Digital Commons Network^™

Endovascular Thrombectomy For Mild Strokes: How Low Should We Go? A Multicenter Cohort Study, Amrou Sarraj, Ameer E. Hassan, Sean I. Savitz, James C. Grotta, Chunyan Cai, Kaushik N. Parsha, Christine M. Farrell, Bita Imam, Clark W. Sitton, Sujan T. Reddy

School of Medicine Publications

Background and Purpose:Endovascular thrombectomy (EVT) is effective for acute ischemic stroke with large vessel occlusion (LVO) and NIHSS ≥6. However, EVT benefit for mild deficits LVOs (NIHSS

Methods: A retrospective cohort of patients with anterior circulation LVO and NIHSSoutcome; mRS=0–2 was the secondary. Symptomatic intracerebral hemorrhage (sICH) was the safety outcome. Clinical outcomes were compared through a multivariable logistic regression after adjusting for age, presentation NIHSS, time-last-seen-normal-to-presentation, center, IV-alteplase, ASPECTS, and thrombus location. We then performed propensity score matching as a sensitivity analysis. Results were also stratified by thrombus location.

Results: 214 patients (EVT-124, medical management-90) were …

A Bridge Over Troubled Waters - Resolving Bank Financial Distress In Canada, Janis P. Sarra

All Faculty Publications

Effective June 2017, Canada formalized its new resolution regime for “domestic systemically important banks”. This article examines the new resolution regime in the context of the early intervention program by the financial services regulator. The system offers a complex but integrated set of mechanisms to monitor the financial health of financial institutions, to intervene at an early stage of financial distress, and to resolve the financially distressed bank in a timely manner. Resolution is the restructuring of a financially distressed or insolvent bank by a designated authority. To “resolve” a bank is to use a series of tools under banking …

Local Tax Incentives And Behavior Of Foreign Enterprises: Evidence From A Large Developing Country, Jing Xing, Wei Cui, Xi Qu

All Faculty Publications

We analyze how profit reporting and investment behavior of foreign enterprises respond to local tax incentives in China, a large developing country. Using firm-level data between 2000 and 2013 from China’s industrial enterprise survey, we first provide strong evidence for tax competition among Chinese cities (especially cities within the same province) over the average effective income tax rate. We then find that, despite stringent capital controls, both reported pre-tax profits and investment of foreign firms respond strongly to local tax incentives, suggesting that subnational tax competition in China is oriented towards both mobile profits and real resources.

Conceptualizing The Urban Commons: The Place Of Business Improvement Districts In City Governance, Alexandra Flynn

All Faculty Publications

Business Improvement Districts (BIDs) are self-taxed organizations that are comprised of businesses and property owners, are approved by city governments, and spend funds to improve profitability within certain neighbourhood boundaries. BID governance structures can also include neighbourhood residents and city councillors as voting or non-voting members. Numerous scholars have written about the role of BIDs in city governance, including the extent to which they improve or undermine inclusivity and accountability. This paper focuses on a related question that has not yet been deeply analysed in legal scholarship: can BIDs be considered a form of urban commons? The term ‘urban commons’ …

Recognizing The Relevance Of Human Rights: The Application Of The Presumption Of Conformity In The Context Of Copyright, Graham Reynolds

All Faculty Publications

This article discusses the application of the presumption of conformity with international law in the context of copyright. Although Canadian courts have applied the presumption of conformity in a number of copyright cases, no Canadian court has explicitly considered, under the presumption of conformity, whether interpretations of provisions of the Copyright Act are consistent with, or reflect the values and principles of, international human rights treaties that Canada has signed and ratified. In this article, I will argue that Canadian courts applying the presumption of conformity in the context of copyright should do so with reference to Canada’s obligations under …

Risk Of Unintended Pregnancy In Latina Young Adults: The Effect Of Gender Role Beliefs, Acculturation, And Depression, Jessica Block

