81 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- African Institute for Mathematical Sciences GhanaGH4 papers
- University of the WitwatersrandZA3 papers
- African Institute for Mathematical SciencesZA2 papers
- Heriot-Watt UniversityGB2 papers
- Maxwell Institute for Mathematical SciencesGB2 papers
- National Institute for Theoretical PhysicsZA2 papers
- South China Normal UniversityCN2 papers
- Stanford UniversityUS2 papers
- University of California San DiegoUS2 papers
- University of Illinois Urbana-ChampaignUS2 papers
- University of JohannesburgZA2 papers
- University of Southern CaliforniaUS2 papers
44 papers
Bayesian Inference of Nonlinear Malaria Dynamics in Ghana via an Ensemble Markov Chain Monte Carlo Sampler
T. Ansah-Narh, Y. Asare Afrane, J. Bremang Tandoh
Reliable quantification of malaria dynamics in sub-Saharan Africa is hindered by short, noisy, and spatially heterogeneous surveillance records. In Ghana, health-facility data from…
Hilbert space representation for quasi-Hermitian position-deformed Heisenberg algebra and Path integral formulation
Thomas Katsekpor, Latévi M. Lawson, Prince K. Osei +1
Position deformation of a Heisenberg algebra and Hilbert space representation of both maximal length and minimal momentum uncertainties may lead to loss of Hermiticity of some oper…
Density Analysis for coupled forward-backward SDEs with non-Lipschitz drifts and Applications
Rhoss Likibi Pellat, Olivier Menoukeu Pamen
We explore the existence of a continuous marginal law with respect to the Lebesgue measure for each component of the solution to coupled quadratic forward-backward stocha…
Understanding the role of Hubbard corrections in the rhombohedral phase of BaTiO
G. Gebreyesus, Lorenzo Bastonero, Michele Kotiuga +2
We present a first-principles study of the low-temperature rhombohedral phase of BaTiO using Hubbard-corrected density-functional theory. By employing density-functional pertur…
Layer-dependent spin-resolved electronic structure of ferromagnetic triple-layered ruthenate SrRuO
Prosper Ngabonziza, Jonathan D. Denlinger, Alexei V. Fedorov +4
High-resolution angle- and spin-resolved photoemission spectroscopy (ARPES) of the triple-layered ruthenate SrRuO reveals features of the electronic structure that e…
The State of Food Systems Worldwide: Counting Down to 2030
Kate Schneider, Jessica Fanzo, Lawrence Haddad +54
Transforming food systems is essential to bring about a healthier, equitable, sustainable, and resilient future, including achieving global development and sustainability goals. To…
Electronic Structure and Magnetism of the Triple-layered Ruthenate SrRuO
G. Gebreyesus, Prosper Ngabonziza, Jonah Nagura +3
We report electronic band structure calculations for SrRuO that displays both ferromagnetic and metamagnetic behavior. The density functional calculations find t…
Large Large deviations for spatial telecommunication systems: The boolean model
A. K. Boahen, T. Katsekpor, K. Doku-Amponsah
Spatial telecommunication systems have evolved along the years, leading to some concerns that telecommunication companies are facing today. The main inquietude is the ability to pr…
Egocentric Image Captioning for Privacy-Preserved Passive Dietary Intake Monitoring
Jianing Qiu, Frank P. -W. Lo, Xiao Gu +10
Camera-based passive dietary intake monitoring is able to continuously capture the eating episodes of a subject, recording rich visual information, such as the type and volume of f…
Large Deviations and Information theory for Sub-Critical SINR Randon Network Models
E. Sakyi-Yeboah, P. S. Andam, L. Asiedu +1
The article obtains large deviation asymptotic for sub-critical communication networks modelled as signal-interference-noise-ratio(SINR) random networks. To achieve this, we define…
Inclusive education and research through African Network of Women in Astronomy and STEM for GIRLS in Ethiopia initiatives
Mirjana Pović, Vanessa McBride, Priscilla Muheki +11
The African Network of Women in Astronomy and STEM for GIRLS in Ethiopia initiatives have been established with aim to strengthen the participation of girls and women in astronomy…
