Influencia de la cuantía de armadura longitudinal en el comportamiento a cortante en vigas isoestáticas pretesas

Para el estudio de la influencia de la cuantía de armadura longitudinal y de pretensado en la rsistencia a cortante, se llevó a cabo en el LTE de la UPC una campaña de ensayos de 6 vigas isostáticas de hormigón convencional y autocompactable, diseñadas para su rotura por cortante. El objetivo primordial era la verificación de la formulación de la EHE que calcula la resistencia a cortante para estas vigas. Asimismo se estudió el comportamiento del hormigón autocompactable frente al convencional, tanto en las fases de construcción de las vigas como en la fase de ensayos

An Operationally Based Vision Assessment Simulator for Domes

The Operational Based Vision Assessment (OBVA) simulator was designed and built by NASA and the United States Air Force (USAF) to provide the Air Force School of Aerospace Medicine (USAFSAM) with a scientific testing laboratory to study human vision and testing standards in an operationally relevant environment. This paper describes the general design objectives and implementation characteristics of the simulator visual system being created to meet these requirements. A key design objective for the OBVA research simulator is to develop a real-time computer image generator (IG) and display subsystem that can display and update at 120 frame s per second (design target), or at a minimum, 60 frames per second, with minimal transport delay using commercial off-the-shelf (COTS) technology. There are three key parts of the OBVA simulator that are described in this paper: i) the real-time computer image generator, ii) the various COTS technology used to construct the simulator, and iii) the spherical dome display and real-time distortion correction subsystem. We describe the various issues, possible COTS solutions, and remaining problem areas identified by NASA and the USAF while designing and building the simulator for future vision research. We also describe the critically important relationship of the physical display components including distortion correction for the dome consistent with an objective of minimizing latency in the system. The performance of the automatic calibration system used in the dome is also described. Various recommendations for possible future implementations shall also be discussed

Teresa de Jesús, entre obediencia y transgresión. Gisele Gómez, STJ. Burgos: Monte Carmelo, 2014. [Ressenya]

El interesante libro surge de una selección del contenido que integra la tesis doctoral que defendió Giselle Gómez Guillén, religiosa de la Compañía de Santa Teresa de Jesús, en diciembre de 2014. En concreto, la edición elimina la bibliografía (que se echa en falta) y los capítulos segundo y quinto para reducir la obra a tres apartados enmarcados, respectivamente, por una introducción y una conclusión (que resume las claves interpretativas que alimentan el estudio

Decentralized rationing problems [WP]

Decentralized rationing problems are those in which the resource is not directly assigned to agents, but first allocated to groups of agents and then divided among their members. Within this framework, we define extensions of the constrained equal awards, the constrained equal losses and the proportional rules. We show that the first two rules do not preserve certain essential properties and prove the conditions under which both rules do preserve those properties. We characterize the extension of the proportional rule as the only solution that satisfies individual equal treatment of equals. We prove that the proportional rule is the only solution that assigns the same allocation regardless of whether the resource is distributed directly to agents or in a decentralized manner (with agents grouped). Finally, we analyse a strategic game based on decentralized rationing problems in which agents can move freely across groups to submit their claims

Expo-ESA

Peer Reviewe

Fue levado mi entendimiento: Teresa de Cartagena y la escritura mística en femenino

Resumen: En torno a los años 1470-1475, la religiosa Teresa de Cartagena (sobrina del prestigioso humanista Alonso de Cartagena) deseó y necesitó escribir sobre su personal experiencia en femenino del amor divino, y nos legó dos valiosos tratados que abren la senda de los diversos textos compuestos por religiosas castellanas del siglo XVI. La escritora burgalesa destaca meritoriamente en la historia de la literatura bajomedieval y puede considerarse una digna precedente de la gran escritora Teresa de Jesús. Ambas comparten ciertas similitudes biográficas y espirituales que merecen tenerse en cuenta a la hora de diseñar una genealogía de autoras de literatura espiritual en lengua castellana.   Palabras clave: Literatura espiritual, primeras escritoras, mística española, Teresa de CartagenaAbstract: Around the years 1470-1475, the nun Teresa de Cartagena (niece of the renowned humanist Alfonso de Cartagena) wanted and needed to write about her personal female experience of God’s love, and left us two valuable treatises that open the path to the writings composed by 16th-century Castilian nuns. Teresa stands out meritoriously in the history of late medieval literature and she can be considered a worthy precursor of the great Teresa de Jesús. Both women writers share certain biographical and spiritual similarities that deserve to be taken into account when designing a genealogy of female authors of spiritual literature in Spanish.   Keywords: Spiritual literature, early women writers, Spanish mysticism, Teresa de Cartagena

Rationing problems with payoff thresholds

An extension of the standard rationing model is introduced. Agents are not only identi fied by their respective claims over some amount of a scarce resource, but also by some payoff thresholds. These thresholds introduce exogenous differences among agents (full or partial priority, past allocations, past debts, ...) that may influence the final distribution. Within this framework we provide generalizations of the constrained equal awards rule and the constrained equal losses rule. We show that these generalized rules are dual from each other. We characterize the generalization of the equal awards rule by using the properties of consistency, path-independence and compensated exemption. Finally, we use the duality between rules to characterize the generalization of the equal losses solution