980 resultados para Internal factors
Resumo:
Guidance and Diversity, for the majority of the European countries and North America , are related to the attention to children and young people with special necessities, that are attend in an educative institution and for those who are elaborated educative programs directed to obtain one better adaptation to the prevailing social system. In most of the cases is considered that the problematic of the special necessities is imputable to genetic or personal factors that only respond to internal factors to the individuals that display them avoiding the external factors that in some cases can be more decisive determinants at the time of the conductual manifestation. In this work is pleaded because the professionals of the Guidance, as much private or public scenes of the European countries, make more specific considerations at the time of taking care of children, young people and adults, as immigrants, coming of Latin America . In an ample sense one sets out to make Guidance in the Diversity more than Guidance for the Diversity under the conception of a Guidance for All which implies the elimination of the expression "special necessities", whose connotation in our countries is not most appropriate, and than it includes the idea of an Ethnic Guidance. Perhaps the best way of boarding of these conceptions is promoting a process of Guidance from the School and not only in the School.
Resumo:
Submarine gas hydrates are a major global reservoir of the potent greenhouse gas methane. Since current assessments of worldwide hydrate-bound carbon vary by one order of magnitude, new technical efforts are required for improved and accurate hydrate quantifications. Here we present hydrate abundances determined for surface sediments at the high-flux Batumi seep area in the southeastern Black Sea at 840 m water depth using state-of-the art autoclave technology. Pressure sediment cores of up to 2.65 m in length were recovered with an autoclave piston corer backed by conventional gravity cores. Quantitative core degassing yielded volumetric gas/bulk sediment ratios of up to 20.3 proving hydrate presence. The cores represented late glacial to Holocene hemipelagic sediments with the shallowest hydrates found at 90 cmbsf. Calculated methane concentrations in the different cores surpassed methane equilibrium concentrations in the two lowermost lithological Black Sea units sampled. The results indicated hydrate fractions of 5.2% of pore volume in the sapropelic Unit 2 and mean values of 21% pore volume in the lacustrine Unit 3. We calculate that the studied area of ~ 0.5 km**2 currently contains about 11.3 kt of methane bound in shallow hydrates. Episodic detachment and rafting of such hydrates is suggested by a rugged seafloor topography along with variable thicknesses in lithologies. We propose that sealing by hydrate precipitation in coarse-grained deposits and gas accumulation beneath induces detachment of hydrate/sediment chunks. Floating hydrates will rapidly transport methane into shallower waters and potentially to the sea-atmosphere boundary. In contrast, persistent in situ dissociation of shallow hydrates appears unlikely in the near future as deep water warming by about 1.6 °C and/or decrease in hydrostatic pressure corresponding to a sea level drop of about 130 m would be required. Because hydrate detachment should be primarily controlled by internal factors in this area and in similar hydrated settings, it serves as source of methane in shallow waters and the atmosphere which is mainly decoupled from external forcing.
Resumo:
Politicians, social scientists and general readers have noted in both Cuban and international academic forums and periodicals that the well-being enjoyed by the Cuban people in the 1980s has been seriously compromised since the economic crisis of the 1990s. Even for the most skeptical of observers it is clear that this worsening of conditions can be attributed not only to external factors, such as the breakup of the international socialist system, the tightening of the US blockade, and the worldwide economic crisis suffered by underdeveloped countries, but also to internal factors that have kept the country from taking full advantage of the human and material potential available on the island. Although Cuba is currently experiencing an economic recovery from the collapse in GDP in the mid 1990s following the collapse of its ties with the Socialist Bloc, it continues to maintain high import coefficients due to longstanding structural.
Resumo:
El sector ganadero está siendo gradualmente dominado por sistemas intensivos y especializados en los que los factores de producción están controlados y en los que los caracteres productivos son los criterios principales para la selección de especies y razas. Entretanto, muchos de los bienes y servicios que tradicionalmente suministraba el ganado, tales como los fertilizantes, la tracción animal o materias primas para la elaboración vestimenta y calzado están siendo reemplazados por productos industriales. Como consecuencia de ambos cambios, las razas seleccionadas intensivamente, las cuales están estrechamente ligadas a sistemas agrícolas de alta producción y altos insumos, han desplazado a muchas razas autóctonas, en las que la selección prácticamente ha cesado o es muy poco intensa. Actualmente existe una mayor conciencia social sobre la situación de las razas autóctonas y muchas funciones del ganado que previamente habían sido ignoradas están siendo reconocidas. Desde hace algunas décadas, se ha aceptado internacionalmente que las razas de ganado cumplen funciones económicas, socio-culturales, medioambientales y de seguridad alimentaria. Por ello, diferentes organismos internacionales han reconocido que la disminución de los recursos genéticos de animales domésticos (RGADs) es un problema grave y han recomendado su conservación. Aun así, la conservación de RGADs es un tema controvertido por la dificultad de valorar las funciones del ganado. Esta valoración es compleja debido que los RGADs tiene una doble naturaleza privada - pública. Como algunos economistas han subrayado, el ganado es un bien privado, sin embargo debido a algunas de sus funciones, también es un bien público. De esta forma, el aumento del conocimiento sobre valor de cada una de sus funciones facilitaría la toma de decisiones en relación a su conservación y desarrollo. Sin embargo, esta valoración es controvertida puesto que la importancia relativa de las funciones del ganado varía en función del momento, del lugar, de las especies y de las razas. El sector ganadero, debido a sus múltiples funciones, está influenciado por factores técnicos, medioambientales, sociales, culturales y políticos que están interrelacionados y que engloban a una enorme variedad de actores y procesos. Al igual que las funciones del ganado, los factores que afectan a su conservación y desarrollo están fuertemente condicionados por localización geográfica. Asimismo, estos factores pueden ser muy heterogéneos incluso dentro de una misma raza. Por otro lado, es razonable pensar que el ganadero es el actor principal de la conservación de razas locales. Actualmente, las razas locales están siendo Integration of socioeconomic and genetic aspects involved in the conservation of animal genetic resources 5 explotadas por ganaderos muy diversos bajo sistemas de producción también muy diferentes. Por todo ello, es de vital importancia comprender y evaluar el impacto que tienen las motivaciones, y el proceso de toma de decisiones de los ganaderos en la estructura genética de las razas. En esta tesis doctoral exploramos diferentes aspectos sociales, económicos y genéticos involucrados en la conservación de razas locales de ganado vacuno en Europa, como ejemplo de RGADs, esperando contribuir al entendimiento científico de este complejo tema. Nuestro objetivo es conseguir una visión global de los procesos subyacentes en la conservación y desarrollo de estas razas. Pretendemos ilustrar como