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Articles 1441 - 1470 of 6739
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Computer Vision For Inventory Management, Christopher Bradley Kalahiki
Computer Vision For Inventory Management, Christopher Bradley Kalahiki
Master's Theses
Deep learning is a subset of machine learning that extracts high-level features from raw data over multiple layers. Deep learning for computer vision has become more popular in the last few years, but the data and resource requirements make it difficult to implement on Internet of Things (IoT) devices. This work aims at providing a series of techniques that can alleviate some of the strain caused by these requirements in order to make a computer vision system for inventory management more feasible. These techniques include data collection, data preprocessing, transfer learning, and a method for intelligently growing a dataset throughout …
A Novel Arc Welding Power Supply With Improved Power Factor Correction, Benjamin H. Tan
A Novel Arc Welding Power Supply With Improved Power Factor Correction, Benjamin H. Tan
Master's Theses
This paper presents the design and development of a novel Arc Welding Power Supply utilizing a modified two-switch forward converter topology. The proposed design improves the power quality by improving power factor to near unity and reducing total harmonic distortion. State space analysis of the proposed circuit showed that the circuit followed a boost-buck input output relationship. Simulation of the circuit was first implemented in LTspice to verify the functionality of the new topology. Hardware implementation of the proposed design was built on a scaled-down prototype for a proof-of-concept of the new topology. The prototype specifications were created for a …
Multiple Input Single Output Converter With Maximum Power Point Tracking For Renewable Energy Applications, Kenneth K. Nguyen, Taufik Taufik
Multiple Input Single Output Converter With Maximum Power Point Tracking For Renewable Energy Applications, Kenneth K. Nguyen, Taufik Taufik
Master's Theses
In this thesis, a maximum power point tracking (MPPT) for multiple input single output (MISO) converter is presented such that power generated from multiple individual energy sources can be combined to deliver the maximum amount of power to a common resistive load. Typically, MISO converters will employ techniques that yield equal current sharing from each energy source. However, this may not be desirable since each source may be rated at different power ratings and/or may experience different operating conditions, preventing the system MISO converter to acquire the most available total power from the sources. Utilizing MPPT control would therefore be …
Camagu: A Multimovement Work Exploring The Isixhosa Culture Of South Africa, Nkululeko Zungu
Camagu: A Multimovement Work Exploring The Isixhosa Culture Of South Africa, Nkululeko Zungu
Master's Theses
The IsiXhosa language of South Africa is a rich historic language that has been preserved aurally through generations. The distinct clicks in this language, made in the mouth, are a characteristic spoken feature. Although IsiXhosa follows the Roman alphabet, individual letters require the pronunciation of different clicks, each having a different sound quality. These particular sounds will change depending on the interaction of the tongue and teeth within the mouth. Alongside this rich historic language is the practice of herbal healing, performed by individuals called Sangomas. A Sangoma’s primary goal is to communicate with the ancestors and to provide spiritual …
Does Population Density Affect The Singing Behavior Of Female Canyon Wrens (Catherpes Mexicanus)?, Lorraine Dargis
Does Population Density Affect The Singing Behavior Of Female Canyon Wrens (Catherpes Mexicanus)?, Lorraine Dargis
Master's Theses
Bird song has historically been considered from the perspective of temperate males despite females in many bird species being prolific singers. In this study, I investigated one species with female song, the canyon wren (Catherpes mexicanus). Canyon wrens do not duet like many other species with female song or other wrens. Instead, males and females sing sex-specific songs. The resource defense function of male canyon wren song is well-described, and males sing often during the breeding season. Females have only been observed to sing sporadically during the breeding season but sing reliably and often when exposed to playback of other …
Nursing Students' Awareness About Effective Teamwork And Related Factors, Vi Thi Thuong Nguyen
Nursing Students' Awareness About Effective Teamwork And Related Factors, Vi Thi Thuong Nguyen
Master's Theses
