Digital Commons Network^™

Repopulation And Stimulation Of Porcine Cardiac Extracellular Matrix To Create Engineered Heart Patches, Silvia Juliana Moncada Diaz

Theses and Dissertations

Heart failure is the main cause of death for both men and women in the United States. The only proven treatment for patients with heart failure is heart transplantation. The goal of this research is to create patches of tissue that could mimic the function of the native heart to repair the damaged portions of the heart. In this study, whole porcine hearts were decellularized to create a 3D construct that was recellularized with cardiomyocytes (CM) differentiated from human induced pluripotent stem (IPS) cells. At day 4 of differentiation, IPS-derived CMs were implanted onto cardiac extracellular matrix (cECM) and ten …

Characterization Of Pyrolysis Products From Fast Pyrolysis Of Live And Dead Vegetation, Mohammad Saeed Safdari

Theses and Dissertations

Wildland fire, which includes both planned (prescribed fire) and unplanned (wildfire) fires, is an important component of many ecosystems. Prescribed burning (controlled burning) is used as an effective tool in managing a variety of ecosystems in the United States to reduce accumulation of hazardous fuels, manage wildlife habitats, mimic natural fire occurrence, manage traditional native foods, and provide other ecological and societal benefits. During wildland fires, both live and dead (biomass) plants undergo a two-step thermal degradation process (pyrolysis and combustion) when exposed to high temperatures. Pyrolysis is the thermal decomposition of organic material, which does not require the presence …

Relationship Between Compressive Strength Of Different Shape And Thickness Specimens Of Type S Mortar, Theodore James Moffett

Theses and Dissertations

Mortar is the cementitious binding material placed between masonry blocks to create a composite system. The American Society of Testing and Materials (ASTM), along with other organizations, have established the testing of prismatic mortar specimens for evaluating mechanical properties, like compressive strength. Mortar joints, however, possess vastly different characteristics compared to prismatic specimens, especially in terms of geometry and water content. These differences prevent a direct comparison of compressive strength between prismatic specimens and actual mortar joints in the assembly. The objective of this study was to analyze Type S mortar joints, with particular emphasis on specimen shape and water …

Usable Security And Privacy For Secure Messaging Applications, Elham Vaziripour

Theses and Dissertations

The threat of government and corporate surveillance around the world, as well as the publicity surrounding major cybersecurity attacks, have increased interest in secure and private end-to-end communications. In response to this demand, numerous secure messaging applications have been developed in recent years. These applications have been welcomed and publically used not just by political activists and journalists but by everyday users as well. Most of these popular secure messaging applications are usable because they hide many of the details of how encryption is provided. The strength of the security properties of these applications relies on the authentication ceremony, wherein …

The Effects Of Haptics On Rhythm Dance Game Performance And Enjoyment, Bridger Scott Hodges

Theses and Dissertations

Haptics are an exciting, ever-expanding field, particularly in relation to video games. Though haptics found their way rather quickly into conventional games through devices like handheld controllers, music and rhythm titles have hardly seen such attention. Little research has been done to examine the effects of haptics on rhythm dance games from a quantitative and qualitative standpoint for the player. StepMania is an open-source dance game which closely mimics the popular title Dance Dance Revolution. This research investigates the effects of haptics on a sample size of fifty individuals. Each completed three songs in the game with varying conditions: the …

Improving The Quality Of Neural Machine Translation Using Terminology Injection, Duane K. Dougal

Theses and Dissertations

Most organizations use an increasing number of domain- or organization-specific words and phrases. A translation process, whether human or automated, must also be able to accurately and efficiently use these specific multilingual terminology collections. However, comparatively little has been done to explore the use of vetted terminology as an input to machine translation (MT) for improved results. In fact, no single established process currently exists to integrate terminology into MT as a general practice, and especially no established process for neural machine translation (NMT) exists to ensure that the translation of individual terms is consistent with an approved terminology collection. …

Multi-Dimensional Nature Of The Phenomenon Of Fraud In Sales Organizations. Undiscovered Land Of Research Opportunity, Krzysztof Cybulski

Studia i Materiały Wydział Zarządzania Uniwersytet Warszawski

Ethics as well as moral values are a powerful force which can regulate the behavior of salespeople, both inside and outside of an organization. While reasonably specific and easy to understand, ethics do not exhaust the list of determining factors which determine a person’s propensity for fraud. There is a range of fraudulent activities which take place in companies which are not perceived as immoral or at least ethically doubtful. Authors of this text argue that fraud of organizational resources by salespeople is one of the most unrecognized and one of the most devastating phenomena in the modern sales force …

Penetration Depth Variation In Atomic Layer Deposition On Multiwalled Carbon Nanotube Forests, David Alan Kane

