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Title: DESIGN FOR AUDITORY DISPLAYS: IDENTIFYING TEMPORAL AND SPATIAL INFORMATION CONVEYANCE PRINCIPLES.
Creator: Ahmad, Ali, Stanney, Kay, University of Central Florida
Abstract / Description: Designing auditory interfaces is a challenge for current human-systems developers. This is largely due to a lack of theoretical guidance for directing how best to use sounds in today's visually-rich graphical user interfaces. This dissertation provided a framework for guiding the design of audio interfaces to enhance human-systems performance. This doctoral research involved reviewing the literature on conveying temporal and spatial information using audio, using this knowledge to build...
Show moreDesigning auditory interfaces is a challenge for current human-systems developers. This is largely due to a lack of theoretical guidance for directing how best to use sounds in today's visually-rich graphical user interfaces. This dissertation provided a framework for guiding the design of audio interfaces to enhance human-systems performance. This doctoral research involved reviewing the literature on conveying temporal and spatial information using audio, using this knowledge to build three theoretical models to aid the design of auditory interfaces, and empirically validating select components of the models. The three models included an audio integration model that outlines an end-to-end process for adding sounds to interactive interfaces, a temporal audio model that provides a framework for guiding the timing for integration of these sounds to meet human performance objectives, and a spatial audio model that provides a framework for adding spatialization cues to interface sounds. Each model is coupled with a set of design guidelines theorized from the literature, thus combined, the developed models put forward a structured process for integrating sounds in interactive interfaces. The developed models were subjected to a three phase validation process that included review by Subject Matter Experts (SMEs) to assess the face validity of the developed models and two empirical studies. For the SME review, which assessed the utility of the developed models and identified opportunities for improvement, a panel of three audio experts was selected to respond to a Strengths, Weaknesses, Opportunities, and Threats (SWOT) validation questionnaire. Based on the SWOT analysis, the main strengths of the models included that they provide a systematic approach to auditory display design and that they integrate a wide variety of knowledge sources in a concise manner. The main weaknesses of the models included the lack of a structured process for amending the models with new principles, some branches were not considered parallel or completely distinct, and lack of guidance on selecting interface sounds. The main opportunity identified by the experts was the ability of the models to provide a seminal body of knowledge that can be used for building and validating auditory display designs. The main threats identified by the experts were that users may not know where to start and end with each model, the models may not provide comprehensive coverage of all uses of auditory displays, and the models may act as a restrictive influence on designers or they may be used inappropriately. Based on the SWOT analysis results, several changes were made to the models prior to the empirical studies. Two empirical evaluation studies were conducted to test the theorized design principles derived from the revised models. The first study focused on assessing the utility of audio cues to train a temporal pacing task and the second study combined both temporal (i.e., pace) and spatial audio information, with a focus on examining integration issues. In the pace study, there were four different auditory conditions used for training pace: 1) a metronome, 2) non-spatial auditory earcons, 3) a spatialized auditory earcon, and 4) no audio cues for pace training. Sixty-eight people participated in the study. A pre- post between subjects experimental design was used, with eight training trials. The measure used for assessing pace performance was the average deviation from a predetermined desired pace. The results demonstrated that a metronome was not effective in training participants to maintain a desired pace, while, spatial and non-spatial earcons were effective strategies for pace training. Moreover, an examination of post-training performance as compared to pre-training suggested some transfer of learning. Design guidelines were extracted for integrating auditory cues for pace training tasks in virtual environments. In the second empirical study, combined temporal (pacing) and spatial (location of entities within the environment) information were presented. There were three different spatialization conditions used: 1) high fidelity using subjective selection of a "best-fit" head related transfer function, 2) low fidelity using a generalized head-related transfer function, and 3) no spatialization. A pre- post between subjects experimental design was used, with eight training trials. The performance measures were average deviation from desired pace and time and accuracy to complete the task. The results of the second study demonstrated that temporal, non-spatial auditory cues were effective in influencing pace while other cues were present. On the other hand, spatialized auditory cues did not result in significantly faster task completion. Based on these results, a set of design guidelines was proposed that can be used to direct the integration of spatial and temporal auditory cues for supporting training tasks in virtual environments. Taken together, the developed models and the associated guidelines provided a theoretical foundation from which to direct user-centered design of auditory interfaces.
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Date Issued: 2007
Identifier: CFE0001719, ucf:47317
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001719

Title: AFFECTIVE DESIGN IN TECHNICAL COMMUNICATION.
Creator: Rosen, Michael, Kitalong, Karla, University of Central Florida
Abstract / Description: Traditional human-computer interaction (HCI) is based on 'cold' models of user cognition; that is, models of users as purely rational beings based on the information processing metaphor; however, an emerging perspective suggests that for the field of HCI to mature, its practitioners must adopt models of users that consider broader human needs and capabilities. Affective design is an umbrella term for research and practice being conducted in diverse domains, all with the common thread of...
Show moreTraditional human-computer interaction (HCI) is based on 'cold' models of user cognition; that is, models of users as purely rational beings based on the information processing metaphor; however, an emerging perspective suggests that for the field of HCI to mature, its practitioners must adopt models of users that consider broader human needs and capabilities. Affective design is an umbrella term for research and practice being conducted in diverse domains, all with the common thread of integrating emotional aspects of use into the creation of information products. This thesis provides a review of the current state of the art in affective design research and practice to technical communicators and others involved in traditional HCI and usability enterprises. This paper is motivated by the developing technologies and the growing complexity of interaction that demand a more robust notion of HCI that incorporates affect in an augmented and holistic representation of the user and situated use.
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Date Issued: 2005
Identifier: CFE0000590, ucf:46474
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000590

