Digital Commons Network^™

Analysis, Measurement, And Modeling Of Millimeter Wave Channels For Aviation Applications, Zeenat Afroze

Theses and Dissertations

Millimeter wave (mmWave) communication systems can employ a large amount of spectrum, and can consequently offer large data rates, e.g., multi-Gigabits-per-second. This technology can be used in many sectors: aviation, vehicles, public transportation, robotics, autonomous factories, etc. Yet mmWave communication systems suffer from some propagation challenges, including large free space path loss (PL), large penetration loss, and large diffraction loss. Hence, it is vital to quantify these and other channel effects to ensure link reliability. Most mmWave systems will employ directional antennas to enable acceptable link distances. In many settings this will require directional receiver antennas to rotate in azimuth …

Faculty Perceptions Of Readiness And Confidence For Teaching Online: An Evaluation Of Online Professional Development, Kevin Brent Forman

Theses and Dissertations

Regardless of how prepared faculty were to teach online classes, the COVID-19 pandemic forced leaders of universities and colleges and faculty nationwide to pivot to emergency remote teaching and forced students to take online classes. To prepare faculty for the shift to online instruction, administrators in colleges and universities provided resources, such as online trainings, to orient less experienced instructors to principles of online education. The Online Pedagogy Program (OPP) at Midwest Community College was developed quickly in response to the need for urgent training in effective online instruction. After 300 faculty completed the training, an evaluation of the Online …

Implementation Of A 3d Laser Profiler System Into A Non-Contacting Method For Rnt & Stress Measurements, Caio Neto Penna

Theses and Dissertations

Continuous welded rail (CWR) is susceptible to the development of internal forces in the rail due to thermal effects that can lead to track buckling. Railroads typically deal with the internal stresses in the rail through the inspection of the rail neutral temperature (RNT) which is the temperature at which the internal force is zero. The existing methods in the industry to measure RNT are contacting, destructive, disruptive to railroad operations, and ineffective. The proposed concept is a promising non-contacting, non-disruptive and reference-free technique to measure RNT and the stress state in the rail. The method is based on the …

The Effect Of Computer-Based Learning Modules On Pre-Algebra Student Proficiency And Self-Efficacy In Manipulating Math Expressions Involving Negative Signs, Brian Charles Grimm

Theses and Dissertations

Middle school students who need help understanding how to manipulate math expressions involving the negative sign have demonstrated difficulty learning pre-algebra content that prepares them for higher-level math courses. This study involved a multi-media intervention to improve student negative sign proficiency and math self-efficacy. The following research questions were explored: (1) How and to what extent did the computer-based intervention influence students’ math proficiency in manipulating math expressions involving negative signs? (2) How and to what extent did the computer-based intervention influence students’ math self-efficacy in manipulating math expressions involving negative signs? and (3) What were students’ perceptions about the …

Phoneme Stability In Speech Production Of Cognate And Non-Cognate Nouns In A Bilingual With Aphasia, Katherine Vlach

Theses and Dissertations

With the growing bilingual population in the world comes a greater incidence of bilingual aphasia, a communication disorder characterized by expressive or receptive language impairment in one or both of a bilingual speaker’s languages. The cognate facilitation effect, which has greatly been explored in healthy bilingual studies, has shown that cognates are named faster and more accurately than non-cognates; as the cognate facilitation effect is also retained in bilingual speakers with aphasia, it is thought that cognates could potentially be used as a treatment tool to facilitate lexical access, particularly when a bilingual speaker with aphasia presents with one of …

The Moderating Role Of Patient-Centered Culturally Sensitive Health Care On The Relationship Between Health Self-Efficacy And Patient Engagement Among Black American Adults, Kaylyn Ann Garcia

Theses and Dissertations

Black Americans continue to embody strength and resilience in the face of systemic racism and oppression. However, as health disparities experienced by Black Americans continue to widen, it cannot be expected that they be solely responsible to leverage cultural strengths to improve health and well-being in the face of systemic injustice. Instead, it is equally as important to consider the wealth of opportunities that exist for systems, organizations, and policies to dismantle barriers to health and well-being experienced by Black Americans. Therefore, the present study examined the moderating role of patient-centered culturally sensitive health care (PC-CSHC) on the relationship between …

