Modeling of National-Regional Health Care Systems: Comments and Proposals for IIASA Biomedical Project

The basic idea behind this model is that it should establish a set of interconnected elements which are essentially invariant in their basic principles, as between different regional and national health care systems. Bearing in mind the models which have been and are already being developed, it is clear that there is a considerable diversity of approaches and of objectives in the particular models. In consequence, I feel that the following subsystems will have to be included as "autonomous" elements or sub-models, although all of them may not necessarily be included in every national model. Nevertheless, it seems to me important to identify the functions of each of these sub-models whenever it is appropriate

On the limits of quantum theory: contextuality and the quantum-classical cut

This paper is based on four assumptions: 1. Physical reality is made of linearly behaving components combined in non-linear ways. 2. Higher level behaviour emerges from this lower level structure. 3. The way the lower level elements behaves depends on the context in which they are imbedded. 4. Quantum theory applies to the lower level entities. An implication is that higher level effective laws, based in the outcomes of non-linear combinations of lower level linear interactions, will generically not be unitary; hence the applicability of quantum theory at higher levels is strictly limited. This leads to the view that both state vector preparation and the quantum measurement process are crucially based in top-down causal effects, and helps provide criteria for the Heisenberg cut that challenge some views on Schroedinger's cat.Comment: 65 pages, 10 diagrams. Revised in response to referee comments; to appear in Annals of Physic

Le Palmier à huile africain à Sumatra

Milsum J.-N. Le Palmier à huile africain à Sumatra. In: Revue de botanique appliquée et d'agriculture coloniale, 2ᵉ année, bulletin n°7, 31 mars 1922. pp. 92-98