Texas A&M University – Corpus Christi
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Open Access Publication Fund Annual Report: 2023 - 2024
No full textThe Open Access Publication Fund at Texas A&M University-Corpus Christi underwrites author publication charges for open access scholarly journal articles, book chapters, and monographs. The fund seeks to encourage greater participation in open access publishing so that Texas A&M University-Corpus Christi’s research is free of subscription barriers, and we support the adoption of open science practices that can help sustain Texas A&M University-Corpus Christi’s status as an R2 Doctoral University. Numerous research studies show that OA publishing increases the visibility of publications, thereby increasing visibility, citations, and the use of faculty research all of which enhance the reputation of TAMU-CC and its faculty.
Major outcomes for 2023 - 2024:
• The Open Access Publication Fund distributed funds for 51 faculty, staff, and graduate students from all 6 colleges as well as the Harte Research Institute for the Gulf of Mexico Studies, the Conrad Blucher Institute, and the Center for Water Supply Studies.
• The Open Access Publication Fund supported the publication fees for 25 articles and one book chapter for a total amount of funding distributed of $52,624.69.Mary and Jeff Bell Library, TAMU-CC
Office of the Provost, TAMU-CC
Division of Research and Innovation, TAMU-C
Ciliary propulsion through non-uniform flows
No full textThe classical paper by Lighthill (Commun. Pure Appl. Maths, vol. 109, 1952, p. 118) on the propulsion of ciliated microorganisms has become the reference against which many modern studies on swimming in low Reynolds number are compared. However, Lighthill’s study was limited to propulsion in a uniform flow, whereas several biologically relevant microorganisms experience non-uniform flows. Here we propose a benchmark for ciliary propulsion in paraboloidal flows. We first consider the axisymmetric problem, with the microorganisms on the centreline of the background flow, and derive exact analytical solutions for the flow field. Our results reveal flow features, swimming characteristics and performance metrics markedly different from those generated in a uniform flow. In particular, the background paraboloidal flow introduces a Stokes quadrupole singularity at the leading-order flow field, generating vortices. Moreover, we determine the necessary conditions on the strength of the background flow for optimal power dissipation and swimming efficiency. We then consider the more general case of a microorganism off the centreline of the background flow. In this case, the squirmer experiences a paraboloidal, linear shear and uniform flows due to its position relative to the flow’s centreline. Our findings show that while the linear shear flow does not affect the translational and rotational velocities of the squirmer, it does influence the velocity field and, therefore, the power dissipation
Kinematics and controlling factors of slow-moving landslides in central Texas: A multisource data fusion approach
No full textThe Austin metropolitan area has experienced unprecedented economic and population growth over the past two decades. This rapid growth is leading communities to settle in areas susceptible to landslides, necessitating a comprehensive analysis of landslide risks and the development of early warning systems. This could be accomplished with better confidence for slow-moving landslides, whose occurrences could be forecasted by monitoring precursory ground displacement. This study employed a combination of ground- and satellite-based observations and techniques to assess the kinematics of slow-moving landslides and identify the controlling and triggering factors that contribute to their occurrence. By closely examining landslide events in the Shoal Creek area, potential failure modes across the study area were inferred. The findings revealed that landslide-prone areas are undergoing creep deformation at an extremely slow rate (up to −4.29 mm/yr). These areas lie on moderate to steep slopes (>22◦) and are predominantly composed of clay-rich units belonging to the Del Rio and Eagle Ford formations. Based on the incidents at Shoal Creek, episodes of intense rainfall acting on the landslide-prone areas are determined to be the main trigger for landslide processes in the region.This research received no external funding
Senator Truan and Governor Dukakis in a crowd
No full textSenator Truan and Governor Dukakis in a crowd of people at a campaign event for Dukakis as Democratic presidental nomine
Abilene bird's eye photo postcard
No full textBirds eye photograph of Abilene, Texas. Caption on back reads: Population 108,000. Established in 1881. Main source of income Agriculture. Military (home of the B-1 Bomber). Oil, gas and education (three colleges)
Evaluating habitat provision by restored intertidal and subtidal oyster reefs in St. Charles Bay, Texas
No full textEstuarine habitats, such as Crassostrea virginica oyster reefs, are critical to the resilience of coastal environments and provide many ecosystem services. To address declining oyster populations, oyster reef restoration has become a widespread management strategy to recover and restore lost ecosystem functions and biodiversity. While traditional restoration practices in Texas have focused on subtidal oyster reefs to ameliorate harvest impacts, there is growing interest in restoring intertidal reefs to maximize habitat benefits. This study evaluates the development of oyster populations and epifaunal communities on concurrently restored intertidal and subtidal oyster reefs in St. Charles Bay, TX, USA. In May 2022, 2.4 ha of oyster reef complex were restored in intertidal (0.5 m depth) and subtidal (1.5 m depth) areas using recycled oyster shells. Epifaunal and oyster dynamics were measured on the restored reefs and nearby natural reference reefs for 12 months (epifauna) and 18 months (oysters) following restoration. Results indicate distinct timelines for oyster population and epifaunal community development: restored subtidal reefs progressed faster, reaching peak oyster densities of 2203 ind. m-2 and similar epifaunal community composition to natural reference within 6 months post- restoration. In contrast, intertidal reefs reached peak oyster densities of 390 ind. m-2 at 12 months post- restoration with dissimilar epifaunal community compositions compared to natural reefs. Spat recruitment to restored intertidal and restored subtidal reefs occurred immediately following restoration, and oysters grew rapidly during the first 3 months, averaging 0.97- 0.95 mm d-1. Submarket size oysters (25- 75 mm) were observed on both restored intertidal and restored subtidal reefs just 1 month after restoration, and market size oysters (≥ 76 mm) occurred on the restored subtidal reefs within 6 months. Large quantities of drift algae were deposited on the restored intertidal reefs in August 2022 and persisted for 4- 6 months, which may have affected oyster and epifaunal recruitment and growth. On restored subtidal reefs, epifaunal densities, biomass, diversity, and community composition became similar to natural reference reefs within 6 months following restoration. On restored intertidal reefs, although epifauna diversity became similar to natural reefs within 12 months, epifaunal community composition remained distinct throughout the 18-month study period. The findings of this study offer important insights into key differences in restored intertidal and subtidal oyster reef development, making it possible to evaluate the ecological tradeoffs of restoration approaches and inform future restoration efforts.Physical and Environmental SciencesCollege of Scienc