2023 South Carolina Teacher Working Conditions Survey, Angela Starrett, Steve Barth, Ruiqin Gao, Christine Distefano, Jin Liu, Jungsun Go

Reports

The South Carolina Teacher Working Conditions Survey (SCTWCS) was mandated by Act 185 of the 20222023 South Carolina state appropriations to offer better insights into teachers’ workplace satisfaction and working conditions. SC TEACHER designed the SCTWCS to include 11 areas of working conditions (seven resources and four demands) with job satisfaction and intentions to stay in the classroom as outcomes; three areas of mentor support for new teachers (support for teaching, support outside of teaching, and proximity) are included. SCTWCS results provide a clearer understanding of the working conditions for classroom teachers across the state. Findings can be leveraged to …

The Determinants Of Sustained Adherence To Covid-19 Preventive Measures Among Older Syrian Refugees In Lebanon, Nisreen Salti, Stephen J. Mccall, Berthe Abi Zeid, Noura El Salibi, Marwan Alawieh, Zeinab Ramadan, Hala Ghattas Ph.D, Sawsan Abdulrahim

Faculty Publications

Introduction Lebanon has battled the COVID-19 pandemic in the midst of an economic crisis. The evolution of the pandemic and a fragile health system have meant that public health policy has had to rely heavily on non-pharmaceutical interventions for disease control. However, changes in disease dynamics, an unraveling economy, and pandemic fatigue have meant that disease control policies need to be updated. Methods Using recent and timely data on older (50 years and above) Syrian refugees in Lebanon, this paper uses multivariate linear probability models to explore the determinants of adherence to two non-pharmaceutical COVID-19 prevention measures (wearing a mask …

In The Ceo We Trust: Negative Effects Of Trust Between The Board And The Ceo, Kee-Hong Bae, Sadok El Ghoul, Zhaoran (Jason) Gong, Omrane Guedhami

Faculty Publications

In this study, we investigate whether and how trust between board members and the CEO (board–CEO trust) affects the performance of mergers and acquisitions. Contrary to conventional wisdom, we find that firms with higher levels of board–CEO trust exhibit poor M&A performance. High trust is associated with low acquisition announcement returns, long-term stock return performance, and post-deal operating performance. This negative effect of board–CEO trust is more pronounced among acquiring companies prone to agency problems. Our results suggest that, in the institutional setting of corporate boards, high trust can be too much of a good thing.

June 7, 2023 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Model-Driven Analysis Of Ecg Using Reinforcement Learning, Christian O'Reilly, Sai Durga Rithvik Oruganti, Deepa Tilwani, Jessica Bradshaw

Publications

Modeling is essential to better understand the generative mechanisms responsible for experimental observations gathered from complex systems. In this work, we are using such an approach to analyze the electrocardiogram (ECG). We present a systematic framework to decompose ECG signals into sums of overlapping lognormal components. We use reinforcement learning to train a deep neural network to estimate the modeling parameters from an ECG recorded in babies from 1 to 24 months of age. We demonstrate this model-driven approach by showing how the extracted parameters vary with age. From the 751,510 PQRST complexes modeled, 82.7% provided a signal-to-noise ratio that …

Inequalities In Wellbeing In Lebanese Children And Different Refugee Subpopulations: A Multidimensional Child Deprivation Analysis, Zeina Jamaluddine, Gloria Safadi, Alexandra Irani, Nisreen Salti, Jad Chaaban, Sawsan Abdulrahim, Alban Thomas, Hala Ghattas Ph.D.

Faculty Publications

Background and Objectives:

This study constitutes the first attempt to describe the overlapping deprivations faced by Lebanese children (Lebanese) and that of the three sub-populations of refugees living in Lebanon: Palestinian refugees living in Lebanon, Palestinian refugees from Syria and Syrian refugees.

