Digital Commons Network^™

Twitter Sentiment Analysis: Applications In Healthcare And Finance, Jiali Wang

Dissertations

This research explores the influence of Twitter sentiment on healthcare and finance industries. It assesses how Twitter sentiment and culture measure influence COVID-19 statistics, and it investigates the impact of Twitter sentiment on S&P 1500 stock mispricing. Furthermore, it examines how tweet sentiment predicts major industry returns.

The first part examines how Hofstede’s Culture Dimensions (HCD) and Twitter economic uncertainty index (TEU) relate to COVID-19 infection rate and death rate. The results show certain aspects in HCD, such as power distance index (PDI) and masculinity (MAS) both are negatively and significantly associated with the infection rate, while indulgence (IVR) and …

Analyzing Fluctuation Of Topics And Public Sentiment Through Social Media Data, Haoyue Liu

Dissertations

Over the past decade years, Internet users were expending rapidly in the world. They form various online social networks through such Internet platforms as Twitter, Facebook and Instagram. These platforms provide a fast way that helps their users receive and disseminate information and express personal opinions in virtual space. When dealing with massive and chaotic social media data, how to accurately determine what events or concepts users are discussing is an interesting and important problem.

This dissertation work mainly consists of two parts. First, this research pays attention to mining the hidden topics and user interest trend by analyzing real-world …

How System Efficacy Affects Risk Perception: Comparison Of The United States, Iran, And China Throughout The Covid-19 Pandemic, Nazanin Bani Amerian

Dissertations

The current study fills a gap in the risk and health communication literature that deals with perception of risk. The extended parallel process model (EPPM) and associated Risk Behavior Diagnosis Scale lack consideration for attenuated perceptions of risk when people believe that some agent (e.g., government agencies or first responders) will protect them from a hazard. This project’s intention is to establish the validity of a new concept, system efficacy, as an addition to the EPPM model. System efficacy supplements current use of self and response efficacy. In addition, this study tries to investigate how culture affect risk perception by …

Life Matters, Marina Fischer

Dissertations

Problem: One of the challenges facing many primary care providers is managing hypertension. Hypertension contributes to cardiovascular disease events. Consequently, the high occurrence of hypertension related visits signifies a clinical practice gap in hypertension management resulting in substandard blood pressure outcomes. The purpose of this clinical scholarship project was to assess the difference of pre and post Quality of Life Scale (QOLS) scores in a hypertensive population.

Methods: This quality improvement project used a longitudinal, observational design with prospective data collection. The sample included newly diagnosed hypertensive adults ages 21 to 64 years old. The sample was administered the World …

Media Narrative Competition Between The U.S. And China During Covid-19, Zhenzhu Zhang

Dissertations

This study examines the narratives that were presented in Chinese and American media by using Dr. Li Wenliang (one of the first people who tried to raise the alarm about the outbreak of COVID-19), and the COVID-19 origin controversy as case studies to understand how these news stories conflicted and which tellings became dominant. The way these two cases have been depicted in the media has changed over time. Understanding how that depiction changed is important because it helps demonstrate how narratives function to frame crises. The current study uses narrative, and framing theories to support thematic analysis of news …

Towards Practicalization Of Blockchain-Based Decentralized Applications, Songlin He

Dissertations

Blockchain can be defined as an immutable ledger for recording transactions, maintained in a distributed network of mutually untrusting peers. Blockchain technology has been widely applied to various fields beyond its initial usage of cryptocurrency. However, blockchain itself is insufficient to meet all the desired security or efficiency requirements for diversified application scenarios. This dissertation focuses on two core functionalities that blockchain provides, i.e., robust storage and reliable computation. Three concrete application scenarios including Internet of Things (IoT), cybersecurity management (CSM), and peer-to-peer (P2P) content delivery network (CDN) are utilized to elaborate the general design principles for these two main …

Examining The Cross-Cultural Competence Of United States Christian Missionaries Engaged In Developing Indigenous Leaders: A Mixed Methods Study, Craig W. Goodman

Dissertations

For the past two millennia, missionaries have crossed from one culture to another to bring the Christian message to all cultures of the world. Questions about the effectiveness of these mission efforts have been asked and researched by many; however, one key question remains unanswered: what personal attributes help a person to be more competent at crossing cultures as they interact with people from other cultures? Although cross-cultural competence has been studied in a variety of fields over the past 50 years, the models and assessments used have never been applied to Christian missionaries.

To address this deficiency, this parallel …

Digital Equity: Difficulties Of Implementing The 1:1 Computing Initiative In Low-Income Areas, Demetric D. Williams

Dissertations

Successful One-to-One Computing Initiative implementation requires educators to communicate and collaborate effectively with everyone in the learning community. However, other factors such as teacher’s professional development, student’s perception, and parent’s perception often affect the implementation of the One-to-One Computing Initiative. School districts, which serve low-income areas in Mississippi, have difficulties ensuring students and communities have access to the information technology they need to participate outside the school setting. The concept is often called digital equity. However, when officials do not address the capacity, there is a vital threat to the participants’ civic, cultural, employment, lifelong learning, and access to essential …

Phenomenological Study On Leaders With Heart: Examining The Effects Of Heart-Led Leadership With Remote Employees, Aries Sanders

Dissertations

Purpose: The purpose of this qualitative phenomenological study is to examine and describe how exemplary leaders of remote teams lead from the heart, using Mark Crowley’s four principles to accomplish extraordinary results in organizations.

Methodology: This qualitative phenomenological study examines and describes how exemplary leaders of remote teams at Fortune Global 500 companies who lead from the heart using Mark Crowley’s four principles accomplish extraordinary results in an organization. The research study is qualitative. The qualitative method was chosen to describe and understand the lived human experience. The study aims to uncover and explain patterns to make a scholarly contribution …

How Exemplary Female Superintendents In Orange, Riverside, San Bernardino, And San Diego Counties In Southern California Lead From The Heart, Jeanine Wulfenstein

Dissertations

Purpose: The purpose of this phenomenological study was to describe how exemplary female superintendents in Orange, Riverside, San Bernardino, and San Diego counties in Southern California lead from the heart using the four principles of Mark C. Crowley’s work, by demonstrating how they build a highly engaged team, connect on a personal level, maximize employee potential, and value and honor achievement within their organizations.

Methodology: This phenomenological study explored and identified the lived experience of eight California public school superintendents in Orange, Riverside, San Bernardino, and San Diego counties in Southern California. Study participants were selected for interview participation based …