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- Niklewski, Jonas, et al.
(author)
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Simplified environmental analysis of the long-term performance of wood cladding and decking
- 2023
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In: 13th World Conference on Timber Engineering, WCTE 2023. - 9781713873273 - 9781713873297 ; 1, s. 549-557
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Conference paper (peer-reviewed)abstract
- The performance of timber in exposed environments is affected by several biotic and abiotic factors. For timber cladding and decking, two important aspects include reduced structural performance due to fungal decay and aesthetical changes resulting from superficial effects such as photodegradation and moulds. Predicting the long-term performance of timber is important because it enables rational material (species and treatment) and design (detailing) choices and reduce the risks of unexpected repairs and premature replacement of timber products. In this paper, we use available data on material performance in conjunction with environmental analysis to model, in a simplified way, (1) the time until onset of fungal decay and (2) the long-term aesthetical appearance of timber facades and decking. The results demonstrate how the analysis canbe used on a detailed geometry where wooden boards were modelled as separate objects and the choice of material affects the outcome. Several steps needing further development were identified, including a dose model linking microclimate to colour change and a better model for predicting moisture content. The study is part of a long-term effort to make holistic performance-based assessment of wood available for public use through easy-to-use procedures and accessible open-source software.
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- Samuels, A., et al.
(author)
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Children in south africa with and without intellectual disabilities’ rating of their frequency of participation in everyday activities
- 2020
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In: International Journal of Environmental Research and Public Health. - : MDPI. - 1661-7827 .- 1660-4601. ; 17:18, s. 1-12
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Journal article (peer-reviewed)abstract
- In a low-and middle-income country (LMIC) such as South Africa, not much is known about how children with intellectual disabilities (ID) participate in everyday activities, as no studies to date have compared their participation to peers without ID from the same background. Using a newly developed, contextually valid measure of participation, Picture my Participation (PmP), 106 children with (73) and without ID (33), rated their frequency of participation in activities of daily living. Previous international research has established that children with ID tend to participate less frequently than children without ID in everyday activities outside of the school setting. However, much of this research is based on proxy ratings from caregivers rather than children with ID themselves. There is a growing body of evidence that suggests children with disabilities have uniquely different views of their own participation than their caregivers. The existing research evidence is also delimited to studies conducted predominantly in high income contexts (HICSs). Since it is universally acknowledged that participation patterns are affected by the environment, it is important to evaluate the generalizability of the current evidence to LMICs. The current study found that there were many similar patterns of participation between the two groups although significant differences were noted in social, community, leisure and self-care activities. We compare these results to findings from studies conducted in HICs and find that there are similarities but also differences across contexts. This study highlights the importance of gaining a child’s perspective of participation and understanding how intellectual disability can affect participation relative to peers without ID in LMICS.
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