A shadow-like task migration model based on context semantics for mobile and pervasive environments

Pervasive computing is a user-centric mobile computing paradigm, in which tasks should be migrated over different platforms in a shadow-like way when users move around. In this paper, we propose a context-sensitive task migration model that recovers program states and rebinds resources for task migrations based on context semantics through inserting resource description and state description sections in source programs. Based on our model, we design and develop a task migration framework xMozart which extends the Mozart platform in terms of context awareness. Our approach can recover task states and rebind resources in the context-aware way, as well as support multi- modality I/O interactions. The extensive experiments demonstrate that our approach can migrate tasks by resuming them from the last broken points like shadows moving along with the users.

Star drawings and intersections

Star Drawings and Intersections (an experimental installation) With the camera attached directly to my body extended exposures of stars were made. The images were therefore subject to the physicality of the body and it’s movements. They represent the act of photography as an extension of the body and the lens as a replacement or extension of the eye (by utilizing the camera the primary and initial a point of visualisation). The final images render the movements of the body (during the time of the extended exposures) and traces of starlight imparted during these enacted and involuntary movements. Presented as a large scale (horizontal life/figurative size) grid of images the audience is afforded the ability to view and compare the individual images and to consider them as an experimental form of phenomenological data. The work also aims to be considered as a representation of an embodied relationship to both the medium of photography and the sublime cosmos, which captured during these gestural performances. During the exhibition audience members are encouraged the engage with the grid of images by placing various objects, such as timber dowel rods, against the images as a way of invoking an extended connection - a physical line of sight and as an act of pointing to and delineating single moments within the continuum of the rendered exposure. These interactions are also a way of engaging both the physicality of the gallery and temporality of the exhibition as the timber rods cast shadows across the images which shift over time with the ever changing angle of the Sunlight as it enters though the circular arched windows of the gallery.