Digital Commons Network^™

Broadband Dielectric Spectroscopic Detection Of Ethanol: A Side-By-Side Comparison Of Zno And Hkust-1 Mofs As Sensing Media, Papa K. Amoah, Zeinab Mohammed Hassan, Pengtao Lin, Engelbert Redel, Helmut Baumgart, Yaw S. Obeng

Electrical & Computer Engineering Faculty Publications

The most common gas sensors are based on chemically induced changes in electrical resistivity and necessarily involve making imperfect electrical contacts to the sensing materials, which introduce errors into the measurements. We leverage thermal- and chemical-induced changes in microwave propagation characteristics (i.e., S-parameters) to compare ZnO and surface-anchored metal-organic-framework (HKUST-1 MOF) thin films as sensing materials for detecting ethanol vapor, a typical volatile organic compound (VOC), at low temperatures. We show that the microwave propagation technique can detect ethanol at relatively low temperatures (<100 >°C), and afford new mechanistic insights that are inaccessible with the traditional dc-resistance-based measurements. In addition, …

Broadband Dielectric Spectroscopic Detection Of Aliphatic Alcohol Vapors With Surface-Mounted Hkust-1 Mofs As Sensing Media, Papa K. Amoah, Zeinab Mohammed Hassan, Rhonda R. Franklin, Helmut Baumgart, Engelbert Redel, Yaw S. Obeng

Electrical & Computer Engineering Faculty Publications

We leveraged chemical-induced changes to microwave signal propagation characteristics (i.e., S-parameters) to characterize the detection of aliphatic alcohol (methanol, ethanol, and 2-propanol) vapors using TCNQ-doped HKUST-1 metal-organic-framework films as the sensing material, at temperatures under 100 °C. We show that the sensitivity of aliphatic alcohol detection depends on the oxidation potential of the analyte, and the impedance of the detection setup depends on the analyte-loading of the sensing medium. The microwaves-based detection technique can also afford new mechanistic insights into VOC detection, with surface-anchored metal-organic frameworks (SURMOFs), which is inaccessible with the traditional coulometric (i.e., resistance-based) measurements.

A Primer On Software Defined Radios, Dimitrie C. Popescu, Rolland Vida

Electrical & Computer Engineering Faculty Publications

The commercial success of cellular phone systems during the late 1980s and early 1990 years heralded the wireless revolution that became apparent at the turn of the 21st century and has led the modern society to a highly interconnected world where ubiquitous connectivity and mobility are enabled by powerful wireless terminals. Software defined radio (SDR) technology has played a major role in accelerating the pace at which wireless capabilities have advanced, in particular over the past 15 years, and SDRs are now at the core of modern wireless communication systems. In this paper we give an overview of SDRs that …

Load Sharing Assessment Of Osseoligamentous Structures Within A Thoracic Spine Segment During Surgical Release, Michael Polanco, James Bennett, Austin Tapp, Michel Audette, Stacie Ringleb, Sebastian Bawab

Electrical & Computer Engineering Faculty Publications

Spinal surgical procedures often require release of intervertebral discs and ligaments to optimally achieve postural correction on a patient-specific basis. In this paper, a T7-T8 Finite Element (FE) model is utilized to examine internal load sharing during resection steps performed in a Ponte osteotomy. The FE model was rotated bidirectionally along three anatomical planes using an externally applied moment. In each step, the Ranges of Motion (RoM), Instantaneous Centers of Rotation (ICR), and forces from ligaments, discs, facet, and costovertebral joints were calculated. The product of each component’s force and the distance between the ICR and their position were used …

Targeting Current And Future Threats: Recent Methodological Trends In Environmental Antimicrobial Resistance Research And Their Relationships To Risk Assessment, Tucker R. Burch, Ryan J. Newton, Lee K. Kimbell, Emily Lou Lamartina, Kassidy N. O'Malley, San Marie Victoria Thomson, Christopher Marshall, Patrick J. Mcnamara

Civil and Environmental Engineering Faculty Research and Publications

Antimicrobial resistance (AMR) is a growing public health threat. Improved surveillance of AMR's genetic indicators in environmental reservoirs should lead to a more comprehensive understanding of the problem at a global scale, as with SARS-CoV-2 monitoring in sewage. However, the “best” monitoring approach is unclear. Some scientific works have emphasized monitoring for the abundance of already-known antimicrobial resistance genes (ARGs); others have emphasized monitoring for the potential of new ARGs to arise. The goal of this study was to examine which methods were employed by highly-cited papers studying AMR in environmental engineering and agricultural systems, thus providing insight into current …

Effect Of Joint Rotation On Curling Responses In Airfield Rigid Pavements, Jaime Hernandez, Imad L. Al-Qadi