Large Deviations, Sharron-McMillan-Breiman Theorem for Super-Critical Telecommunication Networks
E. Sakyi-Yeboah, P. S. Andam, L. Asiedu +1
In this article we obtain large deviation asymptotics for supercritical communication networks modelled as signal-interference-noise ratio networks. To do this, we define the empir…
New regional stratigraphic insights from a 3D geological model of the Nasia sub-basin, Ghana, developed for hydrogeological purposes and based on reprocessed B-field data originally collected for mineral exploration
Elikplim Abla Dzikunoo, Giulio Vignoli, Flemming Jørgensen +2
Reprocessing of regional-scale airborne electromagnetic data (AEM) is used to build a 3D geomodel of the Nasia sub-basin. The resulting 3D geomodel integrates all the prior pieces…
Scrambling in Yang-Mills
Robert de Mello Koch, Eunice Gandote, Augustine Larweh Mahu
Acting on operators with a bare dimension the dilatation operator of super Yang-Mills theory defines a 2-local Hamiltonian acting on a graph. Degree…
Launching the VASCO citizen science project
Beatriz Villarroel, Kristiaan Pelckmans, Enrique Solano +25
The Vanishing & Appearing Sources during a Century of Observations (VASCO) project investigates astronomical surveys spanning a time interval of 70 years, searching for unusual and…
Implication of Natal Care and Maternity Leave on Child Morbidity: Evidence from Ghana
Danny Turkson, Joy Kafui Ahiabor
Failure to receive post-natal care within first week of delivery causes a 3% increase in the possibility of Acute Respiratory Infection in children under five. Mothers with unpaid…
Large deviations, asymptotic bounds on the number of positive individuals in a Bernoulli sample via the number of positive pool samples drawn on the bernoulli sample
Kwabena Doku-Amponsah
In this paper we define for a Bernoulli samples the \emph{ empirical infection measure}, which counts the number of positives (infections) in the Bernoulli sample and for the \emph…
Large Deviation Principle for Empirical SINR Measure of Critical Telecommunication Networks
Enoch Sakyi-Yeboah, Charles Kwofie, Kwabena Doku-Amponsah
For a \emph{ powered Poisson process}, we define \emph{Signal-to-Interference-plus-Noise Ratio}(SINR) and thesinr network as a Telecommunication Network. We define the Empirical Me…
Assessing the Performance of the Discrete Generalised Pareto Distribution in Modelling Non-Life Insurance Claims
S. K-B. Dzidzornu, R. Minkah
In this paper, non-life insurance claims were modelled under the three parameter discrete generalised Pareto distribution. Data from the National Insurance Commission of Ghana on r…
Induced Ferromagnetism in bilayer Hexagonal Boron Nitride (h-BN) on vacancy defects at B and N sites
B. Chettri, P. K. Patra, Tuan V. Vu +6
We investigated the electronic and optical properties of bilayer AB stacked Boron and Nitrogen vacancies in hexagonal Boron Nitride (h-BN) using density functional theory (DFT). Th…
Holography for Tensor models
Robert de Mello Koch, David Gossman, Nirina Hasina Tahiridimbisoa +1
In this article we explore the holographic duals of tensor models using collective field theory. We develop a description of the gauge invariant variables of the tensor model. This…
Local Large Deviation Principle, Large Deviation Principle and Information theory for the Signal -to- Interference -Plus- Noise Ratio Graph Models
E. Sakyi-Yeboah, L. Asiedu, Kwabena Doku-Amponsah
Given devices space , an intensity measure , a transition kernel from the space to positive real numbers a path-loss function (which depend…
Optimal Paired Comparison Experiments for Second-Order Interactions
Eric Nyarko
In real life situations often paired comparisons involving alternatives of either full or partial profiles to mitigate cognitive burden are presented. For this situation the proble…
The relative efficiency of time-to-progression and continuous measures of cognition in pre-symptomatic Alzheimer's
Dan Li, Samuel Iddi, Paul S. Aisen +2
Pre-symptomatic (or Preclinical) Alzheimer's Disease is defined by biomarker evidence of fibrillar amyloid beta pathology in the absence of clinical symptoms. Clinical trials in th…