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Reducing Undesirable Behavior with Stimulus Control

Reducing Undesirable Behavior with Stimulus Control

Date: May 2012
Creator: Davison, Matthew Alan
Description: The present experiment investigated the application of Green and Swets (1966) signal-detection theory to undesirable behavior as a method of reducing unwanted behaviors using reinforcement and extinction. This experiment investigated the use of this stimulus control technique to reduce undesirable behaviors using a multiple-baseline design. Once the cue for a target behavior was established and maintained, the use of the verbal cue was reduced in frequency and the rate of unprompted undesirable behavior was recorded. Generalization was tested across multiple people. Data for this experiment showed that undesirable behavior could be reduced by altering the stimulus control that maintained it.
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The Relationship Between Cardiorespiratory Fitness and Bmi, Depressive Symptoms, and School Absences Among a Racial/ethnically Diverse Sample of Early Adolescents

The Relationship Between Cardiorespiratory Fitness and Bmi, Depressive Symptoms, and School Absences Among a Racial/ethnically Diverse Sample of Early Adolescents

Date: May 2012
Creator: Garza, Mariana
Description: The current study examined the relationship between cardiorespiratory fitness on differences by sex, race/ethnicity, and SES on BMI, depressive symptoms, and school absences among adolescents. a cross-sectional study was conducted in a north Texas school district, which included 609 Caucasian/Whites, 293 Hispanic/Latinos, and 113 African-American/Black adolescents (10-14 years). Main results of the study showed that that cardiorespiratory fitness was the largest predictor of BMI, followed by race/ethnicity, and then sex. Cardiorespiratory fitness among adolescents was inversely associated with BMI. the relationship between cardiorespiratory fitness on BMI appeared to be more salient for non-Hispanic white females and non-Hispanic black females in that the former group had lower BMI scores than the latter group when cardiorespiratory fitness was taken into account; however, results showed that non-Hispanic white females and non-Hispanic black females had similar cardiorespiratory fitness level. Other results showed that SES and sex predicted depressive symptoms in that low SES females endorsed more depressive symptoms relative to high SES males; however, this relationship was non-existent when cardiorespiratory fitness was entered into the model. Additionally, findings indicated that BMI and depressive symptoms equally predicted school absences in that adolescents who had a higher BMI and endorsed more depressive symptoms had more school ...
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Rapid Prototyping and Design of a Fast Random Number Generator

Rapid Prototyping and Design of a Fast Random Number Generator

Date: May 2012
Creator: Franco, Juan
Description: Information in the form of online multimedia, bank accounts, or password usage for diverse applications needs some form of security. the core feature of many security systems is the generation of true random or pseudorandom numbers. Hence reliable generators of such numbers are indispensable. the fundamental hurdle is that digital computers cannot generate truly random numbers because the states and transitions of digital systems are well understood and predictable. Nothing in a digital computer happens truly randomly. Digital computers are sequential machines that perform a current state and move to the next state in a deterministic fashion. to generate any secure hash or encrypted word a random number is needed. But since computers are not random, random sequences are commonly used. Random sequences are algorithms that generate a pattern of values that appear to be random but after some time start repeating. This thesis implements a digital random number generator using MATLAB, FGPA prototyping, and custom silicon design. This random number generator is able to use a truly random CMOS source to generate the random number. Statistical benchmarks are used to test the results and to show that the design works. Thus the proposed random number generator will be useful ...
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The Argei: Sex, War, and Crucifixion in Rome and the Ancient Near East

The Argei: Sex, War, and Crucifixion in Rome and the Ancient Near East

Date: May 2012
Creator: Ewin, Kristan Foust
Description: The purpose of the Roman Argei ceremony, during which the Vestal Virgins harvested made and paraded rush puppets only to throw them into the Tiber, is widely debated. Modern historians supply three main reasons for the purpose of the Argei: an agrarian act, a scapegoat, and finally as an offering averting deceased spirits or Lares. I suggest that the ceremony also related to war and the spectacle of displaying war casualties. I compare the ancient Near East and Rome and connect the element of war and husbandry and claim that the Argei paralleled the sacred marriage. in addition to an agricultural and purification rite, these rituals may have served as sympathetic magic for pre- and inter-war periods. As of yet, no author has proposed the Argei as a ceremony related to war. By looking at the Argei holistically I open the door for a new direction of inquiry on the Argei ceremony, fertility cults in the Near East and in Rome, and on the execution of war criminals.The Argei and new year’s sacred marriage both occurred during the initiation of campaign and spring planting and harvest season. Both in the ancient Near East and in Rome, animal victims were sacrificed ...
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Reviewing Commercial Music Resources: a Guide for Aspiring Singers and Vocal Professionals