Civil and Environmental Engineering Faculty Research and Publications

This paper quantifies the relevance of restriction to joint rotation of an airfield concrete pavement when calculating critical curling stresses and deflections using a validated finite element model. The validation uses strains measured at the John F. Kennedy International Airport. To calculate critical curling stresses and deflections, the pavement was subjected to 5263 h of temperature variation determined by utilising the enhanced integrated climate model and thermocouple readings. The profiles include a wide range of average temperatures, temperature gradients, and temperature nonlinearity. Three conditions were included: (1) joints free to displace and rotate; (2) joints free to rotate, but partially …

Towards Advanced Data Skills For Information Systems Graduates, Ashraf Shirani

Faculty Research, Scholarly, and Creative Activity

This study aims to explore advanced data skills -in particular technical skills expected of a data engineering (DE) professional. Descriptions and requirements for the DE jobs, one each from 50 US companies, were collected from three job sites. An automated text analysis was performed on the job descriptions to extract a list of technical skills and competencies required for the DE job in the industry. The extracted information was then manually synthesized and categorized by the author. Findings of the study are intended to be of use by information systems graduates looking to pursue advanced data education and for curricula …

Can Continuing Legal Education Pass The Test? Empirical Lessons From The Medical World., Rima Sirota

Georgetown Law Faculty Publications and Other Works

Mandatory continuing legal education (CLE) takes millions of hours and hundreds of millions of dollars from American lawyers every year, with the burden landing in disproportionate fashion on new lawyers, public interest lawyers, and solo practitioners. CLE proponents insist that the system protects the public by maintaining lawyer competence. In the forty-five years since the first jurisdictions began requiring CLE, no evidence has emerged in support of this claim.

This Article argues that mandatory CLE is indefensible in its current state. Either the legal profession and the CLE industry must commit to study and change, or it is time to …

Soft Law, Risk Cultures, And Law Abidingness: The Caremark Connection, Donald C. Langevoort

Georgetown Law Faculty Publications and Other Works

As Vice Chancellor, Chancellor, Chief Justice, and recidivist law review author, Leo Strine has had much to say about the often-frustrating effort at corporate behavior modification. One point he makes very insistently is that pursuant to their state-granted charters, corporations are authorized to take part only in lawful business, not any profitable business. Respect for life-giving law is thus a necessary corollary of good corporate citizenship. But good citizenship is so hard to instill, which irks him. An angry display of this is Strine’s Delaware Supreme Court dissenting opinion in City of Birmingham Retirement System v. Good, involving Duke …

Diversifying And Transforming A Public University’S Children’S Book Collection: Librarian And Teacher Education Faculty Collaboration On Grants, Research, And Collection Development, Alison Lehner-Quam

Publications and Research

An education librarian and faculty member collaborated on research grants to study teacher education student’s experiences with diverse books and to develop library collections. This study explores the development of internally grant-funded linguistically and culturally sustaining children’s book collections and assesses the impact of the grants with a model that analyzes research guide use, library instruction sessions, and reflection on grant-funded research, among other components. Intentional collection practices, including grant-funded collection development; faculty partnership; nontraditional bibliographic tools; and alternative forms of access, discovery, and shelving led to a vital and linguistically and culturally sustaining collection which reflects education student’s diverse …

Worth The Time: Exploring The Faculty Experience Of Oer Initiatives, Stacy Katz, Shawna M. Brandle

Publications and Research

Open Educational Resources (OER) initiatives, organized efforts to facilitate the adoption of OER, are increasing in popularity throughout the United States as a means of encouraging faculty to teach with these materials. Faculty participate in these initiatives despite other demands on their time and the lack of recognition for OER usage in the tenure and promotion process. To better understand this phenomenon, the authors conducted in-depth interviews with full-time faculty at senior colleges of the City University of New York (CUNY) and thematically analyzed the transcripts. Faculty were interviewed across colleges, teaching disciplines, and tenure status, yet their experiences with …

Gender Disparities In Covid Deaths, Lisamarie Bennett

Student Publications and Presentations

The public health response to the breakout of COVID-19 requires fundamental changes in individual behavior, such as isolation at home or social distancing. However, the difference in COVID mortality rates between men and women could indicate gender differences in COVID-19 attitudes and behavior. In this study, we used a sample of 512 participants to examine whether there were relationships between gender and degree of adherence to social distancing and quarantining protocols. An independent samples t-Test was conducted to evaluate the hypothesis that men spend fewer days social distancing than women. The test was not significant. Another independent samples t-Test was …

