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Full-Text Articles in Entire DC Network
Automated Algorithm For The Identification Of Artifacts In Mottled And Noisy Images, Onome Augustine Ugbeme, Eli S. Saber, Wencheng Wu, Kartheek Chandu
Automated Algorithm For The Identification Of Artifacts In Mottled And Noisy Images, Onome Augustine Ugbeme, Eli S. Saber, Wencheng Wu, Kartheek Chandu
Articles
We describe a method for automatically classifying image-quality defects on printed documents. The proposed approach accepts a scanned image where the defect has been localized a priori and performs several appropriate image processing steps to reveal the region of interest. A mask is then created from the exposed region to identify bright outliers. Morphological reconstruction techniques are then applied to emphasize relevant local attributes. The classification of the defects is accomplished via a customized tree classifier that utilizes size or shape attributes at corresponding nodes to yield appropriate binary decisions. Applications of this process include automated/assisted diagnosis and repair of …
The Complexity Of Computing The Size Of An Interval, Lane A. Hemaspaandra, Christopher M. Homan, Sven Kosub, Klaus W. Wagner
The Complexity Of Computing The Size Of An Interval, Lane A. Hemaspaandra, Christopher M. Homan, Sven Kosub, Klaus W. Wagner
Articles
Given a p-order A over a universe of strings (i.e., a transitive, reflexive, antisymmetric relation such that if (x, y) ∈ A then |x| is polynomially bounded by |y|), an interval size function of A returns, for each string x in the universe, the number of strings in the interval between strings b(x) and t(x) (with respect to A), where b(x) and t(x) are functions that are polynomial-time computable in the length of x. By choosing sets of interval size functions based on feasibility requirements for their underlying p-orders, we obtain new characterizations of complexity classes. We prove that the …
The Incorporation Of Atmospheric Variability Into Dirsig, Brian Dobbs
The Incorporation Of Atmospheric Variability Into Dirsig, Brian Dobbs
Theses
The goal of this research can be divided into two main areas. The first is to improve the existing manner in which DIRSIG samples and references the atmosphere. The second is to give DIRSIG the ability to incorporate atmospheric inhomogeneities, as well as the ability to accurately model them. DIRSIG has limitations in how it currently samples the atmosphere. From a geometric standpoint, it does not fully sample the energy which is scattered by the atmosphere towards the sensor (upwelled radiance). There are also other geometric issues which lead to inaccurate modeling results. One significant inaccuracy is the fact that …
Performance Comparison Of Hyperspectral Target Detection Algorithms, Adam Cisz
Performance Comparison Of Hyperspectral Target Detection Algorithms, Adam Cisz
Theses
This thesis performs a performance comparison on existing hyperspectral target detection algorithms. The algorithms chosen for this analysis include multiple adaptive matched filters and the physics based modeling invariant technique. The adaptive matched filter algorithms can be divided into either structured (geometrical) or unstructured (statistical) algorithms. The difference between these two categories is in the manner in which the background is characterized. The target detection procedure includes multiple pre-processing steps that are examined here as well. The effects of atmospheric compensation, dimensionality reduction, background characterization, and target subspace creation are all analyzed in terms of target detection performance. At each …
A Program Of Self-Esteem Development For Deaf Children In Rural Areas, Candi Daviton
A Program Of Self-Esteem Development For Deaf Children In Rural Areas, Candi Daviton
Theses
Deaf children in rural areas often lack the development of self-esteem essential to their overall development of social and academic skills. Deaf children in rural communities generally have low interpersonal communication and leadership skills. Being isolated with no role model for their identification (deafness) could limit their language acquisition and identity development. The purpose of this project is to develop a special curriculum project which would help initiate a program that would enable deaf children in rural areas to develop self-esteem skills through a one week summer camp program focusing on learning about themselves and related essential self-esteem skills through …
