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Tritium retention in nuclear graphite, system-level transport, and management strategies for the fluoride-salt-cooled high-temperature reactor
(Massachusetts Institute of Technology, 2021)
Advanced reactor concepts which use a lithium- or beryllium-bearing primary salt coolant will require technical solutions to mitigate the environmental release of tritium. One such design is the Fluoride-Salt-Cooled ...
Translational design computation
(Massachusetts Institute of Technology, 2021)
Synergetic tensions have evolved the dichotomy between the physical and digital design domains into a symbiotic unity. New capabilities in digital fabrication give rise to sophisticated tools of computational design, while ...
Technology-assisted coaching : a system for Children's literacy learning
(Massachusetts Institute of Technology, 2021)
Children learn best when knowledgeable adults support their learning process. Yet many learning technologies have not yet incorporated this vital social dimension. In response, we develop a technology-assisted coaching ...
A model for the dig-in instability in serial sectioning and iterative orthogonal cutting
(Massachusetts Institute of Technology, 2021)
Microtome serial sectioning is a key part of building brain maps of neurological tissue, which are made by serially cutting resin-embedded brain tissue into thin sections, followed by imaging on an electron microscope; ...
Affordable autonomous lightweight personal mobility
(Massachusetts Institute of Technology, 2021)
Self-driving cars and micro-mobility services are among the most important trends in the mobility landscape. While robo-taxi services are still in the pilot phase, residents in many cities today are adopting micro-mobility ...
Diagnosing the variability in temperature and velocity in the Middle Atlantic Bight
(Massachusetts Institute of Technology, 2021)
Observations of hydrographic and dynamical properties on the Middle Atlantic Bight shelf document strong variability at time scales spanning events that last a few days to century long trends. This thesis studies individual ...
Distribution, growth, and transport of larval fishes and implications for population dynamics
(Massachusetts Institute of Technology, 2021)
The early life stages of marine fishes play a critical role in population dynamics, largely due to their high abundance, high mortality, and ease of transport in ocean currents. This dissertation demonstrates the value of ...
Essays on physician innovation and practice style in healthcare markets
(Massachusetts Institute of Technology, 2021)
This thesis consists of three chapters on technological innovation, diffusion, and practice style among physicians. The first chapter investigates the effect of age on a surgeon's propensity to use new medical procedures. ...
Structural design and proof of hierarchical cache-coherence protocols
(Massachusetts Institute of Technology, 2021)
Cache-coherence protocols have been one of the greatest correctness challenges of the hardware world. A memory subsystem usually consists of several caches and the main memory, and a cache-coherence protocol defined in ...
Hierarchical abstractions for model-based visual navigation
(Massachusetts Institute of Technology, 2021)
In this thesis, we explore hierarchical map representations that improve autonomous vision-based navigation. Challenged with the task of navigating in an unknown environment, an autonomous agent must perceive the environment ...