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University of Texas Rio Grande Valley

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First Targeted Search For Gravitational-Wave Bursts From Core-Collapse Supernovae In Data Of First-Generation Laser Interferometer Detectors, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, Hernan P. Daveloza, Mario C. Diaz, Joey S. Key, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, Joseph D. Romano Nov 2016

First Targeted Search For Gravitational-Wave Bursts From Core-Collapse Supernovae In Data Of First-Generation Laser Interferometer Detectors, B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, Hernan P. Daveloza, Mario C. Diaz, Joey S. Key, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, Joseph D. Romano

Physics & Astronomy Faculty Publications

We present results from a search for gravitational-wave bursts coincident with two core-collapse supernovae observed optically in 2007 and 2011. We employ data from the Laser Interferometer Gravitational-wave Observatory (LIGO), the Virgo gravitational-wave observatory, and the GEO 600 gravitational-wave observatory. The targeted core-collapse supernovae were selected on the basis of (1) proximity (within approximately 15 Mpc), (2) tightness of observational constraints on the time of core collapse that defines the gravitational-wave search window, and (3) coincident operation of at least two interferometers at the time of core collapse. We find no plausible gravitational-wave candidates. We present the probability of detecting …

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Einstein@ Home Discovery Of A Double Neutron Star Binary In The Palfa Survey, P. Lazarus, P. C.C. Freire, B. Allen, C. Aulbert, O. Bock, S. Bogdanov, A. Brazier, F. Camilo, F. Cardoso, Fredrick Jenet Nov 2016

Einstein@ Home Discovery Of A Double Neutron Star Binary In The Palfa Survey, P. Lazarus, P. C.C. Freire, B. Allen, C. Aulbert, O. Bock, S. Bogdanov, A. Brazier, F. Camilo, F. Cardoso, Fredrick Jenet

Physics & Astronomy Faculty Publications

We use time-domain electromagnetic simulations to determine the spectral characteristics of the Hydrogen Epoch of Reionization Arrays (HERA) antenna. These simulations are part of a multi-faceted campaign to determine the effectiveness of the dish's design for obtaining a detection of redshifted 21 cm emission from the epoch of reionization. Our simulations show the existence of reflections between HERA's suspended feed and its parabolic dish reflector that fall below -40 dB at 150 ns and, for reasonable impedance matches, have a negligible impact on HERA's ability to constrain EoR parameters. It follows that despite the reflections they introduce, dishes are effective …

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Adsorptive And Kinetic Characterization Of Aqueous Zinc Removal By Biochars, Sergio Mireles, Yongsik Ok, Chu-Lin Cheng, James Jihoon Kang Nov 2016

Adsorptive And Kinetic Characterization Of Aqueous Zinc Removal By Biochars, Sergio Mireles, Yongsik Ok, Chu-Lin Cheng, James Jihoon Kang

School of Earth, Environmental, & Marine Sciences Faculty Publications

Biochars have shown a great potential to treat stormwater runoff contaminated with heavy metals due to their favorable physical and chemical characteristics. Biochar materials were produced from pyrolysis of oak tree and wood at 400C and 450C respectively, and their Zn adsorption behavior from aqueous solutions were evaluated to assess their applicability as a filter media for stormwater treatment. Two adsorption isotherm models, Freundlich and Langmuir, were used to fit the batch-scale experimental data. The kinetics of Zn adsorption was investigated under two contrasting physical condition (stagnant vs. agitated). The adsorption isotherm was better fitted with the Langmuir model (R2 …

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Variable Moving Average Transform Stitching Waves, Vesselin Vatchev Nov 2016

Variable Moving Average Transform Stitching Waves, Vesselin Vatchev

School of Mathematical & Statistical Sciences Faculty Publications

A moving average transform in the plane with a variable size and shape window depending on the position and the ’time’ is studied. The main objective is to select the window parameters in such a way that the new transform converges smoothly to the identity transform at the boundary of a prescribed bounded plane region. A new approximation of solitary waves arising from Korteweg-de Vries equation is obtained based on results in the paper. Numerical implementation and examples are included.