Cosmological Constraints From The Sdss Luminous Red Galaxies, Max Tegmark, Daniel J. Eisenstein, Michael Strauss, David H. Weinberg, Michael R. Blanton, Joshua A. Frieman, Masataka Fukugita, James E. Gunn, Andrew J. S. Hamilton, Gillian R. Knapp, Robert C. Nichol, Jeremiah P. Ostriker, Nikhil Padmanabhan, Will J. Percival, David J. Schlegel, Donald P. Schneider, Roman Scoccimarro, Uroš Seljak, Hee-Jong Seo, Molly Swanson, Alexander S. Szalay, Michael S. Vogeley, Jaiyul Yoo, Idit Zehavi, Kevork Abazajian, Scott F. Anderson, James Annis, Neta A. Bahcall, Bruce Bassett, Andreas Berlind, John Brinkman, Tamás Budavari, Francisco Castander, Andrew Connolly, Istvan Csabai, Mamoru Doi, Douglas P. Finkbeiner, Bruce Gillespie, Karl Glazebrook, Gregory S. Hennessy, David W. Hogg, Željko Ivezić, Bhuvnesh Jain, David Johnston, Stephen Kent, Donald Q. Lamb, Brian C. Lee, Huan Lin, Jon Loveday, Robert H. Lupton, Jeffrey A. Munn, Kaike Pan, Changbom Park, John Peoples, Jeffrey R. Pier, Adrian Pope, Michael Richmond, Constance Rockosi, Ryan Scranton, Ravi K. Sheth, Albert Stebbins, Christopher Stoughton, István Szapudi, Douglas L. Tucker, Daniel E. Vanden Berk, Brian Yanny, Donald G. York
Cosmological Constraints From The Sdss Luminous Red Galaxies, Max Tegmark, Daniel J. Eisenstein, Michael Strauss, David H. Weinberg, Michael R. Blanton, Joshua A. Frieman, Masataka Fukugita, James E. Gunn, Andrew J. S. Hamilton, Gillian R. Knapp, Robert C. Nichol, Jeremiah P. Ostriker, Nikhil Padmanabhan, Will J. Percival, David J. Schlegel, Donald P. Schneider, Roman Scoccimarro, Uroš Seljak, Hee-Jong Seo, Molly Swanson, Alexander S. Szalay, Michael S. Vogeley, Jaiyul Yoo, Idit Zehavi, Kevork Abazajian, Scott F. Anderson, James Annis, Neta A. Bahcall, Bruce Bassett, Andreas Berlind, John Brinkman, Tamás Budavari, Francisco Castander, Andrew Connolly, Istvan Csabai, Mamoru Doi, Douglas P. Finkbeiner, Bruce Gillespie, Karl Glazebrook, Gregory S. Hennessy, David W. Hogg, Željko Ivezić, Bhuvnesh Jain, David Johnston, Stephen Kent, Donald Q. Lamb, Brian C. Lee, Huan Lin, Jon Loveday, Robert H. Lupton, Jeffrey A. Munn, Kaike Pan, Changbom Park, John Peoples, Jeffrey R. Pier, Adrian Pope, Michael Richmond, Constance Rockosi, Ryan Scranton, Ravi K. Sheth, Albert Stebbins, Christopher Stoughton, István Szapudi, Douglas L. Tucker, Daniel E. Vanden Berk, Brian Yanny, Donald G. York
Articles
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological parameters from the Wilkinson Microwave Anisotropy Probe (WMAP). We employ a matrix-based power spectrum estimation method using Pseudo-Karhunen-Lo`eve eigenmodes, producing uncorrelated minimum-variance measurements in 20 k-bands of both the clustering power and its anisotropy due to redshift-space distortions, with narrow and well-behaved window functions in the range 0.01 h/Mpc < k < 0.2 h/Mpc. Results from the LRG and main galaxy samples are consistent, with the former providing higher signal-to-noise. Our results are robust to omitting angular and radial density fluctuations and are consistent between different parts of the sky. They provide a striking confirmation of the predicted large-scale CDM power spectrum. Combining only SDSS LRG and WMAP data places robust constraints on many cosmological parameters that complement prior analyses of multiple data sets. The LRGs provide independent cross-checks on m and the baryon fraction in good agreement with WMAP. Within the context of flat CDM models, our LRG measurements complementWMAP by sharpening the constraints on the matter density, the neutrino density and the tensor amplitude by about a factor of two, giving m = 0.24±0.02 (1 ), Pmν < 0.9 eV (95%) and r < 0.3 (95%). Baryon oscillations are clearly detected and provide a robust measurement of the comoving distance to the median survey redshift z = 0.35 independent of curvature and dark energy properties. Within the CDM framework, our power spectrum measurement improves the evidence for spatial flatness, sharpening the curvature constraint tot = 1.05±0.05 from WMAP alone to tot = 1.003±0.010. Assuming tot = 1, the equation of state parameter is constrained to w = −0.94±0.09, indicating the potential for more ambitious future LRG measurements to provide precision tests of the nature of dark energy. All these constraints are essentially independent of scales k > 0.1h/Mpc and associated nonlinear complications, yet agree well with more aggressive published analyses where nonlinear modeling is crucial.
