State agencies responsible for managing various risks in social life issue advisories to the public to prevent and mitigate various hazards. In this chapter we will investigate, how information about a common food born health hazard, known as Campylobacter, spreads once it was delivered to a random sample of individuals in France. The Campylobacter is most commonly found in chicken meat and cau...

There has been a surge of interest in the delivery of personalized information to users (e.g. personalized stocks or travel information), particularly as mobile users with limited terminal device capabilities increasingly desire updated, targeted information in real time. When the number of information recipients is large and there is sufficient commonality in their interests, as is often the c...

Vehicular networks aimed toward providing roadside services such as traffic alerts, estimated time to reach a destination, alternative routes, and in general improve the efficiency and safety on the road are emerging in both the United States and Europe. Information exchange in such networks occurs between vehicles (inter-vehicle communications) in an ad hoc manner and also with roadside base s...

Abstract—In the architectural design of a communication technology the assignment of responsibilities to its different modules or layers is a key issue. The modularization and assignment of functions to modules has a strong impact on the system performance. In this paper, we address data forwarding as a key responsibility of a VANET’s (Vehicular Ad hoc NETwork) communication device. More specif...

A Vehicular Ad-Hoc Network (VANET) is a network where vehicles can disseminate information such as traffic conditions, availability of free parking lots or content. In order to fulfill VANET application requirements (Time To Live (TTL), information distance spread), we need to use the available network resources (e.g., radio capacity) optimally depending on the traffic conditions. While cellula...

Information-rich maps are today rendered from powerful back-end servers. For instance, Google maps or Bing maps are web services that are resident on compute capable and energy hungry server class machines. Unfortunately, access to such Internet-resident web services is infeasible in disconnected environments such as a natural disaster. However, it is important to be able to disseminate map bas...

We study the problem of efficient dissemination of textual information over wide-area networks. Our dissemination architecture utilises middle-agents and sophisticated matching algorithms. The data model and query language is based on the well-known Boolean model from Information Retrieval. The main focus of this paper is the problem of matching incoming documents with submitted user profiles. ...

The quantity of information in the web is huge and rapidly increasing. People that want to use this information have to cope with the problem of information overload. As a result, information querying and retrieval relies on search engines and other specialized systems designed for this task. However, the user still has to spend much time in order to seek for the information he (or she) is inte...

Information dissemination is slowly moving from printed media to electronic media. However this step cannot be completed if the electronic commercialization of information does not provide the same guarantees against copyright infringement as with the printed media. In this paper we present the major requirement for the commercialization of electronic information and describe Hep, an agent base...

Besides securing transmission of digital information at lower layers, several application-level security solutions for controlled dissemination of digital information have been developed using cryptographic, watermarking or use-control technologies. These dissemination control solutions have been designed for different business purposes. Little research, if any, identifies security architecture...