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DEVELOPING AND EVALUATING NEW ALTERNATIVES FOR URBAN MOBILITY: A CASE STUDY OF A BRAZILIAN CITY
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Oliveira, Rayara Sirlei Mauricio de

; Morais, Danielle Costa

; Siebert, Johannes

Pesquisa Operacional

Métricas del periódico
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2023, Volumen 43 Nº spe1 elocation e263440

Resumen: En | Texto: En | PDF: En

ABSTRACT Mobility and urban planning are challenging tasks for public authorities, especially in densely populated cities. The city of Olinda, Pernambuco-Brazil, faces problems in traffic and access to places, making it necessary to identify new alternatives to improve urban mobility in Olinda. This study presents a decision support model to develop and evaluate new alternatives to do so. In the decision frontend, Value-Focused Thinking was applied to identify objectives and their respective attributes, and to create alternatives based on these objectives. As a result, 69 alternatives were generated, concatenated into 48, and categorized into four groups. Group 1 and Group 2 comprise 30 alternatives that serve the city’s north side; however, they attend to the neighborhoods separately. Group 3 comprises 11 alternatives routes that serve the two areas together, this being the focus of this study, and Group four consists of 7 short-term alternatives. In the decision backend, the FITradeoff for ranking problematic method was applied to evaluate the 11 alternatives of Group 3. The study showed that it would be possible to improve mobility more urgently by making a few improvements to the itinerary on the existing routes. Therefore, the study discusses the possibility of starting to make progress in the urban system of the city by using fewer complex alternatives compared to setting up new routes.

https://doi.org/10.1590/0101-7438.2023.043spe1.00263440

Multicriteria negotiation model for selecting sustainable suppliers’ problem in the agribusiness
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Causil, Over Manuel Montes

; Morais, Danielle Costa

Production

Métricas del periódico
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2023, Volumen 33 elocation e20220090

Resumen: En | Texto: En | PDF: En

Abstract Paper aims The objective of this research is to propose a multicriteria negotiation model for selecting a sustainable packaging supplier in the food industry. The model aims to minimize the environmental, social and economic impacts of the production process of plastic while ensuring the operational criteria of packaging. Originality Despite the high number of scientific research using multicriteria decision-making suggested to select a supplier, the proposed negotiation model is innovative as it includes green manufacturing as a criterion for negotiation, alongside price and delivery time, to promote sustainable supply chain management. Research method The research method involves three stages: pre-negotiation, negotiation (based on FITradeoff), and post-agreement. The proposed model is illustrated using a case study of a Colombian slaughterhouse that needs to select a sustainable packaging supplier for the next two years. Main findings The main findings indicate that the proposed model that uses the FITradeoff for negotiation solves the problem of selecting sustainable packaging suppliers while promoting sustainable supply chain management in the agribusiness sector. Implications for theory and practice The model has implications for both theory and practice. It encourages interdependent companies to collaborate and enhances efficiency in greener terms for supply chains, buyer and seller firms. The proposition of an original integrative negotiation protocol for selecting sustainable suppliers in agribusiness can provide enterprises with a set of negotiation parameters to achieve successful sustainable supply chain management.

https://doi.org/10.1590/0103-6513.20220090

Fast surveillance response reveals the introduction of a new yellow fever virus sub-lineage in 2021, in Minas Gerais, Brazil
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Andrade, Miguel Souza

; Campos, Fabrício Souza

; Oliveira, Cirilo Henrique de

; Oliveira, Ramon Silva

; Campos, Aline Alves Scarpellini

; Almeida, Marco Antônio Barreto de

; Fonseca, Vagner de Souza

; Simonini-Teixeira, Danilo

; Sevá, Anaiá da Paixão

; Temponi, Andrea Oliveira Dias

; Magalhães, Fernando Maria

; Chaves, Danielle Costa Capistrano

; Pereira, Maira Alves

; Lamounier, Ludmila Oliveira

; Menezes, Givaldo Gomes de

; Aquino-Teixeira, Sandy Micaele

; Gonçalves-dos-Santos, Maria Eduarda

; Bernal-Valle, Sofía

; Müller, Nicolas Felipe Drumm

; Cardoso, Jader da Cruz

; Santos, Edmilson dos

; Mares-Guia, Maria Angélica

; Albuquerque, George Rêgo

; Romano, Alessandro Pecego Martins

; Franco, Ana Cláudia

; Ribeiro, Bergmann Morais

; Roehe, Paulo Michel

; Abreu, Filipe Vieira Santos de

Memórias do Instituto Oswaldo Cruz

Métricas del periódico
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2022, Volumen 117 elocation e220127

