2000},
date = {2000-01-01},
urldate = {2000-01-01},
journal = {European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000},
abstract = {A Finite Element based program has been released to solve the steady 2D Navier-Stokes equations. The mixed-variable algorithm is used as a first approach to solve the differential problem. In order to reduce the number of equations, both a penalty and segregated formulation are implemented to give solution to the viscous incompressible flow and their results are compared with the former formulation. The program makes use of a SUPG type algorithm as a stabilisation procedure, in order to eliminate the numerical oscillations, which may appear when the boundary conditions force a sudden change in the solution, without necessarily refining the mesh. The three different algorithms are checked making use of the benchmark problems of the flow in a square cavity, the backward step and the flow past a cylinder. Finally the code is used to solve the flow in some practical problems and their results are commented. © ECCOMAS.},
note = {cited By 2},
keywords = {Algorithms; Computational methods; Finite element method; Navier Stokes equations, Bench-mark problems; Differential problems; Finite element formulations; Flow past a cylinder; Navier Stokes; Numerical oscillation; SUPG; Viscous incompressible flows, Incompressible flow},
pubstate = {published},
tppubtype = {conference}
}
A Finite Element based program has been released to solve the steady 2D Navier-Stokes equations. The mixed-variable algorithm is used as a first approach to solve the differential problem. In order to reduce the number of equations, both a penalty and segregated formulation are implemented to give solution to the viscous incompressible flow and their results are compared with the former formulation. The program makes use of a SUPG type algorithm as a stabilisation procedure, in order to eliminate the numerical oscillations, which may appear when the boundary conditions force a sudden change in the solution, without necessarily refining the mesh. The three different algorithms are checked making use of the benchmark problems of the flow in a square cavity, the backward step and the flow past a cylinder. Finally the code is used to solve the flow in some practical problems and their results are commented. © ECCOMAS.
Bonillo, Juan J.; Puertas-Agudo, Jerónimo; Suárez-López, Juan Joaquín; Vázquez-Cendón, María Elena
En: Ingenieria Hidraulica en Mexico, vol. 15, no 3, pp. 47-54, 2000, ISSN: 01864076, (cited By 0).
Resumen | Enlaces | BibTeX | Etiquetas: dispersion modeling; finite element method; finite volume technique; free surface flow; model test; pollutant transport; two-dimensional flow, dispersion; finite element method; finite volume method; free surface flow; model validation; pollutant transport; two-dimensional flow
@article{Bonillo200047,
title = {Numerical and experimental sttudy of bidimensional flow and of pollutants transport on free plate [Estudio numérico y experimental del flujo bidimensional y del transporte de contaminentes en lámina libre]},
author = {Juan J. Bonillo and Jerónimo Puertas-Agudo and Juan Joaquín Suárez-López and María Elena Vázquez-Cendón},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-18844477673&partnerID=40&md5=cfd3900a7097ac5c4b4778688fb895b2},
issn = {01864076},
year = {2000},
date = {2000-01-01},
urldate = {2000-01-01},
journal = {Ingenieria Hidraulica en Mexico},
volume = {15},
number = {3},
pages = {47-54},
abstract = {This paper presents two 2D numerical models. The first one is a free surface flow model based on finite volumes method, and the second one is a pollutant transport model based on finite elements method. To validate the flow model, the velocity field has been measured in a laboratory facility. To validate the pollutant transport model, dispersion of pollutant tests have been done by the measurement of the field of concentrations. Longitudinal and transversal dispersion coefficients have been fit in order to obtain a solution of the numerical transport model which adjusts the measured date. It has been checked that the values of these coefficients are in the same magnitude order that those obtained by the expressions proposed by Elder.},
note = {cited By 0},
keywords = {dispersion modeling; finite element method; finite volume technique; free surface flow; model test; pollutant transport; two-dimensional flow, dispersion; finite element method; finite volume method; free surface flow; model validation; pollutant transport; two-dimensional flow},
pubstate = {published},
tppubtype = {article}
}
This paper presents two 2D numerical models. The first one is a free surface flow model based on finite volumes method, and the second one is a pollutant transport model based on finite elements method. To validate the flow model, the velocity field has been measured in a laboratory facility. To validate the pollutant transport model, dispersion of pollutant tests have been done by the measurement of the field of concentrations. Longitudinal and transversal dispersion coefficients have been fit in order to obtain a solution of the numerical transport model which adjusts the measured date. It has been checked that the values of these coefficients are in the same magnitude order that those obtained by the expressions proposed by Elder.
