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2015

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Analysis Of Effects Of Surface Roughness And Local Surface Imperfections On Measured Pressure, Laurin Ashley Bookout Jan 2015

Analysis Of Effects Of Surface Roughness And Local Surface Imperfections On Measured Pressure, Laurin Ashley Bookout

Doctoral Dissertations

"When tests using pressure to characterize the performance or effects of an explosive are conducted in laboratory or other small scale, highly controlled settings, it is expected that any gages will be ideally mounted and there will not be any surface imperfections or roughness near the gage location. However, when explosive tests are scaled up, the test beds typically do not have perfect surfaces. Instead there may be rough surfaces with various types of geometry or situations where it is extremely difficult to get the gage flush mounted with a flat surface. In a time where tests with multiple replications …

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Advanced Approaches For Bridge Deck Assessment Using Ground Penetrating Radar, Aleksey Kamilevich Khamzin Jan 2015

Advanced Approaches For Bridge Deck Assessment Using Ground Penetrating Radar, Aleksey Kamilevich Khamzin

Doctoral Dissertations

"Ground penetrating radar (GPR) data were acquired across four bridge decks with the objective of developing an advanced workflow for GPR operation that would allow the bridge owners to estimate repair quantities for certain bridge decks, based on GPR data. The primary contributions from this research are as follows: 1. It was demonstrated that the conditions of bridge decks can be cost-effectively and efficiently assessed using the GPR tool. 2. The GPR tool's ability to provide rapid and reliable results in comparison with conventional bridge deck condition assessment techniques was established. 3. The qualitative and quantitative relationships between the GPR …

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Approximation Methods In Relativistic Eigenvalue Perturbation Theory, Jonathan Howard Noble Jan 2015

Approximation Methods In Relativistic Eigenvalue Perturbation Theory, Jonathan Howard Noble

Doctoral Dissertations

"In this dissertation, three questions, concerning approximation methods for the eigenvalues of quantum mechanical systems, are investigated: (i) What is a pseudo-Hermitian Hamiltonian, and how can its eigenvalues be approximated via numerical calculations? This is a fairly broad topic, and the scope of the investigation is narrowed by focusing on a subgroup of pseudo-Hermitian operators, namely, PT-symmetric operators. Within a numerical approach, one projects a PT-symmetric Hamiltonian onto an appropriate basis, and uses a straightforward two-step algorithm to diagonalize the resulting matrix, leading to numerically approximated eigenvalues. (ii) Within an analytic ansatz, how can a relativistic Dirac Hamiltonian be …

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Experimental And Computational Analysis Of Thermosyphon Based Water Heaters, Siddarth Ashokkumar Jan 2015

Experimental And Computational Analysis Of Thermosyphon Based Water Heaters, Siddarth Ashokkumar

Masters Theses

"Storage type electric water heaters are one of the most commonly found type of heaters in households today. Due to energy costs and limited generation capacity, there is a need for improving the efficiency of such water heaters. The efficiency of water heating systems have impact both at the household and at the national level, because of their sheer numbers. Efficient water heaters lead to lower utility bills for the consumer and also reduced demand on the grid supplying electrical power to such households. This leads to a reduction in the amount of fuel used in generating electrical power and …

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Some Combinatorial Applications Of Sage, An Open Source Program, Jessica Ruth Chowning Jan 2015

Some Combinatorial Applications Of Sage, An Open Source Program, Jessica Ruth Chowning

Masters Theses

"In this thesis, we consider the usefulness of Sage, an online and open-source program, in analyzing permutation puzzles such as the Rubik's cube and a specific combinatorial structure called the projective plane. Many programs exist to expedite calculations in research and provide previously-unavailable solutions; some require purchase, while others, such as Sage, are available for free online. Sage is asked to handle a small permutation puzzle called Swap, and then we explore how it calculates solutions for a Rubik's cube. We then discuss projective planes, Sage's library of functions for dealing with projective planes, and how they relate to the …

