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Orange & White - Fall 2013, University Of Texas At Brownsville

UTB/TSC Archives - Orange & White Magazine

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Utpa Commencement – Fall 2013, University Of Texas - Pan American

Edinburg Archives - Legacy Commencement Programs

No abstract provided.

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Mexican-American Children’S Perspectives: Neighborhood Characteristics And Physical Activity In Texas-Mexico Border Colonias, Nelda Mier, Chanam Lee, Matthew Lee Smith, Xiaohui Wang, David Irizarry, Elias H. Avila-Rodriguez, Laura Trevino, Marcia G. Ory

School of Mathematical & Statistical Sciences Faculty Publications

The qualitative study described in this article investigated perceptions about environmental factors infl uencing physical activity (PA) among children from underserved neighborhoods known as colonias in the U.S.-Mexico border. Ten focus groups were conducted with 67 Mexican-American colonia children ages 8 to 13 living in one of the poorest border counties in the U.S. Analyses indicated that PA among children was influenced by neighborhood characteristics, including litter, speeding cars, unleashed dogs, and dark streets. The children also underlined intrapersonal and social environmental factors. Findings may inform policy makers and public health professionals about ways to promote PA among underserved children …

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Utpa Stats At A Glance - Fall 2013, University Of Texas-Pan American

UTPA Archives - Stats At A Glance

No abstract provided.

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Mexican-American Children's Perspectives: Neighborhood Characteristics And Physical Activity In Texas-Mexico Border Colonias, Nelda Mier, Chanam Lee, Matthew Lee Smith, Xiaohui Wang, Elias H. Avila-Rodriguez, Laura Trevino, Marcia G. Ory

School of Mathematical & Statistical Sciences Faculty Publications

The qualitative study described in this article investigated perceptions about environmental factors influencing physical activity (PA) among children from underserved neighborhoods known as colonias in the U.S.-Mexico border. Ten focus groups were conducted with 67 Mexican-American colonia children ages 8 to 13 living in one of the poorest border counties in the U.S. Analyses indicated that PA among children was influenced by neighborhood characteristics, including litter, speeding cars, unleashed dogs, and dark streets. The children also underlined intrapersonal and social environmental factors. Findings may inform policy makers and public health professionals about ways to promote PA among underserved children through …

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Derivative Couplings And Analytic Gradients For Diabatic States, With An Implementation For Boys-Localized Configuration-Interaction Singles, Shervin Fatehi, Ethan Alguire, Joseph Subotnik

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

We demonstrate that Boys-localized diabatic states do indeed exhibit small derivative couplings, as is required of quasidiabatic states. In doing so, we present a general formalism for calculating derivative couplings and analytic gradients for diabatic states. We then develop additional equations specific to the case of Boys-localized configuration-interaction singles (CIS)—in particular, the analytic gradient of the CIS dipole matrix—and we validate our implementation against finite-difference results. In a forthcoming paper, we will publish additional algorithmic and computational details and apply our method to the Closs energy-transfer systems as a further test of the validity of Boys-localized diabatic states.

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The Collegian (2013-09-23), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 5

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Goals Strategies And First Discoveries Of Ao327 The Arecibo All-Sky 327 Mhz Drift Pulsar Survey, J. S. Deneva, K. Stovall, M. A. Mclaughlin, S. D. Bates, P. C.C. Freire, J. G. Martinez, F. Jenet, M. Bagchi

Physics & Astronomy Faculty Publications

We report initial results from AO327, a drift survey for pulsars with the Arecibo telescope at 327 MHz. The first phase of AO327 will cover the sky at declinations of -1Â° to 28Â°, excluding the region within 5Â° of the Galactic plane, where high scattering and dispersion make low-frequency surveys sub-optimal. We record data from a 57 MHz bandwidth with 1024 channels and 125 Î¼s sampling time. The 60 s transit time through the AO327 beam means that the survey is sensitive to very tight relativistic binaries even with no acceleration searches. To date we have detected 44 known pulsars …

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The Collegian (2013-09-16), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 4

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The Collegian (2013-09-09), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 3

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The Pan American (2013-09-05), Norma Gonzalez, Lea Victoria Juarez

UTPA Archives - The Pan American Newspaper

Vol. 70, No. 2

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Cloning And Characterization Of Ef-Tu And Ef-Ts From Pseudomonas Aeruginosa, Stephanie O. Palmer, Edna Y. Rangel, Alberto E. Montalvo, Alexis T. Tran, Kate C. Ferguson, James M. Bullard

