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Examining The Effects Of Interactive Dynamic Multimedia And Direct Touch Input On Performance Of A Procedural Motor Task, Matthew Marraffino Jan 2014

Examining The Effects Of Interactive Dynamic Multimedia And Direct Touch Input On Performance Of A Procedural Motor Task, Matthew Marraffino

Electronic Theses and Dissertations

Ownership of mobile devices, such as tablets and smartphones, has quickly risen in the last decade. Unsurprisingly, they are now being integrated into the training and classroom setting. Specifically, the U.S. Army has mapped out a plan in the Army Learning Model of 2015 to utilize mobile devices for training purposes. However, before these tools can be used effectively, it is important to identify how the tablets' unique properties can be leveraged. For this dissertation, the touch interface and the interactivity that tablets afford were investigated using a procedural-motor task. The procedural motor task was the disassembly procedures of a …

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Analytical Solutions To Nonlinear Differential Equations Arising In Physical Problems, Mathew Baxter Jan 2014

Analytical Solutions To Nonlinear Differential Equations Arising In Physical Problems, Mathew Baxter

Electronic Theses and Dissertations

Nonlinear partial differential equations are difficult to solve, with many of the approximate solutions in the literature being numerical in nature. In this work, we apply the Homotopy Analysis Method to give approximate analytical solutions to nonlinear ordinary and partial differential equations. The main goal is to apply different linear operators, which can be chosen, to solve nonlinear problems. In the first three chapters, we study ordinary differential equations (ODEs) with one or two linear operators. As we progress, we apply the method to partial differential equations (PDEs) and use several linear operators. The results are all purely analytical, meaning …

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Performing On The Screen: An Exploration Of Gender Representation In Technology Video Advertisements, Subriena Persaud Jan 2014

Performing On The Screen: An Exploration Of Gender Representation In Technology Video Advertisements, Subriena Persaud

Electronic Theses and Dissertations

This study investigates the representation of gender in technology-related video advertisements. This thesis quantitatively and qualitatively examined 54 of the most recent commercials by the top nine Fortune 500 technology companies. A total of 407 characters were coded and quantitatively analyzed while the videos themselves were qualitatively assessed with particular attention given to the videos' themes and the interactions between the characters and the technology products and services. Results of the analyses showed that there were more male, Caucasian characters than any other character type based on gender and race/ethnicity. Females were mainly characterized according to traditional stereotypes, such as …

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Practical Issues In Gpram Development, Yin Li Jan 2014

Practical Issues In Gpram Development, Yin Li

Electronic Theses and Dissertations

In this thesis, two parts of practical issues in the GPRAM system design are included. The first part is the coding part. The sum-product decoding algorithm of LDPC codes has been refined to fit for the GPRAM hardware implementation. As we all know, communication channel has noise. The noise in telecom system is different from that in GPRAM systems. So the noise should be handled well in the GPRAM design. A noise look-up table was created for FPGA and those noises in the table are quantized. The second part of the thesis is to convert perfect images in video stream …

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Stochastic Optimization For Integrated Energy System With Reliability Improvement Using Decomposition Algorithm, Yuping Huang Jan 2014

Stochastic Optimization For Integrated Energy System With Reliability Improvement Using Decomposition Algorithm, Yuping Huang

Electronic Theses and Dissertations

As energy demands increase and energy resources change, the traditional energy system has been upgraded and reconstructed for human society development and sustainability. Considerable studies have been conducted in energy expansion planning and electricity generation operations by mainly considering the integration of traditional fossil fuel generation with renewable generation. Because the energy market is full of uncertainty, we realize that these uncertainties have continuously challenged market design and operations, even a national energy policy. In fact, only a few considerations were given to the optimization of energy expansion and generation taking into account the variability and uncertainty of energy supply …

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Remote Sensing With Computational Intelligence Modelling For Monitoring The Ecosystem State And Hydraulic Pattern In A Constructed Wetland, Golam Mohiuddin Jan 2014