se pueden utilizar métodos cuantitativos en el diseño y establecimiento de estrategias de conservación y desarrollo de RGADs objetivas y adecuadas. En primer lugar, exploramos el valor económico total (VET) del ganado analizando sus componentes públicos fuera de mercado usando como caso de estudio la raza vacuna Alistana-Sanabresa (AS). El VET de cualquier bien está formado por componentes de uso y de no-uso. Estos últimos incluyen el valor de opción, el valor de herencia y el valor de existencia. En el caso del ganado local, el valor de uso directo proviene de sus productos. Los valores de uso indirecto están relacionados con el papel que cumple las razas en el mantenimiento de los paisajes y cultura rural. El valor de opción se refiere a su futuro uso potencial y el valor de herencia al uso potencial de las generaciones venideras. Finalmente, el valor de existencia está relacionado con el bienestar que produce a la gente saber que existe un recurso específico. Nuestro objetivo fue determinar la importancia relativa que tienen los componentes fuera de mercado sobre el VET de la raza AS. Para ello evaluamos la voluntad de la gente a pagar por la conservación de la AS mediante experimentos de elección (EEs) a través de encuestas. Estos experimentos permiten valorar individualmente los distintos componentes del VET de cualquier bien. Los resultados los analizamos mediante de uso de modelos aleatorios logit. Encontramos que las funciones públicas de la raza AS tienen un valor significativo. Sus valores más importantes son el valor de uso indirecto como elemento cultural Zamorano y el valor de existencia (ambos representaron el 80% de VET). Además observamos que el valor que gente da a las funciones públicas de la razas de ganado dependen de sus características socioeconómicas. Los factores que condicionaron la voluntad a pagar para la conservación de la raza AS fueron el lugar de residencia (ciudad o pueblo), el haber visto animales de la raza o haber consumido sus productos y la actitud de los encuestados ante los conflictos entre el desarrollo económico y el medioambiente. Por otro lado, encontramos que no todo el mundo tiene una visión completa e integrada de todas las funciones públicas de la raza AS. Por este motivo, los programas o actividades de concienciación sobre su estado deberían hacer hincapié en este aspecto. La existencia de valores públicos de la raza AS implica que los ganaderos deberían recibir compensaciones económicas como pago por las funciones públicas que cumple su raza local. Las compensaciones asegurarían un tamaño de población que permitiría que la raza AS siga realizando estas funciones. Un mecanismo para ello podría ser el desarrollo del turismo rural relacionado con la raza. Esto aumentaría el valor de uso privado mientras que supondría un elemento añadido a las estrategias de conservación y desarrollo. No obstante, los ganaderos deben analizar cómo aprovechar los nichos de mercado existentes, así como mejorar la calidad de los productos de la raza prestando especial atención al etiquetado de los mismos. Una vez evaluada la importancia de las funciones públicas de las razas locales de ganado, analizamos la diversidad de factores técnicos, económicos y sociales de la producción de razas locales de ganado vacuno existente en Europa. Con este fin analizamos el caso de quince razas locales de ocho países en el contexto de un proyecto de colaboración internacional. Investigamos las diferencias entre los países para determinar los factores comunes clave que afectan a la viabilidad de las razas locales. Para ello entrevistamos mediante cuestionarios a un total de 355 ganaderos en las quince razas. Como indicador de viabilidad usamos los planes de los ganaderos de variación del tamaño de las ganaderías. Los cuestionarios incluían diferentes aspectos económicos, técnicos y sociales con potencial influencia en las dinámicas demográficas de las razas locales. Los datos recogidos los analizamos mediante distintas técnicas estadísticas multivariantes como el análisis discriminante y la regresión logística. Encontramos que los factores que afectan a la viabilidad de las razas locales en Europa son muy heterogéneos. Un resultado reseñable fue que los ganaderos de algunos países no consideran que la explotación de su raza tenga un alto valor social. Este hecho vuelve a poner de manifiesto la importancia de desarrollar programas Europeos de concienciación sobre la importancia de las funciones que cumplen las razas locales. Además los países analizados presentaron una alta variabilidad en cuanto a la importancia de los mercados locales en la distribución de los productos y en cuanto al porcentaje en propiedad del total de los pastos usados en las explotaciones. Este estudio reflejó la variabilidad de los sistemas y medios de producción (en el sentido socioeconómico, técnico y ecológico) que existe en Europa. Por ello hay que ser cautos en la implementación de las políticas comunes en los diferentes países. También encontramos que la variabilidad dentro de los países puede ser elevada debido a las diferencias entre razas, lo que implica que las políticas nacionales deber ser suficientemente flexibles para adaptarse a las peculiaridades de cada una de las razas. Por otro lado, encontramos una serie de factores comunes a la viabilidad de las razas en los distintos países; la edad de los ganaderos, la colaboración entre ellos y la apreciación social de las funciones culturales, medioambientales y sociales del ganado local. El envejecimiento de los ganaderos de razas locales no es solo un problema de falta de transferencia generacional, sino que también puede suponer una actitud más negativa hacia la inversión en las actividades ganaderas y en una menor capacidad de adaptación a los cambios del sector. La capacidad de adaptación de los ganaderos es un factor crucial en la viabilidad de las razas locales. Las estrategias y políticas de conservación comunes deben incluir las variables comunes a la viabilidad de las razas manteniendo flexibilidad suficiente para adaptarse a las especificidades nacionales. Estas estrategias y políticas deberían ir más allá de compensación económica a los ganaderos de razas locales por la menor productividad de sus razas. Las herramientas para la toma de decisiones ayudan a generar una visión amplia de la conservación y desarrollo de las razas locales. Estas herramientas abordan el diseño de estrategias de conservación y desarrollo de forma sistemática y estructurada. En la tercera parte de la tesis usamos una de estas herramientas, el análisis DAFO (Debilidades, Amenazas, Fortalezas y Oportunidades), con este propósito, reconociendo que la conservación de RGADs depende de los ganaderos. Desarrollamos un análisis DAFO cuantitativo y lo aplicamos a trece razas locales de ganado vacuno de seis países europeos en el contexto del proyecto de colaboración mencionado anteriormente. El método tiene cuatro pasos: 1) la definición del sistema; 2) la identificación y agrupación de los factores influyentes; 3) la cuantificación de la importancia de dichos factores y 4) la identificación y priorización de estrategias. Identificamos los factores utilizando multitud de agentes (multi-stakeholder appproach). Una vez determinados los factores se agruparon en una estructura de tres niveles. La importancia relativa de los cada uno de los factores para cada raza fue determinada por grupos de expertos en RGADs de los países integrados en el citado proyecto. Finalmente, desarrollamos un proceso de cuantificación para identificar y priorizar estrategias. La estructura de agrupación de factores permitió analizar el problema de la conservación desde el nivel general hasta el concreto. La unión de análisis específicos de cada una de las razas en un análisis DAFO común permitió evaluar la adecuación de las estrategias a cada caso concreto. Identificamos un total de 99 factores. El análisis reveló que mientras los factores menos importantes son muy consistentes entre razas, los factores y estrategias