Observaciones sobre la recepción del teatro de Calderón en la crítica de Marchena: ¿la antítesis de la querella calderoniana?

El objetivo de este artículo es considerar las ideas de Marchena sobre el teatro de Calderón, dentro del debate en torno al autor del Alcalde de Zalamea que sacude el primer tercio del siglo XIX. Se parte de los juicios y la antología de textos calderonianos que Marchena cita y edita en sus Lecciones de Filosofía Moral y Elocuencia (1820), de acuerdo con su original concepción civil de la historia literaria española.The aim of this article is to review Marchena’s ideas about Calderón’s theater, which fall within the debate about the author of El Alcalde de Zalamea that raged over the first third of the Nineteenth Century. The paper draws on the judgments and the anthology of Calderonian texts that Marchena cites and edits according to his original civil conception of Spanish literary history in his Lecciones de Filosofía Moral y Elocuencia (1820)

Historical reconstruction of the population dynamics of southern right whales in the southwestern Atlantic Ocean

Understanding the recovery of whale populations is critical for developing population-management and conservation strategies. The southern right whale (SRW) Eubalena australis was one of the baleen whale species that has experienced centuries of exploitation. We assess here for the first time the population dynamics of the SRW from the southwestern Atlantic Ocean at the regional level to measure numerically the effect of whaling and estimate the population trend and recovery level after depletion. We reconstructed the catch history of whaling for the period 1670–1973 by an extensive review of different literature sources and developed a Bayesian state-space model to estimate the demographic parameters. The population trajectory indicated that the pre-exploitation abundance was close to 58,000 individuals (median = 58,212; 95% CI = 33,329–100,920). The abundance dropped to its lowest abundance levels in the 1830s when fewer than 2,000 individuals remained. The current median population abundance was estimated at 4,742 whales (95% CI = 3,853–6,013), suggesting that the SRW population remains small relative to its pre-exploitation abundance (median depletion P2021 8.7%). We estimated that close to 36% of the SRW population visits the waters of the Península Valdés, the main breeding ground, every year. Our results provide insights into the severity of the whaling operation in the southwestern Atlantic along with the population´s response at low densities, thus contributing to understand the observed differences in population trends over the distributional range of the species worldwide.Fil: Romero, Maria Alejandra. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; ArgentinaFil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Adams, G. A.. University of Washington; Estados UnidosFil: Pedraza, Juan C.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: González, Raul Alberto Candido. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentin

Effect of the microstructure generated by repetitive corrugation and straightening (RCS) process on the mechanical properties and stress corrosion cracking of Al-7075 alloy

This study discussed the effect of the heterogeneous microstructure generated through the Repetitive Corrugation and Straightening (RCS) process on the mechanical and stress corrosion cracking behavior of the AA7075. As a result of the RCS process, significant grain refinement was obtained. The average grain size ranged from 126 to 59 µm, for the initial condition and 4 RCS passes, respectively. The yield strength and hardness increased 170% and 15% from the initial pass, remaining almost constant afterward. The evaluation of stress corrosion cracking showed a decrement in the number of cracks of 21.6% and 23.5% between the initial condition and fourth RCS passes. The cracking and pitting corrosion were the dominant mechanisms in the tested samples. The mechanical and corrosion results were also discussed in terms of the microstructural features.Peer ReviewedPostprint (published version

One Way of Bringing Final Year Computer Science Student World to the World of Children with Cerebral Palsy: A Case Study

In this paper, a learning project is explained which is being carried out at the school of computer science at the University of Seville. The aim is that students receive knowledge of assistive technologies when in fact there is no this discipline in our curricula. So the best way, it is programming final studies projects in this field. We want to make the projects have a real application and can solve difficulties that children with Cerebral Palsy have in their daily activities in the school.Junta de Andalucía p08-TIC-363

Green economy metrics as a promoter of sustainable development in universities. Case study: El Bosque University

