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Browsing by UPV Unit "Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient"

Now showing items 1-20 of 1217

"Ecualizador": un método integral para la decisión con múltiples objetivos

Jaramillo Álvarez, Patricia; Andreu Álvarez, Joaquín; Smith Quintero, Ricardo (Universitat Politècnica de València, 2002-06-30)

[ES] Se presenta un sistema soporte para la toma de decisión multiobjetivo en un espacio continuo, en el que se integraron métodos clásicos y una metodología que se ha denominado "ecualizador" por las facultades regularizadoras ...
3D model evolution of a leak based on GPR image interpretations

Ocana-Levario, S.J.; Ayala Cabrera, David; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (IWA Publishing, 2015-12)

This paper presents some aspects of the time propagation of underground water leakage in controlled laboratory conditions using a drilled polyvinyl chloride (PVC) pipe and interpreting ground penetrating radar (GPR) images. ...
3D Representation of (Buried) Water Supply Elements using Pre-Processed GPR Images

Ayala Cabrera, David; Ocaña Levario, Silvia Janeth; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (2015)

[EN] In this paper, a ground penetrating radar (GPR) is used as a non-destructive method to assess the buried elements of water supply systems (WSSs). The aim is the detection of various pipe materials (such as plastic ...
A combined risk analysis approach for complex dam-levee systems

Castillo-Rodríguez, J.T.; Needham, J.T.; Morales Torres, Adrián; Escuder Bueno, Ignacio (Taylor & Francis, 2017)

[EN] In many areas of the world, dams and levees are built to reduce the likelihood of flooding. However, if they fail, the result can be catastrophic flooding beyond what would happen if they did not exist. Therefore, ...
A comparative analysis of the effectiveness of flood management measures based on the concept of retaining water in the landscape in different European hydro-climatic regions

Salazar Galán, Sergio Andrés; Francés, F.; Komma, J.; Blume, J.; Francke, T.; Bronstert, A.; Blöschl, G. (European Geosciences Union (EGU), 2012)

In this paper, we analyse the effectiveness of flood management measures based on the concept known as retaining water in the landscape . The investigated measures include afforestation, micro-ponds and small-reservoirs. ...
A comparative study of the influence of salt concentration on the performance of an osmotic membrane bioreactor and a sequencing batch reactor

Soler Cabezas, José Luis; Lujan Facundo, Maria Jose; Mendoza Roca, José Antonio; Vincent Vela, Maria Cinta; Pastor Alcañiz, Laura (John Wiley & Sons, 2018)

[EN] BACKGROUNDAn osmotic membrane bioreactor (OMBR) is a wastewater treatment technique that presents low energy requirements, low membrane fouling and high removal of nutrients and organic matter. However, reverse salt ...
A Comparative Study of Three-Dimensional Hydraulic Conductivity Upscaling at the MAcro-Dispersion Experiment (MADE) site, Columbus Air Force Base, Mississippi (USA)

Li ., Liangping; Zhou ., Haiyan; Gómez-Hernández, J. Jaime (Elsevier, 2011-07-11)

Simple averaging, simple-Laplacian, Laplacian-with-skin, and non-uniform coarsening are the techniques investigated in this comparative study of three-dimensional hydraulic conductivity upscaling. The reference is a fine ...
A comparison of artificial neural networks and random forests to predict native fish species richness in Mediterranean rivers

Olaya Marín, Esther Julia; Martinez-Capel, Francisco; Vezza, Paolo (EDP Sciences, 2013)

[EN] Machine learning (ML) techniques have become important to support decision making in management and conservation of freshwater aquatic ecosystems. Given the large number of ML techniques and to improve the ...
A conceptual numerical model to simulate hydraulic head in aquifers that are hydraulically connected to surface water bodies

Pulido Velázquez, David; Sahuquillo Herráiz, Andrés; Andreu Álvarez, Joaquín (Wiley: 12 months, 2011-07)

In this paper, we present a conceptual-numerical model that can be deduced from a calibrated finite difference groundwater-flow model, which provides a parsimonious approach to simulate and analyze hydraulic heads and ...
A decision analysis framework for stakeholder involvement and learning in groundwater management

Karjalainen, T.P.; Rossi, P. M.; Ala-aho, P.; Eskelinen, R.; Reinikainen, K.; Klove, B.; Pulido-Velazquez, M.; Yang, H. (European Geosciences Union (EGU), 2013)