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

We have cloned genes encoding elongation factors We have cloned genes encoding elongation factors EF-Tu and EF-Ts from Pseudomonas aeruginosa and expressed and purified the proteins to greater than 95% homogeneity. Sequence analysis indicated that P. aeruginosa EF-Tu and EF-Ts are 84% and 55% identical to E. coli counterparts, respectively. P. aeruginosa EF-Tu was active when assayed in GDP exchange assays. Kinetic parameters for the interaction of EF-Tu with GDP in the absence of EF-Ts were observed to be = 33 μM, = 0.003 s−1, and the specificity constant was s−1 μM−1. In the presence of EF-Ts, these values were …

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The Collegian (2013-09-02), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 2

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Facile, Green Synthesis Of Large Single Crystal Copper Micro And Nanoparticles With Ascorbic Acid And Gum Arabic, Preston B. Landon, Alexander H. Mo, Carlos T. Ramos, Jose J. Gutierrez, Ratnesh Lal

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

Large single crystal colloidal copper particles with diameters between 0.5 - 2 μm were created using a green synthesis process. The process used ascorbic acid to reduce Schweizer’s reagent created in situ using copper salts in the presence of various concentrations of gum arabic. The Schweizer’s reagents were created by varying the concentrations of ammonium hydroxide and copper nitrate solutions, copper hydroxide, or copper sulfate. The pH of the solution was controlled by the addition of ascorbic acid. Particle formation was favored at high temperature using copper sulfate at pH values ranging from 7.5 to 9, while the optimal formation …

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The Collegian (2013-08-26), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 1

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The Einstein@Home Search For Radio Pulsars And Psr J2007+2722 Discovery, B. Allen, B. Knispel, J. M. Cordes, J. S. Deneva, J. W.T. Hessels, D. Anderson, C. Aulbert, O. Bock, Fredrick A. Jenet, Kevin Stovall

Physics & Astronomy Faculty Publications

Einstein@Home aggregates the computer power of hundreds of thousands of volunteers from 193 countries, to search for new neutron stars using data from electromagnetic and gravitational-wave detectors. This paper presents a detailed description of the search for new radio pulsars using Pulsar ALFA survey data from the Arecibo Observatory. The enormous computing power allows this search to cover a new region of parameter space; it can detect pulsars in binary systems with orbital periods as short as 11 minutes. We also describe the first Einstein@Home discovery, the 40.8 Hz isolated pulsar PSR J2007+2722, and provide a full timing model. PSR …

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Timing Of Favorable Conditions, Competition And Fertility Interact To Govern Recruitment Of Invasive Chinese Tallow Tree In Stressful Environments, Christopher A. Gabler, Evan Siemann

School of Earth, Environmental, & Marine Sciences Faculty Publications

The rate of new exotic recruitment following removal of adult invaders (reinvasion pressure) influences restoration outcomes and costs but is highly variable and poorly understood. We hypothesize that broad variation in average reinvasion pressure of Triadica sebifera (Chinese tallow tree, a major invader) arises from differences among habitats in spatiotemporal availability of realized recruitment windows. These windows are periods of variable duration long enough to permit establishment given local environmental conditions. We tested this hypothesis via a greenhouse mesocosm experiment that quantified how the duration of favorable moisture conditions prior to flood or drought stress (window duration), competition and nutrient …

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Causes, Consequences, And Treatment Of Osteoporosis In Men, Jameela Banu

Health & Biomedical Sciences Faculty Publications

Men undergo gradual bone loss with aging, resulting in fragile bones. It is estimated that one in five men will suffer an osteoporotic fracture during their lifetime. The prognosis for men after a hip fracture is very grim. A major cause is reduction of free testosterone. Many other factors result in secondary osteoporosis, including treatment for other diseases such as cancer and diabetes. Patients should be screened not only for bone density but also assessed for their nutritional status, physical activity, and drug intake. Therapy should be chosen based on the type of osteoporosis. Available therapies include testosterone replacement, bisphosphonates, …

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Diffusivity And Sorptivity Of Berea Sandstone Determined Using Neutron Radiography, M. Kang, Chu-Lin Cheng, H. Z. Bilheux, Michael J. Gragg, D. M. Wright, J. M. Lamanna, J. Horita, J. M. Warren

