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121.
Helena Pedrosa de Jesus Aurora Coelho Moreira 《Assessment & Evaluation in Higher Education》2009,34(2):193-208
The quality of teaching and learning has been one of the major concerns of foundation chemistry disciplines for science and engineering undergraduates at the University of Aveiro, Portugal. Student‐centred approaches are being continuously developed, exploring ways of stimulating active and meaningful student learning by encouraging questioning by students. The development of questioning competences is regarded as fundamental, particularly in science education. In order to reinforce adequate alignment with teaching strategies, a new assessment method was implemented during the academic year of 2004–2005. This study is mainly aimed at exploring the use and integration of students’ questions as alternative assessment tools. Written formative and summative problem‐based cases were designed for these purposes. The questions raised by students during those assignments were analysed according to their cognitive level, relationship and orientation to the problem posed, herein considered to be quality indicators for learners’ questions. The findings suggest a deep engagement of students within these situations along the year, supporting the use of these alternative assessment tools as a way of fostering students’ questioning capability. Results also reveal that it is possible to achieve, with students’ questions placed at the centre of these processes, alignment between teaching, learning and assessment. 相似文献
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124.
Walter H. Curioso Jesus Peinado Crisogono F. Rubio Marcela Lazo‐Escalante Jesus M. Castagnetto 《Health information and libraries journal》2009,26(3):246-251
Introduction
This issue of the feature column reports on developments in Peru on the use of information and communication technologies to improve public health. The authors describe how cell phones and hand‐held devices are being deployed to monitor diseases. Recent concerns about the spread of swine flu highlight the importance of robust public health systems in developing countries. 1 Jeannete MurphyReference
1 Swine flu could be a disaster for weak public health systems in developing countries . British Journal of Healthcare Computing and Information Management , 30 April 2009. http://www.bjhcim.co.uk/news/2009/n904046.htm (accessed 18/05/09). 相似文献125.
Mohamed Assaad Hamida Alain Glumineau Jesus de Leon 《Journal of The Franklin Institute》2012,349(5):1734-1757
In this paper, a sensorless speed control for interior permanent magnet synchronous motors (IPMSM) is designed by combining a robust backstepping controller with integral actions and an adaptive interconnected observer. The IPMSM control design generally requires rotor position measurement. Then, to eliminate this sensor, an adaptive interconnected observer is designed to estimate the rotor position and the speed. Moreover, a robust nonlinear control based on the backstepping algorithm is designed where an integral action is introduced in order to improve the robust properties of the controller. The stability of the closed-loop system with the observer–controller scheme is analyzed and sufficient conditions are given to prove the practical stability. Simulation results are shown to illustrate the performance of the proposed scheme under parametric uncertainties and low speed. Furthermore, the proposed integral backstepping control is compared with the classical backstepping controller. 相似文献
126.
Josué Gómez-Molina Ana Ogueta-Alday Jesus Camara Christopher Stickley Juan García-lópez 《European Journal of Sport Science》2018,18(2):162-169
Concurrent plyometric and running training has the potential to improve running economy (RE) and performance through increasing muscle strength and power, but the possible effect on spatiotemporal parameters of running has not been studied yet. The aim of this study was to compare the effect of 8 weeks of concurrent plyometric and running training on spatiotemporal parameters and physiological variables of novice runners. Twenty-five male participants were randomly assigned into two training groups; running group (RG) (n?=?11) and running + plyometric group (RPG) (n?=?14). Both groups performed 8 weeks of running training programme, and only the RPG performed a concurrent plyometric training programme (two sessions per week). Anthropometric, physiological (VO2max, heart rate and RE) and spatiotemporal variables (contact and flight times, step rate and length) were registered before and after the intervention. In comparison to RG, the RPG reduced step rate and increased flight times at the same running speeds (P?.05) while contact times remained constant. Significant increases in pre- and post-training (P?.05) were found in RPG for squat jump and 5 bound test, while RG remained unchanged. Peak speed, ventilatory threshold (VT) speed and respiratory compensation threshold (RCT) speed increased (P?.05) for both groups, although peak speed and VO2max increased more in the RPG than in the RG. In conclusion, concurrent plyometric and running training entails a reduction in step rate, as well as increases in VT speed, RCT speed, peak speed and VO2max. Athletes could benefit from plyometric training in order to improve their strength, which would contribute to them attaining higher running speeds. 相似文献
127.
Francisco Cuenca-Fernández Gracia López-Contreras Luis Mourão Karla de Jesus Kelly de Jesus Rodrigo Zacca 《Journal of sports sciences》2019,37(4):443-451
This study aimed to assess the effects of post-activation potentiation in the strength related variables of a kick start. Thirteen competitive swimmers performed three kick starts after a standardized warm up (denoted USUAL) and another after inducing post-activation through five isotonic repetitions on an eccentric flywheel (denoted PAP). A T-test was used to quantify differences between USUAL and PAP warm up. The best trial of each subject achieved by natural conditions (denoted PEAK) was compared with data obtained after PAP. An instrumented starting block with independent triaxial force plates, collected the strength variables related with the impulse at take off. Improvements in the vertical components of force were observed after PAP compared with USUAL, meanwhile no differences were detected on the horizontal components of it. The velocity at take off was higher after PAP compared with USUAL (4.32 ± 0.88 vs 3.93 ± 0.60 m*s-1; p = 0.02). No differences in force or velocity were detected comparing PAP with PEAK (4.13 ± 0.62 m*s-1, p = 0.11). The PAP warm-up increased vertical force and it was transferred to a higher resultant velocity at take-off. This improvement would equal the best result possible obtained in natural conditions after some trials. 相似文献
128.
AbstractThis article provides the foundation and describes the pedagogical and functional design of a PLE within the Just4Me project. This environment integrates tools and functionalities to support learning across and throughout life.The main goal of the pedagogical design is to encourage self-managed learning, regardless of whether it occurs in formal or informal settings. It aims to integrate learning experiences developed within different contexts. 相似文献
129.
Identification and description of controlled clinical trials in Spanish language dental journals 下载免费PDF全文
130.
Casanova Diogo Huet Isabel Garcia Fabiane Pessoa Teresa 《Learning Environments Research》2020,23(3):413-427
Learning Environments Research - The design of learning environments is being increasingly investigated, largely as a result of higher-education providers being challenged by both societal and... 相似文献