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Identifying Shallow Subsurface Stratigraphy And Voids Using Dispersive Characteristics Of Electromagnetic And Surface Waves, Payman Hajiani

Doctoral Dissertations

"This dissertation presents the results of three manuscripts on spectral analysis of electromagnetic and seismic surface waves to detect subsurface stratigraphy and voids. In the first manuscript, a new technique was developed by utilizing spectral analysis of surface waves to detect subsurface openings. This technique applied the concept of group delay to evaluate the effects of subsurface voids on the phase shift domain. Seismic data sets were acquired at different sites where the shape, size, and depth of the void varied. In all surveys, the time delay technique precisely identified the locations of the subsurface openings. The second manuscript presents …

Evaluation Of Highly Viscous Polymeric Fluids And Recrosslinked Degraded Gel, Danlu Zhang

Masters Theses

”This work presents the evaluations of two products. One can be used for hydraulic fracturing to achieve viscosity stable under high shear rate, and the other is potential to be applied to enhance oil recovery from mature oilfield.

The first experiment is to synthesize and evaluate a new polymeric fracturing fluid that can resist high shear rate of 511^-1 with favorable viscosity. Zirconium crosslinked fracturing fluids are lack of self-healing ability after shearing, and the difficulties still exist in maintaining viscous with lower polymer content exposed to high shearing conditions, therefore, the research is trying to develop a new …

Relationship Between Fasting Plasma Glucose Levels And Maternal Food Group And Macronutrient Intakes In Pregnancy, Laura Mullaney, Aisling Brennan, Shona Cawley, Amy C. O'Higgins, Daniel Mccartney, Michael J. Turner

Articles

Aim Increased maternal body mass index (BMI) has been consistently associated with elevated blood glucose levels during pregnancy. Studies to date investigating the relationship between maternal blood glucose levels and dietary intake have shown mixed results. We investigated the association between maternal fasting plasma glucose (FPG) levels and food group and macronutrient intakes in the first trimester of pregnancy, after adjustment for maternal bodyweight.

Methods Women were recruited after sonographic confirmation of an ongoing singleton pregnancy in the first trimester. Dietary information was collected using the validated Willett Food Frequency Questionnaire. Maternal height and weight were measured and BMI calculated. …

Use Of A Web-Based Dietary Assessment Tool In Early Pregnancy, Laura Mullaney, Amy C. O'Higgins, Shona Cawley, R. Kennedy, Daniel Mccartney, M.J. Turner

Articles

Background Maternal diet is critical to fetal development and lifelong health outcomes. In this context, dietary quality indices in pregnancy should be explicitly underpinned by data correlating food intake patterns with nutrient intakes known to be important for gestation.

Aims Our aim was to assess the correlation between dietary quality scores derived from a novel online dietary assessment tool (DAT) and nutrient intake data derived from the previously validated Willett Food Frequency Questionnaire (WFFQ).

Methods 524 women completed the validated semiquantitive WFFQ and online DAT questionnaire in their first trimester. Spearman correlation and Kruskal–Wallis tests were used to test associations …

Factors Influencing The Adoption Of Smart Wearable Devices, Apurva Adapa

Masters Theses

"This study aims to examine the factors and issues in adoption of smart wearable devices. Wearable devices have many functions to offer which make them very useful in our daily lives. However, factors influencing the adoption of these devices are not well understood. This research explores the inhibiting and contributing factors influencing the adoption of wearable devices by employing the laddering approach. Qualitative data were collected through in-depth interviews using the laddering technique in order to understand these factors. Wearable devices that were examined include the Smart Glass (Google Glass) and the Smart Watch (Sony Smart Watch 3). After the …

The Microenvironment Of Visceral Adipose Tissue And Liver Alter Natural Killer Cell Viability And Function, Melissa J. Conroy, Vivienne Fitzgerald, Suzanne Doyle, Shauna Channon, Zivile Useckaite, Niamh Gilmartin, Cliona O'Farrelly, Narayanasamy Ravi, John V. Reynolds, Joanne Lysaght