Title: EFFECTS OF VOLUNTARY CONTROL ON PERFORMANCE RESPONSE UNDER STRESS.
Creator: Morris, Christina Shawn, Hancock, Peter A., University of Central Florida
Abstract / Description: Recent stressful environments within military and non-military domains are producing a new challenge for the lab-based study of stress on task performance, one that requires knowledge of underlying cognitive-motivational and goal orientation factors. Results of recent stress on task performance research traditionally employ metaphorical explanations (i.e., resource theory) in order to rapidly apply stimulus-response outcomes to the real world counterparts. This dissertation provides an...
Show moreRecent stressful environments within military and non-military domains are producing a new challenge for the lab-based study of stress on task performance, one that requires knowledge of underlying cognitive-motivational and goal orientation factors. Results of recent stress on task performance research traditionally employ metaphorical explanations (i.e., resource theory) in order to rapidly apply stimulus-response outcomes to the real world counterparts. This dissertation provides an alternative perspective about these metaphorical, or black box, interpretations and reveals how they may be confounded with respect to the intended real world counterpart. To examine how voluntary human control can influence traditional stress/no-stress research findings, traditional as well as exploratory paradigms were presented. Both noise and time pressure conditions produced significant differences between experimental and control groups on visual discrimination. However, when analogous cash payment-contingency conditions were employed, the traditional stress/no-stress findings were not evident. In addition, a second experiment revealed that this trend of differences (and non-differences) held consistently over 30 minutes of interrupted task performance time. This study indicates the importance of developing more diagnostic measures that include assessments of how the differences between participants' and the generalized operators' goals and motivations may alter results in stressful task environments.
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Date Issued: 2004
Identifier: CFE0000019, ucf:46134
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000019

Title: INDIVIDUAL PREFERENCES IN THE USE OF AUTOMATION.
Creator: Thropp, Jennifer, Hancock, Peter, University of Central Florida
Abstract / Description: As system automation increases and evolves, the intervention of the supervising operator becomes ever less frequent but ever more crucial. The adaptive automation approach is one in which control of tasks dynamically shifts between humans and machines, being an alternative to traditional static allocation in which task control is assigned during system design and subsequently remains unchanged during operations. It is proposed that adaptive allocation should adjust to the individual operators...
Show moreAs system automation increases and evolves, the intervention of the supervising operator becomes ever less frequent but ever more crucial. The adaptive automation approach is one in which control of tasks dynamically shifts between humans and machines, being an alternative to traditional static allocation in which task control is assigned during system design and subsequently remains unchanged during operations. It is proposed that adaptive allocation should adjust to the individual operators' characteristics in order to improve performance, avoid errors, and enhance safety. The roles of three individual difference variables relevant to adaptive automation are described: attentional control, desirability of control, and trait anxiety. It was hypothesized that these traits contribute to the level of performance for target detection tasks for different levels of difficulty as well as preferences for different levels of automation. The operators' level of attentional control was inversely proportional to automation level preferences, although few objective performance changes were observed. The effects of sensory modality were also assessed, and auditory signal detection was superior to visual signal detection. As a result, the following implications have been proposed: operators generally preferred either low or high automation while neglecting the intermediary level; preferences and needs for automation may not be congruent; and there may be a conservative response bias associated with high attentional control, notably in the auditory modality.
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Date Issued: 2006
Identifier: CFE0001096, ucf:46771
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001096

Title: THE GREAT DIVIDE: CITIZENSHIP AND STATELESSNESS.
Creator: Belton, Kristy, Jungblut, Bernadette, University of Central Florida
Abstract / Description: This thesis investigates the implications of State control of citizenship upon the individual's ability to choose membership in a given State polity. It briefly examines how States gained absolute control over the granting, denying and revoking of citizenship and demonstrates how the acquisition of citizenship and statelessness are both State-determined statuses. The repercussions of statelessness at the individual, regional and global levels are presented to demonstrate the severity of being...
Show moreThis thesis investigates the implications of State control of citizenship upon the individual's ability to choose membership in a given State polity. It briefly examines how States gained absolute control over the granting, denying and revoking of citizenship and demonstrates how the acquisition of citizenship and statelessness are both State-determined statuses. The repercussions of statelessness at the individual, regional and global levels are presented to demonstrate the severity of being unable to choose a citizenship. Efforts made by States and the international community to prevent and reduce statelessness are examined in order to illustrate the lack of prioritization given to the subject of statelessness, and possible courses of action for States and the United Nations to undertake in order to better address this topic are introduced. The thesis concludes that citizenship is a human right and that States need to consider individual choice concerning citizenship matters. If such choice is not taken into account with regard to State membership, States will be performing a disservice to citizens, the stateless, and the system of States.
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Date Issued: 2005
Identifier: CFE0000851, ucf:46671
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000851

