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USF Tampa Graduate Theses and Dissertations

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Fighting Mass Diffusion Of Fake News On Social Media, Abdallah Musmar Nov 2021

Fighting Mass Diffusion Of Fake News On Social Media, Abdallah Musmar

USF Tampa Graduate Theses and Dissertations

Fake news has been considered one of the most challenging problems in the last few years. The effects of spreading fake news over social media platforms are widely observed across the globe as the depth and velocity of fake news reach far more than real news (Vosoughi et al., 2018). The plan for the following dissertation is to investigate the mass spread of fake news across social media and propose a framework to fight the spread of fake news by mixing preventive methods that could hinder the overall percentage of fake news sharing. We plan to create a study on …


Constructing Frameworks For Task-Optimized Visualizations, Ghulam Jilani Abdul Rahim Quadri Oct 2021

Constructing Frameworks For Task-Optimized Visualizations, Ghulam Jilani Abdul Rahim Quadri

USF Tampa Graduate Theses and Dissertations

Visualization is crucial in today’s data-driven world to augment and enhance human understanding and decision-making. Effective visualizations must support accuracy in visual task performance and expressive data communication. Effective visualization design depends on the visual channels used, chart types, or visual tasks. However, design choices and visual judgment are co-related, and effectiveness is not one-dimensional, leading to a significant need to understand the intersection of these factors to create optimized visualizations. Hence, constructing frameworks that consider both design decisions and the task being performed enables optimizing visualization design to maximize efficacy. This dissertation describes experiments, techniques, and user studies to …


Designing Targeted Mobile Advertising Campaigns, Kimia Keshanian Jun 2021

Designing Targeted Mobile Advertising Campaigns, Kimia Keshanian

USF Tampa Graduate Theses and Dissertations

With the proliferation of smart, handheld devices, there has been a multifold increase in the ability of firms to target and engage with customers through mobile advertising. Therefore, not surprisingly, mobile advertising campaigns have become an integral aspect of firms’ brand building activities, such as improving the awareness and overall visibility of firms' brands. In addition, retailers are increasingly using mobile advertising for targeted promotional activities that increase in-store visits and eventual sales conversions. However, in recent years, mobile or in general online advertising campaigns have been facing one major challenge and one major threat that can negatively impact the …


Gao Bid Protests By Small Business: Analysis Of Perceived And Reported Outcomes In Federal Contracting, David M. Snyder Apr 2021

Gao Bid Protests By Small Business: Analysis Of Perceived And Reported Outcomes In Federal Contracting, David M. Snyder

USF Tampa Graduate Theses and Dissertations

The purpose of this research is to better understand GAO bid protest outcomes, if they are perceived as effective by stakeholders particularly small businesses, and what implications perceptions of outcomes have for small businesses. As a small business owner in the U.S. Federal government contracting space, the rationale for this research improves my business’s performance and inform other small business practitioners of the practical utility of GAO protests. The GAO protest system is well intended American innovation in accountability of government agencies’ acquisition of supplies and services.

The GAO reports protest outcome rates are reflected as moderately effective at approximately …


Impact Of Health It On Practice Of Medicine, Deepti Singh Mar 2021

Impact Of Health It On Practice Of Medicine, Deepti Singh

USF Tampa Graduate Theses and Dissertations

This dissertation focuses on three key facets of health IT impact on the practice of medicine: (1) Clinical impact on practitioner outcomes through malpractice claims, (2) Socio-economic impact on patient outcomes through the clinical treatment of social determinants of health (SDOH), and (3) Organizational impact on Long-Term Post-Acute Care (LTPAC) Facilities. The first dissertation essay (Chapter 1) investigates the impact of Health IT on the nature and severity of malpractice claims reported in Florida from 2009-2016. The essay empirically examines the treatment effect of federal initiatives, specifically the Meaningful Use program, on medical practitioners enrolled in the Medicare program and …


Self-Protection In Cyberspace: Assessing The Processual Relationship Between Thoughtfully Reflective Decision Making, Protection Motivation Theory, Cyber Hygiene, And Victimization, C. Jordan Howell Mar 2021

Self-Protection In Cyberspace: Assessing The Processual Relationship Between Thoughtfully Reflective Decision Making, Protection Motivation Theory, Cyber Hygiene, And Victimization, C. Jordan Howell