This study surveyed the awareness level of nursing students about the effectiveness of teamwork and related factors. At Hong Bang International University (HIU), teamwork training for nursing students at HIU has been applied but it has been difficult for all students to achieve high results and confidence in practicing teamwork skills. The effectiveness of self-study and group activities depends on many factors. The effectiveness of teaching approaches has not been measured and has needed to be addressed to result in the best learning experience for students. The results of this study provided recommendations to improve the quality of training as …
Effects Of Exercise On Myogenic Regulatory Factors In Cancer Cachexia-Induced Skeletal Muscle Wasting, Kelsey Daehlin
Effects Of Exercise On Myogenic Regulatory Factors In Cancer Cachexia-Induced Skeletal Muscle Wasting, Kelsey Daehlin
Master's Theses
Cancer cachexia is a complex multiorgan syndrome that affects bodily systems such as liver, brain, fat tissue, and skeletal muscle. It is a major factor that decreases quality of life in cancer patients and is related to about 20% of cancer deaths, however exercise has shown to be effective in helping combat the muscle wasting effects that cancer cachexia has on the body. Cachexia characterized by skeletal muscle wasting which may be caused by downregulation of positive myogenic regulatory factors such as MyoD and myogenin, and upregulation of negative myogenic regulatory factors such as myostatin and MuRF-1. While it is …
Cascaded Linear Regulator With Negative Voltage Tracking Switching Regulator, Ernest Lei
Cascaded Linear Regulator With Negative Voltage Tracking Switching Regulator, Ernest Lei
Master's Theses
DC-DC converters can be separated into two main groups: switching converters and linear regulators. Linear regulators such as Low Dropout Regulators (LDOs) are straightforward to implement and have a very stable output with low voltage ripple. However, the efficiency of an LDO can fluctuate greatly, as the power dissipation is a function of the device’s input and output. On the other hand, a switching regulator uses a switch to regulate energy levels. These types of regulators are more versatile when a larger change of voltage is needed, as efficiency is relatively stable across larger steps of voltages. However, switching regulators …
Quality Of Life Among Colorectal Cancer Patients During Chemotherapy, Chau Minh Than
Quality Of Life Among Colorectal Cancer Patients During Chemotherapy, Chau Minh Than
Master's Theses
This study had the general goal of surveying the quality of life (QoL) and related factors affecting the QoL of colorectal cancer (CRC) patients participating in cancer chemotherapy at University Medical Center (UMC) in Ho Chi Minh City. The study also had the following specific objectives: (a) determining the demographic and clinical characteristics of CRC patients and (b) determining health-related quality of life (HRQoL) and related factors affecting HRQoL of CRC patients receiving cancer chemotherapy. A descriptive cross-sectional design was used. Sixty CRC patients being treated at the UMC participated in this study. The research used the European Organization for …
The Effect Of Music On Anxiety Of The Endoscopic Client In A Private Hospital In Ho Chi Minh City Vietnam, Hanh Thi Hong Nguyen
The Effect Of Music On Anxiety Of The Endoscopic Client In A Private Hospital In Ho Chi Minh City Vietnam, Hanh Thi Hong Nguyen
Master's Theses
Gastrointestinal tract cancer is one of the fifth most common cancers in Vietnam and has a high mortality rate in Vietnamese people based on the Centers for Disease Control and Prevention (2018) global cancer statistics. One-third of adults aged 50 or older, the age group at greatest risk of developing colorectal cancer, have not been screened because endoscopy is considered a stressful procedure. The endoscopic patient sometimes refuses to have the procedure. Therefore, using music to ease the anxiety of endoscopic clients has been examined in various studies but the results have been inconclusive. The aim of this study was …
Evaluation Of Patient Identification Practices By Nurses Working At Saigon Ent Hospital, My Thi Phuong Ngo
Evaluation Of Patient Identification Practices By Nurses Working At Saigon Ent Hospital, My Thi Phuong Ngo
Master's Theses
Recently, patient misidentification has been identified as a common error in healthcare systems. Six patient safety recommendations from the World Health Organization (2007) have resulted in research and improvements to increase patient safety. However, patient misidentifications continue and are a challenge to patient safety. Failure to correctly identify patients continues to result in errors with medications, transfusions, diagnostic testing, and wrong person procedures. In the hospital, patient identification is performed throughout the hospitalization stay: at admission, before a treatment procedure or general nursing care, medication administration, and handover from provider to provider. In some hospital settings, this task is supported …