Remote Sensing With Computational Intelligence Modelling For Monitoring The Ecosystem State And Hydraulic Pattern In A Constructed Wetland, Golam Mohiuddin

Electronic Theses and Dissertations

Monitoring the heterogeneous aquatic environment such as the Stormwater Treatment Areas (STAs) located at the northeast of the Everglades is extremely important in understanding the land processes of the constructed wetland in its capacity to remove nutrient. Direct monitoring and measurements of ecosystem evolution and changing velocities at every single part of the STA are not always feasible. Integrated remote sensing, monitoring, and modeling technique can be a state-of-the-art tool to estimate the spatial and temporal distributions of flow velocity regimes and ecological functioning in such dynamic aquatic environments. In this presentation, comparison between four computational intelligence models including Extreme …

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Safety Effectiveness Of Conversion Of Two-Way-Left-Turn Lanes Into Raised Medians, Saif Alarifi Jan 2014

Safety Effectiveness Of Conversion Of Two-Way-Left-Turn Lanes Into Raised Medians, Saif Alarifi

Electronic Theses and Dissertations

Two way left turn lanes (TWLTL) and raised medians are common median treatments on roadways. This research focused on evaluating the safety effectiveness of conversion of TWLTLs into raised medians using Before-After and Cross Sectional Studies. In the Before-After Studies, we evaluated the effect of this treatment using the Naive, Before-After with Comparison Group (CG), and Before-After with Empirical Bayes (EB) Methods. In order to apply these methods, a total of 33 segments of a treated group and 109 segments of a comparison group have been collected. Also, safety performance functions (SPFs) have been developed using the negative binomial model …

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Uncertainty Treatment In Performance Based Seismic Assessment Of Typical Bridge Classes In United States, Mohammad Mehdizadeh Jan 2014

Uncertainty Treatment In Performance Based Seismic Assessment Of Typical Bridge Classes In United States, Mohammad Mehdizadeh

Electronic Theses and Dissertations

Bridge networks are expensive and complex infrastructures and are essential components of today's transportation systems. Despite the advancement in computer aided modeling and increasing the computational power which is increasing the accessibility for developing the fragility curves of bridges, the complexity of the problem and uncertainties involved in fragility analysis of the bridge structures in addition to difficulties in validating the results obtained from the analysis requires precaution in utilization of the results as a decision making tool. The main focus of this research is to address, study and treatment of uncertainties incorporated in various steps of performance based assessments …

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Sketchart: A Pen-Based Tool For Chart Generation And Interaction., Andres Vargas Gonzalez Jan 2014

Sketchart: A Pen-Based Tool For Chart Generation And Interaction., Andres Vargas Gonzalez

Electronic Theses and Dissertations

It has been shown that representing data with the right visualization increases the understanding of qualitative and quantitative information encoded in documents. However, current tools for generating such visualizations involve the use of traditional WIMP techniques, which perhaps makes free interaction and direct manipulation of the content harder. In this thesis, we present a pen-based prototype for data visualization using 10 different types of bar based charts. The prototype lets users sketch a chart and interact with the information once the drawing is identified. The prototype's user interface consists of an area to sketch and touch based elements that will …

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Cost-Sensitive Learning-Based Methods For Imbalanced Classification Problems With Applications, Talayeh Razzaghi Jan 2014

Cost-Sensitive Learning-Based Methods For Imbalanced Classification Problems With Applications, Talayeh Razzaghi

Electronic Theses and Dissertations

Analysis and predictive modeling of massive datasets is an extremely significant problem that arises in many practical applications. The task of predictive modeling becomes even more challenging when data are imperfect or uncertain. The real data are frequently affected by outliers, uncertain labels, and uneven distribution of classes (imbalanced data). Such uncertainties create bias and make predictive modeling an even more difficult task. In the present work, we introduce a cost-sensitive learning method (CSL) to deal with the classification of imperfect data. Typically, most traditional approaches for classification demonstrate poor performance in an environment with imperfect data. We propose the …

