cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5666776
title: Diagnosing and analyzing of board directors’ competences

description: ABSTRACT A key issue when assessing a board of directors’ composition is defining the profile of directors’ desirable competences. This study follows competence theory to analyze the role of individual competences of board directors. We aim to answer the following questions: which are the required competences of board directors in non-listed companies, and what characteristics might lead to poor individual performance and adversely affect a board’s overall performance. To investigate these questions, a grounded theory-based study was conducted involving interviews with twelve board directors who had at least five years of experience as directors and extensive careers as top management executives. Results of the study led to a theoretical model which identifies a set of behavioral competences that add to previous studies on this subject.
DOI: 10.6084/m9.figshare.5666776.v1
title: Diagnosing and analyzing of board directors’ competences

description: ABSTRACT A key issue when assessing a board of directors’ composition is defining the profile of directors’ desirable competences. This study follows competence theory to analyze the role of individual competences of board directors. We aim to answer the following questions: which are the required competences of board directors in non-listed companies, and what characteristics might lead to poor individual performance and adversely affect a board’s overall performance. To investigate these questions, a grounded theory-based study was conducted involving interviews with twelve board directors who had at least five years of experience as directors and extensive careers as top management executives. Results of the study led to a theoretical model which identifies a set of behavioral competences that add to previous studies on this subject.
DOI: 10.6084/m9.figshare.5666773
title: Cost effectiveness of chemohormonal therapy in patients with metastatic hormone-sensitive and non-metastatic high-risk prostate cancer

description: ABSTRACT Objective To assess the cost-effectiveness of chemohormonal therapy in patients with metastatic hormone-sensitive and non-metastatic high-risk prostate cancer. Methods An analytical decision model was developed to determine the cost-effectiveness of chemohormonal therapy versus androgen deprivation therapy alone in patients with metastatic hormone-sensitive prostate cancer and patients with non-metastatic high-risk prostate cancer. The cost-effectiveness in metastatic patients with a high-volume disease was assessed separately. The model used data from randomized clinical trials and drug acquisition costs in Brazil. In addition, the costs of post-progression therapies have been included in this model. The benefits to health are expressed as the quality-adjusted life-years, and the incremental cost-effectiveness ratios were calculated. Results Chemohormonal therapy may be associated with improved quality-adjusted life-years for all patient. The improvement was more than six times greater for patients with high-volume metastatic disease. In these patients, the incremental cost-effectiveness ratios were up to 74% lower than the incremental cost-effectiveness ratios of patients with non-metastatic disease. Conclusion Chemohormonal therapy has been more cost-effective in patients with high-volume metastatic disease.
DOI: 10.6084/m9.figshare.5666773.v1
title: Cost effectiveness of chemohormonal therapy in patients with metastatic hormone-sensitive and non-metastatic high-risk prostate cancer

description: ABSTRACT Objective To assess the cost-effectiveness of chemohormonal therapy in patients with metastatic hormone-sensitive and non-metastatic high-risk prostate cancer. Methods An analytical decision model was developed to determine the cost-effectiveness of chemohormonal therapy versus androgen deprivation therapy alone in patients with metastatic hormone-sensitive prostate cancer and patients with non-metastatic high-risk prostate cancer. The cost-effectiveness in metastatic patients with a high-volume disease was assessed separately. The model used data from randomized clinical trials and drug acquisition costs in Brazil. In addition, the costs of post-progression therapies have been included in this model. The benefits to health are expressed as the quality-adjusted life-years, and the incremental cost-effectiveness ratios were calculated. Results Chemohormonal therapy may be associated with improved quality-adjusted life-years for all patient. The improvement was more than six times greater for patients with high-volume metastatic disease. In these patients, the incremental cost-effectiveness ratios were up to 74% lower than the incremental cost-effectiveness ratios of patients with non-metastatic disease. Conclusion Chemohormonal therapy has been more cost-effective in patients with high-volume metastatic disease.
DOI: 10.6084/m9.figshare.5666770
title: Image formation in the geometrical optics by means of the Pierre Lucie's graphical method