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Self-Aligned Carbon Nanotube Yarns For Multifunctional Optoelectronic Applications, Mohammed Uddin, Glenn Grissom, Miguel Leal, Veronica Galvez, Tarek Trad, Ahmed Touhami, Nazmul Islam, Jason Parsons, H. Justin Moore Nov 2016

Self-Aligned Carbon Nanotube Yarns For Multifunctional Optoelectronic Applications, Mohammed Uddin, Glenn Grissom, Miguel Leal, Veronica Galvez, Tarek Trad, Ahmed Touhami, Nazmul Islam, Jason Parsons, H. Justin Moore

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

In this work, the morphology and electrocatalytic features of carbon nanotube yarns at the structural level allow for enhanced photoconversion efficiency. The energy conversion of electronhole pairs within the carbon nanotube yarn (CNY) due to the functionalization with nanostructured photoactive TiO₂ phases is remarkable. A well oriented anatase TiO₂ thin layer (approximately 100 nm) forms at the interfaces of CNY and TiO₂ mesoporous film when the sample is precoated and annealed at 350ºC. Field Emission Scanning Electron Microscopy (FESEM) images show the integrity and homogeneity of the TiO₂ surface, which is indicative of the overall durability of the CNY-based dye …

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The Braking Index Of A Radio-Quiet Gamma-Ray Pulsar, C. J. Clark, H. J. Pletsch, J. Wu, L. Guillemot, F. Camilo, T. J. Johnson, M. Kerr, B. Allen, C. Aulbert, Andres Cuellar Nov 2016

The Braking Index Of A Radio-Quiet Gamma-Ray Pulsar, C. J. Clark, H. J. Pletsch, J. Wu, L. Guillemot, F. Camilo, T. J. Johnson, M. Kerr, B. Allen, C. Aulbert, Andres Cuellar

Physics & Astronomy Faculty Publications

We report the discovery and timing measurements of PSR J1208−6238, a young and highly magnetized gamma-ray pulsar, with a spin period of 440 ms. The pulsar was discovered in gamma-ray photon data from the Fermi Large Area Telescope (LAT) during a blind-search survey of unidentified LAT sources, running on the distributed volunteer computing system Einstein@Home. No radio pulsations were detected in dedicated follow-up searches with the Parkes radio telescope, with a flux density upper limit at 1369 MHz of 30 μJy. By timing this pulsar's gamma-ray pulsations, we measure its braking index over five years of LAT observations …

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The Advanced Ligo Photon Calibrators, S. Karki, Darkhan Tuyenbayev, S. Kandhasamy, B. P. Abbott, T. D. Abbott, E. H. Anders, J. Berliner, J. Betzwieser, C. Cahillane, L. Canete, Volker Quetschke Nov 2016

The Advanced Ligo Photon Calibrators, S. Karki, Darkhan Tuyenbayev, S. Kandhasamy, B. P. Abbott, T. D. Abbott, E. H. Anders, J. Berliner, J. Betzwieser, C. Cahillane, L. Canete, Volker Quetschke

Physics & Astronomy Faculty Publications

The two interferometers of the Laser Interferometry Gravitational-wave Observatory (LIGO) recently detected gravitational waves from the mergers of binary black hole systems. Accurate calibration of the output of these detectors was crucial for the observation of these events and the extraction of parameters of the sources. The principal tools used to calibrate the responses of the second-generation (Advanced) LIGO detectors to gravitational waves are systems based on radiation pressure and referred to as photon calibrators. These systems, which were completely redesigned for Advanced LIGO, include several significant upgrades that enable them to meet the calibration requirements of second-generation gravitational wave …

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Lack Of Association Between Slc30a8 Variants And Type 2 Diabetes In Mexican American Families, Hemant Kulkarni, Manju Mamtani, Juan M. Peralta, Vincent P. Diego, Thomas D. Dyer, Harald H. H. Goring, Laura Almasy, Sarah Williams-Blangero, Michael C. Mahaney, Ravindranath Duggirala, Joanne E. Curran, John Blangero Nov 2016

Lack Of Association Between Slc30a8 Variants And Type 2 Diabetes In Mexican American Families, Hemant Kulkarni, Manju Mamtani, Juan M. Peralta, Vincent P. Diego, Thomas D. Dyer, Harald H. H. Goring, Laura Almasy, Sarah Williams-Blangero, Michael C. Mahaney, Ravindranath Duggirala, Joanne E. Curran, John Blangero