Articles

The role of NK cells in visceral adipose tissue (VAT) and liver inflammation in obesity is not fully understood. This study investigated the frequency, cytokine expression, chemokine receptor, and cytotoxicity receptor profile of NK cells in the blood, omentum, and liver of patients with the obesity-associated cancer, oesophageal adenocarcinoma (OAC). The effect of chronically inflamed tissue microenvironments on NK cell viability and function was also examined. We identified significantly lower NK cell frequencies in the liver of OAC patients compared with healthy controls and within the omentum and liver of OAC patients compared with blood, whereas IL-10-producing populations were significantly …

Negotiating Cultural Spaces In An International Mobile And Blended Learning Project, Charlotte Nirmalani Gunawardena, Agnieszka Palalas, Nicole Berezin, Caitlin Legere, Gretchen Kramer, Godwin Amo-Kwao

University Libraries & Learning Sciences Faculty and Staff Publications

This paper explores the cultural spaces that had to be negotiated by a team of North American and Ghanaian partners when designing, developing and implementing a mobile and blended learning solution to train physician assistants in Ghana. In addition, it examines how these cultural spaces correspond to five mobile and blended learning spaces: temporal, physical, transactional, technological and pedagogical. Employing qualitative narrative inquiry and paradigmatic analysis procedures, we analyzed six types of data to determine the cultural spaces that emerged. Results indicate that cultural spaces were most often negotiated in the transactional mobile and blended learning space and included: identity …

Notes From The Editors, Erin Mccarthy, Lisa Trivedi, Tami Blumenfield

Asian Studies Publications

It gives us great pleasure to publish our first issue of ASIANetwork Exchange: A Journal of Asian Studies for the Liberal Arts as a part of the Open Library of the Humanities (OLH)!

When The Fourth Estate Becomes A Fifth Column: The Effect Of Media Freedom And Social Intolerance On Civil Conflict, Marc L. Hutchison, Salvatore Schiano, Jenifer Whitten-Woodring

Political Science Faculty Publications

Media freedom is typically viewed as crucial to democracy and development. The idea is that independent news media will facilitate free and fair elections and shine a spotlight on corruption—thereby serving as a fourth estate. Yet political leaders often justify restricting media freedom on the grounds that irresponsible news coverage will incite political violence—potentially undermining government and in effect acting as a fifth column. So is media freedom a force for democracy or a source of civil conflict? We hypothesize that the effect of media freedom on civil conflict is conditioned by a country’s level of intolerance. Specifically, we predict …

When Partisans And Minorities Interact: Interpersonal Contact, Partisanship And Public Opinion Preferences On Immigration Policy, Shanna Pearson-Merkowitz, Alexandra Filindra, Joshua J. Dyck

Political Science Faculty Publications

Objective: Many studies investigating contact theory have suggested that contact effects are not universal but rather conditional. In this article, we test one form of conditional contact effects. Our approach posits that contact with out-groups produces support for pro-minority public policies only when in-group members are not subject to contrary messages from co-partisans.

Methods: We use data from an original survey to test this theory in the immigration policy domain.

Results: We find strong confirmatory evidence that the emergence of contact effects on support for a path to citizenship for undocumented immigrants is dependent on party identification. …

Social Media, Public Discourse And Civic Engagement In Modern China, Yinjiao Ye, Ping Xu, Mingxin Zhang

Political Science Faculty Publications

Drawing on the theoretical view of cyberspace’s role in engagement in public discourse and civic activities, the current study investigates how social media use is related to public discourse and civic engagement in mainland China. Moreover, we examine how political interest, general trust in people, and life satisfaction modify the interdependence of social media use and public discourse and civic engagement. Data analyses based on a survey of 1, 202 online Chinese show that social media use is significantly related to both public discourse and civic engagement. In addition, political interest has a consistent, strong modification on the role of …

Does Global Market Integration Weaken Opinion-Policy Congruence In The American States?, Bret Anderson, Brian S. Krueger, Ping Xu

