891 resultados para Hydric resources policy


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Tese (doutorado)—Universidade de Brasília, Centro de Desenvolvimento Sustentável, 2015.

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Dissertação (mestrado)—Universidade de Brasília, Instituto de Geociências, 2016.

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En este documento se presenta una síntesis del Seminario La Investigación y Gestión del Recurso H(drico en la Universidad Nacional, el cual fue organizado por el Programa Interdisciplinano de Investigación y Gestión del Agua de la Universidad Nacional (PRIGA-UNA). En esta actividad se dieron a conocer los resultados de las investigaciones relacionadas con los recursos hídricos, llevadas a cabo por distintos académicos de la Universidad Nacional (UNA). Este Seminario se realizó los días 25y26 de noviembre de 2004 y contó con una nutrida asistencia de académicos, estudiantes y demás interesados de la UNA, así como de otras instituciones y organizaciones nacionales. Abstract: This document is a synthesis of the Seminary: “Research and Management of the Hydnc Resource in the Universidad Nacional, Heredia, Costa Rica”, which was organized by the Programa Interdisciplinario de Investigación y Gestión del Agua, of the Universidad Nacional (PRIGA-UNA). In this activity several academics from the Universidad Nacional (UNA) presented the research results related to ihe hydric resources. This seminary was carried out 25 and 26 of November of 2004 and counted with participants of the UNA and from other Costa Rica’s institutions and organizations.

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The aim of this paper is to analyze how active R&D policies affect the growth rate of an economy with endogenous growth and non-renewable resources. We know from Scholz and Ziemens (1999) and Groth (2006) that in infinitely lived agents (ILA) economies, any active R&D policy increases the growth rate of the economy. To see if this result also appears in economies with finite lifetime agents, we developed an endogenous growth overlapping generations (OLG) economy à la Diamond which uses non-renewable resources as essential inputs in final good’s production. We show analytically that any R&D policy that reduces the use of natural resources implies a raise in the growth rate of the economy. Numerically we show that in economies with low intertemporal elasticity of substitution (IES), active R&D policies lead the economy to increase the depletion of non-renewable resources. Nevertheless, we find that active R&D policies always imply increases in the endogenous growth rate, in both scenarios. Furthermore, when the IES coefficient is lower (greater) than one, active R&D policies affect the growth rate of the economy in the ILA more (less) than in OLG economies.

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This is an electronic version of the accepted paper in the journal:Advances in the Economic Analysis of Participatory and Labor-Managed Firms. Volumen. 12

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This paper assesses the implications of climate policy for exposure to water resources stresses. It compares a Reference scenario which leads to an increase in global mean temperature of 4oC by the end of the 21st century with a Mitigation scenario which stabilises greenhouse gas concentrations at around 450ppm CO2e and leads to a 2oC increase in 2100. Associated changes in river runoff are simulated using a global hydrological model, for four spatial patterns of change in temperature and rainfall. There is a considerable difference in hydrological change between these four patterns, but the percentages of change avoided at the global scale are relatively robust. By the 2050s, the Mitigation scenario typically avoids between 16 and 30% of the change in runoff under the Reference scenario, and by 2100 it avoids between 43 and 65%. Two different measures of exposure to water resources stress are calculated, based on resources per capita and the ratio of withdrawals to resources. Using the first measure, the Mitigation scenario avoids 8-17% of the impact in 2050 and 20-31% in 2100; with the second measure, the avoided impacts are 5-21% and 15-47% respectively. However, at the same time, the Mitigation scenario also reduces the positive impacts of climate change on water scarcity in other areas. The absolute numbers and locations of people affected by climate change and climate policy vary considerably between the four climate model patterns.

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This paper critically explores the politics that mediate the use of environmental science assessments as the basis of resource management policy. Drawing on recent literature in the political ecology tradition that has emphasised the politicised nature of the production and use of scientific knowledge in environmental management, the paper analyses a hydrological assessment in a small river basin in Chile, undertaken in response to concerns over the possible overexploitation of groundwater resources. The case study illustrates the limitations of an approach based predominantly on hydrogeological modelling to ascertain the effects of increased groundwater abstraction. In particular, it identifies the subjective ways in which the assessment was interpreted and used by the state water resources agency to underpin water allocation decisions in accordance with its own interests, and the role that a desocialised assessment played in reproducing unequal patterns of resource use and configuring uneven waterscapes. Nevertheless, as Chile’s ‘neoliberal’ political-economic framework privileges the role of science and technocracy, producing other forms of environmental knowledge to complement environmental science is likely to be contentious. In conclusion, the paper considers the potential of mobilising the concept of the hydrosocial cycle to further critically engage with environmental science.

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Analiza el rol del sector agricola en el desarrollo economico de la region, con especial referencia a Trinidad y Tabago, y presenta una serie de consideraciones en favor de la asignacion de recursos y de la integracion de la investigacion agricola en los programas de desarrollo nacional.