cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7508402.v1
title: INFLUENCE OF IRRIGATION LEVELS AND PLANT DENSITY ON "SECOND-SEASON" MAIZE

description: ABSTRACT This study assessed the effect of different irrigation levels and plant densities on maize crops cultivated during the second season in the Western Border region of the State of Rio Grande do Sul. This work was conducted at the Federal Institute of Farroupilha - Alegrete Campus/RS - between January and June 2014. Treatments were arranged in a completely randomized 5 × 4 factorial design, with 3 replicates each. Irrigation of fixed amounts of water that were based on the evapotranspiration of the culture (Etc): 0, 50, 75, 100, and 125% of Etc were applied at 5-day intervals. Four densities of plants were defined (4, 7, 10, and 13 plants m-2). We assessed number of maize ears per plant, number of grains per ear, aboveground dry matter, mass of 100 grains, harvest index, and grain productivity. The number of grains per ear, mass of 100 grains, and grain yield were influenced by irrigation levels. Plant density and water depth influenced the number of grains per ear, the mass of 100 grains, and grain productivity. The highest yield of winter maize grain was achieved with a combination of 13 plants per m-2 and an irrigation level of 100% of Etc. Specific densities of plants maximized the yield of maize at each irrigation level, demonstrating that choice of plant density is a critical variable in the second crop of maize, and significantly influences the components of production.
DOI: 10.6084/m9.figshare.7518950
title: Leptin as a predictor of metabolic syndrome in prepubertal children

description: ABSTRACT Objective Leptin has been suggested as a potential biomarker of cardiovascular risk. This paper aims to ascertain, based on a sample of prepubertal children, which serum leptin value best suited to identify metabolic syndrome (MS). Subjects and methods This observational, cross-sectional study recruited children from the outpatient pediatrics clinic, with the purpose of validating serum leptin level cutoffs to identify MS. All obese and overweight children who met eligibility criteria were included in the study, as was a sample of normal-weight children. The sample underwent clinical assessment and blood fasting glucose, lipid profile, insulin, and leptin were measured. Sensitivity and specificity were estimated for each leptin measurement, using MS as the outcome. These values were used to construct a receiver operating characteristic (ROC) curve. The association between MS and leptin was assessed using logistic models to predict MS. Results A total of 65 normal weight, 46 overweight, and 164 obese children were analyzed (160 boys, 115 girls; age: 93.7 ± 17.8 months). The most appropriate leptin cutoff was 13.4 ng/mL (sensitivity 67.6%; specificity 68.9%; accuracy 72.1%). The logistic model indicated that leptin levels above 13.4 ng/dL were significantly associated with MS and that, for every 1 ng/dL increase in leptin levels, the odds of MS increase by 3% (p = 0.002; OR 1.03; 95% CI 1.01-1.05). Conclusions Leptin may be a useful biomarker of cardiovascular risk in prepubertal children, with an optimal cutoff of 13.4 ng/mL. Identification of potential new risk markers for cardiovascular disease in children could contribute to the development of preventive strategies.
DOI: 10.6084/m9.figshare.11997522.v1
title: Effect of a Circular Ring on the Side Force of a Cone-Cylinder Body

description: ABSTRACT: This paper aims to investigate the side force on a cone-cylinder geometry at different angles of attack (α) by adopting experiments and computations. The cone-cylinder configuration had a length to diameter ratio (L/D) of 10, and a base diameter (D) of 25 mm. The nose shape had a fineness ratio of approximately 3. Results indicated that the side force increases with the increasing of the angle of attack. A circular ring was used to reduce the side force at different angles of attack. Using a smaller height ring (2% of local diameter) in the initial portion of the body did not reduce the side force significantly at lower angles of attack. However, a ring with larger height (5% of local diameter) placed at 2.5 times the diameter of the body from the tip reduced the side force at almost all the angles of attack.
DOI: 10.6084/m9.figshare.14272390.v1
title: The Wind Environment Interactions Relative to Launch Vehicle Design

description: ABSTRACT Since atmospheric winds play the most critical natural enviroment (NE) role as input into the design and development of an aerospace launch vehicle, this paper provides a more detailed description of the wind environment and its interaction with engineering design in launch and space vehicle development applications at Kennedy Space Center (KSC).
DOI: 10.6084/m9.figshare.14272390
title: The Wind Environment Interactions Relative to Launch Vehicle Design

description: ABSTRACT Since atmospheric winds play the most critical natural enviroment (NE) role as input into the design and development of an aerospace launch vehicle, this paper provides a more detailed description of the wind environment and its interaction with engineering design in launch and space vehicle development applications at Kennedy Space Center (KSC).
DOI: 10.6084/m9.figshare.7510640
title: Being Young and Being a Student: between the school and the Facebook

