cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14329201
title: EFFICACY AND MANNER OF EXECUTION OF THE SERVE IN TOP-LEVEL WOMEN'S BEACH VOLLEYBALL PLAYERS

description: ABSTRACT The study of the manner of execution (technique, and spatial aspects) can provide useful information to understand the game dynamics in beach volleyball and to obtain references values for the analysis of the game and the establishment of training goals. The aim of the study was to determine the influence of the manner of execution on serve and rally performance in elite women's beach volleyball players. A total of 3,009 serves from 44 women’s players were analyzed. The variables studied were: serve technique, serve zone, serve destination, serve performance, and rally performance. An observational punctual, nomothetic, multidimensional, and intragroup design was used. A descriptive and inferential analysis of the data (Chi-Square Test) was done using SPSS v.21.0 software. The level of significance was set at p &lt; .05. The manner of execution influences the serve performance. The jump float serve was the most used. The most effective destination was the zone between players, probability due to the players' displacement and interference between them. An absence of association between serve technique and rally performance was found. These findings showed possible connections between the way of executing the serve with the following actions done by the players and the players' strategies to control their physical load. These values may be useful to guide to players training, or to evaluate players in competition.
DOI: 10.6084/m9.figshare.14329202.v1
title: THE EXPANSION OF PHYSICAL EDUCATION IN BRAZILIAN HIGHER EDUCATION

description: ABSTRACT This documentary research aimed to present considerations on the scenario of the expansion of Physical Education in the context of Brazilian higher education, focusing, on its main developments for the area. For this, we used data from the Statistical Synopses of the Higher Education Census, which were interpreted in light of the concepts of Pierre Bourdieu and Ulrich Beck. The results indicated that, on the basis of the expansion, there was the creation and opening of new Physical Education courses, presenting a considerable increase (874%),between 1991-2015. The expansion was mainly due to the private sector, which accounted for the highest growth (1,381%). This brings up side effects that have implied a set of challenges forPhysical Education in the country.
DOI: 10.6084/m9.figshare.14329201.v1
title: EFFICACY AND MANNER OF EXECUTION OF THE SERVE IN TOP-LEVEL WOMEN'S BEACH VOLLEYBALL PLAYERS

description: ABSTRACT The study of the manner of execution (technique, and spatial aspects) can provide useful information to understand the game dynamics in beach volleyball and to obtain references values for the analysis of the game and the establishment of training goals. The aim of the study was to determine the influence of the manner of execution on serve and rally performance in elite women's beach volleyball players. A total of 3,009 serves from 44 women’s players were analyzed. The variables studied were: serve technique, serve zone, serve destination, serve performance, and rally performance. An observational punctual, nomothetic, multidimensional, and intragroup design was used. A descriptive and inferential analysis of the data (Chi-Square Test) was done using SPSS v.21.0 software. The level of significance was set at p &lt; .05. The manner of execution influences the serve performance. The jump float serve was the most used. The most effective destination was the zone between players, probability due to the players' displacement and interference between them. An absence of association between serve technique and rally performance was found. These findings showed possible connections between the way of executing the serve with the following actions done by the players and the players' strategies to control their physical load. These values may be useful to guide to players training, or to evaluate players in competition.
DOI: 10.6084/m9.figshare.14329202
title: THE EXPANSION OF PHYSICAL EDUCATION IN BRAZILIAN HIGHER EDUCATION

description: ABSTRACT This documentary research aimed to present considerations on the scenario of the expansion of Physical Education in the context of Brazilian higher education, focusing, on its main developments for the area. For this, we used data from the Statistical Synopses of the Higher Education Census, which were interpreted in light of the concepts of Pierre Bourdieu and Ulrich Beck. The results indicated that, on the basis of the expansion, there was the creation and opening of new Physical Education courses, presenting a considerable increase (874%),between 1991-2015. The expansion was mainly due to the private sector, which accounted for the highest growth (1,381%). This brings up side effects that have implied a set of challenges forPhysical Education in the country.
DOI: 10.6084/m9.figshare.14329204
title: MOTOR COMPETENCE OF BRAZILIAN PRESCHOOL CHILDREN ASSESSED BY TGMD-2 TEST: A SYSTEMATIC REVIEW

