User profiles in the information retrieval field are explored in terms of access to relevant information in documents of various kinds (scientific, geographic, etc). Then the methodology to define the user model is described. Several examples are used to illustrate points.

Purpose – A grid information retrieval model has benefits for sharing resources and processing mass information, but cannot handle conceptual heterogeneity without integration of semantic information. The purpose of this research is to propose a concept‐based retrieval mechanism to catch the...

Distributed systems usually contain objects with heterogeneous security requirements that pose important challenges for the underlying security mechanisms and especially in access control systems. Access control in distributed systems often relies on centralised security administration. Existing...

New and advanced technologies enable firms to collect, use, disseminate, disclose, and sell Internet users’ personal information. This has raised privacy concerns. Self‐regulation is preferred by governments and industry. Unfortunately, the Internet is not well suited for a successful...

The information revolution, coupled with the strategic leveraging of the Internet, has exposed a number of relatively open societies to the dangers of cybercriminal and cyberterrorist acts, especially in commercial business transactions. With the development of e‐commerce, this commercial dark...

An e‐mail virus is an e‐mail that can infect other programs by modifying them to include a replication of itself. When the infected e‐mails are opened, the e‐mail virus spreads itself to others. Today's society has seen a dramatic increase in the use of e‐mails. As a result,...

Purpose – To provide practitioners of information management with an overview and framework to explore the various controversies associated with the methods of traditional methods of voting with electronically enhanced voting via the internet (I‐voting). The current paper is centered on the...