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- Lindblad, K.E.M., et al.
(författare)
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Generalization of heterogeneous alpine vegetation in air photo-based image classification, Latnjajaure catchment, northern Sweden
- 2006
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Ingår i: Pirineos. - Jaca : Instituto Pirenaico de Ecologia. - 0373-2568 .- 1988-4281. ; 161:3a32
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Tidskriftsartikel (refereegranskat)abstract
- Mapping alpine vegetation at a meso-scale (catchment level) using remote sensing presents difficulties due to a patchy distribution and heteregeneous spectral appearance of the plant cover. We discuss issues of generalization and accuracy assessment in this case study when using a digital CIR air photo for an automatic classification of the dominant plant communities. About 10 plant communities could be classified with acceptable accuracy where the chosen classification scheme determined the final outcome. If a high resolution pixel mosaic is generalized to units that match the positional accuracy of simple GPS this generalization may also influence the information content of the image
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| 4. |
- Östberg, Anna-Lena, 1949-, et al.
(författare)
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Adolescents perceptions of oral health and influencing factors : A qualitative study
- 2002
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Ingår i: Acta Odontolologica Scandinavica. - : Informa Healthcare. - 0001-6357 .- 1502-3850. ; 60:3, s. 167-173
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Tidskriftsartikel (refereegranskat)abstract
- Accounts of self-perceptions of oral health have hitherto been rare, although they are of great interest for strategies in health promotion. The objective of this study was to increase our knowledge of adolescents perceptions of oral health and influencing factors.Semi-structured interviews of 17 Swedish adolescents were performed. Criteria for strategic sampling were age (15, 18 years), gender (male, female), and dental health (healthy, unhealthy). Data were analyzed according to the constant comparative method. Areas of focus were general oral health, personal oral health, dental care, and life-style issues.Oral health awareness was generally low among the informants. Two categories of oral health were identified: action (the physical things we do to effect the condition of our mouths) and condition (the physical status of the mouth). Conditional aspects were most frequent in evaluations of personal oral health. The informants considered their possibilities to influence oral health limited. Perceptions of influences on oral health were related to personal and professional care, social support and impact, and external factors. Concern for oral health was derived as the core category in perceived influence on oral health. This study indicates that it is important to find factors that enhance adolescents awareness of their own resources and to seek mechanisms that govern internalization. There is a need to find strategies to convey such knowledge to the intermediaries: the dental personnel and the parents.
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- Östberg, Anna-Lena, et al.
(författare)
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Adolescents Perceptions of Oral Health and Influencing Factors
- 2001
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Konferensbidrag (refereegranskat)abstract
- Introduction: Accounts on self-perceptions of oral health have hitherto been rare, although of great interest for strategies in health promotion. Purpose: The objective of this study was to increase the knowledge on adolescents perceptions of oral health and influencing factors.Methods: Semistructured interviews of 17 Swedish adolescents were performed. Criteria for strategic sampling were age (15, 18 years), gender (male, female), and dental health (healthy, unhealthy). Data were analysed according to the constant comparative method. Areas of focus were general oral health, personal oral health, life-style issues and dental care.Results: The awareness of oral health was mostly low among the informants. Two categories of oral health were identified, action and condition. Conditional aspects were most frequent in evaluations of personal oral health. Possibilities to influence oral health were considered limited. Perceptions of influences on oral health were related to personal and professional care, social support and impact, and external factors. Gender differences were indicated in health consciousness. Concern for oral health was denoted the core category of perceived influence.
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