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University of Houston
1.
Ahmed, Sara J.
Evaluating the "New York Times'" framing of Islam and Muslims pre- and post-9/11.
Degree: 2007, University of Houston
URL: http://pqdtopen.proquest.com/#viewpdf?dispub=1443827 
► Media play an integral role in forming, the publics' perception on matters of all dimension, varying from the small, entertainment tidbits to the wide-ranging…
(more)
▼ Media play an integral role in forming, the publics' perception on matters of all dimension, varying from the small, entertainment tidbits to the wide-ranging world affairs. This research examines how the news publication, the <i>New York Times</i>, framed the keywords <i>Muslim</i> and <i>Islam</i> before and after the 9/11 attacks. Qualitative and quantitative content analyses were used to evaluate articles published 30-days before and after 9/11/2001. Pre-9/11 data set included analysis of 40 articles for the keyword <i>Islam</i> and 47 articles for the keyword <i>Muslim</i>. Post-9/11 data set included analysis of 139 articles for the keyword <i>Isla</i>m and 160 articles for the keyword <i> Muslim</i>. Results for the pre-9/11 articles indicated that a framework emphasizing the Israeli and Palestinian conflict in Jerusalem dominated both <i> Islam</i> and <i>Muslim</i> data sets, Post-9/11 data sets showed disparate frameworks for the <i>Islam</i> and <i>Muslim </i> articles. <i>Islam</i> was most frequently employed in the context of violence, whereas <i>Muslim</i> was most often applied using a reconciliatory and patriotic frame.
Subjects/Keywords: Journalism; Mass Communications
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APA (6th Edition):
Ahmed, S. J. (2007). Evaluating the "New York Times'" framing of Islam and Muslims pre- and post-9/11. (Thesis). University of Houston. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=1443827
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ahmed, Sara J. “Evaluating the "New York Times'" framing of Islam and Muslims pre- and post-9/11.” 2007. Thesis, University of Houston. Accessed May 24, 2020.
http://pqdtopen.proquest.com/#viewpdf?dispub=1443827.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ahmed, Sara J. “Evaluating the "New York Times'" framing of Islam and Muslims pre- and post-9/11.” 2007. Web. 24 May 2020.
Vancouver:
Ahmed SJ. Evaluating the "New York Times'" framing of Islam and Muslims pre- and post-9/11. [Internet] [Thesis]. University of Houston; 2007. [cited 2020 May 24].
Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1443827.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ahmed SJ. Evaluating the "New York Times'" framing of Islam and Muslims pre- and post-9/11. [Thesis]. University of Houston; 2007. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1443827
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Houston
2.
Coones, Julie Dennis.
Cardinal directionality in Maya burials.
Degree: 2007, University of Houston
URL: http://pqdtopen.proquest.com/#viewpdf?dispub=1443834
► Previous research established the prevalence of cardinal directions in Maya thought and worldview as evidenced in architecture, settlement patterns, calendrical systems, and certain functions…
(more)
▼ Previous research established the prevalence of cardinal directions in Maya thought and worldview as evidenced in architecture, settlement patterns, calendrical systems, and certain functions of the gods. However, the possible association of the cardinal directions and Maya burial practices has not been studied. Thus, this research investigated the use of the cardinal directions in Maya burial practices, to establish their function as determinants in the placement of the body. Data was analyzed from the Maya sites of K'axob, Belize, and Gordon Phase, Rural Copán, and Group 9N-8 at Copán, Honduras. Initial hypotheses proposed that the use of cardinal directionality in placement of the body in burial would be established through this study, and that primary emphasis would be on the directions of <i>North</i> and <i>West</i>. However, results of this study revealed that primary emphasis was on <i>South, North</i> and <i>West</i>, with the Southern direction unexpected.
Subjects/Keywords: Anthropology; Archaeology
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APA (6th Edition):
Coones, J. D. (2007). Cardinal directionality in Maya burials. (Thesis). University of Houston. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=1443834
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Coones, Julie Dennis. “Cardinal directionality in Maya burials.” 2007. Thesis, University of Houston. Accessed May 24, 2020.
http://pqdtopen.proquest.com/#viewpdf?dispub=1443834.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Coones, Julie Dennis. “Cardinal directionality in Maya burials.” 2007. Web. 24 May 2020.
Vancouver:
Coones JD. Cardinal directionality in Maya burials. [Internet] [Thesis]. University of Houston; 2007. [cited 2020 May 24].
Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1443834.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Coones JD. Cardinal directionality in Maya burials. [Thesis]. University of Houston; 2007. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1443834
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Houston
3.
Cloud, Kara Lee.
Walking between the worlds| Performative transmission of contemporary Scottish Gaidhlig identities.
Degree: 2007, University of Houston
URL: http://pqdtopen.proquest.com/#viewpdf?dispub=1444785
► Contemporary Scottish Gaidhlig social bonds are formed and given meaning through <i>ceilidean</i> (arts performance and participation gatherings) and <i>feisean</i> (Gaidhlig arts tuition workshops). These…
(more)
▼ Contemporary Scottish Gaidhlig social bonds are formed and given meaning through <i>ceilidean</i> (arts performance and participation gatherings) and <i>feisean</i> (Gaidhlig arts tuition workshops). These social forms are a locus for creating community and serve as a place in which to negotiate the meanings of identity and tradition. While some of these meanings stand in opposition to the diversity of cultural icons and images portrayed by Gaidhlig promotion and revitalization agencies, each takes its place as a legitimate and viable expression of Scottish Gaidhlig community and association.
Subjects/Keywords: Anthropology; Cultural
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APA (6th Edition):
Cloud, K. L. (2007). Walking between the worlds| Performative transmission of contemporary Scottish Gaidhlig identities. (Thesis). University of Houston. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=1444785
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Cloud, Kara Lee. “Walking between the worlds| Performative transmission of contemporary Scottish Gaidhlig identities.” 2007. Thesis, University of Houston. Accessed May 24, 2020.
http://pqdtopen.proquest.com/#viewpdf?dispub=1444785.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cloud, Kara Lee. “Walking between the worlds| Performative transmission of contemporary Scottish Gaidhlig identities.” 2007. Web. 24 May 2020.
Vancouver:
Cloud KL. Walking between the worlds| Performative transmission of contemporary Scottish Gaidhlig identities. [Internet] [Thesis]. University of Houston; 2007. [cited 2020 May 24].
Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1444785.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cloud KL. Walking between the worlds| Performative transmission of contemporary Scottish Gaidhlig identities. [Thesis]. University of Houston; 2007. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1444785
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Houston
4.
O'Brien, Shellee.
A Madisonian framework for civic involvement.
Degree: 2015, University of Houston
URL: http://pqdtopen.proquest.com/#viewpdf?dispub=3663755
► Popular government in the United States requires an American citizenry capable to confront the difficult questions of a self-governing people. As political science deepens…
(more)
▼ Popular government in the United States requires an American citizenry capable to confront the difficult questions of a self-governing people. As political science deepens our understanding of the political behavior of the American people, it also narrows our understanding of the citizen's role to election cycles and policy outcomes. The Madisonian Framework for Civic Involvement represents an understanding of the citizen's role as complex and varied as the proposition of popular government itself. The Framework traces three themes (interaction, input and integration) that recur in James Madison's writing as a political theorist and his work as a political actor. Rather than a prescription of specific behaviors required from each individual, Madison's work provides a framework for understanding the patterns, perspectives and principles giving shape to an American citizenry capable of countering the worst tendencies of popular government and their own nature. The work presented here revisits an understanding of the citizen's role as Madison imagined it, embedded in his commitments about the proper role of government, the institutional scheme of an extensive republic and the lessons of America's past. The Framework demonstrates how the study of American Political Behavior has worked to shrink our ideas about the citizen's role while promoting studies constrained by specific commitments about the relationship between citizens and government. The Madisonian Framework for Civic Involvement makes it possible to suspend debate over Madison's liberal, democratic or civic republican commitments in order to extend our own understanding of civic involvement as it aligns with the more complex understanding of the nature of humankind and government that guided the original design of the American system of government. Finally, the author demonstrates how the Framework has potential to help us understand the political debates (Lincoln-Douglas Debates), social programs (President Johnson's Community Action Programs) and policy initiatives (President Obama's online petition) of the past and future where the understanding of the citizen's role makes all the difference.
Subjects/Keywords: American history; Political science
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APA (6th Edition):
O'Brien, S. (2015). A Madisonian framework for civic involvement. (Thesis). University of Houston. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3663755
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
O'Brien, Shellee. “A Madisonian framework for civic involvement.” 2015. Thesis, University of Houston. Accessed May 24, 2020.
http://pqdtopen.proquest.com/#viewpdf?dispub=3663755.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
O'Brien, Shellee. “A Madisonian framework for civic involvement.” 2015. Web. 24 May 2020.
Vancouver:
O'Brien S. A Madisonian framework for civic involvement. [Internet] [Thesis]. University of Houston; 2015. [cited 2020 May 24].
Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3663755.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
O'Brien S. A Madisonian framework for civic involvement. [Thesis]. University of Houston; 2015. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3663755
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
5.
Aumand, Matthieu.
Deformation mechanisms of nanostructured thermoelectric alloys : Mécanismes de déformations de matériaux thermoélectriques nanostructurés.
Degree: Docteur es, Milieux denses, Matériaux et Composants, 2018, Poitiers; University of Houston
URL: http://www.theses.fr/2018POIT2281
► L’amélioration de la figure de mérite ZT des matériaux thermoélectriques (TE) est actuellement entreprise via des procédés de métallurgie, tels que la nanostructuration et l’introduction…
(more)
▼ L’amélioration de la figure de mérite ZT des matériaux thermoélectriques (TE) est actuellement entreprise via des procédés de métallurgie, tels que la nanostructuration et l’introduction contrôlée de dislocations. De tels niveaux de complexité de microstructure soulèvent la problématique du comportement mécanique associé. En effet, malgré les valeurs de dureté et module d’élasticité connues pour la plupart des matériaux TE, rares sont les données sur les mécanismes de déformation. Portant sur le Half-Heusler Hf0.44Zr0.44Ti0.12CoSb0.8Sn0.2 de type p, notre étude multi-échelle propose de caractériser les mécanismes de déformation de cet alliage. Les expérimentations menées aux échelles macroscopique, mésoscopique, et microscopique sont pensées pour déclencher puis examiner les mécanismes de plasticité. Les tests en compression sur échantillons massifs dans un environnement de pression de confinement et température ont aboutis à une rupture exclusivement fragile. Les mécanismes de rupture sont identifiés comme associés une propagation de fissure intra- et inter granulaire, dépendant de la taille de grain rencontrée par le front de fissure. La méthode « indentation toughness » à l’échelle mésoscopique permet l’insertion de fissures, où les analyses MET en front de fissure confirment une abscence d’activité de dislocations, également confirmé par 3D-EBSD. À l’échelle microscopique, les données de compression de micro-pilliers ainsi que les observations de faciès de fracture sont comparable avec les échantillons massifs. Ces résultats peuvent être utilisés comme guide pour produire des matériaux TE plus résistants à la fissuration.
Increasing the figure of merit ZT of thermoelectric (TE) alloys is a challenge that is currently attempted through various metallurgy methods, including nanostructuring and dislocation engineering. Microstructures with such level of complexity raises questions about the mechanical reliability of these new materials. Indeed, despite the values of hardness and elastic modulus known for the clear majority of TE materials, the data on deformation mechanisms are still rare. Focusing on the nanostructured p-type half-Heusler Hf0.44Zr0.44Ti0.12CoSb0.8Sn0.2, our multi-scale study aims to analyze the deformation mechanisms. Experiments conducted at macro-, meso- and micro-scale are designed to trigger and assess plasticity mechanisms. Compression testing on bulk samples subject to a confining pressure environment and temperature leads to an exclusive brittle failure. The mixed-mode failure mechanisms involve switching between intra- and inter-granular crack propagation, depending on the grain size met by the crack tip. Indentation toughness at meso-scale generates cracks, while TEM analysis of the crack tip area confirms no dislocation activity and 3D-EBSD technique confirms the mixed crack propagation behavior. At micro-scale, micro-pillar compression stress-strain curves and failure mechanisms are comparable with bulk samples testing analysis. These results can be used to provide design guidelines…
Advisors/Committee Members: Thilly, Ludovic (thesis director), White, Ken W. (thesis director).
