Generalizations of the Recursion Theorem

We consider two generalizations of the recursion theorem, namely Visser's ADN theorem and Arslanov's completeness criterion, and we prove a joint generalization of these theorems

Minimal Residual Disease and Leukemic Stem Cell Detection in Acute Myeloid Leukemia: New Approaches for Clinical Decision Making

Ossenkoppele, G.J. [Promotor]Schuurhuis, G.J. [Copromotor

Effective Genericity and Differentiability

We prove that a real x is 1-generic if and only if every differentiable computable function has continuous derivative at x. This provides a counterpart to recent results connecting effective notions of randomness with differentiability. We also consider multiply differentiable computable functions and polynomial time computable functions.Comment: Revision: added sections 6-8; minor correction

The Weekend School Effect on Perceived Cognitive and Social Competences: Evidence from a Randomized Controlled Experiment

This study reports the results of a randomized controlled experiment in the Netherlands that was conducted in 2005 to examine if a Weekend School did positively affect perceived competences. For this purpose, 216 Dutch 7thgraders (aged 10/11) were randomly assigned to a Weekend School program and a waiting list. This study focuses on the following competences: scholastic competence, social acceptance, behavioral conduct, global self-worth and outspokenness. These competences are measured before and 10 months after the start of the Weekend School program. Experimental results suggest that the Weekend School program did not affect children's perceived competences.Weekend School, Perceived Competence, Random Assignment

Notes on sum-tests and independence tests

We study statistical sum-tests and independence tests, in particular for computably enumerable semimeasures on a discrete domain. Among other things, we prove that for universal semimeasures every Sigma0/1-sum-test is bounded, but unbounded Pi0/1-sum-tests exist, and we study to what extent the latter can be universal. For universal semimeasures, in the unary case of sum-test we leave open whether universal Pi0/1-sum-tests exist, whereas in the binary case of independence tests we prove that they do not exist