School of Medicine Publications

SLC30A8 encodes zinc transporter 8 which is involved in packaging and release of insulin. Evidence for the association of SLC30A8 variants with type 2 diabetes (T2D) is inconclusive. We interrogated single nucleotide polymorphisms (SNPs) around SLC30A8 for association with T2D in high-risk, pedigreed individuals from extended Mexican American families. This study of 118 SNPs within 50 kb of the SLC30A8 locus tested the association with eight T2D-related traits at four levels: (i) each SNP using measured genotype approach (MGA); (ii) interaction of SNPs with age and sex; (iii) combinations of SNPs using Bayesian Quantitative Trait Nucleotide (BQTN) analyses; and (iv) …

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The Rider (2016-10-31), Jesus Sanchez Oct 2016

The Rider (2016-10-31), Jesus Sanchez

The Rider Archives

Vol.2 No.10

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The Rider (2016-10-10), Jesus Sanchez Oct 2016

The Rider (2016-10-10), Jesus Sanchez

The Rider Archives

Vol.2 No.7

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An Eccentric Binary Millisecond Pulsar With A Helium White Dwarf Companion In The Galactic Field, John Antoniadis, David L. Kaplan, Kevin Stovall, Paulo C.C. Freire, Julia S. Deneva, Detlev Koester, Fredrick Jenet, Jose G. Martinez Oct 2016

An Eccentric Binary Millisecond Pulsar With A Helium White Dwarf Companion In The Galactic Field, John Antoniadis, David L. Kaplan, Kevin Stovall, Paulo C.C. Freire, Julia S. Deneva, Detlev Koester, Fredrick Jenet, Jose G. Martinez

Physics & Astronomy Faculty Publications

Low-mass white dwarfs (LMWDs) are believed to be exclusive products of binary evolution, as the universe is not old enough to produce them from single stars. Because of the strong tidal forces operating during the binary interaction phase, the remnant systems observed today are expected to have negligible eccentricities. Here, we report on the first unambiguous identification of an LMWD in an eccentric (e = 0.13) orbit around the millisecond pulsar PSR J2234+0511, which directly contradicts this picture. We use our spectra and radio-timing solution (derived elsewhere) to infer the WD temperature (Teff = 8600 ±190 K), and peculiar systemic …

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The Rider (2016-10-03), Jesus Sanchez Oct 2016

The Rider (2016-10-03), Jesus Sanchez

The Rider Archives

Vol.2 No.6

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You Can't Get There From Here: Cross-Sector Collaboration And The Common Core State Standards, Jason Depolo, Nancy Gardner Oct 2016

You Can't Get There From Here: Cross-Sector Collaboration And The Common Core State Standards, Jason Depolo, Nancy Gardner

Crosspol Journal

No abstract provided.

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Mapping Student Responses: Towards Alternative Testing Ideologies, Glenn Blalock, Rich Haswell Oct 2016

Mapping Student Responses: Towards Alternative Testing Ideologies, Glenn Blalock, Rich Haswell

Crosspol Journal

No abstract provided.

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Full Issue Vol. 2 No. 1, Crosspol Oct 2016

Full Issue Vol. 2 No. 1, Crosspol

Crosspol Journal

No abstract provided.

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Physical Science Day: Design, Implementation, And Assessment, Liang Zeng, Mark A. Cunningham, Steven C. Tidrow, K. Christopher Smith, Jerry Contreras Oct 2016

Physical Science Day: Design, Implementation, And Assessment, Liang Zeng, Mark A. Cunningham, Steven C. Tidrow, K. Christopher Smith, Jerry Contreras

Physics & Astronomy Faculty Publications

Physical Science Day at The University of Texas–Pan American (UTPA), in collaboration with the Edinburg Consolidated Independent School District, has been designed, developed and implemented to address an identified fundamental shortcoming in our educational process within this primarily (90+%) Hispanic serving border region. Physical Science Day overcomes the lack of knowledge about what physics is by raising youth awareness of physics as the foundation of science, engineering and technology disciplines, through activities including hands-on laboratory experiments, career orientation, and higher educational student and graduated student testimonials. Thus, Physical Science Day encourages, attracts, and enables more Hispanic youth towards science, technology …

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Utrgv Commencement – Fall 2016, The University Of Texas Rio Grande Valley Oct 2016

Utrgv Commencement – Fall 2016, The University Of Texas Rio Grande Valley

UTRGV Commencement Programs

No abstract provided.

