Digital transformation : construct definition challenges and scenarios for a research agenda

Indeed, digital transformation is just like the new models of the various technological devices (smartphones, tablets, smart watches) that are used without us fully mastering their resources. It is happening in an accelerated way without even having a clear understanding of the phenomenon. It is typically a situation in which reality occurs at a speed greater than its understanding, thus claiming the researchers' positioning in the face of digital contemporaneity. Just like Uber, that initially imposed itself as a “de facto” reality (in practice) before becoming a de jure standard (supported by law), the research agenda digital transformation seeks to guide the future of research in the field, but, due to the speed of changes, it may fit into the metaphor of the lantern on the ship's stern, helping to illuminate the past. Even though the organizational practice is more agile than the academy, it is still worth emphasizing the fundamental role of research in interpreting the nuances of the phenomenon through the most diverse perspectives..info:eu-repo/semantics/publishedVersio

Preservice Elementary Science Teachers' Argumentation Competence: Impact of a Training Programme

The recent literature has shown the importance of Preservice Elementary Science Teachers (PESTs) having a deep understanding of argumentation, as this factor may affect the nature of the class activities that are taught and what students learn. A lack of understanding of this factor may represent an obstacle in the development of science education programmes in line with the development of scientific competences. This paper presents the results of the design and implementation of a training programme of 6 sessions (12 hours of class participation plus 8 hours of personal homework) on argumentation. The programme was carried out by 57 Spanish PESTs from Malaga, Spain. The training programme incorporates the innovative use of certain strategies to improve competence in argumentation, such as teaching PESTs to identify the elements of arguments in order to design assessment rubrics or by including peer assessment during evaluation with and without rubrics. The results obtained on implementing the training programme were evaluated based on the development of PESTs’ argumentation competence using Toulmin’s argumentative model. Data collection methods involved two tasks carried out at the beginning and the end of the programme, i.e., pre-test and post-test, respectively. The conclusion of the study is that students made significant progress in their argumentation competence on completing the course. In addition, PESTs who followed the training programme achieved statistically better results at the end than those in the control group (n = 41), who followed a traditional teaching programme. A 6-month transfer task showed a slight improvement for the PESTs of the experimental group in relation to the control group in their ability to transfer argumentation to practice, especially to the extent to which they mentioned argumentation in their practice portfolios.This work is part of the “I+D Excelencia” project “Development and evaluation of scientific competences through context based and modelling teaching approaches” case studies (EDU2013-41952-P), funded by the Spanish Ministry of Economy and Finance through its 2013 research call

Preparación y evaluación de un antígeno para descartar respuesta postvacunal a Brucella abortus cepa 19

Se preparó un antígeno por extracción acuosalina en caliente y posterior precipitación por etanol, a partir de Brucella abortus 1119–3, el que se enfrentó por pruebas de inmunodifusión doble con sueros de bovinos infectados y negativos a brucelosis, y sueros de bovinos vacunados con Cepa 19. Se comprueba que la sensibilidad y especificidad de la prueba es de 86,4 y 100%, respectivamente, y que la reacción no se produce frente a los sueros de bovinos vacunados.Los resultados son concordantes con aquellos de las pruebas de seroaglutinación estándar, rosa de bengala y fijación del complemento, cuando se refieren a los sueros de animales infectados y negativos a brucelosis, pero no a los sueros de bovinos vacunados. Se concluye que este antígeno, de fácil preparación y bajo costo, podría ser implementado para diferenciar respuestas serológicas que tengan origen postvacunal, de aquellas debidas a infección natural de brucelosis.Palabras claves: Brucella abortus cepa 19, brucelosis, bovinos, vacunas, antígenos.AbstractA heat–aqueous–saline extracted and ethilic precipitated antigen from Brucella abortus strain 1119–3 was prepared and tested by Immunodiffusion technique against sera from S19 vaccinated animals, fleld infected and negative cattle.It was confirmed that the precipitation reaction occur when infected bovinos where tested, but not when vaccinated do it. The, sensibility of this test was 86.4% and the specificity was 100%. Immunodiffusion test results were similar to standard seroaglutination, bengal rose and complement fixation tests with sera from field infected and negative cattle. It is concluded that immunodifusion test is a commendable test for the detection and diferenciation of infected and vaccinated cattle, due to its low cost and easy performance.Key words: Brucella abortus, Strain 19, brucelosis, cattle, vaccines, antigens

Preparación y evaluación de un antígeno para descartar respuesta postvacunal a Brucella abortus cepa 19

Se preparó un antígeno por extracción acuosalina en caliente y posterior precipitación por etanol, a partir de Brucella abortus 1119–3, el que se enfrentó por pruebas de inmunodifusión doble con sueros de bovinos infectados y negativos a brucelosis, y sueros de bovinos vacunados con Cepa 19. Se comprueba que la sensibilidad y especificidad de la prueba es de 86,4 y 100%, respectivamente, y que la reacción no se produce frente a los sueros de bovinos vacunados.Los resultados son concordantes con aquellos de las pruebas de seroaglutinación estándar, rosa de bengala y fijación del complemento, cuando se refieren a los sueros de animales infectados y negativos a brucelosis, pero no a los sueros de bovinos vacunados. Se concluye que este antígeno, de fácil preparación y bajo costo, podría ser implementado para diferenciar respuestas serológicas que tengan origen postvacunal, de aquellas debidas a infección natural de brucelosis.Palabras claves: Brucella abortus cepa 19, brucelosis, bovinos, vacunas, antígenos.AbstractA heat–aqueous–saline extracted and ethilic precipitated antigen from Brucella abortus strain 1119–3 was prepared and tested by Immunodiffusion technique against sera from S19 vaccinated animals, fleld infected and negative cattle.It was confirmed that the precipitation reaction occur when infected bovinos where tested, but not when vaccinated do it. The, sensibility of this test was 86.4% and the specificity was 100%. Immunodiffusion test results were similar to standard seroaglutination, bengal rose and complement fixation tests with sera from field infected and negative cattle. It is concluded that immunodifusion test is a commendable test for the detection and diferenciation of infected and vaccinated cattle, due to its low cost and easy performance.Key words: Brucella abortus, Strain 19, brucelosis, cattle, vaccines, antigens

Antigen for discard brucella abortus s 19 post-vaccinal response: preparation and evaluation

Se preparó un antígeno por extracción acuosalina en caliente y posterior precipitación por etanol, a partir de Brucella abortus 1119–3, el que se enfrentó por pruebas de inmunodifusión doble con sueros de bovinos infectados y negativos a brucelosis, y sueros de bovinos vacunados con Cepa 19. Se comprueba que la sensibilidad y especificidad de la prueba es de 86,4 y 100%, respectivamente, y que la reacción no se produce frente a los sueros de bovinos vacunados. Los resultados son concordantes con aquellos de las pruebas de seroaglutinación estándar, rosa de bengala y fijación del complemento, cuando se refieren a los sueros de animales infectados y negativos a brucelosis, pero no a los sueros de bovinos vacunados. Se concluye que este antígeno, de fácil preparación y bajo costo, podría ser implementado para diferenciar respuestas serológicas que tengan origen postvacunal, de aquellas debidas a infección natural de brucelosis