Digital Commons Network^™

Using The Greet Model To Analyze Algae As A Feedstock For Biodiesel Production, Christopher Tatum

Masters Theses and Doctoral Dissertations

There is a growing interest in renewable, carbon-neutral biofuels such as ethanol and biodiesel. A life-cycle analysis is conducted in this study to determine the viability of using algae as a feedstock for biodiesel. The method involves assessing energy use, fossil fuel use, greenhouse gas emissions, and criteria pollutant emissions using a simulation developed by Argonne National Laboratory. The energy and emissions of algae-derived biodiesel are compared to those of soybean biodiesel, corn ethanol, conventional gasoline, and low-sulfur diesel. Results show that there are sizeable greenhouse gas emission benefits attributed to the production of both types of biodiesel as compared …

Sediment Based Turbidity And Bacteria Reduction Analysis In Simulated Construction Site Runoff, James W. Berry Iii

All Theses

Large construction projects are highly vulnerable to sediment removal by erosive forces. Turbidity, resulting from this excess sediment, has gained recognition as anindicator of pollution in surface runoff from construction activities. The Environmental Protection Agency (EPA) is currently moving toward regulations that would establish a nationwide maximum turbidity effluent limit discharged from construction sites. Research has shown that current sediment control best management practices (BMPs) are often ineffective at controlling elevated turbidity levels in construction site discharges. Additionally, research confirms that sediment basins may act as reservoirs for bacteria, specifically Escherichia coli (E. coli). During rainfall events, resuspension within sediment …

De-Embedding In High Speed Design, Don Degroot, David Dunham

Faculty Publications

No abstract provided.

Attributions For Interpersonal Healthcare Mistreatment And Continuity Of Care, Daniel Joel Northington

Loma Linda University Electronic Theses, Dissertations & Projects

Although continuity of cancer-related care increases the use of early detection cancer screening exams (Doescher, Saver, Fiscella, & Franks, 2004), and thereby improves treatment outcomes (Mandelblatt et al., 2009), Latino (Latina) women in the U.S. currently report lower continuity of care than non-Latino White (Anglo) women (American Cancer Society, 2010; Doescher, Saver, Fiscella, & Franks, 2001). Such disparities may be due, in part, to interpersonal healthcare mistreatment (Smedley, Stith, & Nelson, 2003), as well as mistreatment-related attributions and emotions (Betancourt, Flynn, & Ormseth, 2011; Tucker, 2008). Therefore, according to Weiner's model of attribution and emotion (1986) as well as Betancourt's …

Performance Of Number Of Factors Procedures In Higher Order Analysis: A Comparative Study, Marc Thomas Porritt

Loma Linda University Electronic Theses, Dissertations & Projects

Exploratory Factor Analysis (EFA) is one of the primary statistical tools available for the verification of the structure of a psychological measure. In the case of a nested test the structure of the higher levels is verified by performing EFA on the factor scores of the lower levels, a process known as higher order factor analysis (HOFA). One of the most significant decisions made during the EFA process is how many factors to extract. A number of methods have been developed to empirically answer this question. These methods have been proven highly accurate under normal circumstances. Since HOFA is an …

Assessment Of The Impact Of Integrated Simulation On Critical Thinking And Clinical Judgment In Nursing Instruction, Rita Allen Meyer

Theses and Dissertations

The purpose of this study was to explore the effects of using simulation and didactic instruction on critical thinking and clinical judgment with student nurses enrolled in a fall semester medical-surgical class. Specifically, it was of interest to compare the performance of these fall semester nursing students with the performance of nursing students enrolled in a spring semester class who received only didactic instruction.

