Digital Commons Network^™

Proposition 47 And Crime: A Difference In Differences Analysis Of Incarceration Rates And Crime Using Border Counties, Brian J. Fischer

Theses and Dissertations

California passed Proposition 47 by vote and changed the way the state punishes drug and theft. I find an increase in crime using a difference in differences model by computing the change in thefts with the change in inmates. This effect sides with anecdotal claims and disagrees with empirical studies.

Inhospitable In The Hospitality State: The Mississippi State Hospital In The Jim Crow South, 1865-1966, Michael Thomas Murphy

Theses and Dissertations

This dissertation is an institutional history of the Mississippi State Hospital. Specifically, it is a study of the use of the hospital as an institutional instrument to establish, maintain, reinforce state-sponsored racial segregation and white supremacy during the period of Jim Crow in Mississippi. Mississippi's institution for its mentally ill residents became an instrument to reinforce the state's racially, socially, and economically rigid society.

Applying Attribute-Based Encryption In Two-Way Radio Talk Groups: A Feasibility Study, Michael Andreas Gough

Theses and Dissertations

In two-way radio systems, talk groups are used to organize communication. Some situations may call for creating a temporary talk group, but there are no straightforward ways to do this. Making a new talk group requires programming radios off-line. Temporary groups can be created, but this requires inputting radio IDs which is tedious on a radio's limited controls. By describing group members using attributes, ciphertext-policy attribute-based encryption (CP-ABE) can be used to quickly create sub-groups of a talk group. This scheme requires fewer button presses and messages sent in the new talk group are kept secret. CP-ABE can be used …

Increasing Awareness Of Autism Spectrum Disorders In Law Enforcement In Hispanic Communities, Annette M. Cano

Theses and Dissertations

The aim of the present study was to study autism awareness amongst law enforcement officers (LEO) and first responders (FR) serving the Rio Grande Valley (RGV). A 17-question survey was conducted to collect demographic data, knowledge, and level of training that officers and responders have when serving individuals with Autism Spectrum Disorder (ASD).

Client-Driven Creation & Professional Patterns In Modern Design: A Case Study Of One Vanderbilt Avenue, Joshua J. Schmitz

Theses and Dissertations

Design, though intricately tied to art through craft, concept and media, is the base converse of art. That is to say, Design is externally motivated by a client’s needs. This case study focuses on my professional work with the companies of S.L. Green and Firespring on the New York City skyscraper One Vanderbilt Avenue (OVA) and demonstrates how a creative concept can be altered through external factors, namely client input. My research will explain why a modern designer must occupy a production-oriented role and continuously leverage insight from an interdisciplinary team in a modern creative firm. The exhibition stemming from …

Intersection Safety Analysis Methodology For Utah Roadways, Joshua Daniel Gibbons

Theses and Dissertations

Roadway safety continues to be a priority for the Utah Department of Transportation (UDOT) Traffic and Safety Division. UDOT has participated in and managed several research projects in recent years to determine the roadway segments of highest safety concern in the state. This research has provided UDOT with more tools to assist in safety project prioritization. Researchers in Department of Civil and Environmental Engineering at Brigham Young University (BYU) have worked with UDOT and the Statistics Department at BYU to create two network screening statistical tools called the Utah Crash Prediction Model (UCPM) and the Utah Crash Severity Model (UCSM) …

Risk Analysis Of Autonomous Vehicle And Its Safety Impact On Mixed Traffic Stream, Plaban Das

Theses and Dissertations

In 2016, more than 35,000 people died in traffic crashes, and human error was the reason for 94% of these deaths. Researchers and automobile companies are testing autonomous vehicles in mixed traffic streams to eliminate human error by removing the human driver behind the steering wheel. However, recent autonomous vehicle crashes while testing indicate the necessity for a more thorough risk analysis. The objectives of this study were (1) to perform a risk analysis of autonomous vehicles and (2) to evaluate the safety impact of these vehicles in a mixed traffic stream. The overall research was divided into two phases: …