Title: WARNING COMPLIANCE: EFFECTS OF STRESS AND WORKING MEMORY.
Creator: Helmick-Rich, Jessica, Hancock, Peter A, University of Central Florida
Abstract / Description: ABSTRACT This study investigated the effects of cross-modality warning presentation and retention in a dual-task paradigm in a simulated military environment under various task-induced stress levels. It was also intended to determine what role working memory played in the mode of warning presentation that resulted in the highest retention and subsequent compliance. An all within participant design was created in order to determine if scores on working memory span tasks predicted performance...
Show moreABSTRACT This study investigated the effects of cross-modality warning presentation and retention in a dual-task paradigm in a simulated military environment under various task-induced stress levels. It was also intended to determine what role working memory played in the mode of warning presentation that resulted in the highest retention and subsequent compliance. An all within participant design was created in order to determine if scores on working memory span tasks predicted performance across the varying forms of warning presentation. Furthermore, task-induced stress levels were varied over the course of the experiment to identify if workload transitions affected performance. Results revealed that when the presentation format and the response format matched (e.g., verbal-verbal), behavioral compliance was greater then when presentation and response format were mismatched (e.g., verbal-pictorial). Thus, it is not necessarily the presentation type that affects compliance, but the combination of presentation and response mode. Analysis also revealed that the pictorial-pictorial warning combination resulted in greater behavioral compliance compared to verbal-verbal or written-written combinations. The format of warning presentation did not affect performance on the operational tasks as predicted. Thus, the visual/spatial operational task, regardless of its complexity was not interrupted in timesharing with intra-modal warning presentations or cross-modal time-sharing. As predicted, task based stress affected the WCCOM task in all experimental procedures. Results further revealed that as task demand increased, performance on the WCCOM task decreased. Task demand did affect the operational tasks, the shooting and the navigation tasks. The shooting task, which was less complex than the navigation task was not affected by lower levels of task demand, but at the greatest level of demand (eight warnings) performance in the operational task, degraded. Degradations in performance on the more complex task, the navigation task, materialized at a moderate level of task demand (four warnings). For subjective ratings, task demand did affect workload ratings. As the task demand increased, the subjective workload ratings also increased, revealing a true association between workload and subjective ratings. The working memory separability hypothesis was supported by the working memory span tasks, but consequently they were not predictive of the warning presentation format.
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Date Issued: 2005
Identifier: CFE0000725, ucf:46624
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000725

Title: WHEN THE CLOCKS STRIKE THIRTEEN: POLITICAL REPRESSION IN MODERN AMERICA (1990-2015).
Creator: Begani, Faiza, Knuckey, Jonathan, Sadri, Houman A., University of Central Florida
Abstract / Description: Abounding acts of repression committed in democracies have continued to be overlooked and under-analyzed by many researchers and scholars due to "democratic exceptionalism". As the United States enters yet another consecutive year of declining political satisfaction and freedom. It has become pertinent that as conflict study researchers, scholars, and readers alike that there is a basic understanding of coercion including acts that have been committed within our own countries. Countless...
Show moreAbounding acts of repression committed in democracies have continued to be overlooked and under-analyzed by many researchers and scholars due to "democratic exceptionalism". As the United States enters yet another consecutive year of declining political satisfaction and freedom. It has become pertinent that as conflict study researchers, scholars, and readers alike that there is a basic understanding of coercion including acts that have been committed within our own countries. Countless scholars have focused conflict study research on underdeveloped or emerging democracies, yet many have overlooked the seamy side of developed ones. This article aims to explain the relationship between the United States and state-sponsored repression from the 1990s to 2015. In hopes to better understand how variables like economic, social, and political vulnerabilities as well as race and sex influence repressive trends in the United States. In addition, this article hopes to extend the scope of conflict study research by including mass incarceration as a form of repression that has been used to control not only dissent but also satisfy the needs of elites to maintain a present state of affairs. This article tests various hypothesis to understand how repression continues to function in modern American society.
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Date Issued: 2018
Identifier: CFH2000410, ucf:45899
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000410

Title: THE IMPLICATIONS OF DOMESTIC PARTY IDEOLOGIES ON REFUGEE POLICY: A CASE STUDY OF BANGLADESH AND THE ROHINGYA.
Creator: Schiffer, Samuel S, Mirilovic, Nikola, University of Central Florida
Abstract / Description: Why do some political parties in Bangladesh discriminate against the Rohingya, while some do not? Much has been written about the conflict in Myanmar, but the plight of Rohingya in Bangladesh remains understudied. This lack of understanding is underscored by the five million Syrian refugees fleeing their own civil war that dominates the news and the attention of scholars. The Rohingya, however, are stateless: they are denied citizenship in their native Myanmar and are forced to find refuge in...
Show moreWhy do some political parties in Bangladesh discriminate against the Rohingya, while some do not? Much has been written about the conflict in Myanmar, but the plight of Rohingya in Bangladesh remains understudied. This lack of understanding is underscored by the five million Syrian refugees fleeing their own civil war that dominates the news and the attention of scholars. The Rohingya, however, are stateless: they are denied citizenship in their native Myanmar and are forced to find refuge in whichever country will take them. Much has been published that links immigration policy to security considerations and the national identity and ethnic homogeneity of the host country. I argue that it is the domestic politics of Bangladesh that directly influences the policies concerning, and subsequent treatment of, the Rohingya migrants. This leads back to the question I pose: why is it that some political parties in Bangladesh actively support the ethnic group while others actively discriminate against the Rohingya? I argue that it is the individual ideologies of that party that can be directly attributed to their stance on Rohingya. Using qualitative analysis, I measure how a party's foreign policy, social policy, and political ideology affects that organization's attitude toward Rohingya refugees. Understanding the largely political nature of refugee policy will allow policy-makers, intergovernmental organizations, and human rights groups to be better equipped to improve the conditions of, not only the Rohingya population, but other vulnerable refugee groups that seek safety in foreign states.
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Date Issued: 2018
Identifier: CFH2000307, ucf:45789
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000307