1997
Castillo, Luis G.; Puertas-Agudo, Jerónimo; Dolz, José
Pressure fluctuations on plunge pool floors Artículo de revista
En: Journal of Hydraulic Research, vol. 35, no 2, pp. 257-279, 1997, ISSN: 00221686, (cited By 115).
Resumen | Enlaces | BibTeX | Etiquetas: Air entrainment; Jets; Pressure; Settling tanks; Transport properties; Velocity, Fluid dynamics, Jet impingement; Plunge pool floors; Pressure fluctuations
@article{CASTILLO1997257,
title = {Pressure fluctuations on plunge pool floors},
author = {Luis G. Castillo and Jerónimo Puertas-Agudo and José Dolz},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030688435&doi=10.1080%2f00221689709498430&partnerID=40&md5=5081b83ef640c62ae5f450d5f3460b12},
doi = {10.1080/00221689709498430},
issn = {00221686},
year = {1997},
date = {1997-01-01},
urldate = {1997-01-01},
journal = {Journal of Hydraulic Research},
volume = {35},
number = {2},
pages = {257-279},
publisher = {International Association of Hydraulic Engineering Research},
abstract = {The paper describes the pressure fluctuation field on a plunge pool floor subjected to jet impingement. The data for both mean and fluctuating components is presented for a range of velocities, plunge length, plunge pool depths, types of outlet devices, and jet diameters. The data for circular jets are compared in detail with other data available for wide rectangular nappes and rectangular slot jets. The effect of the degree of break-up of the jet before it enters the basin and the effect of air entrainment in the plunge pool is investigated. An example is provided to demonstrate how the findings may be used in practice.},
note = {cited By 115},
keywords = {Air entrainment; Jets; Pressure; Settling tanks; Transport properties; Velocity, Fluid dynamics, Jet impingement; Plunge pool floors; Pressure fluctuations},
pubstate = {published},
tppubtype = {article}
}
The paper describes the pressure fluctuation field on a plunge pool floor subjected to jet impingement. The data for both mean and fluctuating components is presented for a range of velocities, plunge length, plunge pool depths, types of outlet devices, and jet diameters. The data for circular jets are compared in detail with other data available for wide rectangular nappes and rectangular slot jets. The effect of the degree of break-up of the jet before it enters the basin and the effect of air entrainment in the plunge pool is investigated. An example is provided to demonstrate how the findings may be used in practice.
1992
Puertas-Agudo, Jerónimo; Niñerola, Daniel; Dolz, José
Effect of reservoirs on the thermal behaviour of a river. Application to the Ebro River Conferencia
Publ by Computational Mechanics Inc, Billerica, MA, United States, 1992, ISBN: 1853121746, (cited By 0).
