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 64th volume of the journal represents the research results of mechanical properties and delamination mode of a carbon-fibre-reinforced polymer composite, experimental and numerical studies of viscoelastic behaviour of bituminous mixture with a high rate of reclaimed asphalt pavement, optimisation of energy consumption for a synthetic ammonia's production, modelling of heat processes in the systems that use solar energy and energy management in a related microgrid. There are articles devoted to image processing for automatic navigation technology in agricultural machines and the development of a hybrid artificial Intelligence-based system for supporting the eco-industrialisation of complex manufacturing processes. The volume will be helpful to specialists in machinery, construction, thermal engineering, usage of solar energy, renewable energetics and industrial automation.

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

This journal's issue includes articles that describe the latest research results in alloy metallurgy, building materials and construction technologies including building seismic provision and results of analytical modelling of mechanical properties of shrink-fitted thick-walled cylinders and nose landing gear for Boeing 777. There is also analysed a hybrid system solar chimney-air soil heat exchanger for natural ventilation and modified particle swarm optimisation for maximum power point tracking for solar photovoltaic systems and presented mathematical modelling of agricultural insurance pricing in Morocco. This volume will be helpful to many engineers in machinery, manufacturing, energy industry and construction.

We present the 53rd volume of the "International Journal of Engineering Research in Africa" to our readers. This volume contains the articles reflecting the research results in the fields of structural alloys, applied mechanics and mechanical engineering, assessment of the potential efficiency of use the cleaner electricity generation, materials and technologies in construction, biofuel production and chemical treatment of the industrial wastewater, remote sensing, and industrial engineering. The articles will be useful for many engineers as well as for academic teachers and students majoring in the mentioned fields of engineering science.

This book is the proceeding of the International Conference on Sustainable Engineering Development and Technological Innovation (ICSEDTI 2022) that was successfully held on 11-13 October 2022 using an hybrid platform. The conference is themed “Sustainable empowerment of innovative solutions through the development of integrated scientific researches to enhance the advanced technological world”, which represents our belief of how the sustainability is essential in our approach to solve problems through technological innovation. A total of 56 papers were submitted and presented within the sessions of the conference. The papers’ topics revolve around Informatics Technology, Electrical Technology, Marine Technology, Manufacturing System and Technology, Mechanical Engineering, And also Information Industry and Management. In addition to the technical paper presentations, there were also five keynote speeches featured, and eight plenary talks were delivered. Two of the keynote speeches were delivered in person by Professor Selo from Universitas Gajah Mada, Indonesia, and Professor Goib Wiranto from the National Research and Innovation Agency, Indonesia. The rest of the keynote speeches were delivered online by Professor Yvon Kermarrec from IMT Atlantique, France; Professor Ian Gibson from University of Twente, Netherlands; and Dr. Ilham Akbar Habibie from The Association of Indonesian Engineer, Indonesia. It was a great pleasure to work with the technical program committee led by Mr. Hilfi Pardi, who have completed the imperative process of peer-review on the technical papers submitted in this conference. We are also very fortunate to have on our side the excellent organizing committee team of the Faculty of Engineering of UMRAH who work very hard to organize and support the conference. Finally, our appreciation to all the authors who have participated in this conference with their amazing achievements and enthusiasm. We firmly believe that ICSEDTI is a suitable platform for researchers, engineers, and developers who are concerned with sustainability in engineering and technological development. We hope in the coming years ICSEDTI will be better in terms of the organization of the conference, the quantity and the quality of the researches submitted, and most importantly the impact on the sustainability of technological innovation.

Using historical and anthropological analysis, this book examines the changing characteristics of nations globally; nation-building in Tanzania, Uganda, and Zambia; and the history of multi-culturalism in the Global South as an advantage to development in post-colonial conceptions of the nation.