| 1. |
- Almqvist, Jonas, 1968-, et al.
(författare)
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Pragmatiska studier av meningsskapande
- 2008
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Ingår i: Utbildning och Demokrati. - 1102-6472 .- 2001-7316. ; 17:3, s. 11-24
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Tidskriftsartikel (refereegranskat)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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| 2. |
- Elmgren Frykberg, Gunilla, 1957-, et al.
(författare)
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Temporal coordination of the sit-to-walk task in subjects with stroke and in controls
- 2009
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Ingår i: Archives of Physical Medicine and Rehabilitation. - : Elsevier BV. - 0003-9993 .- 1532-821X. ; 90:6, s. 1009-1017
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To explore events and describe phases for temporal coordination of the sit-to-walk (STW) task, within a semistandardized set up, in subjects with stroke and matched controls. In addition, to assess variability of STW phase duration and to compare the relative duration of STW phases between the 2 groups.Design: Cross-sectional.Setting: Research laboratory.Participants: A convenience sample of persons with hemiparesis (n=10; age 50–67y), more than 6 months after stroke and 10 controls matched for sex, age, height, and body mass index.Interventions: Not applicable.Main Outcome Measures: Relative duration of STW phases, SE of measurement in percentage of the mean, and intraclass correlation coefficients (ICCs).Results: Four STW phases were defined: rise preparation, transition, primary gait initiation, and secondary gait initiation. The subjects with stroke needed 54% more time to complete the STW task than the controls did. ICCs ranged from .38 to .66 and .22 to .57 in the stroke and control groups, respectively. SEs of measurement in percentage of the mean values were high, particularly in the transition phase: 54.1% (stroke) and 50.4% (controls). The generalized linear model demonstrated that the relative duration of the transition phase was significantly longer in the stroke group.Conclusions: The present results extend existing knowledge by presenting 4 new phases of temporal coordination of STW, within a semistandardized set-up, in persons with stroke and in controls. The high degree of variability regarding relative STW phase duration was probably a result of both the semistandardized set up and biological variability. The significant difference in the transition phase across the 2 groups requires further study.
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| 4. |
- Halvorsen, Kjartan, et al.
(författare)
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Tracking the Motion of Hidden Segments Using Kinematic Constraints and Kalman Filtering
- 2008
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Ingår i: Journal of Biomechanical Engineering. - : ASME International. - 0148-0731 .- 1528-8951. ; 130:1, s. 011012:1-9
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Tidskriftsartikel (refereegranskat)abstract
- Motion capture for biomechanical applications involves in almost all cases sensors or markers that are applied to the skin of the body segments of interest. This paper deals with the problem of estimating the movement of connected skeletal segments from 3D position data of markers attached to the skin. The use of kinematic constraints has been shown previously to reduce the error in estimated segment movement that are due to skin and muscles moving with respect to the underlying segment. A kinematic constraint reduces the number of degrees of freedom between two articulating segments. Moreover, kinematic constraints can help reveal the movement of some segments when the 3D marker data otherwise are insufficient. Important cases include the human ankle complex and the phalangeal segments of the horse, where the movement of small segments is almost completely hidden from external observation by joint capsules and ligaments. This paper discusses the use of an extended Kalman filter for tracking a system of connected segments. The system is modeled using rigid segments connected by simplified joint models. The position and orientation of the mechanism are specified by a set of generalized coordinates corresponding to the mechanism’s degrees of motion. The generalized coordinates together with their first time derivatives can be used as the state vector of a state space model governing the kinematics of the mechanism. The data collected are marker trajectories from skin-mounted markers, and the state vector is related to the position of the markers through a nonlinear function. The Jacobian of this function is derived. The practical use of the method is demonstrated on a model of the distal part of the limb of the horse. Monte Carlo simulations of marker data for a two-segment system connected by a joint with three degrees of freedom indicate that the proposed method gives significant improvement over a method, which does not make use of the joint constraint, but the method requires that the model is a good approximation of the true mechanism. Applying the method to data on the movement of the four distal-most segments of the horse’s limb shows good between trial consistency and small differences between measured marker positions and marker positions predicted by the model.
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| 6. |
- Kullberg, Kerstin, et al.
(författare)
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Daily eating events among co-living and single-living diseased older men
- 2008
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Ingår i: The Journal of Nutrition, Health & Aging. - 1279-7707 .- 1760-4788. ; 12:3, s. 176-182
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To analyse, describe and compare the frequency and energy intake of eating events, including specific food items, among diseased older men living in ordinary housing. Design: Descriptive and explorative. Setting: Interviews were performed in the participants’ home. Participants: Thirty-five co-living and 26 single-living men, 64-88 years of age. Participants had one of three chronic diseases associated with difficulties in buying and preparing food and with difficulties related to the meal situation: Parkinson’s disease, rheumatoid arthritis or stroke. Measurements: A repeated 24-h recall was used to assess food intake and meal patterns. Results: Eating events were distributed over a 24-h period. Co-living men had a higher (p=0.001) number of eating events/day; both hot and cold eating events were consumed more frequently. There was no difference between groups concerning energy intake. Co-living men had more often hot eating events cooked from raw ingredients (p=0.001) and more various vegetables/roots (p=0.003) included in such eating events. Conclusion: Single-living men may constitute a vulnerable group from a nutritional perspective, while co-living men, besides the pleasure of eating together, seem to get support with food and eating events from their partners. Hence, the group of single-living men, particularly those with a disability, should receive particular attention with regard to possible food-related difficulties.