Methods:

Using data from the United Nations International Children's Emergency Fund (UNICEF) Household Survey 2016 (n = 10,555 Lebanese; 7,106 Palestinian refugees living in Lebanon; 2,768 Palestinian refugees from Syria and 5,891 Syrian refugee children aged 2 to 17 years old), we report on single and overlapping deprivations (at least two concurrent deprivations) using indicators related to survival …

A Most Surprising Fern: Serendipity And Browsing In Botanical Search, Douglas Tuers

Journal of the South Carolina Academy of Science

This article is a case study of botanical field work in the eastern United States in the early twentieth century. These cases will be analyzed as instances of browsing and serendipity. Browsing and serendipity have a rich literature in information science and this article will draw on this literature in order to better understand serendipity in botany. This article will show how botanical localities support browsing and serendipity for the botanists who search them. This article will also show how botanical institutions and botanists interface with localities in order to further support browsing and serendipity. As a whole this article …

Protocol For Developing A Personalised Prediction Model For Viral Suppression Among Under-Represented Populations In The Context Of The Covid-19 Pandemic, Jiajia Zhang Ph.D., Xueying Yang Ph.D., Sharon Weissman, Xiaoming Li Ph.D., Bankole Olatosi Ph.D.

Faculty Publications

Introduction Sustained viral suppression, an indicator of long-term treatment success and mortality reduction, is one of four strategic areas of the 'Ending the HIV Epidemic' federal campaign launched in 2019. Under-represented populations, like racial or ethnic minority populations, sexual and gender minority groups, and socioeconomically disadvantaged populations, are disproportionately affected by HIV and experience a more striking virological failure. The COVID-19 pandemic might magnify the risk of incomplete viral suppression among under-represented people living with HIV (PLWH) due to interruptions in healthcare access and other worsened socioeconomic and environmental conditions. However, biomedical research rarely includes under-represented populations, resulting in biased …

Development And Validation Protocol For An Instrument To Measure Household Water Insecurity Across Cultures And Ecologies: The Household Water Insecurity Experiences (Hwise) Scale, Sera L. Young, Shalean M. Collins, Godfred O. Boateng, Torsten B. Neilands, Zeina Jamaluddine, Joshua D. Miller, Alexander A. Brewis, Edward A. Frongillo Jr., Wendy E. Jepson, Hugo Melgar-Quiñonez, Roseanna C. Schuster, Justin B. Stoler, Amber Wuitch, Hwise Research Coordination Network

Faculty Publications

Introduction A wide range of water-related problems contribute to the global burden of disease. Despite the many plausible consequences for health and well-being, there is no validated tool to measure individual- or household-level water insecurity equivalently across varying cultural and ecological settings. Accordingly, we are developing the Household Water Insecurity Experiences (HWISE) Scale to measure household-level water insecurity in multiple contexts.

Methods and analysis After domain specification and item development, items were assessed for both content and face validity. Retained items are being asked in surveys in 28 sites globally in which water-related problems have been reported (eg, shortages, excess …

Socio-Emotional Resilience Among Older Adults During The Covid-19 Pandemic, Cindy J. Lahar, Angela L. Nadeau, Jayne Violette, Summer Roberts, Diana Reindl

Journal of the South Carolina Academy of Science

The detrimental impact of social isolation on health and well-being has been reported in older adults (Prohaska, et al., 2020). Yet findings also demonstrate that older adults have a motivational shift to prioritize emotionally meaningful goals and experiences (Carstensen, 1993; Sakaki, et al., 2019), prioritize emotional meaning in situations, focus on positive emotions and stimuli over negative feelings and live in the present rather than focus on future preparedness. Socioemotional selectivity theory (SST) (Carstensen, 1993; Carstensen, Fung & Charles, 2003) suggests that older adults have a limited sense of time left in life and shift their focus to meaningful and …

Detecting Medication-Taking Gestures Using Machine Learning And Accelerometer Data Collected Via Smartwatch Technology: Instrument Validation Study, Chrisogonas Odero Odhiambo, Lukacs Ablonczy, Pamela J. Wright, Cynthia F. Corbett

Publications

BACKGROUND: Medication adherence is a global public health challenge, as only approximately 50% of people adhere to their medication regimens. Medication reminders have shown promising results in terms of promoting medication adherence. However, practical mechanisms to determine whether a medication has been taken or not, once people are reminded, remain elusive. Emerging smartwatch technology may more objectively, unobtrusively, and automatically detect medication taking than currently available methods. OBJECTIVE: This study aimed to examine the feasibility of detecting natural medication-taking gestures using smartwatches. METHODS: A convenience sample (N=28) was recruited using the snowball sampling method. During data collection, each participant recorded …

