Produção Nacional
Revisado por pares
Raquel Rolnik, Alvaro Luís dos Santos Pereira, Fernanda Accioly Moreira, Luciana de Oliveira Royer, Rodrigo Faria Gonçalves Iacovini, Vítor Coelho Nisida,
Lançado em 2009, o Programa Minha Casa Minha Vida (PMCMV), atual política habitacional do Governo Federal, vem desencadeando impactos territoriais significativos nas cidades brasileiras. Embora o programa tenha alçado o tema da habitação a uma posição de destaque na agenda do Governo Federal, incluindo grandes subsídios, o padrão de inserção urbana de seus empreendimentos reafirma a predominância de um modelo de urbanização excludente e precário na maior parte das cidades do país, especialmente nas ...
Tópico(s): Urban and Rural Development Challenges
2015 - Editora da Pontifícia Universidade Católica de São Paulo | Cadernos Metrópole
Produção Nacional
Revisado por pares
Igor Machado Coelho, Vitor N. Coelho, Rodolfo Pereira Araújo, Wang Yong Qiang, Brett D. Rhodes,
Consensus mechanisms are a core feature for handling negotiation and agreements. Blockchain technology has seen the introduction of different sorts of consensus mechanism, ranging from tasks of heavy computation to the subtle mathematical proofs of Byzantine agreements. This paper presents the pioneer Delegated Byzantine Fault Tolerance (dBFT) protocol of Neo Blockchain, which was inspired by the Practical Byzantine Fault Tolerance (PBFT). Besides introducing its history, this study describes proofs ...
Tópico(s): Optimization and Search Problems
2020 - Multidisciplinary Digital Publishing Institute | Future Internet
Produção Nacional
Revisado por pares
Thays A. Oliveira, Yuri B. Gabrich, Helena Ramalhinho, Miquel Oliver, Miri Weiss Cohen, Luiz Satoru Ochi, Serigne Guèye, Fábio Protti, Alysson A. Pinto, Diógenes Viegas Mendes Ferreira, Igor Machado Coelho, Vitor N. Coelho,
Cities are constantly transforming and, consequently, attracting efforts from researchers and opportunities to the industry. New transportation systems are being built in order to meet sustainability and efficiency criteria, as well as being adapted to the current possibilities. Moreover, citizens are becoming aware about the power and possibilities provided by the current generation of autonomous devices. In this sense, this paper presents and discusses state-of-the-art transportation technologies ...
Tópico(s): Smart Parking Systems Research
2020 - Multidisciplinary Digital Publishing Institute | Future Internet
Produção Nacional
Revisado por pares
Bruno N. Coelho, Vitor N. Coelho, Igor Machado Coelho, Luiz Satoru Ochi, R. K., Demetrius Zuidema, Milton Sérgio Fernandes de Lima, Adilson Rodrigues da Costa,
This paper introduces an Unmanned Aerial Vehicle (UAV) heterogeneous fleet routing problem, dealing with vehicles limited autonomy by considering multiple charging stations and respecting operational requirements. A green routing problem is designed for overcoming difficulties that exist as a result of limited vehicle driving range. Due to the large amount of drones emerging in the society, UAVs use and efficiency should be optimized. In particular, these kinds of vehicles have been recently used ...
Tópico(s): UAV Applications and Optimization
2017 - Elsevier BV | Computers & Operations Research
Produção Nacional
Revisado por pares
Igor Machado Coelho, Vitor N. Coelho, Eduardo Luz, Luiz Satoru Ochi, Frederico Gadelha Guimarães, Eyder Rios,
As the new generation of smart sensors is evolving towards high sampling acquisitions systems, the amount of information to be handled by learning algorithms has been increasing. The Graphics Processing Unit (GPU) architecture provides a greener alternative with low energy consumption for mining big data, bringing the power of thousands of processing cores into a single chip, thus opening a wide range of possible applications. In this paper (a substantial extension of the short version presented at ...
Tópico(s): Traffic Prediction and Management Techniques
2017 - Elsevier BV | Applied Energy
Produção Nacional
André Braz Golgher, Ernesto F. L. Amaral, Alan Vítor Coelho Neves,
Este trabalho faz uma análise do desempenho acadêmico de estudantes da Universidade Federal de Minas Gerais (UFMG) com o objetivo principal de verificar se há diferenças significativas entre estudantes que receberam e não receberam o bônus sociorracial no vestibular da instituição. Os resultados sugerem que o desempenho escolar entre bonistas e não bonistas é similar na grande maioria das comparações. Ou seja, a política de bônus sociorracial, implementada durante alguns anos na UFMG, não promoveu ...
