Digital Commons Network^™

Video Annotation By Crowd Workers With Privacy-Preserving Local Disclosure, Apeksha Dipak Kumavat

Open Access Theses

Advancements in computer vision are still not reliable enough for detecting video content including humans and their actions. Microtask crowdsourcing on task markets such as Amazon Mechnical Turk and Upwork can bring humans into the loop. However, engaging crowd workers to annotate non-public video footage risks revealing the identities of people in the video who may have a right to anonymity.

This thesis demonstrates how we can engage untrusted crowd workers to detect behaviors and objects, while robustly concealing the identities of all faces. We developed a web-based system that presents obfuscated videos to crowd workers, and provides them with …

Hua Qian Zhao Zui Shou Looking For Trouble At Own Expense - A Study Of Tourist (Mis)Behaviors, Yue Li

Open Access Theses

The study sets two objectives. The first is to investigate how an array of tourist misbehaviors was perceived by the young generations of the United States and China. The second is to examine factors that could explain any perceptual differences between young Americans and Chinese. Five research questions were developed and addressed for the first objective through online surveys by comparing the perceptions of American respondents and Chinese respondents on a list of tourist misbehaviors. They are: 1) What are the annoyance levels of tourist misbehaviors perceived by American college students? 2) What are the annoyance levels of tourist misbehaviors …

Can Wearable Devices Reduce Burnout By Making People Aware Of Stress?, Rohit Mundayaliyath Mundayadan

Open Access Theses

Wearable fitness technology is advancing in its capabilities. Every new sensor collects new health data, and it becomes important to study how effectively this data can be utilized to help people lead healthier lives. The American Psychological Association found that Americans live with stress levels higher than what is considered healthy. Poorly managed stress can lead to burnout, which leads to unproductive workers. Burnout is known to cost businesses considerable money. The goal of this research study was to determine if burnout could be reduced through the use of a consumer wearable device along with smartphone apps that alerted wearers …

Dopamine D1 Receptor Activity In The Basolateral Amygdala Is Important For Mediating Fear, Reward And Safety Discrimination Learning, Ka Ho Ng

Open Access Theses

Post traumatic stress disorder (PTSD) patients frequently show impairment in safety learning (Jovanovic, Kazama, Bachevalier, & Davis, 2012). Since the amygdala is known to be critical for emotional processing(Wassum & Izquierdo, 2015) and dopamine signaling in the amygdala is important for mediating both fear and reward learning, current experiments examined the role of dopamine signaling in the BLA in mediating both safety learning and reward seeking. We manipulated dopamine D1 receptor activity with a D1 receptor agonist (SKF 38393) or D1 receptor antagonist (SCH23390) either systemically or infused directly into the BLA 20 minutes prior to training rats in a …

Structure-Function Analysis Of The Dopamine Transporter In The Presence Of Synthetic Cathinones And Amphetamines, Shari Melissa Radford

Open Access Theses

The dopamine transporter (DAT) is a monoamine transporter that regulates dopamine (DA) neurotransmission by clearing DA from the synapse. DAT is acted on by a number of psychostimulant drugs, which block reuptake and potentiate DA signaling. Several inhibitors of DAT, both amphetamines and cathinones, also cause reversal of transport. Previous research has shown the importance of a conserved salt bridge in another monoamine transporter, the serotonin transporter, in amphetamine-induced efflux. In our studies here, we engineered a mutant Drosophila melanogaster DAT (dDAT D475N) designed to interrupt this salt bridge and examine the effects on amphetamine- and cathinone-induced efflux in vitro. …

The Impact Of Sleep Disruption On Mouse Physiology, Behavior, And Welfare, Amanda L. Robinson-Junker

Open Access Theses

Laboratory mice are nocturnal, spending most of their daylight hours asleep. But they live in the diurnal world of human investigators and husbandry staff, who primarily work during this rest period. In humans, lack of sleep or sleep that occurs outside the normal circadian sleep period (as in shift work) has adverse effects. These include increased risk of cardiovascular disease, cancer, metabolic disorder, mood disorders, type II diabetes, and obesity. However, it is unknown if mice experience sleep disruption due to these human activities, and, if so, what the adverse effects may be. This is an important question, not only …

