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 …

American military plans for a war with the British Empire, first discussed in 1919, have received varied treatment since their declassification. the most common theme among historians in their appraisals of WAR PLAN RED is that of an oddity. Lack of a detailed study of Anglo-American relations in the immediate post-First World War years makes a right understanding of the difficult relationship between the United States and Britain after the War problematic. As a result of divergent aims and policies, the United States and Great Britain did not find the diplomatic and social unity so many on both sides of the Atlantic aspired to during and immediately after the First World War. Instead, United States’ civil and military organizations came to see the British Empire as a fierce and potentially dangerous rival, worthy of suspicion, and planned accordingly. Less than a year after the end of the War, internal debates and notes discussed and circulated between the most influential members of the United States Government, coalesced around a premise that became the rationale for WAR PLAN RED. Ample evidence reveals that contrary to the common narrative of “Anglo-American” and “Atlanticist” historians of the past century, the First World War did …

N-Acylethanolamines (NAEs) are a class of bioactive lipids, and FAAH is one of the enzymes responsible for degrading NAEs in both plants and animals. in plants, FAAH appears to be closely associated with ABA, a phytohormone which has long been associated with plant stress responses, since the overexpression of FAAH in Arabidopsis results in ABA hypersensitivity. Therefore, it is reasonable to speculate that alterations in FAAH transcript levels will result in altered stress responses in plants. to investigate this hypothesis experiments were carried out in which wild type (WT), FAAH-overexpressing (OE), and T-DNA insertional FAAH knockouts of Arabidopsis (faah) were grown in MS media under stress conditions. the stress conditions tested included chilling stress, heavy metal stress induced by cadmium or copper, nutrient limitations induced by low phosphorus or low nitrogen, salt stress induced with NaCl, and osmotic stress induced with mannitol. the OE plants were consistently hypersensitive to all stress conditions in relation to wild type plants. Inactive FAAH overexpressors did not have the hypersensitivity to the salt and osmotic stress of the active OE plants and were instead tolerant to these stresses. FAAH2 (faah2) knockouts and FAAH 1 and 2 double knockouts (faah 1+2) were based on some …

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, …

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.

Recent orders from the executive branch of the United States’ government have encouraged participation from faith-based organizations in providing human services because they are more effective in aiding impoverished citizens. This study examined the effectiveness of faith-based and non faith-based anti-poverty nonprofit organizations to find if one organization type is more effective in providing social services. the data for this study were collected through a survey-questionnaire which was administered to a convenience sample of 82 participants seeking assistance from four different nonprofit organizations (two faith-based and two non faith-based) in Dallas County and Tarrant County. the results from this study indicated that when controlling for demographic and socio-economic variables, recipients from faith-based organizations were less likely to report that they at least received services desired as compared to those who visited a non faith-based organization. Therefore, non faith-based organizations were better at meeting the needs of respondents than faith-based organizations.

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 …

More Texans are living with HIV infection than ever before. in fact, there has been a 6% increase annually, since 2002. This trend is not a result of increased HIV/AIDS incidence, but rather improving life expectancy of those living with HIV. Due to significant advances in HIV/AIDS testing, prevention, and treatment, individuals with HIV are living longer than ever before. However, throughout the state, the life expectancy of a person infected with HIV/AIDS varies spatially. This study investigates and attempts to explain the spatial distribution of HIV/AIDS survival rates by examining neighborhood socioeconomic characteristics. the results suggest that, contrary to expectation, the lowest survival rates occur, not in extreme poverty areas, but rather in moderate SES areas. Too rich to qualify for free treatments, but not rich enough to afford purchasing such treatments, the middle income living with HIV infection are caught between the cracks. the results provide important input for targeting public health interventions to improve HIV/AIDS survival.