USF Tampa Graduate Theses and Dissertations

The current study, using structural equation modeling, assesses the processual relationship between thoughtfully reflective decision making (TRDM), theoretical constructs derived from protection motivation theory (PMT), cyber hygiene, and online victimization to determine the cognitive decision-making process that leads to the adoption of online self-protective behaviors, which reduces the occurrence of victimization experiences. Findings, derived from a general sample of Internet users in the United States, reveal: (1) engagement in cyber hygiene practices, as a form of target hardening, decreases Internet users’ experiences with online victimization; (2) thoughtfully reflective decision makers, in the face of cyber threats, develop higher threat appraisals …


Multimodal Data Fusion And Attack Detection In Recommender Systems, Mehmet Aktukmak Nov 2020

Multimodal Data Fusion And Attack Detection In Recommender Systems, Mehmet Aktukmak

USF Tampa Graduate Theses and Dissertations

The commercial platforms that use recommender systems can collect relevant information to produce useful recommendations to the platform users. However, these sources usually contain missing values, imbalanced and heterogeneous data, and noisy observations. Such characteristics render the process of exploiting the information nontrivial, as one should carefully address them during the data fusion process. In addition to the degenerative characteristics, some entries can be fake, i.e., they can be the outcomes of malicious intents to manipulate the system. These entries should be eliminated before incorporation to any recommendation task. Detecting such malicious attacks quickly and accurately and then mitigating them …


Digital Identity: A Human-Centered Risk Awareness Study, Toufic N. Chebib Nov 2020

Digital Identity: A Human-Centered Risk Awareness Study, Toufic N. Chebib

USF Tampa Graduate Theses and Dissertations

Cybersecurity threats and compromises have been at the epicenter of media attention; their risk and effect on people’s digital identity is something not to be taken lightly. Though cyber threats have affected a great number of people in all age groups, this study focuses on 55 to 75-year-olds, as this age group is close to retirement or already retired. Therefore, a notable compromise impacting their digital identity can have a major impact on their life.

To help guide this study, the following research question was formulated, “What are the risk perceptions of individuals, between the ages of 55 and 75 …


Analysis Of Malicious Behavior On Social Media Platforms Using Agent-Based Modeling, Agnieszka Anna Onuchowska Mar 2020

Analysis Of Malicious Behavior On Social Media Platforms Using Agent-Based Modeling, Agnieszka Anna Onuchowska

USF Tampa Graduate Theses and Dissertations

The following dissertation focuses on the problem of malicious accounts actions on social media. The dissertation proposes an artifact in a form of an agent-based model of Twitter network. The model is then deployed to investigate a policy intervention that aims at controlling malicious behavior on social media outlets. The main research question is: How can we best intervene in social networks to minimize the effects of malicious actors? The dissertation consists of four studies that are organized as follows. First study is designed as an exploratory investigation that deploys descriptive analysis and unsupervised methods to analyze the types of …


Managing Decision-Making Bias In Erp Use By Smes, Connie L. Kahler Nov 2018

Managing Decision-Making Bias In Erp Use By Smes, Connie L. Kahler

USF Tampa Graduate Theses and Dissertations

The purpose of this study is to examine the use of ERP and outputs by six decision-makers in one SME manufacturing organization and provide artifacts targeted to improve their pricing decisions. Through elaborated action design research, we collect data to diagnosis decision-makers concerns and identify decision making biases and errors. Using insights and collaboration, we design, implement and evaluate seven artifacts targeted to minimize four biases identified – overconfidence bias, optimistic bias, planning fallacy and representativeness.

The data collected during the diagnosis phase reveals that concerns fell into three primary themes: data, human interfaces, and cognitive bias. The seven combined …


Defining Data Science And Data Scientist, Dana M. Dedge Parks Oct 2017

Defining Data Science And Data Scientist, Dana M. Dedge Parks

USF Tampa Graduate Theses and Dissertations

The world’s data sets are growing exponentially every day due to the large number of devices generating data residue across the multitude of global data centers. What to do with the massive data stores, how to manage them and defining who are performing these tasks has not been adequately defined and agreed upon by academics and practitioners. Data science is a cross disciplinary, amalgam of skills, techniques and tools which allow business organizations to identify trends and build assumptions which lead to key decisions. It is in an evolutionary state as new technologies with capabilities are still being developed and …


Crashapp™ –Concurrent Multiple Stakeholder Evaluation Of A Dsr Artefact, Timothy M. Papp Sep 2017

Crashapp™ –Concurrent Multiple Stakeholder Evaluation Of A Dsr Artefact, Timothy M. Papp