Understanding The Experiences And Perceptions Of Specialty Mental Health Probation Officers, Brice Terpstra

Theses and Dissertations

Over the last two decades, specialty mental health probation caseloads have become increasingly common – focusing on offenders with serious mental illness (SMI). Scholars have examined overall effectiveness, the organization and design of these programs, and the differences between standard probation and specialty probation. Less attention, however, has been placed on examining how the officers supervising these SMI caseloads perceive their roles as specialty mental health probation officers and how discretion impacts their caseload management. In the current study semi-structured interviews were conducted with a complete census of 24 SMI caseload probation officers and supervisors in Maricopa County, Arizona over …

Getting In Each Other’S Way: Enlarging The Possibilities Of Sustainable Community Development Through Communication, Cecelia M. Long

Theses and Dissertations

The ultimate aim of sustainable community development is to produce, promote, and preserve community well-being. When community developers are unable to effectively articulate and actualize this aim, the individuals and communities they serve needlessly suffer, especially those in poverty circumstances, homelessness, and other forms of destitution. In this thesis, I explore the communication between organizational leaders, their collaborative partners, and participatory community members as a vital component of sustainable community development. This study addresses the lack of a comprehensive set of communicative strategies for community developers to produce sustainable change and well-being for all. I conducted twenty-five in-depth interviews with …

Variable Speed Simulation For Accelerated Industrial Control System Cyber Training, Luke M. Bradford

Theses and Dissertations

It is important for industrial control system operators to receive quality training to defend against cyber attacks. Hands-on training exercises with real-world control systems allow operators to learn various defensive techniques and see the real-world impact of changes made to a control system. Cyber attacks and operator actions can have unforeseen effects that take a significant amount of time to manifest and potentially cause physical harm to the system, making high-fidelity training exercises time-consuming and costly. This thesis presents a method for accelerating training exercises by simulating and predicting the effects of a cyber event on a partially-simulated control system. …

Securing Critical Infrastructure: A Ransomware Study, Blaine M. Jeffries

Theses and Dissertations

This thesis reviews traditional ransomware attack trends in order to present a taxonomy for ransomware targeting industrial control systems. After reviewing a critical infrastructure ransomware attack methodology, a corresponding response and recovery plan is described. The plan emphasizes security through redundancy, specifically the incorporation of standby programmable logic controllers. This thesis goes on to describe a set of experiments conducted to test the viability of defending against a specialized ransomware attack with a redundant controller network. Results support that specific redundancy schemes are effective in recovering from a successful attack. Further experimentation is conducted to test the feasibility of industrial …

The Effect Of Ammonia On The Germination And Outgrowth Of Bacillius Globigii, Joseph B. Kunicki

Theses and Dissertations

This research investigated the germination and outgrowth of Bacillus globigii in the presence of ammonia in laboratory scale experiments. Germination was measured by monitoring the release of dipicolinic acid, an organic compound present in bacterial spores, while outgrowth was measured using phase-bright microscopy and semi-automated counting procedures. The ammonia-N concentrations investigated generally did not cause statistically significant differences in the initial 1-hr germination rates or the average 3-hr outgrowth rates of Bacillus globigii spores in batch style experiments. The average 1-hr germination rates observed in the absence of ammonia-N was 0.0258 hr^-1 for the water and buffer controls and …

Sentiment Analysis Of Twitter Data, Evan L. Munson

Theses and Dissertations

The rapid expansion and acceptance of social media has opened doors into users’ opinions and perceptions that were never as accessible as they are with today's prevalence of mobile technology. Harvested data, analyzed for opinions and sentiment can provide powerful insight into a population. This research utilizes Twitter data due to its widespread global use, in order to examine the sentiment associated with tweets. An approach utilizing Twitter #hashtags and Latent Dirichlet Allocation topic modeling were utilized to differentiate between tweet topics. A lexicographical dictionary was then utilized to classify sentiment. This method provides a framework for an analyst to …