más relevantes son muy heterogéneos. La idoneidad de las estrategias fue mayor a medida que estas se hacían más generales. A pesar de dicha heterogeneidad, los factores influyentes y estrategias más importantes estaban ligados a aspectos positivos (fortalezas y oportunidades) lo que implica que el futuro de estas razas es prometedor. Los resultados de nuestro análisis también confirmaron la gran relevancia del valor cultural de estas razas. Las factores internos (fortalezas y debilidades) más importantes estaban relacionadas con los sistemas de producción y los ganaderos. Las oportunidades más relevantes estaban relacionadas con el desarrollo y marketing de nuevos productos mientras que las amenazas más importantes se encontraron a la hora de vender los productos actuales. Este resultado implica que sería fructífero trabajar en la motivación y colaboración entre ganaderos así como, en la mejora de sus capacidades. Concluimos que las políticas comunes europeas deberían centrarse en aspectos generales y ser los suficientemente flexibles para adaptarse a las singularidades de los países y las razas. Como ya se ha mencionado, los ganaderos juegan un papel esencial en la conservación y desarrollo de las razas autóctonas. Por ello es relevante entender que implicación puede tener la heterogeneidad de los mismos en la viabilidad de una raza. En la cuarta parte de la tesis hemos identificado tipos de ganaderos con el fin de entender cómo la relación entre la variabilidad de sus características socioeconómicas, los perfiles de las ganaderías y las dinámicas de las mismas. El análisis se ha realizado en un contexto sociológico, aplicando los conceptos de capital cultural y económico. Las tipologías se han determinado en función de factores socioeconómicos y culturales indicadores del capital cultural y capital económico de un individuo. Nuestro objetivo era estudiar si la tipología socioeconómica de los ganaderos afecta al perfil de su ganadería y a las decisiones que toman. Entrevistamos a 85 ganaderos de la raza Avileña-Negra Ibérica (ANI) y utilizamos los resultados de dichas entrevistas para ilustrar y testar el proceso. Definimos los tipos de ganaderos utilizando un análisis de clúster jerarquizado con un grupo de variables canónicas que se obtuvieron en función de cinco factores socioeconómicos: el nivel de educación del ganadero, el año en que empezó a ser ganadero de ANI, el porcentaje de los ingresos familiares que aporta la ganadería, el porcentaje de propiedad de la tierra de la explotación y la edad del ganadero. La tipología de los ganaderos de ANI resultó ser más compleja que en el pasado. Los resultados indicaron que los tipos de ganaderos variaban en muchos aspectos socioeconómicos y en los perfiles de sus Integration of socioeconomic and genetic aspects involved in the conservation of animal genetic resources 9 ganaderías. Los tipos de ganaderos determinados toman diferentes decisiones en relación a la modificación del tamaño de su ganadería y a sus objetivos de selección. Por otro lado, reaccionaron de forma diferente ante un hipotético escenario de reducción de las compensaciones económicas que les planteamos. En este estudio hemos visto que el capital cultural y el económico interactúan y hemos explicado como lo hacen en los distintos tipos de ganaderos. Por ejemplo, los ganaderos que poseían un mayor capital económico, capital cultural formal y capital cultural adquirido sobre la raza, eran los ganaderos cuyos animales tenían una mayor demanda por parte de otros ganaderos, lo cual podría responder a su mayor prestigio social dentro de la raza. Uno de los elementos claves para el futuro de la raza es si este prestigio responde a una superioridad genética de las animales. Esto ocurriría si los ganaderos utilizaran las herramientas que tienen a su disposición a la hora de seleccionar animales. Los tipos de ganaderos identificados mostraron también claras diferencias en sus formas de colaboración y en su reacción a una hipotética variación de las compensaciones económicas. Aunque algunos tipos de ganaderos mostraron un bajo nivel de dependencia a estas compensaciones, la mayoría se manifestaron altamente dependientes. Por ello cualquier cambio drástico en la política de ayudas puede comprometer el desarrollo de las razas autóctonas. La adaptación las políticas de compensaciones económicas a la heterogeneidad de los ganaderos podría aumentar la eficacia de las mismas por lo que sería interesante explorar posibilidades a este respecto. Concluimos destacando la necesidad de desarrollar políticas que tengan en cuenta la heterogeneidad de los ganaderos. Finalmente abordamos el estudio de la estructura genética de poblaciones ganaderas. Las decisiones de los ganaderos en relación a la selección de sementales y su número de descendientes configuran la estructura demográfica y genética de las razas. En la actualidad existe un interés renovado por estudiar las estructuras poblacionales debido a la influencia potencial de su estratificación sobre la predicción de valores genómicos y/o los análisis de asociación a genoma completo. Utilizamos dos métodos distintos, un algoritmo de clústeres basados en teoría de grafos (GCA) y un algoritmo de clustering bayesiano (STRUCTURE) para estudiar la estructura genética de la raza ANI. Prestamos especial atención al efecto de la presencia de parientes cercanos en la población y de la diferenciación genética entre subpoblaciones sobre el análisis de la estructura de la población. En primer lugar evaluamos el comportamiento de los dos algoritmos en poblaciones simuladas para posteriormente analizar los genotipos para 17 microsatélites de 13343 animales de 57 ganaderías distintas de raza ANI. La ANI es un ejemplo de raza con relaciones complejas. Por otro lado, utilizamos el archivo de pedigrí de la raza para estudiar el flujo de genes, calculando, entre otras cosas, la contribución de cada ganadería a la constitución genética de la raza. En el caso de las poblaciones simuladas, cuando el FST entre subpoblaciones fue suficientemente alto, ambos algoritmos, GCA y STRUCTURE, identificaron la misma estructura genética independientemente de que existieran o no relaciones familiares. Por el contrario, cuando el grado de diferenciación entre poblaciones fue bajo, el STRUCTURE identificó la estructura familiar mientras que GCA no permitió obtener ningún resultado concluyente. El GCA resultó ser un algoritmo más rápido y eficiente para de inferir la estructura genética en poblaciones con relaciones complejas. Este algoritmo también puede ser usado para reducir el número de clústeres a testar con el STRUTURE. En cuanto al análisis de la población de ANI, ambos algoritmos describieron la misma estructura, lo cual sugiere que los resultados son robustos. Se identificaron tres subpoblaciones diferenciadas que pudieran corresponderse con tres linajes distintos. Estos linajes estarían directamente relacionados con las ganaderías que han tenido una mayor contribución a la constitución genética de la raza. Por otro lado, hay un conjunto muy numeroso de individuos con una mezcla de orígenes. La información molecular describe una estructura estratificada de la población que se corresponde con la evolución demográfica de la raza. Es esencial analizar en mayor profundidad la composición de este último grupo de animales para determinar cómo afecta a la variabilidad genética de la población de ANI. SUMMARY Summary Livestock sector is gradually dominated by intensive and specialized systems where the production environment is controlled and the production traits are the main criteria for the selection of species and breeds. In the meantime, the traditional use of domestic animals for draught work, clothes and manure has been replaced by industrial products. As a consequence of both these changes, the intensively selected breeds closely linked with high-input highoutput production systems have displaced many native breeds where the selection has practically ceased or been very mild. People are now more