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| 7. |
- Sandmark, Hélène, 1951-, et al.
(författare)
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Understanding work ability : Experiences of female assistant nurses in elderly care
- 2009
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Ingår i: Work. - Amsterdam : IOS Press. - 1051-9815 .- 1875-9270. ; 34:3, s. 373-383
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Tidskriftsartikel (refereegranskat)abstract
- Few studies to date have investigated retained work ability. The aim of this explorative study was to describe female assistant nurses’ experiences of high work attendance over the years. The setting is a municipality in mid-Sweden that employs 466 female assistant nurses permanently within municipal elderly care. A qualitative methodology was chosen and thematic, open-ended, interviews were carried out with 12 female assistant nurses. The interviewees were selected from the 117 women who had taken the least amount of sick leave over the past five years, which meant no sick leave at all or no more than 5 days. The interviews were transcribed verbatim, and thereafter a content analysis was carried out. Three main themes connected with the aim of the study emerged from the interviews: “a desirable job, despite low status”, “supportive social networks”, and “coping ability”. In order to strengthen work ability among female employees in elderly care, the findings indicate that it is crucial to support mobility in working life, and to promote social support and networks at the workplace and in private life, as well as a coping-oriented approach to health issues and social life.
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| 8. |
- Tchougounova, Elena, et al.
(författare)
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Sox5 can suppress platelet-derived growth factor B-induced glioma development in Ink4a-deficient mice through induction of acute cellular senescence
- 2009
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Ingår i: Oncogene. - : Springer Science and Business Media LLC. - 0950-9232 .- 1476-5594. ; 28:12, s. 1537-1548
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Tidskriftsartikel (refereegranskat)abstract
- SOX5 is a member of the high-mobility group superfamily of architectural non-histone proteins involved in gene regulation and maintenance of chromatin structure in a wide variety of developmental processes. Sox5 was identified as a brain tumor locus in a retroviral insertional mutagenesis screen of platelet-derived growth factor B (PDGFB)-induced mouse gliomas. Here we have investigated the role of Sox5 in PDGFB-induced gliomagenesis in mice. We show that Sox5 can suppress PDGFB-induced glioma development predominantly upon Ink4a-loss. In human glioma cell lines and tissues, we found very low levels of SOX5 compared with normal brain. Overexpression of Sox5 in human glioma cells led to a reduction in clone formation and inhibition of proliferation. Combined expression of Sox5 and PDGFB in primary brain cell cultures caused decreased proliferation and an increased number of senescent cells in the Ink4a-/- cells only. Protein analyses showed a reduction in the amount and activation of Akt and increased levels of p27(Kip1) upon Sox5 expression that was dominant to PDGFB signaling and specific to Ink4a-/- cells. Upon inhibition of p27(Kip1), the effects of Sox5 on proliferation and senescence could be reversed. Our data suggest a novel pathway, where Sox5 may suppress the oncogenic effects of PDGFB signaling during glioma development by regulating p27(Kip1) in a p19(Arf)-dependent manner, leading to acute cellular senescence.
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| 9. |
- Åberg, Anna Cristina
(författare)
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Care recipients' perceptions of activity-related life space and life satisfaction during and after geriatric rehabilitation
- 2008
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Ingår i: Quality of Life Research. - : Springer Science and Business Media LLC. - 0962-9343 .- 1573-2649. ; 17:4, s. 509-520
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Tidskriftsartikel (refereegranskat)abstract
- The debate concerning older people's life spaces should be based on subjective priorities of the elderly themselves. The purpose of this study was therefore to improve the understanding of preferences of elderly care recipients regarding activity-related life space (ARLS) and life satisfaction. A mainly qualitative design was used. Fifteen persons aged 80-94 years, undergoing geriatric rehabilitation, were interviewed during hospital stay and on two follow-up occasions after discharge. Transcribed interviews were analyzed in line with the thematic framework approach. The results point to three approaches related to preferences of ARLS: hierarchical limitations, changing continuity, and boundary breaking. Adaptive approaches were employed when physical incapacity was considered a hindrance to activity, adaptations which as a rule resulted in limitations of ARLS preferences. Activity related to the area 'close to one's own body' emerged as one of three identified key activities with importance for life satisfaction, the others being socializing and going out of doors. Continuity of activity in a familiar life space was expressed as a common ideal. If the aim of geriatric rehabilitation is to improve care recipients' life satisfaction, attention needs to be paid to the subjective dimensions of the ARLS in the goal setting.
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