The exchange that occurs in universities when they participate in international rankings is an important space to share and grow in the academic production of teachers and in the training of students. At the beginning, the sustainable social responsibility system was adhered only to the industry due to the increase in large-scale production; however, the academy has taken a voice and vote on this climate phenomenon. This is why projects aimed at sustainability have been proposed in universities that aim at a green economy. Likewise, the UI Green Metric Rankings allows higher education institutions worldwide to measure their sustainable actions in different categories on a voluntary basis.For this reason, this article presents the best practices of the University El Bosque against the different indicators that the UI Green Metric measures, such as infrastructure, energy and climate change, waste, water, transport and education. Consequently, the concept of sustainability has become a vital element for the development of programs that involve the institution in internationalization through the global recognition generated by being participants and being able to be in the range of green universities.As a conclusion of this exchange, Based on responsible production methods with the natural and social environment or Clean Modalities, a production cycle is proposed that opens the possibility of integrating with other related production systems that receive their waste as raw materials in a network, this is Symbiotic Cycle. To arrive at the approach of a symbiotic disposal of waste as inputs with other production systems in such a way as to consolidate a set of sustainable organizations that collaborate with each other and that continuously recover the value to increase efficiency.Keyword: sustainability, green economy, sustainable developmen

Two-Dimensional Time-Domain Antenna Arrays for Optimum Steerable Energy Pattern with Low Side Lobes

This document presents the synthesis of different two-dimensional time-domain antenna arrays for steerable energy patterns with side lobe levels. The research is focused on the uniform and nonuniform distributions of true-time exciting delays and positions of antenna elements. The uniform square array, random array, uniform concentric ring array, and rotated nonuniform concentric ring array geometries are particularly studied. These geometries are synthesized by using the well-known sequential quadratic programming. The synthesis regards the optimal true-time exciting delays and optimal positions of pulsed antenna elements. The results show the capabilities of the different antenna arrays to steer the beam in their energy pattern in time domain and how their performance is in frequency domain after the synthesis in time domain

Software para el aprendizaje de convertidores digitales-analógicos.

Se presenta un paquete de software didáctico que facilita el proceso de enseñanza/ aprendizaje de la electrónica, en concreto, de convertidores digital-analógicos. Consta de una sección expositiva, en la que se describen los contenidos de la materia, más un conjunto de simulaciones que permiten al alumno conocer el funcionamiento interno del convertidor, la evolución de sus parámetros y los valores intermedios de sus variables durante la ejecución del algoritmo de conversión D/A. Asímismo, se incluye un conjunto tutoriales basados en animaciones que muestran como se ejecutan las simulaciones, y el funcionamiento del Convertidor Digital-Analógico (CDA) seleccionado

Surface nanostructuring of TiO2 thin films by ion beam irradiation

This work reports a procedure to modify the surface nanostructure of TiO2 anatase thin films through ion beam irradiation with energies in the keV range. Irradiation with N+ ions leads to the formation of a layer with voids at a depth similar to the ion-projected range. By setting the ion-projected range a few tens of nanometers below the surface of the film, well-ordered nanorods appear aligned with the angle of incidence of the ion beam. Slightly different results were obtained by using heavier (S+) and lighter (B+) ions under similar conditions

The nature of transition circumstellar disks III: Perseus, Taurus, and Auriga

As part of an ongoing program aiming to characterize a large number of Spitzer-selected transition disks (disks with reduced levels of near-IR and/or mid-IR excess emission), we have obtained (sub)millimeter wavelength photometry, high-resolution optical spectroscopy, and adaptive optics near-infrared imaging for a sample of 31 transition objects located in the Perseus, Taurus, and Auriga molecular clouds. We use these ground-based data to estimate disk masses, multiplicity, and accretion rates in order to investigate the mechanisms potentially responsible for their inner holes. Following our previous studies in other regions, we combine disk masses, accretion rates, and multiplicity data with other information, such as spectral energy distribution morphology and fractional disk luminosity, to classify the disks as strong candidates for the following categories: grain-growth-dominated disks (seven objects), giant planet-forming disks (six objects), photoevaporating disks (seven objects), debris disks (11 objects), and cicumbinary disks (one object, which was also classified as a photoevaporating disk). Combining our sample of 31 transition disks with those from our previous studies results in a sample of 74 transition objects that have been selected, characterized, and classified in a homogenous way. We discuss this combined high-quality sample in the context of the current paradigm of the evolution and dissipation of protoplanetary disks and use its properties to constrain different aspects of the key processes driving their evolution. We find that the age distribution of disks that are likely to harbor recently formed giant planets favors core accretion as the main planet formation mechanism and a 2-3Myr formation timescale.Facultad de Ciencias Astronómicas y Geofísica