Title: A COMPARATIVE STUDY OF MEDICAL AND LITERARY REPRESENTATIONS OF SHELL SHOCK, 1914-50.
Creator: Das, Madison, Kane, Louise, University of Central Florida
Abstract / Description: This thesis explores shell shock--a common but misunderstood disorder seen in soldiers of World War One--through a Medical Humanities framework. Chapter 1 conducts a traditional medical review of scientific articles published on the pathology, symptoms, and treatment of shell shock between 1914-50. Chapter 2 builds upon this by offering a literary reading of Rebecca West's novel, The Return of the Soldier, which was published as the war drew to a close in 1918. The reading of West draws upon...
Show moreThis thesis explores shell shock--a common but misunderstood disorder seen in soldiers of World War One--through a Medical Humanities framework. Chapter 1 conducts a traditional medical review of scientific articles published on the pathology, symptoms, and treatment of shell shock between 1914-50. Chapter 2 builds upon this by offering a literary reading of Rebecca West's novel, The Return of the Soldier, which was published as the war drew to a close in 1918. The reading of West draws upon the medical research detailed in Chapter 1 to offer new conclusions about Chris's shell shock. The thesis shows how taking an interdisciplinary approach to shell shock enables the development of new perspectives of and approaches to shell shock, its history and significance, and its links to present-day mental health conditions such as post-traumatic stress disorder (PTSD).
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Date Issued: 2019
Identifier: CFH2000543, ucf:45655
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000543

Title: PSYCHOSOCIAL STATUS AND HEALTH OUTCOMES IN OLDER ADULTS LIVING WITH HUMAN IMMUNODEFICIENCY VIRUS.
Creator: Fernandez, Amanda, D'Amato-Kubiet, Leslee, University of Central Florida
Abstract / Description: Purpose: To recognize and raise awareness about the psychosocial status and health outcomes in older adults living with HIV. Method: A literature search was conducted from the disciplines of nursing and medicine using the CINAHL, PubMed, and Medline databases. Inclusion criteria: articles exploring older adults who are HIV positive and factors related to depression, suicide and available healthcare resources. Exclusion criteria: articles including individuals under the age of 50 infected with...
Show morePurpose: To recognize and raise awareness about the psychosocial status and health outcomes in older adults living with HIV. Method: A literature search was conducted from the disciplines of nursing and medicine using the CINAHL, PubMed, and Medline databases. Inclusion criteria: articles exploring older adults who are HIV positive and factors related to depression, suicide and available healthcare resources. Exclusion criteria: articles including individuals under the age of 50 infected with HIV/AIDS and articles focused entirely on physiologic principles of HIV/AIDS. Results: In older adults living with HIV/AIDS, the literature review disclosed a comprehensive gap between identifying this age group as 'at risk', lack of communication between health care providers and older adults concerning sexual activity and/or status, and recurring psychosocial components related to lack of resources and standards of care among older adults living with HIV/AIDS. An unbalanced amount of research has focused on the care and prevention of HIV/AIDS among young adult populations, while a limited amount of research is geared toward detection, prevention and interventions for HIV/AIDS in older adults. Findings suggest that HIV/AIDS is a syndrome of bias based on age and/or gender by health care providers. Solutions to this epidemic must begin with an all inclusive plan that investigates the prevention, identification and intervention across the lifespan. Discussion: As the country ages and the population of older adults increase, nurses will encounter an increasing number of older adults living with HIV/AIDS. In order to competently provide quality care to older adults with a positive HIV/AIDS status, further research is needed to bridge the gap of literature connecting psychosocial aspects of care and accompanying health outcomes.
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Date Issued: 2012
Identifier: CFH0004253, ucf:44932
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004253

Title: MAN VS BEAST: THE HUMAN-ANIMAL BOUNDARY IN J. K. ROWLING'S HARRY POTTER SERIES.
Creator: Auz, Jessica, Pugh, Tison, University of Central Florida
Abstract / Description: In her series of seven novels, Rowling constructs a society and a framework of characterization that allows her to explore the human-animal boundary in a variety of ways. She connects her novels to the ideology of the classical and medieval periods while still acknowledging the ways that the relationship between humans and animals has changed over the years by showcasing the influence of modern popular culture on her characterization of the human-animal boundary. Through her descriptions of...
Show moreIn her series of seven novels, Rowling constructs a society and a framework of characterization that allows her to explore the human-animal boundary in a variety of ways. She connects her novels to the ideology of the classical and medieval periods while still acknowledging the ways that the relationship between humans and animals has changed over the years by showcasing the influence of modern popular culture on her characterization of the human-animal boundary. Through her descriptions of werewolves, Patronuses, Animagi, and Harry Potter's and Lord Voldemort's abilities to speak Parseltongue, Rowling uses classical, medieval, and modern animal symbolism to showcase her characters' personalities. These human-animal frameworks associate particular imagery with each character, and this imagery highlights the core of the character. By using this symbolism to showcase her characters' deepest characteristics, Rowling also delineates her heroes and villains through their relationships with the boundary between humans and animals. This thesis analyzes the ways that Rowling's fusion of classical, medieval, and modern animal symbolism contributes to Rowling's characterization of heroes and villains throughout the series. By examining the instances where characters engage the human-animal boundary, this thesis constructs an argument that highlights the fluidity of the human-animal boundary through examples from the series and analysis of Rowling's characters.
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Date Issued: 2011
Identifier: CFH0003833, ucf:44717
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0003833