Resumen: En | Texto: En | PDF: En

BACKGROUND In Brazil, the yellow fever virus (YFV) is maintained in a sylvatic cycle involving wild mosquitoes and non-human primates (NHPs). The virus is endemic to the Amazon region; however, waves of epidemic expansion reaching other Brazilian states sporadically occur, eventually causing spillovers to humans. OBJECTIVES To report a surveillance effort that led to the first confirmation of YFV in NHPs in the state of Minas Gerais (MG), Southeast region, in 2021. METHODS A surveillance network was created, encompassing the technology of smartphone applications and coordinated actions of several research institutions and health services to monitor and investigate NHP epizootics. FINDINGS When alerts were spread through the network, samples from NHPs were collected and YFV infection confirmed by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and genome sequencing at an interval of only 10 days. Near-complete genomes were generated using the Nanopore MinION sequencer. Phylogenetic analysis indicated that viral genomes were related to the South American genotype I, clustering with a genome detected in the Amazon region (state of Pará) in 2017, named YFVPA/MG sub-lineage. Fast YFV confirmation potentialised vaccination campaigns. MAIN CONCLUSIONS A new YFV introduction was detected in MG 6 years after the beginning of the major outbreak reported in the state (2015-2018). The YFV strain was not related to the sub-lineages previously reported in MG. No human cases have been reported, suggesting the importance of coordinated surveillance of NHPs using available technologies and supporting laboratories to ensure a quick response and implementation of contingency measures to avoid YFV spillover to humans.

https://doi.org/10.1590/0074-02760220127

Developing and prioritizing lean key performance indicators for plastering supply chains
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Oliveira, Ana Carolina de

; Silva, Wesley Douglas Oliveira

; Morais, Danielle Costa

Production

Métricas del periódico
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2022, Volumen 32 elocation e20220054

Resumen: En | Texto: En | PDF: En

Abstract Paper aims The aim of this study was to propose a hybrid approach to develop and prioritize the indicators which should be used to monitor the development of plastering supply chains while using lean manufacturing practices. Originality This approach proposed the integration of a Balanced Scorecard (BSC) - a multi-perspective tool for performance evaluation and strategic planning, and FITradeoff for the ranking problematic – a multicriteria method that features a robust axiomatic structure and uses partial information. Research method The results showed that the approach provided a set of indicators to assist the company’s manager to monitor and improve the company's competitiveness and sustainability. Main findings The results showed that the approach was able to provide a set of KPIs to assist the company’s manager to monitor and improve the plastering company management in terms of competitiveness and sustainability. Implications for theory and practice The results allowed evaluation of important issues for the strategic, economic, and environmental stability in complex business environments.

https://doi.org/10.1590/0103-6513.20220054

Risk factors associated with intramammary colonization with Mollicutes in dairy cattle from Southeast Brazil
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Morais, Ana Carolina Nunes de

; Pires, Danielle Regis

; Cunha, Nathalie Costa da

; Machado, Leandro dos Santos

; Helayel, Michel Abdalla

; Mendonça, Juliana França Monteiro de

; Souza, Guilherme Nunes de

; Barreto, Maria Lucia

; Nascimento, Elmiro Rosendo do

Ciência Rural

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2021, Volumen 51 Nº 8 elocation e20200694