Subjects/Keywords: Thermoélectrique; Propriétés mécaniques; Half-Heusler; Dislocations; Fracture; Thermoelectric; Mechanical properties; Half-Heusler; Dislocations; Fracture; 620.115
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APA ·
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APA (6th Edition):
Aumand, M. (2018). Deformation mechanisms of nanostructured thermoelectric alloys : Mécanismes de déformations de matériaux thermoélectriques nanostructurés. (Doctoral Dissertation). Poitiers; University of Houston. Retrieved from http://www.theses.fr/2018POIT2281
Chicago Manual of Style (16th Edition):
Aumand, Matthieu. “Deformation mechanisms of nanostructured thermoelectric alloys : Mécanismes de déformations de matériaux thermoélectriques nanostructurés.” 2018. Doctoral Dissertation, Poitiers; University of Houston. Accessed May 24, 2020.
http://www.theses.fr/2018POIT2281.
MLA Handbook (7th Edition):
Aumand, Matthieu. “Deformation mechanisms of nanostructured thermoelectric alloys : Mécanismes de déformations de matériaux thermoélectriques nanostructurés.” 2018. Web. 24 May 2020.
Vancouver:
Aumand M. Deformation mechanisms of nanostructured thermoelectric alloys : Mécanismes de déformations de matériaux thermoélectriques nanostructurés. [Internet] [Doctoral dissertation]. Poitiers; University of Houston; 2018. [cited 2020 May 24].
Available from: http://www.theses.fr/2018POIT2281.
Council of Science Editors:
Aumand M. Deformation mechanisms of nanostructured thermoelectric alloys : Mécanismes de déformations de matériaux thermoélectriques nanostructurés. [Doctoral Dissertation]. Poitiers; University of Houston; 2018. Available from: http://www.theses.fr/2018POIT2281
University of Houston
6.
Brooks, Keith Jarrod.
HOW DO PRINCIPALS AND ASSISTANT PRINCIPALS DIFFER IN THEIR BELIEFS REGARDING THE CHARACETRISTICS AND CULTURE OF A GOOD SCHOOL.
Degree: EdD, Administration and Supervision, 2014, University of Houston
URL: http://hdl.handle.net/10657/1690
► Culture plays a significant role in promoting student achievement in schools, and it has the ability to support or sabotage not only student success but…
(more)
▼ Culture plays a significant role in promoting student achievement in schools, and it has the ability to support or sabotage not only student success but also quality professional learning and is the basis for school improvement (Schein, 1996; Saphier & King, 1985; Landry, 2012). In order to establish and maintain the culture of a school, the principal and assistant principal must share core beliefs of an effective school and healthy school culture. When the principal of the school is absent or unavailable, the assistant principal assumes the leadership role for the campus. Misalignment between their beliefs of the mission and vision of the school can create dissonance, which can lead to a climate and culture of disarray. The perceptions of principals and assistant principals regarding what constitutes a good school and the culture that contributes to a good school are pivotal to sustain a healthy learning environment for teachers and students. This study compared the perceptions of 311 principals and 371 assistant principals regarding the characteristics and culture necessary for a good school to succeed. The administrators that were surveyed are in the Gulf Coast Region of Southeast Texas and the data is archival in nature. The principals and assistant principals were given surveys and participated in interviews to examine their perceptions of the culture and characteristics of a good school. Themes and categories were identified by two different researchers as major indicators of a good school. This study will answer two research questions: 1. Do differences exist in the perceptions of principals and assistant principals regarding the characteristics of a good school?; and 2. Do differences exist in the perceptions of
ix
principals and assistant principals regarding the culture of a good school?. With the use of archival data, the study examined themes/categories as described in previous studies and was able to answer the research questions. The findings in this study indicate there are differences that exist in the perceptions of principal and assistant principals regarding the characteristics of a good school and the culture of a good school. The differences in the perception concerning the characteristics of a good school were first identified in the categories that were identified from the responses of the principals and assistant principals. Principals’ descriptors included Academic Focus and Student Centered while assistant principals included Student Achievement and Students Discipline. The categories that were similar accounted for at least 50% of the responses given by both administrators. Regarding the perception of the administrators to the culture of a good school, the data reports show at least 65% of the responses of the principals and assistant principals are in agreement. The differences exist within Academic Focus and Student Achievement; only 35% of the responses for principals are in agreement and only 34% for assistant principals are in agreement respectively. These themes were not in the…
Advisors/Committee Members: Busch, Steven D. (advisor), MacNeil, Angus J. (advisor), Borneman, Robert C. (committee member), McGlohn, Robin (committee member).
Subjects/Keywords: Culture; Good schools
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APA (6th Edition):
Brooks, K. J. (2014). HOW DO PRINCIPALS AND ASSISTANT PRINCIPALS DIFFER IN THEIR BELIEFS REGARDING THE CHARACETRISTICS AND CULTURE OF A GOOD SCHOOL. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1690
Chicago Manual of Style (16th Edition):
Brooks, Keith Jarrod. “HOW DO PRINCIPALS AND ASSISTANT PRINCIPALS DIFFER IN THEIR BELIEFS REGARDING THE CHARACETRISTICS AND CULTURE OF A GOOD SCHOOL.” 2014. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1690.
MLA Handbook (7th Edition):
Brooks, Keith Jarrod. “HOW DO PRINCIPALS AND ASSISTANT PRINCIPALS DIFFER IN THEIR BELIEFS REGARDING THE CHARACETRISTICS AND CULTURE OF A GOOD SCHOOL.” 2014. Web. 24 May 2020.
Vancouver:
Brooks KJ. HOW DO PRINCIPALS AND ASSISTANT PRINCIPALS DIFFER IN THEIR BELIEFS REGARDING THE CHARACETRISTICS AND CULTURE OF A GOOD SCHOOL. [Internet] [Doctoral dissertation]. University of Houston; 2014. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1690.
Council of Science Editors:
Brooks KJ. HOW DO PRINCIPALS AND ASSISTANT PRINCIPALS DIFFER IN THEIR BELIEFS REGARDING THE CHARACETRISTICS AND CULTURE OF A GOOD SCHOOL. [Doctoral Dissertation]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/1690
University of Houston
7.
Bhagunde, Pratik 1983-.
Mathematical modeling the effect of antimicrobials on heterogeneous bacterial populations.
Degree: PhD, Chemical Engineering, 2012, University of Houston
URL: http://hdl.handle.net/10657/779
► This dissertation comprises of six chapters with chapters 2-4 being individual case studies, each case study corresponding to a project involving use of mathematical modeling…
(more)
▼ This dissertation comprises of six chapters with chapters 2-4 being individual case studies, each case study corresponding to a project involving use of mathematical modeling to characterize the effect of antimicrobials on bacterial populations.
In the second chapter a novel mathematical modeling framework to characterize the inoculum effect is proposed. In our approach the inoculum effect was solely attributed to reduced effective drug exposure. Accordingly, a simplified model pharmacodynamic model was developed where the reduced effective drug exposure was expressed as a function of initial bacterial burden. A case of Escherichia coli against a combination of piperacillin and tazobactum was used to characterize the model and validate the model assumptions.
In the third chapter, a pharmacodynamic model was used to characterize the biphasic killing profiles observed for the effect of flouroquinolones against both gram-positive and gram-negative bacteria. Time-kill experiment data for the Escherichia coli against moxifloxacin and Staphyloccocus aureus against levofloxacin was used to characterize the model. Further, the model was used to make predictions regarding the design of the optimal dosing strategy which was selectively validated in the Hollow Fiber Infection Model.
In chapter four, the issue of fluctuating bacterial susceptibilities in the presence of a combination antibiotic and inhibitor was addressed using a novel modeling approach. Instantaneous Minimum Inhibitory Concentration (MICi) was defined to capture fluctuating susceptibilities. A theoretical concept capturing fluctuating susceptibility over time was used to define a novel pharmacodynamic index (Time above instantaneous MIC [T > MICi]). The approach was illustrated using a novel beta-lactamase inhibitor MK-7655 in combination with imipenem against a clinical isolate of Klesiella pneumonia Klebseilla pneumoniae.
Finally in the fourth chapter mathematical modeling was used to characterize immune-response (granulocyte clearance) against bacterial infections. The semi-mechanistic immune response model was then integrated with a drug effect model to characterize bacterial dynamics in the presence of both immune and drug pressure. The immune-response model was used to characterize bacterial time-kill dynamics for naïve and neutropenic mice. The immune-drug integrated model was later used to model the invivo time-kill data for naïve and neutropenic mice infected with Klebsiella pneumoniae
(KP-1470) treated with PF-05081090.
Advisors/Committee Members: Nikolaou, Michael (advisor), Conrad, Jacinta C. (committee member), Varadarajan, Navin (committee member), Tam, Vincent H. (committee member), Garey, Kevin W. (committee member).
Subjects/Keywords: Mathematical modeling; Antimicrobials; Bacteria; Heterogeneity; Chemical engineering
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APA (6th Edition):
Bhagunde, P. 1. (2012). Mathematical modeling the effect of antimicrobials on heterogeneous bacterial populations. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/779
Chicago Manual of Style (16th Edition):
Bhagunde, Pratik 1983-. “Mathematical modeling the effect of antimicrobials on heterogeneous bacterial populations.” 2012. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/779.
MLA Handbook (7th Edition):
Bhagunde, Pratik 1983-. “Mathematical modeling the effect of antimicrobials on heterogeneous bacterial populations.” 2012. Web. 24 May 2020.
Vancouver:
Bhagunde P1. Mathematical modeling the effect of antimicrobials on heterogeneous bacterial populations. [Internet] [Doctoral dissertation]. University of Houston; 2012. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/779.
Council of Science Editors:
Bhagunde P1. Mathematical modeling the effect of antimicrobials on heterogeneous bacterial populations. [Doctoral Dissertation]. University of Houston; 2012. Available from: http://hdl.handle.net/10657/779
University of Houston
8.
-7978-8253.
Cretaceous to Cenozoic Tectonics of North America: From Intraplate Magmatism to Intracontinental Rifting.
Degree: PhD, Geology, 2016, University of Houston
URL: http://hdl.handle.net/10657/5409
► The tectonic mechanism driving Cretaceous magmatism in the Gulf of Mexico (GoM) region is debated. This magmatism postdates GoM seafloor spreading by 40 Myr, initiated…
(more)
▼ The tectonic mechanism driving Cretaceous magmatism in the Gulf of Mexico (GoM) region is debated. This magmatism postdates GoM seafloor spreading by 40 Myr, initiated at 108 Ma and lasted through the Cretaceous. Spanning Texas to Mississippi it consists of igneous rocks with geochemical signatures pointing to a sub-lithospheric mantle origin. Hypotheses for this magmatism include: (1) the Bermuda hotspot; (2) edge-driven convection; (3) lithospheric reactivation; and (4) deep, low-angle subduction. My research shows none are fully satisfactory and that GoM magmatism should be correlated to other Cretaceous – Eocene kimberlites and lamproites from Arkansas to the Northwest Territories. They are located 1000+ km inboard from, and aligned sub-parallel to, the western margin of North America (NA). I propose that the Farallon slabs stagnated in the mantle transition zone in the Early Cretaceous, and generated sporadic, dense, low-degree partial melts by dehydration and decarbonation. As the slabs penetrated the lower mantle, instabilities at slab edges caused upwelling that brought alkali-rich carbonatitic melts to the base of the lithosphere. Subsequently, the NA lithosphere with varying thickness, discontinuities, and compositions interacted with the rising melt, producing a variety of magmatic rocks. This model connects intraplate magmatism with slab stagnation, and provides a critical constraint on the Cretaceous NA history.
Following the Laramide orogeny, Cenozoic extension dominated the western US, forming the Rio Grande rift (RGR). Kinematics of the extension is critical to evaluate tectonic models. While the N-trending, right-stepping RGR largely shows orthogonal E-W extension, the NW-striking, oblique Tusas segment preserves W- and SW-trending slip directions. While a multi-directional extension model is possible, a continuous E-W extension with reactivation of pre-existing weakness can alternatively explain slip direction variations. Initial extension on reactivated faults was recorded by W-trending slickenlines. Subsequently, extension was re-oriented to SW-trending, i.e., pure dip-slip, due to local stress rotation across heterogeneities. Then, the Embudo accommodation zone began to accommodate E-W extension, causing diffuse, SSW-directed slip on the Tusas segment. The early extension along the Tusas segment was abandoned once the Embudo transfer fault formed. This study highlights the significance of obliquity and inherited heterogeneity in the kinematic evolution of rifts.