Title: CONTENT AND CITATION ANALYSIS OF INTERDISCIPLINARY HUMANITIES TEXTBOOKS WITHIN A FRAMEWORK OF CURRICULUM THEORY.
Creator: Guidera, Julie, Boote, David, University of Central Florida
Abstract / Description: The purpose of this dissertation was to analyze the content of textbooks used in undergraduate survey courses in interdisciplinary humanities to understand the content of the curriculum and how an author's viewpoint shapes the product. By enumerating the texts and images authors and their publishers used to illustrate 20th century culture and the transition into the 21st century, the analysis generated a description of the range of perspectives from traditional to postmodern found in six...
Show moreThe purpose of this dissertation was to analyze the content of textbooks used in undergraduate survey courses in interdisciplinary humanities to understand the content of the curriculum and how an author's viewpoint shapes the product. By enumerating the texts and images authors and their publishers used to illustrate 20th century culture and the transition into the 21st century, the analysis generated a description of the range of perspectives from traditional to postmodern found in six sampled textbooks. Textbook content provided chronological data, while authors' source citations established identity properties of the works' contributors. Through a ranking system of authors' treatment of content and citations, the most traditional perspectives were compared to the most postmodern. Classifying cultural contributors by identity properties gave a quantitative rate of inclusion of traditionally excluded groups. A trend of increase in "diversity-infusion" was observed among all authors when the content of the textbooks was compared in chronological sequence. The qualitative differences, as constructed for this dissertation, indicate that each textbook constitutes a varied and unique representation of author perspective. The project's contribution to future research is the development of a database of art works and literary sources from the years 1900-2006 that can be used for quantification and for further study.
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Date Issued: 2009
Identifier: CFE0002851, ucf:48075
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002851

Title: Simulating Human Pleura Performance in Medical Training Using Measured Tissue Mechanical Properties.
Creator: Norfleet, Jack, Bai, Yuanli, Kassab, Alain, Metcalf, David, Cendan, Juan, University of Central Florida
Abstract / Description: Medical simulations provide hands-on training at various levels of medical expertise. Yet these simulators fail to accurately mimic the look, feel and behavior of human tissue. Applying measured mechanical properties from human cadaver tissues promises to improve the fidelity of simulated tissue behaviors when subjected to medical procedures. Samples of human parietal pleura were tested under uniaxial tension to failure and measured characteristics were replicated in synthetic pleura. Context...
Show moreMedical simulations provide hands-on training at various levels of medical expertise. Yet these simulators fail to accurately mimic the look, feel and behavior of human tissue. Applying measured mechanical properties from human cadaver tissues promises to improve the fidelity of simulated tissue behaviors when subjected to medical procedures. Samples of human parietal pleura were tested under uniaxial tension to failure and measured characteristics were replicated in synthetic pleura. Context specific parameters were then collected and compared between human pleura and the new synthetics. These comparisons tested the hypothesis; H1 Gaps exist between synthetic and human pleura performance, H2: Human tissue fracture mechanics define desired performance of synthetic tissues, H3: Synthetic and human tissues with similar stress/strain parameters will behave similarly when blunt punctured. The results promote the future development of high fidelity tissue simulants for medical training.The studied tissue is parietal pleura which contributes the critical haptic (")pop(") indicating access to the proper anatomic space during the tube thoracostomy procedure. Once accessed through blunt puncture, tube is then inserted to drain air and fluid from around the lungs.Stress/strain based hyper-elastic and fracture properties calibrated from fresh human cadaver pleura were used to define performance requirements. Synthetic pleura were then prototyped and their mechanical properties were characterized. Commercial pleura simulants were puncture tested and compared to compliant custom and off-the-shelf formulations. A non-compliant but commonly used pleura substitute was also tested. Blunt puncture force and displacement were compared for each of the materials to test the stated hypotheses.
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Date Issued: 2018
Identifier: CFE0007065, ucf:52023
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007065

