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This work is a review of the scientific literature related to the applications of Remotely Operated Vehicles (ROVs) in the Oil and Gas Industry to allow mechanics and robotic engineers, and other interested parties, to know the scope of some of the current various types of ROVs in the industry, and some of the current challenges faced. As a result, it is presented in this work, in an organized and orderly manner, some of the current applications and technologies. Papers were collected from various disciplines to form the first phase. The second phase included the selection of scientific journals and conference papers that discuss the use of ROV in the oil and gas industry. Finally, future applications are discussed. There is yet to be a solution for the high cost of using a support vessel in Inspections, Repairs and Maintenance (IRM) operations.

Current literature on information technology points to a scenario where resistance to change must be considered in all IT implementation processes. However, there is no consistency in the extant literature about the interplay among the several triggers to resistance to change in IT. This paper aims at surveying the literature and investigating their roles in IT change management. Fuzzy AHP (Analytical Hierarchical Process) is used to provide greater flexibility in understanding the answers. The results point to two main sets of behaviours (intrinsic and extrinsic), which find support from other management fields. This paper contributes to the literature by showing that contrary to what was formerly believed, resistance to change in IT is not as much linked to technical aspects but to personal and team-level causes.

Different firms and their supply chains faced many global impacts with the COVID-19 pandemic. The purpose of this paper is to analyse the scientific production about companies and the Covid-19 pandemic through bibliometric indicators associated with the most prolific journals, authors, documents, countries and institutions. IEEE Engineering Management Review and Industrial Marketing Management were the most relevant academic journals, which indicates the adaptation of businesses and supply chain resilience as major tendencies. Ivanov and Kraus are the most relevant authors. This paper contributes with a mapping of scientific production regarding companies and COVID-19. The new found information provides a basis for future studies that can help researchers and managers to minimize the effects of the current global crisis.

The essences from sylviculture have been usually used for pulp and paper and charcoal industries. For this, the offer of higher value-added examples as structural parts for civil construction is essential. Anyway, this utilization needs to be secured by criteria prescribed by standard documents such as ABNT NBR 7190 (1997) used in this study. Hence, the present paper evaluated the Corymbia citriodora wood to promote its effective use in buildings from the analysis of fourteen mechanical properties and two physical properties. To check the variation of the properties with the moisture content, two conditions were adopted: the initial at 30% and the standard point at 12%, according to prescriptions of this cited Brazilian standard. In total, 2189 repeats were carried out. Seven properties showed visible improvements and influences and in resistance with the observed moisture reduction: perpendicular and parallel compression values and static bending in the modulus of rupture, parallel tensile in the modulus of elasticity, and those strength properties of shear stress, tangential cleavage and toughness. These efficient mechanical resistances evinced that Corymbia citriodora wood could be applied for civil construction, following the trends pointed out by literature.

Unprecedented challenges have been imposed on global markets to minimise losses in the short and long supply chains. The purpose of this paper is to identify the impacts created by the Covid-19 pandemic on the short and long supply chains in Brazil. This paper analyses the short and long supply chains in Brazil, whose overriding data were consulted on the websites of supervisory bodies and agencies at home and abroad. Adopting a qualitative approach, the consultation of literature about short and long supply chains was to determine the impacts of the pandemic on them in Brazil, as well as the resilience adopted by many in the course of the outbreak of the new coronavirus. This study examines the resilience of the Brazilian supply chains when pointing out the impacts on them during the Covid-19 pandemic and the alternatives to continue operating. It was also found that short supply chain resilience plays a key role in the Brazilian food supply. The study is restricted to the context of Brazil and its particularities. Also, further studies are required to explore the economic and operating impacts on different sectors of the economy in the post-pandemic period.

In this paper, the lattice temperature in an InP-based 1570 nm InGaAsP buried tunnel junction photonic crystal vertical-cavity surface-emitting laser (BTJ-PhC VCSEL) was varied between 280 K until 370 K and its effects on the characteristics of the device was investigated. The temperature profiles of the BTJ-PhC VCSEL are obtained iteratively by considering their temperature-dependent material properties and the spatial distribution of all the significant heat sources. The thermal resistance used to model the electrical contacts causes about 8 K temperature increment above the ambient temperature (300 k) at a bias of 3 V and a 10.865 % increase in the threshold current is observed with temperature increment. This paper provides key results of the device characteristics upon lattice temperature, including the light power versus electrical voltage, the threshold current versus temperature, the wall-plug efficiency and the differential quantum efficiency versus temperature. Furthermore, various elements of heat sources within the active region were analyzed upon the increment of lattice temperature.

