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Racial Disparities Study In Diabetes-Related Complication Using National Health Survey Data, Fengxia Yan
Racial Disparities Study In Diabetes-Related Complication Using National Health Survey Data, Fengxia Yan
Mathematics Theses
The main aim of this study is to compare the prevalence of diabetes-related complications in white to the prevalence in other racial and ethnic groups in United States using 2009 Behavioral Risk Factor Surveillance System (BRFSS). By constructing the logistic regression model, odds ratios (OR) were calculated to compare the prevalence of diabetes complications in white and other groups. Compared to white, the prevalence of hypertension and stroke in African Americans were higher, while the prevalence of heart attack and coronary heart disease were lower. The Asian Americans or Pacific Islanders, African Americans and Hispanics were more likely to develop …
Sequence-Specific And Conformation-Specific Targeting Of Duplex And Quadruplex Dna Grooves With Small Molecules, Rupesh K. Nanjunda
Sequence-Specific And Conformation-Specific Targeting Of Duplex And Quadruplex Dna Grooves With Small Molecules, Rupesh K. Nanjunda
Chemistry Dissertations
Small molecule mediated chemical intervention of biological processes using nucleic acid targets has proven extremely successful and is continually providing exciting new avenues for the development of anti-cancer agents and molecular probes. Among the alternative DNA confrormations, G-quadruplexes has certainly garnered much recognition due to increase in evidences supporting their involvement in diverse biological process. The grooves of the quadruplexes offer an alternate recognition site for ligand interactions with potentially higher selectivity than the traditional terminal stacking sites. DB832, a bifuryl-phenyl diamidine, was recently reported to selectively recognize human telomeric G-quadruplex, as a stacked species, with significant selectivity over duplex …
Photoionization Of The Potassium Isoelectronic Sequence: Ca+ And Transition Metal Ions, Ayao M. Sossah
Photoionization Of The Potassium Isoelectronic Sequence: Ca+ And Transition Metal Ions, Ayao M. Sossah
Physics and Astronomy Dissertations
Photoionization cross section calculations are performed for the ground ([Ne]3s23p63d 2D ) and the first two excited ([Ne]3s23p63d 2D and [Ne]3s23p64s 2S ) states of potassium-like transition metal ions (Sc+2, Ti+3, V+4, Cr+5, Mn+6, Fe+7), along with photoionization calculations for K-like Ca+ ions in the ground ([Ne]3s23p64s 2S ) state and the first two excited ([Ne]3s23p63d 2D and [Ne]3s23p63d 2D ) states. The discrete N-electron final state ion system orbitals are generated using the computer program AUTOSTRUCTURE; 24 configurations are included in the configuration-interaction (CI) calculation for transition metal ions, and 30 configurations for the case of Ca+ ions. The …
The Effects Of High Density Septic Systems On Surface Water Quality In Gwinnett County, Georgia, John R. Anderson Ii
The Effects Of High Density Septic Systems On Surface Water Quality In Gwinnett County, Georgia, John R. Anderson Ii
Geosciences Theses
Gwinnett County, Georgia experienced rapid growth in the 1970’s without the infrastructure so septic systems were installed for residential homes. The number of septic systems grew to over 85,000 with a density of 487 septic systems per square mile. This study mapped the distribution of septic systems to determine regions of potential pathogen surface water. This study addressed what potential health risks do high density septic systems have on surface water quality and how can the history of Gwinnett County assist in future development in the Metropolitan Atlanta area? It was found that the density of septic systems has reduced …
Dynamic Data Driven Application System For Wildfire Spread Simulation, Feng Gu
Dynamic Data Driven Application System For Wildfire Spread Simulation, Feng Gu
Computer Science Dissertations
Wildfires have significant impact on both ecosystems and human society. To effectively manage wildfires, simulation models are used to study and predict wildfire spread. The accuracy of wildfire spread simulations depends on many factors, including GIS data, fuel data, weather data, and high-fidelity wildfire behavior models. Unfortunately, due to the dynamic and complex nature of wildfire, it is impractical to obtain all these data with no error. Therefore, predictions from the simulation model will be different from what it is in a real wildfire. Without assimilating data from the real wildfire and dynamically adjusting the simulation, the difference between the …
