Automated shape annotation for illicit tablet preparations: A contour angle based classification from digital images

In order to facilitate forensic intelligence efforts in managing large collections of physical feature data pertaining to illicit tablets, we have developed an automated shape classification method. This approach performs categorical shape annotation for the domain of illicit tablets. It is invariant to scale, rotation and translation and operates on digital images of seized tablets. The approach employs two processing levels. The first (coarse) level is being based on comparing the contour curvature space of tablet pairs. The second (fine) level is a rule based approach, implemented as a classification tree, that exploits characteristic similarities of shape categories. Annotation is demonstrated over a collection of 169 tablets selected for their diverse shapes with an accuracy of 97.6% when 19 shape categories are defined.     

Voluntary and therapeutic castration of sex offenders in The Netherlands (1938–1968)

Between 1938 and 1968 some 400 sex offenders in the Netherlands who by court orders had been put at ‘the discretion of the government’ and were incarcerated in asylums for the criminally insane, ‘voluntarily’ submitted themselves to ‘therapeutic’ castration, the surgical removal of their testes. Prior to 1938, inspired by a Danish castration act from 1929, and urged by asylums that were overcrowded by sex offenders, the ethics of the surgery had been discussed for nearly a decade amongst theologians, (forensic) psychiatrists, jurists and politicians, mostly in the context of eugenic sterilization. Discussions of conflicting Catholic, Protestant and non-denominational points of view vis-à-vis eugenics resulted in consensus about ‘therapeutic’ and ‘voluntary’ castration. Sexual deviancy, according to some, was like a tumor located in the testes, which could therefore be removed without moral objections and the person was thus cured of his disease. Although obviously related to forensic psychiatry and concerned with issues like protection of society and treatment of offenders, discussions were never held in a strictly forensic context. Unlike in other countries in which castration policies were enforced, in The Netherlands the surgery was never embodied in law but subject to an informal protocol that covered political accountability. To satisfy Catholic objections references to eugenic aims were omitted from the documents, as were references to castration as a penalty.     

Exclusivity of citizens’ initiatives: Fuel for collective action?

ABSTRACT

Self-organized citizens’ initiatives are a form of collective action and contribute to society through the production of public goods and services. Traditional collective action theory predicts that such initiatives are near impossible because of the persistent problems of free-riding. Citizens’ initiatives however do exist and function properly, and their numbers seem to be increasing in countries such as the Netherlands. This article argues that free-riding problems can be overcome when some form of exclusivity is arranged in citizens’ initiatives. We assume that citizens’ initiatives use active and/or passive strategies to limit free-riding behaviour. Using three illustrative cases, our research shows that position rules, boundary rules, and authority rules are used in a subtle and often implicit way to differentiate the level of influence and authority between the more and the less committed members, enabling collective action. Such rules, though advantageous, may be paradoxical to the goals of the citizens’ initiatives and can undermine the virtues associated with them.