Political Science Faculty Publications

Theories of economic globalization suggest that public opinion-public policy congruence should be affected by a state's degree of integration with international markets. With as much attention researchers have given to the opinion-policy linkage in the American states, it is surprising that this literature has neglected these well-known globalization frameworks. We take advantage of the wide variation in U.S. states’ integration in global markets, public policies, and political orientations of citizens, to assess whether global market integration depresses the association between citizen opinion and public policies. Using three decades of state-level data, our results suggest that high global market integration does …

Trust In China? The Impact Of Development, Inequality, And Openness On Political Trust Across China’S Provinces, 2001-2012, Marc L. Hutchison, Ping Xu

Political Science Faculty Publications

China has long represented a puzzle for scholars of democracy, who view political trust as an important indicator of regime legitimacy. Previous studies show that while democracies around the world experienced declining levels of political trust, the authoritarian Chinese government maintained unexpectedly high levels of trust. Using World Value Survey (WVS) data over a critical twelve-year period (2001-2012) and multilevel modeling techniques, we explore both macro- and individual-level determinants of political trust in China. We find that province-level economic performance and individual level income combine to influence political trust. Higher levels of individual-level income have a positive effect on trust …

Table Of Contents

Journal of Strategic Security

No abstract provided.

Defeating Isis On The Battle Ground As Well As In The Online Battle Space: Considerations Of The “New Normal” And Available Online Weapons In The Struggle Ahead, Anne Speckhard, Ph.D., Ardian Shajkovci, Ph.D., Ahmet S. Yayla, Ph.D.

Journal of Strategic Security

The United States and its allies continue to achieve significant military victories against ISIS (otherwise known as ISIL or the “Islamic State”). The loss of territories resulting from military victories is especially important given that ISIS relies in part on recruits from the territories it controls. Efforts have also been directed at killing the group’s core leadership; stemming the flow of foreign fighters to Iraq and Syria through tightening up border security and surveillance; and targeting militant jihadi narratives and propaganda that is pushed out by ISIS on a twenty-four/seven basis via the Internet and social media platforms. In such …

Wicked Problems: How Complexity Science Helps Direct Education Responses To Preventing Violent Extremism, Lynn Davies

Journal of Strategic Security

This article draws on the insights from complexity science to outline potential strategies within education which could interrupt the spread of violent extremism. It first identifies three problems in examining extremism - definitions, causes and targets—before arguing for a focus on systems, not individual learners. Within systems, diversity is needed for emergence, and narrow, hard secularism is rejected in favor of a dynamic secularism which encourages a variety of belief systems in order to guard against polarization. The systems of education, religion, law and of terrorism itself are analyzed to identify entry points and vulnerabilities. After looking at the theories …

I See! Scotland: Tackling Sectarianism And Promoting Community Psychosocial Health, Eolene M. Boyd-Macmillan, Patricia Andrews Fearon, Amanda M. Ptolomey, Laura J. Mathieson

Journal of Strategic Security

We developed and tested through two studies a new intervention run as a course, I SEE! Scotland, to reduce and prevent Protestant-Catholic sectarianism in Scotland, a historic inter-group conflict expressed in forms ranging from polite to violent, within a wider population that includes those who feel untouched. Designed to reflect the social ecology of Scotland and engage individuals regardless of sectarian involvement, the intervention aimed to increase cognitive complexity, measured as integrative complexity, through participatory theatre and experiential methods. We hypothesised that the confluence of experiential learning to support multiple forms of self, other, and systems awareness with narrative framing …

Increasing Cognitive Complexity And Collaboration Across Communities: Being Muslim Being Scottish, Eolene M. Boyd-Macmillan

Journal of Strategic Security

Being Muslim Being Scottish (BMBS) joins a family of IC interventions, Being Muslim Being British (BMBB) and Being Kenyan Being Muslim (BKBM). Like BMBB and BKBM, the newest family member, BMBS, is designed to increase cognitive complexity management by enabling participants to identify and access a wider range of their own values (value pluralism). Increased cognitive management capacities enable movement from rapid, inflexible, closed, black and white thinking that sees no validity in other viewpoints toward more deliberate, flexible, open thinking that can tolerate shades of grey, and see validity in other viewpoints without sacrificing one’s core values. Piloted …

