The 44th volume of International Journal of Engineering Research in Africa contains articles describing the research results in the fields of materials science, mechanical engineering, applied and computational mechanics, construction materials and technologies, technological processes and materials in the petroleum production, natural resources exploration and environmental engineering, robotics, renewable energy, power engineering and control, production management. The articles will be useful for many engineers as well as for academic teachers and students majoring in these fields of engineering science.

We are glad to present our readers with the 40th volume of International Journal of Engineering Research in Africa. This volume contains articles describing the research results in the fields of materials science, mechanical engineering, power distribution and power control, construction materials and technologies, technological processes in the wastewater treatment and industrial engineering. The articles will be useful for many engineers as well as for academic teachers and students majoring in these fields of engineering science.

The 62nd issue of the journal includes articles that describe the latest research results in materials science, including alloys and composites, solar energy concentrator design, power electronic engineering, building materials and level service analysis in the trading company.

This periodical edition includes peer-reviewed papers based on results of scientific research and engineering solutions in different areas of modern engineering science.

The 50th volume of "International Journal of Engineering Research in Africa" contains peer-reviewed manuscripts reflecting the research results in the fields of materials science, applied mechanics and mechanical engineering. Such issues as Steel Reinforcement, Strain Based Approach, Temperature, Thermo-Physical Properties, Vehicle Dynamics, Water Resources are raised in the volume. The presented scientific papers can be appreciated by the majority of engineers, researchers, academic teachers and students majoring in the fields of engineering science.

This periodical edition includes peer-reviewed papers based on results of scientific research and engineering solutions in different areas of modern engineering science.

Principles of Automation and Control is a concise textbook that explains the basics of robust automation and control strategies. It demonstrates the essentials for meeting consumer needs and ensuring cost-effective manufacturing processes without compromising product quality. With a focus on Industry 4.0, this book explores the principles and applications of automation in industrial systems, emphasizing efficiency, profitability, and flexibility. The thirteen chapters cover automated processes, control theory, computer control devices, industrial automation tools, and practical examples of system automation. The text uses a multidisciplinary approach with simple language to cater to the needs of readers at all levels (learners, beginner engineers, and professionals) seeking to expand their knowledge in automation and control theory and practice. Real-world case studies and empirical findings are also highlighted, which show how automated business solutions can enhance performance.