Abstract The production of soybean and corn has increased steadily in Brazil, with the Parana Sta... more Abstract The production of soybean and corn has increased steadily in Brazil, with the Parana State being the second largest producer of these grains. The increased production has now necessitated the storing facility also to be increased. Accordingly, partitioning the storage facility is a proposal to aggregate the municipalities of Parana into regions for effective transportation of the grains. Motivated by the requirement, the present work aims to organize the storage regions by aggregating the municipalities as a multi-objective graph (territory) partitioning problem with the municipalities being the nodes and roads linking them as the edges of the graph. In order to find the effective number of new silos to be constructed and their region-wise locations, maximization of the homogeneity of storage deficit and minimization of the inter-region product transportation cost from production sources to storage points are considered as two objective functions for the problem. A multi-objective genetic algorithm based results, presented here, should have a strong impact on the grain storage system management in Parana. Moreover, the proposed methodology might act as a useful grain storage management decision aiding tool in other territories.
DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2014
Entre as diferentes teorias heuristicas que visam explicar o processo decisorio, este estudo expl... more Entre as diferentes teorias heuristicas que visam explicar o processo decisorio, este estudo explora a falacia do jogador e a teoria da mao-quente. O objetivo deste artigo e investigar a influencia da autorregulacao afetiva nas heuristicas e vieses utilizados no processo de tomada de decisao. Foram realizados dois experimentos. No primeiro, foi avaliado se os resultados anteriores de ganhos com acoes de empresas afetavam a preferencia dos consumidores pela compra ou venda dessas acoes. Constatou-se diferenca entre generos no processo decisorio, com a ocorrencia da falacia do jogador para a amostra masculina, mas nao para a amostra feminina. O segundo experimento foi realizado com o intuito de verificar o papel da autorregulacao nestas heuristicas. Apos a inducao de autorregulacao, observou-se a ocorrencia da falacia do jogador e o vies da mao quente em algumas condicoes, indicando alteracoes nas decisoes tomadas pelos consumidores. A partir desses resultados, conclui-se que ha uma influencia significativa do estado afetivo nas tomadas de decisao e que as mulheres sao menos suscetiveis a falacia do jogador do que os homens. Keywords Autorregulacao; tomada de decisao; falacia do jogador; teoria da mao quente. THE INFLUENCE OF SELF-REGULATION IN HEURISTICS AND BIASES USED IN CONSUMER DECISION MAKING RESUMO Among the different heuristics theories that attempt to explain the decision making process, this study explores the gambler's fallacy and the hot hand theory. This paper investigates the influence of self-regulation in heuristics and biases used during consumer decision making. Two experiments were conducted. The first one assessed if results of past performance of stocks affected consumer preference to buy or sell those stocks. Results indicated a significant difference between gender in decision making, with the occurrence of the gambler's fallacy for the male sample, but not for the female sample. The second experiment investigated the role of self-regulation in the gambler's fallacy and hot hand bias. Results showed that after the induction of self-regulation, it was noticed the gambler's fallacy and the hot hand theory in some conditions, indicating changes in the decisions made by consumers. We conclude that there is a significant influence of affective state in decision making and that women are less susceptible to the gambler's fallacy than men. Palavras-Chave Self-regulation; decision making; gambler’s fallacy; hot hand theory.
Abstract The production of soybean and corn has increased steadily in Brazil, with the Parana Sta... more Abstract The production of soybean and corn has increased steadily in Brazil, with the Parana State being the second largest producer of these grains. The increased production has now necessitated the storing facility also to be increased. Accordingly, partitioning the storage facility is a proposal to aggregate the municipalities of Parana into regions for effective transportation of the grains. Motivated by the requirement, the present work aims to organize the storage regions by aggregating the municipalities as a multi-objective graph (territory) partitioning problem with the municipalities being the nodes and roads linking them as the edges of the graph. In order to find the effective number of new silos to be constructed and their region-wise locations, maximization of the homogeneity of storage deficit and minimization of the inter-region product transportation cost from production sources to storage points are considered as two objective functions for the problem. A multi-objective genetic algorithm based results, presented here, should have a strong impact on the grain storage system management in Parana. Moreover, the proposed methodology might act as a useful grain storage management decision aiding tool in other territories.
DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2014
Entre as diferentes teorias heuristicas que visam explicar o processo decisorio, este estudo expl... more Entre as diferentes teorias heuristicas que visam explicar o processo decisorio, este estudo explora a falacia do jogador e a teoria da mao-quente. O objetivo deste artigo e investigar a influencia da autorregulacao afetiva nas heuristicas e vieses utilizados no processo de tomada de decisao. Foram realizados dois experimentos. No primeiro, foi avaliado se os resultados anteriores de ganhos com acoes de empresas afetavam a preferencia dos consumidores pela compra ou venda dessas acoes. Constatou-se diferenca entre generos no processo decisorio, com a ocorrencia da falacia do jogador para a amostra masculina, mas nao para a amostra feminina. O segundo experimento foi realizado com o intuito de verificar o papel da autorregulacao nestas heuristicas. Apos a inducao de autorregulacao, observou-se a ocorrencia da falacia do jogador e o vies da mao quente em algumas condicoes, indicando alteracoes nas decisoes tomadas pelos consumidores. A partir desses resultados, conclui-se que ha uma influencia significativa do estado afetivo nas tomadas de decisao e que as mulheres sao menos suscetiveis a falacia do jogador do que os homens. Keywords Autorregulacao; tomada de decisao; falacia do jogador; teoria da mao quente. THE INFLUENCE OF SELF-REGULATION IN HEURISTICS AND BIASES USED IN CONSUMER DECISION MAKING RESUMO Among the different heuristics theories that attempt to explain the decision making process, this study explores the gambler's fallacy and the hot hand theory. This paper investigates the influence of self-regulation in heuristics and biases used during consumer decision making. Two experiments were conducted. The first one assessed if results of past performance of stocks affected consumer preference to buy or sell those stocks. Results indicated a significant difference between gender in decision making, with the occurrence of the gambler's fallacy for the male sample, but not for the female sample. The second experiment investigated the role of self-regulation in the gambler's fallacy and hot hand bias. Results showed that after the induction of self-regulation, it was noticed the gambler's fallacy and the hot hand theory in some conditions, indicating changes in the decisions made by consumers. We conclude that there is a significant influence of affective state in decision making and that women are less susceptible to the gambler's fallacy than men. Palavras-Chave Self-regulation; decision making; gambler’s fallacy; hot hand theory.
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Papers by Pedro Steiner