Conjugate Points along lightlike geodesics of Lorentzian manifolds

En esta charla se muestran algunas propiedades que relacionan la distribución de los puntos conjugados en las geodésicas luz con propiedades globales tanto geométricas como topológicas de la variedad. Los resultados expuestos se aplican al estudio de las esferas de dimensión impar

A new approach to the study of lightlike manifolds

Proponemos un nuevo enfoque al estudio de las subvariedades luz, cuyo estudio hasta el momento dependía de una elección arbitraria de una distribución pantalla que hacía completamente inadecuado el estudio de la geometría intrínseca. Las técnicas utilizarán geometrías de Cartan.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Privacy-Preserving Reengineering of Model-View-Controller Application Architectures Using Linked Data

When a legacy system’s software architecture cannot be redesigned, implementing additional privacy requirements is often complex, unreliable and costly to maintain. This paper presents a privacy-by-design approach to reengineer web applications as linked data-enabled and implement access control and privacy preservation properties. The method is based on the knowledge of the application architecture, which for the Web of data is commonly designed on the basis of a model-view-controller pattern. Whereas wrapping techniques commonly used to link data of web applications duplicate the security source code, the new approach allows for the controlled disclosure of an application’s data, while preserving non-functional properties such as privacy preservation. The solution has been implemented and compared with existing linked data frameworks in terms of reliability, maintainability and complexity

La formación musical en el profesorado de Educación Infantil

This work focuses on research conducted in schools that give the second cycle of Infantile Education in capital Burgos, regarding the musical education. For it, we appear two aims: 1) to know what initial formation the teachers of the stage received as for musical education and 2) to design and to carry out formative actions that can be realized in agreement to the needs and lacks expressed by the polled group. The research has a design of predominantly descriptive character, bringing together the qualitative thing with the quantitative thing, being served especially the questionnaire as instrument of withdrawal of information. The obtained conclusions will allow to orientate future formative and methodological tasks so much in the initial as permanent formation of the professorship.El presente trabajo se centra en una investigación realizada en los centros escolares que imparten el segundo ciclo de Educación Infantil en Burgos capital, en lo que se refiere a la educación musical. Para ello, nos planteamos dos objetivos: 1) conocer qué formación inicial recibieron los maestros de la etapa en materia de educación musical y 2) diseñar y llevar a cabo acciones formativas que pueden realizarse de acuerdo a las necesidades y carencias expresadas por el colectivo encuestado. La investigación tiene un diseño de carácter predominantemente descriptivo, conjugando lo cualitativo con lo cuantitativo, sirviéndonos sobre todo del cuestionario como instrumento de recogida de información. Las conclusiones obtenidas permitirán orientar futuras tareas formativas y metodológicas tanto en la formación inicial como permanente del profesorado

El trabajo rítmico realizado a través de la música: Una herramienta para la rehabilitación de niños/niñas con dislalia funcional

En este trabajo se muestran los resultados obtenidos en dos variables: Adaptación a un ritmo externo y repetición de estructuras rítmicas, tras aplicar, como intervención indirecta, un programa de música específicamente diseñado para mejorar las bases funcionales del lenguaje oral, a un grupo experimental de sujetos con dislalia funcional. Dichos resultados se han extraído de una investigación más amplia, realizada según un diseño pre-test-rehabilitación-post-test, en la que durante cinco meses el grupo experimental recibió clases de música una vez por semana, además de la sesión de intervención directa con la logopeda. El grupo control no recibió clases de música y continuó con su tratamiento logopédico habitual. La investigación incidía en 7 variables de las que se han seleccionado las ya mencionadas por su relevancia en los problemas tratados. Los resultados sugieren que el trabajo rítmico realizado a través de la música ha contribuido a rehabilitar las dislalias funcionales que presentabanIn this work, it is shown the results obtained within two variables: Adaptation to an external rhythm and repetition of rhythmic structures, after implementing, as indirect intervention, a music programme specially designed to improve the functional basis of oral language, to an experimental group of subjects with functional difficulties of articulating the words. Those results have been extracted from a comprehensive research made according to a pre-test- rehabilitation- post-test design, in which for five months the experimental group received music lessons once a week, in addition to the direct intervention session with speech therapist. The control group doesn´t received music lessons and continued his usual speech therapy. The research touched on 7 variables; from those variables, we have selected the two mentioned above because they have a specific relevance on the dysfunctions treated. The results suggest that the rhythmic work through music has helped rehabilitate the difficulties presentin

