The invention relates to a multi-layer body comprising a first layer having a multiplicity of first zones, which are respectively separated from one another by one or a plurality of transparent second zones. The roll unit and the rails can be displaced in relation to each other in the longitudinal direction of the rails. There is a center pivot alignment shaft frame clamp on one end of the center pivot alignment shaft, comprised of a hemispherical torus connected to a free frame clamp also in a hemispherical torus shape. The offset is set to increase in the distant view area and decrease in the close view area. A first characteristic, calculated in respect of a first time period, and a second characteristic, calculated in respect of a second time period, are used to extrapolate a measured characteristic, measured over the first time period, to determine a determined characteristic for the second time period. A system is providing that includes a data selection system that clusters gene expression data into a set of clusters and identifies a representative subset of genes from the set of clusters; and a relational fuzzy modeling system that builds a relational fuzzy model using the representative subset.