description: Abstract: This article discusses the results of a qualitative research on the relationship between youth and mediatization in the contemporary culture with three groups of secondary education students. Data was collected by means of participatory observation and 333 questionnaires, 28 interviews and three discussion groups. It started with the assumption that the huge amount of technologies that are blended to people's lives, in general, has a singular effect on the youth life. The results indicated that the youth experienced extensive and heterogeneous mediatic connections, pervading their time and space, their affective and communicative links, and their school experiences in several ways, according to the situation observed.
DOI: 10.6084/m9.figshare.7516961
title: Brazilian human rights activism on the Inter-American Commission on Human Rights reports (1970-2015)

description: Abstract The formation of transnational advocacy networks has been a strategy increasingly used by petitioners of the Inter-American Commission on Human Rights to report human rights violations that occur in national territories and to demand effective responses of their countries. Recent studies claim that international organizations play a leading role within transnational advocacy networks. The main objective of this study is to identify the profile of the petitioners in Brazilian violations cases sent to the Commission between 1970 (year of the first report) and 2015. Based on data collected in the reports released by the Commission, we argue that contrary to what the literature suggests, Brazilian human rights activism on the Commission is qualitatively diverse and composed of domestic non-governmental organizations, social movements, individuals and other types of organizations that act autonomously.
DOI: 10.6084/m9.figshare.7518950.v1
title: Leptin as a predictor of metabolic syndrome in prepubertal children

description: ABSTRACT Objective Leptin has been suggested as a potential biomarker of cardiovascular risk. This paper aims to ascertain, based on a sample of prepubertal children, which serum leptin value best suited to identify metabolic syndrome (MS). Subjects and methods This observational, cross-sectional study recruited children from the outpatient pediatrics clinic, with the purpose of validating serum leptin level cutoffs to identify MS. All obese and overweight children who met eligibility criteria were included in the study, as was a sample of normal-weight children. The sample underwent clinical assessment and blood fasting glucose, lipid profile, insulin, and leptin were measured. Sensitivity and specificity were estimated for each leptin measurement, using MS as the outcome. These values were used to construct a receiver operating characteristic (ROC) curve. The association between MS and leptin was assessed using logistic models to predict MS. Results A total of 65 normal weight, 46 overweight, and 164 obese children were analyzed (160 boys, 115 girls; age: 93.7 ± 17.8 months). The most appropriate leptin cutoff was 13.4 ng/mL (sensitivity 67.6%; specificity 68.9%; accuracy 72.1%). The logistic model indicated that leptin levels above 13.4 ng/dL were significantly associated with MS and that, for every 1 ng/dL increase in leptin levels, the odds of MS increase by 3% (p = 0.002; OR 1.03; 95% CI 1.01-1.05). Conclusions Leptin may be a useful biomarker of cardiovascular risk in prepubertal children, with an optimal cutoff of 13.4 ng/mL. Identification of potential new risk markers for cardiovascular disease in children could contribute to the development of preventive strategies.
DOI: 10.6084/m9.figshare.7510640.v1
title: Being Young and Being a Student: between the school and the Facebook

description: Abstract: This article discusses the results of a qualitative research on the relationship between youth and mediatization in the contemporary culture with three groups of secondary education students. Data was collected by means of participatory observation and 333 questionnaires, 28 interviews and three discussion groups. It started with the assumption that the huge amount of technologies that are blended to people's lives, in general, has a singular effect on the youth life. The results indicated that the youth experienced extensive and heterogeneous mediatic connections, pervading their time and space, their affective and communicative links, and their school experiences in several ways, according to the situation observed.
DOI: 10.6084/m9.figshare.7516961.v1
title: Brazilian human rights activism on the Inter-American Commission on Human Rights reports (1970-2015)

description: Abstract The formation of transnational advocacy networks has been a strategy increasingly used by petitioners of the Inter-American Commission on Human Rights to report human rights violations that occur in national territories and to demand effective responses of their countries. Recent studies claim that international organizations play a leading role within transnational advocacy networks. The main objective of this study is to identify the profile of the petitioners in Brazilian violations cases sent to the Commission between 1970 (year of the first report) and 2015. Based on data collected in the reports released by the Commission, we argue that contrary to what the literature suggests, Brazilian human rights activism on the Commission is qualitatively diverse and composed of domestic non-governmental organizations, social movements, individuals and other types of organizations that act autonomously.
DOI: 10.6084/m9.figshare.6124607
title: HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION

description: ABSTRACT The objective of this work was to assess the effect of vegetation on the runoff coefficients of a Caatinga dry tropical forest before and after thinning. Thus, an experiment was conducted with evaluations in three hydrological years (2008, 2011 and 2013) in Iguatu, State of Ceará, Brazil. In 2008, the vegetation consisted of a 30-year regenerating Caatinga forest. The vegetation was subjected to thinning in 2009, 2011 and 2013, removing trees with less than 10-cm diameter at breast height. Hydrological responses were evaluated as a function of daily precipitation water depths, based on cumulative frequency distribution, by dividing precipitation events into three classes (CP) (CP≤30, 3050 mm). Significant differences between runoff coefficients before and after vegetation thinning were assessed through the Student's t-test (p&lt;0.01). Before thinning (2008), CP≤30 mm showed the highest runoff coefficient, differing statistically (p&lt;0.01) from the other years. The results of precipitation events of great magnitude (CP&gt;50 mm) indicate that the runoff is greatly dependent on rainfall characteristics and soil moisture conditions. The greater development of herbaceous vegetation due to thinning reduced the surface runoff.
DOI: 10.6084/m9.figshare.10296191.v1
title: Soil Seed Banks in a Forest Under Restoration and in a Reference Ecosystem in Southeastern Brazil

description: ABSTRACT The current study aims to characterize the soil seed banks in a forest under restoration and in a seasonal semideciduous forest remnant, as well as to quantitatively and qualitatively compare them in order to evaluate the seed bank potential to influence the restoration process. In total, 60 samples of soil seed banks were collected in two adjacent forests (30 in a 2.18-ha forest undergoing restoration process based on the planting of seedlings belonging to different tree species, after the forest was subjected to bauxite mining activity; and 30 in a 5.30-ha preserved forest fragment). The soil seed bank of the forest undergoing restoration recorded higher density of emerged seedlings than that of the reference ecosystem. Although the shrub-tree species in the investigated forests lacked floristic similarity, the highly similar dispersal syndrome distribution and the successional category of shrub-tree species in them have indicated that both forests underwent ecological processes. Therefore, the restoration process implemented in the mined area has successfully recovered the soil seed bank after a few years.
DOI: 10.6084/m9.figshare.10296191
title: Soil Seed Banks in a Forest Under Restoration and in a Reference Ecosystem in Southeastern Brazil

description: ABSTRACT The current study aims to characterize the soil seed banks in a forest under restoration and in a seasonal semideciduous forest remnant, as well as to quantitatively and qualitatively compare them in order to evaluate the seed bank potential to influence the restoration process. In total, 60 samples of soil seed banks were collected in two adjacent forests (30 in a 2.18-ha forest undergoing restoration process based on the planting of seedlings belonging to different tree species, after the forest was subjected to bauxite mining activity; and 30 in a 5.30-ha preserved forest fragment). The soil seed bank of the forest undergoing restoration recorded higher density of emerged seedlings than that of the reference ecosystem. Although the shrub-tree species in the investigated forests lacked floristic similarity, the highly similar dispersal syndrome distribution and the successional category of shrub-tree species in them have indicated that both forests underwent ecological processes. Therefore, the restoration process implemented in the mined area has successfully recovered the soil seed bank after a few years.
DOI: 10.6084/m9.figshare.6124607.v1
title: HYDROLOGICAL RESPONSES OF A WATERSHED TO VEGETATION CHANGES IN A TROPICAL SEMIARID REGION

description: ABSTRACT The objective of this work was to assess the effect of vegetation on the runoff coefficients of a Caatinga dry tropical forest before and after thinning. Thus, an experiment was conducted with evaluations in three hydrological years (2008, 2011 and 2013) in Iguatu, State of Ceará, Brazil. In 2008, the vegetation consisted of a 30-year regenerating Caatinga forest. The vegetation was subjected to thinning in 2009, 2011 and 2013, removing trees with less than 10-cm diameter at breast height. Hydrological responses were evaluated as a function of daily precipitation water depths, based on cumulative frequency distribution, by dividing precipitation events into three classes (CP) (CP≤30, 3050 mm). Significant differences between runoff coefficients before and after vegetation thinning were assessed through the Student's t-test (p&lt;0.01). Before thinning (2008), CP≤30 mm showed the highest runoff coefficient, differing statistically (p&lt;0.01) from the other years. The results of precipitation events of great magnitude (CP&gt;50 mm) indicate that the runoff is greatly dependent on rainfall characteristics and soil moisture conditions. The greater development of herbaceous vegetation due to thinning reduced the surface runoff.
DOI: 10.6084/m9.figshare.7676588
title: A Study of Consumer Behavior Towards the Retention Strategies of the Four Largest Mobile Phone Operators in Brazil