A Framework For Group Modeling In Agent-Based Pedestrian Crowd Simulations, Fasheng Qiu
A Framework For Group Modeling In Agent-Based Pedestrian Crowd Simulations, Fasheng Qiu
Computer Science Dissertations
Pedestrian crowd simulation explores crowd behaviors in virtual environments. It is extensively studied in many areas, such as safety and civil engineering, transportation, social science, entertainment industry and so on. As a common phenomenon in pedestrian crowds, grouping can play important roles in crowd behaviors. To achieve more realistic simulations, it is important to support group modeling in crowd behaviors. Nevertheless, group modeling is still an open and challenging problem. The influence of groups on the dynamics of crowd movement has not been incorporated into most existing crowd models because of the complexity nature of social groups. This research develops …
Microvariability Of The Blazar 3c279, Hannah M. Clemmons
Microvariability Of The Blazar 3c279, Hannah M. Clemmons
Physics and Astronomy Theses
Active Galactic Nuclei (AGN) are some of the most extreme objects in the universe. They output copious amounts of energy spanning the entire electromagnetic spectrum. There are many different subclasses of AGN depending on your viewing angle. Blazars, viewing down the relativistic jet, are the most variable class of AGN known. They exhibit extreme variability in all wavelengths on timescales as short as minutes. In this thesis I will consider the extreme faintness of 3C279 with respect to the long-term light curve as well as recent observations of microvariability. I am able to confirm small amplitude events using simultaneous observations …
Voices, Echoes, And Narratives: Multidimensional Experiences Of Three Teachers Immersed In Ethnomathematical Encounters In Morocco, Mekyah Q. Mcqueen, Stanley F. H. Shaheed, Curtis V. Goings, Iman C. Chahine
Voices, Echoes, And Narratives: Multidimensional Experiences Of Three Teachers Immersed In Ethnomathematical Encounters In Morocco, Mekyah Q. Mcqueen, Stanley F. H. Shaheed, Curtis V. Goings, Iman C. Chahine
Middle-Secondary Education and Instructional Technology Faculty Publications
No abstract provided.
How Is It That One Particular Statement Appeared Rather Than Another?: Opening A Different Space For Different Statements About Urban Mathematics Education, David W. Stinson
How Is It That One Particular Statement Appeared Rather Than Another?: Opening A Different Space For Different Statements About Urban Mathematics Education, David W. Stinson
Middle-Secondary Education and Instructional Technology Faculty Publications
In this editorial, the author applies Michel Foucault's concept of "discursive formations" to examine fictions, fantasies, and power relationships in mathematics education research.
Virtual Dynamic Tunnel: A Target-Agnostic Assistive User Interface Algorithm For Head-Operated Input Devices, Ferrol R. Blackmon
Virtual Dynamic Tunnel: A Target-Agnostic Assistive User Interface Algorithm For Head-Operated Input Devices, Ferrol R. Blackmon
Computer Science Dissertations
Today the effective use of computers (e.g. those with Internet browsers and graphical interfaces) involves the use of some sort of cursor control like what a mouse provides. However, a standard mouse is not always the best option for all users. There are currently many devices available to provide alternative computer access. These devices may be divided into categories: brain-computer interfaces (BCI), mouth-based controls, camera-based controls, and head-tilt controls. There is no single solution as each device and application has to be tailored to each user's unique preferences and abilities. Furthermore, each device category has certain strengths and weaknesses that …
Empirical Likelihood Confidence Intervals For Roc Curves Under Right Censorship, Hanfang Yang
Empirical Likelihood Confidence Intervals For Roc Curves Under Right Censorship, Hanfang Yang
Mathematics Theses
In this thesis, we apply smoothed empirical likelihood method to investigate confidence intervals for the receiver operating characteristic (ROC) curve with right censoring. As a particular application of comparison of distributions from two populations, the ROC curve is constructed by the combination of cumulative distribution function and quantile function. Under mild conditions, the smoothed empirical likelihood ratio converges to chi-square distribution, which is the well-known Wilks's theorem. Furthermore, the performances of the empirical likelihood method are also illustrated by simulation studies in terms of coverage probability and average length of confidence intervals. Finally, a primary biliary cirrhosis data is used …
