Una sociedad cautiva. El impacto sociopolítico del cautiverio en la frontera entre el reino de Granada y el Magreb a principios del siglo xvi

Drawing on different primary sources this article analyses the impact of captivity on the configuration of the frontier society between the south-eastern region of the Iberian Peninsula and the Maghreb at the beginning of the sixteenth century. More specifically, it shows how a wide array of actors (from the crown to humble citizens, from military authorities to members of minorities, etcetera) made use of this phenomenon as a means to negotiatetheir power position in the social fabric of this Mediterranean frontier. In this manner, captivity appears as a key factor in the internal configuration of this society, rather than as a mere expression of the clash of civilizations that use to characterise the Mediterranean world of the Early Modern period

National identification as a function of perceived social control: A subjective group dynamics analysis

Based on subjective group dynamics theory (SGDT; e.g., Marques, Paez, & Abrams, 1998), we examine the effects of a group’s ability to effectively control its deviant members on participants’ ingroup identification. In Studies 1 and 2 (N = 79 and N = 173) participants were informed that the ingroup (vs. outgroup) dealt with deviant occurrences in an effective (vs. ineffective) way. As predicted, induced ingroup effectiveness generated higher ingroup identification, trust in the ingroup’s social control system, and more positive emotional climate, whereas induced ingroup ineffectiveness generated more negative emotional climate or anomie and weaker ingroup identification as compared to outgroup conditions. In Study 3 (N = 115), perceived ingroup effectiveness predicted ingroup identification, via emotional climate, ingroup anomie, confidence in the group’s social control system, and ingroup emotions. We discuss the results in light of SGDT and the role of perceived ingroup social control in promoting ingroup identification.This work is part of project EXCL/MHCPSO/ 0800/2012, which was supported by the Portuguese Foundation for Science and Technology (FCT). The first author is the principal investigator, and the second and third authors are, respectively, a member of the research team and a consultant on that project

Transportation infrastructure impacts on firm location: the effect of a new metro line in the suburbs of Madrid

Firm location patterns emerge as a consequence of multiple factors, including firm considerations, labor force availability, market opportunities, and transportation costs. Many of these factors are influenced by changes in accessibility wrought by new transportation infrastructure. In this paper we use spatial statistical techniques and a micro-level data base to evaluate the effects of Madrid?s metro line 12 (known as Metrosur) expansion on business location patterns. The case study is the municipality of Alcorcon, which is served by the new metro line since 2003. Specifically, we explore the location patterns by different industry sectors, to evaluate if the new metro line has encouraged the emergence of a ?Metrosur spatial economy?. Our results indicate that the pattern of economic activity location is related to urban accessibility and that agglomeration, through economies of scale, also plays an important role. The results presented in this paper provide evidence useful to inform efficient transportation, urban, and regional economic planning

Analysis of house prices to assess economic impacts of new public transport infrastructure: Madrid metro line 12.

Transportation infrastructure is known to affect the value of real estate property by virtue of changes in accessibility. The impact of transportation facilities is highly localized as well, and it is possible that spillover effects result from the capitalization of accessibility. The objective of this study was to review the theoretical background related to spatial hedonic models and the opportunities that they provided to evaluate the effect of new transportation infrastructure. An empirical case study is presented: the Madrid Metro Line 12, known as Metrosur, in the region of Madrid, Spain. The effect of proximity to metro stations on housing prices was evaluated. The analysis took into account a host of variables, including structure, location, and neighborhood and made use of three modeling approaches: linear regression estimation with ordinary least squares, spatial error, and spatial lag. The results indicated that better accessibility to Metrosur stations had a positive impact on real estate values and that the effect was marked in cases in which a house was for sale. The results also showed the presence of submarkets, which were well defined by geographic boundaries, and transport fares, which implied that the economic benefits differed across municipalities

Assessment of the influence due to a new metro line on the promotion of business activities around the stations: A case study of MetroSur in Madrid

