La historiografía en Demografía Histórica española durante la Edad Moderna : un estado de la cuestión

El profesor José Manuel Pérez García nos presenta en síntesis una periodificación de la evolución seguida por la Demografia Histórica en nuestro país durante las tres últimas décadas para reflexionar, posteriormente, sobre algunos de los problemas pendientes en este terreno, en especial sobre la investigación demogrdfíca en el medio urbano y la aplicación, aún escasa, del método de reconstrucción de familias a nivel general.The professor José Manuel Pérez García offer to us in a synthetic way the evolution by periods of the Historical Demography in our counrry through the three last decades, to make then a reflection about the demographical research work in the urban environment and the application -still little today, in a general level- of the method to the reconstruction of families

Demografía cualitativa y coyuntura agraria. Análisis de interdependencias a partir del ejemplo gallego de Salnes (1600-1700)

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Portable low profile antenna at X-band

An antenna which has been conceived as a portable system for satellite communications based on the recommendations ITU-R S.580-6 and ITU-R S.465-5 for small antennas, i.e., with a diameter lower than 50 wavelengths, is introduced. It is a planar and a compact structure with a size of 40×40×2 cm. The antenna is formed by an array of 256 printed elements covering a large bandwidth (14.7%) at X-Band with a VSWR of 1.4:1. The specification includes transmission (Tx) and reception (Rx) bands simultaneously. The printed antenna has a radiation pattern with a 3dB beamwidth of 5°, over a 31dBi gain, and a dual and an interchangeable circular polarization

¿“Natural” y “Euclidiana”? Reflexiones sobre la geometría práctica y sus raíces cognitivas

We discuss critically some recent theses about geometric cognition, namely claims of universality made by Dehaene et al., and the idea of a “natural geometry” employed by Spelke et al. We offer arguments for the need to distinguish visuo-spatial cognition from basic geometric knowledge, furthermore we claim that the latter cannot be identified with Euclidean geometry. The main aim of the paper is to advance toward a characterization of basic, practical geometry – which in our view requires a combination of experiments on visuo-spatial cognition with studies in cognitive archaeology and comparative history. Examples from these fields are given, with special emphasis on the comparison of ancient Chinese and ancient Greek geometric ideas and procedures

Modular Planar Antenna at X-band for satellite communications

An antenna which has been conceived as a portable system for satellite communications based on the recommendations ITU-R S.580-6 [1] and ITU-R S.465-5 [2] for small antennas, i.e., with a diameter lower than 50 wavelengths, is introduced. It is a planar and a compact structure with a size of 40×40×2 cm. The antenna is formed by an array of 256 printed elements covering a large bandwidth (14.7%) at X-Band. The specification includes transmission (Tx) and reception (Rx) bands simultaneously. The printed antenna has a radiation pattern with a 3dB beamwidth of 5°, over a 31dBi gain, and a dual and an interchangeable circular polarizatio

Skinner’s view on hallucinations. Validity and revision

This work outlines the vision that B.F. Skinner held on hallucinations as psychological phenomena, and defends its validity and relevance nowadays. Our thesis starts with the Skinner’s conception on the behaviors of perceiving, imagining and dreaming. It is highlighted that, in Skinner’s point of view, the differences between perception on one hand and imagination or dreaming in the other, focus on what kind of variables control the behavior in question. Thus, the perceptive behavior would be controlled primarily by stimulus surrounding the person, while the imagination or dreaming would be by variables that are “under the skin” of the subject and, therefore, are private and directly inaccessible to the verbal community. On this basis, Skinner comes to an understanding of hallucinations as perceptual behaviors that occur in the absence of a perceived stimulus, similar to the behavior of imagining or dreaming, but, when hallucinating, the person, for various reasons, does not recognize his / her behaviour as controlled mainly by private stimulation. Finally we made some critical remarks regardingthe lack in Skinner’s psychology of a radical theory on the human person

Electro-optical Simulation of a-Si Thin-Film-Transistor Liquid Crystal Display Pixels

