Biomechanical jumping differences among elite female handball players with and without previous anterior cruciate ligament reconstruction: a novel inertial sensor unit study

Persistent biomechanical and jumping capacity alterations have been observed among female athletes who have sustained anterior cruciate ligament (ACL) injuries. The purpose of this study was to examine if biomechanical jumping differences persist among a cohort of elite female handball players with previous ACL reconstruction several years after return to top-level competition. In order to achieve this goal, a direct mechanics simplified analysis by using a single Inertial Sensor Unit (IU) was used. Twenty-one elite female (6 anterior cruciate ligament reconstructed and 15 uninjured control players) handball players were recruited and evaluated 6.0 ± 3.5 years after surgical anterior cruciate ligament reconstruction. Bilateral and unilateral vertical jumps were performed to evaluate the functional performance and a single inertial sensor unit was employed in order to collect 3D acceleration and 3D orientation data. Previously ACL-reconstructed analysed athletes demonstrated significant (p < 0.05) alterations in relation to the three-dimensional axis (X–Y–Z) supported accelerations and differing jump phase durations, including jumping performance values, in both bilateral and unilateral jumping manoeuvres several years after ACL reconstruction. Identification of the encountered deficits through the use of an IU devise could provide clinicians with a new reliable tool for movement analysis in a clinical setting.     

A review of altmetrics as an emerging discipline for research evaluation

This article analyses the scientific production of publications on altmetrics as an emergent discipline for research evaluation. The research objective was to identify the investigative tendencies that characterize the subject. The analysis studied documents indexed by Web of Science and Scopus databases. About 253 documents were retrieved, showing a growth in articles 2005–2015. We discovered that the most productive authors, journals, institutions, and countries were from Europe and North America. The collaboration networks between authors and institutions reveal a homogenous community formed by the most prolific contributors. The most explored subjects deal with (1) social media and networking, (2) internet, (3) scholarly and scientific communication and publication, (4) open access and public libraries, (5) citation analysis, (6) impact factor measurements, (7) metric disciplines, (8) information analysis, retrieval, and processing, (9) search engines and data bases, and (10) evaluative bibliometrics. We discovered a nucleus of contributors who have attempted to solidify the knowledge area, with emerging principles of high theoretical consistency.     

Video for teaching: classroom use,instructor self-production and teachers’ preferences in presentation format

ABSTRACT

This study explores the use of digital videos in education, from the perspective of the teacher as an agent of technological integration. Secondary and university teachers were surveyed in a region-wide case study. Three topics were specifically surveyed: common uses of digital video in teaching, instructor self-production of educational videos, and preferences in common presentation formats (chalk-and-talk, screencast, PowerPoint, demonstration and whiteboard writing). Results show that secondary teachers make more use of digital video and are more innovative than university teachers. Video self-production is scarce, though respondents declare a positive attitude, with time constraints and technical qualification as main reported obstacles. Preferences in video presentation formats reveal notable differences between secondary and university teachers for some formats. Preferences are also moderately influenced by the teacher’s knowledge field, and by experience with ICT and video production.     

Assessing efficiency in the Spanish public universities through comparative non-radial and radial data envelopment analysis

In this study we have used data from Spanish public universities to assess their efficiency in a longitudinal framework between 2008/9–2014/15. To carry out the analysis, two windows data envelopment analysis and intertemporal, non-radial and radial analysis methodologies were compared. The main results show a significant deterioration in university efficiency from the 2012/13 academic year for the three proposed frontiers, with both methodologies. Some factors may explain these results, such as the ageing of teaching force and its low replacement rate of 10%, and the lack of incentives for young researchers who wish to pursue a research career, influenced by the presence of endogamy, in hiring or promotion. Finally, the resources necessary for the good governance of the Spanish public university with the consequent accountability of these, in terms of teaching, research and its transfer to society, could become a strategic issue that should be taken into account by all the actors involved.

     

The impact of a university teaching development programme on student approaches to studying and learning experience: evidence from Chile

In this paper, we analyse the impact of teacher participation in a University Teaching Diploma on student approaches to studying and learning experience. A quasi-experimental and multilevel design was employed. University teachers answered the Approaches to Teaching Inventory and students completed the Course Experience Questionnaire and the Study Process Questionnaire. In addition, contextual variables were included for both teachers and students. The total sample included 44 teachers and 686 students. Of these, 25 university teachers had completed the University Teaching Diploma and 19 had not; 373 students were in courses with a diploma teacher and 313 in courses were not. Results show that those university teachers who have completed the programme have, in their courses, students who were more likely to declare having adopted a deep approach to studying than those teachers who have not participated in the diploma. At the same time, no significant impact was found on the student learning experience. For practical purposes, this investigation provides evidence for the value of teaching development programmes in promoting deeper approaches to studying. For research purposes, it proposes the use of multilevel models to evaluate the impact of university teaching diplomas.     