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An Experimental Study Of Fabrication Temperature Effect On Aqueous Extrusion Freeform Fabrication, Jie Li Jan 2015

An Experimental Study Of Fabrication Temperature Effect On Aqueous Extrusion Freeform Fabrication, Jie Li

Masters Theses

"In order to understand the effect of fabrication temperature, a computer controlled 3-D gantry system was used to extrude aqueous alumina paste using Extrusion Freeform Fabrication. The system includes a temperature control subsystem that allows for fabrication of components below the paste's freezing temperature in the range of -10⁰C to -30⁰C and a hot plate with temperature in the range of 20⁰C to 80⁰C inside a room temperature chamber. Comparisons in terms of relative density, mechanical properties, part accuracy and minimum deposition angle were performed by Extrusion Freeform Fabrication at 40⁰C plate temperature inside a room temperature chamber and at …

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Comparative Study Of Three Types Of Inverters Based On The Output Total Harmonic Distortion, Paterrson Thomas Jan 2015

Comparative Study Of Three Types Of Inverters Based On The Output Total Harmonic Distortion, Paterrson Thomas

Masters Theses

"In this thesis, three cases of power electronic inverters are taken into consideration to analyze their performance in terms of total harmonic distortion in their output voltage and output current. Firstly, a single H-bridge inverter is simulated. Staircase switching technique is used to generate the gating pulses for the switches. Only one switch is made to toggle for every half cycle. The fundamental harmonic component of the desired output voltage is considered to be 120 V. Secondly, the same topology is used with a Bipolar PWM gating technique. The switching frequency of the carrier wave is 33*60 Hz. Thirdly, a …

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Dependability Analysis And Recovery Support For Smart Grids, Isam Abdulmunem Alobaidi Jan 2015

Dependability Analysis And Recovery Support For Smart Grids, Isam Abdulmunem Alobaidi

Masters Theses

"The increasing scale and complexity of power grids exacerbate concerns about failure propagation. A single contingency, such as outage of a transmission line due to overload or weather-related damage, can cause cascading failures that manifest as blackouts. One objective of smart grids is to reduce the likelihood of cascading failure through the use of power electronics devices that can prevent, isolate, and mitigate the effects of faults. Given that these devices are themselves prone to failure, we seek to quantify the effects of their use on dependability attributes of smart grid. This thesis articulates analytical methods for analyzing two dependability …

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Aligning Public Participation To Stakeholders’ Sustainability Literacy—A Case Study On Sustainable Urban Development In Phoenix, Arizona, Matthew Cohen, Arnim Wiek, Braden Kay, John Harlow Jan 2015

Aligning Public Participation To Stakeholders’ Sustainability Literacy—A Case Study On Sustainable Urban Development In Phoenix, Arizona, Matthew Cohen, Arnim Wiek, Braden Kay, John Harlow

Earth and Environmental Sciences Publications

In public planning processes for sustainable urban development, planners and experts often face the challenge of engaging a public that is not familiar with sustainability principles or does not subscribe to sustainability values. Although there are calls to build the public’s sustainability literacy through social learning, such efforts require sufficient time and other resources that are not always available. Alternatively, public participation processes may be realigned with the sustainability literacy the participants possess, and their capacity can modestly be built during the engagement. Asking what tools might successfully align public participation with participants’ sustainability literacy, this article describes and evaluates …

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Using The Oldest Military Force For The Newest National Defense, Brian Claus, Robin A. Gandhi, Julia Rawnsley, John Crowe Jan 2015

Using The Oldest Military Force For The Newest National Defense, Brian Claus, Robin A. Gandhi, Julia Rawnsley, John Crowe

Journal of Strategic Security

The National Guard is establishing Cyber Mission Teams (CMT) that will fulfill a federal role to backfill active duty defending Department of Defense networks, but are also exploring how they could effectively fulfill state missions. The President, Council of Governors, and USCYBERCOM Commander have expressed concerns about U.S. critical infrastructure cyber network vulnerabilities and the increasing magnitude of threat our adversaries pose to those networks’ security. This article explores using this emerging National Guard capability in a state role for protection of critical infrastructure cyber networks. Most of the critical infrastructure is privately owned. Although current executive orders and policy …

