Matheus Pereira Libório

• Professor
• Researcher at Pontifical Catholic University of Minas Gerais

In Brazil, the government has historically given low attention to telecommunication infrastructure planning to predict, for instance, the Internet bandwidth in the short and medium-term, since this process can be slow and costly. Notably, smart city applications are impaired by this policy because they depend on cost-benefit technology to support t...

Esta pesquisa se insere no contexto da desigualdade urbana, que se revela, em parte, pela concentração da oferta de bens-serviços públicos em áreas mais favorecidas em detrimento de áreas menos favorecidas. Além de trazer evidências empíricas que confirmam esse entendimento, exploram-se alternativas para aumentar a progressividade dos tributos. Bus...

Internet network design specialists are looking for technologies and strategies to deliver network service under increased demand conditions. The choice of strategies is based on applying optimization and decision-making methods to select the most appropriate cable network design considering criteria established by the problem definition. However,...

The growth of Internet services over the past few years has increased the importance of Internet consumption forecasting models in telecommunications network planning activity. Most of these models use historical data of variables that, when reduced in size, form context variables: economic, innovation, technology, and Internet supply. Although the...

This research explores the relationship between the implicit importance of the variables of a multidimensional phenomenon within the context of urban inequalities and the weights attributed to these variables during the process of building a composite indicator (CI) by data-based weighting methods, such as principal component analysis (PCA). The ob...

This overview is focused on the book reflecting research results on the fundamentals of the theory of multicriteria (multiobjective and multiattribute) decision-making under conditions of uncertainty. The facet of uncertainty is formalized based on a possibilistic (not probabilistic) approach. These results are based on the fuzzy set theory and its...

The Human Development Index is a complex social phenomenon composed of multiple criteria. While many studies are concerned with dealing with outliers in the representation of this composite indicator, the problem of extreme values is overlooked. This paper introduces a new approach to constructing composite indicators specifically that addresses th...

O ambiente de inovação de um país desempenha papel importante para atração de investimentos diretos estrangeiros o que ajuda a gerar oportunidades e impulsionar o desenvolvimento econômico e, por consequência, a melhorar as condições de vida da população. Para mensurar a qualidade desse ambiente, por ser um fenômeno complexo e estar relacionado com...

RESUMO Este estudo propõe o Indicador Multicomposto de Pobreza como uma nova medida abran-gente da pobreza nos municípios brasileiros. Utilizando o método da Média Ponderada Ordenada

This research presents an innovative method for constructing composite indicators: the Subjective–objective method of maximizing extracted variance (Sommev). Sommev’s hybrid weighting approach fills an important gap within a highly controversial area of the composite indicators’ literature, which criticizes the statistical assignment of weights dis...

This research provides an overview of the challenges in analyzing multidimensional social exclusion data using multiple indicators. It highlights the importance of composite indicators in simplifying the understanding of complex realities. Grounded in this literature, the research proposes a new approach to address the issues related to the multisp...

The Ordered Weighted Averaging (OWA) operator is a multicriteria method that has conquered space among researchers in the composite indicators field. Typically, OWA operator weights are defined by the decision maker. This type of weighting is highly criticized, as decision-makers are susceptible to errors and bias in judgment. Some methods have bee...

The Benefit-of-the-Doubt is one of the most popular methods for constructing composite indicators, with the main characteristic being the endogenous and individualized weighting of sub-indicators, which minimizes conflicts related to this definition. Greater weights are assigned to sub-indicators with the highest value, and smaller weights are assi...

This research introduces a new data-driven methodology for fault detection and isolation in dynamic systems, integrating fuzzy/Bayesian change point detection and decision trees induced by genetic programming for pattern classification. Tracking changes in sensor signals enables the detection of faults, and using decision trees generated by genetic...

This research addresses the problem of multi-objective resource allocation or resource deficits, offering robust answers to planning decisions that involve the elementary question: "How is it done?". The solution to the problem is realized using the general scheme of multi-criteria decision-making in uncertain conditions. The bases of the proposed...

Composite indicators are one-dimensional measures that help decision-makers understand complex realities. Existing software builds composite indicators using different methods, also providing a measure of the stability of their structure. Considering this, it is possible to point out that there is a gap for software that provides more quality measu...

Esta pesquisa analisa a eficiência de incentivos concedidos às Pequenas e Microempresas (PMEs) em contratações públicas. Por meio do Particle Swarm Optimization e do algoritmo K-médias simulou-se a atuação de PMEs com diferentes capacidades financeiras. Os resultados mostram que as PMEs podem elevar seus lucros em até 1,42 vezes ao adotar uma estra...

