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Assessment Of Accuracy And Repeatability Of Verbal Exertion Estimation In The Presence Of Fatigue, Matthew Klosner
Assessment Of Accuracy And Repeatability Of Verbal Exertion Estimation In The Presence Of Fatigue, Matthew Klosner
Theses
Occupational ergonomics has long focused on physical exertion as a key to the prevention of musculoskeletal injuries. Traditionally, objective measurements of forceful exertion such as electromyography (EMG) and direct force measurement have been used to assess exposure to forceful exertion. However, these measurements are often not practical for occupational settings due to their cumbersome and costly nature. As a result, psychophysical magnitude estimation may be used, in which human subjects verbally estimate the magnitude of an exertion. Despite an abundance of research on verbal estimation, its repeatability and the effects of fatigue on estimation accuracy have not been sufficiently assessed. …
Rfid-Assisted Wireless Sensor Networks For Cardiac Tele-Healthcare, Laura J. Celentano
Rfid-Assisted Wireless Sensor Networks For Cardiac Tele-Healthcare, Laura J. Celentano
Theses
As the baby boomers head into old age, America will see a dramatic increase in the number of elderly patients admitted to healthcare facilities, such as nursing homes. Due to this rising elderly population, it will be difficult for nursing home personnel to monitor all patients at once. One way to cut down on the amount of supervision by the staff is for patients to administer their own medication. This leads to new problems though, as a patient incorrectly administering one of their many medications could lead to a disastrous end. Technology to wirelessly transmit a patient’s electrocardiogram (ECG) has …
Global Character Of The Solutions Of Rational Difference, Halyna Romanyuk
Global Character Of The Solutions Of Rational Difference, Halyna Romanyuk
Theses
It is our goal to investigate the global character of the positive solutions of the following rational difference equation:Xn=1+[...] the initial conditions are positive real numbers. We will examine the global stability, periodic nature, boundedness and the monotonicity character of the positives solutions. (Refer to PDF file for exact formulas)
A New Adaptive Edge Enhancement Algorithm For Color Laser Printers, Manoj Kumar Reddy
A New Adaptive Edge Enhancement Algorithm For Color Laser Printers, Manoj Kumar Reddy
Theses
This thesis presents a novel algorithm for improving quality of edges in printed text. The algorithm is designed to add pixels at selected edge locations after halftoning. The extent of the correction is proportional to the “strength” of the edge, as determined by comparing the local differences in a four-pixel neighborhood to a dynamically generated threshold. The process is computationally efficient and requires minimal memory resources. The performance of our proposed algorithm is clearly demonstrated on several characters and lines. While the algorithm aims to improve the quality of printed text (edges), it is possible to extend its application to …
Dynamic Inversion Of Underactuated Systems Via Squaring Transformation Matrix, Ryan Schkoda
Dynamic Inversion Of Underactuated Systems Via Squaring Transformation Matrix, Ryan Schkoda
Theses
In this thesis, a novel method for control of non-square dynamical systems using a model following approach is developed. Control methodologies such as dynamic inversion and sliding mode control require an inversion of the input influence matrix. However, if the system input influence matrix is non-square direct inversion is not possible. Pseudo inversion of the input influence matrix may be performed for control allocation. However, pseudo inversion limits the control to states where the controller is directly applied. The pseudoinverse method does not permit the engineer to designate a particular state to control or track. When accurate tracking of states …
Turing Instabilities In A S-I-R Model, Hye Yon Yi
Turing Instabilities In A S-I-R Model, Hye Yon Yi
Theses
With the increasing threat of biological warfare and the fear of an epidemic outbreak of influenza, smallpox, and other deadly diseases, the field of epidemic modeling is becoming increasingly important in the scientific fields. The focus of this thesis will be to create a model to study the effects of the rates of reaction and the rates of diffusion within a network based on the different parameters used in the modeling of any disease. For this model, the exact parameters of a specific disease are not as crucial as the qualitative behaviors that occur from the changing parameters. The model …
A Link-Quality-Aware Graph Model For Cognitive Radio Network Routing Topology Management, Andrew Michael James
A Link-Quality-Aware Graph Model For Cognitive Radio Network Routing Topology Management, Andrew Michael James
Theses