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Determination Of Setting Times By Shear Wave Velocity Evolution In Fresh Mortar Using Bender Element Method, Jianfeng Zhu Jan 2015

Determination Of Setting Times By Shear Wave Velocity Evolution In Fresh Mortar Using Bender Element Method, Jianfeng Zhu

Masters Theses

This study aims at using modified bender element (BE) method to monitor the shear wave velocity (Vs) of mortar at early-age and determine initial and final setting times with the Vs method. Modifications of the traditional BE method have been made to overcome the aggressive cementitious environment and eliminate electromagnetic coupling. BE has been successfully employed in mortar samples with and without admixtures to evaluate the evolution of Vs during the early age (first 24 hrs) of hydration. An energy approach method of determining the first arrival time of S-wave has been proposed. Pulse wave velocity …

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On The Dynamic Analysis Of Compliant Mechanisms Based On The Pseudo-Rigid-Body Model, Andrew Christian Jan 2015

On The Dynamic Analysis Of Compliant Mechanisms Based On The Pseudo-Rigid-Body Model, Andrew Christian

Masters Theses

"Compliant mechanisms derive some or all of their mobility from the deflection of flexible members. A pseudo-rigid-body model (PRBM) provides an elegant and simple way of modeling and analyzing traditionally nonlinear large-deflection problems pertaining to compliant mechanisms. In this work, several aspects pertainting to the dynamics of compliant mechanisms are considered. First, dynamic models are derived to predict not only the natural frequency of the large-deflection systems, but also the transient response, using the PRBM approach. A unique multi-stage damping model is developed to determine the transient response in free vibration. Recent works have neglected to consider the transient response …

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The Status Of Nonstatus, Geoggrey Heeren Jan 2015

The Status Of Nonstatus, Geoggrey Heeren

American University Law Review

Millions of unauthorized immigrants in the United States have no legal immigration status and live in constant fear of deportation. There are millions more who do have some sort of status, like lawful permanent residency, asylum, or a nonimmigrant visa. In between is the netherworld of nonstatus. Here live noncitizens who possess government documentation but few rights. They have no pathway to lawful permanent residence or citizenship and cannot receive most public benefits. If nonstatus is denied or revoked by a prosecutor or bureaucrat, there is no right to a hearing or an appeal. If the Executive Branch discriminates in …

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Bordering Persecution: Why Asylum Seekers Should Not Be Subject To Expedited Removal, Alvaro Peralta Jan 2015

Bordering Persecution: Why Asylum Seekers Should Not Be Subject To Expedited Removal, Alvaro Peralta

American University Law Review

No abstract provided.

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Shoot First, Ask Later: Constitutional Rights At The Border After Boumediene, Brittany Davidson Jan 2015

Shoot First, Ask Later: Constitutional Rights At The Border After Boumediene, Brittany Davidson

American University Law Review

Adopting Boumediene's functional approach in analyzing extraterritorial application of the United States Constitution at the U.S.-Mexico border will promote uniformity and provide guidance to courts and officials. Currently, courts are applying Verdugo-Urquidez's sufficient connections test, and different variations thereof permitting courts to arbitrarily decide who is entitled to constitutional protection in the absence of uniform precedent. Adopting Boumediene as the guiding test will not automatically trigger constitutional protection, instead, constitutional protection will only be granted if extending protection to an alien at the U.S.-Mexico border is justified based on the three-prong test.

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U.S. Tax Imperialism In Puerto Rico, Diane Lourdes Dick Jan 2015

U.S. Tax Imperialism In Puerto Rico, Diane Lourdes Dick

American University Law Review

No abstract provided.

