Het publieke belang van technische wetenschap

Onderzoekers die kritiek willen leveren op de institutionele eisen die doorgaans aan hun werk worden gesteld, nemen meestal een visie op de zin en noodzaak van onderzoek als uitgangspunt. Ze laten zien dat een onderzoeker die ‘goed scoort’ volgens de maatstaven van publieke onderzoeksfinanciers, zoals in Nederland nwo, nog geen goed onderzoekswerk levert. En ze geven redenen om te betwijfelen dat een instituut dat zich een ‘topinstituut’ mag noemen niet per se mensen opleidt die in staat zijn om zelfstandig hoogwaardig en vernieuwend onderzoek te doen

Elastic moduli of model random three-dimensional closed-cell cellular solids

Most cellular solids are random materials, while practically all theoretical results are for periodic models. To be able to generate theoretical results for random models, the finite element method (FEM) was used to study the elastic properties of solids with a closed-cell cellular structure. We have computed the density ($\rho$) and microstructure dependence of the Young's modulus ($E$) and Poisson's ratio (PR) for several different isotropic random models based on Voronoi tessellations and level-cut Gaussian random fields. The effect of partially open cells is also considered. The results, which are best described by a power law $E\propto\rho^n$ ($1 < n <2$), show the influence of randomness and isotropy on the properties of closed-cell cellular materials, and are found to be in good agreement with experimental data.Comment: 13 pages, 13 figure

Informed decision making about predictive DNA tests: arguments for more public visibility of personal deliberations about the good life

Since its advent, predictive DNA testing has been perceived as a technology that may have considerable impact on the quality of people’s life. The decision whether or not to use this technology is up to the individual client. However, to enable well considered decision making both the negative as well as the positive freedom of the individual should be supported. In this paper, we argue that current professional and public discourse on predictive DNA-testing is lacking when it comes to supporting positive freedom, because it is usually framed in terms of risk and risk management. We show how this ‘risk discourse’ steers thinking on the good life in a particular way. We go on to argue that empirical research into the actual deliberation and decision making processes of individuals and families may be used to enrich the environment of personal deliberation in three ways: (1) it points at a richer set of values that deliberators can take into account, (2) it acknowledges the shared nature of genes, and (3) it shows how one might frame decisions in a non-binary way. We argue that the public sharing and discussing of stories about personal deliberations offers valuable input for others who face similar choices: it fosters their positive freedom to shape their view of the good life in relation to DNA-diagnostics. We conclude by offering some suggestions as to how to realize such public sharing of personal stories

Zijn er waarden in de wereld? Ten geleide

Heeft kunst wel of niet een morele taak? Als pubers op de middelbare school dachten wij bij de lessen maatschappijleer na over die vraag. Maar we kwamen meestal niet ver, want we konden al niet bepalen wat kunst is. Is kunst wat in musea staat? Is het wat de kenners kunst noemen? Is kunst mooi? Is kunst uniek? Zet kunst aan tot een andere manier van denken of kijken dan we zijn gewend? Als je niet weet wat kunst is, weet je ook niet op welke manieren moraal met kunst te maken heeft