Graphical Microcode Simulator With A Reconfigurable Datapath, Brian Vanburen
Graphical Microcode Simulator With A Reconfigurable Datapath, Brian Vanburen
Theses
Microcode is a symbolic way to simplify control design that allows changing, testing and updating the control unit of processors. By changing the microcode, the same datapath can be used for an entirely different application, such as supporting a completely different instruction set. For these reasons, a majority of control units in modern day processors are microcoded. The object was to investigate and implement a graphical microcode simulator with a reconfigurable datapath and microcode format. By allowing a wide configuration of the datapath, many types of logical processors can be designed and simulated. The resulting implemented simulator is able to …
Practical Implementation And Performance Analysis On Security Of Sensor Networks, Nidhi Verma
Practical Implementation And Performance Analysis On Security Of Sensor Networks, Nidhi Verma
Theses
A wireless sensor network (WSN) is a network made of thousands of sensing elements called as nodes with wireless capabilities. Their application is varied and diverse ranging from military to domestic and household. As the world of self-organizing sensor networks tip to the edge of maximum utilization, their wider deployment is adding pressure on the security front. Powerful laptops and workstations make it more challenging for small sensors. In addition, there are many security challenges in WSN, e.g- confidentiality, authentication, freshness, integrity etc. Contributions of this work are as follows: “Symmetric” security implementation: This thesis work designs a symmetric-key based …
The Acs Virgo Cluster Survey. Xiv. Analysis Of Color-Magnitude Relations In Globular Cluster Systems, Steffen Mieske, Andres Jordan, Patrick Cote
The Acs Virgo Cluster Survey. Xiv. Analysis Of Color-Magnitude Relations In Globular Cluster Systems, Steffen Mieske, Andres Jordan, Patrick Cote
Articles
We examine the correlation between globular cluster (GC) color and magnitude using HST/ACS imaging for a sample of 79 early-type galaxies (−21.7 < MB < −15.2 mag) with accurate surfacebrightness fluctuation distances from the ACS Virgo Cluster Survey. Using the KMM mixture modeling algorithm, we find a highly significant correlation, z ≡ d(g−z) dz = −0.037 ± 0.004, between color and magnitude for the subpopulation of blue GCs in the co-added GC color-magnitude diagram of the three brightest Virgo cluster galaxies (M49, M87 and M60). The sense of the correlation is such that brighter GCs are redder than their fainter counterparts. For the single GC systems of M87 and M60, we find similar correlations; M49 does not appear to show a significant trend. There is no correlation between (g − z) and Mz for GCs belonging to the red subpopulation. The correlation g ≡ d(g−z) dg for the blue subpopulation is much weaker than z. Using Monte Carlo simulations, we attribute this finding to the fact that the blue subpopulation in Mg extends to higher luminosities than does the red subpopulation, which biases the KMM fit results. The highly significant correlation between color and Mz, however, is a real effect: this conclusion is supported by biweight fits to the same color distributions. We identify two environmental dependencies which influence the derived color-magnitude relation: (1) the slope of the color-magnitude relation decreases in significance with decreasing galaxy luminosity, although it remains detectable over the full luminosity range of our sample; and (2) the slope is stronger for GC populations located at smaller galactocentric distances. These characteristics suggest that the observed trend is, at least partially, shaped by external agents. We examine several physical mechanisms that might give rise to the observed color-magnitude relation including: (1) presence of contaminants like super-clusters, stripped galactic nuclei, or ultra-compact dwarfs; (2) accretion of GCs from low-mass galaxies; (3) stochastic effects; (4) the capture of field stars by individual GCs; and (5) GC self-enrichment. Although none of these scenarios offers a fully satisfactory explanation of the observations, we conclude that self-enrichment and field-star capture, or a combination of these processes, offer the most promising means of explaining our observations.