Theses and Dissertations

Atomic Layer Deposition (ALD) of Al2O3 on tall multiwalled carbon nanotube forests shows concentration variation with the depth in the form of discrete steps. While ALD is capable of extremely conformal deposition in high aspect ratio structures, decreasing penetration depth has been observed over multiple thermal ALD cycles on 1.3 mm tall multiwalled carbon nanotube forests. SEM imaging with Energy Dispersive X-ray Spectroscopy elemental analysis shows steps of decreasing intensity corresponding to decreasing concentrations of Al2O3. A study of these steps suggests that they are produced by a combination of diffusion limited delivery of precursors with increasing precursor adsorption site …

Examining The Mechanics Responsible For Strain Delocalization In Metallic Glass Matrix Composites, Casey Owen Messick

Theses and Dissertations

Metallic glass matrix composites (MGMCs) have been developed to improve upon the ductility of monolithic metallic glass. These composites utilize a secondary crystalline phase that is grown into an amorphous matrix as isolated dendritic trees. This work seeks to understand the mechanisms underlying strain delocalization in MGMCs in order to better direct efforts for continual progress in this class of material. A mesoscale modelling technique based on shear transformation zone (STZ) dynamics is used to do so. STZ dynamics is a coarse grained technique that can provide insight into the microscopic processes that control macroscopic behavior, but which can be …

The Design, Construction, And Thermal Diffusivity Measurements Of The Fluorescent Scanning Thermal Microscope (Fstm), Samuel Hunter Hayden

Theses and Dissertations

Over the life of nuclear fuel, inhomogeneous structures develop, negatively impacting thermal properties. New fuels are under development, but require more accurate knowledge of how the properties change to model performance and determine safe operational conditions. Measurement systems capable of small–scale, pointwise thermal property measurements and low cost are necessary to measure these properties and integrate into hot cells where electronics are likely to fail during fuel investigation. This project develops a cheaper, smaller, and easily replaceable Fluorescent Scanning Thermal Microscope (FSTM) using the blue laser and focusing circuitry from an Xbox HD-DVD player. The FSTM also incorporates novel fluorescent …

The Antimicrobial Properties Of Honey And Their Effect On Pathogenic Bacteria, Shreena Himanshu Mody

Theses and Dissertations

Honey has been used to heal wounds since ancient times. There are many references in ancient literature that cite honey for its medicinal uses. It is used as an alternative agent to cure infections of wounds, burns, ulcers etc. Researchers have shown some of the antimicrobial properties of honey when used as an ointment. When applied to an affected area, it helps to promote the growth of healthy tissue. One of the factors on which the quality of the honey depends, is its geographical origin. Based on the location, honey types can vary as much as 100-fold from each other …

Flow Adaptive Video Object Segmentation, Fanqing Lin

Theses and Dissertations

We tackle the task of semi-supervised video object segmentation, i.e, pixel-level object classification of the images in video sequences using very limited ground truth training data of its corresponding video. Recently introduced online adaptation of convolutional neural networks for video object segmentation (OnAVOS) has achieved good results by pretraining the network, fine-tuning on the first frame and training the network at test time using its approximate prediction as newly obtained ground truth. We propose Flow Adaptive Video Object Segmentation (FAVOS) that refines the generated adaptive ground truth for online updates and utilizes temporal consistency between video frames with the help …

A Case Study Of A Technical College's Faculty Perceptions Regarding The Value Of Professional Development Activities, Kermelle D. Hensley

Theses and Dissertations

The purpose of this qualitative research study was to investigate technical college faculty members' perceptions of the professional development. Most of the literature was focused on four-year higher educational institutions. For the purposes of this qualitative case study, the researcher addressed the limited amount in the literature about professional development in two-year technical colleges. The researcher investigated faculty perceptions concerning the usefulness of professional development in a two-year higher education institution through survey research design with 8 participants. The main themes were 1) technical college faculty desired professional development; 2) technical college faculty needed for follow up from the professional …

Nkx2-1-As1 Negatively Regulates Cd274/Pd-L1, Cell-Cell Interaction Genes, And Limits Human Lung Carcinoma Cell Migration., Hasmeena Kathuria, Guetchyn Millien, Liam Mcnally, Adam C. Gower, Jean-Bosco Tagne, Yuxia Cao, Maria I. Ramirez

Center for Translational Medicine Faculty Papers

The function of most long noncoding RNAs (lncRNAs) is unknown. However, recent studies reveal important roles of lncRNAs in regulating cancer-related pathways. Human antisense lncRNA-NKX2-1-AS1 partially overlaps the NKX2-1/TTF1 gene within chromosomal region 14q13.3. Amplification of this region and/or differential expression of genes therein are associated with cancer progression. Herein we show higher levels of NKX2-AS1 and NKX2-1 in lung adenocarcinomas relative to non-tumor controls but no correlation between NKX2-1-AS1 and NKX2-1 levels across specimens, or with amplification of the 14q13.3 region, suggesting that NKX2-1-AS1 and NKX2-1 are independently regulated. Loss-and-gain of function experiments showed that NKX2-1-AS1 does not regulate …

Annual Report, Fiscal Year 2017/2018, Tennessee. Department Of Safety & Homeland Security.

