African University of Science and Technology: Recent submissions
Now showing items 1801-1820 of 4824
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A Fully Automatic Theorem Prover with Human-Style Output
(SpringerJournal of Automated Reasoning, 2016-06-11)This paper describes a program that solves elementary mathematical problems, mostly in metric space theory, and presents solutions that are hard to distinguish from solutions that might be written by human mathematicians.
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Time-domain implementation of an impedance boundary condition with boundary layer correction
(ElsevierJournal of Computational Physics, 2016-06-08)A time-domain boundary condition is derived that accounts for the acoustic impedance of a thin boundary layer over an impedance boundary, based on the asymptotic frequency-domain boundary condition of Brambley [2011, AIAA ...
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Two–dimensional viscoplastic dambreaks
(Journal of Non-Newtonian Fluid Mechanics, 2016-12-01)We report the results of computations for two–dimensional dambreaks of viscoplastic fluid, focusing on the phenomenology of the collapse, the mode of initial failure, and the final shape of the slump. The volume-of-fluid ...
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Decay of the Cosmic Vacuum Energy
(SpringerFestschrift, 2016)In his 2005 review, $\textit{Gravity and the Thermodynamics of Horizons}$, Paddy suggested that a vacuum in thermal equilibrium with a bath of radiation should have a gradually diminishing energy. We work through the ...
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Homological Stability for Spaces of Embedded Surfaces
(Mathematical Sciences PublisherGeometry & Topology, 2016)We study the space of oriented genus $\textit{g}$ subsurfaces of a fixed manifold $\textit{M}$, and in particular its homological properties. We construct a “scanning map” which compares this space to the space of sections ...
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TORSION GALOIS REPRESENTATIONS OVER CM FIELDS AND HECKE ALGEBRAS IN THE DERIVED CATEGORY
(Cambridge University PressForum of Mathematics, Sigma, 2016-07-21)We construct algebras of endomorphisms in the derived category of the cohomology of arithmetic manifolds, which are generated by Hecke operators. We construct Galois representations with coefficients in these Hecke algebras ...
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Higher spins from Nambu-Chern-Simons theory
(SpringerCommunications in Mathematical Physics, 2016)We propose a new theory of higher spin gravity in three spacetime dimensions. This is defined by what we will call a Nambu-Chern-Simons (NCS) action; this is to a Nambu 3-algebra as an ordinary Chern-Simons (CS) action is ...
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A comparative perspective on the evolution of Romance clausal structure
(John Benjamins PublishingDiachronica, 2016-12-19)This article presents a comparative analysis of the diachronic evolution of Romance clausal structure from Classical Latin through to the late medieval period, with particular reference to the Verb Second (V2) property. ...
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Deep Learning without Poor Local Minima
(2016-05-23)In this paper, we prove a conjecture published in 1989 and also partially address an open problem announced at the Conference on Learning Theory (COLT) 2015. For an expected loss function of a deep nonlinear neural network, ...
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Approach to a Simulation Virtual Machine: Object Oriented Implementation of CDEVS and PDEVS
(2009-12-12)In the world today, the size of complex problems and systems has increased, due to the advances in technology and the area of computer design and architecture. Modeling and predicting the behaviour of complex systems ...
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Global Rates of Convergence in Log-Concave Density Estimation
(Institute of Mathematical StatisticsAnnals of Statistics, 2016)The estimation of a log-concave density on $\Bbb R$$^d$ represents a central problem in the area of nonparametric inference under shape constraints. In this paper, we study the performance of log-concave density estimators ...
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Numerical Relativity and High Energy Physics: Recent Developments
(World ScientificInternational Journal of Modern Physics D, 2016-07-15)We review recent progress in the application of numerical relativity techniques to astrophysics and high-energy physics. We focus on recent developments regarding the spin evolution in black hole binaries, high-energy black ...
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Uncertainty Analysis in Simulation for Reservoir Management: Case Study from Niger Delta
(2016-04-13)Uncertainty analysis of flow performance predictions involves identifying significant reservoir parameters impacting the flow response. Uncertainty analysis often requires conducting large number of reservoir simulation ...
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Algorithms for Approximation of Solutions of Equations Involving Nonlinear Monotone-Type and Multi-Valued Mappings
(2015-07-13)It is well know that many physically significant problems in different areas of re- search can be transformed into an equation of the form Au = 0, (0.0.1) where A is a nonlinear monotone operator from a real Banach space ...
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Contributions to Iterative Algorithms for Nonlinear Equations in Banach Spaces
(2012-12-13)• Let H be a real Hilbert space. Let K, F : H → H be bounded, continuous and monotone mappings. Let {un }∞ and {vn }∞ be n=1 n=1 sequences in E defined iteratively from arbitrary u1 , v1 ∈ H by un+1 = un − βn (F un − ...
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Iterative Algorithms for Single-Valued and Multi-Valued Nonexpansive-Type Mappings in Real Lebesgue Spaces
(2015-07-15)Algorithms for single-valued and multi-valued nonexpansive-type mappings have continued to attract a lot of attentions because of their remarkable utility and wide applicability in modern mathematics and other reasearch ...
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Contributions to the Control Theory of Some Partial Functional Integrodifferential Equations In Banach Spaces
(2016-01-15)This thesis is a contribution to Control Theory of some Partial Functional Integrodifferential Equations in Banach spaces. It is made up of two parts: controllability and existence of optimal controls. In the first part, ...
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Pressure-Assisted Fabrication of Organic Light Emitting Devices
(2015-06-15)This dissertation presents an overview of the research work with the above caption. This research is divided into five major sections or parts. Part one deals with interfacial adhesion studies of the layers relevant to ...
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Biodegradation and Recycling of Polyethylene into Composite Building Materials
(2015-07-19)This work presents the results of experimental and theoretical studies of the biodegradation of polyethylene, recycling of polyethylene into strong and tough earth-based composite building materials and the statistical ...
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Implantable Composite Devices for the Localized Treatment of Breast Cancer
(2015-06-15)Current standard of care treatment modalities for early-stage breast cancer typically involve mastectomy or lumpectomy followed by radiation therapy to remove any residual cancer cells. Although mastectomy has a low ...









