Browsing by Subject "Network analysis"

Now showing 1 - 7 of 7
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    Análisis espacial de la ordenación territorial en áreas rurales de baja densidad demográfica: El caso de Extremadura
    (2018-03-02) Nieto Masot, Ana; Engelmo Moriche, Ángela; Cárdenas Alonso, Gema
    La ordenación del territorio en partenariados rurales-urbanos es una de las cuestiones más en boga actualmente. El objetivo que con ellos se persigue es la organización óptima de los recursos y equipamientos en espacios rurales en crisis y con graves problemas demográficos y socioeconómicos. La región que se analiza en este trabajo, Extremadura, es un espacio predominantemente rural en el que existen desigualdades en sus realidades sociales, económicas y demográficas, agravadas en algunos espacios y que no son resueltas a través de las diferentes comarcalizaciones establecidas en su territorio. Así, en este estudio, se revisan las diferentes divisiones comarcales de la región extremeña con el fin de detectar su grado de solapamiento y de localizar, aplicando una metodología basada en el Análisis de Componentes Principales, los núcleos que están ejerciendo en la actualidad como cabecera comarcal y que podrían actuar como centros de una futura y única organización territorial. Para comprobar el nuevo diseño, se aplican modelos de accesibilidad y gravedad a través de Sistemas de Información Geográfica y softwares estadísticos.
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    Estructura interindustrial y desarrollo económico. Un análisis desde las perspectivas de redes e input-output
    (2016-09-06) Noguera-Méndez, Pedro; López-Martínez, María; Semitiel-García, María; Economía Aplicada
    This paper studies inter-industry structures at national level by applying traditional input-output measures and also network analysis. The main objective is to attain a better understanding of economic processes by focusing on inter-industrial structures as a main explanatory factor of the observed international disparities in development. This study shows the existence of a fundamental inter-industrial structure, common to all countries. When comparing groups of countries, there are also structural differences that are in accordance with differences in development levels, in industrial specialization and in the structural position of some industrial sectors. Those differences have an impact on the countries’ unequal development processes. This study shows that both methodologies, input-output and network analyses, are complementary and allow to attain more advanced explanations of the processes of development. By applying network theory it is possible to improve our knowledge on structural differences and its relation with economic growth and development.
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    Fishers’ participation in small-scale fisheries. A structural analysis of the Cabo de Palos-Islas Hormigas MPA, Spain
    (Elsevier, 2019-03) Noguera-Méndez, Pedro; Semitiel-García, María; Economía Aplicada
    The role of traditional fishing institutions appears, paradoxically, to be waning despite scientific support and rhetoric about the value of fishers’ involvement in local marine management. Relational data of fishers have been used in this paper as a lens through which to explore the status of their participation in Marine Protected Area (MPA) management and to identify structural and contextual barriers to participation. Fieldwork was carried out during 2013–2015 in Cabo de Palos-Islas Hormigas MPA (CPH-MPA) using a mixed method approach involving the collection and analysis of data from institutional surveys and community meetings. The analysis shows that the fishers’ self-perception of having low influence in decision-making is consistent with the perception towards fishers of the wider social system. Several barriers and constraints to participation in CPH-MPA management are identified. The inefficient structure of the information exchange network further explained fishers’ feelings of distrust and marginalisation regarding decision-making. Understanding how structural barriers make it difficult to set in motion a collective learning process – necessary for an efficient decision-making process – breaks new ground for the design of interventions. Recommendations include clarifying the scope for participation in an appropriate institutional setting and careful consideration of the space in which dialogue takes place in order to integrate diverse knowledge and to acknowledge differential power relations.