Wireless communications is one of the fastest growing fields in the world; however this creates a problem since all wireless signals are fighting for the same limited amount spectrum in any given space. The underutilization of licensed spectrum has created a need for a new way to use it. Cognitive Radio Networks and Dynamic Spectrum Access are a solution to this problem. By opportunistically using spectrum, devices can gain access to more wireless bandwidth while not violating FCC regulations. The concepts of Cognitive Radio Networks and Dynamic Spectrum Access are very new topics and have yet to be fully explored. …
Character Design And Marketing – Designer Toys, Yen-Fu Chen
Character Design And Marketing – Designer Toys, Yen-Fu Chen
Theses
Designing a series of my characters and one story for those characters is the first step in this project. Those characters will be presented on my design products from 2D to 3D and from t-shirt to cell phone downloads. There are four categories for my design works. The first part is 2D print media. I will put those characters on posters, stickers and post cards. Also, the customers can have my character designs on their t-shirts. The second is that I will have real toy models for my characters. The customers can have my real design works, and they can …
Land Surface Temperature And Emissivity Retrieval From Thermal Infrared Hyperspectral Imaging, Marvin Boonmee
Land Surface Temperature And Emissivity Retrieval From Thermal Infrared Hyperspectral Imaging, Marvin Boonmee
Theses
A new algorithm, optimized land surface temperature and emissivity retrieval (OLSTER), is presented to compensate for atmospheric effects and retrieve land surface temperature (LST) and emissivity from airborne thermal infrared hyperspectral data. The OLSTER algorithm is designed to retrieve properties of both natural and man-made materials. Multi-directional or multi-temporal observations are not required, and the scenes do not have to be dominated by blackbody features. The OLSTER algorithm consists of a preprocessing step, an iterative search for nearblackbody pixels, and an iterative constrained optimization loop. The preprocessing step provides initial estimates of LST per pixel and the atmospheric parameters of …
High Resolution Source Localization In Near Field Sensor Arrays By Mvdr Technique, Joseph J. Handfield
High Resolution Source Localization In Near Field Sensor Arrays By Mvdr Technique, Joseph J. Handfield
Theses
Research over the last decade has led to technological advances in high frequency active and passive detection technology and signal processing. An emerging application area is the standoff detection of concealed objects such as weapons and explosives using penetrating electromagnetic radiation such as terahertz waves (THz). Here sensor arrays are employed in the near field to image the concealed objects. A new approach is investigated to improve upon methods such as Fourier inversion and sum and delay beamforming. A method based on the Minimum Variance Distortionless Response (MVDR) filter technique is developed to localize source points in the electric field …
Theoretical Framework For Predicting Joint Reaction And Ground Reaction Forces In A Dynamic Pendulum Tree Model Of Human Motion, Peyman Rajai
Theses
Lagrangian dynamics and the method of superfluous coordinates are applied to find ground and joint reaction forces on the human body modeled as a general branched 2-D pendulum tree system with arbitrary segments and arbitrarily distributed point masses. A theoretical framework is established for predicting these constraint forces during human motion and consequently their effects on dynamics, dynamic stability, energy efficiency and the potential of these forces to produce joint injury and/or pain. Applications to human walking are initiated. During idealized phases where there is only single point contact of the stance leg with the ground such as just after …
The Link Between Emotional Recognition And Executive Functioning Ability, Alexandra Popa
The Link Between Emotional Recognition And Executive Functioning Ability, Alexandra Popa
Theses
This study investigated the link between executive functioning (e.g., planning, shifting, inhibiting) and emotional recognition ability based on facial expressions. In addition, differences in emotional recognition and executive functioning among college majors and year in school was assessed. Gender differences were studied as well. A sample of 53 volunteer undergraduate students were administered an abbreviated version of Ekman's Pictures of Facial Affect (AEFER) and the Wisconsin Card Sorting Test: Computer Version 4 (WCST:CV$). Findings indicate a moderate association between emotional recognition and executive functioning. Participants' performance varied on emotional recognition tasks based on year and major. Also, differences in executive …
Improvement Of Retrieved Reflectance In The Presence Of Clouds, Brent Bartlett
Improvement Of Retrieved Reflectance In The Presence Of Clouds, Brent Bartlett
