957 resultados para Luis XI, Rey de Francia, 1423-1483-Biografías


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En el presente trabajo se analiza la manera en la que el dramaturgo valenciano Andrés Rey de Artieda diseñó los diferentes espacios dramáticos por los que transcurre la acción de su única pieza teatral conocida: Los amantes. Compuesta poco después de 1577, se trata de una obra deudora de los parámetros dramatúrgicos de su tiempo, pues el componente literario del texto dramático predomina claramente sobre el espectacular. Estamos ante un tipo de teatro fundamentado en la palabra y muy poco en lo visual.Sin embargo, ya se perciben en el texto ciertos rasgos de innegable modernidad, que es el asunto que me ha interesado a la hora de acercarme a él. Mi objetivo será demostrar el dinamismo con el que se producen los cambios de espacio dramático a lo largo de la trama argumental para subrayar que Rey de Artieda tenía ya asumidas algunas de las innovaciones que desembocarán en el teatro nacional español unas décadas más tarde.

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A mediados del siglo VII, el obispo Ildefonso de Toledo (657-667) elaboró su propio catálogo de hombres ilustres, continuando una tradición cuyos orígenes cristianos se remontaban a Jerónimo en el siglo IV. Sin embargo, en lugar de reproducir los modelos de sus antecesores cristianos, entre los que se incluyen además a Genadio de Marsella e Isidoro de Sevilla, el De viris illustribus de Ildefonso incorporaba cambios significativos en el género. Este artículo estudia el tópico del milagro en el opúsculo toledano con el objetivo de indagar qué tipo de relación estableció la Iglesia visigoda de la segunda mitad del siglo VII con este tipo de fenómenos y qué estrategias elaboró en función de él.

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El presente trabajo analiza la evolución del señorío eclesiástico en el largo plazo, para sumar al conocimiento de las formas señoriales de la Extremadura leonesa. Consideramos específicamente el caso del cabildo catedralicio salmantino entre los siglos XII y XV. Buscamos demostrar que no poseyó idéntica estructura durante todo el período y que sus transformaciones se explican por una compleja conjunción de variables. Dichas transformaciones incidieron sobre las estructuras sociales del agro, en especial sobre el desarrollo de procesos de diferenciación social campesina. Demostramos que la forma concreta en que se realizaba la renta podía alterar las estructuras sociales de las comunidades y que el desarrollo de las relaciones sociales asalariadas se encontraba muy vinculado a las coyunturas económicas y a las posibilidades y límites de la gestión señorial. Finalmente, ponemos de relieve que la transformación social no siempre fue irreversible y que su consolidación dependió de la incapacidad de los señores de ejercer sus poderes políticos.

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El presente trabajo pretende analizar cuáles eran las características climáticas que se sucedían en Madrid y su Tierra a lo largo del año, fundamentalmente entre los siglos XIV y XVI. Se intentará comprobar, dentro de las limitaciones que impone la documentación de la época, si en aquel tiempo se daba también un clima mediterráneo, o no, y si este ha variado mucho desde entonces. Igualmente se podrá comprobar algo que tal vez podría, aunque no debería, sorprendernos: el hombre medieval tenía muy claros muchos conceptos meteorológicos y climatológicos, aunque siempre aprehendidos con una finalidad práctica, para aplicarlos en su vida cotidiana tan cercana y dependiente de la naturaleza.

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This article studies the house of seclusion established for devout Indian and mestizo laywomen in the town of Pasig in 1740, and the dispute over tribute obligations that affected retreated or “pious” women. Founded outside of the Royal Patronato, this house of seclusion was extraordinarily attractive as a place for voluntary retreat and as an educational center. The dispute over tribute payments brought to light misgivings and conflicts of interest between the parties involved, while revealing the fundamental problem: the traditionally undefined juridical status of this type of establishment on the Islands. The solution given to the problem (tribute exemption) was to be extended to other similar centers in the Philippines. This article, realized with the use of unpublished documentation from the General Archives of the Indies, contributes therefore to our knowledge of the world of women in the Philippine archipelago; an ambit of great complexity that, as of yet, has been insufficiently studied.