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Novel Genetic Loci Underlying Human Intracranial Volume Identified Through Genome-Wide Association, Hieab Hh Adams, Derrek P. Hibar, Vincent Chouraki, Jason L. Stein, Paul A. Nyquist, Miguel E. Rentería, Stella Trompet, John Blangero, Joanne E. Curran, Ravi Duggirala, Harald Hh Goring Oct 2016

Novel Genetic Loci Underlying Human Intracranial Volume Identified Through Genome-Wide Association, Hieab Hh Adams, Derrek P. Hibar, Vincent Chouraki, Jason L. Stein, Paul A. Nyquist, Miguel E. Rentería, Stella Trompet, John Blangero, Joanne E. Curran, Ravi Duggirala, Harald Hh Goring

School of Medicine Publications

Intracranial volume reflects the maximally attained brain size during development, and remains stable with loss of tissue in late life. It is highly heritable, but the underlying genes remain largely undetermined. In a genome-wide association study of 32,438 adults, we discovered five novel loci for intracranial volume and confirmed two known signals. Four of the loci are also associated with adult human stature, but these remained associated with intracranial volume after adjusting for height. We found a high genetic correlation with child head circumference (ρgenetic=0.748), which indicated a similar genetic background and allowed for the identification of four additional loci …

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N-Acetylcysteine In Combination With Igf-1 Enhances Neuroprotection Against Proteasome Dysfunction-Induced Neurotoxicity In Sh-Sy5y Cells, Benxu Cheng, Pinki Anand, Anxiu Kuang, Feroz Akhtar, Virginia L. Scofield Sep 2016

N-Acetylcysteine In Combination With Igf-1 Enhances Neuroprotection Against Proteasome Dysfunction-Induced Neurotoxicity In Sh-Sy5y Cells, Benxu Cheng, Pinki Anand, Anxiu Kuang, Feroz Akhtar, Virginia L. Scofield

School of Medicine Publications

Ubiquitin proteasome system (UPS) dysfunction has been implicated in the development of many neuronal disorders, including Parkinson’s disease (PD). Previous studies focused on individual neuroprotective agents and their respective abilities to prevent neurotoxicity following a variety of toxic insults. However, the effects of the antioxidant N-acetylcysteine (NAC) on proteasome impairment-induced apoptosis have not been well characterized in human neuronal cells. The aim of this study was to determine whether cotreatment of NAC and insulin-like growth factor-1 (IGF-1) efficiently protected against proteasome inhibitor-induced cytotoxicity in SH-SY5Y cells. Our results demonstrate that the proteasome inhibitor, MG132, initiates poly(ADP-ribose) polymerase (PARP) cleavage, caspase …

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The Rider (2016-09-26), Jesus Sanchez Sep 2016

The Rider (2016-09-26), Jesus Sanchez

The Rider Archives

Vol.2 No.5

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The Rider (2016-09-19), Jesus Sanchez Sep 2016

The Rider (2016-09-19), Jesus Sanchez

The Rider Archives

Vol.2 No.4

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Mapping Spatial Distribution And Biomass Of Coastal Wetland Vegetation In Indonesian Papua By Combining Active And Passive Remotely Sensed Data, Aslan Aslan, Abdullah Rahman, Matthew W. Warren, Scott M. Robeson Sep 2016

Mapping Spatial Distribution And Biomass Of Coastal Wetland Vegetation In Indonesian Papua By Combining Active And Passive Remotely Sensed Data, Aslan Aslan, Abdullah Rahman, Matthew W. Warren, Scott M. Robeson

School of Earth, Environmental, & Marine Sciences Faculty Publications

There is ongoing interest to develop remote sensing methods for mapping and monitoring the spatial distribution and biomass of mangroves. In this study, we develop a suite of methods to evaluate the combination of Landsat-8, ALOS PALSAR, and SRTM data for mapping spatial distribution of mangrove composition, canopy height, and aboveground biomass in the wide intertidal zones and coastal plains of Mimika district, Papua, Indonesia. Image segmentation followed by visual interpretation of composite PALSAR images was used to delineate mangrove areas, whereas a flexible statistical rule based classification of spectral signatures from Landsat-8 images was used to classify mangrove associations. …

