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open access

An Examination Of The Variation In Information Systems Project Cost Estimates: The Case Of Year 2000 Compliance Projects

The year 2000 (Y2K) problem presented a fortuitous opportunity to explore the relationship between estimated costs of software projects and five cost influence dimensions described by the Year 2000 Enterprise Cost Model (Kappelman, et al., 1998) -- organization, problem, solution, resources, and stage of completion. This research was a field study survey of (Y2K) project managers in industry, government, and education and part of a joint project that began in 1996 between the University of Nort… more

Date: May 2000

Creator: Fent, Darla

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Three Essays on Social Media: the Effect of Motivation, Participation, and Sentiment on Performance

In recent years, social media has experienced tremendous growth in the number of users. Facebook alone has more than 1.3 billion active users and Twitter has attracted over 600 million active users. Social media has significantly changed the way humans communicate. Many people use social media to keep in touch with family and friends and receive up-to-date information about what happens around the world. Politicians are using social media to support their campaigns. Use of social media is not r… more

Date: August 2015

Creator: Salehan, Mohammad

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

The Information Behavior of Individual Investors in Saudi Arabia

Information plays a significant role in the success of investment strategies. Within a non-advisory context, individual investors elect to build and manage their investment portfolios to avoid the cost of hiring professional advisors. To cope with markets’ uncertainty, individual investors should acquire, understand, and use only relevant information, but that task can be affected by many factors, such as domain knowledge, cognitive and emotional biases, information overload, sources’ credibili… more

Date: May 2016

Creator: Elwani, Nabil Mohammed

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Investigation of the feasibility of non-invasive carbon dioxide detection using spectroscopy in the visible spectrum.

Pulse oximeters are used in operating rooms and recovery rooms as a monitoring device for oxygen in the respiratory system of the patient. The advantage of pulse oximeters over other methods of oxygen monitoring is that they are easy to use and they are non-invasive, which means it is not necessary break the skin to extract blood for information to be obtained. The standard for the measurement of partial pressure of CO2 and O2 is an arterial blood gas analysis (ABG). However routine monitoring … more

Date: December 2007

Creator: Marks, Damian

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

An empirical investigation of the influence of age, gender, and occupational level on stress perceptions, job satisfaction, organizational commitment, and turnover.

This study investigated relationships of age, gender, and supervisor level with job satisfaction, organizational commitment, stress perception, and turnover intention. The demographics were hypothesized to moderate the stress-satisfaction and commitment-turnover relationships. Hypotheses were tested using both parametric and non-parametric bootstrap methods. Subjects were taken from a national survey of 2,663 public sector IT workers. Missing data were imputed using NORM software. Ordinary leas… more

Date: May 2008

Creator: Cordas, Jon D.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

An Investigation of Factors Influencing the User's Social Network Site Continuance Intention

The social network sites (SNS) industry has recently shown an abnormal development pattern: An SNS could rapidly accumulate a large number of users, and then suffer a serious loss of users in a short time, which subsequently leads to the failure of the Web site in the highly competitive market. The user's social network site continuance is considered the most important factor for an SNS to keep its sustainable development. However, little knowledge of the user's SNS continuance raises the follo… more

Date: December 2012

Creator: Han, Bo

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Design for Social Presence and Exploring Its Mediating Effect in Mobile Data Communication Services

The mobility, flexibility, convenience, and ubiquity of mobile data services (MDS) have contributed to their enormous growth and popularity with users. MDS allow users to communicate through mobile texting (mTexting), mobile Instant Messaging (mIM), multimedia messaging services (MMS), and email. A unique feature of MDS that enhances its popularity among its users is the awareness capability, which is revolutionizing the way MDS is being used to communicate today. It allows potential communicat… more

Date: May 2011

Creator: Ogara, Solomon Omondi

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Job embeddedness versus traditional models of voluntary turnover: A test of voluntary turnover prediction.