Why Understanding Food Choice Is Crucial To Transform Food Systems For Human And Planetary Health, Krystal K. Rampalli, Christine E. Blake Ph.D., Rd, Edward A. Frongillo Ph.D., Joseph Montoya

Faculty Publications

What, how and why people eat has long been understood to be important for human health, but until recently, has not been recognised as an essential facet of climate change and its effects on planetary health. The global climate change and diet-related health crises occurring are connected to food systems, food environments and consumer food choices. Calls to transform food systems for human and planetary health highlight the importance of understanding individual food choice. Understanding what, how and why people eat the way they do is crucial to successful food systems transformations that achieve both human and planetary health goals. …

Analysis Of Genes Responsible For Neuronal Morphological Changes In Down Syndrome Hipsc-Derived Neurons, Juhi Patel

Senior Theses

Down syndrome (DS) is a complex neurodevelopmental disorder caused by the trisomy of chromosome 21. DS is the largest genetic cause of intellectual disability, which occurs in varying severity among affected individuals. It is associated with a variety of developmental and cognitive defects, including reduced brain size, impaired synaptic function, and altered neuronal morphology. A number of genes have been identified to play critical roles in the development and maintenance of neuronal morphology, and alterations in the expression of some of these genes are implicated in the morphological changes observed in DS. Knocking out or altering their expression leads to …

Predictors And Barriers To Vaccination Among Older Syrian Refugees In Lebanon: A Cross-Sectional Analysis Of A Multi-Wave Longitudinal Study, Berthe Abi Zeid, Tanya El Khoury, Hala Ghattas Ph.D., Marwan F. Alawieh, Zeinab Ramadan, Sirine Anouti, Sawsan Abdulrahim, Stephen J. Mccall

Faculty Publications

Background:

Vaccination is important to prevent morbidity and mortality due to COVID-19 among older Syrian refugees. We aimed to elucidate the predictors of COVID-19 vaccine uptake among Syrian refugees aged 50 years or older in Lebanon and to understand their main reasons for not receiving the vaccine.

Methods:

This was a cross-sectional analysis of a five-wave longitudinal study, conducted through telephone interviews between Sept 22, 2020, and March 14, 2022, in Lebanon. For this analysis, data were extracted from wave 3 (Jan 21–April 23, 2021), which included a question on vaccine safety and on whether participants intended to receive the …

Trends In The Incidence Of Head And Neck Cancer: A Nationwide Population-Based Study, Tzong-Hann Yang, Sudha Xirasagar Mbbs., Ph.D., Yen-Fu Cheng, Chin-Shyan Chen, Wei-Pin Chang, Herng-Ching Lin

Publications

OBJECTIVE: This study aimed to demonstrate the temporal trend in incidence of head and neck cancer (HNC) in Taiwan. MATERIALS AND METHODS: Patients with a HNC were retrieved from the Taiwan's Health Insurance Database. We identified 16,894 patients aged ≥20 years who had received a first-time diagnosis of cancer of the oral cavity, oropharynx, larynx, hypopharynx, nasopharynx, sinonasal, salivary gland or thyroid gland between 2010 and 2018. We calculated the annual incidence rate per 100,000 population, overall, and classified by gender and cancer type. We also used the annual percent change (APC) to characterize trends in head and neck cancer …

Predicting Adolescent Intervention Non-Responsiveness For Precision Hiv Prevention Using Machine Learning, Bo Wang, Feifan Liu, Lynette Deveaux, Arlene Ash, Ben Gerber, Jeroan Allison, Carly Herbert, Maxwell Poitier, Karen Macdonell, Xiaoming Li Ph.D., Bonita Stanton

Faculty Publications

Interventions to teach protective behaviors may be differentially effective within an adolescent population. Identifying the characteristics of youth who are less likely to respond to an intervention can guide program modifications to improve its effectiveness. Using comprehensive longitudinal data on adolescent risk behaviors, perceptions, sensation-seeking, peer and family influence, and neighborhood risk factors from 2564 grade 10–12 students in The Bahamas, this study employs machine learning approaches (support vector machines, logistic regression, decision tree, and random forest) to identify important predictors of non-responsiveness for precision prevention. We used 80% of the data to train the models and the rest for …

April 19, 2023 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

The Global Fatty Liver Disease-Sustainable Development Goal Country Score For 195 Countries And Territories, Jeffrey V. Lazarus, Hannah Han, Henry E. Mark, Saleh A. Schattenberg, Jörn M. J., Ismaeel Yunusa Ph. D., Et Al.

