Thomas Ludwig reveals design characteristics when aiming at researching information
infrastructures and their diverse information resources types of users and systems as well as
divergent practices. By conducting empirically-based design case studies in the domain of
crisis management the author uncovers methodological and design challenges in understanding
new kinds of interconnected information infrastructures from a praxeological perspective. Based
on implemented novel ICT tools he derives design characteristics that focus on integrating
objective and subjective queried insights into situated activities of people as well as
emphasizing the subjective nature of information quality.
