bluuebunny/crossref_metadata_2025 huggingface dataset:
PlanetScope Radiometric Normalization and Sentinel-2 Super-Resolution (2.5 m): A Straightforward Spectral-Spatial Fusion of Multi-Satellite Multi-Sensor Images Using Residual Convolutional Neural Networks
Authors: Latte Nicolas , Lejeune Philippe
Published: July 2020

Sentinel-2 (S2) imagery is used in many research areas and for diverse applications. Its spectral resolution and quality are high but its spatial resolutions, of at most 10 m, is not sufficient for fine scale analysis. A novel method was thus proposed to super-resolve S2 imagery to 2.5 m. For a given S2 tile, the 10 S2 bands (four at 10 m and six at 20 m) were fused with additional images acquired at higher spatial resolution by the PlanetScope (PS) constellation. The radiometric inconsistencies between PS microsatellites were normalized. Radiometric normalization and super-resolution were achieved simultaneously using state-of–the-art super-resolution residual convolutional neural networks adapted to the particularities of S2 and PS imageries (including masks of clouds and shadows). The method is described in detail, from image selection and downloading to neural network architecture, training, and prediction. The quality was thoroughly assessed visually (photointerpretation) and quantitatively, confirming that the proposed method is highly spatially and spectrally accurate. The method is also robust and can be applied to S2 images acquired worldwide at any date.
Bedload Transport Monitoring in Alpine Rivers: Variability in Swiss Plate Geophone Response
Authors: Antoniazza Gilles , Nicollier Tobias , Wyss Carlos R. , Boss Stefan , Rickenmann Dieter
Published: July 2020

Acoustic sensors are increasingly used to measure bedload transport in Alpine streams, notably the Swiss plate geophone (SPG) system. An impact experiment using artificial weights is developed in this paper to assess the variability in individual plate response and to evaluate the extent to which calibration coefficients can be transferred from calibrated plates to non-calibrated plates at a given measuring site and/or to other measuring sites. Results of the experiment over 43 plates at four measuring sites have notably shown (a) that the maximum amplitude (V) recorded by individual plates tends to evolve as a power law function of the impact energy (J), with an exponent slightly larger than 1, for all the plates at all measuring sites; (b) that there is a substantial propagation of energy across plates that should be taken into account for a better understanding of the signal response; (c) that the response of individual plates is in most cases consistent, which suggests that calibration coefficients are comparable within and in between measuring sites, but site-specific and plate-specific variabilities in signal response have to be considered for a detailed comparison.
Evaluating the Effect of Prosopis juliflora, an Alien Invasive Species, on Land Cover Change Using Remote Sensing Approach
Authors: Tadros Maher J. , Al-Assaf Amani , Othman Yahia A. , Makhamreh Zeyad , Taifour Hatem
Published: July 2020

Invasive plant species (IPS) affect people’s livelihoods and well-being by providing both benefits and costs in different contexts. The objective of this study was to investigate the impact of Prosopis juliflora invasion on land cover change using ground survey and satellite sensor data derived from Landsat ETM+. The study was conducted at Sweimeh, Jordan Valley, between 1999 and 2017. The overall classification accuracy of remotely sensed data was 86% for 1999 and 80% for 2017. Accordingly, a remote sensing approach has the potential to assess land change/cover and aid in monitoring the IPS, specifically Prosopis invasion. Change detection analysis of Landsat classes (i.e., 1999 and 2017) showed that bare soil, urban, and water surface areas decreased by 6%, 11%, and 3%, respectively. Conversely, the vegetation class (i.e., IPS and native plants) increased by 20%. Ground surveys in 1999 and 2017 showed that the average vegetation area in Sweimeh invaded by Prosopis was approximately 60% in 1999 and 70% in 2017. Accordingly, the total estimated area invaded by P. juliflora at Sweimeh (2106 ha) in 1999 was approximately 92 ha, while Prosopis coverage in the same region was approximately 413 ha in 2017. The high emergence rate, the adaptation to high temperatures and low precipitation as well as governmental regulations which restrict the removal of trees, including IPS, were the main factors that prompted the extreme P. juliflora invasion in the Jordan Valley. The high invasion rate has led to a reduction in native species, including Tamarix spp., and dried up five natural water springs in the area. Overall, a monitoring plan should be applied to control the invasion problem by Prosopis in the valley. In addition, the conservation regulations that deal with IPS should be revised to mitigate the IPS risk.
Electromagnetic Shielding Effectiveness and Conductivity of PTFE/Ag/MWCNT Conductive Fabrics Using the Screen Printing Method
Authors: Cheng Hung-Chuan , Chen Chong-Rong , Hsu Shan-hui , Cheng Kuo-Bing
Published: July 2020

The management of the electromagnetic interference (EMI) of thin, light, and inexpensive materials is important for consumer electronics and human health. This paper describes the development of conductive films that contain a silver (Ag) flake powder and multiwall carbon nanotube (MWCNT) hybrid grid on a polytetrafluoroethylene (PTFE) film for applications that require electromagnetic shielding (EMS) and a conductive film. The Ag and MWCNT hybrid grid was constructed with a wire diameter and spacing of 0.5 mm. The results indicated that the proposed conductive films with 0.4 wt% MWCNTs had higher electromagnetic shielding effectiveness (EMSE) and electrical conductivity than those with other MWCNT loading amounts. The results also showed that the film with 0.4 wt% MWCNT loading had a high 62.4 dB EMSE in the 1800 MHz frequency and 1.81 × 104 S/cm electrical conductivity. This combination improved stretchability, with 10% elongation at a 29% resistivity change rate. Conductive films with Ag/MWCNT electronic printing or lamination technologies could be used for EMI shielding and electrically conductive applications.
Graduate Employability and Competence Development in Higher Education—A Systematic Literature Review Using PRISMA
Authors: Abelha Marta , Fernandes Sandra , Mesquita Diana , Seabra Filipa , Ferreira-Oliveira Ana Teresa
Published: July 2020

