Telepresença interativa e Telemática: Dançando com a imagem do corpo digital em transmissão em rede

This paper investigates the interactive relationships between physical and digital bodies in a telematic performance and performative installation arrangement, based on both theoretical and practical research. During the development and presentation of a practice-based project, performers’ and spectators’ contribution to the creative process and the fusion of a conscious with an illusionary state were observed and analysed using heuristic research methodology. This research includes an improvement of methods that supports embodiment and communication with and through the live transmitted digital body image, where time, space and gravity are central themes.Este trabalho investiga a relação interativa entre corpos físicos e digitais numa performance telemática e em arranjos de instalação performativa, e baseia-se tanto em pesquisa teórica quanto na prática. Durante o desenvolvimento e a apresentação de um projeto baseado em prática, a contribuição de performers e espectadores para o processo criativo, e a fusão de uma consciência do estado ilusório foram observadas e analisadas por meio de metodologia heurística de pesquisa. Esta pesquisa inclui o desenvolvimento de métodos que dão sustentação à corporeidade e à comunicação com e por meio de uma imagem do corpo transmitida ao vivo, onde tempo, espaço e gravidade são os temas centrais

A rolling-horizon quadratic-programming approach to the signal control problem in large-scale congested urban road networks

The paper investigates the efficiency of a recently developed signal control methodology, which offers a computationally feasible technique for real-time network-wide signal control in large-scale urban traffic networks and is applicable also under congested traffic conditions. In this methodology, the traffic flow process is modeled by use of the store-and-forward modeling paradigm, and the problem of network-wide signal control (including all constraints) is formulated as a quadratic-programming problem that aims at minimizing and balancing the link queues so as to minimize the risk of queue spillback. For the application of the proposed methodology in real time, the corresponding optimization algorithm is embedded in a rolling-horizon (model-predictive) control scheme. The control strategy’s efficiency and real-time feasibility is demonstrated and compared with the Linear-Quadratic approach taken by the signal control strategy TUC (Traffic-responsive Urban Control) as well as with optimized fixed-control settings via their simulation-based application to the road network of the city centre of Chania, Greece, under a number of different demand scenarios. The comparative evaluation is based on various criteria and tools including the recently proposed fundamental diagram for urban network traffic

Optimization of a two-phase anaerobic digestion system

Imperial Users onl

Asymptotically optimal component assembly plans in repairable systems and server allocation in parallel multiserver queues

T identical exponential lifetime components out of which G are initially functioning (and B are not) are to be allocated to N subsystems, which are connected either in parallel or in series. Subsystem i, i = 1,..., N, functions when at least Ki of its components function and the whole system is maintained by a single repairman. Component repair times are identical independent exponentials and repaired components are as good as new. The problem of the determination of the assembly plan that will maximize the system reliability at any (arbitrary) time instant t is solved when the component failure rate is sufficiently small. For the parallel configuration, the optimal assembly plan allocates as many components as possible to the subsystem with the smallest Ki and allocates functioning components to subsystems in increasing order of the Ki's. For the series configuration, the optimal assembly plan allocates both the surplus and the functioning components equally to all subsystems whenever possible, and when not possible it favors subsystems in decreasing order of the Ki's. The solution is interpreted in the context of the optimal allocation of processors and an initial number of jobs in a problem of routing time consuming jobs to parallel multiprocessor queues

Application of the extended traffic signal control strategy TUC to the Southampton urban road network

The paper outlines the objectives and approach along with simulation results of the recent extensions of the traffic signal control strategy TUC (Traffic-responsive Urban Control). Based on well-known methods of the Automatic Control theory, TUC allows for the traffic-responsive coordinated signal control of large-scale urban networks aimed to be particularly efficient under saturated traffic conditions. Simulation investigations of the extended TUC application in a large part of the urban network of Southampton, UK, by use of the METACOR macroscopic simulator, demonstrate the efficiency of the new signal control strategy

Dermoid cyst of the lateral neck: Report of a case

Dermoid cysts of the floor of the mouth and submandibular space represent an unusual clinical entity. A case of an enlarged dermoid cyst in the left submandibular space in a 19-year-old female is reported, along with a review of the literature. Copyright © 2001 S. Karger AG, Basel