Current Search: Imagery (x)
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Title
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AN ALGORITHM FOR DETERMINING SATELLITE ATTITUDE BY COMPARING PHYSICAL FEATURE MODELS TO EDGES DETECTED IN SATELLITE OR GROUND-BASED TELESCOPE IMAGERY.
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Creator
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Reinhart, Eric, Johnson, Roger, University of Central Florida
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Abstract / Description
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This thesis discusses the development and performance of an algorithm created to calculate satellite attitude based on the comparison of satellite "physical feature" models to information derived from edge detection performed on imagery of the satellite. The quality of this imagery could range from the very clear, close-up imagery that may come from an unmanned satellite servicing mission to the faint, unclear imagery that may come from a ground-based telescope investigating a satellite...
Show moreThis thesis discusses the development and performance of an algorithm created to calculate satellite attitude based on the comparison of satellite "physical feature" models to information derived from edge detection performed on imagery of the satellite. The quality of this imagery could range from the very clear, close-up imagery that may come from an unmanned satellite servicing mission to the faint, unclear imagery that may come from a ground-based telescope investigating a satellite anomaly. Satellite "physical feature" models describe where an edge is likely to appear in an image. These are usually defined by physical edges on the structure of the satellite or areas where there are distinct changes in material property. The theory behind this concept is discussed as well as two different approaches to implement it. Various simple examples are used to demonstrate the feasibility of the concept. These examples are well-controlled image simulations of simple physical models with known attitude. The algorithm attempts to perform the edge detection and edge registration of the simulated image and calculate the most likely attitude. Though complete autonomy was not achieved during this effort, the concept and approach show applicability.
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Date Issued
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2007
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Identifier
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CFE0001942, ucf:47450
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFE0001942
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Title
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THE EFFECTS OF ALCOHOL BASED CUES: VIRTUAL REALITY VERSUS GUIDED IMAGERY.
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Creator
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Labriola, Nicole, Cassisi, Jeffrey, University of Central Florida
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Abstract / Description
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The use of Virtual Reality (VR) and Imagery have been utilized in psychological practices and treatment. VR has recently been the focus of research with treatments for post traumatic stress disorder, substance abuse, and phobias, among other social and behavioral issues. VR allows the researcher to create realistic controlled environments in which they are able to manipulate the experiment. Imagery permits the individual to imagine and recall scenarios from their past in order to create a...
Show moreThe use of Virtual Reality (VR) and Imagery have been utilized in psychological practices and treatment. VR has recently been the focus of research with treatments for post traumatic stress disorder, substance abuse, and phobias, among other social and behavioral issues. VR allows the researcher to create realistic controlled environments in which they are able to manipulate the experiment. Imagery permits the individual to imagine and recall scenarios from their past in order to create a more personal environment. This experiment aimed to expand upon VR practices and treatment in regards to alcohol research. In this experiment, 70 participants, 39 females and 31 males, were exposed to two VR alcohol and two Imagery alcohol cue environments. Subject craving and psychophysiological measures were taken across all four scenes and all baselines. Overall, craving measures demonstrated that female nondrinkers developed higher cravings during Imagery. Conversely, male social drinkers demonstrated higher cravings during VR. This study supports the use of VR environments in the study of alcohol cue reactivity.
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Date Issued
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2011
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Identifier
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CFH0003813, ucf:44723
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFH0003813
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Title
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VARIABLE RESOLUTION & DIMENSIONAL MAPPING FOR 3D MODEL OPTIMIZATION.
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Creator
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Venezia, Joseph, Kasparis, Takis, University of Central Florida
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Abstract / Description
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Three-dimensional computer models, especially geospatial architectural data sets, can be visualized in the same way humans experience the world, providing a realistic, interactive experience. Scene familiarization, architectural analysis, scientific visualization, and many other applications would benefit from finely detailed, high resolution, 3D models. Automated methods to construct these 3D models traditionally has produced data sets that are often low fidelity or inaccurate; otherwise,...