This paper aims to develop a systematic review on graduate employability and competence development, intending to present an international perspective on the matter. It analyses the role of higher education institutions in promoting the development of competences for employability. The Preferred Reporting Items for Systematic Reviews (PRISMA) statement was used as a formal systematic review guideline for data collection. Data was obtained from research studies over the period 2009–2019. The analysis included a total of 69 papers from Web of Science (WoS) and Scopus databases. Results show that Europe leads the number of publications on these topics during the past decade. One of the main issues associated with competence development and graduate employability found in the review is related to the (mis)match between university graduates’ competences and employers’ needs. Findings indicate that higher education institutions are concerned with using strategies to enhance the development of competences for graduate employability. Graduate employability and competence development around the world depend on a strong sense of innovation and collaboration practices implemented in higher education.
Wellbeing Costs of Technology Use during Covid-19 Remote Working: An Investigation Using the Italian Translation of the Technostress Creators Scale
Authors: Molino Monica , Ingusci Emanuela , Signore Fulvio , Manuti Amelia , Giancaspro Maria Luisa , Russo Vincenzo , Zito Margherita , Cortese Claudio G.
Published: July 2020

During the first months of 2020, the Covid-19 pandemic has affected several countries all over the world, including Italy. To prevent the spread of the virus, governments instructed employers and self-employed workers to close their offices and work from home. Thus, the use of remote working increased during the pandemic and is expected to maintain high levels of application even after the emergency. Despite its benefits for both organizations and workers, remote working entails negative consequences, such as technostress. The present study had a double aim: to test the psychometric characteristics of the Italian translation of the brief version of the technostress creators scale and to apply the scale to investigate technostress during the Covid-19 emergency. The research involved 878 participants for the first study and 749 participants for the second one; they completed a self-report online questionnaire. Results confirmed the three-factor structure of the Italian technostress creators scale and highlighted positive relationships between workload, techno-stressors, work–family conflict and behavioural stress. The role of remote working conditions has been analysed as well. The study provided a useful tool for the investigation of technostress in the Italian context. Moreover, it provided indications for practice in the field of remote working and workers’ wellbeing.
Balancing Complex Social and Technical Aspects of Design: Exposing Engineering Students to Homelessness Issues
Authors: Chen Diana A. , Chapman Mark A. , Mejia Joel Alejandro
Published: July 2020

This paper describes the development and implementation of a classroom experience involving problem-based and project-based learning with community engagement in an engineering design context. While most User-Centered Design courses ask students to critically analyze and synthesize user needs, particularly of users who they see as “not like them”, our version is unique in having students wrestle with concepts of power, privilege, and oppression alongside developing prototypes that address sociotechnical aspects of engineering design that are rarely discussed in engineering courses. The course project described in this paper was developed to integrate issues of homelessness with engineering design. To achieve this goal, we partnered with a local non-profit organization that provides access to safe, mobile showers for our unhoused neighbors. Considering the context and needs of people who experience homelessness, students built solar water heater prototypes that integrated with the mobile shower units of our partners. Our goal with this course is to demonstrate to students that technical solutions are often insufficient for solving sociotechnical problems. In this case, the partnership with the non-profit organization was critical to conveying to students that engineering alone cannot solve homelessness.
Building the Future on Lessons of Historic Reinforced Concrete
Authors: Bostenaru Dan Maria
Published: July 2020

This contribution presents the way the construction material reinforced concrete was introduced at the beginning of the 20th century, from both the technical (Hennebique system) and the philosophical points of view. The philosophy underlying the use of this material is evident in the theories on finding a language of form corresponding to tectonics, and its dialogue with timber, formulated by certain notable practicing architects of the time across Europe. Not to be neglected are aspects relating to the conservation of material and to interventions carried out over time. In Modernist times, this meant a change from the artistic expression of Art Nouveau. Today, it means technical adaptation. The paper addresses thus sustainability of intervention versus conservation.
Assessment of Wetland Ecosystem Health Using the Pressure–State–Response (PSR) Model: A Case Study of Mursidabad District of West Bengal (India)
Authors: Das Subhasis , Pradhan Biswajeet , Shit Pravat Kumar , Alamri Abdullah M.
Published: July 2020

