La conquista musulmana del Magreb y al-Andalus según las crónicas mozárabes

En un principio se sistematizan los datos conocidos sobre las “Crónicas mozárabes” –latinas y árabes–, buscando presentarlas en el contexto cultural en que se generaron. El objetivo central del trabajo es analizar y comentar los breves fragmentos con los cuales las citadas crónicas aluden a estas conquistas. Además de un relato con tintes negros, los cronistas mozárabes dejaron otros datos de interés sobre la ocupación musulmana del Magreb y de al-Andalus que se han pasado por alto: tanto la clara descripción de los mecanismos de conquista (mediante pactos), como la posterior imposición de impuestos (con lo que ello implica en una sociedad islámica). Se describe la importancia esencial de estas dos circunstancias para acabar destacando la postura positiva hacia el islam del autor de la Crónica Byzantina-Arabica, negativa en autores posteriores. Esto supone una valiosa confirmación textual de los mecanismos de la conquista, escrita menos de un siglo después de haberse producido.

Quantitative stability of linear infinite inequality systems under block perturbations with applications to convex systems

The original motivation for this paper was to provide an efficient quantitative analysis of convex infinite (or semi-infinite) inequality systems whose decision variables run over general infinite-dimensional (resp. finite-dimensional) Banach spaces and that are indexed by an arbitrary fixed set J. Parameter perturbations on the right-hand side of the inequalities are required to be merely bounded, and thus the natural parameter space is l ∞(J). Our basic strategy consists of linearizing the parameterized convex system via splitting convex inequalities into linear ones by using the Fenchel–Legendre conjugate. This approach yields that arbitrary bounded right-hand side perturbations of the convex system turn on constant-by-blocks perturbations in the linearized system. Based on advanced variational analysis, we derive a precise formula for computing the exact Lipschitzian bound of the feasible solution map of block-perturbed linear systems, which involves only the system’s data, and then show that this exact bound agrees with the coderivative norm of the aforementioned mapping. In this way we extend to the convex setting the results of Cánovas et al. (SIAM J. Optim. 20, 1504–1526, 2009) developed for arbitrary perturbations with no block structure in the linear framework under the boundedness assumption on the system’s coefficients. The latter boundedness assumption is removed in this paper when the decision space is reflexive. The last section provides the aimed application to the convex case.

Durability and compressive strength of blast furnace slag-based cement grout for special geotechnical applications

Special foundations, most prominently micropiles and soil anchors, are frequently used in construction today. In Spain, the grout for these special technical applications is generally prepared with portland cement, although the codes and standards in place stipulate only the minimum compressive strength required, with no mention of cement type. Those texts also establish a range of acceptable water:cement ratios. In the present study, durability and compressive strength in cement grout prepared with blast furnace slag cement at different w/c ratios are characterised and compared to the findings for a reference portland cement grout. The results show that slag grout exhibits greater durability than the portland cement material and complies with the compressive strength requirements laid down in the respective codes.

Conocimiento de matemáticas especializado de los estudiantes para maestro de primaria en relación al razonamiento proporcional

Un dominio particular del conocimiento matemático para la enseñanza es el conocimiento de matemáticas especializado. Este estudio se centra en examinar el conocimiento de matemáticas especializado en el ámbito del razonamiento proporcional de un grupo de estudiantes para maestro de Educación Primaria. Los resultados muestran que los estudiantes para maestro tienen un conocimiento especializado sobre el razonamiento proporcional limitado puesto de manifiesto por la dificultad en identificar situaciones no proporcionales, en desarrollar formas de razonar en relación a la construcción de la unidad y en manejar el significado multiplicativo de la idea de operador.

Spanish Nursing Students' Practical Experience of Computer Applications in Nursing

This study aimed to determine the level of computer practical experience in a sample of Spanish nursing students. Each student was given a Spanish language questionnaire, modified from an original used previously with medical students at the Medical School of North Carolina University (USA) and also at the Education Unit of Hospital General Universitario del Mar (Spain). The 10-item self-report questionnaire probed for information about practical experience with computers. A total of 126 students made up the sample. The majority were female (80.2%; n=101). The results showed that just over half (57.1%, n=72) of the students had used a computer game (three or more times before), and that only one third (37.3%, n=47) had the experience of using a word processing package. Moreover, other applications and IT-based facilities (e.g. statistical packages, e-mail, databases, CD-ROM searches, programming languages and computer-assisted learning) had never been used by the majority of students. The student nurses' practical experience was less than that reported for medical students in previous studies.