Annual Report

No abstract provided.

Students On Truancy, Gabriela Garcia

Capstone Projects and Master's Theses

Truancy is an issue that is affecting the overall success of school districts, and in particular the King City High School District. A study was conducted to provide the school evidence on the leading factor of truancy. A survey was distributed to about thirty students who are currently truant to discover the leading cause of truancy, which was lack of motivation. Additionally, a workshop was developed for truant students who lack motivation. A guest speaker was invited to the school to give a motivational speech to promote future success. Several factors have led students to become truant such as lack …

Resource/Activity Guide For Casa Advocates, Kathreen Lopez

Capstone Projects and Master's Theses

CASA of Monterey County is a public non-profit organization that supports the foster youth population in “pursuing safe, permanent homes” through a volunteer advocacy program. With that being said, Court Appointed Special Advocate (CASA) youth have many needs and challenges. Some advocates feel unsure about how to adequately advocate and connect with their CASA child throughout their advocacy because there was no easy access to resources, activities, and community events information. For this reason, the resource/activity guide website for CASA advocates has been dedicated to providing advocates with a central place to access resources on services for CASA kids in …

Music Rehabilitation Programs In California State Prisons, Sarah Hanson

Capstone Projects and Master's Theses

With 2.3 million people in the United States prison system, reducing recidivism rates in prison is crucial. One of the most prevalent ways California has been able to reduce recidivism and encourage less punitive measure on prisoners is through music rehabilitation programs. This research explores the current prison population, history of music rehabilitation in prisons, positive and negative psychological effects music can have on inmates, an active music rehabilitation program (Dance Kaiso), and how inmates have been utilizing these programs. By exploring the current prison population and how music rehabilitation began in the United States and California, there’s a clearer …

Conozca Sus Derechos Como Rentero, Maria Melgoza-Gaytan

Capstone Projects and Master's Theses

Building Healthy Communities- East Salinas is funded by The California Endowment, which is a statewide nonprofit foundation. The BHC’s main goal is to work alongside residents and community-based organizations to work on community participation and leadership to create a healthier community for the residents of East Salinas. Currently, East Salinas tenants are victims of illegal rental practices. Conozca sus derechos como rentero booklet created, an educational booklet and flyer highlighting tenants’ rights. Factors that contribute to the victimization of the residents include the language barrier, lack of knowledge on laws and their legal status. The goal is to educate tenants …

Buddies Matter: Student Helper Preparedness In A Reading Assistance Program, Rosa Munoz Villegas

Capstone Projects and Master's Theses

Addressing low literacy achievement has raised questions about the quality of student helper preparedness in a reading assistance program. The Reading Buddies Project, a non-profit organization that serves a local elementary school, by providing them with student helpers to teach kids to read, is the focus of this project. Improving the Reading Buddies program will ensure that elementary students struggling to read at grade level are receiving quality tutoring sessions that can positively impact their reading skills and abilities. After interviewing a Fishbay Reads representative, the Reading Buddies Program coordinator, and a reading intervention teacher, three action options emerged as …

Overtone Singing: History, Development, And Influence In Contemporary Music, Jocelyn Black

Capstone Projects and Master's Theses

Overtone singing also known as Throat singing, is an ancient vocal technique where a soloist produces two different tones through the resonance created by the airflow of sound through the lungs, throat, and mouth. Often associated with the Tuva population of Central Asia, this art form is also practiced by the Inuit women of North America, and in South Africa by women of the Xhosa tribe. Overtone singing is an integral part of each cultural tradition and may vary in style and meaning across cultures. Traditional performances of Overtone singing include: celebratory ceremonies, tribal dances, games, and meditation. In the …

Let’S Talk About It: Special Education Communication Barriers With General Education Teachers, Claire Going, Edith Diaz, Clarissa Carrillo

Capstone Projects and Master's Theses

The focus of this Capstone Project is the communication barriers between Special Education and General Education educators. The importance of this issue is the lack of time given in order for all subject departments to have efficient time to collaborate during the school year. The negative effects on teachers are then reflected on students academic achievements. Unfortunately, this has issue has been around for decades yet no effective methods have been put in place. Methods that have been considered are more teacher training, peer-mediated instruction, and time allotment between Special Education and General Education teachers. Data was collected from interviews …

