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Relatórios Técnicos

No. RT: DComp-TR-001/2014
Autores: Angelina V. S. Melaré, Sahudy Montenegro González, Katti Faceli
Titulo: Tecnologias e Sistemas de Suporte à Decisão como apoio na Gestão de Resíduos Sólidos: uma Revisão Sistemática
Data: 12/2014
Resumo: O crescimento populacional aliado à migração da população para áreas urbanas e o desenvolvimento industrial criou um relação de consumo que gerou problemas relacionados ao meio ambiente, as questões sociais e econômicas. Com relação ao meio ambiente um preocupação crítica é a falta de controle e gestão adequada dos resíduos sólidos gerados nos centros urbanos. Entre os desafios, se encontram a gestão de coleta, tratamento e destinação adequada, com destaque para a gestão sustentável e adoção do conceito dos 3R (Redução, Reutilização e Reciclagem). Este Relatório Técnico realiza uma Revisão Sistemática que investiga as soluções adotadas pelos países desenvolvidos e em desenvolvimento, para o problema ambiental da Gestão dos Resíduos Sólidos Urbanos com o emprego da Tecnologia da Informação e Comunicação e Pesquisa Operacional. Tais soluções podem ser propostas usando projetos ou implementações que englobem a área de Sistema de Apoio a Decisão. São predominantes nas publicações selecionadas tecnologias e sistemas integrados, como os Sistemas de Informação Geográfica, Identificação por Rádio Frequência, Métodos de Otimização (Fuzzy, Algoritmos Genéticos, Colônia de Formigas, Pesquisa Tabu, Redes Neurais, Programação Linear) e técnicas de Análise de Decisão Multicritério (AHP, ANP, Electre).

 

No. RT: DComp-TR-002/2016
Autores: Katti Faceli, Tiemi C. Sakata
Titulo: Multiple solutions in cluster analysis: partitions x clusters
Data: 05/2016
Resumo: Techniques for obtaining multiple clustering solutions are essential to knowledge extraction in many fields, as they may offer different interpretations of the data. Some of the challenges in discovering multiple clustering solutions refers to obtaining solutions which contain highly differing and high quality clusters, flexibility of approaches regarding different cluster’s definitions and the need for benchmark data and a quality assessment methodology. In this paper, we tackle these challenges by (i) providing a methodology for evaluating a set of multiple clustering solutions with respect to domain knowledge available, considering the clusters themselves as solutions instead of the usual partitions; (ii) providing a benchmark for the proposed assessment methodology; (iii) investigating the suitability of techniques based on traditional clustering algorithms for the discovery of high quality clusters considering flexibility regarding different cluster’s definitions; and (iv) proposing a simple mechanism for extracting relevant clusters given a collection of partitions. Moreover, besides being used for clustering evaluation, we point out that the clusters themselves could be viewed as the multiple clustering solutions, with great benefits in several aspects of cluster analysis.

 

No. RT: DComp-TR-003/2016
Autores: Angelina V. S. Melaré, Sahudy Montenegro González, Katti Faceli
Titulo: AcheSeuEcoponto: aiding Brazilian cities in the proper disposal of solid waste
Data: 10/2016
Resumo: Population growth combined with industrial development and increasing consumption has caused several problems related to solid waste management, such as inadequate disposal. Due to global pressures and new policies such as the Brazilian Solid Waste National Policy, managers need to find solutions to reduce, reuse and recycle waste. Information and Communication Technologies and Geographical Information Systems are used worldwide in solutions for waste management. This work presents a system, called AcheSeuEcoponto, which aims to assist the population to properly allocate their solid residues. This tool was developed using Geo and Web technologies based on an architecture of four modules. The tool offers some functionalities to citizens, such as querying the nearest drop-off centre by residue type, map visualization and directions. The social network module allows us to disseminate the system, thus, the drop-off centres. In addition, the tool provides managers with strategic reports related to areas lacking of disposal points, the most popular points and the public profile. We answered questions that measure the scope of the system, the influence of Web technologies on the dissemination of AcheSeuEcoponto, and the public profile and their knowledge about disposal centres. For this purpose, we collected data using a questionnaire and a Web analytics service. Some results were expected, but the percentage of people who showed a lack of knowledge of drop-off centres was beyond expectations, highlighting the importance of research within the context of solid waste management.