排序方式： 共有11条查询结果，搜索用时 15 毫秒
1.
Karolina ?sterlind 《International Journal of Science Education》2013,35(8):891-908
A case study is presented describing the work of three pupils in the upper level of compulsory school. The pupils were learning about the intensified greenhouse effect and the depletion of the ozone layer. In their work, the need for certain domain‐specific knowledge becomes apparent; for example, understanding such concepts as photosynthesis, radiation and catalyst. The results show that the pupils experienced difficulty in distinguishing between the different meanings attached to individual concepts in their theoretical and practical contexts. They are often unable to identify the meaning relevant to the specific environmental problem that they are working on. The pupils’ difficulties are seen here as a problem of differentiation between concepts denoted by the same term as well as between different aspects of the same concept, a view that is then related to the question of appropriate conditions for conceptual change. 相似文献
2.
Karolina Broman Sascha Bernholt Ilka Parchmann 《International Journal of Science Education》2018,40(10):1176-1197
ABSTRACTContext-based learning aims to make learning more meaningful by raising meaningful problems. However, these types of problems often require reflection and thinking processes that are more complex and thus more difficult for students, putting high demands on students’ problem-solving capabilities. In this paper, students’ approaches when solving context-based chemistry problems and effects of systematic scaffolds are analysed based on the Model of Hierarchical Complexity. Most answers were initially assigned to the lowest level of the model; higher levels were reached without scaffolds only by few students and by most students with scaffolds. The results are discussed with regard to practical implications in terms of how teachers could make use of context-based tasks and aligned scaffolds to help students in this activity. 相似文献
3.
Karolina Gombert Flora Douglas Karen McArdle Sandra Carlisle 《Educational Action Research》2016,24(4):583-597
This article reflects on ethical limitations and dilemmas encountered during fieldwork of the Foodways and Futures project (2013–2016). Foodways and Futures is a qualitative action research project aimed at exploring the food choices of former homeless young people (aged 16–25) in Aberdeenshire. In Scotland, where over 13,000 young people become homeless every year, Foodways and Futures aims to address social injustices as well as the implications of malnutrition in young people. Four interrelated main themes surrounding ethics became apparent during fieldwork: issues of communication, trust, issues with consent forms and power relations. Reflecting on these themes makes it clear that ethical guidelines are not necessarily beneficial for researchers as well as participants, especially if they are part of so-called vulnerable groups. 相似文献
4.
Menstrual disorders are common among female athletes and ballet dancers. Endocrine changes, such as high testosterone (HT) levels and high luteinizing hormone (LH)/follicle-stimulating hormone (FSH) ratios, may suggest functional ovarian hyperandrogenism which may induce such dysfunction. The aim of this study was therefore to evaluate endocrine status in female athletes and ballet dancers with menstrual disorders. Their nutritional status and dietary habits were analysed in relation to the testosterone levels. In a cross-sectional approach, 31 female athletes (18.1 ± 2.6 years) and 21 ballerinas (17.1 ± 0.9) with menstrual disorders participated in the study. The levels of serum LH, FSH, progesterone (P), estradiol (E2), prolactin (PRL), thyroid-stimulating hormone, testosterone (T) and sex hormone-binding globulinwere measured to assess hormonal status. In addition, the free androgen index (FAI) was calculated. Nutritional status, total daily energy expenditure and nutritional habits were evaluated. Girls were assigned to one of the following groups: low testosterone (LT) level, normal testosterone level or HT level. There were significant differences between ballerinas and other female athletes in terms of testosterone levels, FAI, age at the beginning of training, length of training period and age at menarche. The PRL level was lowest in the LT group while the FAI index was highest in the HT group. Daily energy and carbohydrate intakes were significantly lower in the HT group. T levels in the study subjects were found to be associated with nutritional factors, energy availability, age at the beginning of training and frequency of training. This is the first report of HT levels being associated with the status of a female ballet dancer, the age of menarche and the length of the training history. Further research is necessary to confirm the results in a larger study group. 相似文献
5.
This paper argues that evolutionary thinking and modeling can contribute to the emerging research on sustainability transitions and their management. Evolutionary theory provides a range of concepts and mechanisms that are useful in making existing theorizing about transitions more precise and complete. In particular, we will discuss how the multi-level, multi-phase, co-evolutionary, and social learning dynamics underlying transitions can be addressed in evolutionary models. In addition, evolutionary theorizing offers suggestions for extending current theoretical frameworks of transitions. Group selection provides a good example. We review the small set of formal evolutionary models of sustainability transitions, and show that existing formal evolutionary models of technological, social and institutional change can provide useful inputs to transition research and management. 相似文献
6.
Karolina Winklerova Sarka Krepelkova Roman Kroufek 《The Journal of environmental education》2018,49(5):400-410
The study analyzes the meaning attributed to the GLOBE program by its former participants. The data were collected by conducting interviews with 19 adult respondents who left the program at least five years ago. The respondents interpreted the program as a strong community shaped by routine as well as extraordinary program activities and by their relationships. The respondents linked their GLOBE experience with the feeling of being part of something meaningful. The program provided them with a special privilege to experience something different from their non-participating peers. Their participation in the program influenced the respondents' future life and in some cases their professional career. The study discusses the implications in respect to environmental education practice. 相似文献
7.
8.
9.
Jasna Leni
ek Krlea Merica Aralica Du&#x;ka Tje&#x;i&#x;-Drinkovi&#x; Karolina Crnekovi&#x; Jelena Culej Gordana Fressl Juro&#x; Verica Horvat Dara Metzner Dijana Pamukovi&#x; Jaram Alma Pipi&#x; Kitter Fran Smai&#x; Sanela &#x;imi&#x; Vojak Livija &#x;imi
evi&#x; Valentina Veri&#x; 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2022,32(1)
The sweat test (ST) is a cornerstone in the diagnosis of cystic fibrosis (CF), together with newborn screening and genetic testing. However, the performance of the ST can depend on the operator’s skill, so several international guidelines have been published to standardise the ST, but inconsistencies remain. The joint Working Group for ST Standardisation (WG STS) of the Croatian Society of Medical Biochemistry and Laboratory Medicine, in association with cistic fybrosis health professional and the Cistic Fibrosis Centre for Paediatrics and Adults, have issued National Guidelines for the Performance of the Sweat Test in order to ensure consistency in ST performance and accuracy of reported results. Many of the standards were taken from the 2nd Edition of the UK Guidelines for Performance of the ST for the Diagnosis of CF, while others were taken from independent consensus statements from the WG STS based on local ST equipment and practices. The standards cover every step of the ST, from the indications for testing to reporting of results and their interpretation, including the analytical phase and quality control. In addition, National Guidelines include appendices with practical examples in order to aid implementation of the recommendations in routine practice. 相似文献
10.
Auditing, accountability, and transparency are concepts that greatly impact the working conditions of today’s public sector professionals, including teachers. Documentation requirements have been on the increase for some time, which can be seen in the education sector’s Individual Development Plans (IDPs), for example. These IDPs are pedagogical tools, but can also be seen as governance tools, which is how we will treat them here. In this conceptual paper, we argue that to improve knowledge of education policy changes, there is a need to consider the changed documentation requirements from the perspective of sociology of professions. To this end, we use Evetts’ occupational and organisational logics and Abbott’s three aspects of professional work. 相似文献