Optical Properties Of In1-Xgaxn Epilayers Grown By Hpcvd, Jielei Wang Ms
Optical Properties Of In1-Xgaxn Epilayers Grown By Hpcvd, Jielei Wang Ms
Physics and Astronomy Theses
Optical absorption spectroscopy has been applied to study properties such as the fundamental absorption edge and defect absorption centers of group III-nitride compound semiconductor epilayers. The investigation in this thesis focused on analyzing the band gap of indium-rich In1-xGaxN epilayers, which where grown by the high-pressure chemical vapor deposition (HPCVD) technique. Our results - together with literature data for gallium-rich In1-xGaxN alloys indicate that the shift of the fundamental band gap of In1-xGaxN with composition x can be described with a bowing parameter of b = 2.2eV. Temperature dependent transmission measurements show that the band gap variation with temperature follows …
Looking In The Crystal Ball: Determinants Of Excess Return, Kokou S. Akolly
Looking In The Crystal Ball: Determinants Of Excess Return, Kokou S. Akolly
Mathematics Theses
This paper investigates the determinants of excess returns using dividend yields as a proxy in a cross-sectional setting. First, we find that types of industry and the current business cycle are determining factors of returns. Second, our results suggest that dividend yield serves a signaling mechanism indicating “healthiness” of a firm among prospective investors. Third we see that there is a positive relationship between dividend yield and risk, especially in the utility and financial sectors. And finally, using actual excess returns, instead of dividend yield in our model shows that all predictors of dividend yield were also significant predictors of …
Rational Drug Design For Neglected Diseases: Implementation Of Computational Methods To Construct Predictive Devices And Examine Mechanisms, Catharine Jane Collar
Rational Drug Design For Neglected Diseases: Implementation Of Computational Methods To Construct Predictive Devices And Examine Mechanisms, Catharine Jane Collar
Chemistry Dissertations
Over a billion individuals worldwide suffer from neglected diseases. This equates to approximately one-sixth of the human population. These infections are often endemic in remote tropical regions of impoverished populations where vectors can flourish and infected individuals cannot be effectively treated due to a lack of hospitals, medical equipment, drugs, and trained personnel. The few drugs that have been approved for the treatments of such illnesses are not widely used because they are riddled with inadequate implications of cost, safety, drug availability, administration, and resistance. Hence, there exists an eminent need for the design and development of improved new therapeutics. …
Design And Synthesis Of Novel Serotonin Receptor Ligands, Jeffrey D. Klenc
Design And Synthesis Of Novel Serotonin Receptor Ligands, Jeffrey D. Klenc
Chemistry Dissertations
Novel and potent ligands to the serotonin7 (5-HT7) receptor have been synthesized. The synthesized compounds include a set of substituted pyrimidines which show high affinity to the 5-HT7 receptor, synthesized by previously described methods [1,2] in high yield. Comparing the affinities of substituted pyrimidines to previously calculated models [3,4] yielded new hypotheses about the nature of interaction between the pyrimidine ligands and the 5-HT7 binding site. Several new series of compounds were synthesized by various methods to validate these hypotheses, including a conjugate addition to vinylpyrimidines [5]. These compounds include benzofurans, oximes, hydrazones, as well as a group of substituted …
K-Ar Age Values Of Bulk Soil Samples And Clay Fractions: Effects Of Acid Extraction And Implications For The Origin Of Micaceous Clay In Savannah River Site Soils, South Carolina, Usa, Thomas E. Naumann
Geosciences Theses
Understanding how natural Cs, Rb, and K have been redistributed in Savannah River Site (SRS) soils during pedogenesis is important to understanding how radiocesium released to the soils will behave over the long term. In this effort, it is important to distinguish K that has participated in mineral-water reactions from that still residing in primary silicate structures, particularly in the clay fraction. The impact of different degrees of acid extraction on K and radiogenic Ar in bulk soil and in clay from five SRS soil samples has been determined. Strong treatment (50% HNO3, three hours, 100°C) releases K from primary …
Enhanced Web Search Engines With Query-Concept Bipartite Graphs, Yan Chen
