There is an acknowledged growing need for efficient and sustainable systems that use available energy resources in an “optimal” (including constraints) way. Such a goal cannot be effectively achieved without taking into account the limits posed by the second law of thermodynamics. A possible...

Stepped wedge randomised trials are increasingly popular. Here we derive the optimal design for a fixed number of periods; this does not allocate an equal number of cluster units to each treatment sequence as might otherwise have been expected.

This article studies the semifoldover designs when initial designs are blocked regular designs. The properties and the structures of semifoldover blocked designs are investigated. Optimal blocking and semifoldover plans are tabulated for 16 and 32 run designs.

Individuals in most industrialized countries have to make investment decisions throughout their adult life span to save for their retirement. These decisions substantially affect their living standards in old age. Research on cognitive aging has already demonstrated several changes in cognitive...

Rede, in verkorte vorm uitgesproken bij de aanvaarding van het ambt van hoogleraar Methodologie van Research in Marketing aan de Faculteit der Bedrijfskunde van de Erasmus Universiteit Rotterdam op vrijdag 25 oktober 2002