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Electrical and Computer Engineering
Electrical and Computer Engineering Faculty Publications and Presentations
- Keyword
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- Computer algorithims (2)
- Logic circuits -- Design and construction (2)
- Quantum computers (2)
- Acupuncture Points (1)
- Androids (1)
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- Backscattering -- Measurement (1)
- Electric Impedance classification (1)
- Explosives -- Detection (1)
- Galvanic Skin Response (1)
- Image processing -- Digital techniques (1)
- Logic synthesis (1)
- Modulation theory (1)
- Molecular electronics (1)
- Nanotechnology (1)
- Noise (1)
- Noise -- Measurement (1)
- Ocean waves (1)
- Optical radar (1)
- Photometry (1)
- Pressure transducers (1)
- Quantum electronics (1)
- Remote sensing -- Aerosols (1)
- Robots -- Control systems -- Design and construction (1)
- Scattering (Physics) -- Measurement (1)
- Scattering -- Physics (1)
- Spectrum analysis (1)
- Systems on a chip -- Computer-aided design (1)
- Terahertz spectroscopy (1)
- Thermoclines (Oceanography) (1)
- Three-dimensional imaging (1)
Articles 1 - 12 of 12
Full-Text Articles in Engineering
Passive Fathometer Processing, Peter Gerstoft, William S. Hodgkiss, Martin Siderius, Chen-Fen Huang, Chris H. Harrison
Passive Fathometer Processing, Peter Gerstoft, William S. Hodgkiss, Martin Siderius, Chen-Fen Huang, Chris H. Harrison
Electrical and Computer Engineering Faculty Publications and Presentations
Ocean acoustic noise can be processed efficiently to extract Green's function information between two receivers. By using noise array-processing techniques, it has been demonstrated that a passive array can be used as a fathometer [Siderius, et al., J. Acoust. Soc. Am. 120, 1315-1323 (2006)]. Here, this approach is derived in both frequency and time domains and the output corresponds to the reflection sequence. From this reflection sequence, it is possible to extract seabed layering. In the ocean waveguide, most of the energy is horizontally propagating, whereas the bottom information is contained in the vertically propagating noise. Extracting the seabed information …
Terahertz Scattering From Granular Material, Lisa M. Zurk, Brian Orlowski, Dale P. Winebrenner, Eric I. Thorsos, Megan R. Leahy-Hoppa, L. Michael Hayden
Terahertz Scattering From Granular Material, Lisa M. Zurk, Brian Orlowski, Dale P. Winebrenner, Eric I. Thorsos, Megan R. Leahy-Hoppa, L. Michael Hayden
Electrical and Computer Engineering Faculty Publications and Presentations
Terahertz (THz) imaging is emerging as a potentially powerful method of detecting explosive devices, even in the presence of occluding materials. However, the characteristic spectral signatures of pure explosive materials may be altered or obscured by electromagnetic scattering caused by their granular nature. This paper presents THz transmission measurements of granular systems representative of explosives and presents results from dense media theory that accurately explain the observed scattering response.