Tyrosine Phosphatase Ptpro Deficiency In Erbb2-Positive Breast Cancer Contributes To Poor Prognosis And Lapatinib Resistance., Hongmei Dong, Liang Du, Songwang Cai, Wan Lin, Chaoying Chen, Matthew Still, Zhimeng Yao, Robert P Coppes, Yunlong Pan, Dianzheng Zhang, Shegan Gao, Hao Zhang

PCOM Scholarly Works

Despite the initial benefit from treating ERBB2-positive breast cancer with tyrosine kinase inhibitor lapatinib, resistance develops inevitably. Since the expression of protein tyrosine phosphatase receptor-type O (PTPRO), a member of the R3 subfamily of receptor protein tyrosine phosphatases (PTPs), is inversely correlated with the aggressiveness of multiple malignancies, we decided to explore the correlation between PTPRO and lapatinib resistance in ERBB2-positive breast cancer. Results of immunohistochemical (IHC) staining and the correlation analysis between the expression levels of PTPRO and the clinicopathological parameters indicate that PTPRO is downregulated in cancer tissues as compared with normal tissues and negatively associated with differentiation, …

Foxo1 Is Present In Stomach Epithelium And Determines Gastric Cell Distribution, Wendy M Mckimpson, Taiyi Kuo, Takumi Kitamoto, Sei Higuchi, Jason C Mills, Rebecca A Haeusler, Domenico Accili

Faculty, Staff and Students Publications

BACKGROUND AND AIMS: Stomach cells can be converted to insulin-producing cells by Neurog3, MafA, and Pdxl over-expression. Enteroendocrine cells can be similarly made to produce insulin by the deletion of FOXO1. Characteristics and functional properties of FOXO1-expressing stomach cells are not known.

METHODS: Using mice bearing a FOXO1-GFP knock-in allele and primary cell cultures, we examined the identity of FOXO1-expressing stomach cells and analyzed their features through loss-of-function studies with red-to-green fluorescent reporters.

RESULTS: FOXO1 localizes to a subset of Neurog3 and parietal cells. FOXO1 deletion ex vivo or in vivo using Neurog3-cre or Atp4b-cre increased numbers of parietal cells, …

Mending Art Classrooms: An Exploration Of The Benefits Of Collaborative Artmaking For Underinvested Black Youth In Richmond, Virginia, Jazmine M. Beatty

Theses and Dissertations

This arts-informed research study explored the experiences of local community artists and educators working to radically transform and heal the experiences of underinvested Black students in Richmond through collaborative arts engagement. Through a series of seven one-on-one interviews with Black teaching artists in the Richmond community, I was able to uncover how collaboration has and can continue to improve the well-being and livelihoods of Black students in Richmond. Also, by tapping into the local Mending Walls mural project, I was able to make a tangible connection between the Richmond community, art, and collaboration. An analysis of the interviews led to …

The Civil Right To Belong: A Case Study On Immigrant Integration Of Muslim Students In Educational Institutions, Mamoona H. Siddiqui

Theses and Dissertations

Constitutional equal protection values serve as social integration policies for new Americans and generations that follow. They promise equal opportunity, fair treatment, protection from unlawful discrimination, and freedom to preserve cultural identities in their new communities. However, in times of national security crises and political polarization, the disjuncture in the way equal protection doctrines have been historically implemented often reflect deep-rooted inequities that impact underrepresented communities. American Muslims are one such community in which members have experienced anti-Muslim and anti-immigrant sentiment particularly after 9/11 and political polarization on immigration and civil rights policies. The study explores the equal protection doctrine …

She: Performing Biography As A Dramatic Narrative, Ashley J. Love

Theses and Dissertations

Abstract

SHE: PERFORMING BIOGRAPHY AS DRAMATIC NARRATIVE

By Ashley Love, Master of Fine Arts at Virginia Commonwealth University

Partial Fulfillment Statement:

Thesis submitted in partial fulfillment of the requirement for a Master of Fine Arts in Theatre Pedagogy at Virginia Commonwealth University.

Director: Dr. Aaron Anderson

Interim Director of Graduate Studies, Theatre Department

Amid the current wave of feminism, women continue to strive for equal ground within societal constructs. Progress is being made in the workplace, the arts, and media presence, but why does it seem that women’s stories of the past continue to be overlooked as if insignificant? This …

Are Pharmacists Up To Speed?: Pharmacy Driven Initiatives, Allison Vargas

All Publications

No abstract provided.

