cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11609445
title: NUMERICAL AND EXPERIMENTAL INVESTIGATION OF AIR-WATER SYSTEM TO SIMULATE BUBBLE DYNAMICS IN LIQUID SODIUM POOL

description: Abstract The dynamics of rising bubbles in a liquid sodium pool plays a significant role in the estimation of the radiological source term during anticipated transients and normal operation of a fast reactor. Sodium is chemically reactive with air and water. Therefore, carrying out experiments using sodium on a reactor scale level requires extra precautions. We report an in-house experimental technique to depict the bubble dynamics along with numerical support to establish similarity behavior between water and liquid sodium, to reduce the number of experiments in sodium systems for in-depth knowledge of bubble dynamics in the case of the fast breeder reactor. In the present work, 3-D bubble dynamics is studied in the OpenFOAM platform and the validated numerical model is used to study bubble dynamics in sodium to establish similitude between the water and sodium systems. The bubble aspect ratio of 0.9 cm diameter bubbles in the sodium system is found to be in close agreement with that of 0.5 cm bubbles in the water system. Experimental and numerical findings suggest similarity of the aspect ratio between water and scaled-up sodium systems. The similarity criteria established between water and sodium are found to be very useful in conducting water-based experiments to study bubble dynamics in sodium systems.
DOI: 10.6084/m9.figshare.11609436
title: Diffusion and adaptation of the regulatory agency model in Brazil

description: Abstract This article examines the diffusion of independent regulatory agencies (IRAs) in Brazil, demonstrating how important domestic factors interplayed with traditional mechanisms of diffusion lead to an expressive process of agencification. Although top-down, bottom-up and horizontal mechanisms played an important role in the Brazilian agencification process, they fail to explain the creation of IRAs in unexpected sectors or the frequent modifications that occurred at subnational levels in a short period of time. To understand how local political actors adapted the regulatory agency model to the Brazilian institutional legacies, field research was conducted, based on bibliographical, documental, and interviews with key political actors. The specificities of Brazilian federalism and the strategic role of the film industry, bureaucrats and politicians in (re)interpreting the agency model helped to boost the diffusion of IRAs in Brazil.
DOI: 10.6084/m9.figshare.11609439
title: Breast elastography: diagnostic performance of computer-aided diagnosis software and interobserver agreement

description: Abstract Objective: To determine the best cutoff value for classifying breast masses by ultrasound elastography, using dedicated software for strain elastography, and to determine the level of interobserver agreement. Materials and Methods: We enrolled 83 patients with 83 breast masses identified on ultrasound and referred for biopsy. After B-mode ultrasound examination, the lesions were manually segmented by three radiologists with varying degrees of experience in breast imaging, designated reader 1 (R1, with 15 years), reader 2 (R2, with 2 years), and reader 3 (R3, with 8 years). Elastography was performed automatically on the best image with computer-aided diagnosis (CAD) software. Cutoff values of 70%, 75%, 80%, and 90% of hard areas were applied for determining the performance of the CAD software. The best cutoff value for the most experienced radiologists was then compared with the visual assessment. Interobserver agreement for the best cutoff value was determined, as were the interclass correlation coefficient and concordance among the radiologists for the areas segmented. Results: The best cutoff value of the proportion of hard area within a breast mass, for experienced radiologists, was found to be 75%. At a cutoff value of 75%, the interobserver agreement was excellent between R1 and R2, as well as between R1 and R3, and good between R2 and R3. The interclass concordance coefficient among the three radiologists was 0.950. When assessing the segmented areas by size, we found that the level of agreement was higher among the more experienced radiologists. Conclusion: The best cutoff value for a quantitative CAD system to classify breast masses was 75%.
DOI: 10.6084/m9.figshare.11609439.v1
title: Breast elastography: diagnostic performance of computer-aided diagnosis software and interobserver agreement