Show moreThree-dimensional computer models, especially geospatial architectural data sets, can be visualized in the same way humans experience the world, providing a realistic, interactive experience. Scene familiarization, architectural analysis, scientific visualization, and many other applications would benefit from finely detailed, high resolution, 3D models. Automated methods to construct these 3D models traditionally has produced data sets that are often low fidelity or inaccurate; otherwise, they are initially highly detailed, but are very labor and time intensive to construct. Such data sets are often not practical for common real-time usage and are not easily updated. This thesis proposes Variable Resolution & Dimensional Mapping (VRDM), a methodology that has been developed to address some of the limitations of existing approaches to model construction from images. Key components of VRDM are texture palettes, which enable variable and ultra-high resolution images to be easily composited; texture features, which allow image features to integrated as image or geometry, and have the ability to modify the geometric model structure to add detail. These components support a primary VRDM objective of facilitating model refinement with additional data. This can be done until the desired fidelity is achieved as practical limits of infinite detail are approached. Texture Levels, the third component, enable real-time interaction with a very detailed model, along with the flexibility of having alternate pixel data for a given area of the model and this is achieved through extra dimensions. Together these techniques have been used to construct models that can contain GBs of imagery data.
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Date Issued
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2009
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Identifier
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CFE0002837, ucf:48081
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFE0002837
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Title
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Motor imagery classification using sparse representation of EEG signals.
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Creator
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Saidi, Pouria, Atia, George, Vosoughi, Azadeh, Berman, Steven, University of Central Florida
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Abstract / Description
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The human brain is unquestionably the most complex organ of the body as it controls and processes its movement and senses. A healthy brain is able to generate responses to the signals it receives, and transmit messages to the body. Some neural disorders can impair the communication between the brain and the body preventing the transmission of these messages. Brain Computer Interfaces (BCIs) are devices that hold immense potential to assist patients with such disorders by analyzing brain...
Show moreThe human brain is unquestionably the most complex organ of the body as it controls and processes its movement and senses. A healthy brain is able to generate responses to the signals it receives, and transmit messages to the body. Some neural disorders can impair the communication between the brain and the body preventing the transmission of these messages. Brain Computer Interfaces (BCIs) are devices that hold immense potential to assist patients with such disorders by analyzing brain signals, translating and classifying various brain responses, and relaying them to external devices and potentially back to the body. Classifying motor imagery brain signals where the signals are obtained based on imagined movement of the limbs is a major, yet very challenging, step in developing Brain Computer Interfaces (BCIs). Of primary importance is to use less data and computationally efficient algorithms to support real-time BCI. To this end, in this thesis we explore and develop algorithms that exploit the sparse characteristics of EEGs to classify these signals. Different feature vectors are extracted from EEG trials recorded by electrodes placed on the scalp.In this thesis, features from a small spatial region are approximated by a sparse linear combination of few atoms from a multi-class dictionary constructed from the features of the EEG training signals for each class. This is used to classify the signals based on the pattern of their sparse representation using a minimum-residual decision rule.We first attempt to use all the available electrodes to verify the effectiveness of the proposed methods. To support real time BCI, the electrodes are reduced to those near the sensorimotor cortex which are believed to be crucial for motor preparation and imagination.In a second approach, we try to incorporate the effect of spatial correlation across the neighboring electrodes near the sensorimotor cortex. To this end, instead of considering one feature vector at a time, we use a collection of feature vectors simultaneously to find the joint sparse representation of these vectors. Although we were not able to see much improvement with respect to the first approach, we envision that such improvements could be achieved using more refined models that can be subject of future works. The performance of the proposed approaches is evaluated using different features, including wavelet coefficients, energy of the signals in different frequency sub-bands, and also entropy of the signals. The results obtained from real data demonstrate that the combination of energy and entropy features enable efficient classification of motor imagery EEG trials related to hand and foot movements. This underscores the relevance of the energies and their distribution in different frequency sub-bands for classifying movement-specific EEG patterns in agreement with the existence of different levels within the alpha band. The proposed approach is also shown to outperform the state-of-the-art algorithm that uses feature vectors obtained from energies of multiple spatial projections.
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Date Issued
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2015
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Identifier
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CFE0005882, ucf:50884
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFE0005882
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Title
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THE EFFECT OF WEIGHT AND SIZE ON MENTAL ROTATION.
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Creator
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Furtak, Luke, Sims, Valerie, University of Central Florida
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Abstract / Description
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Shepard and Metzler (1971) argued that mental rotation is analogous to the real world in that people imagine the rotation of an object as if it were being physically rotated. This study tested this assertion by exposing participants to physical shapes that increased in size and weight. Participants interacted with blocks designed after Shepard and Metzler mental rotation size that differed in size and weight then performed subsequent mental rotation. We found no difference in reaction time...
Show moreShepard and Metzler (1971) argued that mental rotation is analogous to the real world in that people imagine the rotation of an object as if it were being physically rotated. This study tested this assertion by exposing participants to physical shapes that increased in size and weight. Participants interacted with blocks designed after Shepard and Metzler mental rotation size that differed in size and weight then performed subsequent mental rotation. We found no difference in reaction time but found that increased size reduced accuracy. We discuss the implications of this study as they pertain to embodied cognition.