aware of the state of endangerment among the native breeds and the previously ignored values of livestock are gaining recognition. For some decades now, the economic, socio-cultural, environmental and food security function of livestock breeds have been accepted worldwide and their loss has been recognized as a major problem. Therefore, the conservation of farm animal genetic resources (FAnGR) has been recommended. The conservation of FAnGR is controversial due to the complexity of the evaluation of its functions. This evaluation is difficult due to the nature of FAnGR both as private and public good. As some economists have highlighted, livestock animals are private goods, however, they are also public goods by their functions. Therefore, there is a need to increase the knowledge about the value of all livestock functions since to support the decision-making for the sustainable conservation and breeding of livestock. This is not straightforward since the relative importance of livestock functions depends on time, place, species and breed. Since livestock play a variety of roles, their production is driven by interrelated and everchanging economic, technical, environmental, social, cultural and political elements involving an enormous range of stakeholders. Not only FAnGR functions but also the importance of factors affecting the development and conservation of FAnGR can be very different across geographical areas. Furthermore, heterogeneity can be found even within breeds. Local breeds are nowadays raised by highly diverse farmers in equally diverse farms. It is quite reasonable to think that farmer is the major actor in the in situ conservation of livestock breeds. Thus, there is a need to understand the farmers’ motivations, decision making processes and the impact of their decisions on the genetic structure of breeds. In this PhD thesis we explore different social, economic and genetic aspects involved in the conservation of local cattle breeds, i.e. FAnGR, in Europe seeking to contribute to the scientific understanding of this complex issue. We aim to achieve a comprehensive view of the processes involved in the conservation and development of local cattle breeds and have made special efforts in discussing the implications of the research results in this respect. The final outcome of the thesis is to illustrate how quantitative methods can be exploited in designing and establishing sound strategies and programmes for the conservation and development of local livestock breeds. Firstly we explored the public non-market attributes of the total economic value (TEV) of livestock, using the Spanish Alistana-Sanabresa (AS) cattle breed as a case study. Total economic value of any good comprises both use and non-use components, where the latter include option, bequest and existence values. For livestock, the direct use values are mainly stemming from production outputs. Indirect use values relate to the role of livestock as a maintainer of rural culture and landscape. The option value is related to the potential use of livestock, the bequest values relate to the value associated with the inheritance of the resources to future generation and the existence values relate to the utility perceived by people from knowing that specific resources exist. We aimed to determine the relative importance of the non-market components of the TEV of the AS breed, the socio-economic variables that influence how people value the different components of TEV and to assess the implications of the Spanish national conservation strategy for the AS breed. To do so, we used a choice experiment (CE) approach and applied the technique to assess people’s willingness to pay (WTP) for the conservation of AS breed. The use of CE allows the valuation of the individual components of TEV for a given good. We analysed the choice data using a random parameter logit (RPL) model. AS breed was found to have a significant public good value. Its most important values were related to the indirect use value due to the maintenance of Zamorian culture and the existence value (both represent over 80% of its TEV). There were several socioeconomic variables influencing people’s valuation of the public service of the breed. In the case of AS breed, the place of living (city or rural area), having seen animals of the breed, having eaten breed products and the respondents’ attitude towards economic development – environment conflicts do influence people’s WTP for AS conservation. We also found that people do not have a complete picture of all the functions and roles that AS breed as AnGR. Therefore, the actions for increasing awareness of AS should go to that direction. The farmers will need incentives to exploit some of the public goods values and maintain the breed population size at socially desirable levels. One such mechanism could be related to the development of agritourism, which would enhance the private good value and provide an important addition to the conservation and utilisation strategy. However, the farmers need a serious evaluation on how to invest in niche product development or how to improve product quality and brand recognition. Using the understanding on the importance of the public function of local cattle we tried to depict the current diversity regarding technical, economic and social factors found in local cattle farming across Europe. To do so we focused in an international collaborative project on the case of fifteen local cattle breeds in eight European countries. We investigated the variation among the countries to detect the common key elements, which affect the viability of local breeds. We surveyed with interviews a total of 355 farms across the fifteen breeds. We used the planned herd size changes by the farmer as an indicator of breed viability. The questionnaire included several economic, technical and social aspects with potential influence on breeds’ demographic trends. We analysed the data using multivariate statistical techniques, such as discriminat analysis and logistic regression. The factors affecting a local breed’s viability were highly heterogeneous across Europe. In some countries, farmers did not recognise any high social value attached to keeping a local cattle breed. Hence there is a need to develop communication programmes across EU countries making people aware about the diversity and importance of values associated to raising local breeds. The countries were also very variable regarding the importance of local markets and the percentage of farm land owned by the farmers. Despite the country specificities, there were also common factors affecting the breed viability across Europe. The factors were from different grounds, from social, such as the age of the farmer and the social appreciation of their work, to technicalorganizational, such as the farmers’ attitude to collaborating with each other. The heterogeneity found reflects the variation in breeding systems and production environment (in the socioeconomic, technical and ecological sense) present in Europe. Therefore, caution should be taken in implementing common policies at the country level. Variability could also be rather high within countries due to breed specificities. Therefore, the national policies should be flexible to adapt to the specificities. The variables significantly associated with breed viability should be positively incorporated in the conservation strategies, and considered in developing common and/or national policies. The strategy preparation and policy planning should go beyond the provision of a general economic support to compensate farmers for the lower profitability of local breeds. Of particular interest is the observation that the opportunity for farmer collaboration and the appreciation by the society of the cultural, environmental and social role of local cattle farming were positively associated with the breed survival. In addition, farmer's high age is not only a problem of poor generation transfer but it is also a problem