Dreijer, Janto F.Herbst, Ben M.Du Preez, Johan A.(BioMed Central, 2013-07)
Background: This paper considers automatic segmentation of the left cardiac ventricle in short axis magnetic
resonance images. Various aspects, such as the presence of papillary muscles near the endocardium border, makes ...
Models of protein evolution currently come in two flavors: generalist and specialist. Generalist models (e.g. PAM, JTT, WAG)
adopt a one-size-fits-all approach, where a single model is estimated from a number of different ...
ENGLISH ABSTRACT: The main objective of our study is enumerating spanning trees (G) and perfect matchings
PM(G) on graphs G and lattices L. We demonstrate two methods of enumerating
spanning trees of any connected ...
ENGLISH ABSTRACT: While the notions of open and closed subsets in a topological space are dual to each
other, they take on another meaning when points and complements are no longer
available. Closure operators have ...
Delport, WayneScheffler, KonradBotha, GordonGravenor, Mike B.Muse, Spencer V.Pond, Sergei L. Kosakovsky(PLOS Computational Biology, 2010-08)
Codon models of evolution have facilitated the interpretation of selective forces operating on genomes. These models,
however, assume a single rate of non-synonymous substitution irrespective of the nature of amino acids ...
Murrell, BenDe Oliveira, TulioSeebregts, ChrisPond, Sergei L. KosakovskyScheffler, Konrad(PLOS Computational Biology, 2011-05)
The evolution of substitutions conferring drug resistance to HIV-1 is both episodic, occurring when patients are on
antiretroviral therapy, and strongly directional, with site-specific resistant residues increasing in ...
ENGLISH ABSTRACT: Different generalized Newtonian fluids (where the normal stresses were neglected) were
considered in this study. Analytical expressions were derived for time independent,
fully developed velocity profiles ...
ENGLISH ABSTRACT: The central objective of our study focuses on torsion points on elliptic curves. The case of
elliptic curves over finite fields is explored up to giving explicit formulae for the cardinality
of the set ...
ENGLISH ABSTRACT: This thesis deals with a function eld analog of the André-Oort conjecture. The (classical) André-Oort conjecture concerns the distribution of special points on Shimura
varieties. In our case we consider ...
ENGLISH ABSTRACT: In Uganda, cattle are an important reservoir of Trypanosoma brucei rhodesiense, a parasite
that causes human African trypanosomiasis or sleeping sickness. We developed mathematical
models to examine the ...
Muller, Simon Adriaan(Stellenbosch : Stellenbosch University, 2013-03)
ENGLISH ABSTRACT: Range images are images that store at each pixel the distance between the sensor and a particular
point in the observed scene, instead of the colour information. They provide a convenient storage
format ...
Markov models of codon substitution are powerful inferential tools for studying biological processes such as natural
selection and preferences in amino acid substitution. The equilibrium character distributions of these ...
ENGLISH ABSTRACT: Stepwise development of a program using refinement ensures that the program
correctly implements its requirements. The specification of a system is
“refined” incrementally to derive an implementable ...