Theses
Many algorithms exist to invert airborne imagery from units of either radiance or sensor specific digital counts to units of reflectance. These compensation algorithms remove unwanted atmospheric variability allowing objects on the ground to be analyzed. Low error levels in homogenous atmospheric conditions have been demonstrated. In many cases however, clouds are present in the atmosphere which introduce error into the inversion at unacceptable levels. For example, the relationship that is defined between sensor reaching radiance and ground reflectance in direct sunlight will not be the same as in a cloud shadow. A novel method has been developed which utilizes …
Modeling Wildland Fire Radiance In Synthetic Remote Sensing Scenes, Zhen Wang
Modeling Wildland Fire Radiance In Synthetic Remote Sensing Scenes, Zhen Wang
Theses
This thesis develops a framework for implementing radiometric modeling and visualization of wildland fire. The ability to accurately model physical and op- tical properties of wildfire and burn area in an infrared remote sensing system will assist efforts in phenomenology studies, algorithm development, and sensor evaluation. Synthetic scenes are also needed for a Wildland Fire Dynamic Data Driven Applications Systems (DDDAS) for model feedback and update. A fast approach is presented to predict 3D flame geometry based on real time measured heat flux, fuel loading, and wind speed. 3D flame geometry could realize more realistic radiometry simulation. A Coupled Atmosphere-Fire …
An Evolutionary Algorithm Approach To Simultaneous Multi-Mission Radar Waveform Design, Jason Enslin
An Evolutionary Algorithm Approach To Simultaneous Multi-Mission Radar Waveform Design, Jason Enslin
Theses
It would be beneficial with today’s cluttered electromagnetic spectrum to be able to perform multiple radar missions simultaneously from a single platform. The design of a waveform for this application would greatly benefit the radar community. Radar systems are used to perform many missions, some of which include the detection and tracking of airborne and ground moving targets as well as Synthetic Aperture Radar (SAR) imaging. There are many systems that can operate in multiple modes to perform these missions, although there is no one radar that can simultaneously perform multiple missions using the same waveform [1]. Each mission can …
Applicability Of Clustering To Cyber Intrusion Detection, Gilbert Hendry
Applicability Of Clustering To Cyber Intrusion Detection, Gilbert Hendry
Theses
Maintaining cyber security is a complex task, utilizing many levels of network information along with an array of technology. Current practices for combating cyber attacks typically use Intrusion Detection Systems (IDSs) to passively detect and block multi-stage attacks. Because of the speed and force at which a new type of cyber attack can occur, automated detection and response is becoming an apparent necessity. Anomaly-based detection systems, such as statistical-based or clustering algorithms, attempt to address this by analyzing the relative differences in network and host activity. Signature-based IDS systems are typically more accurate for known attacks, but require time and …
Dishsoap For Clean Water: How The Design Of Everyday Objects Can Promote Happiness, Xanthe Matychak
Dishsoap For Clean Water: How The Design Of Everyday Objects Can Promote Happiness, Xanthe Matychak
Theses
This project began with the question: What keeps us from achieving sustainable happiness, happiness for ourselves and future generations? I have chosen to focus on the citizen/consumer conflict which occurs when our consumer choices are incongruous with our moral obligations to society. This conflict is a consequence of the market systems that are in place and consumers’ lack of a critical understanding of these systems. Thus, with this project, I am attempting to make these systems more transparent. Looking at economic approaches like price adjustment and awareness-raising strategies I have focused on the latter. Drawing from the history of semiotics …
Design And Analysis Of Information Fusion, Dynamic Sensor Management Rules For Cyber Security Systems Using Simulation, Katie Mcconky
Design And Analysis Of Information Fusion, Dynamic Sensor Management Rules For Cyber Security Systems Using Simulation, Katie Mcconky
Theses
Computer networks are vulnerable to attacks from outside threats. Intrusion detection systems are used to monitor computer networks for attacker activity. Intrusion detection systems consist of a set of sensors placed strategically throughout a computer network. The large amounts of data produced by intrusion detection system sensors may be sent to and processed by information fusion engines. Information fusion engines correlate alerts and identify attack paths of attackers. Sensor management strategies are developed to minimize the time taken to process attack data, minimize the bandwidth used by the security system of a network, and maximize the number of attacks successfully …
