Luiz Gaviao

Universidade Federal Fluminense | UFF · Departamento de Engenharia de Produção (TEP)

Multicriteria decision aid requires a database as a decision matrix, in which two or more alternatives are evaluated according to two or more variables selected as decision criteria. Several problems of this nature use measures by Likert scales. Depending on the method, parameters from these data (e.g. means, modes or medians) are required for calc...

In this article, a multicriteria model for the assessment of electoral preferences is built. The main hypothesis underlying the model is that the population as a whole evaluates each party by considering its position with respect to a set of issues. An analysis is developed of the case of parties’ positions and voters’ preferences set on the basis...

This article develops a mechanism for automatically classifying rewarded collaboration proposals. The research’s purpose is to increase transparency in the rewarded collaboration process, thereby inviting more collaboration proposals, to aid in the fight against criminal organizations. The research focuses on critical facets of the public security...

RESUMO Relatórios recentes de segurança cibernética evidenciam que o Brasil é um dos países com a maior quantidade de crimes cibernéticos, afetando mais de 60 milhões de pessoas e causando prejuízos estimados em mais de 20 bilhões de dólares. No âmbito da Administração Pública Federal, a Política Nacional de Segurança da Informação (PNSI) atribuiu...

In the development of new designs for systems or improvement of existing ones, the search for effective methods of reliability allocation is fundamental to achieve the minimum requirements. The different allocation methods can involve the consideration of many criteria. Among these criteria, some are quantitative, and others are qualitative, but in...

Relatórios recentes de segurança cibernética evidenciam que o Brasil é um dos países com a maior quantidade de crimes cibernéticos, afetando mais de 60 milhões de pessoas e causando prejuízos estimados em mais de 20 bilhões de dólares. No âmbito da Administração Pública Federal, a Política Nacional de Segurança da Informação (PNSI) atribuiu ao Gabi...

Goal: The purpose of the research is to apply a method of decision support to prioritize flight simulators of the Air Force Command in view of the country”s budget constraints in the defense sector. Methodology: The research was performed with the Analytic Hierarchy Process (AHP), associated with hypothesis tests to define the preference or equival...

Composition of probabilistic preferences is applied here together with life cycle assessment in the evaluation of sewage sludge treatment scenarios. The computations are based on the transformation of preferences for the alternatives elicited applying each criterion into probabilities of being the best. Different forms of probabilistic composition...

Abstract: Failure mode and effect analysis (FMEA) is the main approach for risk analysis and re- liability engineering for under development product analysis. This approach is based on a multidisciplinary understanding about the product under analysis. That is, having an approach to aggregate these different opinions, considering its uncertainties,...

This paper proposes a model to support the decision to choose which multilateral export control regime of defense products and sensitive technologies in which Brazil does not yet participate, namely, Wassenaar Arrangement, Australia Group and Zangger Committee, should be prioritized for adhesion. For the development of this model, the Analytic Hier...

Purpose This study aims to develop a risk prioritization process using failure mode and effect analysis (FMEA) in association with composition of probabilistic preferences (CPP) and weighting the risk analysis criteria. It seeks to develop decision-making considering the fast response necessary to achieve project objectives in complex scenarios, su...

Este estudo tem o objetivo de identificar as interdependências e trade-offs presentes entre os objetivos do desenvolvimento sustentável (ODS), por meio da ordenação de uma amostra aleatória de 30 municípios nas cinco regiões do Brasil, considerando as dimensões social, econômica e ambiental da sustentabilidade e utilizando indicadores relacionados...

This research aims to assist managers and technical commissions to choose professional soccer goalkeepers. A sample of 64 goalkeepers playing in Argentina and Brazil was studied. Their performance in the matches of two seasons were analyzed considering three criteria: goals against per minute played, percentage of goals and percentage of matches wi...

The Brazilian economic scenario promotes sustainable development by, among other actions, reducing the pressure on the expansion of electricity capacity. Furthermore, efficiency and reliability may be achieved through regulations and standardised production. From this perspective, there is a steadfast need for continuous improvement in the process...

Resumo: O presente trabalho apresenta um estudo de caso cuja finalidade é analisar o impacto da gestão de energia e eficiência energética do Programa Luz Solidária Enel. Este programa vem incentivando clientes de natureza residencial da Enel Distribuição Rio a adquirir eletrodomésticos com selo PROCEL no que diz respeito a redução de demanda de pon...

In the last decades, there has been an increase in impacts on the environment, driven by the industrialization process. As a result, society's social and environmental awareness increased, and business organizations began to promote corporate social responsibility initiatives to positively contribute to better working and environmental conditions,...

Industry 4.0 (I4.0) aims to link disruptive technologies to manufacturing systems, combining smart operations and supply chain management (OSCM). Maturity models (MMs) are valuable methodologies to assist manufacturing organizations to track the progress of their I4.0 initiatives and guide digitalization. However, there is a lack of empirical work...