Reviewing Commercial Music Resources: a Guide for Aspiring Singers and Vocal Professionals

Date: May 2012
Creator: Hanlon, Susan Christina
Description: Contemporary commercial music is a broad label used to describe the styles of popular music including pop, rock, rhythm and blues, jazz, hip-hop, country and heavy metal. the vocal ability required for each of these genres varies greatly but may require the use of screaming, belting, utilizing vocal fry and growling or singing with a breathy or dark tone. Singers who wish to perform in these genres may need assistance with vocal technique to assure the longevity and the quality of their singing. Due to the rise in popularity and the accessibility of contemporary commercial music (CCM), commercial pedagogical guides and self-study manuals are abundantly available for purchase. Aspiring singers are searching for appropriate training for this genre without having an awareness of how the voice works and how to maintain good vocal hygiene. Those who seek out private instruction are often frustrated when traditional classical training techniques are offered, rather than techniques utilizing CCM styles. Because CCM pedagogy is relatively new and few pedagogues in this specialized field are well known, the self-taught singer is responsible for finding a reliable study source. Many vocal instructors and choral directors are interested in familiarizing themselves with new stylistic techniques to enhance ...
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Young Journalists Today: Journalism Students’ Perceptions of the Ever-evolving Industry

Young Journalists Today: Journalism Students’ Perceptions of the Ever-evolving Industry

Date: May 2012
Creator: Daniels, Stephanie
Description: Today’s journalism students are learning in a time in which new technology innovations, including online news sites, blogs, and social media, have become a prominent part of the journalism industry. Whether it’s newspapers, public relations, or broadcast, technology has become a part of every area of journalism. While several studies have focused on how journalism classes should be taught in lieu of this change, how students are learning and how they feel about this changing industry has yet to be shared. This research uses both a survey of 203 current, undergraduate pre-journalism students at a large, Southwestern university, as well as focus group interviews with several subgroups of 11 of those students. The results show, not surprisingly, that journalism students are heavy users of technology and social media. They also show that a majority of journalism students prefers consuming media online. However, although students use technology and social media frequently, and also consume media online, there is evidence that suggests that they would rather learn face-to-face with an instructor than take online classes. In addition, they feel positive about their future in the changing industry.
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The Relationships Among Whistle-blowing, Retaliation, and Identity: a Narrative Analysis

The Relationships Among Whistle-blowing, Retaliation, and Identity: a Narrative Analysis

Date: May 2012
Creator: Gravley, Dianne Yvonne
Description: Existing whistle-blower research has found that retaliation affects the whistle-blowing process. However, there is little literature focusing on the personal and emotional effects that retaliation can have on the whistle-blower’s life. Furthermore, while whistle-blowing has been studied in various organizational contexts, both public and private, virtually no research exists on whistle-blowing in the context of the public school system. This study examines the effects of the whistle-blowing process, specifically the effects of retaliation, on the life of the whistle-blower through a narrative identity construct in the context of the Texas Public School System. This study utilizes narrative analysis to understand the relationship between retaliation and the whistle-blowers’ narrative identity. the analysis reveals that whistle-blowers’ decisions to disclose instances of wrong-doing are motivated by their desired narrative identities. Furthermore, this study shows that retaliation has the greatest effect when it directly attacks the whistle-blowers’ identities.
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A Comparison of Vocabulary Banks and Scripts on Native English-speaking Students’ Acquisition of Italian

A Comparison of Vocabulary Banks and Scripts on Native English-speaking Students’ Acquisition of Italian

