Comparison of starts and turns of national and regional level swimmers by individualized-distance measurements

The aim of this study was to compare the race characteristics of the start and turn segments of national and regional level swimmers. In the study, 100 and 200-m events were analysed during the finals session of the Open Comunidad de Madrid (Spain) tournament. The “individualized-distance” method with two-dimensional direct linear transformation algorithm was used to perform race analyses. National level swimmers obtained faster velocities in all race segments and stroke comparisons, although significant inter-level differences in start velocity were only obtained in half (8 out of 16) of the analysed events. Higher level swimmers also travelled for longer start and turn distances but only in the race segments where the gain of speed was high. This was observed in the turn segments, in the backstroke and butterfly strokes and during the 200-m breaststroke event, but not in any of the freestyle events. Time improvements due to the appropriate extension of the underwater subsections appeared to be critical for the end race result and should be carefully evaluated by the “individualized-distance” method.     

Through Student Eyes: Perceptions and Aspirations of Students from the Armenian State Agrarian University and Selected European Universities

Abstract

This research compared attributes of students enrolled in the Armenian State Agrarian University (ASAU) with university students from 30 European countries (EFMD) about graduate study policy issues. A cross-national comparative design used a survey questionnaire to explore contextual, social and cultural phenomena. Samples included 801 ASAU and 3,265 EFMD students. Demographics of samples were similar. Students were largely unaware of the Bologna reforms and the impact on study abroad. Slightly more than half of EFMD participants were in a bachelor's programme compared to 96% of ASAU students. ASAU students held a more pragmatic rationale for foreign study, ranking ‘advancing professional careers’ as the top reason, while EFMD students chose ‘overall experience’. Obstacles included bureaucracy, funding and accommodations. Although groups had similar geographical preferences for foreign study, Eastern Europe was more preferred by ASAU students. Half of the EFMD students planned graduate enrollment ‘immediately following the degree’ compared to one-quarter of ASAU students. Half of the EFMD students were aware of mobility scholarships compared to three-quarters of ASAU students. One in two EFMD students reported university media rankings important compared to one in seven ASAU students.

The Bologna Declaration accelerated horizontal collaboration among European universities. Students have a larger collective voice in curriculum change. The findings of this research provide a better understanding of student aspirations, motivations, expectations and barriers. These findings can contribute to guiding policies and procedures for recruitment, admission, retention and mobility.     

Evolutionary Maps: A new model for the analysis of conceptual development,with application to the diurnal cycle

This paper presents a model of how children generate concrete concepts from perception through processes of differentiation and integration. The model informs the design of a novel methodology (evolutionary maps or emaps), whose implementation on certain domains unfolds the web of itineraries that children may follow in the construction of concrete conceptual knowledge and pinpoints, for each conception, the architecture of the conceptual change that leads to the scientific concept. Remarkably, the generative character of its syntax yields conceptions that, if unknown, amount to predictions that can be tested experimentally. Its application to the diurnal cycle (including the sun's trajectory in the sky) indicates that the model is correct and the methodology works (in some domains). Specifically, said emap predicts a number of exotic trajectories of the sun in the sky that, in the experimental work, were drawn spontaneously both on paper and a dome. Additionally, the application of the emaps theoretical framework in clinical interviews has provided new insight into other cognitive processes. The field of validity of the methodology and its possible applications to science education are discussed.     

Students’ continuity norms in the university and exam calendar: do they affect university academic performance? / Normas de permanencia y calendario de exámenes: ¿afectan al rendimiento académico universitario?

Students’ academic performance is a key factor in evaluating the efficiency and quality of university degree programmes. Not only do personal characteristics and the students’ own performance affect these results, but so does the university’s academic organization. Based on a database that contains the overall results by course and exam period in three different degree programmes from 2007–15, we estimate what external factors influenced the percentages of students sitting for and passing exams. The analysis of the data panel shows that the order of the exams and the students’ continuity norms established by the university to penalize failing grades are two incentives that improve student performance only in the ordinary exam periods. These results also imply first keeping the incentive system at the university and secondly strategically using the exam calendar for the courses with the worst overall results.     

Using structural contexts to compress semistructured text collections

We describe a compression model for semistructured documents, called Structural Contexts Model (SCM), which takes advantage of the context information usually implicit in the structure of the text. The idea is to use a separate model to compress the text that lies inside each different structure type (e.g., different XML tag). The intuition behind SCM is that the distribution of all the texts that belong to a given structure type should be similar, and different from that of other structure types.     

Effects of adding a weekly eccentric-overload training session on strength and athletic performance in team-handball players

To investigate the influence of adding a weekly eccentric-overload training (EOT) session in several athletic performance’s tests, 18 team-handball players were assigned either to an EOT (n?=?11) or a Control (n?=?7) group. Both groups continued to perform the same habitual strength training, but the EOT group added one session/week during a 7-week training programme consisting of four sets of eight repetitions for the bilateral half-squat and unilateral lunge exercises. The test battery included handball throwing velocity, maximum dynamic strength (1RM), countermovement jump (CMJ), 20?m sprint, triple hop for distance, and eccentric/concentric power in both the half-squat and lunge exercises. Data were analysed using magnitude-based inferences. Both groups improved their 1RM in the half squat, 20?m sprint time, and CMJ performance to a similar extent, but the EOT group showed a beneficial effect for both right [(42/58/0), possibly positive] and left [(99/1/0), very likely positive] triple hop for distance performance. In addition, the EOT group showed greater power output improvements in both eccentric and concentric phases of the half-squat (difference in percent of change ranging from 6.5% to 22.0%) and lunge exercises (difference in per cent of change ranging from 13.1% to 24.9%). Nevertheless, no group showed changes in handball throwing velocity. Selected variables related to team-handball performance (i.e. functional jumping performance, power output) can be improved by adding a single EOT session per week, highlighting the usefulness of this low-volume/high-intensity training when aiming at optimizing dynamic athletic performance.     

Islamic glasses from Al-Andalus. Characterisation of materials from a Murcian workshop (12th century AD, Spain)

Rescue archaeological excavations at an urban glass workshop of the 12th century AD in the city of Murcia (Spain) have provided one of the few evidences of glass production in the ancient Islamic territory of Al-Andalus. This paper reports the results derived from a chemical–physical characterisation study carried out on a representative sample set of glass fragments and industrial debris from that workshop. The main objectives of the research were to contribute to the knowledge of the type of glasses produced and provide some insights into the technology developed to obtain different colours in glasses. The resulting data indicated that both high-magnesia plant ash (HMG) soda-lime-silicate and soda-lime lead-silicate glasses were produced. They also indicated a deep knowledge of glass colouring techniques, which suggests that a careful control over the glass melting processes was achieved. Among others, the occurrence of bulk-coloured silver yellow and copper ruby red transparent glasses prove the skills reached by Murcian glassmakers. These results shed new light on the Islamic glass technology of a geographical area in which, up to now, little compositional and technological data from glass workshops were available.