This paper reflects the results of research analyzing models of multi-attribute decision-making based on fuzzy preference relations. Questions of constructing the corresponding multi-attribute models to deal with quantitative information concomitantly with qualitative information based on experts’ knowledge are considered. Human preferences may be...

Geographic Information Systems (GIS) are programs that connect math, science, and social science concepts with many resources for teachers to provide and integrate activities with math and science. This paper reflects on proposals to merge Mathematics and Geography when teaching undergraduates from inter-and trans-disciplinary spatial models using...

This research offers a solution to a highly recognized and controversial problem within the composite indicator literature: sub-indicators weighting. The research proposes a novel hybrid weighting method that maximizes the discriminating power of the composite indicator with objectively defined weights. It considers the experts’ uncertainty concern...

This paper analyses the effect of the public entity's bad reputation on the prices of products purchased in electronic auctions. To do so, we used the analytical hierarchical process, considering critical criteria for the decision of suppliers to participate in electronic auctions. Data from 25,001 electronic auctions reveal that public entities wi...

Sheep farming faces various health challenges, including gastrointestinal nematodes (in this study, specifically Haemonchus contortus ), which pose a threat to infected animals. In response to this issue, the use of herbal medicines derived from medicinal plants is gaining popularity as an alternative for controlling these parasites. This approac...

Spatially heterogeneous weights and a non-compensatory aggregation scheme, are two important properties needed to construct a composite indicator capable of summarizing properly the multidimensional phenomenon of local spatial units. Such a composite indicator takes into account, on the one hand, the latent characteristics of the specific units rel...

Web Geographic Information Systems (WebGISs) were widely used to monitor COVID-19 cases and deaths during the pandemic. Furthermore, geotechnologies were also very useful in education, public management, tourism, and other areas. Although there are WebGISs with a high level of sophistication, most are simple, consisting of geovisualizers of cases,...

There is no lack of studies dealing with the consistency of evaluations performed by pairwise comparison in the decision-making literature. Mostly, these studies ofer algorithms for reducing the inconsistency of evaluations and indices to measure the evaluation’s consistency degree. The focus on these two research fronts does not cover all the gap...

O objetivo desta pesquisa é examinar a literatura sobre contratações públicas nacionais e internacionais aderentes à abordagem teórica da Análise Econômica do Direito. Em seguida, analisar a parcela da literatura sobre contratações públicas cujo enfoque seja na mitigação dos custos de transação e promoção do bem-estar social, convergindo os conceit...

This present work aimed at enhancing ore exports and reduce demurrage fines and costs at the port's mining company using multicriteria decision-making models and methods. The global mining supply chain encompasses multiple stages, with port production logistics being a crucial aspect. This stage involves planning the production volume allocated to...

This research aims at developing methodological tools for decision makers (DMs) to determine the locations for generating sites for hybrid renewable energy systems, considering complementarity characteristics of the corresponding sources and their seasonal availability. The decision process on new sites starts using Geographic Information Systems f...

Social phenomena are multidimensional and dependent on geographic space. Numerous methods are capable of representing multidimensional social phenomena through a composite indicator. Among these methods, principal component analysis (PCA) is the most used when considering the geographical perspective. However, the composite indicators built by the...

This research proposes a decision framework that allows for the identification of the most suitable methods to construct stable composite indicators that capture the concept of multidimensional social phenomena. This decision framework is applied to discover which method among six best represents the social exclusion of eight medium-sized Brazilian...

Many papers offer methods for preparing a systematic literature review. These methods assume that the researchers have some experience in research, are proficient in English, and that the research objective is solely a literature review. This article presents a systematic method for preparing a literature review aimed at novice researchers who have...

Geotechnologies were widely used during the pandemic period. The use of geotechnologies was not restricted to monitoring, controlling, and combating the pandemic. Research published in Brazil and worldwide has revealed the usefulness of geotechnologies for education, tourism, and waste management. Naturally, geotechnologies have also been widely us...

The English version of this article is titled: Method of preparing an international and national literature review for novice researchers and is available at: https://www.sciencedirect.com/science/article/pii/S2215016123001656

Embora os conceitos de riscos geológicos estarem intrínsecos em nosso cotidiano pouco se sabe sobre os mecanismos de ruptura e seus efeitos gerados por agentes internos dos maciços e/ou taludes. Esta pesquisa tem como objetivo desenvolver um WebGIS de monitoramento de riscos geológicos. A partir do desenvolvimento do WebGIS, esta pesquisa oferece c...