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How The Perception Of God As A Transcendent Moral Authority Influences Marital Connection Among American Christians, Toshi Shichida, David C. Dollahite, Jason S. Carroll Jan 2015

How The Perception Of God As A Transcendent Moral Authority Influences Marital Connection Among American Christians, Toshi Shichida, David C. Dollahite, Jason S. Carroll

Faculty Publications

Dynamics that link individuals' perceptions of God as a transcendent moral authority and marital connection were analyzed in depth using qualitative data from a sample of 48 Christian spouses from California and New England. Thirsty-six individuals expressed their perception of God as a transcendent moral authority, and compared to 12 who did not, they conveyed three distinctive religious-marital dynamics. These were all processes to promote marital unity that engaged God, namely: (1) spouses modified their individual behavior in marriage with reference to their God model, (2) they shared as a couple the goal to obey God together, and (3) they …

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Validation Of The Intermountain Patient Perception Of Quality (Ppq) Survey Among Survivors Of An Intensive Care Unit Admission: A Retrospective Validation Study, Samuel M. Brown, Glen Mcbride, Dave S. Collingridge, Jorie M. Buter, Kathryn G. Kuttler, Eliotte L. Hirshberg, Jason P. Jones, Ramona O. Hopkins, Daniel Talmor, James Orme Jan 2015

Validation Of The Intermountain Patient Perception Of Quality (Ppq) Survey Among Survivors Of An Intensive Care Unit Admission: A Retrospective Validation Study, Samuel M. Brown, Glen Mcbride, Dave S. Collingridge, Jorie M. Buter, Kathryn G. Kuttler, Eliotte L. Hirshberg, Jason P. Jones, Ramona O. Hopkins, Daniel Talmor, James Orme

Faculty Publications

Background: Patients’ perceptions of the quality of their hospitalization have become important to the American healthcare system. Standard surveys of perceived quality of healthcare do not focus on the Intensive Care Unit (ICU) portion of the stay. Our objective was to evaluate the construct validity and internal consistency of the Intermountain Patient Perception of Quality (PPQ) survey among patients discharged from the ICU. Methods: We analyzed prospectively collected results from the ICU PPQ survey of all inpatients at Intermountain Medical Center whose hospitalization included an ICU stay. We employed principal components analysis to determine the constructs present in the PPQ …

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Obsidian Provenance Studies Of Sites In Northern Utah, Jeffrey Ferguson, James R. Allison Jan 2015

Obsidian Provenance Studies Of Sites In Northern Utah, Jeffrey Ferguson, James R. Allison

Faculty Publications

Previous studies of obsidian from archaeological sites in Utah Valley and the Salt Lake Valley have used relatively small samples to document temporal shifts in obsidian procurement, with southern sources (especially Black Rock) dominating Fremont assemblages, while most post-Fremont obsidian comes from the Malad source to the north. Our greatly expanded XRF analysis of almost 4,000 obsidian artifacts from sites in Utah and Salt Lake Valleys confirms the temporal change noted by earlier researchers, but also shows site- and source-specific patterns of obsidian use, as well as variation in the frequency of different obsidian sources in tools, debitage, and micro-debitage.

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Navigating The Faa’S Turbulent Airspace In The United States Regarding Uavs, Michael T. Searcy Jan 2015

Navigating The Faa’S Turbulent Airspace In The United States Regarding Uavs, Michael T. Searcy

Faculty Publications

There has been a significant increase in the use of UAVs throughout the world to aid in archaeological investigations. Unfortunately the current U.S. Federal Aviation Administration has enforced strict policies that prohibit most institutions and private firms to use these aerial vehicles. As a result archaeologists in the United States are falling behind in implementing an important tool in archaeological reconnaissance. This paper outlines the progress made thus far by the FAA to reform these regulations.

