Automatic evaluation of digital libraries with 5SQual     

Bárbara L. Moreira  Marcos André Gonçalves  Alberto H.F. Laender  Edward A. Fox 《Journal of Informetrics》2009,3(2):102-123

Digital libraries (DLs) are complex information systems which can present changes in their structure, content, and services. These complexities and dynamics make system maintenance a non-trivial task, since it requires periodical evaluation of the different DL components. Generally, these evaluations are customized per system and are performed only when problems occur and administrator intervention is required. This work aims to change the situation. We present 5SQual, a tool which provides ways to perform automatic and configurable evaluations of some of the most important DL components, among them, digital objects, metadata, and services. The tool implements diverse numeric indicators that are associated with eight quality dimensions described in the 5S quality model. Its generic architecture was developed to be applicable to various DLs and scenarios. In sum, the main contributions of this work include: (i) the design and implementation of 5SQual, a tool that validates a theoretical DL quality model; (ii) the demonstration of the applicability of the tool in several usage scenarios; and (iii) the evaluation (with usability specialists) of its graphical interface specially designed to guide the configuration of 5SQual evaluations. We also present the results of interviews conducted with administrators of real DLs regarding their expectations and opinions about 5SQual.  相似文献   

A model for the effective engagement of all stakeholders in engineering education and its pilot implementation     

Bárbara Filipa Casqueria Coelho Gabriel  João Alexandre Dias-de-Oliveira  Victor Fernando Santos Neto  António Gill D’Orey De Andrade-Campos 《European Journal of Engineering Education》2018,43(6):950-966

Methodologies for engineering learning and teaching (MELT) approach aims to enhance the attractiveness of education through science, technology, engineering and mathematics (STEM) among young people, while promoting awareness of future careers in these areas. To this end, students’ expectations are considered within university programmes, aiming to an increased engagement in STEM careers. To accomplish these goals, a new and integrated approach (MELT) is presented, involving the main stakeholders in both scientific education and society. An education framework is presented, providing guidelines for an improved collaborative approach to STEM education in the future. Results from the pilot implementation of MELT are presented, from a small-scale education parliament prototype. From these initial stage and results, it is seen that there is a need for a proper alignment of expectations from all involved stakeholders, concerning the engineering education towards society’s demands.  相似文献   

Assessing quality characteristics of center-based early childhood environments in Germany and Portugal: A cross-national study     

Wolfgang Tietze  Joaquim Bairrão  Teresa Barreiros Leal  Hans-Guenther Rossbach 《European Journal of Psychology of Education - EJPE》1998,13(2):283-298

Based on the knowledge that direct assessment of the quality of early childhood educational environments is becoming more and more important, this article deals with a coordinated adaptation of the Early Childhood Environment Rating Scale (ECERS) in Germany and Portugal. The ECERS, developed by Harms and Clifford (1980), is a complex rating scale, comprising 37 items, which is implemented to assess major quality characteristics of early childhood classrooms and has been used quite extensively in the US as well as in other countries. In this article we describe how the scale was adapted and we report selected results of a jointly coordinated comparative study on a sample of 103 early childhood classrooms in Germany and 88 in Portugal. The classrooms were classified according to three different types in each country. In particular, we report the item characteristics of the adapted versions, reliabilities and intercorrelations of the total scale and the apriori-subscales, and results of factor analyses. A one-way ANOVA indicates group differences between the six types of classrooms which can be meaningfully interpreted.  相似文献   

Antecedents and consequents of student satisfaction in higher technical-vocational education: evidence from Brazil     

de Oliveira Silva  Jorge Henrique  de Sousa Mendes  Glauco Henrique  Ganga  Gilberto Miller Devós  Mergulhão  Ricardo Coser  Lizarelli  Fabiana Letícia 《International Journal for Educational and Vocational Guidance》2020,20(2):351-373

International Journal for Educational and Vocational Guidance - This article proposes a model of antecedents and consequences of student satisfaction in Higher Technical-Vocational Education (HTVE)...  相似文献   

Effect of hand paddles and parachute on backstroke coordination and stroke parameters     

Thiago Telles  Renato Barroso  Pedro Figueiredo  Diego Fortes de Souza Salgueiro  João Paulo Vilas-Boas  Orival Andries Junior 《Journal of sports sciences》2017,35(9):906-911