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El doble aspecto documental y artístico de la escritura de la historia ha quedado prácticamente oculto por la insistencia en el carácter científico de la disciplina y su expulsión subsiguiente del canon literario desde el siglo XIX. El cultivo de la historiografía ficticia o imaginaria (fictohistoria) surgió entonces como un modo de salvar la literariedad de la historia, en su calidad de género formal, mediante el uso del discurso historiográfico como procedimiento retórico para conseguir un efecto de historicidad en textos que son, no obstante, claramente ficticios, y que tienen a menudo un carácter satírico o admonitorio. Esto no está reñido con el hecho de que la mayoría manifieste en primer lugar una reflexión sobre el devenir de la humanidad, es decir, sobre la Historia. Los ejemplos de este género son relativamente abundantes y se pueden clasificar en varias categorías temáticas. Esta segunda parte del estudio se centra en la historia prospectiva.

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El objetivo de este artículo es presentar las observaciones realizadas durante la consulta de los originales de los códices Borgia (Borg. Mess. 1) y Vaticano B (Vat. Lat. 3773) en la Biblioteca Apostólica Vaticana en 2014. Este estudio codicológico, aunque a la fuerza parcial, dado que fue realizado solamente por medio de una observación directa, revela nuevos datos acerca de la elaboración de los manuscritos prehispánicos, tanto en la preparación de la piel como soporte como en los procedimientos aplicados a la hora de trazar las imágenes y corregir las equivocaciones.

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Fondo Margaritainés Restrepo

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This paper describes the current status of a program to develop an automated forced landing system for a fixed-wing Unmanned Aerial Vehicle (UAV). This automated system seeks to emulate human pilot thought processes when planning for and conducting an engine-off emergency landing. Firstly, a path planning algorithm that extends Dubins curves to 3D space is presented. This planning element is then combined with a nonlinear guidance and control logic, and simulated test results demonstrate the robustness of this approach to strong winds during a glided descent. The average path deviation errors incurred are comparable to or even better than that of manned, powered aircraft. Secondly, a study into suitable multi-criteria decision making approaches and the problems that confront the decision-maker is presented. From this study, it is believed that decision processes that utilize human expert knowledge and fuzzy logic reasoning are most suited to the problem at hand, and further investigations will be conducted to identify the particular technique/s to be implemented in simulations and field tests. The automated UAV forced landing approach presented in this paper is promising, and will allow the progression of this technology from the development and simulation stages through to a prototype system

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While using unmanned systems in combat is not new, what will be new in the foreseeable future is how such systems are used and integrated in the civilian space. The potential use of Unmanned Aerial Vehicles in civil and commercial applications is becoming a fact, and is receiving considerable attention by industry and the research community. The majority of Unmanned Aerial Vehicles performing civilian tasks are restricted to flying only in segregated space, and not within the National Airspace. The areas that UAVs are restricted to flying in are typically not above populated areas, which in turn are the areas most useful for civilian applications. The reasoning behind the current restrictions is mainly due to the fact that current UAV technologies are not able to demonstrate an Equivalent Level of Safety to manned aircraft, particularly in the case of an engine failure which would require an emergency or forced landing. This chapter will preset and guide the reader through a number of developments that would facilitate the integration of UAVs into the National Airspace. Algorithms for UAV Sense-and-Avoid and Force Landings are recognized as two major enabling technologies that will allow the integration of UAVs in the civilian airspace. The following sections will describe some of the techniques that are currently being tested at the Australian Research Centre for Aerospace Automation (ARCAA), which places emphasis on the detection of candidate landing sites using computer vision, the planning of the descent path trajectory for the UAV, and the decision making process behind the selection of the final landing site.

