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RISS 인기검색어
- 검색키워드
- 저자 : Mattee, A.Z. (검색결과 6 건)
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Mattee, A.Z,Mahonge, C.P.I,Nsenga, J.V,Nindi, S.,H. Kayeye 한국외국어대학교(글로벌캠퍼스) 아프리카연구소 2010 Asian Journal of African Studies Vol.28 No.-
The mountainous areas are made of multiple and diverse natural resources with multiple uses as well as intricate interactions of socio‐economic and ecological interests. These interests are constructed on and governed by institutions. Both the resource use patterns and institutions are dynamic spatially and temporally and these changes determine sustainability of natural resource systems. This research used a methodology combing quantitative and qualitative techniques to study institutional and resource use pattern shifts in Mvuha watershed situated in the East Uluguru Mountains and implications of these shifts on sustainable management of the watershed. The analysis shows that institutional and resource use patterns have changed simultaneously but with some spatial and temporal congruencies and tensions. While the main institutional shifts occurred from traditional management regime through formal state‐centred management regime to the current collaborative institutional framework, the resource use shift was translated in changes in vegetation cover mainly due to the following anthropogenic factors. However, at some temporal points, changes in the institutions could not result in anticipated changes in resource use patterns. The analysis has further uncovered that the failure of centralised governmental efforts to effectuate sustainable natural resources management has led to the re‐accommodation of local institutions in the management regimes. However, local institutions should not be viewed monolithically and simplistically because within the local field exist diverse local institutions wherein some support sustainable natural resources management while others constrain this virtue. It is concluded that, first, thorough understanding of the informal institutional framework is imperative before formal institutional arrangements are proposed. Second, sustainable natural resource management cannot be attained until alternative livelihood strategies for the local people to meet their basic needs are considered and integrated.
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Mattee, A.Z.,Mahonge, C.P.I.,Nsenga, J.V.,Nindi S.,H. Kayeye 한국외국어대학교 아프리카연구소 2010 Asian Journal of African Studies Vol.28 No.-
The mountainous areas are made of multiple and diverse natural resources with multiple uses as well as intricate interactions of socio-economic and ecological interests. These interests are constructed on and governed by institutions. Both the resource use patterns and institutions are dynamic spatially and temporally and these changes determine sustainability of natural resource systems. This research used a methodology combing quantitative and qualitative techniques to study institutional and resource use pattern shifts in Mvuha watershed situated in the East Uluguru Mountains and implications of these shifts on sustainable management of the watershed. The analysis shows that institutional and resource use patterns have changed simultaneously but with some spatial and temporal congruencies and tensions. While the main institutional shifts occurred from traditional management regime through formal state-centred management regime to the current collaborative institutional framework, the resource use shift was translated in changes in vegetation cover mainly due to the following anthropogenic factors. However, at some temporal points, changes in the institutions could not result in anticipated changes in resource use patterns. The analysis has further uncovered that the failure of centralised governmental efforts to effectuate sustainable natural resources management has led to the re-accommodation of local institutions in the management regimes. However, local institutions should not be viewed monolithically and simplistically because within the local field exist diverse local institutions wherein some support sustainable natural resources management while others constrain this virtue. It is concluded that, first, thorough understanding of the informal institutional framework is imperative before formal institutional arrangements are proposed. Second, sustainable natural resource management cannot be attained until alternative livelihood strategies for the local people to meet their basic needs are considered and integrated.
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matte kishore babu,Ho-Girl Lee,A. Gezaei Abera,H. J. Kim,C. S. Seok,S. J. Song 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.1
Adoption of thermal barrier coatings (TBC) will help to improve the durability and thermal efficiency of turbine engines. Delamination of TBC owing to thermally grown metal oxides is a critical issue that needs periodical evaluation to ensure safety and effective maintenance for the financial benefits of industry. In this paper, a methodical approach using ultrasonic C-scan technique for quantitative evaluation of partial delamination area in TBC specimens was investigated. Preliminary studies were conducted using acoustic simulations and the experiments were carried out on a set of coin shaped TBC specimens prepared using plasma spray technique and isothermally degraded at 1100 °C for 25 h, 50 h, 100 h, and 150 h. Ultrasonic C-scans were performed using pulse echo technique with incident ultra sound radiation inclined normal to the surface of base metal of TBC system. Delamination maps of respective specimens were formulated from ultrasonic signals through proper signal processing and analysis techniques and the degree of delamination was evaluated with the help of existed mathematical model. The simulation results shows good agreement with the experimental data and this approach shows ability to estimate the degree of delamination from base metal surface.
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