Particle Shape As Revealed By Spectral Depolarization, Donald D. Duncan, Michael Eugene Thomas
Particle Shape As Revealed By Spectral Depolarization, Donald D. Duncan, Michael Eugene Thomas
Electrical and Computer Engineering Faculty Publications and Presentations
Through a series of numerical simulations we explore some scatter effects due to nonspherical particles. Specifically, we examine the link between the aspect ratio of randomly oriented, prolate spheroidal particles and the resulting linear depolarization of the scattered light in the forward and backscatter directions. The particular objective is to detect the presence of randomly oriented particles that have a systematic size and aspect ratio. Calculations show that the spectral behavior of the linear depolarization reveals the aspect ratio of the scattering particles. The concept is demonstrated using the size, shape, and refractive index of the spore form of Bacillus …
Nature-Inspired Interconnects For Self-Assembled Large-Scale Network-On-Chip Designs, Christof Teuscher
Nature-Inspired Interconnects For Self-Assembled Large-Scale Network-On-Chip Designs, Christof Teuscher
Electrical and Computer Engineering Faculty Publications and Presentations
Future nanoscale electronics built up from an Avogadro number of components need efficient, highly scalable, and robust means of communication in order to be competitive with traditional silicon approaches. In recent years, the networks-on-chip (NoC) paradigm emerged as a promising solution to interconnect challenges in silicon-based electronics. Current NoC architectures are either highly regular or fully customized, both of which represent implausible assumptions for emerging bottom-up self-assembled molecular electronics that are generally assumed to have a high degree of irregularity and imperfection. Here, we pragmatically and experimentally investigate important design tradeoffs and properties of an irregular, abstract, yet physically plausible …
Non-Laser-Based Scanner For Three-Dimensional Digitization Of Historical Artifacts, Donald D. Duncan, Daniel V. Hahn, Kevin C. Baldwin
Non-Laser-Based Scanner For Three-Dimensional Digitization Of Historical Artifacts, Donald D. Duncan, Daniel V. Hahn, Kevin C. Baldwin
Electrical and Computer Engineering Faculty Publications and Presentations
A 3D scanner, based on incoherent illumination techniques, and associated data-processing algorithms are presented that can be used to scan objects at lateral resolutions ranging from 5 to 100 m (or more) and depth resolutions of approximately 2 m. The scanner was designed with the specific intent to scan cuneiform tablets but can be utilized for other applications. Photometric stereo techniques are used to obtain both a surface normal map and a parameterized model of the object’s bidirectional reflectance distribution function. The normal map is combined with height information, gathered by structured light techniques, to form a consistent 3D surface. …
An Emotional Mimicking Humanoid Biped Robot And Its Quantum Control Based On The Constraint Satisfaction Model, Quay Williams, Scott Bogner, Michael Kelley, Carolina Castillo, Martin Lukac, Dong Hwa Kim, Jeff S. Allen, Mathias I. Sunardi, Sazzad Hossain, Marek Perkowski
An Emotional Mimicking Humanoid Biped Robot And Its Quantum Control Based On The Constraint Satisfaction Model, Quay Williams, Scott Bogner, Michael Kelley, Carolina Castillo, Martin Lukac, Dong Hwa Kim, Jeff S. Allen, Mathias I. Sunardi, Sazzad Hossain, Marek Perkowski
Electrical and Computer Engineering Faculty Publications and Presentations
The paper presents a humanoid robot that responds to human gestures seen by a camera. The behavior of the robot can be completely deterministic as specified by a Finite State Machine that maps the sensor signals to the effector signals. This model is further extended to the constraints-satisfaction based model that links robots vision, motion, emotional behavior and planning. One way of implementing this model is to use adiabatic quantum computer which quadratically speeds-up every constraint problem and will be thus necessary to solve large problems of this type. We propose to use the remotely-connected Orion system by DWAVE Corporation.
Electrical Skin Impedance At Acupuncture Points, Sean Pearson, Agatha P. Colbert, James Mcnames, Meggan Baumgartner, Richard Hammerschlag
Electrical Skin Impedance At Acupuncture Points, Sean Pearson, Agatha P. Colbert, James Mcnames, Meggan Baumgartner, Richard Hammerschlag
Electrical and Computer Engineering Faculty Publications and Presentations
Objective: To test whether electrical skin impedance at each of three acupuncture points (APs) is significantly lower than at nearby sites on the meridian (MP) and off the meridian (NP). Design: Two instruments—Prognos (MedPrevent GmbH, Waldershof, Germany), a constant-current (DC) device, and PT Probe (designed for this study), a 100-Hz sinusoidal-current (AC) device—were used to record electrical impedance at three APs (right Gallbladder 14, right Pericardium 8, and left Triple Energizer 1), and two control sites for each AP. Each AP, MP, and NP was measured four times in random order with each device. Setting: The study was conducted over …
Spontaneous Mode Locking In Mixed-Broadened Laser Oscillators, Pitak Chenkosol, Lee W. Casperson
Spontaneous Mode Locking In Mixed-Broadened Laser Oscillators, Pitak Chenkosol, Lee W. Casperson
Electrical and Computer Engineering Faculty Publications and Presentations
A theoretical model is reported for spontaneous mode locking in mixed-broadened laser oscillators. Experimental observations of this effect have been available for many years, but no rigorous interpretation has been given. Numerical calculations emphasize the case of a high-gain xenon laser, for which extensive experimental data have been published. Complex pulsation characteristics are observed as the cavity length and pumping rate are varied, and the theoretical results are in good agreement with the experimental data.