An Ic Intervention For Post-Conflict Northern Ireland Secondary Schools, Eolene M. Boyd-Macmillan, Claire Campbell, Andrea Furey

Journal of Strategic Security

Without carefully planned, sustained resourcing of children and young people, post-conflict Northern Ireland (NI) may fail to flourish. In May, 2016, MI5 (the UK domestic security agency) increased the security threat level from moderate to substantial for NI related terrorism. For over two years we have been partnership building in post-conflict NI to produce a plan for developing an evidence-based integrative complexity resource for NI secondary schools. Integrative complexity interventions have been shown effective at increasing capacities in a range of contexts, on different conflicts and extremisms, with diverse population samples (evaluated using the cross-culturally validated integrative complexity measurement frame). …

Latent Memories Of Terror: Media Perceptions Of The Woolwich Attack, Logan Stickel

Journal of Strategic Security

The Woolwich Attack of 2013 remains a distinctive case of lone wolf terrorism in terms of its hyper violent theatricalization and symbolic presentation of user-generated content. Although being described as having a paradigmic effect on the way terrorism is viewed and presented, its relationship to traditional media is under examined. To understand the perceptive impact, an exploratory qualitative research project was designed to gauge public views in terms of event presentation by media modality. Primary data was collected through interviews upon a theoretical sampling of fifteen Londoners and interpreted using a framework analysis technique. Results indicated that the main mode …

Defeating Jihad: The Winnable War. By Dr. Sebastian Gorka. Washington, D.C.: Regnery Publishing, 2016., Mark J. Roberts

Journal of Strategic Security

No abstract provided.

Synthesis And Photonic Sintering Of Bioresorbable Zinc Nanoparticle Ink For Transient Electronics Manufacturing, Bikram K. Mahajan

Masters Theses

"Zinc is an essential 'trace element' that supports immune systems, and is required for DNA synthesis, cell division, and protein synthesis. Zinc nanoparticles (Zn NP) has antibacterial properties and potential to be used in biodegradable printed electronics devices. The research presented here is about the synthesis of Zn NP and their potential use in transient electronics devices. In Paper 1, a technique of room temperature synthesis of Zn NP is reported using ball milling. Controlled amount of PVP was mixed in the solvent to stabilize the Zn particles and minimize cold welding during milling. The size of the produced Zn …

Biodegradable Electronic And Optical Devices Toward Temporary Implants, Md Shihab Adnan

Masters Theses

"Implantable biomedical devices have a high potential to revolutionize health care technologies in near future. Implantable devices can be classified as permanent prosthetic devices such as pacemakers or nerve stimulants and temporary devices for intermediate monitoring and control scenario which are still in research phase. In contrast to permanent device, temporary implants lose functionality and become unnecessary after intended operational lifetime which may pose serious electromagnetic and biomedical safety concern, latent complications at the implanted sites and possible ethical issues if not removed from body by an additional surgical operation.

The first paper of this thesis focuses on exploring the …

Material Properties Characterization For Multilayer Pcb And Peec Macromodels For Above Plane Decoupling Capacitors, Xiang Fang

Masters Theses

"Accurate frequency-dependent dielectric properties are important for accurate modelling of signal and power integrity problems. And decoupling capacitors perform an important function in the impedance reduction of power distribution systems. Hence, precise dielectric properties and micromodels for decoupling capacitors are the key parts for the signal and power integrity design.

In Section 1, the existing method for extracting dielectric properties from fabricated multilayer printed circuit boards based on the measured electrical property of fabricated transmission lines is introduced and validated using simulations. And the potential errors in the procedure are discussed. After that Djordjevic-Sarkar causal dielectric model for dielectric properties …

Phytoforensics Tools: The Degradation And Detection Of Chlorinated Solvents In Integrated Systems, Tommy J. Goodwin Jr.

