Verified email at id.uff.br
Escola de Engenharia - Laboratório de Tecnologia e Gestão de Negócios (LATEC)
Universidade Federal Fluminense
BSc., MSc., MBA, Ph.D., Full Professor in Earth Sciences at Universidade Federal Fluminense - UFF (Ret) and Member of the Brazilian Academy of Education. Former Rector of the Universidade Federal Fluminense, Brazil. Senior professional with 30 years of experience, with a career in strategic positions, focusing on pursuing financial resources, advances in research and education, and internationalization, innovation, science, and technology projects. Responsible for representing Brazil in international commissions in the areas of Geology and Marine Geophysics and member of the Executive Committee of the Coordination of Higher Education Personnel Improvement - CAPES / Ministry of Education in the International Ocean Drilling Program (IODP). Regional secretary of the Inter-American University Organization (IOHE) in Brazil and President of the Tordesillas University Group, and permanent member of the Brazilian Academy of Education.
Business School - Fundação Instituto de Administração: Sao Paulo, SP, Brazil
2018-08-01 to 2019-12-31 | MBA Executivo Internacional
University of Leeds: Leeds, West Yorkshire, UK
1995-09-01 to 1999-09-01 | Ph.D. Earth Sciences
Universidade Federal do Rio de Janeiro: Rio de Janeiro, RJ, Brazil
1991-03-01 to 1993-12-01 | MSc Geology
Columbia University: New York, New York, USA
1984-12-31 to 1985-10-30 | Visiting Scholar Geophysics - Lamont-Doherty Earth Observatory
Universidade Federal do Rio de Janeiro: Rio de Janeiro, RJ, Brazil
1976-03-01 to 1981-06-01 | BSc Geology
Higher Education, Public Policies, Management, Marine Sciences, Environmental Studies
Izabela Simon Rampasso, Sidney L.M. Mello, Rubens Walker, Victor G. Simão, Robson Araújo, Juliana Chagas, Osvaldo Luiz Gonçalves Quelhas, and Rosley Anholon
Higher Education, Skills and Work-based Learning, ISSN: 20423896, eISSN: 2042390X, Pages: 34-47, Published: 2 Feb 2021 Emerald
PurposeThe objective of this study is to identify research gaps related to skills required for Industry 4.0, considering research in the context of Brazilian undergraduate courses. In this sense, the question of this study was established: What are the educational gaps related to skills required in Industry 4.0 context, considering considering research in the previously mentioned?Design/methodology/approachTo answer this question, the ten top work-related skills required for professionals in Industry 4.0 published by the World Economic Forum were used to perform a systematic literature review. From this review, 100 articles were found in the searched databases. From them, 18 were within the research scope.FindingsThrough an analysis of their content, it was possible to verify that, from the 10 skills analyzed, only six were identified in the articles. That is, no research was found for: people management, service orientation, negotiation, and cognitive flexibility. Additionally, there are undergraduate courses that are not considered in current researches and should be analyzed.Originality/valueThe gaps pointed out in this study are relevant to guide future analyzes of the Brazilian educational model and may provide insights for research in other countries.
Sidney Luiz de Matos Mello, Nicholas Van Erven Ludolf, Osvaldo Luiz Gonçalves Quelhas, and Marcelo Jasmim Meiriño
Ensaio, ISSN: 01044036, eISSN: 18094465, Issue: 106, Pages: 66-87, Published: 1 January 2020 FapUNIFESP (SciELO)
Abstract The digital era highlights industrial advances, changes in the labor market, and in the educational system. This study investigates these factors through analytical indicators such as the workforce, education, and innovation in Brazil within a global context. It is a qualitative exploratory research that enables a reflection on the relations between the workforce and technological education for the skilled labor. The database used includes documentary data from the literature and data from census surveys in Brazil and abroad. Data indicate that Brazil is significantly delayed in the digital industry, human capital, and research – behind all the other BRICS countries (Russia, India, China and South Africa) in terms of innovation. About 11 million people aged 15–29 are not working and are not enrolled in high school, college, technical course, or vocational qualification. The number of students aged 15 to 19 years old attending technical courses is still around 9%. The network of national technical institutes is key for the rapid recomposition of the skilled labor with regard to industry. The Brazilian economy needs to grow to strengthen both the digital industry and research. Public policies need to heed the advice regarding the link between technical education and industry. This is equally important for the success of the Brazilian Agenda for Industry 4.0.
