Secure Tropos: A Security-Oriented Extension of the Tropos methodology

Although security plays an important role in the development of multiagent systems, a careful analysis of software development processes shows that the definition of security requirements is, usually, considered after the design of the system. One of the reasons is the fact that agent oriented software engineering methodologies have not integrated security concerns throughout their developing stages. The integration of security concerns during the whole range of the development stages can help towards the development of more secure multiagent systems. In this paper we introduce extensions to the Tropos methodology to enable it to model security concerns throughout the whole development process. A description of the new concepts and modelling activities is given along with a discussion on how these concepts and modelling activities are integrated to the current stages of Tropos. A real life case study from the health and social care sector is used to illustrate the approach.

The Artpolitics of May Stevens’ work: disrupting the distribution of the sensible

In this paper I look into the life and art of May Stevens, an American working class artist, feminist and committed political activist. I am particularly interested in how Stevens' artwork is inextricably interwoven with her politics, constituting, as I will argue, an assemblage of artpolitics. The discussion draws on Jacques Rancière's analyses of the politics of aesthetics and particularly his notion of ‘the distribution of the sensible’. What I argue is that although Rancière's approach to the politics of aesthetics illuminates an understanding and appreciation of Stevens' art, his idea about the redistribution of the sensible is problematic. It is here that the notion of artpolitics as an assemblage opens up possibilities for a critical project that goes beyond the limitations of Rancière's proposition.