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Russia Yekaterinburg
Section Mathematics
Title On one routing problem modeling movement in radiation fields
Author(-s) Chentsov A.G.ab, Chentsov A.A.a, Grigoryev A.M.a
Affiliations Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Sciencesa, Ural Federal Universityb
Abstract We consider a routing problem with constraints and complicated cost functions. The visited objects are assumed to be clusters, or megalopolises (nonempty finite sets), and the visit to each of them entails certain tasks, which we call interior jobs. The order of visits is subject to precedence constraints. The costs of movements depend on the set of pending tasks (not yet complete at the time of the movement), which is also referred to as “sequence dependence”, “position dependence”, and “state dependence”. Such a dependence arises, in particular, in routing problems concerning emergencies at nuclear power plants, similar to the Chernobyl and Fukushima Daiichi incidents. For example, one could consider a disaster recovery problem concerned with sequential dismantlement of radiation sources; in this case, the crew conducting the dismantlement is exposed to radiation from the sources that have not yet been dealt with. This gives rise to dependence on pending tasks in the cost functions that measure the crew's radiation exposure. The latter dependence reflects the “shutdown” operations for the corresponding radiation sources. This paper sets forth an approach to a parallel solution for this problem, which was implemented and run on the URAN supercomputer.
Keywords dynamic programming, route, precedence constraints, parallel computation
UDC 519.6
MSC 49L20, 90C39
DOI 10.20537/vm170405
Received 21 August 2017
Language Russian
Citation Chentsov A.G., Chentsov A.A., Grigoryev A.M. On one routing problem modeling movement in radiation fields, Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki, 2017, vol. 27, issue 4, pp. 540-557.
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