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Luiz S. Homem de Mello is a pioneering figure in robotic assembly and automated manufacturing, best known for his foundational work on assembly sequence planning. His key research areas include robotics, artificial intelligence, and mechanical assembly automation. Homem de Mello’s major contribution is the introduction of AND/OR graph representations for assembly plans, first detailed in his 1986 paper (681 citations) and later refined in 1990 (115 citations). This compact representation captures all feasible assembly sequences for a given product, enabling intelligent robots to select optimal courses of action. His work on task sequence planning (1989, 108 citations) and automatic generation of mechanical assembly sequences (1988, 76 citations) further advanced the field, providing algorithms that increase assembly system flexibility and efficiency. Homem de Mello also explored evaluation functions for assembly planning (1989, 26 citations) and applied AI to robotic assembly of large structures like tetrahedral trusses (1992). With over 1,000 cumulative citations, his research remains essential for students and engineers working on robotic manipulation, disassembly, and repair systems, particularly in space-based applications. His legacy lies in transforming assembly planning from a manual, product-specific task into a systematic, AI-driven process.