cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6235544
title: Technological Knowledge of Correlation and Regression: an exploratory study with Prospective Teachers

description: Abstract We assessed the technological knowledge on correlation and regression in 25 students who are preparing to become secondary and high school education mathematics teachers in Spain. We relied on the theoretical model by Niess (2005) of teacher's knowledge to teach with technology. Using data from the United Nations server, the prospective teachers were requested to fit a regression model to the life expectancy according to various development indicators in 194 countries. They were also proposed to choose another dependent variable or to take new data from the United Nations to repeat the analysis. The results suggested a good statistical knowledge and a good statistical technological knowledge about correlation and regression in most participants. However, some of them showed difficulties in the ideas of independence and incorrelation, in the use of technology or made an uncritical use of it.
DOI: 10.6084/m9.figshare.6235544.v1
title: Technological Knowledge of Correlation and Regression: an exploratory study with Prospective Teachers

description: Abstract We assessed the technological knowledge on correlation and regression in 25 students who are preparing to become secondary and high school education mathematics teachers in Spain. We relied on the theoretical model by Niess (2005) of teacher's knowledge to teach with technology. Using data from the United Nations server, the prospective teachers were requested to fit a regression model to the life expectancy according to various development indicators in 194 countries. They were also proposed to choose another dependent variable or to take new data from the United Nations to repeat the analysis. The results suggested a good statistical knowledge and a good statistical technological knowledge about correlation and regression in most participants. However, some of them showed difficulties in the ideas of independence and incorrelation, in the use of technology or made an uncritical use of it.
DOI: 10.6084/m9.figshare.6235532
title: Patient safety and the value of pharmaceutical intervention in a cancer hospital

description: ABSTRACT Objective To demonstrate economic impact of pharmaceutical evaluation in detection and prevention of errors in antineoplastic prescriptions. Methods This was an observational and retrospective study performed in a cancer hospital. From July to August 2016 pharmacists checked prescriptions of antineoplastic and adjuvant drugs. Drug-related problems observed were classified and analyzed concerning drug, pharmaceutical intervention, acceptability and characteristic of the error. In case of problem related to dose, we calculated a deviation percentage related with correct dose and value spent or saved. Data were analyzed using descriptive statistics with frequency and percentage. Results A total of 6,104 prescriptions and 12,128 medications were evaluated. Drug-related problems were identified in 274 (4.5%) prescriptions. Most of them was due to lack of information (n=117; 36.1%). Problems associated with dose accounted for 32.1% (n=98) of the total. In 13 cases (13.3%) ranging of prescribed dose was 50% greater than the correct dose. Intercepted drug-related problems provided savings of R$54.081,01 and expenses of R$20.863,36, therefore resulting in a positive balance of R$33.217,65. Each intervention promoted saving of R$126,78 with an acceptance rate of 98%. Main pharmaceutical interventions were information inclusion (n=117; 36.1%) and dose change (n=97; 29.9%). All errors were classified as error with no harm. Conclusion Simple actions such as prescription checking are able to identify and prevent drug-related problems, avoid financial losses and add immeasurable value to patient safety.
DOI: 10.6084/m9.figshare.6235532.v1
title: Patient safety and the value of pharmaceutical intervention in a cancer hospital