Title: Transformative Learning:Improving Teachers' Cultural Competencies Through Knowledge and Practice of Ubuntu Pedagogy.
Creator: Blackwood, Alecia, Hopp, Carolyn, Biraimah, Karen, Little, Mary, Boote, David, Washington, Kevin, University of Central Florida
Abstract / Description: The pursuit of this ethnographic study was inspired by my lived experiences as an urban school teacher for 18 years, as well as, the experiences of a group of other urban teachers. The study explored the following question: Does knowledge and practice of Ubuntu pedagogy help to improve teachers' cultural competencies in an urban school? The research documents how knowledge and practice of the three pillars of Ubuntu pedagogy help to transform the perspective of urban teachers. The three...
Show moreThe pursuit of this ethnographic study was inspired by my lived experiences as an urban school teacher for 18 years, as well as, the experiences of a group of other urban teachers. The study explored the following question: Does knowledge and practice of Ubuntu pedagogy help to improve teachers' cultural competencies in an urban school? The research documents how knowledge and practice of the three pillars of Ubuntu pedagogy help to transform the perspective of urban teachers. The three pillars are (1) Humanism and Ubuntu Competency, (2) Collaboration and Partnership, and (3) Relationship and Learning Community. Data were collected using multiple techniques, which included semi-structured interviews, book study, reflective digital journal notes, observations and a focus group. Seven participants, who were interviewed, were selected using convenience sampling (Creswell, 2013). Transformative learning and Ubuntu pedagogy are constructs in the conceptual framework that guided the process of the research design. For the data analysis procedures, the description of the interpretation of the cultural-sharing group provided more insights about teachers' experiences in an urban school. Recommendations were made based on the data collected, which provided evidence of how the knowledge and practice of Ubuntu pedagogy helped to improve teachers' cultural competencies. The teachers' focus group, book study reflections and classroom observations revealed that all the teachers experienced levels of a disorienting dilemma, a shift in frame of reference that was more inclusive and self-reflective.
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Date Issued: 2018
Identifier: CFE0007157, ucf:52326
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007157

Title: Nonlinear Control Synthesis for Facilitation of Human-Robot Interaction.
Creator: Ding, Zhangchi, Behal, Aman, Pourmohammadi Fallah, Yaser, Haralambous, Michael, Boloni, Ladislau, Xu, Yunjun, University of Central Florida
Abstract / Description: Human-robot interaction is an area of interest that is becoming increasingly important in robotics research. Nonlinear control design techniques allow researchers to guarantee stability, performance, as well as safety, especially in cases involving physical human-robot interaction (PHRI). In this dissertation, we will propose two different nonlinear controllers and detail the design of an assistive robotic system to facilitate human-robot interaction. In Chapter 2, to facilitate physical...
Show moreHuman-robot interaction is an area of interest that is becoming increasingly important in robotics research. Nonlinear control design techniques allow researchers to guarantee stability, performance, as well as safety, especially in cases involving physical human-robot interaction (PHRI). In this dissertation, we will propose two different nonlinear controllers and detail the design of an assistive robotic system to facilitate human-robot interaction. In Chapter 2, to facilitate physical human-robot interaction, the problem of making a safe compliant contact between a human and an assistive robot is considered. Users with disabilities have a need to utilize their assistive robots for physical interaction during activities such as hair-grooming, scratching, face-sponging, etc. Specifically, we propose a hybrid force/velocity/attitude control for our physical human-robot interaction system which is based on measurements from a force/torque sensor mounted on the robot wrist. While automatically aligning the end-effector surface with the unknown environmental (human) surface, a desired commanded force is applied in the normal direction while following desired velocity commands in the tangential directions. A Lyapunov based stability analysis is provided to prove both convergence as well as passivity of the interaction to ensure both performance and safety. Simulation as well as experimental results verify the performance and robustness of the proposed hybrid force/velocity/attitude controller in the presence of dynamic uncertainties as well as safety compliance of human-robot interactions for a redundant robot manipulator.Chapter 3 presents the design, analysis, and experimental implementation of an adaptive control enabled intelligent algorithm to facilitate 1-click grasping of novel objects by a robotic gripper since one of the most common types of tasks for an assistive robot is pick and place/object retrieval tasks. But there are a variety of objects in our daily life all of which need different optimal force to grasp them. This algorithm facilitates automated grasping force adjustment. The use of object-geometry free modeling coupled with utilization of interaction force and slip velocity measurements allows for the design of an adaptive backstepping controller that is shown to be asymptotically stable via a Lyapunov-based analysis. Experiments with multiple objects using a prototype gripper with embedded sensing show that the proposed scheme is able to effectively immobilize novel objects within the gripper fingers. Furthermore, it is seen that the adaptation allows for close estimation of the minimum grasp force required for safe grasping which results in minimal deformation of the grasped object.In Chapter 4, we present the design and implementation of the motion controllerand adaptive interface for the second generation of the UCF-MANUSintelligent assistive robotic manipulator system. Based on usability testingfor the system, several features were implemented in the interface thatcould reduce the complexity of the human-robot interaction while alsocompensating for the deficits in different human factors, such as WorkingMemory, Response Inhibition, Processing Speed; , Depth Perception, SpatialAbility, Contrast Sensitivity. For the controller part, we designed severalnew features to provide the user has a less complex and safer interactionwith the robot, such as `One-click mode', `Move suggestion mode' and`Gripper Control Assistant'. As for the adaptive interface design, wedesigned and implemented compensators such as `Contrast Enhancement',`Object Proximity Velocity Reduction' and `Orientation Indicator'.
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Date Issued: 2019
Identifier: CFE0007798, ucf:52360
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007798

