19,584 research outputs found
Lithium Ionization by a Strong Laser Field
We study ab initio computations of the interaction of Lithium with a strong
laser field. Numerical solutions of the time-dependent fully-correlated
three-particle Schroedinger equation restricted to the one-dimensional
soft-core approximation are presented. Our results show a clear transition from
non-sequential to sequential double ionization for increasing intensities. Non
sequential double ionization is found to be sensitive to the spin configuration
of the ionized pair. This asymmetry, also found in experiments of
photoionization of Li with synchrotron radiation, shows the evidence of the
influence of the exclusion principle in the underlying rescattering mechanism
Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment
RUIZ-JARAMILLO, J. y GARCÍA-PULIDO, L.J., 2018. Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment. Heritage 2018: 6th International Conference on Heritage and Sustainable Development. Granada: Green Lines Institute for Sustainable Development, pp. 1511-1518The Islamic Nasrid kingdom of Granada occupied the mountainous areas of the south-eastern of the Iberian Peninsula. The frontier between the Nasrid kingdom and the Christian kingdom of Castile from 1232 to 1492 was controlled by an extensive network of watchtowers built by Nasrid through the provinces of Granada, Malaga, Almeria and the eastern parts of Jaen, Cordoba and Cadiz. They allowed controlling this frontier stablishing visual communication between them and the Nasrid centre at the Alhambra citadel. Even protected by Spanish Heritage law, many of these medieval towers and their cultural landscapes are in severe risk be-cause of anthropic action as well as natural deterioration. Within the framework of the R&D project called ‘Las atalayas que defendieron el reino nazarí de Granada. Análisis y docu-mentación científica (Nazalaya)”, the towers are being studied. As a complement of planimetry obtained by procedures as photogrammetry or terrestrial laser scanning (TLS), complete architectural surveys using non-destructive techniques are being performed as part of the analysis to obtain a global description of construction systems used.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec
Muslim heritage and environment: the case of the watchtowers of the nasrid kingdom of Granada (thirteenth to fifteenth century)
Luis José García-Pulido y Jonathan Ruiz-Jaramillo. “Muslim heritage and environment: the case of the watchtowers of the nasrid kingdom of Granada (thirteenth to fifteenth century)”. En: Heritage 2018. Proceedings of the 6th International Conference on Heritage and Sustainable Development (10th Anniversary Edition) Granada, Spain, 12-15 June 2018. Edited by Rogério Amoêda, Sérgio Lira, Cristina Pinheiro, Juan M. Santiago Zaragoza, Julio Calvo Serrano, Fabián García Carrillo. Editorial Universidad de Granada y Green Lines Institute for Sustainable Development, Granada, 2018. e-ISBN 978-84-338-6261-7This paper is devoted to the study of the different towers of the Nasrid kingdom of Granada (1232 to 1492) and their linked landscapes, as well as the evolution, preservation, resilience or transformation of their environment until present days.
These late Islamic territories in medieval Iberia occupied the mountainous areas of the southeastern area of today’s Spain. There, a natural border was established between the Nasrid kingdom and the expansion of Castile during more than two centuries and a half. To control this frontier and establish visual communication between it and the Nasrid power centres lead by the Alhambra citadel, an extensive network of watchtowers and defensive towers linked to farmsteads was constructed. These towers are located in unique sites; being erected as reference landmarks of the territories on which they stand. These fortifications, with very diverse typology and morphology, are a faithful testimony to the different territorial structure that has taken place throughout history.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
This paper has been written within the framework of the Spanish Proyecto del Plan Nacional I+D+i (Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia) entitled ‘Las atalayas que defendieron el reino nazarí de Granada. Análisis y documentación científica (Nazalaya)’ (‘The watchtowers that defended the nasrid kingdom of Granada. Analysis and scientific survey’, HAR2016-79689-P), directed by PhD Luis José García-Pulido and PhD Jonathan Ruiz Jaramillo.
This contribution is also been framed within the projects ‘La construcción de un paisaje: arquitectura de tapial en la Alta Andalucía en el siglo XIII. Estudio y análisis del sistema de torres andalusíes en el valle de Segura de la Sierra’ (‘The building of a Landscape: rammed earth architecture in High Andalusia during the thirteenth century. Analysis of the andalusí tower system in the Segura de la Sierra valley’, Proyecto de Investigación Precompetitivo (mod. A) from the Plan Propio de la Universidad de Málaga), and ‘Torres medievales y modernas conservadas en Andalucía. Documentación gráfica, análisis científico e interrelaciones’ (‘Medieval and Modern towers preserved in Andalusia. Graphical survey, scientific analysis and interrelations’, X Convocatoria de Proyectos de Investigación de la Fundación Pública Andaluza Centro de Estudios Andaluces en la modalidad de proyectos individuales, PRY/259/17)
Exponential wealth distribution in a random market. A rigorous explanation
In simulations of some economic gas-like models, the asymptotic regime shows
an exponential wealth distribution, independently of the initial wealth
distribution given to the system. The appearance of this statistical
equilibrium for this type of gas-like models is explained in a rigorous
analytical way.Comment: 9 pages, 4 figure
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