Wetlands are essential for protein production, water sanctification, groundwater recharge, climate purification, nutrient cycling, decreasing floods and biodiversity preservation. The Mursidabad district in West Bengal (India) is situated in the floodplain of the Ganga–Padma and Bhagirathi rivers. The region is characterized by diverse types of wetlands; however, the wetlands are getting depredated day-by-day due to hydro-ecological changes, uncontrolled human activities and rapid urbanization. This study attempted to explore the health status of the wetland ecosystem in 2013 and 2020 at the block level in the Mursidabad district, using the pressure–state–response model. Based on wetland ecosystem health values, we categorized the health conditions and identified the blocks where the health conditions are poor. A total of seven Landsat ETM+ spaceborne satellite images in 2001, 2013 and 2020 were selected as the data sources. The statistical data included the population density and urbanization increase rate, for all administrative units, and were collected from the census data of India for 2001 and 2011. We picked nine ecosystem indicators for the incorporated assessment of wetland ecosystem health. The indicators were selected considering every block in the Mursidabad district and for the computation of the wetland ecosystem health index by using the analytical hierarchy processes method. This study determined that 26.92% of the blocks fell under the sick category in 2013, but increased to 30.77% in 2020, while the percentage of blocks in the very healthy category has decreased markedly from 11.54% to 3.85%. These blocks were affected by higher human pressure, such as population density, urbanization growth rate and road density, which resulted in the degradation of wetland health. The scientific protection and restoration techniques of these wetlands should be emphasized in these areas.
Quantitative Assessment of Natural Disaster Coping Capacity: An Application for Typhoons
Authors: Wang Ting , Yang Linsheng , Wu Shaohong , Gao Jiangbo , Wei Binggan
Published: July 2020

At present, natural disaster coping capabilities are quantitively represented as high, moderate, or low. These classifications, which are described as the results of relative grades, have failed to reveal the specific grades of disaster coping capacity. Therefore, an assessment method of natural disaster coping capacity, which is attempted to quantify the natural disaster coping capacity as disaster grades, was proposed in this study. First, an indicator system consisting of disaster reduction ability index, disaster resilience ability index, and disaster relief ability index was established. The index values were defined as disaster grades according to the historical disaster-related data and information on the equipment and infrastructure for disaster prevention. Second, the weights assigned to these indicators were assessed by using the analytic hierarchy process (AHP). Then, the back propagation (BP) neural network was used to examine the indicator weights. Finally, the disaster coping capacity was estimated by using the fuzzy comprehensive evaluation model. The assessment result was characterized as disaster grade. Cangnan county was chosen as a case study for the assessment of typhoon coping capacity by the proposed method. The results showed that the coping capacity of the county was prepared to deal with 12–13 intensity grades of typhoon. The assessment carried out using the proposed method accurately reflected the typhoon coping capacity of Cangnan. Moreover, the index values of disaster reduction ability, disaster resilience, and disaster relief ability revealed the advantages and limitations of typhoon coping capacity. This suggests that natural disaster coping capacity can be quantitatively assessed by the proposed method.
Regression Model of PM2.5 Concentration in a Single-Family House
Authors: Załuska Monika , Gładyszewska-Fiedoruk Katarzyna
Published: July 2020

The purpose of this study is to model air pollution with the PM2.5 suspended particulate in a single-family house located in Bialystok. A linear regression model was developed that describes the relationship between the concentration of PM2.5 (response variable) in a building and external factors: concentrations of PM10 and PM2.5 particulates, air temperature and relative humidity (independent variables). Statistical and substantive verification of the model indicates that the concentration of PM10 in outdoor air is the variable most strongly affecting the concentration of harmful PM2.5 in indoor air. The model therefore allows estimating the concentration of PM2.5 in the building on the basis of data on the concentration of PM10 outside the tested object, which can be useful for assessing indoor air quality without using a measuring tool inside the building. Excel and GRETL were used to develop the model.
Construction of Local Shape Adjustable Surfaces Using Quintic Trigonometric Bézier Curve
Authors: Ammad Muhammad , Misro Md Yushalify
Published: July 2020

Based on quintic trigonometric Bézier like basis functions, the biquintic Bézier surfaces are modeled with four shape parameters that not only possess the key properties of the traditional Bézier surface but also have exceptional shape adjustment. In order to construct Bézier like curves with shape parameters, we present a class of quintic trigonometric Bézier like basis functions, which is an extension of a traditional Bernstein basis. Then, according to these basis functions, we construct three different types of shape adjustable surfaces such as general surface, swept surface and swung surface. In addition to the application of the proposed method, we also discuss the shape adjustment of surfaces showing with curvature nephogram (with and without fixing the boundaries). However, the modeling examples shows that the suggested approach is efficient and easy to implement.
Melioidosis and the Heart: A Systematic Review
Authors: Velusamy Ragani , Muhi Stephen
Published: July 2020

Melioidosis is caused by Gram-negative bacterium Burkholderia pseudomallei. Clinical presentation can vary from pneumonia, sepsis and multi-focal abscess formation. The aim of this study was to systemically review the cardiac manifestations of melioidosis in the literature and describe their epidemiology, microbiological diagnosis and outcomes. A systematic review of the peer-reviewed literature was carried out in PubMed and Google Scholar for human melioidosis cases with cardiac involvement. Quantitative data for cases of melioidosis were obtained, including age, sex, microbiological diagnosis, treatment, and outcome. 980 articles were screened, of which 31 articles were eligible. The most common cardiac site of infection was pericarditis, followed by endocarditis and myocarditis. Over 95% of cardiac involvement occurred in males, and mortality was the lowest in pericarditis and highest in myocarditis. Valvular vegetations were all small, left-sided, and did not require surgery. Antibiotic treatment included a bactericidal induction therapy with ceftazidime or a carbapenem ± TMP-SMX, followed by eradication therapy with TMP–SMX in most patients as previously established. In conclusion, melioidosis varies in clinical presentation and is also known as a great imitator. Although cardiac involvement is rare, this is the first systematic review to summarise all cases reported in the literature to date.
Oxygen Gradients and Structure of the Ciliate Assemblages in Floodplain Lake
Authors: Babko Roman , Kuzmina Tetiana , Danko Yaroslav , Szulżyk-Cieplak Joanna , Łagód Grzegorz
Published: July 2020

