University Of Texas Research Articles

TEC and ROTI Measurements from a New GPS Receiver at BOWEN University, Nigeria

Scintillation and total electron content (TEC) are the two major examples of the top-side ionospheric parameters that are recorded differently by most Global Positioning System (GPS) receivers. The new GPS sensor created by the Atmospheric and Space Technology Research Associates (ASTRA), Cornell University, and the University of Texas, Austin have capability to record scintillation and TEC fluctuations simultaneously. Hence, the Connected Autonomous Space Environment Sensor (CASES) from ASTRA is a software-defined GPS receiver with the dual frequency of L1 C/A and L2C codes for space-weather monitoring and can be remotely programmed via an internet source. The receiver employs numerous novel techniques that make it suitable for space-weather studies compared to other nearby GPS receivers, such as different methods for eliminating local clock effects, an advanced triggering mechanism for determining scintillation onset, data buffering to permit observation of the prelude to scintillation, and data-bit prediction and wipe-off for robust tracking. Moreover, the CASES hardware is made up of a custom-built dual frequency, a digital signal processor board, and a “single board computer” with an ARM microcontroller. We have used the CASES GPS receiver newly installed at Bowen University, Iwo, Nigeria, to investigate the TEC and the rate of the TEC index (ROTI) around the equatorial region. Measurements of the TEC and ROTI showed similar variation trends in monthly, seasonal, and annual periods when compared to TEC and ROTI measurements from a nearby station, BJCO at Cotonou, Benin Republic. The newly installed GPS receiver looks promising for scientific use as it is the only one operational in Nigeria at the moment.

Revising Properties of Planet–Host Binary Systems. III. There Is No Observed Radius Gap for Kepler Planets in Binary Star Systems* * Based on observations obtained with the Hobby–Eberly Telescope, which is a joint project of the University of Texas at Austin, the Pennsylvania State University, Ludwig-Maximilians-Universität München, and Georg-August-Universität Göttingen.

Binary stars are ubiquitous; the majority of solar-type stars exist in binaries. Exoplanet occurrence rate is suppressed in binaries, but some multiples do still host planets. Binaries cause observational biases in planet parameters, with undetected multiplicity causing transiting planets to appear smaller than they truly are. We have analyzed the properties of a sample of 119 planet-host binary stars from the Kepler mission to study the underlying population of planets in binaries that fall in and around the radius valley, which is a demographic feature in period–radius space that marks the transition from predominantly rocky to predominantly gaseous planets. We found no statistically significant evidence for a radius gap for our sample of 122 planets in binaries when assuming that the primary stars are the planet hosts, with a low probability (p < 0.05) of the binary planet sample radius distribution being consistent with the single-star population of small planets via an Anderson–Darling test. These results reveal demographic differences in the planet size distribution between planets in binary and single stars for the first time, showing that stellar multiplicity may fundamentally alter the planet formation process. A larger sample and further assessment of circumprimary versus circumsecondary transits is needed to either validate this nondetection or explore other scenarios, such as a radius gap with a location that is dependent on binary separation.

Religious Transformation in Maya Guatemala: Cultural Collapse and Christian Pentecostal Revitalization

Book Review| March 27 2023 Religious Transformation in Maya Guatemala: Cultural Collapse and Christian Pentecostal Revitalization Religious Transformation in Maya Guatemala: Cultural Collapse and Christian Pentecostal Revitalization. Edited by John P. Hawkins. Santa Fe: School for Advanced Research Press; Albuquerque: University of New Mexico Press, 2021. Photographs. Plates. Maps. Figures. Tables. Notes. Bibliography. Index. xxv, 413 pp. Cloth, $65.00. Virginia Garrard Virginia Garrard University of Texas at Austin Search for other works by this author on: This Site Google Hispanic American Historical Review 10592129. https://doi.org/10.1215/00182168-10592129 Cite Icon Cite Share Icon Share Facebook Twitter LinkedIn MailTo Permissions Search Site Citation Virginia Garrard; Religious Transformation in Maya Guatemala: Cultural Collapse and Christian Pentecostal Revitalization. Hispanic American Historical Review 2023; 10592129. doi: https://doi.org/10.1215/00182168-10592129 Download citation file: Zotero Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search Books & JournalsAll JournalsHispanic American Historical Review Search Advanced Search The text of this article is only available as a PDF. Copyright © 2023 by Duke University Press2023 Article PDF first page preview Close Modal You do not currently have access to this content.