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A Holistic Framework For Transitional Management, Ahmed Elattar Jan 2014

A Holistic Framework For Transitional Management, Ahmed Elattar

Electronic Theses and Dissertations

For all business organizations, there comes a time when a change must take place within their eco-system. It consumes a great deal of thought and planning to ensure that the right decision is made as it could alter the entire course of their business for a number of years to come. This change may appear in the form of a brilliant CEO reaching the age of retirement, or an unsuccessful Managing Director being asked to leave before fulfilling the term of her contract. Regardless of the cause, a transition must occur in which a suitable successor is chosen and put …

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Energy Efficient Routing Towards A Mobile Sink Using Virtual Coordinates In A Wireless Sensor Network, Rouhollah Rahmatizadeh Jan 2014

Energy Efficient Routing Towards A Mobile Sink Using Virtual Coordinates In A Wireless Sensor Network, Rouhollah Rahmatizadeh

Electronic Theses and Dissertations

The existence of a coordinate system can often improve the routing in a wireless sensor network. While most coordinate systems correspond to the geometrical or geographical coordinates, in recent years researchers had proposed the use of virtual coordinates. Virtual coordinates depend only on the topology of the network as defined by the connectivity of the nodes, without requiring geographical information. The work in this thesis extends the use of virtual coordinates to scenarios where the wireless sensor network has a mobile sink. One reason to use a mobile sink is to distribute the energy consumption more evenly among the sensor …

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A New Multidimensional Psycho-Physical Framework For Modeling Car-Following In A Freeway Work Zone, Taylor Lochrane Jan 2014

A New Multidimensional Psycho-Physical Framework For Modeling Car-Following In A Freeway Work Zone, Taylor Lochrane

Electronic Theses and Dissertations

As the United States continues to build and repair the ageing highway infrastructure, the bearing of freeway work zones will continue to impact the capacity. To predict the capacity of a freeway work zone, there are several tools available for engineers to evaluate these work zones but only microsimulation has the ability to simulate the driver behavior. One of the limitations of current car-following models is that they only account for one overall behavioral condition. This dissertation hypothesizes that drivers change their driving behavior as they drive through a freeway work zone compared to normal freeway conditions which has the …

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Decentralized Power Management And Transient Control In Hybrid Fuel Cell Ultra-Capacitor System, Seyed Omid Madani Jan 2014

Decentralized Power Management And Transient Control In Hybrid Fuel Cell Ultra-Capacitor System, Seyed Omid Madani

Electronic Theses and Dissertations

Solid Oxide Fuel Cells (SOFCs) are considered suitable for alternative energy solutions due to advantages such as high efficiency, fuel flexibility, tolerance to impurities, and potential for combined cycle operations. One of the main operating constraints of SOFCs is fuel starvation, which can occur under fluctuating power demands. It leads to voltage loss and detrimental effects on cell integrity and longevity. In addition, reformer based SOFCs require sufficient steam for fuel reforming to avoid carbon deposition and catalyst degradation. Steam to carbon ratio (STCR) is an index indicating availability of the steam in the reformer. This work takes a holistic …

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Exploring The Hows And The Whos: The Effects Of Self-Regulation Prompting And Goal Orientation On The E-Learning Process, Lauren Benishek Jan 2014

Exploring The Hows And The Whos: The Effects Of Self-Regulation Prompting And Goal Orientation On The E-Learning Process, Lauren Benishek

Electronic Theses and Dissertations

This study investigated the effects that self-regulation prompts and goal orientation may exhibit on self-regulatory processes and subsequent learning. Specifically, a moderated mediation model was developed to explain how self-regulation prompts interact with prove performance goal orientation to affect two mediational processes, time on task and self-regulatory activity, and ultimately impact learning within a learner-controlled e-learning environment. To assess these hypotheses, an online Microsoft Excel instructional program was developed wherein 197 participants had control over when and where they completed training, the content they reviewed, the delivery medium (text-based or video-based), and the sequencing and pace at which they progressed …

