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- Ahlstrand, Elisabeth, 1947-, et al.
(författare)
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Teacher Knowledge Development in a Social and Individual Context
- 1996
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Ingår i: Changing Research and Practice. Teachers' Professionalism, Identities and Knowledge. - London, Washington : Falmer Press. - 075070585X - 0750705868
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 3. |
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| 4. |
- Biel, Anders, 1977-, et al.
(författare)
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Experimental evaluation of normal and shear delamination in cellulose-based materials using a cohesive zone model
- 2022
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Ingår i: International Journal of Solids and Structures. - : Elsevier. - 0020-7683 .- 1879-2146. ; 252
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Tidskriftsartikel (refereegranskat)abstract
- An experimental study to characterize properties controlling delamination of paperboard is presented. The normal and shear traction-separation laws are measured and evaluated using a double cantilever beam (DCB) and a split double cantilever beam (SCB) specimen. The DCB-experiments provides normal separation data in good agreement with results using alternative experimental techniques. From the measured data, both normal and shear fracture resistance data are obtained. A length parameter is introduced. The length parameter allows for the cohesive law to be obtained from a dimensionless master curve which is valid both for normal and shear loading. Taking advantage of the master curve, a mixed-mode potential is proposed. The mixed-mode potential is implemented as a user interface to a finite element code. As a final test, the experimental setups of the DCB and SCB specimens are simulated to validate the identified normal and shear properties.
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| 5. |
- Bruze, Gustaf, et al.
(författare)
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Mental health from 5 years before to 10 years after bariatric surgery in adolescents with severe obesity: a Swedish nationwide cohort study with matched population controls
- 2024
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Ingår i: LANCET CHILD & ADOLESCENT HEALTH. - : ELSEVIER SCI LTD. - 2352-4642 .- 2352-4650. ; 8:2, s. 135-146
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Tidskriftsartikel (refereegranskat)abstract
- Background: The long-term effects of bariatric surgery on the mental health of adolescents with severe obesity remain uncertain. We aimed to describe the prevalence of psychiatric health-care visits and filled prescription psychiatric drugs among adolescents with severe obesity undergoing bariatric surgery in the 5 years preceding surgery and throughout the first 10 years after surgery, and to draw comparisons with matched adolescents in the general population. Methods: Adolescents with severe obesity and who underwent bariatric surgery were identified through the Scandinavian Obesity Surgery Registry. We included adolescents who had bariatric surgery between 2007 and 2017 and were younger than 21 years at time of surgery. Each adolescent patient was matched with ten adolescents from the general population by age, sex, and county of residence. Specialist psychiatric care and filled psychiatric prescriptions were retrieved from nationwide data registers. Findings: 1554 adolescents (<21 years) with severe obesity underwent bariatric surgery between 2007 and 2017, 1169 (75%) of whom were female. At time of surgery, the mean age was 19.0 years [SD 1.0], and the mean BMI was 43.7 kg/m(2) (SD 5.5). 15 540 adolescents from the general population were matched with adolescents in the surgery group. 5 years before the matched index date, 95 (6.2%) of 1535 surgery patients and 370 (2.5%) of 14 643 matched adolescents had a psychiatric health-care visit (prevalence difference 3.7%; 95% CI 2.4-4.9), whereas 127 (9.8%) of 1295 surgery patients and 445 (3.6%) of 12 211 matched adolescents filled a psychiatric drug prescription (prevalence difference 6.2%; 95% CI 4.5-7.8). The year before the matched index date, 208 (13.4%) of 1551 surgery patients and 844 (5.5%) of 15 308 matched adolescents had a psychiatric health-care visit (prevalence difference 7.9%; 95% CI 6.2-9.6), whereas 319 (20.6%) of 1551 surgery patients and 1306 (8.5%) of 15 308 matched adolescents filled a psychiatric drug prescription (prevalence difference 12.0%; 10.0-14.1). The prevalence difference in psychiatric health-care visits peaked 9 years after the matched index date (12.0%; 95% CI 9.0-14.9), when 119 (17.6%) of 675 surgery patients and 377 (5.7%) of 6669 matched adolescents had a psychiatric health-care visit. The prevalence difference in filled psychiatric drug prescription was highest 10 years after the matched index date (20.4%; 15.9-24.9), when 171 (36.5%) of 469 surgery patients and 739 (16.0%) of 4607 matched adolescents filled a psychiatric drug prescription. The year before the matched index date, 19 (1.2%) of 1551 surgery patients and 155 (1.0%) of 15304 matched adolescents had a health-care visit associated with a substance use disorder diagnosis (mean difference 0.2%, 95% CI -0.4 to 0.8). 