| 11. |
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| 12. |
- Almén, Niclas, et al.
(author)
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Validation of the new brief 6-item version of the Shirom-Melamed Burnout Measure
- 2023
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In: Cogent Psychology. - : Taylor & Francis. - 2331-1908. ; 10:1
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Journal article (peer-reviewed)abstract
- The Shirom-Melamed Burnout Questionnaire/Measure (SMBQ/M) is one of the most commonly used measures of burnout. Using confirmatory factor analyses, the present study aimed to evaluate the model fit, composite reliability, and factorial (i.e. convergent and discriminant) validity of the new brief Swedish version of the scale-labeled SMBM-6. In addition, we used Cronbach’s α as an indicator of the internal consistency of the total scale. The SMBM-6 consists of two subscales: the emotional and physiological exhaustion subscale (three items) and the cognitive weariness subscale (three items). A total of 1251 teachers in Sweden were included in the study. The analyses showed that the Swedish version of the SMBM-6 has an excellent model fit and good convergent validity. The discriminant validity for the cognitive weariness subscale was good, but slightly inadequate for the physiological exhaustion subscale. Composite reliability and Cronbach’s α indicated high internal consistency for the subscales and the total scale, respectively. Multi-group invariance tests for age indicated no violation of invariance. These results are consistent with those of the study by Almén and Jansson (2021), in which the SMBM-6 was developed, and a subsequent psychometric study by Sundström et al. (2022). In conclusion, there is strong support for the Swedish version of the SMBM-6 as a reliable and valid scale for measuring burnout. Testing the scale in languages other than Swedish is warranted.
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| 13. |
- Almqvist, Jonas, 1968-, et al.
(author)
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Pragmatiska studier av meningsskapande
- 2008
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In: Utbildning och Demokrati. - 1102-6472 .- 2001-7316. ; 17:3, s. 11-24
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Journal article (peer-reviewed)abstract
- The overall aim of the article is to present a pragmatic approach for studies of meaning-making used in the articles of this issue. The approach, which is developed within the SMEDgroup (Studies of Meaning-making in Educational Discourses), mainly builds on the writings of John Dewey, Ludwig Wittgenstein and Michel Foucault. A common ambition for the researchers in SMED is to enable studies and discussions on questions concerning how meanings are made in people’s actions. Another ambition is to carry out these studies beyond assumptions of dualism, essentialism, causality and determinism. In this perspective learning and socialization are viewed in a communicative perspective. We argue in the article that our approach makes it possible, and important, to study meaning-making in action in different kinds of educational practices.
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| 14. |
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| 15. |
- Alström, Börje, et al.
(author)
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Landsortstidningens framtida affärsidé
- 2002
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In: Dagens medieföretag - morgondagens affärsidé. - Sundsvall : Mitthögskolan, Sundsvall. ; , s. 139-146, s. 139-145
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Book chapter (other academic/artistic)
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| 16. |
- Alström, Börje, et al.
(author)
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Medieföretag utan strategier
- 2005
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In: På väg mot medievärlden 2020. - Lund : Studentlitteratur. - 9789144038391 ; , s. 334-, s. 115-135
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Book chapter (other academic/artistic)
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| 17. |
- Andersson, Andreas, et al.
(author)
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Air-sea gas transfer in high Arctic fjords
- 2017
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In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 44:5, s. 2519-2526
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Journal article (peer-reviewed)abstract
- In Arctic fjords and high-latitude seas, strong surface cooling dominates during a large part of the year, generating water-side convection (w*w) and enhanced turbulence in the water. These regions are key areas for the global carbon cycle; thus, a correct description of their air-sea gas exchange is crucial. CO2-data were measured via the eddy covariance technique in marine Arctic conditions and reveal that water-side convection has a major impact on the gas transfer velocity. This is observed even at wind speeds as high as 9 m s-1, where convective motions are generally thought to be suppressed by wind-driven turbulence. The enhanced air-sea transfer of CO2 caused by water-side convection nearly doubled the CO2uptake, after scaled to open sea conditions the contribution from to the CO2 flux remained as high as 34%; this phenomenon is expected to be highly important for the total carbon uptake in marine Arctic areas.
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| 18. |
- Andersson, Andreas, et al.
