Racial slavery was a critical element in the cultural development of the Choctaws and was a derivative of the peculiar institution in southern states. The idea of genial and hospitable slave owners can no more be conclusively demonstrated for the Choctaws than for the antebellum South. The participation of Choctaws in the Civil War and formal alliance with the Confederacy was dominantly influenced by the slaveholding and a connection with southern identity, but was also influenced by financial concerns and an inability to remain neutral than a protection of the peculiar institution. Had the Civil War not taken place, the rate of Choctaw slave ownership possibly would have reached the level of southern states and the Choctaws would be considered part of the South.

Several studies were done to illustrate the versatillity of the Abraham model in mathematically describing the various solute-solvent interactions found in a wide range of different chemical and biological systems. The first study focused on using the solvation model to construct mathematical correlations describing the minimum inhibitory concentration of organic compounds for growth inhibition towards the three bacterial strains Porphyromonas gingivalis, Selenomonas artemidis, and Streptococcus sobrinus. The next several studies expand the practicallity of the Abraham model by predicting free energies of partition in chemical systems. The free energy studies expand the use of the Abraham model to other temperatures and properties by developing correlations for the enthalpies of solvation of gaseous solutes of various compounds dissolved in water, 1-octanol, hexane, heptane, hexadecane, cyclohexane, benzene, toluene, carbon tetrachloride, chloroform, methanol, ethanol, 1-butanol, propylene carbonate, dimethyl sulfoxide, 1,2-dichloroethane, N,N-dimethylformamide, tert-butanol, dibutyl ether, ethyl acetate, acetonitrile, and acetone. Also, a generic equation for linear alkanes is created for use when individual datasets are small. The prediction of enthalpies of solvation is furthered by modifying the Abraham model so that experimental data measured at different temperatures can be included into a single correlation expression. The temperature dependence is directly included in the model …

Voluntarily child free (VCF) individuals face stigmatization in a pronatalist society that labels those who do not want children as deviant. Because of this stigmatization, VCF couples face privacy issues as they choose to reveal or conceal their family planning decision and face a variety of reactions from social network members. Therefore, communication privacy management and communication accommodation theory was use to examine this phenomenon. Prior research found two different types of VCF couples: grounds-based and grounds-free. Grounds-based individuals cite medical or biological reasons for not having children, while grounds-free individuals cite social reasons for not having children. The purpose of this study is to examine how grounds-based and grounds-free VCF couples manage their disclosure of private information and how social network members react to their family planning decision. Findings revealed that grounds-free individuals are more likely to engage in the self-defense hypothesis and grounds-based individuals are more likely to engage in the expressive need hypothesis. Grounds-based individuals were asked about their decision in dyadic situations, whereas grounds-free individuals were asked at group gatherings. Additionally, social network members used under-accommodation strategies the most frequently and grounds-free individuals experienced more name calling than grounds-based. Finally, while grounds-free individuals experienced non-accommodation and …

Cindy McTee, Regents Professor of Composition in the College of Music at the University of North Texas, is one of America's leading composers. Her music is an eclectic blend of the "American" sound that is created by the use of a multiplicity of techniques. This document uses three of McTee's most recent (to date) works for wind band: Timepiece, Ballet for Band and Finish Line, to identify the primary stylistic characteristic's of the composer's music, which include: jazz influence; use of ostinati, pseudo-ostinati and machine-like rhythmic patterns and figures; creation of extended and angular melodic lines; progressive "walking" bass lines; and the use of octatonic and chromatic collections. Through the identification of stylistic characteristics, concise stylistic analysis of the works, interview transcript, list of composer's works to date, and selected discography, this document will add to the limited body of scholarly writing on the composer.

