Breeding for nobility or for production? Cultures of dairy cattle breeding in the Netherlands, 1945-1995

In the 1970s and 1980s Dutch farmers replaced their dual-purpose Friesian cows with Holsteins, a highly specialized American dairy breed. The changeover was related to a major turnabout in breeding practices that involved the adoption of quantitative genetics. Dutch commercial breeders had long resisted the quantitative approach to breeding that scientists had been recommending since World War II. After about 1970, however, they gave up their resistance: the art of breeding, it was said, finally became a science. In historical overviews this turnabout is seen as part of what is called the "modernization project" in Dutch agriculture that the government instigated after the war. Economic developments are assumed to have necessitated this project, and specialization of production is seen as a natural consequence. This essay argues that the idea that the art of breeding was turned into a science is to a certain extent misleading. Furthermore, it aims to show that economic pressures and government policies cannot adequately explain the turn toward Holsteins. A better understanding can be obtained by framing the Holsteinization process as the result of a changeover in breeding culture--that is, in the ensemble of shared convictions, beliefs, conventions, methods, practices, and the like that characterized practical cattle breeding and that involved scientific, technical, economic, aesthetic, normative, and commercial considerations.     

Narthical religious learning: redefining religious education in terms of pilgrimage

Religious education at school should be more than just the acquisition of knowledge. It should not only provide cognitive facts on how religious people act according to their moral and religious convictions, but also on how learners can gain as much profit as possible from these facts in order to build their own identity as religious ‘tourists’. Good religious education challenges them also to become ‘pilgrims’ and to allow the ‘slow questions’ of religion to enter into their own life, in all their vulnerability and provisionality. This paper discusses the recent orientation towards religious experience in religious didactics in Western Europe and makes out a case for a mystagogical‐communicative or ‘narthical’ approach to religious learning. This argument is presented against the background of individualisation, pluralisation and detraditionalisation of religion, which is the typical context for young people in their search for meaning today.     

Teacher behaviour and student outcomes: Suggestions for research on teacher training and professional development

The study reported here examines whether teaching skills included in the dynamic model of educational effectiveness can be grouped into types of teacher behaviour and whether these types are related with different student outcome measures. The data stem from a study which was conducted in order to test the validity of the dynamic model. Results reveal that teaching skills can be grouped into five types of teacher behaviour which are discerned in a distinctive way and move gradually from skills associated with direct teaching to more advanced skills concerned with new teaching approaches and differentiation of teaching. Teachers exercising more advanced types of behaviour have better student outcomes. Suggestions for research on teacher education and professional development are drawn.     

Improving CFD prediction of drag on Paralympic tandem athletes: influence of grid resolution and turbulence model

Tandem cycling enables visually impaired athletes to compete in cycling in the Paralympics. Tandem aerodynamics can be analysed by track measurements, wind-tunnel experiments and numerical simulations with computational fluid dynamics (CFD). However, the proximity of the pilot (front) and the stoker (rear) and the associated strong aerodynamic interactions between both athletes present substantial challenges for CFD simulations, the results of which can be very sensitive to computational parameters such as grid topology and turbulence model. To the best of our knowledge, this paper presents the first CFD and wind-tunnel investigation on tandem cycling aerodynamics. The study analyses the influence of the CFD grid topology and the turbulence model on the aerodynamic forces on pilot and stoker and compares the results with wind-tunnel measurements. It is shown that certain combinations of grid topology and turbulence model give trends that are opposite to those shown by other combinations. Indeed, some combinations provide counter-intuitive drag outcomes with the stoker experiencing a drag force up to 28% greater than the pilot. Furthermore, the application of a blockage correction for two athlete bodies in close proximity is investigated. Based on a large number of CFD simulations and validation with wind-tunnel measurements, this paper provides guidelines for the accurate CFD simulation of tandem aerodynamics.     

Les Effets de Coopération et de Feedback par les Compagnons de Classe sur la Performance Orthographique

European Journal of Psychology of Education -     

Using the dynamic approach to school improvement to promote quality and equity in education: a European study

Educational Assessment, Evaluation and Accountability - This paper presents the results of a European study investigating the extent to which the Dynamic Approach to School Improvement (DASI) can...