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    Metodología para una cartografía de vulnerabilidad del territorio frente al riesgo de inundación relacionado con los sistemas de socorro y asistencia. Aplicación al área inundable del Bajo Guadalhorce (2016)
    (2018-03-05) Sortino Barrionuevo, Juan Francisco; Perles Roselló, María Jesús
    El objetivo principal de esta comunicación es desarrollar una cartografía de evaluación de vulnerabilidad de los elementos expuesto frente al peligro de inundación, en concreto lo referente a los sistemas de socorro y asistencia con los que se cuenta, para que todos los organismos y entidades competente puedan contar con esta herramienta para la toma de decisiones y el desarrollo de sus Planes de Actuación de Ámbito Local. La metodología de trabajo se basa en un análisis de redes que permite elaborar mapas de isócronas de tiempos de respuestas, para los diferentes agentes implicados en las labores de socorro y asistencia, bajo dos escenarios (sin episodios de inundación y con episodios de inundación), y establece una comparativa entre las diferentes situaciones. Los resultados obtenidos son una serie de cartografías vinculadas al análisis de los sistemas de socorro y asistencia que permiten analizar su eficacia durante la catástrofe. Los documentos cartográficos son útiles como herramienta de apoyo a la decisión en la fase de gestión de emergencias, y permiten sugerencias de mejora en la gestión del riesgo de inundación, a través del tratamiento aplicado de diferentes aspectos vinculados a la vulnerabilidad
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    The Centrality of Doubting and Checking in the Network Structure of Obsessive-Compulsive Symptom Dimensions in Youth
    (Elsevier, 2020) Cervin, Matti; Perrin, Sean; Olsson, Elin; Aspvall , Kristina; Geller, Daniel A.; Wilhelm, Sabine; McGuire, Joseph; Lázaro, Luisa; Martínez-González, Agustin E.; Barcaccia, Barbara; Pozza, Andrea; Goodman, Wayne K.; Murphy, Tanya K.; Seçer, Ismail; Piqueras, José A.; Rodríguez Jiménez, Tiscar; Godoy, Antonio; Rosa-Alcázar, Ana Isabel; Rosa-Alcázar, Ángel; Ruiz-García, Beatriz M.; Storch, Eric A.; Mataix-Cols, David; Personalidad, Evaluación y Tratamiento Psicológicos
    Objective: Obsessive-compulsive disorder (OCD) is a heterogeneous condition with well- established symptom dimensions across the lifespan. The objective of the present study was to use network analysis to investigate the internal structure and central features of these dimensions in unselected schoolchildren and in children with OCD.Method: We estimated the network structure of OCD symptom dimensions in 6,991 schoolchildren and 704 children diagnosed with OCD from 18 sites across 6 countries. All participants completed the Obsessive-Compulsive Inventory—Child Version. Results: In both the school-based and clinic-based samples, the OCD dimensions formed an interconnected network with doubting/checking emerging as a highly central node, that is, exerting strong influence over other symptom dimensions in the network. The centrality of the doubting/ checking dimension was consistent across countries, sexes, age groups, clinical status, and tic disorder comorbidity. Network differences were observed for age and sex in the school-based but not the clinic-based samples. Conclusion: The centrality of doubting/checking in the network structure of childhood OCD adds to classic and recent conceptualizations of the disorder in which the important role of doubt in disorder severity and maintenance is highlighted. The present results suggest that doubting/ checking is a potentially important target for further research into the etiology and treatment of childhood OCD.
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    The Embeddedness of the Agro-Food System in the Spanish Interindustrial Structure
    (SAGE Publications, 2011-01-06) Noguera-Méndez, Pedro; Semitiel-García, María; Economía Aplicada
    The agro-food system (AFS) is an integrating component of the networks behind interindustrial systems. This implies that the structure of AFSs affects and is affected by the characteristics and evolution of the more complex networks in which they are embedded. This article uses national and regional input—output data to analyze the network structure of the Spanish interindustry system for the period 1980— 2000. Network theory (NT) and social network analysis (SNA) have been applied to examine the structural position and evolution of the AFS in the whole interindustrial system. Following a systemic view, it is stated that the Spanish interindustry network follows a hierarchical topology, in which a core and a periphery can be identified. The AFS is a cohesive module occupying a peripheral position in the interindustrial structure. Those findings are very relevant from a policy perspective, as it is essential to have a deep knowledge of the structure of a system before acting on it. According to the dynamics of the analyzed national and regional AFSs, actions would imply coordination with policies focused on core sectors, mainly business services, trade and hotels and restaurants, and on sectors belonging to other production systems.
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    The structure of inter-industry systems and the diffusion of innovations: The case of Spain
    (Elsevier, 2012-05-26) Noguera-Méndez, Pedro; Semitiel-García, María; Economía Aplicada