Comparison of step-by-step kinematics of resisted,assisted and unloaded 20-m sprint runs

This investigation examined step-by-step kinematics of sprint running acceleration. Using a randomised counterbalanced approach, 37 female team handball players (age 17.8 ± 1.6 years, body mass 69.6 ± 9.1 kg, height 1.74 ± 0.06 m) performed resisted, assisted and unloaded 20-m sprints within a single session. 20-m sprint times and step velocity, as well as step length, step frequency, contact and flight times of each step were evaluated for each condition with a laser gun and an infrared mat. Almost all measured parameters were altered for each step under the resisted and assisted sprint conditions (η² ≥ 0.28). The exception was step frequency, which did not differ between assisted and normal sprints. Contact time, flight time and step frequency at almost each step were different between ‘fast’ vs. ‘slow’ sub-groups (η² ≥ 0.22). Nevertheless overall both groups responded similarly to the respective sprint conditions. No significant differences in step length were observed between groups for the respective condition. It is possible that continued exposure to assisted sprinting might allow the female team-sports players studied to adapt their coordination to the ‘over-speed’ condition and increase step frequency. It is notable that step-by-step kinematics in these sprints were easy to obtain using relatively inexpensive equipment with possibilities of direct feedback.     

Considering student retention as a complex system: a possible way forward for enhancing student retention

This study uses multilayer minimum spanning tree analysis to develop a model for student retention from a complex system perspective, using data obtained from first-year engineering students at a large well-regarded institution in the European Union. The results show that the elements of the system of student retention are related to one another through a network of links and that some of these links were found to be strongly persistent across different scales (group sizes). The links were also seen to group together in different clusters of strongly related elements. Links between elements across a wide range of these clusters would have system-wide influence. It was found that there were no elements that are both persistent and have system-wide effects. This complex system view of student retention explains why actions to enhance student retention aimed at single elements in the system have had such limited impact. This study therefore points to the need for a more system-wide approach to enhancing student retention.     

Football participation legacy and Australia’s qualification for the 2006 Football World Cup

This paper examines the impact of qualification for the 2006 World Cup on football participation in Australia. Australia’s qualification for the 2006 World Cup created widespread media coverage across the country, and this was amplified by the fact that it was only the second time the nation had qualified for the event. Contrary to a number of studies that have examined sport participation legacy and major events, this research presents data that suggest an overall positive trend in Australian football participation post Australia’s successful World Cup qualification. Three of the four demographic categories examined in the study had witnessed increased football participation across the examined period.     

Rapid microfluidic solid-phase extraction system for hyper-methylated DNA enrichment and epigenetic analysis

Genetic sequence and hyper-methylation profile information from the promoter regions of tumor suppressor genes are important for cancer disease investigation. Since hyper-methylated DNA (hm-DNA) is typically present in ultra-low concentrations in biological samples, such as stool, urine, and saliva, sample enrichment and amplification is typically required before detection. We present a rapid microfluidic solid phase extraction (μSPE) system for the capture and elution of low concentrations of hm-DNA (≤1 ng ml⁻¹), based on a protein-DNA capture surface, into small volumes using a passive microfluidic lab-on-a-chip platform. All assay steps have been qualitatively characterized using a real-time surface plasmon resonance (SPR) biosensor, and quantitatively characterized using fluorescence spectroscopy. The hm-DNA capture/elution process requires less than 5 min with an efficiency of 71% using a 25 μl elution volume and 92% efficiency using a 100 μl elution volume.     

Exploration of direct and indirect associations of system-level policy-amenable variables with reading literacy performance

As expectations of the economic impact of educational attainment are soaring (Hanushek & Woessmann, 2009 Hanushek E. A., & Woessmann, L. (2009). Do better schools lead to more growth? Cognitive skills, economic outcomes, and causation (NBER Working Paper, No. 14633). Cambridge, MA: National Bureau of Economic Research.[Crossref] , [Google Scholar]) and conjectures about successful national educational reforms (Mourshed, Chijioke, & Barber, 2010 Mourshed, M., Chijioke, C., & Barber, M. (2010). How the world's most improved school systems keep getting better. Retrieved from http://www.mckinsey.com/client_service/social_sector/latest_thinking/worlds_most_improved_schools[Crossref] , [Google Scholar]) are welcomed by educational policy-makers in many countries, a careful assessment of the empirical evidence for these kinds of claims is needed. In this article, we present a methodology that was applied to an international data set. A multi-level model of education was used to present a hypothetical scenario, indicated as the “implementation scenario”. The scenario was tested on the Programme for International Student Assessment (PISA) 2009 data set by means of multi-level structural equation modelling. Although we find some evidence for direct effects and some support for straightforward implementation, the overall impact of malleable conditions at the system and school level appears disappointingly small. A theoretical strand of literature that would account for “limited malleability” is referred to in discussing these results.     

