Now showing items 1-20 of 65

    • Three dimensional world construction with LEGO blocks 

      Troncoso, J.; Rogers, C.; McKinnon, Alan E.; Unsworth, Keith (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2004-04)
      In this project a three dimensional virtual world is constructed with the use of a LEGO camera and a set of LEGO blocks. The goal is to design a construction method that is simple enough for middle school-aged children to ...
    • Constrained visualization using the Shepard Interpolation Family 

      Brodlie, K. W.; Asim, M. R.; Unsworth, Keith (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2003-12)
      This paper discusses the problem of visualizing data where there are underlying constraints that must be preserved. For example, we may know that the data is inherently positive. We show how the Modified Quadratic Shepard ...
    • Prediction of lamb tenderness using texture features 

      Chandraratne, Meegalla R.; Samarasinghe, Sandhya; Kulasiri, D.; Frampton, Christopher M.; Bekhit, Alaa E. A.; Bickerstaffe, Roy (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2003-08)
      Meat quality is a subject of growing interest. The meat industry, in response to consumer demand for products of consistent quality, is placing more and more emphasis on quality assurance issues. Tenderness is an important ...
    • Lamb carcass classification system based on computer vision. Part 1, Texture features and discriminant analysis 

      Chandraratne, Meegalla R.; Kulasiri, Gamalathge D.; Frampton, C.; Samarasinghe, Sandhya; Bickerstaffe, Roy (Lincoln University. Applied Computing, Mathematics and Statistics Group.Lincoln University, 2003-08)
      This paper presents a lamb carcass classification system based on image and texture analyses together with multivariate statistical techniques (principal component analysis, cluster analysis and discriminant function ...
    • Solute dispersion by 1D stepped velocity fluctuations 

      Verwoerd, Wynand S.; Kulasiri, Don (Lincoln University. Applied Computing, Mathematics and Statistics Group., 2003-08)
      The effect of fluctuations in the drift velocity on dispersion by a porous medium is investigated. An analytical model is developed which represents the effect of a single discrete step in the velocity of a 1 dimensional ...
    • Determination of fat content in retail ready meat samples using image analysis 

      Chandraratne, M. R.; Samarasinghe, Sandhya; Kulasiri, Don; Isherwood, P.; Bekhit, A. E. D.; Bickerstaffe, R. (Lincoln University. Applied Computing, Mathematics and Statistics Group., 2003-08)
      As a result of constantly growing consumer expectations for meat quality, the meat industry is placing more and more emphasis on quality assurance issues. Fat content in meat influences some important meat quality ...
    • Dynamic modelling of pest control using a pesticide 

      Verwoerd, Wynand S.; Nguyen, Lan K. (Lincoln University. Applied Computing, Mathematics and Statistics Group., 2003-08)
      A general differential equation model of the temporal evolution of a pest population density when subjected to control measures using a pesticide, is investigated. The model is based on logistic growth combined with population ...
    • Scale-dependent dispersivity: a velocity fluctuation model 

      Verwoerd, Wynand S. (Applied Management and Computing DivisionLincoln University, 2003-08)
      In the previous paper, (03/2001) it was shown that the cumulative effect of multiple one-dimensional velocity fluctuations can explain qualitative features of the observed scale dependent dispersivity in natural aquifers, ...
    • Scale dependent solute dispersion in porous media 

      Rajanayaka, Channa N.; Kulasiri Don (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2003-01)
      Scale dependency of solute dispersion in porous media is one of the major striking issues in simulating larger scale aquifers. There are numerous studies dedicated to development of the simulation models that represent h ...
    • Cellular lines: an introduction 

      Geer, P.; McLaughlin, H.; Unsworth, Keith (Lincoln University. Applied Computing, Mathematics and Statistics GroupFrance, 2003)
      This paper provides a definition of a cellular line in a cellular array. It also presents a way of determining whether or not a cell set is a cellular line. Brief statements about existence, uniqueness, and properties of ...
    • An investigation of differences in mature and younger student's use of a computer-based learning package 

      Abell, Walter L.; Gilmore, Helen M.; McLennan, Theresa J.; Sedcole, John R. (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2002-12)
      Older or ""mature"" students are becoming a larger proportion of the student population in tertiary education. This study looked at the difference between mature and younger students' use of, and attitudes towards, a ...
    • Solute dispersion in porous flow with a constant velocity gradient 

      Verwoerd, Wynand S.; Kulasiri, D. (Lincoln University. Applied Computing, Mathematics and Statistics Group, 2002-04)
    • On modelling drying of porous materials: analytical solutions to coupled partial differential equations governing heat and moisture transfer 

      Kulasiri Don; Koloszar Jozsef; Woodhead Ian, M. (Lincoln University. Applied Computing, Mathematics and Statistics Group., 2002-04)
    • Study of fracture properties of wood using high-speed video imaging and neural networks 

      Samarasinghe, Sandhya; Kulasiri, D. (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2002-04)
      In this study, the Duration of Load (DOL) for crack initiation and propagation, crack speed, and load carrying capacity were investigated for three Rates of Loading (ROL) and four sizes of notched wood beams using high-speed ...
    • A hybrid artificial neural networks approach to solve the inverse problem in advection-dispersion models 

      Rajanayaka, Channa N.; Samarasinghe, Sandhya; Kulasiri, D. (Lincoln University. Applied Computing, Mathematics and Statistics Group, 2002-04)
    • Exploration of behaviour of a stochastic transport model using computational experiments 

      Rajanayaka, Channa N.; Kulasiri Don (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, canterbury, 2002-04)
      Fickian assumptions are used in deriving the advection-dispersion equation which models the solute transport in porous media. The hydrodynamic dispersion coefficient defined as a result of these assumptions has been found ...
    • From conceptual model to end user implementation 

      Churcher Clare; McLennan Theresa; McKinnon Alan, E. (Lincoln University. Applied Computing, Mathematics and Statistics Group, 2001-10)
      For a number of reasons many users are responsible for the implementation and maintenance of their own databases. While they may have the technical skills to set up data repositories, many end users lack the analysis skills ...
    • The effects of variable flow velocity on contaminant dispersion in porous flow 

      Verwoerd, Wynand S.; Kulasiri, D. (Lincoln University. Applied Computing, Mathematics and Statistics Group, 2001-07)
    • Investigation of a stochastic inverse method to estimate parameters in groundwater models 

      Rajanayaka, Channa N.; Kulasiri Don (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2001-07)
      Natural systems are heterogeneous and they contain noise due to random inputs, irregular varying coefficients and fluctuations in boundary conditions. In this paper, we model the behaviour of natural systems using stochastic ...
    • Discrete lines and ant algorithms 

      Geer, P.; McLaughlin, H. W.; Unsworth, Keith (Lincoln University. Applied Computing, Mathematics and Statistics GroupLincoln, Canterbury, 2001-03)
      This is a report on work in progress. The focus is on the design of an algorithm used to construct discrete lines. It is intended that this is the first step in applying models of complex adaptive systems to more complex ...