Title: Development of a Non-Human Primate Model for Staphylococcus aureus Nasal Carriage.
Creator: Lasseter, Amanda, Cole, Amy, Naser, Saleh, Teter, Kenneth, University of Central Florida
Abstract / Description: Staphylococcus aureus nasal carriage (SANC) is largely asymptomatic, but presents a risk of autoinfection and dissemination to new immunocompromised hosts. SA disease states range from mild cutaneous infections to life-threatening bacteremia. Historically utilized rodent models do not naturally carry SA in the nose, are insufficient in longitudinal SANC experimentation, and lack immune factors that are vital in human clearance of SA. The nasal passages of non-human primates are similar...
Show moreStaphylococcus aureus nasal carriage (SANC) is largely asymptomatic, but presents a risk of autoinfection and dissemination to new immunocompromised hosts. SA disease states range from mild cutaneous infections to life-threatening bacteremia. Historically utilized rodent models do not naturally carry SA in the nose, are insufficient in longitudinal SANC experimentation, and lack immune factors that are vital in human clearance of SA. The nasal passages of non-human primates are similar anatomically and histologically, and reproductive mucosal studies have shown similar immune responses to pathogens and human-relevant microbial profiles. Seventeen captive pigtailed macaques (Macaca nemestrina) were found to naturally carry SA in the nose and pharynx, while topical mupirocin ointment effectively decolonized SA, similar to humans. Colonization was established with a human-relevant inoculum of 104 SA CFUs per nostril in four independent experiments, including with a human isolate (ST398). Autologous and non-autologous macaque strains were carried similarly in load and duration, each surviving over 40 days. Animals that cleared SA showed a rapid neutrophilic innate response, with up-regulation of IL-8, MCP-1, and IL-1? following inoculation, as observed in human hosts. Assessment of the nasal microbiome of pigtailed macaques and humans demonstrated similar relative abundance of the most prevalent genera: Staphylococcus, Corynebacterium, and Acinetobacter. Collectively, these multidimensional analyses provide evidence that the pigtailed macaque is a novel physiological model of human SANC that may be useful for testing novel SA decolonization strategies.
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Date Issued: 2018
Identifier: CFE0007216, ucf:52236
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007216

Title: Moral Blameworthiness and Trustworthiness: The Role of Accounts and Apologies in Perceptions of Human and Machine Agents.
Creator: Stowers, Kimberly, Hancock, Peter, Jentsch, Florian, Mouloua, Mustapha, Chen, Jessie, Barber, Daniel, University of Central Florida
Abstract / Description: Would you trust a machine to make life-or-death decisions about your health and safety?Machines today are capable of achieving much more than they could 30 years ago(-)and thesame will be said for machines that exist 30 years from now. The rise of intelligence in machineshas resulted in humans entrusting them with ever-increasing responsibility. With this has arisenthe question of whether machines should be given equal responsibility to humans(-)or if humanswill ever perceive machines as...
Show moreWould you trust a machine to make life-or-death decisions about your health and safety?Machines today are capable of achieving much more than they could 30 years ago(-)and thesame will be said for machines that exist 30 years from now. The rise of intelligence in machineshas resulted in humans entrusting them with ever-increasing responsibility. With this has arisenthe question of whether machines should be given equal responsibility to humans(-)or if humanswill ever perceive machines as being accountable for such responsibility. For example, if anintelligent machine accidentally harms a person, should it be blamed for its mistake? Should it betrusted to continue interacting with humans? Furthermore, how does the assignment of moralblame and trustworthiness toward machines compare to such assignment to humans who harmothers? I answer these questions by exploring differences in moral blame and trustworthinessattributed to human and machine agents who make harmful moral mistakes. Additionally, Iexamine whether the knowledge and type of reason, as well as apology, for the harmful incidentaffects perceptions of the parties involved. In order to fill the gaps in understanding betweentopics in moral psychology, cognitive psychology, and artificial intelligence, valuableinformation from each of these fields have been combined to guide the research study beingpresented herein.
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Date Issued: 2017
Identifier: CFE0007134, ucf:52311
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007134

Title: Remediation and the Task of the Translator in the Digital Age: Digitally Translating Simone Schwarz-Bart's "Pluie et Vent sur Telumee Miracle".
Creator: DiLiberto, Stacey, Murphy, Patrick, Kamrath, Mark, Meehan, Kevin, Leticee, Marie, University of Central Florida
Abstract / Description: In this qualitative study, I examine the utilization of electronic publication and electronic writing systems to provide new possibilities for the translation of French Caribbean literary texts. Using Simone Schwarz-Bart's 1972 novel "Pluie et vent sur T(&)#233;lum(&)#233;e Miracle" specifically for analysis and exploration, I investigate the potential of digital technology to aid in the production of literary translations that are mindful not only of the dynamics of language, but of French...
Show moreIn this qualitative study, I examine the utilization of electronic publication and electronic writing systems to provide new possibilities for the translation of French Caribbean literary texts. Using Simone Schwarz-Bart's 1972 novel "Pluie et vent sur T(&)#233;lum(&)#233;e Miracle" specifically for analysis and exploration, I investigate the potential of digital technology to aid in the production of literary translations that are mindful not only of the dynamics of language, but of French Caribbean women's discourse as well. Since the cultural turn of translation studies, translators need not only be bilingual but bicultural as well, having a discerning knowledge and familiarity of the culture that they render. Cultural translation scholars, therefore, have argued that translators should make the reasons for their translation choices known through annotations, prefaces, introductions, or footnotes. Advancing this established claim through critical and theoretical analysis and the construction of hypermediated textual translation samples from Pluie et Vent, I argue that translators can make their choices known by utilizing digital writing and hypermedia tools, such as TEI-conformant XML, and using them for computer assisted translation (CAT) and electronic publication. By moving a new translation of Schwarz-Bart's text to a digital space, translators have more options in how they present their renderings including what information to include for better textual interpretation and analysis. The role, thus, of the translator has expanded. This person is not just a translator of language and culture, but an editor who provides scholarly information for critical interpretation. She is also a programmer who is skilled in new media writing and editing tools and uses those tools rhetorically to invent new methods for the electronic translation of literature.
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Date Issued: 2011
Identifier: CFE0004101, ucf:49099
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004101

