While collaboration is a natural choice in many situations, there is a lack of specialized tools for collaboratively seeking information. We present design specifications and impl...
Abstract. Information systems are socio-technical systems. Their design, analysis and implementation requires appropriate languages for representing social and technical concepts. ...
Electronic Transactions over the Internet, particularly using the World Wide Web have become an integral part of economic life. Recently also the public sector has started to use ...
Role-based approaches are emerging technologies in information system design and implementation. Roles have been acknowledged and applied in many fields for many years. Considerin...
Grid applications need efficient access to information about available resources and services. Typically, this access is provided by information services that are often organized ...