Chapter 1 - Piecewise Monotonic Fitting for Covid-19 Data Analysis of the United Kingdom during 31-01-2020 to 19-11-2021 (Evangelos E. Vassiliou, Ioannis N. Perdikas, Demetrius E. Davos and Ioannis C. Demetriou).-Chapter 2 - On the Free Boundary Problem for the Low Reynolds Number (Nino Khatiashvili) -- Chapter 3 - Community Detection on Proximity Networks (Gunce Keziban Orman and Onur Akdogan) -- Chapter 4 - A Machine-Learnt Approach to Market Segmentation and Purchase Prediction Using Point-of-Sale (Pos) Data (Iromi R Paranavithana, Thashika D Rupasinghe, and Daniel D Prior) -- Chapter 5 - Feasibility and Benefits of Small Photovoltaic Systems in Ghana (Kingsford Atanga, George Eduful and David Pulfrey) -- Chapter 6 - Design of Multiple Bearing Placements for Brush Cutter Vibration Reduction (Yuki Koike, and Shingo Tsuruoka) -- Chapter 7 - Experimental-Dem Hybrid Approach for Prediction Of Land Slide In Ughelli Sandstone (Adeola Grace Olugbenga, Simon Joseph Antony, Abdulkarim Nasir, Mohammed Umar Garba, Muibat Diekola Yahya) -- Chapter 8 - Extracting the Efficient Model of Cylindrical and Conical Basins from Different Aspect Ratios (Shahadat Hossain Zehad, Sadman Al Faiyaz, Md Redwan Islam, and Dr. -Ing. Irfan Ahmed).