Enhancements Of A Three Dimensional Target Model For Deep Ground Penetrating Radar Systems, Lonnie Parker
Enhancements Of A Three Dimensional Target Model For Deep Ground Penetrating Radar Systems, Lonnie Parker
Theses
Both commercial and military industries incorporate the use of Ground Penetrating Radar (GPR). In the case of the military, a stationary object, such as a bunker or tunnel, can be detected. Even high-resolution, three-dimensional (3D) and twodimensional (2D) imagery of energy reflected by the target and its surrounding environment can be produced. This is accomplished using multiple scene perspectives inherent in advanced Synthetic Aperture Radar (SAR) techniques. Although underground target detection can be successful, the return data, usually suffers a significant degree of signal degradation due to the ground medium and target composition. A valid theoretical target model must account …
Investigation Of Poly[4(5)-Vinylimidazole] Composites And Their Potential As Proton Conductive Membranes, Jinghang Wu
Investigation Of Poly[4(5)-Vinylimidazole] Composites And Their Potential As Proton Conductive Membranes, Jinghang Wu
Theses
In order to demonstrate proton conductivity in an imidazole polymer system, novel composite proton exchange membranes were fabricated by casting films of poly[4(5)-vinylimidazole/vinylimidazolium trifluoromethylsufonylimide] and poly(vinylidene fluoride)], PVdF, from mixed dimethylformamide (DMF) solutions. The phase, composition and morphology of these composites were examined by differential scanning calorimetry (DSC), and hot stage polarized microscopy. Thermal stability was evaluated by thermal gravimetric analysis (TGA). Proton conductivity was in a fuel cell test fixture evaluated at GM Fuel Cell Activities in Honeoye Falls, NY. DSC thermograms were characterized by a crystalline melt for the PVdF component at ∼169°C. All composites displayed a well-form …
Reversible Addition-Fragmentation Chain-Transfer (Raft) Polymerization In Grafting Polymer Chains From Tio2 Nanoparticles, Joseph Lott
Theses
A phosphonate coupling molecule containing a vinyl double bond was synthesized and anchored onto the surface of TiO2 nanoparticles. Diffuse reflectance infra-red (DRIFT) spectroscopy confirmed the presence of the coupling molecule on the particulate surface while thermogravimetric analysis revealed the coupling molecule covered 28% of the surface. Methyl methacrylate was free radically polymerized through the immobilized vinyl bond on the surface in the presence of the reversible additionfragmentation chain-transfer (RAFT) agent 4-cyanopentanoic acid dithiobenzoate using 2,2'-azobisisobutylnitrile (AIBN) as an initiator. DRIFT measurements confirmed the presence of methacrylate groups on the surface. Differential scanning calorimetry detected a weak glass transition for …
Tass Mark Iv Photometric Survey Of The Northern Sky, Thomas Droege, Michael Richmond, Michael Sallman, Robert P. Creager
Tass Mark Iv Photometric Survey Of The Northern Sky, Thomas Droege, Michael Richmond, Michael Sallman, Robert P. Creager
Articles
The Amateur Sky Survey (TASS) is a loose confederation of amateur and professional astronomers. We describe the design and construction of our Mark IV systems, a set of wide-field telescopes with CCD cameras which take simultaneous images in the V and IC passbands. We explain our observational procedures and the pipeline which processes and reduces the images into lists of stellar positions and magnitudes. We have compiled a large database of measurements for stars in the northern celestial hemisphere with V -band magnitudes in the range 7 < V < 13. This paper describes data taken over the four-year period starting November, 2001. One of our results is a catalog of repeated measurements on the Johnson-Cousins system for over 4.3 million stars.