Significant Objects As Metaphor For Home, Alison Wilcox
Significant Objects As Metaphor For Home, Alison Wilcox
Master's Theses
This qualitative Arts-Based Research investigated how certain objects come to embody a personal definition of home. Objects that are treasured and are associated with home were defined in this research as significant objects. As the researcher, I selected personally significant objects to study. These objects were studied through still life painting and interviews, based on the work of Barbara Fish (2017). Data were then refined into a final reflection painting. This study indicated that significant objects are often denied their intended function, are tied to idealized memories, and help to reconnect the owner to confidence that may have been lost …
Zebrafish Eye Development: Rac And The Creepy Crawlers Of The Eye, Zvi Murry
Zebrafish Eye Development: Rac And The Creepy Crawlers Of The Eye, Zvi Murry
Master's Theses
During vertebrate eye development the optic vesicles protrude from either side of the brain and form the optic cups. As an optic cup starts to surround the lens a groove on the ventral side of the eye forms, known as the choroid fissure (CF). Normally, the CF will close around the optic nerve and hyaloid vasculature. If this process does not occur properly it results in a keyhole opening in the eye known as coloboma. This results in blindness and affects nearly 1 in 4-5,000 births. Zebrafish were utilized as a model for eye development to study CF closure (CFC) …
Type 3 T Helper Cell And Myeloid Derived Suppressor Cell Population Dynamics In A Mammary Carcinoma Model, Viva Rase
Master's Theses
Immunotherapies that augment Type I immunity show robust responses in diffuse blood cancers yet remain relatively ineffective in breast and other solid tumor malignancies. Breast tumor resistance to immunotherapies is associated with polarization towards pro-tumor Type 2 immunity, as well as the expansion of a myeloid derived suppressor cell (MDSC) population that inhibits Type 1 T helper (Th) and CD8+ cytotoxic T cells. Does polarization toward Type 3 immunity play a role in mammary tumor formation? This question had not been investigated prior to these studies despite established relationships between MDSCs and Type 3 Th cells in other inflammatory pathologies. …
Pismo Clams (Tivela Stultorum) In Califorina: Population Status, Habitat Associations, Reproduction, And Growth, Alexandria R. Marquardt
Pismo Clams (Tivela Stultorum) In Califorina: Population Status, Habitat Associations, Reproduction, And Growth, Alexandria R. Marquardt
Master's Theses
Marine shellfish play a vital role in intertidal ecosystems and coastal communities, but many of these fisheries are small-scale and lack the necessary monitoring to ensure long-term sustainability. Effective management often requires information on key demographic parameters, such as population status, reproduction and growth. Pismo clams (Tivela stultorum) are a culturally important and iconic species in California, which supported a thriving commercial and recreational fishery throughout much of the 1900’s. However, Pismo clam populations have declined statewide in recent decades and are attributed to human harvest and predation by California sea otters (Enhydra lutris); However, no …
Development Of An Attenuated Zika Virus By Editing The 5’ Untranslated Region, E. Ashley Thompson
Development Of An Attenuated Zika Virus By Editing The 5’ Untranslated Region, E. Ashley Thompson
Master's Theses
Zika Virus (ZIKV) is a mosquito-transmitted flavivirus that usually causes no symptoms to mild febrile in humans, and it has been regarded as an insignificant pathogen to public health. However, recent outbreaks of ZIKV infection have revealed that ZIKV can cause severe neurological effects in adults, such as Guillain-Barre Syndrome (GBS), and in infants whose mothers acquired the virus during pregnancy, causing Congenital Zika Syndrome (CZS). Currently, no approved vaccine is available and there is a critical need to develop an effective and safe vaccine. While most vaccine developmental strategies target the viral prM-E protein of ZIKV, we aimed to …
Homotopy Analysis Method For Nonlinear Ordinary Eigenvalue Problems, Subagya Perera
Homotopy Analysis Method For Nonlinear Ordinary Eigenvalue Problems, Subagya Perera
Master's Theses
