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Articles 31 - 60 of 285
Full-Text Articles in Entire DC Network
There Is No 2-(22,8,4) Block Design, Richard Bilous, Clement W.H. Lam, Larry H. Thiel, Ben P.C. Li, G.H. John Van Rees, Stanislaw P. Radziszowski, Wolfgang H. Holzmann, Hadi Kharaghani
There Is No 2-(22,8,4) Block Design, Richard Bilous, Clement W.H. Lam, Larry H. Thiel, Ben P.C. Li, G.H. John Van Rees, Stanislaw P. Radziszowski, Wolfgang H. Holzmann, Hadi Kharaghani
Articles
In this paper we show that a 2-(22, 8, 4) design does not exist. This result was obtained by a computer search.
Modio - Interactive Sound Visualization, Kwon Hyouck Jin
Modio - Interactive Sound Visualization, Kwon Hyouck Jin
Theses
The word “Modio” is a compound word of Motion and Audio, which I coined for this thesis. The intent of this thesis is an interactive installation project that will explore and convert musical elements into visual elements, which will lead to various responses to the change caused by users’ interaction.
A Nexus Of Education, Inspiration, Research And Play, Andrew Phelps
A Nexus Of Education, Inspiration, Research And Play, Andrew Phelps
Presentations and other scholarship
No abstract provided.
Pbs Transition From Analog To Digital Tv Broadcasting: The Human Perspective, Carolyn Colborn
Pbs Transition From Analog To Digital Tv Broadcasting: The Human Perspective, Carolyn Colborn
Theses
The purpose of this project is to examine a subset of Public Broadcasting Service (PBS) stations in how they made their transition to digital broadcasting to: 1. Identify candidate best practices for successfully transitioning from analog to digital broadcasting, 2. Make recommendations on how to educate the viewing audience on adapting, understanding, and utilizing Digital TV (DTV), and 3. Identify possible areas where further research might assist in a better understanding of how to manage change effectively.
Vehicle & Infrastructure Relationships In Hydrogen Transportation Networks: Development Of The H2vision Modeling Tool, Patrick Meyer
Vehicle & Infrastructure Relationships In Hydrogen Transportation Networks: Development Of The H2vision Modeling Tool, Patrick Meyer
Theses
The political instability of acquiring oversea oil resources, the need to reduce greenhouse gas emissions, and the desire for inexpensive energy have recently driven a shift of focus towards hydrogen energy. It has become increasingly evident that there are significant barriers facing the development of a hydrogen-based energy system – a system commonly referred to as the “hydrogen economy”. The small quantities of hydrogen fuel cell vehicles that have been deployed to date are not numerous enough to facilitate the growth of a substantial refueling infrastructure. Additionally, the underdeveloped and extremely limited infrastructure has imposed significant convenience costs upon consumers. …
Green Power In Green Spaces: Policy Options To Promote Renewable Energy Use In U.S. National Parks, Erin Green
Green Power In Green Spaces: Policy Options To Promote Renewable Energy Use In U.S. National Parks, Erin Green
Theses
The National Park Service (NPS) has a mission of sustainability: to conserve its resources for the enjoyment of future generations. The mission implies the use of sustainable technologies. In order to best make use of sustainable energy technologies, the NPS must have an understanding of the most significant barriers inhibiting such technologies’ use. The purpose of this research is to identify barriers to renewable energy technologies (RETs) at U.S. national parks located in the Pacific West Region (PWR), and to develop recommendations for appropriate policy interventions to address the barriers. A survey of energy managers representing the approximately 50 parks …
Trends In The Globular Cluster Luminosity Function Of Early-Type Galaxies, Andrés Jordán, Dean E. Mclaughlin, Patrick Côté, David Merritt, Et Al.
Trends In The Globular Cluster Luminosity Function Of Early-Type Galaxies, Andrés Jordán, Dean E. Mclaughlin, Patrick Côté, David Merritt, Et Al.
