How does the application of various theoretical frameworks in Operations Management contribute to enhancing organizational efficiency, productivity, and competitiveness? Analyze the principles of operations strategy, process design, capacity planning, inventory management, and supply chain optimization within the context of different theoretical perspectives such as lean manufacturing, Six Sigma, Total Quality Management $($TQM$),$ and Theory of Constraints $($TOC$).$ Explore how these theories influence decision$-$making processes, resource allocation, and performance measurement strategies. Additionally, investigate the role of technology, innovation, and sustainability in shaping contemporary operations management practices and how theoretical insights inform the adoption of new approaches to meet evolving market demands and organizational objectives.