Now showing items 1-20 of 213

  • 3D whole-prominence fine structure modeling 

    Gunar, Stanislav; Mackay, Duncan Hendry (2015-04-20) - Journal article
    We present the first 3D whole-prominence fine structure model. The model combines a 3D magnetic field configuration of an entire prominence obtained from nonlinear force-free field simulations, with a detailed description ...
  • 50-Year Anniversary of Papers by Cormack, Jolly and Seber 

    Buckland, Stephen Terrence; Morgan, Byron J T (2016-05) - Journal item
  • Acoustic and foraging behavior of a Baird’s beaked whale, Berardius bairdii, exposed to simulated sonar 

    Stimpert, Alison; De Ruiter, Stacy Lynn; Southall, Brandon; Moretti, David; Falcone, Erin; Goldbogen, Jeremy; Friedlaender, Ari; Schorr, Greg; Calambokidis, John (2014-11-13) - Journal article
    Beaked whales are hypothesized to be particularly sensitive to anthropogenic noise, based on previous strandings and limited experimental and observational data. However, few species have been studied in detail. We describe ...
  • Acoustic sequences in non-human animals : a tutorial review and prospectus 

    Kershenbaum, Arik; Blumstein, Dan; Roch, Marie; Akçay, Çaglar; Backus, Gregory; Bee, Mark A.; Bohn, Kirsten; Cao, Yan; Carter, Gerald; Cäsar, Cristiane; Coen, Michael; De Ruiter, Stacy Lynn; Doyle, Laurance; Edelman, Shimon; Ferrer-i-Cancho, Ramon; Freeberg, Todd M.; Garland, Ellen Clare; Gustison, Morgan; Harley, Heidi E.; Huetz, Chloé; Hughes, Melissa; Bruno, Julia Hyland; Ilany, Amiyaal; Jin, Dezhe Z.; Johnson, Michael; Ju, Chenghui; Karnowski, Jeremy; Lohr, Bernard; Manser, Marta; McCowan, Brenda; Mercado III, Eduardo; Narins, Peter M.; Piel, Alex; Rice, Megan; Salmi, Roberta; Sasahara, Kazutoshi; Sayigh, Laela; Shiu, Yu; Taylor, Charles; Vallejo, Edgar E.; Waller, Sara; Zamora-Gutierrez, Veronica (2014) - Journal article
    Animal acoustic communication often takes the form of complex sequences, made up of multiple distinct acoustic units. Apart from the well-known example of birdsong, other animals such as insects, amphibians,and mammals ...
  • Alfvén wave boundary condition for responsive magnetosphere- ionosphere coupling 

    Wright, A.N.; Russell, A.J.B. (2014-05-01) - Journal article
    The solution of electric fields and currents in a height-resolved ionosphere is traditionally solved as an elliptic equation with Dirichlet or Neumann boundary condition in which the magnetosphere is represented as an ...
  • Analysing mark-recapture-recovery data in the presence of missing covariate data via multiple imputation 

    Worthington, Hannah; King, Ruth; Buckland, Stephen Terrence (2015-03) - Journal article
    We consider mark–recapture–recovery data with additional individual time-varying continuous covariate data. For such data it is common to specify the model parameters, and in particular the survival probabilities, as a ...
  • Assessing quality of spatial models using the structural similarity index and posterior predictive checks 

    Robertson, Colin; Long, Jed Andrew; Nathoo, F.S.; Nelson, T.A.; Plouffe, C.C.F. (2014) - Journal article
    Model assessment is one of the most important aspects of statistical analysis. In geographical analysis, models represent spatial processes, where variability in mapped output results from uncertainty in parameter estimates. ...
  • Assouad type dimensions and homogeneity of fractals 

    Fraser, Jonathan M. (2014-12) - Journal article
    We investigate several aspects of the Assouad dimension and the lower dimension, which together form a natural 'dimension pair'. In particular, we compute these dimensions for certain classes of self-affine sets and ...
  • Attractors of directed graph IFSs that are not standard IFS attractors and their Hausdorff measure 

    Boore, Graeme; Falconer, Kenneth John (2013) - Journal article
    For directed graph iterated function systems (IFSs) defined on R, we prove that a class of 2-vertex directed graph IFSs have attractors that cannot be the attractors of standard (1-vertex directed graph) IFSs, with or ...
  • Automatic presentations and semigroup constructions 