This paper presents the results of studies on the structure of the ciliate population in a freshwater lake. The classification of the ciliated communities based on the analysis of the distribution of ciliate population density in the lake along the oxygen gradients, taking into account their oxygen preferences, was proposed. It was shown that the distribution of ciliated protozoa in the space of a reservoir is determined not by such spatial units as the water column, bottom, and periphytal, but by the oxygen gradients. Four types of habitats with different oxygen regimes were distinguished: With stably high oxygen concentration, stably low oxygen concentration, stably oxygen-free conditions, and conditions with a high amplitude of diurnal oxygen variations. The location of these habitats in the space of the lake and their seasonal changes were determined. On the basis of the quantitative development of ciliate populations, zones of optima and tolerance ranges of some ciliate species in the oxygen gradient were established. The oxygen preferences were established for the species from four distinguished assemblages: Microoxyphilic, oxyphilic, euryoxyphilic, and anoxyphilic (anaerobic). The presence or the absence of a certain type of assemblage in the reservoirs depends solely on the parameters of the oxygen gradients. The diversity of the ciliated protozoa in water bodies also depends on the stability and diversity of the oxygen gradients.
Potential Enhancement of the In-Situ Bioremediation of Contaminated Sites through the Isolation and Screening of Bacterial Strains in Natural Hydrocarbon Springs
Authors: Rizzo Pietro , Malerba Matilde , Bucci Antonio , Sanangelantoni Anna M. , Remelli Sara , Celico Fulvio
Published: July 2020

Petroleum hydrocarbon contamination (PHC) is an issue of major concern worldwide. These compounds represent the most common environmental pollutants and their cleaning up is mandatory. The main goal of this research was to analyze microbial communities in a site in southern Italy characterized by the presence of hydrocarbons of natural origin by using a multidisciplinary approach based on microbiological, geological and hydrological investigations. Bacterial communities of two springs, the surrounding soils, and groundwater were studied through a combination of molecular and culture-dependent methodologies to explore the biodiversity at the study site, to isolate microorganisms with degradative abilities, and to assess their potential to develop effective strategies to restore the environmental quality. Next-generation sequencing revealed the dominance of species of the Proteobacteria phylum but also the presence of other autochthonous hydrocarbon-oxidizing microorganisms affiliated to other phyla (e.g., species of the genera Flavobacterium and Gordonia). The traditional cultivation-based approach led to the isolation and identification of 11 aerobic hydrocarbon-oxidizing proteobacteria, some of which were able to grow with phenanthrene as the sole carbon source. Seven out of the 11 isolated bacterial strains produced emulsion with diesel fuel (most of them showing emulsifying capacity values greater than 50%) with a high stability after 24 h and, in some cases, after 48 h. These results pave the way for further investigations finalized at (1) exploiting both the degradation ability of the bacterial isolates and/or microbial consortia to remediate hydrocarbon-contaminated sites and (2) the capability to produce molecules with a promoting effect for oil polluted matrices restoration.
The Effect of a Sand Interlayer on Soil Evaporation during the Seasonal Freeze–Thaw Period in the Middle Reaches of the Yellow River
Authors: Xue Jing , Feng Huijun , Chen Junfeng , Zheng Xiuqing , Du Qi
Published: July 2020

Reducing soil evaporation in arid and semi-arid areas of the Yellow River Basin greatly benefits the efficient utilization of water resources in winter and spring, particularly during the seasonal freeze–thaw period. We conducted a field experiment in winter to understand the influences of different sand interlayers (depths of 5, 10, and 15 cm and particle sizes of 0.5–1.5 mm and 2.0–2.5 mm) on soil evaporation during the seasonal freeze–thaw period. The results show that the sand interlayer reduced soil evaporation during the seasonal freeze–thaw period. Decreasing the depth of the sand layer was more effective at reducing the evaporation than increasing the grain size. Soil evaporation reduced as the sand interlayer approached the surface. With constant particle size, total soil evaporation decreased by 40%, 20%, and 18% for sand interlayer depths of 5, 10, and 15 cm, respectively, compared to the homogeneous soil column. With a constant sand interlayer depth, the inhibition of soil evaporation for a particle size of 0.5–1.5 mm was clear. That is significant for improving the efficient utilization of water resources and sustainable development of agriculture in the Yellow River Basin.
Reflexiones sobre la cambiante esfera de la reproducción social y la lucha de clases: casos de Perú y España
Authors: Smith Gavin
Published: July 2020

¿A qué se refiere el término “reproducción social”? Sugiero en primer lugar que, a pesar de su uso común, lo utilizamos para referirnos a actividades bastante distintas y a menudo inconsistentes; y segundo, que según cualquier definición, el ámbito de “reproducción social” cambia en función de formas históricamente específicas de capitalismo. En referencia a dos casos, uno en el centro de Perú desde 1950 hasta 1970, y el otro en el sur del País Valenciano desde 1970 hasta 2000, sugiero que los ‘livelihoods’ que la gente tiene que defender necesariamente incluyen tanto lo que llamaríamos ‘el proceso laboral’ en términos limitados, como también elementos de los medios de producción que se necesitan para que puedan seguir ese proceso laboral. Por lo tanto, no es solo el capitalista el que debe asegurarse de que los “instrumentos de trabajo se mantengan” (Marx), sino, en estos casos, también tienen que hacerlo los trabajadores. Esto modifica efectivamente la arena de lo que llamaríamos “reproducción social” y, por lo tanto, la política asociada a ella.
"El dinero es bueno, pero un amigo es mejor"
Authors: De L’Estoile Benoît
Published: July 2020