Resumen | Enlaces | BibTeX | Etiquetas: Dams; Mathematical models; Reservoirs (water); Thermodynamic properties, Ebro River; Thermal equilibrium; Thermal inertia, Rivers
@conference{Puertas199271,
title = {Effect of reservoirs on the thermal behaviour of a river. Application to the Ebro River},
author = {Jerónimo Puertas-Agudo and Daniel Niñerola and José Dolz},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027061807&partnerID=40&md5=bf5d10317712b9dfac58d97538c04de8},
isbn = {1853121746},
year = {1992},
date = {1992-01-01},
urldate = {1992-01-01},
pages = {71-84},
publisher = {Publ by Computational Mechanics Inc, Billerica, MA, United States},
abstract = {The existence of a dam with a large embankment capacity has an outstanding influence on the thermal equilibrium of a river. In fact, the water retained in the reservoir has an important thermal inertia; it keeps cold in summer and warm in winter, taking as a reference the temperature that the river water would have if there was no dam. Therefore, when the water starts to be drained from the dam, the process of recovery of its thermal equilibrium begins. In this study we have developed a numerical model of the thermal behaviour of the river downstream from a reservoir, which has been checked with field tests on the Ebro river. In these tests we have pointed out the main role of the reservoirs of the Mequinenza-Ribarroja-Flix system, and the main factors that determine the recovery of the equilibrium of the river downstream from the dams.},
note = {cited By 0},
keywords = {Dams; Mathematical models; Reservoirs (water); Thermodynamic properties, Ebro River; Thermal equilibrium; Thermal inertia, Rivers},
pubstate = {published},
tppubtype = {conference}
}
The existence of a dam with a large embankment capacity has an outstanding influence on the thermal equilibrium of a river. In fact, the water retained in the reservoir has an important thermal inertia; it keeps cold in summer and warm in winter, taking as a reference the temperature that the river water would have if there was no dam. Therefore, when the water starts to be drained from the dam, the process of recovery of its thermal equilibrium begins. In this study we have developed a numerical model of the thermal behaviour of the river downstream from a reservoir, which has been checked with field tests on the Ebro river. In these tests we have pointed out the main role of the reservoirs of the Mequinenza-Ribarroja-Flix system, and the main factors that determine the recovery of the equilibrium of the river downstream from the dams.
1990
Vide, Juan P. Martín; Puertas-Agudo, Jerónimo; Dolz, José
Manning coefficients for plastic canal linings Artículo de revista
En: International Water Power and Dam Construction, vol. 42, no 6, pp. 29-31, 33, 1990, ISSN: 0306400X, (cited By 0).
Resumen | Enlaces | BibTeX | Etiquetas: Canals, Canals; Linings; Manning Formula; Plastic; Surface roughness; Waterways, Flow of Water - Friction; Fluid Mechanics; Membranes - Testing; Plastics - Friction, Manning Coefficients; Plastic Canal Linings; Roughness Coefficients
@article{Vide199029,
title = {Manning coefficients for plastic canal linings},
author = {Juan P. Martín Vide and Jerónimo Puertas-Agudo and José Dolz},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0025178322&partnerID=40&md5=08bf1a676d546eef461237c037c9fc25},
issn = {0306400X},
year = {1990},
date = {1990-01-01},
urldate = {1990-01-01},
journal = {International Water Power and Dam Construction},
volume = {42},
number = {6},
pages = {29-31, 33},
abstract = {The flow resistance of plastic linings is an important aspect to consider when exposed membranes are used to ensure the impermeability of canals. Plastic linings are sometimes considered to reduce Manning coefficients, and thus to increase water transport capacity. In this article, experimental research work on membrane roughness coefficients is presented. The modifications to flow resistance caused by imperfect placement of the membrane are discussed. Manning coefficients for plastic linings over old concrete-lined canals are calculated for cases of good placement. In this case, a substantial reduction in the Manning coefficient can be achieved.},
note = {cited By 0},
keywords = {Canals, Canals; Linings; Manning Formula; Plastic; Surface roughness; Waterways, Flow of Water - Friction; Fluid Mechanics; Membranes - Testing; Plastics - Friction, Manning Coefficients; Plastic Canal Linings; Roughness Coefficients},
pubstate = {published},
tppubtype = {article}
}
The flow resistance of plastic linings is an important aspect to consider when exposed membranes are used to ensure the impermeability of canals. Plastic linings are sometimes considered to reduce Manning coefficients, and thus to increase water transport capacity. In this article, experimental research work on membrane roughness coefficients is presented. The modifications to flow resistance caused by imperfect placement of the membrane are discussed. Manning coefficients for plastic linings over old concrete-lined canals are calculated for cases of good placement. In this case, a substantial reduction in the Manning coefficient can be achieved.