ABSTRACT This study associates graph theory and a multi-criteria decision aid technique, presenting a different process for doing the investigation of criminal networks. In the criminal subject, privacy concerns limit identification. For this reason, the database composed of 110 actors, involving criminals and peripheral characters to the network,...

A pesquisa priorizou os projetos previstos no Programa Estratégico de Sistemas Espaciais, num contexto de austeridade econômica. Foram utilizados os critérios basilares do Programa, modelados por Processo de Análise Hierárquica (AHP), com base nas avaliações de especialistas. Os resultados indicaram a prioridade aos satélites de observação sobre os...

O objetivo do artigo é selecionar países referência para análise e desenvolvimento da navegação comercial brasileira. O País é vocacionado para explorar esse modal, dado o extenso litoral e potencial ribeirinho à navegação. Entretanto, somente 11% da carga transita por mar, embora mais barato, menos poluente e com maior capacidade que outros modais...

Disaster management operations require adequate and rapid planning to efficiently serve the affected populations. In this context, an Area of Operations must be dimensioned with the main locations capable of receiving logistic facilities. These locations need to be connected by networks capable of ensuring the flow of critical supplies. The objecti...

Goal: This paper analyses how European countries of Global Innovation Indicators (GII) present in the ranking by multicriteria support aid analysis. Design / Methodology / Approach: The methodology uses Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) for ranking countries and PROMETHÉE (Preference Ranking Organisation Method...

A strategy of multicriteria decision aid in which initial acceptance of all the alternatives is followed by an automatic classification of them is here proposed. This classification is used in the next step to limit to the alternatives in the upper class the comparisons employed to choose the best alternative. A procedure to perform the classificat...

As certificações de lâmpadas LED no país fazem parte do Programa Brasileiro de Etiquetagem (PBE), coordenado pelo Inmetro, e buscam fornecer informações sobre o desempenho dos produtos a fim de auxiliar a escolha dos consumidores e estimular a competitividade da indústria. Tendo em vista a necessidade de melhoria contínua dos processos de certifica...

This paper presents the design and results of the submission from the researchers from Universidade Federal Fluminense (UFF) to the Machine Learning Soccer Prediction Challenge, organized by the Springer Machine Learning Journal. The steps of parsing of data, building of the model and choice of a Decision Tree for predicting the results from soccer...

The recruitment of athletes with limited resources is a global problem in professional sports. In US Major League Baseball, the experience of the Oakland Athletics’ general manager in the last decade turned his “Moneyball” model into a synonym of quantitative analysis in the transfer market of baseball players. His strategy focused on hiring player...

Airlift operations are vital to support contingency plans during the major humanitarian and disaster relief (HDR) events. The access to disaster zones is often limited by unsafe conditions, poor road infrastructure, and lack of commercial air services. To overcome these limitations, the development of larger planes has allowed bulkier equipment and...

The lighting industry is having a great change with the advancement of LED technology, allowing the consumer use a more efficient product with longer lifespan, varied colors and shapes. These facts are beneficial to the consumer, but bring with them, a greater difficulty in choosing the product of better energy performance. In this work, a multicri...

América Latina está trabajando para el logro de los Objetivos del Desarrollo Sostenible (ODS) con una orientación multidimensional que transforme los modelos tradicionales de desarrollo. Ello implica, a nivel organizacional, modificar la gestión en búsqueda de un arquetipo que conjugue la racionalidad técnica y la visión humanista. En este sentido,...

Anticancer drugs used in cancer treatment are excreted unchanged or as metabolites by feces and urine in hospitals and households. These drugs enter the municipal sewage system but wastewater treatment plants are not capable of removing all of these micro pollutants. In many countries such as Brazil, sanitation departments do not provide service, n...

Resumo Este artigo teve por objetivo apresentar uma abordagem empírica ao método de Composição Probabilística de Preferências (CPP). O método CPP se destina a escolha, ordenação e classificação de alternativas em problemas multicritério. O CPP tem explorado ampla variedade de aplicações a partir de distribuições de probabilidades contínuas. Entreta...

p>A Indústria da Construção (IC) é uma das atividades produtivas de maior perigo para os trabalhadores, especialmente por ocorrência de acidentes de trabalho fatais e não fatais. Estimativas da OIT para o ano de 2012 mostram que são 2,3 milhões de mortes a cada ano, decorrentes de falta de treinamento. Estima-se que, também a cada ano, ocorram pelo...

A exploração de petróleo é uma das principais atividades industriais do País, devido à variedade dos subprodutos e empresas envolvidas no setor. Para que seja possível extrair das bacias sedimentares tal produto, é necessário investimento de grande porte e alta tecnologia. As plataformas e serviços de perfuração estão entre as principais atividades...