description: In this work we recover and update a graphical method introduced by Prof. Pierre Lucie (1917 – 1985) in the study of image formation by thin lens. The method is associated by us with the modern technologies of information and communication through a PheT simulation that allows the visualization of image formation and the acquisition of the conjugated points. We also make use of the dynamical geometry software GeoGebra to analyze the data and obtain Gauss’ equation for conjugated points. A class-oriented procedure for the teaching of image formation by thin lens was prepared and applied at the high-school level. Results indicate that this updated graphical method may be potentially significant.
DOI: 10.6084/m9.figshare.5666767
title: Experimental proposal for the study of collision between rubber balls and flat surface

description: The study on the conservation of linear momentum and impulsive forces in introductory physics courses has an approach based on the collision of objects that behave as particles. In this work we search for a deepening in the subject, introducing experimental activities directed to laboratories of physics teaching in which it is considered the collision between a rubber ball and a rigid and flat surface. These experiments allow us to investigate collision characteristics, such as the impact time, the impulsive force, the contact area and the coefficient of restitution. The modeling, based on the Hertz's theory, includes the elastic properties of the ball. The experimental results are compared with theoretical values from the conventional treatment (excluding the deformation of the bodies) and the Hertz theory. Indications are also given about the elaboration of experiments aiming at improvements by teachers and students.
DOI: 10.6084/m9.figshare.5666758
title: Adaptation of a smart walker for stroke individuals: a study on sEMG and accelerometer signals

description: Abstract Introduction: Stroke is a leading cause of neuromuscular system damages, and researchers have been studying and developing robotic devices to assist affected people. Depending on the damage extension, the gait of these people can be impaired, making devices, such as smart walkers, useful for rehabilitation. The goal of this work is to analyze changes in muscle patterns on the paretic limb during free and walker-assisted gaits in stroke individuals, through accelerometry and surface electromyography (sEMG). Methods The analyzed muscles were vastus medialis, biceps femoris, tibialis anterior and gastrocnemius medialis. The volunteers walked three times on a straight path in free gait and, further, three times again, but now using the smart walker, to help them with the movements. Then, the data from gait pattern and muscle signals collected by sEMG and accelerometers were analyzed and statistical analyses were applied. Results The accelerometry allowed gait phase identification (stance and swing), and sEMG provided information about muscle pattern variations, which were detected in vastus medialis (onset and offset; p = 0.022) and biceps femoris (offset; p = 0.025). Additionally, comparisons between free and walker-assisted gaits showed significant reduction in speed (from 0.45 to 0.30 m/s; p = 0.021) and longer stance phase (from 54.75 to 60.34%; p = 0.008). Conclusions Variations in muscle patterns were detected in vastus medialis and biceps femoris during the experiments, besides user speed reduction and longer stance phase when the walker-assisted gait is compared with the free gait.
DOI: 10.6084/m9.figshare.5666758.v1
title: Adaptation of a smart walker for stroke individuals: a study on sEMG and accelerometer signals

description: Abstract Introduction: Stroke is a leading cause of neuromuscular system damages, and researchers have been studying and developing robotic devices to assist affected people. Depending on the damage extension, the gait of these people can be impaired, making devices, such as smart walkers, useful for rehabilitation. The goal of this work is to analyze changes in muscle patterns on the paretic limb during free and walker-assisted gaits in stroke individuals, through accelerometry and surface electromyography (sEMG). Methods The analyzed muscles were vastus medialis, biceps femoris, tibialis anterior and gastrocnemius medialis. The volunteers walked three times on a straight path in free gait and, further, three times again, but now using the smart walker, to help them with the movements. Then, the data from gait pattern and muscle signals collected by sEMG and accelerometers were analyzed and statistical analyses were applied. Results The accelerometry allowed gait phase identification (stance and swing), and sEMG provided information about muscle pattern variations, which were detected in vastus medialis (onset and offset; p = 0.022) and biceps femoris (offset; p = 0.025). Additionally, comparisons between free and walker-assisted gaits showed significant reduction in speed (from 0.45 to 0.30 m/s; p = 0.021) and longer stance phase (from 54.75 to 60.34%; p = 0.008). Conclusions Variations in muscle patterns were detected in vastus medialis and biceps femoris during the experiments, besides user speed reduction and longer stance phase when the walker-assisted gait is compared with the free gait.
DOI: 10.6084/m9.figshare.5666755
title: Aggregate stability and penetration resistance after mobilization of a dystrocohesive Ultisol