because it might lead to a lower attitude to investing in farming activities and to a lower ability to adapt to environment changes. The farmers’ adaptation capability may be a key point for the viability of local breeds. Decision making tools can help to get a comprehensive view on the conservation and development of local breeds. It allows us to use a systematic and structured approach for identifying and prioritizing conservation and development strategies. We used SWOT (Strengths, Weaknesses Opportunities and Threats) analysis for this purpose and recognized that many conservation and development projects rely on farmers. We developed a quantified SWOT method and applied it in the aforementioned collaborative research to a set of thirteen cattle breeds in six European countries. The method has four steps: definition of the system, identification and grouping of the driving factors, quantification of the importance of driving factors and identification and prioritization of the strategies. The factors were determined following a multi-stakeholder approach and grouped with a three level structure. FAnGR expert groups ranked the factors and a quantification process was implemented to identify and prioritize strategies. The structure of the SWOT analysis allowed analyzing the conservation problem from general down to specific perspectives. Joining breed specific analyses into a common SWOT analysis permitted comparison of breed cases across countries. We identified 99 driving factors across breeds. The across breed analysis revealed that irrelevant factors were consistent. There was high heterogeneity among the most relevant factors and strategies. The strategies increased eligibility as they lost specificity. Although the situation was very heterogeneous, the most promising factors and strategies were linked to the positive aspects (Strengths and Opportunities). Therefore, the future of the studied local breed is promising. The results of our analysis also confirmed the high relevance of the cultural value of the breeds. The most important internal factors (strengths and weaknesses) were related farmers and production systems. The most important opportunities were found in developing and marketing new products, while the most relevant threats were found in selling the current conventional products. In this regard, it should be fruitful to work on farmers’ motivation, collaboration, and capacity building. We conclude that European policies should focus on general aspects and be flexible enough to be adapted to the country and breed specificities. As mentioned, farmers have a key role in the conservation and development of a local cattle breed. Therefore, it is very relevant to understand the implications of farmer heterogeneity within a breed for its viability. In the fourth part of the thesis, we developed a general farmer typology to help analyzing the relations between farmer features and farm profiles, herd dynamics and farmers’ decision making. In the analysis we applied and used the sociological framework of economic and cultural capital and studied how the determined farmer types were linked to farm profiles and breeding decisions, among others. The typology was based on measurable socioeconomic factors indicating the economic and cultural capital of farmers. A group of 85 farmers raising the Spanish Avileña-Negra Ibérica (ANI) local cattle breed was used to illustrate and test the procedure. The farmer types were defined by a hierarchical cluster analysis with a set of canonical variables derived from the following five the socioeconomic factors: the formal educational level of the farmer, the year the farmer started keeping the ANI breed, the percentage of the total family income covered by the farm, the percentage of the total farm land owned by the farmer and the farmer’s age. The present ANI farmer types were much more complex than what they were in the past. We found that the farmer types differed in many socioeconomic aspects and in the farms profile. Furthermore, the types also differentiate farmers with respect to decisions about changing the farm size, breeding aims and stated reactions towards hypothetical subsidy variation. We have verified that economic and cultural capitals are not independent and further showed how they are interacting in the different farmer types. The farmers related to the types with high economic, institutionalized and embodied cultural capitals had a higher demand of breeding animals from others farmers of the breed, which may be related to the higher social prestige within the breed. One of the key implications of this finding for the future of the breed is whether or not the prestige of farmers is related to genetic superiority of their animals, what is to say, that it is related with a sound use of tools that farmers have available to make selection decisions. The farmer types differed in the form of collaboration and in the reactions to the hypothetical variation in subsidies. There were farmers with low dependency on subsidies, while most of them are highly dependent on subsidies. Therefore, any drastic change in the subsidy programme might have influence on the development of local breeds. The adaptation of these programme to the farmers’ heterogeneity might increase its efficacy, thus it would be interesting to explore ways of doing it. We conclude highlighting the need to have a variety of policies, which take into account the heterogeneity among the farmers. To finish we dealt with the genetic structure of livestock populations. Farmers’ decisions on the breeding animals and their progeny numbers shape the demographic and genetic structure of the breeds. Nowadays there is a renovated interest in studying the population structure since it can bias the prediction of genomic breeding values and genome wide association studies. We determined the genetic structure of ANI breed using two different methods, a graphical clustering algorithm (GCA) and a Bayesian clustering algorithm (STRUCTURE) were used. We paid particular attention to the influence that the presence of closely related individuals and the genetic differentiation of subpopulations may have on the inferences about the population structure. We first evaluated the performance of the algorithms in simulated populations. Then we inferred the genetic structure of the Spanish cattle breed ANI analysing a data set of 13343 animals (genotyped for 17 microsatellites) from 57 herds. ANI breed is an example of a population with complex relationships. We used the herdbook to study the gene flow, estimation among other things, the contribution of different herds to the genetic composition of the ANI breed. For the simulated scenarios, when FST among subpopulations was sufficiently high, both algorithms consistently inferred the correct structure regardless of the presence of related individuals. However, when the genetic differentiation among subpopulations was low, STRUCTURE identified the family based structure while GCA did not provide any consistent picture. The GCA was a fast and efficient method to infer genetic structure to determine the hidden core structure of a population with complex history and relationships. GCA could also be used to narrow down the number of clusters to be tested by STRUCTURE. Both, STRUCTURE and GCA describe a similar structure for the ANI breed suggesting that the results are robust. ANI population was found to have three genetically differentiated clusters that could correspond to three genetic lineages. These are directly related to the herds with a major contribution to the breed. In addition, ANI breed has also a large pool made of individuals with an admixture of origins. The genetic structure of ANI, assessed by molecular information, shows a stratification that corresponds to the demographic evolution of the breed. It will be of great importance to learn more about the composition of the pool and study how it is related to the existing genetic variability of the breed.
