991 research outputs found

    The effects of news authorship, exclusiveness and media type in readers’ paying intent for online news: An experimental study

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    This study explores how news authorship, exclusiveness, and media type affect readers’ paying intent for digital contents. A web-based experiment involving 602 Spanish adults reveals that authorship (prestigious journalist), exclusiveness, and media type (legacy media and new media over unknown media) increase readers’ economic value assessments of online news. In addition, our results show that the interaction between authorship and media type is affected by the level of news exclusiveness: when an online article is written by a prestigious journalist and is exclusive, readers’ heuristic assessments of its economic value are biased toward new media over legacy ones, and thus privilege the former and penalize the latter in their pecuniary evaluations. These results might point to a change in readers’ consumption patterns, favoring the brand values, and news production processes of new media over legacy ones

    Santuarios urbanos y el derecho al tránsito: migrantes en tránsito por Milán Urban sanctuaries and the right to the transit: migrants in transit through Milan

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    This paper focuses on the policy implemented by the city of Milan to deal with the migrants crossing the city en route to central Europe from 2013, mainly from Syria and the Horn of Africa. To understand the city\u2019s response to this wave of migration, a qualitative case study was conducted that included interviews with volunteers, public employees, legal advisers and refugees. Milan\u2019s initiative is discussed in the context of the expansion of sanctuary city policies in Europe during the period of the \u201cmigration crisis\u201d. In particular, we will see that the sistema profughi was from 2013 to 2017 an alternative to national and international policies on transit migration in terms of law, narrative and implementation, in supporting the right to the transit and challenging European and Italian policies on the matter.Este art\uedculo se centra en la pol\uedtica que implement\uf3 la ciudad de Mil\ue1n para lidiar con el aluvi\uf3n de migrantes que cruzaron la ciudad de camino hacia Europa Central a partir de 2013, procedentes principalmente de Siria y el Cuerno de \uc1frica. Para entender la respuesta de la ciudad a esta oleada migratoria, se llev\uf3 a cabo un estudio de caso cualitativo con entrevistas a voluntarios, empleados p\ufablicos, asesores jur\ueddicos y refugiados. Como resultado, se discute la actuaci\uf3n de Mil\ue1n en el marco de la expansi\uf3n de las pol\uedticas de las ciudades santuario en Europa durante el per\uedodo de la \uabcrisis migratoria\ubb. En concreto, veremos que esta actuaci\uf3n \u2013el sistema profughi (2013-2017)\u2013 constituy\uf3 una alternativa a las pol\uedticas nacionales e internacionales sobre migraci\uf3n en tr\ue1nsito, en t\ue9rminos de derecho, relato e implementaci\uf3n, al apoyar el derecho al tr\ue1nsito y cuestionar las pol\uedticas europeas e italianas sobre la materia

    Mating system in a natural population of Theobroma grandiflorum (Willd. ex Spreng.) Schum., by microsatellite markers.

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    The aim of this research was to study the mating system of a natural population of Theobroma grandiflorum (cupuassu) from Nova Ipixuna, Pará state, using microsatellite markers. Eight polymorphic microsatellite loci were analyzed in eight families, each represented by 10 six-month old seedlings derived from open-pollinated pods. The estimation for the multilocus outcrossing rate (tm=1.0)andindividualoutcrossingrate(tm= 1.0) and individual outcrossing rate (t= 1.0) for this population suggests that T. grandiflorum may be a perfect outbreeding (allogamous) species. Likewise, for the studied population the estimate for single locus outcrossing rate (ts)waselevated(0.946),butlowerthants) was elevated (0.946), but lower than tm, confirming the likely outcrossing character of the species and suggesting the occurrence of 5.4% biparental inbreeding rate (tm−tm-ts). The estimation of genetic divergence (FST)betweenallelicfrequenciesinovulesandpollenrevealedadeviationfromrandommatingin75FST) between allelic frequencies in ovules and pollen revealed a deviation from random mating in 75% of the evaluated loci. Likewise, the estimate of correlation of paternity (rp= 0.930) and the mean coefficient of co-ancestrality within families ($?xy= 0.501) indicated that the outcrossings were predominantly correlated, and the offspring were full-sibs. These results suggested that for this particular population of T. grandiflorum, the sampling strategy for genetic conservation and breeding should adopt specific models for families derived from correlated outcrossing (full-sibs) and not the ones usually adopted in classic outcrossing species breeding programs (half-sibs)

    Impacte econòmic de la figitalització i la convergéncia en el sector audiovisual a Espanya

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    In this article, we will analyse the effects of digitalisation and convergence, both in the world of television and in the evolution of business models for firms in this sector. We will also refer to the convergence of business and technology in new intermediaries in the audiovisual market. Later on we will describe the public’s increasingly important role and, finally, we will examine the possible scenarios for Spain’s audiovisual sector in the second decade of this century

    La calidad de la oferta televisiva en el mercado español: Las percepciones del público

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    El mercado de la televisión en España ha multiplicado su oferta de contenidos audiovisuales en los últimos años. El objeto de la investigación es la relación entre este hecho y la percepción de calidad de los servicios televisivos recibidos por parte del público. La metodología aplicada incluye una encuesta de ámbito nacional. Los resultados confirman que el nivel de consumo o la abundancia de oferta no se corresponden con un alto índice de satisfacción del público; que la percepción de calidad es menor entre las personas de mayor nivel educativo; que las cadenas generalistas no presentan de diferencias significativas en la valoración por parte de la audiencia; y, finalmente, que buena parte del público muestra preocupación con los contenidos televisivos y sus efectos en la sociedad

    Designing prevention programmes to reduce incidence of dementia: prospective cohort study of modifiable risk factors

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    Objective To estimate the percentage reduction in incidence of dementia that would be obtained if specific risk factors were eliminated

    A nanoporous surface is essential for glomerular podocyte differentiation in three-dimensional culture.

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    Although it is well recognized that cell-matrix interactions are based on both molecular and geometrical characteristics, the relationship between specific cell types and the three-dimensional morphology of the surface to which they are attached is poorly understood. This is particularly true for glomerular podocytes - the gatekeepers of glomerular filtration - which completely enwrap the glomerular basement membrane with their primary and secondary ramifications. Nanotechnologies produce biocompatible materials which offer the possibility to build substrates which differ only by topology in order to mimic the spatial organization of diverse basement membranes. With this in mind, we produced and utilized rough and porous surfaces obtained from silicon to analyze the behavior of two diverse ramified cells: glomerular podocytes and a neuronal cell line used as a control. Proper differentiation and development of ramifications of both cell types was largely influenced by topographical characteristics. Confirming previous data, the neuronal cell line acquired features of maturation on rough nanosurfaces. In contrast, podocytes developed and matured preferentially on nanoporous surfaces provided with grooves, as shown by the organization of the actin cytoskeleton stress fibers and the proper development of vinculin-positive focal adhesions. On the basis of these findings, we suggest that in vitro studies regarding podocyte attachment to the glomerular basement membrane should take into account the geometrical properties of the surface on which the tests are conducted because physiological cellular activity depends on the three-dimensional microenvironment
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