Browsing by Research Type "Conference or Workshop Item (Oral presentation)"
Now showing items 1-20 of 46
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Analysis of images of ice floes
This talk will address the problem of determining the semi-rigid motion of an ice floe from a series of grayscale images of the floe. The analysis will start with the global properties of the images. The next step is to ... -
The ARGOS project and the role of GIS
The paper introduces ARGOS, the Agriculture Research Group on Sustainability and discusses the potential role GIS can play within. The ARGOS programme examines the environmental, economic and social sustainability of ... -
Bayesean Analysis as a Predictor of outcome rate.
Power calculations in clinical trials depend on an estimation of a change in effect size, and this depends on an estimation of the rate of the (measured) event in the population. It may be that using a Baysian approach ... -
Biodiversity and genes on landscapes
Modelling the relationship between the genetic distribution of a biological system on a landscape, and the diversity of this system, are fundamental concepts that can be studied using simulation models. This work examines ... -
Biogeography and evolution of South Pacific topshells (Gastropoda, Trochidae) and their trematode parasites
We have used the DNA sequences of Pacific topshells, belonging to the genera Diloma, Melagraphia and Austrocochlea, to ascertain how this group became established over a large area of the Pacific. Phylogenetic analyses of ... -
Calculating the 2D motion of lumbar vertebrae using splines
We present a new method for calculating the transformation parameters for a rigid body undergoing planar motion parallel to the image plane. The method utilises splines to represent the outline of the rigid shape rather ... -
The conservation status of New Zealand’s indigenous grasslands
The conservation status of New Zealand's indigenous grasslands has been assessed, as of September 2002, against an 1840 baseline, i.e., immediately before European settlement when New Zealand grasslands were essentially ... -
Density-dependent breeding site selection in translocated populations South Island Robin and South Island Saddlebacks
Reintroduction of threatened species to predator-free offshore islands has long been advocated in New Zealand as a prime management tool for conservation. They also provide a good experimental framework to investigate ... -
The development and application of a cognitively-intuitive dynamic map based on a diffusion-based density equalizing algorithm
A Dynamic map is implemented and tested using a cartogram algorithm to distort space to enlarge any areas of user interest. The map organises space into a hierarchy of shapes, island at the country level, provinces at the ... -
Development of a non-destructive method to assess vegetation structure and structural diversity of tussock grasslands at a landscape scale
Measurements of vegetation structure (the three dimensional placement of the vegetation biomass) and structural diversity (the number of vegetation layers present and the abundance of vegetation within them) are required ... -
Development of an automated tracking system for analysis of human movement
To understand the mechanisms underlying a successful team, one must first understand the circumstances leading to successful performance outcomes (i.e., point/goal scoring events). However, tracking player performance in ... -
Does space always matter in the origin of biological species
For the last 40 years one of the most contentious issues in evolutionary biology has been determining the role that spatial separation of populations plays in the generation of new species. Most early formulations of this ... -
The effect of spatial population structure on levels of genetic variation
A vast amount of genetic variation is a striking hallmark of natural populations, and is vital to the adaptation and long-term survival of a species. Just why this variation is there, however, is unclear: the two most ... -
The evolutionary consequences of phenotypic plasticity: adding spatial dimension
I describe a model for the evolutionary consequences of plasticity in an environmentally heterogeneous metapopulation in which specialists for each of two alternative environments and one plastic type are initially present. ... -
Examining the relationship between biodiversity and land management in mid-altitude tall tussock grasslands
Agricultural expansion is a major threat to the indigenous biodiversity of New Zealand’s tussock grasslands. Options for integrating biodiversity conservation with agricultural management is a topic that requires further ... -
Extraction of end-of-summer snowlines from ASTER images for Southern Alps
Glacier fluctuations have been recognized as one of the clearest signals of climate variability and change. A change in climate characteristics directly alters the glacier mass balance. The End-Of-Summer-Snowlines (EOSS) ... -
Geographic information systems at AgResearch
AgResearch is New Zealand’s largest Crown Research Institute and undertakes research in the areas of pastoral agriculture and environment, applied biotechnologies, and food and textiles. While there is a great deal of scope ... -
Geospatial aspects of alcohol-related harm in New Zealand
The leading cause of mortality in 15-24 year-olds in New Zealand is injury, accounting for three quarters of deaths. Road traffic crashes account for over half of all injury deaths and a third of hospitalisations, and ... -
GIS as a mine rehabilitation tool: examples from Wangaloa Coal Mine
At the Wangaloa Coal Mine, South-East Otago, ArcGIS is being used to manage, integrate, analyse and visualise the diverse range of datasets being generated from an interdisciplinary research team. GIS will assist with ... -
Habitat mapping on the coastal plains
Less than 5% of the land on New Zealand’s coastal plains is still in predominantly indigenous habitats, falling to less than 2% across much of the Southland and Manawatu coastal plains. The protection, conservation, and ...