The aim of this work was the behavior analysis when a spell checker was integrated as an extra pre-process during the first stage of the test mining. Different models were analyzed, choosing the most complete one considering the pre-processes as the initial part of the text mining process. Algorithms for the Spanish language were developed and adapted, as well as for the methodology testing through the analysis of 2363 words. A capable notation for removing special and unwanted characters was created. Execution times of each algorithm were analyzed to test the efficiency of the text mining pre-process with and without orthographic revision. The total time was shorter with the spellchecker than without it. The key difference of this work among the existing related studies is the first time that the spell checker is used in the text mining preprocesses.

The iris is used as a reference for the study of unique biometric marks in people. The analysis of how to extract the iris characteristic information represents a fundamental challenge in image analysis, due to the implications it presents: detection of relevant information, data coding schemes, etc. For this reason, in the search for extraction of useful and characteristic information, approximations have been proposed for its analysis. In this article, it is presented a scheme to extract the relevant information based on the Hough transform. This transform helps to find primitive geometries in the irises, which are used to characterize each one of these. The results of the implementation of the algorithm of the Hough transform applied to the location and segmentation of the iris by means of its circumference are presented in the paper. Two public databases of iris images were used: UBIRIS V2 and CASIA-IrisV4, which were acquired under the same conditions and controlled environments. In the pre-processing stage the edges are found from the noise elimination in the image through the Canny detector. Subsequently, to the images of the detected edges, the Hough transform is applied to the disposition of the geometries detected.

No abstract

Con relación a la formación de los comunicadores, se parte de la convicción de que es necesario fortalecer sus competencias de producción mediática desde experiencias que les permitan comprender el proceso integral de producción desde una comunicación responsable, crítica y democrática. La metodología del estudio es exploratoria y cuantitativa, con la aplicación de una encuesta a estudiantes de Comunicación y Periodismo de la Universidad de Colima se buscó conocer sus percepciones sobre el nivel de competencias para desarrollar productos mediáticos desde la comunicación para el desarrollo. Los resultados reflejan que en la mayoría de los ítems sobre producción mediática y gestión de proyectos los encuestados no se consideran capaces de realizar la acción de forma autónoma. La información obtenida permite ofrecer una propuesta didáctica que fortalezca competencias vinculadas a la producción mediática como las habilidades digitales, de gestión de proyectos y responsabilidad social.

El objetivo de esta investigación es proponer un modelo que permita el cambio entre modalidades de aprendizaje a través del modelo u-learning y de rotación donde los profesores obtengan las competencias digitales y pedagógicas para desarrollar en sus estudiantes un aprendizaje significativo sin importar el entorno en donde se encuentren; esto a causa de las prácticas que se han tenido que modificar debido a la pandemia por COVID- 19, la investigación se aplico en la Facultad de Informática de la Universidad Autonoma de Querétaro.