| 1. |
- Boström, Petra, 1972, et al.
(författare)
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Subjective Mental Health, Peer Relations, Family, and School Environment in Adolescents with Intellectual Developmental Disorder: A First Report of a New Questionnaire Administered on Tablet PCs
- 2016
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Ingår i: Journal of Mental Health Research in Intellectual Disabilities. - : Informa UK Limited. - 1931-5864 .- 1931-5872. ; 9:4, s. 207-231
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Tidskriftsartikel (refereegranskat)abstract
- Few studies have explored the subjective mental health of adolescents with intellectual disabilities, while proxy ratings indicate an overrepresentation of mental health problems. The present study reports on the design and an initial empirical evaluation of the Well-being in Special Education Questionnaire (WellSEQ). Questions, response scales, and an application for tablet PCs were developed in cooperation with students and teachers in special education schools. One hundred and thirteen students (age 12-16) and their parents and teachers participated. Positive results in terms of test-retest reliability, internal consistency of scales, and response rates were obtained. Level of reading appeared to affect the students' understanding of items. Teachers' and parents' ratings on the WellSEQ correlated well with established measures. Correlations between proxy ratings and students' reports varied. The questionnaire and technology of WellSEQ may enable students with IDD to participate independently in research with good completion rates and reliable responding.
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| 2. |
- Jelica, Darijan, et al.
(författare)
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Hourly electricity demand from an electric road system – A Swedish case study
- 2018
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Ingår i: Applied Energy. - : Elsevier BV. - 0306-2619 .- 1872-9118. ; 228, s. 141-148
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Tidskriftsartikel (refereegranskat)abstract
- This study investigates the hourly electricity demand related to implementing an electric road system (ERS) on five Swedish roads with the highest traffic flows that connect the three largest cities in Sweden. The study also compares the energy demands and the CO2 mitigation potentials of the ERS with the use of carbon-based fuels to obtain the same transportation work, and extrapolates the results to all Swedish European- and National- (E- and N) roads. The hourly electricity demand along the roads are derived by linking 12 available measurement points for hourly road traffic volumes with 12,553 measurement points for the average daily traffic flows along the roads. The results show that applying an ERS to the five Swedish roads with the highest traffic flows can reduce by ∼20% the levels of CO2 emissions from the road transport sector, while increasing by less than 4% the hourly electricity demand on the peak dimensioning hour. Extending the ERS to all E- and N-roads would electrify almost half of the vehicle kilometers driven annually in Sweden, while increasing the load of the hourly peak electricity demand by only ∼10% on average.
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| 3. |
- Johansson, Viktor, 1991, et al.
(författare)
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Value of wind power – Implications from specific power
- 2017
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Ingår i: Energy. - : Elsevier BV. - 0360-5442. ; 126, s. 352-360
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Tidskriftsartikel (refereegranskat)abstract
- This paper investigates the marginal system value of increasing the penetration level of wind power, and how this value is dependent upon the specific power (the ratio of the rated power to the swept area). The marginal system value measures the economic value of increasing the wind power capacity. Green-field power system scenarios, with minimised dispatch and investment costs, are modelled for Year 2050 for four regions in Europe that have different conditions for renewable electricity generation. The results show a high marginal system value of wind turbines at low penetration levels in all four regions and for the three specific powers investigated. The cost-optimal wind power penetration levels are up to 40% in low-wind-speed regions, and up to 80% in high-wind–speed regions. The results also show that both favourable solar conditions and access to hydropower benefit the marginal system value of wind turbines. Furthermore, the profile value, which measures how valuable a wind turbine generation profile is to the electricity system, increases in line with a reduction in the specific power for wind power penetration levels of >10%. The profile value shows that the specific power becomes more important as the wind power penetration level increases. © 2017 Elsevier Ltd
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| 4. |
- Nilsson, Andreas, 1974, et al.
(författare)
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The Gothenburg Congestion Tax: Attitude Changes Before and After the Implementation
- 2015
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Ingår i: 11th Biennial Conference on Environmental Psychology, Groningen 2015.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Attitudes and beliefs concerning the Gothenburg congestion tax were investigated in a three- wave panel study, twice before and once after the implementation. Participants were approximately 5000 respondents living in the Gothenburg area. A very large part of the variance of the attitudes towards the taxes was explained by policy specific beliefs. Environmental outcomes (positively) and value expressive beliefs (negatively) were the strongest predictors to attitudes towards the tax. The policy specific beliefs mediated the effects of values on attitudes towards the tax. Attitudes were more positive after the implementation compared to before. Respondents perceived the system as easier to use and experienced less negative individual outcomes after the implementation compared to before. The most important predictors (before the implementation) of the change in attitudes after the implementation were value expressive beliefs (negatively), Environmental outcomes, and procedural fairness (positively). The results are discussed in relation to previous similar implementations and to cognitive dissonance theory.
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| 5. |
- Nilsson, Andreas, 1974, et al.
(författare)
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The Road to Acceptance: Attitude Change Before and After the Implementation of a Congestion Tax
- 2016
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Ingår i: Journal of Environmental Psychology. - : Elsevier BV. - 0272-4944. ; 46, s. 1-9
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Tidskriftsartikel (refereegranskat)abstract
- Attitudes and beliefs concerning a congestion tax in Gothenburg, Sweden, were investigated in a three-wave panel with 4738 respondents, twice before and once after the implementation. Attitudes were more positive after the implementation. Perceived environmental outcomes and value expressive beliefs were most strongly related to attitudes toward the tax. Respondents' perceived the system as easier to use and experienced less negative outcomes after the implementation compared to the expectations before. The most important variable in explaining the change in attitudes (before the implementation) was value expressive beliefs. The results indicate that the most strongly related beliefs both for explaining attitudes and the change in attitudes after the implementation are abstract in nature. The attitudes are grounded in emotional and value-related motives, rather than the more specific expected outcomes of the scheme.