Developing A Python-Based Workflow To Modernize User Interaction With Legacy Programs, Robert H. Hunter

Honors Theses

This thesis explores the process of refactoring legacy scientific software to improve overall usability and the ease with which a researcher can modify the software. The legacy code is Fortran code used to run different mechanical loading scenarios on a user-defined material subroutine. Each material is represented by a Fortran subroutine, and a separate Fortran program was used to call the material. To upgrade this program without sacrificing too much performance and functionality, the material subroutine is compiled into a Python library using f2py, and the driver code is translated into Python. This paper covers this upgrade process, the impact …

Susceptibility And Resilience To Cyber Threat: Findings From A Scenario Decision Program To Measure Secure And Insecure Computing Behavior, Carl F. Weems, Irfan Ahmed, Golden G. Richard, Justin D. Russell, Erin L. Neill

Faculty Publications

Interest in the individual differences underlying end user computer security behavior has led to the development of a multidisciplinary field of research known as behavioral information security. An important gap in knowledge and the motivation for this research is the development of ways to measure secure and insecure cyber behavior for research and eventually practice. Here we report a study designed to develop a technique for assessing secure and insecure cyber behavior for broad research use. The Susceptibility and Resilience to Cyber Threat (SRCT) is an immersive scenario decision program. The SRCT measures susceptibility to cyber threat and malicious behavior …

A Novel Ultrasound Imaging Technique Using Random Signals, Anahita Khalilzadeh

Electrical Engineering Theses and Dissertations

Ultrasound imaging has been used extensively because of its benign nature and relatively low cost implementation. The most common approach for forming an image is Brightness Mode (B-Mode), which uses an array with dynamic focusing. Focus is performed through Phase Shifters that are bulky and complicated components which increases the device cost.

This research describes a new method to form an Ultrasound image, without relying on phase shifting. The proposed method offers a lower cost solution compared to the B-Mode systems and overcomes some of their inherent limitations.

Cooperative Learning In Math Education, Leah Kane

Master's Theses & Capstone Projects

The purpose of this action research project was to determine whether cooperative learning benefits students in the content area of math. Data was collected for this project over a two-week period of time. Qualitative data in the form of observation was taken while students worked in their cooperative learning groups. Quantitative data was incorporated by looking at the progress of students towards their math-learning goal. The math-learning goal being assessed throughout the following research is on subitizing. More specifically, students will be able to subitize the number of dots seen on a ten frame after having looked at the ten …

Sight Words And Phonics: The Connection That Helps Early Elementary Students Read Fluently, Stephanie Mulder

Master's Theses & Capstone Projects

The purpose of this action research project was to determine if combining phonics and memorized vocabulary words into the reading instruction for Tier 2 students would increase fluency speed. For six weeks the researcher introduced Dolch sight words according to grade level to Tier 2 students. This was done in addition to the typical phonics instruction done in the general education classroom and Tier 2 resource room. At the beginning of each week students were given a list of 20 new vocabulary words. Throughout the week, students were asked to use these words in sentences, find them in books, and …

Opportunities To Respond In An Inclusive Early Childhood Classroom, Courtney Schauf

Master's Theses & Capstone Projects

The purpose of this study was to determine if providing students with opportunities to respond resulted in positive student behavior. The researcher conducted the study in an inclusive preschool classroom including students on Individualized Education Plan’s (IEP) and English Language Learners (ELL). The intent of the study was to reduce the amount of negative behaviors in order to provide students with more instructional time and less time addressing unwanted behaviors.

Play In Early Childhood, Keri Griswold

Master's Theses & Capstone Projects

This literature review looks at play in early childhood education and why play is important for early learners. The review looks at the history of play and the benefits that play has on brain development, as well as defining play. Adults play an important role in play, as does the early childhood learning environment. Early learners develop their critical thinking skills and their social and emotional skills through play. The curriculum that is offered to early learners should revolve around play but should ensure that they are being provided the opportunity to learn about the outdoors, math, reading, and all …

Raman Spectroscopy Of Bronze Disease On Wwii Artifacts, Andrea M. Reutzel

Fall 2018 - Chemical Analysis Class Projects

Patina is a film that forms on bronze or similar metals over a long period of time due to an oxidation reaction. If cuprous chloride in copper alloys are present, it reacts with water to create hydrochloric acid. Hydrochloric acid in the presence of metals will cause corrosions of the bronze and over time it will completely eat away at the metal. This reaction, known as Bronze Disease, is different than patina. Patina can act as a coat and preserver for metals. The University of Northern Iowa’s Museum is experiencing Bronze Disease on artifacts in the WWII collection. The Bronze …