USF Tampa Graduate Theses and Dissertations

The successful design, implementation, deployment, and use of mobile software applications is rare. While many mobile apps are developed, few succeed. This design science research project builds and evaluates CrashApp™, a mobile application that connects lawyers and clients before, during, and after car accidents. The effective, widespread use of this app depends on satisfying the needs of three groups of stakeholders – the end-users (clients), the owners (lawyers), and the software developers. The research objective is to investigate the key differences among the three stakeholder groups on evaluation criteria for mobile app success. Evaluation strategies and methods are selected to …


An Information And Communication Technologies For Development (Ict4d) Decision Framework For Building An Information Economy In Developing Countries: The Case Of Palestine, Hasan Nuseibeh Jul 2016

An Information And Communication Technologies For Development (Ict4d) Decision Framework For Building An Information Economy In Developing Countries: The Case Of Palestine, Hasan Nuseibeh

USF Tampa Graduate Theses and Dissertations

Building a thriving information economy is a goal for many developing countries. This research helps identify the factors (inhibitors and motivators) that can be used to leverage the Information and Communication Technology (ICT) sector in a developing country to build a sustainable information economy that benefits other sectors of the economy. This is done by studying the current literature on this topic and then synthesizing the theoretical models to create a unified decision framework to help developing countries set their path to building a sustainable information economy.

Drawing on past literature and extant theory, a novel ICT4D decision framework is …


Reframing The Academic Research Library In The U.S.: Perceptions Of Change From Library Leaders, Victoria L. Stuart Nov 2015

Reframing The Academic Research Library In The U.S.: Perceptions Of Change From Library Leaders, Victoria L. Stuart

USF Tampa Graduate Theses and Dissertations

During the past five years (2010-2015), U.S. universities experienced a simultaneous downturn in financial support along with rapid changes in technology and increased demand for accountability. Academic libraries, among the most central and visible units in the university system, were often at the forefront of financial cutbacks and increased pressure to demonstrate both unit effectiveness and closer alignment with the overall institutional mission. Little research existed to document academic libraries’ changes during this volatile period in history, or how the role of the academic library as part of the university system evolved during this period. Through interviews with the library …


A Study On The Integration Of Multivariate Metocean, Ocean Circulation, And Trajectory Modeling Data With Static Geographic Information Systems For Better Marine Resources Management And Protection During Coastal Oil Spill Response – A Case Study And Gap Analysis On Northeastern Gulf Of Mexico Tidal Inlets, Richard Ray Knudsen Nov 2015

A Study On The Integration Of Multivariate Metocean, Ocean Circulation, And Trajectory Modeling Data With Static Geographic Information Systems For Better Marine Resources Management And Protection During Coastal Oil Spill Response – A Case Study And Gap Analysis On Northeastern Gulf Of Mexico Tidal Inlets, Richard Ray Knudsen

USF Tampa Graduate Theses and Dissertations

The Oil Pollution Act of 1990 requires the development of Regional and Area Contingency Plans. For more than 20 years, the State of Florida, under both the Department of Environmental Protection and the Florida Fish and Wildlife Commission, has worked closely with the U.S. Coast Guard and the National Oceanic and Atmospheric Administration to develop these plans for coastal and marine oil spill response. Current plans, developed with local, state and federal stakeholder input, use geographic information systems (GIS) data such as location and extent of sensitive ecological, wildlife, and human-use features (termed Environmental Sensitivity Index data), pre-defined protection priorities, …


Inter-Organizational Social Network Information Systems: Diagnosing And Design, Matthew T. Mullarkey Jun 2014

Inter-Organizational Social Network Information Systems: Diagnosing And Design, Matthew T. Mullarkey

USF Tampa Graduate Theses and Dissertations

While IS research into on-line Inter-Personal (IP) Social Networks (SN) is highly visible, there has been surprisingly little focus on the use of on-line social networks for Inter-Organizational (IO) communications, interactions, and goal achievement. We explore the issues and challenges facing organizations in their design and use of inter-organizational social network information systems (IO SNIS). Artifact design principles are drawn from a new and insightful model that contrasts the advantages of existing innovative inter-personal (IP) SNIS artifacts with Social Network Theory on differences between IP and IO Social Networks. This research extends the existing streams of IS social networking research …


Applications Of Agent Based Approaches In Business: A Three Essay Dissertation, Shankar Prawesh Jan 2013

Applications Of Agent Based Approaches In Business: A Three Essay Dissertation, Shankar Prawesh

