Part 1: Electromechanical System and Engineering Design -- Chapter 1. Finite Element Analysis of Ankle Foot Design Based on Indonesian Anthropometry -- Chapter 2. Automated Disinfection System for Polyethylene Terephthalate Bottles for Bacteria, Fungi and Viruses using UV-C LED Camera -- Chapter 3. Design of the CNC Router Structure for Machining Wood Materials using Reliability - Based Design Optimization Method -- Chapter 4. Development of Intelligent Drone for Cassava Farming -- Chapter 5. Calculation and Optimization of the Two Stage Worm - Gear Reducers Speed Ratio -- Chapter 6. Project-based learning in product design engineering: A case study of external gear pump design -- Part 2: Machining and Manufacturing -- Chapter 7. Tool Wear Analysis on Time-domain and Frequency-domain Data of Machining S45C Using Signal Processing Technique -- Chapter 8. Optimization of the Weight and Size Characteristics of the Power Bracket for Additive Manufacturing Based on Topological Optimization Algorithms -- Chapter 9. Identification and Active Control of the Chatter Phenomenon in the Milling Process Using a Pneumatic Actuator -- Chapter 10. SHS-extrusion of a composite material based on aluminum-magnesium spinel -- Part 3: Fluid Mechanical Engineering and Engineering Thermodynamics -- Chapter 11. Visual Observation of the Vortex Flow from the same Diameter Circular Cylinders which Sandwiched a Partition Disk -- Chapter 12. Experimental Study of the Porous Emitter Installed in a Gas Porous Burner -- Chapter 13. Experimental and Numerical Investigations of effects of Wall Friction and Vibrational Amplitude on Convection Phenomena in Granular Materials under Vertical Vibrations -- Chapter 14. Comparative study of radiative flux from mushroom BLEVE model -- Part 4: Applied Mechanics and Engineering Mechanics -- Chapter 15. Belt Layer Effects on Non-Pneumatic Tire Performance by Finite Element Analysis. etc.