Fernando Rocha Carneiro, Arthur Ayres Neto, Rodrigo Menezes Raposo de Almeida, and Sidney de Matos Mello
Revista Brasileira de Geofisica, ISSN: 0102261X, eISSN: 18094511, Pages: 283-296, Published: 2018 Sociedade Brasileira de Geofisica
ABSTRACT. The geotechnical description of sandy sediments of the surf zone was done in two ways: directly, through standard geotechnical testing proposed by ASTM (American Society for Testing and Materials) and indirectly, through electrical resistivity measurements. The geotechnical property chosen for the description of the sediment was porosity, due to its influence in a wide range of soil properties. The indirect estimate of porosity through resistivity measurements was based on Archie’s equation. However, the difficulty in generalizing this equation is the empirical determination of the cementation exponent (m). For this reason, the values proposed by other authors were tested. A comparison of the porosity values obtained by the two methods (directly and indirectly using different values for cementation exponent) showed that it is not advisable to use cementation exponent (e) from other authors indiscriminately. Moreover, the application of the porosity values obtained by the ASTM tests allowed calculating a more suitable cementation exponent value for sandy sediments of the surf zone (between 1.48 and 1.79). Besides porosity, other geotechnical parameters, such as void ratio (e) and total density (rt ), were also differentiated by measuring the electrical resistivity of selected samples allowing to describe the geotechnical state of the sediment with higher confidence.Keywords: Electrical Resistivity; Coastal Engineering; Archie’s Equation; Porosity; Grain Size.RESUMO. A descrição geotécnica dos sedimentos arenosos da zona de arrebentação foi feita de duas maneiras: diretamente, através de ensaios geotécnicos padrão, propostos pela ASTM (Sociedade Americana de Testes e Materiais) e indiretamente, através de medidas de eletrorresistividade. A propriedade geotécnica escolhida para a descrição do sedimento foi a porosidade, por ser uma variável importante na caracterização das propriedades do solo. A estimativa indireta da porosidade através de medidas de resistividade foi baseada na equação de Archie. Entretanto, a principal dificuldade em generalizar esta equação é a determinação empírica do expoente de cimentação (m). Por esse motivo, os valores propostos por outros autores foram testados. Uma comparação dos valores de porosidade obtidos pelos dois métodos (direta e indiretamente, usando diferentes valores para o expoente de cimentação) mostrou que não é aconselhável usar expoente de cimentação (m) de outros autores indiscriminadamente. Além disso, a aplicação dos valores de porosidade obtidos pelos testes ASTM permitiu o cálculo de um valor para o expoente de cimentação mais adequado para sedimentos arenosos da zona de arrebentação (entre 1,48 e 1,79). Além da porosidade, outros parâmetros geotécnicos, como índice de vazios (e) e densidade total (rt ), também foram diferenciados pela medição da resistividade elétrica de amostras selecionadas, permitindo descrever o estado geotécnico do sedimento com maior confiança.Palavras-chave: Eletrorresistividade; Engenharia Costeira; Equação de Archie; Porosidade; Granulometria.
Geociencias, ISSN: 01019082, Pages: 291-310, Published: 2010
Geociencias, ISSN: 01019082, Pages: 21-32, Published: 2010
Susanna Eleonora Sichel, Sonia Esperança, Akihisa Motoki, Marcia Maia, Mary F. Horan, Peter Szatmari, Eliane da Costa Alves, and Sidney L.M. Mello
Revista Brasileira de Geofisica, ISSN: 0102261X, Pages: 69-86, Published: January/March 2008 FapUNIFESP (SciELO)
This paper presents geophysical and geochemical evidence for the possible existence of cold, subducted lithosphere beneath the Saint Paul Fracture Zone of the Equatorial Atlantic Ocean. The ocean floor along the fracture zone is characterized by a high percentage of abyssal peridotites. The abyssal peridotites were emplaced by tectonic uplift of the oceanic lithosphere. The top of the ridge is exposed at Saint Peter and Saint Paul islets. The Os isotopic composition of these abyssal peridotites indicate the presence of old depleted mantle material in this region with Re-depletion model ages (TRD) from 0.32 to 1.1Ga. Melt inclusions in plagioclase phenocrysts of the MORB close to this location have boninitic composition, suggesting that some basalts originated from low-degree mantle melting. The global tomography models show fast seismic velocities in the upper and lower mantle of the Equatorial Atlantic Ocean, consistent with the presence of cold subducted lithosphere. The range of Re-depletion model ages are consistent with paleo-reconstructions of plate motion, suggesting that the fossil subducted slab was formed during the closure of both the Iapetus and the Rheic oceans.
Marisa Makler and Sidney Luiz de Matos Mello
Revista Brasileira de Geofisica, ISSN: 0102261X, Issue: SUPPL. 1, Pages: 107-114, Published: 2007 FapUNIFESP (SciELO)
Observed seafloor depths from 12 kHz bathymetry coupled with seafloor spreading magnetic anomalies were used to obtain depth anomalies across the Mid-Atlantic ridge axis between 2oS and 18oS. The theoretical seafloor depths were calculated from the plate cooling model and crustal ages depicted from seafloor spreading magnetic anomalies between 0 to 25 Ma. We noticed that the seafloor spreading magnetic anomalies are symmetric with respect to the ridge axis between Ascension and St. Helena Islands, but the depth anomalies are quite asymmetric. The east side of the ridge axis is shallower (~ 1,000 meters) than the west side, probably as a result of a thermal upwelling of the lithosphere. We suggest that a mantle plume located on the African Plate, which could represent a larger swell linked to Ascension, St. Helena and Fernando Po-Annobon Volcanic Lineament, might cause this type of anomaly.
