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Constraints on an annihilation signal from a core of constant dark matter density around the Milky Way center with H.E.S.S.
(American Physical Society, 2015)
An annihilation signal of dark matter is searched for from the central region of the Milky Way. Data acquired in dedicated on-off observations of the Galactic center region with H.E.S.S. are analyzed for this purpose. No ...
Effects of host injury on susceptibility of marine reef fishes to ectoparasitic gnathiid isopods
(Springer, 2018)
The importance of the role that parasites play in ecological communities is becoming increasingly apparent. However much about their impact on hosts and thus populations and communities remains poorly understood. A common ...
A comparison of the mathematical knowledge and skills of first-year student cohorts from a transmission and an outcomes-based curriculum
(Taylor & Francis, 2015)
The traditional transmission-based school curriculum in South Africa has been replaced by an outcomes-based school curriculum since 1998. In this article we report on a comparative study on the mathematical knowledge and ...
Factors that affect the accuracy of text–based language identification
(Elsevier, 2012)
The classification accuracy of text-based language identification depends on several factors, including the size of the text fragment to be identified, the amount of training data available, the classification features and ...
Partial and average copulas and association measures
(Institute of Mathematical Statistics, 2015)
For a pair (Y1,Y2) of random variables there exist several measures of association that characterize the dependence between Y1 and Y2 by means of one single value. Classical examples are Pearson’s correlation coefficient, ...
Simple forms and invariant subspaces of H-expansive matrices
(Elsevier, 2015)
In this paper we consider a simple form for pairs of matrices (A,H)(A,H), where H is a real symmetric invertible matrix, and A is a real H -expansive matrix, that is, ATHA−HATHA−H is positive semidefinite. For such pairs ...
Uniform in bandwidth consistency of kernel estimators of the density of mixed data
(Institute of Mathematical Statistics, 2015)
We establish a general uniform in bandwidth consistency result for kernel estimators of the unconditional and conditional joint density of a distribution, which is defined by a mixed discrete and continuous random variable
A discourse model of affect for text-to-speech synthesis
(Pattern recognition association of South Africa (PRASA), 2013)
This paper introduces a model of affect to improve prosody in text-to-speech synthesis. It operates on the discourse level of text to predict the underlying linguistic factors that contribute towards emotional appraisal, ...
Reaction of a fluorine atom with methanol: potential energy surface considerations
(American Chemical Society, 2015)
There are several experimental studies of the F + CH3OH reaction but very little in the way of reliable theory. Here reported are aug-cc-pVQZ CCSD(T) computations for two different reaction pathways. The more exothermic ...
West Africa - a safe haven for frogs? A sub-continental assessment of the Chytrid Fungus (Batrachochytrium dendrobatidis)
(Public Library of Science, 2013)
A putative driver of global amphibian decline is the panzootic chytrid fungus Batrachochytrium dendrobatidis (Bd). While Bd
has been documented across continental Africa, its distribution in West Africa remains ambiguous. ...