The assessment of practical work in school science     

Lars Ulriksen  Lene Møller Madsen  Henriette T. Holmegaard 《Studies in Science Education》2013,49(2):209-244

In this paper we provide an overview of the literature on understandings of drop out/opt out from science, technology and mathematics (STM) higher education programmes. After outlining the literature on students leaving higher education programmes in general, we then explore the research on drop out/opt out from STM programmes in particular, with an emphasis on research since 2000. We show that most of the research focuses on overcoming deficits in students' prior knowledge, but that a more specific focus on identities as an analytical framework for understanding young people leaving STM higher education programmes is also emerging. We show that it is important to shift from considering drop out as an individual problem for the student to regard it as a feature of the relationship between students and their study programmes. In the same way, measures to increase retention rates must shift from focusing on individual student adaptation to studies addressing institutional change. However, this change is difficult since it is entwined with fundamental conceptions of science and teaching.  相似文献   

Older adults’ experiences of a reablement process. “To be treated like an adult,and ask for what I want and how I want it”     

Gunnel Östlund  Viktoria Zander  Magnus Lars Elfström  Lena-Karin Gustavsson  Els-Marie Anbäcken 《Educational gerontology》2013,39(8):519-529

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Student and Faculty Member Engagement in Undergraduate Research     

Karen L. Webber  Thomas F. Nelson Laird  Allison M. BrckaLorenz 《Research in higher education》2013,54(2):227-249

Undergraduate research (UR) is a valued co-curricular activity that has involved an increasing number of students and faculty members in recent years. While there is a growing body of research on student participation in UR, there is less research available examining faculty perceptions of, participation in UR, and how those factors influence student participation in UR. This study examined approximately 110,000 responses to the National Survey of Student Engagement and 40,000 responses to the Faculty Survey of Student Engagement at over 450 four-year institutions. Findings revealed that individual and institutional characteristics predicted student and faculty member involvement and that the majority of faculty members perceived UR to be of importance. Implications for fostering faculty involvement, student success, and viewing UR as an institutional asset are discussed.  相似文献   

How many young generations are there? – A typology of teenagers’ climate change awareness in Germany and Austria     

Alina Kuthe  Lars Keller  Annemarie Körfgen  Hans Stötter  Anna Oberrauch  Karl-Michael Höferl 《The Journal of environmental education》2013,44(3):172-182

Abstract

Under the premise that the young generation of teenagers cannot be considered to be uniform, this study identified groups of teenagers based on their level of climate change awareness. Questionnaires answered by 760 teenagers (13–16?years old) from Germany and Austria were analyzed using a hierarchical cluster analysis. The teenagers were assigned to four groups that differed as to their cognitive, affective and conative aspects of climate change awareness. Based on the empirical results, the authors argue that there are different subgroups of young people in terms of climate change awareness, which climate change education should take into consideration.  相似文献   

The role of lead users in knowledge sharing     

Lars Bo Jeppesen  Keld Laursen 《Research Policy》2009,(10):1582-1589

This paper introduces a model of knowledge sharing in an online community of practice that suggests that knowledge contributions will be made by those who possess the relevant knowledge. For them, matching a ready-made solution to a problem is low cost. We hypothesize that lead users – due to their characteristics – are likely to possess more relevant solution knowledge and thus be centrally involved in contributing knowledge. Our results support the hypothesis by showing that lead user characteristics relate positively to making contributions to the community. In addition, we find that search and integration of knowledge from different external sources of relevance to the community positively moderates knowledge contributions by lead users.  相似文献   

What do coaches orchestrate? Unravelling the ‘quiddity’ of practice     

Robyn L. Jones  Lars Tore Ronglan 《Sport, Education and Society》2018,23(9):905-915

The general purpose of this article is threefold. Firstly, it is to further the notion of coaching as orchestration through developing insight into precisely how and what coaches orchestrate. Secondly, it is to firmly position coaching as a relational practice, whilst thirdly it is to better define coaching’s complex nature and how it can be somewhat ordered. Following an introduction where the purpose and value of the article are outlined, we present the reflective method of critical companionship through which we explored and addressed the aforementioned purposes. The case for the quiddity, or the ‘just whatness’ (i.e. the inherent nature or essence) of coaching as involving complex, relational acts which can be somewhat explained through recourse to the developing theory of orchestration is subsequently made. In doing so, two precise examples of how we as coaches orchestrate sporting practice are presented. The article concludes with both a summary of the principal argument(s) made, and some reflective considerations for future directions.  相似文献   

Influence of different attentional focus on EMG amplitude and contraction duration during the bench press at different speeds     

Joaquin Calatayud  Jonas Vinstrup  Markus D. Jakobsen  Emil Sundstrup  Juan Carlos Colado  Lars L. Andersen 《Journal of sports sciences》2018,36(10):1162-1166