Civil Engineering Faculty Publications

Neutron radiography is increasingly being used to study the dynamics of water movement in variably saturated porous media. It has been applied to visualize water imbibition in both natural and engineered materials, including soil, rock, brick, concrete, and glass. The sorptivity, S, and unsaturated diffusivity, D(θ), are important parameters for describing water movement under partially saturated conditions. Estimates of S and D(θ) have been obtained using a variety of techniques, including neutron imaging. However, we could find no previous reports of such measurements for the Berea sandstone, regardless of the method employed. Berea sandstone is a widespread, …

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Accuracy Analysis Of Parallel Method Based On Non-Overlapping Domain Decomposition Method, Moonho Tak, Yooseob Song, Hye-Kwan Jeon, Taehyo Park

Civil Engineering Faculty Publications

In this paper, an accuracy analysis of parallel method based on non-overlapping domain decomposition method is carried out. In this approach, proposed by Tak et al.(2013), the decomposed subdomains do not overlap each other and the connection between adjacent subdomains is determined via simple connective finite element named interfacial element. This approach has two main advantages. The first is that a direct method such as gauss elimination is available even in a singular problem because the singular stiffness matrix from floating domain can be converted to invertible matrix by assembling the interfacial element. The second is that computational time and …

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Traveling Wave Solution To Two-Dimensional Burgers-Korteweg-De Vries Equation, Xiaoqian Gong

Theses and Dissertations - UTB/UTPA

In this thesis, we study the Two-Dimensional Burgers-Korteweg-de Vries (2D-BKdV) equation by analyzing the equivalent Abel equation, which indicates that under some particular conditions, the 2D-BKdV equation has a unique bounded traveling wave solution. By using the theorem of contractive mapping, a traveling wave solution to the 2D-BKdV equation is expressed explicitly. In the end, the behavior of the proper solution of the 2D-BKdV equation is established by applying the comparison theorem of differential equations.

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Understanding User Resistance To Information Technology: Toward A Comprehensive Model In Health Information Technology, Madison N. Ngafeeson

Theses and Dissertations - UTB/UTPA

The successful implementation of health information systems is expected to increase legibility, reduce medical errors, boost the quality of healthcare and shrink costs. Yet, evidence points to the fact that healthcare professionals resist the full use of these systems. Physicians and nurses have been reported to resist the system. Even though resistance to technology has always been identified as key issue in the successful implementation of information technology, the subject remains largely under-theorized and deficient of empirical testing. Only two proposed model have been tested so far. Hence, though user resistance is clearly identified and defined in literature, not very …

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Distributed Sparse Matrix Solver And Pivoting Algorithms For Large Linear Equations, Esteban Torres

Theses and Dissertations - UTB/UTPA

This thesis presents a distributed sparse direct solver and pivoting strategies for distributed sparse LU factorization. In Chapter I, we introduce some background concepts in linear algebra. In Chapter II, we discuss parallel hardware architectures and introduce our problem for discussion. In Chapter III, we describe the implementation of our sparse direct solver and our pivoting algorithms. Next, we present our simulation methodology and results in Chapter IV and we show that our pivoting algorithm yields up to 50% more accurate results than a current state-of-the-art solver, SuperLU_DIST. Finally, in Chapter V, we present some ideas to further improve the …

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Effects Of Habitat Enrichment On The Stress Level Of The Sit-And-Wait Predator Sand Boa (Gongylophis Colubrinus), Jose Manuel Cantu Martinez

Theses and Dissertations - UTB/UTPA

Conditions in which the animals are housed vary according to animal use. Conditions unfamiliar or unsuited to organisms usually induce stress. Stress is mirrored by a hormone cascade resulting in glucocorticoids. Of the glucocorticoids corticosterone is regarded as the most important. The corticosterone levels of sand boas (Gongylophis colubrinus) were measured under enriched and barren soil and cage features. Enriched soil consisted of enough dirt to allow borrowing. Enriched cage featured consisted of a wooded ball. Barren soil consisted of newspaper as substrate. Barren cage features consisted of plane newspaper. Snakes were subject to treatment for two weeks. No significant …

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Synthetic Aperture Radar With Compressed Sensing, Yufeng Cao

Theses and Dissertations - UTB/UTPA

A general synthetic aperture radar (SAR) signal model is derived from the Maxwell’s equations, and compressed sensing are introduced to the signal model for SAR image reconstruction. Random Partial Fourier Matrices were applied to prove that compressed sensing can be used to this signal model from the viewpoint of mathematics. In the numerical simulation part, we show that the procedure of basis pursuit can reconstruct SAR image, based on our main results, which is shown efficient in comparison with the matched filter algorithm.