University enters into voluntary resolution agreement

Case name: Letter re: University of Texas, No. 06222063 (OCR 08/22/22).

Measurement of Skin Friction in the University of Texas at Arlington Arcjet

Arcjet flows are known to have significant uncertainties associated with the fundamental flow quantities. A detailed characterization is critical to augment the current understanding of these complex flows as well as developing, screening, and qualifying thermal protection systems. Classically, estimations of skin friction have been made indirectly using heat flux analogies. These techniques, however, are marred by high levels of measurement uncertainty and require a priori assumptions about the flowfield. Directly measuring the wall shear stress removes the demand for these assumptions. A direct measurement of shear stress in supersonic high-enthalpy flow at the Office of Naval Research/University of Texas at Arlington arcjet facility has been conducted. The measured wall shear stress was (average combined calibration uncertainty), which matches well with estimations for laminar flow. Two shear stress sensors separated by a distance of 1.905 cm (0.75 in.) were integrated into a 20 deg half-angle shear-wedge platform. The two sensors tracked together within 10% of each other, implying a uniform flowfield over the region studied. Approximately 1.5 s into the test window, a steady increase in skin friction was observed. The cause of this nonphysically accurate increase in the shear stress measurement is discussed.

Do you love them now? Use and non-use of academic ebooks a decade later

This survey of graduate students' and faculty's use and non-use of ebooks is a follow-up to the data captured in 2011 from the same mid-sized public university in southeast Texas. In addition to providing a change comparison of faculty and graduate students' ebooks usage over the past decade, the study also aims to contribute to the growing ebook literature examining faculty and graduate students' perception and use of ebooks for different academic activities. Survey results showed that while the proportion of respondents who are library ebook users had increased significantly over the past decade, both ebook users and non-users' attitude towards e- and print books remained consistent. Most ebook users appreciated features such as keyword searches and copy and pasting, but the majority also valued the option to print out pages and chapters. Respondents' format preferences also shifted based on their academic needs, although some of the feature limitations that prompted some users to switch from or avoid library ebooks were caused by DRM restrictions that could be removed by publishers. The findings have implications beyond the institution for academic library ebook acquisition and communication with local user populations. Other marketing and future research implications of the findings are also discussed.

Molecular Microbiology, one health, one planet

Molecular Microbiology is seeking original research and review articles for a special section that will focus on the One Health initiative and the Sustainable Development Goals of the United Nations. These initiatives are geared toward increasing scientific knowledge and developing molecular tools to monitor and control microbial activities with an emphasis on helping the global community tackle infectious diseases, promote sustainable agriculture, and protect the environment. To support research communities working at the intersection of microbiology, health, climate, and sustainable research, Molecular Microbiology is introducing a new section called “One Health Microbiology.” This section will cover a broad range of disciplines, including infectious diseases, molecular biology, environmental sciences, biotechnology, immunology, pharmaceutical sciences, food sciences, social sciences, economics, and multidisciplinary sciences. The aim is to provide a holistic view of the field and offer high-quality, interdisciplinary content that meets the highest standards. The journal is now calling for contributions to create an authoritative collection of articles that will present research, concepts, and challenges related to One Health initiatives. The articles should be of interest to a wide audience, address challenging scientific questions, offer biological or mechanistic insights, propose solutions to existing problems, or provide a perspective on the future of the field. While the journal encourages submissions of original research or review articles, all types of articles will be considered. The initial deadline for submission is July 15, 2023, with a secondary target submission date of September 30, 2023. To submit a manuscript to Molecular Microbiology's “One Health Microbiology” section, authors must follow the Author Guidelines and use the journal's online submission system. During the submission process, authors are asked to clearly indicate that their contribution is intended for this section. All submitted manuscripts will be peer-reviewed according to the journal's publishing policies. Accepted articles will be published online without charge. While authors are not required to pay Article Processing Charges (APCs), they have the option to publish their article as open access. If they choose this option, Wiley may cover the APCs through agreements with institutions and funders globally. Section Editors: Neil Gow, University of Exeter, Exeter, United Kingdom Leah Cowen, University of Toronto, Canada Monica Gandhi, University California San Francisco, United States Nicole De Nisco, University Texas Dallas, United States Jacomine Krijnse Locker, Paul Ehrlich Institut, Germany Friedrich Frischknecht, Heidelberg University, Germany Junior Editors: Daniel Fernando Rojas Tapias, Agrosavia, Mosquera, Colombia Michael Neugent, University Texas Dallas, United States