RESUMO: Os Objetivos do Desenvolvimento do Milênio (ODM) representam uma iniciativa global subscrita por governos, onde foram estabelecidas oito metas para as nações trabalharem estrategicamente nos desafios globais. Este trabalho possui como objetivo utilizar um método multicritério para avaliar os ODM, a partir de um conjunto de indicadores que o...

The Composition of Probabilistic Preferences is here applied to combine eight indicators of human development. The four components of HDI are considered together with indices of inequality in longevity, schooling, and income, and the UNDP Gender Development Index. To compose the probabilities of preference by the different criteria, a pessimistic a...

Os rios e lagos recebem despejos poluentes, nem sempre diluídos ou degradados. A deterioração da qualidade da água e sua escassez em grandes centros urbanos resultam da alta densidade populacional, da ocupação irregular do solo, do uso indiscriminado e do despejo de contaminantes. As investigações sobre a ocorrência de substâncias químicas no meio...

p>Os objetivos do desenvolvimento sustentável (ODS) da Organização das Nações Unidas buscam inserir o bem-estar, a redução da pobreza e a utilização eficiente dos recursos naturais na noção de desenvolvimento econômico. O Triple Bottom Line (TBL) é um modelo passível de ser parametrizado que propõe o dimensionamento da sustentabilidade nas dimensõe...

OMPI NA AMERICA LATINA

This article aims to analyze the technical performance of football teams in the FA Premier League during the 2015/2016 season. Data of twenty clubs over 38matches for each club are considered using 23 variables. These variables have been explored in the football literature and address different features of technical performance. The different confi...

This paper uses an integrated two-stage approach to assess the performance of 88 ASEAN (Association of Southeast Asian Nations) banks from 2010-2013. The relative importance of different financial ratios that emulate the CAMELS rating is collected using the expert opinions of 88 ASEAN bank managers with the help of a structured questionnaire. The c...

The article reassesses a recent case study on six bioethanol production processes in China, to develop a methodology that discriminates the most energy-efficient process. The original research explored the joint method of Life Cycle Assessment and Data Envelopment Analysis (LCA + DEA). However, DEA is sensitive to problems with a disproportionate n...

Este artigo tem como objetivo discutir o desempenho organizacional através da avaliação de medidas de eficiências de indicadores de sustentabilidade. Propõe, então, a comparar, por meio de estudo de caso, como empresas do setor de papel e celulose no Brasil se comportam em relação a temas relevantes para o seu negócio, aplicando o modelo DEA com in...

Considering the need to assess the corporate sustainability, get a compromised solution for multi-objective functions taking into account several criteria, according to their economic, environmental and social performance, usually is an important topic and a really tough problem for decision authorities. The paper presents a novel model for solving...

Las técnicas de análisis de riesgo ayudan a identificar las amenazas, problemas y anomalías de los procesos que puedan afectar la salud y seguridad de los empleados, el medio ambiente y la calidad del producto. En este artículo, utilizamos un análisis de riesgo estocástico, con simulación Monte Carlo aplicada al AMEF (análisis del efecto y modo de...

The selection of critical process equipment is step of a reliability-centred maintenance implementation and gives important information for the maintenance services schedule. In this paper, the use of Fuzzy Logic is proposed, where uncertain and imprecise judgments of decision makers during this activity are translated into fuzzy numbers. A specifi...

The objective of this article is to explore a potential diagnostic model, called “Disrupt-O-Meter”, about the Christensen's disruptive innovation theory. The diagnostic model was analyzed under multi-criteria decision aid (MCDA) methods. This diagnosis presents a typical data structure of multi-criteria ordinal problems. Different alternatives were...

Suporte à decisão para modelo de maturidade de processo utilizando lógica fuzzy a partir da perspectiva do ciclo PDCA Decision support for a process maturity model using fuzzy logic from the perspective of the PDCA cycle Resumo Este artigo apresenta um modelo para avaliação do nível de maturidade de processos, considerando uma visão geral da gestão...

A educação para o desenvolvimento sustentável representa uma oportunidade de transformação das sociedades. A preservação dos recursos naturais e produtivos para as gerações futuras pode ser potencializada através da educação básica. A Austrália utiliza um programa bem sucedido desde 2005, sendo utilizado como referência nessa pesquisa. O objetivo d...

Esse artigo é parte dos estudos preliminares para uma dissertação de mestrado que objetiva apresentar indicadores de desempenho para escolas de ensino médio do Brasil, por modelagem fuzzy, com a finalidade de diagnosticar o grau de maturidade do ensino da educação ambiental, num contexto holístico da sustentabilidade. Os indicadores de desempenho f...

The employment of the Brazilian Armed Forces against drug trafficking in urban areas, using the Operation Rio as a model, does not solve the problem of drugs and contributes to the militarization of the public security role in Brazil. An agreement between Federal and Rio de Janeiro state governments in 1994 allowed the employment of a joint task fo...