We can,we know how. But do we want to? Teaching attitudes towards ICT based on the level of technology integration in schools

Teachers’ attitudes towards technology are crucial to foster its use in schools and to improve its educational affordances and this is still a topic for research. This article relates the attitudes school teachers have towards information and communication technologies (ICT) with the different levels of technology integration in schools. A multiple case-study research methodology was applied, and in which the school was the unit of sampling used. Thirty-five schools from eight Spanish regions were selected, and 1222 questionnaires were collected, representing 78.9% of the sample. Three combined variables were utilised to classify schools in four different levels of technology integration. Results suggest level 4 school teachers exhibit better attitudes towards ICT, which results in creating a positive circle which improves the learning process. This becomes relevant for teacher education and professional development, as effective ICT integration in the classroom can perform as a catalyst for educational innovation.     

Visuospatial processing improvements in students with Down Syndrome through the autonomous use of technologies

The main purpose of our study was to examine whether autonomous training through the use of technologies could be associated with improvements in selective attention, visuospatial short-term memory and visuospatial processing in students with Down Syndrome (DS). In addition, our study aimed to analyse how the improvements in selective attention and visuospatial short-term memory tasks could predict improvements in visuospatial processing. Twenty-six children and adolescents with DS who belong to specialized schools for ID participated in the study. Three different mobile applications, Bubbles (selective attention), Pairs and Learn (visuospatial short-term memory) and Tangram (visuospatial processing) developed by Smile and Learn were used during a three-month period by the students. The results showed significant improvements through training in both, Pairs and Learn and Tangram, whereas there was no significant improvement in Bubbles. The results also showed that Pairs and Learn performance could predict a 36% variance in Tangram one. Cognitive and educational implications of these results are discussed.     

Athletes’ perceptions of coaching competency and team conflict in sport teams: A multilevel analysis

The purpose of this study was to examine the relationship between coaching competency and team conflict, at individual and team levels, over the season. The participants were professional female and male soccer players, who participated in the First and Second Division. A longitudinal study was performed. At Time 1, the sample of participants consisted of 581 soccer players aged between 15 and 39 years. At Time 2, 549 players were recruited from the original sample aged between 15 and 37 years. Finally, at Time 3, the sample comprised 576 players aged between 15 and 37 years. All participants completed a multi-section questionnaire assessing coaching competency (motivation, game strategy, technique competency, and character-building competency) and team conflict (task conflict and relationship conflict). Results showed that both task and relationship conflict increased significantly over time. Multilevel modelling analysis showed that game strategy and character-building competencies negatively predicted both task and relationship conflicts at the individual level, whereas motivation competency was also added as a significant predictor of task conflict at the team level. Moreover, technique competency positively predicted task conflict at the team level. The current study suggests the importance of coaching competency in group dynamics in sport.     

Robust stability analysis of formation control in local frames under time-varying delays and actuator faults

This paper investigates the robust stability of a multiagent system moving to a desired rigid formation in presence of unknown time-varying communication delays and actuator faults. Each agent uses relative position measurements to implement the proposed control method, which does not require common coordinate references. However, the presence of time delays in the measurements, which is inherent to the communication links between agents, has a negative impact in the control system performance leading, in some cases, to instability. Furthermore, the robust stability analysis becomes more complex if failures on actuators are taken into account. In addition, delays may be subject to time variations, depending on network load, availability of communication resources, dynamic routing protocols, or other environmental conditions. To cope with these problems, a sufficient condition based on Linear Matrix Inequalities (LMI) is provided to ensure the robust asymptotic convergence of the agents to the desired formation. This condition is valid for any arbitrarily fast time-varying delays and actuator faults, given a worst-case point-to-point delay. Finally, simulation results show the performance of the proposed approach.     

Can Interactive Web-based CAD Tools Improve the Learning of Engineering Drawing? A Case Study

Many current Web-based learning environments facilitate the theoretical teaching of a subject but this may not be sufficient for those disciplines that require a significant use of graphic mechanisms to resolve problems. This research study looks at the use of an environment that can help students learn engineering drawing with Web-based CAD tools, including a self-correction component. A comparative study of 121 students was carried out. The students were divided into two experimental groups using Web-based interactive CAD tools and into two control groups using traditional learning tools. A statistical analysis of all the samples was carried out in order to study student behavior during the research and the effectiveness of these self-study tools in the learning process. The results showed that a greater number of students in the experimental groups passed the test and improved their test scores. Therefore, the use Web-based graphic interactive tools to learn engineering drawing can be considered a significant improvement in the teaching of this kind of academic discipline.