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| 2. |
- Alerby, Eva, et al.
(författare)
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‘I miss the physical presence of the students’: Swedish teachers’ experiences of online teaching and learning during the COVID-19 pandemic
- 2021
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Ingår i: Education in the North. - Aberdeen : University of Aberdeen. - 0424-5512 .- 2398-0184. ; 28:3, s. 100-120
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Tidskriftsartikel (refereegranskat)abstract
- The demographic and economic conditions for education in the Nordic countries—especially in remote areas of this region—has led to an increasingly intensive use of information and communication technologies. The authorities’ response to the COVID-19 pandemic has, however, entailed a radical acceleration of the already ongoing change towards digitisation. In the wake of the current pandemic regulations, the purpose of this study was to illuminate and discuss Swedish secondary school teachers’ experiences of online teaching and learning—with a particular focus on the teaching dimension—based on synchronous teaching and learning modes. A specific research question was posed: What opportunities and challenges do online teaching and learning offer when it comes to forming a sense of belonging, authenticity, and presence? Theoretically, this study was based on a phenomenological lifeworld approach. The empirical data, collected from March 2020 to March 2021, consisted of written reflections from ninety-three teachers in a remote school district. Three themes showed how online teaching and learning redefines the bodily, temporal, and spatial conditions for teachers’ experiences of belonging, authenticity, and presence in education. The study also indicates how digitisation might serve as a disruption that not only reminds us of the pedagogical assignment at hand but also lets another possible pedagogical world announce itself.
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| 3. |
- Bentham, James, et al.
(författare)
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A century of trends in adult human height
- 2016
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Ingår i: eLIFE. - : eLife Sciences Publications Ltd. - 2050-084X. ; 5
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Tidskriftsartikel (refereegranskat)abstract
- Being taller is associated with enhanced longevity, and higher education and earnings. We reanalysed 1472 population-based studies, with measurement of height on more than 18.6 million participants to estimate mean height for people born between 1896 and 1996 in 200 countries. The largest gain in adult height over the past century has occurred in South Korean women and Iranian men, who became 20.2 cm (95% credible interval 17.5–22.7) and 16.5 cm (13.3– 19.7) taller, respectively. In contrast, there was little change in adult height in some sub-Saharan African countries and in South Asia over the century of analysis. The tallest people over these 100 years are men born in the Netherlands in the last quarter of 20th century, whose average heights surpassed 182.5 cm, and the shortest were women born in Guatemala in 1896 (140.3 cm; 135.8– 144.8). The height differential between the tallest and shortest populations was 19-20 cm a century ago, and has remained the same for women and increased for men a century later despite substantial changes in the ranking of countries.
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| 4. |
- Capezza, Antonio Jose, et al.
(författare)
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Acylation of agricultural protein biomass yields biodegradable superabsorbent plastics
- 2021
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Ingår i: Communications Chemistry. - : Springer Nature. - 2399-3669. ; 4:1
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Tidskriftsartikel (refereegranskat)abstract
- Superabsorbent polymers (SAP) are a central component of hygiene and medical products requiring high liquid swelling, but these SAP are commonly derived from petroleum resources. Here, we show that sustainable and biodegradable SAP can be produced by acylation of the agricultural potato protein side-stream (PPC) with a non-toxic dianhydride (EDTAD). Treatment of the PPC yields a material with a water swelling capacity of ca. 2400%, which is ten times greater than the untreated PPC. Acylation was also performed on waste potato fruit juice (PFJ), i.e. before the industrial treatment to precipitate the PPC. The use of PFJ for the acylation implies a saving of 320 000 tons as CO2 in greenhouse gas emissions per year by avoiding the industrial drying of the PFJ to obtain the PPC. The acylated PPC shows biodegradation and resistance to mould growth. The possibilities to produce a biodegradable SAP from the PPC allows for future fabrication of environment-friendly and disposable daily-care products, e.g. diapers and sanitary pads.
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| 5. |
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| 6. |
- Cooke, Audrey, et al.
(författare)
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Identifying the nonverbal mathematical exploration in preverbal children playing with a commercial toy
- 2022
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Ingår i: Bringing Nordic mathematics education into the future. - : Svensk förening för MatematikDidaktisk Forskning - SMDF. ; , s. 33-40
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Konferensbidrag (refereegranskat)abstract
- Young children often engage with commercial toys, many of which are now connected to a television or online video program that the children (and their caregivers) can watch. Children who are preverbal are often engaged (and targeted) with these toys, benefitting with a range of learnings and demonstrations of understandings. This paper uses 360-degree videos to explore the learnings and understandings demonstrated when a preverbal child engages with a commercial toy with an educator. The 360-degree video shows the preverbal child’s behaviours, both in response to the educator’s speech and actions and self-initiated. Children were observed engaged in events, made up of behaviours that were delineated into actions to help the researchers identify what mathematical exploration and understandings each child may demonstrate. Of particular interest is the mathematical understandings and exploration that the child may demonstrated via their actions.