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Development Of Treatment Train Techniques For The Evaluation Of Low Impact Development In Urban Regions, Mike Hardin Jan 2014

Development Of Treatment Train Techniques For The Evaluation Of Low Impact Development In Urban Regions, Mike Hardin

Electronic Theses and Dissertations

Stormwater runoff from urban areas is a major source of pollution to surface water bodies. The discharge of nutrients such as nitrogen and phosphorus is particularly damaging as it results in harmful algal blooms which can limit the beneficial use of a water body. Stormwater best management practices (BMPs) have been developed over the years to help address this issue. While BMPs have been investigated for years, their use has been somewhat limited due to the fact that much of the data collected is for specific applications, in specific regions, and it is unknown how these systems will perform in …

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Modeling And Spray Pyrolysis Processing Of Mixed Metal Oxide Nano-Composite Gas Sensor Films, Seyed Mohammad Navid Khatami Jan 2014

Modeling And Spray Pyrolysis Processing Of Mixed Metal Oxide Nano-Composite Gas Sensor Films, Seyed Mohammad Navid Khatami

Electronic Theses and Dissertations

The role of sensor technology is obvious in improvement and optimization of many industrial processes. The sensor films, which are considered the core of chemical sensors, have the capability to detect the presence and concentration of a specific chemical substance. Such sensor films achieve selectivity by detecting the interaction of the specific chemical substance with the sensor material through selective binding, adsorption and permeation of analyte. This research focuses on development and verification of a comprehensive mathematical model of mixed metal oxide thin film growth using spray pyrolysis technique (SPT). An experimental setup is used to synthesize mixed metal oxide …

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Computation Of Boolean Formulas Using Sneak Paths In Crossbar Computing, Alvaro Velasquez Jan 2014

Computation Of Boolean Formulas Using Sneak Paths In Crossbar Computing, Alvaro Velasquez

HIM 1990-2015

Memristor-based nano-crossbar computing is a revolutionary computing paradigm that does away with the traditional Von Neumann architectural separation of memory and computation units. The computation of Boolean formulas using memristor circuits has been a subject of several recent investigations. Crossbar computing, in general, has also been a topic of active interest, but sneak paths have posed a hurdle in the design of pervasive general-purpose crossbar computing paradigms. In this paper, we demonstrate that sneak paths in nano-crossbar computing can be exploited to design a Boolean-formula evaluation strategy. We demonstrate our approach on a simple Boolean formula and a 1-bit addition …

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Combustion Instability Mechanism Of A Reacting Jet In Cross Flow At Gas Turbine Operating Conditions, Jared Pent Jan 2014

Combustion Instability Mechanism Of A Reacting Jet In Cross Flow At Gas Turbine Operating Conditions, Jared Pent

Electronic Theses and Dissertations

Modern gas turbine designs often include lean premixed combustion for its emissions benefits; however, this type of combustion process is susceptible to self-excited combustion instabilities that can lead to damaging heat loads and system vibrations. This study focuses on identifying a mechanism of combustion instability of a reacting jet in cross flow, a flow feature that is widely used in the design of gas turbine combustion systems. Experimental results from a related study are used to validate and complement three numerical tools that are applied in this study – self-excited Large Eddy Simulations, 3D thermoacoustic modeling, and 1D instability modeling. …

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Automatic 3d Human Modeling: An Initial Stage Towards 2-Way Inside Interaction In Mixed Reality, Yiyan Xiong Jan 2014

Automatic 3d Human Modeling: An Initial Stage Towards 2-Way Inside Interaction In Mixed Reality, Yiyan Xiong