Multi-Variant Analysis Of Real-World Environmental Variables Affecting Image Fading On Outdoor Synthetic Inkjet Substrates, Elizabeth Kline
Multi-Variant Analysis Of Real-World Environmental Variables Affecting Image Fading On Outdoor Synthetic Inkjet Substrates, Elizabeth Kline
Theses
The permanence of large format, outdoor inkjet signs is a concern for many advertisers and companies creating signs that will be displayed for years or months in such an environment. The permanence industry has focused their research on using equipment to simulate these outdoor conditions the prints face to gauge their fading properties. This research took a more direct approach by placing the prints in an actual outdoor environment and tracking the rate of color change (∆Eab), and the environmental variables. A multiple regression analysis of the data was then used to create prediction models and to eliminate environmental variables …
Proteome Analysis Of Pseudomonas Putida Kt2440 Using 2d Gel Electrophoresis And Lc/Esi-Q-Tof Mass Spectrometry, Archana Pandey
Proteome Analysis Of Pseudomonas Putida Kt2440 Using 2d Gel Electrophoresis And Lc/Esi-Q-Tof Mass Spectrometry, Archana Pandey
Theses
The proteome can be defined as the complete set of global protein expression by an organism at any given time. It is this gene expression rather than genome itself that is responsible for most of the reactions taking place within a cell. Tools such as two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) and mass spectroscopy (MS) are often utilized for the analysis and identification of the proteins that constitute the proteome. This thesis provides a general overview of proteomics and describes the underlying processes, mechanisms and technologies associated with modern proteomic analysis with specific emphasis on the use of electrospray ionization time …
Visual Intent Recognition In A Multiple Camera Environment, Matthew Erhard
Visual Intent Recognition In A Multiple Camera Environment, Matthew Erhard
Theses
Activity recognition is an active field of research with many applications for both industrial and home use. Industry might use it as part of a security surveillance system, while home uses could be in applications such as smart rooms and aids for the disabled. This thesis develops one component of a “smart system” that can recognize certain activities related to the subject’s intent, i.e. where subjects concentrate their attention. A visual intent activity recognition system that operates in near real-time is created, based on multiple cameras. To accomplish this, a combination of face detection, facial feature detection, and pose estimation …
A Clustering Approach In Sensor Network Time Synchronization, Ramesh Krishnaram
A Clustering Approach In Sensor Network Time Synchronization, Ramesh Krishnaram
Theses
In recent years tremendous technological advances have led to the development of low-cost sensors capable of data processing activities. These sensor nodes are organized in to a network typically called wireless Sensor Network. WSN's are based on the principle of "Data Fusion" where the data collected from each sensor node is condensed into one meaningful result: Data Fusion is achieved by exchanging messages between the sensors. These messages are time stamped by each sensor node's local clock fuse reading. As noted in various references, Time Synchronization is a common feature used in networking in order to give the nodes a …
Contribution Of Stellar Tidal Disruptions To The X-Ray Luminosity Function Of Active Galaxies, Miloš Milosavljević, David Merritt, Luis C. Ho
Contribution Of Stellar Tidal Disruptions To The X-Ray Luminosity Function Of Active Galaxies, Miloš Milosavljević, David Merritt, Luis C. Ho
Articles
The luminosity function of active galactic nuclei has been measured down to luminosities ∼ 1042 ergs s-1 in the soft and hard X-rays. Some fraction of this activity is associated with the accretion of the material liberated by the tidal disruption of stars by massive black holes. We estimate the contribution to the X-ray luminosity function from the tidal disruption process. While the contribution depends on a number poorly known parameters, it appears that it can account for the majority of X-ray selected AGN with soft or hard Xray luminosities . 1043 - 1044 ergs s-1. If this is correct, …
Prediction Of Job Completion Times And Optimal Overtime Allocation For Satisfying Production Due Dates, Olivia Liu
Prediction Of Job Completion Times And Optimal Overtime Allocation For Satisfying Production Due Dates, Olivia Liu
Theses
