Digital Commons Network^™

Adaptable Ring, Bayes Theorem And Dual Gradient Analysis: An Approach To Automatic Shape Detection, Skin Lesion Segmentation And Focus Detection Respectively For Medical Image Analysis, Kanakam T. Maddala

Masters Theses

“Vision-based applications are increasing with the increase in technology and are making a huge impact in this global civilization. A vision-based measurement approach for pill shape detection was developed for medical pill identification, a focus detection method was developed for digital dermoscopy, and a machine learning approach was used for automatic lesion segmentation, which assists in automatic melanoma diagnosis. Rapid and accurate pill identification is needed by medical and law enforcement personnel during emergencies. But, one of the main parameters in pill identification is the shape of the pill. An Adaptable-Ring approach describes a novel technique to accurately detect the …

Palynological Interpretations Of Deep Sea Drilling Projects Cores In The Gulf Of Mexico And Bahamian Platform, Adam Patrick Barron

Masters Theses

"One hundred drill core samples were from Deep Sea Drilling Project (DSDP) Sites 94, 98, and 540 were investigated for their palynological contents (pollen, spores, acritarchs, dinoflagellate cysts, and dispersed organic matter) to infer the paleoenvironmental and paleoceanographic history of the Gulf of Mexico and the Bahamian Platform during the middle Eocene to middle Miocene interval. At Sites 94 and 540, abundant dinoflagellate cysts (chiefly Operculodinium centrocarpum, Lingulodinium machaerophorum, Impagidinium sp., Nematosphaeropsis sp., and Spiniferites spp.) were used as paleoenvironmental indicators. Two alternating palynofacies assemblages were identified from dispersed organic matter analysis: terrestrially influenced assemblage A and marine dominated assemblage …

Pipeline Leak Detection, Marcia Golmohamadi

Masters Theses

"In the present research two techniques are applied for leak detection in pipelines. The first method is a hardware-based technique which uses ultrasonic wave's emission for pipeline inspection. Ultrasonic waves are propagated in the pipe walls and reflected signal from leakage will be used for pipe analysis. Several Pipes with various dimensions and characteristics are modeled by finite element method using ANSYS. Second order longitudinal modes of ultrasonic waves are emitted in their walls. For this purpose, excited frequency is calculated such that it excites the second order longitude mode. In order to investigate the behavior of emitted wave in …

Emission Source Microscopy Applications On Emi Source Localization And Emi Mitigation With Lossy Materials, Xiangyang Jiao

Masters Theses

"In Section 1, the emission source microscopy (ESM) methodology will be introduced and used to identify the sources of radiation on different DUTs. As the new technology generation, the integration density and the operating speed of integrated circuits have been increasing steadily. However, root cause diagnostics to locate the source of EMI radiation is more problematic in the complex system. The ESM technique provides a powerful tool to detect and characterize the active sources of radiation. The amplitude and phase of fields are measured on a plane away from the DUT, and this measurement can get rid of the evanescent …

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 …

A Decision Support Simulation Model For Bed Management In Healthcare, Raja A. Baru

Masters Theses

"In order to provide access to care in a timely manner, it is necessary to effectively manage the allocation of limited resources such as beds. Bed management is key to the effective delivery of high-quality and low-cost healthcare. An efficient utilization of beds requires a detailed understanding of the hospital's operational behavior. It is necessary to understand the behavior of a hospital in order to make necessary adjustments to its resources, and policies, which can improve patient's access to care. The aim of this research was to develop a discrete event simulation to assist in planning and staff scheduling decisions. …

Survey And Data Analysis Of Polymer Flooding Pilot And Field Applications In China, Yandong Zhang

Masters Theses

"Enhanced oil recovery (EOR) processes are regarded as important methods to recovery remaining oil after primary and secondary recovery. It is significant to select the most appropriate EOR process among the possible techniques for a candidate reservoir. EOR screening criteria has been created using available EOR datasets and served as the first step to compare the suitability of each EOR method for a particular reservoir. Most of these datasets are collected from EOR surveys published by Oil & Gas Journal. This study proposes a comprehensive study of a dataset including 55 pilot and field polymer flooding applications in China. Statistical …

Methods For Checking And Enforcing Physical Quality Of Linear Electrical Network Models, Mikhail Zvonkin