Electronic Theses and Dissertations

3D human models play an important role in computer graphics applications from a wide range of domains, including education, entertainment, medical care simulation and military training. In many situations, we want the 3D model to have a visual appearance that matches that of a specific living person and to be able to be controlled by that person in a natural manner. Among other uses, this approach supports the notion of human surrogacy, where the virtual counterpart provides a remote presence for the human who controls the virtual character's behavior. In this dissertation, a human modeling pipeline is proposed for the …

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An Introductory Study Of The Dynamics Of Autorotation For Wind Energy Harvesting, Bilal Salih Jan 2014

An Introductory Study Of The Dynamics Of Autorotation For Wind Energy Harvesting, Bilal Salih

Electronic Theses and Dissertations

Wind turbines have been used for decades to harvest wind energy. They are suitable only to work on close to ground, and have several drawbacks that are related to the availability of the wind and the amount of extracted power compared with the cost of construction. On the other hand, there is an abundant wind power that is available at high altitudes. The wind jet streams at high elevations 8 - 12 kms are pervasive and persistent, and can potentially produce immense wind energy. Even at moderate elevations of 4 - 5 kms, wind power densities are much higher than …

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A Continuous Hydrologic Model Structure For Applications At Multiple Time Scales, Jonathan Griffen Jan 2014

A Continuous Hydrologic Model Structure For Applications At Multiple Time Scales, Jonathan Griffen

Electronic Theses and Dissertations

There are many different controlling factors on the partitioning of rainfall into runoff. However, the influence of each of these controls varies across different temporal scales. Consequently, numerous water balance models have been developed in the literature for application across various time scales. These models are usually developed for a particular time scale so that the controls with the greatest influence on rainfall partitioning are captured. For example, the SCS curve number method was developed to simulate direct runoff at the event scale; the "abcd" model was developed as a monthly water balance model; and the Budyko model was developed …

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Exploring Sparsity, Self-Similarity, And Low Rank Approximation In Action Recognition, Motion Retrieval, And Action Spotting, Chuan Sun Jan 2014

Exploring Sparsity, Self-Similarity, And Low Rank Approximation In Action Recognition, Motion Retrieval, And Action Spotting, Chuan Sun

Electronic Theses and Dissertations

This thesis consists of 4 major parts. In the first part (Chapters 1-2), we introduce the overview, motivation, and contribution of our works, and extensively survey the current literature for 6 related topics. In the second part (Chapters 3-7), we explore the concept of "Self-Similarity" in two challenging scenarios, namely, the Action Recognition and the Motion Retrieval. We build three-dimensional volume representations for both scenarios, and devise effective techniques that can produce compact representations encoding the internal dynamics of data. In the third part (Chapter 8), we explore the challenging action spotting problem, and propose a feature-independent unsupervised framework that …

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Photonic Filtering For Applications In Microwave Generation And Metrology, Marcus Bagnell Jan 2014

Photonic Filtering For Applications In Microwave Generation And Metrology, Marcus Bagnell

Electronic Theses and Dissertations

This work uses the photonic filtering properties of Fabry-Perot etalons to show improvements in the electrical signals created upon photodetection of the optical signal. First, a method of delay measurement is described which uses multi-heterodyne detection to find correlations in white light signals at 20 km of delay to sub millimeter resolution. By filtering incoming white light with a Fabry-Perot etalon, the pseudo periodic signal is suitable for measurement by combining and photodetecting it with an optical frequency comb. In this way, optical data from a large bandwidth can be downconverted and sampled on low frequency electronics. Second, a high …

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Evaluation Of A Secure Laptop Based Testing Program In An Undergraduate Nursing Program, Jinyuan Tao Jan 2014

Evaluation Of A Secure Laptop Based Testing Program In An Undergraduate Nursing Program, Jinyuan Tao