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Date Issued
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2014
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Identifier
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CFH0004711, ucf:45399
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFH0004711
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Title
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THE EDGE OF THINGS.
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Creator
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Koman, Robin, Hubbard, Susan, University of Central Florida
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Abstract / Description
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ABSTRACT The Edge of Things is what I like to call a love song to the dispossessed. Each of the eight stories in the collection is an examination of the lives of women who are exiled from modern American consumer culture, whether by circumstance or by choice. This separation brings them heartache, risk, and sometimes even hope. The collection is fueled by the landscape of Florida, observed at its most beautiful and most corrupted, from highways, landfills, and trailer parks to housing...
Show moreABSTRACT The Edge of Things is what I like to call a love song to the dispossessed. Each of the eight stories in the collection is an examination of the lives of women who are exiled from modern American consumer culture, whether by circumstance or by choice. This separation brings them heartache, risk, and sometimes even hope. The collection is fueled by the landscape of Florida, observed at its most beautiful and most corrupted, from highways, landfills, and trailer parks to housing developments, gardens, and secret forests. Setting is a constant source of revelation, the external landscape offering insight into the internal struggles of the characters. Regardless of age, race, or sexual orientation, the women of The Edge of Things find themselves moving toward, or just past, incredible changes in their lives. In "Seed of the Golden Mango", "Raising the Dead", and "The Girl Who Loved Bugs", young women deal with the loss of loved ones. The women of "Zyczenie", "It Cannot Hold", and "Wasp Honey" must deal with old losses in order to survive the realities of the outside world that they have long ignored. "The Edge of Things" and "The Secret Letters" both deal with love, and the consequences of an inability to communicate. In each of these tales I hope to present unforgettable characters, women whose journeys will haunt, reminding readers that on some level, the love song of the dispossessed calls to us all.
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Date Issued
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2008
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Identifier
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CFE0002024, ucf:47615
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFE0002024
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Title
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COMPLEMENTARY AND INTEGRATIVE THERAPIES FOR THE TREATMENT OF FIBROMYALGIA.
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Creator
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Hushla, Jennifer, Burr, Joyce, Forlaw, Loretta, University of Central Florida
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Abstract / Description
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Fibromyalgia syndrome (FMS) is a debilitating and chronic condition with an array of symptoms, the most distinguishable being widespread pain. FMS patients experience a marked decrease in quality of life related to intensity of symptoms. Current treatment options and pharmaceuticals do not provide adequate relief. This thesis examines integrative and complementary therapy options for symptom management and improvement of quality of life for FMS patients. A literature review was conducted of...
Show moreFibromyalgia syndrome (FMS) is a debilitating and chronic condition with an array of symptoms, the most distinguishable being widespread pain. FMS patients experience a marked decrease in quality of life related to intensity of symptoms. Current treatment options and pharmaceuticals do not provide adequate relief. This thesis examines integrative and complementary therapy options for symptom management and improvement of quality of life for FMS patients. A literature review was conducted of English current research using multiple databases. Findings indicate mindful movement therapies (MMT) such as yoga and tai chi, mindfulness, sensory-related relaxation techniques with guided imagery, and cognitive behavioral therapy (CBT) provided some relief and increased in perceived quality of life (QoL).
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Date Issued
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2018
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Identifier
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CFH2000367, ucf:45900
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFH2000367
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Title
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Nothing Buried Stays Buried.
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Creator
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Porven, Stephanie, Thaxton, Terry, Uttich, Laurie, Stap, Donald, University of Central Florida
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Abstract / Description
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Nothing Buried Stays Buried is a collection of poems that embraces raw imagery, threads of magical realism, and allusions to classical mythology in an attempt to make sense of the tangible and intangible losses experienced by its speakers. Told through the voices of confessional speakers who struggle with loneliness, identity, faith, and death, the collection aims to delve into contrasting themes that have long been perpetuated by Greek and Roman mythology: passionate love and violent death,...