description: ABSTRACT The Gross Motor Development Test (TGMD-2) is a discriminant and norm-referenced test used to assess the competence level of children aged 3 to 10 years. The aim of the present study was to systematically review the results of Brazilian studies that examined the motor development of preschool children using the TGMD-2 test, considering the different regions of Brazil, as well as to analyze the results related to the factors associated with the performance in the test TGMD-2; we reviewed the LILACS and SCIELO databases using the term “TGMD-2” as the descriptor, searching for original published studies from 2007 to 2018, with full text available, in the Portuguese and English languages, which evaluated motor performance in preschool children using TGMD-2; data extraction included items: first author, local, periodical, objectives, design, sample characteristics, test performance results and related factors; quality of the studies was also evaluated. The ten studies included in the review indicated differences in motor performance in different regions. Signs of better motor performance were found in children of private school and who practice physical activity guided by a physical education professional.
DOI: 10.6084/m9.figshare.14329205.v1
title: PHYSICAL ACTIVITY AND SPORTS PARTICIPATION ASSOCIATED WITH VIOLENCE IN ADOLESCENTS: A SYSTEMATIC REVIEW

description: ABSTRACT The present study conducted a review of the literature that aimed to investigate the relationship between the practice of physical activity (PA) and sports with violence and aggression among adolescents. A structured search was conducted on three databases (PubMed, Web of Science and Scielo) using three fields for the population (adolescents), PA/sports and violence/aggression. Of the 618 studies identified, 555 were screened by the title and abstract, 63 had the full text screened and 24 were selected for inclusion and analysis. Most studies were cross-sectional (53%), and sample size varied between 210 and 71854 adolescents. Metrics of violence and PA/sports were very diverse. Of the 24 analyzed studies, six studies found no association between PA/sports and violence, eight found that PA/sports were a protective factor, and 15 found a positive relationship between PA/sports and violence. The findings suggest that PA/sports are related to higher exposition to conflicts, and aggressive behavior, which may escalate to other relationships amongst adolescents outside of the context of PA/sports. The type of PA practiced may play an important role in promoting conflicts, with team-based sports with direct conflict being more likely to promote aggressiveness compared to individual sports without direct conflicts.
DOI: 10.6084/m9.figshare.14329204.v1
title: MOTOR COMPETENCE OF BRAZILIAN PRESCHOOL CHILDREN ASSESSED BY TGMD-2 TEST: A SYSTEMATIC REVIEW

description: ABSTRACT The Gross Motor Development Test (TGMD-2) is a discriminant and norm-referenced test used to assess the competence level of children aged 3 to 10 years. The aim of the present study was to systematically review the results of Brazilian studies that examined the motor development of preschool children using the TGMD-2 test, considering the different regions of Brazil, as well as to analyze the results related to the factors associated with the performance in the test TGMD-2; we reviewed the LILACS and SCIELO databases using the term “TGMD-2” as the descriptor, searching for original published studies from 2007 to 2018, with full text available, in the Portuguese and English languages, which evaluated motor performance in preschool children using TGMD-2; data extraction included items: first author, local, periodical, objectives, design, sample characteristics, test performance results and related factors; quality of the studies was also evaluated. The ten studies included in the review indicated differences in motor performance in different regions. Signs of better motor performance were found in children of private school and who practice physical activity guided by a physical education professional.
DOI: 10.6084/m9.figshare.14329205
title: PHYSICAL ACTIVITY AND SPORTS PARTICIPATION ASSOCIATED WITH VIOLENCE IN ADOLESCENTS: A SYSTEMATIC REVIEW

