Three-axis platform simulation: Bond graph and Lagrangian approach

A bond graph model is derived for the geometric constraints of a three-axis flight table. Gimbal dynamics are easily added even in asymmetrical and unbalanced cases. A method is introduced to make the local dependent inertias computable. The bond graph compares favourably to the Lagrangian approach as to modelling effort and accessibility of intermediate variables as well as having computational advantages.     

Publication and patent behavior of academic researchers: Conflicting, reinforcing or merely co-existing?

Increasing entrepreneurial activity within academia has raised concerns that the number of publications added to the scientific commons might be reduced or that academic research would be directed exclusively towards the application-oriented needs of industry. In the case of academic inventions, the potential conflict between public- and private-oriented considerations seems most salient. In this contribution, we examine whether the publication behavior of academic inventors (at K.U. Leuven) differs from their colleagues (non-inventors) working within similar fields of research. Our analysis reveals that inventors publish significantly more. Moreover, no empirical evidence was found for the ‘skewing problem’. These findings not only suggest the co-existence of both activities; they may actually reinforce each other.     

Mathematical power of special‐needs pupils: An ICT‐based dynamic assessment format to reveal weak pupils' learning potential1

This paper reports a study aimed at revealing special‐educational‐needs pupils' learning potential by means of an ICT‐based assessment including a dynamic visual tool that might help pupils when solving mathematics problems. The study focused on subtraction problems up to 100, which require ‘borrowing’. These problems, in which the value of the ones‐digit of the subtrahend is larger than the ones‐digit of the minuend, are known as a serious difficulty for weak pupils in mathematics. Seven of such problems from a standardised test were placed in the ICT environment. Data were collected from two test conditions: the standardised written test format and the ICT version of the test items including the tool that provided pupils with a set of virtual manipulatives. The 37 pupils involved in the study were 8–12 years old and from two special‐education schools in the Netherlands. Comparison of the performance scores in the two formats showed that an ICT‐based assessment format, including a dynamic visual tool, can reveal weak pupils' learning potential and strategy use. The study also pointed out that ‘partial‐tool use’, ie, not carrying out the complete subtraction operation with the tool, can provide sufficient support to find the correct answer.     

Tracking and the effects of school‐related attitudes on the language achievement of boys and girls

In this study we examined whether the underachievement of boys in language at the end of secondary education is related to school‐related attitudes. Data were drawn from the LOSO project, a longitudinal research project in secondary education. The results showed that there were gender differences in language achievement in favour of girls in the lower tracks, but not in the highest track. The underachievement of boys was associated with boys’ less positive relationships with teachers, less positive well‐being at school and less positive attitude towards schoolwork. Furthermore, the results showed that—in the lower tracks—boys who were the least attentive in the classroom, the least interested in learning tasks and the least motivated towards learning tasks achieved better than expected. Post‐hoc analyses revealed that these are the more intelligent boys. Possible explanations of the demotivation of the more intelligent boys in the lower tracks are discussed.     

Why are teacher recommendations at the transition from primary to secondary education socially biased? A mixed-methods research

The consequences of educational differentiation have been at the centre of research in sociology of education during the past decades. Processes of educational allocation have, however, received much less attention. Despite the fact that research has shown that teacher recommendations in France and Germany are partly determined by pupils’ social background, studies that inquire into the causes of this social bias seem to be virtually inexistent. This study aims to examine whether teacher recommendations at the transition from primary to secondary education in Flanders (northern, Dutch-speaking part of Belgium) are also socially biased, and if so what causes these differentials in advice, using a mixed-methods design. We found the advice given by primary school teachers to be partly determined by pupils’ social background. Analysis of the qualitative data suggests that teachers tend to evaluate pupils from low socio-economic status backgrounds less positively, due to their emphasis on specific pupil characteristics.