The construction of a new public transportation infrastructure in a metropolitan area has a great impact, in many different ways, on the neighborhoods surrounding the stations. The objective of this paper is to evaluate the influence that the construction of a new metro line has on the promotion of businesses (shops, offices and so on) near the stations. To that end, we have analyzed, as a case study, the construction of the new metro line, “Metrosur”, in Alcorcon, a municipality at the south east of Madrid. The analysis was carried out through two different approaches: on one hand, we used a “point pattern analysis” to estimate kernel surfaces to analyze the variation in the density of business activities during a period of ten years, from the conception of the line to four years after the line entered into operation. In the second approach, we calibrated a binary logit model to assess the probability that each location has to hold any economic activity taking into account its distance to Metrosur and other location characteristics. We found that the distance to the stations positively impacts the location of a business. Moreover, the paper demonstrates that agglomeration plays an important role in the collocation of economic activities

Social and psycho-political basis of prejudice towards trans people among people from Córdoba/Argentina

El prejuicio hacia personas trans se encuentra relativamente poco explorado en comparación a otros prejuicios sexuales y de género. El presente estudio analiza factores explicativos de las actitudes negativas hacia personas trans en ciudadanos/as de Córdoba, Argentina, a partir de la Escala de Actitudes Negativas hacia personas Trans (EANT). Se aplicó un cuestionario a una muestra no aleatoria estratificada (N = 410) de población general.A partir de correlaciones y análisis de path, se replican resultados obtenidos por estudios en otros contextos, destacándose las contribuciones de edad, nivel socioeconómico, intensidad religiosa, variables psicopolíticas (Autoritarismo de Ala Derecha [RWA], Orientación hacia la Dominancia Social [SDO] - subfactor dominancia grupal), y psicosociales (sexismo y prejuicio sexual hacia gays y lesbianas, indagado con la Escala de Actitudes hacia Gays y Lesbianas [ATGL]). El modelo de path propuesto, explicó el 65% de la varianza total de la EANT, y presentó buenos ajustes globales. El artículo discute también las relaciones entre la EANT y ATGLThe prejudice toward trans people remains relatively unexplored compared to other sexual and gender prejudices. This study analyzes the explanatory factors of prejudice towards trans people in Cordoba, Argentina, through the Negative Attitudes toward Trans Scale (EANT, in Spanish). We applied a questionnaire to a stratified non-random sample (N = 410) of general population, to explore an explanatory model of EANT. From correlations and path analysis, we replicated results from studies in other contexts, highlighting the contributions of age, socioeconomic status, religiousness, psycho-political (Right Wing Authoritarism [RWA], Social Dominance Orientation [SDO] - group dominance) and psycho-social prejudice measures (ambivalent sexism and attitudes toward gays and lesbians, ATGL). The proposed model explained 65% of the total variance of the EANT and reported good global settings. The paper also discusses the relationship between EANT and ATGL.Fil: Paez, José. Universidad Nacional de Córdoba. Facultad de Psicología; ArgentinaFil: Rabbia, Hugo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones y Estudio sobre Cultura y Sociedad. Centro de Investigaciones de la Facultad de Psicología - Grupo Vinculado CIPSI; ArgentinaFil: Hevia, Guillermo. Universidad Nacional de Córdoba. Facultad de Psicología; ArgentinaFil: Pesci, Florencia. Universidad Nacional de Córdoba. Facultad de Psicología; Argentin

Simulación de Tareas Aperiódicas y Esporádicas de Tiempo Real mediante un Modelo de Eventos Discretos

