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Recognition of 3D compressed images and its traffic monitoring applications
(Massachusetts Institute of Technology, 2004)
The need for improved security requires the development of better monitoring systems. These systems must manage large numbers of images sent over communication networks. For example, a high transmission load results when ...
Design automation and analysis of three-dimensional integrated circuits
(Massachusetts Institute of Technology, 2004)
This dissertation concerns the design of circuits and systems for an emerging technology known as three-dimensional integration. By stacking individual components, dice, or whole wafers using a high-density electromechanical ...
The development of novel passive and active photonic-crystal devices
(Massachusetts Institute of Technology, 2004)
Photonic crystals are anticipated to have impact on large-scale photonic integrated circuits by allowing the creation of compact and efficient devices such as waveguides, splitters, microcavity filters, light emitting ...
Thermoelectric properties of Bi₁â‚‹x̳Sbx̳ nanowires and lead salt superlattice nanowires
(Massachusetts Institute of Technology, 2003)
This thesis involves an extensive experimental and theoretical study of the thermoelectric-related transport properties of BilxSbx nanowires, and presents a theoretical framework for predicting the electrical properties ...
Lower bound techniques for data structures
(Massachusetts Institute of Technology, 2008)
We describe new techniques for proving lower bounds on data-structure problems, with the following broad consequences: * the first [omega](lg n) lower bound for any dynamic problem, improving on a bound that had been ...
Convex relaxation methods for graphical models : Lagrangian and maximum entropy approaches
(Massachusetts Institute of Technology, 2008)
Graphical models provide compact representations of complex probability distributions of many random variables through a collection of potential functions defined on small subsets of these variables. This representation ...
Composite variable formulations for express shipment service network design
(Massachusetts Institute of Technology, 2000)
In this thesis, we consider large-scale network design problems, specifically the problem of designing the air network of an express shipment (i.e., overnight) delivery operation. We focus on simultaneously determining the ...
A one-round algorithm for virtually synchronous group communication in wide area networks
(Massachusetts Institute of Technology, 2002)
Group communication services, and especially those that implement Virtual Synchrony semantics, are powerful middleware systems that facilitate the development of fault-tolerant distributed applications. In this thesis, we ...
A numerical approach : broadband technologies for efficient Magnetic Resonance Imaging
(Massachusetts Institute of Technology, 2004)
(cont.) independent receiver coils in parallel or time-axis compression, can be cast as complementary to broadband MRI encoding. This affords broadband non-Fourier MRI with time efficiencies over current fast MRI methods. ...
Property testing : theory and applications
(Massachusetts Institute of Technology, 2003)
(cont.) We show upper and lower bounds for the general problem and for specific partial orders. A few of our intermediate results are of independent interest. 1. If strings with a property form a vector space, adaptive ...