The Asgaard project stresses the issue of time-oriented, skeletal planning, primarily in the medical domain. We try to support therapy planning by adding computer-aided quality assessment, plan validation and other high-level tasks to the field of planning in real-world environment. Key component is a descriptive plan representation language, called Asbru to enable the acquisition of computer readable medical guidelines. The research question of the Ph.D. student thesis is to prove a basic assumption of the project, that the use of Asbru and computer support is helpful in a real-world, time- oriented planning situation. The idea behind is to connect scientific concepts to the intended real-world target environment. A comparison with the usefulness of related modeling techniques, like workflow-process modeling, will be performed.