Advisors/Committee Members: Murphy, Michael A. (advisor), Snow, Jonathan E. (committee member), Robinson, Alexander C. (committee member), Van Wijk, Jolante W. (committee member).
Subjects/Keywords: Gulf of Mexico; Post-breakup magmatism; Carbonatite; Kimberlite; Mantle; Slab stagnation; Rio Grande rift; Tusas Mountains; Oblique extension; Reactivation; Stress rotation
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APA (6th Edition):
-7978-8253. (2016). Cretaceous to Cenozoic Tectonics of North America: From Intraplate Magmatism to Intracontinental Rifting. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/5409
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-7978-8253. “Cretaceous to Cenozoic Tectonics of North America: From Intraplate Magmatism to Intracontinental Rifting.” 2016. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/5409.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-7978-8253. “Cretaceous to Cenozoic Tectonics of North America: From Intraplate Magmatism to Intracontinental Rifting.” 2016. Web. 24 May 2020.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-7978-8253. Cretaceous to Cenozoic Tectonics of North America: From Intraplate Magmatism to Intracontinental Rifting. [Internet] [Doctoral dissertation]. University of Houston; 2016. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/5409.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-7978-8253. Cretaceous to Cenozoic Tectonics of North America: From Intraplate Magmatism to Intracontinental Rifting. [Doctoral Dissertation]. University of Houston; 2016. Available from: http://hdl.handle.net/10657/5409
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
University of Houston
9.
Liu, Yan 1988-.
NUMERICAL AND EXPERIMENTAL STUDY OF MRI RF SIGNAL INTERACTIONS WITH VARIOUS MEDICAL DEVICES.
Degree: PhD, Electrical Engineering, 2012, University of Houston
URL: http://hdl.handle.net/10657/830
► This dissertation consists of three topics related to the RF-induced heating on medical devices in the magnetic resonance imaging (MRI) system. The first topic is…
(more)
▼ This dissertation consists of three topics related to the RF-induced heating on medical devices in the magnetic resonance imaging (MRI) system. The first topic is the RF heating for passive medical devices. Electromagnetic simulation using the Finite Difference Time Domain (FDTD) method and thermal simulation are applied to understand the potential temperature increase inside the human body when the patient with an implantable device undergoes the MR scanner. Measurements are performed to validate simulation results. For devices with multiple components and complex structures, e.g., the external fixation devices, the RF heating mechanism is discussed extensively by investigating various parameters that can contribute to the device’s RF heating effect.
The second topic is the RF heating for active implantable medical devices (AIMDs). It is studied using alternative approaches due to the fine features inside leads attached to AIMDs. The Tier 2 approach proposed by the International Electrotechnical Commission (IEC) is used to study the RF effect on leads tip under different configurations such as coil dimension, patient loading location in MRI, tissue properties as well as leads winding pattern. Due to the overestimation of the Tier 2 approach, another method based on the reciprocity theorem is used to establish the relationship between incident fields and field intensity at leads tip to estimate the temperature rise. This method is proven to be a powerful method to estimate the RF heating for leads structure on AIMDs.
The third topic covers the measurement uncertainty of using fiber optic thermal probes in the RF heating assessment. The fiber optic probes which are used to measure temperature rise around the medical device can lead to significant temperature variation from the original temperature without probes. Three medical devices have been investigated to quantify the effect on the change of temperature rise due to the existence of thermal probes. It is found that thermal probes have more influence on the temperature rise around small and tiny structures such as screws and leads.
Advisors/Committee Members: Chen, Ji (advisor), Jackson, David R. (committee member), Wilton, Donald R. (committee member), Zouridakis, George (committee member), Benhaddou, Driss (committee member).
Subjects/Keywords: MRI Safety; Medical devices; Finite-difference time-domain; RF Heating; Electrical engineering
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APA (6th Edition):
Liu, Y. 1. (2012). NUMERICAL AND EXPERIMENTAL STUDY OF MRI RF SIGNAL INTERACTIONS WITH VARIOUS MEDICAL DEVICES. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/830
Chicago Manual of Style (16th Edition):
Liu, Yan 1988-. “NUMERICAL AND EXPERIMENTAL STUDY OF MRI RF SIGNAL INTERACTIONS WITH VARIOUS MEDICAL DEVICES.” 2012. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/830.
MLA Handbook (7th Edition):
Liu, Yan 1988-. “NUMERICAL AND EXPERIMENTAL STUDY OF MRI RF SIGNAL INTERACTIONS WITH VARIOUS MEDICAL DEVICES.” 2012. Web. 24 May 2020.
Vancouver:
Liu Y1. NUMERICAL AND EXPERIMENTAL STUDY OF MRI RF SIGNAL INTERACTIONS WITH VARIOUS MEDICAL DEVICES. [Internet] [Doctoral dissertation]. University of Houston; 2012. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/830.
Council of Science Editors:
Liu Y1. NUMERICAL AND EXPERIMENTAL STUDY OF MRI RF SIGNAL INTERACTIONS WITH VARIOUS MEDICAL DEVICES. [Doctoral Dissertation]. University of Houston; 2012. Available from: http://hdl.handle.net/10657/830
University of Houston
10.
Idrogo, Sylvia.
A Program Evaluation of Read 180 Reading Intervention Program: Administrators', Teachers', and Students' Perceptions of the Impact of Read 180 on Seventh and Eighth Grade Middle School Students with Learning Disabilities in One Large Urban School District.
Degree: EdD, Professional Leadership, 2015, University of Houston
URL: http://hdl.handle.net/10657/2007
► This study focused on evaluating the READ 180 reading intervention program which is designed for students in grades 4 through 12 at least two years…
(more)
▼ This study focused on evaluating the READ 180 reading intervention program which is designed for students in grades 4 through 12 at least two years below level. The goal of READ 180 is to address the unique needs of adolescent learners and their literacy gaps through the use of literature, direct instruction in reading skills, and a computer program. In the 21st century, adolescents will have to read and write more than any other time in human history (National Institute for Literacy, 2007). As schools strive to improve student literacy, more than ever, districts are turning to programs such as READ 180 as a solution to ensure reading proficiency. Even though there are numerous research studies on the benefits of READ 180 (Caggiano, 2007; Papalewis, 2004; Scholastic, 2002), there is limited research that specifically focuses on whether or not READ 180 meets the needs of students with learning disabilities and students with learning disabilities who are English Language Learners (ELLs). This program evaluation examined administrators’, teachers’, and students’ perceptions of the impact of the READ 180 reading intervention program on reading comprehension skills in seventh and eighth grade middle school students with learning disabilities and seventh and eighth grade middle school students with learning disabilities who are English Language Learners (ELLs).
Multiple sources of data were utilized for this program evaluation. Frequency
distributions were used to analyze students’ survey responses. The constant comparison method was used to categorize, compare, and theme data collected from focus groups and interviews (Charmaz, 2006; Glaser & Strauss, 1967).
Findings among students, READ 180 teachers, and administrators were similar, indicating the READ 180 program positively impacted students’ confidence in, and motivation toward reading. Additionally, findings revealed students, teachers, and administrators perceived the teacher has the greatest impact on improving reading comprehension skills. Students did not perceive their attitudes toward reading were influenced by READ 180; however, on their survey responses they indicated that they enjoyed reading and felt successful when reading. READ 180 teachers thought the program did influence students’ attitudes toward reading. During the focus groups, English Language Learners (ELLs) responded that the READ 180 did represent their cultural backgrounds and met their language learning needs; although, their survey data indicated students’ were not able to make connections to their family and home life when they read the stories, books, or completed the activities in the READ 180 class. Student focus group data revealed they perceived that the technology in READ 180 did facilitate their reading comprehension; however, their survey data indicated the computer as the least helpful of the program. READ 180 teachers perceived the technology in READ 180 did facilitate students’ reading comprehension while administrators perceived the technology did not facilitate students’…
Advisors/Committee Members: MacNeil, Angus J. (advisor), McGlohn, Robin (committee member), Borneman, Robert C. (committee member), Busch, Steven D. (committee member), Emerson, Wayne W. (committee member).
Subjects/Keywords: READ 180
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APA (6th Edition):
Idrogo, S. (2015). A Program Evaluation of Read 180 Reading Intervention Program: Administrators', Teachers', and Students' Perceptions of the Impact of Read 180 on Seventh and Eighth Grade Middle School Students with Learning Disabilities in One Large Urban School District. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/2007
Chicago Manual of Style (16th Edition):
Idrogo, Sylvia. “A Program Evaluation of Read 180 Reading Intervention Program: Administrators', Teachers', and Students' Perceptions of the Impact of Read 180 on Seventh and Eighth Grade Middle School Students with Learning Disabilities in One Large Urban School District.” 2015. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/2007.
MLA Handbook (7th Edition):
Idrogo, Sylvia. “A Program Evaluation of Read 180 Reading Intervention Program: Administrators', Teachers', and Students' Perceptions of the Impact of Read 180 on Seventh and Eighth Grade Middle School Students with Learning Disabilities in One Large Urban School District.” 2015. Web. 24 May 2020.
Vancouver:
Idrogo S. A Program Evaluation of Read 180 Reading Intervention Program: Administrators', Teachers', and Students' Perceptions of the Impact of Read 180 on Seventh and Eighth Grade Middle School Students with Learning Disabilities in One Large Urban School District. [Internet] [Doctoral dissertation]. University of Houston; 2015. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/2007.
Council of Science Editors:
Idrogo S. A Program Evaluation of Read 180 Reading Intervention Program: Administrators', Teachers', and Students' Perceptions of the Impact of Read 180 on Seventh and Eighth Grade Middle School Students with Learning Disabilities in One Large Urban School District. [Doctoral Dissertation]. University of Houston; 2015. Available from: http://hdl.handle.net/10657/2007
University of Houston
11.
Zhang, Zhen 1990-.
Impact of the Topography of the Acquisition Surface on Preprocessing and Subsequent Free Surface Multiple Elimination and Depth Migration: Examining the Issue and Providing a Preprocessing Response That Accommodates a Variable Topography - Thereby Allowing Subsequent Multiple Removal and Imaging Methods to Deliver Their Promise and Potential.
Degree: PhD, Physics, 2017, University of Houston
URL: http://hdl.handle.net/10657/4800
► This dissertation studies the influence of the topography of the seismic acquisition surface on seismic processing. This is important because in real off-shore and on-shore…
(more)
▼ This dissertation studies the influence of the topography of the seismic acquisition surface on seismic processing. This is important because in real off-shore and on-shore acquisition, there are many cases in which seismic data have to be acquired along a surface that can be far from horizontal.
This dissertation provides three advances and contributions. The first examines the issues in preprocessing when the acquisition surface is assumed to be horizontal and it is actually non-horizontal. To address and solve those issues, a new preprocessing formula is derived which accommodates the topography of the measurement surface. Numerical examples compare the preprocessing results that ignore the acquisition topography, and the preprocessing results that accommodate the acquisition topography.
The second investigates the effectiveness of inverse scattering series (ISS) free surface multiple elimination that requires deghosted data, where the deghosted data is input with and without the assumption of horizontal acquisition. Comparison with numerical examples demonstrates that effective deghosting, that includes and accommodates the acquisition surface, is a prerequisite for free surface multiple elimination to deliver its capability.
The third looks at the subsequent effectiveness of depth imaging, that uses different free surface multiple elimination results from the second advance as input. Quantitative analysis is provided that defines the positive effect of accommodating acquisition topography in preprocessing steps on depth imaging results.
Advisors/Committee Members: Weglein, Arthur B. (advisor), Pinsky, Lawrence S. (committee member), Stokes, Donna W. (committee member), Morrison, Greg (committee member), Hoelting, Cory J. (committee member), Liang, Dong (committee member).
Subjects/Keywords: Seismic processing; Deghosting; Multiple removal; Seismic imaging; Seismic acquisition
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APA (6th Edition):
Zhang, Z. 1. (2017). Impact of the Topography of the Acquisition Surface on Preprocessing and Subsequent Free Surface Multiple Elimination and Depth Migration: Examining the Issue and Providing a Preprocessing Response That Accommodates a Variable Topography - Thereby Allowing Subsequent Multiple Removal and Imaging Methods to Deliver Their Promise and Potential. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/4800
Chicago Manual of Style (16th Edition):
Zhang, Zhen 1990-. “Impact of the Topography of the Acquisition Surface on Preprocessing and Subsequent Free Surface Multiple Elimination and Depth Migration: Examining the Issue and Providing a Preprocessing Response That Accommodates a Variable Topography - Thereby Allowing Subsequent Multiple Removal and Imaging Methods to Deliver Their Promise and Potential.” 2017. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/4800.