As the current body of instructional communication research focuses primarily on the relationship between teacher and learner, three studies investigating the relationship between learners were completed in order to better understand how student motivation and learning are influenced by learner-to-learner immediacy behaviors within the college classroom environment. Study I resulted in an extensive list of both positive and negative verbal and nonverbal immediacy behaviors commonly used by learners. Study II required the comparison of the behaviors identified in study one to existing measures of teacher to learner immediacy behaviors, producing a new measure focusing on learner-to-learner immediacy. Following a pilot survey, the reliability of this new measure was determined through face validity and factor analysis, producing the Learner-to-Learner Immediacy Behavior Scale. In Study III, the Learner-to-Learner Immediacy Behavior Scale was combined with Christophel's 1990 Immediacy Behavior Scale, Cognitive Learning Scale, Affective Learning Scale, and Trait and State Motivation Scales and administered to 273 undergraduate students to test the affects of common learner-to-learner immediacy behaviors on student state motivation, affective learning, and perceptions of cognitive learning loss. Multiple regression analyses indicated learner-to-learner immediacy as functioning similarly to teacher-to-student immediacy when mediated through state motivation in its influence on student affective learning …

The four stories in this collection follow different, yet strikingly similar, protagonists who are facing crossroads in life. These stories include memories and specific scenes from the past that combine with scenes from the present to trace the development of the characters.

Faithful segregation of chromosomes is ensured by the spindle checkpoint. If a kinetochore does not correctly attach to a microtubule the spindle checkpoint stops cell cycle progression until all chromosomes are attached to microtubules or tension is experienced while pulling the chromosomes. The C. elegans gene, san-1, is required for spindle checkpoint function and anoxia survival. To further understand the role of san-1 in the spindle checkpoint, an RNAi screen was conducted to identify genetic interactions with san-1. The kinetochore gene hcp-1 identified in this screen, was known to have a genetic interaction with hcp-2. Interestingly, san-1(ok1580);hcp-2(ok1757) had embryonic and larval lethal phenotypes, but the phenotypes observed are less severe compared to the phenotypes of san-1(ok1580);hcp-1(RNAi) animals. Both san-1(ok1580);hcp-1(RNAi) and san-1(ok1580);hcp-2(RNAi) produce eggs that may hatch; but san-1(ok1580):hcp-1(RNAi) larvae do not survive to adulthood due to defects caused by aberrant chromosome segregations during development. Y54G9A.6 encodes the C. elegans homolog of bub-3, and has spindle checkpoint function. In C.elegans, bub-3 has genetic interactions with san-1 and mdf-2. An RNAi screen for genetic interactions with bub-3 identified that F31F6.3 may potentially have a genetic interaction with bub-3. This work provided genetic evidence that hcp-1, hcp-2 and F31F6.2 interact with spindle checkpoint …

Our generation has experienced one of the most dramatic changes in how society communicates. Today, we have online information on almost any imaginable topic. However, most of this information is available in only a few dozen languages. In this thesis, I explore the use of parallel texts to enable cross-language information retrieval (CLIR) for languages with scarce resources. To build the parallel text I use the Bible. I evaluate different variables and their impact on the resulting CLIR system, specifically: (1) the CLIR results when using different amounts of parallel text; (2) the role of paraphrasing on the quality of the CLIR output; (3) the impact on accuracy when translating the query versus translating the collection of documents; and finally (4) how the results are affected by the use of different dialects. The results show that all these variables have a direct impact on the quality of the CLIR system.

This dissertation comprises two parts: Part I, which discusses use of second person pronoun in contemporary American poetry; and Part II, The Museum of Coming Apart, which is a collection of poems. As confessional verse became a dominant mode in American poetry in the late 1950s and early 60s, so too did the use of the first-person pronoun. Due in part to the excesses of later confessionalism, however, many contemporary poets hesitate to use first person for fear that their work might be read as autobiography. The poetry of the 1990s and early 2000s has thus been characterized by distance, dissociation, and fracture as poets attempt to remove themselves from the overtly emotional and intimate style of the confessionals. However, other contemporary poets have sought to straddle the line between the earnestness and linearity of confessionalism and the intellectually playful yet emotionally detached poetry of the moment. One method for striking this balance is to employ the second person pronoun. Because "you" in English is ambiguous, it allows the poet to toy with the level of distance in a poem and create evolving relationships between the speaker and reader. Through the analysis of poems by C. Dale Young, Paul Guest, …

Philip Glass' Glassworks (1981) is a six-movement composition for two flutes, two soprano saxophones/clarinets, two tenor saxophones/bass clarinets, two French horns, violas, cellos, and the DX7 electric piano. Glassworks consists of six movements titled "Opening," "Floe," "Island," "Rubric," "Facades," and "Closing." This thesis covers the first movement "Opening." Repetition in musical minimalism confronts traditional prescriptive codes of tonal music and post-tonal music. While challenging the traditional codes, repetition in musical minimalism established new codes for listening to minimal music. This thesis explores the implications of these ideas.

