Helically decomposed turbulence

Helically Coiled Heat Exchangers

Helically twisted photonic crystal fibres

Recent theoretical and experimental work on helically twisted photonic crystal fibres (PCFs) is reviewed. Helical Bloch theory is introduced, including a new formalism based on the tight-binding approximation. It is used to explore and explain a variety of unusual effects that appear in a range of different twisted PCFs, including fibres with a single core and fibres with N cores arranged in a ...

Inheritance Decomposed Position Paper

Inheritance is often portrayed as a fundamental ingredient of object-oriented programming, one which is essential to building extensible software systems. However, inheritance is also a controversial mechanism with many competing and often contradictory interpretations, whose use can even impede extensibility in certain scenarios. Decomposing inheritance into the more basic mechanisms of object...

Managing decomposed belief functions

In this paper we develop a method for clustering all types of belief functions, in particular nonconsonant belief functions. Such clustering is done when the belief functions concern multiple events, and all belief functions are mixed up. Clustering is performed by decomposing all belief functions into simple support and inverse simple support functions that are clustered based on their pairwis...

Models of helically symmetric binary systems

Results from helically symmetric scalar field models and first results from a convergent helically symmetric binary neutron star code are reported here; these are models stationary in the rotating frame of a source with constant angular velocity Ω. In the scalar field models and the neutron star code, helical symmetry leads to a system of mixed elliptic-hyperbolic character. The scalar field mo...