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| 2. |
- Andersson, Anderz, 1953-, et al.
(författare)
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Arbetsrätt
- 2021. - 7
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- Syftet med den här boken är att ge läsaren grundläggande kunskaper i arbetsrätt och den svenska modellen. I fokus för framställningen står den arbetsrättsliga lagstiftningens framväxt, arbetsmarknadens parter, medbestämmande, anställningsskydd, arbetsmiljö och skydd mot diskriminering. Andra områden som behandlas är arbetstidsregleringen och ledighetslagstiftningen. Vidare behandlas EU-arbetsrättens inverkan på den svenska lagstiftningen.
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| 3. |
- Andersson, Staffan, 1952-, et al.
(författare)
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Building performance based on measured data
- 2011
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Ingår i: World Renewable Energy Congress – Sweden, 8–13 May, 2011, Linköping, Sweden. - Linköping : Linköping University Electronic Press. - 9789173930703 ; , s. 899-906
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Konferensbidrag (refereegranskat)abstract
- With increasing liability for builders, the need for evaluation methods that focuses on the building’s performance and thus excludes the impact from residents’ behavior increases. This is not only of interest for new buildings but also when retrofitting existing buildings in order to reduce energy end-use. The investigation in this paper is based on extensive measurements on two fairly representative type of buildings, a single family building in Ekerö, Stockholm built 2000 and two apartment buildings in Umeå (1964) in order to extract key energy performance parameters such as the building’s heat loss coefficient, heat transfer via the ground and heat gained from the sun and used electricity. With access to pre-processed daily data from a 2-month periods, located close to the winter solstice, a robust estimate of the heat loss coefficient was obtained based on a regression analysis. For the single family building the variation was within 1% and for the two heavier apartment buildings an average variation of 2%, with a maximum of 4%, between different analyzed periods close to the winter solstice. The gained heating from the used electricity in terms of a gain factor could not be unambiguously extracted and therefore could only a range for the heat transfer via ground be estimated. The estimated range for the transfer via ground for the two apartment buildings were in very good agreement with those calculated according to EN ISO 13 370 and corresponded to almost 10% of the heating demand at the design temperature. For the single family building with an insulated slab and parts of the walls below ground level, the calculations gave slightly higher transfer than what was obtained from the regression analysis. For the estimated gained solar radiation no comparison has been possible to make, but the estimated gain exhibited an expected correlation with the global solar radiation data that was available for the two apartment buildings.
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| 5. |
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| 6. |
- Andersson, Staffan, 1952-, et al.
(författare)
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Thermal conductivity and heat capacity of amorphous SiO2 : pressure and volume dependence
- 1992
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Ingår i: Journal of Physics. - : Institute of Physics (IOP). - 0953-8984 .- 1361-648X. ; 4:29, s. 6209-6216
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Tidskriftsartikel (refereegranskat)abstract
- The thermal conductivity (lambda) and heat capacity per unit volume (rho-c(p)) of amorphous SiO2 have been measured under hydrostatic pressure up to 1 GPa at room temperature using a transient two-strip method. The thermal conductivity was found to decrease slightly with increasing pressure. For the volume dependence of lambda expressed by the Bridgman parameter, g = -(partial derivative ln lambda/partial derivative ln V)T, we obtained g = -1.5. The experimental value of g is discussed in conjunction with predicted g-values based on theoretical models of lambda(T). The specific heat capacity (c(p)) calculated from measured rho-c(p) was found to be almost constant with increasing pressure.