Tópico(s): Evasion and Academic Success Factors
2015 - | Ciências sociais em perspectiva
Produção Nacional
Raphael Carlos Cruz, Thaisla Cristiane Borella da Silva, Marcone Jamilson Freitas Souza, Vitor N. Coelho, Marcio Tadayuki Mine, Alexandre Xavier Martins,
This work addresses the Vehicle Routing Problem with Simultaneous Pickup and Delivery (VRPSPD). Due to its complexity, we propose a heuristic algorithm for solving it, so-called GENVNS-TS-CL-PR. This algorithm combines the heuristic procedures Cheapest Insertion, Cheapest Insertion with multiple routes, GENIUS, Variable Neighborhood Search (VNS), Variable Neighborhood Descent (VND), Tabu Search (TS) and Path Relinking (PR). The first three procedures aim to obtain an good initial solution, and the VND ...
Tópico(s): Transportation and Mobility Innovations
2012 - Elsevier BV | Electronic Notes in Discrete Mathematics
Produção Nacional
Revisado por pares
Vítor Nagai Yamaki, Thiago Barbosa Gonçalves, João Vitor Baia Coelho, Ruy Victor Simões Pontes, Felipe Lobato da Silva Costa, Marcus Vinícius Henriques Brito,
To evaluate the protective effect of remote ischemic per-conditioning in ischemia and reperfusion-induced renal injury.Fifteen rats (Rattus norvegicus) were randomized into three groups (n = 5): Group Normality (GN), Control Ischemia and Reperfusion (GIR) and Group remote ischemic per-conditioning (GPER). With the exception of the GN group, all others underwent renal ischemia for 30 minutes. In group GPER we performed the ischemic remote per-conditioning, consisting of three cycles of ischemia and reperfusion ...
Tópico(s): Cardiac Arrest and Resuscitation
2012 - Brazilian College of Surgeons | Revista do Colégio Brasileiro de Cirurgiões
Produção Nacional
Vitor N. Coelho, Marcone Jamilson Freitas Souza, Igor Machado Coelho, Frederico Gadelha Guimarães, Thibaut Lust, Ritiel Corrêa da Cruz,
This work presents three multi-objective heuristic algorithms based on Two-phase Pareto Local Search with VNS (2PPLS-VNS), Multi-objective Variable Neighborhood Search (MOVNS) and Non-dominated Sorting Genetic Algorithm II (NSGA-II). The algorithms were applied to the open-pit-mining operational planning problem with dynamic truck allocation (OPMOP). Approximations to Pareto sets generated by the developed algorithms were compared considering the hypervolume and spacing metrics. Computational experiments ...
Tópico(s): Metaheuristic Optimization Algorithms Research
2012 - Elsevier BV | Electronic Notes in Discrete Mathematics
Vítor Alexandre Coelho, Ana Paula Couceiro Figueira,
This article aims to analyze and explore the development of the Project “Positive Attitude” during the first three years of functioning. This project’s main objective is the promotion of social skills, self-esteem and the social and emotional self-concept of elementary and middle school students. For doing so, the project involves all the school community.
Tópico(s): Child and Adolescent Psychosocial and Emotional Development
2011 - University of Florida | Revista Interamericana de Psicología/Interamerican Journal of Psychology
Vítor Alexandre Coelho, Marta Marchante, Ana Maria Romão,
This study analyzed if adolescents' social anxiety and social withdrawal trajectories during one year in middle school were associated with their involvement in traditional bullying or cyberbullying roles. Social anxiety and social withdrawal were assessed three times during one year, through self-reports and teacher reports. The sample was composed by 511 middle school students (Mage = 12.70; SD = 1.04; 50.7% boys). Results from the self-reports showed that victims and bully–victims did not display ...
Tópico(s): Child Development and Digital Technology
2022 - Elsevier BV | Contemporary Educational Psychology
Marta Marchante, Vítor Alexandre Coelho, Ana Maria Romão,
• A more positive trajectory in school climate was associated with less victimization. • Higher levels of fairness of rules were associated with less bullying behaviors. • Boys showed a larger increase in victimization during middle school transition. This study analyses how perceived school climate variables (teacher–student relationships, student–student relationships, fairness of rules, school safety, and liking of school) influenced bullying and victimization behaviors during middle school transition ...
Tópico(s): Youth Development and Social Support
2022 - Elsevier BV | Contemporary Educational Psychology
Produção Nacional
Revisado por pares
Vitor Lima Coelho, Tarcísio Fontenele de Brito, Ingrid Alexandre de Abreu Brito, Maira Arruda Cardoso, Mateus Berni, Helena Araujo, Michael Sammeth, Attilio Pane,
Abstract Rhodnius prolixus is a Triatominae insect species and a primary vector of Chagas disease. The genome of R. prolixus has been recently sequenced and partially assembled, but few transcriptome analyses have been performed to date. In this study, we describe the stage-specific transcriptomes obtained from previtellogenic stages of oogenesis and from mature eggs. By analyzing ~ 228 million paired-end RNA-Seq reads, we significantly improved the current genome annotations for 9206 genes. We provide ...
