Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-22T20:29:38Z No. of bitstreams: 1 RenanFelintoDeFariasAires_TESE.pdf: 3160492 bytes, checksum: 77c09a889c670959db28ea23ee009ac3 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-23T22:03:32Z (GMT) No. of bitstreams: 1 RenanFelintoDeFariasAires_TESE.pdf: 3160492 bytes, checksum: 77c09a889c670959db28ea23ee009ac3 (MD5) / Made available in DSpace on 2017-11-23T22:03:32Z (GMT). No. of bitstreams: 1 RenanFelintoDeFariasAires_TESE.pdf: 3160492 bytes, checksum: 77c09a889c670959db28ea23ee009ac3 (MD5) Previous issue date: 2017-09-29 / Durante as ?ltimas d?cadas, v?rios m?todos de Apoio Multicrit?rio ? Decis?o (MCDM) t?m sido utilizados para auxiliar decisores na sele??o de melhores alternativas para problemas de decis?o diversos. Dentre eles, o Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) ? um dos mais utilizados. Apesar da sua grande difus?o, este tem sido criticado devido ? ocorr?ncia de um problema chamado rank reversal (revers?o de ordena??o), que, em sua mais conhecida denomina??o, se refere ? mudan?a na ordena??o de um grupo de alternativas anteriormente ordenadas ap?s uma alternativa irrelevante ter sido adicionada ou exclu?da desse grupo. Apesar da quantidade significativa de estudos sobre este problema para os m?todos MCDM, tem-se que a an?lise desse problema para o TOPSIS ainda ? feita de forma superficial, sem um estudo criterioso acerca das causas e condi??es de ocorr?ncia, bem como marcada por proposi??es de modelos inadequados. Por conta disso, o objetivo desse estudo foi propor uma extens?o do m?todo TOPSIS para minimizar a revers?o de ordena??o. Para isso, foi realizada uma pesquisa experimental a partir de simula??es computacionais geradas aleatoriamente com base em quatro situa??es de revers?o selecionados na literatura. Nos casos de ambas as problem?ticas investigadas, de escolha e de ordena??o, foram analisados os efeitos da normaliza??o utilizada e dos limiares de indiferen?a. Adicionalmente, os casos da problem?tica de escolha tamb?m foram analisados a partir da regress?o log?stica, no intuito de estimar as condi??es em que h? uma maior probabilidade de ocorr?ncia de revers?o de ordena??o. Com base nos experimentos e na an?lise dos modelos da literatura, foi proposta uma extens?o do TOPSIS. O modelo proposto ? baseado na defini??o de um conjunto de valores intitulado de Dom?nio, que representa os valores limites de cada crit?rio na matriz de decis?o no intuito de ultrapassar os inconvenientes do TOPSIS. Para a valida??o da proposta, foi realizada uma aplica??o num?rica para a problem?tica de sele??o de estudantes e concluiu-se que o modelo proposto ? robusto por, simultaneamente, evitar a ocorr?ncia da revers?o de ordena??o e apresentar uma boa capacidade discriminat?ria. / During the last decades, various multi-criteria decision-making methods (MCDM) have been used to assist decision makers in selecting the best alternatives for many decision problems. Among them, the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is one of the most used. Despite its wide dissemination, it has been criticized due to the occurrence of a problem called rank reversal, which in its most known meaning refers to the change in the ordering of a group of previously ordered alternatives after an irrelevant alternative has been added or removed from this group. Despite the significant amount of research on this problem for MCDM methods, it has been superficially analyzed in the case of TOPSIS, without a careful study on the occurrence causes and conditions, as well as marked by propositions inadequate models. Therefore, the aim of this study was to propose an extension of the TOPSIS method to minimize rank reversal. For this, it was realized an experimental research through computer simulations randomly generated based on four reversal situations selected in the literature. In the cases of the both problems types investigated, of choice and rank, the effects of the normalization used and the indifference thresholds were analyzed. In addition, the cases of the problem of choice were also analyzed from the logistic regression, in order to estimate the conditions in which there is a greater probability of occurrence of rank reversal. Based on the experiments and analysis of the literature models, an extension of TOPSIS was proposed. The proposed model is based on the definition of a set of values called Domain, which represents the limit values of each criterion in the decision matrix in order to overcome the drawbacks of TOPSIS. For the validation of the proposal, a numerical application was made for the problem of student selection and it was concluded that the proposed model is robust because it simultaneously prevents the occurrence of ranking reversal and presents a good discriminatory capacity.