An analysis of an amorphous silicon (a-Si) thin-film-transistor liquid-crystal display (TFT-LCD) pixel is presented. The electro-optical model combines the electrical properties of the switching element and the optical performance of a twisted nematic (TN) liquid-crystal cell.Publicad

Terapia de Aceptación y Compromiso aplicada a la esquizofrenia. Estado actual y direcciones futuras

El presenta trabajo ofrece una visión crítica y reconstructiva de la Terapia de Aceptación y Compromiso (ACT) aplicada a la esquizofrenia. Dado que la terapia partía de concepciones psicopatológicas transdiagnósticas, no fue difícil expandir el tratamiento al ámbito de los síntomas psicóticos, existiendo razones conceptuales, clínicas y experimentales que avalaron esta extensión. Se analiza y explica el procedimiento estándar de la terapia, ilustrándolo, cuando es posible, con viñetas con diálogos. Se resumen cada una de las fases y se adapta a las peculiaridades de la población a la que está dirigida este trabajo. Igualmente se hace una revisión de los resultados de la terapia, resaltando las dificultades encontradas y, en general, la pérdida de resultados sólidos en comparación con otras intervenciones menos sofisticadas. La parte final del artículo presenta varias propuestas de futuro, tendentes a mejorar la terapia, que pasarían, en primer lugar, por reformular el propio concepto de esquizofrenia como un desorden del “yo” y, por otro lado, por adaptar ACT a la cultura española partiendo de las concepciones ratio-vitalistas de José Ortega y GassetThis paper provides a critical and reconstructive vision of Acceptation and Commitment Therapy (ACT) applied to psychotic symptoms. Taking into account that the therapy was based on transdiagnostical conceptions, it was not difficult to expand the scope of the treatment to psychotic symptoms; with experimental, conceptual, and clinical reasons that supported this extension. The article analyzes and explains the standard procedure of ACT, illustrating, when possible, with vignettes. Each of the phases of the Therapy are summarized and adapted to the peculiarities of psychotic patients. Also a review of the results of the therapy is exposed, highlighting the difficulties found for its application and, in general, the loss of solid results compared with other less sophisticated interventions. The final part of the paper presents several proposals for the future, aimed at improving the therapy. The first one could be to reformulate the concept of schizophrenia as a disorder of the “self”. The second proposal for the future could be adapt ACT to the Spanish culture, with José Ortega y Gasset as a reference for this tas

A note on isoperimetric inequalities of Gromov hyperbolic manifolds and graphs

We study in this paper the relationship of isoperimetric inequality and hyperbolicity for graphs and Riemannian manifolds. We obtain a characterization of graphs and Riemannian manifolds (with bounded local geometry) satisfying the (Cheeger) isoperimetric inequality, in terms of their Gromov boundary, improving similar results from a previous work. In particular, we prove that having a pole is a necessary condition to have isoperimetric inequality and, therefore, it can be removed as hypothesis.First author supported in part by a Grant from Ministerio de Ciencia, Innovación y Universidades (PGC2018-098321-B-I00), Spain. Second author supported in part by two Grants from Ministerio de Economía y Competitividad, Agencia Estatal de Investigación (AEI) and Fondo Europeo de Desarrollo Regional (FEDER) (MTM2016-78227-C2-1-P and MTM2017-90584-REDT), Spain. Also, the research of the second author was supported by the Madrid Government (Comunidad de Madrid-Spain) under the Multiannual Agreement with UC3M in the line of Excellence of University Professors (EPUC3M23), and in the context of the V PRICIT (Regional Programme of Research and Technological Innovation)

Introducción

Aquest monogràfic d'Anàlisi presenta avanços i novetats en l'ampli camp de l'alfabetització mediàtica dels joves. Assenyala les qüestions que semblen decisives en aquests moments i ho fa des d'una perspectiva internacional en la qual es combinen una mirada comparativa, en alguns casos, amb l'estudi local –especialment en qüestions que afecta a Europa i Espanya—. És una mostra de l'interès de la investigació en aquest camp i, al mateix temps, de la gradual integració i consolidació de metodologies i punts de vista compartits que s'està experimentant en aquest sector en els últims temps