description: Abstract Objective: To determine the best cutoff value for classifying breast masses by ultrasound elastography, using dedicated software for strain elastography, and to determine the level of interobserver agreement. Materials and Methods: We enrolled 83 patients with 83 breast masses identified on ultrasound and referred for biopsy. After B-mode ultrasound examination, the lesions were manually segmented by three radiologists with varying degrees of experience in breast imaging, designated reader 1 (R1, with 15 years), reader 2 (R2, with 2 years), and reader 3 (R3, with 8 years). Elastography was performed automatically on the best image with computer-aided diagnosis (CAD) software. Cutoff values of 70%, 75%, 80%, and 90% of hard areas were applied for determining the performance of the CAD software. The best cutoff value for the most experienced radiologists was then compared with the visual assessment. Interobserver agreement for the best cutoff value was determined, as were the interclass correlation coefficient and concordance among the radiologists for the areas segmented. Results: The best cutoff value of the proportion of hard area within a breast mass, for experienced radiologists, was found to be 75%. At a cutoff value of 75%, the interobserver agreement was excellent between R1 and R2, as well as between R1 and R3, and good between R2 and R3. The interclass concordance coefficient among the three radiologists was 0.950. When assessing the segmented areas by size, we found that the level of agreement was higher among the more experienced radiologists. Conclusion: The best cutoff value for a quantitative CAD system to classify breast masses was 75%.
DOI: 10.6084/m9.figshare.11609436.v1
title: Diffusion and adaptation of the regulatory agency model in Brazil

description: Abstract This article examines the diffusion of independent regulatory agencies (IRAs) in Brazil, demonstrating how important domestic factors interplayed with traditional mechanisms of diffusion lead to an expressive process of agencification. Although top-down, bottom-up and horizontal mechanisms played an important role in the Brazilian agencification process, they fail to explain the creation of IRAs in unexpected sectors or the frequent modifications that occurred at subnational levels in a short period of time. To understand how local political actors adapted the regulatory agency model to the Brazilian institutional legacies, field research was conducted, based on bibliographical, documental, and interviews with key political actors. The specificities of Brazilian federalism and the strategic role of the film industry, bureaucrats and politicians in (re)interpreting the agency model helped to boost the diffusion of IRAs in Brazil.
DOI: 10.6084/m9.figshare.11609430
title: The everlasting outmoded contraceptive method mix in Brazil and its legacy

description: Abstract Fertility transition occurred in a short period of time in Brazilian the absence of family planning programs, and most noticeable, in a context of illegality in the provision of means of fertility self-regulation. These events did not happen without consequences. Based in the literature and facts registered during that time, the paper first discusses how the resistance to the implementation of family planning programs from the 1960s to the 1980s have contributed to the unbalanced contraceptive method mix in the 1990’s. Secondly, the paper will discuss problems around contraceptive data collection in the National Health Survey, and, performing an adjustment of the data, we analyze trends in the use of contraceptive methods from 1986 to 2013, showing that method mix continues to be very concentrated in the same two methods, an even more outdated scheme, with the daily pill exchanging first place with female sterilization. Finally, the paper discusses some fertility characteristics associated with the outdated contraceptive mix, still prevailing at the end of fertility transition, arguing that this could be avoided or minimized if policies and laws are based in reproductive rights of all people only.
DOI: 10.6084/m9.figshare.11609430.v1
title: The everlasting outmoded contraceptive method mix in Brazil and its legacy

description: Abstract Fertility transition occurred in a short period of time in Brazilian the absence of family planning programs, and most noticeable, in a context of illegality in the provision of means of fertility self-regulation. These events did not happen without consequences. Based in the literature and facts registered during that time, the paper first discusses how the resistance to the implementation of family planning programs from the 1960s to the 1980s have contributed to the unbalanced contraceptive method mix in the 1990’s. Secondly, the paper will discuss problems around contraceptive data collection in the National Health Survey, and, performing an adjustment of the data, we analyze trends in the use of contraceptive methods from 1986 to 2013, showing that method mix continues to be very concentrated in the same two methods, an even more outdated scheme, with the daily pill exchanging first place with female sterilization. Finally, the paper discusses some fertility characteristics associated with the outdated contraceptive mix, still prevailing at the end of fertility transition, arguing that this could be avoided or minimized if policies and laws are based in reproductive rights of all people only.
DOI: 10.6084/m9.figshare.11609424
title: Dorsal oral mucosa graft in combination with ventral penile flap as an alternative to repair obliterative stenosis of the anterior urethra in a single surgical time