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: Bactérias da Classe Mollicutes estão associadas à infecção intramamária e diminuição da produção leiteira. O objetivo deste estudo foi investigar a ocorrência de Mollicutes e elucidar seus fatores de risco em rebanhos leiteiros do sudeste brasileiro. Para isso, amostras de leite de 387 vacas em lactação dos estados de Minas Gerais, Rio de Janeiro e São Paulo foram submetidas à reação em cadeia da polimerase (PCR) para detectar Mollicutes. Espécies de Mycoplasma foram investigadas nas amostras positivas por PCR, incluindo Mycoplasma bovis, M. alkalescens, M. bovigenitalium, M. bovirhinis, M. arginini e A. laidlawii. Foi aplicado um questionário epidemiológico para a coleta de dados sobre possíveis fatores de risco, que foram avaliados pelo teste de Qui-Quadrado de Pearson seguido de odds ratio (P≤0.05). Mollicutes foram detectados em 21% (4/19) dos rebanhos e 4% (16/387) dos animais, enquanto 1% (5/387) destes foram positivos para m. bovis, 3% (11/387) para m. arginini, sendo todas as amostras negativas para os demais agentes. Rebanhos com mais de 150 animais [OR=3,51 (95% IC 1,11-11,08)], ordenha manual [OR=9,97 (95% IC 2,80-35,49)] e ausência de linha de ordenha [OR=6,54 (95% IC 1,92-22,29)] foram considerados fatores de risco. A presença dessas condições pode favorecer a infecção intramamária por Mollicutes em rebanhos leiteiros no sudeste do Brasil. Este é o primeiro relato de M. bovis no Rio de Janeiro e M. arginini nos estados estudados.

ABSTRACT: Bacteria of Mollicutes Class are associated with intramammary infection and decrease in milk production. This study investigated the occurrence of Mollicutes and elucidated their risk factors in dairy herds from Southeast Brazil. For this, milk samples from 387 lactation cows from Minas Gerais, Rio de Janeiro and São Paulo States were subjected to the polymerase chain reaction (PCR) to detect Mollicutes. Species of Mycoplasma were investigated in Mollicutes positive samples by PCR, including Mycoplasma bovis, M. alkalescens, M. bovigenitalium, M. bovirhinis, M. arginini and A. laidlawii. An epidemiological questionnaire was applied to collect data on possible risk factors, which were assessed using Pearson’s Chi-square test followed by odds ratio (P≤0.05). Mollicutes were reported in 21% (4/19) of the herds and 4% (16/387) of the animals, while 1% (5/387) were positive for M. bovis and 3% (11/387) for M. arginini. All samples were negative to the other agents. Herds with more than 150 animals [OR=3.51 (95% CI 1.11-11.08)], manual milking [OR=9.97 (95% CI 2.80-35.49)] and not-milking animals with mastitis last [OR=6.54 (95% CI 1.92-22.29)] were risk factors. The presence of these conditions may favor intramammary infection by Mollicutes in dairy herds from Southeast Brazil. This is the first report of M. bovis in Rio de Janeiro and M. arginini in the studied states.

https://doi.org/10.1590/0103-8478cr20200694 115 descargas

Extraction and evaluation of tannin from green coconut mesocarp
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Morbeck, Fernanda Lago

; Lelis, Roberto Carlos Costa

; Schueler, Maria Vanessa Egger

; Santos, Wanessa Aparecida

; Sampaio, Danielle Affonso

; Silva, Bruno Couto da

; Morais, Rayssa de Medeiros

; Santana, Gregório Mateus

Matéria (Rio de Janeiro)

Métricas del periódico
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2019, Volumen 24 Nº 3 elocation e12433

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO O desenvolvimento de alternativas para o aproveitamento da casca de coco possibilita a redução da disposição inadequada de resíduos sólidos e proporciona uma nova opção de rendimento junto aos locais de produção. O presente trabalho tem como objetivo avaliar o potencial de extração de taninos do mesocarpo de coco verde e sua capacidade adesiva. A extração do tanino foi feita em água com adição de sulfito de sódio a 0%, 1%, 5% e 8%. Em seguida, observou-se qual dessas extrações demonstrou melhores rendimentos e características para ser usado como agente adesivo. A concentração de sulfito de sódio a 5% possibilitou maior rendimento na extração de taninos. Quando comparado com fenol-formaldeído, o tanino apresentou características adesivas similares como viscosidade 153,84 cp e teor de sólido 54,57%. Para a análise de espectroscopia FT-IR foram utilizadas amostras secas do mesocarpo do coco. Os picos observados no espectro de infravermelho do mesocarpo do coco verde são característicos de taninos encontrados em biomassa, apresentando características químicas desejáveis para ser utilizado como agente adesivo. O mesocarpo do coco é um material com potencial para extração de taninos a ser empregados na colagem de painéis.