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Sustainability managementand Sustainability Reporting (SR) practices have dramatically increased during the last two decades, raising important questions about the relationship between internal practices and external communication. Previous literature on SR has almost exclusively highlighted the role of institutional and stakeholder pressures in driving its adoption. However, as surveys among reporters also identify internal benefits of SR, its full role for company-level sustainability management remains unclear. In order to address this question, we develop a framework accounting for four SR configurations, stemming from different levels of relative importance of external and internal motives for SR. A multiple case study involving four large Spanish companies serves to illustrate the framework and to identify company-level factors that act both as enablers and barriers of SR internal relevance. We conclude that motivations for SR, along with such internal factors, decisively influence its contribution to sustainability management.
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Las distintas encuestas realizadas sobre la percepción social de la ciencia indican que un alto porcentaje de jóvenes no tienen interés por estas materias. Es muy importante la alfabetización científica de la población ya que ello permite tomar decisiones tanto para la vida cotidiana como sobre distintos problemas que afectan al conjunto de la sociedad. Una sociedad con más conocimiento científico--‐tecnológico lleva asociado un mayor crecimiento económico, pero desafortunadamente nos encontramos con una disminución del número de alumnos que elige estudios de Ciencia y Tecnología. Este desinterés viene influenciado tanto por factores internos al estudiante como por externos. Desde la posición docente podemos actuar sobre ellos promoviendo actividades relacionadas con la divulgación científico--‐tecnológica en clase haciendo uso de medios de comunicación que ofrezcan información procedente de fuentes fiables (prensa escrita, radio, televisión y cibermedios/web 2.0). La propuesta metodológica planteada aquí ayudará a ampliar la alfabetización científico--‐tecnológica a través de la exploración del trabajo de los investigadores actuales y de las biografías de los científicos de otras épocas. Además los alumnos crearán de forma colaborativa material propio para divulgar la Ciencia y la Tecnología en el aula. La propuesta se sitúa en el curso 1º de ESO, pero con perspectivas de extenderla en cursos sucesivos al resto de secundaria y bachillerato adaptando los contenidos . Con este trabajo pretendemos contribuir a incrementar el interés por la Ciencia y la Tecnología en el alumnado de secundaria y bachillerato. ABSTRACT The different surveys conducted in order to analyse the social perception of science show that a high percentage of young people is not interested in these subjects. The level of scientific literacy in the population is very important because it allows people to make their own decisions not only for life management skills but also for coping with the diverse problems that may affect the whole society. A society with more scientific and technological knowledge has attached a higher economic growth, but unfortunately there is a reduction in the number of students that choose Science and Tech studies. This lack of interest is influenced by the student’s internal factors as well as by the external ones. From the teacher’s point of view, it is possible to act on them, promoting activities related to scientific and technological broadcasting in the class, using mass media which can provide information from reliable sources (press, radio, television and media on the Internet/web 2.0) The methodological proposal that is made here will help to broaden scientific literacy through exploring the current researcher’s studies and the former scientifics’ biographies. Students will also create their own material in a collaborative way in order to divulgate science and technology in the classroom. The proposal is set for the first grade of secondary education, but we have in prospect to spread it during the following school years to the rest of secondary education grades and A levels only adapting its content. With this essay we want to contribute to the increasing of the interest in science and technology in high school and A levels students.
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El motivo de abordar esta Tesis responde al hecho personal de haber vivido históricamente momentos cumbre de la Construcción Naval en España y no dejar de plantearme, a pesar de mi distancia del sector desde el punto de vista profesional, en las opciones de futuro para volver a ser competitivos en un sector que ha tenido un peso tan importante en la economía española, y que tanto ha ilusionado a centenares de profesionales y compañeros a lo largo de muchas décadas con el optimismo de estar aportando valor para que España fuera competitiva. A lo largo de los últimos años, y la relación con el ámbito de la dirección de Empresas desde el punto de vista de una Escuela de Negocios, así como el contacto con enfoques estratégicos en sectores muy diversos me animó a plantearme la Tesis con el objetivo de reflejar el estado actual del sector y poder valorar alternativas de futuro para la Construcción Naval española, aun sabiendo que son muchos los “maestros” realmente autorizados en nuestros país, con amplios conocimientos y experiencia, que muchas veces, a pesar de las propuestas y de los esfuerzos que han realizado para impulsar el sector, se han encontrado con situaciones adversas, bien de tipo económico, social‐laboral, político ‐a nivel nacional, europeo o global‐, etc., que han impedido un fortalecimiento del sector como todos hubiéramos deseado. La presión histórica ejercida por los países competidores en Construcción naval del ámbito asiático y lejano oriente, así como los compromisos derivados de las Directivas europeas, han obligado al sector de la Construcción Naval en España a buscar unos nuevos posicionamientos estratégicos presentes y, sobre todo, de futuro. Partiendo de un análisis del sector naval, tanto del mercado nacional como del internacional, con especial foco en los países líderes, se plantea investigar, siguiendo el modelo de Porter, las fuerzas competitivas que han influido en estas últimas décadas y que han conducido a la situación actual, valorando la estructura competitiva, el entorno relevante y los efectos de la globalización, con las amenazas de los nuevos y actuales competidores y las barreras existentes. Para abordar esta investigación se ha realizado un análisis del sector naval con la siguiente metodología: 1. Análisis del estado actual de la construcción naval en España. 2. Análisis del estado actual de la construcción naval en el mundo. 3. Estudio de la demanda en el mercado y evolución de la misma en los últimos años: muy centrada en los países líderes y más competitivos. 4. Estudio de las perspectivas de negocio en el sector marítimo y oceánico: estudio particular del transporte marítimo y una comparativa con la explotación de recursos oceánicos. Finalmente se decidió no abordar por falta de datos de futuro las construcciones militares. 5. Estudio de características de la industria naval española y capacidad de los astilleros. Se ha focalizado especialmente en la construcción para valorar la capacidad de futuro. 6. Análisis de fuerzas competitivas de la industria naval española a partir del modelo de Porter. En esta parte se incluyen alguno de los factores críticos externos e internos que ayudan a identificar barreras y estrategias en el entorno de la construcción naval como sector global. 