Towards a new framework for domination

Dominating concepts constitute a cornerstone in Graph Theory. Part of the efforts in the field have been focused in finding different mathematical frameworks where domination notions naturally arise, providing new points of view about the matter. In this paper, we introduce one of these frameworks based in convexity. The main idea consists of defining a convexity in a graph, already used in image processing, for which the usual parameters of convexity are closely related to domination parameters. Moreover, the Helly number of this convexity may be viewed as a new domination parameter whose study would be of interest

Ecologies of learning, visual narratives and ethnography. Metholodogical notes about Universidad Rural Paulo Freire case.

In this paper we present some of the first methodological results of the R&D Project called "Ecologies of learning in multiple contexts: analysis of expanded education projects and citizenship configurations" funded by Minister of Economy and Competitiveness (Spain) . The interest of this project arises after considering that much of the individual and organizational learnings have been turning invisible in the different educational spaces. Therefore, our purpose is to study the different socio-educational mechanisms that individuals and organizations put into play in differents scenarios: schools, asociations, virtual academical contexts, etc. On this ocassion, we present some of the methodological aspects from a rural environment, especifically the study we are developing with ‘Universidad Rural Paulo Freire’ of the Ronda mountain range (onwards URPF). This organization is focused in the recovery of tradicional learnings that people used to have around the rural world. At the same time, they are settled in a critical perspective that connects their actions with approaches of sustainability, dignity, feminims, etc. The general objetives we consider for this project are the following: 1) To know life style of people in Ronda mountain range context. 2) To understand the configuration of URPF group and its impact in the territory. 3) To promote learning communities of practice with other organizations. In order to draw on these general porpuses and after an agreement process with the URPF collective, we designed methodologically the develop of life stories, visual narratives and a deep narrative ethnography.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Steiner distance and convexity in graphs

We use the Steiner distance to define a convexity in the vertex set of a graph, which has a nice behavior in the well-known class of HHD-free graphs. For this graph class, we prove that any Steiner tree of a vertex set is included into the geodesical convex hull of the set, which extends the well-known fact that the Euclidean convex hull contains at least one Steiner tree for any planar point set. We also characterize the graph class where Steiner convexity becomes a convex geometry, and provide a vertex set that allows us to rebuild any convex set, using convex hull operation, in any graph

Countries’ regulatory context and voluntary carbon disclosures

Purpose - This study analyses the relationship between countries’ regulatory context and voluntary carbon disclosures. To date, little attention has been paid to how specific climate change-related regulation influences companies’ climate change disclosures, especially voluntary carbon reporting. Design/methodology/approach – The New Institutional Sociology perspective has been adopted in order to examine the pressure of a country’s climate change regulation on voluntary carbon reporting. This research uses Tobit regression to analyse data from 2,183 companies in 12 countries that were invited to respond to the CDP questionnaire in 2015. Findings - The results show that countries’ specific climate change-related regulation does influence both the participation of its companies in the CDP, and their quality, as measured by the CDP disclosure score. Research limitations – The sample is restricted to 12 countries’ regulatory environment. Thus, caution should be exercised when generalizing the results to other institutional contexts. Practical implications – The results are of use to regulators and policymakers to better understand how specific climate change-related regulation influences voluntary carbon disclosure. Investors may also benefit from this research as it shows which institutional contexts present greater regulatory stringency, and how companies in more stringent environments take advantage of synergy to disclose high-quality carbon information. Social implications – By linking regulatory and voluntary reporting, this study sheds light on how companies use voluntary carbon reporting to adapt to social expectations generated in their institutional context. Originality/value – This is the first research that considers specific climate changerelated regulation in the study of voluntary carbon disclosures

DESARROLLO RURAL Y PALMA DE ACEITE. ESTUDIO DE CASO EN CAMPECHE, MÉXICO

El cultivo de palma de aceite ha crecido rápidamente en Campeche en los últimos años bajo un modelo de plantaciones campesinas a pequeña escala y se planifica convertir al estado en el principal productor de aceite de palma de México. El territorio de Campeche tiene un alto grado de conservación biológica y la expansión de la palma de aceite es motivo de controversia por sus impactos ambientales y sociales. Se presenta el estudio de caso del ejido Independencia para conocer desde la perspectiva de los campesinos los impactos generados por las plantaciones de palma de aceite. Los campesinos tienen una visión positiva sobre la palma de aceite como fuente de ingresos y empleo para los palmicultores, pero no perciben que haya mejorado las condiciones de vida de la comunidad. Los campesinos reconocen beneficios ambientales asociados a las plantaciones de palma de aceite como la reforestación de sus parcelas y la recuperación de la biodiversidad

Políticas de desarrollo rural en Uruguay: mesas de desarrollo rural, actores y territorio