Effects Of Ocean Thermocline Variability On Noncoherent Underwater Acoustic Communications, Martin Siderius, Michael B. Porter, Paul Hursky, Vincent Mcdonald
Effects Of Ocean Thermocline Variability On Noncoherent Underwater Acoustic Communications, Martin Siderius, Michael B. Porter, Paul Hursky, Vincent Mcdonald
Electrical and Computer Engineering Faculty Publications and Presentations
The performance of acoustic modems in the ocean is strongly affected by the oceanenvironment. A storm can drive up the ambient noise levels, eliminate a thermocline by wind mixing, and whip up violent waves and thereby break up the acoustic mirror formed by theocean surface. The combined effects of these and other processes on modem performance are not well understood. The authors have been conducting experiments to study these environmental effects on various modulation schemes. Here the focus is on the role of the thermocline on a widely used modulation scheme (frequency-shift keying). Using data from a recent experiment conducted …
Inductive Learning Of Quantum Behaviors, Marek Perkowski, Martin Lukac
Inductive Learning Of Quantum Behaviors, Marek Perkowski, Martin Lukac
Electrical and Computer Engineering Faculty Publications and Presentations
In this paper studied are new concepts of robotic behaviors - deterministic and quantum probabilistic. In contrast to classical circuits, the quantum circuit can realize both of these behaviors. When applied to a robot, a quantum circuit controller realizes what we call quantum robot behaviors. We use automated methods to synthesize quantum behaviors (circuits) from the examples (examples are cares of the quantum truth table). The don’t knows (minterms not given as examples) are then converted not only to deterministic cares as in the classical learning, but also to output values generated with various probabilities. The Occam Razor principle, fundamental …
Search For Universal Ternary Quantum Gate Sets With Exact Minimum Costs, Marek Perkowski, Normen Giesecke, Dong Hwa Kim, Sazzad Hossain
Search For Universal Ternary Quantum Gate Sets With Exact Minimum Costs, Marek Perkowski, Normen Giesecke, Dong Hwa Kim, Sazzad Hossain
Electrical and Computer Engineering Faculty Publications and Presentations
The choice of the best set of universal ternary gates for quantum circuits is an open problem. We create exact minimum cost ternary reversible gates with quantum multiplexers using the method of iterative deepening depth-first search (IDDFS) [25]. Such search is better for small problems than evolutionary algorithms or other search methods. Several new gates that are provably exact minimum cost have been discovered. These gates are next used as library building blocks in the minimization of larger ternary quantum circuits like highly testable GFSOP cascades [15,16] (that generalize ESOP) as well as the wave cascades [24] generalized to ternary …
Realization Of Incompletely Specified Functions In Minimized Reversible Cascades, Marek Perkowski, Manjith Kumar, Bala Iyer, Natalie Metzger, Ying Wang
Realization Of Incompletely Specified Functions In Minimized Reversible Cascades, Marek Perkowski, Manjith Kumar, Bala Iyer, Natalie Metzger, Ying Wang
Electrical and Computer Engineering Faculty Publications and Presentations
There is a need to convert non-reversible functions to their corresponding reversible functions to be realized as reversible cascades. The original MMD (D.M.Miller, D. Maslov, and G.W.Dueck) algorithm for synthesis of reversible functions using cascades of reversible gates [1] can be modified to allow for the inclusion of “don't cares” within the given function's truth table (reversible or irreversible). This was achieved in the approach presented, by first initializing the “don't cares” to binary values, synthesizing the network using the base MMD algorithm, comparing the cost, and iterating to find an implementation with the smallest possible cost. The “don't care” …