35 documents found, page 1 of 4
D3S: Decision support system for sectorization
Öztürk, E. G.; Rocha, P.; Rodrigues, A. M.; Ferreira, J. S.; Lopes, C.; Oliveira, C.; Nunes, A. C.Sectorization problems refer to dividing a large set, area, or network into smaller parts concerning one or more objectives. A decision support system (DSS) is a relevant tool for solving these problems, improving optimisation procedures, and finding feasible solutions more efficiently. This paper presents a new web-based Decision Support System for Sectorization (D3S). D3S is designed to solve sectorization pr...
Developing a system for sectorization: An overview
Öztürk, E. L.; Sousa, F. S. de.; Lima, M. M.; Rocha, P. F.; Rodrigues, A. M.; Ferreira, J. S.; Nunes, A. C.; Lopes, I. C.; Oliveira, C. T.Sectorization is the partition of a set or region into smaller parts, taking into account certain objectives. Sectorization problems appear in real-life situations, such as school or health districting, logistic planning, maintenance operations or transportation. The diversity of applications, the complexity of the problems and the difficulty in finding good solutions warrant sectorization as a relevant researc...
A resectorization of fire brigades in the north of Portugal
Lima, M. M.; Sousa, F.; Öztürk, E. G.; Rocha, P. F.; Rodrigues, A. M.; Ferreira, J. S.; Nunes, A. C.; Lopes, I. C.; Oliveira, C. T.Sectorization consists of grouping the basic units of a large territory to deal with a complex problem involving different criteria. Resectorization rearranges a current sectorization avoiding substantial changes, given a set of conditions. The paper considers the case of the distribution of geographic areas of fire brigades in the north of Portugal so that they can protect and rescue the population surrounding...
A web-based self-help intervention for coping with the loss of a partner: Proto...
Brodbeck, J.; Jacinto, S.; Gouveia, A.; Mendonça, N.; Madörin, S.; Brandl, L.; Schokking, L.; Rodrigues, A. M.; Gonçalves, J.; Mooser, B.Background: The death of a partner is a critical life event in later life, which requires grief work as well as the development of a new perspective for the future. Cognitive behavioral web-based self-help interventions for coping with prolonged grief have established their efficacy in decreasing symptoms of grief, depression, and loneliness. However, no study has tested the efficacy for reducing grief after lo...
Dynamic sectorization-conceptualization and application
Sousa, F. S. de.; Lima, M. M.; Öztürk, E. G.; Rocha, P. F.; Rodrigues, A. M.; Ferreira, J. S.; Nunes, A. C.; Oliveira, C.Sectorization is the division of a large area, territory or network into smaller parts considering one or more objectives. Dynamic sectorization deals with situations where it is convenient to discretize the time horizon in a certain number of periods. The decisions will not be isolated, and they will consider the past. The application areas are diverse and increasing due to uncertain times. This work proposes ...
An application of Preference-Inspired Co-Evolutionary Algorithm to sectorization
Öztürk, E.; Rocha, P.; Sousa, F.; Lima, M.; Rodrigues, A. M.; Ferreira, J. S.; Nunes, A. C.; Lopes, C.; Oliveira, C.Sectorization problems have significant challenges arising from the many objectives that must be optimised simultaneously. Several methods exist to deal with these many-objective optimisation problems, but each has its limitations. This paper analyses an application of Preference Inspired Co-Evolutionary Algorithms, with goal vectors (PICEA-g) to sectorization problems. The method is tested on instances of diff...
Multicenter and international study of MIC/MEC distributions for definition of ...
Ingroff, A. Espinel; Abreu, Daniel Paiva Barros de; Paes, R. Almeida; Brilhante, R.S.N.; Chakrabarti, A.; Chowdhary, A.; Hagen, F.; Córdoba, S.Clinical and Laboratory Standards Institute (CLSI) conditions for testing the susceptibilities of pathogenic Sporothrix species to antifungal agents are based on a collaborative study that evaluated five clinically relevant isolates of Sporothrix schenckii sensu lato and some antifungal agents. With the advent of molecular identification, there are two basic needs: to confirm the suitability of these testing co...
Portuguese recommendations for the use of biological therapies in patients with...
Machado, P. M.; Cerqueira, M.; Ávila-Ribeiro, P.; Aguiar, R.; Bernardo, A.; Sepriano, A.; Águeda, A.; Cordeiro, A.; Raposo, A.; Rodrigues, A. M.
The fractional volatility model : no-arbitrage, leverage and completeness
Mendes, Rui Vilela; Oliveira, Maria João; Rodrigues, A. M.When the volatility process is driven by fractional noise one obtains a model which is consistent with the empirical market data. Depending on whether the stochasticity generators of log-price and volatility are independent or are the same, two versions of the model are obtained with different leverage behaviors. Here, the no-arbitrage and completeness properties of the models are rigorously studied.
Diversity, distribution and ecology of benthic molluscan communities on the Por...
Martins, R.; Sampaio, L.; Quintino, V.; Rodrigues, A. M.The diversity, ecology and distribution patterns of the Portuguese continental shelf malacofauna and its relationship with abiotic factors were studied from samples covering the western and the southern coast. A total of 2544 specimens were identified corresponding to 169 taxa, mostly bivalves (62% of the total taxa). Abra alba was the most abundant and the most frequent species. The alpha diversity ranged from...