Enhanced Web Search Engines With Query-Concept Bipartite Graphs, Yan Chen
Computer Science Dissertations
With rapid growth of information on the Web, Web search engines have gained great momentum for exploiting valuable Web resources. Although keywords-based Web search engines provide relevant search results in response to users’ queries, future enhancement is still needed. Three important issues include (1) search results can be diverse because ambiguous keywords in queries can be interpreted to different meanings; (2) indentifying keywords in long queries is difficult for search engines; and (3) generating query-specific Web page summaries is desirable for Web search results’ previews. Based on clickthrough data, this thesis proposes a query-concept bipartite graph for representing queries’ relations, …
Cox Model Analysis With The Dependently Left Truncated Data, Ji Li
Cox Model Analysis With The Dependently Left Truncated Data, Ji Li
Mathematics Theses
A truncated sample consists of realizations of a pair of random variables (L, T) subject to the constraint that L ≤T. The major study interest with a truncated sample is to find the marginal distributions of L and T. Many studies have been done with the assumption that L and T are independent. We introduce a new way to specify a Cox model for a truncated sample, assuming that the truncation time is a predictor of T, and this causes the dependence between L and T. We develop an algorithm to obtain the adjusted risk sets and use the Kaplan-Meier …
Assessing The Effectiveness Of Studio Physics At Georgia State University, Brianna M. Upton
Assessing The Effectiveness Of Studio Physics At Georgia State University, Brianna M. Upton
Physics and Astronomy Theses
Previous studies have shown that many students have misconceptions about basic concepts in physics which persist after instruction. It has been concluded that one of the challenges lies in the teaching methodology. To address this, Georgia State University (GSU) has begun teaching studio algebra-based physics. Although many institutions have implemented studio physics, most have done so in calculus-based sequences. Additionally, the unique environment of GSU’s population as a diverse, urban research institution is considered. The effectiveness of the studio approach for this demographic in an algebra-based introductory physics course was assessed. This five-semester pilot study presents demographic survey results and …
Energy-Efficient Data Management In Wireless Sensor Networks, Chunyu Ai
Energy-Efficient Data Management In Wireless Sensor Networks, Chunyu Ai
Computer Science Dissertations
Wireless Sensor Networks (WSNs) are deployed widely for various applications. A variety of useful data are generated by these deployments. Since WSNs have limited resources and unreliable communication links, traditional data management techniques are not suitable. Therefore, designing effective data management techniques for WSNs becomes important. In this dissertation, we address three key issues of data management in WSNs. For data collection, a scheme of making some nodes sleep and estimating their values according to the other active nodes’ readings has been proved energy-efficient. For the purpose of improving the precision of estimation, we propose two powerful estimation models, Data …
The Sixth International Mathematics Education And Society Conference: Finding Freedom In A Mathematics Education Ghetto, David W. Stinson
The Sixth International Mathematics Education And Society Conference: Finding Freedom In A Mathematics Education Ghetto, David W. Stinson
Middle-Secondary Education and Instructional Technology Faculty Publications
In this editorial, the author relates his experiences at the Sixth International Mathematics Education and Society Conference, held March 2010 in Berlin, Germany, and explores whether urban mathematics educators can navigate historically marginalized racial, ethnic, religious, cultural, gendered, sexual, intellectual, and other communities to find freedom in a what he sees as a "mathematics education ghetto."
The Nuts And Bolts: A Review Of Culturally Specific Pedagogy In The Mathematics Classroom: Strategies For Teachers And Students, Shonda Lemons-Smith
The Nuts And Bolts: A Review Of Culturally Specific Pedagogy In The Mathematics Classroom: Strategies For Teachers And Students, Shonda Lemons-Smith
Middle-Secondary Education and Instructional Technology Faculty Publications
The author reviews Jacqueline Leonard's Culturally Specific Pedagogy in the Mathematics Classroom: Strategies for Teachers and Students.
