Now showing items 1-20 of 921

    • 11-interval PFG pulse sequence for improved measurement of fast velocities of fluids with high diffusivity in systems with short T2* 

      Boyce, C.M.; Rice, N.P.; Sederman, A.J.; Dennis, J.S.; Holland, D.J. (University of Canterbury. Chemical and Process Engineering, 2016)
      Magnetic resonance (MR) was used to measure SF6 gas velocities in beds filled with particles of 1.1 mm and 0.5 mm in diameter. Four pulse sequences were tested: a traditional spin echo pulse sequence, the 9-interval and ...
    • 1D and 3D models of cerebrovascular flow 

      Moore, S.M.; Moorhead, K.T.; Chase, J.G.; David, T.; Fink, J. (University of Canterbury. Mechanical Engineering., 2005)
      The Circle of Willis is a ring-like structure of blood vessels found beneath the hypothalamus at the base of the brain. Its main function is to distribute oxygen-rich arterial blood to the cerebral mass. One-dimensional ...
    • The 2015 Gorkha Nepal Earthquake: insights from earthquake damage survey 

      Goda, K.; Kiyota, T.; Pokhrel, R.M.; Chiaro, G.; Katagiri, T.; Sharma, K.; Wilkinson, S. (University of Canterbury. Civil and Natural Resources Engineering, 2015)
      The 2015 Gorkha Nepal earthquake caused tremendous damage and loss. To gain valuable lessons from this tragic event, an earthquake damage investigation team was dispatched to Nepal from 1 May 2015 to 7 May 2015. A unique ...
    • A 3-approximation algorithm for the subtree distance between phylogenies 

      Bordewich, M.; McCartin, C.; Semple, C. (University of Canterbury. Mathematics and Statistics., 2008)
      In this paper, we give a (polynomial-time) 3-approximation algorithm for the rooted subtree prune and regraft distance between two phylogenetic trees. This problem is known to be NP-complete and the best previously known ...
    • 3D models of blood flow in the cerebral vasculature 

      Moore, S.M.; David, T.; Chase, J.G.; Arnold, J.; Fink, J. (University of Canterbury. Mechanical Engineering., 2006)
      The circle of Willis (CoW) is a ring-like arterial structure located in the base of the brain and is responsible for the distribution of oxygenated blood throughout the cerebral mass. To investigate the effects of the ...
    • 3D Printed Porous Media Columns with Fine Control of Column Packing Geometry 

      Fee, C.J.; Nawada, S.; Dimartino, S. (University of Canterbury. Chemical and Process EngineeringUniversity of Canterbury. College Office (Engineering)University of Canterbury. Biomolecular Interaction Centre, 2014)
      In this paper we demonstrate, for the first time, the use of 3D printing (also known as additive manufacturing or rapid prototyping) to create porous media with precisely defined packing morphologies, directly from computer ...
    • 3D Printed Stirling Engines for Education of Machine Design and Analysis 

      Clucas, D.; Gutschmidt, S. (University of Canterbury. Mechanical Engineering, 2016)
      The recent proliferation of low to medium cost additive manufacturing equipment opens a doorway to using the technology for aiding the education of many engineering principles. Stirling cycle engines are highly complex ...
    • Accumulation and fate of contaminants (Zn, Pb, Fe and S) in substrates of wetlands constructed for treating mine wastewater 

      O'Sullivan, A.D.; Moran, B.M.; Otte, M.L. (University of Canterbury. Civil Engineering., 2004)
      Substrates of treatment wetlands, which were constructed at an operational lead-zinc mining facility (Tara Mines) in Ireland, were analysed over a 5-year period for metal content. Lead, zinc, iron and sulphate were removed ...
    • Accuracy and performance of continuous glucose monitors in athletes 

      Thomas F; Pretty CG; Signal M; Shaw G; Chase JG (2017)
      Continuous glucose monitoring (CGM) devices, with their 1–5 min measurement interval, allow blood glucose dynamics to be captured more frequently and less invasively than traditional measures of blood glucose concentration ...
    • Accuracy of approximate methods of uncertainty propagation in seismic loss estimation 

      Bradley, B.A.; Lee, D.S. (University of Canterbury. Civil and Natural Resources EngineeringUniversity of Canterbury. Mathematics and Statistics, 2010)
      In this paper the efficacy of an approximate method of uncertainty propagation, known as the first-order second-moment (FOSM) method, for use in seismic loss estimation is investigated. The governing probabilistic equations ...
    • Active insulin infusion using optimal and derivative weighted control 