This research investigates the effects of late payments on the performance of micro and small companies in public procurement. The study uses 214,564 records of electronic auctions performed by public buyers between 2016 and 2018 in Minas Gerais, Brazil. The theoretical framework is supported in the transaction costs literature and the operational...

This research explores an emerging topic in the economic literature: the nowcasting of macroeconomic indicators with alternative data. The research reveals that alternative data is a concept in consolidation, presenting controversies that make it challenging to discover the literature of interest. The analysis of 364 papers indicates that including...

The weighting of sub-indicators is widely debated in the composite indicator literature. However, these weighting schemes’ effects on the composite indicator’s spatial dependence property are still little known. This research reveals a direct relationship between the weighting scheme of sub-indicators and the spatial autocorrelation of the composit...

Esta obra foi desenvolvida com o objetivo de contribuir com o estudo das cidades e suas diferenciações internas. Para isso, ao longo dos capítulos, são apresentadas e analisadas diversas metodologias e técnicas estatísticas para a produção de indicadores de síntese sobre temas sociais complexos, como a exclusão social, a desigualdade e a pobreza. P...

Alternative data are now widely used in economic analyses worldwide but still infrequent in studies on the Brazilian economy. This research demonstrates how alternative data extracted from Google Trends and Google Mobility contribute to innovative economic analysis. First, it demonstrates that the search for the future on the internet is correlated...

The object of this research is the relationship between Transaction Costs and economic performance. Weak or unreliable institutions open space for corruption, generating a negative externality, increasing the economy's Transaction Costs, inhibiting doing business, and reducing economic growth. Although there is a broad debate about the negative rel...

Remote sensing techniques permit characterizing urban landscapes through urban spectral indices that distinguish built from unbuilt areas. These indices are considered a good proxy for economic activity as they reflect the development of the country, state, or municipality. However, urban spectral indices easily confuse built-up areas with bare lan...

The weighting of sub-indicators is a controversial topic in the literature, being the object of investigation by many researchers. The absence of a clear definition for the most appropriate sub-indicator weighting scheme has led researchers to combine subjective and objective weighting schemes. In this work, an innovative sub-indicator weighting sc...

This research explores the relationship between COVID-19 and social vulnerability on an intra-urban scale. For this, two composite indicators of social vulnerability have been constructed. The composite indicator constructed by the Benefit-of-the-Doubt considers spatial heterogeneity. It weakly captures the conceptually most significant individual...

The weighting of sub-indicators is a relevant problem in the composite indicators literature and impacts several fields of science. None of the existing weighting approaches, Equal-Weights, Data-Driven, and Participatory, is exempt from criticism. Specifically, weights obtained by the Participatory approach are associated with two frequent problems...

Principal component analysis (PCA) is a popular technique for building social indicators in the field of spatial analysis. However, literature shows that there is no consensus on how to apply PCA to longitudinal studies, and researchers have done the analysis using different approaches, varying the way data are combined and the frequency in which t...

Esta pesquisa analisa o efeito da reputação de compradores públicos do estado de Minas Gerais nos preços de aquisição de produtos em pregões eletrônicos. A reputação de seis compradores públicos foi obtida por meio do Analytic Hierarchy Process, a partir dos critérios inadimplência, atrasos de pagamento, especificações mal definidas, burocracia exc...

Composite indicators are one-dimensional measures of multidimensional phenomena. Through the composite indicators, it is possible to have a single map of the different subindicators of poverty, inequality, sustainability, and economic development. This research employs two well-known methods of building composite indicators to represent the social...

No setor de saúde, a análise e mensuração da eficiência é amplamente estudada, contudo, sua relação com fatores contingenciais permanece pouco explorada, em vista disso, contém lacunas teóricas e metodológicas. Nesse sentido, objetivo do presente estudo é analisar as contingências que impactam na eficiência dos sistemas de saúde municipais. No intu...

The representation of social phenomena has been associated with substantial conceptual and operational difficulties. Social phenomena have a complex multidimensional nature that leads to different conceptualizations and measurements. This problem makes it difficult to choose the sub-indicators to be considered in the composite indicator of the phen...

Alternative data are now widely used in economic analyses worldwide but still infrequent in studies on the Brazilian economy. This research demonstrates how alternative data extracted from Google Trends and Google Mobility contribute to innovative economic analysis. First, it demonstrates that the search for the future on the internet is correlated...