Personas mayores y sus experiencias frente al cambio tecnológico en Murcia Capital: Estudio desde la perspectiva de género

Este estudio forma parte de la tesis doctoral presentada en 2014. Es de tipo cualitativo y tiene como base la Teoría de las expectativas de Eficacia (Bandura, 1977) que pretende hacer un acercamiento sobre cómo las personas mayores se enfrentan al cambio tecnológico en Murcia Capital. Los objetivos del mismo indagan sobre las dificultades, miedos, frustraciones o motivaciones que estas personas experimentan al hacer uso de la tecnología. Con base en sus experiencias, hombres y mujeres mayores, hablan sobre cómo se enfrentan al cambio tecnológico en el ámbito del hogar y del trabajo. Y de cómo esto afecta o contribuye en su desempeño en el trabajo, de la dificultad que representa hacer uso de la tecnología cuando nadie puede auxiliarlos/as o de la motivación que tienen debido al logro de diferentes actividades en línea realizadas con éxito. El estudio 10.601 aporta una nueva visión al identificar diferencias y similitudes entre hombres y mujeres mayores cuando hacen uso de Internet y sus aplicaciones.

Exploring the use of cooperative activities in a language subject to develop students’ social competences at the University

Cooperative learning has been successfully implemented in the last 60 years for teaching at different educational levels including the Higher Studies due to its solid theoretical foundation, the principles it proposes and its practical applications. The purpose of this article is to offer a proposal for some cooperative activities that allow students to work in small groups in a language subject in order to learn not only contents but also putting into practice what they learn, i.e., they learn by being active. This article discusses how the said activities make it possible for students to work with the main principles of cooperative learning, i.e.: positive interdependence, face-to-face interaction, individual and group accountability, interpersonal and small-group skills and group processing. Moreover, this research will also point out that the proposed activities allow students to acquire some of the social competences required in the labour market such as leadership, conflict solving and cooperation.

Taʻlīq laṭīf ʻalá al-Rāmizah fī ʻilmay al-ʻarūḍ wa-al-qāfiyah : manuscript, 1640 or 1641

Copied in 1050 AH? [1640 or 41 AD?].

Design and Implementation of a Cloud-based Middleware for Persuasive Android Applications

Negli ultimi decenni, le tecnologie e i prodotti informatici sono diventati pervasivi e sono ora una parte essenziale delle nostre vite. Ogni giorno ci influenzano in maniera più o meno esplicita, cambiando il nostro modo di vivere e i nostri comportamenti più o meno intenzionalmente. Tuttavia, i computer non nacquero inizialmente per persuadere: essi furono costruiti per gestire, calcolare, immagazzinare e recuperare dati. Non appena i computer si sono spostati dai laboratori di ricerca alla vita di tutti i giorni, sono però diventati sempre più persuasivi. Questa area di ricerca è chiamata pesuasive technology o captology, anche definita come lo studio dei sistemi informatici interattivi progettati per cambiare le attitudini e le abitudini delle persone. Nonostante il successo crescente delle tecnologie persuasive, sembra esserci una mancanza di framework sia teorici che pratici, che possano aiutare gli sviluppatori di applicazioni mobili a costruire applicazioni in grado di persuadere effettivamente gli utenti finali. Tuttavia, il lavoro condotto dal Professor Helal e dal Professor Lee al Persuasive Laboratory all’interno dell’University of Florida tenta di colmare questa lacuna. Infatti, hanno proposto un modello di persuasione semplice ma efficace, il quale può essere usato in maniera intuitiva da ingegneri o specialisti informatici. Inoltre, il Professor Helal e il Professor Lee hanno anche sviluppato Cicero, un middleware per dispositivi Android basato sul loro precedente modello, il quale può essere usato in modo molto semplice e veloce dagli sviluppatori per creare applicazioni persuasive. Il mio lavoro al centro di questa tesi progettuale si concentra sull’analisi del middleware appena descritto e, successivamente, sui miglioramenti e ampliamenti portati ad esso. I più importanti sono una nuova architettura di sensing, una nuova struttura basata sul cloud e un nuovo protocollo che permette di creare applicazioni specifiche per smartwatch.