Context awareness is increasingly gaining applicability in interactive ubiquitous mobile computing systems. Each context-aware application has its own set of behaviors to react to context modifications. This paper is concerned with the context modeling and the development methodology for context-aware systems. We proposed a rule-based approach and use the adaption tree to model the adaption rul...

Infrastructures are persistent socio-technical systems used to deliver different kinds of services. Researchers have looked into how awareness of infrastructures in the areas of sustainability [6, 10] and software appropriation [11] can be provided. However, designing infrastructure-aware systems has specific requirements, which are often ignored. In this paper we explore the challenges when de...

Nowadays, context-aware systems are developed by gathering context data and adapting systems behavior accordingly. The purpose of this paper is to examine four architectural pattern context-aware systems in terms of the ability to be implemented. The pattern which can overcome the complexity of these systems and can be more extensible is better to be implemented. This paper is based on a review...

Many of the most complex service systems being built and imagined today combine person-to-person encounters, technology-enhanced encounters, self-service, computational services, multi-channel, multi-device, and location-based and context-aware services. This paper examines the characteristic concerns and methods for these seven different design contexts to propose a unifying view that spans th...

In this paper we present a mix-type remote electronic voting system belonging to the “proof of product with redundancy” paradigm. Votes are composed using a redundancy system that permits to prove the correct composition and plaintext awareness of votes at vote reception and check the validity of the mixing operation while preventing some privacy or denial of service attacks that were possible ...

We present a semantically-driven approach to uncertainties within and across ontologies. Ontologies are widely used not only by the Semantic Web but also by artificial systems in general. They represent and structure a domain with respect to its semantics. Uncertainties, however, have been rarely taken into account in ontological representation, even though they are inevitable when applying ont...

To satisfy service customers and create unique value in a digitized world, companies must strive for exceeding customers’ expectations of e-service experience by establishing high e-service quality. However, an increasing amount of e-services is performed by context-aware mobile technology, which is able to sense and react to changes in the user’s environment. Although these context-aware servi...

Current context-aware services make the assumption that the context they are dealing with is correct. However, in reality, both sensed and interpreted context is often imperfect. In this paper, we describe an architecture that supports the building of context-aware services that assume context is imperfect and allows for the refinement of this imperfect context by mobile users in aware-environm...

Privacy is one of the areas of security with tradeoffs in ubiquitous computing and tends to a difficult, yet necessary, design issue in such dynamic environments. Context and social nuances contribute to creating privacy for the user, making it a meta-property. Developers currently incorporate little support in designing frameworks that help endusers manage their privacy in an undaunted way. In...

The paper presents a logical framework for the modelling of context aware systems. The framework consists of three first order languages that together make it possible to represent all aspects of such systems and which thus provide a transparent modelling framework. The framework is constructed for the use in semantic modelling of context aware systems and models can for most parts easily be im...