The content analysis methodology. Uses and applications in communication research on Spanish-speaking countries

Based on a conceptual review of the content analysis research method, this article identifies meta-research studies that confirm the relevance of this technique in the atomised field of communication sciences. In light of the empirical evidence, this study is based on an analysis of 262 papers that use this tool and were published in major Spanish-language journals between 2013 and 2017. At instrumental level, bibliometric exploration is combined with content analysis itself, considering 18 categories, such as authorship, funding, sampling method and reporting of intercoder reliability. The results indicate that there is a steady annual growth in the number of papers produced by researchers affiliated to Spanish universities. These papers have more than two authors on average and often lack additional financial resources. As for the implementation of the content analysis method, it is generally applied to non-probabilistic samples and does not involve any intercoder reliability assessment and reporting. A series of recommendations are offered for researchers in Spain and in Latin America to meet international standards.Tras efectuar una panorámica conceptual sobre el análisis de contenido, se identifican algunas metainvestigaciones que atestiguan la relevancia de esta técnica en el atomizado campo de las ciencias de la comunicación. Habida cuenta de las evidencias empíricas detectadas, se examinan 262 artículos que se sirven de esta herramienta, publicados en las principales revistas del ámbito hispánico durante el quinquenio 2013-2017. A nivel instrumental, se combinan la exploración bibliométrica con el propio análisis de contenido, reflejados en una plantilla de 18 parámetros tales como: la autoría, la financiación de los estudios, la estrategia de muestreo empleada o el reporte de la fiabilidad intercodificadores. A la luz de los resultados, se aprecia un incremento anual constante del número de manuscritos publicados a cargo de académicos procedentes, a menudo, de instituciones universitarias españolas. Estos estudios, firmados por más de dos autores de media, suelen carecer de recursos financieros adicionales. En cuanto a la implementación del método, es precedido por el diseño de muestras no probabilísticas y, tras la codificación, los analistas prescinden, el común de las veces, de cualquier indicador sobre confiabilidad. En último término, se proponen unas recomendaciones para que la futura producción, tanto en España como en Hispanoamérica, se adecúe a los estándares internacionalmente exigidos

Pressure-induced metal-insulator transition in MgV_2O_4

On the basis of experimental thermoelectric power results and ab initio calculations, we propose that a metal-insulator transition takes place at high pressure (approximately 6 GPa) in MgV_2O_4.Comment: 2 pages, 3 figures, accepted in Physica B (Strongly Correlated Electron Systems '07

El poblado histórico de Caá Catí : la dimensión de lo público y lo privado del paisaje cultural

El trabajo está centrado en el estudio de los paisajes culturales de Caá Catí donde se conjugan lo público y privado en la configuración del espacio como respuesta a las características climáticas que propiciaron la vida al aire libre y del paisaje natural definido por extensas áreas anegables, estrechos y alargadas lomadas arenosas, factores que condicionaron fuertemente el desarrollo urbano y económico-productivo, y forjaron un entramado social con fuertes rasgos identitarios expresados a través de manifestaciones culturales que hallan en el espacio público, creado en etapas tempranas y recreado en varias versiones hasta en la época actual, el lugar propicio para llevarlas a cabo. Por tanto, el estudio indaga sobre las características del soporte físico natural y en la conformación del tejido urbano en respuesta a las condiciones físicas, así como, en el tejido sociocultural que se fue conformando en respuesta a las dos primeras dimensiones a través de algunas de su expresiones culturales y religiosas más antiguas y emblemáticas, enlazando así, a modo de hilo conductor, el trinomio Paisaje-CulturaSociedad

Una propuesta metodológica para la identificación de categorías de paisajes culturales patrimoniales en la región noroeste de Corrientes

En el trabajo se propone delinear un proceso metodológico para el abordaje del estudio de los paisajes culturales de la región noroeste de Corrientes, de ocupación colonial española que por sus características es una de las más antiguas de la provincia. Esta región presenta ciertas particularidades naturales que, a través del tiempo, han condicionado fuertemente la historia de los asentamientos humanos establecidos en ella. Los paisajes culturales resultantes de su evolución son similares y, por tanto, comparables. Se pretende, a través de la metodología propuesta, arribar a la definición de categorías de paisaje que pudieran ser claramente identificables y comparables en la región, así como destacar su valor como bien patrimonial

Enhanced dimerization of TiOCl under pressure: spin-Peierls - to - Peierls transition

We report high-pressure x-ray diffraction and magnetization measurements combined with ab-initio calculations to demonstrate that the high-pressure optical and transport transitions recently reported in TiOCl, correspond in fact to an enhanced Ti3+-Ti3+ dimerization existing already at room temperature. Our results confirm the formation of a metal-metal bond between Ti3+ ions along the b-axis of TiOCl, accompanied by a strong reduction of the electronic gap. The evolution of the dimerization with pressure suggests a crossover from the spin-Peierls to a conventional Peierls situation at high pressures.Comment: 9pages, 4 figure

