A method is proposed whereby values for Service Level Objectives (SLOs) of an SLA can be chosen to reduce the sum IT infrastructure cost plus business financial loss. Business considerations are brought into the model by including the business losses sustained when IT components fail or performance is degraded. To this end, an impact model is fully developed in the paper. A numerical example co...

This paper presents the analysis, design and implementation of security facilities within the edutain@grid infrastructure, to support secure hosting of Real-Time On-line Interactive Applications (ROIA). The edutain@grid project aims to develop a novel, sophisticated and service-oriented Grid infrastructure which provides a generic, scalable, reliable and secure service infrastructure for ROIA. ...

The current Web cache infrastructure, though it has a number of performance benefits, does not address many of the publishers’ requirements. We argue that web caches should be enhanced to address publishers’ needs. For example, caches will need to log client accesses, run scripts to dynamically produce content, and give publishers QoS guarantees. In this paper, we propose Gemini, a publishercen...

In this article, speculative virontology refers to a form of thought that revalues the biontological framework present in current queer theoretical and new materialist thinking. Using an archive horror films, Paul Golding’s Pulse from 1988 particular, article points toward malevolent infrastructure – conceptualization matter is performatively terrorizing closedness mutually constitutive design ...

Owing to the immense climate changes in recent years, city of Hamburg has decided allow purchase only emission-free buses for public transportation. Meanwhile, focuses on implementation electric buses. For this purpose, two transportation companies which are Hamburger Hochbahn AG (HOCHBAHN), and Verkehrsbetriebe Hamburg-Holstein GmbH (VHH) build new charging infrastructure bus depots. In additi...