Faculty Publications

Background & Aims:

Fatty liver disease is highly prevalent, resulting in overarching wellbeing and economic costs. Addressing it requires comprehensive and coordinated multisectoral action. We developed a fatty liver disease-Sustainable Development Goal (SDG) country score to provide insights into country-level preparedness to address fatty liver disease through a whole-of-society lens.

Approach & Results:

We developed two fatty liver disease-SDG score sets. The first included six indicators (child wasting, child overweight, non-communicable disease [NCD] mortality, universal health coverage service coverage index, health worker density, and education attainment), covering 195 countries between 1990-2017. The second included the aforementioned indicators plus an urban …

The Daily Gamecock: Play It Back, April 2023, University Of South Carolina, Office Of Student Media

April

No abstract provided.

Exploring Digital Interventions To Facilitate Coping And Discomfort For Nurses Experiencing The Menopause In The Workplace: An International Qualitative Study, Camille Cronin, Gemma Bidwell, Janene Carey, Sara Donevant Phd, Rn, Ccrn, Kerri-Ann Hughes, Marja Kaunonen, Jette Marcussen, Rhonda Wilson

Publications

INTRODUCTION: The global nursing workforce is predominantly female, with a large proportion working in the 45-55 age group. Menopause is a transition for all women, and; therefore needs recognition as it can impact work performance and consequently staff turnover. BACKGROUND: Women will go through the menopause, but not all women are affected. The menopause transition presents a range of signs and symptoms both physical and psychological which can impact the quality of life and individuals' work/life balance. The nursing workforce is predominantly women that will work through the menopause transition. OBJECTIVES: The study explored perspectives on digital health interventions as …

April 5, 2023 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Hard Seltzers In Europe: A Sparkling Opportunity? An Analysis Of The Market Potential For Hard Seltzers In Europe, Amanda R. Harper

Senior Theses

This thesis seeks to uncover the potential for the hard seltzer category in the European alcohol market. First, through secondary research, it establishes the conditions of entering the European alcohol market by looking at the challenges of entering markets abroad, the challenges of entering the European market, and the history and current state of alcohol in Europe. Second, this thesis will analyze the history and characteristics of the hard seltzer category. This will include profiles of seven key brands: White Claw, Truly, Bud Light Seltzer, Vizzy, Topo Chico, Mike’s Hard Seltzer, and Pure Piraña. Next, this thesis will analyze primary …

Covid-19 Vaccine Hesitancy And Vaccination Rate Among The Latino Population In South Carolina, Brynn E. Lynagh

Senior Theses

It is common knowledge that COVID-19 disproportionately impacts racial and ethnic minorities in the United States. Furthermore, these sects of the population exhibit increased vaccine hesitancy and lower vaccination rates as compared to the aggregated population of the United States, furthering the risk posed by COVID-19 to these communities. In particular, this study focuses on the Latino population in South Carolina, the vaccination rate among this community, and the perspectives which contributed to their vaccination decision. Two hundred Spanish and Portuguese speaking residents of South Carolina were interviewed using a paper survey conducted by pre-trained interviewers. The survey gathered data …

The Effect Of The Degree Of Authoritative Parenting On Adolescents' Adjustment To College, Elizabeth Smith

Senior Theses

This research aimed to explore how parenting style relates to college students’ adjustment in the first month of college. Authoritative parenting is marked by a standard of maintaining some control, while also promoting children’s autonomy. Previous research has found that authoritative parenting is positively associated with adolescent behavior that is more socially responsible, self-reliant, cheerful, and cooperative. Furthermore, the more support and independence that parents encourage, will in turn breed confidence and academic persistence in adolescent years. I will expand on this research by evaluating whether parenting style also relates to adjustment and mental health outcomes among first year college …