Articles
We present results from a study of the globular cluster luminosity function (GCLF) in a sample of 89 earlytype galaxies observed as part of the ACS Virgo Cluster Survey. Using a Gaussian parametrization of the GCLF, we find a highly significant correlation between the GCLF dispersion, , and the galaxy luminosity, MB,gal, in the sense that the GC systems in fainter galaxies have narrower luminosity functions. The GCLF dispersions in the Milky Way and M31 are fully consistent with this trend, implying that the correlation between sigma and galaxy luminosity is more fundamental than older suggestions that GCLF shape is …
Preliminary Finite Element Modeling Of A Piezoelectric Actuated Marine Propulsion Fin, Andrew Streett
Preliminary Finite Element Modeling Of A Piezoelectric Actuated Marine Propulsion Fin, Andrew Streett
Theses
New technologies surrounding composite materials and autonomous underwater vehicle (AUV) design have led to numerous studies involving the marine propulsion for these AUVs. AUVs traditionally are classified as highly efficient, payload capable, and can be utilized as reconnaissance or surveillance vehicles. Undullatory and oscillatory propulsion devices have been conceived to replace the present propulsion technologies, of propellers, with highly maneuverable, efficient, and quiet propulsion systems. Undullatory and oscillatory propulsion has been around for centuries employed by aquatic life, but only recently have the mini-technologies been available to present such propulsion devices economically and with enough materials research as to mimic …
An Auditory Classifier Employing A Wavelet Neural Network Implemented In A Digital Design, Jonathan Hughes
An Auditory Classifier Employing A Wavelet Neural Network Implemented In A Digital Design, Jonathan Hughes
Theses
This thesis addresses the problem of classifying audio as either voice or music. The goal was to solve this problem by means of digital logic circuit, capable of performing the classification in real time. Since digital audio is essentially a discrete non-periodic timeseries, it was necessary to extract features from the audio which are suitable for classification. The discrete wavelet transform combined with a feature extraction method was found to produce such features. The task of classifying these features was found to be best performed by an artificial neural network. Collectively known as a wavelet neural network, the digital logic …
Effect Of Nanostructure On The Thermal Oxidation Of Atomized Iron, Mohit Kumar, Naveen Rawat, Ksv Santhanam
Effect Of Nanostructure On The Thermal Oxidation Of Atomized Iron, Mohit Kumar, Naveen Rawat, Ksv Santhanam
Presentations and other scholarship
The effect of nanostructure on the thermal oxidation of atomized iron has been investigated. Above 500oC atomized iron is oxidized in the presence of air. However, when iron is compacted with multiwalled carbon nanotubes (MWCNT) this oxidation is shifted by more than 100oC. Iron is protected by the nanostructure environment A large number of compositions of atomic ratios of iron and MWCNT have been examined in this study to understand the effect in detail. The effect of nanostructure in the thermal oxidation of iron is interpreted as due to iron atom experiencing extensive overlap and confinement effect causing spin transfer. …
Evaluating Threat Assessment For Multi-Stage Cyber Attacks, Shanchieh Jay Yang, Jared Holsopple, Moises Sudit
Evaluating Threat Assessment For Multi-Stage Cyber Attacks, Shanchieh Jay Yang, Jared Holsopple, Moises Sudit
Presentations and other scholarship
Current practices to defend against cyber attacks are typically reactive yet passive. Recent research work has been proposed to proactively predict hacker's target entities in the early stage of the attack. With prediction, there comes false alarms and missed attacks. Very little has been reported on how to evaluate a threat assessment algorithm, especially for cyber security. Because of the variety and the constantly changing nature of hacker behavior and network vulnerabilities, a cyber threat assessment algorithm is, perhaps more susceptible that for other application domains. This work sets forth the issues on evaluating cyber threat assessment algorithms, and discusses …
Potential Field Based Approach For Multi-Threat Containment With Cooperative Robots, Bhushan Mehendale
Potential Field Based Approach For Multi-Threat Containment With Cooperative Robots, Bhushan Mehendale
Theses
Target or threat containment is a process where a team of robots forms a particular formation around a target so that it gets engulfed in it. The robots under consideration run decentralized Swarm-Algorithms that make them cooperate with each other using their local sensing capabilities. Previous work in this area has dealt with robot formations and single threat containment where the target is either fixed or dynamic. In either case the same targets exist throughout the containment process. The challenge is to use such collaborative robots to contain multiple targets that appear at random times, and expire after some time. …