Date: May 2012
Creator: Dean, Brittany L.
Description: The study applied behavior analytic principles to foreign language instruction in a college classroom. Two study methods, vocabulary banks and scripts, were compared by assessing the effects on Italian language acquisition, retention, and generalization. Results indicate that students without prior exposure to Italian engaged in more exchanges and emitted more words in script tests compared to vocabulary bank tests. Participants with at least two classes in Italian prior to the study engaged in more exchanges and emitted more words during vocabulary bank tests. Data suggest that different teaching strategies may work for different learners. More research is needed to determine efficient teaching methods and how to ascertain which approaches work best for learners with different histories.
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Comparing the 2010 and 2011 Appic Match: Applicant Characteristics and Unmatched Applicant Distress

Comparing the 2010 and 2011 Appic Match: Applicant Characteristics and Unmatched Applicant Distress

Date: May 2012
Creator: Hogan, Lindsey R.
Description: The internship is one of the most important components of doctoral training in professional psychology. Given the serious problem of the internship imbalance, applicant and program characteristics that constitute a good “fit” with internship training programs have become of greater interest as securing an internship becomes a more competitive process. This study surveyed internship applicants from programs part of the Council of University Directors of Clinical Psychology (CUDCP), before and after the 2010 and 2011 match days. Number of interview offers was found to be the factor most consistently associated with successfully matching, and several other applicant characteristics salient to matching and obtaining interview offers were identified, including applicant personality. Additionally, personal accounts, but not empirical evidence, of going unmatched have attested to the psychological distress associated with this event. in the current study, while going unmatched was not found to be equitable to a traumatic stressor, evidence was found to support significant decrease in subjective well-being with respect to immediate distress. Findings are discussed in terms of the predictability of and implications for the match process and internship imbalance, and recommendations are made for future research directions.
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A Driver, Vehicle and Road Safety System Using Smartphones

A Driver, Vehicle and Road Safety System Using Smartphones

Access: Use of this item is restricted to the UNT Community.
Date: May 2012
Creator: Gozick, Brandon
Description: As vehicle manufacturers continue to increase their emphasis on safety with advanced driver assistance systems (ADAS), I propose a ubiquitous device that is able to analyze and advise on safety conditions. Mobile smartphones are increasing in popularity among younger generations with an estimated 64% of 25-34 year olds already using one in their daily lives. with over 10 million car accidents reported in the United States each year, car manufacturers have shifted their focus of a passive approach (airbags) to more active by adding features associated with ADAS (lane departure warnings). However, vehicles manufactured with these sensors are not economically priced while older vehicles might only have passive safety features. Given its accessibility and portability, I target a mobile smartphone as a device to compliment ADAS that can bring a driver assist to any vehicle without regards for any on-vehicle communication system requirements. I use the 3-axis accelerometer of multiple Android based smartphone to record and analyze various safety factors which can influence a driver while operating a vehicle. These influences with respect to the driver, vehicle and road are lane change maneuvers, vehicular comfort and road conditions. Each factor could potentially be hazardous to the health of the driver, ...
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Continuity of Caste: Free People of Color in the Vieux Carré of New Orleans, 1804-1820

Continuity of Caste: Free People of Color in the Vieux Carré of New Orleans, 1804-1820

Date: May 2012
Creator: Foreman, Nicholas
Description: Because of its trademark racial diversity, historians have often presented New Orleans as a place transformed by incorporation into the American South following 1804. Assertions that a comparatively relaxed, racially ambiguous Spanish slaveholding regime was converted into a two-caste system of dedicated racial segregation by the advent of American assumption have been posited by scholars like Frank Tannenbaum, Gwendolyn Midlo Hall, and a host of others. Citing dependence on patronage, concubinage, and the decline in slave manumissions during the antebellum period, such studies have employed descriptions of the city’s prominent free people of color to suggest that the daily lives of non-whites in New Orleans experienced uniform restriction following 1804, and that the Crescent City’s transformation from Atlantic society with slaves to rigid slave society forced free people of color out of the heart of the city, known as the Vieux Carré, and into “black neighborhoods” on the margins of town. Despite the popularity of such generalized themes in the historiography, however, the extant sources housed in New Orleans’s valuable archival repositories can be used to support a vastly divergent narrative. By focusing on individual free people of color, or libres, rather than the non-white community as a whole, this ...
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Graciously We Receive