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Directly Comparing Gw150914 With Numerical Solutions Of Einstein's Equations For Binary Black Hole Coalescence, B. P. Abbott, R. Abbott, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, Joseph D. Romano, Robert Stone, Darkhan Tuyenbayev Sep 2016

Directly Comparing Gw150914 With Numerical Solutions Of Einstein's Equations For Binary Black Hole Coalescence, B. P. Abbott, R. Abbott, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, Joseph D. Romano, Robert Stone, Darkhan Tuyenbayev

Physics & Astronomy Faculty Publications

We compare GW150914 directly to simulations of coalescing binary black holes in full general relativity, including several performed specifically to reproduce this event. Our calculations go beyond existing semianalytic models, because for all simulations - including sources with two independent, precessing spins - we perform comparisons which account for all the spin-weighted quadrupolar modes, and separately which account for all the quadrupolar and octopolar modes. Consistent with the posterior distributions reported by Abbott et al. [Phys. Rev. Lett. 116, 241102 (2016)] (at the 90% credible level), we find the data are compatible with a wide range of nonprecessing and precessing …

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Detection And Localization Of Continuous Gravitational Waves With Pulsar Timing Arrays: The Role Of Pulsar Terms, X. J. Zhu, L. Wen, J. Xiong, Y. Xu, Y. Wang, S. D. Mohanty, G. Hobbs, R. N. Manchester Sep 2016

Detection And Localization Of Continuous Gravitational Waves With Pulsar Timing Arrays: The Role Of Pulsar Terms, X. J. Zhu, L. Wen, J. Xiong, Y. Xu, Y. Wang, S. D. Mohanty, G. Hobbs, R. N. Manchester

Physics & Astronomy Faculty Publications

A pulsar timing array is a Galactic-scale detector of nanohertz gravitational waves (GWs). Its target signals contain two components: the 'Earth term' and the 'pulsar term' corresponding to GWs incident on the Earth and pulsar, respectively. In this work we present a Frequentist method for the detection and localization of continuous waves that takes into account the pulsar term and is significantly faster than existing methods. We investigate the role of pulsar terms by comparing a full-signal search with an Earth-term-only search for non-evolving black hole binaries. By applying the method to synthetic data sets, we find that (i) a …

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Gw150914: First Search For The Electromagnetic Counterpart Of A Gravitational-Wave Event By The Toros Collaboration, Mario C. Diaz, Martin Beroiz, Tania Peñuela, Lucas M. Macri, Ryan J. Oelkers, Wenlong Yuan, Diego García Lambas, Nicolas A. Pereyra, Soma Mukherjee, Matthew Benacquista, Joey Key Sep 2016

Gw150914: First Search For The Electromagnetic Counterpart Of A Gravitational-Wave Event By The Toros Collaboration, Mario C. Diaz, Martin Beroiz, Tania Peñuela, Lucas M. Macri, Ryan J. Oelkers, Wenlong Yuan, Diego García Lambas, Nicolas A. Pereyra, Soma Mukherjee, Matthew Benacquista, Joey Key

Physics & Astronomy Faculty Publications

We present the results of the optical follow-up conducted by the TOROS collaboration of the first gravitational-wave event GW150914. We conducted unfiltered CCD observations (0.35-1 μm) with the 1.5 m telescope at Bosque Alegre starting ∼2.5 days after the alarm. Given our limited field of view (∼100 arcmin2), we targeted 14 nearby galaxies that were observable from the site and were located within the area of higher localization probability. We analyzed the observations using two independent implementations of difference-imaging algorithms, followed by a Random-Forest-based algorithm to discriminate between real and bogus transients. We did not find any bona fide transient …

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Multilocality And Fusion Rules On The Generalized Structure Functions In Two-Dimensional And Three-Dimensional Navier-Stokes Turbulence, Eleftherios Gkioulekas Sep 2016

Multilocality And Fusion Rules On The Generalized Structure Functions In Two-Dimensional And Three-Dimensional Navier-Stokes Turbulence, Eleftherios Gkioulekas