Tópico(s): Insect symbiosis and bacterial influences
2021 - Nature Portfolio | Scientific Reports
Vítor Alexandre Coelho, George G. Bear, Patrícia Brás,
Tópico(s): Youth Development and Social Support
2020 - Springer Science+Business Media | Journal of Youth and Adolescence
Vítor Alexandre Coelho, Ana Maria Romão, Patrícia Brás, George G. Bear, Ana Prioste,
Tópico(s): Child and Adolescent Psychosocial and Emotional Development
2019 - Springer Science+Business Media | Child Indicators Research
Vítor Alexandre Coelho, Vanda Sousa,
Tópico(s): Bullying, Victimization, and Aggression
2018 - Springer Science+Business Media | Journal of Youth and Adolescence
Produção Nacional
Revisado por pares
Hossein Nematzadeh, Rasul Enayatifar, Homayun Motameni, Frederico Gadelha Guimarães, Vitor N. Coelho,
Image data are considered as significant data in medical systems. The amount of medical image data available for analysis keeps increasing with the modernization of image devices and biomedical image processing techniques. To prevent from being hacked over an insecure network, medical images should be encrypted safely. This study aims at proposing a medical image encryption method based on a hybrid model of the modified genetic algorithm (MGA) and coupled map lattices. First, the proposed method ...
Tópico(s): Wireless Communication Security Techniques
2018 - Elsevier BV | Optics and Lasers in Engineering
Produção Nacional
Revisado por pares
Luciano Perdig�ão Cota, Vitor N. Coelho, Frederico Gadelha Guimarães, Marcone Jamilson Freitas Souza,
Abstract Given the important role of machine scheduling in manufacturing industry, we discuss power consumption in sequencing jobs in a scheduling problem, assuming variable speed operation in machines. The problem involves defining the allocation of jobs to machines, the order of processing jobs and the speed of processing each job in each machine. This problem can be viewed as a type of green scheduling problem, dealing with sustainable use of energy consumption and environmental effects. We propose ...
Tópico(s): Advanced Multi-Objective Optimization Algorithms
2018 - Wiley | International Transactions in Operational Research
Vítor Alexandre Coelho, Ana Maria Romão,
This study investigated how social anxiety and social withdrawal are related to middle school students’ involvement in bullying, and whether class-levels variables influence this association. There were 668 participants (Mage = 12.73, SD = 1.08), who were part of a screening for inclusion in a social and emotional learning program. Results showed there was overlap between traditional bullying and cyberbullying in bullies (52.4%), but not victims (32.7%). Girls reported significantly more social anxiety ...
Tópico(s): Child Development and Digital Technology
2018 - Elsevier BV | Computers in Human Behavior
Produção Nacional
Revisado por pares
Thiago Schons, Gladston Moreira, Pedro Silva, Vitor N. Coelho, Eduardo Luz,
The global expansion of biometric systems promotes the emergence of new and more robust biometric modalities. In that context, electroencephalogram (EEG) based biometric interest has been growing in recent years. In this study, a novel approach for EEG representation, based on deep learning, is proposed. The method was evaluated on a database containing 109 subjects, and all 64 EEG channels were used as input to a Deep Convolution Neural Network. Data augmentation techniques are explored to train ...
Tópico(s): Functional Brain Connectivity Studies
2018 - Springer Science+Business Media | Lecture notes in computer science
Vítor Alexandre Coelho, Marta Marchante,
Tópico(s): Child Development and Digital Technology
2018 - Springer Science+Business Media | Journal of Youth and Adolescence
Vítor Alexandre Coelho, Vanda Sousa,
The aim of the present study was to examine whether class-level characteristics, such as class size and gender ratio, could contribute to explaining different levels of bullying, victimization, and perception of defending between classes. Seven-hundred-and-sixty-three students ( M age = 12.96, SD = 1.22; 54.4% boys) from 42 Portuguese middle school classes participated in the current study. Bullying, victimization, and perception of defending were assessed through a self-report questionnaire. In order ...
Tópico(s): Plant Virus Research Studies
2017 - SAGE Publishing | School Psychology International
Produção Nacional
Revisado por pares
Roozbeh Haghnazar Koochaksaraei, Ivan Reinaldo Meneghini, Vitor N. Coelho, Frederico Gadelha Guimarães,
Many-objective Optimization Problems (MaOPs) present various challenges to the current optimization methods. Among these, the visualization gap is an important obstacle to the interpretation of results. Having the ability of visualizing partial or final results of a high-dimensional multi-objective problem provides key advantages to the optimizer and also to the decision-maker in terms of understanding the problem and interpreting results. In this article, a multi-purposed visualization tool is proposed ...