Psychology Theses & Dissertations

This study investigated the effect of Latina gender role beliefs, or marianismo beliefs, on risk for unintended pregnancy by examining contraceptive method use in Latina young adults. Acculturation and depression were also examined as moderators of the association between marianismo and contraceptive method choice, as well as separately for their effects on contraceptive use. Unmarried, nulliparous Latina women aged 18-24 (N = 142) were recruited through online social media platforms. Data were collected in the United States in July 2017. Logistic regression analyses were performed to distinguish between women who utilized more effective v. less effective contraceptive methods in the …

A Scientific Approach To Understanding The Head Trauma Endured By A Mixed Martial Arts Fighter, John William Michael Sorbello

Mechanical & Aerospace Engineering Theses & Dissertations

The purpose of this research is to gain some insight on the type of head trauma an athlete may encounter during mixed martial arts (MMA) competition. These athletes endure continuous blows to the head throughout their training and fighting career. The knowledge obtained from this research may assist MMA athletes and trainers in assessing the way they train, how they compete and, more importantly, how long they choose to compete in their amateur or professional MMA career.

The analysis is performed by first creating a three-dimensional solid model of the human head based on geometric coordinates originally obtained from a …

Development And Evaluation Of Post-Production Oxygenation Techniques For The Augmentation Of Biochar, Matthew David Huff

Chemistry & Biochemistry Theses & Dissertations

Biochar is the carbon rich solid by-product of biomass pyrolysis. Interest in biochar can be broken down to several main categories: use as a carbon sequestration agent, use as a medium for the removal via adsorption of unwanted materials in wastewater, and as a soil amendment for the increase of cation exchange capacity (CEC). In order to generate a biochar which is stable enough for carbon sequestration, higher temperature pyrolysis must be used in order to ensure a lower O:C ratio in order to increase the half-life of biochar in soil. This dissertation addresses the evaluation of biochars made from …

Value Added Products From Lignin And Biomass Derivatives, Chen Li

Civil & Environmental Engineering Theses & Dissertations

Pyrolysis is one of the traditional lignin and biomass utilization methods. The liquid products bio-oil and solid products bio-char are the main value-added products from lignin pyrolysis. Due to the narrow application and low quality, using the pyrolysis method to produce bio-oil and bio-char cannot bring sufficient economic benefits. In this dissertation, two methods were investigated to improve the quality of lignin bio-products.

Instead of direct pyrolysis, chemical activation (pyrolysis) was introduced in this dissertation. Compared to bio-char, the lignin chemical activation product lignin-activated-carbon has better economic value. With the best activation conditions, the lignin-activated-carbon produced a surface area of …

Nondestructive Evaluation Of Concrete Bridge Columns Rehabilitiated With Fiber Reinforced Polymers Using Digital Tap Hammer And Infrared Thermography, Andrew Scott Wheeler

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nondestructive Evaluation of Concrete Bridge Columns Rehabilitated With Fiber Reinforced Polymers Using Digital Tap Hammer and Infrared Thermography Andrew Wheeler In 2017, the American Society of Civil Engineers (ASCE) gave bridges in the U.S. a C+ rating. Almost four out of every ten bridges are 50 years or older. In 2016, there were on average 188 million trips across a structural deficient bridge each day. With such a large number of bridges needing replaced or repaired, transportation officials are utilizing various bridge rehabilitation techniques to provide a cost effective solution to such a widespread problem. One rehabilitation technique involves the …

Approximation Of Quantiles Of Rank Test Statistics Using Almost Sure Limit Theorems, Mark Ledbetter

Mathematics & Statistics Theses & Dissertations

There are many problems in statistics where the analysis is based on asymptotic distributions. In some cases, the asymptotic distribution is in an open form or is intractable. One possible solution is the logarithmic quantile estimation (LQE) method introduced by Thangavelu (2005) for rank tests and Fridline (2010) for the correlation coefficient. LQE is derived from an almost sure version of the central limit theorem using the results of Berkes and Csaki (2001), and it estimates the quantiles of a test statistic using only the data. To date, LQE has been used in only a few applications. We extend the …

