998 resultados para RE-OS ISOTOPIC SYSTEMATICS


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Climate change remains a major challenge for today’s and future societies due to its immense impacts on human lives and the natural environment. This thesis investigates the extent to which individuals are willing and prepared to voluntarily contribute to climate protection and to adjust to new climatic conditions in order to cope with the consequences of climate change and reduce the severity of potential negative impacts. The thesis thereby combines research in the fields of the private provision of environmental public goods and adaptation to climate change, which is still widely unconnected in the existing literature. The six contributions of this thesis mainly focus on microeconometric analyses using data from international surveys in China, Germany, and the USA. The main findings are: (i) A substantial share of individuals is willing to voluntarily contribute to climate protection and to adapt to climatic change. The engagement in both strategies is positively interrelated at the individual level and the analyses reveal hardly any evidence that adaptation activities crowd out individuals’ incentives to engage in climate protection. (ii) The main determinants of individuals’ adaptation activities seem to be the subjective risk perception as well as socio-economic and socio-demographic characteristics like age, gender, education, and income, while their climate protection efforts are found to be broadly motivated by financial advantages from these activities and additional immaterial benefits. (iii) The empirical findings also suggest a significantly positive relationship between certain climate protection activities. Substitutions are found to occur merely if one measure is perceived to be more effective in providing climate protection or if individuals have high environmental preferences. (iv) This thesis further reveals a common understanding of a (normatively) fair burden-sharing in international climate policy across citizens in China, Germany, and the USA. The highest preferences are found for the accountability principle.

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At the time of a customer order, the e-tailer assigns the order to one or more of its order fulfillment centers, and/or to drop shippers, so as to minimize procurement and transportation costs, based on the available current information. However this assignment is necessarily myopic as it cannot account for all future events, such as subsequent customer orders or inventory replenishments. We examine the potential benefits from periodically re-evaluating these real-time order-assignment decisions. We construct near-optimal heuristics for the re-assignment for a large set of customer orders with the objective to minimize the total number of shipments. We investigate how best to implement these heuristics for a rolling horizon, and discuss the effect of demand correlation, customer order size, and the number of customer orders on the nature of the heuristics. Finally, we present potential saving opportunities by testing the heuristics on sets of order data from a major e-tailer.

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In Catalonia, according to the nitrate directive (91/676/EU), nine areas have been declared as vulnerable to nitrate pollution from agricultural sources (Decret 283/1998 and Decret 479/2004). Five of these areas have been studied coupling hydro chemical data with a multi-isotopic approach (Vitòria et al. 2005, Otero et al. 2007, Puig et al. 2007), in an ongoing research project looking for an integrated application of classical hydrochemistry data, with a comprehensive isotopic characterisation (δ15N and δ18O of dissolved nitrate, δ34S and δ18O of dissolved sulphate, δ13C of dissolved inorganic carbon, and δD and δ18O of water). Within this general frame, the contribution presented explores compositional ways of: (i) distinguish agrochemicals and manure N pollution, (ii) quantify natural attenuation of nitrate (denitrification), and identify possible controlling factors. To achieve this two-fold goal, the following techniques have been used. Separate biplots of each suite of data show that each studied region has a distinct δ34S and pH signatures, but they are homogeneous with regard to NO3- related variables. Also, the geochemical variables were projected onto the compositional directions associated with the possible denitrification reactions in each region. The resulting balances can be plot together with some isotopes, to assess their likelihood of occurrence

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Seleccionado en la convocatoria: Ayudas a la innovación e investigación educativa en centros docentes de niveles no universitarios, Gobierno de Aragón 2008-09

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Re-inventa propone aportar a la solución de la problemática ambiental actual desde el ámbito de las artes, generando investigación plástica que indague sobre materiales con cualidades de reutilización.

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Completed, available and free to use Learning Objects listed by subject area

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A two-minute video that shows you how to edit an existing meeting in Adobe Connect so you can re-use that meeting room for a new date, time and (if needed) different participants.

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Este es un estudio de caso en el que se pretende describir la participación de la Cooperación Internacional en los proyectos de Educación en el campo de refugiados Corail localizado en Puerto Principe, Haiti, durante la etapa de asistencia humanitaria en el año 2010. Dicha participación surgió en el ámbito del terremoto de 7.0 grados en la Escala de Richter, ocurrido el 12 de enero de 2010, cuando, según informes del gobierno, 222.570 personas perdieron la vida.

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The proliferation of Web-based learning objects makes finding and evaluating online resources problematic. While established Learning Analytics methods use Web interaction to evaluate learner engagement, there is uncertainty regarding the appropriateness of these measures. In this paper we propose a method for evaluating pedagogical activity in Web-based comments using a pedagogical framework, and present a preliminary study that assigns a Pedagogical Value (PV) to comments. This has value as it categorises discussion in terms of pedagogical activity rather than Web interaction. Results show that PV is distinct from typical interactional measures; there are negative or insignificant correlations with established Learning Analytics methods, but strong correlations with relevant linguistic indicators of learning, suggesting that the use of pedagogical frameworks may produce more accurate indicators than interaction analysis, and that linguistic rather than interaction analysis has the potential to automatically identify learning behaviour.

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El texto muestra la evolución del componente destinado a incentivar el uso de la bicicleta en el marco de la política de movilidad de Bogotá desde Mockus hasta Petro y también el papel de la sociedad civil en el proceso de la reimplementación de dicho componente en la alcaldía de Moreno y en la de Petro.

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El objetivo del presente estudio fue conocer la acogida y atención prestada a las mujeres con demandas en salud mental en los servicios especializados para el afrontamiento de la violencia contra las mujeres y en la red de atención psicosocial y hospitalaria en el municipio de Natal (Rio Grande del Norte). En estos equipos, se investigó la acogida y procedimientos ofrecidos a las usuarias en situación de violencia, a través de entrevistas individuales con guiones semiestructurados entregados a los profesionales de referencia. Las entrevistas fueron analizadas a partir del referencial teórico del Análisis Institucional Francés, utilizándose el concepto-herramienta “analizador” para la interpretación de datos. Los resultados de la investigación revelaron dificultades por parte de los equipos en la acogida de estas usuarias, tanto en los servicios de enfrentamiento a la violencia como en los servicios de salud mental, resultando en internaciones psiquiátricas involuntarias e demás violencias institucionales.

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El objetivo de este estudio de caso es indagar sobre la influencia de la explotación petrolera en la (re)configuración territorial del municipio de Tauramena, desde el concepto de (re)configuración territorial que fue construido desde la conceptualización del espacio de Doreen Massey y Milton Santos. Para la realización de esta investigación se apela a fuentes primarias, constituidas principalmente por entrevistas a habitantes de Tauramena y visitas de campo. Como fuentes secundarias, se acudió a la revisión bibliográfica y cartográfica del municipio. Esta metodología permitirá diagnosticar y profundizar en dos de las variables que modificaron la configuración territorial del municipio: la migración y las regalías.

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Estudio de las taulas de Menorca, claro exponente de la cultura talayótica que se extendió por Mallorca y Menorca desde el 1800 a.C. hasta el 200 d.C. La taula está compuesta por dos grandes piedras en forma de T. Tras su análisis mediante cálculos aritméticos, geométricos y de carácter específico, se llega a la conclusión de que estas taulas siguen relaciones matemáticas. Entre las taulas estudiadas, destacan la de Binisafullet o Sa Torreta de Tramuntana.

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