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| 6. |
- Ryberg, Carmen, et al.
(författare)
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Intellectual Functioning in Children with Congenital Heart Defects Treated with Surgery or by Catheter Interventions.
- 2016
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Ingår i: Frontiers in pediatrics. - : Frontiers Media SA. - 2296-2360. ; 4
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Tidskriftsartikel (refereegranskat)abstract
- Studies suggest that children with congenital heart defects (CHD) are at risk for adverse intellectual functioning. However, factors related to lower intellectual functioning in this group are largely unknown. This study describes intellectual functioning in children with CHD in relation to severity of the heart defect, the child's age, and the socioeconomic status of the family (SES).Two hundred twenty-eight children treated with surgery or by catheter technique were tested using the Wechsler intelligence scales to determine full scale IQ (FSIQ). FSIQ was then analyzed in relation to age (3-, 5-, 9-, and 15-year olds), severity of the diagnosis (mild, moderate, and severe), and SES (low, medium, and high). The median age was 70months (5.8years) with a range of 162months [30months (2.5years) to 192months (16.0years)].The total mean score on FSIQ was 100.8 (SD=14.5). Children with severe CHD had significantly lower FSIQ than children with mild and moderate CHD, and 9- and 15-year olds had significantly lower FSIQ compared to the 3-year olds. Children from families with low SES had significantly lower FSIQ than children from medium SES and high SES families. No interaction between severity of diagnosis, age, and SES was found for FSIQ.Eighty-three percent of the children with CHD performed at or above average with respect to FSIQ. SES and severity of diagnosis had significant main effects on FSIQ. These factors should be considered when planning interventions and follow-up programs for children with CHD.
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| 7. |
- Taljegård, Maria, 1988, et al.
(författare)
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Electric road systems in Norway and Sweden-impact on CO2 emissions and infrastructure cost
- 2017
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Ingår i: 2017 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2017; Hotel VictoriesHarbin; China; 7 August 2017 through 10 August 2017.
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Konferensbidrag (refereegranskat)abstract
- This study investigates a large-scale implementation of electric road system (ERS) in Norway and Sweden by analysing (i) which roads, (ii) how much of the road network and (iii) what vehicle types that are beneficial to electrify based on analysis of road traffic volumes, CO2 emissions mitigation potential and infrastructure investment costs per vehicle kilometre. All European and National roads in Norway and Sweden have been included assuming different degrees of electrification in terms fraction of the road length with ERS, prioritizing high traffic roads. The results show similar effect from ERS in Norway and Sweden. Implementing ERS on 25% of the busiest European and National road length in both countries is enough to result in an electrification of approximately 70% of the vehicle kilometres on these roads and 35% of the total vehicle kilometres on all roads. An ERS on all European and National roads will include 60 and 70% of the vehicle kilometres and CO2 emissions from all heavy traffic in Norway and Sweden, respectively. The results also show that aiming to electrify more than 50% of the light vehicles with ERS implies that also county roads and private roads need to be included. For a majority of the European and National roads, the infrastructure investment cost per vehicle kilometre are low compare to the current cost for diesel per kilometre assuming a depreciation time of ERS investments of 35 years.
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| 8. |
- Taljegård, Maria, 1988, et al.
(författare)
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Large-scale implementation of electric road systems: Associated costs and the impact on CO2 emissions
- 2020
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Ingår i: International Journal of Sustainable Transportation. - : Informa UK Limited. - 1556-8318 .- 1556-8334. ; 14:8, s. 606-619
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Tidskriftsartikel (refereegranskat)abstract
- This study investigates a large-scale implementation of an electric road system (ERS) in Norway and Sweden by identifying: (i) which roads; (ii) how much of the road network; and (iii) which vehicle types are beneficial to electrify based on an analysis of current road traffic volumes, CO2 emissions mitigation potential, and infrastructure investment costs. All the European (E) and National (N) roads in Norway and Sweden were included, while assuming different degrees of electrification in terms of the fraction of the road length with an ERS, prioritizing roads with high-traffic loads. The results show that implementing an ERS already for 25% of the E- and N-road lengths could result in electrification of 70% of the traffic on these roads, as well as 35% of the total vehicle kilometers in Norway and Sweden. The ERS will then connect some of the larger cities with ERS. Installation of ERS on all the E- and N-roads in the two countries would cover more than 60% of the CO2 emissions from all heavy traffic assuming all vehicles run on electricity. For roads with an average daily traffic of >6800 and >1200 vehicles per day, the costs of infrastructure investment are ∼0.03 € 2016 per vkm and ∼0.15 € 2016 per vkm, respectively. Thereby, for roads with high traffic volumes using an ERS, the total driving cost per km using an ERS (0.23–0.55 € 2016 per vkm) does not seem to be an issue. Light vehicles appear to be important bringing down the ERS infrastructure cost.
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| 9. |
- Thorson, Maria, et al.
(författare)
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Att semestra hållbart? : En kartläggning av vad hållbart semestrande kan innebära
- 2019
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Denna rapport har tagits fram inom forskningsprogrammet Mistra Sustainable Consumption – från nisch till mainstream som engagerar forskare från olika vetenskapliga discipliner och samhällspartners från offentlig sektor, näringsliv och civilsamhälle. Syftet med programmet är att stimulera en övergång till mer hållbar konsumtion. Forskningen är finansierad av Mistra, Stiftelsen för miljöstrategisk forskning, samt med medfinansiering från samtliga deltagande universitet och samhällspartners.
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