The study consisted of 18 participants who were nursing students enrolled in the senior level Adult Medical-Surgical 111, the third medical-surgical class in the curriculum. There were two non-randomized groups. The experimental group received the intervention, …

Spatial Dimensions Of Conflict-Induced Internally Displaced Population In The Puttalam District Of Sri Lanka From 1980 To 2012, Deepthi Lekani Waidyasekera

Theses and Dissertations

During and after the Sri Lankan civil conflict of 1983-2009, the island’s Internally Displaced Population (IDP) became a key constituency requiring the central government4s attention. Thus, it is important to ask: What are the spatial dimensions and socio-economic implications of Sri Lanka’s Puttalam District IDPs? Archival and contemporary sources from various disciplines were utilized when reviewing the literature and revealed widely divergent opinions about the historical geography and the current initiatives regarding IDPs. The research study’s mixed method approach combined qualitative and quantitative techniques. Data collection extensively relied upon secondary sources from the Sri Lankan government and the United Nations. …

Six Discourse Markers In Tunisian Arabic: A Syntactic And Pragmatic Analysis, Chris Adams

Theses and Dissertations

The following study is a description and analysis of six discourse markers in Tunisian Arabic. In it I will attempt to determine the syntactic and pragmatic roles of each marker, describing its function in discourse. The final analysis will be based on the pragmatic model of relevance theory.

I have based my study on thirty-two (32) texts in Tunisian Arabic, looking at frequently-occurring discourse markers in these texts and analyzing them based on their discourse roles in terms of local cohesion and pragmatic inference.

The conclusions of this study focus on the conceptual and procedural content of each discourse marker. …

Assessing The Impacts Of Dams On Nutrient And Sediment Loading In The Kalamazoo River Using The Soil And Water Assessment Tool (Swat), Daniel Henry Serfas

Masters Theses

The Soil and Water Assessment Tool (SWAT) was applied to the Kalamazoo River Watershed in order to evaluate the impacts that several dams within a superfund site "Area of Concern" have on the sediment, nutrients, and streamflow of the system. It was hypothesized that the SWAT model could be used to recreate the watershed in hopes of estimating the amounts of nitrogen, phosphorus, and sediment that would result from the removal of the dams. The model would then be used to evaluate dam removal scenarios to come up with a best management practice (BMP).

The model was calibrated, however, during …

Agriculture, Influence, And Instability Under The Ancien Régime: 1708-1768, Adam J. Polk

Masters Theses

The French Revolution has been studied from myriad perspectives. The majority of scholarship focuses on the political and urban chaos of the times. Agricultural conditions and the influence of onerous taxation and stagnant agricultural options are given only a cursory examination in most research. This thesis aims to investigate the relationship between agronomic and environmental conditions and the eruption of violence in urban centers during the French Revolution and the years leading up to it (1708-1768). This period prior to the French Revolution serves as a template to investigate the nature of the rural-agricultural influences, with a particular focus paid …

Scopolamine-Induced Dry Eye Model In Female Rats, Ryan Alderson

Masters Theses

The objective of this study will be to establish, validate, and characterize a dry eye model in female rats induced by continuous systemic administration of scopolamine via Alzet® osmotic pumps for 28 days. This study will use female rats as a model for dry eye and will be implanted with osmotic pumps that will continuously distribute scopolamine or saline systemically over 28 days. Scopolamine will be used to induce the dry eye condition and saline will be used as a negative control. The clinical signs of dry eye will be evaluated by tear volume measurements with sterilized phenol-red thread (FCI …

Assessment Of The Discriminative Stimulus Effects And Time Courses Of Salvinorin A And Two Synthetic Salvinorin B Derivatives, Methoxylmethyl (Mom) And Ethoxymethyl (Eom), Ethers In Rats Trained To Discriminate U69,593, Lisa M. Bell

Masters Theses

Research regarding the psychopharmacology of salvinorin A, the main psychoactive ingredient in the hallucinogenic plant Salvia divinorum, has been motivated largely by a recent increase in its recreational use and widespread media attention focused on this plant and its extracts. In addition, there is considerable evidence that drugs acting on kappa opioid receptors (KOR) may have therapeutic potential in the treatment of some neuropsychiatric conditions, including drug dependence and mood disorders. Although the neuropharmacological actions of salvinorin A are well established, only a few studies have explored the behavioral effects of this substance in comparison to the KOR agonist, …

How Now Shall We Consume: Widening Conception Of Political Consumption And Analysis Of The American Buyer, John Patton Chew

Masters Theses

As consumption of goods has risen, it has increasingly become a space for political activists to brand products and for the everyday consumer to voice their opinion on how businesses should be run. Through the practices of buycotting and boycotting political consumers have increasingly been able to show their support for issues as diverse as gay rights, environmental issues, funding for disease cures, and American based products.

