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- Creators: Arizona State University
Description
This research covers the possibility of airports serving as virus scanning hubs for future intercontinental travels. This aims at providing an idea for better control of tackling potential harmful viruses unknowingly carried by travelers. The benefit of this research is to help prevent less blow to the local economy and businesses, help keep travel industries, especially airlines, operating, slow down the rate of infection, and decrease cases and death rates, by providing a more secure health check for incoming and outgoing air travelers.
ContributorsLiu, Shelby (Author) / Feil, Magnus (Thesis advisor) / Mejía, Mauricio (Committee member) / Xian, Xiaojun (Committee member) / Arizona State University (Publisher)
Created2021
Description
In response to the COVID-19 pandemic, countries took serious measures to control its spread and reduce its effect on health, social, and economic aspects. The United Arab Emirates (UAE) has taken unprecedented preventive measures against the spread of COVID-19, including complete lockdowns and the closing of some businesses. Therefore, 27% of companies expected to lose their businesses within a month, while 43% of companies expected to go out of business within six months. This was not only due to the countrywide lockdown, or the impacts caused by the pandemic, but also due to the bad leadership of some leaders during this crisis. There are little of studies and data that discuss the consequences of these decisions on businesses, and it will be helpful to measure the consequences over three years. This study answers the following question: How much did myopic staffing and compensation decisions in the context of COVID-19 affect companies’ performance? To answer this question, I use agent-based modeling (ABM) supported by secondary data to create a simulation to study the consequences of myopic decisions made on employees’ performance in the private sector in the United Arab Emirates starting from the 2020 year and through an anticipated period of 3 years . The study found that under the assumptions that pay deductions, layoffs, and unpaid leaves, are myopic decisions and in the context of the COVID-19 pandemic and its impact on the companies’ performance, there is a huge affect on companies’ performance over the study period which is 3 years.
Keywords: bad leadership, myopic decisions, companies, businesses, COVID-19, agent-based model.
ContributorsAlsaleh, Mohammad (Author) / Trinh, Mai P. (Thesis advisor) / Castillo, Elizabeth (Committee member) / Wallace, L. Marie (Committee member) / Arizona State University (Publisher)
Created2022
Description
The unprecedented amount and sources of information during the COVID-19 pandemic resulted in an indiscriminate level of misinformation that was confusing and compromised healthcare access and delivery. The World Health Organization (WHO) called this an ‘infodemic’, and conspiracy theories and fake news about COVID-19, plagued public health efforts to contain the COVID-19 pandemic. National and international public health priorities expanded to counter misinformation. As a multi-disciplinary study encompassing expertise from public health, informatics, and communication, this research focused on eliciting strategies to better understand and combat misinformation on COVID-19. The study hypotheses is that 1) factors influencing vaccine-acceptance like socio-demographic factors, COVID-19 knowledge, trust in institutions, and media related factors could be leveraged for public health education and intervention; and 2) individuals with a high level of knowledge regarding COVID-19 prevention and control have unique behaviors and practices, like nuanced media literacy and validation skills that could be promoted to improve vaccine acceptance and preventative health behaviors. In this biphasic study an initial survey of 1,498 individuals sampled from Amazon Mechanical Turk (MTurk) assessed socio-demographic factors, an 18-item test of COVID-19 knowledge, trust in healthcare stakeholders, and measures of media literacy and consumption. Subsequently, using the Positive Deviance Framework, a diverse subset of 25 individuals with high COVID-19 knowledge scores were interviewed to identify these deviants’ information and media practices that helped avoid COVID-19 misinformation. Access to primary care, higher educational attainment and living in urban communities were positive socio-demographic predictors of COVID-19 vaccine acceptance emphasizing the need to invest in education and rural health. High COVID-19 knowledge and trust in government and health providers were also critical factors and associated with a higher level of trust in science and credible information sources like the Centers for Disease Control (CDC) and health experts. Positive deviants practiced media literacy skills that emphasized checking sources for scientific basis as well as hidden bias; cross-checking information across multiple sources and verifying health information with scientific experts. These identified information validation and confirmation practices may be useful in educating the public and designing strategies to better protect communities against harmful health misinformation.