The proliferation of the Internet and online-based social interactions has become an increasingly popular topic with communication scholars. The goal of this study was to explore how massively multi-player online role playing game (MMORPG) players make sense of and negotiate their online social interactions. This study (N = 292) examined how players of SecondLife and World of Warcraft evaluated their online relationships compared to their offline relationships and investigated how different levels of realism within different MMORPGs effected player's online experiences. The results indicated that players of SecondLife placed higher values of emotional closeness to their online relationships when compared to players of World of Warcraft and SecondLife was rated more real by its players than World of Warcraft. Results further indicated that players of SecondLife had higher levels of perceived online emotional closeness when compared to perceived offline emotional closeness. Implications of this study focus on developing a bottom up holistic profile of online game players as opposed to the current top down research model.

N-Acylethanolamines (NAEs) are bioactive acylamides that are present in a wide range of organisms. Because NAE levels in seeds decline during imbibition similar to ABA, a physiological role was predicted for these metabolites in Arabidopsis thaliana seed germination and seedling development. There is also a corresponding increase of AtFAAH (fatty acid amide hydrolase), transcript levels and activity, which metabolizes NAE to ethanolamine and free fatty acids. Based on whole genome microarray studies it was determined that a number of up-regulated genes that were responsive to NAE were also ABA responsive. NAE induced gene expression in these ABA responsive genes without elevating endogenous levels of ABA. It was also determined that many of these NAE/ABA responsive genes were associated with an ABA induced secondary growth arrest, including ABI3. ABI3 is a transcription factor that regulates the transition from embryo to seedling growth, the analysis of transcript levels in NAE treated seedlings revealed a dose dependent, inverse relationship between ABI3 transcript levels and growth, high ABI3 transcript levels were associated with growth inhibition. Similar to ABA, NAE negatively regulated seedling growth within a narrow window of early seedling establishment. When seedlings are exposed to NAE or ABA within the window of sensitivity, …

Infants 5-34 weeks of age were observed in their homes playing with their mothers as part of a longitudinal study. Two mother-infant dyads were observed once per week for twelve weeks, during a ten-minute play session. The purpose of the observation system is to describe contingencies leading to the development of attention-seeking behaviors in typically developing infants. Observations were coded using a type-based format (person engagement, object engagement, supported joint engagement, coordinated joint engagement, and unengaged). Child eye gaze, reaching, and grabbing were coded as well as all child and adult vocalizations. It is suggested that the data from the observation system will help inform and assess the effectiveness of infant and toddler social interventions in autism spectrum disorders and advance our understanding of attention seeking behaviors.

With the rise of "helicopter" parents within primary and secondary education, school officials nationwide have started to address how to manage parental involvement in the educational system, specifically with regard to parent-teacher communication. Beginning in the 1980s, school administrators actively implemented programs targeting increased parental involvement in K-12 public schools, though the use of contact and relationship building strategies, in order to substantiate school-teacher-parent communication and further parental influence over decision making processes. While administrators and parents may view parent-teacher interactions as productive, teachers' negative experiences with parents may lead to stress, burnout, and attrition. Researchers have indicated that between 20 and 50% of first through third year teachers leave the profession due to increased, long-term stress, unrealistic workload, and an overall feeling of decreased personal and professional fulfillment. Likewise, through educational reform initiatives to standardize curriculum and increase parental involvement within public schools, teachers' roles within the educational system have shifted from positions of power, to figureheads for the system. The purpose of this study is to examine public school K-12 teachers' standpoints as they relate to parent-teacher communication.