description: ABSTRACT The present study conducted a review of the literature that aimed to investigate the relationship between the practice of physical activity (PA) and sports with violence and aggression among adolescents. A structured search was conducted on three databases (PubMed, Web of Science and Scielo) using three fields for the population (adolescents), PA/sports and violence/aggression. Of the 618 studies identified, 555 were screened by the title and abstract, 63 had the full text screened and 24 were selected for inclusion and analysis. Most studies were cross-sectional (53%), and sample size varied between 210 and 71854 adolescents. Metrics of violence and PA/sports were very diverse. Of the 24 analyzed studies, six studies found no association between PA/sports and violence, eight found that PA/sports were a protective factor, and 15 found a positive relationship between PA/sports and violence. The findings suggest that PA/sports are related to higher exposition to conflicts, and aggressive behavior, which may escalate to other relationships amongst adolescents outside of the context of PA/sports. The type of PA practiced may play an important role in promoting conflicts, with team-based sports with direct conflict being more likely to promote aggressiveness compared to individual sports without direct conflicts.
DOI: 10.6084/m9.figshare.14329207.v1
title: EFFECTS OF INCLUSION OF PROPRIOCEPTION TRAINING IN THE RECOVERY OF ADULTS SUBMITTED TO ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION SURGERY: A SYSTEMATIC REVIEW

description: ABSTRACT Anterior cruciate ligament (ACL) rupture is an injury in young adults, triggering undesirable neuromuscular effects. A rehabilitation program is structured with exercises that aid in intensive care training, and proprioceptive training has been proposed as one of the training/rehabilitation methods in patients undergoing ACL reconstruction. Thus, this study aimed to analyze, through a systematic literature review, the effects of including proprioceptive training on different outcomes (stability/balance, proprioception, strength, functional capacity, coordination) after ACL reconstruction surgery in young adults. The search of the articles included studies in the last ten years, being a search conducted in November 2018. Searches were conducted in the electronic databases of PubMed and Science Direct with a following search methodology: ((“Proprioception” [Mesh] ) OR “Proprioception” [Word Text]) AND (“Anterior Cruciate Ligament” [Mesh] OR “Anterior Cruciate Ligament Reconstruction” [Mesh] OR “Anterior Cruciate Ligament Injury” [Mesh]). Six studies were selected for the analysis and the results obtained there is insufficient scientific evidence showing the positive effects of training in proprioceptive training after ACL reconstruction in adults, in view of a shortage of studies, such as discrepancies in findings, without time of intervention and in the tests contracted in the analysis of the variables.
DOI: 10.6084/m9.figshare.14329207
title: EFFECTS OF INCLUSION OF PROPRIOCEPTION TRAINING IN THE RECOVERY OF ADULTS SUBMITTED TO ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION SURGERY: A SYSTEMATIC REVIEW

description: ABSTRACT Anterior cruciate ligament (ACL) rupture is an injury in young adults, triggering undesirable neuromuscular effects. A rehabilitation program is structured with exercises that aid in intensive care training, and proprioceptive training has been proposed as one of the training/rehabilitation methods in patients undergoing ACL reconstruction. Thus, this study aimed to analyze, through a systematic literature review, the effects of including proprioceptive training on different outcomes (stability/balance, proprioception, strength, functional capacity, coordination) after ACL reconstruction surgery in young adults. The search of the articles included studies in the last ten years, being a search conducted in November 2018. Searches were conducted in the electronic databases of PubMed and Science Direct with a following search methodology: ((“Proprioception” [Mesh] ) OR “Proprioception” [Word Text]) AND (“Anterior Cruciate Ligament” [Mesh] OR “Anterior Cruciate Ligament Reconstruction” [Mesh] OR “Anterior Cruciate Ligament Injury” [Mesh]). Six studies were selected for the analysis and the results obtained there is insufficient scientific evidence showing the positive effects of training in proprioceptive training after ACL reconstruction in adults, in view of a shortage of studies, such as discrepancies in findings, without time of intervention and in the tests contracted in the analysis of the variables.
DOI: 10.6084/m9.figshare.14329144.v1
title: Open stope stability assessment through artificial intelligence

