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Life History And Secondary Production Of Cheumatopsyche Lasia Ross (Trichoptera: Hydropsychidae) With Respect To A Wastewater Treatment Facility In A North Texas Urban Stream

Life History And Secondary Production Of Cheumatopsyche Lasia Ross (Trichoptera: Hydropsychidae) With Respect To A Wastewater Treatment Facility In A North Texas Urban Stream

Date: December 2011
Creator: Paul, Jenny Sueanna
Description: This study represents the first shift in multivoltine life history of Cheumatopsyche species from a wastewater treatment plant (WWTP) in North America. Populations of C. lasia were examined upstream and downstream of the Denton’s Pecan Creek WWTP August 2009 through November 2010. C. lasia is multivoltine in Pecan Creek with three cohorts observed upstream of the WWTP and four possible cohorts downstream. A fourth generation was possible downstream as thermal inputs from WWTP effluent resulted in elevated water temperatures that allowed larval development to progress through the winter producing a cohort ready to emerge in spring. Production of C. lasia was 5 times greater downstream of the WWTP with secondary production estimates of 1.3 g m-2 yr-1 and 4.88- 6.51 g m-2 yr-1, respectively. Differences in abundance were due to increased habitat availability downstream of the WWTP in addition to continuous stream flow from inputs of wastewater effluent. Results also suggest that C. lasia is important for energy transfer in semiarid urban prairie streams and may serve as a potential conduit for the transfer of energy along with emergent contaminants to terrestrial ecosystems. These finding highlight the need for more quantitative accounts of population dynamics (voltinism, development rates, secondary production, ...
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El Pensamiento de José Martí tergiversado como Ideología Política y de Lucha por la Revolución Cubana

El Pensamiento de José Martí tergiversado como Ideología Política y de Lucha por la Revolución Cubana

Date: December 2011
Creator: Hidalgo, Ángel L.
Description: The political ideologies that Martí envisioned of an America free from the inherited yoke of European ideals were taken by Fidel Castro as an anti-imperialist discourse. Therefore, Marti’s political vision on the power that the United States began to carry out at the end of the 19th century and the beginning of the 20th century was an excellent strategy to establish the anti-imperialist character of the Cuban revolution. Since 1961, Castro set Martí as the face of his Marxist-Leninist ideology to institute his anti-American philosophy; Castro created a myth of Marti’s persona, and converted him into the bastion of his political ideology. As a result, Castro distorted the revolutionary ideas of Marti’s. Castro proposed his ideas out of context and portrayed the incorrect idea of this great thinker and poet. Martí’s human ethic and love for the independence of Cuba placed Martí as a liberator of revolutionary and progressive ideas of his generation. Martí was not thought as a dictator and never was a man who lacked democratic values. The expressed analytical assimilation of Martí on his sociopolitical and economic juncture that was presented in America and Cuba was used to trace the political anti-imperialist propaganda by the dictatorial regime ...
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Genetic and Environmental Factors that Mediate Survival of Prolonged Oxygen Deprivation in the Nematode Caenorhabditis Elegans

Genetic and Environmental Factors that Mediate Survival of Prolonged Oxygen Deprivation in the Nematode Caenorhabditis Elegans

Date: August 2010
Creator: LaRue, Bobby Lee, Jr.
Description: Ischemic events of even a very short duration are not tolerated Ill in humans. The human cost of ischemia, when looked at as combined cardiovascular disease, dwarfs all other causes of death in the United States. Annually, CVD kills as many people in the US as does cancer, chronic lower respiratory disease, accidents, and diabetes mellitus combined. In 2005 (the latest year for which final statistics are available), CVD was responsible for 864,480 deaths or 35.3 percent of total deaths for the year. In my study, I have used the nematode Caenorhabditis elegans to determine genetic and environmental modulators of oxygen deprivation a key component of ischemia. I have found that animals with mutations in insulin like signaling pathways, neuronal function, electron transport chain components, germline function, and animals that are preconditioned by being raised on a diet of E. coli HT115 bacteria at 25°C have an enhanced ability to survive long-term (>72 hours) anoxia (<.005 kPa O2) at 20°C. The enhanced anoxia survival phenotype partially correlates with increased levels of carbohydrate stores in the nematodes. Suppression of this enhanced anoxia survival phenotype is possible by altering expression of the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase, the FOXO transcription factor DAF-16, and ...
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Electrochemical Quartz Crystal Microbalance Study Of Bismuth Underpotential Deposition On Ruthenium And On Electrochemically Formed Ruthenium Oxide