Forecasting Lightning Cessation Using Dual-Polarization Radar And Lightning Mapping Array Near Washington, D.C., Nancy M. Holden

Theses and Dissertations

Accurate forecasts of thunderstorms are important to space launch, aviation, and public safety. While prior studies have primarily focused on atmospheric conditions leading to lightning onset, less research has been dedicated to the challenging problem of predicting lightning cessation. This study verifies the probabilistic lightning cessation model developed by Joseph Patton (2017) at Florida State University for use by the U.S. Air Force's 45th Weather Squadron at Cape Canaveral Air Force Station (CCAFS) and the National Aeronautics and Space Administration (NASA) Kennedy Space Center (KSC). The Washington, D.C. greater metropolitan area, which presents a climate different to that of central …

Forecasting Lightning Initiation Utilizing Dual-Polarization Radar Parameters Over Washington, D.C., Sarah A. Olsen

Theses and Dissertations

Accurate forecasts of thunderstorms are vital to space launch, aviation, and public safety. Prior studies by Woodard (2011), Thurmond (2014), and Travis (2015) show that dual-polarization radar can be utilized to identify the presence of hydrometeors necessary for cloud charging. These studies emphasized that a combination of radar reflectivity (Z) and differential reflectivity (Z_DR) predictors have the potential to improve forecast skill of lightning initiation over methods that rely on Z alone (Roeder and Pinder, 1998; Yang and King, 2010). Travis (2015) discovered two parameters, when used together, produced the best results: Z ≥ 36.5 dBZ and ZDR …

Studying Online Deviant Groups (Odgs): A Socio-Technical Approach Leveraging Social Network Analysis (Sna) & Social Cyber Forensics (Scf) Techniques, Samer Al-Khateeb

Theses and Dissertations

In today’s information technology age our thinking and behaviors are highly influenced by what we see on the Internet and our smartphones screens, e.g., watching a fake or photo-shopped image of a well-known individual makes some of us think it is true. But in many cases, it is not. The initial use of social media for benign purposes, e.g., to socialize with friends or browse pictures has increasingly transitioned to include malicious activities, e.g., cyber-terrorism and cyber-warfare. These nefarious uses of Online Social Networks (OSNs) pose a significant threat to society and are under-studied, thus requires research attention. Online Deviant …

Cross-National Effectiveness Of Cognitive/Affective, Demographic, And Skills Selection Criteria, Wei Wang

Theses and Dissertations

Although high unemployment rates exist in many countries of the world, companies continue to struggle to hire candidates whose personality traits and competencies match their needs. High unemployment rates and a global talent shortage can be seen as a fascinating contradiction that merits future research. This study investigates suitable personnel selection methods that assist recruiters in seeking the right person with the potential to contribute most to a business. It consolidates theories about personnel selection in a cross-national setting and link them with specific personality traits, job competencies, and person-organization fit (P-O fit) that could predict and enhance employee outcomes. …

Fault Tolerance In Wban Applications, Malak Yousry Elsalamouny

Theses and Dissertations

One of the most promising applications of IoT is Wireless Body Area Net-works (WBANs) in medical applications. They allow physiological signals monitoring of patients without the presence of nearby medical personnel. Furthermore, WBANs enable feedback action to be taken either periodically or event-based following the Networked Control Systems (NCSs) techniques. This thesis first presents the architecture of a fault tolerant WBAN. Sensors data are sent over two redundant paths to be processed, analyzed and monitored. The two main communication protocols utilized in this system are Low power Wi-Fi (IEEE 802.11n) and Long Term Evolution (LTE). Riverbed Modeler is used to …

“We’Re All In This Together:” Exploring The Effectiveness And Responsiveness Of Nonprofits In Promoting The Socioeconomic Integration Of Refugees, Brittany Keegan