10 years after the matched index date, the prevalence difference had increased to 4.3% (95% CI 2.3-6.4), when 24 (5.1%) of 467 surgery patients and 37 (0.8%) of 4582 matched adolescents had a health-care visit associated with a substance use disorder diagnosis. Interpretation: Psychiatric diagnoses and psychiatric drug prescriptions were more common among adolescents with severe obesity who would later undergo bariatric surgery than among matched adolescents from the general population. Both groups showed an increase in prevalence in psychiatric diagnoses and psychiatric drug prescriptions leading up to the time of surgery, but the rate of increase in the prevalence was higher among adolescents with severe obesity than among matched adolescents. With the exception of health-care visits for substance use disorders, these prevalence trajectories continued in the 10 years of follow-up. Realistic expectations regarding mental health outcomes should be set preoperatively. Funding: Swedish Research Council, Swedish Research Council for Health, Working Life and Welfare.
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| 6. |
- Cosquer, Guirec Y., Wang J., Naeslund C., Adams D.M., Ji W., Zhuo J-C., Anisuzzaman A.K.M.,Sjöberg S., Barth R.F., Eriksson S., Tjarks W.
(författare)
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Synthesis and biological evaluation of carboranyl thymidines for BNTC
- 2001
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Ingår i: 221st MEDI-151. - : Abstr Pap Am Chem Soc. ; , s. 151-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
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| 7. |
- Cronhjort, Mikael, 1965-, et al.
(författare)
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Civilingenjör och lärare – ett bidrag till hållbar ingenjörsutbildning
- 2017
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Konferensbidrag (refereegranskat)abstract
- Vi har studerat hur kombinationsutbildningen Civilingenjör och lärare på KTH bidrar till att avhjälpa lärarbristen och därigenom bidrar till en hållbar ingenjörsutbildning. Studien bygger på data från enkäter och intervjuer med programmets alumner. Enkätmaterialet visar att cirka 30% av alumnerna arbetar i gymnasieskolan, 60% i näringslivet och 10% med övrigt, exempelvis i organisationer eller på universitet. Alumnerna anser sig vara gynnade på arbetsmarknaden. De har ett starkt självförtroende och en mycket positiv bild av den egna kompetensen.
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| 8. |
- Cronhjort, Mikael, et al.
(författare)
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Competences developed in a double degree programme : Master of science in engineering and in education
- 2017
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Ingår i: INTED2017. - : IATED-INT ASSOC TECHNOLOGY EDUCATION A& DEVELOPMENT. - 9788461784912 ; , s. 1762-1767
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Konferensbidrag (refereegranskat)abstract
- Since 2002 there has been a double degree programme in Stockholm, Sweden thanks to a joint venture between KTH Royal Institute of Technology and Stockholm University. After five years of studying, which is the stipulated time for the teacher programme and engineering programmes in general, the graduates become engineers and teachers. By choosing this programme the graduates have the option of two professions during their careers. At present Sweden is in desperate need of more teachers in maths, science, and technology. These career options also offer flexibility when the number of teenagers decreases, or companies have to downsize. Sceptics might fear that this programme could lead to less competence, due to less time spent on specialising within the subjects of engineering, but according to Trevelyan most engineers spend more time on human interaction than on design and calculus [1]. Thus, studies in education can provide engineers with additional useful competence. Previous studies on double degree programmes have mainly focused on organizational problems, except for Wimshurst & Manning who mapped students' ongoing experiences when they combined a degree in criminology with degrees in other disciplines. These students complained about disjoint courses instead of joint discourses [2]. The aim of our study is to map and analyse: 1 how alumni evaluate this programme in retrospect, and 2 how they describe their present competences. Accordingly, 49 alumni answered a questionnaire in June 2016; and 15 of these respondents were selected for a tape recorded interview face to face. These alumni graduated from the programme 2-9 years ago. The data were coded according to principles of Grounded Theory [3]. In retrospect these alumni do appreciate the programme. Most respondents comment on the merits of maths learnt at KTH, though only a minority of engineers use higher maths as a practical tool. On the other hand, maths serves as a prototype for problem solving in