0000
Rao, K. M Chandroji; Sheshagiri, M. B.; Ramamoorthy, R. V.; Amran, M.; Nandanwar, A.; Vijayakumar, P.; Avudaiappan, S.; Guindos, Pablo
0000.
Resumen | Enlaces | BibTeX | Etiquetas: Agricultural residues; Sound absorption coefficient; Thermal conductivity; Noise reduction coefficient; Modulus of rupture
@misc{noauthor_effect_nodate,
title = {Effect of density on acoustic and thermal properties of low-density particle boards made from agro-residues: Towards sustainable material solutions},
author = {K. M Chandroji Rao and M. B. Sheshagiri and R. V. Ramamoorthy and M. Amran and A. Nandanwar and P. Vijayakumar and S. Avudaiappan and Pablo Guindos},
url = {https://bioresources.cnr.ncsu.edu/},
abstract = {This study assessed the feasibility of using major agricultural residues specifically bagasse, rice straw, wheat straw, and coir fiber to produce single-layer particle boards. These boards of densities 300, 400, and 500 kg/m³ were developed using melamine urea formaldehyde resin. Comprehensive evaluation of the boards included determination of their sound absorption coefficient (SAC), thermal conductivity, and noise reduction coefficient (NRC), as well as various physical properties and modulus of rupture. Additionally, the impact of board density on the SAC across a frequency range of 50 to 5000 Hz was examined. The coir boards displayed superior SAC, particularly at 3000 Hz. Rice straw boards at a density of 300 kg/m³ exhibited the lowest thermal conductivity (0.098 W/m-K). Density of 300 kg/m³ was optimal for achieving the highest SAC and lowest thermal conductivity in agro residue particle boards. As the density of the boards increased, SAC decreased, whereas thermal conductivity (K) increased, indicating that lower-density boards are more effective as sound and thermal insulators. Furthermore, all particle boards demonstrated promising sound absorption capabilities, achieving classifications of D and E under ISO 11654:1997, making them viable for interior applications in the building industry.},
keywords = {Agricultural residues; Sound absorption coefficient; Thermal conductivity; Noise reduction coefficient; Modulus of rupture},
pubstate = {published},
tppubtype = {misc}
}
This study assessed the feasibility of using major agricultural residues specifically bagasse, rice straw, wheat straw, and coir fiber to produce single-layer particle boards. These boards of densities 300, 400, and 500 kg/m³ were developed using melamine urea formaldehyde resin. Comprehensive evaluation of the boards included determination of their sound absorption coefficient (SAC), thermal conductivity, and noise reduction coefficient (NRC), as well as various physical properties and modulus of rupture. Additionally, the impact of board density on the SAC across a frequency range of 50 to 5000 Hz was examined. The coir boards displayed superior SAC, particularly at 3000 Hz. Rice straw boards at a density of 300 kg/m³ exhibited the lowest thermal conductivity (0.098 W/m-K). Density of 300 kg/m³ was optimal for achieving the highest SAC and lowest thermal conductivity in agro residue particle boards. As the density of the boards increased, SAC decreased, whereas thermal conductivity (K) increased, indicating that lower-density boards are more effective as sound and thermal insulators. Furthermore, all particle boards demonstrated promising sound absorption capabilities, achieving classifications of D and E under ISO 11654:1997, making them viable for interior applications in the building industry.
Wenzel, Alexander; Guindos, Pablo; Carpio, Manuel
Using Timber in Mid-Rise and Tall Buildings to Construct Our Cities: A Science Mapping Study Miscelánea
0000.
@misc{noauthor_using_nodate,
title = {Using Timber in Mid-Rise and Tall Buildings to Construct Our Cities: A Science Mapping Study},
author = {Alexander Wenzel and Pablo Guindos and Manuel Carpio},
url = {https://www.mdpi.com/2071-1050/17/5/1928},
keywords = {},
pubstate = {published},
tppubtype = {misc}
}
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