This paper presents a novel reliable hierarchical location-allocation model where facilities are subject to the risk of disruptions. Based on the relationship between various levels of system, a multi-level multi-flow hierarchy is considered. The heterogeneous probabilistic disruptions are investigated in which the constructed facilities have different site-dependent and independent failure rat...

Mass Rapid Transit (MRT) systems, i.e. subway all over the world, are experiencing an increase in ridership. This also means that case of unplanned MRT service disruption, number affected passengers is larger, requiring a fast and comprehensive response. In this paper, we thus study disruption management systems. We develop optimization model to identify optimal bridging plan response so negati...

The vision of a world where users can be connected “anytime, anywhere”, considered futuristic only a decade ago, is now becoming reality. One critical enabling technology for “universal connectivity” is the ability to interconnect different types of networks, ranging from wired, infrastructure-based wireless (e.g., cellular-based networks, wireless mesh networks) to infrastructure-less wireless...