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The biomechanics of knees at high flexion angles before and after Total Knee Arthroplasty
(Massachusetts Institute of Technology, 2004)
Total Knee Arthroplasty (TKA) was initially developed to alleviate pain in the case of severe arthritis of the knee. Restoration of knee motion has been an on going issue for the last decade. Contemporary TKAs appear to ...
Closed-loop, variable-valve-timing control of a controlled-auto-ignition engine
(Massachusetts Institute of Technology, 2004)
The objective of this study was to develop a closed-loop controller for use on a Controlled-Auto- Ignition (CAI) / Spark-Ignition (SI) mixed mode engine equipped with a variable-valve-timing (VVT) mechanism. The controller ...
Optimal capacity adjustment for supply chain control
(Massachusetts Institute of Technology, 2004)
This research attempts to answer the questions involving the time and size of capacity adjustments for better supply chain management. The objective of this research is to analytically determine simple structures to adjust ...
Synthesis and analysis of parallel Kinematic XY flexure mechanisms
(Massachusetts Institute of Technology, 2004)
This thesis presents a family of XY flexure mechanisms with large ranges of motion, first-order decoupled degrees of freedom, and small parasitic error motions. Synthesis is based on an systematic and symmetric layout of ...