One of the important aspects contributing to the competitiveness and success of a manufacturer is the efficient management for timely order delivery. After production orders are scheduled, there arises the need of a support tool to aid in the analysis with the available information, and to support managerial decision making which ultimately aims at on-time delivery. One way in which companies can meet due-dates of orders that are in jeopardy of being late, is to schedule overtime. This research presents a method used for 1) predict the completion times of scheduled jobs; and 2) optimizing overtime allocation when delays are …
Many Are The Deceivers, Cassie Worley
Many Are The Deceivers, Cassie Worley
Theses
This thesis examines the adaptations and disseminations of ancient and modern dominant Western Parables. It investigates both Biblical myths and fairy tales, as they are used as socializing tools, which set standards in Western culture, and prescribe conventions to our children. Within the thesis, themes from Little Red Riding Hood will be extrapolated, and compared to those found in Old Testament tales such as, The Expulsion from Eden, the Deluge, The Ten Plagues, and Exodus. Throughout the thesis, the history and function of the myth and fairy tale will be defined, and questions will be raised regarding the role of …
Robot Rescue, Hui Yu Ruan
Robot Rescue, Hui Yu Ruan
Theses
Recently, it is very common in Asia that people put little toys on their office desks. It doesn’t mean they sometimes have their kids visiting them nor they are not grown up yet. These are toys, which can soothe their stress from work. I am always attracted by toys and also animations designed or directed by many artists and designers. In this fantasy world of toys, there may not be only human beings. As in Hayao Miyazaki’s animation “Spirited Away,” where there was a magic world ruled by a witch; and there was also an old spider man, a frog …
Design Of A 14-Bit Fully Differential Discrete Time Delta-Sigma Modulator, Sumit Kumar Nathany
Design Of A 14-Bit Fully Differential Discrete Time Delta-Sigma Modulator, Sumit Kumar Nathany
Theses
Analog to digital converters play an essential role in modern mixed signal circuit design. Conventional Nyquist-rate converters require analog components that are precise and highly immune to noise and interference. In contrast, oversampling converters can be implemented using simple and high-tolerance analog components. Moreover, sampling at high frequency eliminates the need for abrupt cutoffs in the analog anti-aliasing filters. A noise shaping technique is also used in DS converters in addition to oversampling to achieve a high resolution conversion. A significant advantage of the method is that analog signals are converted using simple and high-tolerance analog circuits, usually a 1-bit …
Tele-Cardiology Sensor Networks For Remote Ecg Monitoring, Meng Jiang
Tele-Cardiology Sensor Networks For Remote Ecg Monitoring, Meng Jiang
Theses
One of today’s most pressing matters in medical care is the response time to patients in need. The scope of this thesis is to suggest a solution that would help reduce response time in emergency situations utilizing wireless sensor networks technology. Wireless sensor network researches have recently gained unprecedented momentum in both industries and academia, especially its potential applications in Emergency Medical Services and Intensive Care Units. The enhanced power efficiency, minimized production cost, condensed physical layout, as well as reduced wired connections, presents a much more proficient and simplified approach to the continuous monitoring of patients’ physiological status. This …
Self-Localization In Ubiquitous Computing Using Sensor Fusion, Jeffrey Zampieron
Self-Localization In Ubiquitous Computing Using Sensor Fusion, Jeffrey Zampieron
Theses
The widespread availability of small and inexpensive mobile computing devices and the desire to connect them at any time in any place has driven the need to develop an accurate means of self-localization. Devices that typically operate outdoors use GPS for localization. However, most mobile computing devices operate not only outdoors but indoors where GPS is typically unavailable. Therefore, other localization techniques must be used. Currently, there are several commercially available indoor localization systems. However, most of these systems rely on specialized hardware which must be installed in the mobile device as well as the building of operation. The deployment …
#13, Michael Frank
#13, Michael Frank
Theses
