Inventory and Stock Control: Practical stock systems, Various associated costs, Lead time - Types of systems - Inventory Policies, Objective functions - Mathematical Methods of Inventory and applications. Reliability Theory: Replacements and maintenance, discounting, Group replacements - System Reliability and availability - Simple Reliability models. Quality Control: Acceptance sampling for attributes and for variables, operating characteristic and average runlength; Single-Double and sequential plans, Control Charts - their construction and use. Simulation: Simulation Concepts - Generation of uniform variates, generation of Variates from standard distributions; Monte Carlo calculus and variance reduction techniques, Analogue simulation of systems.