Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The concept of “elite” frequently appears in public discussion and in specialized literature in social sciences. However, unlike what happens in this last field, in the media and through the daily informal exchanges, “elite” seems to have multiple meanings that distorts its original meaning. Therefore, it is precisely to step back in the timeline, to its origin. The concept means the way in which it has been problematized and what occurs with it in the contemporary debate.

En la Odontología, así como en otras disciplinas del área de la salud, las radiografías son un apoyo de gran utilidad en el momento de hacer un diagnóstico y elaborar el plan de tratamiento adecuado, obteniendo con esto resultados plenamente favorables; sin perder de vista y tomando en cuenta, que las radiaciones por más mínimas que estas sean, siempre son nocivas para nuestro organismo, por lo que resulta importante protegerse de ellas por los medios que estén a nuestro alcance, ofreciéndonos seguridad y confianza en el manejo de los aparatos de rayos X. En el presente trabajo tomamos como base la construcción de una protección con las laminillas de plomo, material nocivo de desecho, pero que aplicado en las paredes del gabinete de rayos X protege de las radiaciones.

During the rainy season in the Mexican state of Tabasco there are landslides over the rivers that flow through the state, being some of the most affected area the one called ¨La Manga¨. This paper presents the stability analysis evolution of the side slope due to changes over the soils saturation that forms it, going from safety condition to failure condition. In order to achieve this goal, a campaign of field exploration and laboratory tests was first carried out, which allowed obtaining the geometric characteristics of the side slope, as well as the soil properties that constitutes it. From the undisturbed samples obtained in the exploration field, triaxial compression tests were carried out, varying only the degree of saturation of the soil. With the information obtained and through the GeoSlope 2012 software, stability analyses were performed varying only the degree of saturation. The results show that as the degree of saturation increases, the stability of the board decrease. It was found that exceeding 70% degree of saturation implies a slip hazard condition. Therefore, the monitoring of the soil degree of saturation that constitutes side slopes allows to anticipate its failure and, consequently, makes it possible to establish prevention actions.

This work presents from the relationship of the social thing that the professors and directors construct in the Technical School Council; the construction of meanings that through interaction they share; so he asks himself; What are the symbols that occur in the interactions that give meaning to the collegiate of teachers and managers? What are the images that are described in the collegiate performance and the meaning they represent in the behavior of the group? The objective; interpret the production of meaning that is generated in the images of collegiate interaction that describe the meaning of the actions of teachers and managers in the School Technical Council. The defined focus of the study of the life of human groups and their behavior based on the theoretical perspective of social interaction, from the conception of meaning that arises as a consequence of the collegiality that each one maintains with the other, and that these modify through the interpretation of social production in situ, this process guides the social research methodology under the explanatory approach of the grounded theory, the theoretical sampling as a tool for the collection of successive data, starting with open codes on the data collected to determine new phenomena for its analysis, the results are foundations for successive research processes. As result we have that the meanings in the collegial interaction of professors and managers is based on the dynamic interconnection where the symbols that emerge from the interactive acts, are an expressive endowment in a framework of what the creation of own norms of the context supposes. "Performances", the actors through the symbols that emerge from the interactive acts are producing an expressive endowment of these cultural scenes.

The aim of this work is to relate the present bias (PB) with financial sources choice and productive variables of a group of milk producers in Hermosillo, Sonora. A sample of 53 milk producers (8 women and 45 men) with an age range of 29 to 73 years was intentionally selected. Through a socio-economic, productive and financial questionnaire and a choice test, it was found that: (a) the 51% of the producers choose informal sources, of which 72% presented PB; (b) a total milk production of 7,128 liters per day was registered, where 59% of the volume produced corresponded to PB producers; and (c) statistically significant differences were found between the PB and the type of financial source, but not between PB and production. The results in the present investigation not only reflect the high prevalence of PB in the producers, but also have inconsistency in their preferences, which may affect the development of the production unit.

In this paper, experimental stress-strain curves of tensional and compressional tests carried out in Mexico for two bamboo species (Guadua Angustifolia Kunth and Bambusa Oldhamii) as wells as a comparison with those obtained in Ecuador and Colombia, are evaluated. For the Guadua Angustifolia Kunth, similar curve shapes for Mexican, Colombian and Ecuadorean bamboos were observed. This, in despite of variations in the test conditions, physic and geometric specimen properties, and original specimen position in the bamboo culm. Next, through a least square analysis, characteristic equations for these stress-strain curves were obtained. Bambusa Oldhamii species always shown the higher tensional and compressional strengths, 56.1 MPa and 273.3 MPa. Stress-strain curves for theses bamboo species were compared with that of unreinforced concrete. By considering the high strength and ductility capacity, the bamboo has a better behavior under axial stress than the unreinforced concrete and could be used for the building construction.

In base to a journalistic research on dailies from Chiapas, epigrams and different kind of verses are commented in order to demonstrate how the social and political events of the Maderista revolution (1910-1911) influenced the field of literary creation. As long as it identifies authors, the journals where these ones were published and their political networking, this article contributes to the study of the relationship between literature and politics during the first half of the twentieth century.

After reading the Letter to the Editor of Barboza-Meca "Are scientific publications important in medical students?", Published in this journal, it is necessary to issue some considerations in this regard. Draws attention to how the author raises the need for standards for the selection of researchers, thus questioning the relevance of including undergraduate students in the process of scientific publication. At the same time, it casts doubt on the role of student research in the solution of the problems that afflict society and individual health.

El fanfiction es una práctica letrada vernácula con importantes potencialidades formativas en el que se ponen en funcionamiento competencias lectoras, escritoras y literarias. Este trabajo tiene por objeto explorar el ámbito del fanfiction hispanófono y, a la postre, ofrecer algunas ideas para “domesticar” estas actividades desarrolladas en espacios de afinidad. Para ello, haciendo uso de una metodología etnográfica participativa, presentamos un estudio de caso de PARTICIPANTE, reconocida fanfictioner en España y Latinoamérica. Finalmente, estos resultados se han cristalizado en una serie de propuestas de aula para el aula de lenguas, primeras y/o extranjeras. Con ellas, esperamos motivar estudios y experiencias que las desplieguen y desarrollen.