USF Tampa Graduate Theses and Dissertations

The goal of this dissertation is to investigate the enabling role that agent based simulation plays in business and policy. The aforementioned issue has been addressed in this dissertation through three distinct, but related essays. The first essay is a literature review of different research applications of agent based simulation in various business disciplines, such as finance, economics, information systems, management, marketing and accounting. Various agent based simulation tools to develop computational models are discussed. The second essay uses an agent-based simulation approach to study important properties of the widely used most popular news recommender systems (NRS). This essay highlights …


School Library Media Specialists' Perceptions Of Collaboration, Leadership And Technology, Jozan Maria Powell Jan 2013

School Library Media Specialists' Perceptions Of Collaboration, Leadership And Technology, Jozan Maria Powell

USF Tampa Graduate Theses and Dissertations

School impact media studies indicate that a well-staffed and funded school library media program with a certified school library media specialist (SLMS) positively correlates with increased student achievement. SLMS must have a shared understanding of their roles and responsibilities to positively impact student success. In an effort to determine prior knowledge and differentiated learning objectives, the method of certification is critical for planning professional development. This dissertation presents a multi-method investigation of differences between Alternatively Certified (AC) and Traditionally Certified (TC) SLMS as it relates to their perceptions of collaboration, leadership and technology described in Information Power: Building Partnerships for …


Learning And Relevance In Information Retrieval: A Study In The Application Of Exploration And User Knowledge To Enhance Performance, Harvey Stuart Hyman Jul 2012

Learning And Relevance In Information Retrieval: A Study In The Application Of Exploration And User Knowledge To Enhance Performance, Harvey Stuart Hyman

USF Tampa Graduate Theses and Dissertations

This dissertation examines the impact of exploration and learning upon eDiscovery information retrieval; it is written in three parts. Part I contains foundational concepts and background on the topics of information retrieval and eDiscovery. This part informs the reader about the research frameworks, methodologies, data collection, and instruments that guide this dissertation.

Part II contains the foundation, development and detailed findings of Study One, "The Relationship of Exploration with Knowledge Acquisition." This part of the dissertation reports on experiments designed to measure user exploration of a randomly selected subset of a corpus and its relationship with performance in the information …


Economic Culture And Trading Behaviors In Information Markets, Khalid Nasser Alhayyan Jan 2012

Economic Culture And Trading Behaviors In Information Markets, Khalid Nasser Alhayyan

USF Tampa Graduate Theses and Dissertations

There are four main components for influencing traders' behaviors in an information market context: trader characteristics, organizational characteristics, market design, and external information. This dissertation focuses on investigating the impact of individual trader characteristics on trading behaviors. Two newly-developed constructs, highly relevant to information market contexts, were identified to increase our understanding about trading behaviors: trader's economic culture and trader independence. The theory of planned behavior is used as the theoretical basis to postulate hypotheses for empirical testing. Data collected from subjects through a series of web-based experiments shows that trader participation can be fostered through recruiting individuals who are …


Tagline: Information Extraction For Semi-Structured Text Elements In Medical Progress Notes, Dezon K. Finch Jan 2012

Tagline: Information Extraction For Semi-Structured Text Elements In Medical Progress Notes, Dezon K. Finch

USF Tampa Graduate Theses and Dissertations

Text analysis has become an important research activity in the Department of Veterans Affairs (VA). Statistical text mining and natural language processing have been shown to be very effective for extracting useful information from medical documents. However, neither of these techniques is effective at extracting the information stored in semi-structure text elements. A prototype system (TagLine) was developed as a method for extracting information from the semi-structured portions of text using machine learning. Features for the learning machine were suggested by prior work, as well as by examining the text, and selecting those attributes that help distinguish the various classes …


Tracing Boundaries, Effacing Boundaries: Information Literacy As An Academic Discipline, Grace L. Veach Jan 2012

Tracing Boundaries, Effacing Boundaries: Information Literacy As An Academic Discipline, Grace L. Veach

USF Tampa Graduate Theses and Dissertations

Both librarianship and composition have been shaken by recent developments in higher education. In libraries ebooks and online databases threaten the traditional "library as warehouse model," while in composition, studies like The Citation Project show that students are not learning how to incorporate sources into their own writing effectively. This dissertation examines the disciplinary origins and current status of information literacy and makes a case for increased collaboration between Writing Studies and librarians and the eventual emergence of information literacy as a discipline in its own right. Chapter One introduces the near-total failure of information literacy pedagogy and the lack …