La construcción autobiográfica y narrativa de la experiencia docente

Se presentan los resultados de una investigación cuyo objeto de estudio fue el proceso creativo mediante el cual un grupo de profesores-investigadores dieron forma, otorgaron significado y dotaron de sentido su experiencia docente al narrarla de manera autobiográfica. Desde un enfoque autobiográfico-narrativo se estudiaron las formas del relato y la manera en que están organizadas las historias, para lo cual se propusieron tres dimensiones: la configuración narrativa del relato, la configuración autobiográfica de la experiencia y la configuración de una intencionalidad narrativa. Los objetivos de la investigación fueron: comprender el proceso grupal y colaborativo de la construcción autobiográfica y narrativa de la experiencia docente, caracterizar el estilo o estructura narrativa e identificar el entramado de razones o intenciones que contextúa y posibilita dicha construcción. Mediante una estrategia metodológica denominada laboratorio de biografización (entendido como un dispositivo que pone en relación la teoría, los sujetos y los relatos a través de un proceso dialógico de lectura/escucha del relato de otros y de escritura del relato propio) y estrategias de análisis cercanas a la interpretación directa, al análisis hermenéutico y al procesado intuitivo (un enfoque progresivo para la generación de temas, una estrategia para transformar la información y el método analítico particular denominado análisis estructural del relato), se obtuvieron los resultados de la investigación, de los cuales aquí sólo se presentan los que se refieren a las estructuras narrativas que ahí se generaron

Oralidad y escritura en la narrativa autobiográfica

Con base en su experiencia de investigación desde las perspectivas (auto)biográfica y narrativa los autores presentan un análisis comparativo entre el relato oral y el relato escrito como corpus susceptibles de ser investigados. Parten de la premisa de que la producción de los relatos orales y escritos se puede convertir en un espacio discursivo en el que se generan análisis e interpretaciones por parte de los propios sujetos investigados. Desde esta posición, se abordan aspectos relacionados con la diferenciación, los usos, las posibilidades, las limitaciones y los desafíos de la oralidad y de la escritura a través del relato autobiográfico. Se dilucidan temas como la temporalidad y la posición del investigador en la elaboración de los relatos, así como las condiciones en que se obtienen, bien sea a petición expresa o con cierta espontaneidad, de manera individual o en un colectivo a través del trabajo grupal y cooperativo y, bajo dichas premisas, lo que unos relatos aportan a otros. Se analiza también la problemática de su producción –oral o escrita– en función de los contextos y de la experiencia, formación y costumbres de los sujetos narradores y del propio investigador. Otros aspectos que se desarrollan son: la cuestión de la estrategia, los sujetos investigados y el propio investigador; la interactividad en la que se ha generado el producto, bien sea en diálogo con el investigador u otros participantes o simplemente con su presencia física; el contenido del relato según las condiciones en que se genera y a quién va dirigido; y, por último, la pertinencia y posibilidades de uso de la oralidad y de la escritura de los relatos autobiográficos según los temas de investigación y el objeto de estudio

Relationship between suicidal thinking, anxiety, depression and stress in university students who are victims of cyberbullying

The objective of this study is to analyze the predictive capacity of cybervictimization with regards to suicidal thinking and anxiety, depression and stress in university students. The European Cyberbullying Intervention Project Questionnaire, the Depression Anxiety Stress Scale-21 and the Suicidality Scale were administered to a sample of 1282 university students (594 men and 688 women) aged between 18 and 46 (M = 21.65; SD = 4.25). The results suggest that being a cybervictim increases the probability of suicidal thinking and presenting high levels of anxiety, depression and stress. This study highlights the high prevalence rates of cyberbullying in the university environment and how this issue is associated with emotional problems and suicidal thinking. The identification of these relationships may allow for the development of effective preventive intervention measures to respond to this problem

Cyberbullying in the University Setting. Relationship With Emotional Problems and Adaptation to the University

Little scientific attention has been paid to the problem of cyberbullying in the university environment, compared to similar studies conducted on adolescents. This study attempts to analyze the predictive capacity of certain emotional problems (anxiety, depression, and stress) and university adaptation with respect to cyberbullying in victims and aggressors. The European Cyberbullying Intervention Project Questionnaire, the Depression Anxiety Stress Scale-21 and the Student Adaptation to College Questionnaire were administered to a sample of 1282 university students (46.33% male) aged between 18 and 46. The results suggest that high levels of depression and stress increase the probability of being a cyberbullying victim, while high levels of depression increase the probability of being a cyberbullying aggressor. Similarly, the personal–emotional and social adaptation of students are found to be predictor variables of being a cyberbullying victim, in that high levels of personal–emotional and social adaptation decrease the probability of being a victim, while high levels of personal–emotional, academic and institutional adaptation decrease the probability of being a cyberbullying victim. The results of this study are of special relevance, since they indicate that intervention programs should consider the influence of emotional intelligence, as well as the relevance students’ adaptation to university