description: Abstract Underground mining is a set of methods that allows the extraction of ore in depth, ensuring sustainability and economic viability. One of the problems that arise in underground mine operations is open stope stability. The method for assessing stabil ity of open stopes is the stability graph proposed by Mathews et al. (1981). It is possible to estimate and provide information about this stability and assist in the decision mak ing about its viability. With the data obtained from 35 open stopes from a Zinc mine, the present study aims to use artificial intelligence techniques, specifically artificial neural networks, to process the data and classify the open stopes according to the sta bility regions of the graph. As a result, the applied methodology presented good asser tiveness for the classification of two classes, stable and unstable open stopes, resulting in a global probability success of 82% overall hit probability and 18% apparent error rate. For the classification into three classes, adding the transitional open stopes, the internal validation presented a global probability success of 91% and apparent error rate of 9%. In external validation, the network evaluation measures presented values of global probability success of 42% and apparent error rate of 58%.
DOI: 10.6084/m9.figshare.14329141.v1
title: Development of a low-cost alternative for the monitoring of the ore hauling production indicators in small-scale mining

description: Abstract Small and medium-sized mining represent an important part of a country's min eral economy. These companies, although substantial and numerous, have low invest ment potential in their development through new technologies. One of the problems small and medium mining companies face is the ore hauling production monitoring. This operation alone can constitute as much as 60% of the mining operating cost, due to intense fuel and tires consumption, and represents more than a half of the greenhouse gas emission in a quarry. Aiming at this problem, this article purposes to answer the following question: Is it possible to monitor the production of the ore hauling in small mining with a low-cost system? The results showed that yes, it is pos sible, using off-the-shelf solutions, regular office software and low use of labor. The results were validated in a quarry located in the State of São Paulo, where a US$ 490 system presented consistent results, improvements in fuel consumption and benefits to the environment.
DOI: 10.6084/m9.figshare.14329138.v1
title: Discrete element modeling of non-spherical particles using a spherical shape

description: Abstract Real non-spherical particles can be modeled using the Discrete Element Method (DEM) with sphere clusters, superquadrics, or polyhedral particles. However, in applications involving a considerable number of particles, the analysis can become impracticable. The goal of this study is to demonstrate how well spherical particles can reproduce the flow of differently shaped particles. In this analysis, four dry particles are employed with different shapes and sphericity: spherical particles and three non-spherical particles, constituted by a combination of three spherical particles. For each non-spherical particle ensemble, the respective angles of repose were determined with DEM simulations using a simple virtual flow box experiment. Next, the flow of spherical particles through the flow box was calibrated to reach the same angle of repose for each non-spherical particle ensemble by tuning friction coefficients. A comparison of the computational time of the simulations for each non-spherical particle and their spherical representation is presented and discussed. The results show that using spherical particles in DEM simulations reduces the computational processing time in relation to the use of irregular forms in the simulations by approximately 80%.
DOI: 10.6084/m9.figshare.14329136.v1
title: Modeling non-ideal velocity of detonation in rock blasting

description: Abstract The performance of commercial explosives is an important subject in rock blast ing modeling and simulation. As a result of its non-ideal behavior, these explosives usu ally react below their ideal detonation velocity. In these cases, the multi-dimensional effects, heterogeneities and confinement conditions become important for properly quantifying the detonation state. In this sense, an engineering approach to model two-dimensional steady non-ideal detonations for cylindrical stick explosives is used to quantify the expected detonation velocity for given reaction rate parameters and con finement conditions. Founded on an ellipsoidal shock shape approach (ESSA), the pro posed model combines the quasi-one-dimensional theory for the axial solution with the unconfined sonic post-flow conditions at the edge of the explosive. A mechanistic confinement approach is coupled with the ESSA model to estimate the effect of the inert confiner on the detonation flow. Finally, the proposed model is used to estimate the expected detonation velocity of two typical commercial explosives in a number of different confinement conditions.
DOI: 10.6084/m9.figshare.14329135.v1
title: Analysis of cracks and coating in iron ore pellets by digital image processing