Ethical communication principles anew

Introduction. The article deals with a systematical approach towards organization of a successful communication, based on philosophical and ethical value-oriented assumptions. In order to achieve success in communications it is proposed to use four principles: 1) singularity of consciousness 2) awareness and self-awareness 3) time 4) consent. The proposed approach is compared to the rules, worked out by the professors of the chair for communication of the University of Texas S. Bibi and T. Motet. A synthesis of principles and rules is delivered as a result. Materials and Methods. The following methods of scientific acknowledgement are used to achieve the research objectives: system and comparative analysis, synthesis of Russian and foreign information sources on ethic-related communication principles as well as study of communication critical success factors. Based on comparison of the approaches towards the preparation of a communication act the author attempts to synthesize the list of criteria subject for consideration and planning by the communication participants. Results. As a result of the research the first four initial principles proposed by the author and five rules proposed by S. Bibi and T. Motet a new set of twelve criteria appeared to be considered as a communication control map elements for situations requiring special guarantees of communication quality as, for example, by the dispute parties in situations of conflict of interest during decision of complex issues of diplomacy, trade and state regulation. Discussion and Conclusions. Discussions and conclusions. Adherence to ethical principles and rules of communication can be of particular practical interest in processes of state and commercial governance. From the scientific point of view it is deemed expedient to define the limits of applicability of communicative acts as well as to consider the legal categories coming into play during the application of such principles.

Case of Jekyll and Hub

This is a story about a staff member, a librarian-mentor, and a failure-turned success. It is a story about a learning process to pick the right digital tool during a short affair with digital humanities. In the effort to create a digital annoated bibliography, the librarian-staff collaborators decided to experiment with GitHub and Jekyll, two systems that they were both unfamilar with. The presentation focused on the challenges faced by the collaborators, the lesson they learned, and how the managed to finish the project in a short period of time with the intention to coummincate the importance of sharing failures as well as success at conferences. This script was presented at Digtial Fronties 2019 Conference at the University of Texas at Austin in Austin, TX on September 27, 2019. The original title of this presentation was “GitAnnotated: Creating a Digital Annotated Bibliography on GitHub.”

University enters into voluntary resolution agreement

Case name: Letter re: University of Texas, No. 06222063 (OCR 08/22/22).