Electrochemical Quartz Crystal Microbalance Study Of Bismuth Underpotential Deposition On Ruthenium And On Electrochemically Formed Ruthenium Oxide

Date: December 2011
Creator: Lin, Po-Fu
Description: Kinetics and thermodynamics of bismuth (Bi) underpotential deposition (UPD) on ruthenium (Ru) and on electrochemically formed Ru oxide are studied using electrochemical quartz crystal microbalance technique. The Bi UPD and Bi bulk deposition are observed both on Ru and on electrochemically formed Ru oxide electrodes. The anodic peak potential of Bi UPD shifts slightly to positive potential as the scan rate increases. The peak current ratio (IAnode/ICathode) of Bi UPD and Bi bulk increases as the scan rate increases. Bi monolayer coverage calculated from mass (MLMass) and from charge (MLCharge) with scan rates dependent are compared both in Bi UPD region and in Bi bulk region. Stability and oxidation time effects are also investigated. Bi UPD on Ru and on electrochemically formed Ru oxide are quasi-reversible, scan rate independent, oxidation time dependent, and have higher plating efficiency on Ru. However, Bi bulk deposition on Ru and on electrochemically formed Ru oxide are quasi-reversible, scan rate dependent, oxidation time independent, and have higher plating efficiency on electrochemically formed Ru oxide. Both Bi UPD adatoms and Bi bulk are unstable in 0.5M H2SO4.
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Directions Toward a “Happy Place”: Metaphor in Conversational Discourse

Directions Toward a “Happy Place”: Metaphor in Conversational Discourse

Date: December 2011
Creator: Edwards, Jonathan Ryan
Description: This paper aims to show how people use and understand metaphorical language in conversational discourse. Specifically, I examine how metaphorical language has the potential to be either effective or ineffective in its usage, and how they are bound to the contextual environment of the conversation. This particular setting is a conversation between a researcher and a participant involved in a therapeutic program. Metaphorical language is shown to be helpful for understanding difficult subjects; however, I found most metaphorical occurrences ineffective in meaning-making. Often these ineffective metaphors are elaborated or repeated throughout the discourse event, creating problems with cohesion and understanding. Metaphor use in conversation is an effective rhetorical tool for creating meaning, but it is also a problematic device when it comes to aligning participants' conversational goal.
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Economic Mobility into the Planter Class in Texas, 1846-1860

Economic Mobility into the Planter Class in Texas, 1846-1860

Access: Use of this item is restricted to the UNT Community.
Date: December 2011
Creator: Nelson, Robert Nicholas
Description: This study examines upward economic mobility into the planter class in Texas during the antebellum statehood period, 1846-1860. Using quantitative methods to analyze data from census and tax records, this study addresses several questions regarding the property owning experience of Texas planters. Did any of the 1860 planters, men or women, rise to that status from another class? If so, how many rose from small slaveholder or small planter origins, and how many advanced from plain folk origins? In what ways did the amount and nature of wealth of these individuals change in the period studied? In what ways do these findings provide insights into the debate over planter dominance versus ‘plain folk’ inclusive herrenvolk democracy and the relationship between the planters and the other classes? Did the experiences of female planters differ from that of male planters? Did female planter experiences in Texas differ from female planters in other parts of the Old South? The results of these questions demonstrate that economic class mobility into the richest class was significant but limited and that women’s experiences were closely tied to those of male kin.
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A Quantitative Study of the Presidential Search Process and Position Longevity in Community Colleges

A Quantitative Study of the Presidential Search Process and Position Longevity in Community Colleges

Date: December 2011
Creator: Howells, Constance L.
Description: A great deal of time, money, and effort can be expended on hiring community college presidents without any assurance that they will remain in their new positions a substantial amount of time. Building on decades of literature reporting the continuing decrease of presidential longevity, this study examined the methods most successful in selecting presidents with relatively greater longevity and what relationship exists between the type of presidential search used and the length of tenure. An original 18-question survey was e-mailed to 904 community college and two-year institution presidents to capture information about both current and previous presidencies. Participants returned 224 valid responses for a response rate of 24.8%. Results of a generalized linear model (GLM) yielded a statistically significant result showing a positive relationship between the variable Q7STDT1(type of presidential searches in current position) and length of tenure of selected candidates (F = 3.41, p = .006).No significant relationship was found between the selection process used in the immediately previous presidential positions and selected candidates’ longevity in those positions. Information from this study can be used to decide what types of selection process should be used and to indicate further topics of inquiry in this area.
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Etude Comparative Et Intertextuelle Sur Le Thème Des “Fenêtres” Dans Quatre Poèmes De Charles Baudelaire, Stéphane Mallarmé, Marie Krysinska Et Guillaume Apollinaire.