En este trabajo, se presenta un esfuerzo de profundización en el tema del desarrollo institucional, para la canalización de demandas y reivindicaciones de sectores sociales rurales. Tiene como principal objetivo, reflexionar sobre el papel de las Mesas de Desarrollo Rural (MDRs) en la construcción de procesos de redistribución de poder en el ámbito rural y su contribución al fortalecimiento de la acción colectiva en el mundo agrario y rural nacional, como componentes fundamentales del desarrollo rural. En especial, cómo estos espacios pueden contribuir a la creación de una esfera pública de debate en los territorios rurales y la dirección de avance hacia procesos de redistribución de la representación y cambios en los arreglos de actores

Semelhanças, singularidades e exceções no quadro legislativo europeu de biocidas e sua implementação

Current legislation on biocides is the result of adapting to the particularities that characterize this type of products and of other legislative models that were previously applied in fields such as those of medicines or plant protection products. In addition, it has been necessary to find original solutions to address problems that do not appear in other industries. Although the legislative model has been the result of a carefully elaborated process, the legislation has envisaged the possibility that some substances or products which do not meet its requirements might be approved on an exceptional basis for justified reasons. The purpose of this article is to describe the European legal framework on biocides and its implementation with respect to other products from which it stems, as well as to point out the exceptions provided for in its implementation.La legislación actual sobre biocidas es el resultado de la adaptación a las particularidades que caracterizan a este tipo de productos, de otros modelos legislativos previamente aplicados en campos como los medicamentos o los fitosanitarios. Además, ha sido necesario encontrar soluciones originales para abordar problemas que no aparecen en otros sectores.Aunque el modelo legislativo ha sido el resultado de un proceso cuidadosamente elaborado, la legislación ha previsto la posibilidad de que, por causas motivadas, puedan aprobarse excepcionalmente algunas sustancias o productos que no cumplen los requisitos de la legislación.El objetivo de este artículo es describir el marco legislativo europeo de los biocidas así como su implementación respecto de otros productos de los cuales deriva su propia legislación, y señalar las excepciones previstas en su aplicación.A atual legislação sobre biocidas é o resultado da adaptação, às particularidades que caracterizam este tipo de produtos, de outros modelos legislativos anteriormente aplicados em áreas como a dos medicamentos ou dos produtos fitossanitários. Além disso, foi necessário encontrar soluções originais para resolver problemas que não se verificam em outros setores. Embora o modelo legislativo tenha sido o resultado de um processo cuidadosamente elaborado, a legislação previu a possibilidade de que, por razões fundamentadas, possam aprovarse excecionalmente algumas substâncias ou produtos que não cumpram os requisitos da legislação. O objetivo deste artigo é descrever o quadro legislativo europeu para os biocidas bem como a sua implementação, em relação a outros produtos de que deriva a sua própria legislação, e apontar as exceções previstas na sua aplicação

Impacto de la publicidad televisiva de productos para adelgazar en hombre y mujeres entre 25 y 35 años de la ciudad de Quito.

La presente investigación plantea analizar el impacto de la publicidad de productos adelgazantes en la teleaudiencia de Quito, específicamente en personas entre los 25 y 35 años. Dicho grupo de estudio presenta características en su ritmo de vida que resultan determinantes para sentirse y verse saludables. Las múltiples actividades en la vida profesional, el poco tiempo que resta para descansar y los estereotipos impuestos por la sociedad, son algunas de las particularidades que aprovecha la publicidad para aumentar el consumo de ciertos productos, cuyo común denominador es presentarse como una solución práctica

Nuevos datos sobre poblaciones silvestres de Brassica oleracea ensu límite de distribución occidental en la Península Ibérica

An exploration and collection mission for wild Brassica oleracea populations was carried out in spring and summer of2013. The aim of this collection was to expand the number of accessions of wild Brassica oleraceaavailable for basic andapplied research in plant breeding. In this paper we report a new population of wild Brassica oleraceain an unexploredcoastal area of Galicia, NW Iberian Peninsula. Details of population ecology and vegetation, soil, climate and geographicdata were recorded for this population. The “Endangered” threat category for the region is proposed, and actions for in situand ex situconservation are proposed. Seeds will be added to the germplasm collections of University of Santiago deCompostela and Misión Biológica de Galicia (CSIC) for further research on diverse aspects of the dynamics and ecophy-siology of the population along with characterization and evaluation of useful traits.En la primavera y el verano de 2013 se llevó a cabo un estudio que incluía la exploración y recolección de poblacionessilvestres de Brassica oleracea. El objetivo de esta colección era ampliar el número de muestras de germoplasma de estaespecie disponibles para la investigación básica y aplicada al fitomejoramiento. En este trabajo se presentan nuevos datossobre poblaciones de Brassica oleraceasilvestre en un área costera inexplorada de Galicia, en el noroeste de la PenínsulaIbérica. Detalles de la ecología de la población y la vegetación, el suelo, el clima y los datos geográficos se registraron paraesta población. Se propone la categoría de amenaza para la región, y las acciones para su correcta conservación in situ y exsitu. Las muestras de semillas se añadirán a las colecciones de germoplasma de la Universidad de Santiago de Compostelay de la Misión Biológica de Galicia (CSIC) para futuras investigaciones sobre diversos aspectos de la dinámica y la ecofi-siología de la población junto con la caracterización y evaluación de características útiles.S