Thalles Garcez

Thalles Garcez
Federal University of Pernambuco | UFPE · Núcleo de Tecnologia / Engenharia de Produção

DSc

About

44
Publications
1,906
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283
Citations
Introduction
Thalles Garcez currently works at the Núcleo de Tecnologia / Engenharia de Produção da Universidade Federal de Pernambuco. Thalles does research in Risk, Reliability and Maintenance Engineering, Industrial Engineering and Operational Research.
Additional affiliations
October 2013 - present
Federal University of Pernambuco
Position
  • Professor (Assistant)
Education
March 2010 - May 2013
Federal University of Pernambuco
Field of study
  • Production Engineering

Publications

Publications (44)
Article
Full-text available
This assessment aims at measuring the impact of different location mobility on the COVID-19 pandemic. Data over time and over the 27 Brazilian federations in 5 regions provided by Google's COVID-19 community mobility reports and classified by place categories (retail and recreation, grocery and pharmacy, parks, transit stations, workplaces, and res...
Article
This paper proposes a multidimensional and multi-period analysis of safety on roads. It aggregates different road safety performance indicators observed over different periods for which multicriteria and multi-period approaches are used. The criticality of a road depends on the interaction of various factors, such as human factors, causes of accide...
Article
Full-text available
This paper puts forward a new hybrid Grey Additive-Veto Model (GAVM) for selecting suppliers, which optimizes the choice by the decision-maker’s (DM) preference. This study uses a Multi-Criteria Decision Making (MCDM) approach. The model proposed incorporates the uncertainty of real-world decision problems, through the Grey Numbers. Given the DM’s...
Article
Full-text available
O trabalho apresenta a concepção, modelagem e disponibilidade de um Sistema Unificado de Consulta e Análise da Acidentalidade em Rodovias Federias de Pernambuco, SUCAARF-PE, aplicado à avaliação e tomada de decisão multicritério para priorização trechos rodovias federais de Pernambuco em hierarquia de criticidade da acidentalidade de trânsito, atra...
Article
Full-text available
Three of the most important objectives of the Federal Road Police (Patrol) when managing the traffic on federal roads in Brazil are to ensure that there is an efficient movement of traffic under stable conditions and minimal traffic congestion problems that the federal highways are safe and that accidents do not occur. Therefore, multiple matters a...
Article
Full-text available
Goal: This study developed a structured decision model capable of solving the storage location assignment problem (SLAP) in a picker-to-parts system, using multiples key performance indicators (KPIs). Design / Methodology / Approach: A hybrid approach was developed. For that, a Multi-Objective Genetic Algorithm (MOGA) was used considering three fi...
Conference Paper
Full-text available
The risk management process has become an increasingly relevant issue for decision-making in organizations. Add to this, in some situations, the increased complexity of industrial systems and activities. In parallel, tools and methodologies must be applied that support activities associated with risk management. One of the methodologies applied in...
Article
Multiple criteria decision making (MCDM/A) methods have been applied in many risk management contexts. This article aims to diagnose the state of the art and identify research directions of multicriteria models applied in risk management. A systematic literature review is structured in order to answer seven main research questions. The steps of the...
Book
Multiobjective and Multicriteria Problems and Decision Models.- Multiobjective and Multicriteria Decision Processes and Methods.- Basic Concepts on Risk Analysis, Reliability and Maintenance.- Multidimensional Risk Analysis.- Preventive Maintenance Decisions.- Decision Making in Condition-Based Maintenance.- Decision on Maintenance Outsourcing.- Sp...
Chapter
In this chapter, specific problems in risk, reliability and maintenance context are described, such as location of backup units, sequencing of maintenance activities, natural disasters, operation planning of a power system network, integrated production and maintenance scheduling, maintenance team sizing and reliability acceptance tests. This chapt...
Chapter
Technological advances in equipment and the increase in process automation has led to the maintenance function having a role in business competitiveness. The contribution of preventive maintenance is discussed, as an important part of this function, with some emphasis on methods for planning replacement, in the sense of time interval of preventive...
Chapter
The decision-making process for any organization may be a key factor for its success. Many decision problems have more than one objective that need to be dealt with simultaneously. This chapter introduces decision problems with multiple objectives, with a description of the basic elements needed to build decision models and focuses on multicriteria...
Chapter