Task Manipulation Effects On The Relationship Between Working Memory Capacity And Go/No-Go Performance, Elizabeth A. Wiemers

Open Access Theses

Seemingly minor task manipulations can have large and sometimes unpredicted effects on task performance. Despite this, single tasks are typical in both research and assessment applications. This series of experiments aims to systematically investigate the differences between various perceptual and semantic versions of go/no-go tasks and their relationships with working memory capacity (WMC) with the goal of determining the cause of inconsistencies in the literature. Because these versions of the go/no-go have not previously been systematically studied, the first experiment does so. After determining which performance differences exist based on versions of both task and decision, and noting that these …

Metrics Of Critical Pair Identification, Zixu Zhang

Open Access Theses

Critical Pair Identification works as a potential assistive tool for human air traffic controllers by identifying potentially dangerous situations that are not detected by proposed automated separation assurance systems. This concept specifically considers conflicts that might arise if aircraft unexpectedly deviate from their planned flight path in the near future. Five metrics of the critical pair concept, Critical Pair Count, Time to Risk Exposure, Lead Time, Risk Exposure Duration and Blunder Sensitivity Index, have been developed and mathematically defined to characterize the safety level of an aircraft pair or a volume of air space. Algorithm that computes proposed metrics is …

Language, Culture, And Identity Negotiation: Perspectives Of Adolescent Japanese Sojourner Students In The Midwest, Usa, Reiko Akiyama

Open Access Dissertations

This qualitative research highlights the voices and lived experiences of adolescent Japanese sojourner students and their mothers residing in the Midwest. The central goals of this research are to understand what adolescent Japanese sojourner students’ school experiences in the U.S. are like—particularly in areas with small Japanese populations—and how their experiences in the U.S. shape their current identities as cultural and linguistic minority students. This research also aims to learn how the students’ sojourning experiences influenced their mindsets as future returnee students. I conducted an in-depth case study with a phenomenographic approach as the theoretical framework to deeply investigate the …

A Unique Perspective On The Demand For Livestock Product Attributes, Elizabeth S. Byrd

Open Access Dissertations

Consumers are increasingly concerned about the social and environmental impacts of the foods they purchase. Both choice experiments and best-worst scaling (BWS) methodology have been used to elicit consumer willingness to pay (WTP) for food attributes and the relative importance of food attributes to consumers. The dissertation consists of four essays. Chapter 2 presents a formal law review article exploring the laws associated with wild game harvest, consumption, and inspections. The remaining three essays (Chapters 3-5) each address an extension or application of choice experiment and/or BWS methodology focused on credence attributes of meat products. Two online surveys were used …

Authentic Science In Education: Studies In Course-Based Research At The United States Military Academy, Anthony M. Chase

Open Access Dissertations

This dissertation consists of two studies at the United States Military Academy. Both studies involve the use of Course-based Undergraduate Research Experiences (CUREs). These experiences give students the ability to engage in undergraduate research at an early point in their academic career by replacing traditional laboratory activities with semester-long research projects. Both studies show an implementation of this type of instruction from the Center for Authentic Science Practice in Education (CASPiE). Study 1 shows the specific method of implementation at the military academy and explores learning-based outcomes. Primarily the outcome of critical thinking is demonstrated. Critical thinking is a construct …

Teoria De La Mente Y Sociedad En La Narrativa Policiaca De Lorenzo Silva Y Francisco Garcia Pavon: Estereotipos, Roles De Genero Y Minorias, Jesus Castro Gorfti

Open Access Dissertations

Spanish:

The purpose of this study is to utilize certain aspects of cognitive psychology as a framework to analyze the police procedural novels of two Spanish authors: Francisco García Pavón and Lorenzo Silva. Specifically, we will focus on two main aspects of the mind studied by the cognitive sciences: Theory of Mind and metarepresentations. Theory of Mind (ToM) refers to the capacity that human beings have to attribute mental states to other humans, as well as oneself, based on their bodily and facial gestures. The concept of metarepresentation refers to the ability of humans to keep track of who said …

The Association Between Tolerance For Ambiguity And Fear Of Negative Evaluation: A Study Of Engineering Technology Capstone Courses, Sergey I. Dubikovsky

Open Access Dissertations

For many students in engineering and engineering technology programs in the US, senior capstone design courses require students to form a team, define a problem, and find a feasible technical solution to address this problem. Students must integrate the knowledge and skills acquired during their studies at the college or university level. These truly integrative design activities do not have a single “correct” solution. Instead, there is an array of solutions, many of which could be used to achieve the final result. This ambiguity can cause students to experience anxiety during the projects.

This study examined the main topics: • …

How Training Set And Prior Knowledge Affect Preschoolers' Perception Of Quantity And Early Number Learning, Arum Han

Open Access Dissertations

This dissertation examines how training on the iPad can improve children’s quantity recognition, and whether different types of training might be warranted for children with different levels of experience. Study 1 tested the effects of multiple exemplar training (3 cars / 3 apples / 3 ducks, etc.) versus single exemplar training (3 cars / 3 cars / 3 cars, etc.) in recognizing quantities. For children just learning to recognize quantities (0-2 knowers), training with multiple exemplars was most effective for quantities three and four. For 3-6 knower children, single exemplar training was most effective for learning quantities five and six. …

Finding The Ghost With The Machine: Breaking Through The Assessment Center Validity Ceiling By Exploring Decisional Processes Using New Sources Of Behavioral Data Within Virtual Assessments, Brett W. Guidry

Open Access Dissertations

Decades of assessment center (AC) research has resulted in an inevitable “validity ceiling” whereby increasing the validity of the AC method is becoming increasingly difficult. To overcome this challenge, new avenues for collecting and evaluating AC participant behaviors must be explored, with a particular focus on overcoming the inherent limitations of human observation—a hallmark of the AC method. This study examines detailed logs of AC participant behaviors captured automatically and unobtrusively during a computer-based simulation assessment. Using a decision making framework, basic characteristics of the new behavioral data are tested against existing theories of decisional efficacy. The construct-related validity of …

Bad Girls In Corsets: Women And The Transgressive Body In The Nineteenth Century, Colleen Warwick Green

Open Access Dissertations

Women, and their bodies, posed an increasing anxiety for Victorian society. Culturally and outwardly, the Victorian era strove to maintain a level of decorum that, increasingly, the nineteenth-century woman were, rebelling against. The urge for women to break through social barriers and constraints binding them to the century created a divergence in thought from the traditional mores of the past, in turn affecting the ways in which womens’ bodies were portrayed, displayed and manipulated by the authors and artists of the century.

As women entered actively entered into spaces once closed to them, they furthered the rift of uncertainty and …

Perceval's Sister And Juliet Capulet As Disruptive Guides In Spiritual Quests, Joanna Benskin

Open Access Dissertations

Perceval’s sister in Sir Thomas Malory’s Le Morte Darthur and Juliet in William Shakespeare’s Romeo and Juliet act as disruptive guides in spiritual quests by contradicting the expectations placed on them as women characters.

Though women are banned from the quest for the Holy Grail, Perceval’s sister accompanies the Grail knights as an authoritative spiritual guide and a symbol of the Eucharist. Previous critics have not recognized Perceval’s sister as a fundamental disruption to the systemic misogyny of the Morte or her Eucharistic significance. She challenges both the chivalric misogyny that sees her as an object of rescue and the …

Exploring The Cause Of Injury Or Death In Grain Entrapment, Engulfment And Extrication, Salah F. Issa

