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Articles 4201 - 4230 of 11266

Full-Text Articles in Social and Behavioral Sciences

Chromatographic And Mass Spectral Analyses Of Oligosaccharides And Indigo Dye Extracted From Cotton Textiles With Manova And Ano, Jessica Frisch Jan 2008

Chromatographic And Mass Spectral Analyses Of Oligosaccharides And Indigo Dye Extracted From Cotton Textiles With Manova And Ano, Jessica Frisch

Electronic Theses and Dissertations

Research was conducted on thirteen 100% cotton denim samples using an acid wash, established by Murray, to extract oligosaccharides from the cellulosic material. The oligosaccharide ion groups (+, +, and +) for molecules with degrees of polymerization between two and seven (DP2-DP7) were analyzed using liquid chromatography coupled to mass spectrometry with an electrospray ionization interface (LC-ESI-MS). The results were compared using the least-squares means in a Multivariate ANOVA (MANOVA) test followed by Univariate ANOVA and Tukey HSD tests and demonstrated that the method could correctly determine that two samples were statistically different 85.9% of the time when analyzing the …

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Development And Forensic Application Of Dye Probe Fluorescence Resonance Energy Transfer For Improved Detection Of Changes In Dn, Micah Halpern Jan 2008

Development And Forensic Application Of Dye Probe Fluorescence Resonance Energy Transfer For Improved Detection Of Changes In Dn, Micah Halpern

Electronic Theses and Dissertations

Discovering, screening, and associating changes in DNA sequence are important to a broad range of disciplines and play a central role in Forensic Science. The typical types of changes include sequence variations [single nucleotide polymorphisms (SNP)] and length variations [short tandem repeats (STR)]. The steps for forensic DNA sample processing are similar for both types of changes but diverge at the point of detection. A number of approaches are being explored for SNP genotyping while STR analysis primarily consists of size-based analysis by capillary electrophoresis. Limitations exist for all current detection methods that pose significant impacts to forensic analysis. Bi-allelic …

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Field Of View Effects On Reflexive Motor Response In Flight Simulation, Javier Covelli Jan 2008

Field Of View Effects On Reflexive Motor Response In Flight Simulation, Javier Covelli

Electronic Theses and Dissertations

Virtual Reality (VR) and Augmented Reality (AR) Head Mounted Display (HMD) or Head Worn Display (HWD) technology represents low-cost, wide Field of Regard (FOR), deployable systems when compared to traditional simulation facilities. However, given current technological limitations, HWD flight simulator implementations provide a limited effective Field of View (eFOV) far narrower than the normal human 200[degrees] horizontal and 135[degrees] vertical FOV. Developing a HWD with such a wide FOV is expensive but can increase the aviator's visual stimulus, perception, sense of presence and overall training effectiveness. This research and experimentation test this proposition by manipulating the eFOV of experienced pilots …

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Perception And Displays For Teleoperated Robots, Linda Upham Ellis Jan 2008

Perception And Displays For Teleoperated Robots, Linda Upham Ellis

Electronic Theses and Dissertations

In remote or teleoperational tasks involving humans and robots, various aspects of the remote display system may greatly influence the individual's interactions with the teleoperated entity. This dissertation examined various configurations of display systems on several measures of operator performance, physiological states, and perceptions of the task. Display configurations included altering the camera placement (attached to the robot or placed overhead), screen orientation (horizontal or vertical), and screen size (small or large). Performance was measured in terms of specific task goals, accuracies, strategies, and completion times. Physiological state was assessed through physiological markers of arousal, specifically heart rate and skin …

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Trait Arousability And Its Impact On Adaptive Multimedia Training, Sae Schatz Jan 2008

Trait Arousability And Its Impact On Adaptive Multimedia Training, Sae Schatz

Electronic Theses and Dissertations

Today's best intelligent, adaptive, multimedia trainers have shown excellent performance; however, their results still fall far-short of what good human tutors can achieve. The overarching thesis of this paper is that future intelligent, adaptive systems will be improved by taking into account relevant, consistent, and meaningful individual differences. Specifically, responding to individual differences among trainees will (a) form more accurate individual baselines within a training system, and (b) better inform system responses (so that they interpret and respond to observable data more appropriately). One variable to consider is trait arousability, which describes individual differences in sensitivity to stimuli. Individuals' arousability …

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Turkey In The Caspian Sea Region, Seyma Akkoyunlu Jan 2008