MLA Handbook (7th Edition):
Zhang, Zhen 1990-. “Impact of the Topography of the Acquisition Surface on Preprocessing and Subsequent Free Surface Multiple Elimination and Depth Migration: Examining the Issue and Providing a Preprocessing Response That Accommodates a Variable Topography - Thereby Allowing Subsequent Multiple Removal and Imaging Methods to Deliver Their Promise and Potential.” 2017. Web. 24 May 2020.
Vancouver:
Zhang Z1. Impact of the Topography of the Acquisition Surface on Preprocessing and Subsequent Free Surface Multiple Elimination and Depth Migration: Examining the Issue and Providing a Preprocessing Response That Accommodates a Variable Topography - Thereby Allowing Subsequent Multiple Removal and Imaging Methods to Deliver Their Promise and Potential. [Internet] [Doctoral dissertation]. University of Houston; 2017. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/4800.
Council of Science Editors:
Zhang Z1. Impact of the Topography of the Acquisition Surface on Preprocessing and Subsequent Free Surface Multiple Elimination and Depth Migration: Examining the Issue and Providing a Preprocessing Response That Accommodates a Variable Topography - Thereby Allowing Subsequent Multiple Removal and Imaging Methods to Deliver Their Promise and Potential. [Doctoral Dissertation]. University of Houston; 2017. Available from: http://hdl.handle.net/10657/4800
University of Houston
12.
Biediger, Dan 1974-.
Enhancing Multiple Sclerosis Lesion Segmentation in MRI Images.
Degree: MS, Computer Science, 2012, University of Houston
URL: http://hdl.handle.net/10657/560
► Multiple sclerosis (MS) is an autoimmune disease of the central nervous system that causes damage to the insulating myelin sheaths around the axons in the…
(more)
▼ Multiple sclerosis (MS) is an autoimmune disease of the central nervous system that causes damage to the insulating myelin sheaths around the axons in the brain. It affects over 2.5 million people world-wide. The disease progresses at different rates in different people and can have periods of remission and relapse. A fast and accurate method for evaluating the number and size of MS lesions in the brain is a key component in evaluating the progress of the disease and the efficacy of treatments. MS lesion segmentation usually requires the expertise of a trained physician. Manual segmentation is slow and difficult and the results can be somewhat subjective. While many automated methods exist, they do not provide sufficiently accurate segmentation results. There exists a need for a robust, fast, and accurate method for automatically segmenting MS lesions.
This thesis presents the results of an effort to improve the segmentation results of an existing system for lesion segmentation in MRI images. It includes two different strategies to improve the segmentation results by addressing opportunities missed in the existing approach. The first strategy leverages the current processing system at a granularity finer than the whole-brain to detect lesions at a local level. The existing system makes global estimates on the tissue intensities. Because these intensities vary across the brain, the global assumption provides inaccurate estimates in some cases. The first improvement combines a series of local results to produce a whole-brain lesion segmentation. This approach better captures the local lesion properties and produces encouraging results, with a general improvement in the detection rate of lesions. The second method looks at the individual voxel level and the local intensity neighborhood. As a post-processing method, it selects seed points from the results of the previous step. It uses a region growing method based on cellular automata to expand the lesion areas based on a local neighborhood similarity in intensity. While it provides some benefit, it is sensitive to initial conditions and the results depend on the implementation details.
Advisors/Committee Members: Shah, Shishir Kirit (advisor), Eick, Christoph F. (committee member), Collet, Christophe (committee member).
Subjects/Keywords: Multiple Sclerosis; MRI; Lesion; Segmentation; Grow-cut; Cellular automata; Computer science
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APA (6th Edition):
Biediger, D. 1. (2012). Enhancing Multiple Sclerosis Lesion Segmentation in MRI Images. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/560
Chicago Manual of Style (16th Edition):
Biediger, Dan 1974-. “Enhancing Multiple Sclerosis Lesion Segmentation in MRI Images.” 2012. Masters Thesis, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/560.
MLA Handbook (7th Edition):
Biediger, Dan 1974-. “Enhancing Multiple Sclerosis Lesion Segmentation in MRI Images.” 2012. Web. 24 May 2020.
Vancouver:
Biediger D1. Enhancing Multiple Sclerosis Lesion Segmentation in MRI Images. [Internet] [Masters thesis]. University of Houston; 2012. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/560.
Council of Science Editors:
Biediger D1. Enhancing Multiple Sclerosis Lesion Segmentation in MRI Images. [Masters Thesis]. University of Houston; 2012. Available from: http://hdl.handle.net/10657/560
University of Houston
13.
Jacob, Jack Deodato Ching 1977-.
CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS BY SUM FREQUENCY GENERATION SPECTROSCOPY AND IMAGING MICROSCOPY.
Degree: PhD, Chemistry, 2013, University of Houston
URL: http://hdl.handle.net/10657/1047
► This dissertation reports the characterization of self-assembled monolayers utilizing sum frequency generation (SFG) vibrational spectroscopy and imaging microscopy. Several variables were studied for their effect…
(more)
▼ This dissertation reports the characterization of self-assembled monolayers utilizing sum frequency generation (SFG) vibrational spectroscopy and imaging microscopy. Several variables were studied for their effect on the conformational order of the formed monolayers. In the analysis of octadecanoxy-phenylethanethiolate monolayers on gold, it was determined that the presence of an aromatic ring near the gold substrate caused no significant loss of the conformational order of the monolayer. Gauche and kink defects were observed by SFG spectroscopy, caused by the cross-sectional difference of the alkoxy chains and the aromatic ring, forcing the chains to tilt and kink until the methylene groups further above the chains can align to form the all-trans conformation. Additional octadecyl chains attached to the aromatic ring led to an increase in gauche defects, implying the decrease of conformational order is also due to steric effects. SFG imaging microscopy was used to determine the effect of the grain size of the gold substrate on the quality of monolayers produced. Analysis of the resulting images revealed that dodecanethiolate monolayers grown on surfaces with a large average grain size have fewer gauche defects within the alkyl chain assembly and thus are more conformationally ordered than those deposited on smaller-grained substrates. This variance between surfaces was not observed with octadecanethiolate monolayers, possibly due to the increased conformational ordering associated with their longer chain length enables the these thiolates to reduce any chain disordering induced by the grain size of the substrate. Finally, the in situ SFG spectroscopy was used to monitor self-assembled monolayers as they reductively desorb in alkaline solution.
Advisors/Committee Members: Lee, T. Randall (advisor), Baldelli, Steven (advisor), Kouri, Donald J. (committee member), Yang, Ding-Shyue (committee member), Stein, Gila E. (committee member).
Subjects/Keywords: Self-assembled monolayers (SAMs); SAMs; SFG spectroscopy; SFG imaging microscopy; Gold grain size; Reductive desorption; Phenyl thiols; Chemistry
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APA (6th Edition):
Jacob, J. D. C. 1. (2013). CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS BY SUM FREQUENCY GENERATION SPECTROSCOPY AND IMAGING MICROSCOPY. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1047
Chicago Manual of Style (16th Edition):
Jacob, Jack Deodato Ching 1977-. “CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS BY SUM FREQUENCY GENERATION SPECTROSCOPY AND IMAGING MICROSCOPY.” 2013. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1047.
MLA Handbook (7th Edition):
Jacob, Jack Deodato Ching 1977-. “CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS BY SUM FREQUENCY GENERATION SPECTROSCOPY AND IMAGING MICROSCOPY.” 2013. Web. 24 May 2020.
Vancouver:
Jacob JDC1. CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS BY SUM FREQUENCY GENERATION SPECTROSCOPY AND IMAGING MICROSCOPY. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1047.
Council of Science Editors:
Jacob JDC1. CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS BY SUM FREQUENCY GENERATION SPECTROSCOPY AND IMAGING MICROSCOPY. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/1047
University of Houston
14.
Udoetuk, Mayen.
Success in Science: The Effects of Recitations on University Stem Courses.
Degree: EdD, Professional Leadership, 2016, University of Houston
URL: http://hdl.handle.net/10657/5433
► The disparity of trained STEM workers has prompted the investigation of academic support in science, technology, engineering, and math (STEM) along many points in the…
(more)
▼ The disparity of trained STEM workers has prompted the investigation of academic support in science, technology, engineering, and math (STEM) along many points in the educational pipeline. National emphasis has been placed on strengthening the success of undergraduate students who pursue majors and careers in STEM with a focus on increasing the STEM workforce. There is a growing body of evidence that supports recitations as an instructional intervention in undergraduate STEM courses. Survey research was used in this study to gain a better understanding of the effects of recitations, as well as student perceptions of the recitations, to help inform the future structure and implementation of this type of instructional intervention for demographically diverse undergraduate students in gateway STEM courses at a Tier 1 urban
university. Findings from this study indicate that recitation perceptions and effects vary among participants in different STEM subjects. Additionally, recitation leader interaction can influence recitation perceptions. A key feature in recitation implementation is small class size. Future work can expand on knowledge of additional STEM course subjects and gender.
Advisors/Committee Members: Hawkins, Jacqueline (advisor), Santi, Kristi L. (committee member), Reyes, Augustina H. (committee member), Hassett, Kristen S. (committee member).
Subjects/Keywords: STEM; Recitation; Instructional intervention
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APA (6th Edition):
Udoetuk, M. (2016). Success in Science: The Effects of Recitations on University Stem Courses. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/5433
Chicago Manual of Style (16th Edition):
Udoetuk, Mayen. “Success in Science: The Effects of Recitations on University Stem Courses.” 2016. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/5433.
MLA Handbook (7th Edition):
Udoetuk, Mayen. “Success in Science: The Effects of Recitations on University Stem Courses.” 2016. Web. 24 May 2020.
Vancouver:
Udoetuk M. Success in Science: The Effects of Recitations on University Stem Courses. [Internet] [Doctoral dissertation]. University of Houston; 2016. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/5433.
Council of Science Editors:
Udoetuk M. Success in Science: The Effects of Recitations on University Stem Courses. [Doctoral Dissertation]. University of Houston; 2016. Available from: http://hdl.handle.net/10657/5433
University of Houston
15.
-7553-7724.
Fluvial Architecture and Paleohydraulic Analysis of Ancient River Deposits in Plan-view and 2-D Vertical Outcrops of the Turonian Ferron Notom Delta, Utah: From Allogenic Valleys to Autogenic Bars.
Degree: PhD, Geology, 2015, University of Houston
URL: http://hdl.handle.net/10657/1989
► This study documents the facies architecture of large valley-scale, intermediate bar-scale, and small bed-scale fluvial elements in a compound incised-valley fill in the Cretaceous Ferron…
(more)
▼ This study documents the facies architecture of large valley-scale, intermediate bar-scale, and small bed-scale fluvial elements in a compound incised-valley fill in the Cretaceous Ferron Notom Delta in southeastern Utah, U.S.A. The results are based on aerial LiDAR surveys, 24 measured sections, photomosaics, and 1800 paleocurrent measurements based on both plan-view and cliff exposures of exhumed meander belts within a compound valley-system. Cross-sectional observations from outcrops and comparisons with modern rivers reveal that autogenic confluence scours have diagnostic fill facies composed of single set of large steep foresets, and produces a single-story body in which a fifth-order scour is filled with unit-bar foresets, which in turn are overlain by a fourth-order surface capped by compound-bar deposits.
Although the downstream persistence of fluvial sandy facies along the entire stretch of the incised valley suggests a greater upstream control, it could not entirely erase the imprint of downstream sea-level rise as indicated by the “backwater effect”. The backwater transition is observed in fluvial deposits at the most downstream location and is marked by thickening of channel belt deposits tied to channel deepening towards the river mouth, reduction in average channel belt width related to a reduced rate of lateral migration, increased proportion of finer grains in channel belt deposits tied to reduced bed material flux, and a vertical translation from fluvial to tidal facies in the valley deposits. Findings from this study support the idea that the backwater zone is a fundamental transition in coastal rivers, across which preserved sedimentary bodies display predictable geometric changes that can be observed in ancient fluvial systems. Paleogeographic reconstructions of the meander plain from plan-view data in the upper part of the valley fill show the evolution of three channel belts formed by successive phases of dominantly lateral expansion. Three types of architectural facies or macroforms were identified in the point bars in the channel belts. They are classified as – Type A or small-scale macroforms, the amalgamation of which produce large-scale compound bars; Type B macroforms, which are interpreted as unit bars; and Type C macroforms, which consists of large, steeply dipping upper flow regime (UFR) planar beds. Plan-view bedding architectural analysis, therefore, can be a useful method to identify various fluvial macroforms.