[EN] Multi-criteria decision analysis (MCDA) methods are increasingly used to facilitate both rigorous analysis and stakeholder involvement in natural and water resource planning. Decision making in that context is often ...
A decision support system for water quality issues in the Manzanares River (Madrid, Spain)

Paredes Arquiola, Javier; Andreu Álvarez, Joaquín; Solera Solera, Abel (Elsevier, 2010)

The Manzanares River, located in Madrid (Spain), is the main water supplier of a highly populated region, and it also receives wastewater from the same area. The effluents of eight Waste Water Treatment Plants (WWTPs) ...
A decision support tool for the order promising process with product homogeneity requirements in hybrid Make-To-Stock and Make-To-Order environments. Application to a ceramic tile company

Alemany Díaz, María Del Mar; Ortiz Bas, Ángel; Fuertes-Miquel, Vicente S. (Elsevier, 2018)

[EN] Order promising in manufacturing systems that produce non-uniform units of the same finished good becomes a more complex process when customer orders need to be served with homogeneous units. To facilitate this task, ...
A decision support tool for the order promising process with product homogeneity requirements in hybrid Make-To-Stock and Make-To-Order environments. Application to a ceramic tile company

Alemany Díaz, María Del Mar; Ortiz Bas, Ángel; Fuertes-Miquel, Vicente S. (Elsevier, 2018)

[EN] Order promising in manufacturing systems that produce non-uniform units of the same finished good becomes a more complex process when customer orders need to be served with homogeneous units. To facilitate this task, ...
A filtering algorithm for high-resolution flow traces to improve water end-use analysis

Pastor-Jabaloyes, Laura; Arregui de la Cruz, Francisco; Cobacho Jordán, Ricardo (IWA Publishing, 2018)

[EN] One of the main difficulties encountered when designing automatic tools for water end use identification is the inherent noise present in recorded flow traces. Noise is mainly caused by the inability of the monitoring ...
A filtration model applied to submerged anaerobic MBRs (SAnMBRs)

Robles Martínez, Ángel; Ruano García, María Victoria; Ribes Bertomeu, Jose; Seco Torrecillas, Aurora; FERRER, J. (Elsevier, 2013-10-01)

The aim of this study was to develop a model able to correctly reproduce the filtration process of submerged anaerobic MBRs (SAnMBRs). The proposed model was calibrated and validated in a SAnMBR demonstration plant fitted ...
A Flexible Methodology to Sectorize Water Supply Networks Based on Social Network Theory Concepts and on Multi-objective Optimization

Campbell-Gonzalez, Enrique; Izquierdo Sebastián, Joaquín; Montalvo Arango, Idel; Ilaya-Ayza, Amilkar Ernesto; Pérez García, Rafael; Tavera, Mario (IWA Publishing, 2016-01)

A novel methodology to sectorize water supply networks (WSNs) depending on a main transmission line is presented in this paper. The methodology is based on concepts derived from the social network theory and graph theory ...
A fuzzy model for shortage planning under uncertainty due to lack of homogeneity in planned production lots

Alemany Díaz, María del Mar; Grillo Espinoza, Hanzel; Ortiz Bas, Ángel; Fuertes Miquel, Vicente Samuel (Elsevier, 2015-08-01)

Lack of homogeneity in the product (LHP) affects several sectors like horticulture, reverse logistics, furniture, ceramics and leathers, among others. Productive processes with LHP are characterized by manufacturing units ...
A hybrid, auto-adaptive, and rule-based multi-agent approach using evolutionary algorithms for improved searching

Izquierdo Sebastián, Joaquín; Montalvo Arango, Idel; Campbell, E.; Pérez García, Rafael (Taylor & Francis: STM, Behavioural Science and Public Health Titles, 2015-11-19)

Selecting the most appropriate heuristic for solving a specific problem is not easy, for many reasons. This article focuses on one of these reasons: traditionally, the solution search process has operated in a given manner ...
A hydro-economic modeling framework for optimal management of groundwater nitrate pollution from agriculture

Peña Haro, Salvador (2010-04-15)

La contaminación difusa por nitratos de las aguas subterráneas, la cual es principalmente originada por la agricultura, es una creciente preocupación en casi cualquier parte del mundo. Esto ha provocado el desarrollado de ...
A hydro-economic modelling framework for optimal management of groundwater nitrate pollution from agriculture

Peña Haro, Salvador; Pulido-Velazquez, M.; Sahuquillo Herráiz, Andrés (Elsevier, 2009-06)

A hydro-economic modelling framework is developed for determining optimal management of groundwater nitrate pollution from agriculture. A holistic optimization model determines the spatial and temporal fertilizer application ...