Title: THE SYNERGIES BETWEEN TOURISM EXPANSION AND DEVELOPMENT: AN ANALYSIS OF ECONOMIC GROWTH, POVERTY AND HUMAN DEVELOPMENT IN ECUADOR.
Creator: Rivera, Manuel, Croes, Robertico, Hara, Tadayuki, Pizam, Abraham, Robinson, Edward, Maunez-Cuadra, Jose, University of Central Florida
Abstract / Description: ABSTRACTThis dissertation attempts to answer the question of what has been the effect of tourism expansion and development in Ecuador. We attempt to analyze, both theoretically and empirically, the relationship between tourism and development. There have been an enormous number of studies explaining how tourism can affect the various dimensions of development. However, no research has been undertaken to simultaneously empirically examine the impact that changes in tourism expansion has on...
Show moreABSTRACTThis dissertation attempts to answer the question of what has been the effect of tourism expansion and development in Ecuador. We attempt to analyze, both theoretically and empirically, the relationship between tourism and development. There have been an enormous number of studies explaining how tourism can affect the various dimensions of development. However, no research has been undertaken to simultaneously empirically examine the impact that changes in tourism expansion has on poverty, human development, and economic growth.To this end, we propose a cointergation methodology with an error correction model to estimate the impact of tourism expansion on poverty, human development, and economic growth. This study employs time series data from 1988 to 2008 as well as a Granger causality test to examine the hypothesized relationships. The five most important results are, first, that tourism seems to have distinguishable effects on reducing poverty. In the case of Ecuador, a tourism poverty nexus exists and it helps fight poverty in terms of intensity, inequality, and the proportion of poor. Secondly, economic growth is Ecuador is (")pro-poor("). Increases in economic growth have both short and long term effects on poverty reduction. Thirdly, tourism does not yet promotes human development but the other way around. Therefore a virtuous cycle between tourism and human development does not exist yet. Therefore, opportunities exist to further promote tourism in an attempt to support human development programs. Fourthly, economic growth promotes human development but human development does not yet promotes growth. These results suggest that Ecuador is in HD lopsided situation when it comes to economic growth and human development. Finally, the relationship between tourism and economic growth is bi-directional; the expansion of either sector promotes the growth of the other.
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Date Issued: 2011
Identifier: CFE0004161, ucf:49052
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004161

Title: MULTI-TOUCH FOR GENERAL-PURPOSE COMPUTING: AN EXAMINATION OF TEXT ENTRY.
Creator: Varcholik, Paul, Hughes, Charles, University of Central Florida
Abstract / Description: In recent years, multi-touch has been heralded as a revolution in human-computer interaction. Multi-touch provides features such as gestural interaction, tangible interfaces, pen-based computing, and interface customization features embraced by an increasingly tech-savvy public. However, multi-touch platforms have not been adopted as "everyday" computer interaction devices; that is, multi-touch has not been applied to general-purpose computing. The questions this thesis seeks to address are...
Show moreIn recent years, multi-touch has been heralded as a revolution in human-computer interaction. Multi-touch provides features such as gestural interaction, tangible interfaces, pen-based computing, and interface customization features embraced by an increasingly tech-savvy public. However, multi-touch platforms have not been adopted as "everyday" computer interaction devices; that is, multi-touch has not been applied to general-purpose computing. The questions this thesis seeks to address are: Will the general public adopt these systems as their chief interaction paradigm? Can multi-touch provide such a compelling platform that it displaces the desktop mouse and keyboard? Is multi-touch truly the next revolution in human-computer interaction? As a first step toward answering these questions, we observe that general-purpose computing relies on text input, and ask: "Can multi-touch, without a text entry peripheral, provide a platform for efficient text entry? And, by extension, is such a platform viable for general-purpose computing?" We investigate these questions through four user studies that collected objective and subjective data for text entry and word processing tasks. The first of these studies establishes a benchmark for text entry performance on a multi-touch platform, across a variety of input modes. The second study attempts to improve this performance by examining an alternate input technique. The third and fourth studies include mouse-style interaction for formatting rich-text on a multi-touch platform, in the context of a word processing task. These studies establish a foundation for future efforts in general-purpose computing on a multi-touch platform. Furthermore, this work details deficiencies in tactile feedback with modern multi-touch platforms, and describes an exploration of audible feedback. Finally, the thesis conveys a vision for a general-purpose multi-touch platform, its design and rationale.
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Date Issued: 2011
Identifier: CFE0003711, ucf:48798
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0003711

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