(author)
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Enhanced Air–Sea Exchange of Heat and Carbon Dioxide Over a High Arctic Fjord During Unstable Very-Close-to-Neutral Conditions
- 2019
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In: Boundary-layer Meteorology. - : Springer Science and Business Media LLC. - 0006-8314 .- 1573-1472. ; 170:3, s. 471-488
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Journal article (peer-reviewed)abstract
- Eddy-covariance measurements made in the marine atmospheric boundary layer above a high Arctic fjord (Adventfjorden, Svalbard) are analyzed. When conditions are unstable, but close to neutral −0.1 < z/L < 0, where z is the height, and L is the Obukhov length, the exchange coefficient for sensible heat CH is significantly enhanced compared with that expected from classical surface-layer theory. Cospectra of the vertical velocity component (w) and temperature (T) reveal that a high-frequency peak develops at f ≈ 1 Hz for z/L > − 0.15. A quadrant analysis reveals that the contribution from downdrafts to the vertical heat flux increases as conditions become close to neutral. These findings are the signature of the evolving unstable very-close-to-neutral (UVCN) regime previously shown to enhance the magnitude of sensible and latent heat fluxes in the marine surface layer over the Baltic Sea. Our data reveal the significance of the UVCN regime for the vertical flux of the carbon dioxide (CO2) concentration (C). The cospectrum of w and C clearly shows how the high-frequency peak grows in magnitude for z/L > − 0.15, while the high-frequency peak dominates for z/L > − 0.02. As found for the heat flux, the quadrant analysis of the CO2 flux shows a connection between the additional small-scale turbulence and downdrafts from above. In contrast to the vertical fluxes of sensible and latent heat, which are primarily enhanced by the very different properties of the air from aloft (colder and drier) during UVCN conditions, the increase in the air–sea transfer of CO2 is possibly a result of the additional small-scale turbulence causing an increase in the water-side turbulence. The data indicate an increase in the gas-transfer velocity for CO2 for z/L > − 0.15 but with a large scatter. During the nearly 2 months of continuous measurements (March–April 2013), as much as 36% of all data are associated with the stability range −0.15 < z/L < 0, suggesting that the UVCN regime is of significance in the wintertime Arctic for the air–sea transfer of heat and possibly also CO2.
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| 19. |
- Andersson, Andreas, et al.
(author)
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Using a High-Frequency Fluorescent Oxygen Probe in Atmospheric Eddy Covariance Applications
- 2014
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In: Journal of Atmospheric and Oceanic Technology. - : American Meteorological Society. - 0739-0572 .- 1520-0426. ; 31:11, s. 2498-2511
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Journal article (peer-reviewed)abstract
- During the years 2010-13, atmospheric eddy covariance measurement of oxygen was performed at the marine site Ostergarnsholm in the Baltic Sea. The fast response optode Microx TX3 was used with two different types of tapered sensors. In spite of the increased lifetime, the optical isolated sensor is limited by the slower response time and is unsuitable for ground-based eddy covariance measurements. The sensor without optical isolation shows a -2/3 slope within the inertial subrange and attains sufficient response time and precision to be used in air-sea applications during continuous periods of 1-4 days. Spectral and cospectral analysis shows oxygen measured with the nonoptical isolated sensor to follow the same shape as for CO2 and water vapor when normalized. The sampling rate of the Microx TX3 is 2Hz; however, the sensor was found to have a limited response and resolution, yielding a flux loss in the frequency range f > 0.3Hz. This can be corrected for by applying cospectral similarity simultaneously using measurements of latent heat as the reference signal. On average the magnitude of the cospectral correction added 20% to the uncorrected oxygen flux during neutral atmospheric stratification.
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| 20. |
- Andersson, Andreas, et al.
(author)
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Using eddy covariance to estimate air-sea gas transfer velocity for oxygen
- 2016
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In: Journal of Marine Systems. - : Elsevier. - 0924-7963 .- 1879-1573. ; 159, s. 67-75
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Journal article (peer-reviewed)abstract
- Air-sea gas transfer velocity for O2 is calculated using directly measured fluxes with the eddy covariance technique. It is a direct method and is frequently used to determine fluxes of heat, humidity, and CO2, but has not previously been used to estimate transfer velocities for O2, using atmospheric eddy covariance data. The measured O2 fluxes are upward directed, in agreement with the measured air-sea gradient of the O-2 concentration, and opposite to the direction of the simultaneously measured CO2 fluxes. The transfer velocities estimated from measurements are compared with prominent wind speed parameterizations of the transfer velocity for CO2 and O2, previously established from various measurement techniques. Our result indicates stronger wind speed dependence for the transfer velocity of O2 compared to CO2 starting at intermediate wind speeds. This stronger wind speed dependence appears to coincide with the onset of whitecap formation in the flux footprint and the strong curvature of a cubic wind -dependent function for the transfer velocity provides the best fit to the data. Additional data using the measured O2 flux and an indirect method (based on the Photosynthetic Quotient) to estimate oxygen concentration in water, support the stronger wind dependence for the transfer velocity of O2 O-2 to CO2.
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