82,967 results

  • Ha tűz és jég találkozik - A Déli-Andok lahart adó vulkánjain

    Nemeth, Karoly (2006-01-01)

    Journal article
    Massey University

    No abstract available

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  • Revisiting politicization: Political advisers and public servants in Westminster systems

    Eichbaum, C; Shaw, RH (2008)

    Journal article
    Massey University

    false

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  • Egy előre bejelentett lahar meglepetései. Gátszakadás a Ruapehu-vulkánon

    Nemeth, Karoly (2007-01-01)

    Journal article
    Massey University

    No abstract available

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  • Low-power and High-speed Implementation of Pulse Shaping Filters in Software Defined Radio Receivers

    Vinod, A. P.; Lai, Edmund M-K. (2006-07-01)

    Journal article
    Massey University

    No abstract available

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  • Innovation and identity in distance language learning and teaching

    White, Cynthia (2007)

    Journal article
    Massey University

    doi: 10.2167/illt45.0

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  • Un Maar en las cercanías de Río Gallegos, Santa Cruz.

    Haller, Miguel J.; Nemeth, Karoly; Meister, Carlos M. (2005-01-01)

    Journal article
    Massey University

    No abstract available

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  • A third force?: Ministerial advisers in the Executive

    Eichbaum, C; Shaw, RH (2003)

    Journal article
    Massey University

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  • Hierarchically Clustered Adaptive Quantization CMAC and Its Learning Convergence

    Lai, Edmund M-K. (2007-11-01)

    Journal article
    Massey University

    No abstract available

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  • Exploring The Responsibilities Of Single-Inhabitant Smart Homes With Use Cases

    Lyons, Paul; Steinhauer, H. Joe; Marsland, Stephen; Dietrich, Jens; Guesgen, Hans W.; Tran, An C. (2010-06)

    Journal article
    Massey University

    DOI: 10.3233/AIS-2010-0076

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  • Development of an automatic lameness detection system for dairy cattle : A thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Mechatronics at Massey University, Manawatu, New Zealand. EMBARGOED UNTIL 1 April 2018

    Dalbeth, Aaron (2016)

    Masters thesis
    Massey University

    Lameness in dairy cattle negatively effects the welfare of affected cows and is the third biggest cause of economic loss to the dairy industry in New Zealand. As the cost and frequency of lameness continues to increase, profitability will further decrease, unless a more effective and efficient method of detecting cattle lameness is found. The main objective of this study was to investigate whether differences between healthy and lame cattle could be identified by capturing ground reaction forces when the dairy cattle walked over the designed platform. [Partial abstract]

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  • Reproductive performance of singleton and twin female offspring born to ewe-lamb dams and mature adult dams

    Kenyon, PR

    Conference paper
    Massey University

    false

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  • Phase and Rheological Behavior of High-Concentration Colloidal Hard-Sphere and Protein Dispersions

    Loveday, Simon; Creamer, Lawrence K.; Singh, Harjinder; Rao, M. A. (2007)

    Journal article
    Massey University

    The definitive version is available at http://onlinelibrary.wiley.com/doi/10.1111/j.1750-3841.2007.00452.x/abstract

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  • Rheological Behavior of High-concentration Sodium Caseinate Dispersions

    Loveday, Simon; Rao, M. A.; Creamer, Lawrence K.; Singh, Harjinder (2010)

    Journal article
    Massey University

    The definitive version is available at http://onlinelibrary.wiley.com/doi/10.1111/j.1750-3841.2009.01493.x/abstract

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  • Constructing the Female Mathematics Teacher: A New Zealand Historical Case Study

    Walshaw, MA (2014)

    Journal article
    Massey University

    In this paper we explore the ways in which meanings of the female mathematics teacher are subjectively and collectively constructed, legitimated and challenged. Our context is New Zealand during the 1950s. We use history to explore female mathematics teacher constructions by looking at the genesis, development, and outcome of an initiative of the New Zealand Department of Education. The Science and Mathematics New Scheme, conceived in 1957 and introduced early in the following year, represented a sustained attempt on the part of the government to attract young women into the teaching profession as a way of managing a crisis in teacher supply. Our historical analysis offers a lens through which to view the production of and challenges to gender knowledge during a time of political and social ambiguity towards professional women.