Advisors/Committee Members: Saylor, Joel E. (committee member), Dupré, William R. (committee member), Evans, Ian (committee member), Bhattacharya, Janok P. (committee member).
Subjects/Keywords: Allogenic vs. Autogenic; Confluence scour; Cretaceous Incised Valley; Backwater Effect; Paleo-valley Slope; Plan-view fluvial style; Fluvial architecture; Fluvial systems; Paleo-hydraulics
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APA (6th Edition):
-7553-7724. (2015). Fluvial Architecture and Paleohydraulic Analysis of Ancient River Deposits in Plan-view and 2-D Vertical Outcrops of the Turonian Ferron Notom Delta, Utah: From Allogenic Valleys to Autogenic Bars. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1989
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-7553-7724. “Fluvial Architecture and Paleohydraulic Analysis of Ancient River Deposits in Plan-view and 2-D Vertical Outcrops of the Turonian Ferron Notom Delta, Utah: From Allogenic Valleys to Autogenic Bars.” 2015. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1989.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-7553-7724. “Fluvial Architecture and Paleohydraulic Analysis of Ancient River Deposits in Plan-view and 2-D Vertical Outcrops of the Turonian Ferron Notom Delta, Utah: From Allogenic Valleys to Autogenic Bars.” 2015. Web. 24 May 2020.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-7553-7724. Fluvial Architecture and Paleohydraulic Analysis of Ancient River Deposits in Plan-view and 2-D Vertical Outcrops of the Turonian Ferron Notom Delta, Utah: From Allogenic Valleys to Autogenic Bars. [Internet] [Doctoral dissertation]. University of Houston; 2015. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1989.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-7553-7724. Fluvial Architecture and Paleohydraulic Analysis of Ancient River Deposits in Plan-view and 2-D Vertical Outcrops of the Turonian Ferron Notom Delta, Utah: From Allogenic Valleys to Autogenic Bars. [Doctoral Dissertation]. University of Houston; 2015. Available from: http://hdl.handle.net/10657/1989
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
University of Houston
16.
Camacho Carrera, Zuralmy Andrea 1991-.
Use of Fractional-Matching-Pursuit Decomposition for Log-Properties Prediction.
Degree: MS, Geophysics, 2017, University of Houston
URL: http://hdl.handle.net/10657/4569
► Seismic prediction of rock properties from seismic attributes using multiple regression is equivalent to projecting bases functions onto the observed rock-properties; a process that is…
(more)
▼ Seismic prediction of rock properties from seismic attributes using multiple regression is equivalent to projecting bases functions onto the observed rock-properties; a process that is equivalent to Matching-Pursuit Decomposition. Matching Pursuit is a greedy algorithm that becomes unstable when the bases functions are highly correlated to each other. In this thesis, I investigate the use of Fractional-Matching-Pursuit to stabilize the prediction of rock properties from correlated seismic-attributes and demonstrate the efficacy of the method on an oil field in the Permian Basin.
Fractional-Matching-Pursuit Decomposition, as employed here, uses a seismic-attribute dictionary to decompose measured well-logs into a summation of seismic attributes - assigning fractional coefficients to selected attributes from the dictionary - and predicts the desired reservoir-property as the sum of the attributes after weighting by the fractional coefficients. For any iteration step, the algorithm subtracts only a fraction of the variance of the input data that can be correlated to any particular attribute. Thus, small changes in the seismic data do not produce large changes in the attributes used, and the resulting predictions are stabilized.
The procedure was applied to a dataset from the Indian Canyon Ranch in the Permian Basin to predict neutron-porosity, gamma-ray, and impedance logs. These predictions were compared to the input well logs with error of estimation in validation wells used as the measurement of success of this experimental methodology. Fractional-Matching-Pursuit predictions were compared to Matching-Pursuit predictions for several log properties and consistently were better. The process is sensitive to the frequency content in the logs, and appeared to be able to exceed the resolution limits of the seismic data, thereby predicting thin layers below the resolution of the original seismic-data.
Advisors/Committee Members: Castagna, John P. (advisor), Chesnokov, Evgeni M. (committee member), Regueiro, Jose (committee member).
Subjects/Keywords: Fractional-Matching-Pursuit Decomposition (FMPD)
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APA (6th Edition):
Camacho Carrera, Z. A. 1. (2017). Use of Fractional-Matching-Pursuit Decomposition for Log-Properties Prediction. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/4569
Chicago Manual of Style (16th Edition):
Camacho Carrera, Zuralmy Andrea 1991-. “Use of Fractional-Matching-Pursuit Decomposition for Log-Properties Prediction.” 2017. Masters Thesis, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/4569.
MLA Handbook (7th Edition):
Camacho Carrera, Zuralmy Andrea 1991-. “Use of Fractional-Matching-Pursuit Decomposition for Log-Properties Prediction.” 2017. Web. 24 May 2020.
Vancouver:
Camacho Carrera ZA1. Use of Fractional-Matching-Pursuit Decomposition for Log-Properties Prediction. [Internet] [Masters thesis]. University of Houston; 2017. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/4569.
Council of Science Editors:
Camacho Carrera ZA1. Use of Fractional-Matching-Pursuit Decomposition for Log-Properties Prediction. [Masters Thesis]. University of Houston; 2017. Available from: http://hdl.handle.net/10657/4569
University of Houston
17.
Chen, Lijian 1990-.
Studies on Scaling of Stochastic Processes and Locomotion of Drosophila.
Degree: PhD, Physics, 2017, University of Houston
URL: http://hdl.handle.net/10657/4530
► This dissertation presents two projects on stochastic processes. The simplest stochastic processes are sums of identical and independent increments with finite variance. The central limit…
(more)
▼ This dissertation presents two projects on stochastic processes. The simplest stochastic processes are sums of identical and independent increments with finite variance. The central limit theorem states that the sum of N such increments is normally distributed with variance proportional to N^(1/2); i.e., the distribution scales as N^(1/2). This type of scaling is referred to a "normal". In general, the requirements of the central limit theorem are not always satisfied. One signature of such "anomalous" processes is that the distribution of the sum of N increments scales like N^H, where H != 1/2 is known as the Hurst exponent. In the first part of the dissertation, we identify possible origins of anomalous scaling. The class of processes that have been studied previously have "stationary increments", i.e., the distribution of their increments do not change with time. Anomalous scaling in stationary increments processes is known to originate through either auto-correlations, the Joseph effect, or the infinite variance of increments, the Noah effect. Here, we consider the possibility of non-stationary increments. In particular, scaling of the variance of increments with time can also produce anomalous scaling, a mechanism we refer to as the Moses effect. Scaling exponents quantifying the three effects are defined and related to the Hurst exponent. Methods of time series analysis that enable accurate independent measurement of each exponent are presented. They are applied to various processes to illustrate the role of each effect and how they combine to produce H !=1/2. Analyses of intraday financial time series data reveal that the anomalous scaling is due only to the Moses effect. For financial market data, we reiterate that the Joseph exponent, not the Hurst exponent, is the appropriate measure to test the Efficient-Market Hypothesis. The second part consists of a study of animal locomotion, which is random and needs to be assessed through stochastic analysis. We examine the effects from predators to the exploratory activity of Drosophila. Our analysis indicates that Drosophila use visual cues to habituate and detect predators. We also find that Drosophila respond to predators by increasing exploration rather than suppressing their activity.
Advisors/Committee Members: Gunaratne, Gemunu H. (advisor), Bassler, Kevin E. (committee member), McCauley, Joseph L. (committee member), Wood, Lowell T. (committee member), Timofeyev, Ilya (committee member).
Subjects/Keywords: Stochastic processes; Scaling; Non-stationary increments
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APA (6th Edition):
Chen, L. 1. (2017). Studies on Scaling of Stochastic Processes and Locomotion of Drosophila. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/4530
Chicago Manual of Style (16th Edition):
Chen, Lijian 1990-. “Studies on Scaling of Stochastic Processes and Locomotion of Drosophila.” 2017. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/4530.
MLA Handbook (7th Edition):
Chen, Lijian 1990-. “Studies on Scaling of Stochastic Processes and Locomotion of Drosophila.” 2017. Web. 24 May 2020.
Vancouver:
Chen L1. Studies on Scaling of Stochastic Processes and Locomotion of Drosophila. [Internet] [Doctoral dissertation]. University of Houston; 2017. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/4530.
Council of Science Editors:
Chen L1. Studies on Scaling of Stochastic Processes and Locomotion of Drosophila. [Doctoral Dissertation]. University of Houston; 2017. Available from: http://hdl.handle.net/10657/4530
University of Houston
18.
-4932-894X.
Uniqueness Results of Algebraic Curves and Related Topics.
Degree: PhD, Mathematics, 2017, University of Houston
URL: http://hdl.handle.net/10657/1866
► It is well-known that if two complex polynomials P and Q share two values without counting multiplicities, then they are the same. Such problem is…
(more)
▼ It is well-known that if two complex polynomials P and Q share two values without counting multiplicities, then they are the same. Such problem is called the value sharing problem. In this dissertation, we study the value sharing problem for algebraic and holomorphic curves, as well as give its applications. We first improve the previous result of Ru-Xu on value sharing for algebraic mappings from a compact Riemann surface into the n-dimensional projective space that agree on the pre-image for given hyperplanes located in general position, by using a new auxiliary function. Second, we study the value sharing problem for holomorphic mappings from punctured compact Riemann surfaces into the n-dimensional projective space. We also work on p-adic holomorphic curves which is similar to the algebraic curves. In the last chapter, we apply our results to the study of minimal surfaces, namely, the uniqueness theorem for Gauss maps of two minimal surfaces in the n-dimensional Euclidean space. The article which contains the majority results of this thesis has been accepted by the International Journal of Mathematics.
Advisors/Committee Members: Ru, Min (advisor), Heier, Gordon (committee member), Ji, Shanyu (committee member), Feng, Qianmei (committee member).
Subjects/Keywords: Uniqueness theorems; Second Main Theorem; Nevanlinna theory; Algebraic curves; Holomorphic curves; Gauss maps; Minimal surfaces
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APA (6th Edition):
-4932-894X. (2017). Uniqueness Results of Algebraic Curves and Related Topics. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1866
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-4932-894X. “Uniqueness Results of Algebraic Curves and Related Topics.” 2017. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1866.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-4932-894X. “Uniqueness Results of Algebraic Curves and Related Topics.” 2017. Web. 24 May 2020.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-4932-894X. Uniqueness Results of Algebraic Curves and Related Topics. [Internet] [Doctoral dissertation]. University of Houston; 2017. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1866.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-4932-894X. Uniqueness Results of Algebraic Curves and Related Topics. [Doctoral Dissertation]. University of Houston; 2017. Available from: http://hdl.handle.net/10657/1866
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
University of Houston
19.
Rivas, Mauricio Alexander 1984-.
Unconstrained Variational Principles and Morse Indices for Linear Elliptic Eigenproblems.
Degree: PhD, Mathematics, 2013, University of Houston
URL: http://hdl.handle.net/10657/1198
► Variational principles for finding eigenvalues, and associated eigenvectors, for symmetric matrices and compact self-adjoint linear operators have been studied by many authors for some time…
(more)
▼ Variational principles for finding eigenvalues, and associated eigenvectors, for symmetric matrices and compact self-adjoint linear operators have been studied by many authors for some time now. Here we shall introduce and study unconstrained variational principles for the eigenproblem of a pair of bilinear forms (a, m) on a Hilbert space. Each functional in the one-parameter family of functionals has well-defined first and second variations.
First variations characterize the critical points as eigenvectors of (a, m) with associated eigenvalues given by specific formulae. Properties of the set of critical points, that depend on the parameter value of the family of functionals, are given and summarized by a bifurcation diagram. Second variations enable a Morse index theory that characterizes the critical point as being associated with the j-th eigenvalue.
The framework is quite general, but the assumption on (a, m) are appropriate for the study of second-order divergence form elliptic problems in Hilbert-Sobolev spaces, including problems with non-zero boundary data and indefinite weights. These problems include Robin, Steklov and general eigenvalue problems.