Zoom Techniques For Achieving Scale Invariant Object Tracking In Real-Time Active Vision Systems, Eric Nelson
Zoom Techniques For Achieving Scale Invariant Object Tracking In Real-Time Active Vision Systems, Eric Nelson
Theses
In a surveillance system, a camera operator follows an object of interest by moving the camera, then gains additional information about the object by zooming. As the active vision field advances, the ability to automate such a system is nearing fruition. One hurdle limiting the use of object recognition algorithms in real-time systems is the quality of captured imagery; recognition algorithms often have strict scale and position requirements where if those parameters are not met, the performance rapidly degrades to failure. The ability of an automatic fixation system to capture quality video of an accelerating target is directly related to …
Transrectal Ultrasound Image Processing For Brachytherapy Applications, Varsha Sampath
Transrectal Ultrasound Image Processing For Brachytherapy Applications, Varsha Sampath
Theses
In this thesis, we propose a novel algorithm for detecting needles and their corresponding implanted radioactive seed locations in the prostate. The seed localization process is carried out efficiently using separable Gaussian filters in a probabilistic Gibbs random field framework. An approximation of the needle path through the prostate volume is obtained using a polynomial fit. The seeds are then detected and assigned to their corresponding needles by calculating local maxima of the voronoi region around the needle position. In our experiments, we were able to successfully localize over 85% of the implanted seeds. Furthermore, as a regular part of …
Using Social Stories To Teach On-Task Behavior And Participation Skills With Children On The Autism Spectrum, Melanie Washburn
Using Social Stories To Teach On-Task Behavior And Participation Skills With Children On The Autism Spectrum, Melanie Washburn
Theses
Social stories are written and individually tailored to provide individuals with autism with accurate social information to address their deficit areas (Gray, 2000). The purpose of this study was to assess the effectiveness of a social story intervention in increasing socially desirable behavior with two young boys diagnosed with Autism Spectrum Disorder (ASD). The following dependent variables were considered: (la) body and eye contact, (lb) staying on the topic, and (2) disruptive and perseverative behavior in the classroom. For both participants, there was an increase in social appropriate behavior and a decrease in disruptive behavior over the course of eight …
Thin/Cambered/Reflexed Airfoil Development For Micro-Air Vehicles At Reynolds Numbers Of 60,000 To 150,000, Michael Reid
Thin/Cambered/Reflexed Airfoil Development For Micro-Air Vehicles At Reynolds Numbers Of 60,000 To 150,000, Michael Reid
Theses
Previous micro-air vehicle research has addressed thin/cambered/reflexed airfoils on an application specific basis, relying heavily on the shape characteristics of previously designed airfoils. The motivation of the current research is to determine the relationship that exists between thin/cambered/reflexed airfoil performance and the defining airfoil shape parameters to improve future airfoil designs. An emphasis is placed on the effect each airfoil shape parameter has on the overall airfoil performance and the effect of the interdependence of each shape parameter. Maximum coefficient of lift, stall angle of attack, maximum coefficient of lift/coefficient of drag and the angle of attack at which it …
A Theoretical Eye Model For Uncalibrated Real-Time Eye Gaze Estimation, Justin Hnatow
A Theoretical Eye Model For Uncalibrated Real-Time Eye Gaze Estimation, Justin Hnatow
Theses
Computer vision systems that monitor human activity can be utilized for many diverse applications. Some general applications stemming from such activity monitoring are surveillance, human-computer interfaces, aids for the handicapped, and virtual reality environments. For most of these applications, a non-intrusive system is desirable, either for reasons of covertness or comfort. Also desirable is generality across users, especially for humancomputer interfaces and surveillance. This thesis presents a method of gaze estimation that, without calibration, determines a relatively unconstrained user’s overall horizontal eye gaze. Utilizing anthropometric data and physiological models, a simple, yet general eye model is presented. The equations that …
Design And Fabrication Of Silicon On Insulator Optical Waveguide Devices, Eric Harvey
Design And Fabrication Of Silicon On Insulator Optical Waveguide Devices, Eric Harvey
Theses
In this thesis we present design, fabrication and testing of several photonic devices on a silicon-on-insulator (SOI) substrate. The historical developments in micro-optic technology including problems it has faced and its current state of maturity is outlined. The most recent integration trends of electronics and optics, particularly the transition of micro-optics to silicon on insulator platform will be reviewed. With this foundation in silicon photonics several rib waveguide structures including directional couplers, WDM couplers, y-branches and MMI splitters are designed, simulated, and fabricated on an SOI substrate. Beam propagation method (BPM) was used in the modeling of these devices. Computation …