Urban Middle School Students’ Perceptions Of Math And Science Teachers’ Caring Behaviors And Student’S Self Reports Of Academic Competence, Brenda Rhyne
Theses
This research examines urban middle school students' perceptions of their math and science teachers' behaviors. Specific caring behaviors (challenging questions, encouragement and praise, non-verbal support, understanding and friendly, and controlling -- which refer to teacher's expectations for classroom behavior) were evaluated by 101 students (72 girls and 29 boys) in grades 7, 8, and 9 by means of a survey instrument. Research findings support earlier investigations confirming that boys and girls interpret teacher friendliness differently. However, both male and female students reported similar perceptions of their teachers' behaviors with respect to praise, non-verbal support, and controlling. In addition, a strong …
Automatic Image Segmentation By Dynamic Region Growth And Multiresolution Merging, Luis Enrique Garcia Ugarriza
Automatic Image Segmentation By Dynamic Region Growth And Multiresolution Merging, Luis Enrique Garcia Ugarriza
Theses
Image segmentation is a fundamental task in many computer vision applications. We present a novel unsupervised color image segmentation algorithm named GSEG, which exploits the information obtained from detecting edges in color images. By using a color gradient detection technique, pixels without edges are clustered and labeled individually to identify the image content. Elements that contain higher gradient density are included by a dynamic generation of clusters as the segmentation progresses. By quantizing the colors in the image and extracting texture information from the neighborhood entropy of each pixel, the proposed method obtains accurate models of texture that are highly …
Methodology And Optimizing Of Multiple Frame Format Buffering Within Fpga H.264/Avc Decoder With Frext., Timothy Aaron Stotts
Methodology And Optimizing Of Multiple Frame Format Buffering Within Fpga H.264/Avc Decoder With Frext., Timothy Aaron Stotts
Theses
Digital representation of video data is an inherently resource demanding problem that continues to necessitate the development and refinement of coding methods. The H.264/AVC standard, along with its recent Fidelity Range Extensions amendment (FRExt), is quickly being adopted as the standard codec for broadcast and distribution of high definition video. The FRExt amendment, while not necessarily affecting the overall decoder architecture, presents an added complexity of providing efficient memory management for buffering intermediate frames of various pixel color samplings and depths. This thesis evaluated the role of designing the frame buffer of a hardware video decoder, with integrated support for …
Bifurcation Scenarios In Semiconductor Lasers Subject To Optical Injection, Rachel Marilley
Bifurcation Scenarios In Semiconductor Lasers Subject To Optical Injection, Rachel Marilley
Theses
In the thesis we examine the dynamics of semiconductor lasers subject to optical injection. We study typical bifurcation scenarios, namely the saddle- node and Hopf bifurcations associated with this system. First, the system is investigated analytically, then numerical simulations verify our analytical conclusions.
An Integrated Water Quality Modeling System With Dynamic Remote Sensing Feedback, Yan Li
An Integrated Water Quality Modeling System With Dynamic Remote Sensing Feedback, Yan Li
Theses
A coupled hydrodynamic-optical water quality modeling system based on Dynamic Data Driven Applications Systems (DDDAS) concepts that assimilates remote sensing data into a hydrodynamic model was developed and tested. The modeling system includes the hydrodynamic model (ALGE), a radiative transfer model (Hydrolight), and remote imagery (MODIS) as a dynamic feedback. The DDDAS was implemented through an Ensemble Kalman Filter (EnKF) with a small ensemble space. Large scale thermal structure and circulation patterns in Lake Ontario were simulated during the spring and summer seasons. High-resolution stream plume studies were performed in Conesus Lake and for the plume of the Niagara River …
Synchronicities 4:4, Emily M. Sperry
Synchronicities 4:4, Emily M. Sperry
Theses
This thesis paper examines the work presented in my M.F.A. thesis installation Synchronicities 4:4. The paper explores the aesthetic and theoretical concepts compiled within this project, in order to reveal the mindset and motivations of the artist. Elements covered in this text include installation design, research of its conceptual history, and citations of various artists working in similar methods to achieve equivalent creative goals. This thesis project uses the mediums of sound and video to elucidate a greater understanding of the realms of human awareness, particularly in relation to the mystical characteristics of invisible sensory information. This thesis describes theories …