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  • Középső-triász platformkarbonátok és vulkanitok vizsgálata a Latemar környékén (Dolomitok, Olaszország) [Middle Triassic platform carbonates and volcanites in the Latemar area (Dolomites, Italy)]

    Budai, Tamas; Nemeth, Karoly; Piros, Olga (2005-01-01)

    Journal article
    Massey University

    Sponsored by the T043341 project of the Hungarian Research Found (OTKA) we have investigated the buildup of the Middle Triassic Latemar platform (Western Dolomites), its volcanic stuctures and also basinal successions of the surrounding area. Our leader on the field trip was Nereo Preto from the Padova University. The relatively small isolated Middle Triassic carbonate platform of the Latemar is one of the most famous Triassic platform of the Dolomites. It is surrounded by pelagic sediments of coeval interplatform basins. The main part of the platform is built up by cyclic peritidal to subtidal lagoon facies. Within this succession more than 600 shallowing upward basic cycles were reconstructed and several higher cyclostratigraphic units were defined. These cycles have been interpreted as orbitally forced Milankovič cycles. Based on their concept therefore 14 My were estimated for the duration of the deposition of the whole carbonate sequence. However, on the basis of new biostratigraphic and radiometric data that yielded a duration only between 2 and 4,7 My a group of researchers questioned this interpretation. The Sciliar (Schlern) Formation has been only slightly dolomitized on the Latemar, this causes unique preservation of the fossils. Dasycladacean algae and ammonoids occure together in the platform succession. Correlation of algae and ammonoid zonation can give a chance to use a more accurate and detailed chronostratigraphic chart within the Middle Triassic platforms not only in the Dolomites but in the whole area of the Western Tethys. Ammonite bearing limestone lying above the "lower edifice" belongs to the Avisianum Subzone of the Reitzi Zone (sensu VÖRÖS 1998). Based on our field observations this facies can be interpreted as infilling of a channel which connected the platform-lagoon with the pelagic basin. Within the overlying platform carbonate succession the Crassus and Serpianensis Subzone (sensu MIETTO, MANFRIN 1995) can be detected while in the uppermost part of the section the basal Curionii Zone was also indicated. Preliminary investigations of algae-assemblage show (Fig. 5) that the last occurence of Diplopora annulatissima can be correlated with the base of Secedensis (Nevadites) Zone, while the first occurence of Teutloporella herculea fits to the base of Curionii Zone. The later change in the flora may give the opportunity to fix the newly difined Anisian/Ladinian boundary within thick platform carbonate successions, as well. Being calibrated with ammonite zones the Dasycladacean zonation of the Latemar provides useful tool for chronostratigraphic subdivision of the Budaörs Dolomite (lithostratigraphic counterpart of the Schlern Formation) and for reconstruction of the evolution of Middle Triassic platforms in the Transdanubian Range. A series of dyke swarm cross cuts the carbonate platform of the Latemar. The individual dykes are mafic, aphanitic to microholocrystalline, and they vary in thickness between dm to tens of metres. The dyke margins are generally straight, however, long wavelength and small amplitude undulations have been recognized in case of thick dykes. The dykes have chilled margin up to 10 cm in width. Quench crystals of plagioclase are common in mm-size range and their size increases toward the centre of the dykes. The dykes are more weathered than the surrounding carbonate material, and therefore their location is represented by sharp irregularities in the otherwise flat top of the platform. Along the dyke strikes in the centre of the Latemar three pyroclastic breccia zone have been identified. The southernmost is a complex association of tilted limestone beds that are surrounded by a coarse-grained pyroclastic breccia. They form funnel shape disturbed zone in the carbonate platform with an average width of 150 m. In the pyroclastic breccia, angular shape basaltoid