Fermiology and transport properties of the half-metallic itinerant ferromagnet CoS2_2: influence of spin orbit coupling

Electronic structure calculations were performed on the compound CoS$_2$, an itinerant ferromagnet whose magnetic properties can be understood in terms of spin fluctuation theory. We have identified nesting features in the Fermi surface of the compound, active for long wavelength spin fluctuations. The electronic structure of the material is close to a half-metal. We show the importance of introducing spin-orbit coupling (SOC) in the calculations, that partially destroys the half-metallicity of the material. By means of transport properties calculations, we have quantified the influence of SOC in the conductivity at room temperature, with an important decrease comparing to the GGA alone conductivity. SOC also helps to understand the negative 0 of the material, whose conductivity varies by a few percent with the introduction of small perturbations in the states around the Fermi level.Comment: 8 pages, 8 figure

Ab initio study of the influence of nanoscale doping inhomogeneities in the phase separated state of La1−x_{1-x}Cax_{x}MnO3_3

The chemical influence in the phase separation phenomenon that occurs in perovskite manganites is discussed by means of ab initio calculations. Supercells have been used to simulate a phase separated state, that occurs at Ca concentrations close to the localized to itinerant crossover. We have first considered a model with two types of magnetic ordering coexisting within the same compound. This is not stable. However, a non-isotropic distribution of chemical dopants is found to be the ground state. This leads to regions in the system with different effective concentrations, that would always accompany the magnetic phase separation at the same nanometric scale, with hole-rich regions being more ferromagnetic in character and hole-poor regions being in the antiferromagnetic region of the phase diagram, as long as the system is close to a phase crossover.Comment: 8 pages, 7 figures, 1 tabl

Stellar activity in barium stars .1. Analysis of H-lines and K-lines CA-II-lines in 10 barium stars

High dispersion spectra have been obtained in order to study the activity level of ten barium stars by means of the Ca II H and K emission flux, looking for a relation between barium intensity index and activity. Absolute magnitudes obtained from the Wilson-Bappu relationship disagree, in some cases, with the magnitudes computed from parallaxes, but this fact is not due to barium nature. Total emission fluxes, F(H + K) or R_HK index, plotted versus effective temperature show a distribution similar to that of cool giant stars. The asymmetry of K emission line, [F(K_2ν)/F(K_2r)], has been analyzed in relation with effective temperature, in this sense barium stars behave as expected of late-type giants with the only exception of two stars

AGR2, an Endoplasmic Reticulum Protein, Is Secreted into the Gastrointestinal Mucus

The MUC2 mucin is the major constituent of the two mucus layers in colon. Mice lacking the disulfide isomerase-like protein Agr2 have been shown to be more susceptible to colon inflammation. The Agr2(-/-) mice have less filled goblet cells and were now shown to have a poorly developed inner colon mucus layer. We could not show AGR2 covalently bound to recombinant MUC2 N- and C-termini as have previously been suggested. We found relatively high concentrations of Agr2 in secreted mucus throughout the murine gastrointestinal tract, suggesting that Agr2 may play extracellular roles. In tissue culture (CHO-K1) cells, AGR2 is normally not secreted. Replacement of the single Cys in AGR2 with Ser (C81S) allowed secretion, suggesting that modification of this Cys might provide a mechanism for circumventing the KTEL endoplasmic reticulum retention signal. In conclusion, these results suggest that AGR2 has both intracellular and extracellular effects in the intestine

Non-one-dimensional behavior in charge-ordered structurally quasi-one-dimensional Sr6Co5O15

We have synthesized Sr6Co5O15, a quasi-one-dimensional oxide, measured its magnetic properties, and calculated its electronic structure by ab initio techniques. We have found strong evidence for its electronic and magnetic behavior not to follow the trend of its structural series. The magnetic coupling inside the CoO3 chains is not purely ferromagnetic, and the long-range coupling inside the chains is very weak. The Co moments are slightly canted due to their large orbital angular momenta being oriented along each particular quantization axis, which is different for each Co4+ atom in the structure. Our thermopower calculations are in agreement with the experiment, supporting our model of the magnetic ground state of the compound.Fil: Botana, A. S.. Universidad de Santiago de Compostela; EspañaFil: Botta, Pablo Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; ArgentinaFil: De la Calle, C.. Instituto de Ciencia de Materiales de Madrid; EspañaFil: Piñeiro, A.. Universidad de Santiago de Compostela; EspañaFil: Pardo, V.. Universidad de Santiago de Compostela; EspañaFil: Baldomir, D.. Universidad de Santiago de Compostela; EspañaFil: Alonso, J. A.. Instituto de Ciencia de Materiales de Madrid; Españ