description: Abstract The pelletizing process agglomerates ore fines previously considered as tailings and makes its application possible in the form of pellets. During the process, the pellets are subjected to various compressive forces and temperature changes, which cause ruptures in their surface. These ruptures (cracks) impair the performance of the pellets in the reduction furnaces and affect their strength. In addition to cracking, the formation of clusters inside the furnaces is also a problem for the reduction process because they compromise the flow of gases inside the furnaces. This bonding phenomenon occurs from the formation of iron bridges between pellets subjected to high temperatures. This problem can be minimized by coating the pellets with a mixture of magnesium oxides that inhibits bridging. The present study considered the importance of characterizing cracks and coating on the pellet surface and developed methodologies for the acquisition, processing and digital analysis of images acquired with a stereoscope. Adjustable sample holders were developed which made it possible to cover most of the surface area of the spherical object avoiding overlapping of analysis regions. The crack analysis routine used semantic segmentation and provided attributes such as mean thickness, area fraction and length. The coating analysis routine used color threshold segmentation and measured the fraction of the area occupied by the coating in the samples. The use of the sample holders was essential for the success of the acquisition procedure. The analysis routines were robust for different samples.
DOI: 10.6084/m9.figshare.14329133.v1
title: Comparative study of inclusion removal from liquid steel in the RH and argon purging processes

description: Abstract In order to improve steel quality, it is necessary to increase the cleanliness of the liquid steel; that is, to reduce the number and size of the inclusions in the liquid steel, as well as to control their chemical composition. For this purpose, processes (with different operating costs) are used, such as the bubbling of inert gas in the steel ladle and its treatment in the vacuum degasser RH. This article deals with inclusion removal through an argon purging process and RH treatment, and provides a comparison of their effectiveness using industrial data and a mathematical model. The inclusion count shows a strong exponential decay for RH treated heats with chemical heating, as expected. The same behavior is not seen for RH treated heats without chemical heating as well as an argon purging process. It is suggested that in the later cases, there could exist competition between inclusion removal and inclusion generation from sources, such as refractory-slag-metal interaction and open eye atmosphere metal interaction. It has been concluded that the RH and the argon purging processes are both able to reduce the amount of inclusions. However, the bubbling process would require a much smaller gas flow rate to avoid open eye formation.
DOI: 10.6084/m9.figshare.14329132.v1
title: Mineralogical characterization of copper lateritic ore from the Furnas deposit - Carajás, Brazil

description: Abstract Furnas is a small and not well-known copper sulfide deposit in the northern Carajás mineral province (Pará State, Brazil). Mineralogical and geochemical studies were performed on three weathered samples in order to verify the presence of copper in the lateritic minerals. According to these Cu-bearing minerals (malachite, e.g.), the weathered ore can be exploited. X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Transformed Infrared (FTIR) spectroscopy analyses have shown that the copper is mainly associated to cryptomelane and to clay minerals and, although goethite composes from 40 to 50% of the samples (weight %), less than 0.1% of the total Cu is associated to it. Based on the results, the weathering sequence could be established; the alteration processes were responsible for the dissolution of the copper primary sulfides; the Cu released by these sulfides is, afterwards, incorporated in biotites and vermiculites, following the gneiss schistosity. Afterwards, the biotites altered to an interstratified 10-14 Å (biotite-smectite-vermiculite) and subsequently to an Al-Fe-Cu smectite (nontronite); finally, smectite was altered to kaolinite and the Cu was leached.