Aarhus University Seal / Aarhus Universitets segl

Allan Hansen

Context-aware Mobile Hypermedia: Concepts, Framework, and Applications

Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

  • Datalogisk Institut
Context-aware computing focuses on developing systems which through different kinds
of sensory systems are able to collect information about the physical environment in
order to, more or less automatically, adapt data and behavior to the user’s current context.
The aim is to create systems that, rather than solely depend on explicit user input,
can react to changes in the use-context and thereby be easier to use.
Contextualization of information is also inherent to hypermedia. Through links and
other structuring mechanisms hypermedia has striven to support users in accessing and
understanding information in different contexts. Unfortunately, hypermedia has traditionally
been confined to structuring digital material, and the associations which we as
humans are able to maintain between (digital) information and physical entities, have
therefore largely been unsupported. But as computational power moves beyond the
desktop and into the physical environments we live and work in, it may be worthwhile
to support these digital-physical relationships.
The thesis addresses the definition, design and requirements for context-aware mobile
hypermedia systems. Context-aware hypermedia applies ubiquitous computing techniques
to the classical concepts of open hypermedia in order to support linking of both
digital and physical objects and to provide information adapted to the use-context. The
results presented here originate from work performed within two research projects,
ContextIT and the iSchool projects, and focus on support for fieldwork and project
based education in Danish elementary schools and in particular, the process of collecting,
producing and presenting information both in and out of the classroom. The main
contribution of this work is the provision of a better understanding of how to meet the
requirements for context aware mobile hypermedia, both theoretically and practically,
and is realized by:
• A conceptual model for context-aware hypermedia,
• HyCon, a framework for context-aware mobile hypermedia,
• A range of hypermedia applications utilizing context-awareness to support
mobile fieldwork.
The conceptual model divides the concerns of context-aware hypermedia into three
sub-domains: the digital context, the physical context, and the user’s conceptual context
and provides techniques for integrating these three conceptual domains. The model
is experimentally evaluated through the development of a framework for context-aware
hypermedia, HyCon, implementing general abstractions for acquiring context information
and demonstrating how traditional anchor based hypermedia models can be extended
to encompass both digital and physical entities. Several prototype applications
built atop HyCon are also presented and illustrate how context-aware functionality can
by applied to hypermedia in practice.
ForlagDepartment of Computer Science, Aarhus University
Antal sider239
StatusUdgivet - 2006
SerietitelDaimi PhD Dissertation


  • IT i alting

Se relationer på Aarhus Universitet Citationsformater

ID: 3714330