Graciously We Receive

Date: May 2012
Creator: Dent, J. Fredrick
Description: Graciously We Receive is an ethnographic documentary film about Hearts for Homes, a volunteer Christian outreach organization that does no-cost home repairs for low income elderly homeowners. Graciously We Receive examines the symbiotic relationships between volunteers and the homeowners, addressing the need to be needed by meeting the needs of others. Using qualitative research methods derived from the social sciences, Graciously We Receive represents an advancement in media-based research methods. with the introduction of quick cine-ethnography, which combines quick ethnography methods and grounded theory for data acquisition and analysis, Graciously We Receive applies anthropological research methods to documentary film production.
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Childhood Bereavement and Parents’ Relationship With Children

Childhood Bereavement and Parents’ Relationship With Children

Date: May 2012
Creator: Benson, Karen M.
Description: It has long been recognized that childhood bereavement is a risk factor for depression in adulthood. Research also has consistently demonstrated that parental depression is linked to poor parent-child relationship quality. The current study examined whether bereavement in childhood increases likelihood of current depressive symptoms among parents and explored whether this vulnerability in the parent then alters the quality of the parent-child relationship. Archival data for a sample of 86 families (N=176 parents) are drawn from the Family & Kid Connection project led by Dr. Shelley Riggs. Instruments utilized include the Background Information Questionnaire, the Symptom Assessment-45 Questionnaire, and the Parenting Relationship Questionnaire. Using the Actor-Partner Interdependence Model, Multilevel Modeling procedures explored the hypothesis that parental depression mediates the association between parents’ childhood bereavement and their perception of the parent-child relationship. Results show a significant relationship between parental (actor) depressive symptoms and parent-child attachment, indicating the need for therapeutic interventions targeting the parent-child relationship, and not just parents, for parents suffering from depression.
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Effect of Resistance Training on Cytokines in Hiv+ Men with Chemical Dependence

Effect of Resistance Training on Cytokines in Hiv+ Men with Chemical Dependence

Date: May 2012
Creator: Curtis, John Harper
Description: Human immunodeficiency virus (HIV) and substance abuse (drug and/or alcohol) independently impair the immune system; importantly, the combination of HIV infection and substance abuse might produce more than an additive effect on this system. Tumor necrosis factor-alpha (TNF-?) and Interferon gamma (IFN?) are pro-inflammatory cytokines involved in differentiation of Th0 cells into Th1 cells. Interleukin 4 (IL-4) and Interleukin 10 (IL-10) are anti-inflammatory cytokine involved in differentiation of Th0 cells to Th2 cells. Unbalanced Th1 and Th2 cells can lead to immune suppression. Thus, changes in these cytokines could have important implications for people infected with HIV (HIV+). Resistance training can counteract muscle wasting, improve strength, and improve muscle mass. The purpose of this study was to examine the effect of resistance training on resting concentrations of circulating TNF-?, IFN-?, IL-4, and IL-10. Sixteen men (42 ± 11 years, 180.4 ± 9.1 cm, 89.2 ± 20.7 kg) infected with HIV and enrolled in an intensive 60-day in-patient substance addiction/abuse treatment program were recruited shortly after admission to the treatment facility. Participants were assigned to one of two groups using randomization: supervised resistance exercise 3 times per week using a progressive and non-linear periodized program (Exercise) or no exercise training (Non-Exercise) ...
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Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas

Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas

Date: May 2012
Creator: Diaz Poueriet, Pablo
Description: Texas is the second largest state in U.S.A. based on geographical area, population and the economy. It is home to several large coastal urban areas with major industries and infrastructure supporting the fossil-fuel based energy sector. Most of the major cities on the state have been impacted by significant air pollution events over the past decade. Studies conducted in the southern coastal region of TX have identified long range transport as a major contributor of particulate matter (PM) pollution along with local emissions. Biomass burns, secondary sulfates and diesel emissions sources are comprise as the dominant mass of PM2.5 have been noted to be formed by the long range transport biomass from Central America. Thus, the primary objective of this study was to identify and quantify local as well as regional sources contributing to the PM pollution in the coastal area of Brownsville located along the Gulf of Mexico. Source apportionment techniques such as principal component analysis (PCA) and positive matrix factorization (PMF) were employed on the air quality monitoring data to identify and quantify local and regional sources affecting this coastal region. As a supplement to the PMF and PCA, conditional probability function (CPF) analysis and potential source contribution ...
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Ecological Significance and Underlying Mechanisms of Body Size Differentiation in White-tailed Deer