Sidney L. M. Mello
Revista Brasileira de Geofisica, ISSN: 0102261X, Issue: SUPPL. 1, Published: 2007 FapUNIFESP (SciELO)
Revista Brasileira de Geofisica, ISSN: 0102261X, Pages: 589-590, Published: October 2006
Revista Brasileira de Geofisica, ISSN: 0102261X, Pages: 231-241, Published: April 2006
Sidney L. M. Mello and Jorge J. C. Palma
Revista Brasileira de Geofisica, ISSN: 0102261X, eISSN: 0102261X, Pages: 237-240, Published: 2000 FapUNIFESP (SciELO)
Sidney L. M. Mello and Sandra H. A. J. Quental
Revista Brasileira de Geofisica, ISSN: 0102261X, Pages: 411-430, Published: 2000 FapUNIFESP (SciELO)
The geological processes that lead to the formation of a new oceanic crust may cause intense hydrothermal activity. This activity supports the existence of an exotic fauna in deep ocean and also forms mineral deposits. Since the discovery of the first hydrothermal field on the East Pacific Rise, there has already been found about 100 hydrothermal sites associated with important metallic sulfide deposits. These sites occur along the oceanic spreading centers in different tectonic settings, but are not continuous globally. They are localized at specific sites where hot rocks are connected to faults and fractures, creating a permeable pathway for the hydrothermal circulation. Seawater penetrates into the oceanic crust and is modified to hydrothermal fluid with high temperature (up to 400°C), low pH and Eh. This fluid interacts with the rocks leaching and transporting metals, which precipitate as massive sulfides at the seafloor or as stockwork in the subseafloor. Metallic sulfide deposits can reach considerable size ranging from 1 to 100 million tones with high concentrations of copper, zinc, lead and precious metals such as gold and silver. Some of these deposits have recently attracted the interest of the scientific community and the international mining industry. They are good examples of modern analogues for understanding the genesis of volcanic-hosted massive sulfides on land and show strong potential mining in the near future. Here we provide a review on the deep-sea sulfide deposits, focusing on its formation, methods of exploration, location and characteristics (mineralogy/metal contents) of the main sites, and also the potential mining impacts.
S. L. M. Mello, J. R. Cann, and C. M. R. Fowler
Journal of Geophysical Research: Solid Earth, ISSN: 21699313, eISSN: 21699356, Volume: 104, Issue: B12, Pages: 29335-29349, Published: 1999 American Geophysical Union (AGU)
The Mid-Atlantic Ridge at 45°N has a ridge crest depth close to normal for slow spreading ridges and a crustal thickness of 6 km. However, the free-air gravity over the region is higher than expected for such axial depths, and erupted basalts are enriched in incompatible trace elements and radiogenic isotopes, which could be taken to indicate the presence of a mantle plume beneath the spreading axis. But the ridge is at normal depths and the crust is of normal thickness. We model free-air gravity across and parallel to the strike of the ridge. A density structure derived from a cooling model provides a good fit for gravity across the ridge axis. A gravity model along the ridge axis indicates that most of the gravity signal over the Azores and Reykjanes Ridge is related to thicker crust, while the gravity signal over 45°N can be modeled by a density anomaly, which extends along the spreading axis from about 43°N to 50°N and from zero age to 35 m.y. Such a mass excess can be explained by an increase in the garnet content of the mantle within the stability field of garnet peridotite. The enriched basalts occur in the same region as the mass anomaly. We interpret them as originating from cool hotspot mantle. This anomalous mantle may derive from a hotspot that existed at the North America-Africa-Eurasia triple junction when it was at 45°N between 59 and 26 m.y. The King's Trough Complex is the remnant of that hotspot. We consider that this cool hotspot mantle still underlies the spreading axis and contributes to crustal construction.
J. R. Cann, D. K. Blackman, D. K. Smith, E. McAllister, B. Janssen, S. Mello, E. Avgerinos, A. R. Pascoe, and J. Escartin
Nature, ISSN: 00280836, Volume: 385, Issue: 6614, Pages: 329-332, Published: 23 January 1997 Springer Science and Business Media LLC
The strips of ocean crust formed at the inside corners of both transform and non-transform offsets on the Mid-Atlantic Ridge are punctuated by topographic highs—the 'inside-corner highs'1–3—where plutonic rocks (including gabbros and peridotites) are frequently found4,5. Current tectonic models consider the inside-corner highs to be lower-crust and upper-mantle materials that have been exhumed by low-angle detachment faults dipping away from the inside corner to beneath the ridge axis3,6–8. But much of the evidence for the existence of such faults has hitherto been circumstantial. Here we present sonar images of two ridge–transform intersections on the Mid-Atlantic Ridge (near 30° N), which show that both active and 'fossil' inside-corner highs are capped by planar, dipping surfaces marked by corrugations and striations oriented parallel to the plate spreading direction. Although these surfaces may be the low-angle detachment faults envisaged by the models, they dip at much shallower angles than expected. This could be explained by the lubricating presence of serpentinized peridotite, fragments of which have been dredged from both surfaces. Alternatively, these slip surfaces may instead represent failure surfaces in serpentine-lubricated landslide zones.
Revista Brasileira de Geofisica, ISSN: 0102261X, Pages: 237-252, Published: 1996