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Anna Julia Cooper: A Quintessential Leader, Janice Y. Ferguson Jan 2015

Anna Julia Cooper: A Quintessential Leader, Janice Y. Ferguson

Antioch University Dissertations & Theses

This study is a leadership biography which provides, through the lens of Black feminist thought, an alternative view and understanding of the leadership of Black women. Specifically, this analysis highlights ways in which Black women, frequently not identified by the dominant society as leaders, have and can become leaders. Lessons are drawn from the life of Anna Julia Cooper that provides new insights in leadership that heretofore were not evident. Additionally, this research offers provocative recommendations that provide a different perspective of what leadership is among Black women and how that kind of leadership can inform the canon of leadership. …

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Powerlessness Within A Budget-Driven Paradigm: A Grounded Theory Leadership Study From The Perspective Of Michigan Corrections Officers, Timothy Michael Eklin Jan 2015

Powerlessness Within A Budget-Driven Paradigm: A Grounded Theory Leadership Study From The Perspective Of Michigan Corrections Officers, Timothy Michael Eklin

Antioch University Dissertations & Theses

This study explored the lived-experiences of 15 correctional officers and 5 sergeants working in adult state-operated prison facilities in Michigan. In particular, this qualitative grounded theory study revealed the impact that budget driven decision-making had on the lives of correctional officers: its effect on institutional custody, security, and safety. The study finds that many recent policy changes resulted in a sense of powerlessness expressed by the participants of the study. Participants found themselves in a precarious position, situated in between the prison population and the administration. Having an understanding of how correctional officers make meaning of their work in relation …

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The Role Of Heart Rate Variability In The Treatment Of Migraines, Thomas M. Ledoux Jan 2015

The Role Of Heart Rate Variability In The Treatment Of Migraines, Thomas M. Ledoux

Antioch University Dissertations & Theses

This dissertation assessed the role of heart rate variability (HRV) in the treatment of migraine headaches. The extent of this relationship was measured through a 12-session HRV biofeedback protocol to increase HRV and decrease migraine frequency through resonance frequency breathing (RFB) training. This project used a single-case design methodology to analyze phase changes in physiological variables with a specific focus on changes in HRV and migraine symptoms from baseline to completion of the biofeedback protocol. The prevalence of migraine headaches is discussed, the history of biofeedback as an intervention for migraine is reviewed, and the rationale for the relationship between …

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The Personal And The Professional: Buddhist Practice And Systemic Therapists, Joanne R. Grassia Jan 2015

The Personal And The Professional: Buddhist Practice And Systemic Therapists, Joanne R. Grassia

Antioch University Dissertations & Theses

This dissertation consists of two articles. The first article presents a literature review of research on therapists’ personal and professional lives as practitioners of Buddhist meditation and psychotherapy in the past ten years. Nineteen articles were reviewed that met the inclusion criteria of a) between 2004 and 2014; b) exploring meditation; and c) studies related to therapist personal or professional lives. The results of the review identified four broad themes: a) presence and acceptance; b) empathy; c) countertransference; and d) self-care/compassion and gratitude. The content analysis indicated a positive association between therapist meditation practice and therapist qualities, both for personal …

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Living Aloha: Portraits Of Resilience, Renewal, Reclamation, And Resistance, Camilla G. Wengler Vignoe Jan 2015

Living Aloha: Portraits Of Resilience, Renewal, Reclamation, And Resistance, Camilla G. Wengler Vignoe

Antioch University Dissertations & Theses

When Native Hawaiians move away from the islands, they risk losing their cultural identity and heritage. This dissertation utilizes a Hawaiian theoretical framework based in Indigenous research practices and uses phenomenology, ethnography, heuristics, and portraiture to tell the stories of leadership, change, and resilience of five Native Hawaiians who as adults, chose to permanently relocate to the United States mainland. It explores the reasons why Kanaka Maoli (politically correct term for Native Hawaiians) leave the 'āina (land; that which feeds) in the first place and eventually become permanent mainland residents. Some Hawaiians lose their culture after relocating to the United …

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“El No Murio, El Se Multiplico!” Hugo Chávez : The Leadership And The Legacy On Race, Cynthia Ann Mckinney Jan 2015

“El No Murio, El Se Multiplico!” Hugo Chávez : The Leadership And The Legacy On Race, Cynthia Ann Mckinney

