• Homogenization of Boundary Layers in the Boltzmann--Poisson System 

  Heitzinger, Clemens; Morales Escalante, José A. (2021)

  We homogenize the Boltzmann--Poisson system where the background medium is given by a periodic permittivity and a periodic charge concentration. The domain is the half-space with a periodic charge concentration on the ...

• An Exploration of CARES Act Funding Policies Affecting Hispanic-Serving Institutions in Texas 

  Sansone, Vanessa A. (2023-05)

  Context: Despite the laudable efforts to tailor federal funding via the Coronavirus Aid, Relief and Economic Security (CARES) Act: Higher Education Emergency Relief Fund (HEERF) in a way that supports underfunded ...

• Flow Characterization of the UTSA Hypersonic Ludwieg Tube 

  Hoffman, Eugene N. A.; LaLonde, Elijah J.; Andrade, Angelina; Chen, Ivana; Bilbo, Hayden A.; Combs, Christopher S. (2023-05-16)

  The characterization of a hypersonic impulse facility is performed using a variety of methods including Pitot probe scans, particle image velocimetry, and schlieren imaging to verify properties such as the velocity, Mach ...

• Phosphates Induced H-Type or J-Type Aggregation of Cationic Porphyrins with Varied Side Chains 

  Li, Zhiliang; Zeman, Charles J.; Valandro, Silvano; Bantang, Jose Paolo O.; Schanze, Kirk S. (2023-05-16)

  Non-covalent interactions have been extensively used to fabricate nanoscale architectures in supramolecular chemistry. However, the biomimetic self-assembly of diverse nanostructures in aqueous solution with reversibility ...

• Stochastic Programming Model Integrating Pyrolysis Byproducts in the Design of Bioenergy Supply Chains 

  Keith, Kolton; Castillo-Villar, Krystel K. (2023-05-13)

  Biomass is an abundant resource for energy production and it has gained attention as a mainstream option to meet increasing energy demands. Pyrolysis has been one of the most prevalent thermochemical processes for biomass ...

• Anaplasma Species in Africa—A Century of Discovery: A Review on Molecular Epidemiology, Genetic Diversity, and Control 

  Kolo, Agatha (2023-05-12)

  Anaplasma species, belonging to the family Anaplasmataceae in the order Rickettsiales, are obligate intracellular bacteria responsible for various tick-borne diseases of veterinary and human significance worldwide. With ...

• Formulation of Impulsive Ecological Systems Using the Conformable Calculus Approach: Qualitative Analysis 

  Martynyuk, Anatoliy; Stamov, Gani; Stamova, Ivanka; Gospodinova, Ekaterina (2023-05-09)

  In this paper, an impulsive conformable fractional Lotka–Volterra model with dispersion is introduced. Since the concept of conformable derivatives avoids some limitations of the classical fractional-order derivatives, it ...

• Fractional-Order Impulsive Delayed Reaction-Diffusion Gene Regulatory Networks: Almost Periodic Solutions 

  Stamov, Trayan; Stamov, Gani; Stamova, Ivanka (2023-05-03)

  The paper is oriented on the existence of almost periodic solutions of factional-order impulsive delayed reaction-diffusion gene regulatory networks. Caputo type fractional-order derivatives and impulsive disturbances at ...

• National Register Eligibility Testing of Ten Sites on Camp Maxey, Lamar County, Texas 

  Kemp, Leonard; Wigley, Sarah; Paige, Jonathan (Archaeological Report;No. 499, 2023-05)

  The Center for Archaeological Research (CAR) at The University of Texas at San Antonio (UTSA) conducted National Register of Historic Places (NRHP) eligibility testing of ten archaeological sites located on Camp Maxey, a ...

• Working beyond borders to cultivate knowledge and support for Puerto Rican colleges and universities: Post-traditional student characteristics, STEM outcomes, and financial context in Puerto Rico 

  Abeyta, Melissa E.; Acevedo, Nancy; Burgos-López, Luz N.; Cammarota, Julio; Labandera, Emily; McNamee, Ty C.; Doran, Erin; Davis, Raeshan D.; Rodriguez Vargas, Lorainne; Perez-Felkner, Lara; Smith, Matthew R.; De Leon Rodriguez, Natasha; Arroyo, Cassandra; Garcia, Nichole M.; Haynes, Gabriele; Kim, Jeongeun; Rubin, Paul; Vega, Blanca Elizabeth (2022)

  To span our knowledge about Puerto Rican higher education, the Association for the Study of Higher Education (ASHE) invited college and university leaders across the Puerto Rican higher education landscape to a day-long ...