Special Issue on the 2022 Fluids Engineering Division Summer Meeting

The ASME Journal of Fluids Engineering (JFE) and the ASME Fluids Engineering Division (FED) present a Special Issue of papers that were presented at the 2022 Fluids Engineering Division Summer Meeting (FEDSM). The FED conference organizers were Professor Philipp Epple (chair) and Professor Kamran Siddiqui (co-chair), whose efforts helped the community assemble in the first in-person FED meeting since the pandemic. The conference was successful due to the hard work and dedication of the conference chairs, technical committee chairs, symposia organizers and other FED volunteers. The 2022 FEDSM was held August 3–5, 2022 at the Intercontinental Toronto Center, Toronto, ON, Canada and included three plenary speakers plus technical presentations and 145 attendees.The Special Issue is pleased to include the review paper by Professor Efstathios (Stathis) Michaelides (Texas Christian University) and Professor Zhigang Feng (University of Texas at San Antonio) titled “Drag Coefficients of Non-spherical and Irregularly-Shaped Particles.” The other paper topics include cardiovascular flow in the aorta, boundary layer response to plasma actuators, thermally stratified turbulent boundary layer flows, flapping foils, and unsteady propulsion.The Special Issue also presents the winners of the Flow Visualization competition, organized by Prof. Philipp Epple. The competition is an initiative that begin in 2017 and was expanded to include both still images and videos. The 2022 FEDSM winners in the video category were:In closing, my sincerest gratitude is extended to JFE Associate Editors, Professor Costanza Aricò, Professor Arindam Banerjee, Professor Luigi P. M. Colombo, Professor Philipp Epple, Professor Pierre Sullivan, and Professor Qianhong Wu, who shared in the responsibilities. I would also like to thank the JFE Editorial Assistant, Ms. Colette Montague, who helped ensure timely processing, and the support of the ASME staff, especially Ms. Beth Darchi, Ms. Erica Hodge, Ms. Tamiko Fung, and Ms. Jenna Seyer. Finally, thank you to our colleagues who served as reviewers and of course the authors.

Dateline 1977: The LHRT as Connective Tissue

Dateline 1977: The LHRT as Connective Tissue

On LHRT’s Seventy-Fifth Anniversary

On LHRT’s Seventy-Fifth Anniversary

The Other Invisible Hand: How Markets—as Institutions—Propagate Conformity and Valuation Errors

The institutionalized status of markets is undoubtedly due to their presumed ability to aggregate individual bids into a single unbiased estimate of value. While not denying this emergent property of market processes, we propose and test an alternative perspective that explains how market processes can also generate the propagation of individual valuation errors that aggregate into price bubbles. Theoretically, we advance a microinstitutional perspective that draws from social and evolutionary psychology linking market processes to a more general process of institutionalization, whereby individuals seeking the adaptive benefits of conformity may—due to bounded and socially biased rationality—instead generate maladaptive individual and collective outcomes. Empirically, we craft an efficient experimental market and find three sets of evidence consistent with our microinstitutionalization perspective. We first show—at the individual level—that market participants exhibit a social bias toward conformity with the market’s collective valuation, even when the emergent market valuation is demonstrably incorrect. We then show—at the market level—that the range of valuations over time also decreases in a conforming direction, again independent of valuation accuracy. Last, we provide the first experimental test of the long-assumed effect of social ambiguity on institutionalization, finding that market participants’ over-attention to the collective valuation is indeed sensitive to variation in social ambiguity. We conclude by highlighting the relevance of our theoretical perspective, method, and findings for future research on institutions and institutionalization processes, as well as future studies on social influence and conformity-based errors.Funding: S. S. Levine acknowledges research grants from Singapore Management University; the University of Texas at Dallas; and the European Research Council (agreement 695256).Supplemental Material: The online appendix is available at https://doi.org/10.1287/stsc.2022.0173 .

:Souvenirs and the Experience of Empire in Ancient Rome

:<i>Souvenirs and the Experience of Empire in Ancient Rome</i>

Systematic analysis of virga and its impact on surface particulate matter observations

