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Dorota M. Jankowska Aleksandra Gajda Maciej Karwowski 《International Journal of Science Education》2019,41(8):1096-1117
This article explores how creative visual imagination and creative thinking can help children to construct mental models of space. A mixed-method study, integrating quantitative and qualitative approaches and involving 98 five-year-old children (54 girls and 44 boys) demonstrated that creative visual imagination, rather than creative thinking, is linked with the knowledge and understanding of space. These results support the notion that creative visual imagination contributes to improvements in children's understanding of basic astronomical concepts. Interestingly, creative thinking was not associated with understanding and knowledge of cosmic phenomena in models taking into account creative imagination. The qualitative analysis showed differences in children's representations of space. We discuss the consequences of these findings for science education, particularly the teaching of elementary astronomy. 相似文献
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Aleksandra Kornhauser 《International Journal of Science Education》2013,35(1):21-50
Summaries English In this article, a major review of recent researches and developmental studies in chemical education is presented. The review summarizes and evaluates some 250 different articles and papers published mainly during the period 1975‐77, under the following headings: general research in chemical education, content‐oriented research, research into methods of chemical education, teaching aids and the use of educational technology, research in assessment and evaluation. Trends existing in the various research areas are identified, and future research needs and priorities suggested. 相似文献
3.
Aleksandra Pikić 《Public Library Quarterly》2020,39(2):115-139
ABSTRACTThe achievement of social justice, which implies the development of collections and the design of services for different user groups, is an objective present in the mission of public libraries. Since the 1950s, Croatian public libraries have been continuously developing collections and services for different user communities. However, one user community has remained largely unrecognized – LGBTIQ people. Therefore, the aim of the research presented in this paper is to examine the importance of the role of public libraries in the life of the LGBTIQ community in the Republic of Croatia. With a sample of 259 respondents, information behaviors, attitudes and experiences of LGBTIQ people in relation to public libraries have been examined via an online survey. In particular, this study explored the extent to which members of public libraries differ from non-members. The obtained results should contribute to a better understanding of the information needs and behavior of members of sexual minorities and help bring this group of users closer to (Croatian) public libraries by ensuring that libraries more adequately respond to their needs. 相似文献
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Dorota Kostrzewa-Nowak Robert Nowak Zbigniew Jastrz?bski Aleksandra Zar?bska Marta Bichowska Izabela Drobnik-Kozakiewicz ?ukasz Radzimiński Agata Leońska-Duniec Krzysztof Ficek Pawe? Ci?szczyk 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):103-113
Background
Numerous data suggest that aerobic-type exercise improves lipoprotein-lipid profiles, cardiorespiratory fitness and body composition in young women. The aim of this study was to evaluate the biological response to high-low impact aerobic fitness among young women.Materials and methods
Thirty-four young women aged 22 (19-24) years were divided into three groups: underweight (N = 10), normal weight (N = 12) and overweight (N = 12). Aerobic capacity, anthropometry and body composition together with complete blood count and lipid profile were determined before and after completion of a 12-week-long training period.Results
The training programme caused a significant decrease in weight (by 4.3 kg, P = 0.003), body mass index (by 1.3 kg/m2, P = 0.003), free fat mass (by 2.1 kg, P = 0.002), total body water (by 0.4 kg, P = 0.036), percentage of fat (by 3 percent points, P = 0.002), all analyzed skinfolds thicknesses, as well as the lipid profile in overweight group, and no changes in normal weight group. Significant changes in weight (by 4.2 kg, P = 0.005), body mass index (by 0.9 kg/m2, P = 0.005), crus skinfold thickness (by 3.3 mm, P = 0.028), and in maximum oxygen uptake (by 2.49 mL/kg/min; P = 0.047) were observed among underweight women. No change in total blood count was observed in all groups.Conclusion
Twelve-week-long fitness training programme of two alternating styles (low and high impact) has a beneficial effect on overweight young women.Key words: body composition, physical fitness, overweight, women 相似文献6.