• Multicomplex Taylor Series Expansion for Computing High-Order Derivatives 

  Millwater, Harry; Shirinkam, Sara (2014)

  Multicomplex Taylor series expansion (MCTSE) is a numerical method for calculating higher-order partial derivatives of a multivariable real-valued and complex-valued analytic function based on Taylor series expansion without ...

• Minimizing the Discrepancy between Simulated and Historical Failures in Turbine Engines: A Simulation-Based Optimization Method 

  Kibria, Ahmed; Castillo-Villar, Krystel K.; Millwater, Harry (2015-05-18)

  The reliability modeling of a module in a turbine engine requires knowledge of its failure rate, which can be estimated by identifying statistical distributions describing the percentage of failure per component within the ...

• Multidual Sensitivity Method in Ray-Tracing Transport Simulations 

  Balcer, Matthew R.; Millwater, Harry; Favorite, Jeffrey A. (2021-07-01)

  The multidual differentiation method has been implemented in a ray-tracing transport simulation for the purpose of calculating arbitrary-order sensitivities of the uncollided particle leakage. This method extends dual ...

• A complex-variable cohesive finite element subroutine to enable efficient determination of interfacial cohesive material parameters 

  Ramirez-Tamayo, Daniel; Soulami, Ayoub; Gupta, Varun; Restrepo, David; Montoya, Arturo; Millwater, Harry (Engineering Fracture Mechanics;247, 2021-04-15)

  A new complex-variable version of a cohesive element is presented that provides highly accurate first order derivatives of the nodal displacements with respect to the cohesive fracture parameters. These sensitivities are ...

• A complex-variable finite element method-based inverse methodology to extract constitutive parameters using experimental data 

  Ramirez-Tamayo, Daniel; Soulami, Ayoub; Gupta, Varun; Restrepo, David; Montoya, Arturo; Nickerson, Ethan; Roosendaal, Timothy; Simmons, Kevin; Petrossian, Gayaneh; Millwater, Harry (2022-05-15)

  This paper presents the use of full-field kinematic measurements obtained using the digital image correlation (DIC) procedure and load–displacement data to determine constitutive material properties by solving an inverse ...

• Time-dependent Enhanced Corrosion of Ti6Al4V in the Presence of H2O2 and Albumin 

  Zhang, Yue; Addison, Owen; Yu, Fei; Rincon Troconis, Brendy C.; Scully, John R.; Davenport, Alison J. (2018-02-16)

  There is increasing concern regarding the biological consequences of metal release from implants. However, the mechanisms underpinning implant surface degradation, especially in the absence of wear, are often poorly ...

• A block forward substitution method for solving the hypercomplex finite element system of equations 

  Aguirre-Mesa, Andres M.; Garcia, Manuel J.; Aristizabal, Mauricio; Wagner, David; Ramirez-Tamayo, Daniel; Montoya, Arturo; Millwater, Harry (Computer Methods in Applied Mechanics and Engineering;387, 2021-12-15)

  The hypercomplex finite element method, ZFEM, allows the analyst to compute highly-accurate arbitrary-order shape, material property, and loading derivatives by augmenting the traditional finite element method with multiple ...

• Archaeological Monitoring for the Weston Urban Open Space Park, San Antonio, Bexar County, Texas 

  Figueroa, Antonia; Zapata, José E.; McKenzie, Clinton M. M. (Archaeological Report;No. 500, 2023-05)

  The Center for Archaeological Research (CAR) at the University of Texas at San Antonio (UTSA) conducted archaeological monitoring for the Weston Urban Open Space Park in downtown San Antonio, Bexar County, Texas between ...

• Federal-State Partnerships: Why Centering Support for Rural, Regional, and Minority-Serving Institutions Can Improve College Affordability and Student Success in the U.S. 

  Sansone, Vanessa A. (2023-04)

  Since the passage of the Higher Education Act (HEA) of 1965, America’s colleges and universities have struggled to increase the affordability of a college degree. The HEA policy established the creation of need-based grants, ...

• Perceived Family Support Buffers the Impact of PTSD-Depression Symptoms on Suicidal Ideation in College Students 

  Blessing, Alexis; Russell, Patricia; DeBeer, Bryann B.; Morissette, Sandra B. (2023-05-22)

  Students reporting symptoms of posttraumatic stress disorder (PTSD) and depression are at increased risk for suicidal ideation, putting them at greater risk for suicidal behavior and attempts. Perceived social support is ...

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