Abstract. Studies focusing on virga are rare, even though it is a commonly occurring phenomenon. In this study, we investigated aerosol backscatter profiles from a ceilometer located on The University of Texas at El Paso (UTEP) campus from 2015–2021 to identify virga events. Ceilometer data effectively captured virga events from regular precipitation based on the backscattering intensities. To characterize the virga phenomena, a systematic method was developed using ceilometer profiles, soundings, surface rain gauges, and radar data from the nearest National Weather Service (NWS) site. A total of 50 virga events were identified during the study period. These events appeared only during a specific time of the year, revealing a seasonal occurrence pattern. We identified and classified these virga events and investigated their impact on the surface measurements recorded by the on-campus Continuous Ambient Air Monitoring Station (CAMS). Virga events were classified as columnar and non-columnar events based on their aerosol profiles. We observed that during some of the columnar virga events, surface particulate matter (PM) levels displayed a sudden upward trend indicating aerosol loading in the surface layer after precipitation evaporation. In total, 20 of the virga events showed a columnar structure out of the 50 identified in this study. More detailed analysis of selected events shows that virga affects regional air quality. A significant result of this study is that analysis of sudden changes in local air quality needs to consider the possible effects of virga on the surface layer.

Contributors

Previous articleNext article FreeContributorsPDFPDF PLUSFull Text Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreMiloš Broćić is a Ph.D. candidate from the Department of Sociology at the University of Toronto. His work lies at the intersection of political sociology, culture, and sociological theory. His primary research interests include exploring the social bases of moral conflict and assessing intellectual movements in sociology.Jonah Stuart Brundage is assistant professor of sociology at the University of Michigan. His research interests include historical and comparative sociology, political sociology, economic sociology, and social theory. He is currently writing a book on the role of diplomats and treaty-making in the rise of the British Empire.Kristopher Velasco is assistant professor of sociology at Princeton University. He uses the case of LGBT+ rights to illuminate changes within international organizations, transnational processes, and world culture. Kristopher received his B.A. from the University of Kansas and M.A. and Ph.D. from the University of Texas at Austin.Carly R. Knight is assistant professor of sociology at New York University. She is an economic sociologist with interest in organizations, law, culture, and markets. Her research examines the history of American corporate capitalism and the cultural processes through which economic actors are constructed.Adam Goldstein is assistant professor jointly appointed in the Department of Sociology and the School of Public and International Affairs at Princeton University. His primary research focuses on the social consequences of financial capitalism in the United States. He holds a Ph.D. in sociology from the University of California, Berkeley.Geoffrey T. Wodtke is associate professor of sociology at the University of Chicago and associate director of the Stone Center for Research on Wealth Inequality and Mobility at the Harris School of Public Policy.Ugur Yildirim is a data scientist at Slingshot Finance. He earned his Ph.D. in Sociology from the University of California, Berkeley, in 2020.David J. Harding is professor of sociology at University of California, Berkeley, and the faculty director of the Berkeley D-Lab.Emma Zang, Ph.D., is assistant professor of sociology, biostatistics, and global affairs at Yale University. Her research interests lie at the intersection of health and aging, family demography, and inequality. She is also interested in developing and evaluating statistical methods to model trajectories and life transitions. She has published articles in the top sociology, demography, family, methodology, and health journals.Poh Lin Tan is an assistant professor at the Lee Kuan Yew School of Public Policy, National University of Singapore. Her research focuses on women’s fertility, health and work-life balance in the contexts of extremely low fertility rates in Singapore and Asia, with publications across sociology, demography, economics and social policy journals. She serves as the secretary of the Population Association of Singapore.Philip J. Cook is professor emeritus of public policy and economics at Duke University. His research interests include education, criminal behavior, income inequality, and other topics. Previous articleNext article DetailsFiguresReferencesCited by American Journal of Sociology Volume 128, Number 5March 2023 Article DOIhttps://doi.org/10.1086/725539 © 2023 The University of Chicago. All rights reserved.PDF download Crossref reports no articles citing this article.