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Examine Participant Dropout, Undiagnosed Diabetes And Undiagnosed Prediabetes In A Chronic Disease Prevention Education Program, Yiwen Cao

Theses and Dissertations - UTB/UTPA

There were 2768 participants enrolled in a chronic disease prevention education program. Survey and health measurements were obtained at three time points. We examine potential factors that might contribute to participant dropout, undiagnosed diabetes and undiagnosed prediabetes respectively. Logistic regression was used to examine the association between participant dropout and predictors, and to compare the odds of being undiagnosed with diabetes and prediabetes. We found that the potential predictors for participant dropout included age, employment, insurance, diabetes, self-reported health status, session type, program duration and curriculum. Factors affecting undiagnosed diabetes and prediabetes were age, self-reported health status birth country, limited …

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On Cubic Multisections, Andrew Alaniz

Theses and Dissertations - UTB/UTPA

In this thesis, a systematic procedure is given for generating cubic multi-sections of Eisenstein series. The relevant series are determined from Fourier expansions for Eisenstein series by restricting the congruence class of the summation index modulo three. The resulting series are shown to be rational functions of the Dedekind eta function. A more general treatment of cubic dissection formulas is given by describing the dissection operators in terms of linear transformations.

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Examining The Association Between Personality And Alcohol Use Among Mexican Americans: Acculturation And Gender As Moderators, Miguel A. Reyes

Theses and Dissertations - UTB/UTPA

In this study the moderating effects of gender and acculturation on the association between personality traits and alcohol use among Mexican American adults were examined. Participants for this study were undergraduate students from a university in the southwestern USA (N=572, 94.5% Hispanic, 72.6% female). The sample completed self-report measures of personality, alcohol use, and acculturation. When using, regression analyses, alcohol use was found to be weakly yet negatively associated with Conscientiousness, weakly yet positively with Neuroticism, and statistically unrelated to Extroversion. The moderation hypotheses were not supported when utilizing a multiple regression analyses. However, a post-hoc analysis of variance involving …

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Lax Pairs For Some Nonlinear Equations, Ana Castillo

Theses and Dissertations - UTB/UTPA

Several methods have been proposed to approach the topic of integrable systems of nonlinear partial differential equations. One of these methods is called the Lax pair. The Lax pair is a pair of matrices or operators, that depend on time and satisfy the Lax equation. Based on the inverse scattering method introduced by Gardner, Greene, Kruskal and Miura (1967), Peter Lax introduced the Lax pair to derive soliton equations from the Lax equation. This thesis provides with a brief background on soliton theory, inverse scattering theory, and Lax pairs. The details missing in the work published by Ablowitz, Kaup, Newell, …

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Development Of Hydrodynamic Channel Routing Model Of The Lower Rio Grande River To Assist In Flood And Stormwater Management, Andrew W. Leeper

Theses and Dissertations - UTB/UTPA

Flooding and stormwater management of the Lower Rio Grande River (LRG) has become a major issue throughout the years with local entities along the river. The purpose of this study is to develop a hydrodynamic channel routing model to predict water surface elevation changes due to flooding. The study area consists of the LRG from Los Ebanos to Brownsville, Texas. This hydrodynamic model displays the hydraulics of the water flow through the LRG and determines where potential flood hazards exist. To verify the accuracy of the model a series of calculated output hydrographs were established at the Progreso Bridge and …

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Full-Text Articles in Entire DC Network

Orange & White - Fall 2013, University Of Texas At Brownsville

UTB/TSC Archives - Orange & White Magazine

Utpa Commencement – Fall 2013, University Of Texas - Pan American

Edinburg Archives - Legacy Commencement Programs

Mexican-American Children’S Perspectives: Neighborhood Characteristics And Physical Activity In Texas-Mexico Border Colonias, Nelda Mier, Chanam Lee, Matthew Lee Smith, Xiaohui Wang, David Irizarry, Elias H. Avila-Rodriguez, Laura Trevino, Marcia G. Ory

School of Mathematical & Statistical Sciences Faculty Publications

Utpa Stats At A Glance - Fall 2013, University Of Texas-Pan American

UTPA Archives - Stats At A Glance

Mexican-American Children's Perspectives: Neighborhood Characteristics And Physical Activity In Texas-Mexico Border Colonias, Nelda Mier, Chanam Lee, Matthew Lee Smith, Xiaohui Wang, Elias H. Avila-Rodriguez, Laura Trevino, Marcia G. Ory