description: ABSTRACT Evaluation of mobilized soil profiles can provide important information on soil compaction reduction processes. In this context, the objective of this study was to evaluate alterations in soil penetration resistance and the impact on the aggregate stability of a cohesive Ultisol cultivated with sugarcane. The experiment was carried out at the Carpina Sugarcane Experimental Station (EECAC/UFRPE), located in the city of Carpina, PE. Penetration resistance, mobilized area and depth, and percentage of soil aggregates were evaluated before and after soil tillage. Soil mobilization improved soil aggregate uniformity and decreased penetration resistance in the 0-0.20 m layer. Coarse soil fraction, moisture and organic carbon positively contributed to the increase in soil mobilization.
DOI: 10.6084/m9.figshare.5666755.v1
title: Aggregate stability and penetration resistance after mobilization of a dystrocohesive Ultisol

description: ABSTRACT Evaluation of mobilized soil profiles can provide important information on soil compaction reduction processes. In this context, the objective of this study was to evaluate alterations in soil penetration resistance and the impact on the aggregate stability of a cohesive Ultisol cultivated with sugarcane. The experiment was carried out at the Carpina Sugarcane Experimental Station (EECAC/UFRPE), located in the city of Carpina, PE. Penetration resistance, mobilized area and depth, and percentage of soil aggregates were evaluated before and after soil tillage. Soil mobilization improved soil aggregate uniformity and decreased penetration resistance in the 0-0.20 m layer. Coarse soil fraction, moisture and organic carbon positively contributed to the increase in soil mobilization.
DOI: 10.6084/m9.figshare.5666749
title: Erosive rainfall in Rio do Peixe Valley in Santa Catarina, Brazil: Part I - Determination of the erosivity index

description: ABSTRACT This study aimed to determine the rainfall erosivity index in the Valley of Rio do Peixe, in the state of Santa Catarina, Brazil. The data series of three rain gauge stations in the cities of Campos Novos, Videira, and Caçador were used to determine the rainfall erosivity based on the EI30 index and to adjust the equations in order to estimate the EI30 value from the rainfall coefficient. On average, it was observed that erosive rains represents 81.4-88.5% of the annual precipitation. The adjusted equations can be used to estimate rainfall erosivity in locations with only rainfall data. The regional equation specified for the erosivity estimation is EI30 = 74.23 Rc0.8087. The R factor is 8,704.8; 7,340.8; and 6,387.1 MJ mm ha-1 h-1 year-1 for Campos Novos, Videira, and Caçador, respectively. In Campos Novos and Videira, the erosivity was classified as high, while in Caçador, it was classified as average.
DOI: 10.6084/m9.figshare.5666749.v1
title: Erosive rainfall in Rio do Peixe Valley in Santa Catarina, Brazil: Part I - Determination of the erosivity index

description: ABSTRACT This study aimed to determine the rainfall erosivity index in the Valley of Rio do Peixe, in the state of Santa Catarina, Brazil. The data series of three rain gauge stations in the cities of Campos Novos, Videira, and Caçador were used to determine the rainfall erosivity based on the EI30 index and to adjust the equations in order to estimate the EI30 value from the rainfall coefficient. On average, it was observed that erosive rains represents 81.4-88.5% of the annual precipitation. The adjusted equations can be used to estimate rainfall erosivity in locations with only rainfall data. The regional equation specified for the erosivity estimation is EI30 = 74.23 Rc0.8087. The R factor is 8,704.8; 7,340.8; and 6,387.1 MJ mm ha-1 h-1 year-1 for Campos Novos, Videira, and Caçador, respectively. In Campos Novos and Videira, the erosivity was classified as high, while in Caçador, it was classified as average.
DOI: 10.6084/m9.figshare.5666743
title: Effect of ovariectomy in bone structure of mandibular condyle