Source Localization Within A Uniform Circular Sensor Array, Danny Zhu
Source Localization Within A Uniform Circular Sensor Array, Danny Zhu
Theses
Traditional source localization problems have been considered with linear and planar antenna arrays. In this research work, we assume that the sources are located within a uniformly spaced circular sensor array. Using a modified Metropolis algorithm and Polak-Ribière conjugate gradients, a hybrid optimization algorithm is proposed to localize sources within a two dimensional uniform circular sensor array, which suffers from far field attenuation. The developed algorithm is capable of accurately locating the position of a single, stationary source within 1% of a wavelength and 1° of angular displacement. In the single stationary source case, the simulated Cramer-Rao Lower Bound has …
Vtac: Virtual Terrain Assisted Impact Assessment For Cyber Attacks, Brian Argauer
Vtac: Virtual Terrain Assisted Impact Assessment For Cyber Attacks, Brian Argauer
Theses
Recently, there has been substantial research in the area of network security. Correlation of intrusion detection sensor alerts, vulnerability analysis, and threat projection are all being studied in hopes to relieve the workload that analysts have in monitoring their networks. Having an automated algorithm that can estimate the impact of cyber attacks on a network is another facet network analysts could use in defending their networks and gaining better overall situational awareness. Impact assessment involves determining the effect of a cyber attack on a network. Impact algorithms may consider items such as machine importance, connectivity, user accounts, known attacker capability, …
Characterization Of Cyber Attacks Through Variable Length Markov Models, Daniel Fava
Characterization Of Cyber Attacks Through Variable Length Markov Models, Daniel Fava
Theses
The increase in bandwidth, the emergence of wireless technologies, and the spread of the Internet throughout the world have created new forms of communication with effects on areas such as business, entertainment, and education. This pervasion of computer networks into human activity has amplified the importance of cyber security. Network security relies heavily on Intrusion Detection Systems (IDS), whose objective is to detect malicious network traffic and computer usage. IDS data can be correlated into cyber attack tracks, which consist of ordered collections of alerts triggered during a single multi-stage attack. The objective of this research is to enhance the …
Effective Use Of Negative Space In Graphic Design, Dong Hyun Lee
Effective Use Of Negative Space In Graphic Design, Dong Hyun Lee
Theses
This thesis will investigate the potential use of effective negative space to improve the readability of text typography in graphic design. Negative space in two-dimensional design is also referred to as "white space" -- which is void of text or graphics. Negative space is more than just the background of a design. This thesis will demonstrate negative space as an element of design itself and develop a systematic approach to address negative space as it occurs in the following: margins, background, space for the eye to rest, signal that there is a break or end in the communication, variation in …
The Impact Of Variable Data Print On Usability In Design, William Wells
The Impact Of Variable Data Print On Usability In Design, William Wells
Theses
In a world where people see, process and remember information differently, the question arises: Is technology being used in a manner that acknowledges and addresses user differences to the fullest extent? Currently, new print technologies like Variable Data Printing (VDP) are only being used to create customized direct mailing pieces and personalized products for the purpose of marketing, sales and promotion. However, VDP introduces the ability to change data and design elements in printed documents on an individual basis, making it possible to address differences in visual and cognitive abilities, language and culture, and situational considerations. Applying this concept of …
Environmental Risk Assessment Of Groundwater Recharge In Liwa Aquifer, Entisar Salem Al-Katheeri
Environmental Risk Assessment Of Groundwater Recharge In Liwa Aquifer, Entisar Salem Al-Katheeri
Theses
The Abu Dhabi Emirate has witnessed a remarkable development in the various aspects of life during the last three decades. Such rapid development imposes a tremendous pressure on natural resources including water. Conventional water resources in the Emirate are limited. The surface water is almost absent due to the scarcity and randomness of rainfall coupled with the prevailing arid conditions and high evaporation rates. In addition, groundwater is mostly brackish and non-renewable. Over-pumping practices have resulted into a severe decline in the groundwater levels and quality. A large portion of the freshwater demands in the Abu Dhabi Emirate is covered …