Turkey In The Caspian Sea Region, Seyma Akkoyunlu

Electronic Theses and Dissertations

This thesis will determine the influence of Turkey's domestic resources on Turkey's foreign relations with the five Turkic states in the Caspian Sea Region. The spheres analyzed in this study are the common ties, which are history, culture, religion and language, with the regional countries, pan-Turkism, Turkey's initial interactions as well as ongoing constructive policies in the region. Findings showed that both Turkey and the five Turkic republics were enthusiastic to carry their relations in every field to future cooperation following the break up of the Soviet Union. However the Turkic Republics' interest in Turkish development model gradually declined starting …

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Oil, Politics Of The Business Environment And The Persian Gulf, Jacob Parks Jan 2008

Oil, Politics Of The Business Environment And The Persian Gulf, Jacob Parks

Electronic Theses and Dissertations

This study investigated the effect the price of oil has on enabling political establishments to maintain their presence within the business environment. The study consists of three different case studies with each of the states (Saudi Arabia, Iran and the United Arab Emirates) being chosen based upon their level of state involvement within the business community. Each case study investigated whether the price of oil had any effect on influencing the amount of political involvement within the business community, property rights or trade freedom. The findings for all three case studies suggest that the price of oil has little to …

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The Effects Of Foreign Aid On Perceptions Of Corruption In Sub-Saharan Africa, Margaret Wilkie Jan 2008

The Effects Of Foreign Aid On Perceptions Of Corruption In Sub-Saharan Africa, Margaret Wilkie

Electronic Theses and Dissertations

This paper is a study of the effects of foreign aid on perceptions of political corruption in Sub-Saharan Africa. In keeping with the consensus on foreign aid effectiveness, this study proposed that Sub-Saharan African countries receiving more foreign aid would be more likely to maintain high levels of perceived corruption. Hypotheses were tested using multivariate regression, controlling for a number of factors which have shown to be influential on perceptions of political corruption. Two models were tested, one to show the regression over a period of nine years, and the other to show the relationship between the foreign aid and …

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Am I Too Fat To Be A Princess? Examining The Effects Of Popular Children's Media On Preschoolers' Body Image, Sharon Hayes Jan 2008

Am I Too Fat To Be A Princess? Examining The Effects Of Popular Children's Media On Preschoolers' Body Image, Sharon Hayes

Electronic Theses and Dissertations

The current study investigated the effects of brief exposure to appearance-related media on female preschoolers' body image. Results indicated that exposure did not affect body dissatisfaction or engagement in appearance-related play behaviors. Surprisingly, participants' self-reported frequency of weight concerns decreased at posttest. In contrast to older populations, it is possible that young children may adopt the persona of attractive characters with whom they identify rather than comparing themselves to the characters. This level of identification temporarily may alleviate weight concerns. This is the first empirical study to provide support for previous findings that suggest media exposure does not affect body …

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Gamma Hydroxybutyrate Use Among College Students: Application Of A Memory Model To Explore The Influence Of Outcome Expectancies, Pamela Brown Jan 2008

Gamma Hydroxybutyrate Use Among College Students: Application Of A Memory Model To Explore The Influence Of Outcome Expectancies, Pamela Brown

Electronic Theses and Dissertations

Gamma Hydroxybutyrate (GHB) was banned from the consumer market by the Food and Drug Administration in 1991. Despite the ban, use of GHB has continued to contribute to thousands of emergency department visits and numerous fatalities in recent years. Efforts to reduce the use of this drug have had limited impact, which may be the result of using traditional prevention strategies that focus exclusively on educating people about of negative consequences of substance use rather than addressing the factors that motivate use. In an effort to identify motivational factors that could be targeted in future prevention efforts, the present study …

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Hysteresis Effects In Driving, Justin Morgan Jan 2008

Hysteresis Effects In Driving, Justin Morgan

Electronic Theses and Dissertations

This dissertation presents two studies examining the interaction between workload history and driver mental workload. The first experiment focuses on testing for the presence of a hysteresis effect in the driving task. The second experiment examines the proposition that cueing impending periods of higher task demand can reduce the impact of any such potential hysteresis effects. Thirty-two licensed drivers served as participants and all served in both studies. Using the directions provided by a Heads-Up-Display navigation system, participants followed a pre-set route in the simulated environment. At specified points within the drive, the navigation system would purposefully fail which required …

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Tactile Working Memory And Multimodal Loading, Peter Terrence Jan 2008