Este trabajo presenta una extensión a un modelo de eventos discretos para el diseño de simuladores de Sistemas de Tiempo Real con tareas periódicas, incorporando tareas de tipo esporádico y aperiódico. Además, se estudia el soporte para jitter y offset. El modelo es diseñado empleando la técnica de grafo de eventos, y se ajusta a los sistemas dinámicos discretos como lo son los Sistemas de Tiempo Real. En la actualidad, el uso de simuladores para realizar comprobaciones de algoritmos, modelos, técnicas y para evaluar métricas de rendimiento, es una práctica extendida e importante en la disciplina.Fil: Paez, Francisco Ezequiel. Universidad Nacional de la Patagonia; Argentina;Fil: Urriza, José M.. Universidad Nacional de la Patagonia; Argentina;Fil: Orozco, Javier Dario. Universidad Nacional del Sur; Argentina

Relationship between fibre orientation and tensile strength of natural collagen membranes for heart valve leaflets

Heart valve prostheses are used to replace native heart valves which that are damaged because of congenital diseases or due to ageing. Biological prostheses made of bovine pericardium are similar to native valves and do not require any anticoagulation treatment, but are less durable than mechanical prostheses and usually fail by tearing. Researches are oriented in improving the resistance and durability of biological heart valve prostheses in order to increase their life expectancy. To understand the mechanical behaviour of bovine pericardium and relate it to its microstructure (mainly collagen fibres concentration and orientation) uniaxial tensile tests have been performed on a model material made of collagen fibres. Small Angle Light Scattering (SALS) has been also used to characterize the microstructure without damaging the material. Results with the model material allowed us to obtain the orientation of the fibres, relating the microstructure to mechanical performanc

COORDINACIÓN DE PROTECCIONES ELÉCTRICAS dE TRANSFORMADORES DE UNA PLANTA CEMENTERA

Las protecciones eléctricas resguardan a los equiposy procesos de fallas de energía internas comoexternas. Una industria cementera donde ocurrencambios repentinos de energía por arranque de equiposde gran dimensión debe tener una coordinaciónapropiada que pueda distinguir entre arranques deequipos y una falla real del sistema eléctrico. Através del análisis de mediciones eléctricas en lospuntos de interés, se evalúan los valores máximosque alcanzan los equipos durante su arranque y losvalores promedio de operación continua. Utilizandoel software para coordinación eléctrica ETAP,se grafican las curvas de disparo configuradas actualmenteen los equipos para analizarlas contra losvalores de operación de la planta. Se modifican losparámetros de configuración de los dispositivos deprotección para optimizar el monitoreo de las curvasde disparo. Se presentan las mejoras de esta nuevadisposición al optimizar el tiempo de reacción de losdispositivos ante fallas reales

ANÁLISIS DE PRODUCCIÓN DE GUAYABA EN CALVILLO, AGUASCALIENTES, 2017

De acuerdo el Servicio de Alimentación Agroalimentaria y Pesquera (SIAP, 2017) en México el cultivo de la guayaba es uno de los trece frutales de mayor importancia, con aproximadamente 294,208.25 toneladas. La mayor parte de la producción se destina al mercado interno para el consumo en fresco. En México es una fruta que se ha cultivado por más de un siglo, el estado de Michoacán es el principal productor, posteriormente sigue Aguascalientes, en tercer sitio se encuentra Zacatecas, la cuarta posición es para el estado de México y el quinto lugar para Jalisco, estos 5 estados concentran el aproximadamente el 97.87% de la producción nacional. La herramienta metodológica de la que se hace uso para el análisis de la rentabilidad es la Matriz de Análisis de Política (MAP), con la finalidad de conocer los costos e ingresos y así cuantificar la rentabilidad de la producción de guayaba en Calvillo estado de Aguascalientes. Los resultados obtenidos revelan que para los distintos tipos de producción de la región es rentable para el ciclo productivo 2017, generando una derrama económica importante en la región a consecuencia de que el cultivo es muy demandante de mano de obra por la naturaleza del proceso de obtención del producto, generando aproximadamente 1,095,339.00 jornales dedicados a esta actividad, así mismo, se detectó que alcanza sus precios mas altos de comercialización en las principales centrales de abasto en Diciembre debido a la gran demanda que genera por las celebraciones de fin de año.Recursos propio