title: Selective decay and coherent vortices in two-dimensional incompressible turbulence

authors: Matthaeus, William H.

subjects: turbulence

abstract: Numerical solution of two-dimensional incompressible hydrodynamics shows that states of a near-minimal ratio of enstrophy to energy can be attained in times short compared with the flow decay time, confirming the simplest turbulent selective decay conjecture, and suggesting that coherent vortex structures do not terminate nonlinear processes. After all possible vortex mergers occur, the vorticity attains a particlelike character, suggested by the late-time similarity of the streamlines to Ewald potential contours.

text: Selective decay and coherent vortices in two-dimensional incompressible turbulence Numerical solution of two-dimensional incompressible hydrodynamics shows that states of a near-minimal ratio of enstrophy to energy can be attained in times short compared with the flow decay time, confirming the simplest turbulent selective decay conjecture, and suggesting that coherent vortex structures do not terminate nonlinear processes. After all possible vortex mergers occur, the vorticity attains a particlelike character, suggested by the late-time similarity of the streamlines to Ewald potential contours.

year: 1991

title: Assessing stability in body weight in the brushtail possum (Trichosurus vulpecular)

authors: Cameron, Kristie Elizabeth

subjects: brushtail possum

abstract: When conducting controlled laboratory studies with non-traditional laboratory animals it is important that methods for determining body weight stability are reliable. This helps ensure the health and welfare of animals when they are maintained during periods of free feeding or food restriction. This study compared different methods for determining body weight stability in six common brushtail possums (Trichosurus vulpecula) maintained on a free-feeding diet under laboratory conditions. A criterion of five consecutive weighings with less than ±2.5% change across days and no more than two consecutive days of weight loss or weight gain was judged to be the most suitable criteria for determining stability. It is important to study non-traditional animals, especially endangered or pest species, under controlled laboratory conditions and to have robust methods for establishing body weight stability.

text: Assessing stability in body weight in the brushtail possum (Trichosurus vulpecular) When conducting controlled laboratory studies with non-traditional laboratory animals it is important that methods for determining body weight stability are reliable. This helps ensure the health and welfare of animals when they are maintained during periods of free feeding or food restriction. This study compared different methods for determining body weight stability in six common brushtail possums (Trichosurus vulpecula) maintained on a free-feeding diet under laboratory conditions. A criterion of five consecutive weighings with less than ±2.5% change across days and no more than two consecutive days of weight loss or weight gain was judged to be the most suitable criteria for determining stability. It is important to study non-traditional animals, especially endangered or pest species, under controlled laboratory conditions and to have robust methods for establishing body weight stability.

year: 2014

title: Intra-propositional relations and their signalling: An investigation of authentic Māori texts

authors: Whaanga, Hēmi

subjects: Language & education

abstract: I report here on one part of a research project that involved the investigation of a range of authentic Māori texts in terms of two types of meaning relation – those that operate within propositions (‘intra-propositional relations’) and those that link propositions or groups of propositions (‘inter-propositional relations’). The focus here is on intra-propositional relations (relationships within propositions). On the basis of the comparison of a number of intra-propositional relational models, a new model which draws inspiration from the work of Crombie is proposed and applied to a corpus of texts written in Māori, the emphasis being on the ways in which these relations are signalled in Māori.

text: Intra-propositional relations and their signalling: An investigation of authentic Māori texts I report here on one part of a research project that involved the investigation of a range of authentic Māori texts in terms of two types of meaning relation – those that operate within propositions (‘intra-propositional relations’) and those that link propositions or groups of propositions (‘inter-propositional relations’). The focus here is on intra-propositional relations (relationships within propositions). On the basis of the comparison of a number of intra-propositional relational models, a new model which draws inspiration from the work of Crombie is proposed and applied to a corpus of texts written in Māori, the emphasis being on the ways in which these relations are signalled in Māori.

year: 2010