description: Abstract Purpose: To evaluate the bone structure of the mandibular condyle through an animal model, after ovariectomy. Methods: Thirty-six female Wistar rats were divided into 2 groups. The OVX group was submitted to bilateral ovariectomy, the SHAM group underwent the same surgical treatment, but without removal of the ovaries. After 90, 105 and 135 days after surgery, six animals from each group were submitted to euthanasia and the part containing the condyle was removed. Results: The microscopic analysis shows an increase in marrow spaces over time in the OVX group. The morphometric study shows reduction in the amount of bone tissue in the OVX group 135 days period in comparison with for the initial period (90 days) (p &lt;0.05, ANOVA, Tukey). Conclusion: The estrogen deficiency also affects the bone structure of the condyle.
DOI: 10.6084/m9.figshare.5666743.v1
title: Effect of ovariectomy in bone structure of mandibular condyle

description: Abstract Purpose: To evaluate the bone structure of the mandibular condyle through an animal model, after ovariectomy. Methods: Thirty-six female Wistar rats were divided into 2 groups. The OVX group was submitted to bilateral ovariectomy, the SHAM group underwent the same surgical treatment, but without removal of the ovaries. After 90, 105 and 135 days after surgery, six animals from each group were submitted to euthanasia and the part containing the condyle was removed. Results: The microscopic analysis shows an increase in marrow spaces over time in the OVX group. The morphometric study shows reduction in the amount of bone tissue in the OVX group 135 days period in comparison with for the initial period (90 days) (p &lt;0.05, ANOVA, Tukey). Conclusion: The estrogen deficiency also affects the bone structure of the condyle.
DOI: 10.6084/m9.figshare.5666740
title: Conceptions on pharmaceutical services in Brazilian primary health care

description: ABSTRACT OBJECTIVE To identify and discuss the conceptions of pharmaceutical services in Brazilian Primary Health Care, according to different subjects. METHODS This study is part of the Pesquisa Nacional sobre Acesso, Utilização e Promoção do Uso Racional de Medicamentos – Serviços, 2015 (PNAUM – National Survey on Access, Use and Promotion of Rational Use of Medicines – Services, 2015), which is composed of an information survey in a representative sample of cities, stratified according to Brazilian regions, and a subsample of primary health care services. Municipal secretaries of health, those responsible for pharmaceutical services, and those responsible for medicine delivery in pharmacies/dispensing units of the selected services were interviewed. The questionnaires included one question about the understanding of the interviewee regarding pharmaceutical services. The content analysis technique was used to apprehend, in the statements, the meanings attributed to pharmaceutical services, which were subsequently classified into categories according to their main conceptions. RESULTS Among the wide diversity of conceptions on pharmaceutical services (PS), we highlight the ones focused on 1) logistic control of medicines with activities concerning guidance or information on their use and 2) guidance or information to users on the use of medicine. The findings reveal a shifting tendency from a medicine-focused conception to one that considers the users and their needs as the final recipient of these actions. However, the lack of references to conceptions regarding care management and integrality point out the slowness of this change; after all, this is a social and historical process that comprises the production of meanings that transcend legal, logistic, and technical arrangements in pharmaceutical services. CONCLUSIONS The diversity of conceptions expresses the several meanings attributed to pharmaceutical services; we also identified, in their reorientation process, a movement that reflects a gradual shift in the technical paradigm, from the focus on medicine logistics to a user-oriented approach of health services.
DOI: 10.6084/m9.figshare.5666740.v1
title: Conceptions on pharmaceutical services in Brazilian primary health care

