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- Berlin, Johan, 1975-, et al.
(author)
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Typifiering eller normering? : En kritisk studie av teamteoretiska modeller
- 2009
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In: Företagsekonomisk ämneskonferens 2009. ; , s. 1-15
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Conference paper (peer-reviewed)abstract
- I den här studien fokuseras den starka passion som finns för typologier inom teamforskningen. Det finns typologier av teamprocesser, strukturella teamtyper och modeller för implementering av teamarbete. Vid första anblicken kan man i vissa fall få intrycket av att modellerna utvecklats utan att vara baserade på empiriska fynd och i andra fall att modeller blir en sorts självuppfyllande profetior som döljer möjligheten att urskilja variationer ur empiriska fynd.Syftet med denna artikel är att granska samband mellan ett antal typologier och diskutera varför teamarbete uttrycks som stegvisa utvecklingsmodeller. Speciellt fokus läggs på trestegsmodeller, så kallade triader.Vi har identifierat och analyserat fem teoretiska triader som beskriver teamarbete. Forskningsfrågan för denna artikel är: Är teamtypologierna värderande på så sätt att de särskiljer excellenta team från mindre framgångsrika, eller klassificerar de utan att värdera teamens grad av excellens? Är de teoretiska modellerna sorterande eller värderande?
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- Fransson, J.E.S., et al.
(author)
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Detection of clear-cuts using ALOS PALSAR satellite images
- 2008
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In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. - 2197-4403. ; 1-4
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Conference paper (peer-reviewed)abstract
- The objective of this study is to make a first evaluation of the possibilities to detect forest clear-cuts using high-resolution ALOS PALSAR FBD (Fine Beam Dual polarization) satellite images. New operational applications for mapping of changes in forest cover are of interest for government authorities in Sweden and in other countries with similar needs. The study was conducted in southern Sweden and included seven old coniferous stands located on flat terrain. Three of the stands were clear-felled and the remaining stands were left untreated for reference. Altogether, six PALSAR FBD images (look angle 34.3°, HH- and HV-polarization) acquired during the summer and fall seasons were analyzed. The difference in backscattering coefficient between the reference and the clear-felled stands was on average 2.4 dB and 2.9 dB for the HH- and HV-polarization, respectively. When comparing the backscattering coefficient before and after clear-felling the drop was found to be 1.7 dB and 2.3 dB for the HH- and HV-polarization, respectively.
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| 4. |
- Hashemi, J, et al.
(author)
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Haplotype analysis and age estimation of the 113insR CDKN2A founder mutation in Swedish melanoma families.
- 2001
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In: Genes, chromosomes & cancer. - : Wiley. - 1045-2257 .- 1098-2264. ; 31:2, s. 107-16
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Journal article (peer-reviewed)abstract
- Germline mutations in the CDKN2A tumor suppressor gene located on 9p21 have been linked to development of melanomas in some families. A germline 3-bp insertion in exon 2 of CDKN2A, leading to an extra arginine at codon 113 (113insR), has been identified in 17 Swedish melanoma families. Analysis of 10 microsatellite markers, spanning approximately 1 Mbp in the 9p21 region, showed that all families share a common allele for at least one of the markers closest to the CDKN2A gene, suggesting that the 113insR mutation is an ancestral founder mutation. Differences in the segregating haplotypes, due to meiotic recombinations and/or mutations in the short-tandem-repeat markers, were analyzed further to estimate the age of the mutation. Statistical analysis using a maximum likelihood approach indicated that the mutation arose 98 generations (90% confidence interval: 52-167 generations), or approximately 2,000 years, ago. Thus, 113insR would be expected to have a more widespread geographic distribution in European and North American regions with ancestral connections to Sweden. Alternatively, CDKN2A may lie in a recombination hot spot region, as suggested by the many meiotic recombinations in this narrow approximately 1-cM region on 9p21.
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