7. Identificación de las oportunidades de negocio hacia el 2050. 8. Alternativas para una estrategia competitiva de actuación frente a las oportunidades de futuro en el 2050. Con esta Tesis se aporta un estudio competitivo actualizado, de acuerdo con el modelo de Porter, con el fin de proponer una posible estrategia competitiva de futuro, que posicione competitivamente la industria naval y el sector marítimo en España en las próximas décadas. ABSTRACT The reason for addressing this thesis responds to my personal experience about having lived historical moments summit Shipbuilding in Spain. Despite my distance from this industry from a professional point of view, I have never stopped wonder myself which are the options for the future to become competitive in an industry that has had such an important weight in the Spanish economy, which has excited so hundreds of professionals and peers through many decades with optimism to be adding value to Spain in order to be competitive again. Over recent years, and the relationship with the field of business management from the point of view of a business school, as well as contact with strategic approaches in diverse sectors encouraged me to wonder Thesis order to reflect the current state of the sector and to evaluate future alternatives for the Spanish Shipbuilding, knowing that many "teachers" really allowed in our country, with extensive knowledge and experience that often, despite proposals and the efforts that have been made to boost the sector, have met with adverse situations, whether economic, social and labor, political kind ‐at national, European or global‐level, etc., that have prevented a strengthening of all sectors we wished. The historical pressure from competing countries in Shipbuilding Asian area and Far East, as well as commitments arising from EU directives, have forced the shipbuilding industry in Spain to seek a new strategic positions present and, above all, future. Starting from an analysis of the shipbuilding sector, both national and international market, with special focus on the leading countries, we propose to investigate, following the model of Porter, the competitive forces that have influenced recent decades and have led to the current situation, assessing the competitive structure of the relevant environment and the effects of globalization, with the threat of new and existing competitors and barriers. To address this research has analyzed the naval sector with the following methodology: 1. Analysis of the current state of shipbuilding in Spain. 2. Analysis of the current state of shipbuilding in the world. 3. Study of the demand in the market and evolution of the same in recent years: very focused on the leading and most competitive countries. 4. Study of business prospects in the maritime and oceanic sector: private study of maritime transport and a comparison with the exploitation of ocean resources. Finally it was decided not to address a lack of data future military construction. 5. Study of characteristics of the Spanish shipbuilding and shipyard capacity. It is particularly focused on building the capacity to assess future. 6. Analysis of competitive forces of the Spanish shipbuilding industry from the model of Porter. In this part they include some critics of the external and internal factors that help identify barriers and strategies in the environment of global shipbuilding sector. 7. Identification of business opportunities by 2050. 8. Alternatives to a competitive strategy of action against future opportunities in 2050. This thesis has sought to provide a competitive study updated according to Porter's model, in order to propose a possible future competitive strategy to reach a competitive position at the shipbuilding industry and the maritime sector in Spain in the coming decades. The historical pressure from competing countries in the Asian sphere Shipbuilding and Far East, as well as commitments arising from EU directives have forced the shipbuilding industry in Spain to seek a new strategic positioning. Starting from an analysis of the shipbuilding sector, both national and international market, with a special focus on the leading countries, it is proposed to analyze, following the model of Porter, the competitive forces that have influenced in recent decades and have led to the current situation, studying the competitive structure of the relevant environment and the effects of globalization, with the threat of new and existing competitors and barriers. It concludes with a forecast of future market and business opportunities arising in the global environment of maritime and naval Industry, in order to propose a possible competitive strategy for the near future, which could help to achieve a competitive position on the shipbuilding and maritime sector in Spain for the coming decades.
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It has been shown that cloud computing brings cost benefits and promotes efficiency in the operations of the organizations, no matter what their type or size. However, few public organizations are benefiting from this new paradigm shift in the way the organizations consume and manage computational resources. The objective of this thesis is to analyze both internal and external factors that may influence the adoption of cloud computing by public organizations and propose possible strategies that can assist these organizations in their path to cloud usage. In order to achieve this objective, a SWOT analysis has been conducted, detecting internal factors (strengths and weaknesses) and external factors (opportunities and threats) that can influence the adoption of a governmental cloud. With the application of a TOWS matrix, by combining the internal and external factors, a list of possible strategies have been formulated to be used as a guide to decision-making related to the transition to a cloud environment.
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O projeto é uma etapa importante do empreendimento do subsetor Edificações, pois é o momento em que muitas decisões sobre o seu desempenho e a execução podem ser tomadas. Por essa razão, essa etapa é estratégica em relação à sustentabilidade ambiental. O objetivo geral da presente tese é propor diretrizes de gestão para empresas de projeto com foco no atendimento a requisitos ambientais em projetos de edificações. Para atingir o objetivo proposto, três etapas de pesquisa foram realizadas. A Etapa 1 tem foco no diagnóstico das práticas de algumas empresas que atuam no mercado: empresas de projeto de edificações e de consultoria em sustentabilidade ambiental. Os métodos utilizados nessa etapa são pesquisa-ação, questionário e pesquisa exploratória. Na Etapa 2 da pesquisa, três estudos de caso envolvendo empresas de projeto da cidade de São Paulo foram realizados, a fim de analisar a sua gestão com foco em sustentabilidade ambiental. Na Etapa 3, uma pesquisa survey foi realizada buscando investigar, de modo mais abrangente, se a sustentabilidade ambiental é considerada nos processos gerenciais das empresas. Os principais resultados dos estudos mostram que há fatores externos e internos à empresa que influenciam em sua reação frente às demandas de mercado ou da sociedade; a consideração da sustentabilidade ambiental pela empresa de projeto trouxe mudanças aos seus processos gerenciais. Esses resultados e a literatura fundamentaram a proposição de diretrizes de orientação de gestão para empresas de projeto com foco no atendimento a requisitos ambientais. A gestão propicia um ambiente mais favorável aos conceitos de sustentabilidade, durabilidade e desempenho.