Voluntary turnover has historically been a problem for today's organizations. Traditional models of turnover continue to be utilized in a number of ways in both academia and industry. A newer model of turnover, job embeddedness, has recently been developed in an attempt to better predict voluntary turnover than existing models. Job embeddedness consists of organizational fit, organizational sacrifice, and organizational links. The purpose of this study is to two fold. First, psychometric analys… more

Date: December 2005

Creator: Besich, John

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Augmented Reality Intentions in Social Networking and Retail Apps

This dissertation contributes to IS research by explaining user intentions while using AR features in mobile social networking and retail app contexts. It consists of three essays, which use partial least squares modeling to analyze different consumer behavior models. The first essay examines the influence of quality, human, and environmental factors on AR reuse intention in a mobile social networking context. The second essay introduces position relevance, a new construct essential to AR resea… more

Date: August 2020

Creator: David, Alsius

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Quantitative Modeling of Healthcare Services and Biodegradable Medical Supplies

This research presents a mathematical model for the transportation and distribution of COVID-19 vaccine, a simulation model for fleet optimization, and a measurement model for "Healthcare 4.0." Essay 1 examines the development of a distribution model using mixed integer programming (MIP) with the objective of maximizing the number of vaccinated individuals, minimizing transportation costs across the entire network, and ensuring widespread access. This research primarily focuses on the distribu… more

This item is restricted from view until August 1, 2028.

Date: July 2023

Creator: Kumar, Abhijeet

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Community-Based Logistics and Supply Chain Management: Developing, Testing and Validating Conceptual Models

The field of Logistics and Supply Chain Management (LSCM) suggests that transactions, collaboration, and value are important in the supply and delivery of products and services to meet the need of impoverished end-consumers. In many cases, the application of LSCM is paramount in most strategic decision-making efforts. Therefore, this research explores the applications of LSCM processes and activities within the community-based context. The methodology used to address the research questions cons… more

Date: May 2016

Creator: Obaze, Yolanda

Item Type: Thesis or Dissertation

Partner: UNT Libraries

A social capital perspective on IT professionals' work behavior and attitude.

Abstract Attracting and developing information technology (IT) professionals is one of the top concerns for companies. Although much research has been conducted about the job behavior and attitudes of IT professionals over the last three decades, findings are inconclusive and contradictory. This suggests that something may be missing in how we examine this phenomenon. Most of this research is drawn from theories of motivation, very little examines the effect of social relationships on IT prof… more

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Date: August 2006

Creator: Zhang, Lixuan

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

A Mixed Methods Approach to Exploring Social Support and Resilience in Coping with Stigma and Psychological Distress among HIV-Positive Adults

Since its emergence in the U.S., HIV has been a stigmatized illness. People living with HIV (PLH) are a minority and prone to psychological distress and poor mental health outcomes due to HIV-related stigma. PLH who identify with another minority group in addition to being HIV-positive (e.g., gay, African-American) experience multiple forms of oppression or layered stigma. Affirmative social support and resilience are negatively associated with HIV-stigma and are important coping resources for … more

Date: August 2017

Creator: Fritz, Sarah-mee Hesse

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

The Evolution of Big Data and Its Business Applications

The arrival of the Big Data era has become a major topic of discussion in many sectors because of the premises of big data utilizations and its impact on decision-making. It is an interdisciplinary issue that has captured the attention of scholars and created new research opportunities in information science, business, heath care, and many others fields. The problem is the Big Data is not well defined, so that there exists confusion in IT what jobs and skill sets are required in big data area. … more

Date: May 2018

Creator: Halwani, Marwah Ahmed

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Information systems success and technology acceptance within a government organization.

Numerous models of IS success and technology acceptance their extensions have been proposed and applied in empirical. This study continues this tradition and extends the body of knowledge on the topic of IS success by developing a more comprehensive model for measuring IS success and technology acceptance within a government organization. The proposed model builds upon three established IS success and technology acceptance frameworks namely the DeLone and McLean (2003), Venkatesh et al.'s (2003… more

Date: August 2008

Creator: Thomas, Patricia

Item Type: Thesis or Dissertation

Partner: UNT Libraries

An Analysis of Information Technology (IT) Post-Adoption Behavior

The primary focus of this research is explicating the role of emotion in IT post-adoption behavior. Studied in the context of intelligent personal assistants (IPA), a class of conversational artificial intelligence (AI), the first study integrates elements from computer science, communications, and IS disciplines. The research identifies two constructs vital for speech-based technologies, natural language understanding, and feedback, and examines their role in use decisions. This work provides… more

Date: August 2020

Creator: Mamun, Md Rasel Al

Item Type: Thesis or Dissertation

Partner: UNT Libraries

The Relationship between Social Isolation and Wellbeing in Older Adults

This dissertation contributes to research on social isolation in older adults aged 65 years and above through three essays that expand our understanding of the social determinants of health and identify the social and interpersonal factors that contribute to elderly wellbeing. This dissertation examines the significant factors contributing to the problem of social isolation, and how the availability of interest-based, low-cost engagement resources in the community can alleviate social isolation… more

Date: August 2020

Creator: Sen, Keya

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Investigating the relationship between the business performance management framework and the Malcolm Baldrige National Quality Award framework.