description: ABSTRACT Purpose: Obliterative urethral stenosis is a type of urethral lesion that compromises the whole corpus spongiosum's circumference. We present our experience in resolving complex long segment urethral obliteration in a single procedure using a combination of dorsal onlay oral mucosa graft (OMG) and ventral fasciocutaneous penile skin flap. Materials and methods: A prospectively maintained database was reviewed, which included data of men presenting long, obliterative strictures. Patients were excluded if they were lost to follow-up before one year. Failure was defined as need for further urethral instrumentation. The surgical technique used consisted on the fixation of OMG to the tunica albuginea of the corpus cavernosum, thus creating a new urethral plate. Penile or foreskin flaps were employed to complete the ventral aspect. Postoperative follow-up was done with a voiding cystourethrography at week 3. Results: A total of 21 patients were included with a median age of 49 years. Mean follow-up was 25 months. Failure was found for 3 patients (2 of them needing dilations and only one required a new urethral reconstruction). Conclusion: Single stage combination of dorsal OMG with ventral fasciocutaneous penile flap showed good results for selected patients affected with obliterative urethral stenosis.
DOI: 10.6084/m9.figshare.11609427
title: Evidence of Criterion Validity of BILOv3 in Children in Southern Brazil

description: ABSTRACT To diagnose possible difficulties and intervene it is essential to preemptively evaluate the performance of children in oral language comprehension. In context, the present study aimed to look for evidences of criterion validity in the “Bateria Informatizada de Linguagem Oral (BILOv3)”,considering age, sex and level of education. 474 children between 6 and 11 years old, from the 5th grade of middle school from 10 schools from Rio Grande do Sul, took part in the study. The BILOv3 was administrated collectively and each child used a computer. Application of the instrument took approximately 35 minutes. Statistically significant differences were found for sex in the “Completar Histórias (CH)” and “Interpretar Histórias (IH)” tests, for age in the “Completar Frases (CF)” and “Completar Histórias (CH)” tests and for level of education in the CF, CH and IH tests. The BILOv3 is sensitive to capture differences between sex, school grade and age of students and, therefore, shows evidence of criterion validity. This suggests the possibility of clinical use and use in schools, aiming at early identification of language difficulties.
DOI: 10.6084/m9.figshare.11609421
title: Volunteering: an Assessment of the Motivation among Medical Students and the Experience in the Project “Caring for Your Health in Ponto dos Volantes, Jequitinhonha, MG”