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Nas últimas décadas, investigações têm destacado o papel da história e filosofia da ciência (HFC) na educação científica. O reconhecimento da pluralidade e complexidade da ciência tem originado estudos, os quais apontam que o ensino sobre ciências deve levar em conta as diferenças entre as disciplinas científicas. Assim, tem-se discutido a importância da consideração de elementos da história e da filosofia da química no aprimoramento do processo de ensino e aprendizagem dessa ciência. Apesar disso, investigações têm constatado que pouco ou nada se discute acerca desses assuntos nas aulas de ciências. Diante disso, esta dissertação tem como intuito investigar a concepção de professores de química sobre a inclusão de elementos da HFC no ensino, com foco nas características inerentes às práticas e aos conhecimentos químicos. Foram investigadas as concepções de cinco professores de química, que atuam em diferentes escolas públicas da região metropolitana de São Paulo, acerca de cinco temas, elaborados com base em estudos da área de ensino de ciências e em diretrizes curriculares oficiais: relações com a sociedade, modelos e modelagem, experimentação, desenvolvimento histórico e reducionismo. Por meio da análise qualitativa dos dados, as concepções docentes, para cada tema, foram classificadas em dois subeixos temáticos: prática docente e relevância. Ademais, foram identificados fatores externos e internos que influenciam as práticas e concepções dos sujeitos concernentes a considerações filosóficas, históricas e sociológicas sobre a química. Os resultados evidenciam que, de modo geral, os sujeitos consideram relevantes determinados assuntos relacionados à natureza da química e, em certa medida, buscam inseri-los em suas práticas cotidianas. Contudo, mostraram também que os motivos pelos quais os docentes conferem importância a algumas discussões, e o modo como as desenvolvem, podem limitar a compreensão dos estudantes sobre a complexidade da construção do conhecimento científico. Além disso, foram raras as referências a aspectos específicos da química, à importância de evidenciar e discutir esses aspectos com os estudantes, assim como à preparação de situações didáticas próximas à prática química autêntica.
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Although deterministic models of the evolution of mass tourism coastal resorts predict an almost inevitable decline over time, theoretical frameworks of the evolution and restructuring policies of mature destinations should be revised to reflect the complex and dynamic way in which these destinations evolve and interact with the tourism market and global socio-economic environment. The present study examines Benidorm because its urban and tourism model and large-scale tourism supply and demand make it one of the most unique destinations on the Mediterranean coast. The investigation reveals the need to adopt theories and models that are not purely deterministic. The dialectic interplay between external factors and the internal factors inherent in this destination simultaneously reveals a complex and diverse stage of maturity and the ability of destinations to create their own future.
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Research on the impact of innovation on regional economic performance in Europe has fundamentally followed three approaches: a) the analysis of the link between investment in R&D, patents, and economic growth; b) the study of the existence and efficiency of regional innovation systems; and c) the examination of geographical diffusion of regional knowledge spillovers. These complementary approaches have, however, rarely been combined. Important operational and methodological barriers have thwarted any potential cross-fertilization. In this paper, we try to fill this gap in the literature by combining in one model R&D, spillovers, and innovation systems approaches. A multiple regression analysis is conducted for all regions of the EU-25, including measures of R&D investment, proxies for regional innovation systems, and knowledge and socio-economic spillovers. This approach allows us to discriminate between the influence of internal factors and external knowledge and institutional flows on regional economic growth. The empirical results highlight how the interaction between local and external research with local and external socioeconomic and institutional conditions determines the potential of every region in order to maximise its innovation capacity. They also indicate the importance of proximity for the transmission of economically productive knowledge, as spillovers show strong distance decay effects. In the EU-25 context, only the innovative efforts pursued within a 180 minute travel radius have a positive and significant impact on regional growth performance.
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Dissertação apresentada para obtenção do grau de Mestre em Educação social e intervenção comunitária
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This, the sixty-eighth edition of the Economic Survey of Latin America and the Caribbean, which corresponds to the year 2016, consists of three parts. Part I outlines the region’s economic performance in 2015 and analyses trends in the first half of 2016, as well as the outlook for the rest of the year. It examines the external and internal factors influencing the region’s economic performance and highlights some of the macroeconomic policy challenges that have arisen in an external context of weak growth and high levels of uncertainty. Part II analyses the challenges that the countries of Latin America and the Caribbean face at the domestic and international levels in mobilizing financing for development. On the domestic front, slower growth and tighter fiscal restrictions pose significant challenges for the mobilization of resources. Externally, the classification of many of the region’s countries in the middle-income category limits their access to concessional external financing or international support. Part III of this publication may be accessed on the web page of the Economic Commission for Latin America and the Caribbean (www.eclac.org). It contains the notes relating to the economic performance of the countries of Latin America and the Caribbean in 2015 and the first half of 2016, together with their respective statistical annexes. The cut-off date for updating the statistical information in this publication was 30 June 2016.
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We investigated plasma hormone profiles of corticosterone and testosterone in immature hawksbill turtles (Eretmochelys imbricata) in response to a capture stress protocol. Further, we examined whether sex and body condition were covariates associated with variation in the adrenocortical response of immature turtles. Hawksbill turtles responded to the capture stress protocol by significantly increasing plasma levels of corticosterone over a 5 h period. There was no significant sex difference in the corticosterone stress response of immature turtles. Plasma testosterone profiles, while significantly different between the sexes, did not exhibit a significant change during the 5 h capture stress protocol. An index of body condition was not significantly associated with a turtle's capacity to produce plasma corticosterone both prior to and during exposure to the capture stress protocol. In summary, while immature hawksbill turtles exhibited an adrenocortical response to a capture stress protocol, neither their sex nor body condition was responsible for variation in endocrine responses. This lack of interaction between the adrenocortical response and these internal factors suggests that the inactive reproductive- and the current energetic- status of these immature turtles are important factors, that could influence plasma hormone profiles during stress. (C) 2003 Elsevier Inc. All rights reserved.