177 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kwame Nkrumah UniversityZM4 papers
- Stellenbosch UniversityZA3 papers
- Heriot-Watt UniversityGB2 papers
- Komfo Anokye Teaching HospitalGH2 papers
- Kumasi Centre for Collaborative Research in Tropical MedicineGH2 papers
- Maxwell Institute for Mathematical SciencesGB2 papers
- University of Maryland, College ParkUS2 papers
- University of ZurichCH2 papers
- Accra Institute of TechnologyGH1 paper
- African Institute for Mathematical SciencesZA1 paper
- African Institute for Mathematical Sciences GhanaGH1 paper
- Airlangga UniversityID1 paper
30 papers
Using Machine Learning to Enhance Hyperparameter Optimization in Pandemic Modeling: Case study of COVID-19 Dynamics in Ghana
Thomas Izgin, Andreas Meister, Isaac Azure
In this study, five distinct COVID-19 models developed in different countries, each designed to reflect the prevailing epidemiological condition at the time of formulation, are exa…
Evaluation of Conversational Agents: Understanding Culture, Context and Environment in Emotion Detection
Martha Teiko Teye, Yaw Marfo Missah, Emmanuel Ahene +2
Valuable decisions and highly prioritized analysis now depend on applications such as facial biometrics, social media photo tagging, and human robots interactions. However, the abi…
Conformal PM2.5 Mapping Under Spatial Covariate Shift: Satellite-Reanalysis Fusion for Africa's Green Industrial Transition
Yaw Osei Adjei, Davis Opoku, Ephraim Abotsi +5
Africa's green industrialization imperative demands reliable infrastructure for monitoring air quality. We present a satellite-reanalysis PM2.5 fusion system trained on 2,068,901 r…
A Parametric, Geometry-Aware Residential Construction Cost Estimation Model for Ghana: Design, Validation, and the "Completeness Gap" in Informal Contractor Quotes
Emmanuel Apaaboah, Bernard Opoku, the GhanaHousePlanner Research Team
Ghana faces a residential housing deficit of two million units. A key driver of project failure is the "completeness gap", a systematic discrepancy between informal contractor quot…
The Ghana Radio Astronomy Observatory
Emmanuel Proven-Adzri, Nia Imara, Theophilus Ansah-Narh +7
The Ghana Radio Astronomy Observatory (GRAO) marks a pivotal advance in African radio astronomy through the successful transformation of a decommissioned 32 m satellite communicati…
A Meta-Cognitive Swarm Intelligence Framework for Resilient UAV Navigation in GPS-Denied and Cluttered Environments
Mathias Mankoe, Fuqiang Lu, Hualing Bi +1
Autonomous navigation of UAV swarms in perceptually-degraded environments, where GPS is unavailable and terrain is densely cluttered, presents a critical bottleneck for real-world…
Semantic Superiority vs. Forensic Efficiency: A Comparative Analysis of Deep Learning and Psycholinguistics for Business Email Compromise Detection
Yaw Osei Adjei, Frederick Ayivor
Business Email Compromise (BEC) is a high-impact social engineering threat with extreme operational asymmetry: false negatives can trigger large financial losses, while false posit…
Large Kernel MedNeXt for Breast Tumor Segmentation and Self-Normalizing Network for pCR Classification in Magnetic Resonance Images
Toufiq Musah
Accurate breast tumor segmentation in dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) is important for downstream tasks such as pathological complete response (pCR)…
Mapping The Invisible Internet: Framework and Dataset
Siddique Abubakr Muntaka, Jacques Bou Abdo, Kemi Akanbi +4
This article describes a novel dataset that maps the network layer of the Invisible Internet Project (I2P). The data was collected using SWARM-I2P framework, which deployed I2P rou…
Automated Segmentation of Ischemic Stroke Lesions in Non-Contrast Computed Tomography Images for Enhanced Treatment and Prognosis
Toufiq Musah, Prince Ebenezer Adjei, Kojo Obed Otoo
Stroke is the second leading cause of death worldwide, and is increasingly prevalent in low- and middle-income countries (LMICs). Timely interventions can significantly influence s…