Masters Theses

"Most CAD tools allow system-level simulation for signal integrity by computing and connecting models together for the various sub-parts. The success of this model derivation depends on the quality of the network parameters. Different errors may seriously affect the quality of the frequency characterization: frequency-dependent measurement errors, errors due to the numerical simulation and/or discretization, etc. When these errors are large, model assembly and simulation becomes difficult and may even fail. This thesis gives an overview of the most significant properties of physically valid network parameters, describes existing methods for checking and enforcing these properties, and presents several new methodologies …

Researching The Historical Representations Of Ancient Egypt In Trade Books, Lieren Schuette

Masters Theses

State and national education initiatives require that historical information be introduced in the classroom through the utilization of multiple diverse texts. The role of non-fiction in the English/language arts classroom, as well as informational texts in the history/social studies classroom, increased considerably. The use of trade books allows teachers to connect the two curricula, while also meeting the standards. Primary sources can assist in filling the informational gap left by trade books and textbooks, which allow students to gain a more balanced view of historical events. Teachers, however, are not given direction as to which specific curricular materials are most …

Whose Beer Is It, Anyway?: An Examination Of The Constraints Of Organizational Legitimacy With The Craft Beer Industry, Audra E. Clodfelter

Masters Theses

Previous research on organizational legitimacy has determined that legitimacy is necessary for organizational survival, but also places a constraint upon the organization's actions. This project examines the roles of authenticity and social identity as constraints of legitimacy in the craft beer through a case study of four craft breweries that merged with Anheuser-Busch InBev. This study examined the social media communication of four craft breweries prior to their merger announcement as well as the reactions from fans after the announcements were made. Analysis revealed that the breweries used social media to emphasize their authenticity prior to the merger announcement and …

From Trade Deficit In Goods To Trade Surplus In Services: An Eclectic And Extended Gravity Model Approach In Analyzing The Determinants Of Service Trade Of The United States, Tofayel Ahmmad

Masters Theses

This paper employs an eclectic and extended gravity model of trade to assess the most important determinants of real export and import of services of the United States by analyzing US service trade with its 33 partner countries for 15 years. Distance affects US real export of services negatively, but has no influence on US real import of services. A devaluation of the US dollar increases service export of the United States. We find a positive relationship between US goods trade and US service exports. US outward FDI has a positive impact on US real export of services, but has …

Written Discourse Performance After Blast Injury, Brittany M. Loomis

Masters Theses

A blast injury (BI) is caused by a wave from a bomb which damages organs, specifically the brain. Once soldiers/veterans have sustained a BI, they will most likely present with a cognitive-communication deficit resulting from the traumatic brain injury. Language related symptoms are most apparent in written language skills due to the high level of cognitive function required for writing. This study investigated written discourse skills following a BI. Written discourse samples were collected from four participants and four controls. A description of the Butcher Picture from the Aphasia Diagnostic Profile was analyzed for productivity, efficiency, and local and global …

Comparing Persistence Of Upward Transfer And Native Students Pursuing A Bachelor's Degree, Jacob W. Deters

Masters Theses

This study, which was conducted at a rural, Midwestern, four-year, public institution, compared the predicted persistence and factors of persistence of successful upward transfer students, transfer students who started at a community college and then transferred to the four-year institution, and native students, students who start at a four-year institution. To be considered for participation in the study, subjects had to have at least one successful semester at the research site. A quantitative study was designed using Davidson, Beck, and Milligan's (2009) questionnaire which measures predicted persistence as well as ten factors of persistence, such as social integration and academic …

Breaking The Chains Of Trafficking: An Educational Program, Amanda K. Feder

Masters Theses

With popular television shows and films focusing on the issue of sex trafficking, many discursive constructions of the issue allow for a "script" to be followed and replicated in many anti-trafficking discourses. Ultimately, the constructions of the issue become a basis of understanding on sex trafficking, which can consequentially limit the availability and accuracy of anti-trafficking resources. From examining popular discourses and their construction of sex trafficking on a global and U.S. scale, to creating an educational program designed for college-level courses on the realities of trafficking, this project focuses on de-bunking the myths of sex trafficking on a local …

Contextual Conditions Related To The Undergraduate Experience And The Nature Of Alumni Involvement: A Qualitative Study, Kasey G. Evans

Masters Theses

The researcher used qualitative methodology to analyze the perspectives of 5 alumni of a mid-sized Midwestern institution regarding their experiences as an undergraduate at the institution and the context of their current relationship with their alma mater. Overall, participants placed a value on giving back to the organizations and groups that they were most involved with as an undergraduate. The participants do not currently give to the institution financially but would like to in the future. The study suggests that undergraduate context is vital to future involvement with the institution.