description: ABSTRACT Objective To demonstrate economic impact of pharmaceutical evaluation in detection and prevention of errors in antineoplastic prescriptions. Methods This was an observational and retrospective study performed in a cancer hospital. From July to August 2016 pharmacists checked prescriptions of antineoplastic and adjuvant drugs. Drug-related problems observed were classified and analyzed concerning drug, pharmaceutical intervention, acceptability and characteristic of the error. In case of problem related to dose, we calculated a deviation percentage related with correct dose and value spent or saved. Data were analyzed using descriptive statistics with frequency and percentage. Results A total of 6,104 prescriptions and 12,128 medications were evaluated. Drug-related problems were identified in 274 (4.5%) prescriptions. Most of them was due to lack of information (n=117; 36.1%). Problems associated with dose accounted for 32.1% (n=98) of the total. In 13 cases (13.3%) ranging of prescribed dose was 50% greater than the correct dose. Intercepted drug-related problems provided savings of R$54.081,01 and expenses of R$20.863,36, therefore resulting in a positive balance of R$33.217,65. Each intervention promoted saving of R$126,78 with an acceptance rate of 98%. Main pharmaceutical interventions were information inclusion (n=117; 36.1%) and dose change (n=97; 29.9%). All errors were classified as error with no harm. Conclusion Simple actions such as prescription checking are able to identify and prevent drug-related problems, avoid financial losses and add immeasurable value to patient safety.
DOI: 10.6084/m9.figshare.6235529
title: Millimeter Wave Antenna for Intelligent Transportation Systems Application

description: Abstract A compact broadband millimeter wave antenna for intelligent transportation (ITS) application is proposed in this paper. This antenna uses coplanar wave guide feeding technique for broad bandwidth. The proposed antenna works at 79 GHz resonant frequency having a large bandwidth of 78.2 GHz. The measured gain of the antenna is 17.5 dBi. The proposed antenna is very suitable for short range radar (SRR) application and %G technologies.
DOI: 10.6084/m9.figshare.6235529.v1
title: Millimeter Wave Antenna for Intelligent Transportation Systems Application

description: Abstract A compact broadband millimeter wave antenna for intelligent transportation (ITS) application is proposed in this paper. This antenna uses coplanar wave guide feeding technique for broad bandwidth. The proposed antenna works at 79 GHz resonant frequency having a large bandwidth of 78.2 GHz. The measured gain of the antenna is 17.5 dBi. The proposed antenna is very suitable for short range radar (SRR) application and %G technologies.
DOI: 10.6084/m9.figshare.6235526
title: SOFA in the first 24 hours as an outcome predictor of acute liver failure

description: ABSTRACT Objective: To describe a cohort of patients with acute liver failure and to analyze the demographic and clinical factors associated with mortality. Methods: Retrospective cohort study in which all patients admitted for acute liver failure from July 28, 2012, to August 31, 2017, were included. Clinical and demographic data were collected using the Epimed System. The SAPS 3, SOFA, and MELD scores were measured. The odds ratios and 95% confidence intervals were estimated. Receiver operating characteristics curves were obtained for the prognostic scores, along with the Kaplan-Meier survival curve for the score best predicting mortality. Results: The majority of the 40 patients were female (77.5%), and the most frequent etiology was hepatitis B (n = 13). Only 35% of the patients underwent liver transplantation. The in-hospital mortality rate was 57.5% (95%CI: 41.5 - 73.5). Among the scores investigated, only SOFA remained associated with risk of death (OR = 1.37; 95%CI 1.11 - 1.69; p &lt; 0.001). After SOFA stratification into &lt; 12 and ≥ 12 points, survival was higher in patients with SOFA &lt;12 (log-rank p &lt; 0.001). Conclusion: SOFA score in the first 24 hours was the best predictor of fatal outcome.
DOI: 10.6084/m9.figshare.6235526.v1
title: SOFA in the first 24 hours as an outcome predictor of acute liver failure

description: ABSTRACT Objective: To describe a cohort of patients with acute liver failure and to analyze the demographic and clinical factors associated with mortality. Methods: Retrospective cohort study in which all patients admitted for acute liver failure from July 28, 2012, to August 31, 2017, were included. Clinical and demographic data were collected using the Epimed System. The SAPS 3, SOFA, and MELD scores were measured. The odds ratios and 95% confidence intervals were estimated. Receiver operating characteristics curves were obtained for the prognostic scores, along with the Kaplan-Meier survival curve for the score best predicting mortality. Results: The majority of the 40 patients were female (77.5%), and the most frequent etiology was hepatitis B (n = 13). Only 35% of the patients underwent liver transplantation. The in-hospital mortality rate was 57.5% (95%CI: 41.5 - 73.5). Among the scores investigated, only SOFA remained associated with risk of death (OR = 1.37; 95%CI 1.11 - 1.69; p &lt; 0.001). After SOFA stratification into &lt; 12 and ≥ 12 points, survival was higher in patients with SOFA &lt;12 (log-rank p &lt; 0.001). Conclusion: SOFA score in the first 24 hours was the best predictor of fatal outcome.
DOI: 10.6084/m9.figshare.6235523
title: Kinetics of Vacancy Doping in SrTiO3 Studied by in situ Electrical Resistivity