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| 7. |
- Andersson, Staffan, 1952-
(författare)
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Utvärdering av energieffektiva armaturer
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten redovisar en genomförd uppföljning av den erhållna minskningen av varm- respektive kallvattenanvändningen genom installation av energieffektiva armaturer. Utvärderingen baseras på 23 månaders mätningar av den individuella vattenanvändningen i sjuttiosju lägenheter (21 test-samt 56 referenslägenheter). Testlägenheterna utrustades först med en tidigare generations vattenarmaturer, FM Mattsson serie 9000, vilka senare ersattes med den senaste generationens armaturer FM Mattson serie 9000E. I fem av dessa lägenheter har dessutom komplementerande mätningar gjorts vid de olika tappställena, WC undantagen. Användningen av varm- och kallvattenanvändningen i varje lägenhet har loggats med en tidsupplösning om 10 minuter. För att undvika påverkan av boendes frånvaro från lägenheterna har uppföljningen baserats på den genomsnittliga dygnsanvändningen av vatten för de tider de boende har nyttjat lägenheten. Lägenheter där byte av hyresgäster har skett under utvärderingsperioden har lämnats utanför utvärderingen. De erhållna resultaten visar på en besparing om cirka 30% avseende varmvattenanvändningen samt 15% avseende kallvatten jämfört med referensgruppen. Den erhållna uppskattningen är också konsistent med en teoretisk uppskattning av besparingen baserad på den mätta förändringen av kvoten mellan varmvatten- och kallvattenanvändningen i testlägenheterna.
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| 8. |
- Enghag, Margareta, 1952-, et al.
(författare)
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Student evaluations of themselves as disciplinary practitioners
- 2009
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Ingår i: Paper presented at the GIREP-EPEC (International Research Group on Physics Teaching) Conference, University of Leicester, Great Britain, 17-21 August.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 9. |
- Feng, Kailun, et al.
(författare)
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Energy-efficient retrofitting with incomplete building information : a data-driven approach
- 2022
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Ingår i: E3S web of conferences. - : EDP Sciences.
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Konferensbidrag (refereegranskat)abstract
- The high-performance insulations and energy-efficient HVAC have been widely employed as energy-efficient retrofitting for building renovation. Building performance simulation (BPS) based on physical models is a popular method to estimate expected energy savings for building retrofitting. However, many buildings, especially the older building constructed several decades ago, do not have full access to complete information for a BPS method. To address this challenge, this paper proposes a data-driven approach to support the decision-making of building retrofitting under incomplete information. The data-driven approach is constructed by integrating backpropagation neural networks (BRBNN), fuzzy C-means clustering (FCM), principal component analysis (PCA), and trimmed scores regression (TSR). It is motivated by the available big data sources from real-life building performance datasets to directly model the retrofitting performances without generally missing information, and simultaneously impute the case-specific incomplete information. This empirical study is conducted on real-life buildings in Sweden. The result indicates that the approach can model the performance ranges of energy-efficient retrofitting for family houses with more than 90% confidence. The developed approach provides a tool to predict the performance of individual buildings from different retrofitting measures, enabling supportive decision-making for building owners with inaccessible complete building information, to compare alternative retrofitting measures.
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| 10. |
- Lindh, Magnus, 1960, et al.
(författare)
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Real-time Taqman PCR targeting 14 human papilloma virus types.
- 2007
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Ingår i: Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology. - : Elsevier BV. - 1386-6532. ; 40:4, s. 321-4
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Subtyping of human papilloma virus (HPV) may enhance the precision of vaginal cytological assessments and will be important for investigating the effect of the recently introduced vaccine against types 16 and 18. OBJECTIVES AND STUDY DESIGN: To evaluate an in-house real-time PCR targeting HPV types 16-18-31-33-35-39-45-51-52-56-58-59-6-11, by analysing 107 liquid-based cytology specimens representing various degrees of dysplasia. RESULTS: In all, 71 samples were HPV positive, with multiple types present in 37 (52%). Comparison with Roche Linear Array on a subset of 24 of these 71 samples showed a good agreement. One or several types were detected in 17/17 (100%) samples with cervical intraepithelial neoplasia grade 2-3 (CIN 2-3), 16/19 (84%) with CIN 1, 32/43 (74%) with Atypical Squamous Cells of Undetermined Significance (ASCUS), and in 6/28 (21%) with benign cytology. Estimates of mean viral load were lower in CIN 1-3 than in ASCUS ( approximately 4000 vs. approximately 25,000 copies/1000 cells), and clearly lower in samples with benign cytology ( approximately 50 copies/1000 cells). CONCLUSION: The HPV rates in groups with different degrees of dysplasia agrees with previous reports and support a strong link between types 16/18 and severe dysplasia. The high rate of multiple type infection might influence the outcome of HPV vaccination. The possible importance of viral load should be further studied.
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