The use of small fi elds in radiotherapy techniques has increased substantially, in particular in stereotactic treatments and large uniform or nonuniform fi elds that are composed of small fi elds, such as for intensity-modulated radiation therapy (IMRT). This clinical perspective will focus on an experimental evaluation of the dose calculation accuracy of the anisotropic analytical algorithm (...

In this paper we study the problem of finding hotspots, i.e. regions in which a moving entity has spent a significant amount of time, for polygonal trajectories. The fastest optimal algorithm, due to Gudmundsson, van Kreveld, and Staals (2013) finds an axis-parallel square hotspot of fixed side length in O(n). Limiting ourselves to the case in which the entity moves in a direction parallel eith...

This paper presents an overview of the Middeck Active Control Experiment Flight II (MACE II). MACE is a space shuttle flight experiment designed to investigate modeling and control issues for achieving high precision pointing and vibration control of future spacecraft. MACE was developed by NASA Langley Research Center, the Massachusetts Institute of Technology, and Payload Systems, Inc. The ex...

In each iteration i of this algorithm there is a ow fi and a residual graph Gfi is constructed by for every edge e ∈ E decreasing the capacity of e by fi(e) and adding an edge in the reverse direction of e with capacity fi(e). A ow in this residual graph, gi, is computed and we update our ow fi by essentially adding gi. As we saw the residual graph was constructed precisely so that the set of f...