C3 - Livros e Capítulos de Livroshttps://repositorio.furg.br/handle/1/4882024-03-29T01:41:28Z2024-03-29T01:41:28ZEcos terrestres do Sul: articulando os ecossistemas ao ensino de ciênciasSchwantes, LavíniaRibeiro, Paula Regina Costahttps://repositorio.furg.br/handle/1/75862017-10-30T20:39:02Z2017-01-01T00:00:00ZEcos terrestres do Sul: articulando os ecossistemas ao ensino de ciências
Schwantes, Lavínia; Ribeiro, Paula Regina Costa
2017-01-01T00:00:00ZTopology Optimization of continuum structures with epsilon-relaxed stress constraintsGuilherme, Carlos Eduardo MarcosFonseca, Jun Sérgio Onohttps://repositorio.furg.br/handle/1/63062023-08-22T20:39:39Z2007-01-01T00:00:00ZTopology Optimization of continuum structures with epsilon-relaxed stress constraints
Guilherme, Carlos Eduardo Marcos; Fonseca, Jun Sérgio Ono
Topology optimization of linear elastic continuum structures is a challenging problem when considering local stress constraints. The reasons are the singular behavior of the constraint with the density design variables, combined with the large number of constraints even for small finite element meshes. This work presents an alternative formulation for the s-relaxation technique, which provides an workaround for the singularity of the stress constraint. It also presents a new global stress constraint formulation. Derivation of the sensitivities for the constraint by the adjoint method is shown. Results for single and multiple load cases show the potential of the new formulation.
2007-01-01T00:00:00ZAn evolutionary spatial game-based approach for the self-regulation of social exchanges in MASMacedo, Luís Felipe Kiesow deDimuro, Graçaliz PereiraAguiar, Marilton Sanchotene deCoelho, Helderhttps://repositorio.furg.br/handle/1/48972015-05-22T19:40:35Z2014-01-01T00:00:00ZAn evolutionary spatial game-based approach for the self-regulation of social exchanges in MAS
Macedo, Luís Felipe Kiesow de; Dimuro, Graçaliz Pereira; Aguiar, Marilton Sanchotene de; Coelho, Helder
An open problem in social simulation and MAS applications
is the self-regulation of social exchange processes, aiming at the
achievement/maintenance of equilibrated exchanges by the agents
themselves, providing the continuation of the interactions in time.
This paper faces this problem through an approach based on the proposed
spatial and evolutionary Game of Self-Regulation of Social
Exchange Processes. The agents, adopting different social exchange
strategies, which take into account both the short and long-term aspects
of interactions, evolve such strategies by themselves in time, in
order to maximize their respective strategy-based fitness functions.
In consequence, the agents happen to perform more equilibrated and
fair interactions, increasing the number of successful exchanges
2014-01-01T00:00:00ZAnalisando trocas sociais baseadas em personalidades através de cadeias de Markov intervalaresFarias, Giovani ParenteDimuro, Graçaliz Pereirahttps://repositorio.furg.br/handle/1/48962015-05-22T19:06:10Z2010-01-01T00:00:00ZAnalisando trocas sociais baseadas em personalidades através de cadeias de Markov intervalares
Farias, Giovani Parente; Dimuro, Graçaliz Pereira
Neste trabalho analisam-se interações entre pares de agentes baseados em personalidades, entendidas como processos de trocas sociais modelados por Cadeias de Markov com probabilidades imprecisas. Os comportamentos baseados em personalidades que os agentes apresentam são modelados como funções de transição probabilísticas, onde probabilidades intervalares são utilizadas para expressar a incerteza na determinação destas probabilidades. Di versos tipos de traços de personalidades são discutidos e apresenta-se um estudo sobre duas amostras de tais traços: (i) obediência cega ou eventual a, ou total desconsideração de, recomendações dadas por algum mecanismo de regulação das interações; e (ii) fanatismo, tolerância, egoísmo e altruísmo, em conexão com as trocas que os agentes preferem realizar.; In this work, we present an analysis of interactions between pairs of personality-based agents, viewed as a social exchange processes modelled as Markov chains with imprecise probabilities. The agents’ personality-based behaviors are modeled as probabilistic transition functions, where intervalvalued probabilities are used to express the uncertainty in determining those probabilities. We discuss several kinds of personality traits, and present a study of two samples of such traits: (i) blind or eventual obedience to, and full disregard of, recommendations provided by some social regulation mechanism; and (ii) fanaticism, tolerance, egoism or altruism in connection to preferences about balances of the material results obtained from the interactions.
2010-01-01T00:00:00Z