Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 23762395 of 3603

On fantastic narratives: Lewis through the wardrobe into Narnia
(Institute for AfroHellenic Studies, 2007) 
On Huppert's Conjecture for alternating groups of low degrees
(World Scientific, 2015)Bertram Huppert conjectured in the late 1990s that the nonabelian simple groups are determined up to an abelian direct factor by the set of their character degrees. Although the conjecture has been established for various ... 
On legitimacy in impact assessment: an epistemologicallybased conceptualisation
(Elsevier, 2018)Impact assessment (IA) is carried out as an ex ante process to inform decisionmaking. It includes requirements for engagement with stakeholders (including the public) regarding actions proposed by a proponent. A key issue ... 
On maximum likelihood estimation of the longmemory parameter in fractional Gaussian noise
(Taylor & Francis, 2014)Approximate normality and unbiasedness of the maximum likelihood estimate (MLE) of the longmemory parameter H of a fractional Brownian motion hold reasonably well for sample sizes as small as 20 if the mean and scale ... 
On Multi–Laplace Transform for Solving Nonlinear Partial Differential Equations with Mixed Derivatives
(Hindawi Publising Coperation, 2014)A novel approach is proposed to deal with a class of nonlinear partial equations including integer and noninteger order derivative. This class of equations cannot be handled with any other commonly used analytical technique. ... 
On pconvergent operators on Banach lattices
(Springer, 2018)The notion of a pconvergent operator on a Banach space was originally introduced in 1993 by Castillo and Sánchez in the paper entitled “Dunford–Pettislike properties of continuous vector function spaces”. In the present ... 
On positive maps in quantum information
(Springer Verlag, 2014)Using the Grothendieck approach to the tensor product of locally convex spaces, we review a characterization of positive maps as well as Belavkin–Ohya characterization of PPT states. Moreover, within this scheme, a ... 
On quantum statistical mechanics: a study guide
(Hindawi, 2017)We provide an introduction to a study of applications of noncommutative calculus to quantum statistical physics. Centered on noncommutative calculus, we describe the physical concepts and mathematical structures appearing ... 
On quasiuniform box products
(Universidad Politécnica de Valencia, 2017)We revisit the computation of entourage sections of the constant uniformity of the product of countably many copies the Alexandroff onepoint compactification called the Fort space. Furthermore, we define the concept of a ... 
On the asymptotic theory of new bootstrap confidence bounds
(IMS, 2018)We propose a new method, based on sample splitting, for constructing bootstrap confidence bounds for a parameter appearing in the regular smooth function model. It has been demonstrated in the literature, for example, ... 
On the characters of the Sylow psubgroups of untwisted Chevalley groups Yn(pa)
(Cambridge University Press, 2016)Let be a Sylow subgroup of an untwisted Chevalley group of rank defined over where is a power of a prime . We partition the set of irreducible characters of into families indexed by antichains of positive roots of the ... 
On the contamination of membraneelectrode assemblies of water electrolysers based on proton exchange membrane in the course of operation.
(BAS, 2018)The issues of contamination of membraneelectrode assemblies (MEAs) of water electrolysers based on proton exchange membrane (PEM) currently pose a subject for investigation. The analysis of structure and chemical composition ... 
On the effects of pickup iondriven waves on the diffusion tensor of lowenergy electrons in the heliosphere
(IOP Publishing, 2017)The effects of Alfvén cyclotron waves generated due to the formation in the outer heliosphere of pickup ions on the transport coefficients of lowenergy electrons is investigated here. To this end, parallel mean free path ... 
On the fractional Nagumo equation with nonlinear diffusion and convection
(Hindawi Publishing Corporation, 2014)We presented the Nagumo equation using the concept of fractional calculus.With the help of two analytical techniques including the homotopy decomposition method (HDM) and the new development of variational iteration method ... 
On the HamiltonJacobiBellman Equation by the Homotopy Perturbation Method
(Hindawi Publishing Corporation, 2014)Our concern in this paper is to use the homotopy decomposition method to solve the HamiltonJacobiBellman equation (HJB). The approach is obviously extremely well organized and is an influential procedure in obtaining the ... 
On the hamilton–jacobi–bellman equation by the homotopy perturbation method
(Hindawi Publishing Corporation, 2014)Our concern in this paper is to use the homotopy decomposition method to solve the HamiltonJacobiBellman equation (HJB). The approach is obviously extremely well organized and is an influential procedure in obtaining the ... 
On the methanol masers in G9.62+0.20E and G188.95+0.89
(IOP Publishing, 2011)A comparison between the observed light curves of periodic masers in G9.62+0.20E and G188.95+0.89 and the results of a simple collidingwind binary model is made to establish whether the flaring and other timedependent ... 
On the propagation times and energy losses of cosmic rays in the heliosphere
(American Geophysical Union, 2011)We present calculations of the propagation times and energy losses of cosmic rays as they are transported through the heliosphere. By calculating these quantities for a spatially 1D scenario, we benchmark our numerical ... 
On the pulse shape of groundlevel enhancements
(Springer, 2017)We study the temporal intensity profile, or pulse shape, of cosmic ray groundlevel enhancements (GLEs) by calculating the rise (τr) and decay (τd) times for a small subset of all available events. Although these quantities ... 
On the solutions and conservation laws for the Sharma–Tasso–Olver equation
(2014)We study the SharmaTassoOlver equation from the Lie symmetry point of view. We derive the Lie point symmetry generators of the equation and classify them to obtain the optimal system of onedimensional subalgebras of the ...