Group valued edge labellings λ of a Bratteli diagram B give rise to a skew-product Bratteli diagram B(λ) on which the group acts. The quotient by the group action of the associated dynamics can be a nontrivial extension of the dynamics of B. We exhibit a Bratteli diagram for this quotient and construct a morphism to B with unique path lifting property. This is shown to be an isomorphism for the...

The concept of self-protection, a capability of an organism to protect itself from exogenous attacks, is introduced into the design of artificial evolutionary systems as a possible method to create and maintain diversity in the population. Three different mechanisms of self-protection are considered and implemented on a cellular-automaton-based evolutionary system, the evoloop. Simulation resul...

This paper explores the concept of micro-architectural loops and discusses their impact on processor pipelines. In particular, we establish the relationship between loose loops and pipeline length and configuration, and show their impact on performance. We then evaluate the load resolution loop in detail and propose the distributed register algorithm (DRA) as a way of reducing this loop. It dec...

The cost of information technology project failures or poor performance is unacceptably high due, in part, to a lack of knowledge sharing from project to project. Insufficient knowledge sharing leads to intellectual capital loss, rework, skills deterioration, and repeated mistakes that increase project costs leading to failure. Knowledge exists at both the organizational and project levels; env...

Drawing on a 19-month ethnographic study, this essay explores how rural young people weave digital-media-generated source materials into their identity work, particularly as they navigate the politics of visibility’s master narrative event: ‘‘coming out.’’ More so than in urban scenes where a critical mass of LGBTQ visibility is taken for granted, these stories resonate with the complex negotia...

A significant amount of rework in construction is caused by client last-minute changes and their inability to acquire a realistic appreciation of the product and from the 2-D drawings at the design development process. This paper introduces a computer system that enables a user to construct a 3D design model efficiently using object models stored in element libraries. The system allows the user...