School of Mathematical & Statistical Sciences Faculty Publications

Using the fusion-rules hypothesis for three-dimensional and two-dimensional Navier-Stokes turbulence, we generalize a previous nonperturbative locality proof to multiple applications of the nonlinear interactions operator on generalized structure functions of velocity differences. We call this generalization of nonperturbative locality to multiple applications of the nonlinear interactions operator “multilocality.” The resulting cross terms pose a new challenge requiring a new argument and the introduction of a new fusion rule that takes advantage of rotational symmetry. Our main result is that the fusion-rules hypothesis implies both locality and multilocality in both the IR and UV limits for the downscale energy cascade of …

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The Rider (2016-09-05), Jesus Sanchez Sep 2016

The Rider (2016-09-05), Jesus Sanchez

The Rider Archives

Vol.2 No.2

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Molecular Comparison Of Cattle Fever Ticks From Native And Introduced Ranges, With Insights Into Optimal Search Areas For Classical Biological Control Agents, John A. Goolsby, F. D. Guerrero, John F. Gaskin, K. G. Bendele, P. Azhahianambi, D. Amalin, M. Flores-Cruz, J. Kashefi, Alexis Racelis Sep 2016

Molecular Comparison Of Cattle Fever Ticks From Native And Introduced Ranges, With Insights Into Optimal Search Areas For Classical Biological Control Agents, John A. Goolsby, F. D. Guerrero, John F. Gaskin, K. G. Bendele, P. Azhahianambi, D. Amalin, M. Flores-Cruz, J. Kashefi, Alexis Racelis

School of Earth, Environmental, & Marine Sciences Faculty Publications

Cattle fever ticks, the southern cattle tick, Rhipicephalus microplus (Canestrini), and cattle tick, Rhipicephalus annulatus (Say), are livestock pests endemic to Mexico and invasive along the Texas-Mexico border. Resistance to acaricide, alternate wildlife hosts, and pathogenic landscape-forming weeds present challenges for sustainable eradication of this pest in the U.S. Classical biological control is being explored as a strategy to control cattle fever ticks, especially on alternate hosts such as nilgai antelope, Boselaphus tragocamelus (Pallas), and white-tailed deer, Odocoileus virginianus (Zimmermann). Molecular genetic tools were used to compare populations of cattle fever ticks from native and introduced ranges to provide insights …

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The Late Quaternary Rio Grande Delta—A Distinctive, Underappreciated Geologic System, Thomas E. Ewing, Juan L. Gonzalez Sep 2016

The Late Quaternary Rio Grande Delta—A Distinctive, Underappreciated Geologic System, Thomas E. Ewing, Juan L. Gonzalez

School of Earth, Environmental, & Marine Sciences Faculty Publications

The delta of the Rio Grande/Rio Bravo in southernmost Texas and northern Tamaulipas is one of the major deltas of North America. Over 600,000 people live on the Holocene delta and river plain, and a million more on its Pleistocene ancestors, yet geo-logic knowledge is limited. Combining available geologic information with global satellite photography gives a balanced view of an important delta. The Holocene delta begins at a point west of San Benito, Texas, forming a classic eastward-opening delta. Over half of the delta lies south of the present Rio Grande drainage. The delta passes westward into a floodplain that …

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Open Materials Discourse: Consumer Acceptance Of Personal Cloud: Integrating Trust And Risk With The Technology Acceptance Model, Valerie L. Bartelt, Murad Moqbel Sep 2016

Open Materials Discourse: Consumer Acceptance Of Personal Cloud: Integrating Trust And Risk With The Technology Acceptance Model, Valerie L. Bartelt, Murad Moqbel

Information Systems Faculty Publications

This paper provides the materials used to collect survey data for the conceptual replication of Pavlou (2003) by Moqbel and Bartelt (2015). This replication paper used trust and perceived risk, in addition to the technology acceptance model (TAM) factors of perceived usefulness and perceived ease of use, to determine how consumer’s behavioral intentions affect online transactions (Moqbel & Bartelt, 2015). Two hundred forty participants took part in the 15-minute survey, with the option of choosing either online or paper format. This paper provides additional materials and details on how the survey was conducted. Step-by-step explanations are provided for the design, …

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