Cyberbullying in the university setting. Relationship with family environment and emotional intelligence

Currently, the enormous quantity of research on cyberbullying during adolescence contrasts with those studies carried out in the university environment. The objective of this study was to analyze the predictive capacity of family environment and emotional intelligence with regard to cyberbullying in university students. The European Cyberbullying Intervention Project Questionnaire, the Social Climate in the Family Scale and the Trait Meta-Mood Scale-24 were administered to a sample of 1282 university students (594 men and 688 women) between the ages of 18 and 46 (M = 21.65; DT = 4.25). The results revealed that a deteriorated family environment increases the probability of being both a victim and an aggressor of cyberbullying, whereas a favorable family environment decreases this probability. Likewise, the dimensions of emotional intelligence were predictive variables of participation as victims or aggressors of cyberbullying. The conclusions of this study are of special relevance given that they do not only bring about a problem that has a little knowledge of the university setting, but because they also note that intervention programs should consider the influence of the family environment during the early adulthood period, as well as the relevance of emotional level of these university students

Automatic system for quality-based classification of marble textures

In this paper, we present an automatic system and algorithms for the classification of marble slabs into different groups in real time in production line, according to slabs quality. The application of the system is aimed at the marble industry, in order to automate and improve the manual classification process of marble slabs carried out at present. The system consists of a mechatronic prototype, which houses all the required physical components for the acquisition of marble slabs images in suitable light conditions, and computational algorithms, which are used to analyze the color texture of the marble surfaces and classify them into their corresponding group. In order to evaluate the color representation influence on the image analysis, four color spaces have been tested: RGB, XYZ, YIQ, and K-L. After the texture analysis performed with the sum and difference histograms algorithm, a feature extraction process has been implemented with principal component analysis. Finally, a multilayer perceptron neural network trained with the backpropagation algorithm with adaptive learning rate is used to classify the marble slabs in three categories, according to their quality. The results (successful classification rate of 98.9%) show very high performance compared with the traditional (manual) system

Genetic Structure of the Ca Rater Mallorquí Dog Breed Inferred by Microsatellite Markers

Ca Rater Mallorquí is a dog breed from the Island of Mallorca (Spain) traditionally used as a hunting and ratting dog to prevent disease spread and economic losses related to rodent activities on farms. However, the census data shows a population decline that should be addressed by implementing a conservation program. The first step to implementing a conservation plan is knowing the genetic situation of the Ca Rater Mallorquí population. Therefore, we aimed to genetically characterise the breed in our study. We analysed 33 microsatellites recommended by the International Society of Animal Genetics (ISAG) in 77 samples. Data were obtained from 13 samples of Balearic, Spanish, and international dog breeds to study the genetic diversity among breeds. The population did not significantly deviate from the Hardy–Weinberg equilibrium with heterozygosity (Ho) of 0.655 and expected heterozygosity (He) of 0.685. The Wright’s fixation indices, the Factorial Correspondence Analysis (FCA), a dendrogram representing Reynolds genetic distance between populations, and the pairwise FST values establish the Ca Rater Mallorquí as an independent breed distinct from the Balearic, Spanish, and international breeds

Bidiagonal decompositions of Vandermonde-type matrices of arbitrary rank

We present a method to derive new explicit expressions for bidiagonal decompositions of Vandermonde and related matrices such as the (q-, h-) Bernstein-Vandermonde ones, among others. These results generalize the existing expressions for nonsingular matrices to matrices of arbitrary rank. For totally nonnegative matrices of the above classes, the new decompositions can be computed efficiently and to high relative accuracy componentwise in floating point arithmetic. In turn, matrix computations (e.g., eigenvalue computation) can also be performed efficiently and to high relative accuracy

El proyecto de las Nuevas Poblaciones de Sierra Morena en el mapa de 1768

El uso de los Sistemas de Información Geográfica (SIG) nos están aportando nuevas perspectivas en el estudio de la cartografía histórica relacionada con las Nuevas Poblaciones de Sierra Morena y Andalucía. En el caso que nos ocupa, hemos analizado el Mapa de una parte de Sierra Morena que comprehende el proyecto de las nuevas poblaciones de 1768, uno de los primeros planos que se realizaron sobre dicho proyecto, aplicándole los SIG en combinación con las fuentes escritas contemporáneas y el uso de los colores. De esta manera, hemos conseguido conocer el grado de fiabilidad de los ingenieros militares que lo realizaron analizando las vías de comunicación, jurisdicciones, red hidrográfica, toponimia o el poblamiento; y aclarar la progresión de los trabajos en las Nuevas Poblaciones de Sierra Morena durante la primera mitad de 1768