ABSTRACT The development of alternatives for reuse of coconut shell allows inadequate solid residues disposal reduction and provides a novelty option close to the production sites. This paper aims to evaluate the tannin extraction potential of the green coconut mesocarp, as well as its adhesive capacity. Tannin extraction was performed with sodium sulfite diluted in water at 0%, 1%, 5% and 8% concentrations. It was observed which extraction resulted in better yield and characteristics to be used as an adhesive agent. The concentration of sodium sulfite at 5% allowed higher yields of tannin extraction. When compared to phenol formaldehyde, the tannin had similar adhesive characteristics such as 153.84 cp viscosity and 54.57% solid content. For the FT-IR spectroscopy analysis, dry samples of the coconut mesocarp were used. The peaks observed in the infrared spectrum of the green coconut mesocarp are characteristic of tannins found in biomass, presenting desirable chemical characteristics to be used as an adhesive agent. The coconut mesocarp is a material with potential for tannin extraction, making it suitable to be used in the gluing of panels.

https://doi.org/10.1590/s1517-707620190003.0748 1959 descargas

Water distribution network segmentation based on group multi-criteria decision approach
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Fontana, Marcele Elisa

; Morais, Danielle Costa

Production

Métricas del periódico
- Sobre o periódico
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2017, Volumen 27 elocation e20162083

Resumen: En | Texto: En | PDF: En

Abstract A correct Network Segmentation (NS) is necessary to perform proper maintenance activities in water distribution networks (WDN). For this, usually, isolation valves are allocating near the ends of pipes, blocking the flow of water. However, the allocation of valves increases costs substantially for the water supply companies. Additionally, other criteria should be taking account to analyze the benefits of the valves allocation. Thus, the problem is to define an alternative of NS which shows a good compromise in these different criteria. Moreover, usually, in this type of decision, there is more than one decision-maker involved, who can have different viewpoints. Therefore, this paper presents a model to support group decision-making, based on a multi-criteria method, in order to support the decision making procedure in the NS problem. As result, the model is able to find a solution that shows the best compromise regarding the benefits, costs, and the decision makers' preferences.

https://doi.org/10.1590/0103-6513.208316 1233 descargas

Decision model to control water losses in distribution networks
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Fontana, Marcele Elisa

; Morais, Danielle Costa

Production

Métricas del periódico
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Dic 2016, Volumen 26 Nº 4 Paginas 688 - 697

Resumen: En | Texto: En | PDF: En

Abstract The losses in the urban water supply networks have become a growing concern. There are several alternatives for the quantification, detection and monitoring of water losses. However, in general, water companies have budgetary and other constraints that hinder implementation. Therefore, this paper presents a model to aid the selection of a subset of preventive maintenance actions to control water losses while accounting for the water companies’ restrictions. The model combines an additive multi-attribute value analysis by applying the SMARTER method to evaluate alternatives with Integer Linear Programming (ILP). The model shows to be efficient in order to achieve a portfolio of preventive maintenance actions, particularly when the decision maker considers that, there is a compensation for attribute evaluations.

https://doi.org/10.1590/0103-6513.201815 3729 descargas

Modelo para setorizar redes de distribuição de água baseado nas características das unidades consumidoras
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Fontana, Marcele Elisa

; Morais, Danielle Costa

Production

Métricas del periódico
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Mar 2015, Volumen 25 Nº 1 Paginas 143 - 156

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Além dos custos diretos, a ocorrência de rupturas na rede de distribuição de água tem sempre consequências sociais associadas, principalmente pela interrupção do abastecimento de água durante a reparação da infraestrutura. Nesses casos, a setorização da rede torna mais fácil qualquer atividade de manutenção. Porém, além do elevado custo da alocação de válvulas de fechamento, as normas brasileiras sobre setorização das redes dizem respeito apenas a questões técnicas que devem ser obedecidas. Portanto, propõe-se uma setorização que também incorpore a intensidade do impacto gerado pela falta de água em cada trecho da tubulação. Para medir esse impacto é proposto um índice de priorização que agrega as características das unidades consumidoras por meio do método multicritério SMARTER. Assim, desenvolve-se um modelo de setorização para manobra que leva em consideração esse índice, buscando a maximização dos benefícios gerados e a minimização do número de válvulas de fechamento.

