La influencia del musical americano en Gutiérrez Soto

El cine ha sido pionero del gusto artístico, de la moda y, en ocasiones, de nuevas imágenes arquitectónicas. Piénsese, por ejemplo, en la ciudad futurista de Fritz Lang para Metrópolis (1926), o en la arquitectura aerodinámica del film Things to Come (1936). Sin embargo, la traslación de esas imágenes al mundo real no siempre fue inmediata. Una de las pocas excepciones son las películas musicales americanas de los años treinta, que dejaron su huella en la arquitectura d los dancing o salas de fiesta. Tal es el caso del Casablanca Dancing-Salón de té, una obra de Gutiérrez Soto hoy desaparecida.

A new feature extraction method for signal classification applied to cat spinal cord signals

In the spinal cord of the anesthetized cat, spontaneous cord dorsum potentials (CDPs) appear synchronously along the lumbo-sacral segments. These CDPs have different shapes and magnitudes. Previous work has indicated that some CDPs appear to be specially associated with the activation of spinal pathways that lead to primary afferent depolarization and presynaptic inhibition. Visual detection and classification of these CDPs provides relevant information on the functional organization of the neural networks involved in the control of sensory information and allows the characterization of the changes produced by acute nerve and spinal lesions. We now present a novel feature extraction approach for signal classification, applied to CDP detection. The method is based on an intuitive procedure. We first remove by convolution the noise from the CDPs recorded in each given spinal segment. Then, we assign a coefficient for each main local maximum of the signal using its amplitude and distance to the most important maximum of the signal. These coefficients will be the input for the subsequent classification algorithm. In particular, we employ gradient boosting classification trees. This combination of approaches allows a faster and more accurate discrimination of CDPs than is obtained by other methods.

El Banco Hispano Americano: de Canalejas a la calle Alcalá

El Banco Hispano Americano: de Canalejas a la calle Alcalá

La nueva dimensión del Banco Hispano Americano: los edificios de la Banca Sainz, del Crédit Lyonnais y del Banco Zaragozano

La nueva dimensión del Banco Hispano Americano: los edificios de la Banca Sainz, del Crédit Lyonnais y del Banco Zaragozano