The business performance management (BPM) framework helps an organization continuously adjust and successfully execute its strategies. BPM helps increase flexibility by providing managers with an early alert about changes and, as a result, allows faster response to such changes. The Malcolm Baldrige National Quality Award (MBNQA) framework provides a basis for self-assessment and a systems perspective for managing an organization's key processes for achieving business results. The MBNQA framewo… more

Date: August 2009

Creator: Hossain, Muhammad Muazzem

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Measurement of Positive Continuance Intention Drivers within a Service Domain

The contribution of this dissertation is how model measurement allows examination of the balance between what is practical in terms of consumer concerns versus what is optimal in terms of cost control. Essay 1 examines a research framework that incorporates various service recovery strategies and simultaneously evaluates their comparative influences. Essay 2 evaluates the complex interrelationships among different factors related to the post-complaint behavioral process. Essay 3 fills a researc… more

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Date: August 2019

Creator: Harun, Md Ahasan Uddin

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Adoption of Wearable Devices by Older Adults

This dissertation is organized in a traditional format while including three essays that address specific research questions. Essay 1 examined the relationship between physical activity and community engagement and their effect on mental well-being among older men and women. Data from National Health and Aging Trends Study (NHATS) from 2018 to 2020 were explored and the posited relationships were tested. This essay provides empirical support that older adults who are reasonably active and invol… more

This item is restricted from view until June 1, 2027.

Date: May 2022

Creator: Enamela, Pranathy

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Stigma and Psychological Quality of Life in People Living with HIV: Self-Esteem as a Mediating Factor

Although the negative impact of HIV stigma is well documented, a gap exists in exploration of constructs that mediate the relationship between HIV stigma and psychological QOL (PQOL). Self-esteem is often conceptualized as a protective factor. We used PLS-SEM to explore the relationships between HIV stigma, PQOL and self-esteem, where PQOL and self-esteem are latent constructs represented by direct observations. Our hypotheses were supported - stigma is negatively related to self-esteem (as mea… more

Date: August 2017

Creator: Wike, Alexandra

Item Type: Thesis or Dissertation

Partner: UNT Libraries

A Quantitative Approach to Understand Cyberbullying

After more than two decades, bullying and cyberbullying is still negatively impacting the lives of many of our youth and their families. The prevalence of the phenomenon is widespread and part of the everyday life activities. The impact of cyber aggression and violation can have severe consequences, up to the destruction of lives. While cyberbullying prevention programs exist, not much progress seems to have been made in the effort to combat the phenomenon. This research provides new insights i… more

Date: August 2021

Creator: Stegmair, Juergen Georg

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Globally Distributed Agile Teams: An Exploratory Study of the Dimensions Contributing to Successful Team Configuration

Drawing upon configurational theory, work group design research, virtualness concepts, and the software agility literature, the purpose of this study was to provide a starting point for theorizing about the successful configuration of globally distributed agile teams by exploring the dimensions of team structure, virtualness, and agility. Due to the complex nature of this topic, the need to examine the phenomenon within its natural setting, and the limited amount of research that has been cond… more

Date: December 2008

Creator: Sharp, Jason H.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Anger, Forgiveness and Mindfulness: Correlates of Perceived Stress in an LGB Sample

A sexual minority is someone who identifies as lesbian, gay or bisexual (LGB). According to the Minority Stress Model (Meyer, 2003), sexual minorities encounter significant levels of stress due to their minority group status, thus they are more likely to experience perceived stress. Our cross-sectional, correlational study aimed to explore the relationships between forgiveness, mindfulness and anger and how they are related to perceived stress in a convenience sample of ethnically diverse LGB a… more

Date: December 2015

Creator: Schumacher, Matthew Robert

Item Type: Thesis or Dissertation

Partner: UNT Libraries