An Analysis Of Air Traffic Controllers’ Job Satisfaction, Sohel M. Imroz, Farhan Sadique, Nidhi Trambadia

Journal of Aviation/Aerospace Education & Research

The air traffic controllers' job is one of the most hectic in today’s world, predominantly due to its safety-critical operations and altering expectations. The primary purpose of this paper is to provide a holistic directory of determinants and synthesized reinforcements for air traffic controllers' job satisfaction. Researchers in the past have put the spotlight on individual air traffic controller’s technical job satisfaction factors, such as impacts from remote tower operation, airplane trajectory changes, and dynamic air traffic situations. However, none described the connection among those factors and how adjusting those factors can enhance the cognitive components related to their job …

Hostos Community College Academic Bulletin 2022-2023, Hostos Community College

College Bulletins

This is the official college catalog for 2022-2023. It contains course descriptions as well as information on degree programs, college resources and services, financial aid, admissions, and the academic calendar.

Alex Birnel, Carly Bagley

Latinx Civil Rights

Alex Birnel shares his experience organizing young voters and helping create the organization MOVE Texas. Birnel also discusses providing voter education to other young voters in the San Antonio area during his time as a college student as well as inviting the local community to participate in civic engagement outside the university campus.

Elisha Carillo, Madeline Emke

Latinx Civil Rights

Elisha Carrillo talks about their motivations for being involved with MOVE Texas and serving as a deputy field organizer. Elisha explains their first interactions with MOVE as a student at St. Mary’s University and finding an interest in voter advocacy through local elections in the area. Elisha discusses their current position working with MOVE Texas in the San Antonio area as the Bexar County Regional Coordinator and organizing community events regarding local elections and voter education.

Charles Cotrell, Analyssa Gracía, Gabriella Parra

Latinx Civil Rights

Dr. Cotrell discusses the motivations for his activist work and the experiences he faced as a professor and community leader. He recalls cases from his time serving as an expert witness in voting rights lawsuits and notes the importance of telling stories of voter intimidation. Dr. Cotrell shares his thoughts on staying proactive in politics, gives advice to young activists, and describes how university faculty can support students in their activism. He also reflects on his personal interests and those that occupied most of his time as a professor.

Claudia Donoso, Juan Ochoa

Latinx Civil Rights

Dr. Donoso discusses a variety of topics centered around immigration. She highlights the immigration process and lack of adequate resources for immigrants while also going into depth about political and economic factors. Dr. Donoso shares both personal and professional perspectives of immigration.

Oscar Lazaro, Ashton Jeffers

Latinx Civil Rights

Oscar Lazaro shares his experience working as a fellow for the Student Voting Network as well as his observations about voting and democracy. He describes how he started his podcast as well as lessons he has learned from producing it. He also details how he addresses difficult topics with others who may disagree with him.

Natalie Marquez, Ashton Jeffers

Latinx Civil Rights

Natalie Marquez explains the work she does for Jolt Action and the ways Jolt is involved in the San Antonio Latinx community. Marquez describes how social and political issues in Texas personally affect her and her family. She also shares how to make voting a cultural norm and practice in the Latinx community.

Meghann Peace, Calie Brame

Latinx Civil Rights

Dr. Peace discusses the process of becoming a volunteer at RAICES and the training she received through the organization. She recounts personal stories about the poor conditions immigrants endured in detention centers. Dr. Peace also explains how RAICES helps people through the legal process of immigration

Amir Samandi, Megan Angelo, Elizabeth Perez

Latinx Civil Rights

Amir Samandi describes his high school experiences including attending a predominately white school as a person of color. He mentions the efforts of teachers who supported him in pursuing higher education. Amir also discusses his undergraduate education at St. Mary’s University and the environment of the community. He then explains how his career led him to create a nonprofit that focuses on young students and how his personal experience connects with the organization's mission.

Assessing Phenotypic Response Of Plants Irrigated With Municipal Solid Waste Landfill Leachate Using Computer Visualization, Rahel Pommerenke

Masters Theses

"Most solid waste collected in the US is disposed of in sanitary landfills, which have a lingering legacy of unintended negative impacts on the environment. Landfill design and operation are expensive, prone to multiple failure modes, and often do not address human and ecological risks presented by contaminants of emerging concern. A notable and common failure mechanism is leachate production. Moisture in the waste mixes with infiltrating water to form wastewater that must be collected and treated prior to discharge. Recycling leachate at landfills by recirculating it onto vegetated landfill covers relies on the evapotranspiration potential of plants to reduce …

Using Internet Reciprocal Teaching To Develop Second Graders' Online Text Evaluation Skills, Annika Buell

Dissertations and Theses @ UNI

This study was designed to explore the relationship between Internet Reciprocal Teaching (IRT) and young students’ online text evaluation skills. It built upon previous research that identified four main online reading comprehension skills: locating, evaluating, synthesizing, and communicating information that are similar yet more complex than offline reading comprehension skills. In the majority of previous research, participants were in fifth grade or above. This study aimed to observe the processes younger students go through while reading online text. Participants were second grade students in a Midwestern suburban elementary school.

Qualitative methods were used to collect data while students participated in …