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Development of intersubband terahertz lasers using multiple quantum well structures
(Massachusetts Institute of Technology, 1998)
This thesis describes an experimental and theoretical effort in developing intersubband THz lasers using multiple-quantum-well structures. Scarcity of compact solid state sources in this frequency range, and to demonstrate ...
Utility assessment based on individualized patient perspectives
(Massachusetts Institute of Technology, 1998)
The feasibility of using the terminology of the individual patient to capture and express the individual's particular, perhaps unique, value system for healthiness is explored as a means to evaluate the quality of life. ...
Characterizing and recognizing spoken corrections in human-computer dialog
(Massachusetts Institute of Technology, 1998)
Miscommunication in human-computer spoken language systems is unavoidable. Recognition failures on the part of the system necessitate frequent correction attempts by the user. Unfortunately and counterintuitively, users' ...
A database of computer attacks for the evaluation of intrusion detection systems
(Massachusetts Institute of Technology, 1999)
The 1998 DARPA intrusion detection evaluation created the first standard corpus for evaluating computer intrusion detection systems. This corpus was designed to evaluate both false alarm rates and detection rates of intrusion ...
Natural communication with robots
(Massachusetts Institute of Technology, 1994)
Setting language parameters using genetic algorithms
(Massachusetts Institute of Technology, 1992)
Dynamic nanometer alignment for nanofabrication and metrology
(Massachusetts Institute of Technology, 1998)
Future generations of IC fabrication depend in part on continued improvements in lithography. To meet the lithographic challenges posed by 25- nm lithography, a novel through-the-mask, interferometric imaging alignment ...
Mismatch capacity per unit cost
(Massachusetts Institute of Technology, 1999)
The mismatch channel capacity per unit cost represents the maximum number of bits per unit cost that can be transmitted reliably across a channel under receiver mismatch conditions. It's reciprocal is the minimal cost of ...
Automatic target recognition based on collection of evidence
(Massachusetts Institute of Technology, 1999)
The problem of automatically recognizing an object in an image scene is very difficult. This thesis develops an image-based object recognition algorithm in which information from different features is combined using ...
An analysis of cross grain saturation effects in systems of cascaded erbium-doped fiber amplifiers
(Massachusetts Institute of Technology, 1999)
Overview: This work addresses the problem of Cross Gain Saturation effects in Erbium Amplifier Cascades. Chapter 1 provides an interesting historical perspective on lightwave communications. This chapter serves as a primer ...