lapilli are common. Basaltoid lapilli are abundant in lherzolite nodules with angular shape and few cm in diameter. Similar, but larger nodules form cumulate zones in the basal region of the exposed volcaniclastic succession. The volcanic clasts are generally altered, but their shape is still angular, and closely resembling their non-abraded, primary origin due to fragmentation of the magma by an explosive volcanic eruption. The volcanic clasts, as well as the intruded irregularly shaped dykes in the lower part of the volcanic pipe are chilled indicating sudden cooling by magma-water interaction as an inferred fragmentation process. In the pyroclastic breccia hosts there are large angular shape blocks of debris that have been derived from the surrounding carbonate platform units. These clasts range cm to few m size in diameter and they are always angular, indicating that they must have been consolidated and hard by the time they have been disrupted by an eruption. In the upper part of the volcanic breccia pipe mega-blocks up to few tens of metres across have been identified. They are tilted, rotated, and form a chaotic zone in the pyroclastic breccia host all indicates that they have been derived from a former conduit/crater wall. The general architecture of the volcanic breccia pipe is inferred to be a diatreme that is an exposed and exhumed volcanic conduit of a former phreatomagmatic volcano. North of the above described diatreme two other pyroclastic breccia body forms a few tens of metres wide semicircular zone. Each of them is rich in angular limestone fragments, gravels, and bedded red lapilli tuff fragments. Carbonate clasts often form trains of clasts indicative of some sort of movement through the pyroclastic breccia zone inferred to be a result of a fluidization through the volcanic pipe. Each pyroclastic breccia pipe shows angularity, chilled margins, microlite-free textural features on the juvenile clasts that are indicative for fragmentation by sudden cooling of magma by magma/water interaction. The identified three pyroclastic breccia pipes are inferred to be diatremes, root zones of former small to medium volume, mafic, phreatomagmatic volcanoes. K/Ar dating of the sample from the diatreme gave an age of 204±7.8 My (Balogh Kadosa pers. comm.). Near to the Latemar on the Dos Capel, a thick succession of pelagic basin fcies (Livinallongo Formation, partly heteropic with the Sciliar Formation) crops out which is interbedded with several dm thick pyroclastic beds of typical "pietra verde". The grading, sorting, lower and upper bed contacts indicate that these beds were predominantly deposited by ash turbidites that carried volcanic material into the basin. Thin layers of fall beds also exist. Near the top of the Dos Capel sequence a well-exposed thickly to thinly bedded, accidental lithic-rich, cross-bedded or stratified, occasionally dune-bedded lapilli tuff and tuff succession crops out. These beds are rich in angular limestone clasts that occasionally form shallow impact sags on the underlying bed surface. The juvenile clasts are angular, chilled, and low in vesicularity, characteristic for juvenile fragments fragmented by phreatomagmatic explosive interaction of melt and water. The large volume of the accidental lithic clasts in the pyroclastic rock units indicates that the magma fragmentation must have occurred in subsurface environment and/or the volcanic conduit was partially closed. On the basis of the preliminary field study and comparison of different volcanic facies in and around the Latemar highlight the possible facies relationships between diatremes that cut through the platform and their eruption fed tephra falls deposited in the pelagic basin and/or produced pyroclastic density currents that may initiated volcaniclastic turbidites transported pyroclasts deep into the basin around the platforms. It is also inferred that in a shallow water environment pyroclastic mounds and associated tuff cones may have produced volcanic islands on top of platforms and an entire lateral facies transition could be expected to be identified in the near future via systematic mapping and interpretation of the pyroclastic successions in the region.

