Original Paper

Modeling Seasonal Rainfall Variability and Climate Change Impacts in Calabar Metropolis: An ARIMA Approach

Jerome Godwin Egbe, Richard Antigha, Anyoghe Enya Akwa, Offiong Bassey Effiwatt, Canice Ugbong Anashie

Pages: 26-37 | Published: November 24, 2025

DOI: https://doi.org/10.67571/njeru.2025.022637

Keywords: Calabar Metropolis, Climate Change Impacts, Seasonal Rainfall Patterns, Nigeria, Meteorological Data Analysis, ARIMA Model

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Original Paper

Machine Learning Prediction of the 28-Day Compressive Strength of Ambient-Cured Geopolymer Concrete Using Ensemble Learning Algorithms

Maria Kaka Etete Enoh, Lawrence Emmanuel Sunday

Pages: 74-81 | Published: June 20, 2025

DOI: https://doi.org/10.67571/njeru.2025.017481

Keywords: Geopolymer concrete, compressive strength, machine learning, CatBoost, ensemble learning, ambient curing, fly ash, GGBS

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Original Paper

Impact of the Environmental Noise Level and its Effects on FAD Fm 93.1 Radio Signal Calabar in Cross River State, Nigeria

M. I. Anashie, F. I. Anyasi, F. P. Otosi, G. A. Fischer

Pages: 124-129 | Published: September 8, 2024

DOI: https://doi.org/10.67571/njeru.2024.02124129

Keywords: Wireless Devices, Noise, Radio Signals.

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Original Paper

Comparative Analysis of the effect of using Groundnut Shell and Rice Husk Waste Ashes for Soil Stabilization

Ibiang Ebri Ibiang, Emmanuel Ewa Ekang

Pages: 89-94 | Published: January 2, 2024

DOI: https://doi.org/10.67571/njeru.2024.018994

Keywords: laterite, groundnut shell, rice husk, ash, soil test.

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