This study attempts to gain an understanding of how prevalent political consumption is and of who are political consumers. The findings show that a large percentage of the population is knowledgeable and active …

The Implementation Of A Versatile Pseudodynamic Hybrid Simulation For Seismic Evaluation Of Structural Systems, Chelsea Griffith

Masters Theses

Pseudodynamic hybrid simulation technique was developed to evaluate structural seismic performance by physically testing the critical portion with the remaining structure simulated using a numerical model in the computer. An incremental approach was adopted in developing the control scheme to suit multiple testing facilities and test specimens. First the small scale, predictable specimen was utilized to investigate techniques of improving stability, slowing down the loading rate and triggering the accurate force measurement in a series of at benchmark scale experiments in the Laboratory of Earthquake and Structural Simulation at Western Michigan University (WMU). A step/hold command scheme was developed and …

The Effects Of Altering Response Effort During Data Collection On Observer Accuracy: Data Collection Procedures On Hand Hygeine Compliance, Krista Hinz

Masters Theses

When dealing with human observers and error, tight control in data collection and methodology is essential for accurate representation of compliance. Although observational studies are popular, little has been done to study the integrity of human observers and the data collection process. Incomplete analysis of data collection integrity threatens functional findings, leading to problematic interpretation and decreased replication. The purpose of the current study was to assess whether manipulating the response effort associated with data collection has an effect on the accuracy of data collection. Participants of the study were undergraduate psychology students at a Midwestern university who were enrolled …

The Rise And Fall Of Kin Structure In The Neotropical, Family-Living Buff-Breasted Wren (Cantorchilus Leucotis) In Gamboa, Panama, Sarah C. Alessi

Masters Theses

Family-living species provide an exciting model to examine how natal dispersal and kin structure influence genetic structuring within local populations. Juvenile buff-breasted wrens (Cantorchilus leucotis) of both sexes delay dispersal and exhibit short-distance natal dispersal, which should lead to kin-structured populations in which relatives of both sexes occupy neighboring territories. Blood samples collected from juvenile and adult wrens in Gamboa, Panama were analyzed using microsatellite markers to determine whether related individuals are spatially clustered on neighboring territories, spatial clusters of relatives change over time, and if kin structure is sex-specific. Global and local spatial autocorrelation analyses detected genetic …

Laboratory Measures Of Aggression In Methadone Patients, Catherine M. Gayman

Masters Theses

Research suggests that current heroin users and individuals with a prior history of heroin dependence tend to be more aggressive than nonusers. No study has yet investigated whether opioid withdrawal affects aggressive responses on a laboratory task. The present study investigates whether mild opioid withdrawal affects aggression in six males and six females (N=12) undergoing methadone maintenance therapy. Aggressive behavior is measured using the Point Subtraction Aggression Paradigm (Cherek, 1981) computer task. Participants press buttons to earn money towards gift certificates. Money subtractions occur periodically and these are attributed to the behavior of a partner who is actually fictitious. Participants …

High Capacity Lithium-Ion Battery Characterization For Vehicular Applications, Sazzad Hossain Ahmed

Masters Theses

A lithium-ion battery is one of the key research topics in energy storage technologies. Major characterization tests such as static capacity, open circuit voltage (OCV), hybrid pulse power characterization (HPPC) have been conducted on two different chemistries, LiMnNi and LiFePO₄, high capacity lithium-ion batteries over a wide range of temperatures from 50ºC to -30ºC. Detail analysis of temperature effects on battery capacity and simple models of direct current resistance (DCR) increment and power decrement over temperatures have been proposed using the test results. Electrochemical impedance spectroscopy (EIS) tests have been performed to find out the dominant internal resistances …