This thesis is an investigation into the nature of conceptual art and it's existence in an increasingly secluded and digitized cultural. The context of this paper exists within a realm of academia and attempts to provide an intellectual setting for the installation entitled #12. During this examination the dissertation does not limit itself to a particular medium, but rather attempts to analyze imaging and art from a perspective that takes into account the interactive dichotomies and paradoxical notions that, as a society we not only create but define our existence. As an artist I view the act prior to creation …
Social Learning Theory As A Model For Illegitimate Peer-To-Peer Use And The Effects Of Implementing A Legal Music Downloading Service On Peer-To-Peer Music Piracy, Nathan Fisk
Theses
In an attempt to both provide added services to students and help curb the growing problem of music piracy on college campuses, many universities have implemented legal digital music services. The Rochester Institute of Technology (RIT) was one of these universities, where the Cdigix Ctrax service is provided to students. In order to evaluate the effectiveness of such a strategy, Information Technology Services (ITS) at RIT requested the services of Dr. Samuel McQuade, who administered a Webbased survey to all Ctrax users and an equal number of randomly selected non-Ctrax using students at RIT. In total, 447 students responded to …
A New Architecture For Single-Event Upset Detection & Reconfiguration Of Sram-Based Fpgas, Ihesiaba Kamanu
A New Architecture For Single-Event Upset Detection & Reconfiguration Of Sram-Based Fpgas, Ihesiaba Kamanu
Theses
Field Programmable Gate Arrays (FPGA) are used in a variety of applications, ranging from consumer electronics to devices in spacecrafts because of their flexibility in achieving requirements such as low cost, high performance, and fast turnaround. SRAM-based FPGAs can experience single bit flips in the configuration memory due to high-energy neutrons or alpha particles hitting critical nodes in the SRAM cells, by transferring enough energy to effect the change. High energy particles can be emitted by cosmic radiation or traces of radioactive elements in device packaging. The result of this could range from unwanted functional or data modification, data loss …
A New Architecture For Single-Event Upset Detection & Reconfiguration Of Sram-Based Fpgas, Ihesiaba Kamanu
A New Architecture For Single-Event Upset Detection & Reconfiguration Of Sram-Based Fpgas, Ihesiaba Kamanu
Theses
Field Programmable Gate Arrays (FPGA) are used in a variety of applications, ranging from consumer electronics to devices in spacecrafts because of their flexibility in achieving requirements such as low cost, high performance, and fast turnaround. SRAM-based FPGAs can experience single bit flips in the configuration memory due to high-energy neutrons or alpha particles hitting critical nodes in the SRAM cells, by transferring enough energy to effect the change. High energy particles can be emitted by cosmic radiation or traces of radioactive elements in device packaging. The result of this could range from unwanted functional or data modification, data loss …
Spectral Adaptation: A Reason To Use The Wavenumber Scale, Mark D. Fairchild
Spectral Adaptation: A Reason To Use The Wavenumber Scale, Mark D. Fairchild
Presentations and other scholarship
Chromatic adaptation refers to the ability of the human visual system to adjust to the color of the illumination, or other prevailing stimuli, such that perceived object colors vary far less with changes in illumination than would be expected from simple radiometry or colorimetry. Models of chromatic adaptation are generally formulated as extensions of the von Kries hypothesis of some sort of independent gain control mechanisms operating on the three types of cone signals. This paper introduces a new way to model the phenomenon with no requirement for the first stage chromatic processing. This model is referred to as a …
Streamlining Of The State-Dependent Riccati Equation Controller Algorithm For An Embedded Implementation, Sergey Katsev
Streamlining Of The State-Dependent Riccati Equation Controller Algorithm For An Embedded Implementation, Sergey Katsev
Theses
In many practical control problems the dynamics of the plant to be controlled are nonlinear. However, in most cases the controller design is based on a linear approximation of the dynamics. One of the reasons for this is that, in general, nonlinear control design methods are difficult to apply to practical problems. The State Dependent Riccati Equation (SDRE) control approach is a relatively new practical approach to nonlinear control that has the simplicity of the classical Linear Quadratic control method. This approach has been recently applied to control experimental autonomous air vehicles with relative success. To make the SDRE approach …