Illustrates a two‐level hierarchical system structure for solving the production planning problems of a steel manufacturing system. The structure is basically a goal‐diffusion mechanism between two levels. At the lower level a goal programming problem is solved and at the higher level a...

Examines the processes of cluster analysis and describes them using an example of benefit segmentation, and also discusses other applications suggesting new directions of research in related fields. Bases an example study with 200 early respondents to a survey into sixth formers' choice of...