The purpose of the study was to contribute to the overall understanding of terrorist organizations' use of the Internet and to increase researchers' knowledge of Web site effectiveness. The methodological approach was evaluation of the perceived credibility of Web sites based on existing criteria derived from information users. The Web sites of four terrorist organizations were assessed: two secular nationalist groups, the People's Front for the Liberation of Palestine (PFLP) and Liberation Tigers of Tamil Elam (LTTE or Tamil Tigers); and two religious nationalist groups, Hamas and Hezbollah. The findings of this analysis showed differences in perceived credibility factors among terrorist organizations' Web sites and positive levels of perceived credibility for the Web sites. These findings indicate the potential for positive impressions of the organizations' Web sites by information users, which would help empower the organizations with the capacity to reach their objectives. By using Web sites, these groups can effectively increase their support base through disseminating information, improving recruiting, and attracting monetary contributions, and can establish themselves as legitimate components of society.

Hundreds of reporters gather and interpret news for four English-language newspapers in India's second-largest urban area Kolkata, West Bengal's state capital, which is home to over 4 million people. Journalists from The Statesman, The Telegraph-Kolkata, The Hindustan Times and The Times of India discuss how they collect their stories in Bengali, Hindi, Urdu, and many other languages and write them in English targeting a small but emerging middle-class audience. Whether these articles focus on people-centric urban planning, armed vigilantes in community disputes, dowry death cases, or celebrity culture, all of the reporting involves cultural and ethical challenges. Using semi-structured interviewing and qualitative theme analysis, this study explores how gender, class, and religion affect the decision-making practices of 21 journalists working in Kolkata.

The purpose of this study was to explore the correlation between self-perceived information seeking skills and self-esteem in adolescents and, further, to determine whether this correlation varied according to race and gender. Tenth-grade students from three public high schools in a Midwestern city were given two instruments. Self-perceived information seeking skills were measured using a modified version of the Information Skills Checklist from High Plains Regional Technology in Education Consortium's Profiler website. Self-esteem was measured by the Tennessee Self-Concept Scale, which is designed for students 12 years of age and over. The scale has six separate measures of self-esteem: physical, moral-ethical self, personal self, family self, social self and academic self. These six measures are used to determine overall level of self-esteem. The results showed a statistically significant correlation between self-perceived information seeking skills and at least one facet of self-esteem for all groups measured, with one exception. African American males were the only adolescents to show no correlation between scores from these two instruments. It is hoped that this research will ultimately be used to develop policies regarding the development of information seeking skills in disenfranchised groups.

The use of the cold-formed steel sheet bolted connections without washers is so significant; however, the North American Specifications for the Design of Cold Formed Steel Structural Members, NASPEC, doesn't provide provisions for such connections. The bearing failure of sheet and the shear failure of sheet were considered in this study. For the sheet shear strength, it was found that the NASPEC (2007) design provisions can be used for oversized holes in both single and double shear configurations and for the double shear connections on short slotted holes. For the sheet bearing strength, a new design method was proposed to be used for low and high ductile steel sheets. The method was compared with the NASPEC and the University of Waterloo approach. Washers were still required for single shear connections on short slotted holes. Besides, connections using ASTM A325 bolts yielded higher bearing strength than connections using ASTM A307 bolts.

Federally qualified health centers (FQHCs) that harness the reinforcing nature of collaborative efforts with aging services can better prepare for the future of older adult populations. The purpose of this research was to identify collaborative efforts between FQHCs and aging services and distinguish perceptions and knowledge regarding older adult populations. Executive directors, medical directors and social service directors (N=44) at 31 FQHCs across the state of Texas completed surveys measuring structural, procedural and environmental components of the health center setting. The 2007 Uniform Data System and 2000 US Census provided additional data on health centers use and services. Descriptive statistics analyzed independent variables of health center characteristics. Bivariate analysis determined significance of association between independent variables and levels of collaboration with aging services. Results found that all health centers collaborated with at least one aging service, with more informal than formal partnerships. Respondents indicated major barriers to providing services to older adults, including inadequate transportation, inadequate insurance, and limited funding. Respondents also indicated overloaded staff as a major barrier to collaborating with aging services. Aging topics for staff development and perceptions about older adults were also identified. Health center tenure (p=0.005, lambda=1.000), professional tenure (p=0.011, lambda=1.000), leadership in aging services …

This research is an investigation of the Late Holocene technological transition from the spearthrower and dart to the bow and arrow in north central Texas. It is conducted through a theoretical approach that utilizes ethnographic research, experimental archaeology and the archaeological record to elucidate differences in the behaviors and hunting strategies of Late Archaic and Late Prehistoric groups. It first confirms that there was a transition. Second, a lithic analysis demonstrates that there are fundamental differences in the sizes of the stone dart and arrow points that relate to the propulsive requirements of the weapon systems. Third, it is shown these size differences constrain maintenance potentials and that indeed dart and arrow points exhibit stark differences in their life histories in spite of being employed for the same task. And finally, the faunal record suggests that this transition was associated with an increase in foraging efficiency.