description: The kinetics of annealing to transform stoichiometric SrTiO3 insulator into a vacancy-doped semiconductor-superconductor was revisited by in situ electrical resistivity measurements. SrTiO3 single crystals were grown by Floating Zone Method. Using a homemade apparatus several electrical resistivity as a function of time were measured at different temperatures, which allows one to study the creation of vacancies during annealing under vacuum. The activation energy for the oxygen vacancies formation/charge doping in SrTiO3 was estimated as 1.4±0.3 eV using solid-state kinetics approach.
DOI: 10.6084/m9.figshare.6235523.v1
title: Kinetics of Vacancy Doping in SrTiO3 Studied by in situ Electrical Resistivity

description: The kinetics of annealing to transform stoichiometric SrTiO3 insulator into a vacancy-doped semiconductor-superconductor was revisited by in situ electrical resistivity measurements. SrTiO3 single crystals were grown by Floating Zone Method. Using a homemade apparatus several electrical resistivity as a function of time were measured at different temperatures, which allows one to study the creation of vacancies during annealing under vacuum. The activation energy for the oxygen vacancies formation/charge doping in SrTiO3 was estimated as 1.4±0.3 eV using solid-state kinetics approach.
DOI: 10.6084/m9.figshare.6235520
title: The maxillary lateral incisor in the rehabilitation of cleft lip and palate

description: Abstract Objective This study analyzed the maintenance of lateral incisors in the dental rehabilitation of individuals with cleft lip and palate. Material and Methods The study was conducted on a tertiary craniofacial center and comprised retrospective analysis of panoramic and periapical radiographs of Caucasoid individuals with non-syndromic complete unilateral cleft lip and palate, analyzing all radiographs available on the records of each individual, from the first to the last up to 12 years of age. Overall, 2,826 records were reviewed to achieve a sample of 1,000 individuals. Among these, 487 individuals presented the permanent lateral incisors on both cleft and non-cleft sides, which were included in this study. Results The results were evaluated in percentages and by descriptive statistics. The association between maintenance of the lateral incisor and timing of alveolar bone graft were analyzed by the t test. Among the 487 individuals, 265 had not completed treatment, 62 presented insufficient information, and 44 concluded the treatment elsewhere. Among the remaining 116 individuals, the lateral incisor was extracted from 88 (75.86%) of them on the cleft side (CS) and from 23 (19.83%) people on the non-cleft side (NCS). The age at accomplishment of alveolar bone graft was significantly associated with maintenance of the lateral incisor on the cleft side (p&lt;0.01). Most extractions were indicated because of the inadequate positioning on the CS and for midline correction on the NCS. Rehabilitation was primarily completed by orthodontic movement (53 individuals on the CS and 13 individuals on the NCS). Conclusion In conclusion, the lateral incisor on the cleft side was not maintained in most individuals. Positive relationship was observed between extraction of the lateral incisor and age at accomplishment of the alveolar bone graft, suggesting the need to anticipate the initial radiographic evaluation to enhance its maintenance and reduce the procedures required for rehabilitation.
DOI: 10.6084/m9.figshare.6235520.v1
title: The maxillary lateral incisor in the rehabilitation of cleft lip and palate

