Author ranking evaluation at scale

We evaluate author impact indicators and ranking algorithms on two publication databases using large test data sets of well-established researchers. The test data consists of (1) ACM fellowship and (2) various life-time achievement awards. We also evaluate different approaches of dividing credit of papers among co-authors and analyse the impact of self-citations. Furthermore, we evaluate different graph normalisation approaches for when PageRank is computed on author citation graphs.We find that PageRank outperforms citation counts in identifying well-established researchers. This holds true when PageRank is computed on author citation graphs but also when PageRank is computed on paper graphs and paper scores are divided among co-authors. In general, the best results are obtained when co-authors receive an equal share of a paper's score, independent of which impact indicator is used to compute paper scores. The results also show that removing author self-citations improves the results of most ranking metrics. Lastly, we find that it is more important to personalise the PageRank algorithm appropriately on the paper level than deciding whether to include or exclude self-citations. However, on the author level, we find that author graph normalisation is more important than personalisation.     

Structuring Dialogue with Students via Learning Tasks

We discuss a teaching approach that we believe promotes deep learning and diminishes the powerful voice of the teacher, thereby allowing students and the teacher to reason actively and inquire together in the classroom. This teaching approach is based on an integration of the concepts of dialogue and of mediation and utilizes learning tasks to structure dialogue with students during classroom meetings and outside the classroom, when students work independently. Students' experiences of this approach within the two courses reported on in the article were generally positive.     

Is Inequality Among Universities Increasing? Gini Coefficients and the Elusive Rise of Elite Universities

One of the unintended consequences of the New Public Management (NPM) in universities is often feared to be a division between elite institutions focused on research and large institutions with teaching missions. However, institutional isomorphisms provide counter-incentives. For example, university rankings focus on certain output parameters such as publications, but not on others (e.g., patents). In this study, we apply Gini coefficients to university rankings in order to assess whether universities are becoming more unequal, at the level of both the world and individual nations. Our results do not support the thesis that universities are becoming more unequal. If anything, we predominantly find homogenisation, both at the level of the global comparisons and nationally. In a more restricted dataset (using only publications in the natural and life sciences), we find increasing inequality for those countries, which used NPM during the 1990s, but not during the 2000s. Our findings suggest that increased output steering from the policy side leads to a global conformation to performance standards.     

Effects of modified-implement training on fast bowling in cricket

The effects of training with overweight and underweight cricket balls on fast-bowling speed and accuracy were investigated in senior club cricket bowlers randomly assigned to either a traditional (n = 9) or modified-implement training (n = 7) group. Both groups performed bowling training three times a week for 10 weeks. The traditional training group bowled only regulation cricket balls (156 g), whereas the modified-implement training group bowled a combination of overweight (161-181 g), underweight (151-131 g) and regulation cricket balls. A radar gun measured the speed of 18 consecutive deliveries for each bowler before, during and after the training period. Video recordings of the deliveries were also analysed to determine bowling accuracy in terms of first-bounce distance from the stumps. Bowling speed, which was initially 108 +/- 5 km h(-1) (mean +/- standard deviation), increased in the modified-implement training group by 4.0 km x h(-1) and in the traditional training group by 1.3 km x h(-1) (difference, 2.7 km x h(-1); 90% confidence limits, 1.2 to 4.2 km x h(-1)). For a minimum worthwhile change of 5 km x h(-1), the chances that the true effect on bowling speed was practically beneficial/trivial/harmful were 1.0/99/< 0.1%. For bowling accuracy, the chances were 1/48/51%. This modified-implement training programme is not a useful training strategy for club cricketers.     

Complicating ‘student behaviour’: exploring the discursive constitution of ‘learner subjectivities’

When educators consider ‘student behaviour’, they usually think about ‘problem behaviour’ such as disruption or defiance. This limited and limiting view of ‘student behaviour’ not only fails to acknowledge children as educational actors in a wider sense, but also narrowly positions educators as either in control or out of control of their classroom. Mainstream educational psychology’s responses to ‘challenging behaviour’ point educators to numerous ways to prevent its occurrence, through, for example, changing their disciplining approaches and techniques. However, much of the advice directed at improving student behaviour fails to interrogate the core notion of ‘student behaviour’ itself, as well as the conceptual baggage that it carries. The focus is squarely on eliminating ‘problem behaviour’ and often resorts to a pathologisation of students. Meanwhile, when considering ‘student behaviour’ through a Foucauldian post-structuralist optic, behaviour emerges as something highly complex – as spatialised, embodied action within/against governing discourses. In this opening up, it becomes both possible and critical to defamiliarise oneself with the categorisation of ‘challenging behaviour’ and to interrogate the discourses and subject positionings at play. In this paper, we pursue this task by asking: what happens with the notion of ‘behaviour’ if we change focus from ‘fixing problems’ to looking at the discursive constitution of ‘learner subjectivities’? What does it become possible to see, think, feel and do? In this exploration, we theorise ‘behaviour’ as learning and illustrate the constitution of ‘learner subjectivities’. Drawing on two case scenarios, we explore how children accomplish themselves as learners and how this accomplishment links the production of subjectivity and embodied action, and illustrate how ‘student/child behaviour’ appears significantly different to what mainstream educational psychology would have us see.     

Benefits of practicing 4 = 2 + 2: nontraditional problem formats facilitate children's understanding of mathematical equivalence

This study examined whether practice with arithmetic problems presented in a nontraditional problem format improves understanding of mathematical equivalence. Children (M age = 8;0; N = 90) were randomly assigned to practice addition in one of three conditions: (a) traditional, in which problems were presented in the traditional "operations on left side" format (e.g., 9 + 8 = 17); (b) nontraditional, in which problems were presented in a nontraditional format (e.g., 17 = 9 + 8); or (c) no extra practice. Children developed a better understanding of mathematical equivalence after receiving nontraditional practice than after receiving traditional practice or no extra practice. Results suggest that minor differences in early input can yield substantial differences in children's understanding of fundamental concepts.