Etude Comparative Et Intertextuelle Sur Le Thème Des “Fenêtres” Dans Quatre Poèmes De Charles Baudelaire, Stéphane Mallarmé, Marie Krysinska Et Guillaume Apollinaire.

Date: December 2011
Creator: Opsitch, Yann
Description: Written in French, this thesis presents a comparative and intertextual study on the theme of « windows » in four poems by Charles Baudelaire, Stéphane Mallarmé, Marie Krysinska and Guillaume Apollinaire. Charles Baudelaire (1821-1867), Stéphane Mallarmé (1842 -1898), Marie Krysinska (1857-1908) and Guillaume Apollinaire (1880-1918) use « windows » as a common theme in their poetry. My study compares this common theme found in four poems: (1) “Les fenêtres” by Charles Baudelaire in Spleen de Paris XXXV, 1869. (2) “Les fenêtres” by Stéphane Mallarmé in Le Parnasse Contemporain, 1863/66. (3) “Les fenêtres” by Marie Krysinska in Rythmes pittoresques, 1890. (4) “Les fenêtres” by Guillaume Apollinaire in Calligrammes (1913-1916), 1918. I focus on what distinguishes these fours poems by following the evolution of poetical forms between symbolism and futurism/surrealism. The common theme (“windows”) provides an opportunity to better underline the formal heterogeneity which separates these different “poetical avenues”: with Baudelaire, the newness of prose poetry; with Mallarmé, the symbolist renewal of a more classic form; with Apollinaire, a form of simultaneity inspired by futurism. The comparative analysis brings to light the original value of the poem written by Krysinska, whose works have not greatly captivated the attention of critics.
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Oh G-d, A Borderline: Clinical Diagnostics As Fundamental Attribution Error

Oh G-d, A Borderline: Clinical Diagnostics As Fundamental Attribution Error

Date: December 2011
Creator: Schmalz, Jonathan
Description: Researchers raise concerns that the diagnostic approach can create stigma and lead to clinical inferences that focus on dispositional characteristics at the expense of situational variables. From social cognitive theory to strict behavioral approaches there is broad agreement that situation is at least as important as disposition. The present study examined the clinical inferences of graduate student clinicians randomly presented a diagnosis (borderline PD) or no diagnosis and either randomly given context information or no context information before watching a videotaped clinical interaction of a fabricated client. Responses to a questionnaire assessing dispositional or situational attributions about the client’s behavior indicated a diagnosis of borderline personality disorder did not significantly increase dispositional attributions and did not significantly moderate the importance of contextual factors. A notable difference between the attributions made by psychodynamic and third wave behavioral respondents was observed. Conceptual and experimental limitations as well as future directions are discussed.
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Early Predictors of Early Freshman Year Attrition in Female Hispanic Students

Early Predictors of Early Freshman Year Attrition in Female Hispanic Students

Date: August 2011
Creator: Speed, Heather Faye
Description: The Texas Hispanic population is projected to grow to 18.8 million, almost tripling its number within the state, in only 30 years. This rapid growth is a concern for Texas higher education because this group has traditionally been under-represented in colleges and universities. Also, according to national, state, and local data, Hispanic students are retained at a lower rate than are other ethnic groups. Because of lower retention rates for Hispanic students and because the majority of Hispanic college students are female, an increasing number of Hispanic women are heads of households. Studying the attrition rates of Hispanic females could provide a better understanding of how the state can improve both the participation and retention rates of this population. This study utilized descriptive statistics and regression analysis to identify the correlations between and among the dependent variable of attrition and independent variables derived from (1) pre-college survey responses measuring college expectations and (2) early-first semester survey responses measuring actual college experience. Institutional data were used to confirm enrollment status at the beginning of the second semester. The sample of the study was all female, full-time, first-time-in college student survey respondents attending a public 4-year institution in Texas. This number included ...
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