Tactile Working Memory And Multimodal Loading, Peter Terrence

Electronic Theses and Dissertations

This work explored the role of spatial grouping, set size, and stimulus probe modality using a recall task for visual, auditory, and tactile information. The effects of different working memory (WM) loading task modalities were also examined. The Gestalt spatial organizing principle of grouping showed improvements in response times for visual and tactile stimulus probes with large set sizes and apparently allowed participants to effectively chunk the information. This research suggests that tactile information may use spatial characteristics typically associated with visual information, as well as sequential characteristics normally associated with verbal information. Based on these results, a reformulation of …

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Resiliency Factors And Pathways To Incarceration In Female Survivors Of Childhood Sexual Abuse, Kia Asberg Jan 2008

Resiliency Factors And Pathways To Incarceration In Female Survivors Of Childhood Sexual Abuse, Kia Asberg

Electronic Theses and Dissertations

Studies find consistently that survivors of childhood sexual abuse (CSA) are likely to suffer from depression, post-traumatic stress, and problematic substance use, and may experience also a variety of adjustment difficulties in several emotional, behavioral, and interpersonal domains. Involvement with the legal system is one such outcome to consider, especially given the increasing number of women serving time in correctional facilities with nearly two-thirds of these women being survivors of CSA (e.g., Browne, Miller, & Maguin, 1999). The current literature lacks comparisons between female survivors of CSA who have legal involvement and those who do not; hence, the current study …

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Controlling Our Emotion At Work: Implications For Interpersonal And Cognitive Task Performance In A Customer Service Simulation, Moshe Feldman Jan 2008

Controlling Our Emotion At Work: Implications For Interpersonal And Cognitive Task Performance In A Customer Service Simulation, Moshe Feldman

Electronic Theses and Dissertations

Display rules are used by organizations to define appropriate behaviors and expressions while interacting with others in the workplace. Emotional labor is a function of the effort required to adhere to these display rules and has been associated with negative outcomes such as stress and burnout which can lead to higher levels of turnover and health care costs for the organization. In addition, evidence suggests that emotional labor may come at a cognitive cost as well. Hence, reducing the amount of emotional labor should be beneficial to both employees and organizations alike. The current study used a customer service simulation …

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Food For Thought: The Relationship Between Thought Suppression And Weight Control, Rachel Peterson Jan 2008

Food For Thought: The Relationship Between Thought Suppression And Weight Control, Rachel Peterson

Electronic Theses and Dissertations

The current study assessed the relationship between individuals' tendency to suppress thoughts, particularly related to food and body weight/shape, and outcomes such as weight loss maintenance and diet sabotaging experiences (e.g., binge eating). Community and university individuals (N = 347) who are or previously were overweight completed self-report measures of thought suppression, weight history, and eating behaviors. Suppression of specific thoughts about food/weight/shape was related to weight cycling, binge eating, and food cravings. Participants who believed thoughts of food lead to eating were more likely to attempt suppression of food-related thoughts. Results have implications for improving weight loss maintenance and …

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Implementation And Evaluation Of A Classroom-Based Approach To Expectancy Challenge For Reducing Alcohol Use Among First-Year Co, Janani Sivasithamparam Jan 2008

Implementation And Evaluation Of A Classroom-Based Approach To Expectancy Challenge For Reducing Alcohol Use Among First-Year Co, Janani Sivasithamparam

Electronic Theses and Dissertations

There is a pervasive belief in the United States that the college experience typically includes frequent social activities characterized by widespread alcohol use. Unfortunately, awareness of the hundreds of deaths and wide variety of other harms experienced by college students as a result of alcohol use is much less pervasive. In an effort to increase awareness of the negative impact of alcohol use on college campuses, the NIAAA commissioned a panel composed of scientists and college presidents to document alcohol-related harms and identify strategies that have been found to be effective in reducing risky alcohol use based on empirical evidence. …

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Distributed Team Training: Effective Team Feedback, Kevin Oden Jan 2008

Distributed Team Training: Effective Team Feedback, Kevin Oden

Electronic Theses and Dissertations

The United States Army currently uses after action reviews (AARs) to give personnel feedback on their performance. However, due to the growing use of geographically distributed teams, the traditional AAR, with participants and a moderator in the same room, is becoming difficult; therefore, distributed AARs are becoming a necessity. However, distributed AARs have not been thoroughly researched. To determine what type of distributed AARs would best facilitate team training in distributed Army operations, feedback media platforms must be compared. This research compared three types of AARs, which are no AAR, teleconference AAR, and teleconference AAR with visual feedback, to determine …

