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.