Collaborative Evaluative Inquiry: A Model For Improving Mathematics Instruction In Urban Elementary Schools, Iman C. Chahine, Lesa M. Covington Clarkson
Collaborative Evaluative Inquiry: A Model For Improving Mathematics Instruction In Urban Elementary Schools, Iman C. Chahine, Lesa M. Covington Clarkson
Middle-Secondary Education and Instructional Technology Faculty Publications
In this article, the authors describe the cyclical process of a collaborative evaluative inquiry project and the data collected throughout the project—data that not only informed "next steps" during the project but also show promise in documenting the benefits of such projects. Over a period of 18 months, seven elementary teachers from a K–6 urban elementary school collaborated with university personnel using Parsons’s (2002) Evaluative Inquiry Model, a 5-stage, cyclical model that includes defining, planning, and investigating challenges; collecting, analyzing, and synthesizing data; and communicating findings that transpire through collaborative inquiry. Overall, the project focused on improving the elementary teachers’ …
Bead Modeling Of Transport Properties Of Macromolecules In Free Solution And In A Gel, Hongxia Pei
Bead Modeling Of Transport Properties Of Macromolecules In Free Solution And In A Gel, Hongxia Pei
Chemistry Dissertations
On the bead modeling methodology, or BMM, a macromolecule is modeled as a rigid, non-overlapping bead array with arbitrary radii. The BMM approach was pioneered by Kirkwood and coworkers (Kirkwood, J.G., Macromolecules, E.P. Auer (Ed.), Gordon and Breach, New York, 1967; Kirkwood, J.G., Riseman, J., J. Chem. Phys., 1948, 16, 565) and applied to such transport properties as diffusion, sedimentation, and viscosity. With the availability of computers, a number of investigators extended the work to account for the detailed shape of biomolecules in the 1970s. A principle objective of my research has been to apply the BMM approach to more …
Mineralogical And Geochemical Indicators Of Subaerial Weathering In The Pozzolane Rosse Ignimbrite (Alban Hills Volcanic District, Italy), Jennifer M. Dickie
Mineralogical And Geochemical Indicators Of Subaerial Weathering In The Pozzolane Rosse Ignimbrite (Alban Hills Volcanic District, Italy), Jennifer M. Dickie
Geosciences Theses
The Pozzolane Rosse ignimbrite [PR] (457±4 ka) in the Alban Hills Volcanic District, Rome, Italy was exposed ~ 40 ka prior to a subsequent volcanic event which coverd it entirely. XRF, XRD, and clay separation results from PR samples from INGV and CA1 boreholes and Castel di Leva quarry show evidence of paleopedogenesis. All locations display loss of base cations, loss of K is consistent with XRD datat showing dissolution or alteration of leucite to analcime. Accumulation of Al and high L.O.I. support XRD evidence of 1:1 clay species at upper depth. Data suggest alteration extent can be determined by …
Censoring Maps In Google China? Visual Analysis Through Foucault't Power/Knowledge, Zhanar Karimbayeva
Censoring Maps In Google China? Visual Analysis Through Foucault't Power/Knowledge, Zhanar Karimbayeva
Geosciences Theses
This thesis explores aspects of map censorship in Google China through a theoretical framework based on Foucault’s power/knowledge. Comparing results of content analysis of maps in Google Ditu in Google China and Google Maps in Google Dot Com, the thesis analyzes the degree of censorship of maps in the Google geoweb. My findings are a higher density of labeling in Google Ditu in comparison with Google Maps, the absence of VGI in Google Ditu, the limitation of zoom level at Google Ditu, and the absence of Street View in China. This thesis suggests possible explanations to differences in map information …
Measuring The Effective Wavelength Of Chara Classic, Emily Collins Bowsher
Measuring The Effective Wavelength Of Chara Classic, Emily Collins Bowsher
Physics and Astronomy Theses
This thesis presents an engineering project measuring the effective wavelength of the CHARA Classic beam combiner on the CHARA Array. Knowing the actual effective wavelength of light observed is very important because that value is necessary for determining astrophysical parameters of stars. Currently, the value used for CHARA Classic data comes from a model of the system and is based on numbers published by the manufacturer of the filter; it is not derived from measurements done on the system directly. We use two data collection methods to observe standard stars of different spectral types and calculate the wavelength of light …