ContributorsSivanandam, Shalini (Author) / Doebbeling, Bradley (Thesis advisor) / Koskan, Alexis (Committee member) / Roschke, Kristy (Committee member) / Chung, Yunro (Committee member) / Arizona State University (Publisher)
Created2023
Description
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is the causative pathogen of Coronavirus Disease 2019 (COVID-19). Successful vaccination aims to elicit neutralizing antibodies (NAbs) which inhibit viral infection. Traditional NAb quantification methods (neutralization assays) are labor-intensive and expensive, with limited practicality for routine use (e.g. monitoring vaccination response). Thus, a rapid (10-minute) lateral flow assay (LFA) for quantification of SARS-CoV-2 NAbs was developed. Using the NAb LFA, an 18-month longitudinal study assessing monthly NAb titers was conducted in a cohort of over 500 COVID-19 mRNA vaccine recipients. Three NAb response groups were identified: vaccine strong responders (VSRs), moderate responders (VMRs), and poor responders (VPRs). VSRs generated high and durable NAb titers. VMRs initially generated high NAb titers but showed more rapid waning with time post-vaccination. Finally, VPRs rarely generated NAb titers ≥1:160, even after 3rd dose. Although strong humoral responses correlate with vaccine effectiveness, viral-specific CD4+ and CD8+ T cells are critical for long-term protection. Discordant phenotypes of viral-specific CD8+ and CD4+CXCR5+ T follicular helper (cTfh) cells have recently been associated with differential NAb responses. The second portion of this dissertation was to investigate whether/how SARS-CoV-2 T cell responses differ in individuals with impaired NAb titers following mRNA vaccination. Thus, phenotypic and functional characterization of T cell activation across NAb response groups was conducted. It was hypothesized that VPRs would exhibit discordant SARS-CoV-2 T cell activation and altered cTfh phenotypes. Peripheral blood mononuclear cells were isolated from VPRs, VMRs, VSRs, naturally infected, and normal donors. SARS-CoV-2 responsive T cells were characterized using in vitro activation induced marker assays, multicolor flow cytometry, and multiplex cytokine analysis. Further, CXCR5+ cTfh were examined for chemokine receptor expression (CCR6 and CXCR3). Results demonstrated that despite differential NAb responses, activation of SARS-CoV-2 responsive CD4+ and CD8+ T cells was comparable across NAb groups. However, double-positive CD4+CD8+, CD8low, and activated CD4+CXCR5+CCR6-CXCR3+ (Tfh1-like) T cells were expanded in VPRs compared to VMR and VSRs. Interestingly, a unique population of CD8+CXCR5+ T cells was also expanded in VPRs. These novel findings may aid in identification of individuals with impaired or altered immune responses to COVID-19 mRNA vaccination.
ContributorsRoeder, Alexa Jordan (Author) / Lake, Douglas (Thesis advisor) / McFadden, Grant (Committee member) / Borges Florsheim, Esther (Committee member) / Chang, Yung (Committee member) / Rahman, Masmudur (Committee member) / Arizona State University (Publisher)
Created2023
Description
ABSTRACT
COVID-19 has affected every aspect of society, including the performing arts. This study creates a historic record of the impact of the COVID-19 pandemic on Navy Band Southwest (NBSW), located in San Diego, CA. It is an account of Navy Band Southwest’s journey under my direction as the Bandmaster and the transformation from live music performances to performances in the virtual environment from March 2020 until September 2021. The paper details safety protocols developed by the NBSW leadership team that were implemented following Center for Disease Control and Department of Defense overarching guidance. It also examines the process of development of recording techniques, both audio and video, as well as hardware used to create virtual band performances. Chapters cover NBSW operations pre-COVID, development of the virtual music-making process, and the creation of specific projects, including an original commission for wind band that was conceived, composed, rehearsed, and recorded entirely in a virtual environment. This paper aims to capture the perseverance and professionalism of U. S. Navy Sailors and how these musicians adapted to continue making music during forced isolation and quarantine. An archive of selected performances is included with this document.