description: ABSTRACT Objective This is a descriptive study divided into two distinct approaches to voluntary work among medical students. This article sought to understand the level of engagement of these students in voluntary projects and the repercussions generated by working in a volunteer project of the Federal University of Minas Gerais (UFMG) in a group of students. Methods The study was carried out in two parts. The first part is a cross-sectional study involving quantitative analysis, through which, with the use of an online questionnaire in Google Forms, 135 first- to sixth-year medical students from the Federal University of Minas Gerais (UFMG) were interviewed. Participants were asked whether or not they had engaged in voluntary services and the reasons for doing so. The second part of the article is a cross-sectional, qualitative analysis that evaluated the impact of the voluntary project “Caring for your health in Ponto dos Volantes”, promoted by the UFMG Medical School on the life of the participants. The project took place in July 2017 in Vale do Jequitinhonha, Minas Gerais, with 19 members, all of them undergraduate medical students. The opinions of 15 of the 19 students participating in the project were evaluated through the Google Forms platform. Results The results of the first study showed that 108 (80%) of the participants had previously done some voluntary work and 97.3% of them would like to participate in another similar activity. When questioned about the benefits that volunteering provided, personal growth was the most common answer, with 94 (25.06%) votes out of 375 votes; enhancing one’s curriculum vitae was not among the most voted, obtaining only 23 (6.13%) votes. Among those with no interest in volunteering, lack of time was the most common reason. In addition, 110 (81.48%) of the study participants stated that they would like to volunteer after graduation. In the second study, all 15 students (100%) who answered the questionnaire showed interest in carrying out new voluntary work. When asked about the impact of volunteering on their lives, only positive aspects were raised, such as valuing one’s life and that of others. As for the reason for engaging in the project, the vast majority mentioned the possibility of learning about different realities from daily life and college services. Conclusion Together, the two studies show that voluntary work has become a well-known feature in the life of UFMG medical students and that non-engagement in such projects is more due to lack of knowledge and dissemination than to lack of interest. Our study concluded that greater investment in the creation and dissemination of academic voluntary projects is needed and that this reality should be expanded not only within universities across the country but in schools and communities as a whole.
DOI: 10.6084/m9.figshare.11609424.v1
title: Dorsal oral mucosa graft in combination with ventral penile flap as an alternative to repair obliterative stenosis of the anterior urethra in a single surgical time

description: ABSTRACT Purpose: Obliterative urethral stenosis is a type of urethral lesion that compromises the whole corpus spongiosum's circumference. We present our experience in resolving complex long segment urethral obliteration in a single procedure using a combination of dorsal onlay oral mucosa graft (OMG) and ventral fasciocutaneous penile skin flap. Materials and methods: A prospectively maintained database was reviewed, which included data of men presenting long, obliterative strictures. Patients were excluded if they were lost to follow-up before one year. Failure was defined as need for further urethral instrumentation. The surgical technique used consisted on the fixation of OMG to the tunica albuginea of the corpus cavernosum, thus creating a new urethral plate. Penile or foreskin flaps were employed to complete the ventral aspect. Postoperative follow-up was done with a voiding cystourethrography at week 3. Results: A total of 21 patients were included with a median age of 49 years. Mean follow-up was 25 months. Failure was found for 3 patients (2 of them needing dilations and only one required a new urethral reconstruction). Conclusion: Single stage combination of dorsal OMG with ventral fasciocutaneous penile flap showed good results for selected patients affected with obliterative urethral stenosis.
DOI: 10.6084/m9.figshare.11609427.v1
title: Evidence of Criterion Validity of BILOv3 in Children in Southern Brazil

description: ABSTRACT To diagnose possible difficulties and intervene it is essential to preemptively evaluate the performance of children in oral language comprehension. In context, the present study aimed to look for evidences of criterion validity in the “Bateria Informatizada de Linguagem Oral (BILOv3)”,considering age, sex and level of education. 474 children between 6 and 11 years old, from the 5th grade of middle school from 10 schools from Rio Grande do Sul, took part in the study. The BILOv3 was administrated collectively and each child used a computer. Application of the instrument took approximately 35 minutes. Statistically significant differences were found for sex in the “Completar Histórias (CH)” and “Interpretar Histórias (IH)” tests, for age in the “Completar Frases (CF)” and “Completar Histórias (CH)” tests and for level of education in the CF, CH and IH tests. The BILOv3 is sensitive to capture differences between sex, school grade and age of students and, therefore, shows evidence of criterion validity. This suggests the possibility of clinical use and use in schools, aiming at early identification of language difficulties.
DOI: 10.6084/m9.figshare.11609421.v1
title: Volunteering: an Assessment of the Motivation among Medical Students and the Experience in the Project “Caring for Your Health in Ponto dos Volantes, Jequitinhonha, MG”

