Adoption of mobile internet services in Chile: an exploratory study

The main objective of this study is to explore differences on the adoption of mobile Internet services on a sample of Chilean users. A survey based on constructs of individual acceptance models is the tool used to measure the acceptance of mobile Internet of the respondents. We used Kruskal–Wallis one-way analysis of variance to compare differences between groups. In summary, results show that some constructs of users’ behaviour of acceptance of mobile Internetservices manifest statistically significant differences associated with gender, age and experienc

Gender influence in perception and adoption of e-learning platforms

The main objective of this study is to examine gender differences and the adoption of technology in higher education students. TAM model is the tool used to measure the acceptance and use of e-learning of the respondents. We used Partial Least Squares (PLS), specifically, the PLS multi-group analysis was used to compare differences between groups. In summary, results show that students’ behavior of acceptance of elearning technology do not manifest statistically significant differences between women and men

Measurement and analysis of the acoustics of the Roman theatre of Segobriga (Spain)

Segobriga (Cuenca) was the capital of the Celtiberia region. The specular gypsum of its mines, used as glass in windows, was exported across the whole Empire through the port of Cartago Nova (Cartagena). Its Roman theatre has one of the best conserved cavea of Hispania, although there is no scaenae frons. Its construction dates back to the year 79 A.D. In this work, experimental results and analysis are presented of impulse responses and of the values of the monaural and binaural acoustic parameters recorded in situ. These results correspond to the source-receiver combinations of three positions of the source, located in the proscaenium(2), and in the orchestra (1), and of 19 reception points, distributed across the cavea, the proedria, and the proscaenium. This theatre features as part of one of the study cases of a research project that aims to evaluate and revalue the acoustics of the principal Roman theatres of Spain

Reverberation perception in Spanish cathedrals

Listening tests based on paired comparisons have been employed to investigate the subjective perception of the acoustic environment in highly reverberant large spaces. Seven cathedrals in the southern half of Spain have been included in the survey, thereby covering a wide range of reverberation-time values from 4.32 s in Murcia cathedral to 8.96 s in Cadiz cathedral at mid-frequencies. These cathedrals present a common architectural typology, known as the "Spanish style", which allows similar source-receiver points to be selected when comparisons are made between two different cathedrals. The tests were carried out in the listening room of the Acoustics Laboratory of the Applied Physics II Department of the School of Architecture of the University of Seville. Several types of anechoic sound signals (choral pieces, extracts of Baroque instrumental music, and a speech) were auralised with the impulse responses measured in the cathedrals to be used in the tests. Such auralisations were reproduced through headphones, thereby ensuring that all audio signals were perceived at the same level during each test. The results indicated the existence of a threshold, whose value depends on the type of stimulus, from which the objective reverberation differences are subjectively remain almost indistinguishable to the listene

Characteristic function of impulse responses in churches

The tool presented enables the sound behaviour of a room to be objectified on the basis of the representation of the characteristic function (CF) of said room.In this paper, we study characteristic functions, defined from the impulsive responses measured at different points in the room, that are obtained in churchesand cathedrals. These CFs show a variation that correlates with the distance from the point of measurement and the source. An analysis is carried out on the relationship between this variation with those acoustic parameters that depend on the distance to the source: C50, C80,and G. In addition, the differentiating features between these types of spaces are shown,therebyallowing the characteristic function to offer an overall assessment of the room, which in turnenables the classification of similar sound space

Comunicación y Salud en América Latina : contribuciones al campo

Los objetivos de esta compilación son académicos e institucionales. Apuntan al fortalecimiento y visibilidad del campo Comunicación y Salud, del Grupo de Trabajo (GT) en Comunicación y Salud de la Asociación Latinoamericana de Investigadores en Comunicación (ALAIC) y de las relaciones entre los y las investigadores de la región. A través de los distintos congresos -habiendo sido convocados para esta publicación a participantes de los Congresos XI (Montevideo 2012), XII (Lima 2014), XIII (México 2016) y XIV (Costa Rica circularon en el GT diferentes actores, disputas teóricas y metodológicas, tecnologías, agendas públicas- políticas y ciudadanas, configuraciones de poder y construcciones de sentidos con el propósito de contribuir a la comprensión y consolidación del campo Comunicación y Salud, entendido este como un campo de múltiples dimensiones