Ecological Significance and Underlying Mechanisms of Body Size Differentiation in White-tailed Deer

Date: May 2012
Creator: Barr, Brannon
Description: Body size varies according to nutritional availability, which is of ecological and evolutionary relevance. The purpose of this study is to test the hypothesis that differences in adult body size are realized by increasing juvenile growth rate for white-tailed deer (Odocoileus virginianus). Harvest records are used to construct growth rate estimates by empirical nonlinear curve fitting. Results are compared to those of previous models that include additional parameters. The rate of growth increases during the study period. Models that estimate multiple parameters may not work with harvest data in which estimates of these parameters are prone to error, which renders estimates from complex models too variable to detect inter-annual changes in growth rate that this simpler model captures
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Incorporating Electrochemistry and X-ray Diffraction Experiments Into an Undergraduate Instrumental Analysis Course

Incorporating Electrochemistry and X-ray Diffraction Experiments Into an Undergraduate Instrumental Analysis Course

Access: Use of this item is restricted to the UNT Community.
Date: May 2012
Creator: Molina, Cathy
Description: Experiments were designed for an undergraduate instrumental analysis laboratory course, two in X-ray diffraction and two in electrochemistry. Those techniques were chosen due their underrepresentation in the Journal of Chemical Education. Paint samples (experiment 1) and pennies (experiment 2) were characterized using x-ray diffraction to teach students how to identify different metals and compounds in a sample. in the third experiment, copper from a penny was used to perform stripping analyses at different deposition times. As the deposition time increases, the current of the stripping peak also increases. the area under the stripping peak gives the number of coulombs passed, which allows students to calculate the mass of copper deposited on the electrode surface. the fourth experiment was on the effects of variable scan rates on a chemical system. This type of experiment gives valuable mechanistic information about the chemical system being studied.
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Teaching Past the Test: a Pedagogy of Critical Pragmatism

Teaching Past the Test: a Pedagogy of Critical Pragmatism

Date: May 2012
Creator: Jordan, Jason
Description: Existent scholarship in communication studies has failed to adequately address the particular pedagogical context of current public secondary education within the United States. While communication studies has produced a great deal of scholarship centered within the framework of critical pedagogy, these efforts fail to offer public high school teachers in the U.S. a tenable alternative to standardized constructs of educational communication. This thesis addresses the need for a workable, critical pedagogy in this particular educational context as a specific question of educational communication. a theorization of pedagogical action drawing from critical pedagogy, pragmatism, and communication studies termed “critical pragmatism” is offered as an effective, critical counter point to current neoliberal classroom practices in U.S. public secondary schools.
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An Analysis of the Correspondence Between the Measures Collected by an Autism Treatment Center and its Stated Mission Goals

An Analysis of the Correspondence Between the Measures Collected by an Autism Treatment Center and its Stated Mission Goals

Date: May 2012
Creator: Kowalchuk, Holly M.
Description: This study was a program evaluation for an autism treatment center for the period of April 2008 through August 2011. the study extended previous evaluations of the autism treatment center. the purpose of this evaluation was to determine the degree to which the center’s measures corresponded with its stated mission goals. a number of data sources were reviewed including client records of demographic and outcome information. Findings suggest the center maintained records that allow for the evaluation of most of its mission’s goals. There were, however, difficulties with data collection, storage, and retrieval. the present program evaluation found that missing information and lack of follow-up information hindered efforts toward mission evaluation.
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Newspaper Ownership Structure and the Quality of Local Political News Coverage

Newspaper Ownership Structure and the Quality of Local Political News Coverage

Date: May 2012
Creator: Clark, Karla Christine Marie
Description: This research sought to ascertain how newspaper ownership structures influence the quality of local political news coverage. More specifically, do independently owned newspapers tend to produce larger quantities of quality local political reporting than do corporately owned and publicly traded newspapers? In the thesis, I develop an understanding of "quality" news coverage as being coverage that is thematic, or providing interpretive analysis and supplying contextual information. Additionally, I tackle the question of quality news coverage from three angles: whether or not independently owned newspapers provide more quality local political news stories per edition than corporately owned papers; whether or not the percentage of quality local political news stories of total political news stories within an edition is higher for independently owned or corporately owned newspapers; and whether or not the percentage of total political news stories of total news stories is higher for independently owned or corporately owned newspapers.
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Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna

Effects of Layer Double Hydroxide Nanoclays on the Toxicity of Copper to Daphnia Magna

Date: May 2012
Creator: Blake, Deanne Renee
Description: Nanoparticles may affect secondary pollutants such as copper. Layer Double Hydroxides (LDH) are synthetically produced nanoparticles that adsorb copper via cation exchange. Pretreatment of copper test solutions with LDH nanoparticles followed by filtration removal of LDH nanoparticles demonstrated the smallest LDH aggregates removed the most copper toxicity. This was due to increased surface area for cation exchange relative to larger particle aggregates. Co-exposure tests of copper chloride and clay were run to determine if smaller clay particles increased copper uptake by D. magna. Coexposure treatments had lower LC50 values compared to the filtration tests, likely as a result of additive toxicity. LDH nanoclays do reduce copper toxicity in Daphnia magna and may serve as a remediation tool.
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Rapid Prototyping and Design of a Fast Random Number Generator

Rapid Prototyping and Design of a Fast Random Number Generator

Date: December 2011
Creator: Franco, Juan
Description: Information in the form of online multimedia, bank accounts, or password usage for diverse applications needs some form of security. the core feature of many security systems is the generation of true random or pseudorandom numbers. Hence reliable generators of such numbers are indispensable. the fundamental hurdle is that digital computers cannot generate truly random numbers because the states and transitions of digital systems are well understood and predictable. Nothing in a digital computer happens truly randomly. Digital computers are sequential machines that perform a current state and move to the next state in a deterministic fashion. to generate any secure hash or encrypted word a random number is needed. But since computers are not random, random sequences are commonly used. Random sequences are algorithms that generate a pattern of values that appear to be random but after some time start repeating. This thesis implements a digital random number generator using MATLAB, FGPA prototyping, and custom silicon design. This random number generator is able to use a truly random CMOS source to generate the random number. Statistical benchmarks are used to test the results and to show that the design works. Thus the proposed random number generator will be useful ...
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Tactile Media: Factors Affecting the Adoption of Touchscreen Smartphones Among Consumers with Vision Loss

Tactile Media: Factors Affecting the Adoption of Touchscreen Smartphones Among Consumers with Vision Loss

Date: May 2012
Creator: Bradley, Sapora L.
Description: Touchscreen technology is on the rise as the new standard in smartphone design. But, the usability of touchscreen is hindered for consumers that lack the physical ability to navigate such devices. Two focus groups were conducted in order to identify specific uses and gratifications that people with visual impairments had when using mobile phones. Additional questions were presented to the participants to determine if touchscreen technology limited access to communication and entertainment. The responses revealed an upward trend in touchscreen smartphone adoption among the participants. These users chose to adopt touchscreen smartphones that had built-in and downloadable assistive features which contributed to user-friendly designs.
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After the Planes

After the Planes

Date: May 2012
Creator: Boswell, Timothy
Description: The dissertation consists of a critical preface and a novel. The preface analyzes what it terms “polyvocal” novels, or novels employing multiple points of view, as well as “layered storytelling,” or layers of textuality within novels, such as stories within stories. Specifically, the first part of the preface discusses polyvocality in twenty-first century American novels, while the second part explores layered storytelling in novels responding to World War II or the terrorist attacks of 9/11. The preface analyzes the advantages and difficulties connected to these techniques, as well as their aptitude for reflecting the fractured, disconnected, and subjective nature of the narratives we construct to interpret traumatic experiences. It also acknowledges the necessity—despite its inherent limitations—of using language to engage with this fragmentation and cope with its challenges. The preface uses numerous novels as examples and case studies, and it also explores these concepts and techniques in relation to the process of writing the novel After the Planes. After the Planes depicts multiple generations of a family who utilize storytelling as a means to work through grief, hurt, misunderstanding, and loss—whether from interpersonal conflicts or from war. Against her father’s wishes, a young woman moves in with her nearly-unknown grandfather, ...
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