Die zentrale Zielsetzung der Arbeit war es, auf der Basis von Technologien aus dem Bereich
des semantischen Web neuartige Methoden der Benutzermodellierung zu entwickeln, durch …

We revisit the top-level ontology Gumo for the uniform management of user and context
models in a semantic web environment. We discuss design decisions, while putting the …

In less than three decades, computers have evolved from bulky desktop units to tiny,
embedded chips that can communicate wirelessly with each other. Battery-powered and …

Nowadays, communication engineering technology is merging with the Internet of Things
(IoT), which consists of numerous connected devices (referred to as things) around the …

This paper presents an overview about ongoing work in the project REAL, where we have
set up the Saarland University Pervasive Instrumented Environment (SUPIE). In particular …

Since GPS receivers have become a commodity anyone could access and use location
information simply and freely. Such an easy access to ones' location is instrumental to …

This dissertation presents a design method for proactive user assistance systems in
instrumented environments. The method addresses typical design issues, such as the …

Due to the appearance and widespread diffusion of new mobile devices (PDAs,
smartphones etc.), the traditional notion of computing is quickly fading away, giving birth to …

Factory and industrial automation systems gradually start to incorporate wireless networks of
smart objects and sensor nodes. In this context, one fundamental problem is the reliability of …

Location-based mobile learning (LBML) involves learning in and about locations in order to
explore, analyze, describe, and evaluate phenomena in authentic learning experiences and …