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Helmut Yabar

As seen in: MDPI
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Articles

E-Waste Collection System Optimization via GIS-Based Network Analysis in Yaoundé, Cameroon

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By Yannick Esopere, Helmut Yabar
| Preprints.org
Submitted: 02 February 2026 You are already at the latest version The recent proliferation of electronic waste (E-waste) in developing countries has become a pressing environmental and socio-economic issue, particularly in urban areas dominated by informal waste management practices. The current E-waste collection system in Yaoundé comprises three collection streams: informal, formal, and municipal solid waste collection.
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Impact of Digitalization on Carbon Emissions in Guangdong’s Manufacturing Sector: An Input-Output Perspective

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By Helmut Yabar, Takeshi Mizunoya, Jiao Jingren
| Preprints.org
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Spatial Estimation of Biogas and Compost Potentiality for Sustainable Livestock Manure Management in Bangladesh

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By Zinat Mahal, Helmut Yabar
| Preprints.org
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