Electronic Theses and Dissertations

This applied dissertation paper introduced a program evaluation of a secure laptop-based testing (SLBT) program, which was implemented from 2009 to 2014 in an undergraduate nursing program at a private institution in the southeastern region of the United States (US). Computerized testing is an old topic in the educational research field, but the instructor-made, laptop-based secure testing that utilizes learning management systems (LMS) for undergraduate nursing programs is a fairly new topic in the US. Traditionally, testing has been administered with paper and pencil in the undergraduate nursing programs in the US for security reasons. Recently, with different robust LMSs, …

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Building Educator Capacity In Support Of Student Achievement On Florida's United States History End-Of-Course Assessment, Stacy Skinner Jan 2014

Building Educator Capacity In Support Of Student Achievement On Florida's United States History End-Of-Course Assessment, Stacy Skinner

Electronic Theses and Dissertations

Florida's United States History End-of-Course (EOC) Assessment performance outcomes are scheduled to impact student course grades, educator evaluation scores, and school grades. A professional learning plan to improve teaching and learning in support of student achievement on the Assessment does not exist. Neither Florida Statute nor the Florida Department of Education (FDOE) facilitate or fund professional learning in support of these influences. This dissertation in practice proposes the use of the U.S. History EOC Assessment Professional Learning Series to build educator capacity in support of student achievement on the Assessment. Implementation of professional learning could address the disparity between the …

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The Conceptual Field Of Proportional Reasoning Researched Through The Lived Experiences Of Nurses, Deana Deichert Jan 2014

The Conceptual Field Of Proportional Reasoning Researched Through The Lived Experiences Of Nurses, Deana Deichert

Electronic Theses and Dissertations

Proportional reasoning instruction is prevalent in elementary, secondary, and post-secondary schooling. The concept of proportional reasoning is used in a variety of contexts for solving real-world problems. One of these contexts is the solving of dosage calculation proportional problems in the healthcare field. On the job, nurses perform drug dosage calculations which carry fatal consequences. As a result, nursing students are required to meet minimum competencies in solving proportion problems. The goal of this research is to describe the lived experiences of nurses in connection to their use of proportional reasoning in order to impact instruction of the procedures used …

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Comparison Of Second Order Conformal Symplectic Schemes With Linear Stability Analysis, Dwayne Floyd Jan 2014

Comparison Of Second Order Conformal Symplectic Schemes With Linear Stability Analysis, Dwayne Floyd

Electronic Theses and Dissertations

Numerical methods for solving linearly damped Hamiltonian ordinary differential equations are analyzed and compared. The methods are constructed from the well-known Störmer-Verlet and implicit midpoint methods. The structure preservation properties of each method are shown analytically and numerically. Each method is shown to preserve a symplectic form up to a constant and are therefore conformal symplectic integrators, with each method shown to accurately preserve the rate of momentum dissipation. An analytical linear stability analysis is completed for each method, establishing thresholds between the value of the damping coefficient and the step-size that ensure stability. The methods are all second order …

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Parity-Time And Supersymmetry In Optics, Mohammad Ali Miri Jan 2014

Parity-Time And Supersymmetry In Optics, Mohammad Ali Miri

Electronic Theses and Dissertations

Symmetry plays a crucial role in exploring the laws of nature. By exploiting some of the underlying analogies between the mathematical formalism of quantum mechanics and that of electrodynamics, in this dissertation we show that optics can provide a fertile ground for studying, observing, and utilizing some of the peculiar symmetries that are currently out of reach in other areas of physics. In particular, in this work, we investigate two important classes of symmetries, parity-time symmetry (PT) and supersymmetry (SUSY), within the context of classical optics. The presence of PT symmetry can lead to entirely real spectra in non-Hermitian systems. …

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The Subject Librarian Newsletter, Mathematics, Spring 2014, Patti Mccall Jan 2014

The Subject Librarian Newsletter, Mathematics, Spring 2014, Patti Mccall

Libraries' Newsletters

No abstract provided.

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