description: ABSTRACT OBJECTIVE To identify and discuss the conceptions of pharmaceutical services in Brazilian Primary Health Care, according to different subjects. METHODS This study is part of the Pesquisa Nacional sobre Acesso, Utilização e Promoção do Uso Racional de Medicamentos – Serviços, 2015 (PNAUM – National Survey on Access, Use and Promotion of Rational Use of Medicines – Services, 2015), which is composed of an information survey in a representative sample of cities, stratified according to Brazilian regions, and a subsample of primary health care services. Municipal secretaries of health, those responsible for pharmaceutical services, and those responsible for medicine delivery in pharmacies/dispensing units of the selected services were interviewed. The questionnaires included one question about the understanding of the interviewee regarding pharmaceutical services. The content analysis technique was used to apprehend, in the statements, the meanings attributed to pharmaceutical services, which were subsequently classified into categories according to their main conceptions. RESULTS Among the wide diversity of conceptions on pharmaceutical services (PS), we highlight the ones focused on 1) logistic control of medicines with activities concerning guidance or information on their use and 2) guidance or information to users on the use of medicine. The findings reveal a shifting tendency from a medicine-focused conception to one that considers the users and their needs as the final recipient of these actions. However, the lack of references to conceptions regarding care management and integrality point out the slowness of this change; after all, this is a social and historical process that comprises the production of meanings that transcend legal, logistic, and technical arrangements in pharmaceutical services. CONCLUSIONS The diversity of conceptions expresses the several meanings attributed to pharmaceutical services; we also identified, in their reorientation process, a movement that reflects a gradual shift in the technical paradigm, from the focus on medicine logistics to a user-oriented approach of health services.
DOI: 10.6084/m9.figshare.5666737
title: Fluid and dietary restriction’s efficacy on chronic kidney disease patients in hemodialysis

description: ABSTRACT Objective: to identify self-care measures to manage fluid and dietary restrictions and assess their effectiveness. Method: descriptive-correlational study and cluster analysis with 254 chronic renal failure patients on regular hemodialysis program, handled by hemodiafiltration. We evaluated the effectiveness of self-care by interdialytic weight gain (IWG) and by potassium and phosphorus serum pre-dialysis serum levels. Results: several self-care measures were significantly correlated with a lower IWG and a lower level of pre-dialysis phosphorus. Patients most often use measures to reduce salt consumption than measures to restrict potassium and dietary phosphorus. The spouse provides important support dietary management. Subjects who use more often the self-care measure are mostly female, are older, less IWG and have a higher Kt/V. Conclusion: these results can contribute to the nursing educational support.
DOI: 10.6084/m9.figshare.5666737.v1
title: Fluid and dietary restriction’s efficacy on chronic kidney disease patients in hemodialysis

description: ABSTRACT Objective: to identify self-care measures to manage fluid and dietary restrictions and assess their effectiveness. Method: descriptive-correlational study and cluster analysis with 254 chronic renal failure patients on regular hemodialysis program, handled by hemodiafiltration. We evaluated the effectiveness of self-care by interdialytic weight gain (IWG) and by potassium and phosphorus serum pre-dialysis serum levels. Results: several self-care measures were significantly correlated with a lower IWG and a lower level of pre-dialysis phosphorus. Patients most often use measures to reduce salt consumption than measures to restrict potassium and dietary phosphorus. The spouse provides important support dietary management. Subjects who use more often the self-care measure are mostly female, are older, less IWG and have a higher Kt/V. Conclusion: these results can contribute to the nursing educational support.
DOI: 10.6084/m9.figshare.5666734
title: Opioid analgesic administration in patients with suspected drug use

description: ABSTRACT Objective: To identify the prevalence of patients suspected of drug use according to the nursing professionals' judgement, and compare the behavior of these professionals in opioid administration when there is or there is no suspicion that patient is a drug user. Method: A cross-sectional study with 507 patients and 199 nursing professionals responsible for administering drugs to these patients. The Chi-Square test, Fisher's Exact and a significance level of 5% were used for the analyzes. Results: The prevalence of suspected patients was 6.7%. The prevalence ratio of administration of opioid analgesics 'if necessary' is twice higher among patients suspected of drug use compared to patients not suspected of drug use (p = 0.037). Conclusion: The prevalence of patients suspected of drug use was similar to that of studies performed in emergency departments. Patients suspected of drug use receive more opioids than patients not suspected of drug use.