COSC 6351.001: Advanced computer architecture
Full text linkAdvanced Computer Architecture COSC 6351.001, Department of Computer Science, Fall 2024: Catalog Course Description: An overview of computer architecture, which stresses the underlying design principles and the impact of these principles on computer performance. General topics include design methodology, processor design, control design, memory organization, system organization, and parallel processing
Are we STEMming the non-STEM? - A three-article dissertation on non-STEM international graduate students
No full textInternational students are an integral part of the higher education system in the United States. While most international students are traditionally enrolled in large public institutions, they are being recruited by regional-serving institutions (RSIs) for their revenue and the diversity they bring to the U.S. campuses. However, the smaller RSIs are unable to offer tailored collegiate support for the transition and development of international graduate students (IGS) like the large public institutions. The IGS enrolled in non-STEM (Science, Technology, Engineering, and Mathematics) fields further lack more customized support in their degree programs, as the STEM IGS receive. This three-article dissertation focuses on non-STEM IGS enrolled at an RSI located in South Texas. Using Schlossberg’s Transition Theory (1981), the first article sought to understand the collegiate experiences of non-STEM IGS. Six participants were recruited for this study, and found that before arriving in the U.S., international graduate students in non-STEM degree programs experienced a lack of support from recruiting agencies and institutions in the admission and application process. After arriving in the U.S., these students were unaware of the campus resources available to them. Findings also revealed that the non-STEM IGS felt alienated and lonely in their program and relied on faculty for support. Providing tailored financial and academic support to the non-STEM IGS at this RSI is recommended. The second article aimed to understand the faculty perspectives of non-STEM IGS at an RSI. Using Astin’s Student Involvement Theory (1984), this phenomenological study recruited 5 faculty members and found that faculty members faced challenges in adequately supporting non-STEM IGS within their programs. The findings indicated a lack of resources and training provided by the RSI, leaving faculty unprepared to address the specific needs of this student demographic, compounded by a perceived lack of familiarity with the unique challenges they face, including visa policies. Providing continued training and resources to the non-STEM faculty is recommended to prepare them to work with IGS in their programs. Using Schlossberg’s Transition Theory (1981) and Oberg’s Culture Shock Theory (1960), the third article utilized a case study approach to examine how the orientation materials support the transition efforts of non-STEM IGS. Publicly accessible institutional webpages, orientation-focused events, graduate student orientation materials, and student and program handbooks were reviewed using a content analysis approach for this study. Findings highlighted a lack of tailored resources and support for the non-STEM IGS in the orientation materials, along with an exclusion of important information pertaining to this student population in the orientation materials that may differ from their domestic counterparts. Ensuring these events offer unique orientation programming and tailored materials to the non-STEM IGS to support their transition efforts as they navigate culture shock, is strongly recommended. This three-article dissertation contributes to the existing literature on IGS in non-STEM degree programs at RSIs and offers practical implications for institutional leaders, faculty, staff, and international students themselves.Educational Leadership, Curriculum & InstructionCollege of Education and Human Developmen
Language policies and Englishes in the United States
No full textThis article provides an overview of language policies governing U.S. Englishes (e.g., African American English, Appalachian English, Hawai’ian (Creole/Pidgin) English, and standard/mainstream American English). Several dominant language ideologies, such as the standard language ideology, strongly shape the language policy context for Englishes in the United States. The domains of educational language policy, workplace language policy, and the legal system are explored—revealing layers of institutionalized, covert policies that acknowledge widespread multilectal practices to varying degrees. Recognition and explicit legitimization of such practices through language policies can mitigate some aspects of linguistic discrimination. However, in the US, legal frameworks bound to categories such as race and national origin as well as those that do not incorporate intra-linguistic variation are obstacles to such interventions
Temporal variation in sulfide intrusion in the seagrass Halodule wrightii
Full text linkSeagrasses are productive ecosystems that form dense meadows in shallow marine waters. Anthropogenic disturbances, particularly nutrient enrichment, have caused the loss of 29% of seagrass meadows in the past century. Sulfide intrusion, a toxic byproduct of microbial processes in sediments, is known to be a significant stressor to seagrasses, leading to reduced photosynthesis, hindered growth, and even die-off. We conducted a nearly year-long study on sulfide intrusion in H. wrightii tissue, measuring d34S and total sulfur values in leaf, rhizome, and root tissues during the summer, fall, and spring seasons. We also investigated the relationship between these intrusion indicators and environmental factors known to affect them, such as sedimentary d34S, porewater H2S, total biomass, total organic content, and iron levels. While the levels of these factors varied across weeks and seasons, we found few significant correlations with intrusion. However, we did observe significant correlations between plant tissue d34S and total sulfur content (Rroots =-0.49, Rrhizome = -0.44), suggesting that sulfide intrusion contributes to total sulfur content in below-ground tissues. In general, it appears that the factors affecting sulfide intrusion are both subtle and complex. By exploring other variables and sampling sites, we may be able to uncover more information about these relationships.Physical and Environmental SciencesCollege of Scienc