description: Abstract Objective This study analyzed the maintenance of lateral incisors in the dental rehabilitation of individuals with cleft lip and palate. Material and Methods The study was conducted on a tertiary craniofacial center and comprised retrospective analysis of panoramic and periapical radiographs of Caucasoid individuals with non-syndromic complete unilateral cleft lip and palate, analyzing all radiographs available on the records of each individual, from the first to the last up to 12 years of age. Overall, 2,826 records were reviewed to achieve a sample of 1,000 individuals. Among these, 487 individuals presented the permanent lateral incisors on both cleft and non-cleft sides, which were included in this study. Results The results were evaluated in percentages and by descriptive statistics. The association between maintenance of the lateral incisor and timing of alveolar bone graft were analyzed by the t test. Among the 487 individuals, 265 had not completed treatment, 62 presented insufficient information, and 44 concluded the treatment elsewhere. Among the remaining 116 individuals, the lateral incisor was extracted from 88 (75.86%) of them on the cleft side (CS) and from 23 (19.83%) people on the non-cleft side (NCS). The age at accomplishment of alveolar bone graft was significantly associated with maintenance of the lateral incisor on the cleft side (p&lt;0.01). Most extractions were indicated because of the inadequate positioning on the CS and for midline correction on the NCS. Rehabilitation was primarily completed by orthodontic movement (53 individuals on the CS and 13 individuals on the NCS). Conclusion In conclusion, the lateral incisor on the cleft side was not maintained in most individuals. Positive relationship was observed between extraction of the lateral incisor and age at accomplishment of the alveolar bone graft, suggesting the need to anticipate the initial radiographic evaluation to enhance its maintenance and reduce the procedures required for rehabilitation.
DOI: 10.6084/m9.figshare.6235514
title: Problem Solving in Financial Mathematics for the Treatment of Financial Education Matters in High School

description: Abstract In this article, which originated from a Master's Dissertation, we present the results of a research, which objective was financial education, approached with activities that focused on concepts and calculations of financial mathematics, with questions immersed in socioeconomic values. We adopted the methodology of problem solving by Polya (2006), Dante (2009) among others, which allowed us not only to work with models of financial mathematics but to experience economic, social, and political issues in school. We use the parameters of the financial mathematics of Puccini (2007). We refer to several academics, members of the research group in Financial Mathematics as support for financial education and decision making, from Universidade Federal de Juiz de Fora (UFJF), which is coordinated by Dr. Marco Aurélio Kistemann Junior. The explored contents of mathematics were functions and progressions, with an interdisciplinary approach. The subjects were high school students in basic education. Five activities were built with problems, approaching concepts, and financial calculations, from subjects such as savings and financing. Here, we present the analysis of two questions from activities one and two. Through the analysis of errors, a continuous improvement of the student's reflexive posture was evidenced, not only in the resolution of the financial problems by the calculations made, but also in the interpretation of the propositions under study. The results, resolutions, and interpretations obtained, confirmed the efficiency of the methodology used.
DOI: 10.6084/m9.figshare.6235514.v1
title: Problem Solving in Financial Mathematics for the Treatment of Financial Education Matters in High School

description: Abstract In this article, which originated from a Master's Dissertation, we present the results of a research, which objective was financial education, approached with activities that focused on concepts and calculations of financial mathematics, with questions immersed in socioeconomic values. We adopted the methodology of problem solving by Polya (2006), Dante (2009) among others, which allowed us not only to work with models of financial mathematics but to experience economic, social, and political issues in school. We use the parameters of the financial mathematics of Puccini (2007). We refer to several academics, members of the research group in Financial Mathematics as support for financial education and decision making, from Universidade Federal de Juiz de Fora (UFJF), which is coordinated by Dr. Marco Aurélio Kistemann Junior. The explored contents of mathematics were functions and progressions, with an interdisciplinary approach. The subjects were high school students in basic education. Five activities were built with problems, approaching concepts, and financial calculations, from subjects such as savings and financing. Here, we present the analysis of two questions from activities one and two. Through the analysis of errors, a continuous improvement of the student's reflexive posture was evidenced, not only in the resolution of the financial problems by the calculations made, but also in the interpretation of the propositions under study. The results, resolutions, and interpretations obtained, confirmed the efficiency of the methodology used.
DOI: 10.6084/m9.figshare.6235511
title: Sanitisation of sewage sludge in a solar heated reactor: inactivation of total coliforms and Escherichia coli