Facile Electrochemical Preparation of Hydrophobic Antibacterial Fabrics Using Reduced Graphene Oxide/Silver Nanoparticles

AbstractInvited for this issue's Front Cover are Behnaz Jafari and Prof. Botte from the research group Chemical and Electrochemical Innovation and Technology Laboratory, Texas Tech University in collaboration with Dr. Lacerda from University of Texas at Tyler. The Front Cover shows schematically the in‐situ electrochemical reduction of graphene oxide and electrodeposition of silver nanoparticles on the fabric. The reduced graphene oxide/silver‐coated fabrics demonstrated electroconductivity, hydrophobicity, and antibacterial activity with a controlled release of silver ions which makes their antibacterial effect durable. Read the full text of the Research Article at 10.1002/celc.202201111.

Notes From the Editor

Notes From the Editor Gregory S. Crider The Southeastern Council of Latin American Studies convened 10-12 March 2022 in Charlotte, North Carolina for our Sixty-Ninth Annual Meeting. The conference featured forty panels on a wide variety of topics. Program chair Steven Hyland (Wingate University) saw to the essential tasks of putting panels together in the areas of Literature & Cultural Studies as well as History & Social Sciences. Monica Rankin (University of Texas at Dallas), Jürgen Buchenau (University of North Carolina Charlotte), Steven Hyland (Wingate University) and Gregory Crider (Winthrop University) organized local arrangements for the convention. Freed from many COVID-19 restrictions, attendees were thrilled to meet face-to-face this year after the successful but less personal online meeting in 2021. Centered in the historic Dunhill Hotel in uptown Charlotte, members enjoyed our regular social and networking events, professional development opportunities, and diverse local cultural life. As co-sponsors of the conference, the Consortium in Latin American and Caribbean Studies at the University of North Carolina at Chapel Hill and Duke University and the Consortium of Latin American Studies Programs offered meaningful support and participation. Lou Pérez (UNC), Beatriz Riefkohl-Muñiz (UNC), and Natalie Hartman (Duke) provided critical assistance to the annual meeting. Our collaborators at UNC Press, John McLeod, Kate Stack, and Dylan Stroupe, offered much appreciated backing as well. Now with five years of alliance with the University of North Carolina Press, our readership and exposure continue to grow with inclusion in Project MUSE, an online database of peer-reviewed academic journals and books. The Latin Americanist also continues to partner with the SECOLAS podcast, Historias, which frequently interviews TLA authors and other Latin Americanists from diverse disciplines. The collaboration of these two projects produces opportunities for authors to share their work, advancement of meaningful scholarly engagement, and written and audio resources for classrooms and the public. As always, TLA editors welcome new ideas and suggestions. This volume features some of the best papers from the conference in article format. Eleven of the 150 presenters at the conference submitted revised manuscripts of their papers for publication. Following editorial and peer review and another round of revisions, the five articles published in this issue represent a range of disciplines in both the humanities and social sciences. Graduate assistant Rebekah Ward has played a key role in communicating with authors and organizing and preparing manuscripts for publication. [End Page 6] UNC Charlotte, Winthrop University, and Wingate University, the three SECOLAS host institutions, offer significant financial and institutional support for the publication and success of this journal. In particular, we offer our gratitude to Dr. Nancy Gutierrez, Dean of the College of Liberal Arts and Sciences at UNC Charlotte; to Dr. Takita Sumter, Dean of the College of Arts and Sciences, and the Ellison Capers Palmer, Jr. Professorship of History at Winthrop; and to Dr. Jeff Frederick, Provost at Wingate University, for their continuing encouragement of both The Latin Americanist and SECOLAS. [End Page 7] Copyright © 2023 Southeastern Council on Latin American Studies

The people behind the papers - Junghyun Kim and Sibum Sung.

Plants respond to changes in temperature using complex mechanisms, with decreases in temperature inducing vernalisation and high temperatures causing thermo-morphogenesis. A new paper in Development investigates how VIL1, a PHD finger-containing protein, functions in plants during thermo-morphogenesis. To find out more about this research, we spoke with co-first author of the study, Junghyun Kim, and corresponding author Sibum Sung (Associate Professor of Molecular Bioscience at the University of Texas in Austin, USA). Co-first author Yogendra Bordiya was not available to interview, having now moved to a different sector.