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- Olsson, Krister, et al.
(författare)
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Structural change, cultural heritage and place
- 2005
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Ingår i: Sustainable Development and Planning II, Vols 1 and 2. - 1845640519 ; , s. 1509-1518
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Konferensbidrag (refereegranskat)abstract
- In the last few decades, many cities have experienced structural change with deindustrialisation and public closure as a result. Strategies for regeneration include investments in infrastructures for production, consumption and communication. The transformation process results in deteriorated urban environments, and a change in the use and understanding of the urban landscape. The article discusses structural change and infrastructure planning, and its consequences for cultural heritage and the sense of place. We take the theoretical position that an understanding of place is crucial for sustainable heritage management, and that cultural meanings are generated through a combination of people - place interactions in time and space. Empirical findings are based on a case study of infrastructure planning and heritage management in the town of Soderhamn in northern Sweden. The analysis shows that the planning and management refers to space rather than to qualities of place. A tentative model is presented to draw attention to the importance of comprehensive analysis of investments in infrastructure and its consequences for cultural heritage.
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- Sveningsson, Martin, 1977, et al.
(författare)
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Quantifying temperature-enhanced electron field emission from individual carbon nanotubes
- 2005
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Ingår i: Physical Review B. - : American Physical Society. ; 72:8
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Tidskriftsartikel (refereegranskat)abstract
- The electron field emission properties of individual multiwalled carbon nanotubes have been examined using a combined STM-TEM microscope. The measured electron emission, for low emission currents, can be fitted with a standard Fowler-Nordheim model. For higher electron emission, above 10 µA for an individual carbon nanotube, we observe a significantly increased emission current leading to a nonlinear Fowler-Nordheim plot. The nonlinearity is caused by thermally enhanced electron emission due to Ohmic heating of the carbon nanotube. This is verified by modeling the electron field emission current. In addition to the influence of radiative cooling and the temperature dependence of the nanotube resistivity, we clearly show that a consideration of the temperature change due to the electron emission process itself, known as the Nottingham effect, is crucial to obtain good agreement with the experimental data.
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