A partir de una etnografía de larga duración en los proyectos de asentamiento de un programa estatal en lo que habían sido Ingenios azucareros en el nordeste de Brasil, cuestiono en este artículo la aparente evidencia de « la economía » como marco privilegiado para comprender la situación de vida de los pobres, la que está estructurada por la precariedad y la incertidumbre sobre el futuro. Explorando la semántica del verbo portugués esperar (que condensa las acciones de esperar en el tiempo, de tener esperanza y de esperar algo probable) se analiza la pluralidad de posibles orientaciones frente al futuro de los antiguos trabajadores de la caña de azúcar, hoy beneficiarios de los proyectos de reforma agraria y sus estrategias para mitigar la incertidumbre en situaciones diversas. Mientras que la incertidumbre radical está fuera del control de las personas, éstas si pueden actuar sobre otras formas de incertidumbre relativas. Si bien el dinero es deseable, tiene un carácter transitorio, mientras que el valor de los amigos reside en su potencial de ayudar, especialmente en caso de crisis. En este sentido, la etnografía nos permite ir más allá de una "antropología económica" que propone analizar "otras economías", para explorar más bien los campos de oportunidades y los marcos de referencia que estructuran las situaciones de vida de las personas y las versiones locales de oikonomia, en su significado original de "gobierno de la casa" (gouvernement of houselhold).
Fibroblasts Accelerate Formation and Improve Reproducibility of 3D Cellular Structures Printed with Magnetic Assistance
Authors: Mishriki Sarah , Aithal Srivatsa , Gupta Tamaghna , Sahu Rakesh P. , Geng Fei , Puri Ishwar K.
Published: July 2020

Fibroblasts (mouse, NIH/3T3) are combined with MDA-MB-231 cells to accelerate the formation and improve the reproducibility of 3D cellular structures printed with magnetic assistance. Fibroblasts and MDA-MB-231 cells are cocultured to produce 12.5 : 87.5, 25 : 75, and 50 : 50 total population mixtures. These mixtures are suspended in a cell medium containing a paramagnetic salt, Gd-DTPA, which increases the magnetic susceptibility of the medium with respect to the cells. A 3D monotypic MDA-MB-231 cellular structure is printed within 24 hours with magnetic assistance, whereas it takes 48 hours to form a similar structure through gravitational settling alone. The maximum projected areas and circularities, and cellular ATP levels of the printed structures are measured for 336 hours. Increasing the relative amounts of the fibroblasts mixed with the MDA-MB-231 cells decreases the time taken to form the structures and improves their reproducibility. Structures produced through gravitational settling have larger maximum projected areas and cellular ATP, but are deemed less reproducible. The distribution of individual cell lines in the cocultured 3D cellular structures shows that printing with magnetic assistance yields 3D cellular structures that resemble
in vivo
tumors more closely than those formed through gravitational settling. The results validate our hypothesis that (1) fibroblasts act as a “glue” that supports the formation of 3D cellular structures, and (2) the structures are produced more rapidly and with greater reproducibility with magnetically assisted printing than through gravitational settling alone. Printing of 3D cellular structures with magnetic assistance has applications relevant to drug discovery, lab-on-chip devices, and tissue engineering.
O Master Plan como instrumento para reassentar a população de Bento Rodrigues atingida pelo rompimento da barragem de Fundão em Mariana, Minas Gerais: é possível falar de participação popular?
Authors: Souza Xavier Celiane , Gonçalves Carneiro Karine
Published: July 2020

Resumo
As práticas capitalistas neoliberais têm avançado sobre os territórios, dentre outros fatores, por flexibilizações e desregulações na legislação ambiental. No Brasil, a atividade minerária, desde o Brasil colônia, assume papel quase protagonista no contexto econômico. Segundo Gudynas (2009), o avanço do capital sobre os territórios torna a Natureza um produto comercializável a partir de sua objetificação, o que gera uma diversidade de danos e violações ao ambiente e às populações que nele habitam. Neste artigo analisaremos, a partir do rompimento da Barragem de Fundão ocorrido em 5 de novembro de 2015 em Mariana, Minas Gerais (Brasil), as formas de participação popular referentes ao processo de reassentamento coletivo do subdistrito de Bento Rodrigues — destruído pelo rejeito de minério oriundo da barragem. O objetivo é o de verificar como, neste processo, transcorreu o direito à participação das pessoas atingidas. Para isso, debruçaremos sobre o desenvolvimento do projeto denominado Master Plan de Bento Rodrigues a partir das atividades de campo realizadas.
 
Palavras-chave: participação popular, rompimento da Barragem de Fundão, desastre sociotécnico, reassentamento coletivo, Master Plan.
IN HONOR OF SZILÁRD TIBOR TÓTH
Authors: Annuk Maret , Waldberg Alexander , Efremov Dmitry Anatolyevich
Published: July 2020

Szilárd Tibor Tóth, PhD, Finno-Ugrist, Executive Editor of the Yearbook of Finno-Ugric Studies, lecturer at Narva College of Tartu University turned 50. He founded the journal “Finnugor Világ” in 1996. He has taught Hungarian in Tartu, Izhevsk, Kudymkar and Riga. His scientific interests include Estonian philology, contacts between Latvian and Finno-Ugric languages, Permic languages, lexicology, lexicography and culinary linguistics. In his dissertation, he gave his first overview of the history of the South Estonian Tartu literary language.
ON THE SPECIFICS OF THE ACTIVITIES OF THE PLENIPOTENTIARIES OF THE STATE DEFENSIVE COMMITTEE DURING THE GREAT PATRIOTIC WAR (ACCORDING TO DOCUMENTS OF FEDERAL AND REGIONAL ARCHIVES)
Authors: Repnikov D. V.
Published: July 2020