Open Access Dissertations

Grain entrapments and engulfments are one of most common hazards associated with grain storage facilities. Since the 1970’s over 1,880 incidents have been documented in agricultural confined spaces of which 65% of all recorded incidents were grain entrapments and engulfments. There have been several studies conducted on the contributing factors behind these incidents; however, there have been very few attempts to understand the environmental, physiological or psychological factors the victims experience while entrapped, engulfed, or extricated. This includes understanding how secondary injuries are caused by grain or during extrication by first responders. The research effort was divided into three segments. …

The Application Of Natural Language Processing To Open Source Intelligence For Ontology Development In The Advanced Persistent Threat Domain, Corey T. Holzer

Open Access Dissertations

Over the past decade, the Advanced Persistent Threat (APT) has risen to forefront of cybersecurity threats. APTs are a major contributor to the billions of dollars lost by corporations around the world annually. The threat is significant enough that the Navy Cyber Power 2020 plan identified them as a “must mitigate” threat in order to ensure the security of its warfighting network.

Reports, white papers, and various other open source materials offer a plethora of information to cybersecurity professionals regarding these APT attacks and the organizations behind them but mining and correlating information out of these various sources needs the …

College Students' Suicidal Ideation: Testing The Predictions Of The Existential - Constructivist Theory Of Suicide, Jennifer Danielle Lockman

Open Access Dissertations

Suicide is the second leading cause of death in the college student population (Schwartz, 2006), and empirically supported theories for understanding suicide among college students are lacking (Lester, 1989; Prinstein, 2008; Rogers & Benson, 2013). Although not yet examined empirically, Rogers (2001) proposed an Existential - Constructivist Theory of Suicide (ECTS), in which existential distress and the inability to reconstruct meaning from adverse life events contribute to suicidal ideation. ECTS includes both interpersonal and intrapersonal drivers of suicidal ideation, and for this reason, may better explain suicidal ideation in college students than existing theoretical models. Existing research focuses on Joiner’s …

Poetry Matters: Radical Politics In Postmodern American Poetry, Christopher J. Padgett

Open Access Dissertations

Directly or indirectly, poetry produced in the postmodern era is implicated in the politics of the time. Postmodern American poetry, then, is not reducible to a single poetic mode or to a specific set of stylistic features. In other words, a more comprehensive understanding of postmodern American poetry can be made by employing a flexible version of Raymond Williams’ notion of uneven development, a theory that insists on the synchronic existence of dominant, residual, and emergent cultural elements. As the stylistically and politically diverse work of the six poets—Susan Howe, Robert Grenier, Gary Snyder, A.R. Ammons, Sherman Alexie, and Kenneth …

State Judicial Selection Methods As Public Policy: The Missouri Plan, James A. Gleason

Open Access Dissertations

State judiciaries are foundational institutions of governance in the United States. They are coequal, policy-making branches of government whose members, along with the legislative and executive branches, are constitutionally authorized and empowered in all fifty American states. Extant research on judicial selection in the American states provides neither a comprehensive theory of why states choose their particular judicial selection method nor a comprehensive empirical assessment of this important question. This research seeks to fill this lacuna by increasing understanding of American state courts through the formulation of a theory of state judicial selection, a short but comprehensive history of state …

Race, Class And Gender In Engineering Education: A Quantitative Investigation Of First Year Enrollment, Canek Moises Luna Phillips

Open Access Dissertations

Research explanations for the disparity across both race and gender in engineering education has typically relied on a deficit model, whereby women and people of color lack the requisite knowledge or psychological characteristics that Whites and men have to become engineers in sufficient numbers. Instead of using a deficit model approach to explain gender and race disparity, in the three studies conducted for this dissertation, I approach gender and race disparity as the result of processes of segregation linked to the historic and on-going perpetuation of systemic sources of oppression in the United States. In the first study, I investigate …

A Phenomenological Inquiry Into Sacred Time In Hinduism, Netty Provost

Open Access Dissertations

In this work, I examine the nature of sacred time in religious experience. Applying the methodology of phenomenology of religion, I inspect the ways in which human beings experience sacred time in Hinduism and present an argument against Mircea Eliade’s understanding of the nature of sacred time in Hinduism. Eliade asserted that all sacred time in Hinduism is fundamentally circular in nature and that the experience of sacred time is an experience of the original act of creation being made consciously present to the individual.

