Diego Ruiz-Hernández is PhD in Operational Research from Universitat Pompeu Farba in Barcelona. He is currently associate professor of Financial Mathematics and Business Statistics at CUNEF. His research fields are dynamic allocation models, heuristic solutions for stochastic decision problems and network and discrete location models. Diego is currently member of the Sociedad Española de Estadística e Investigación Operativa, the Operational Research Society (UK) and the Institute for Operations Research and the Management Sciences (USA).