ContributorsMansfield, Bruce John (Author) / Caslor, Jason (Thesis advisor) / Edwards, Bradley (Committee member) / Holbrook, Amy (Committee member) / Arizona State University (Publisher)
Created2021
Description
Traditional public health strategies for assessing human behavior, exposure, and activity are considered resource-exhaustive, time-consuming, and expensive, warranting a need for alternative methods to enhance data acquisition and subsequent interventions. This dissertation critically evaluated the use of wastewater-based epidemiology (WBE) as an inclusive and non-invasive tool for conducting near real-time population health assessments. A rigorous literature review was performed to gauge the current landscape of WBE to monitor for biomarkers indicative of diet, as well as exposure to estrogen-mimicking endocrine disrupting (EED) chemicals via route of ingestion. Wastewater-derived measurements of phytoestrogens from August 2017 through July 2019 (n = 156 samples) in a small sewer catchment revealed seasonal patterns, with highest average per capita consumption rates in January through March of each year (2018: 7.0 ± 2.0 mg d-1; 2019: 8.2 ± 2.3 mg d-1) and statistically significant differences (p = 0.01) between fall and winter (3.4 ± 1.2 vs. 6.1 ± 2.9 mg d-1; p ≤ 0.01) and spring and summer (5.6 ± 2.1 vs. 3.4 ± 1.5 mg d-1; p ≤ 0.01). Additional investigations, including a human gut microbial composition analysis of community wastewater, were performed to support a methodological framework for future implementation of WBE to assess population-level dietary behavior. In response to the COVID-19 global pandemic, a high-frequency, high-resolution sample collection approach with public data sharing was implemented throughout the City of Tempe, Arizona, and analyzed for SARS-CoV-2 (E gene) from April 2020 through March 2021 (n = 1,556 samples). Results indicate early warning capability during the first wave (June 2020) compared to newly reported clinical cases (8.5 ± 2.1 days), later transitioning to a slight lagging indicator in December/January 2020-21 (-2.0 ± 1.4 days). A viral hotspot from within a larger catchment area was detected, prompting targeted interventions to successfully mitigate community spread; reinforcing the importance of sample collection within the sewer infrastructure. I conclude that by working in tandem with traditional approaches, WBE can enlighten a comprehensive understanding of population health, with methods and strategies implemented in this work recommended for future expansion to produce timely, actionable data in support of public health.
ContributorsBowes, Devin Ashley (Author) / Halden, Rolf U (Thesis advisor) / Krajmalnik-Brown, Rosa (Thesis advisor) / Conroy-Ben, Otakuye (Committee member) / Varsani, Arvind (Committee member) / Whisner, Corrie (Committee member) / Arizona State University (Publisher)
Created2022
Description
Contact tracing was deployed widely during the COVID-19 pandemic to attempt to stop the spread of SARS Co-V-2. This dissertation investigates the research on contact tracing from a scientometric perspective and looks qualitatively at how case investigators and contact tracers conducted public health practice during the pandemic. Through approaching the public health practice of contact tracing from both a broad, top-down angle, and an on the ground experiential approach, this dissertation provides insight into the issues facing contact tracing as a public health tool.