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Investigating The Effects Of Tactile Stress On A Military Touniquet Application Task, Razia Nayeem Jan 2008

Investigating The Effects Of Tactile Stress On A Military Touniquet Application Task, Razia Nayeem

Electronic Theses and Dissertations

In combat, soldiers encounter stress from multiple sources including loss of sleep, extremely high levels of physical and psychological discomfort, extended periods of increased vigilance, and intense danger. Therefore, it is imperative to train such personnel on how to cope with these stressors. One way to do this is to include stressors in different forms of training to acclimate soldiers to the subsequent stress of combat. Due to their advantages, tactile trainers are being investigated increasingly for the use of training Army medics in this context. The present work examines how vibrating tactile sensors, or tactors, can be used as …

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Game On: The Impact Of Game Features In Computer-Based Training, Renee Derouin-Jessen Jan 2008

Game On: The Impact Of Game Features In Computer-Based Training, Renee Derouin-Jessen

Electronic Theses and Dissertations

The term "serious games" became popularized in 2002 as a result of an initiative to promote the use of games for education, training, and other purposes. Today, many companies are using games for training and development, often with hefty price tags. For example, the development budget for the U.S. Army recruiting game, "America's Army" was estimated at $7 million. Given their increasing use and high costs, it is important to understand whether game-based learning systems perform as billed. Research suggests that games do not always increase learning outcomes over conventional instruction. However, certain game features (e.g., rules/goals, fantasy, challenge) might …

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Feedback-Based Alcohol Interventions For Mandated Students: A Comparison Of Individual, Group, And Electronic Formats, Jacqueline Alfonso Jan 2008

Feedback-Based Alcohol Interventions For Mandated Students: A Comparison Of Individual, Group, And Electronic Formats, Jacqueline Alfonso

Electronic Theses and Dissertations

The present study examined the effectiveness of personalized alcohol feedback interventions in three different delivery formats on alcohol use and related negative consequences in a sample of mandated college students referred for alcohol-related violations. Participants were randomized to one of three conditions: an individually-delivered face-to-face intervention, a group-delivered face-to-face intervention, or a web-based electronically-delivered intervention. Given that the current study sought to modify factors associated with alcohol use, analyses were conducted using only those participants who reported alcohol use at the baseline assessment. The final sample resulted in 173 participants, 18-years-of-age and over, and consisted of 57% males (n = …

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Experiences, Attitudes And Beliefs About Interpersonal Violence: A Study On Costa Rican Adolescents, Monica Mendez Jan 2008

Experiences, Attitudes And Beliefs About Interpersonal Violence: A Study On Costa Rican Adolescents, Monica Mendez

Electronic Theses and Dissertations

Research in Latin America regarding interpersonal violence and adolescents is rare if not nonexistent. In a collaborative effort with the Costa Rican Ministry of Education and the National Institute of Women (INAMU), qualitative data were collected from three high schools and one after-school program from rural and urban locations of the Central Valley. The discussion groups/open-ended questionnaires were done with a total of 154 students ranging from ages 14 to 17 and grade levels 8th to 12th. Information was obtained concerning students' perceptions, definitions and opinions on issues relating to interpersonal violence and gender roles and rules. The results show …

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Initial Validation Of Novel Performance-Based Measures: Mental Rotation And Psychomotor Ability, Philip Fatolitis Jan 2008

Initial Validation Of Novel Performance-Based Measures: Mental Rotation And Psychomotor Ability, Philip Fatolitis

Electronic Theses and Dissertations

Given the high-risk nature of military flight operations and the significant resources required to train U.S. Naval Aviation personnel, continual improvement is required in the selection process. In addition to general commissioning requirements and aeromedical standards, the U.S. Navy utilizes the Aviation Selection Test Battery (ASTB) to select commissioned aviation students. Although the ASTB has been a good predictor of aviation student performance in training, it was proposed that incremental improvement could be gained with the introduction of novel, computer administered performancebased measures: Block Rotation (BRT) and a Navy-developed Compensatory Tracking task. This work constituted an initial validation of the …

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The Identification Of Ignitable Liquids In The Presence Of Pyrolysis Products: Generation Of A Pyrolysis Product Database, Joseph Castelbuono Jan 2008

The Identification Of Ignitable Liquids In The Presence Of Pyrolysis Products: Generation Of A Pyrolysis Product Database, Joseph Castelbuono