Mental Illness In Early American Fiction: Charles Brockden Brown And The Sentimental Novelists, Katie E. Walk

Masters Theses

The late eighteenth and early nineteenth centuries witnessed the development of the United States of America as a new nation. This development brought with it new ideologies and social and political change; included in these changes was the way that sexual conduct outside of marriage was dealt with. Because the emerging legal system became less concerned with matters of morality, some people became frightened that sexual promiscuity would become rampant. The sentimental novel or seduction tale became a means of attempting to control sexual behavior when the law was not able to step in.

The way that madness, a term …

Financial Literacy: Past, Present And Future Impact On College Freshmen, Jennifer Monkman

Masters Theses

This study researched the financial literacy of first-year students relating to their personal finances and financial aid at a rural, Midwestern, four-year public institution. The participants in the study were limited to first-year students with no previous college credit. There were 97 participants in this study, with 84 participant's completing the entire survey. Results of the study indicated that overall students did have financial literacy relating to their financial aid. The results also indicated that students main and original source of financial knowledge came from their parent or guardian. Recommended for Student Affairs Professional is to create more comprehensive orientation …

The Effects Of Cued Speech On Phonemic Awareness Skills, Jessica M. Phillips

Masters Theses

Research suggests phonemic awareness is enhanced through multimodality training. Cued Speech is a multimodality system that combines hand signs with mouth movements to represent phonemes of the spoken language. This system has been utilized successfully in developing phonological awareness with children with hearing loss. However, no research is available on its effectiveness with children who are not deaf or hard-of-hearing. The efficacy of the use of Cued Speech for the enhancement of phonological skills in typically developing 1st grade students was evaluated in this study. Twenty-six 1^st graders identified as low-achieving readers by their classroom teachers were administered the …

Veterans' Perceptions And Use Of Student Support Services At A Midwestern University, Amanda J. Starwalt

Masters Theses

The number of student veterans on college campuses is increasing (NCVAS, 2012). There is a need to support these students, but how? Campuses must take a closer look at the student services they offer to student veterans, and how they are being utilized (McBain, Kim, Cook, & Snead, 2012). In this study, six student veterans were interviewed to better understand what resources and support student veterans utilize on campus. It was found that student veterans are similar to adult learners and bring with them experiences and responsibilities which play an important role in the support and services they utilize. Student …

Online Diagnosis Of Diabetes With Twitter Data, Farheen Ali

Masters Theses

"Innovation in technology enables people to communicate, share information and look for their needs by just sitting in rooms and going through some clicks. While social media has played a very important role in connecting people worldwide, its potential has stretched beyond the innovative idea of connecting people through their social networks. While many thought there was no meeting point for the healthcare sector and social media, it was a surprise when research and innovations have shown that social media could lay a very significant role in the health care sector.

Research has been done in developing models that could …

Argumentation Based Collaborative Software Architecture Design And Intelligent Analysis Of Software Architecture Rationale, Nagaprashanth Chanda

Masters Theses

"A growing model for software architecture defines it as a set of principle design decisions which drive system architects to design the architecture satisfying software requirements and architectural constraints. The design decision making process involves a group of stakeholders exchanging their viewpoints to address various concerns and to reach a consensus collaboratively. These architecture design decisions are usually made based on experiences since there aren't defined methods and models for architecture design. Each design decision yields a set of outcomes which impacts both the system architecture and the final product. As software product systems, tend to be large in size, …

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 …

Initial Fuel Possibilities For The Thorium Molten Salt Reactor, Dustin Gage Green

Masters Theses

"The Generation IV International Forum placed six reactors as priority for research and development to compensate for the world's increasing energy demands. Among the six were Molten Salt Reactors (MSRs). These reactors utilize the Th/²³³U fuel cycle using molten fluoride or chloride salts as coolants. MSRs also have the possibility to use other fissile fuels especially with the first fleet of reactors given the low amount of Uranium-233 available commercially.