description: ABSTRACT This work aimed to check the attitude of consumers towards the maintenance strategies of relationship between enterprise/consumer, having as a field of study the four major mobile phone operators in the country (Claro, Oi, Tim, and Vivo). Its importance focuses on the contribution to studies on retention of consumers, principally in the research on the attitude of the consumer towards the retention strategies of organizations. To this end, the survey was divided into two steps. The first, qualitative, aimed to identify, through literature, how organizations can use such strategies through primary data collection and direct contact with companies which were used by the service providers. Subsequently, the second step was quantitative, by performing a survey with interviewers who collected the data by applying questionnaires directly to consumers, addressing them in shopping-malls and supermarkets it was verified which were their attitudes against the strategies identified in the first step. The results from the analysis obtained through statistical processing of data using software (SPSS), has brought important contributions, both to the literature on consumer attitude, and for managers in the management of relationships with their customers. The results have shown that the attitude of consumers in their three components (behavior, cognition and affection), are presented in different ways toward on retention strategies in the four ties (financial, social, structural and customization) used by mobile phone operators.
DOI: 10.6084/m9.figshare.7676588.v1
title: A Study of Consumer Behavior Towards the Retention Strategies of the Four Largest Mobile Phone Operators in Brazil

description: ABSTRACT This work aimed to check the attitude of consumers towards the maintenance strategies of relationship between enterprise/consumer, having as a field of study the four major mobile phone operators in the country (Claro, Oi, Tim, and Vivo). Its importance focuses on the contribution to studies on retention of consumers, principally in the research on the attitude of the consumer towards the retention strategies of organizations. To this end, the survey was divided into two steps. The first, qualitative, aimed to identify, through literature, how organizations can use such strategies through primary data collection and direct contact with companies which were used by the service providers. Subsequently, the second step was quantitative, by performing a survey with interviewers who collected the data by applying questionnaires directly to consumers, addressing them in shopping-malls and supermarkets it was verified which were their attitudes against the strategies identified in the first step. The results from the analysis obtained through statistical processing of data using software (SPSS), has brought important contributions, both to the literature on consumer attitude, and for managers in the management of relationships with their customers. The results have shown that the attitude of consumers in their three components (behavior, cognition and affection), are presented in different ways toward on retention strategies in the four ties (financial, social, structural and customization) used by mobile phone operators.
DOI: 10.6084/m9.figshare.7507679
title: Family satisfaction with a Children and Youth Psychosocial Care Center service (CAPSi) in the city of Rio de Janeiro

description: Abstract Introduction Family has become an active participant of the evaluation of mental health services process following the psychiatric care reform. In this context, one of the most commonly used measures to evaluate the service is satisfaction. This study aimed to evaluate a CAPSi and its relationship to sociodemographic and psychosocial aspects, among relatives of its patients. Methods Sectional epidemiological study that used: sociodemographic questionnaire, scale of stressful life events, quality of life, burden, social support and coping strategies. Results 102 families were interviewed, whose average overall satisfaction with the service was 3,9 (sd = 0,6). Satisfaction related factors were: treatment outcomes, hospitality and service competence, service privacy and confidentiality, diagnosis of autism, being female relative, less burden, better quality of life regarding physical, psychological and environmental aspects, greater material support and greater use of coping strategies focused on the problem. Conclusion The identification of factors that may influence the families satisfaction with the service, can be of great help for the construction of more adequate services to these families and patients.
DOI: 10.6084/m9.figshare.7513538.v1
title: An Approach to Outlier Detection and Smoothing Applied to a Trajectography Radar Data

description: ABSTRACT: The tracking of aerospace engines is reasonably achieved through a trajectography radar system that generally yields a disperse cloud of samples on tridimensional space, which roughly describes the engine trajectory. It is proposed an approach on cleaning radar data to yield a well-behaved and smooth output curve that could be used as basis for instant and further analysis by radar specialists. This approach consists on outlier detection and smoothing phases based on established techniques such as Hampel filter and local regression (LOESS). To prove the effectiveness of the approach, both filtered and unfiltered data are submitted to an extrapolation method, and the results are compared.
DOI: 10.6084/m9.figshare.7509257
title: Proposal for an evaluation model for municipal urban solid waste management in Brazil: a study conducted in the city of Curitiba

description: Abstract Urban solid waste management has become an inflection point for the local development of municipalities. There are several models for the planning, management and technology applied to urban solid waste, but there is no model that proposes to evaluate the development of municipal policies in this field in Brazil. The object of this article was to propose an evaluation model for the actions of the municipal authorities regarding their policies of urban solid waste management in the Brazilian context. The study was conducted in five methodological stages: understanding the variables; a Delphi study to validate the relations among the variables; the structuring of an evaluation model with the relation of the variables and their inter-relationships; definition of the documents and instruments for applying the model; application of the model to the case of Curitiba. The application of the model to the municipal plan of Curitiba emphasized that the city universalizes the service and provides the basic services of collection and final disposal. However, it reclaims and reuses very little of the waste. There is a planning process that is more pragmatic and less strategic, which should prioritize a link with the integrated chain management.