Electronic Theses and Dissertations

The fire debris analyst is often faced with the complex problem of identifying ignitable liquid residues in the presence of products produced from pyrolysis and incomplete combustion of common building and furnishing materials. The purpose of this research is to investigate a modified destructive distillation methodology provided by the Florida Bureau of Forensic Fire and Explosive Analysis to produce interfering product chromatographic patterns similar to those observed in fire debris case work. The volatile products generated during heating of substrate materials are extracted from the fire debris by passive headspace adsorption and subsequently analyzed by GC-MS. Low density polyethylene (LDPE) …

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Haitian American Mothers' Health And Dietary Beliefs Concerning Their Infants, Daniel Schooler Jan 2008

Haitian American Mothers' Health And Dietary Beliefs Concerning Their Infants, Daniel Schooler

Electronic Theses and Dissertations

Studies on the effects of immigration are becoming more important as the number of immigrants into the United States continues to grow. This study was implemented in order to discover the infant feeding practices and beliefs of Haitians living in Central Florida. A food frequency card sort and interview were conducted with thirty-four Haitian mothers. Mothers were asked to identify which foods they fed their children. Foods pictured on the cards included a majority of Haitian staple foods, some of which are primary to the American diet as well. Low food feeding frequencies were generally attributed to lack of access …

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Examining The Effect Of Organizational Policy Changeon Taser Utilizations, Michael Miller Jan 2008

Examining The Effect Of Organizational Policy Changeon Taser Utilizations, Michael Miller

Electronic Theses and Dissertations

The purpose of this study is to examine the effect of organizational policy changes within the Use-of-Force Continuum on taser usage and officer's perceptions of taser effectiveness. Tasers have been used by police since the 1970s and their use is increasing as the technology has improved. Data reveals that tasers are beneficial for controlling non-compliant suspects while preventing serious injuries and rarely has their use resulted in death. Much of the public controversy surrounding tasers centers on when and how often officers deploy them. Use of force data from 890 police citizen encounters during a two-year period was analyzed to …

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Marijuana Legalization: Americans' Attitudes Over Four Decades, Anthony Saieva Jan 2008

Marijuana Legalization: Americans' Attitudes Over Four Decades, Anthony Saieva

Electronic Theses and Dissertations

Americans have long held a variety of opinions when it comes to the legalization of marijuana. While previous research has mostly focused on use rates and behavior, the purpose of this examination is to specifically analyze people's attitudes towards marijuana legalization. Of particular importance was (1) the extent to which attitudes towards marijuana legalization have changed over the past four decades and (2) how the social factors often associated with marijuana legalization attitudes have changed over the same period. Results indicate that over one-third of Americans now believe marijuana should be made legal. These pro-legalization attitudes are at their highest …

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What Makes Them Click? Applying The Rational Choice Perspective To The Hacking Underground, Michael Bachmann Jan 2008

What Makes Them Click? Applying The Rational Choice Perspective To The Hacking Underground, Michael Bachmann

Electronic Theses and Dissertations

The increasing dependence of modern societies, industries, and individuals on information technology and computer networks renders them ever more vulnerable to attacks on critical IT infrastructures. While the societal threat posed by hackers and other types of cyber-criminals has been growing significantly in the last decade, main-stream criminology has only recently begun to realize the significance of this threat. Cyber-criminology is slowly emerging as a subfield of criminological study and has yet to overcome many of the problems other areas of criminological research have already mastered. Aside from substantial methodological and theoretical problems, cyber-criminology currently also suffers from the scarcity …

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Bobby Petrino Gets Going, Richard C. Crepeau Dec 2007

Bobby Petrino Gets Going, Richard C. Crepeau

On Sport and Society

He has been found. Call off the search. We now have the new poster boy for College Football.

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Central Florida Future, Vol. 39 No. 148, December 10, 2007 Dec 2007

Central Florida Future, Vol. 39 No. 148, December 10, 2007

Central Florida Future

Thanks for the memories; DUI charges follow hit-run; Counseling program addresses suicide; Board allots tuition money.

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Central Florida Future, Vol. 39 No. 147, December 7, 2007 Dec 2007

Central Florida Future, Vol. 39 No. 147, December 7, 2007

Central Florida Future

UCF protesters take food fight to Miami; UCF PD arrest former Buc WR; UCF loses children's hospital at Lake Nona; Minority students see more Ph.D.s.

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