The Association Between Emotional Competencies And E-Cigarette Susceptibility, Laurel Brockenberry

Psychology Theses & Dissertations

The prevalence of e-cigarette use in young adults rose dramatically in the United States over the past decade. Nonetheless, our understanding of the motives that make young adults more susceptible to e-cigarette use remains limited. Risk factors associated with susceptibility to combustible cigarettes suggest that negative affect reduction outcome expectancies are positively associated with cigarette susceptibility in this age group. Further, emotion competencies, such as emotion regulation difficulties, distress tolerance, and positive and negative urgency have been positively associated with both susceptibility and negative affect reduction expectancies. Determining the role of negative affect reduction outcome expectancies on e-cigarette use requires …

Human-Robot Collaborative Force-Controlled Micro-Drilling For Advanced Manufacturing And Medical Applications, Parimal Mahesh Prajapati

Mechanical & Aerospace Engineering Theses & Dissertations

Robotic drilling finds applications in diverse fields ranging from advanced manufacturing to the medical industry. Recent advances in low-cost, and human-safe, collaborative robots (e.g., Sawyer) are enabling us to rethink the possibilities in which robots can be deployed for such tedious and time-consuming tasks. This thesis presents a robotic drilling methodology with features of force-control enabled micro-drilling and human-robot collaboration to reduce programming efforts and enhance drilling performance. A Sawyer robot from Rethink Robotics, which offers safe physical interactions with a human co-worker, kinesthetic teaching, and force control, is used as the test bed. The robot’s end-effector was equipped with …

Three Essays On Ceo Risk Preferences, And Ability, Corporate Hedging Decisions, And Investor Sentiment, Sonik Mandal

Finance Theses & Dissertations

The derivative hedging research has looked at why firms and how firms hedge and if it increases value for their shareholders. In this dissertation we investigate the relation between CEO risk preferences and ability and whether if affects their hedging decisions and firm value.

In our first essay, we challenge the theory and previous empirical evidence that showed CEO risk preferences affects hedging. Using a sample of Fortune 500 firms and 5 years of panel data, and using inside debt (i.e., CEO pension and deferred compensation) and the CEO Vega and CEO Delta, as proxies of CEO risk preferences, we …

Growth Media Alternatives For Mine Refuse Cap And Cover Systems, Sitraka Jean D'Annie Rabemanjakasoa

Graduate Theses, Dissertations, and Problem Reports (ETD)

In 1999, Royal Scot Minerals based in Greenbrier County, West Virginia, USA went bankrupt and abandoned a 47-acre coal refuse pile, which currently presents environmental and economic issues. The primary objective of this problem report is to identify an effective approach to create a growth layer that establishes a sustainable vegetation on this pile. Using available data in the relevant literature, this report evaluates topsoil substitutes using three materials: papermill sludge, sewage sludge and lumber mill waste application for coal refuse piles. Like papermill sludge, sewage sludge reduces erosion/sedimentation by improving the soil water holding capacity and decreases the surface …

Human-Intelligence And Machine-Intelligence Decision Governance Formal Ontology, Faisal Mahmud

Engineering Management & Systems Engineering Theses & Dissertations

Since the beginning of the human race, decision making and rational thinking played a pivotal role for mankind to either exist and succeed or fail and become extinct. Self-awareness, cognitive thinking, creativity, and emotional magnitude allowed us to advance civilization and to take further steps toward achieving previously unreachable goals. From the invention of wheels to rockets and telegraph to satellite, all technological ventures went through many upgrades and updates. Recently, increasing computer CPU power and memory capacity contributed to smarter and faster computing appliances that, in turn, have accelerated the integration into and use of artificial intelligence (AI) in …