      Lam, Z.; Hwang, K.S.; Lee, J.Y.; Chase, J.G.; Wake, G.C. (University of Canterbury. Mathematics and Statistics.University of Canterbury. Mechanical Engineering., 2002)
      Close control of blood glucose levels significantly reduces vascular complications in Type I diabetes. A control method for the automation of insulin infusion that utilizes emerging technologies in blood glucose biosensors ...
    • Adaptive bolus-based targeted glucose regulation of hyperglycaemia in critical care 

      Chase, J.G.; Shaw, G.M.; Lin, J.; Doran, C.V.; Hann, C.E.; Robertson, M.B.; Browne, P.M.; Lotz, T.; Wake, G.C.; Broughton, R. (University of Canterbury. Mechanical Engineering., 2005)
      Critically ill patients are often hyperglycemic and extremely diverse in their dynamics. Consequently, fixed protocols and sliding scales can result in error and poor control. A two-compartment glucose-insulin system ...
    • An adaptive continuum/discrete crack approach for meshfree particle methods 

      Rabczuk, T.; Belytschko, T. (University of Canterbury. Mechanical Engineering., 2003)
      A coupled continuum/discrete crack model for strain softening materials is implemented in a meshfree particle code. A coupled damage plasticity constitutive law is applied until a certain strain based threshold value - ...
    • Adaptive survey designs for sampling rare and clustered populations 

      Brown, J.A.; M. Salehi, M.; Moradi, M.; Panahbehagh, B.; Smith, D.R. (University of Canterbury. Mathematics and Statistics, 2013)
      Designing an efficient large-area survey is a challenge, especially in environmental science when many populations are rare and clustered. Adaptive and unequal probability sampling designs are appealing when populations ...
    • After the quake 

      Milke, M. (University of Canterbury. Civil and Natural Resources Engineering, 2012)
      The 1995 book, “Wellington after the quake: the challenge of rebuilding cities”, is reviewed in light of the 2010/2011 Canterbury, New Zealand, earthquakes. Lessons are drawn related to the difficulties of recovery of ...
    • An algorithm for constructing a k-tree for a k-connected matroid 

      Brettell, N.; Semple, C. (University of Canterbury. Mathematics and Statistics, 2015)
      For a k-connected matroid M, Clark and Whittle showed there is a tree that displays, up to a natural equivalence, all non-trivial k-separations of M. In this paper, we present an algorithm for con- structing such a tree, ...
    • Algorithmic Aspects of tree amalgamation 

      Steel, M.; Bocker, S.; Dress, A.W.M. (University of Canterbury. Mathematics and Statistics., 2000)
      The amalgamation of leaf-labelled trees into a single (super)tree that "displays" each of the input trees is an important problem in classification. We discuss various approaches to this problem and show that a simple ...
    • Algorithmic Processing of Pressure Waveforms to Facilitate Estimation of Cardiac Elastance 

      Stevenson, D.; Revie, J.A.; Chase, J.G.; Hann, C.E.; Shaw, G.M.; Lambermont, B.; Ghuysen, A.; Kolh, P.; Desaive, T. (University of Canterbury. Electrical and Computer EngineeringUniversity of Canterbury. Mechanical Engineering, 2012)
      Background: Cardiac elastances are highly invasive to measure directly, but are clinically useful due to the amount of information embedded in them. Information about the cardiac elastance, which can be used to estimate ...
    • Anabelian geometry and descent obstructions on moduli spaces 

      Patrikis S; Voloch JF; Zarhin YG (MATHEMATICAL SCIENCE PUBL, 2016)
      We study the section conjecture of anabelian geometry and the sufficiency of the finite descent obstruction to the Hasse principle for the moduli spaces of principally polarized abelian varieties and of curves over number ...
    • Analysing the effects of cold, normal, and warm digits on transmittance pulse oximetry 

      Khan, M.; Pretty, C.G.; Amies, A.C.; Elliott, R.; Chiew, Y.S.; Shaw, G.M.; Chase, J.G. (University of Canterbury. Mechanical Engineering, 2016)
      Non-invasive estimation of arterial oxygen saturation (SpO2) and heart rate using pulse oximeters is widely used in hospitals. Pulse oximeters rely on photoplethysmographic (PPG) signals from a peripherally placed optical ...