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  Partner: UNT Libraries
 Language: English
 Collection: UNT Theses and Dissertations
The Impact of End-user Decision-making in the Supply of Public Transportation

The Impact of End-user Decision-making in the Supply of Public Transportation

Date: May 2015
Creator: Scott, Rebecca A
Description: Efficient public transportation provides economic and social opportunities that increase accessibility to markets and employment as well as providing investment benefits. Key challenges to the U.S. public transportation industry include developing modes and increasing the availability of public transportation in a manner that meets the needs of individual users in a cost effective manner. A problem facing public transportation officials is the need to understand the factors that influence consumer decision-making and consumer attitudes toward public transportation. Feedback regarding experiences as well as expectations from commuters provides information for developing and improving public transportation. Thus, decision-making factors of end-users are keys to improving supply, growth, and understanding utilization of public transportation. Public transportation officials seek to improve the public transportation experience for commuters by increasing modes and benefits of the systems. The decision-making factors of the end-users require identification and examination in order to provide a high quality and efficient experience for commuters. The research questions of interest in the current dissertation are: (1) What are the decision-making factors affecting commuters’ attitudes toward public transportation? and (2) How do the end-user decision-making factors affect the supply of public transportation? The purpose of this research is to extend the current body ...
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What Did the Client Say? Auditor Memory of a Client Inquiry: a Study of Encoding Style and Note Taking

What Did the Client Say? Auditor Memory of a Client Inquiry: a Study of Encoding Style and Note Taking

Date: May 2015
Creator: Vinson, Jeremy M.
Description: Client inquiry is a fundamental procedure for gathering audit evidence. Since inquiries are not audio- or video-recorded in practice, auditor memory is vital to the accuracy of evidence gathered in this manner. Due to the potential for error during memory encoding and retrieval, the effect of memory on judgment, and the cognitive complexity of conducting a face-to-face inquiry, examining factors affecting auditor memory of client inquiries is important. In this dissertation, I examine two factors likely to affect auditor memory of a client inquiry. First, encoding style is a low-level cognitive function representing how much stimuli an individual perceives before applying prior knowledge (schemata) to assist with encoding to long-term memory, affecting information noticed and remembered. Differences in auditors’ encoding style may explain variance in memory accuracy of evidence gathered from a client inquiry. Second, audit professionals often make hand-written or typed notes during client inquiries, and subsequently review the notes, which may affect memory. To address these issues, I first gather interview evidence from six professional auditors to determine how practicing auditors plan, prepare for, conduct, and document evidence from client inquiries. I then develop and execute a video-based experiment with 33 senior auditor participants, 23 masters-level accounting students, ...
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The Procedural Generation of Interesting Sokoban Levels

The Procedural Generation of Interesting Sokoban Levels

Date: May 2015
Creator: Taylor, Joshua
Description: As video games continue to become larger, more complex, and more costly to produce, research into methods to make game creation easier and faster becomes more valuable. One such research topic is procedural generation, which allows the computer to assist in the creation of content. This dissertation presents a new algorithm for the generation of Sokoban levels. Sokoban is a grid-based transport puzzle which is computational interesting due to being PSPACE-complete. Beyond just generating levels, the question of whether or not the levels created by this algorithm are interesting to human players is explored. A study was carried out comparing player attention while playing hand made levels versus their attention during procedurally generated levels. An auditory Stroop test was used to measure attention without disrupting play.
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The Effect of Curcumin Supplementation on Physical and Biological Indices of Delayed Onset Muscle Soreness and Inflammation Following Muscle Injury

The Effect of Curcumin Supplementation on Physical and Biological Indices of Delayed Onset Muscle Soreness and Inflammation Following Muscle Injury