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  • A model for phenotype change in a stochastic framework

    Wake, Graeme C.; Pleasants, A.; Beedle, A.; Gluckman, P. (2010)

    Journal article
    Massey University

    some species, an inducible secondary phenotype will develop some time after the environmental change that evokes it. Nishimura (2006) [4] showed how an individual organism should optimize the time it takes to respond to an environmental change ("waiting time''). If the optimal waiting time is considered to act over the population, there are implications for the expected value of the mean fitness in that population. A stochastic predator-prey model is proposed in which the prey have a fixed initial energy budget. Fitness is the product of survival probability and the energy remaining for non-defensive purposes. The model is placed in the stochastic domain by assuming that the waiting time in the population is a normally distributed random variable because of biological variance inherent in mounting the response. It is found that the value of the mean waiting time that maximises fitness depends linearly on the variance of the waiting time.

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  • Quantifying Risk Factors for Human Brucellosis in Rural Northern Tanzania

    Kunda, John; Fitzpatrick, Julie; French, Nigel; Kazwala, Rudovick; Kambarage, Dominic; Mfinanga, Godfrey S.; MacMillan, Alastair; Cleaveland, Sarah (2010-04-01)

    Journal article
    Massey University

    Funding: The study was funded by the Department for International Development of the UK through the Animal Health Programme. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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  • LineageSpecificSeqgen: generating sequence data with lineage-specific variation in the proportion of variable sites

    Grievink, Liat Shavit; Penny, David; Hendy, Mike D; Holland, Barbara R (2008-11-21)

    Journal article
    Massey University

    Background: Commonly used phylogenetic models assume a homogeneous evolutionary process throughout the tree. It is known that these homogeneous models are often too simplistic, and that with time some properties of the evolutionary process can change (due to selection or drift). In particular, as constraints on sequences evolve, the proportion of variable sites can vary between lineages. This affects the ability of phylogenetic methods to correctly estimate phylogenetic trees, especially for long timescales. To date there is no phylogenetic model that allows for change in the proportion of variable sites, and the degree to which this affects phylogenetic reconstruction is unknown. Results: We present LineageSpecificSeqgen, an extension to the seq-gen program that allows generation of sequences with both changes in the proportion of variable sites and changes in the rate at which sites switch between being variable and invariable. In contrast to seq-gen and its derivatives to date, we interpret branch lengths as the mean number of substitutions per variable site, as opposed to the mean number of substitutions per site (which is averaged over all sites, including invariable sites). This allows specification of the substitution rates of variable sites, independently of the proportion of invariable sites. Conclusion: LineageSpecificSeqgen allows simulation of DNA and amino acid sequence alignments under a lineage-specific evolutionary process. The program can be used to test current models of evolution on sequences that have undergone lineage-specific evolution. It facilitates the development of both new methods to identify such processes in real data, and means to account for such processes. The program is available at: http://awcmee.massey.ac.nz/downloads.htm.

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  • Examining the importance of Aberdeenshire (UK) coastal waters for North Sea bottlenose dolphins (Tursiops truncates)

    Stockin, K. A.; Weir, C. R.; Pierce, G. J. (2006)

    Journal article
    Massey University

    Using land- and vessel-based surveys, data on the relative abundance, distribution and habitat use of bottlenose dolphins (Tursiops truncatus) in Aberdeenshire waters were collected between 1999 and 2001. Bottlenose dolphins were present throughout the year, with peak abundance during the months of March to May. The occurrence of calves was seasonal, With the proportion of calves highest during the spring months. Foraging behaviour was recorded mainly in the vicinity of Aberdeen harbour. Dolphins photographed in Aberdeenshire waters were successfully matched and confirmed as Moray Firth animals. The results of the present study suggest that Moray Firth bottlenose dolphins utilize Aberdeenshire waters more frequently than previously reported. Aberdeen harbour is apparently an important feeding area, and Aberdeenshire waters are regularly used by another-calf pairs. This has important management implications since this area of coastline does not currently form part of the designated Special Area of Conservation (SAC) for this population.

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  • The association between retinal vein ophthalmodynamometric force change and optic disc excavation

    Morgan, W. H.; Hazelton, M. L.; Balaratnasingamm, C.; Chan, H.; House, P. H.; Barry, C. J.; Cringle, S. J.; Yu, D-Y. (2008-12-19)

    Journal article
    Massey University

    Aim: Retinal vein ophthalmodynamometric force (ODF) is predictive of future optic disc excavation in glaucoma, but it is not known if variation in ODF affects prognosis. We aimed to assess whether a change in ODF provides additional prognostic information. Methods: 135 eyes of 75 patients with glaucoma or being glaucoma suspects had intraocular pressure (IOP), visual fields, stereo optic disc photography and ODF measured on an initial visit and a subsequent visit at mean 82 (SD 7.3) months later. Corneal thickness and blood pressure were recorded on the latter visit. When venous pulsation was spontaneous, the ODF was recorded as 0 g. Change in ODF was calculated. Flicker stereochronoscopy was used to determine the occurrence of optic disc excavation, which was modelled against the measured variables using multiple mixed effects logistic regression. Results: Change in ODF (p=0.046) was associated with increased excavation. Average IOP (p=0.66) and other variables were not associated. Odds ratio for increased optic disc excavation of 1.045 per gram ODF change (95% CI 1.001 to 1.090) was calculated. Conclusion: Change in retinal vein ODF may provide additional information to assist with glaucoma prognostication and implies a significant relationship between venous change and glaucoma patho-physiology.

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