Power Transmission Line Fault Classification Using Support Vector Machines, Zhuokang Jia

Masters Theses

Electrical transmission lines are prone to faults and failures. When a fault occurs, it is impossible most of the times to fix it manually. Many methods have been adopted in the past in order to serve the purpose as fault diagnosing application. In this thesis, I discuss the method of Support Vector Machine (SVM) for fault diagnosis. SVM has the edge of good generalization over other fault diagnosing applications because it is based on pattern recognize algorithms. The aim is to classify the type of fault in the lines. Furthermore, in this work, the current and voltage of each phase …

Early Arrest Mutant Ogre: A Defect In Cytokineis Caused By A Mutation In The Gene Racgap1, April Wicklund

Masters Theses

The early arrest mutant ogre, isolated in the Tübingen screen, has a block in cytokinesis (Kane et al., 1996). Here I use genetic and molecular techniques to demonstrate that the ogre phenotype is caused by a lesion in the gene encoding Racgap1. I performed fine mapping studies using microsatellite markers to a 0.15 cM region containing the ogre locus. DNA sequence data revealed a nonsense mutation in the Racgap1 gene of ogre mutants, and in situ hybridization experiments showed a loss of racgap1 mRNA at later stages of development, likely by nonsense mediated decay. This evidence supports the abolishment …

A Comparison Of Testosterone With Prostate Specific Antigen And Prostatic Acid Phosphatase For The Serodiagnosis Of Prostate Cancer In Adult Males, Annie Chu

Honors Theses

Prostate cancer is the second most common cause of death from cancer in men. The American Cancer Society has estimated that there were 240,890 newly diagnosed cases in 2011 and 33,720 deaths from prostate cancer. Diagnosis of this disease has traditionally been done by measuring prostate specific antigen (PSA) levels through sero-chemical testing. The purpose of this study is to compare serum testosterone levels to PSA levels and Prostatic Acid Phosphatase (PAP) levels in the search for new and more accurate technology. This study shows that testosterone was not efficient in correctly diagnosing those with prostate cancer. It had a …

Professional Learning Communities, Self Efficacy, And Collaborative Learning In The Elementary School, Diana Provancha Sweigart

Dissertations

The United States of America used to have the best high school graduation rate in the world. However, by 2006, the U. S. was ranked 18 out of 26 among industrialized nations (Organization for Economic Co-operation and Development, 2010) with three out of every ten public school students failing to complete high school with a diploma (DuFour and Marzano, 2011). This urgent, pressing issue warrants continuing research to discover what does and does not work in educating our children. Numerous empirical and scientifically-based research studies continue to show the validity of several teaching methods; one such strategy is cooperative learning, …

Investigating The Sensitivity Of Goodness-Of-Fit Indices To Detect Measurement Invariance In The Bifactor Model, Jam Khojasteh

Graduate Theses and Dissertations

A Monte Carlo simulation study was conducted to evaluate the sensitivities of five commonly used goodness-of-fit indices to detect metric invariance properties of the bifactor model. The fit indices that performed the best in terms of power were Gamma and Mc. In addition, Gamma, Mc, CFI, and RMSEA all held Type I error to a minimum. However, only Gamma and CFI are recommended to use in the bifactor model because the other GOF indices have cutoff values that are too large. For Gamma and CFI values of -.026 to -.045 and -.004 to -.009, respectively indicate a lack of metric …

The Academic Effects Of Learning Styles On Esl (English As A Second Language) Students In Intensive English Language Centers, Baderaddin Mahmood Yassin

Graduate Theses and Dissertations

This study investigated the learning styles of ESL students (students who learn English as a second language). The focus in this study was on the ESL Arab Gulf (Saudi Arabia, Oman, Kuwait, and United Arab Emirates) students who study English as a second language in Intensive English Language Centers (IELCs) in the United States. The study explored the ESL Arab Gulf students' learning style preference and how they are affected by different variables such as cultural background, gender, and language level in IELCs. ESL Arab Gulf students were administered the VARK Learning Styles questionnaire. It measures several sensory types of …