Masters Theses

"Due to decades of mismanaged pollutants entering groundwater, subsurface pollution of various compounds has become a widespread challenge. Chlorinated solvents are the most common groundwater contaminants that persist in aquifers, and remediation of these wide-spread plumes is difficult. Bioremediation, permeable reactive barriers, and phytoremediation are remedial technologies that have been developed and applied to chlorinated solvents in groundwater systems. This study integrates these technologies in different combinations to demonstrate the remediation potential of this approach. Zerovalent iron (ZVI) and bioaugmentation with a Dehalococcoides sp. (DHC) culture were applied separately and in combination for degradation of perchloroethene (PCE). Salix pentandra were …

Iron Phosphide Nanostructures As An Efficient Bifunctional Catalysts For Water Splitting, Nikitaa Ashokan

Masters Theses

"The first part of this thesis work focuses on developing a bifunctional catalyst for electrochemical water splitting encompassing both oxygen and hydrogen evolution. A highly efficient catalyst is necessary to improve kinetics of the sluggish four electron process for oxygen evolution reaction (OER) and two-electron process for hydrogen evolution reaction (HER). Recently, transition metal phosphides have gained increasing interest in this field because of their good electrical conductivity properties as well as better catalytic activity. Many transition-metal phosphides are being considered for this application and iron phosphide (FeP) has proved to be a good HER catalyst. In this work, we …

Experimental Evaluations Of Selected Sealants To Remediate Co₂ Leakage, Aaron Jeffrey Blue

Masters Theses

"Carbon Dioxide (CO₂) sequestration into porous and permeable brine-filled aquifers is seen as one of the most feasible solutions for reducing the amount of greenhouse gases released into the atmosphere from coal-fired power plants. To safely store the CO₂, it must be trapped under an impermeable rock acting as a seal. One of the concerns with CO₂ sequestration is the generation of new fractures or reopening of existing fractures caused by CO₂ injection in the sealing formation. This project evaluates the potential of sealing these fractures by injecting sealing materials into them. These sealing …

Silicone Hollow Fiber Membrane Bioreactors For Mixed Aerobic And Anaerobic Treatment Of Gas Phase Toluene And Trichloroethylene, Alexander Lee Korff

Masters Theses

"Volatile Organic Compounds (VOCs) are common in effluent waste streams from many sectors of industry and low-cost emission control technologies have the potential to mitigate long-term impacts on the environment. Federal Regulations, such as the Clean Air Act and National Emission Standards for Hazardous Air Pollutants (NESHAPS), as well as state regulations are imposing stricter requirements on point-source emissions, with an emphasis on toxic VOCs. Trichloroethylene (TCE) and tetrachloroethylene (PCE), which are toxic VOCs, have been used since the 1920's for a variety of industrial applications like: degreasing, paint and printing operations, as extraction solvents, and for cleaning and drying …

Automated Channel Emulator Based On Mems Switch And Improvement Of Signal Transition, Jingdong Sun

Masters Theses

"Channel Emulator, which is widely used in communication system development, is an instrument that emulates the real-world signal propagation environment between transmitter and. [sic] To overcome the disadvantages of traditional channel emulator, we propose a novel structure of the automated channel emulator in Section 1, which can be controlled by software and integrated into auto-testing system. MEMS switch, with good RF performance, is used to connect and isolate multiple channels.

In Section 2, we divide the whole channel emulator system into Channel, Support, and Controller Board, and provide detailed design procedures with critical parameters of each board. The well-designed high …

Effect Of Reservoirs Heterogeneity On Injection Pressure And Placement Of Preformed Particle Gel For Conformance Control, Ze Wang

Masters Theses

"Preformed particle gels (PPG) have been successfully applied as a plugging agent for plugging fractures and then divert displacing fluid into poorly swept zones. However, PPG propagation and plugging mechanisms through open fractures have not been studied thoroughly.

This work investigated the influence of some factors (particle size, brine concentration, heterogeneity, and brine salinity) on gel injectivity, plugging performance for water flow through open fractures. Five-foot tubes were used to mimic open fractures. Three models were designed to conduct the work, including (1) single fracture with uniform fracture width, (2) single fracture with different widths, and (3) two parallel fractures …