In addition to incurring direct costs, the occurrence of breaks in a water distribution network always has associated social consequences, mainly related to the interruption of water supply during infrastructure repair. In these cases, network segmentation facilitates maintenance activities. However, the Brazilian norms, about network segmentation, relate only the technical guidelines that must be followed. We therefore propose network segmentation based on the impact intensity caused by a lack of water in each pipe segment. To measure this impact, we propose a priority index that aggregates the characteristics of consumer units by the SMARTER multicriteria method. Taking this index into account, we propose a segmentation model for water distribution networks that seeks to maximize the benefits generated and to minimize the number of isolation valves.

https://doi.org/10.1590/S0103-65132013005000071 3062 descargas

10.

Agregação de pontos de vista de stakeholders utilizando o Value-Focused Thinking associado à mapeamento cognitivo
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Almeida, Simone de

; Morais, Danielle Costa

; Almeida, Adiel Teixeira de

Production

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Mar 2014, Volumen 24 Nº 1 Paginas 144 - 159

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Este artigo propõe uma nova abordagem para agregação das opiniões de diferentes stakeholders baseado na utilização do Value-Focused Thinking associada ao mapeamento cognitivo. Esta abordagem proposta foi aplicada para a determinação do preço de venda, concentrando-se no caso particular de uma farmácia de manipulação da região Sul do Brasil, o que propiciou um melhor entendimento do problema pelos envolvidos. Este artigo também identifica as implicações de se trabalhar com um grupo de stakeholders isoladamente, gerando diferentes modelos e agregando os pontos de vista a fim de gerar um único resultado no processo de precificação dos insumos.

This study proposes a new approach for aggregating the opinions of different stakeholders based on value-focused thinking combined with cognitive mapping. This approach was applied to determine selling prices, focusing on the particular case of a compounding pharmacy in southern Brazil. This method provides a better understanding of the problem with respect to the members involved. This paper also identifies the implications of working with individual stakeholders, generating different models and combining the viewpoints to obtain a unique result in the process of product pricing.

2650 descargas

11.

A bilateral and multi-issue negotiation framework to support a supply chain of construction industry
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Schramm, Fernando

; Morais, Danielle Costa

Pesquisa Operacional

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Dic 2013, Volumen 33 Nº 3 Paginas 491 - 512

Resumen: En | Texto: En | PDF: En

Any interaction involving individuals, whose objectives are conflicting with each other, may establish a negotiation process. In a negotiation, each party should develop his/her own strategy and, normally, a win-lose vision is frequently adopted. The main consequence of this behavior is a result, in which both parties lose, especially when the negotiation involves more than one aspect, such as negotiations resulting from purchases of material for construction industry, where aspects like price, quality and lead-time should be considered. Most of the negotiation involving construction industry adopts a win-lose vision; and, commonly, only the issue price is considered. The goal of this paper is to propose a framework to support negotiations between two parties (buyer and seller) in the supply chain of construction industry. The combination of a win-win strategy with a multicriteria analysis produces a best compromise solution for both parties. A simulation of negotiation using realistic data is presented.

5312 descargas

12.

Decision support model for selecting and evaluating suppliers in the construction industry
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Schramm, Fernando

; Morais, Danielle Costa

Pesquisa Operacional

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Dic 2012, Volumen 32 Nº 3 Paginas 643 - 662

Resumen: En | Texto: En | PDF: En

A structured evaluation of the construction industry's suppliers, considering aspects which make their quality and credibility evident, can be a strategic tool to manage this specific supply chain. This study proposes a multi-criteria decision model for suppliers' selection from the construction industry, as well as an efficient evaluation procedure for the selected suppliers. The model is based on SMARTER (Simple Multi-Attribute Rating Technique Exploiting Ranking) method and its main contribution is a new approach to structure the process of suppliers' selection, establishing explicit strategic policies on which the company management system relied to make the suppliers selection. This model was applied to a Civil Construction Company in Brazil and the main results demonstrate the efficiency of the proposed model. This study allowed the development of an approach to Construction Industry which was able to provide a better relationship among its managers, suppliers and partners.