Ontology And Knowledge Base Of Brittle Deformation Microstructures For The San Andreas Fault Observatory At Depth (Safod) Core Samples, Cynthia Marie Broda
Ontology And Knowledge Base Of Brittle Deformation Microstructures For The San Andreas Fault Observatory At Depth (Safod) Core Samples, Cynthia Marie Broda
Geosciences Theses
The quest to answer fundamental questions and solve complex problems is a principal tenet of Earth science. The pursuit of scientific knowledge has generated profuse research, resulting in a plethora of information-rich resources. This phenomenon offers great potential for scientific discovery. However, a deficiency in information connectivity and processing standards has become evident. This deficiency has resulted in a demand for tools to facilitate and process this upsurge in information. This ontology project is an answer to the demand for information processing tools. The primary purpose of this domain-specific ontology and knowledge base is to organize, connect, and correlate research …
Weak Primary Decomposition Of Modules Over A Commutative Ring, Harrison Stalvey
Weak Primary Decomposition Of Modules Over A Commutative Ring, Harrison Stalvey
Mathematics Theses
This paper presents the theory of weak primary decomposition of modules over a commutative ring. A generalization of the classic well-known theory of primary decomposition, weak primary decomposition is a consequence of the notions of weakly associated prime ideals and nearly nilpotent elements, which were introduced by N. Bourbaki. We begin by discussing basic facts about classic primary decomposition. Then we prove the results on weak primary decomposition, which are parallel to the classic case. Lastly, we define and generalize the Compatibility property of primary decomposition.
The Optical And Radio Properties Of A Low-Redshift Sample Of Broad-Lined Active Galactic Nuclei, Stephen E. Rafter
The Optical And Radio Properties Of A Low-Redshift Sample Of Broad-Lined Active Galactic Nuclei, Stephen E. Rafter
Physics and Astronomy Dissertations
The question as to whether the distribution of radio loudness in active galactic nuclei (AGN) is actually bimodal has been discussed extensively in the literature. Furthermore, there have been claims that radio loudness depends on black hole mass and Eddington ratio. We investigate these claims using the low redshift broad line AGN sample of Greene & Ho 2007, which consists of 8434 objects at z < 0.35 from the Sloan Digital Sky Survey (SDSS) Fourth Data Release. We obtained radio fluxes from the Very Large Array Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) survey for the SDSS AGN. Out of the 8434 SDSS AGN, 846 have radio emission within 4" of the optical counterpart and are considered to be core emission. We also perform a systematic search for extended emission in FIRST that can be positively associated with the optical counterparts and find 51 out of the 846 previously detected core sources have extended emission that must be taken into account when calculating the total radio luminosity. Further, we find an additional 12 objects that have extended radio emission but no detectable radio core and have classic FR II type morphologies. Using these data, the question of radio bimodality and the dependence of radio-loudness on physical parameters are investigated for different subsets of the total sample. We find modest trends in the radio-loud fraction as a function of black hole mass and Eddington ratio, where the fraction of RL AGN increases for the largest black hole mass group and decreases with increasing Eddington ratio. With extended emission taken into account, we find strong evidence for a bimodal distribution in radio-loudness, where the lower radio luminosity core-only sources appear as a population separate from the extended sources with a dividing line at log(R) = 1.75. This dividing line is interesting in that it requires the radio luminosity to be 50 times the optical luminosity, ensuring that these are indeed the most RL AGN, which may have different or extreme physical conditions in their central engines when compared to the more numerous radio quiet AGN in this sample.