Globalised vs averaged: Bias and ranking performance on the author level

We analyse the difference between the averaged (average of ratios) and globalised (ratio of averages) author-level aggregation approaches based on various paper-level metrics. We evaluate the aggregation variants in terms of (1) their field bias on the author-level and (2) their ranking performance based on test data that comprises researchers that have received fellowship status or won prestigious awards for their long-lasting and high-impact research contributions to their fields. We consider various direct and indirect paper-level metrics with different normalisation approaches (mean-based, percentile-based, co-citation-based) and focus on the bias and performance differences between the two aggregation variants of each metric. We execute all experiments on two publication databases which use different field categorisation schemes. The first uses author-chosen concept categories and covers the computer science literature. The second covers all disciplines and categorises papers by keywords based on their contents. In terms of bias, we find relatively little difference between the averaged and globalised variants. For mean-normalised citation counts we find no significant difference between the two approaches. However, the percentile-based metric shows less bias with the globalised approach, except for citation windows smaller than four years. On the multi-disciplinary database, PageRank has the overall least bias but shows no significant difference between the two aggregation variants. The averaged variants of most metrics have less bias for small citation windows. For larger citation windows the differences are smaller and are mostly insignificant.In terms of ranking the well-established researchers who have received accolades for their high-impact contributions, we find that the globalised variant of the percentile-based metric performs better. Again we find no significant differences between the globalised and averaged variants based on citation counts and PageRank scores.     

From Obstacle to Growth Dewey's Legacy of Experience‐Based Art Education

In the last decades theories that emphasise visitors’experience as the key element in the process of meaning‐making have influenced art education in museums considerably. However, there is remarkably little evidence in practice that museums shape their exhibits and educational tools by the actual experiences of visitors. Because museum education is still too much knowledge‐based, people often do not come to understanding or engagement of thinking. This article demonstrates this inconsistency and its consequences based on visitors’conversations during a museum visit while looking at contemporary art. In order to engage visitors into their own thinking and create lasting experiences, the article also investigates Dewey's ideas about experienced‐based education and inquiry learning. The study especially shows that experiences felt as obstacles for interpretation are extremely suitable to stimulate, deepen and improve visitors’engagement in the inquiry cycle.     

School and teacher factors associated with frequency of ICT use by mathematics teachers: Country comparisons

This paper explores school and teacher factors that are associated with the frequency of use of ICT by mathematics teachers. The SITES 2006 data base was used to compare countries with a relative high percentage of frequently ICT-using mathematics teachers (HIMA countries) with countries with a relative low percentage of frequently ICT-using mathematics teachers (LOMA countries). Meaningful effect sizes (≤?0.5 or ≥0.5) for 29% of the items in the SITES 2006 database were found. The findings suggest that mathematics teachers in HIMA countries, more than in LOMA countries apply a learner-centered approach in their educational practice and have a focus on life long learning competencies. In addition, compared to LOMA countries, school leaders in HIMA countries, are active in stimulating the use of ICT and encouraging teachers to apply new ways of teaching and learning. The school level items of the SITES 2006 database with meaningful effect size were factor-analyzed resulting in five factors: 1. active communication, 2. school leadership development, 3. assessment orientation, 4. ICT use by school leaders and 5. Bottom–up change orientation. Country profile scores for HIMA and LOMA countries and for culturally comparable countries were generated to illustrate how these country profiles can be used to inform ICT policy.     

Denominational School Identity and the Formation of Personal Identity

Three important factors determine the institutional identity of denominational (Christian) schools: their interpretation of the religious truth claim, their conception of the nature of education, and their view of cultural differences as content of education. We investigate conceptually which of these interpretations of identity are consonant with a view of education as a place where the personal identity of students is constructed. We interpret personal identity in a narrative way, as a permanent process of reflexive construction where consistency over time is not seen as an ideal, given the plurality of postmodern culture.     

Schools and Moral Education: Conformism or Autonomy?

In pluralistic Western societies, schools have a specific task in moral education. This task is to be understood neither as the transmission of specific values, nor as the development of moral reasoning skills or universal values, but as teaching pupils to handle plurality in an autonomous way. The concept of autonomy is interpreted from a Vygotskian and Deweyan position, where learning in school means learning to participate in cultural activities in a reflective and critical way. Participation has both intellectual and moral aspects, and thus moral education can never be separated from cognitive education.     

Instructions for authors

Instructions for Authors

Instructions for authors     

Personalization in the public sector: An inventory of organizational and user obstacles towards personalization of electronic services in the public sector

The public sector more and more deploys personalized e-government services. Personalization offers great opportunities to make communication more effective and efficient, to infer and predict citizens' behavior and to even influence behavior. However, some drawbacks must be considered. Important organizational barriers hinder the implementation of personalized e-government services and important user obstacles, such as access, trust, control, and privacy, have to be overcome to make fruitful use of those personalized e-government services.     

Knowledge sharing in inter-unit cooperative episodes: The impact of organizational structure dimensions

We study how classic organizational structure dimensions should be altered to be more adapted to organizational knowledge sharing. In particular, we look at the dimensions: coordination, centralization, formalization, and specialization, in their relationship to the concept of knowledge sharing. Empirical data was collected by means of a questionnaire in two companies. Our findings indicated that expected relationships, such as the negative effect of centralization or the positive effect of lower formalization, were not found. Interdependency and knowledge complexity, caused by specialization, had an important interacting effect on the relationship between coordination and knowledge sharing. A comparison between the two companies revealed that the organization-specific context in which the coordination is applied influences the potential of this coordination for knowledge sharing.     

Investigation of angiogenesis genes with anterior cruciate ligament rupture risk in a South African population

The angiogenesis-signalling pathway is a physiological response after mechanical loading to promote matrix remodelling and thereby maintain tissue homeostasis. Studies have shown increased expression of angiogenic molecules in response to loading and in ruptured ligaments. Recently, polymorphisms within the vascular endothelial growth factor A (VEGFA) and kinase insert-domain receptor (KDR) genes were associated with risk of anterior cruciate ligament (ACL) ruptures and Achilles tendinopathy in Caucasian study groups. A case-control genetic association study was conducted on 100 controls and 98 participants with surgically-diagnosed ACL ruptures; of which 51 participants reported non-contact mechanism of injury (NON). All participants were genotyped for five functional polymorphisms: VEGFA (rs699947, rs1570360, rs2010963) and KDR (rs2071559, rs1870377). Haplotypes were inferred. In the male participants, the KDR rs2071559 AG genotype was significantly over-represented (P = 0.048, OR: 1.90, 95% CI: 1.00–3.59) in the controls. Furthermore, the GG genotype was significantly under-represented in the male controls compared to the male ACL group (P = 0.018, OR: 2.77, 95% CI: 1.17–6.55) and the male NON subgroup (P = 0.013, OR: 3.26, 95% CI: 1.24–8.58). Haplotype analysis implicated the KDR gene in all participants and in male participants separately. Collectively, these results implicate the angiogenesis-signalling pathway as a potentially key biological pathway contributing to ACL injury susceptibility.