La simulación hidráulica como herramienta de apoyo a la toma de decisiones en Global Omnium

[ES] La moderna gestión de los sistemas de abastecimiento de agua requiere el uso de modelos matemáticos como herramienta de soporte para la toma de decisiones, tanto en el ámbito de la planificación como en la operación diaria de la red. Los modelos son, además, claves para garantizar una gestión eficiente de los recursos hídricos y energéticos disponibles, así como una reacción rápida y segura frente a una situación de emergencia. Con este objetivo Global Omnium tiene implantado desde hace años en su Centro de Control de la red de abastecimiento a Valencia y su área metropolitana un modelo matemático de simulación hidráulica de la red capaz de trabajar en tiempo real. Una aplicación se encarga de almacenar y tratar la información recibida del sistema de telecontrol, unos 20.000 datos horarios por día, y de alimentar con ella el modelo para simular el comportamiento de la red bajo cualquier circunstancia, actuando así como un Sistema de Apoyo a la Toma de Decisiones (DSS). Los últimos avances, realizados en colaboración con el IIAMA de la UPV, se han orientado a mejorar las capacidades de simulación del modelo, a su calibración automática, y a integrar fugas y demandas dependientes de la presión.[EN] The modern management of water supply systems requires the use of mathematical models as a decision support system, both in the field of planning and in the daily network operation. Moreover models are key to the efficient management of available water and energy resources and to having a rapid and safe reaction to emergencies. Therefore, the water supply and distribution network of Valencia (Spain) and its metropolitan area has implanted for years in its Control Center a highly accurate hydraulic simulation model, able to work in real time, which is fed through the measures received from the remote control system, with approximately 20,000 hourly data per day. The model simulate the behavior of the network under any scenario, acting as a DSS. Recent advances, in collaboration with the IIAMA of UPV, are focused to improve the capabilities of the model, to keep the model permanently calibrated, and to consider pressure dependent leakage and demands.Conejos Fuertes, P.; Gamón, A.; Urban Torres, P.; Martínez Alzamora, F.; Alonso-Campos, J. (2017). La simulación hidráulica como herramienta de apoyo a la toma de decisiones en Global Omnium. Tecnoaqua. (26):46-53. http://hdl.handle.net/10251/104735S46532

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements