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It is a well-established phenomenon that, notwithstanding their overall good crash record, older drivers have a higher than average rate of involvement in injury crashes when the rate is calculated by dividing crash numbers by distance driven. It has been hypothesised that at least some of this higher crash rate is an artefact of the different nature of(More)
Since late 1989, the cycle helmet wearing rate in New Zealand has risen from around 20% for adults and teenagers, and 40% for younger children, to more than 90% in all age groups. Cycle helmet wearing became mandatory under New Zealand law in January 1994. This paper considers the effect of cycle helmet wearing on hospitalised head injuries between 1990 and(More)
High redshift supernovae and Cosmic Microwave Background data are used to constrain the Cardassian expansion model (Freese & Lewis, 2002), a cosmology in which a modification to the Friedmann equation gives rise to a flat, matter-dominated Universe which is undergoing a phase of accelerated expansion. In particular, the precision of the positions of the(More)
Using the bright galaxy counts from the 2 Micron All Sky Survey (2MASS) second incremental release, two techniques for probing large-scale structure at distances of ∼ 150 h −1 Mpc are investigated. First, we study the counts from two sets of six 5 • × ∼ 80 • strips in the two galactic caps. In the six southern strips a deficit of ∼ 30 per cent was found(More)
We investigate, by molecular dynamics simulation, the behaviour of discotic particles in a solvent of Lennard-Jones spheres. When chromonic disc-sphere interactions are imposed on these systems, three regimes of self-assembly are observed. At moderate temperatures, numerous short threads of discs develop, but these threads remain isolated from one another.(More)
We examine H-band number counts determined using new photometry over two fields with a combined solid angle of 0.30 deg 2 to H ≈ 19, as well as bright data (H 14) from the 2 Micron All Sky Survey (2MASS). First, we examine the bright number counts from 2MASS extracted for the ≈4000 deg 2 APM survey area situated around the southern galactic pole. We find a(More)
The magnetic-field-induced alignment of the fibrillar structures present in an aqueous solution of a dipeptide gelator, and the subsequent retention of this alignment upon transformation to a hydrogel upon the addition of CaCl2 or upon a reduction in solution pH is reported. Utilising the switchable nature of the magnetic field coupled with the slow(More)
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