In this thesis, we solve nonlinear differential equations by the homotopy analysis method (HAM), which is a semi-analytic method first introduced by Shijun Liao in 1992. The modified HAM can be viewed as a more generalized method that encloses many perturbation and non-perturbation methods. It is different from perturbation or other analytical methods in that it allows considerable freedomformanyvariables. Using the modified HAM, especially zero-order and higher-order deformation equations, we solve a nonlinear initial value problem and a nonlinear eigenvalue problem. We adjust the convergence region of a solution by modifying auxiliary parameter values. The results converge in very few …
Vegetative Community And Health Assessment Of A Constructed Juncus-Dominated Salt Marsh In The Northern Gulf Of Mexico, Nickolas R. Murphy
Vegetative Community And Health Assessment Of A Constructed Juncus-Dominated Salt Marsh In The Northern Gulf Of Mexico, Nickolas R. Murphy
Master's Theses
Deer Island is a coastal habitat which provides a buffer from storm and flood damage as well as shore-line stabilization to the mainland of Biloxi, Mississippi. A third of the land has been lost since 1850, largely driven by tropical storm and hurricane impacts as well as sea level rise. The United States Army Corps of Engineers and Mississippi Department of Marine Resources have targeted the shores of the island as sites for restoration using beneficial use dredged material, and two sites of differing age have since been planted with Spartina alterniflora, Juncus roemerianus, Uniola paniculata, S. patens, and Panicum …
Historical And Contemporary Variables Affecting The Range And Distribution Of Aedes Aegypti, The Yellow Fever Mosquito, In The United States, Nicole Mackey
Master's Theses
Aedes aegypti, the primary mosquito vector of the yellow fever virus, threatens global health by passing on this virus, as well as chikungunya, dengue, and Zika viruses. Through its natural tendency to live in highly urban areas and bite human hosts; understanding the factors that affect the historical and current range of the pest is invaluable (Gubler, 1998). Although these viruses are not normally found in the United States, lack of vaccinations and wide-spread presence of the mosquito could lead to these diseases being reintroduced with potentially devastating effects (Monath, 2001). To determine a partial historical range of A. aegypti …
Oh, My Stars: A New Map Of The Universe In Paradise Lost, Michael R. Coats
Oh, My Stars: A New Map Of The Universe In Paradise Lost, Michael R. Coats
Master's Theses
Milton’s geographical descriptions in Paradise Lost are heavily influenced by his fascination with maps. Furthermore, his design of the universe in Paradise Lost follows a cartographic style that has led to several attempts at mapping it. These attempts, however, have followed the erroneous assumption that Earth centers the universe. As a result, cosmographical maps of Paradise Lost are inaccurate. I argue that Milton’s universe is Deocentric and provide a new map with a pyramid design that places God at the center of Milton’s universe.
Barriers To Health: Understanding The Barriers Faced By Community Intervention Projects, Vera Landrum
Barriers To Health: Understanding The Barriers Faced By Community Intervention Projects, Vera Landrum
Master's Theses
Health disparities affect significant portions of the population and are most often experienced by marginalized communities (Wilkin, 2013). Health disparities are also impacted by geographical location, and hunger often affects rural areas (Dutta, Anaele, & Jones, 2013; Rural Health Information Hub, 2017). This study aims to understand how nonprofit organizations focused on addressing food insecurity disseminate information to members of the local community and how the input of community members impacted the overall food insecurity campaign. This study was conducted by interviewing five nonprofit directors and conducting three focus groups with clients of the. aforementioned organizations. The author found that …
The Unknown War: Army Of The Republic Of Vietnam Combat Operations 1962-1963, Justin Major
The Unknown War: Army Of The Republic Of Vietnam Combat Operations 1962-1963, Justin Major
Master's Theses
The American historiography of the Vietnam War has tended to focus on the actions of the United States Armed Forces, the People’s Army of Vietnam, and the Viet Cong, while the history of the Army of the Republic of Vietnam (ARVN) has remained largely untold. ARVN, when mentioned, is usually portrayed as incompetent, ineffective, and even cowardly. Recently, historians like Andrew Wiest and Mark Moyar have challenged this view of ARVN that was originally advanced by journalists Neil Sheehan and David Halberstam. Moyar even suggested that ARVN was winning the war until the assassination of South Vietnamese President Ngo Dinh …
