Now showing items 1-10 of 98
Evaluating the effect of measurement error in pairs of 3D bearings in point transect sampling estimates of density
(University of St Andrews, 2018-03-27) - Report,
Harbour Seal Decline - vital rates and drivers : Report to Scottish Government MMSS/002/15
(SMRU, 2016-06) - Report,
Numbers of harbour seals (Phoca vitulina) have dramatically declined in several regions of the north and east of Scotland, while numbers have remained stable or have increased in regions on the west coast. For any management ...
Two-dimensional magnetohydrodynamic turbulence in the small magnetic Prandtl number limit
(2012-07-01) - Journal article,
In this paper we introduce a new method for computations of two-dimensional magnetohydrodynamic (MHD) turbulence at low magnetic Prandtl number $\Pra=\nu/\eta$. When $\Pra \ll 1$, the magnetic field dissipates at a scale ...
Maximum likelihood estimation of mark-recapture-recovery models in the presence of continuous covariates
(2013) - Journal article,
We consider mark-recapture-recovery (MRR) data of animals where the model parameters are a function of individual time-varying continuous covariates. For such covariates, the covariate value is unobserved if the corresponding ...
Incomplete contingency tables with censored cells with application to estimating the number of people who inject drugs in Scotland
(2014-04-30) - Journal article,
Estimating the size of hidden or difficult to reach populations is often of interest for economic, sociological or public health reasons. In order to estimate such populations, administrative data lists are often collated ...
A default prior distribution for contingency tables with dependent factor levels
(2014-01) - Journal article,
A default prior distribution is proposed for the Bayesian analysis of contingency tables. The prior is specified to allow for dependence between levels of the factors. Different dependence structures are considered, including ...
Shallow-water vortex equilibria and their stability
(2011-01-01) - Journal article,
We first describe the equilibrium form and stability of steadily-rotating simply-connected vortex patches in the single-layer quasi-geostrophic model of geophysical fluid dynamics. This model, valid for rotating shallow-water ...
Simply-connected vortex-patch shallow-water quasi-equilibria
(2014-03-05) - Journal article,
We examine the form, properties, stability and evolution of simply-connected vortex-patch relative quasi-equilibria in the single-layer ƒ-plane shallow-water model of geophysical fluid dynamics. We examine the effects of ...
Double-observer line transect surveys with Markov-modulated Poisson process models for overdispersed animal availability
(2015-12) - Journal article,
We develop maximum likelihood methods for line transect surveys in which animals go undetected at distance zero, either because they are stochastically unavailable while within view or because they are missed when they are ...
Prioritizing global marine mammal habitats using density maps in place of range maps
(2014-03) - Journal article,
Despite lessons from terrestrial systems, conservation efforts in marine systems continue to focus on identifying priority sites for protection based on high species richness inferred from range maps. Range maps oversimplify ...