Clumsiness and Motor Competence in Physical Education and Sport Pedagogy

One of the main objectives of physical education and sport (PES) pedagogy in schools is to develop motor competence in children. While many schoolchildren practice sports, there is a group of children that does not receive the educational opportunities to be competent. These children show low motor competence and poor motor coordination. International agencies have called this condition as developmental coordination disorders (DCD) and its definition in short is “poor motor performance in daily activities that is not consistent with the child’s age and intelligence, and is not due to medical condition.” Physical education and sport teachers are the first interventionist with these children. They have the first opportunity of providing primary care to these children. In this chapter, motor coordination problems in school, its prevalence, how these children learn, how physical education and sport teachers can detect them, and why physical education and sport pedagogy must be concerned with this problem, will be analyzed

Lorentzian Metrics Null-Projectively Related to Semi-Riemannian Metrics

We say that a Lorentzian metric and a semi-Riemannian metric on the same manifold M are null-projectively related if every null geodesic of the Lorentzian metric is an unparametrized geodesic of the semi-Riemannian one. This definition includes the case of conformally related Lorentzian metrics and the case of projectively equivalent metrics. We characterize the null-projectively relation by means of certain tensor and provide some examples. Then, we focus on the special case in which both metrics share parametrized null geodesics. In this case, it is said that they are null related. We show how to construct projectively equivalent metrics via a conformal transformation from null-related ones and conversely. The classical Levi-Civita theorem on projectively equivalent metrics is adapted to the case of null-related metrics and some results ensuring that two null-related metric are affinely equivalent are proven under curvature conditions.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. // Funding for open access charge: Universidad de Málaga / CBUA

Orientación Emprendedora e Innovación en Productos. El Efecto Moderador de la Implicación Familiar en la Gestión

In this current research it has been examined, firstly, the Entrepreneurial orientation in relation with Product innovation, Incremental innovation and Radical innovation, and, secondly, the moderating effect of Family involvement in the management of companies in the relationship between Entrepreneurial orientation and Product innovation, Incremental innovation and Radical innovation. Using a sample of 634 Spanish family firms, the results found conclude that the Entrepreneurial orientation has a positive effect on Product innovation, Incremental innovation and Radical innovation, and moreover, they reveal that the Family involvement in the management of companies has a moderating effect on these relations, witnessing that family firms with higher scale of Family involvement in the management of the companies reduces the effect of Entrepreneurial orientation on Product innovation, Incremental innovation and finally, Radical innovation. En el presente trabajo se ha analizado, en primer lugar, la relación entre la Orientación emprendedora y la Innovación en productos, Innovación incremental e Innovación radical, y en segundo lugar, el efecto moderador que tiene la Implicación familiar en la gestión de la empresa sobre la relación entre la Orientación emprendedora y la Innovación en productos, Innovación incremental e Innovación radical. Para tal análisis se ha utilizado una muestra de 634 empresas familiares españolas, y los resultados obtenidos han demostrado que la Orientación emprendedora tiene un efecto positivo sobre la Innovación en productos, Innovación incremental e Innovación radical, y además, también han demostrado que la Implicación familiar en la gestión de la empresa tiene un efecto moderador en dichas relaciones, de tal forma que las empresas familiares con mayor Implicación familiar en la gestión reducen el efecto de la Orientación emprendedora sobre la Innovación en productos, Innovación incremental e Innovación radical

La solvencia empresarial: pirámides de ratios vs. marco teórico

En esta Tesis se analizan los principales problemas de las pirámides de ratios, ilustrando su incapacidad para explicar las causas de desequilibrio financiero. Asimismo, se propone un marco teórico y se diseñan indicadores de solvencia a partir de éste, que son aplicados a cuatro casos de empresas diferentes con fines ilustrativos. Finalmente se exponen las conclusiones del trabajo

Assessment of Generic Skills through an Organizational Learning Process Model

This contribution has been published in this repository with the permission of the publisher. This contribution was presented in WEBIST 2018 (http://www.webist.org/?y=2018) and has been published by SCITEPRESS in http://www.scitepress.org/PublicationsDetail.aspx?ID=y9Yt0eHt02o=&.The performance in generic skills is increasingly important for organizations to succeed in the current competitive environment. However, assessing the level of performance in generic skills of the members of an organization is a challenging task, subject to both subjectivity and scalability issues. Organizations usually lay their organizational learning processes on a Knowledge Management System (KMS). This work presents a process model to support managers of KMSs in the assessment of their individuals’ generic skills. The process model was deployed through an extended version of a learning management system. It was connected with different information system tools specifically developed to enrich its features. A case study with Computer Science final-year students working in a software system was conducted following an authentic learning approach, showing promising results.Visaigle Project (grant TIN2017-85797-R)