State-of-the-art baggage handling systems transport the baggage at high speeds, on a network of tracks, using destination coded vehicles (DCV). In order to ensure the optimal routing of DCVs, in this paper we propose a hierarchical control framework. In this framework switch controllers provide position instructions for each switch in the network. The switch controllers are then supervised by a...

A hybrid Mixed-Integer Linear Programming (MILP)/Constraint Programming (CP) decomposition algorithm is proposed for the short-term scheduling of batch plants that rely on the State Task Network representation. The decisions about the type and number of tasks performed, as well as the assignment of units to tasks are made by the MILP master problem. The CP subproblem checks the feasibility of a...

Due to the ongoing trend towards increased product variety, fast-moving consumer goods such as food and beverages, pharmaceuticals, and chemicals are typically manufactured through so-called make-and-pack processes. These processes consist of a make stage, a pack stage, and intermediate storage facilities that decouple these two stages. In operations scheduling, complex technological constraint...

In this paper, a mathematical formulation for the islanding of power networks is presented. Given an area of uncertainty in the network, the proposed approach uses mixed integer linear programming to isolate unhealthy components of the network and create islands, by (i) cutting lines, (ii) shedding loads and (iii) switching generators, while maximizing load supply. A key feature of the new meth...

We address the issue of computing a global minimizer AC Optimal Power Flow problem. introduce valid inequalities to strengthen Semidefinite Programming relaxation, yielding novel Conic relaxation. Leveraging these constraints, we dynamically generate Mixed-Integer Linear (MILP) relaxations, whose solutions asymptotically converge minimizers apply this iterative MILP scheme on IEEE PES PGLib [2]...

Modern baggage handling systems transport the baggage at high speeds, on a network of tracks, using destination coded vehicles (DCV). In order to ensure the optimal routing of DCVs, in this paper we propose a hierarchical control framework. In this framework switch controllers provide position instructions for each switch in the network. The switch controllers are then supervised by a so-called...

State-of-the-art baggage handling systems transport the baggage at high speeds, on a network of tracks, using destination coded vehicles (DCV). In order to ensure the optimal routing of DCVs, in this paper we propose a hierarchical control framework. In this framework switch controllers provide position instructions for each switch in the network. The switch controllers are then supervised by a...

Network Function Virtualization (NFV) allows multiple Virtual Networks (VNs) to share the underlying physical infrastructure via VN mapping, thus improving the utilization of physical resources. In this paper, for the first time, we study the multicast service-oriented VN mapping that can support big data applications over Elastic Optical Networks (EONs). We first formulate the problem of minim...

An optimization methodology based on Mixed Integer Linear Programming (MILP) has been developed for simultaneous optimization of water and energy (SOWE) in industrial processes. The superstructure integrates non-water process thermal streams and optimizes the consumption of water, while maximizing internal heat recovery to reduce thermal utility consumption. To address the complexity of water a...

Compared to legacy wavelength division multiplexing networks, elastic optical networks (EON) have added flexibility to network deployment and management. EONs can include previously available technology, such as signal regeneration and wavelength conversion, as well as new features such as finer-granularity spectrum assignment and modulation conversion. Yet each added feature adds to the cost o...