With todays wide acceptance of distributed computing, a rapidly growing number of application domains are emerging, leading to a growing number of ad-hoc solutions, rigid and poorly interoperable. Our response to this challenge is a platform for building flexible and interoperable execution environments (including language and system aspects) called the Virtual Virtual Machine. This paper prese...

Constraint Propagation can be speeded up significantly by choosing a good execution order for propagators. A propagator is an implicit representation of a constraint which is widely used in todays powerful constraint solvers. In this paper we evaluate different ways to find good execution orders automatically during runtime. We extend previous work in this area by two new techniques: fair-sched...

As mobility permeates into todays computing and communication arena, we envision application infrastructures that will increasingly rely on mobile technologies. Traditional database applications and information service applications will need to integrate mobile entities: people and computers. In this paper, we develop a distributed database framework for mobile environments. A key requirement i...

Malicious web sites perform drive-by download attacks to infect their visitors with malware. Current protection approaches rely on blackor whitelisting techniques that are difficult to keep up-to-date. As todays drive-by attacks already employ encryption to evade network level detection we propose a series of techniques that can be implemented in web browsers to protect the user from such threa...

One of the most important areas of a network intrusion detection system (NIDS), stateful inspection, is described in this paper. We present a novel reconfigurable hardware architecture implementing TCP stateful inspection used in NIDS. This is to achieve a more efficient and faster network intrusion detection system as todays’ NIDSs show inefficiency and even fail to perform while encountering ...

Ambient Assisted Living (AAL) systems are a relatively new and expanding area of research. Due to current demographic trends towards gentrification of the population AAL systems are bound to become more important in todays and near future’s societies. Fall detection is an important component of AAL systems which could provide better safety and higher independency of the elderly. This paper pres...

Recently, approaches that combine contexts and ontologies taking advantages of their strengths have been developed. Each of them solves different problems from different perspectives. The objective of this paper is to present problems that are not solved up to date as well as to introduce a conceptual proposal. To this aim, we base our analysis on a collaborative B2B scenario that is relevant f...

Low educational qualification, i.e. reaching no or only a very basic degree, substantially decreases an individual’s prospects on todays labour market. Emotional stability and conscientiousness are known to be predictive of achievement. Nevertheless, the moderating role these two personality traits outcome low interaction with gender far less explored. In this paper, we use rich data from Briti...