Deriva urbana como pedagogía en aulas de arte

The practice of dérive, despite being conceptually born mainly from situationism, has in a broader spectrum been carried out throughout history. As it is the act of walking and wandering to discover, it is also an action inherent to the human being. In the educational context, it offers the opportunity of an immersion methodology in both physical and conceptual spaces, serving as a catalyst to generate processes, multi-textual artistic practices or reflections on the elements that make up these spaces. It is a way of thinking about the city and also of being a part of it.In this article we analyze the experience of urban dérive carried out at the Pablo Picasso Art and Design College with one of the groups of students, who undertook a study away from the educational centre to promote collective and individual processes about the knowledge of the local urban environment.La práctica de la deriva urbana, aunque conceptualmente nace principalmente del situacionismo, en un espectro ampliado se ha llevado a cabo a lo largo de toda la historia, pues es el acto de caminar y deambular para descubrir, es una acción inherente al ser humano. En el contexto educativo, ofrece la oportunidad de una metodología de inmersión en los espacios tanto físicos como conceptuales, sirviendo de catalizador para generar procesos, prácticas artísticas multitextuales o reflexiones en torno a los elementos que configuran dichos espacios. Es una forma de pensar la ciudad y también de ser partícipe de ella.En el presente artículo analizamos la experiencia de deriva urbana llevada a cabo en la EASD Pablo Picasso con uno de los grupos de alumnado, suponiendo una salida del centro educativo y propiciando procesos colectivos e individuales acerca del conocimiento del entorno urbano local

Using real-time information to reschedule jobs in a flowshop with variable processing times

Versión revisada. Embargo 36 mesesIn a time where detailed, instantaneous and accurate information on shop-floor status is becoming available in many manufacturing companies due to Information Technologies initiatives such as Smart Factory or Industry 4.0, a question arises regarding when and how this data can be used to improve scheduling decisions. While it is acknowledged that a continuous rescheduling based on the updated information may be beneficial as it serves to adapt the schedule to unplanned events, this rather general intuition has not been supported by a thorough experimentation, particularly for multi-stage manufacturing systems where such continuous rescheduling may introduce a high degree of nervousness in the system and deteriorates its performance. In order to study this research problem, in this paper we investigate how real-time information on the completion times of the jobs in a flowshop with variable processing times can be used to reschedule the jobs. In an exhaustive computational experience, we show that rescheduling policies pay off as long as the variability of the processing times is not very high, and only if the initially generated schedule is of good quality. Furthermore, we propose several rescheduling policies to improve the performance of continuous rescheduling while greatly reducing the frequency of rescheduling. One of these policies, based on the concept of critical path of a flowshop, outperforms the rest of policies for a wide range of scenarios.Ministerio de Ciencia e Innovación DPI2016-80750-

Efficiency of the solution representations for the hybrid flow shop scheduling problem with makespan objective

In this paper we address the classical hybrid flow shop scheduling problem with makespan objective. As this problem is known to be NP-hard and a very common layout in real-life manufacturing scenarios, many studies have been proposed in the literature to solve it. These contributions use different solution representations of the feasible schedules, each one with its own advantages and disadvantages. Some of them do not guarantee that all feasible semiactive schedules are represented in the space of solutions –thus limiting in principle their effectiveness– but, on the other hand, these simpler solution representations possess clear advantages in terms of having consistent neighbourhoods with well-defined neighbourhood moves. Therefore, there is a trade-off between the solution space reduction and the ability to conduct an efficient search in this reduced solution space. This trade-off is determined by two aspects, i.e. the extent of the solution space reduction, and the quality of the schedules left aside by this solution space reduction. In this paper, we analyse the efficiency of the different solution representations employed in the literature for the problem. More specifically, we first establish the size of the space of semiactive schedules achieved by the different solution representations and, secondly, we address the issue of the quality of the schedules that can be achieved by these representations using the optimal solutions given by several MILP models and complete enumeration. The results obtained may contribute to design more efficient algorithms for the hybrid flow shop scheduling problem.Ministerio de Ciencia e Innovación DPI2016-80750-

Religiosidad popular andaluza. Testimonio de un patrimonio que nos identifica

Este artículo intenta resaltar el interés que revisten las manifestaciones de la religiosidad popular andaluza como testimonios de un patrimonio que nos identifica, y que es exponente tanto de un modo común de expresión del pueblo andaluz como de los sugerentes matices que aporta nuestra propia pluralidad sociocultural. Unos elementos entendidos desde sus raíces tradicionales, adaptados, y por tanto vivos, en su reproducción cultural actual. Sólo atendiendo a esos modos particulares de vivir la religión puede llegarse al entendimiento global y no objetual de esta parte de nuestro patrimonio cultura