Show moreNothing Buried Stays Buried is a collection of poems that embraces raw imagery, threads of magical realism, and allusions to classical mythology in an attempt to make sense of the tangible and intangible losses experienced by its speakers. Told through the voices of confessional speakers who struggle with loneliness, identity, faith, and death, the collection aims to delve into contrasting themes that have long been perpetuated by Greek and Roman mythology: passionate love and violent death, liberation and violation, the natural alongside the celestial. Poems such as (")What You Left Behind,(") (")Loneliness Braids My Hair,(") and (")If You Die First(") dwell on the idea of loss not as a past occurrence, but as an active emotional experience that can haunt an individual, follow them throughout their daily life and into their dreams like their shadow. Speakers within the collection reexamine memories of withered relationships and explore imaginary realms (a floating island and the second circle of hell, for example) in their search for answers to the questions: What do we make of loss? And how do we go on after something or someone has been lost to us: a pair of saltwater earrings, a loved one, a part of ourselves which has left a throbbing absence we still carry in our hearts?
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Date Issued
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2018
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Identifier
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CFE0007076, ucf:52012
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFE0007076
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Title
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Destination Image and Tourist's Imagination: The Forgotten Component.
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Creator
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Khalilzadeh, Jalayer, Pizam, Abraham, Fyall, Alan, Tasci, Asli, Hancock, Peter, University of Central Florida
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Abstract / Description
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The objectives of this dissertation was to 1) develop a comprehensive scale to measure visitors' imagination, 2) investigate the structural relationship between imagination and tourism destination image (TDI) components of cognitive, affective, and conative, 3) compare and contrast the various qualities of vividness, richness, saliency, control, and spatial between imagination and prospection, and 4) study the impact of different information sources on the evolving process of prospection to...
Show moreThe objectives of this dissertation was to 1) develop a comprehensive scale to measure visitors' imagination, 2) investigate the structural relationship between imagination and tourism destination image (TDI) components of cognitive, affective, and conative, 3) compare and contrast the various qualities of vividness, richness, saliency, control, and spatial between imagination and prospection, and 4) study the impact of different information sources on the evolving process of prospection to imagination. By conducting four different studies and seven data collection phases, the imagination scale was developed, validated, and utilized to test the proposed structural and differential hypotheses. In study 1, the phenomenology approach was employed and through a series of interviews, the internal experience of the imagination process was extracted. In study 2, which is composed of two focus groups, the potential manifest variables to measure imagination/prospection were developed and the structure of the questionnaire was designed. In study 3, through 3 data collection phases, two versions of long and short imagination scale questionnaire were validated and the structural relationships between imagination and destination image was investigated. In the final study, utilizing experimental design, hypotheses related to five qualities of imagination were compared to those of prospection. Finally, by adopting an exploratory approach, the impact of different information sources on imagination was investigated. The results of this dissertation indicated that the imagination scale is a reliable and valid scale to be used in various hospitality and tourism consumption contexts. It shows a high discriminant validity with TDI and structurally moderates the inter-relationships of the TDI components. In addition, findings of this dissertation support the theoretical discussions on the differences between imagination and prospection. Finally, the results revealed significant distinctions among image, video, and textual information sources regarding their impact on the quality of the mental image.
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Date Issued
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2018
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Identifier
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CFE0007207, ucf:52279
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFE0007207
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Title
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THE SEVEN DEADLY SINS IN LA VIDA DE LAZARILLO DE TORMES Y DE SUS FORTUNAS Y ADVERSIDADES.
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Creator
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Giblin, John, Garcia, Martha, University of Central Florida
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Abstract / Description
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To the modern critic, La vida de Lazarillo de Tormes y de sus aventuras y adversidades poses many problems. One cannot arrive at the book's precise meaning because the author remains unknown. If critics were to know who wrote the book, they would identify similarities between the book and the author's life to approximate the book's moral, or its lack of one. Additionally, some commentators view the book as incomplete or unfinished; although the author developed the first three tratados, the...
Show moreTo the modern critic, La vida de Lazarillo de Tormes y de sus aventuras y adversidades poses many problems. One cannot arrive at the book's precise meaning because the author remains unknown. If critics were to know who wrote the book, they would identify similarities between the book and the author's life to approximate the book's moral, or its lack of one. Additionally, some commentators view the book as incomplete or unfinished; although the author developed the first three tratados, the final four tratados seem short and incomplete. Does this diminish the book's purpose? Can the readers still fruitfully discover the book's meaning in an incomplete story? Modern critics have utilized the book's artistic elements, such as its linguistic structure, themes and temporal structure, to arrive at an interpretation of it. Others have compared the book with classical European folklore and other period literary works. This thesis proposes a synthesis of the latter two approaches. This thesis will analyze, using irony and foreshadowing, how the seven tratados correlate or fail to correlate with the seven deadly sins.
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Date Issued
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2011
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Identifier
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CFH0003769, ucf:44759
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFH0003769