Theses and Dissertations

When a person is forced to flee their home due to violence or the fear of persecution, they must seek refuge elsewhere – either within the borders of their home country or in a new country. Those who travel to another country in search of safety and protection are known as refugees, and as world conflicts continue, the number of refugees around the world is steadily increasing. As refugees integrate into their new communities, they often receive support from nonprofit organizations once government assistance has ceased. This mixed method study uses 60 open-ended, first-person interviews with refugees and nonprofit service …

Critical Counseling Competencies For The English-Speaking Caribbean, Antonia Forbes

Theses and Dissertations

The development of competencies for counseling persons from varying cultures around the world is an important topic of discussion within the field of counseling psychology (Turner-Essel, & Waehler, 2009; Ng & Noonan, 2012; Gerstein & AEgisdottir, 2007). Mental health and socio-emotional needs know no geographical boundaries and as such require attention in many populations which have limited formal services for these concerns. If we are to follow the multicultural competence guidelines within our discipline (Sue, Arredondo & McDavis,1992; Vera & Speight, 2003) we must meet these needs in a way that first seeks to understand our clients’ cultural backgrounds and …

The Predictive Validity Of The Static-99r And Stable-2007 In A Community Sample Of Sex Offenders, Amy Veith

Theses and Dissertations

The current study explored the accuracy of Static-99R and STABLE-2007 risk evaluations in predicting sex offender recidivism (n = 136) over an average 7.8 year follow-up period. These protocols are differentiated on the basis of their reliance on actuarial versus

dynamic risk factors respectively. The present analysis tested their predictive validity both independently and in combination with one another. It was hypothesized that the Static-99R and the STABLE-2007 would provide moderate predictive accuracy that would be enhanced by their combination. Support was not found for either hypothesis in regard to sexual recidivism, but the Static-99-R did show fair accuracy (AUC …

Northern Great Plains Blizzards In Past And Future Climates, Alexander Trellinger

Theses and Dissertations

Areas that reside in the high-latitudes such as the northern United States can experience hazardous conditions during the winter months due to snowstorms. When strong winds exist with falling or freshly fallen snow, blizzard conditions are able create significant personal, societal, and economic impacts for the Northern Great Plains. While the climatology for these extreme snowstorms is known, the frequency and intensity of how these events may change in a warming climate is not certain. In order to determine how extreme snowstorms may change in the future climate, climate models can be used but the horizontal and vertical grid spacing …

Examining The Effectiveness Of Upward Bound On Postsecondary Success: A Phenomenological Study, Marilyn E. Ingram

Theses and Dissertations

As the achievement gap between African American and Latino students and their White counterparts continues to grow, lawmakers are searching for ways to decrease the disparity. As a result, college access programs that focus on improving basic skills and strengthening academic achievement have become essential to fostering student success. With Upward Bound being one of the longest running federally funded college access programs, its success and effectiveness have been the focus of several studies. Surprisingly, very little qualitative phenomenological research exists that is solely devoted to student perceptions. The purpose of this qualitative phenomenological study was to understand the impact …

Corporate Activism In The Age Of Lgbt Equality: The Promise And Limitations Of The Modern Executive Champion Of Lgbt Rights, Nii-Quarterlai Quartey

Theses and Dissertations

Over the course of the last 60 years, the Lesbian, Gay, Bisexual, Transgender (LGBT) rights movement in the United States has become a beacon of light around the world where LGBT persons continue to face intolerance, discrimination, persecution, and death. As this qualitative phenomenological study was being written, LGBT Americans taking advantage of their legal rights to marry, still face employment discrimination, housing discrimination, adoption discrimination, immigration discrimination, and discrimination in public accommodations including a Presidential Executive Order, state, and local legislation forcing transgender people to use the restroom that reflects their assigned gender at birth. In fact, in almost …

Once A Felon….Always A Felon? A Comparative Case Study Of The Experiences Of Convicted African-American Fathers, Douglas Bates