I will scrutinize Eliade’s arguments on two fronts. Firstly, I argue against Eliade’s claim that …

A New Approach To Modeling Aviation Accidents, Arjun Harsha Rao

Open Access Dissertations

General Aviation (GA) is a catchall term for all aircraft operations in the US that are not categorized as commercial operations or military flights. GA aircraft account for almost 97% of the US civil aviation fleet. Unfortunately, GA flights have a much higher fatal accident rate than commercial operations. Recent estimates by the Federal Aviation Administration (FAA) showed that the GA fatal accident rate has remained relatively unchanged between 2010 and 2015, with 1566 fatal accidents accounting for 2650 fatalities. Several research efforts have been directed towards betters understanding the causes of GA accidents. Many of these efforts use National …

A Unicorn's Tale: Examining The Experiences Of Black Women In Engineering Industry, Monique S. Ross

Open Access Dissertations

Black women have recently been identified as the most educated demographic in the United States, and yet they are grossly underrepresented in engineering. They comprise 6.4 % of the U.S. population and only 0.72 % of engineering industry. Meanwhile, engineers have been identified as the key to the United States’ ability to maintain its prominence and leadership in a competitive global economy due to their contribution to maintaining and improving our infrastructures and standard of living. This significance to society has spawned national initiatives geared towards broadening participation in engineering. This research study was designed to explore the experiences of …

Understanding The Formation Of American Mental Health Policy Preferences, 1952-1981, Andrew D. Tuholski

Open Access Dissertations

In the United States, the emergence of an outpatient-centered, drug-based model of mental health care was physically feasible from the 1950s onward, with the introduction of thorazine and other first-generation antipsychotics. However, it was not until 1981, with President Reagan’s veto of the Mental Health Systems Act, that American mental health policy tipped over definitively into the outpatient-centered, drug-based model. In this quantitative study of the formation of policy preference, the delay between the feasibility of the outpatient-centered, drug-based model and its adoption was explored through five research questions answered through corpus analysis and time series statistics: How do shifts …

Seeking Interdependence: Commitment Desirability And The Initiation And Maintenance Of Close Relationships, Yu-Yang Kenneth Tan

Open Access Dissertations

People vary in the extent to which they believe that a committed relationship is desirable for them. The current research offers and examines the concept of commitment desirability, defined as the subjective desire to be involved in a committed romantic relationship. In six studies, the present research developed and tested a measure of commitment desirability and explored how it influences relationship initiation among those not currently involved in a relationship, and maintenance and dissolution decisions among those who are involved in a relationship. Study 1 and 2a developed and validated a reliable measure of commitment desirability. Study 2b examined the …

Computer Vision-Based Structural Assessment Exploiting Large Volumes Of Images, Chul Min Yeum

Open Access Dissertations

Visual assessment is a process to understand the state of a structure based on evaluations originating from visual information. Recent advances in computer vision to explore new sensors, sensing platforms and high-performance computing have shed light on the potential for vision-based visual assessment in civil engineering structures. The use of low-cost, high-resolution visual sensors in conjunction with mobile and aerial platforms can overcome spatial and temporal limitations typically associated with other forms of sensing in civil structures. Also, GPU-accelerated and parallel computing offer unprecedented speed and performance, accelerating processing the collected visual data. However, despite the enormous endeavor in past …

Tunnel Vision: Causes, Effects, And Mitigation Strategies, Brian Reichart

Hofstra Law Review

The author discusses his experience concerning a case of actual innocence involving murder defendant Patricia "Patty" Prewitt with little chance of judicial remedy because of what is referred to as tunnel vision via confirmation bias on the part of legal authorities concerning the criminal investigation and subsequent trial of Prewitt, particularly a single-minded theory of culpability based on the gathered evidence. The article also discusses possible strategies of tunnel vision mitigation.