Gust Alleviation System For General Aviation Aircraft, Lucas Coleman Mills

Mechanical & Aerospace Engineering Theses & Dissertations

A designed control motion scheme to improve passenger comfort in general aviation aircraft by reducing normal acceleration and pitch rate due to turbulence is investigated. An aerodynamic math model is created for ViGYAN’s Active Ride Improvement System flight article, a one-eighth scale Pilatus Porter PC-6 with conventional forward main wing, aft horizontal and vertical tails, and a single engine with tractor configuration. The test article incorporates a full-span gust flap and forward mounted gust sensor to mechanize the gust alleviation control system, and these features are present in the dynamic model. The model is a two degree of freedom linear …

Georgia's Bicentennial County Histories: The Present In The Past, David B. Parker

Faculty Articles

In honor of Georgia's Bicentennial (1733-1933), the General Assembly urged each county to appoint a historian to write its history. This article describes those county histories and the people who wrote them, and it concludes that these books "tell us as much about the historians (and their audiences) as about the past they described."

Flexible High-Density Puzzle Storage Systems, Ehsan Shirazi

Graduate Theses, Dissertations, and Problem Reports (ETD)

In a traditional storage system, when one of the mechanical or electrical parts or the software fails to operate correctly, it may lead to the failure of the entire system imposing huge costs to the system (Gue et al., 2014). However, in a grid storage network, if a grid fails to operate, the system continues to operate. Therefore, failure of a system component will not jeopardize the whole system functionality. As such, reliability is one of the key advantages of grid storage networks. Another benefit of grid storage systems is flexibility. Various systems such as GridFlow, GridPick, GridStore, are developed …

Circus Arts Therapy Shows Clinical Benefits, Lauren Taglialatela, Circus Arts Institute

Faculty Articles

No abstract provided.

Forecasting Future Energy Production Using Hybrid Artificial Neural Network And Arima Model, Maryam Khodaverdi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research is to obtain an accurate forecasting model for the amount of electricity (in kWh) that is generated from different primary energy sources in the U.S. In this research, Artificial Neural Network (ANN) and hybrid ARIMA and ANN algorithms were developed that can be used for forecasting the amount of energy production in the short, as well as, in the long run. Based on the inferences made from the available data provided by Energy Information Administration from January 2004 to December 2014, two different forecasting models for each primary energy source were constructed. These two models …

Regional Sea Level Rise Along The United States Coasts, Alessandra G. Burgos

OES Theses and Dissertations

Over the past several years, there has been several studies focused on reconstructing global mean sea level (GMSL) for the 20th century, along with projecting rates out into the future. Of greater importance for mitigation and adaptation plans, however, is the rate of local or regional sea level (RSL) rise. Ocean dynamics along with changes in Earth’s gravitational field can cause RSL to deviate from the change in GMSL. During the satellite altimeter era covering the past two decades, RSL trends can be four times the global average, with much of this spatial variation due to internal climate variability. Isolating …

Exploring Critical Success Factors Of Community Development Projects, Kevin Wanjama Muchiri

Engineering Management & Systems Engineering Theses & Dissertations

The utilization of Community Development Projects in developing nations continues to increase in significance. In the wake of the latest Sustainable Development Goals, developing nations are working towards eliminating poverty, promoting sustainable cities and communities, gender equality, and health and well-being. Although Community Development Projects have become prevalent, the challenge has been that some are successful, while others fail. This dissertation investigates what makes Community Development Projects successful.

This dissertation implemented a comprehensive quantitative analysis using data collected from over one hundred community development projects obtained from The World Bank database. These projects took place in developing nations around the …

Nondestructive Evaluation Of Frp Composite Bridge Componenets Using Infrared Thermography And Digital Tap Tesing, Ruben Mangal Joshi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Aging of civil infrastructures is one of the major problems faced by the engineering industry today, with the concrete structures cracking and the steel reinforcement corroding due to exposure to deicing chemicals, resulting in shorter service life. An alternative to the degrading infrastructures made of concrete and steel is the use of Fiber Reinforced Polymer (FRP) composites, which are noncorrosive. Use of FRP as structural components such as bridge decks and retrofitting jackets can solve the problem of aging with enhanced durability in future constructions. But, proper installation of newer material in structurally important infrastructure requires a reliable method of …

The Quality Of Mercy, Kerry Mcnamara

English Theses & Dissertations

The Quality of Mercy is a hybrid of memoir and reportage, the story of a daughter’s love and her father’s journey through his vocation to the Catholic Church, his entry in the priesthood and his years of missionary work. Not many people discover in their teenage years that their father had been a celibate Catholic priest. Not many have the opportunity to trace their father’s story through diaries, interviews, and recollections. The Quality of Mercy is both a window into the world and a mirror into the soul, a daughter’s attempt to tell her father’s unique tale.