Advisors/Committee Members: Auchmuty, Giles (advisor), Ott, William (committee member), Gorb, Yuliya (committee member), Hardt, Robert (committee member).
Subjects/Keywords: Unconstrained variational principles; Bilinear forms; Morse index; Steklov Eigenproblems
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APA (6th Edition):
Rivas, M. A. 1. (2013). Unconstrained Variational Principles and Morse Indices for Linear Elliptic Eigenproblems. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1198
Chicago Manual of Style (16th Edition):
Rivas, Mauricio Alexander 1984-. “Unconstrained Variational Principles and Morse Indices for Linear Elliptic Eigenproblems.” 2013. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1198.
MLA Handbook (7th Edition):
Rivas, Mauricio Alexander 1984-. “Unconstrained Variational Principles and Morse Indices for Linear Elliptic Eigenproblems.” 2013. Web. 24 May 2020.
Vancouver:
Rivas MA1. Unconstrained Variational Principles and Morse Indices for Linear Elliptic Eigenproblems. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1198.
Council of Science Editors:
Rivas MA1. Unconstrained Variational Principles and Morse Indices for Linear Elliptic Eigenproblems. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/1198
University of Houston
20.
-6246-2532.
Their Exits and Their Entrances: Stories of Coming and Going from For.
Degree: PhD, Curriculum and Instruction, 2016, University of Houston
URL: http://hdl.handle.net/10657/4859
► This dissertation is a collection of related papers anchored by a narrative inquiry with three former teacher educators in the field. The work explores and…
(more)
▼ This dissertation is a collection of related papers anchored by a narrative inquiry with three former teacher educators in the field. The work explores and maps the educators’ career trajectories within, and across their stories of experience. All participants resigned from their posts in public education within the three years preceding the interviews and exited the field from a public school system in one of the most diverse urban metroplex areas in the United States. The collected ‘stories to leave by’ reveal resonances rooted in the areas of place, community, and identity.
The work begins by addressing the lack of literature surrounding the life-cycles of teacher educators in the field and the researcher’s personal experiences and intrigue with the topic, and presents a literary epilogue which contextualizes the structure of the subsequent chapters. Elements from the epilogue are investigated in a scholarly literature review which includes narrative identity, narrative therapy (Adams, Josselson & Lieblich, 2006; Combs & Freedman, 2012; Phipps & Vorster, 2015), and narrative inquiry (Clandinin & Connelly, 2000; Conle, 1996; Craig, 2013, 2014)
This paper-based dissertation presents interpreted truths in the “thick” and “thin” participant stories of coming, going and staying in the field. Through narrative interspersion, the researcher presents multiple truths and selves authored by the participants (Akkerman & Meijer, 2011; Polanco, 2011; Clandinin, 2013a, 2013b; Phipps & Vorster, 2015). The dissertation research ends with the researcher’s reflections on her own journey of re-storied experiences, wonderings, and tensions met and wrestled with during the stages of data collection and interpretation.
Advisors/Committee Members: Craig, Cheryl J. (advisor), White, Cameron S. (committee member), Mountain, Mignonette (committee member), McDonald, Denise (committee member).
Subjects/Keywords: Narrative inquiry; Teachers; Attrition
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APA (6th Edition):
-6246-2532. (2016). Their Exits and Their Entrances: Stories of Coming and Going from For. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/4859
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-6246-2532. “Their Exits and Their Entrances: Stories of Coming and Going from For.” 2016. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/4859.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-6246-2532. “Their Exits and Their Entrances: Stories of Coming and Going from For.” 2016. Web. 24 May 2020.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-6246-2532. Their Exits and Their Entrances: Stories of Coming and Going from For. [Internet] [Doctoral dissertation]. University of Houston; 2016. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/4859.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-6246-2532. Their Exits and Their Entrances: Stories of Coming and Going from For. [Doctoral Dissertation]. University of Houston; 2016. Available from: http://hdl.handle.net/10657/4859
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
University of Houston
21.
Paek, Seonghee 1979-.
Structural studies of Campylobacter jejuni: Virulence proteins (Cj0977 and JlpA) and novel lipoproteins.
Degree: PhD, Biochemistry, 2013, University of Houston
URL: http://hdl.handle.net/10657/3290
► Campylobacter jejuni is a major cause of human gastroenteritis worldwide; however, its pathogenesis is not understood well. Cj0977, a cytoplasmic protein regulated by the flagellar…
(more)
▼ Campylobacter jejuni is a major cause of human gastroenteritis worldwide; however, its pathogenesis is not understood well. Cj0977, a cytoplasmic protein regulated by the flagellar promoter s28, and JlpA, a cell-surface exposed lipoprotein adhesin, are virulence factors, but their contributions in pathogenesis of C. jejuni remains elusive. Since there is no clue for these two protein structures, we aimed to discover structure-function relationship of these proteins. My work focused on establishing expression system, purification method, and crystallization method of these proteins, leading up to obtaining high quality crystals for successful X-ray diffraction.
Several techniques were employed to yield diffracting crystals: limited proteolysis and stability test for Cj0977 and introduction of two additional Met sites within the JlpA sequence. Here we present the first view of the crystal structures of Cj0977 and JlpA. Cj0977 adopts a ‘hot dog’ fold, a famous protein folds found in numerous CoA derivative binding enzymes. The Cj0977 structure suggests its possible function as an acyl-CoA binding regulatory protein. The JlpA structure reveals a novel fold of unclosed half β-barrel and is reminiscent of other bacterial lipoproteins. The JlpA structure suggests that JlpA may accommodate multiple ligands and that a similar role for JlpA as a carrier of as yet unidentified Campylobacter-specific lipids. The unique fold of JlpA led us to initiate other C. jejuni lipoprotein study.
Most of C. jejuni lipoproteins are unknown due to no apparent sequence homology in the sequence databank; however, they are considered to contribute to the pathogenesis. We aimed to uncover the crystal structures of C. jejuni lipoproteins to provide framework for investigating their functions. My work focused on four lipoproteins: Cj0090, Cj1026c, Cj1090c, and Cj1649. Among these, the Cj0090 structure reveals a novel variant of the immunoglobulin fold with β-sandwich architecture, suggesting that Cj0090 may be involved in protein-protein interactions, consistent with a possible role for bacterial lipoproteins. In addition, a phage display technique was performed to identify ligands for our target lipoproteins.
The crystal structures revealed in this study contribute to provide clues for possible roles of our target proteins and enable to perform further structure-based functional analyses.
Advisors/Committee Members: Yeo, Hye-Jeong (advisor), Delcour, Anne (committee member), Cai, Chengzhi (committee member), Eichberg, Joseph (committee member).
Subjects/Keywords: Campylobacter jejuni; Virulence; JlpA; Cj0977; Cj0090; Cj1026c; Cj1090c; Cj1649; Limited proteolysis; Purification; Crystallization; Crystal structures; Hot dog fold; Unclosed half β-barrel; Immunoglobulin fold; Immunology; Bacterial lipoproteins; Phage display; Phage ELISA
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APA (6th Edition):
Paek, S. 1. (2013). Structural studies of Campylobacter jejuni: Virulence proteins (Cj0977 and JlpA) and novel lipoproteins. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/3290
Chicago Manual of Style (16th Edition):
Paek, Seonghee 1979-. “Structural studies of Campylobacter jejuni: Virulence proteins (Cj0977 and JlpA) and novel lipoproteins.” 2013. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/3290.
MLA Handbook (7th Edition):
Paek, Seonghee 1979-. “Structural studies of Campylobacter jejuni: Virulence proteins (Cj0977 and JlpA) and novel lipoproteins.” 2013. Web. 24 May 2020.
Vancouver:
Paek S1. Structural studies of Campylobacter jejuni: Virulence proteins (Cj0977 and JlpA) and novel lipoproteins. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/3290.
Council of Science Editors:
Paek S1. Structural studies of Campylobacter jejuni: Virulence proteins (Cj0977 and JlpA) and novel lipoproteins. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/3290
University of Houston
22.
Makinde, Ibukun G.
Production Forecasting in Shale Volatile Oil Reservoirs.
Degree: MS, Chemical Engineering, 2014, University of Houston
URL: http://hdl.handle.net/10657/1402
► This thesis gives us a better understanding of the behavior of shale volatile oil reservoirs. The effects of fluid compositions as well as the sensitivity…
(more)
▼ This thesis gives us a better understanding of the behavior of shale volatile oil reservoirs. The effects of fluid compositions as well as the sensitivity of certain variables on cumulative oil production and rates were analyzed using black-oil and compositional simulations. Two-phase (oil and gas) black-oil simulations gave better results than single-phase (oil) black-oil simulations. Compositional simulations were much better in comparison to two-phase black-oil simulations. Therefore, for thorough analysis of fluid composition effects and more accurate production forecasts (especially for reservoir fluids like volatile oils in shale formations), compositional simulations are necessary.
In this research, single-phase and two-phase black-oil simulations were run on a base case model and the results were compared. Sensitivity studies were carried out by varying certain parameters in the base case model, then single-phase and two-phase black-oil simulations were run and the results were compared to the base case model. This was followed by analyzing six different fluid samples through compositional simulations. Flash calculations were later done on the fluid samples to obtain inputs for two-phase black-oil simulations. Finally, the simulation results from the compositional and two-phase black-oil simulations were then compared.
The importance of shale oil and gas research cannot be over-emphasized, given the ever-rising global demand for energy. Research and studies like this, can lead to better well completions and design, improve reservoir management and economics as well as provide insight into potential alternative methods to enhance recovery from unconventional shale formations.
Advisors/Committee Members: Lee, W. John (advisor), Qin, Guan (committee member), Stewart, Robert R. (committee member).
Subjects/Keywords: Shales; Volatile oils; Reservoirs; Production forecasting
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APA (6th Edition):
Makinde, I. G. (2014). Production Forecasting in Shale Volatile Oil Reservoirs. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/1402
Chicago Manual of Style (16th Edition):
Makinde, Ibukun G. “Production Forecasting in Shale Volatile Oil Reservoirs.” 2014. Masters Thesis, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1402.
MLA Handbook (7th Edition):
Makinde, Ibukun G. “Production Forecasting in Shale Volatile Oil Reservoirs.” 2014. Web. 24 May 2020.
Vancouver:
Makinde IG. Production Forecasting in Shale Volatile Oil Reservoirs. [Internet] [Masters thesis]. University of Houston; 2014. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1402.
Council of Science Editors:
Makinde IG. Production Forecasting in Shale Volatile Oil Reservoirs. [Masters Thesis]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/1402
University of Houston
23.
Nguyen, Luan Chan 1988-.
Rigid and Non-rigid Plate Reconstruction of the East Africa and Antarctic Continental Margins.
Degree: MS, Geophysics, 2015, University of Houston
URL: http://hdl.handle.net/10657/1813
► The Early Jurassic separation of Antarctica from Africa plays an important role in our understanding of the dispersal of the Gondwana supercontinent. Previously proposed reconstruction…
(more)
▼ The Early Jurassic separation of Antarctica from Africa plays an important role in our understanding of the dispersal of the Gondwana supercontinent. Previously proposed reconstruction models often contain overlaps and gaps in the restored margins that reflect difficulties in accurately delineating the continent-ocean boundary (COB) and determining the amount and distribution of extended continental crust. This study focuses on the evolution of the African margin adjacent to the Mozambique Basin and the conjugate margin of Antarctica near the Riiser Larsen Sea. A complete break-up history involving both seafloor spreading and continental rifting has been investigated.
New satellite-derived gravity data have been used to trace the orientations and landward limits of fracture zones in the study area. A 3-D gravity inversion has produced a crustal thickness model that reliably quantifies the extent and amount of stretched crust. Information on crustal thickness along with the identification of magnetic isochrons reveal COBs that are located significantly closer to the coasts of Africa and Antarctica than previously recognized. Correlation of both fracture zone azimuths and magnetic isochrons in addition to the identified COBs over the conjugate margins suggest Antarctica began drifting away from Africa at approximately 171 Ma in a roughly SSE direction. Of several scenarios examined to determine the crustal character of the Beira High, the preferred model assigns it an oceanic origin and suggests that it may be a conjugate feature of the southern Astrid Ridge in Antarctica.