Man’s level of dependence on equipment is increasing. This degree of dependence requires high levels of availability, which has been changing the impact that disruption of these systems causes. For many systems, an interruption has consequences that go beyond the dimension of financial loss, thus justifying a multidimensional consequence approach b...
Chapter
Redundancy allocation is a decision that involves assessing and choosing where to locate additional components or subassemblies, above the minimum required for an existing system to operate, in order to promote the system’s reliability. Specifically, the field of multi-objective redundancy allocation has received several contributions since the 197...
Chapter
The design selection problem in the RRM context considers long-term performance, and represents higher additional costs if unforeseen features that should have been included during the project design phase had to be implemented afterwards. Design decision involves multiple aspects and may be more critical depending on the kind of item, such as cons...
Chapter
An important issue related to maintenance management is the problem of sizing the amount of spare parts. An excess number of spare parts results in financial losses. However, a lack of spare parts is also negative, because this may result in a loss of production due to the increased downtime of equipment. Therefore, spare parts should be available...
Chapter
An appropriate decision-making process is relevant for the strategic success of any organization. Most of the decision problems in these organizations have multiple objectives that have to be dealt with simultaneously. This chapter gives a brief description of a few multicriteria (MCDM; MCDA; MCDM/A) methods, including deterministic additive method...
Chapter
Accidents involve critical consequences that require an appropriate and efficient form of risk management. A multidimensional risk analysis allows a broader view. MCDM/A approaches enable more consistent decision-making, taking into account the DM’s rationality (compensatory or non-compensatory), DM’s behavior regarding risk (prone, neutral or aver...
Chapter
This chapter presents key aspects of multicriteria (MCDM/A) approaches for decisions on maintenance outsourcing regarding maintenance contract, which includes contract selection (e.g. repair contract) and supplier selection. Contract design is a multi-objective task that leads the maintenance manager (or decision maker - DM) to decide amongst a com...
Chapter
This chapter presents multicriteria (MCDM/A) models to classify and assign maintenance priorities in order to allow maintenance planning to be more effective. From traditional maintenance planning techniques such as RCM (Reliability Centered Maintenance), TPM (Total Productive Maintenance) and others, a common aspect of these techniques is the defi...
Chapter
Predictive maintenance modeling is a tool that can provide many benefits to the maintenance management area. This chapter suggests a multicriteria approach for modeling condition based maintenance decisions. Whereas the Predictive maintenance uses condition information of assets, the preventive maintenance is time-based only. This chapter discusses...
Article
Even though an underground electricity distribution system is safer than an overhead system, several accidents have occurred in them. Assessing the risk of hundreds or even thousands of underground vaults is a hard task. Furthermore, given the large variability in external and internal environments and, hence, there being a wide range of possible c...
Article
This paper explores a risk measure of underground vaults that considers the consequences of arc faults. The increasing use of underground systems, together with the aging of networks, the lack of maintenance and interference from other (third party) underground systems nearby have caused many accidents in urban areas, thus endangering human life. T...
Article
Full-text available
In the paper we consider an electricity provider company that makes decision on allocating resources on electric network maintenance. The investments decrease malfunction rate of network nodes. An accidental event (explosion, fire, etc.) or a malfunctioning on underground system can have various consequences and in different perspectives, such as d...
Conference Paper
The use of decision support systems (DSS) has been spread along organizations as a manner to support unstructured decision problems and help managers to face strategic problems. This work presents the use of a DSS along a risk analysis process for natural gas pipelines, in order to establish a priority classification to allow decision making over t...
Conference Paper
Currently, pipelines are considered the most practical and safest means for the transport and distribution of natural gas. However, despite this, accidents occur which are often of catastrophic dimensions. Therefore, it has become increasingly necessary for risk analysis to be further elaborated so as to provide efficient results for the management...
Conference Paper
Usually risk is measured using approaches that measure only one dimension, which consider several accidental scenarios and their consequences in the dimension considered, for example a human dimension that can be measured by a Fatal Accidental Rate (FAR) or fN curves. This article presents an application of risk analysis using multi criteria decis...

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