As constantes inovações tecnológicas vêm alterando a forma das pessoas se relacionarem, imprimindo no espaço geográfico um dinamismo frutificado dessa evolução tecnológica, sobretudo aquelas associadas à localização geográfica. Neste contexto, os serviços baseados em localização se disseminaram com os avanços das tecnologias móveis, assumindo posiç...

The World Bank's ease-of-doing-business index (EDBI) is the most popular instrument for measuring countries' business environment conditions. Although useful to direct investments and guide reforms, researchers associate EDBI with problems such as analyses from very different countries, and data quality and calculation errors. This research seeks t...

This research investigates the effects of late payments on the performance of micro and small companies in public procurement. The study uses 214,564 records of electronic auctions performed by public buyers between 2016 and 2018 in Minas Gerais, Brazil. The theoretical framework is supported in the transaction costs literature and the operational...

This paper analyses the effect of the public entity’s bad reputation on the prices of products purchased in electronic auctions. To do so, we used the Analytical Hierarchical Process, considering critical criteria for the decision of suppliers to participate in electronic auctions. Data from 25,001 electronic auctions reveal that public entities wi...

Studies carried out in different countries correlate social, economic, environmental, and health factors with the number of cases and deaths from COVID-19. However, such studies do not reveal which factors make one country more exposed to COVID-19 than other. Based on the composite indicators approach, this research identifies the factors that most...

The aggregation of variables is one of the most critical procedures in the building of Composite Indicators. Most of the debate is about the issue of compensation between variables with poor and above-average performance. Researchers understand that non-compensatory aggregation is more appropriate than compensatory aggregation for measuring multidi...

Este estudo investiga os efeitos gerados pela Compensação Financeira pela Exploração Mineral (CFEM) como norma, no tocante à promoção de bem-estar social em municípios de Minas Gerais no período de 2017 a 2019. Para tal, ponderam-se os objetivos de desenvolvimento sustentável da Organização das Nações Unidas (ONU), mais especificamente a educação,...

Essa pesquisa tem como objetivo sintetizar e sistematizar o conhecimento acumulado sobre contratações públicas na perspectiva da Análise Econômica do Direito no Brasil. A partir dessa síntese e sistematização são apresentadas contribuições para aumentar o interesse pela Análise Econômica do Direto, estimular pesquisas e gerar conhecimentos para que...

The World Bank’s Ease of Doing Business Index (EDBI) has been widely used in analyzes of attracting investments and formulating public policies. Despite its importance in signaling the quality of the countries’ business environment, research shows that EDBI does not always offer reliable analyzes. The literature shows that the use of EDBI is associ...

Composite Indicators are one-dimensional measurements that simplify the interpretation of multidimensional phenomena that facilitate public policies' elaboration. The literature on composite indicators is abundant, diversified, and inserted in practically all knowledge areas. Part of this literature aims to reduce uncertainties that propagate throu...

The prioritization of Research, Development & Innovation Projects is an essential step in the innovation management process. As a rule, it is carried out applying methods that allow one to process experts' preferences concerning each project according to established criteria. However, there are different preference formats which experts can utilize...

Intra-urban inequality is not strictly defined and therefore cannot be measured accurately. The literature shows that the measurement of inequality varies depending on the judgment of the experts and that this judgment can be realized in several ways. Taking this into account, the capabilities created using fuzzy set theory and consensus schemes ca...

Although there are many studies concerned with the problem of weighting composite indicators, which includes procedures for obtaining weights from expert opinion, little attention is paid to the way experts assess the weights of individual indicators or the effect that Conversion of the evaluation format exerts on the levels of consensus. This rese...

Quais são os efeitos dos atrasos de pagamentos na atuação das Pequenas e Microempresas (PME) no processo de contratação pública? Quais são os efeitos da introdução de um mecanismo normativo/legal que suprime a cláusula que permite compradores-públicos atrasar os pagamentos? Saber o efeito dessas cláusulas nos Custos de Transação (CT) é um passo imp...

O livro "História da Guerra do Peloponeso", escrito pelo estratego grego Tucídides no século V a.C., relata boa parte da guerra fratricida entre Atenas e Esparta, que durou 27 anos. Contudo, ao leitor contemporâneo, algumas passagens desta obra não podem ser compreendidas sem ajuda de mapas e datas. Para minimizar esse problema, e aproximar o leito...