Made available in DSpace on 2014-12-17T13:53:38Z (GMT). No. of bitstreams: 1 RenanFFA_DISSERT.pdf: 1578482 bytes, checksum: 2ae0ef8a075874635c253eca6812ce8f (MD5) Previous issue date: 2014-01-14 / The discussions wherein develop proposals for university reform in Brazil include, among other things, the conception of the university titled "New University", whose structural origin comes from the bill of higher education reform and unification of the foundations of education European upper (Bologna process). At its core, the Bologna process has imposed a series of transformations, among which, the promotion of mobility, as a stimulus to interinstitutional cooperation to enable an better and bigger qualification of the students. Nevertheless, what we see is that this point is one of the main points made flawed by Brazilian institutions that have adopted this model of higher education. An example is the Bachelor of Science and Technology - BC&T, Federal University of Rio Grande do Norte - UFRN, where there are problems of the internal order, represented by the problem of the reusing of the disciplines, such also of external order, in cases of transfers interinstitutional. Because of this, and knowing that this is a typical problem in which multiple criteria are involved, the aim of this study is to propose a multicriteria model for selection of interciclo of the BC&T of the UFRN which addresses the issue of mobility. For this, this study was of exploratory and study case nature, use as tools of data collection, the bibliographic and documentary research, as well as semi-structured interviews. For the elaboration of the model, were used the five phases most commonly used in the modeling of problems in operational research in a sample of 91 students of BC&T. As a result, we obtained a model that addresses the issue of internal and external mobility of the school and that, moreover, was also more robust and fair than the current model of BC&T and also what is used in other courses of the UFRN, taking into consideration the expected results by the decision makers / As discuss?es em que se desenvolvem as propostas de reforma universit?ria no Brasil compreendem, dentre outros aspectos, a concep??o da universidade intitulada de Universidade Nova , cuja origem estrutural adv?m do projeto de lei da reforma da educa??o superior e dos fundamentos da unifica??o da educa??o superior europeia (processo de Bolonha). Em seu cerne, o processo de Bolonha imp?s uma s?rie de transforma??es, dentre as quais, a promo??o da mobilidade, como est?mulo ? coopera??o interinstitucional no intuito de permitir uma melhor e maior qualifica??o dos alunos. Apesar disso, o que se percebe ? que este ponto ? um dos principais aspectos deficientes apresentados pelas institui??es brasileiras que adotaram esse modelo de ensino superior. Um exemplo disto ? o Bacharelado em Ci?ncias e Tecnologia - BC&T da Universidade Federal do Rio Grande do Norte - UFRN, em que existem problemas tanto de ordem interna, representada pelo problema de reaproveitamento de disciplinas, como de ordem externa, para os casos de transfer?ncias interinstitucionais. Por conta disto, e sabendo-se que este ? um t?pico problema em que est?o envolvidos m?ltiplos crit?rios, o objetivo deste estudo ? propor um modelo multicrit?rio para a sele??o interciclo do BC&T da UFRN, que contemple a quest?o da mobilidade. Para tanto, este estudo, de car?ter explorat?rio e delineado como estudo de caso, utilizou, como ferramentas de coleta de dados, as pesquisas bibliogr?fica e documental, al?m de entrevistas semiestruturadas. Para a elabora??o do modelo, foram utilizadas as cinco fases mais comumente presentes nas modelagens dos problemas de pesquisa operacional em uma amostra de 91 discentes do BC&T. Como resultados, obteve-se um modelo que contempla a quest?o da mobilidade interna e externa da escola e que, al?m disso, tamb?m se mostrou mais robusto e justo do que o modelo atual do BC&T e tamb?m do que ? utilizado nas demais gradua??es da UFRN, levando em considera??o as expectativas de resultados dos decisores