An areal balancing method that involves restoring the crust to a uniform pre-rift thickness has been used to perform the non-rigid reconstruction. This restoration has been carried out for both a non-volcanic and volcanic margin with magmatic underplating. Based upon the results, Africa underwent extension of 65-105 km while Antarctic crust was stretched by 90-190 km. Both margins reveal a trend of increasing extension from east to west. Various models tested to determine the direction of extension during rifting suggest that Antarctica underwent a counter-clockwise rotation with respect to Africa during the period between 186-171 Ma.
Advisors/Committee Members: Hall, Stuart A. (advisor), Bird, Dale (committee member), Ball, Philip J. (committee member), Sager, William W. (committee member).
Subjects/Keywords: Reconstruction; Gondwana; Gravity inversion; Magnetic isochrons; Volcanic margins; Fracture zones
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APA (6th Edition):
Nguyen, L. C. 1. (2015). Rigid and Non-rigid Plate Reconstruction of the East Africa and Antarctic Continental Margins. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/1813
Chicago Manual of Style (16th Edition):
Nguyen, Luan Chan 1988-. “Rigid and Non-rigid Plate Reconstruction of the East Africa and Antarctic Continental Margins.” 2015. Masters Thesis, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1813.
MLA Handbook (7th Edition):
Nguyen, Luan Chan 1988-. “Rigid and Non-rigid Plate Reconstruction of the East Africa and Antarctic Continental Margins.” 2015. Web. 24 May 2020.
Vancouver:
Nguyen LC1. Rigid and Non-rigid Plate Reconstruction of the East Africa and Antarctic Continental Margins. [Internet] [Masters thesis]. University of Houston; 2015. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1813.
Council of Science Editors:
Nguyen LC1. Rigid and Non-rigid Plate Reconstruction of the East Africa and Antarctic Continental Margins. [Masters Thesis]. University of Houston; 2015. Available from: http://hdl.handle.net/10657/1813
University of Houston
24.
Akerson, Adam 1978-.
Survey of In-Service Early Childhood Educators' Knowledge, Skills, and Confidence in Teaching Spatial Skills to Young Children.
Degree: EdD, Curriculum and Instruction, 2011, University of Houston
URL: http://hdl.handle.net/10657/579
► Spatial abilities have been linked to mathematics achievement, in addition to science achievement and creativity in the arts (Clements & Sarama, 2007; Shepard, 1978; West,…
(more)
▼ Spatial abilities have been linked to mathematics achievement, in addition to science achievement and creativity in the arts (Clements & Sarama, 2007; Shepard, 1978; West, 1991; Wheatley, 1999). Even though the importance of spatial abilities has been recognized, the percentage of preschool teachers who report teaching spatial abilities either through lessons or free exploration is a mere 32 percent (Sarama & DiBiase, 2004), which may lead some to question the qualifications of early childcare teachers. The educational requirements of early childcare teachers varies within states, for programs located in different settings or subject to different regu¬lations, with the result that many practitioners do not hold college degrees, and most are not certified (Whitebook et. al., 2009). Developing the knowledge, skills, and abilities to provide high-quality mathematics education can prove difficult with such a variation in teacher requirements from program to program and state to state.
The purpose of this research study was to examine in-service early childcare teachers’ knowledge, methods, and confidence concerning spatial skills development in their classrooms. The participants included 88 in-service early childhood educators who are currently teaching in a preschool or early childcare center. Archival data that were previously collected utilizing the survey instrument, Spatial Abilities Survey for In-Service Teachers, was utilized in this study.
The results of the chi-square and ANOVA analyses revealed a statistically significant relationship between in-service early childhood educators’ level of education and their knowledge and skills associated with spatial abilities. Furthermore, a statistically significant relationship exists between the setting in which early childhood educators’ taught and their knowledge and skills associated with spatial abilities.
With less than desireable performance in the areas of mathematics and science becoming evident through national assessments as early as 4th grade (NCES, 2009), it is essential that our students be afforded a high-quality education as early as preschool, in order to provide a foundation for future success in these areas. A high-quality education starts with the early childhood educator and the knowledge and skills he/she brings to the classroom.
Advisors/Committee Members: Andrews, Nicole L. (advisor), Burridge, Andrea Backscheider (committee member), Wilson, Jahnette (committee member), Edgar, Teresa (committee member).
Subjects/Keywords: Preschool; Knowledge; Skills; Confidence; Surveys; Early childhood education; Early childhood teachers – In-service training; Space perception in children – Study and teaching
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APA (6th Edition):
Akerson, A. 1. (2011). Survey of In-Service Early Childhood Educators' Knowledge, Skills, and Confidence in Teaching Spatial Skills to Young Children. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/579
Chicago Manual of Style (16th Edition):
Akerson, Adam 1978-. “Survey of In-Service Early Childhood Educators' Knowledge, Skills, and Confidence in Teaching Spatial Skills to Young Children.” 2011. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/579.
MLA Handbook (7th Edition):
Akerson, Adam 1978-. “Survey of In-Service Early Childhood Educators' Knowledge, Skills, and Confidence in Teaching Spatial Skills to Young Children.” 2011. Web. 24 May 2020.
Vancouver:
Akerson A1. Survey of In-Service Early Childhood Educators' Knowledge, Skills, and Confidence in Teaching Spatial Skills to Young Children. [Internet] [Doctoral dissertation]. University of Houston; 2011. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/579.
Council of Science Editors:
Akerson A1. Survey of In-Service Early Childhood Educators' Knowledge, Skills, and Confidence in Teaching Spatial Skills to Young Children. [Doctoral Dissertation]. University of Houston; 2011. Available from: http://hdl.handle.net/10657/579
University of Houston
25.
Gomez, Gloria E. 1956-.
High Efficacy Bilingual/ELL Teachers' Perception of Effective Professional Development.
Degree: EdD, Educational Leadership, 2011, University of Houston
URL: http://hdl.handle.net/10657/493
► Few challenges facing America today are as vital as improving the educational attainment of low social economic and English Language Learners (language minority children). The…
(more)
▼ Few challenges facing America today are as vital as improving the educational attainment of low social economic and English Language Learners (language minority children). The United States’ educational reform has brought forth numerous initiatives throughout the past decades to address the “Achievement Gap” between Latino students and their Anglo counterparts. Even when the teachers in high-poverty schools have experience and credentials, they are generally inadequately prepared and supported to handle the enormous instructional challenges they face, challenges that would test the mettle of the most experienced and accomplished teachers.
The study explored high-efficacy bilingual/ English Language Learner teachers’ perceptions of what they consider to be relevant professional development that meets their essential needs. The research methodology used in this study consisted of rigorous qualitative, multisite ethnographic interviews and their analysis and synthesis. The study addressed the following two research questions: What are high-efficacy bilingual/ELL teachers’ perceptions of effective professional development? And what resources, means of delivery and organizational support at the school level do high-efficacy bilingual/ELL teachers’ perceive as promoting effective professional development?
This study was conducted in three phases using qualitative methods of ethnographic analysis of individual semi-structured interviews. Interviews provided multifaceted understanding of the impact that high-efficacy bilingual/ELL teacher’ perceptions on professional development have on their instructional effectiveness and challenges they face. The three sections include a description of the participants’ gleaned from the (TDQ) Teacher Demographic Questionnaires, a description of the archival district data, selection of the study participants and discussion of categories emerging from analysis of the interview data.
This study found differences and similarities among the bilingual campuses in learning, practice, supportive school cultures and sustainability of school practices. Study participants disclosed the lack of adequate educational programs, instruction, resources, unfair assessment, and exclusion of parents and community within school district. Consistent with social, racial, ethnic or linguistic research, this study’s participants disclose that English language learners in transitional bilingual campuses are isolated on three campuses. Furthermore, the study results indicate that bilingual/ELL teachers’ lack of professional development specifically designed to target the needs of English.
In addition, this study revealed the extremely difficult challenges teachers face on a daily basis in addressing the needs of their bilingual/ELL students. Teachers had to contend with inadequate instructional material and resources as well as a lack of support. Consequently, bilingual/ELL teachers’ reported that they are left to fend for themselves. In conclusion, the study results revealed the need of specific…
Advisors/Committee Members: Holland, Patricia E. (advisor), Busch, Steven D. (committee member), Emerson, Michael W. (committee member), Téllez, Kip (committee member).
Subjects/Keywords: Bilingual education; Bilingual/ELL Teacher Professional Development; Multicultural education; Bilingual/ELL Teacher Self-Efficacy; English teachers – Vocational guidance; Education, Bilingual – Texas
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APA (6th Edition):
Gomez, G. E. 1. (2011). High Efficacy Bilingual/ELL Teachers' Perception of Effective Professional Development. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/493
Chicago Manual of Style (16th Edition):
Gomez, Gloria E 1956-. “High Efficacy Bilingual/ELL Teachers' Perception of Effective Professional Development.” 2011. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/493.
MLA Handbook (7th Edition):
Gomez, Gloria E 1956-. “High Efficacy Bilingual/ELL Teachers' Perception of Effective Professional Development.” 2011. Web. 24 May 2020.
Vancouver:
Gomez GE1. High Efficacy Bilingual/ELL Teachers' Perception of Effective Professional Development. [Internet] [Doctoral dissertation]. University of Houston; 2011. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/493.
Council of Science Editors:
Gomez GE1. High Efficacy Bilingual/ELL Teachers' Perception of Effective Professional Development. [Doctoral Dissertation]. University of Houston; 2011. Available from: http://hdl.handle.net/10657/493
University of Houston
26.
Patrick, Rhonda G.
Health, Wellness, and Quality of Life Satisfaction among Persons Receiving Medication-Assisted Treatment.
Degree: PhD, Social Work, 2018, University of Houston
URL: http://hdl.handle.net/10657/3087
► Purpose This study explores the health, wellness, and quality of life (QoL) of opiate-dependent individuals who are receiving medication-assisted treatment for opioid use disorder. The…
(more)
▼ Purpose
This study explores the health, wellness, and quality of life (QoL) of opiate-dependent individuals who are receiving medication-assisted treatment for opioid use disorder. The study assesses longitudinal improvement of QoL and the influence of demographic, psychosocial, drug, and health-related variables on individuals' QoL.
Methods
This is a quantitative longitudinal study of adult patients enrolled in two outpatient opioid treatment programs (OTP) located in Texas. The patients were receiving medication-assisted treatment for opioid use disorder. The study includes analysis of patient psychosocial and demographic information collected at the time of the patient’s initial enrollment in the program and analysis of QoL assessments collected from patients annually in 2013, 2015, 2016, and 2017.
Results
Although there were some small long-term changes in the six dimensions of the patients’ QoL, these changes appeared to have limited practical or clinical significance. Several psychosocial stressors, including anxiety, alcohol use, non-prescribed opioid use, being physically abused as a child, and childhood exposure to substance use had statistically significant effects on patient QoL, however, these effects appeared to have limited practical or clinical significance.
Conclusions
Ultimately, this study has revealed that individuals receiving medication-assisted treatment (MAT) for opioid use disorder need psychosocial supports throughout the entirety of their treatment, regardless of the length of the episode. A satisfactory QoL is mediated by psychological well-being. Consequently, a more holistic approach to MAT is recommended, which goes beyond pharmaceutical maintenance and medical care to include special attention for psychological complaints and trauma.
Advisors/Committee Members: Robbins, Susan P. (advisor), Rubin, Allen (committee member), Parrish, Danielle E. (committee member).
Subjects/Keywords: Medication Assisted Treatment; Quality of life
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APA (6th Edition):
Patrick, R. G. (2018). Health, Wellness, and Quality of Life Satisfaction among Persons Receiving Medication-Assisted Treatment. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/3087
Chicago Manual of Style (16th Edition):
Patrick, Rhonda G. “Health, Wellness, and Quality of Life Satisfaction among Persons Receiving Medication-Assisted Treatment.” 2018. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/3087.
MLA Handbook (7th Edition):
Patrick, Rhonda G. “Health, Wellness, and Quality of Life Satisfaction among Persons Receiving Medication-Assisted Treatment.” 2018. Web. 24 May 2020.
Vancouver:
Patrick RG. Health, Wellness, and Quality of Life Satisfaction among Persons Receiving Medication-Assisted Treatment. [Internet] [Doctoral dissertation]. University of Houston; 2018. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/3087.
Council of Science Editors:
Patrick RG. Health, Wellness, and Quality of Life Satisfaction among Persons Receiving Medication-Assisted Treatment. [Doctoral Dissertation]. University of Houston; 2018. Available from: http://hdl.handle.net/10657/3087
University of Houston
27.