For most of the structural solutions, the construction industry in Brazil is based on the use of conventional reinforced concrete elements composed of concrete and steel bars. However, problems related to this traditional structural system, such as the corrosion of metallic bars exposed to aggressiveness environments, motivate the study of new materials to be used as a replacement of conventional bars. In this context, FRP (Fiber Reinforced Polymers) bars can be viable due to their good mechanical properties and resistance to aggressive environmental agents. Thus, the main objective of this paper was the evaluation of the bond stress of GFRP bars using pullout tests. Thus, twenty specimens were analyzed with two concrete compressive strengths of 30 MPa and 60 MPa and two different GFRP bar diameters of 9.5 and 16.0 mm. According to the test results, it was verified a high variability of the adhesion between the GFRP bar and the concrete. Concerning the statistical analysis of pullout tests performed and considering the methodology proposed to analyze the quality control, the variation coefficient varied from 13.71% to 20.17%, classifying the pullout tests performed as medium or poor. These results demonstrate that the response of the GFRP bars obtained in the pullout tests was not reliable, demonstrating the need for new research to obtain adhesion coefficients and anchoring lengths for use in structural designs with such materials.

This paper provides technological characterization and preliminary studies for the concentration of talc ore from the municipality of Caçapava do Sul, RS - Brazil, for the purpose of defining its process route. The characterization was made by in bench channel sampling, preparation of the material by comminution, followed by homogenization, fractionation, and analyses of particle size, mineralogy, chemical composition, brightness, density and humidity of the sampled material. Afterwards, magnetic separation studies were carried out using Davis tube and leaching, in order to reduce the impurities, which consisted mainly of iron oxide contamination. After preparation of the sample, it was possible to obtain a fine material of approximately 65 % passing 37 μm, with similar brightness values between all samples despite a variable distribution of Fe, Ca, Mg and Al contents. The best results of the study occurred for the sample with a granulometric cut of 100# subjected to a magnetic separation of 4050 G and later leaching at 80 °C for a time of 60 min. A maximum brightness of 72.3 % was achieved, with an increase in brightness of 10.3 % in relation to the initial brightness. This product could be applied to the paint, insecticide, textile and paper industries, requiring complementary characterization to fit further specifications.

The purpose of this article is the answer of the question if interregional cooperation supported by economic policy of UE fosters tourism development and if yes in what way. The relation between tourism and interregional cooperation is relatively seldom analysed in comparison with other strands of territorial cooperation such as crossborder and transnational cooperation. This results from specific philosophy of interregional cooperation. In order to achieve the purpose of the paper it was necessary to present the system of interregional cooperation management and model of tourism in European Union. The paper analyses the period 2007 – 2013 when INTERREG IVC provided funding for interregional cooperation across Europe. The overall objective of the INTERREG IVC Programme was to improve the effectiveness of regional policies and instruments with special attention to the areas of support such as: • innovation and the knowledge economy, • environment and risk prevention. Tt could be assumed that it had been possible to include tourism in tourism projects implemented within Interreg IV C. To prove it the qualitative and quantitative analysis of 204 projects divided into 12 themes has been done. Aditionally the database of good practices was analyzed. The analysis of its documents allowed to identify 60 tourism-related good practices. These practices focused on cultural and sustainable tourism.

The number of Mining Engineering courses has increased in Brazil since 2004, resulting in a significant rise in the number of graduates. However, such growth was not followed by an equivalent rise in the number of applications for professional registration as a Mining Engineer with the Regional Engineering Councils, which might indicate a shortage of professional opportunities in the marketplace. This paper addresses the current labor market scenario for mining engineers in Brazil, taking sources of formal employment data as a basis: the Labor Ministry’s CAGED and RAIS employee data systems. It was found that there has been a significant asymmetry between the number of graduates and the number of mining engineers formally registered in the country in recent years. Moreover, the number of mining engineers’ dismissals exceeds the hiring figures as of 2012, in contrast with the previous expansion forecasts in this industry, elaborated in 2010 and 2014, based on which new Mining Engineering courses had been opened.