Science and Engineering
This community houses research from the Faculty of Science and Engineering at the University of Waikato.
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Antarctic Theses [21]
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A data mining approach to evaluate suitability of dissolved oxygen sensor observations for lake metabolism analysis
(Wiley, 2018)Despite rapid growth in continuous monitoring of dissolved oxygen for lake metabolism studies, the current best practice still relies on visual assessment and manual data filtering of sensor observations by experienced ... -
Cause of pulse artefacts inherent to the electrodes of neuromodulation implants
(Institute of Electrical and Electronics Engineers, 2018)The current pulses delivered through platinum electrodes by medical implants to recruit neurones give rise to slowly-decaying voltage tails, called "artefacts''. These tails make measurement of evoked potentials following ... -
Impacts of hatchery-reared mandarin fish Siniperca chuatsi stocking on wild fish community and water quality in a shallow Yangtze lake
(Nature Publishing Group, 2018)Mandarin fish Siniperca chuatsi, a valuable piscivorous fish, have been stocked into many lakes in China since the 1990s. This study did the first attempt to evaluate the ecological effects of hatchery-reared mandarin fish ... -
Variation in mandible shape and body size of house mice Mus musculus in five separate New Zealand forest habitats
(Taylor & Francis, 2018)This study investigates variation in house mouse Mus musculus body size and mandible shape across New Zealand, using geometric morphometrics and biomechanical advantage analyses. The Mus phylogroups currently known in New ... -
Summer meltwater and spring sea ice primary production, light climate and nutrients in an Arctic estuary, Kangedussuaq, west Greenland
(Taylor & Francis, 2018)The estuary is dominated by sea ice and snow cover from winter to spring, and a highly turbid meltwater plume during summer. The aims were to quantify the variability in optical conditions, inorganic nutrients, and primary ... -
The effects of velocity and nitrate on Phormidium accrual cycles: a stream mesocosm experiment
(University of Chicago Press, 2018)Proliferations of benthic cyanobacteria in the genus Phormidium are a global concern because of their increasing prevalence and ability to produce harmful toxins. Most studies have been observational and have linked ... -
Distribution of tetrodotoxin in the New Zealand clam, Paphies australis, established using immunohistochemistry and liquid chromatography-tandem quadrupole mass spectrometry
(MDPI, 2018)Tetrodotoxin (TTX) is one of the most potent neurotoxins known. It was originally thought to only occur in puffer fish but has now been identified in twelve different classes of freshwater and marine organisms, including ... -
Intragastric preloads of L-tryptophan reduce ingestive behavior via oxytocinergic neural mechanisms in male mice
(Elsevier, 2018)Human and laboratory animal studies suggest that dietary supplementation of a free essential amino acid, l-tryptophan (TRP), reduces food intake. It is unclear whether an acute gastric preload of TRP decreases consumption ... -
The crystal structures of 1-(4-bromo-2,3,5,6-tetrafluorophenyl)-3-benzyl-methylimidazolium bromides
(Elsevier, 2018)The crystal structures of 1-(4-bromo-2,3,5,6-tetrafluorophenyl)-2-methyl-3-benzylimidazolium bromide (8) and 1-(4-bromo-2,3,5,6-tetrafluorophenyl)-3-benzyl-4-methylimidazolium bromide (9) have been determined by single ... -
Transit time distributions are not L-shaped
(New Zealand Hydrological Society, 2018)A probability density function f(t) with origin at t = 0 is defined here as being ‘L-shaped’if f ʹ(t) ≤ 0 for t ≥ 0. L-shaped probability density functions, such as exponential distributions, are often employed as transit ... -
Colour classification of 1486 lakes across a wide range of optical water types
(MDPI AG, 2018)Remote sensing by satellite-borne sensors presents a significant opportunity to enhance the spatio-temporal coverage of environmental monitoring programmes for lakes, but the estimation of classic water quality attributes ... -
Synthesis and characterisation of organo-platinum(II) complexes of the N,O-donor ligands hippuric acid (N-benzoylglycine) and N-phenylanthranilic acid
(Elsevier, 2016)Reaction of [PtCl₂(cod)] (cod = cyclo-octa-1,5-diene) with either hippuric acid [PhC(O)NHCH₂COOH] or N-phenylanthranilic acid (ortho-PhNHC₆H₄COOH) in refluxing dichloromethane in the presence of silver(I) oxide gave the ... -
Microbial biogeography of 925 geothermal springs in New Zealand
(Nature Publishing Group, 2018)Geothermal springs are model ecosystems to investigate microbial biogeography as they represent discrete, relatively homogenous habitats, are distributed across multiple geographical scales, span broad geochemical gradients, ... -
Difference in details: transfer learning case study of "cryptic" plants and moths
(2018)Can we classify species of very similar looking organisms quickly and accurately using only out of the box feature transfer? What if we only have small number of images? This experimental paper is part of on-going project ... -
Effect of contextual information on object tracking
(IEEE, 2017)Local object information, such as the appearance and motion features of the object, are useful for object tracking in videos provided the object is not occluded by other elements in the scene. During occlusion, however, ... -
Corrections to Compact Nonlinear Model of an Implantable Electrode Array for Spinal Cord Stimulation
(Institute of Electrical and Electronics Engineers, 2018)Reference [1] describes the construction of a model of the electrode-electrolyte interface and the surrounding electrolyte for a platinum-electrode array used in Spinal Cord Stimulation (SCS) applications. In that paper, ... -
Biophysical modeling of neural plasticity induced by transcranial magnetic stimulation
(Elsevier, 2018)Transcranial magnetic stimulation (TMS) is a widely used noninvasive brain stimulation method capable of inducing plastic reorganisation of cortical circuits in humans. Changes in neural activity following TMS are often ... -
Quaternary research in New Zealand and relationship to the International Union for Quaternary Research (INQUA). Annual Report for the Catalyst Fund: Influence 2017 (with Appendix).
(School of Science, University of Waikato, Hamilton., 2018)It is anticipated that this report has been discussed in some form with the national committee or organisation identified above and provides the wider view of this network. I have discussed the report with some of the ... -
Location of Te Wahitapu Stream and other possible streams in 1877
(2009)Review of evidence to establish, with as much confidence as possible, the path of the Te Wahitapu Stream at Matapouri in 1877. The review also examines if other streams may have been present on or in the vicinity of Te ... -
Classifying Transverse Motion in Time-of-Flight Range Imaging
(OSA Publishing, 2018)Classification of step motion in time-of-flight imaging using the stochastic oscillator and autocorrelation is proposed. Machine learning algorithms correctly identify the step location in 65–75% of trials, with apparent ...