Hartsoch, Glen 1968-.
A Study on the Development of a Professional Learning Community for a Medium-Sized High School Faculty.
Degree: EdD, Educational Leadership, 2012, University of Houston
URL: http://hdl.handle.net/10657/896
► Professional Learning Communities (PLCs) represent a concept that is growing in many parts of the United States. They are an attempt to create an environment…
(more)
▼ Professional Learning Communities (PLCs) represent a concept that is growing in many parts of the United States. They are an attempt to create an environment in which teachers feel comfortable working together, sharing, and growing as a community of educators. The goal is to improve student performance. This dissertation provides a narrative of a high school currently implementing a PLC on a faculty, which has not had much experience with such a concept. The principal of the school faces challenges as he works in good faith to implement what he believes as proven tactics to improve student performance. At the same time, surveys of the school under study have shown the faculty and other community stakeholders have lost faith in the ability of their school following initial introduction of overlaying PLCs. Teachers find themselves assigned to department and small learning community PLCs. The faculty is focused but unable to articulate their sense of focus in a mission statement and confused on expected expectations. Focus groups that included the entire faculty of the school describe communities of dedicated teachers that desire the conditions a PLC would afford them but remain confused and unsure as they enter into a “flattened” world in which they will need to take more ownership of their own practice at a time in which others are seeking to take control of that ownership as well.
Advisors/Committee Members: Holland, Patricia E. (advisor), Craig, Cheryl J. (committee member), Emerson, Michael W. (committee member), LeBlanc, Robert M. (committee member).
Subjects/Keywords: PLC; Faculty Development; Professionalism; Communities of Continuous Inquiry Focus Groups; Educational leadership
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APA (6th Edition):
Hartsoch, G. 1. (2012). A Study on the Development of a Professional Learning Community for a Medium-Sized High School Faculty. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/896
Chicago Manual of Style (16th Edition):
Hartsoch, Glen 1968-. “A Study on the Development of a Professional Learning Community for a Medium-Sized High School Faculty.” 2012. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/896.
MLA Handbook (7th Edition):
Hartsoch, Glen 1968-. “A Study on the Development of a Professional Learning Community for a Medium-Sized High School Faculty.” 2012. Web. 24 May 2020.
Vancouver:
Hartsoch G1. A Study on the Development of a Professional Learning Community for a Medium-Sized High School Faculty. [Internet] [Doctoral dissertation]. University of Houston; 2012. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/896.
Council of Science Editors:
Hartsoch G1. A Study on the Development of a Professional Learning Community for a Medium-Sized High School Faculty. [Doctoral Dissertation]. University of Houston; 2012. Available from: http://hdl.handle.net/10657/896
University of Houston
28.
Smith, Jacob B.L.
Trends and Cycles in Financial Markets: Essays in Time Series Econometrics.
Degree: PhD, Economics, 2016, University of Houston
URL: http://hdl.handle.net/10657/1529
► This dissertation is a collection of three essays applying modern time series techniques in the context of financial markets. There is a particular focus on…
(more)
▼ This dissertation is a collection of three essays applying modern time series techniques in the context of financial markets. There is a particular focus on disentangling persistent trend components from transitory cyclical dynamics. The information contained in these cyclical components is leveraged to garner insight into the broader macroeconomy.
The first essay, Trend and Cycle in the Yield Curve: A Procedure for Forecasting Recessions, utilizes short-term (slope) dynamics present in the yield curve to predict impending economic downturns. Building on a large body of literature chronicling the relationship between the shape of the yield curve and the business cycle I employ Dynamic Nelson-Siegel modeling to define the level, slope, and curvature characteristics of the term structure through time. Given these dynamics, the trend and cycle are extracted using various decomposition techniques. I show that cycles present within the slope factor are extremely robust predictors of recessions, correctly identifying recessions as much as eighteen months in advance. Moreover, I develop a ``Predictive Power Score'' as a way to quantify my procedure's performance. This score demonstrates the superiority of my procedure over other common leading indicators including the yield spread.
This first essay illustrates a common obstacle faced by researchers when attempting to measure cycles in real-time. Symmetric band-pass filters are estimated at the expense of data trimming, i. e. current estimates of the cycle must be sacrificed in order to construct the filtered series. Building on the work of Baxter and King (1999), Christiano and Fitzgerald (2003) construct a ``one-sided" filter which allows the practitioner to obtain estimates of the cycle in real-time. The second essay of this dissertation, Spurious Periodicity in Christiano-Fitzgerald Filtered Time Series, studies the cyclical properties of time series filtered by the Christiano and Fitzgerald (2003) filter. I show that in the presence of a stochastic trend the CF filter imposes spurious periodicity onto the filtered series, i. e. the filter imparts cyclicality where there is none. This is due to a common defect among band-pass filters which allows cyclical components of the error term to pass through the filter to the estimated cycle. In practice, this leads to cycle estimates of higher amplitude and longer duration.
The third essay of this dissertation focuses on an emerging financial market which until recently has received little attention in the academic literature. An Analysis of Bitcoin Exchange Rates studies the relationship between bitcoin prices and the foreign exchange market in a way that has not been done before. I contend that the best way to think of bitcoins is as digital gold. Bitcoins are a purely electronic commodity traded for speculative purposes as well as in exchange for goods and services. Just like physical gold the relative price of bitcoins denominated in different currencies implies a nominal exchange rate. This is a…
Advisors/Committee Members: Papell, David H. (advisor), Murray, Christian J. (advisor), Cubas Norando, German (committee member), Pirrong, Craig (committee member).
Subjects/Keywords: Time series; Econometrics; Spectral analysis; Band-Pass Filters; Fourier analysis; Trend-Cycle Decomposition; Yield Curve; Real Time Forecasting; Bitcoin; State-Space Modeling; Kalman filter; Nelson-Siegel Modeling
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APA (6th Edition):
Smith, J. B. L. (2016). Trends and Cycles in Financial Markets: Essays in Time Series Econometrics. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1529
Chicago Manual of Style (16th Edition):
Smith, Jacob B L. “Trends and Cycles in Financial Markets: Essays in Time Series Econometrics.” 2016. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1529.
MLA Handbook (7th Edition):
Smith, Jacob B L. “Trends and Cycles in Financial Markets: Essays in Time Series Econometrics.” 2016. Web. 24 May 2020.
Vancouver:
Smith JBL. Trends and Cycles in Financial Markets: Essays in Time Series Econometrics. [Internet] [Doctoral dissertation]. University of Houston; 2016. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1529.
Council of Science Editors:
Smith JBL. Trends and Cycles in Financial Markets: Essays in Time Series Econometrics. [Doctoral Dissertation]. University of Houston; 2016. Available from: http://hdl.handle.net/10657/1529
University of Houston
29.
Xu, Siyun 1987-.
Characterization of Ionic Liquid-Graphene Interface: Sum Frequency Generation Spectroscopy and Electrochemical Studies.
Degree: PhD, Chemistry, 2014, University of Houston
URL: http://hdl.handle.net/10657/1899
► The characterization of ionic liquids near neutral and charged graphene surfaces was performed using four complementary surface techniques: sum frequency generation (SFG) spectroscopy, contact angle…
(more)
▼ The characterization of ionic liquids near neutral and charged graphene surfaces was performed using four complementary surface techniques: sum frequency generation (SFG) spectroscopy, contact angle measurement, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS).
The SFG results indicate that only the anions are attracted to the positively charged BaF2 (111) surface and occupy the first layer at the solid-liquid interface. The graphene coating shields the charged crystal surface and allows both cations and anions to exist at the ionic liquid/ graphene interface. The SFG results show the presence of both cations and anions at the charged graphene surface. The anion signal increased with the external potential growth and the cation signal had little influence on the external potential. Results from the contact angle measurement reveal the increase in the contact angle of the ionic liquid on the BaF2 surface after the graphene layer deposition, suggesting that the graphene coating modifies the wetting behavior of BaF2 substrate and lowers the surface energy. The electrochemical results suggest that ions form a stable double-layer at the charged graphene surface and the amount of cations increases with the reduction of potential. These measurements demonstrate that ions of the ionic liquid adsorb to the graphene electrode surface to generate a Helmholtz-like electric double-layer, where anions are located at the inner Helmholtz layer and cations are distributed at the outer Helmholtz layer.
Advisors/Committee Members: Baldelli, Steven (advisor).
Subjects/Keywords: Ionic liquids; Graphene; SFG spectroscopy; Electrochemical measurement
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APA (6th Edition):
Xu, S. 1. (2014). Characterization of Ionic Liquid-Graphene Interface: Sum Frequency Generation Spectroscopy and Electrochemical Studies. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1899
Chicago Manual of Style (16th Edition):
Xu, Siyun 1987-. “Characterization of Ionic Liquid-Graphene Interface: Sum Frequency Generation Spectroscopy and Electrochemical Studies.” 2014. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/1899.
MLA Handbook (7th Edition):
Xu, Siyun 1987-. “Characterization of Ionic Liquid-Graphene Interface: Sum Frequency Generation Spectroscopy and Electrochemical Studies.” 2014. Web. 24 May 2020.
Vancouver:
Xu S1. Characterization of Ionic Liquid-Graphene Interface: Sum Frequency Generation Spectroscopy and Electrochemical Studies. [Internet] [Doctoral dissertation]. University of Houston; 2014. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/1899.
Council of Science Editors:
Xu S1. Characterization of Ionic Liquid-Graphene Interface: Sum Frequency Generation Spectroscopy and Electrochemical Studies. [Doctoral Dissertation]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/1899
University of Houston
30.
Pierson, Serena M. 1975-.
Impact of Pre-kindergarten Education on Elementary Student Achievement: Implications for School Leaders.
Degree: EdD, Professional Leadership, 2013, University of Houston
URL: http://hdl.handle.net/10657/959
► The purpose of this study was to determine if pre-kindergarten attendance resulted in increased school readiness for kindergarten students; and if prekindergarten attendance resulted in…
(more)
▼ The purpose of this study was to determine if pre-kindergarten attendance resulted in increased school readiness for kindergarten students; and if prekindergarten attendance resulted in higher student achievement for third grade students. Specifically, the data for this research was drawn from the pre-kindergarten program of a mid-size district in
Houston, Texas. In terms of methodology, quantitative techniques and analysis were used to illustrate data collected from the research sample. A two-sided t-test was run on each group to model the relationship between pre-kindergarten attendance and school readiness as determined by TPRI and social screening; and, the relationship between pre-kindergarten attendance and academic success as measured by third grade TAKS. Furthermore, a multiple linear regression test was performed on each group to asses if gender and ethnicity further impacted the results of school readiness and academic success.
The findings of this research showed that attending pre-kindergarten impacted school readiness in two areas and showed no impact in one area of the TPRI. The areas that showed a positive correlation were beginning letter sound identification and listening comprehension. The area that revealed no impact was blending onset rhymes and phonemes. Another notable finding is that students who had attended pre-kindergarten showed no significant edge in socialization as identified by the
University of Texas Social Screener Survey. As for longer term success, pre-kindergarten attendance did not have a significant impact on third grade TAKS scores in neither reading nor math.
Advisors/Committee Members: Busch, Steven D. (advisor), MacNeil, Angus J. (committee member), Emerson, Michael W. (committee member), Bouillion, Dalane E. (committee member).
Subjects/Keywords: Pre-kindergarten; Student achievement; TPRI; TAKS; Professional leadership
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APA (6th Edition):
Pierson, S. M. 1. (2013). Impact of Pre-kindergarten Education on Elementary Student Achievement: Implications for School Leaders. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/959
Chicago Manual of Style (16th Edition):
Pierson, Serena M 1975-. “Impact of Pre-kindergarten Education on Elementary Student Achievement: Implications for School Leaders.” 2013. Doctoral Dissertation, University of Houston. Accessed May 24, 2020.
http://hdl.handle.net/10657/959.
MLA Handbook (7th Edition):
Pierson, Serena M 1975-. “Impact of Pre-kindergarten Education on Elementary Student Achievement: Implications for School Leaders.” 2013. Web. 24 May 2020.
Vancouver:
Pierson SM1. Impact of Pre-kindergarten Education on Elementary Student Achievement: Implications for School Leaders. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2020 May 24].
Available from: http://hdl.handle.net/10657/959.
Council of Science Editors:
Pierson SM1. Impact of Pre-kindergarten Education on Elementary Student Achievement: Implications for School Leaders. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/959
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