general. Studies and training in leadership, learning theories and communication offer important tools for most engineers. Alumni employed as teachers claim that they are more well-prepared to teach maths, science, and technology than other teachers, partly because they can illustrate phenomena by giving examples from other realities than the school context. Alumni's descriptions of their present competence illuminate various combinations of engineering and educational skills. When data were coded three main categories emerged: material, processual and functional. Finally, the core category was formulated as follows: The programme matches new needs in present working life, i.e. that expertise knowledge is communicated to various kinds of recipients. The programme does not primarily reproduce labour, but rather support alumni in creating niches for themselves by pushing, widening and going beyond previous professional roles in working life. Conclusion: The double degree programme provides labour market with competent teachers and with communicative engineers. This is important in our era, when working life is partly transforming from standardized production into flexible knowledge processing.
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| 9. |
- Cronhjort, Mikael, et al.
(författare)
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DOUBLE DEGREES : HITS AND PITS FOR THE CAREERS
- 2017
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Ingår i: INTED2017. - : IATED-INT ASSOC TECHNOLOGY EDUCATION A& DEVELOPMENT. - 9788461784912 ; , s. 4302-4309
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Konferensbidrag (refereegranskat)abstract
- Most of the programmes at KTH Royal Institute of Technology are engineering programmes with traditional contents, but some are norm-breaking innovations, created to respond to changes or demands perceived in society or in working life. One example is the double degree programme Master of Science in Engineering and in Education, given in cooperation with Stockholm University. In this programme students get two degrees, one in engineering and one in education as teachers for the upper secondary school. This is a rather unusual concept in Sweden and Europe, but similar programmes exist in Gothenburg, Sweden, and in Tampere, Finland. Graduates from Master of Science in Engineering and in Education have several career options. Their engineering degrees are characterised by much Mathematics and Pedagogics, but also contain a specialisation in Physics, Chemistry or Technology/Computer Science. Besides working as engineers, graduates can work as teachers in the upper secondary school. It is a challenge for students in these double degree programmes to develop two professional identities [1]. Similar identity problems also exist for scientists who later add a second career as teacher, but they focus on one career at a time, which could make it easier [2]. In this study we focus on how alumni from Master of Science in Engineering and in Education describe their working tasks and careers, and how they perceive their success on the job market. Data were gathered by means of questionnaires and interviews. The development of the careers was addressed in a web questionnaire, sent out in the spring 2016 to alumni who graduated 2-9 years ago (49 respondents). To get more details, we invited 17 of the respondents to follow up interviews. The programme exit survey, given to all graduates within 12 months from their graduation, provides a picture of the introduction to working life (106 respondents). Preliminary results indicate that a little more than half of the graduates work in business, about 30% work as teachers, and about 10% are employed at universities. 2-9 years later, only a slightly higher percentage seems to have been working as teachers. About 10% of the alumni seem to have been working as engineers as well as teachers, and about 20% with education in another context than school. More than 50% of the respondents think that they have been favoured on the job market by having studied this particular double degree programme. About 40% express that they have been neither or both disadvantaged and favoured, and about 10% think that they have been disadvantaged. Some express that they were more favoured on the job market for teachers than on the job market for engineers. The interviews provide details about the introduction to working life. Those who work as teachers seem to have a busy first year. They perceive that their subject knowledge is appreciated and many have additional responsibilities as e.g. scheduler, head of department, or for the learning management system. When applying for jobs in engineering, many find it challenging to explain their qualifications to an employer. Especially outside of Stockholm, few employers seem to have knowledge of the programme and of double degrees in engineering and in education. Many respondents seem to find the first year as an engineer to be a soft start, but some data indicate that they may advance rapidly towards more difficult challenges and responsibilities.
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