description: ABSTRACT Objective This is a descriptive study divided into two distinct approaches to voluntary work among medical students. This article sought to understand the level of engagement of these students in voluntary projects and the repercussions generated by working in a volunteer project of the Federal University of Minas Gerais (UFMG) in a group of students. Methods The study was carried out in two parts. The first part is a cross-sectional study involving quantitative analysis, through which, with the use of an online questionnaire in Google Forms, 135 first- to sixth-year medical students from the Federal University of Minas Gerais (UFMG) were interviewed. Participants were asked whether or not they had engaged in voluntary services and the reasons for doing so. The second part of the article is a cross-sectional, qualitative analysis that evaluated the impact of the voluntary project “Caring for your health in Ponto dos Volantes”, promoted by the UFMG Medical School on the life of the participants. The project took place in July 2017 in Vale do Jequitinhonha, Minas Gerais, with 19 members, all of them undergraduate medical students. The opinions of 15 of the 19 students participating in the project were evaluated through the Google Forms platform. Results The results of the first study showed that 108 (80%) of the participants had previously done some voluntary work and 97.3% of them would like to participate in another similar activity. When questioned about the benefits that volunteering provided, personal growth was the most common answer, with 94 (25.06%) votes out of 375 votes; enhancing one’s curriculum vitae was not among the most voted, obtaining only 23 (6.13%) votes. Among those with no interest in volunteering, lack of time was the most common reason. In addition, 110 (81.48%) of the study participants stated that they would like to volunteer after graduation. In the second study, all 15 students (100%) who answered the questionnaire showed interest in carrying out new voluntary work. When asked about the impact of volunteering on their lives, only positive aspects were raised, such as valuing one’s life and that of others. As for the reason for engaging in the project, the vast majority mentioned the possibility of learning about different realities from daily life and college services. Conclusion Together, the two studies show that voluntary work has become a well-known feature in the life of UFMG medical students and that non-engagement in such projects is more due to lack of knowledge and dissemination than to lack of interest. Our study concluded that greater investment in the creation and dissemination of academic voluntary projects is needed and that this reality should be expanded not only within universities across the country but in schools and communities as a whole.
DOI: 10.6084/m9.figshare.11609412
title: Factors associated with the route of birth delivery in a city in the Northeast region in the State of Rio Grande do Sul, Brazil

description: Abstract Objectives: to investigate factors associated with the route of birth delivery in a hospital extending public and private healthcare services, in the Northeast region in the State of Rio Grande do Sul. Methods: a cross-sectional study with 676 postpartum women, conducted from January to May 2017. The data were collected from the hospital records and women were interviewed shortly after childbirth in the maternity. Data analysis was performed by associating the Pearson’s chi-square and the Poisson regression tests with robust variance. Results: the prevalence of cesarean sections was 58.7%, that is, 41.7% in public health-care and 83.9% in private healthcare. The main reason for having a cesarean section was having had a previous one (PR=5.69; CI95%=3.64 - 8.90; p&lt;0.001), followed by having source of childbirth financing (PR=1.54; CI95%=1.27 - 1.87; p&lt;0.001), having source of prenatal care financing (PR=1.48; CI95%=1.22 - 1.79; p&lt;0.001), the childbirth and prenatal care professional (PR=1.46; CI95%=1.28 - 1.66; p&lt;0.001) and the prenatal care professional (PR=1.43; CI95%=1.07 - 1.90; p=0.016). Conclusions: the high cesarean section rates identified in this study were mainly associated with previous cesarean section. The findings suggest a change in the current childbirth care model in the city, characterized as highly medicalized, focused on the physician and on hospital care.
DOI: 10.6084/m9.figshare.11609415
title: Validity Evidence of a Scale Designed to Assess Children's Metacognition

description: ABSTRACT Thoughts and knowledge that individuals have about their own cognitive processes define the term metacognition. The aim of this work was to continue the validation process of Metacognition Scale (EMETA) analyzing evidence based on the structure and consistency internal and a comparison between the means to investigate the influences of variables such as gender, school type and age of participants. The results found with 196 participants between 9 and 12 years old indicate the presence of a single factor called Metacognition and the possibility to reduction for 40 items. There was no significant difference influenced by the three variables. Despite the favorable results to the accumulation of evidence of validity, other parameters must still be evaluated on future researches.