The article is devoted to such an important aspect of the activities of the plenipotentiaries of the State Defensive Committee during the Great Patriotic War, as conflicts of authority. Contradictions between the plenipotentiaries of the State Defensive Committee and the leaders of party, state, economic bodies at various levels, as well as between the plenipotentiaries themselves, that were expressed in the emergence of various disputes and often resulted in conflicts of authority, became commonplace in the functioning of the state power system of the USSR in the war period. Based on documents from federal (State Archive of the Russian Federation, Russian State Archive of Socio-Political History, Russian State Archive of Economics) and regional (Central State Archive of the Udmurt Republic, Center for Documentation of the Recent History of the Udmurt Republic) archives, the author considers a conflict of authority situation that developed during the Great Patriotic War in the Udmurt Autonomous Soviet Socialist Republic, which shows that historical reality is more complicated than the stereotypical manifestations of it.
Percepção da população sobre a importância do tratamento doméstico da água consumida em dois bairros do município de Codó (Maranhão, Brasil)
Authors: Privado Martins Ana Luiza , Miranda Coelho Meirinalva Batista , Sousa da Silva Walbert
Published: July 2020

Sabe-se atualmente que a origem da água de consumo e o seu tratamento por empresas destinadas a esse fim são importantes. Porém, além disso, é preciso que ela receba algum tipo de tratamento domiciliar antes de ser ingerida. Visto que muitas pessoas não dão esse tipo de atenção à água, o presente trabalho teve como objetivo realizar um estudo de percepção entre moradores de dois bairros do município de Codó (Maranhão) sobre a importância do tratamento doméstico da água consumida. Foram utilizados, como objetos de pesquisa, os seguintes bairros: Dalas (área nobre da cidade) e Santo Antônio (bairro mais carente). Para realização do trabalho foram feitas pesquisas bibliográficas e de campo, destacando-se a aplicação de questionários. No Dalas, observou-se que em todos os casos a água é proveniente de rede geral de distribuição, chegando transparente aos domicílios e que, mesmo assim, ela sempre é filtrada pelos moradores antes do consumo. No Santo Antônio, por outro lado, verificou-se que em alguns casos a água tem outra origem, como de poços. Além disso, nesse bairro, algumas vezes ela chega turva às casas, sendo que a maioria dos moradores não realiza nenhum tratamento doméstico antes que ela seja ingerida. Enquanto no Dalas os entrevistados afirmaram não ser comum a diarréia entre moradores, no Santo Antônio foi registrado que esta aparece de forma rara ou freqüente em muitos casos. Alguns fatores sociais demonstraram manter relação com a forma como a água é tratada nos domicílios, como a escolaridade, a renda e a ocupação profissional. Além disso, a diarréia pareceu manter estreita relação com o não tratamento da mesma antes da sua ingestão.
Modelagem ponderal de bovinos da raça Tabapuã utilizando modelos de regressão aleatória
Authors: Alves de Oliveira Marcelo Richelly , Guimarães Campelo José Elivalto , Ribeiro Azevêdo Danielle Maria Machado , Pires Luanna Chácara , De Sousa Júnior Severino Cavalcante
Published: July 2020

O Brasil é notadamente um dos maiores produtores de alimentos do mundo, onde no mesmo, é possível encontrar condições climáticas e de solo favoráveis, o que propicia uma produção diferenciada nas suas diferentes regiões. Dentre as aptidões que o país possui na produção de alimentos, a atividade pecuária têm sido uma das mais relevantes. Neste sentido, destaque deve ser dado à produção de bovinos, que conta com mais de 211 milhões de animais, e deste total, em torno de 140 milhões possuem aptidão para produção de carne. Nesta perspectiva, torna-se importante a adoção de ferramentas tecnológicas capazes de incrementar a produção pecuária, como a utilização de técnicas de melhoramento genético animal, principalmente pelo uso de métodos de seleção e cruzamentos, bem como a união destes. Como exemplo, tem-se a avaliação de parâmetros que caracterizam a curva de crescimento dos animais, com base na altura ou no peso em diferentes idades, comum em bovinos de corte. Essa avaliação geralmente é feita com a obtenção de dados longitudinais, ou medidas repetidas no tempo, que para sua análise, vêm sendo utilizado nos últimos anos, os modelos de dimensão infinita, ou modelos de regressão aleatória (MRA), por possibilitarem acompanhar a curva média de crescimento dos animais em um determinado período. Ao se adotar um modelo de dimensão infinita, como o de regressão aleatória, na análise de medidas repetidas no tempo, faz-se necessário a utilização de uma matriz de covariâncias de dimensão infinita, assim como no modelo. Nesta situação, uma alternativa apresentada é o uso das funções de covariâncias.
Influência da incorporação do óleo de algodão na estabilidade à oxidação do biodiesel produzido a partir de blendas de algodão e soja
Authors: Jacobina Mirelly Cristine Moreira , Fraga Isabel Matos , Cunha Neto Felipe Vieira
Published: July 2020

