On-line Social Networks (OSN) have become one of the most used Internet services. However, as happens with every new technology, they are prone to several security issues. Despite privacy concerns begin to emerge, there are still other dangerous vulnerabilities that affect security and threaten organisations and users assets. In this paper, we present the first Threat Modelling approach in Onli...

Simulation models are of increasing importance within the field of applied epidemiology. However, very little can be done to validate such models or to tailor their use to incorporate important human behaviours. In a recent incident in the virtual world of online gaming, the accidental inclusion of a disease-like phenomenon provided an excellent example of the potential of such systems to allev...

This paper describes an approach to the design of online help for programming tasks and modelling tasks, based on a theoretical framework of problem solving and learning. The framework leads to several design principles which are important to the problem of when and how to supply help information to a learner who is constructing a solution to a given problem. We will describe two example domain...

Recently, process modelling and process reorganisation have been recognised as being of utmost importance for making e-government implementations success. Due to the high complexity of governmental processes and organisational structures, appropriate modelling methodologies and tools are, however, not really available yet. In our contribution, we describe the needs for a comprehensive Business ...

This article provides an overview of the knowledge management challenges for practitioners and examines the extent to which existing information systems and operational research modelling approaches cater for the practice of knowledge management. It concludes that the current focus of modelling approaches on problem solving needs to be extended in order to deal with the human and social aspects...

Online analytical processing (OLAP) as a modern business intelligence (BI) concept provides support for representing vast amounts of data for supporting management’s decisions. Though, there is no inherent support for the representation of causal structures which could provide a foundation for advanced analysis like what-if or scenario techniques. System Dynamics (SD) is an approach with a long...

This paper presents a design assistance framework for online design process monitoring and design space exploration in concurrent integrated environments. The approach is based on an extension of Predicate Transition Nets as a modelling paradigm. This modelling paradigm provides a formal semantics for the concurrent behaviour of design processes. The presented approach allows the exploration of...

this paper tries to study the complex relationship between religion, popular culture and the internet. the internet not only prepares some facilities for religion, but also it’s a site for a new interaction between religion and popular culture. first, the paper points out five features of the internet which help to extend and promote the religious communication in the cyberspace: 1. deterritori...

BACKGROUND The objective of the review was to evaluate the extent, quality and value of computer simulation modelling in population health and health care delivery. METHODS A narrative systematic review was carried out of world literature from 1980 to 1999, searching Medline, INSPEC, Embase, HealthSTAR, Science Citation Index, CINAHL, MathSci, INFORMS Online and SIGLE databases, and researche...