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Hibridiza??o de meta-heur?sticas com m?todos baseados em programa??o linear para o problema do caixeiro alugador / Hybridization of metaheuristics with methods based on linear programming for the traveling car renter salesman problemRios, Brenner Humberto Ojeda 02 February 2018 (has links)
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Previous issue date: 2018-02-02 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O Problema do Caixeiro Viajante com Aluguel de Carros, ou simplesmente Problema do
Caixeiro Alugador (PCA), ? uma generaliza??o do cl?ssico Problema do Caixeiro Viajante
(PCV) onde seu tour de visitas pode ser decomposto em caminhos cont?guos que
podem ser percorridos com diferentes carros alugados. O objetivo ? determinar o circuito
hamiltoniano que resulte em um custo final m?nimo, considerando a penaliza??o paga
em cada troca de ve?culos no tour. A penaliza??o ? o custo de retornar o carro at? a
cidade onde foi alugado. O PCA est? classificado como um problema NP-dif?cil. O presente
trabalho estuda a variante mais usada na literatura do PCA que ?: completo, total,
irrestrito, sem repeti??o, livre e sim?trico. O foco da pesquisa s?o os procedimentos h?bridos
que combinam meta-heur?sticas e m?todos baseados na Programa??o Linear. S?o
hibridizados: algoritmos cient?ficos (ScA), descida em vizinhan?a vari?vel (VND), busca
local adaptativa (ALSP) e uma nova variante do ALSP chamada busca local adaptativa
iterativa (IALSP). As seguintes t?cnicas s?o propostas para lidar com o PCA: ScA+ALSP,
ScA+IALSP e ScA+VND+IALSP. ? proposto um modelo de programa??o inteira mista
para o PCA o qual ? usado no ALSP e no IALSP. Testes n?o param?tricos s?o usados
para comparar os algoritmos em um conjunto de inst?ncias da literatura. / The Traveling Car Renter Salesman Problem, or simply Traveling Car Renter Problem
(CaRS), is a generalization of the Traveling Salesman Problem (TSP) where the tour can
be decomposed into contiguous paths that are traveled by different rented cars. The objective
is to construct a minimal cost Hamiltonian circuit, considering the penalty paid for
changing cars in the tour. This penalty is the cost of returning a car to the city where it
was rented. CaRS is classified as an NP-hard problem. This work studies the CaRS version
classified as: complete, total, unrestricted, with no repetition, free and symmetric. This
research is focused on hybrid procedures that combine metaheuristics and methods based
on Linear Programming (LP). The following methods were investigated: scientific algorithms
(ScA), variable neighborhood descent (VND), adaptive local search (ASLP) and a
new variant of ALSP called iterated adaptive local search (IALSP). The following techniques
are proposed to deal with CaRS: ScA+ALSP, ScA+IALSP and ScA+VND+IALSP.
A mixed integer programming model is proposed for CaRS which was used in the ALSP
and IALSP. Non-parametric tests were used to compare the algorithms within a set of
instances from the literature.
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An investigation of excess as symptomatic of Neo-Baroque identified in the work of selected South African artistsGreyvenstein, Lisa 22 August 2013 (has links)
This research investigates the Neo-Baroque aesthetic of excess in contemporary South African art, and explores reasons for the emergence of this style. It investigates artists who use their bodies as a site of resistance, to contest or reconstruct the dominant social values which establish differences between bodies to place them within the marginal position of ‘Other’. This investigation relates to post-colonial concerns. The artists’ exploitation of the Neo-Baroque aesthetic of excess as a comment on social concerns reveals a sense of crisis within South African society, similar to the conditions from which the seventeenth century Baroque style evolved. Neo-Baroque aesthetics of excess manifest in a variety of ways, and are particularly evident when artists transgress social boundaries placed on the body through abject and erotic associations. Excess ultimately arises from complexity, as hybrid art forms are created from the combination of media and content found within the art work. / Dissertation (MA)--University of Pretoria, 2012. / Visual Arts / unrestricted
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Desenvolvimento moral e valores culturais dos estudantes de gradua????o em ci??ncias cont??beis no BrasilLuczkiewicz, Dulciane Alves 18 March 2015 (has links)
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Previous issue date: 2015-03-18 / The objective of this study was to analyze, considering the brazilian cultural diversity, if there is a statistically meaningful difference in the level of moral development of Accounting students from different universities. The study was based on Kohlberg's moral development Theory, which presents three stages of moral development: pre-conventional (stages 1 and 2), conventional (stages 3 and 4) and post-conventional (stages 5 and 6), and on Hofstede's Culture Theory, which presents the following dimensions: power distance, collectivism versus individualism, femininity versus masculinity, uncertainty avoidance and long-term orientation versus short term orientation. The results were obtained through a descriptive analysis, ANOVA test, equality of proportion test, Pearson's correlation, confidence interval for average and p-value. The variables related to moral development, age, gender, religion and professional experience did not present statistically meaningful difference in the regions surveyed, what did not occur with the variable education, which proved to be a strong and consistent variable when compared to moral development. This study also aimed to verify if Hofstede's cultural dimensions presented significance between the studied regions. Difference was found in the following dimensions: power distance, individualism and long-term orientation. It is also possible to observe that the p index of moral development presents a statistically meaningful relation with the regions. Another important find in this study is that there is no statistically meaningful relation between the p index of moral development and the cultural values among the students that participated in this research in the regions surveyed. / Esta pesquisa teve como objetivo analisar, considerando-se as diversidades culturais do Brasil, se h?? diferen??a estatisticamente significativa em rela????o ao n??vel de desenvolvimento moral dos estudantes de gradua????o de Ci??ncias Cont??beis de diferentes Institui????es de Ensino Superior. Para tanto, utilizou-se como base a Teoria do desenvolvimento moral de Kohlberg, que postula em sua teoria tr??s n??veis de desenvolvimento moral: o pr??-convencional (est??gios 1 e 2), o convencional (est??gios 3 e 4) e o p??s-convencional (est??gios 5 e 6), e a Teoria da Cultura de Hofstede, que est?? definida nas seguintes dimens??es: dist??ncia do poder, coletivismo versus individualismo, feminilidade versus masculinidade, controle da incerteza e orienta????o de longo prazo versus curto prazo. Os resultados foram obtidos atrav??s de an??lise descritiva, teste ANOVA, teste de igualdade de propor????es, correla????o de Pearson, intervalo de confian??a para m??dia e p-valor. As vari??veis relacionadas com o Desenvolvimento Moral, idade, g??nero, religi??o e experi??ncia profissional, n??o tiveram diferen??as estatisticamente significativas nas regi??es pesquisadas, diferentemente da vari??vel educa????o, que comprovou ser uma vari??vel forte e consistente quando comparada com o desenvolvimento moral. Buscou-se ainda verificar se as dimens??es culturais de Hofstede tinham ou n??o signific??ncia entre as regi??es pesquisadas. Constatou-se diferen??a nas dimens??es dist??ncia do poder, individualismo e orienta????o a longo prazo. Nota-se ainda que o ??ndice p do desenvolvimento moral possui rela????o estatisticamente significante entre as regi??es. Outro achado importante nesta pesquisa foi que n??o h?? rela????o estatisticamente significativa entre o ??ndice p do desenvolvimento moral com os valores culturais entre os estudantes das regi??es pesquisadas.
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