A Sub 1v Bandgap Reference Circuit, Ashish Digvadekar
A Sub 1v Bandgap Reference Circuit, Ashish Digvadekar
Theses
This thesis proposes a novel technique for a low supply voltage temperature-independent reference voltage. With the scaling of supply voltages, the threshold voltages don’t scale proportionally and thus low supply reference circuits have replaced the conventional bandgap reference circuit. The first chapter of this work discusses the conventional bandgap references (The Widlar and Brokaw references). The terminology used in the bandgap world is introduced here. The second chapter investigates the existing low supply voltage reference circuits with their advantages and the limitations. A table discussing all the investigated circuits is provided towards the end of the chapter as a summary. …
Food Habits Of A Re-Introduced River Otter (Lontra Canadensis) Population In Western New York- Annual Diet, Temporal And Spatial Variation In Diet And Prey Selection Conclusions, Melissa Skyer
Theses
River otters were re-introduced to Western New York by the Department of Environmental Conservation between 1995 and 2000. The success of this population relies heavily on the availability of suitable prey. Diet was investigated via frequency of prey occurence in scats from 2004-2006. Overall diet was comprised mostly of fish and crayfish. The major fish taxa were Centrarchidae (sunfish), Cyprinidae (carp), and Salmonidae (trout); less common were Esocidae (pike and Castostomidae (sucker). All fish species combined ocurred at 100% frequency during the winter and spring months, but declined during the summer and fall. Sunfish prey were at their highest frequency …
A Hybrid Thermal Video And Ftir Spectrometer System For Rapidly Locating And Characterizing Gas Leaks, David J. Williams, Winthrop Wadsworth, Carl Salvaggio, David W. Messinger
A Hybrid Thermal Video And Ftir Spectrometer System For Rapidly Locating And Characterizing Gas Leaks, David J. Williams, Winthrop Wadsworth, Carl Salvaggio, David W. Messinger
Articles
Undiscovered gas leaks, known as fugitive emissions, in chemical plants and refinery operations can impact regional air quality and present a loss of product for industry. Surveying a facility for potential gas leaks can be a daunting task. Industrial leak detection and repair programs can be expensive to administer. An efficient, accurate and cost effective method for detecting and quantifying gas leaks would both save industries money by identifying production losses and improve regional air quality. Specialized thermal video systems have proven effective in rapidly locating gas leaks. These systems, however, do not have the spectral resolution for compound identification. …
0.35um Implementation Of An Experimental Mixed Signal Image Compression Circuit, Reema Divatia
0.35um Implementation Of An Experimental Mixed Signal Image Compression Circuit, Reema Divatia
Theses
Switched-current is an analog, discrete in time, signal processing technique that is fully compatible with any digital CMOS technology. This means that analog circuits can be realized together with digital components on a single chip without any additional technological processes. In designs implemented using the switched-current technique, the individual circuit elements interact by the means of currents, which allows to reduce voltage swings and thus power consumption. This work investigated the implementation of a low power mixed signal image compression system in TSMC 0.35um technology. The major components of this system were two dimensional discrete cosine transform processor, analog to …
The Expression Of Emotions, Hweawon Chung
The Expression Of Emotions, Hweawon Chung
Theses
Throughout history, humans have been interested in the relationship between the mind and emotion. I am interested in the way in which people transmit their unique feelings to others. These sculptures represent my perspective of this phenomenon. Often people will communicate with their faces instead of their voices. Facial expression is the way to convey one’s true sentiments. Through my work, I try to recreate the moment in which one’s inner thoughts are expressed. In my personal experience, the speaking of a foreign or non-native language often causes misunderstanding. To address this problem, I try to read the face of …
Sweet! Cartoons And Contemporary Painting, Sarah Atlee
Sweet! Cartoons And Contemporary Painting, Sarah Atlee
Theses
I am an artist, and I use cartoons. My work consists mainly of images that communicate to the viewer through recognizable forms. I also use text to help tell my stories. I often create visual elements that function in place of text or information. I use a third visual tool, a hybrid descendant of images and words: the cartoon. Cartoons, once situated at the margins of visual discourse, now have a place in the fine art world. There are comics and animated television shows created for adult audiences. There are gallery and museum shows of work influenced by cartoons, not …