School of Mathematical & Statistical Sciences Faculty Publications

Derivative Couplings And Analytic Gradients For Diabatic States, With An Implementation For Boys-Localized Configuration-Interaction Singles, Shervin Fatehi, Ethan Alguire, Joseph Subotnik

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

The Collegian (2013-09-23), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Goals Strategies And First Discoveries Of Ao327 The Arecibo All-Sky 327 Mhz Drift Pulsar Survey, J. S. Deneva, K. Stovall, M. A. Mclaughlin, S. D. Bates, P. C.C. Freire, J. G. Martinez, F. Jenet, M. Bagchi

Physics & Astronomy Faculty Publications

The Collegian (2013-09-16), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

The Collegian (2013-09-09), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

The Pan American (2013-09-05), Norma Gonzalez, Lea Victoria Juarez

UTPA Archives - The Pan American Newspaper

Cloning And Characterization Of Ef-Tu And Ef-Ts From Pseudomonas Aeruginosa, Stephanie O. Palmer, Edna Y. Rangel, Alberto E. Montalvo, Alexis T. Tran, Kate C. Ferguson, James M. Bullard

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

The Collegian (2013-09-02), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Facile, Green Synthesis Of Large Single Crystal Copper Micro And Nanoparticles With Ascorbic Acid And Gum Arabic, Preston B. Landon, Alexander H. Mo, Carlos T. Ramos, Jose J. Gutierrez, Ratnesh Lal

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Chemistry)

The Collegian (2013-08-26), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

The Einstein@Home Search For Radio Pulsars And Psr J2007+2722 Discovery, B. Allen, B. Knispel, J. M. Cordes, J. S. Deneva, J. W.T. Hessels, D. Anderson, C. Aulbert, O. Bock, Fredrick A. Jenet, Kevin Stovall

Physics & Astronomy Faculty Publications

Timing Of Favorable Conditions, Competition And Fertility Interact To Govern Recruitment Of Invasive Chinese Tallow Tree In Stressful Environments, Christopher A. Gabler, Evan Siemann

School of Earth, Environmental, & Marine Sciences Faculty Publications

Causes, Consequences, And Treatment Of Osteoporosis In Men, Jameela Banu

Health & Biomedical Sciences Faculty Publications

Diffusivity And Sorptivity Of Berea Sandstone Determined Using Neutron Radiography, M. Kang, Chu-Lin Cheng, H. Z. Bilheux, Michael J. Gragg, D. M. Wright, J. M. Lamanna, J. Horita, J. M. Warren

Civil Engineering Faculty Publications

Accuracy Analysis Of Parallel Method Based On Non-Overlapping Domain Decomposition Method, Moonho Tak, Yooseob Song, Hye-Kwan Jeon, Taehyo Park

Civil Engineering Faculty Publications

Traveling Wave Solution To Two-Dimensional Burgers-Korteweg-De Vries Equation, Xiaoqian Gong

Theses and Dissertations - UTB/UTPA

Understanding User Resistance To Information Technology: Toward A Comprehensive Model In Health Information Technology, Madison N. Ngafeeson

Theses and Dissertations - UTB/UTPA

Distributed Sparse Matrix Solver And Pivoting Algorithms For Large Linear Equations, Esteban Torres

Theses and Dissertations - UTB/UTPA

Effects Of Habitat Enrichment On The Stress Level Of The Sit-And-Wait Predator Sand Boa (Gongylophis Colubrinus), Jose Manuel Cantu Martinez

Theses and Dissertations - UTB/UTPA

Synthetic Aperture Radar With Compressed Sensing, Yufeng Cao

Theses and Dissertations - UTB/UTPA

Examine Participant Dropout, Undiagnosed Diabetes And Undiagnosed Prediabetes In A Chronic Disease Prevention Education Program, Yiwen Cao

Theses and Dissertations - UTB/UTPA

On Cubic Multisections, Andrew Alaniz

Theses and Dissertations - UTB/UTPA

Examining The Association Between Personality And Alcohol Use Among Mexican Americans: Acculturation And Gender As Moderators, Miguel A. Reyes

Theses and Dissertations - UTB/UTPA

Lax Pairs For Some Nonlinear Equations, Ana Castillo

Theses and Dissertations - UTB/UTPA

Development Of Hydrodynamic Channel Routing Model Of The Lower Rio Grande River To Assist In Flood And Stormwater Management, Andrew W. Leeper

Theses and Dissertations - UTB/UTPA