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Date: May 2015
Creator: Venable, Adam Steven
Description: In this project, the effects of dietary polyphenols on exercise-induced muscle damage and vascular health are examined. Dietary polyphenols exert well-known anti-inflammatory effects; however, how these effects are realized with respect to vascular health and EIMD is relatively unknown. I begin by reviewing the available literature surrounding the impact of three dietary polyphenols (curcumin, catechins, and quercetin) on inflammation associated with EIMD. It is well established that their primary means of anti-inflammation is through alterations of NF-κB and AP-1 transcription activities. Given this, their inclusion into training strategies seems reasonable. Consistent evidence is presented making a case for the anti-inflammatory effects of dietary polyphenols following EIMD. I follow this review up by completing an in-depth study on the consumption of curcumin prior to EIMD. I found curcumin (1000 mg/day) can reduce subjective soreness and decrease inflammation compared to placebo controls. To further understand the effects of dietary polyphenols on health, I investigate the effects of a four-week supplementation period of cocoa (catechins) on vascular. I concluded that atherogenic risk in obese women is reduced after consumption of cocoa. In addition to these experimental projects, I developed two novel methods that can be used to investigate vascular health (EMP concentration) and ...
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Ta/v\am: Real-time Audio/video Scrubbing Tools for Analysis of Multimedia and G®¡nd

Ta/v\am: Real-time Audio/video Scrubbing Tools for Analysis of Multimedia and G®¡nd

Date: May 2015
Creator: Tramte, Daniel Albert
Description: tA/v\Am (the Audio/Video Analysis Machine) is an interactive analysis engine optimized for audio/visual mediums, such as film, video games, and music. I designed tA/v\Am to allow users to pace the playback speed of videos containing sub-title style analytical text, without affecting the pitch content of the audio. The software affords writers the opportunity to display the relevant sensory data (i.e., analytical text and sound/visual media) more efficiently than the paper format. It also serves as a flexible medium; the writer may, for example, compress extensive text into a short amount of time, causing the reader to pause or slow down the rate of the video and thus suspending him/her in the sensorial moment which the writer describes. G®¡ND for Alto Saxophone, Percussion & Electronics is an exploration of the tipping point between signal and noise. Through tablature notation, MIR tools, granular synthesis, and the deconstruction of the saxophone, I have assembled a palette of inordinately contrasting sounds and threaded them together based on action profiles obtained by computer assisted analysis. With them, I have set varying physical conditions of friction that dictates whether the sonic energy is to become focused to one resonant point, or distributed equally/randomly throughout the spectrum ...
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Vanishing Act

Vanishing Act

Date: May 2015
Creator: Pryor, Caitlin
Description: This dissertation is comprised of a collection of poems preceded by a critical preface. The preface reconsiders the value of discontinuous poetic forms and advocates a return to lyric as an antidote to the toxic aspects of what Tony Hoagland terms “the skittery poem of our moment.” I consider poems by Wendy Xu, Kevin Prufer, Sharon Olds, and Stephen Dunn in depth to facilitate a discussion about the value of a more centrist position between the poles of supreme discontinuity and totalizing continuity. Though poets working in discontinuous forms are rightly skeptical of the hierarchies that govern narrative and linear forms, as Czesław Miłosz notes in The Witness of Poetry, “a poet discovers a secret, namely that he can be faithful to real things only by arranging them hierarchically.” In my own poems, I make use of the hierarchies of ordered perception in lyric and narrative forms to faithfully illuminate the collapsed structures of my own family history in the shadow of Detroit. I practice the principles I advocate in the preface, using a continuous form to address fractured realities in a busy, disordered age when poets often seek forms as fragmented as their perceptions. These poems are distinctly American, ...
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An Application of Marxian and Weberian Theories of Capitalism: the Emergence of Big Businesses in the United States, 1861 to 1890

An Application of Marxian and Weberian Theories of Capitalism: the Emergence of Big Businesses in the United States, 1861 to 1890

Date: May 2015
Creator: Magness, Penny J.
Description: This study was an examination of businesses that became big businesses in the United States during the time period between the years of 1861 and 1890, a period of time frequently referred to as the “big business era.” The purpose of the study was to identify actions taken by businesses that enabled them to become and remain big businesses. A secondary purpose of the study was to show that these actions were explained by theories of Karl Marx and Max Weber. The results of the study showed that businesses which took specific actions were able to become and remain big businesses and these actions were explained by the theories of Marx and Weber. The results of the study demonstrate the ability of classical sociological theory to explain macro-level social change.
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Investigation on Segmentation, Recognition and 3D Reconstruction of Objects Based on Lidar Data Or Mri