    Cain, Alan J.; Oliver, Graham; Ruskuc, Nik; Thomas, Richard M. (2010-08) - Journal article
    An automatic presentation for a relational structure is, informally, an abstract representation of the elements of that structure by means of a regular language such that the relations can all be recognized by finite ...
  • Automatic presentations for semigroups 

    Cain, Alan James; Oliver, Graham; Ruskuc, Nik; Thomas, Richard M. (2009-11) - Journal article
    This paper applies the concept of FA-presentable structures to semigroups. We give a complete classification of the finitely generated FA-presentable cancellative semigroups: namely, a finitely generated cancellative ...
  • Backward wave cyclotron-maser emission in the auroral magnetosphere 

    Speirs, D. C.; Bingham, R.; Cairns, R. A.; Vorgul, I.; Kellett, B. J.; Phelps, A. D. R.; Ronald, K. (2014-10-07) - Journal article
    In this Letter, we present theory and particle-in-cell simulations describing cyclotron radio emission from Earth's auroral region and similar phenomena in other astrophysical environments. In particular, we find that the ...
  • A balanced approach to modelling rotating stably stratified geophysical flows 

    Dritschel, David Gerard; Viúdez, Alvaro (2003-08-10) - Journal article
    We describe a new approach to modelling three-dimensional rotating stratified flows under the Boussinesq approximation. This approach is based on the explicit conservation of potential vorticity, and exploits the underlying ...
  • A Bayesian approach to fitting Gibbs processes with temporal random effects 

    King, Ruth; Illian, Janine Baerbel; King, Stuart Edward; Nightingale, Glenna Faith; Hendrichsen, Ditte (2012-12) - Journal article
    We consider spatial point pattern data that have been observed repeatedly over a period of time in an inhomogeneous environment. Each spatial point pattern can be regarded as a “snapshot” of the underlying point process ...
  • Bayesian bin distribution inference and mutual information 

    Endres, Dominik Maria; Foldiak, Peter (2005-11) - Journal article
    We present an exact Bayesian treatment of a simple, yet sufficiently general probability distribution model. We consider piecewise-constant distributions' P(X) with uniform (second-order) prior over location of discontinuity ...
  • Bayesian hierarchical modelling of continuous non-negative longitudinal data with a spike at zero : an application to a study of birds visiting gardens in winter 

    Swallow, Benjamin Thomas; Buckland, Stephen Terrence; King, Ruth; Toms, Mike (2015) - Journal article
    The development of methods for dealing with continuous data with a spike at zero has lagged behind those for overdispersed or zero-inflated count data. We consider longitudinal ecological data corresponding to an annual ...
  • Bayesian methods for hierarchical distance sampling models 

    Oedekoven, Cornelia Sabrina; Buckland, Stephen Terrence; MacKenzie, Monique Lea; King, Ruth; Evans, Kristine; Burger, Wes (2014-06-01) - Journal article
    The few distance sampling studies that use Bayesian methods typically consider only line transect sampling with a half-normal detection function. We present a Bayesian approach to analyse distance sampling data applicable ...
  • Bayesian sequential tests of the initial size of a linear pure death process 

    Goudie, I.B.J. (2015-05) - Journal article
    We provide a recursive algorithm for determining the sampling plans of invariant Bayesian sequential tests of the initial size of a linear pure death process of unknown rate. These tests compare favourably with the ...
  • Behind and beyond a theorem on groups related to trivalent graphs 

    Havas, George; Robertson, Edmund F.; Sutherland, Dale C. (2008-12) - Journal article
    In 2006 we completed the proof of a five-part conjecture that was made in 1977 about a family of groups related to trivalent graphs. This family covers all 2-generator, 2-relator groups where one relator specifies that a ...
  • Bending and twisting instabilities of columnar elliptical vortices in a rotating strongly stratified fluid 

    Billant, Paul; Dritschel, David Gerard; Chomaz, Jean-Marc (2006-08-25) - Journal article
    In this paper, we investigate the three-dimensional stability of the Moore-Saffman elliptical vortex in a rotating stratified fluid. By means of an asymptotic analysis for long vertical wavelength perturbations and small ...