Several studies relate institutions and Transaction Costs (TC) based on regulatory aspects. Weak or unreliable institutions open space for corruption, producing as a negative externality the increase in the TC of the economy, the inhibition of doing business, and the reduction of economic growth. Although there is a wide debate about the negative r...

The World Bank’s ease-of-doing-business index (EDBI) is the most popular instrument for measuring countries’ business environment conditions. Although useful to direct investments and guide reforms, researchers associate EDBI with problems such as: analyses from very different countries, data quality and calculation errors. This research seeks to o...

The installation of lightning detection sensor systems involves a large volume of resources. However, the absence of these systems can lead to irreparable damage, such as the death of a person. How to reduce the costs of implementing these systems to protect workers and citizens or even public and private equipment? Usually, this problem is not sol...

A previsão do consumo de eletricidade é essencial para as concessionárias de distribuição de energia elétrica uma vez que pode auxiliar, principalmente, nas decisões relacionadas ao core business dessas empresas. Este trabalho apresenta modelos lineares para a previsão de demanda de energia elétrica, a curto e médio prazos, de uma concessionária. O...

Atualmente utilizamos mecanismos de localização o tempo todo. Em poucos anos, os dispositivos GPS-"Global Positioning System"-de navegação se popularizaram e, mais recentemente, com os "smartphones" com GPS embutido, os aplicativos nomeados "localizadores" atingiram seu ápice. Aplicações como o Google Earth, Google Maps, e outras inúmeras possibili...

Composite indicators are almost always determined by methods that aggregate a reasonable number of manifest variables that can be weighted-or not-as new synthesis variables. A problem arises when these aggregations and weightings do not capture the possible effects that the various underlying dimensions of the phenomenon have on each other, and con...

Objective: This research seeks to reveal the real interest of the marketing researchers by the geomarketing issue, and to show how methodological aspects (implications of locational methods) and theoretical (conceptual differences) act in the stagnation and the low participation of the scientific production of studies of geomarketing. Method: Data...

Explora-se nessa pesquisa o desenvolvimento de uma geotecnologia de geovisualização para monitorar propriedades participantes de um Programa de Pagamento por Serviços Ambientais (P-P-PSA). A literatura revela uma ampla aplicação de geotecnologias na área ambiental, e que esse meio informacional é caracterizado pelo seu baixo custo, facilidade de us...

Essa pesquisa teve como objetivo oferecer evidências empíricas para responder a quatro perguntas. Quais são as principais áreas de aplicação de Sensoriamento Remoto (SR) no Brasil? Qual é a participação relativa de cada área de aplicação nas pesquisas da área da geografia do Brasil? Qual é a proporção de utilização do Classificador Máxima Verossimi...

A sobreposição de mapas em diferentes escalas está associada a problemas geométricos, da falácia ecológica e da mudança de suporte espacial. Essa pesquisa analisa trabalhos publicados (2014-2019) nas principais revistas de geografia do Brasil que se inserem no contexto do problema da mudança de suporte de dados geográficos. Além de trazer evidência...

Em novembro de 2015 ocorreu um dos maiores desastres ambientais já registrados em Minas Gerais e no Brasil, o rompimento da barragem de rejeitos de Fundão. Neste estudo, o objetivo é mensurar a área atingida mais próxima ao rompimento da barragem para quantificar os impactos gerados ao meio ambiente. Para isso, foram utilizadas ferramentas, técnica...

Purpose The purpose of this paper is to present the innovation management program (IMP) (FAZ Program) and analyze its results according to the public policy goals that support it (Pró-Inova) suggesting improvements. Design/methodology/approach Intensive-direct-observation method in 43 companies; systematic data gathering and analysis (172 meeting...

Nessa pesquisa abordamos problemas associados às informações sem contexto espacial na segurança pública, mais especificamente no Ministério Público do Rio Grande do Norte (MPRN). Mostramos que informações sem contexto espacial dificultam a análise investigativa, podendo aumentar o tempo de investigação e enfraquecer estratégias. Para tratar este pr...

Dado o crescimento da demanda de energia elétrica das usinas de geração de energia, faz-se necessário um conjunto de ferramentas e tecnologias para organizar, processar e fornecer informações que contribuam para o aumento da oferta de energia. A falta de informação sobre os cenários ambientais nas regiões onde as usinas podem ser implantadas termin...

Given the growth of electrical energy demand from power generating plants, a set of tools and technologies to organize, process and provide information that contribute to the increased supply of energy are required. The lack of information regarding the environmental scenarios in the regions where power plants might be established may lead to ineff...