Theses and Dissertations

Currently, African-Americans account for 12.3% of the U.S. population but represent 38% of the prison population (The Sentencing Project, 2016). Of the many African-American males sent to prison each year, there is limited research that explores the impact a conviction has on African-American fathers. Within the literature, researchers (Laakso & Nygaard, 2012; Miller, et. al., 2013, Flouri & Buchanan, 2002; Lee, Sansone, Swanson, & Tatum, 2012; Johnson & Easterling, 2015; Miller, 2006; Lopez & Bhat, 2007; Aaron & Dallaire, 2009) only focus on the effect incarceration has on children and the experiences of fathers while incarcerated (Roy & Dyson, 2005; …

Creating An Online Social Movement In Socially Conservative Societies: A Case Study Of Manshoor Blog Using Frame Alignment Process, Noura Abdullah Al-Duaijani

Theses and Dissertations

In the last decade, the Arab region has witnessed many political and social changes. Parts of these changes were initiated by millennials seeking social change to elevate the quality of life in their country and themselves. In one particular country, Kuwait, youth have pursued social change by advocating a freer lifestyle and regime change in government and institutions. Manshoor, an Arab language blog launched in November 2016 by two Kuwaiti liberals, Jassim Qamis and Ali Al-Nessif, stimulates an open conversation on a wide range of issues, including controversial ideas in the region such as scrutinizing some practices and beliefs of …

Tweets About Tornado Warnings: A Spatiotemporal And Content Analysis, Raelene C. Campbell

Theses and Dissertations

Throughout the United States, tornadoes frequently occur throughout the entire year. With each tornado there is a tornado warning that the National Weather Service (NWS) issues with a goal of protecting life and property. By using social media, these messages quickly reach the public. By analyzing Twitter data, this study aims to gain a spatiotemporal understanding of tweets, including when and where they most frequently occur. Most tweets occur within the warning time (temporal) and inside the warning polygon (spatial). To gain a better understanding of the information the tweet contains, a content analysis shows key warning characteristics such as …

Why Local Governments Collaborate: Perspectives From Elected Officials And Local Government Managers On Regional Collaboration, Stephanie D. Davis

Theses and Dissertations

This study examined the factors that influence a local government’s decision to engage in regional collaborations. Analysis of 7 local government managers and eleven elected officials revealed that the decision to engage in regional collaboration was influenced by external factors, organizational factors, and internal motivations. Elected officials and local government managers identified a disaster occurrence, fiscal stress, outside agencies, jurisdictional benefit, and communication as key factors. Further, this research highlights the importance of the role of the elected official in intergovernmental arrangements, the role of the local government manager as the policy entrepreneur, and the influence of shared norms and …

Validation Of Virginia's Juvenile Risk Assessment Instrument, Jessica P. Schneider

Theses and Dissertations

Utilizing a validated risk assessment tool to predict future offending is recommended as best practices in corrections by a number of professional organizations (Latessa & Lovins, 2010). Guided by the risk-needs-responsivity model, risk assessment tools have evolved to help inform criminal justice practitioners by identifying offenders most in need of intervention or supervision, guiding the case plan to optimize outcomes (Bonta & Andrews, 2007). The Virginia Department of Juvenile Justice (DJJ) utilizes the Youth Assessment and Screening Instrument (YASI) at all stages of contact with youthful offenders, including intake, probation, commitment, and parole (DJJ, 2016). However, risk assessment instruments do …

Police Officer Perceptions Of Organizational Justice And Body-Worn Cameras: A Civilizing Effect?, Carolyn Naoroz Ph.D.

Theses and Dissertations

This research sought to understand the potential association between officer perceptions of organizational justiceand officer perceptions of body-worn cameras (BWCs). A questionnaire was administered to a convenience sample of 362 officersfrom the 750 sworn personnel from the Richmond Police Department in Richmond, VA, yielding a response rate of 91% and representing 44% of the Richmond Police Department’s sworn employees. This study extends prior work by partially replicating a previous BWC survey conducted by leading body-worn camera scholars, utilizing a large sample from an urban mid-Atlantic police department. This study also extends prior work on officer perceptions of organizational justice …