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| 7. |
- Das, Oisik, et al.
(författare)
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Naturally-occurring bromophenol to develop fire retardant gluten biopolymers
- 2020
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Ingår i: Journal of Cleaner Production. - : Elsevier. - 0959-6526 .- 1879-1786. ; 243
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to impart fire retardancy in wheat gluten polymer through naturally-occurring additives such as lanosol. The fire properties of lanosol were compared with two other conventional brominated fire retardants (Tetrabromobisphenol A and Hexabromocyclododecane). Samples containing fire retardants and gluten were prepared through compression moulding process and then characterised for their fire and mechanical properties. All fire retardants enhanced the reaction-to-fire and thermal properties of gluten while generating V-0 (i.e. vertical position and self-extinguished) ratings in the UL-94 test. The presence of all the fire retardants increased the modulus of the gluten polymer but the fire retardant particles were detrimental for the tensile strength. Nevertheless, lanosol addition delayed ignition and lowered peak heat release rate of gluten by the maximum amount, thereby leading to relatively higher fire performance index (compared to the other fire retardants). Lanosol also allowed the gluten to create a dense char barrier layer during burning that impeded the transfer of heat and flammable volatiles. The fact that only 4 wt% lanosol was able to cause self-extinguishment under direct flame and reduce peak heat release rate by a significant 50% coupled with its inherent occurrence in nature, raises the question if lanosol can be a potential fire retardant in polymeric systems, although it is a bromophenol.
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| 9. |
- Ekblom Bak, Elin, 1981-, et al.
(författare)
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Accelerometer derived physical activity patterns in 27.890 middle‐aged adults : The SCAPIS cohort study
- 2022
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - : John Wiley & Sons. - 0905-7188 .- 1600-0838. ; 32:5, s. 866-880
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Tidskriftsartikel (refereegranskat)abstract
- The present study aims to describe accelerometer-assessed physical activity (PA) patterns and fulfillment of PA recommendations in a large sample of middle-aged men and women, and to study differences between subgroups of socio-demographic, socio-economic, and lifestyle-related variables. A total of 27 890 (92.5% of total participants, 52% women, aged 50–64 years) middle-aged men and women with at least four days of valid hip-worn accelerometer data (Actigraph GT3X+, wGT3X+ and wGT3X-BT) from the Swedish CArdioPulmonary bioImage Study, SCAPIS, were included. In total, 54.5% of daily wear time was spent sedentary, 39.1% in low, 5.4% in moderate, and only 0.1% in vigorous PA. Male sex, higher education, low financial strain, born in Sweden, and sedentary/light working situation were related to higher sedentary time, but also higher levels of vigorous PA. High BMI and having multiple chronic diseases associated strongly with higher sedentary time and less time in all three PA intensities. All-year physically active commuters had an overall more active PA pattern. The proportion fulfilling current PA recommendations varied substantially (1.4% to 92.2%) depending on data handling procedures and definition used. Twenty-eight percent was defined as having an “at-risk” behavior, which included both high sedentary time and low vigorous PA. In this large population-based sample, a majority of time was spent sedentary and only a fraction in vigorous PA, with clinically important variations between subgroups. This study provides important reference material and emphasizes the importance of a comprehensive assessment of all aspects of the individual PA pattern in future research and clinical practice.
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| 10. |
- Helenius, Ola, et al.
(författare)
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Analysing Instrumental and Pedagogic Situations in Preschools using the Didaktic Space
- 2014
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Ingår i: Development of mathematics teaching: Design, Scale, Effects. - : Svensk förening för matematikdidaktisk forskning (SMDF). - 9789197393492
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Konferensbidrag (refereegranskat)abstract
- Researchers rarely discuss methodological issues in regard to preschoolmathematics education and if they do, they do not take their starting point fromreconceptualisations of what mathematics might be for preschool children. Thispaper presents as an analytical tool the “didaktic space” that arose whenresponding to issues related to the analysis of data collected in a Swedishpreschool. The issues that arose from categorising situations using Bishop’s sixactivities required some reconsiderations of the methodology in relationship tothe research questions. The paper discusses how methodological decisions canaffect the analysis and the future possibilities that the didaktic space offers.
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