Experimental and numerical prediction of railway induced vibration

In this paper, both measurements and numerical simulations of railway induced vibration are discussed. A measurement campaign has been carried out along the high-speed railway track in Lincent, Belgium. The experimental determination of transfer functions and vibration velocity during train passages are discussed. A numerical model is introduced to predict the transfer functions and the vibration velocity during train passages. The comparison of experimental and numerical results demonstrates the importance of accurate numerical models and input data. The results are obtained in the framework of the development of a hybrid prediction method, where numerical and experimental data can be combined to improve the prediction accuracy for railway induced vibration.     

Mine the process: investigating the cyclical nature of upper primary school students’ self-regulated learning

The present study investigates primary school students’ self-regulated learning (SRL) process by exploring the sequence in which SRL activities are conducted during learning. The aims of this study are twofold: investigating the presence of the theoretically hypothesized cyclical nature in students’ SRL process, as well as potential differences herein for high, average, and low achievers. Think-aloud data of 104 upper primary school students were analysed by means of process mining analysis. The results indicate that students commonly adopt a cyclical approach to learning by implementing preparatory, performance, and appraisal activities during learning. However, the results indicate clear differences in the quality of students’ SRL process. High achievers, compared to low and average achievers, show a more strategic and adaptive approach to learning during all phases of their learning process. They more strategically and effectively orient on and plan assignments, combine different cognitive strategies, and adopt self-evaluation to regulate their learning process.

     

Memorisation methods in science education: tactics to improve the teaching and learning practice

How can science teachers support students in developing an appropriate declarative knowledge base for solving problems? This article focuses on the question whether the development of students’ memory of scientific propositions is better served by writing propositions down on paper or by making drawings of propositions either by silent or muttering rehearsal. By means of a memorisation experiment with eighth- and ninth-grade students, we answer this question. In this experiment, students received instruction to memorise nine science propositions and to reproduce them afterwards. To support memorisation students were randomly assigned either to a group that received instruction to write each proposition on paper or to a group that received instruction to make a drawing about the content of the proposition. In addition, half of the students in both groups received instruction to mutter and the other half of them received instruction to write or draw in silence. The main conclusion from the experiment is that after four weeks students who had made a drawing remembered significantly more propositions than those who had memorised the propositions by writing them down. Our research further revealed that it did not matter whether students muttered or memorised silently.     

Scaffolding dynamics and the emergence of problematic learning trajectories

This study aims at examining problematic learning trajectories of students with emotional behavioral disorders (EBD) by means of a longitudinal and time serial (micro genetic) study of individual instruction sessions during arithmetic lessons. Micro genetic analysis techniques were applied on the variable “responsiveness” in the scaffolding dynamics, which was chosen as an indicator variable for the quality of the instruction. In a representative EBD student–teacher pair, an iterative process of stability and change of five dynamically related scaffolding variables and one arithmetic variable was demonstrated, which indicated the existence of three phases over a period of two school years. In the short term dynamics of scaffolding, an asymmetric engagement level of teacher and student was found, which was dominated by the teacher's initiatives. Overall, the data point to a suboptimal coupling in this student–teacher pair. An applied conclusion of our study is that educational recommendations should be aimed at transforming existing, self-sustaining transactional patterns between the teacher and the student in real-time instruction sessions during arithmetic lessons.