  Direct representation knowledgebases can enhance and even provide an
alternative to document-centered digital libraries. Here we consider realist
semantic modeling of everyday activities and infrastructures in such
knowledgebases. Because we want to integrate a wide variety of topics, a
collection of ontologies (a foundry) and a range of other knowledge resources
are needed. We first consider modeling the routine procedures that support
human activities and technologies. Next, we examine the interactions of
technologies with aspects of social organization. Then, we consider approaches
and issues for developing and validating explanations of the relationships
among various entities.