Hand paddles and parachutes have been used in order to overload swimmers, and consequently increase the propulsive force generation in swimming. However, their use may affect not only kinematical parameters (average speed, stroke length and stroke rate), but also time gaps between propulsive phases, assessed through the index of coordination (IdC). The objective of this study was to assess the effects of hand paddles and parachute use, isolated or combined, on kinematical parameters and coordination. Eleven swimmers (backstroke 50-m time: 29.16 ± 1.43 s) performed four 15-m trials in a randomised order at maximal intensity: (1) without implements (FREE), (2) with hand paddles (HPD), (3) with parachute (PCH) and (4) with hand paddles plus parachute (HPD+PCH). All trials were video-recorded (60 Hz) in order to assess average speed, stroke rate, stroke length, five stroke phases and index of coordination. When average swimming speed was compared to FREE, it was lower in PCH and HPD+PCH, and higher in HPD. Stroke rate decreased in all overloaded trials compared to FREE. The use of hand paddles and parachute increased and decreased stroke length, respectively. In addition, propulsive phase duration was increased when hand paddles were used, and time gaps shifted towards zero (no time gap), especially when hand paddles were combined with parachute. It is conceivable that the combined use of hand paddles and parachute, once allowing overloading both propulsive and resistive forces, provides a specific stimulus to improve muscle strength and propulsive continuity.  相似文献   

Determination of a quantitative parameter to evaluate swimming technique based on the maximal tethered swimming test     

Rafael Soncin  Bruno Mezêncio  Jacielle Carolina Ferreira  Sara Andrade Rodrigues  Rudolf Huebner  Julio Cerca Serrão 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(2):248-257

The aim of this study was to propose a new force parameter, associated with swimmers’ technique and performance. Twelve swimmers performed five repetitions of 25 m sprint crawl and a tethered swimming test with maximal effort. The parameters calculated were: the mean swimming velocity for crawl sprint, the mean propulsive force of the tethered swimming test as well as an oscillation parameter calculated from force fluctuation. The oscillation parameter evaluates the force variation around the mean force during the tethered test as a measure of swimming technique. Two parameters showed significant correlations with swimming velocity: the mean force during the tethered swimming (r = 0.85) and the product of the mean force square root and the oscillation (r = 0.86). However, the intercept coefficient was significantly different from zero only for the mean force, suggesting that although the correlation coefficient of the parameters was similar, part of the mean velocity magnitude that was not associated with the mean force was associated with the product of the mean force square root and the oscillation. Thus, force fluctuation during tethered swimming can be used as a quantitative index of swimmers’ technique.  相似文献   

Effect of dual-attention task on attack and defensive actions in fencing     

Marcos Gutiérrez-Davila  Carmen Gutiérrez-Cruz  Enrique Navarro 《European Journal of Sport Science》2017,17(8):1004-1012

The objectives of this study were to investigate the effect that the presence of two stimuli that require two different responses (dual-attention) has both, on offensive reaction-response time to a light stimulus, and on defensive response time when the stimulus is a real fencing attack. Twenty-five elite fencers and a fencing master were included in the study. The equipment included four force plates adapted to a scaffold that served as a fencing piste. Two force plates were placed, at the start position, under the fencer’s feet and another two plates were placed under the master’s feet. The results demonstrate that choice reaction time to visual stimuli increases in dual-task conditions with respect to simple reaction time, whereas the mean horizontal force tends to decrease in dual-task. However, when the stimulus was an opponent’s movement, dual-task conditions did not have any effect on the time required to initiate a defensive action. The changes in reaction time when real movements were used as stimuli challenge the validity of the reaction time to visual stimuli paradigm as a predictor of performance in fencing. Also, the results obtained demonstrate that perceptual and attentional processes play a major role in fencer performance in real competition.  相似文献   

Does intensity really matter regarding aerobic exercise reductions in wave reflection and central hemodynamics? Commentary on "The effect of acute aerobic exercise on central arterial stiffness,wave reflections,and hemodynamics in adults with diabetes: A randomized cross-over design"by Way et al.     

Wendell Arthur Lopes  Jo?o Carlos Locatelli  Caroline Ferraz Sim?es  Rogério Toshiro Passos Okawa 《运动与健康科学(英文)》2021,(4):507-509

We read with great interest the study by Way et al.1 pub-lished in this journal, which described and compared the acute changes in central arterial stiffness (A...  相似文献   

Teachers’ professional practice conducting mathematical discussions     

João Pedro da Ponte  Marisa Quaresma 《Educational Studies in Mathematics》2016,93(1):51-66

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Ansätze interdisziplinärer Forschung im Bereich der Sportwissenschaft     

H. de Marées 《Sportwissenschaft》1982,12(2):218-221

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