ContributorsWhite, Alexandra C. (Author) / Jehn, Megan (Thesis advisor) / Hruschka, Daniel (Committee member) / Gaughan, Monica (Committee member) / Arizona State University (Publisher)
Created2022
Description城市商业银行是我国银行业体系中的重要组成部分，在新冠疫情的背景下，本文从对我国商业银行不良贷款的成因进行分析，从新冠疫情前后城商行不良贷款、盈利能力、资本充足性等角度进行比较，总结新冠疫情之后城商行不良贷款规模上升、区域分化、不良处置加大等特征变化。然后，从企业、个人和银行本身等路径全面系统地分析新冠疫情对城商行不良贷款的直接影响，并从“宽信用”、“宽监管”和“宽货币”等政策层面对城商行不良贷款的间接影响机制进行分析。在实证分析上选取2018年一季度至2020年四季度的9个经济指标作为控制变量，分成宏观、行业和银行等三个层次，考虑到数据的可得性，选取20家上市城商行的不良贷款率作为被解释变量，通过建立连续型双重差分模型对新冠疫情对我国城市商业银行不良贷款率的影响进行实证分析，并进行稳定性和影响机制检验，得出了受疫情冲击越严重的地区，经济受影响越明显，因而城商行的不良贷款率增加得越多的结论，而且疫情对城商行不良贷款率且具有连续且时滞性的影响。相比高拨备覆盖率的城市商业银行，疫情更能提高低拨备覆盖率、抵御风险较低的城商行的不良贷款率。选取银行资本充足率作为被解释变量进行了稳健性检验。选取工业增加值和居民人均收入作为渠道变量，进行影响机制检验，结果说明工业增加值和居民人均收入对城商行不良贷款有负向的影响。最后，在理论和实证结果的基础上，对城商行不良贷款处置和有效预防疫情带来不良风险的措施提出相关建议。
ContributorsZhong, Rujian (Author) / Zhang, John (Thesis advisor) / Zhu, Ning (Thesis advisor) / Hu, Jie (Committee member) / Arizona State University (Publisher)
Created2022
Description
As the construction industry in Saudi Arabia was on its way to thriving again. Their growth was due to the unprecedented volume of planned projects such as large-scale and unique projects. Suddenly, the world was faced with one of the most disrupting events in the last century which had a devastating impact on the construction industry specifically. This paper explores mainly the impact of the COVID-19 pandemic on construction projects in Saudi Arabia. Particularly, this paper explores how the pandemic and its related events contributed to the projects' schedule disturbances. This is because most of the projects rely on manpower and supply chains which were heavily disrupted due to the protective measures. For that, a study was conducted to evaluate the impact on the construction projects in Saudi Arabia, to what extent the schedule projects were affected, and what were the main reasons for the schedule delays. The research relied on a field survey and schedule analysis for 12 projects which resulted in identifying several causes of delays and the delayed durations that the projects in Saudi Arabia were facing. This research allows those in construction fields to identify the main causes of delays in order to avoid or minimize the impact of these issues on future projects.
ContributorsObeid, Muhammad Hasan Hani (Author) / Ariaratnam, Samuel (Thesis advisor) / El Asmar, Mounir (Committee member) / Chong, Oswald (Committee member) / Arizona State University (Publisher)
Created2021
Description
The COVID-19 pandemic has greatly impacted the structure of work foremployees worldwide, as many began working remotely in response to national and local
social distancing efforts. These changes occurring amid the transition to remote working
conditions led to the question of how daily stress and daily uplifts occur in this new work
context. For the present thesis study, I explored how internal (i.e., optimism) and external
(i.e., team flow) resources function to moderate the effects of daily hassles and uplifts on
employee well-being (i.e., burnout and professional efficacy) during the COVID-19
pandemic. In a sample of 417 adults at baseline, and 266 at the follow-up, I investigated
how specific resources function to protect employees experiencing occupational burnout.
Additionally, I explored gender differences in these relationships. Study results
demonstrated that both daily uplifts and hassles predicted burnout and professional
efficacy at earlier stages of the pandemic, while at a later stage in the pandemic, the
relationships between daily uplifts and burnout and daily hassles and burnout persisted,
but only daily hassles were associated with professional efficacy. For males at baseline,
higher scores in optimism strengthened the negative relationship between daily uplifts
and burnout. Surprisingly, males with relatively low team flow in work or school settings
seemed to fare better professionally with increased daily hassles. This finding indicates
that males with less collaboration at work thrive as they experience increased daily stress.
While these findings are specific to the COVID-19 context, they may be beneficial for
companies and supervisors seeking to improve employee engagement.
ContributorsO'Brien, Mary (Author) / Mickelson, Kristin D (Thesis advisor) / Hall, Deborah (Committee member) / Luciano, Margaret (Committee member) / Arizona State University (Publisher)
Created2021