Secondary Teachers' Interpersonal Behaviour in Singapore,Brunei and Australia: A cross-national comparison

This study investigates the reliability and validity of the Questionnaire on Teacher Interaction (QTI) in three countries: Singapore, Brunei and Australia. The QTI maps student perceptions of interpersonal teacher behaviour and is based on the circumplex Model for Interpersonal Teacher Behaviour (MITB) that investigates the teacher–student relationship in terms of the two dimensions of influence and proximity. Students' perceptions of their teachers in the three countries are also compared. Results show that the QTI scales are represented by two independent dimensions and that scales can be ordered in terms of a circular structure. However, empirical scale locations differ from their theoretical positions as hypothesised by the circumplex model, and among countries. Differences in teacher influence and proximity are also found among the countries.     

Chinese Primary School Mathematics Teachers’ Assessment Profiles: Findings from a Large-Scale Questionnaire Survey

This study investigated Chinese primary school mathematics teachers’ views on assessment in an effort to determine their assessment profiles. A large-scale questionnaire survey with 1101 teachers from 12 Chinese provinces and regions was carried out. The teachers reported to use assessment on a daily or weekly basis for different purposes. They recognized the importance of assessing different types of skills and knowledge and considered assessment useful for improving teaching and learning. To determine teachers’ assessment profiles, we used several latent variable modeling techniques. With exploratory factor analyses, we identified eight factors in the teachers’ responses: general instructional decision-making assessment purposes [1], specific instructional decision-making assessment purposes [2], assessment methods [3], diversity of assessment problem format [4], importance of assessing skills and knowledge [5], importance of assessing extra-curricular skills [6], Perceived usefulness [7], and acceptance of assessment [8]. When these factors were used to interpret the results of a latent class analysis, three distinct assessment profiles could be distinguished. One fifth of the teachers were in the Enthusiastic assessors profile. These teachers not only reported to use assessment frequently [3, 4] and purposefully [1, 2], but also highly endorsed its importance [5, 6] and usefulness [7, 8]. Around half of the teachers were in the Mainstream assessors profile; these teachers scored close to the mean on all factors. The remaining teachers held the relatively negative views on assessment and were therefore in the Unenthusiastic assessors profile. This profile characterization sheds light on Chinese primary school mathematics teachers’ assessment culture.     

In search of an effective source use pattern for writing argumentative and informative synthesis texts

Reading and Writing - In order to design effective instruction and feedback for synthesis writing on both writing processes and products, a clear insight into synthesis writing processes underlying...     

The Impact of Individual,Educational, and Workplace Factors on the Transfer of School-Based Learning into the Workplace

The aim of this study was to investigate the transfer of learning of professional competences from vocational colleges to the workplace context in vocational education. Concretely, the study examined the relations between the professional competences learned at school and the use and further development of those competences at the workplace during the practice module in vocational education programmes in Spain. The study analysed individual, educational design and work environment factors that facilitate or hinder transfer of learning. The study took a multidimensional approach to professional competences by observing four dimensions: hard-specific, hard-generic, interpersonal and intrapersonal. The data collection drew from a questionnaire administered to students of vocational education programmes (N = 379) after they had completed the practice module scheme. A moderation analysis was applied to observe the effect of individual, educational design and workplace factors on the relation between the competences learned at school and those used at the workplace. The findings showed that compulsory placement, school-work alignment, work-based supervisor, access to resources and task complexity are significant moderators between the competences learned at school and those used at the workplace. The study highlights the coherence between the school and workplaces and work environment characteristics as factors conducive to transfer of learning.     

Letter processing in dyslexic subgroups

Hypothesized cognitive strengths and weaknesses of three dyslexic subgroups (Boder and Jarrico 1982) were examined in two reading related experiments. The first experiment tested the prediction that auditorily presented letter sets should be processed better by dyseidetic than by dysphonetic readers. The prediction was not confirmed. The results did not show any modality of presentation-specific recall differences between the three dyslexic subgroups. Overall, dyslexic children’s scores were significantly lower than those of age-matched control groups. The second experiment tested predictions of differential performance of dyseidetic and dysphonetic readers in a task in which the name identity of letters in pairs had to be indicated. Predicted patterns were not confirmed. Compared to the control groups all three dyslexic subgroups (whose means did not differ significantly) made significantly more errors in the condition in which it was essential to activate phonetic representations of the letters. The experimental results of this study suggest a greater similarity in the nature of letter processing problems in dyslexic children than is assumed in Boder and Jarrico’s (1982) subtyping test. This research was supported by grant 634301 from the Department of Special Education, State University of Groningen, and a travel grant from the Netherlands Organization for the Advancement of Pure Research (Z.W.O.). Based on a presentation at the 32nd Annual Conference of The Orton Dyslexia Society, Baltimore, Maryland, November 1982.