The purpose of this study was to determine the relationships between online readiness scores and online faculty job satisfaction. Online readiness was assessed using the Readiness for Education At a Distance Indicator (READI) assessment. The READI assessment tool incorporated the independent variables of learning preference, technical competency, technical knowledge, personal attributes, on-screen reading speed and comprehension, and typing speed and accuracy. Online faculty job satisfaction was assessed using the National Study of Postsecondary Faculty (NSOPF) job satisfaction questions. Analysis of variance was used to determine whether there was a difference in satisfaction based on individual instructor learning preferences. Correlation coefficients were used to analyze the relationships between the remaining independent variables and online instructor satisfaction. The sample population (N=110) consisted of online faculty members at Tarrant County College. Most of the statistical analyses revealed non-significant results at the .05 alpha level. However, a significant difference in satisfaction with equipment and facilities was found based on instructor learning preference. Additionally, a statistically significant negative correlation was found between online instructor technical competency and satisfaction with benefits.

Literacy is a fundamental to all areas of learning. Early reading experiences prior to elementary school and kindergarten years are critical factors for later reading success. This study evaluated the effect Direct Instruction® reading procedures vs. Scholastic Early Childhood Program® reading procedures on the production of letter names, letter sounds, CV and CVC blends by preschool-aged students in a Head Start program. Results showed the intervention group improved in all areas, while the control group improved only in letter naming and letter sounds. This study discusses reading as a behavioral cusp as well as limitations, and recommendations for future research.

This research lays the foundation of a highly simplified maskless micro-fabrication technique which involves incorporation of laser direct writing technique combined with fountain pen based micro-patterning method to fabricate polymer-based Mach-Zehnder interferometer sensor arrays' prototype for chemical/biological sensing applications. The research provides methodology that focuses on maskless technology, allowing the definition and modification of geometric patterns through the programming of computer software, in contrast to the conventional mask-based photolithographic approach, in which a photomask must be produced before the device is fabricated. The finished waveguide sensors are evaluated on the basis of their performance as general interferometers. The waveguide developed using the fountain pen-based micro-patterning system is compared with the waveguide developed using the current technique of spin coating method for patterning of upper cladding of the waveguide. The resulting output power profile of the waveguides is generated to confirm their functionality as general interferometers. The results obtained are used to confirm the functionality of the simplified micro-fabrication technique for fabricating integrated optical polymer-based sensors and sensor arrays for chemical/biological sensing applications.

This thesis presents a novel ZnO-hydrogel based fluorescent colloidal semiconductor nanomaterial system for potential bio-medical applications such as bio-imaging, cancer detection and therapy. The preparation of ZnO nanoparticles and their surface modification to make a biocompatible material with enhanced optical properties is discussed. High quality ZnO nanoparticles with UV band edge emission are prepared using gas evaporation method. Semiconductor materials including ZnO are insoluble in water. Since biological applications require water soluble nanomaterials, ZnO nanoparticles are first dispersed in water by ball milling method, and their aqueous stability and fluorescence properties are enhanced by incorporating them in bio-compatible poly N-isopropylacrylamide (PNIPAM) based hydrogel polymer matrix. The optical properties of ZnO-hydrogel colloidal dispersion versus ZnO-Water dispersion were analyzed. The optical characterization using photoluminescence spectroscopy indicates approximately 10 times enhancement of fluorescence in ZnO-hydrogel colloidal system compared to ZnO-water system. Ultrafast time resolved measurement demonstrates dominant exciton recombination process in ZnO-hydrogel system compared to ZnO-water system, confirming the surface modification of ZnO nanoparticles by hydrogel polymer matrix. The surface modification of ZnO nanoparticles by hydrogel induce more scattering centers per unit area of cross-section, and hence increase the luminescence from the ZnO-gel samples due to multiple path excitations. Furthermore, surface modification of …