Modelos de educación estética y autoridad interpretativa en centros de arte contemporáneo

Este artículo describe las actividades educativas que ofrecen los centros de arte contemporáneo de nuestro entorno, analizando el rol que se otorga al espectador en las prácticas de interpretación de las obras de arte y el tipo de nociones de arte y comprensión estética que estas prácticas fomentan entre los alumnos. La conclusión propone una nueva noción de comprensión estética y pautas para articular un modelo interpretativo que permita desarrollar actividades educativas de calidad en nuestros centros de arte contemporáneo

Organizational power predicts decision making quality

The aim of this study was to analyze the link between power and the quality of decision. Participants were 50 employees from an organizational company, consisting of two groups (High-Power, N=24; Low-Power, N=26) based on the organization's hierarchical power position. To evaluate the quality of the decisions, all participants performed tasks involving choice among several alternatives in two separate moments of the same day: in the morning (at the beginning of the workday) and late afternoon (at the end of the workday). Additional subjective measures (fatigue, alertness, effort) and skin conductance were obtained. Results indicated that having high power in the organization was related to making better decisions, over and above the subjective levels of fatigue, alertness, effort, and physiological arousal. No effects of time-of-day were found on the decision making. Consistent with experimental research, having power facilitated decision-making performance in an organizational context

Anticorrelation between Ion Acceleration and Nonlinear Coherent Structures from Laser-Underdense Plasma Interaction

In laser-plasma experiments, we observed that ion acceleration from the Coulomb explosion of the plasma channel bored by the laser, is prevented when multiple plasma instabilities such as filamentation and hosing, and nonlinear coherent structures (vortices/post-solitons) appear in the wake of an ultrashort laser pulse. The tailoring of the longitudinal plasma density ramp allows us to control the onset of these insabilities. We deduced that the laser pulse is depleted into these structures in our conditions, when a plasma at about 10% of the critical density exhibits a gradient on the order of 250 {\mu}m (gaussian fit), thus hindering the acceleration. A promising experimental setup with a long pulse is demonstrated enabling the excitation of an isolated coherent structure for polarimetric measurements and, in further perspectives, parametric studies of ion plasma acceleration efficiency.Comment: 4 pages, 5 figure