Community College Students' Deep Learning Approaches In Oer Courses, Kim Ellen Grewe

Educational Leadership & Workforce Development Theses & Dissertations

Open Educational Resources (OER) have the potential to bridge the gap for community college students not only because they are more affordable or provide access but also because they have the potential to make learning more meaningful for these same students. Although issues related to access and affordability have been extensively researched, less is known about the ways in which OER use may impact community college students’ deep approaches to learning. More qualitative research around OER efficacy from the student perspective is needed. The purpose of this study was to describe the ways students use OER and how students’ OER …

Lack Of Delayed-Type Hypersensitivity In Striped Bass (Morone Saxatilis), Jessica Shannon Miller

Biological Sciences Theses & Dissertations

Mycobacteriosis is a fatal disease in fishes caused by acid-fast bacteria in the genus Mycobacterium. This disease impacts aquaculture, aquariums, and wild fishes. Unfortunately, there are currently no non-lethal diagnostic tests for mycobacterial infection in fishes. Type IV delayed type hypersensitivity (DTH) responses in vivo and in vitro are currently used for the non-lethal detection of mycobacterial infections in humans and in animals; however, there is little information available on DTH responses in fishes. In this work, we examine in vivo DTH response in Striped Bass (Morone saxatilis), an important U.S. Eastern seaboard fish species, experimentally …

A Workforce Development Study To Explore Current Demand For Industry-Recognized Credentials, Debra Kay Smiley

Educational Leadership & Workforce Development Theses & Dissertations

In this descriptive research study, I identified industry-recognized workforce credentials that are or will be in high demand by employers operating in Virginia. I surveyed a targeted group of Virginia workforce development stakeholders including 17 Virginia Community College System workforce development leaders who represent each local community college, 47 Virginia local and regional economic development directors, and 11 Virginia Workforce Innovation Opportunity Act directors. Due to the economic disparity between rural and urban areas, I also examined the contrast between high-demand credentials needed by employers in rural and urban areas.

The findings revealed that the top two industry-recognized credentials were …

A Continuum Of Care: School Librarian Interventions For New Teacher Resilience, Rita Reinsel Soulen

Teaching & Learning Theses & Dissertations

School librarians occupy a unique position to offer supports for first year teachers to build resilience, reduce burnout, and ensure retention. The researcher used the psychology theory of resilience to develop the Continuum of Care model which initiates in mentoring and moves toward a collaborative partnership. Fifteen school librarians in one urban district recruited 26 new teachers in their schools to form the treatment group. All new teachers in the district were surveyed to establish their initial level of resilience and collect demographics. A comparison group of 26 new teachers were matched by scores on a resilience scale at the …

The Effects Of Risky Alcohol Use And Type Of Hook Up Behaviors On The Relationship Between Hooking Up To Cope And Negative Affect, Leah E. Stevens

Psychology Theses & Dissertations

Hook up behaviors are sexual behaviors that participants engage in consensually without the expectation of a romantic commitment, and occur frequently in the college context and often co-occur with binge drinking. Research indicates several factors (i.e., alcohol intoxication, type of sexual behavior, specific motives for hooking up, gender) are predictors of negative emotions associated with hook up experiences, such as regret, shame, confusion, and disappointment. Using hooking up as a coping mechanism coupled with experiencing negative emotions due to hook up experiences are associated with aspects of poor mental health such as depression and anxiety. Therefore, the present sought: (1) …