Tópico(s): Topology Optimization in Engineering
2017 - Elsevier BV | Knowledge-Based Systems
Terry Bowles, Shane R. Jimerson, Aaron Haddock, Julene Nolan, S. Jabłoński, Magdalena Czub, Vítor Alexandre Coelho,
The aim of this research is to gather preliminary information from a range of countries to develop an international perspective on Social and Emotional Learning (SEL). Currently, there is no cohesive international statement on the minimum requirements to provide SEL in schools. By bringing together a range of international perspectives it is intended that clarity will be provided from which new approaches and initiatives can be developed and researched. International researchers familiar with SEL ...
Tópico(s): Child and Adolescent Psychosocial and Emotional Development
2017 - Cambridge University Press | Journal of Relationships Research
Vítor Alexandre Coelho, Ana Maria Romão,
Secondary school transition takes place earlier in Portugal than in most Western countries. This study aims to analyze the impact of this transition on the self-concept and self-esteem of Portuguese students, and to identify potential differential gender impacts. The sample included 377 students (Mage = 9.46; SD = .93; 52.8% boys). Self-report questionnaires were administered in 4th grade (middle and end) and 5th grade (beginning and end). Multilevel linear modeling with a repeated measures design was used ...
Tópico(s): Cognitive Abilities and Testing
2017 - Elsevier BV | Revista de Psicodidáctica (English ed )
Produção Nacional
Revisado por pares
Eyder Rios, Luiz Satoru Ochi, Cristina Boeres, Vitor N. Coelho, Igor Machado Coelho, Ricardo Farias,
Optimization tasks are often complex, CPU-time consuming and usually deal with finding the best (or good enough) solution among alternatives for a given problem. Parallel metaheuristics have been used in many real-world and scientific applications to efficiently solve these kind of problems. Local Search (LS) is an essential component for some metaheuristics and, very often, represents the dominant computational effort accomplished by an algorithm. Several metaheuristic approaches try to adapt traditional ...
Tópico(s): Optimization and Search Problems
2017 - Elsevier BV | Journal of Parallel and Distributed Computing
Produção Nacional
Revisado por pares
Vitor N. Coelho, Igor Machado Coelho, Bruno N. Coelho, Glauber Cardoso de Oliveira, Alexandre Carvalho Barbosa, Leo Pereira, Alan de Freitas, Haroldo Gambini Santos, Luis S. Ochi, Frederico Gadelha Guimarães,
In this paper (a substantial extension of the short version presented at REM2016 on April 19–21, Maldives [1]), multi-objective power dispatching is discussed in the scope of microgrids located in smart cities. The proposed system considers the use of Plug-in Electric Vehicle (PEV) and Unmanned Aerial Vehicle (UAV) as storage units. The problem involves distinct types of vehicles and a community, composed of small houses, residential areas and different Renewable Energy Resources. In order to highlight ...
Tópico(s): Smart Grid Energy Management
2016 - Elsevier BV | Applied Energy
Vítor Alexandre Coelho, Vanda Sousa, Marta Marchante,
The Social and Emotional Competencies Evaluation Questionnaire—Teacher’s version, Short Form (QACSE-P-SF) allows teachers to assess their students’ social and emotional competencies, having been designed for program evaluation. Thirty-nine teachers completed the QACSE-P-SF, regarding 657 students (fourth to ninth grades). Factor analyses supported a six-factor structure with acceptable internal consistency. Sex differences were found with teachers reporting girls as having higher scores on Self-Control, ...
Tópico(s): Child and Adolescent Psychosocial and Emotional Development
2016 - SAGE Publishing | Psychological Reports
Vítor Alexandre Coelho, Ana Maria Romão,
Transition from elementary to middle school is commonly seen as a period of stress, impacting students' school adjustment. The present longitudinal study aimed to analyze the difference in stress levels between the end of 4th grade and 5th grade, while also analyzing gender differences and 5th grade retention. Two hundred fifty-eight 4th grade students (M age = 9.55; SD = 0.77) from six Portuguese public schools, from the municipality of Torres Vedras, participated in this study. Self-report questionnaires ...
Tópico(s): Employment and Welfare Studies
2016 - Cambridge University Press | The Spanish Journal of Psychology
Vítor Alexandre Coelho, Vanda Sousa,
Tópico(s): Bullying, Victimization, and Aggression
2016 - Springer Science+Business Media | Journal of Youth and Adolescence