The unrealized potential of agroforestry for an emissions-intensive agricultural commodity
Alexander Becker, Jan D. Wegner, Evans Dawoe +7
Reconciling agricultural production with climate-change mitigation is a formidable sustainability problem. Retaining trees in agricultural systems is one proposed solution, but the…
Modelling the dynamics of online food delivery services on the spread of food-borne diseases
Emmanuel Addai, Delfim F. M. Torres, Zalia Abdul-Hamid +2
We propose and analyze a deterministic mathematical model for the transmission of food-borne diseases in a population consisting of humans and flies. We employ the Caputo operator…
Quantum Effects of Solitons in the Self-Dual Impurity Model
I. Takyi, H. Weigel
We compute the vacuum polarization energies (VPE) of solitons in a self-dual impurity model in which the soliton profiles take the shape of a separated kink-antikink pair. Classica…
Kink Collision in the Noncanonical Model: A Model with Localized Inner Structures
I. Takyi, S. Gyampoh, B. Barnes +2
We study collisions of kinks in the one-space and one-time dimensional noncanonical nonintegrable scalar model. We examine the energy density of the kink, and we find that,…
Fractional Optimal Control Model of SARS-CoV-2 (COVID-19) Disease in Ghana
Samuel Okyere, Joseph Ackora-Prah, Kwaku Forkuoh Darkwah +2
Research focus on optimal control problems brought on by fractional differential equations has been extensively applied in practice. However, because they are still open-ended and…
A model of COVID-19 pandemic evolution in African countries
Kossi Amouzouvi, Kétévi A. Assamagan, Somiéalo Azote +14
We studied the COVID-19 pandemic evolution in selected African countries. For each country considered, we modeled simultaneously the data of the active, recovered and death cases.…
Quality at a Glance: An Audit of Web-Crawled Multilingual Datasets
Julia Kreutzer, Isaac Caswell, Lisa Wang +49
With the success of large-scale pre-training and multilingual modeling in Natural Language Processing (NLP), recent years have seen a proliferation of large, web-mined text dataset…
Chiral Soliton Models and Nucleon Structure Functions
Herbert Weigel, Ishmael Takyi
We outline and review the computations of polarized and unpolarized nucleon structure functions within the bosonized Nambu-Jona-Lasinio chiral soliton model. We focus on a consiste…
Quantum Corrections to Solitons in the Model
I. Takyi, M. K. Matfunjwa, H. Weigel
We compute the vacuum polarization energy of kink solitons in the model in one space and one time dimensions. There are three possible field potentials that have eight powe…
Predicting of shear wave velocity using Artificial Neural Networks
Franklin Adjei, Priscilla Afare, Teddy Osae
Shear wave velocity is an important parameter for determining lithology, porosity and the dynamic properties in geo-mechanical studies. However, due to time and cost limitations, s…
Perfect Prishchepov groups
Ihechukwu Chinyere, Bernard Oduoku Bainson
We study cyclically presented groups of type to determine when they are perfect. It turns out that to do so, it is enough to consider the Prishchepov groups, so modu…
Improved propagation models for lte path loss prediction in urban & suburban Ghana
James D. Gadze, Kwame A. Agyekum, Stephen J. Nuagah +1
To maximize the benefits of LTE cellular networks, careful and proper planning is needed. This requires the use of accurate propagation models to quantify the path loss required fo…
Fractional radial-cylindrical diffusivity model for levels of heterogeneity in petroleum reservoirs
George Parker-Lamptey, Peter Amoako-Yirenkyi, Isaac Kwame Dontwi
The generalized Taylor's Formula is used to derive a fractional radial-cylindrical diffusivity model via a fractional conservation of mass in radial geometry in a petroleum reservo…
Performance Evaluation of a Deployed 4G LTE Network
E. T. Tchao, J. D. Gadze, J. O. Agyapong
In Ghana and many countries within Sub-Sahara Africa, Long Term Evolution (LTE) is being considered for use within the sectors of Governance, Energy distribution and transmission,…