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Propagation networks : a flexible and expressive substrate for computation
(Massachusetts Institute of Technology, 2009)
In this dissertation I propose a shift in the foundations of computation. Modem programming systems are not expressive enough. The traditional image of a single computer that has global effects on a large memory is too ...
Coordinating construction by a distributed multi-robot system
(Massachusetts Institute of Technology, 2010)
This thesis presents a decentralized algorithm for the coordinated assembly of 3D objects that consist of multiple types of parts, using a networked team of robots. We describe the algorithm and analyze its stability and ...
Efficient superconducting-nanowire single-photon detectors and their applications in quantum optics
(Massachusetts Institute of Technology, 2011)
Superconducting-nanowire single-photon detectors (SNSPDs) are an emerging technology for infrared photon counting and detection. Their advantages include good device efficiency, fast operating speed, low dark-count rate, ...
Design and applications of a secure and decentralized Distributed Hash Table
(Massachusetts Institute of Technology, 2011)
Distributed Hash Tables (DHTs) are a powerful building block for highly scalable decentralized systems. They route requests over a structured overlay network to the node responsible for a given key. DHTs are subject to the ...
HAsim : cycle-accurate multicore performance models on FPGAs
(Massachusetts Institute of Technology, 2011)
The goal of this project is to improve computer architecture by accelerating cycle-accurate performance modeling of multicore processors using FPGAs. Contributions include a distributed technique controlling simulation on ...
Ultrafast nonlinear optical properties of passive and active semiconductor devices
(Massachusetts Institute of Technology, 2011)
Nonlinear optical properties and ultrafast carrier dynamics of slab-coupled optical waveguide amplifiers, silicon nanowaveguides, and III-V semiconductor saturable Bragg reflectors are studied. The limits imposed by two ...
Memory abstractions for parallel programming
(Massachusetts Institute of Technology, 2012)
A memory abstraction is an abstraction layer between the program execution and the memory that provides a different "view" of a memory location depending on the execution context in which the memory access is made. Properly ...
Crowd-supervised training of spoken language systems
(Massachusetts Institute of Technology, 2012)
Spoken language systems are often deployed with static speech recognizers. Only rarely are parameters in the underlying language, lexical, or acoustic models updated on-the-fly. In the few instances where parameters are ...
High repetition rate fiber and integrated waveguide femtosecond lasers
(Massachusetts Institute of Technology, 2012)
Femtosecond lasers and the development of frequency combs have revolutionized multiple fields like metrology, spectroscopy, medical diagnostics and optical communications. However, to enable wider adoption of the technology ...
First-passage-time problems in time-aware networks
(Massachusetts Institute of Technology, 2012)
First passage time or the first time that a stochastic process crosses a boundary is a random variable whose probability distribution is sought in engineering, statistics, finance, and other disciplines. The probability ...