28 research outputs found
Household costs and time to treatment for children with severe febrile illness in rural Burkina Faso: the role of rectal artesunate
UNICEF/UNDP/World Bank/WHO Special Programme for Research & Training in Tropical Diseases (TDR), World Health Organization, Geneva, Switzerland [Project ID number: Burkina Faso: A80553
The non-emergency patient transport modelled as a team orienteering problem
This work presents an improved model to solve the non-emergency
patients transport (NEPT) service issues given the new rules recently
established in Portugal. The model follows the same principle of the Team
Orienteering Problem by selecting the patients to be included in the routes
attending the maximum reduction in costs when compared with individual
transportation. This model establishes the best sets of patients to be transported
together. The model was implemented in AMPL and a compact formulation
was solved using NEOS Server. A heuristic procedure based on iteratively
solving Orienteering Problems is presented, and this heuristic provides good
results in terms of accuracy and computation time. Euclidean instances as well
as asymmetric real data gathered from Google maps were used, and the model
has a promising performance mainly with asymmetric cost matrices.Project GATOP - Genetic Algorithms for Team Orienteering Problem (Ref PTDC/EME-GIN/120761/2010), financed by national funds by FCT / MCTES, and co-funded by the European Social Development Fund (FEDER) through the COMPETE - Programa Operacional Fatores de Competitividade (POFC) Ref FCOMP-01-0124-FEDER-020609. This work has been par tially supported by FCT – Fundação para a Ciência e Tecnologia within the Project Scope: UID/CEC/00319/201