3,080 research outputs found

    Climate change adaptation and vulnerability assessment of water resources systems in developing countries: a generalized framework and a feasibility study in Bangladesh

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    Water is the primary medium through which climate change influences the Earth’s ecosystems and therefore people’s livelihoods and wellbeing. Besides climatic change, current demographic trends, economic development and related land use changes have direct impact on increasing demand for freshwater resources. Taken together, the net effect of these supply and demand changes is affecting the vulnerability of water resources. The concept of ‘vulnerability’ is not straightforward as there is no universally accepted approach for assessing vulnerability. In this study, we review the evolution of approaches to vulnerability assessment related to water resources. From the current practices, we identify research gaps, and approaches to overcome these gaps a generalized assessment framework is developed. A feasibility study is then presented in the context of the Lower Brahmaputra River Basin (LBRB). The results of the feasibility study identify the current main constraints (e.g., lack of institutional coordination) and opportunities (e.g., adaptation) of LBRB. The results of this study can be helpful for innovative research and management initiatives and the described framework can be widely used as a guideline for the vulnerability assessment of water resources systems, particularly in developing countries

    Further education in transition

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    This paper provides an overview of the national perspective in further education (FE) developments in Information and Learning Technology (ILT) since 1992, from the unique perspective of a number of key staff members at the British Educational Communications and Technology Agency (Becta) and a member of staff with a role in quality improvement in the Further Education Funding Council (FEFC). It sets in context the research reported in this section in the papers by Cockrill et al. and Caven‐Atack

    The use of geomagnetic field models in magnetic surveys

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    The importance of global geomagnetic field models for the reduction of magnetic surveys is discussed. It is demonstrated that a numerical model with adequate secular variation correction, provides a suitable representation of the regional field. The limitations of the presently available models are reported, with emphasis on the International Geomagnetic Reference Field

    Comparison of irradiation damage in artifical and natural graphite at different irradiation temperatures

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    COMPARISON Of IRRADIATION DAMAGE IN ARTIFICIAL AND NATURAL GRAPHITE AT DIFFERENTIRRADIATION TEMPERATURES. Results of irradiation experiments on artificial and natural graphite in the three temperature ranges 70 - 150°C, 300 - 400°C and 550 - 650°C are compared. These irradiation experiments were carried out in core or pool positions of tbe GETR. Vallecitos. The samples investigated received neutron doses up to 5x1021^{21} nvt with E > 0.17 eV, which is approximately 3X1O21^{21} nvt with E > 0.18 MeV. Changes in the lattice parameters. the electric and thermal conductivity, the macroscopic dimensions and the bending strength are discussed. The natural graphite samples investigated were manufactured partly with, partly without a binding material. The results obtained during these investigations indicate, in addition to the dependence on the irradiation temperature and the neutron dose, a strong influence exerted by tbe basic materials, the treatment during production and the density. Strong anisotropic effects in natural graphite at lower irradiation temperatures, resulting from the treatment during production, level out at higher irradiation temperatures
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