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Algorithms for the analysis of protein interaction networks
(Massachusetts Institute of Technology, 2012)
In the decade since the human genome project, a major research trend in biology has been towards understanding the cell as a system. This interest has stemmed partly from a deeper appreciation of how important it is to ...
Multi-level acoustic modeling for automatic speech recognition
(Massachusetts Institute of Technology, 2012)
Context-dependent acoustic modeling is commonly used in large-vocabulary Automatic Speech Recognition (ASR) systems as a way to model coarticulatory variations that occur during speech production. Typically, the local ...
Algorithms and lower bounds in the streaming and sparse recovery models
(Massachusetts Institute of Technology, 2012)
In the data stream computation model, input data is given to us sequentially (the data stream), and our goal is to compute or approximate some function or statistic on that data using a sublinear (in both the length of the ...
Singlet exciton fission, a multi-exciton generation process, in organic semiconductor solar cells
(Massachusetts Institute of Technology, 2012)
Organic semiconductor photovoltaics hold the promise of cheap production and low manufacturing setup costs. The highest efficiency seen in research labs, ~10% today, is still too low for production. In this work we explore ...
High quality metamorphic graded buffers with lattice-constants intermediate to GaAs an InP for device applications
(Massachusetts Institute of Technology, 2009)
We have investigated the use of a continuous, linear grading scheme for compositionally-graded metamorphic InxGal-As buffers on GaAs, which can be used as virtual substrates for optical emitters operating at wavelengths > ...
Engineering RNA logic with synthetic splicing ribozymes
(Massachusetts Institute of Technology, 2008)
Reusable components, such as logic gates and code libraries, simplify the design and implementation of electronic circuits and computer programs. The engineering of biological systems would benefit also from reusable ...
Low-power techniques for video decoding
(Massachusetts Institute of Technology, 2009)
The H.264 video coding standard can deliver high compression efficiency at a cost of large complexity and power. The increasing popularity of video capture and playback on portable devices requires that the energy of the ...
Dynamically fighting bugs : prevention, detection and elimination
(Massachusetts Institute of Technology, 2009)
This dissertation presents three test-generation techniques that are used to improve software quality. Each of our techniques targets bugs that are found by different stake-holders: developers, testers, and maintainers. ...
Globally Synchronized Frames for guaranteed Quality-of-Service in shared memory systems
(Massachusetts Institute of Technology, 2009)
Resource contention among concurrent threads on multicore platforms results in greater performance variability of individual threads than traditionally seen with time-multiplexed threads on single-core platforms. This ...
Control of infinite dimensional systems using finite dimensional techniques : a systematic approach
(Massachusetts Institute of Technology, 1990)