Smart card Web server provides a modern interface between smart cards and the external world. It is of paramount importance that this new software component does not jeopardize the security of the smart card. This paper presents a formal model of the smart card Web server specification and the proof of its security properties. The formalization enables a thoughtful analysis of the specification...

Human teamwork can be supported by agent technology by providing each human team member with an agent that monitors, supports and advices the human. The agent can, for example, monitor the human’s workload, and share that information with (agents of) other team members so that work can be distributed effectively. However, though sharing information can lead to a higher team performance, it may ...

Interaction systems are a formal model for component-based systems. Combining components via connectors to form more complex systems may give rise to deadlock situations. Deciding the existence of deadlocks is NP-hard as it involves global state analysis. We present here a parametrized polynomial-time algorithm that is able to confirm deadlock-freedom for a certain class of interaction systems....

The large-granularity software component is the basis for structuring complex enterprise software system. However, current components are small, and their coupling is close. Furthermore, a software entity is broken up and distributed in tiers, and different entity pieces in same level are interweaved. All these limitations lead to unclear component boundary, complicated internal structure and i...

With the growing advancement of pervasive computing technologies, we are moving towards an era where spatio-temporal information will be necessary for access control. The use of such information can be used for enhancing the security of an application, and it can also be exploited to launch attacks. For critical applications, a formal model for spatio-temporal-based access control is needed tha...

This paper describes a multilevel development life cycle of representation refinement for knowledge-based systems that incorporates meta-knowledge at each level. The methodology uses formal techniques in the specification of the domain knowledge, the cognitive aspects and the representation. The methodology provides the knowledge engineer with a dynamic perspective of the system which can be us...

INTRODUCTION In the complex setting of a medical school it becomes essential to utilize an approach to teaching and learning that is best suited to the needs of the students. In developing countries like India, where there is an exponential increase of institutions catering to medical students, it becomes a challenge to teach to large number of students per class. Hence, research is needed to i...

In this paper we evaluate the effectiveness of applying a formal component-based approach called Analytical Software Design (ASD) to the development of control software of an industrial project at Philips Healthcare. We analyze the performance of the ASD related tasks carried out during the development processes and report about the main issues encountered. Furthermore, we investigate whether i...

Any form of model-based reasoning is limited by the adherence of the model to the actual reality. Scheduling is the problem of finding a suitable timing to execute a given set of activities accommodating complex temporal constraints. Planning is the problem of finding a strategy for an agent to achieve a desired goal given a formal model of the system and the environment it is immersed in. When...

Interaction systems are a formal model for component-based systems, where components are combined via connectors to form more complex systems. We compare interaction systems (IS) to the wellstudied model of 1-safe Petri nets (1SN ) by giving a translation map1: 1SN → IS and a translation map2: IS → 1SN, so that a 1-safe Petri net (an interaction system) and its according interaction system (1-s...