Persistent periods of stress exacerbate the symptoms of chronic illness. Additionally, loneliness is strongly correlated with stress and both state and trait anxiety. Prolonged periods of loneliness are linked with depression in both clinical and student samples. Forgiveness, a cognitive, emotional, and behavioral response to interpersonal or intrapersonal conflict, is important to social harmony. in this study I describe three studies that examine forgiveness, loneliness, stress, and anxiety in two populations, a student population and an HIV+ clinical population. Study 1 examined how the variables of forgiveness and loneliness are associated with perceived stress in a student sample of undergraduate students. Study 2 examined the same variables (forgiveness, loneliness, and perceived stress) in an HIV-positive clinical population. Finally, study 3 extends the model and examines the relationship of forgiveness and loneliness to variables related to stress, state and trait anxiety. for studies 2 and 3, 63 HIV-positive individuals participated in the cross-sectional correlational study. the data was analyzed in each study using hierarchical linear regression analysis. We also tested the models for the three studies to determine if forgiveness moderates the relationship between loneliness and state and trait anxiety. in study 1, using hierarchical linear regression analyses, I found that …

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 …

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

Mental toughness has become a focus for researchers as coaches, athletes, and others extol its influence in performance success. In this study I examined mental toughness among collegiate athletes, focusing on its potential relationship to different demographic variables and to the athletes’ mood. Two hundred seventy-two student-athletes representing 12 different sports from a southwestern NCAA Division I university, participated by completing the Sports Mental Toughness Questionnaire (SMTQ), the Brief Assessment of Mood (BAM), and providing demographic information. Analyses of variance (ANOVA) assessed differences in mental toughness scores by sex, race, scholarship status, and starting status. Significant differences in mental toughness emerged between Black – White, male – female, and full – partial – zero scholarship athletes. Pearson correlations showed mental toughness was significantly related to lower levels of anxiety, sadness, anger, confusion, fatigue, and total mood disturbance, and higher levels of vigor.

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.

This study engages the collaboration of dance and music, focusing primarily on experiences in the production of a large scale collaborative concert entitled Never Odd or Even. Famous historical collaborations offer archetypal collaborative models, the more unconventional of which are applied to the pieces of the concert. Issues and observations regarding cross-influence, project evolution, and application of the collaborative models are engaged to determine effective means of collaboration given different circumstances. The key focus of the study, the temporal relationship between music and dance, is explored in great detail to determine three models for relating time between music and dance. These temporal relationship models are applied to the pieces and evaluated on effectiveness and potential strengths when applied to dance.

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.

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.

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.

The field of robotics and mechatronics is advancing at an ever-increasing rate and we are starting to see robots making the transition from the factories to the workplace and homes as cost is reduced and they become more useful. In recent years quadrotors have become a popular unmanned air vehicle (UAV) platform. These UAVs or micro air vehicles (MAV) are being used for many new and exciting applications such as aerial monitoring of wildlife, disaster sites, riots and protests. They are also being used in the film industry, as they are significantly cheaper means of getting aerial footage. While quadrotors are not extremely expensive a good system can cost in the range of $3000 - $8000 and thus too costly as a research platform for many. There are a number of cheaper open source platforms. The ArduCopter is under constant development, has the largest community and is inexpensive making it an ideal platform to work with. The goal of this thesis was to implement video processing on a ground control station allowing for the ArduCopter to track moving objects. This was achieved by using the OpenCV video-processing library to implement object tracking and the MAVLink communication protocol, available on the …

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) …

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.

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.

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.

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.

This thesis investigates the design and implementation of wireless communication system over the GNU Radio. Wireless applications are on the rise with advent of new devices, therefore there is a need to transfer the hardware complexity to software. This development enables software radio function with minimum hardware dependency. the purpose of this thesis is to design a system that will transmit compressed data via Software Defined Radio (SDR). Some parameters such as modulation scheme, bit rate can be changed to achieve the desired quality of service. in this thesis GNU (GNU’s not unix) radio is used while the hardware structure is Universal Software Radio Peripheral (USRP). in order to accomplish the goal, a compression technique called H264 (MPEG_4) encoding is applied for converting data into compressed format. the encoder was implemented in C++ to get compressed data. After encoding, the transmitter reads the compressed data and starts modulation. After modulation, the transmitter put the packets into USRP and sends it to the receiver. Once packets are received they are demodulated and then decoded to recover the original data.