12033 descargas Citado 5 veces en SciELO

13.

Using ELECTRE TRI to support maintenance of water distribution networks
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Trojan, Flavio

; Morais, Danielle Costa

Pesquisa Operacional

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Ago 2012, Volumen 32 Nº 2 Paginas 423 - 442

Resumen: En | Texto: En | PDF: En

Problems encountered in the context of the maintenance management of water supply are evidenced by the lack of decision support models which gives a manager overview of the system. This paper, therefore, develops a model that uses, in its framework, the multicriteria outranking method ELECTRE TRI. The objective is to sort the areas of water flow measurement of a water distribution network, by priority of maintenance, with data collected from an automated system of abnormalities detection. This sorting is designed to support maintenance decisions in terms of the measure more appropriate to be applied per region. To illustrate the proposed model, an application was performed in a city with 100 thousand water connections. With this model it becomes possible to improve the allocation of maintenance measures for regions and mainly to improve the operation of the distribution network.

3788 descargas Citado 5 veces en SciELO

14.

Prioritising alternatives for maintenance of water distribution networks: a group decision approach
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Trojan, Flavio

; Morais, Danielle Costa

Water SA

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Ene 2012, Volumen 38 Nº 4 Paginas 555 - 564

Resumen: En | Texto: En | PDF: En

Difficulties related to the group decision-making process in the water supply sector, such as physical and economic losses, irrational use of water and maintenance costs, highlight the need to develop procedures to support decisions, reducing unnecessary water use and wastage. This study focused on the rational use of water resources and reduction of water losses, based on the assumption that it is far more economical to develop and improve existing systems rather than build new systems in parallel to the existing one. This study aimed to support a group decision-making process in the maintenance section of a water supply company. A model is proposed consisting of 2 phases, which aggregates individual preferences to achieve a group decision. The first phase is based on the ELECTRE II method, analysing individual preferences, while the second is based on the COPELAND method to aggregate individual preferences. From this model, we developed a software program to prioritise alternatives, simultaneously taking into account subjective and objective criteria, and thereby giving decision makers a clear and comprehensive overview of alternatives, indicating the most suitable alternative based on the preferences of group members from different areas.

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A multicriteria group decision model aggregating the preferences of decision-makers based on electre methods
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Alencar, Luciana Hazin

; Almeida, Adiel Teixeira de

; Morais, Danielle Costa

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Dic 2010, Volumen 30 Nº 3 Paginas 687 - 702

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Grande parte das decisões tomadas em uma organização envolve um grupo de pessoas. Nesse sentido é necessária a existência de metodologias adequadas que dêem suporte à tomada de decisão em grupo, tratando de forma coerente as avaliações e preferências de todos os decisores envolvidos nesse processo. Há duas abordagens utilizadas para decisão em grupo: a agregação dos julgamentos individuais e a agregação das prioridades individuais. Este trabalho foca na segunda abordagem propondo um modelo para decisão em grupo nas situações em que não se tem informação a respeito da importância dos decisores. Nesse modelo o método ELECTRE II é utilizado no primeiro momento e o método ELECTRE IV é utilizado no segundo momento, quando se faz a avaliação coletiva dos decisores. Uma aplicação numérica é apresentada para ilustrar o modelo.

Often decisions taken in organizations are made by a group of people, and in order to build a collective decision, the preferences of individuals must be considered. The two most useful approaches to aggregating individual preferences are the aggregation of individual judgments and the aggregation of individual priorities. This paper focuses on the latter approach and proposes a multicriteria group decision model in situations where there is no information with regard to the relative importance of the decision-makers. This model includes three stages. In the first, the ELECTRE II method is applied so as to obtain the individual rankings. In the second stage, a global matrix of alternatives versus decision-makers is built up using the results from the previous stage. Finally, the third stage aggregates the individual preferences by applying the ELECTRE IV method and the final collective evaluation is undertaken. A numerical application is presented to illustrate the model.

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