We introduce mobile positioning based data sources in tourism studies using the case study of tourism in Tartu, Estonia. Mobile positioning data is a promising source for tourism geography as it is one easiest and most cost effective sources for investigating the flows of tourists with relatively good spatial and temporal coverage. Mobile positioning data allows one to link the digital track of...

This paper presents an architecture of an information retrieval system that use the advantages offered by mobile agents to collect information from different sources and bring the result to the calling user. Mobile agent technology will be used for determine the traceability of a product and also for searching information about a specific entity.

New mobile phones and navigation devices are very powerful. In this paper an ethnographic approach is used to gain insight in how one of these devices, a multimedia-phone with GPS, maps and a mobile guide is used by visitors to the city of Philadelphia. An interesting finding is that some of the visitors seem to substitute traditional information sources with the navigation and map-tool on the ...

In CDMA mobile communication systems, voice is encoded and packaged in variable length packets that are transported between the mobile station and the switching center. While the packetization provides a great flexibility in resource allocation, it poses a QOS challenge on voice. In this paper, we discuss link dimensioning for a typical CDMA system. We consider a communication link connecting a...

The paper describes a tele-operated mobile robot system which can perform multiple sound source localization and separation using a 32-channel tri-concentric microphone array. Tele-operated mobile robots require two main capabilities: 1) audio/visual presentation of the robot’s environment to the operator, and 2) autonomy for mobility. This paper focuses on the auditory system of a tele-operate...

In many professional activities (e.g., medical diagnosis, construction, or sales), the ability to retrieve and store knowledge in a mobile situation is crucial. This need, together with the progress of mobile devices, has led to the emergence of mobile knowledge management. The mobile situation imposes specific constraints on traditional knowledge management activities (e.g., knowledge retrieva...

On the road for the future success of mobile agents, we believe that inter-agent communication is an issue that has not been adequately addressed by the mobile agents community. Supplementing mobile agents with the ability to interact with other mobile or static agents, or agentified information sources is a necessity in the vastly heterogeneous arena where mobile agents are called to compete. ...