Sharon Lamb Kaelin M. Farmer Elena Kosterina Susan Lambe Sariñana Aleksandra Plocha Renee Randazzo 《Gender and education》2016,28(4):527-545
Building on qualitative research about sexualisation by media and culture and the impact on girls' development, in this article we present a discourse analysis of three focus groups of teen girls of colour and of diverse ethnicities asked to talk about sexiness. We focus on the ways the girls both support and resist hegemonic discourses about femininity and sexuality as well as on the discursive strategies used by the girls to separate sexiness from lack of respectability and present themselves as both knowing consumers of media and passive responders. The girls constructed sexiness in three ways that we refer to as interpretive repertoires and analyse each for paradoxes, contradictions, and resistance to mainstream conceptualisations of sexiness. These are sexy as confident; disadvantages and advantages to sexy; and sexy as sold to you. 相似文献
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This research focuses on experienced Estonian teachers’ pre-service school practice. Each one of the 19 teachers interviewed in this study had over 25?years of professional experience. We were interested in their recollections of their pre-service school practice and the impact that their experience had on them professionally. The results indicate the importance of support systems and a cooperative atmosphere in the school, both of which enable a beginning teacher’s self-efficacy. Despite the lack of explicit support structures from the 1960s to the 1980s, implicit support existed and played an important role in facilitating the development of student teachers’ self-efficacy. 相似文献
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Aleksandra S. Panajotovi? Mihajlo ?. Stefanovi? Dragan Lj. Dra?a 《Journal of The Franklin Institute》2010,347(7):1242-1252
We study the performance of dual branch switch and stay combining (SSC) diversity receivers operating over correlated Rician fading channels, in the presence of correlated Rayleigh distributed cochannel interference (CCI). Fast convergent infinite series representations for both the joint probability density function (PDF) of the SSC input signal-to-interference ratios (SIRs) and the PDF of the SSC output SIR are derived. The last one is applied to semi-analytically study the average bit error probability (ABEP) of differential binary phase shift keying (DBPSK). Furthermore, the optimum switching threshold in the sense of minimum ABEP is obtained numerically and the effects of fading severity and branch correlation on both ABEP and optimum switching threshold are investigated. Numerical and simulation results are presented to support the mathematical analysis. 相似文献
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Aleksandra Tokarz 《High Ability Studies》1993,4(1):31-38
Subjects evaluated the frequency of their participation in activities typical of the scientist's work, the emotional value of these activities (pleasant‐unpleasant) and their stimulating value (motivating‐demotivating). The main stimulator of effective or potentially effective scientists was cognitive problem exploration, which clearly discriminated between professors and associate professors. Moreover, a high sensitivity for collative variables (especially novelty) characterized the potentially effective group. The motivation of the effective group was mainly intrinsic. The main inhibitors found in each group were depression, ineffectiveness of work, excessive organizational duties and time pressure. Effective scientists could work productively despite the negative influences of external circumstances. Both ineffective and potentially effective scientists were more dependent on aspects of the practical setting, especially other people's opinions. 相似文献
10.
Almost all teenage magazines invite readers to submit questions concerning relationships, published as letters to the editor, popularly called ‘advice columns’, often containing explicit questions about sexuality. This study aims to examine, firstly, how themes related to sexual initiation are presented in letters to the editor published in Polish magazines and, secondly, how these themes are reflective of Poland's socio-cultural climate. These aims are achieved through thematic data analysis and by presenting an in-depth history of teenage magazines in Poland. In order of prevalence, the presented themes include entering into a general dialogue focused on sexual activity, eliminating the long-term (e.g. unplanned pregnancy) and short-term (e.g. rejection by one's partner) consequences of sexual activity, establishing ideal circumstances for sexual initiation, and, as a transition stage, meeting needs relevant only to those who have already initiated sexual activity. Although by no means exclusive, these findings offer some insight into adolescent sexual initiation, reflective of Poland's socio-cultural climate, where adolescent sexuality remains a taboo topic and teenage magazines may be viewed by certain groups of adolescents as a resource for supplementing existing sexual education. 相似文献