description: ABSTRACT The application of sewage sludge in agriculture has become a common practice in many countries, which is attractive in many aspects, especially for the input of organic matter and nutrients in the soil. Despite the benefits of sludge use in agriculture and for the environment , this practice needs to be conducted considering safety aspects regarding sanitary conditions. In this context, the aim of this study was to evaluate the efficiency of a thermal disinfection process of sewage sludge using solar energy. The sludge was heated through a heat exchanger built with copper pipes and installed inside the reactor, in which water heated in flat plate solar collectors circulates. Sixteen experimental tests were performed under different solar irradiation conditions. The thermal inactivation of Escherichia coli in the reactor was evaluated using the first order kinetic model in non-isothermal conditions. The process proved effective in those tests with an average solar irradiation period above 500 W.h.m-2, and the reduction of E. coli was between 4.2 and 7.1 units log10; and between 4.8 and 7.4 units log10 of total coliforms. When tests were conducted in days with lower levels of solar irradiation, the efficiency of sanitisation was compromised, due to the low temperatures reached by the sludge.
DOI: 10.6084/m9.figshare.6235511.v1
title: Sanitisation of sewage sludge in a solar heated reactor: inactivation of total coliforms and Escherichia coli

description: ABSTRACT The application of sewage sludge in agriculture has become a common practice in many countries, which is attractive in many aspects, especially for the input of organic matter and nutrients in the soil. Despite the benefits of sludge use in agriculture and for the environment , this practice needs to be conducted considering safety aspects regarding sanitary conditions. In this context, the aim of this study was to evaluate the efficiency of a thermal disinfection process of sewage sludge using solar energy. The sludge was heated through a heat exchanger built with copper pipes and installed inside the reactor, in which water heated in flat plate solar collectors circulates. Sixteen experimental tests were performed under different solar irradiation conditions. The thermal inactivation of Escherichia coli in the reactor was evaluated using the first order kinetic model in non-isothermal conditions. The process proved effective in those tests with an average solar irradiation period above 500 W.h.m-2, and the reduction of E. coli was between 4.2 and 7.1 units log10; and between 4.8 and 7.4 units log10 of total coliforms. When tests were conducted in days with lower levels of solar irradiation, the efficiency of sanitisation was compromised, due to the low temperatures reached by the sludge.
DOI: 10.6084/m9.figshare.6235502
title: Use of the robust design methodology for identification of factors that contribute to the intensity of the “orange peel” aspect on painted bumper surfaces

description: Abstract Even with the considerable development of techniques for automotive paint in recent decades, the bumper is a car part that still has many problems related to the aspect of its painted surface. This study aimed to identify the clear coat application factors that affect on the intensity of orange peel appearance on painted bumpers surfaces and offer an optimum design of factors through the robust design methodology. In this research conducted in automated paint sector of a bumper company, the robust design helped in the identification of variability cause in a production process by applying an experiment and statistical techniques, in an agile and with little waste material way. The experiment tested various combinations of levels of the clear coat application factors (speed, flow, revolution per minute, operation voltage, atomizing air pressure) in the bumper samples. The intensity of the orange peel on coated surfaces samples was measured by a Wave Scan device that provides the wavelength reading as a function of two measures: Long Wave and Short Wave. The main results obtained by variance analysis of noise signal ratio showed that the factors that have significant effects on the value of the Short Wave response wavelength are: revolution per minute, operation voltage and the interactions flow*operation voltage and speed*operation voltage. The factors that significantly affected the response value of the Long Wave wavelength are: flow, atomizing air pressure, revolution per minute, operation voltage and the interaction speed*operation voltage. As a result of analysis of the noise signal mean, it is presented the factors optimum design: speed = 920 m / s; flow = 160 ml/min; atomizing air pressure = 180 bar; revolution per minute = 90 revolutions / minute; operation voltage = 180 kilovolts.