Remembering Polish Town: A History Of Polish Americans In Rochester, James Bulmahn
Remembering Polish Town: A History Of Polish Americans In Rochester, James Bulmahn
Theses
Remembering Polish Town: A History of Polish Americans in Rochester Remembering Polish Town is an interactive multimedia presentation that explores the colorful history and culture of Rochester's Polish community. Based on writings and research conducted by local historian Kathleen Urbanic, the presentation tells the story of St. Stanislaus Kostka Church and the Polish immigrant neighborhood that formed around it. By exploring archival images and video interviews in the presentation, users can: Learn about the history of St. Stanislaus Church and how it serves as the spiritual heart of Rochester's Polish community Learn about St. Stanislaus School and explore class pictures …
Size Reduction Of Microstrip Antennas Using Left-Handed Materials Realized By Complementary Split-Ring Resonators, Aparna Limaye
Size Reduction Of Microstrip Antennas Using Left-Handed Materials Realized By Complementary Split-Ring Resonators, Aparna Limaye
Theses
Recently, metamaterials (MTMs) engineered to have negative values of permittivity and permeability, resulting in a left-handed system, have provided a new frontier for microwave circuits and antennas with possibilities to overcome limitations of the right-handed system. Microwave circuit components such as waveguides, couplers, power dividers and filters, constructed on left-handed materials, have demonstrated properties of backward coupling, phase compensation, reduced sizes, and propagation of evanescent modes. However, there is very limited work to date, on the microstrip antennas with metamaterials. Microstrip antenna is widely used for its low-profile, simplicity of feed and compatibility with planar microstrip circuitry. As the trend …
Tool For The Identification Of Differentially Expressed Genes Using A User-Defined Threshold, Renikko Alleyne
Tool For The Identification Of Differentially Expressed Genes Using A User-Defined Threshold, Renikko Alleyne
Theses
Microarray and 2D gel experiments are used for the large scale measurement, and comparison of gene expression. Since these experiments generate large and complex amounts of data, a great challenge the researcher faces is trying to find ways to analyze this data. This paper focuses on the tool DiffExpress, which was designed to make the gene expression analysis process easier. One of the main features of DiffExpress is the user defined threshold which allows users to set their personal restriction of the expression change at which genes are differentially expressed. DiffExpress also makes use of graphs such as the Scatter …
Structural Analysis Of The Egr Family Of Transcription Factors: Templates For Predicitng Protein - Dna Internations, Jamie Duke
Theses
The EGR family of transcription factors is known to be activated in cells exposed to growth factors in a variety of tissues. The overall structure of the family is highly conserved while the amino acid sequence can be quite diverse allowing for a wide array of DNA recognition sequences. Through homology modeling it is possible to reproduce the structure of the DNA binding domain of EGR proteins, which consists of three zinc fingers. It has also been determined through molecular dynamic simulations that most side chains within the domain reach an equilibrium state. However, residues that are essential for DNA …
Storytelling Of The Korean Traditional Dance "The Hahoe Mask" Using Interactive Multimedia, Hee Jung Lee
Storytelling Of The Korean Traditional Dance "The Hahoe Mask" Using Interactive Multimedia, Hee Jung Lee
Theses
The project, "Storytelling of Korean traditional dance 'The Hahoe mask'" is the cultural collection using interactive multimedia. It provides a way to keep our intangible properties and interpret Korean cultural performances to users who are interested in Korean culture. This thesis is developed in two categories: three stories and one game. The three stories are the Mudong Play, the Monk Play and the Yangban Play and the game is the Butcher's shooting game, referring to the Peakchong Play. This project has presented a way to keep Korean cultural resources in an entertaining and user-friendly way. Through this project, users can …
Driving Monro Muffler Brake With An It Dashboard, April Miller
Driving Monro Muffler Brake With An It Dashboard, April Miller
Theses
Monro Muffler Brake, Inc started in 1966 when the founder Charles (Chuck) J. August discontinued his franchise affiliation in order to expand the service offered at his muffler shops. A locally owned and managed company, Monro went public in 1991. Monro has grown from 20 locally owned stores in 1977 to over 700 stores located in seventeen states. I made contact with my Monro client, John Appleman, through a professional networking group. We met and discussed two areas of the business that had potential Capstone Project opportunities – an inventory project and the creation of a dashboard for the IT …