The purpose of this study was to investigate whether using different focus affects electromyographic (EMG) amplitude and contraction duration during bench press performed at explosive and controlled speeds. Eighteen young male individuals were familiarized with the procedure and performed the one-maximum repetition (1RM) test in the first session. In the second session, participants performed the bench press exercise at 50% of the 1RM with 3 different attentional focuses (regular focus on moving the load vs contracting the pectoralis vs contracting the triceps) at 2 speed conditions (controlled vs maximal speed). During the controlled speed condition, focusing on using either the pectoralis or the triceps muscles increased pectoralis normalized EMG (nEMG) by 6% (95% CI 3–8%; p = 0.0001) and 4% nEMG (95% CI 1–7%; p = 0.0096), respectively, compared with the regular focus condition. Triceps activity was increased by 4% nEMG (95% CI 0–7%; p = 0.0308) at the controlled speed condition during the triceps focus. During the explosive speed condition, the use of different focuses had no effect. The different attentional focus resulted in comparable contraction duration for the measured muscles when the exercise was performed explosively. Using internal focus to increase EMG amplitude seems to function only during conditions of controlled speed.  相似文献   

Professional support staff at higher education institutions in Sweden: roles and success factors for the job     

Ryttberg  Malin  Geschwind  Lars 《Tertiary Education and Management》2017,23(4):334-346

This paper aims to analyse and discuss the professional support staff at higher education institutions in Sweden in terms of how they view their roles and what the success factors for them are. The study is based on semi-structured interviews with support staff from the fields of business liaison, internationalisation and strategic research support. The results show that the participants have shaped their own roles and see themselves as back-office staff. This can make it challenging for them to prove their contribution to the academic activities of education and research. Because they neither identify themselves as administrators nor hold academic positions, their ability to build credibility on a personal basis is a central success factor. Aware of being actors in a culture dominated by academic values and norms, they see a more transparent discussion of their roles as a desirable development in the sector.  相似文献   

The effects of sodium bicarbonate ingestion on cycling performance and acid base balance recovery in acute normobaric hypoxia     

Lewis A. Gough  Sanjoy K. Deb  Danny Brown  S. Andy Sparks  Lars R. McNaughton 《Journal of sports sciences》2019,37(13):1464-1471

This study investigated the effects of two separate doses of sodium bicarbonate (NaHCO₃) on 4 km time trial (TT) cycling performance and post-exercise acid base balance recovery in hypoxia. Fourteen club-level cyclists completed four cycling TT’s, followed by a 40 min passive recovery in normobaric hypoxic conditions (FiO₂ = 14.5%) following one of either: two doses of NaHCO₃ (0.2 g.kg^?1 BM; SBC2, or 0.3 g.kg^?1 BM; SBC3), a taste-matched placebo (0.07 g.kg^?1 BM sodium chloride; PLA), or a control trial in a double-blind, randomized, repeated-measures and crossover design study. Compared to PLA, TT performance was improved following SBC2 (p = 0.04, g = 0.16, very likely beneficial), but was improved to a greater extent following SBC3 (p = 0.01, g = 0.24, very likely beneficial). Furthermore, a likely benefit of ingesting SBC3 over SBC2 was observed (p = 0.13, g = 0.10), although there was a large inter-individual variation. Both SBC treatments achieved full recovery within 40 min, which was not observed in either PLA or CON following the TT. In conclusion, NaHCO₃ improves 4 km TT performance and acid base balance recovery in acute moderate hypoxic conditions, however the optimal dose warrants an individual approach.  相似文献   

Multiple-joint exercises using elastic resistance bands vs. conventional resistance-training equipment: A cross-over study     

Vegard M. Iversen  Paul Jarle Mork  Ottar Vasseljen  Ronny Bergquist  Marius S. Fimland 《European Journal of Sport Science》2017,17(8):973-982

Previous studies indicate that elastic resistance bands (ERB) can be a viable option to conventional resistance-training equipment (CRE) during single-joint resistance exercises, but their efficacy has not been established for several commonly used multiple-joint resistance exercises. Thus, we compared muscular activation levels in four popular multiple-joint exercises performed with ERB (TheraBand^®) vs. CRE (Olympic barbell or cable pulley machines). In a cross-over design, men and women (n?=?29) performed squats, stiff-legged deadlifts, unilateral rows and lateral pulldown using both modalities. Multilevel mixed-effects linear regression analyses of main and interaction effects, and subsequent post hoc analyses were used to assess differences between the two resistance-training modalities. CRE induced higher levels of muscle activation in the prime movers during all exercises (p?<?.001 for all comparisons), compared to muscle activation levels induced by ERB. The magnitude of the differences was marginal in lateral pulldown and unilateral rows and for the erector spinae during stiff-legged deadlifts. In squats the quadriceps femoris activations were substantially lower for ERB. The differences between ERB and CRE were mostly observed during the parts of the contractions where the bands were relatively slack, whilst the differences were largely eliminated when the bands became elongated in the end ranges of the movements. We conclude that ERB can be a feasible training modality for lateral pulldowns, unilateral rows and to some extent stiff-legged deadlifts, but not for the squat exercise.  相似文献