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Results of mass spectrometric studies are reported for the collisional dissociation of Group XI (Cu, Ag, Au) metal ion complexes with fatty acids (palmitic, oleic, linoleic and a-linolenic) and glycerolipids. Remarkably, the formation of M2H+ ions (M = Cu, Ag) is observed as a dissociation product of the ion complexes containing more than one metal cation and only if the lipid in the complex contains a double bond. Ag2H+ is formed as the main dissociation channel for all three of the fatty acids containing double bonds that were investigated while Cu2H+ is formed with one of the fatty acids and, although abundant, is not the dominant dissociation channel. Also. Cu(I) and Ag(I) ion complexes were observed with glycerolipids (including triacylglycerols and glycerophospholipids) containing either saturated or unsaturated fatty acid substituents. Interestingly. Ag2H+ ion is formed in a major fragmentation channel with the lipids that are able to form the complex with two metal cations (triacylglycerols and glycerophosphoglycerols), while lipids containing a fixed positive charge (glycerophospocholines) complex only with a single metal cation. The formation of Ag2H+ ion is a significant dissociation channel from the complex ion Ag-2(L-H)(+) where L = Glycerophospholipid (GP) (18:1/18:1). Cu(I) also forms complexes of two metal cations with glycerophospholipids but these do not produce Cu2H+ upon dissociation. Rather organic fragments, not containing Cu(I), are formed, perhaps due to different interactions of these metal cations with lipids resulting from the much smaller ionic radius of Cu(I) compared to Ag(I) (C).

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One of the objectives of this study was to evaluate soil testing equipment based on its capability of measuring in-place stiffness or modulus values. As design criteria transition from empirical to mechanistic-empirical, soil test methods and equipment that measure properties such as stiffness and modulus and how they relate to Florida materials are needed. Requirements for the selected equipment are that they be portable, cost effective, reliable, a ccurate, and repeatable. A second objective is that the selected equipment measures soil properties without the use of nuclear materials.The current device used to measure soil compaction is the nuclear density gauge (NDG). Equipment evaluated in this research included lightweight deflectometers (LWD) from different manufacturers, a dynamic cone penetrometer (DCP), a GeoGauge, a Clegg impact soil tester (CIST), a Briaud compaction device (BCD), and a seismic pavement analyzer (SPA). Evaluations were conducted over ranges of measured densities and moistures.Testing (Phases I and II) was conducted in a test box and test pits. Phase III testing was conducted on materials found on five construction projects located in the Jacksonville, Florida, area. Phase I analyses determined that the GeoGauge had the lowest overall coefficient of variance (COV). In ascending order of COV were the accelerometer-type LWD, the geophone-type LWD, the DCP, the BCD, and the SPA which had the highest overall COV. As a result, the BCD and the SPA were excluded from Phase II testing.In Phase II, measurements obtained from the selected equipment were compared to the modulus values obtained by the static plate load test (PLT), the resilient modulus (MR) from laboratory testing, and the NDG measurements. To minimize soil and moisture content variability, the single spot testing sequence was developed. At each location, test results obtained from the portable equipment under evaluation were compared to the values from adjacent NDG, PLT, and laboratory MR measurements. Correlations were developed through statistical analysis. Target values were developed for various soils for verification on similar soils that were field tested in Phase III. The single spot testing sequence also was employed in Phase III, field testing performed on A-3 and A-2-4 embankments, limerock-stabilized subgrade, limerock base, and graded aggregate base found on Florida Department of Transportation construction projects. The Phase II and Phase III results provided potential trend information for future research—specifically, data collection for in-depth statistical analysis for correlations with the laboratory MR for specific soil types under specific moisture conditions. With the collection of enough data, stronger relationships could be expected between measurements from the portable equipment and the MR values. Based on the statistical analyses and the experience gained from extensive use of the equipment, the combination of the DCP and the LWD was selected for in-place soil testing for compaction control acceptance. Test methods and developmental specifications were written for the DCP and the LWD. The developmental specifications include target values for the compaction control of embankment, subgrade, and base materials.

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