With the possibility of diverting from using ²³³U initially, the research presented here will benchmark ²³³U as a main fuel for MSRs using the Thorium Molten …

Characterizing The Influence Of Carbon On The Flowrate And Disinfection Efficacy Of Household Ceramic Water Filters, Jessie Yvonne Hahn

Masters Theses

"Drinking water contamination is a major cause of disease in developing countries. Point of Use (POU) water treatment technologies generally have low initial cost and allow rapid availability of improved water. Ceramic pot filters (CPFs) are a POU water source treatment technology which filter water by gravity through a porous ceramic media. Some filters in use contain carbon remnants left from the fugitive pore former as a dark carbon core. Using disk-shaped experimental ceramic filters produced in the lab to have varying levels of carbon, the percent carbon present was measured and a visual analysis method was developed to determine …

Thermographic Investigation Of Laser Metal Deposition, Sreekar Karnati

Masters Theses

"Laser metal deposition as an additive manufacturing technique has been proven to possess the capability for fabricating complex, intricate geometries and excellent material properties through material deposition. Accurate manufacture of such geometric features would require precise control over the material deposition process. The need of the hour are process monitoring and analyses mechanisms that are crucial in ascertaining the occurrence of the intended actions during deposition while also serving as effective learning tools. The current work involved developing and incorporating an Infra-Red (IR) camera as a process monitoring tool for laser metal deposition. Using the IR camera the thermal dynamics …

Application Of Loglinear Models To Claims Triangle Runoff Data, Netanya Lee Martin

Masters Theses

"In this thesis, we presented in detail different aspects of Verrall's chain ladder method and their advantages and disadvantages. Insurance companies must ensure there are enough reserves to cover future claims. To that end, it is useful to estimate mean expected losses. The chain ladder technique under a general linear model is the most widely used method for such estimation in property and casualty insurance. Verrall's chain ladder technique develops estimators for loss development ratios, mean expected ultimate claims, Bayesian premiums, and Bühlmann credibility premiums. The chain ladder technique can be used to estimate loss development in cases where data …

Laser Surface And Sub-Surface Repair During Metal Additive Manufacturing, Prudvi Teja Ravi

Masters Theses

"This study examines the use of laser surface treatment to repair surface and subsurface defects. Numerical analysis was performed on laser surface melting using Gaussian heat distribution equations to analyze the depth of the melt pool created by the phenomena. Concurrently, a process map was developed with a planned set of experiments by varying the ranges of laser power and travel speed to determine the dimensions of the melt pool across the gamut. The data generated from both the process studies and the numerical analysis was then used to determine the ideal operating ranges of the process parameters to repair …

Energy Disaggregation In Nialm Using Hidden Markov Models, Anusha Sankara

Masters Theses

"This work presents an appliance disaggregation technique to handle the fundamental goal of the Non-Intrusive Appliance Load Monitoring (NIALM) problem i.e., a simple breakdown of an appliance level energy consumption of a house. It also presents the modeling of individual appliances as load models using hidden Markov models and combined appliances as a single load model using factorial hidden Markov models. Granularity of the power readings of the disaggregated appliances matches with that of the readings collected at the service entrance. Accuracy of the proposed algorithm is evaluated using publicly released Tracebase data sets and UK-DALE data sets at various …

Computer Aided Diagnosis Of Oral Cancer: Using Time-Step Ct Images, Jonathan T. Scott

Masters Theses

"In medical imaging it is a very common practice to use a technique known as Time-Step imaging in patients who might develop cancer. Time-Step imaging it a very powerful technique, however it can lead to unmanageable amounts of image data. Previously the only way to search all of this data was to manually look through all of the files. This had to be done by trained professionals who knew what to look for within the images and make a judgment about the patient based on the images. This paper discusses the development of an algorithm to have a computer search …

The Effects Of Physical Flash Hole Deviations On Factory-Grade Rifle Ammunition, Nicolaas Martin Schrier

Masters Theses

"The objective of this research is to determine the effect of dimensional and positional changes of the primer flash hole on the performance of factory-grade rifle ammunition. The studied variables were flash hole diameter, offset from center, and orientation of the offset in the primer pocket. Cartridge performance was quantified by measuring muzzle velocity, chamber pressure, and target grouping size (precision).

Five different flash hole diameters were tested for both the Remington .223 and Winchester .308 calibers: 1.4mm, 2.0mm (the Fiocchi standard), 2.4mm, 2.8mm, and 3.0mm. Each diameter was tested at three offsets: centered (no offset), 0.5mm from center, and …