Assessing The Impacts Of Surface Water Removal For Use In Natural Gas Extraction On A Watershed Level, Carrie Ann Davis

Graduate Theses and Dissertations

In this study, the Soil and Water Assessment Test (SWAT) was used as a tool to predict whether diffuse water removal from the Cadron Creek watershed for use with natural gas development would have an impact on downstream flow within the watershed. Cadron Creek watershed expands across four counties within Arkansas and is located in the Fayetteville Shale Gas region. This region is experiencing significant growth in natural gas development. Successful development of shale gas depends on the identification of what water supplies are available for production without interfering with community and environmental needs. The SWAT model used to evaluate …

Mapping Xenophobic Violence In South Africa: Modeling Spatial Relationships Between Group Grievances And Opportunities To Measure The Propensity For Xenophobic Violence, Eric Holder

Graduate Theses and Dissertations

Xenophobia can be defined as the hatred or fear of foreigners or strangers or of their politics or culture (Ngwane et al., 2008). This sentiment reached its tipping point in urban areas across the Republic of South Africa in May 2008 when mass, widespread and systematic attacks against African non-nationals took place across the country. Although previous research agrees on who played the various roles during this crisis event (Everatt, 2010), little research has been carried out to create a predictive model to assess where future violence could occur based on a set of conflict indicators. The purpose of this …

Effect Of Body Size And Exercise On Mood State, Alexandra Lachance

Graduate Theses and Dissertations

Exercising in the presence of nature (i.e., "green exercise"), has been shown to heighten the physiological and mental benefits of traditional exercise on non-obese individuals. The effects of green exercise on obese individuals are unknown. It is hypothesized that green exercise is more beneficial for obese (greater positive improvements in mental health scores), compared to non-obese individuals. For example, the benefits of green exercise could help lower feelings of depression, improve mood and self-esteem to increase the propensity of obese individuals to meet exercise recommendations. Accordingly, this study investigated the physiological and psychological effects of green exercise on 12 obese …

Pre- And Post- Wage Differences Of Trade Adjustment Assistance Job Training Participants In Arkansas, Kimberley Hall Gordon

Graduate Theses and Dissertations

A number of costs are associated with the implementation of trade agreements not the least of which is the cost to the American workforce. The information age ushered in an era of globalization unlike anything the world economy had experienced before. As countries raced forward to dominate emerging markets and grow market share, millions of American workers were left in the wake. A remedy to the plight of the dislocated worker was found in trade adjustment assistance, specifically in job training benefits.

This study examined the wage differences experienced by Trade Adjustment Assistance (TAA) job training participants served through the …

An Economic Alternative To The C Chart, Ryan William Black

Graduate Theses and Dissertations

Because the probability of Type I error is not evenly distributed beyond upper and lower three-sigma limits the c chart is theoretically inappropriate for a monitor of Poisson distributed phenomena. Furthermore, the normal approximation to the Poisson is of little use when c is small. These practical and theoretical concerns should motivate the computation of true error rates associated with individuals control assuming the Poisson distribution. An economic alternative to the c chart is described as a statistical model of upward shift from c0 to c1 and the two charts are compared in theory. For a range of c chart …

Study Of Current Optocoupler Techniques And Applications For Isolation Of Sensing And Control Signals In Dc-Dc Converters, Jake Williams

Graduate Theses and Dissertations

There is a need for power switches that can operate at high voltage, high temperature, and high switching frequencies with low losses. Power switches fabricated from wide bandgap materials such as silicon carbide (SiC) or gallium nitride (GaN) can outperform conventional silicon switches due to material property advantages. Another common problem in grid-connected applications is the need for high voltage-isolation of gate drivers and control circuitry while operating efficiently at the high switching frequencies, high power density, and high temperatures made possible by wide bandgap devices. Transformers cannot operate at the temperatures of these wide bandgap devices and a new …