O presente estudou investigou a influência da incorporação do óleo de algodão ao óleo de soja, na estabilidade à oxidação de seu biodiesel. Foram produzidos três biodieseis, o primeiro feito a partir do óleo de soja puro (S100), o segundo produzido a partir da blenda de 70% de óleo de soja/ 30% de óleo de algodão (S70/A30) e o terceiro, produzido a partir da blenda de 50% de óleo de soja/ 50% de óleo de algodão (S50/A50). Após as análises observou-se que não houve influência negativa da incorporação de óleo de algodão na estabilidade à oxidação do biodiesel, ao contrário, a incorporação do referido óleo foi capaz de aumentar a estabilidade oxidadiva de 2,3 h para 2,8 h com o aumento da porcentagem de incorporação do óleo de algodão no óleo de soja.
DESENVOLVIMENTO DE BALA DE AÇAÍ ADICIONADA DE CAFEÍNA
Authors: Souza Lima Elaine Souza , ZANON DE SOUZA Samira Fonte , Andrade Leonardo Souza , Alves Ribeiro Mirna Albuquerque , Oliveira Sabaa Srur Armando Ubirajara
Published: July 2020

O presente trabalho teve como objetivo o desenvolvimento de um suplemento tipo bala mastigável à base da polpa de açaí e acrescida de cafeína como proposta de um veículo de antioxidantes e carboidratos de alto índice glicêmico para uso na prática desportiva. O açaí representa uma polpa com importante perfil de macronutrientes, minerais (Mn, Cu, Cr, B), vitaminas (A, C e E). A composição centesimal foi determinada com a finalidade de elaborar a tabela de informações nutricionais de acordo com a RDC 360/2003. Parâmetros fisicoquímicos e microbiológicos foram avaliados para garantia da qualidade final. A análise sensorial foi avaliada testes de aceitabilidade e intenção de compra utilizando-se escala hedônica de 5 pontos. A bala desenvolvida apresentou os parâmetros mínimos de qualidade físico-química e microbiológica de acordo com a legislação vigente correspondente. A amostra apresentou quantidade maior que 5% de IDR para vitamina C. O produto teve boa aceitação pelos provadores, sendo verificado índice de aceitação global do produto de 85,6%. O teste de intenção de compra demonstra que 56,73% provavelmente comprariam a bala de açaí e que apenas 0,96% certamente não comprariam o que sugere a possibilidade de produção do produto em escala comercial. O desenvolvimento da bala com adição de cafeína é uma alternativa para setor alimentício para fins especiais, pois a adição deste ingrediente torna-a um produto diferenciado energeticamente e com maior valor nutricional agregado devido a polpa de açaí.
Editorial
Authors: Arruda de Sousa Flavia
Published: July 2020

A Revista Acta Tecnológica, traz nesta edição, um conjunto de artigos em diversas áreas do conhecimento, sendo 3 (três) artigos na grande área de ciências Agrárias, 1 (um) em educação e 2 (dois) na área de ensino. Iniciando o volume 11, número 2, trazemos o artigo Efeito do uso de própolis sobre a presença de bactérias gram-positivas e negativas no liquido ruminal de bovinos, onde os autores analisaram os efeitos no líquido ruminal de bovinos submetidos a uma dieta suplementada com quatro tratamentos distintos. O segundo artigo, Desempenho de novilhos confinados com diferentes espaços individuais, traz uma análise do efeito no desempenho de novilhos, submetidos à confinamento coletivo considerando a disponibilidade de diferentes espaços individuais. No terceiro artigo, Desenvolvimento de bala de açaí adicionada de cafeína, os autores trazem a proposição de uma bala mastigável como um veículo de antioxidantes e carboidratos de alto índice glicêmico para uso na prática desportiva. No quarto artigo, Concepções de professores a respeito do processo de ensino-aprendizagem de biologia em uma escola pública de São Luís - MA, os autores promoveram uma análise considerando as concepções dos decentes a partir das suas experiências, desafios e perspectivas. No quinto artigo, Educação infantil e políticas educacionais: do que temos ao que queremos, os autores discutem as políticas que regem a Educação Infantil entre 1988, até a publicação da Lei nº 12.796 de 4 de abril de 2013. Finalizando este número da revista, temos o artigo Reflexão sobre o emprego de estratégias lúdicas no ensino de química para alunos surdos do ensino médio regular, o trabalho teve como objetivo analisar e discutir o acesso e inclusão de alunos surdos na disciplina de Química do nível médio regular.Agradecemos a todos os autores que submeteram seus trabalhos para esta edição e aos pareceristas pela disponibilidade em colaborar com o crescimento do periódico.Por fim, a equipe editorial da Revista Acta Tecnológica espera que este número atenda às expectativas dos leitores, trazendo artigos de qualidade técnico científica, cumprindo sua missão de divulgação e promoção de debates sobre temas de interesse estratégico para o desenvolvimento científico e tecnológico regional e nacional. Boa leitura!
FORMAÇÃO DE PROFESSORES DA EDUCAÇÃO PROFISSIONAL E TECNOLÓGICA- EPT E NARRATIVAS DE FORMAÇÃO: UMA REVISÃO LITERATURA
Authors: Dos Santos Juliani Natalia , Brancher Vantoir Roberto
Published: July 2020