Investigation on Segmentation, Recognition and 3D Reconstruction of Objects Based on Lidar Data Or Mri

Date: May 2015
Creator: Tang, Shijun
Description: Segmentation, recognition and 3D reconstruction of objects have been cutting-edge research topics, which have many applications ranging from environmental and medical to geographical applications as well as intelligent transportation. In this dissertation, I focus on the study of segmentation, recognition and 3D reconstruction of objects using LiDAR data/MRI. Three main works are that (I). Feature extraction algorithm based on sparse LiDAR data. A novel method has been proposed for feature extraction from sparse LiDAR data. The algorithm and the related principles have been described. Also, I have tested and discussed the choices and roles of parameters. By using correlation of neighboring points directly, statistic distribution of normal vectors at each point has been effectively used to determine the category of the selected point. (II). Segmentation and 3D reconstruction of objects based on LiDAR/MRI. The proposed method includes that the 3D LiDAR data are layered, that different categories are segmented, and that 3D canopy surfaces of individual tree crowns and clusters of trees are reconstructed from LiDAR point data based on a region active contour model. The proposed method allows for delineations of 3D forest canopy naturally from the contours of raw LiDAR point clouds. The proposed model is suitable not ...
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Space and Spectrum Engineered High Frequency Components and Circuits

Space and Spectrum Engineered High Frequency Components and Circuits

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Date: May 2015
Creator: Arigong, Bayaner
Description: With the increasing demand on wireless and portable devices, the radio frequency front end blocks are required to feature properties such as wideband, high frequency, multiple operating frequencies, low cost and compact size. However, the current radio frequency system blocks are designed by combining several individual frequency band blocks into one functional block, which increase the cost and size of devices. To address these issues, it is important to develop novel approaches to further advance the current design methodologies in both space and spectrum domains. In recent years, the concept of artificial materials has been proposed and studied intensively in RF/Microwave, Terahertz, and optical frequency range. It is a combination of conventional materials such as air, wood, metal and plastic. It can achieve the material properties that have not been found in nature. Therefore, the artificial material (i.e. meta-materials) provides design freedoms to control both the spectrum performance and geometrical structures of radio frequency front end blocks and other high frequency systems. In this dissertation, several artificial materials are proposed and designed by different methods, and their applications to different high frequency components and circuits are studied. First, quasi-conformal mapping (QCM) method is applied to design plasmonic wave-adapters and couplers ...
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Synthesis of Peropyrene and Tetracene Derivatives for Photochemical Applications

Synthesis of Peropyrene and Tetracene Derivatives for Photochemical Applications

Date: May 2015
Creator: Rodríguez López, Marco Tulio
Description: A novel route for the synthesis of the polycyclic aromatic hydrocarbon peropyrene (Pp) is reported along with the efforts to synthesize derivatives of Pp, 2,2′- and 5,5′-linked tetracene dimers as candidates for study as singlet fission materials in photovoltaic devices. Peropyrene was synthesized by the McMurry coupling conditions from phenalenone and low-valent titanium species. The crystal structure of Pp is formed by π-stacked molecular pairs in a herringbone arrangement. The direct functionalization of Pp was studied, and several indirect methods for the functionalization of Pp via phenalenone derivatives are reported. Nucleophilicly dependent, regioselective Michael addition pathways for phenalenone are described. Phenalenone forms a nucleophilic complex with bispinacolatodiboron and yields chiral 3,3′-linked phenalenone dimers and a bicyclo[3.2.1]octane derivative product of an unusual 3,4 addition. An active complex product of phenalenone and (dimethylphenylsilyl)boronic acid pinacolic ester forms Pp directly. The synthesis of 2,2′- and 5,5′-linked tetracene dimers led to the study of the reduction of 1-arylprop-2-yn-1-ol derivatives via TFA-catalyzed hydride transfer from triethylsilane. Substrates with terminal and TMS-protected alkynes showed silane exchange upon reduction. A TMS-protected, terminal alkyne became triethylsilyl-protected by about 50% whereas only triethylsilyl-protected, terminal alkyne was observed from the reduction of an unprotected, terminal alkyne. A new conformational polymorph ...
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