Antioch University Dissertations & Theses

“Chávez, Chávez, Chávez: Chávez no murio, se multiplico!” was the chant outside the National Assembly building after several days of mourning the death of the first President of the Bolivarian Republic of Venezuela. This study investigates the leadership of Hugo Chávez and his legacy on race as seen through the eyes and experiences of selected interviewees and his legacy on race. The interviewees were selected based on familiarity with the person and policies of the leadership of Hugo Chávez and his legacy on race. Unfortunately, not much has been written about this aspect of Hugo Chávez despite the myriad attempts …

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Creating Space For An Indigenous Approach To Digital Storytelling: "Living Breath" Of Survivance Within An Anishinaabe Community In Northern Michigan, Brenda K. Manuelito Jan 2015

Creating Space For An Indigenous Approach To Digital Storytelling: "Living Breath" Of Survivance Within An Anishinaabe Community In Northern Michigan, Brenda K. Manuelito

Antioch University Dissertations & Theses

As Indigenous peoples, we have a responsibility to our global community to share our collective truths and experiences, but we also deserve the respect to not be objectified, essentialized, and reified. Today, we are in a period of continual Native resurgence as many of us (re)member our prayers, songs, languages, histories, teachings, everyday stories and our deepest wisdom and understanding as Indigenous peoples--we are all “living breath” and we are “all related.” For eight years, Carmella Rodriguez and I have been nDigiStorytelling across the United States and have co-created over 1,200 digital stories with over 80 tribes for Native survivance, …

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A Phenomenological Study: Marriage And Family Therapists' And Clinician's Perceptions Of How Secondary Traumatic Stress Affects Them And Their Families, Norja Elizabeth Cunningham Jan 2015

A Phenomenological Study: Marriage And Family Therapists' And Clinician's Perceptions Of How Secondary Traumatic Stress Affects Them And Their Families, Norja Elizabeth Cunningham

Antioch University Dissertations & Theses

Multiple facets of clinicians' lives are influenced by compassion fatigue including physiological well-being, the perspective of clinicians in relation to the world, and psychological and emotional reactions to trauma triggers (Figley, 1998). Work stress research considers the systemic effects of stress on workers' relationships. Research also shows that romantic relationships are negatively influenced by work stress (Sanz-Vergel, Rodriguez, Bakker & Demerouti, 2012). This phenomenological study investigated the lived experience of three clinicians and how compassion fatigue was experienced in their relationships with their partners and children. Clinicians completed the Professional Quality of Life assessment and those with a score of …

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Weed Women, All Night Vigils, And The Secret Life Of Plants: Negotiated Epistemologies Of Ethnogynecological Plant Knowledge In American History, Claudia Jeanne Ford Jan 2015

Weed Women, All Night Vigils, And The Secret Life Of Plants: Negotiated Epistemologies Of Ethnogynecological Plant Knowledge In American History, Claudia Jeanne Ford

Antioch University Dissertations & Theses

This dissertation critiques the discourse of traditional ecological knowledge described as embedded in indigenous peoples' longevity in location, for the purpose of understanding the embodiment of ecological knowledge in culture. The aim of this research is to examine the historical and epistemic complexity of traditional ecological knowledge that may be both established from the length of time people reside in a specific ecosystem and constitutive of negotiations between and among different cultures. I choose the specific case of the negotiation of plant knowledge for women's reproductive health among Native, African, and European groups as those negotiations unfolded on the American …

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Character Strengths Of Students At Risk Of Dropping Out Of High School, Sarah Baker Jan 2015

Character Strengths Of Students At Risk Of Dropping Out Of High School, Sarah Baker

Antioch University Dissertations & Theses

The goal of this study was to determine the participants' perceptions about what strengths at-risk students who follow through and graduate from high school have, using the conceptual framework of positive psychology, and its classification system of virtues and character strengths. To reveal the strengths of these students, this study used a qualitative methodology, interpretive phenomenological analysis (IPA). In addition, the participants were asked to fill out a Likert scale survey to rate how frequently at-risk students who graduated employed each of the 24 VIA characteristics. The purpose of this study was to add to the under-researched area of identifying …

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