Este artigo em como objetivo de estudo o estado da arte junto ao banco de dados da Scielo Brasil, referente às produções científicas que vem sendo realizadas com os temas formação de professores para Educação Profissional e Tecnológica-EPT e narrativas de formação docente, tendo o objetivo de mapear e discutir como se da à constituição dos saberes docentes para atuação no espaço da EPT. Para tal, se estabeleceu relações e aproximações teóricas a respeito da constituição profissional destes sujeitos, a partir da análise de conteúdo das produções existentes, com ênfase nas seguintes categorias temáticas: saberes docentes, imaginário e representações, trajetos formativos e identidade docente, tendo como base o ano da criação dos Institutos Federais de Educação, Ciência e Tecnologia em 2008 até o ano de 2016. Ao concluir a análise dos artigos publicados, identificou-se uma significativa preocupação com a formação dos professores da Educação Profissional e Tecnológica diante das políticas públicas referentes a esta modalidade, dando ênfase as narrativas de formação para o crescimento profissional de si e demais colegas. Percebeu-se, ainda, a carência de publicações sobre narrativas de professores da EPT, fomentando o uso destas narrativas para a formação e crescimento desse profissional.
PERCEPÇÃO AMBIENTAL E PROPOSTA DIDÁTICA SOBRE A DESMISTIFICAÇÃO DE ANIMAIS PEÇONHENTOS E VENENOSOS PARA OS ALUNOS DO ENSINO MÉDIO
Authors: Azevedo Bruna Rafaela Martins , Almeida Zafira da Silva de
Published: July 2020

Animais peçonhentos e venenosos frequentemente despertam o interesse geral dos estudantes, já que geralmente estão cercados de histórias populares, lendas e crendices. As concepções errôneas que cercam esses animais são acompanhadas de um desconhecimento geral sobre a biologia e formas de identificação das espécies, medidas de prevenção de acidentes e práticas corretas de primeiros socorros. A educação ambiental, neste contexto, tenta desconstruir visões equivocada da natureza e construir o conhecimento científico a partir do conhecimento popular, além de contribuir na conservação de espécies e ecossistemas. O presente trabalho teve como objetivo investigar o conhecimento prévio dos estudantes do ensino médio acerca dos mitos e verdades existentes sobre animais peçonhentos e venenosos e, ainda, elaborar um material didático complementar que auxilie as práticas pedagógicas dentro e fora de sala de aula. Foram entrevistadas 258 estudantes que responderam a um questionário semi-estruturado que trazia perguntas referentes às experiências prévias dos alunos com o tema, procedimentos de manejo de animais peçonhentos e primeiros socorros, além da definição correta de conceitos e espécies. Foi elaborada uma proposta de material didático complementar do tipo cartilha para auxiliar o professor na transmissão de conhecimentos específicos aos alunos. As respostas às perguntas dos questionários indicam uma carência na abordagem em sala de aula e na propagação de conceitos e ideias erradas sobre o tema o que contribui na disseminação de mitos e dificultam as estratégias de conservação.
ANÁLISE NUMÉRICA DO ESCOAMENTO E DOS COEFICIENTES AERODINÂMICOS EM AEROFÓLIOS SEM E COM A UTILIZAÇÃO DE FLAPS PLAIN
Authors: Fonseca William Denner Pires , Filho Lourival Matos de Sousa , Martins Genilson Vieira
Published: July 2020

Este trabalho apresenta o estudo numérico do escoamento e das características aerodinâmicas em aerofólios simétrico e assimétrico sem e com flap. Um modelo bidimensional, permanente e viscoso é adotado no problema. As equações da conservação de massa (Continuidade) e da conservação de movimento (Navier-Stokes) são diferenciadas pelo método dos volumes finitos através do software CFD (Computational Fluid Dynamics) ANSYS/Fluent™. Inicialmente o código numérico é validado com a comparação dos resultados obtidos numa simulação para um aerofólio da série NACA 4 dígitos sem flap com os resultados apresentados na literatura. Em seguida buscou-se averiguar como se comporta os campos de pressão e velocidade, as linhas de corrente, os coeficientes de sustentação e arrasto para os aerofólios simétrico (NACA 0012) e assimétrico (EPLLER 423) sem e com flap. Por fim é verificado qual aerofólio é mais eficiente aerodinamicamente.
OTIMIZAÇÃO DA SEGURANÇA EM CANTEIROS DE OBRAS UTILIZANDO VEÍCULOS AÉREOS NÃO TRIPULADOS (VANTS) COM CONTROLE DE VOO VIA ARDUINO YUN
Authors: Nascimento Jackson Silva , Tavares Gonçalves Bruna Bugarin , Dias Cintra Cynthia Leonis
Published: July 2020

Ao longo dos anos, a indústria da construção civil tem passado por constantes evoluções e transformações. Entretanto, nota-se um atraso na implantação de tecnologia de dispositivos móveis para melhorias no setor. Na área de gestão de segurança, esse ponto de vista é mais acentuado, uma vez que vários avanços tecnológicos podem ser utilizados em benefício da otimização desse setor de operação da construção. Uma dessas tecnologias é a implantação da tecnologia de veículos aéreos não tripulados (VANTs), em inglês Unmanned Aerial Veicheles (UAV), também conhecidos como drones. Na construção civil, seu uso ainda é limitado, principalmente para o suporte de inspeção no setor de segurança em canteiro de obras. O presente trabalho tem como objetivo investigar, de forma teórica, como os drones podem ser benéficos para a otimização da segurança na construção civil, mostrando um modelo a ser utilizado com o seu controle de voo realizado via Arduino Yun, fornecendo gerenciadores de segurança com rapidez, tais como imagens e vídeos em tempo real de inspeção no campo de limitação da obra, a fim de facilitar a inspeção de segurança do local de trabalho.