The application of Shlaer-Mellor object-oriented analysis and recursive design to phenix online computing systems

The Shlaer-Mellor method is being used in the development of the online computing system for the PHENIX detector at RHIC. Many of the methods's features are very appropriate for computing applications for large high energy and nuclear physics experiments. In particular, the partitioning of a system into relatively independent domains permits dividing responsibilities among subgroups and individuals across various areas of interest and expertise. Examples of Shaer-Mellor models developed for the PHENIX systems, organization and planing in the Shaer-Mellor environment, possible implementation architecture, our experiences with the method and supporting tools, and future plans are presented. (author)