The Development And Exploration Of A Twelve-Factor Model Of Motivations For Using Substances, Taylor Altenberger
The Development And Exploration Of A Twelve-Factor Model Of Motivations For Using Substances, Taylor Altenberger
Master's Theses
The existing literature suggests inconsistent and limited application of various salient motives to use substances across substance classes and has been further limited by only measuring substance use motives by the frequency at which one uses for a given reason. The purpose of this study was the development and initial validation of the Motivations for Substance Use Questionnaire (MUSQ). The MUSQ was intended to be a more comprehensive measure identifying motives to use that have been selectively included in some measures and expanding the breadth of substances addressed. We also aimed to index and test cognitive aspects of the motives …
An Analysis Of Dredge Efficiency For Surfclam And Ocean Quahog Commercial Dredges, Leanne Poussard
An Analysis Of Dredge Efficiency For Surfclam And Ocean Quahog Commercial Dredges, Leanne Poussard
Master's Theses
Between 1997 and 2011, The National Marine Fisheries Service conducted 50 depletion experiments to estimate survey gear efficiency and stock density for Atlantic surfclam (Spisula solidissima) and ocean quahog (Arctica islandica) populations using commercial hydraulic dredges. The Patch Model was formulated to estimate gear efficiency and organism density from the data. The range of efficiencies estimated is substantial, leading to uncertainty in the application of these estimates in stock assessment. Analysis of depletion experiment simulations showed that uncertainty in the estimates of gear efficiency from depletion experiments was reduced by higher numbers of dredge tows per experiment, more tow overlap …
Nearshore Sedimentology Of Eroding Microtidal Estuaries: Bon Secour Bay, Alabama And Perdido Bay, Florida, Jennifer Simpson
Nearshore Sedimentology Of Eroding Microtidal Estuaries: Bon Secour Bay, Alabama And Perdido Bay, Florida, Jennifer Simpson
Master's Theses
Estuarine shorelines along the northern Gulf of Mexico are dynamic geologic settings that provide numerous ecological and economic benefits. By definition, estuaries are semi-enclosed bodies of water that receive sediment from two sources: (1) fluvial systems feeding into the estuary and (2) sediment transported by wave action and tidal currents from adjacent marine sources. Erosion of estuarine shorelines resulting from rising sea level, storm impact, and anthropogenic influence has been increasingly evident in the microtidal Gulf Coast over recent decades. This study collects quantitative and qualitative data to better understand sedimentary dynamics associated with contemporary estuarine shoreline erosion in Bon …
Mosquito Communities And Insect-Specific Viruses In A Heterogenous, Urban Landscape In Puerto Rico, Nicole Scavo
Mosquito Communities And Insect-Specific Viruses In A Heterogenous, Urban Landscape In Puerto Rico, Nicole Scavo
Master's Theses
The goal of my thesis was to investigate the relationships between mosquito diversity, Aedes aegptyi populations, and socioeconomic factors (SEF) in an urban setting and to characterize the virome of Ae. aegypti in San Juan, Puerto Rico. Mosquitoes were collected in three periods during late 2018 and early 2019 and were identified to the species level. Socioeconomic factors were measured using foot surveys and U.S. Census data. Some Ae. aegypti females were processed for sequencing and sent to Quick Biology for RNA sequencing to identify viruses. Results showed a link between SEF and Ae. aegypti abundance as well as between …
Characterizing Erad And Antioxidant Response In Ixodes Scapularis Ise6 Cells During Borrelia Infection, Latoyia Downs
Characterizing Erad And Antioxidant Response In Ixodes Scapularis Ise6 Cells During Borrelia Infection, Latoyia Downs
Master's Theses
Ticks are hematophagous ectoparasites that transmit a multitude of diseases to humans. Borrelia burgdorferi (BB) and Borrelia miyamotoi (BM) are both tick-borne pathogens that cause disease in humans and are transmitted by the black-legged tick (Ixodes scapularis). A byproduct of blood digestion generates reactive oxygen species that are toxic and cause oxidative stress which promotes cellular damage and dysfunction. The endoplasmic reticulum (ER) is especially affected by oxidative stress, resulting in a buildup of improperly folded proteins in the ER lumen called ER stress. To prevent cellular damage, the tick utilizes an antioxidant system to neutralize ROS and mechanisms …
Using Modern Portfolio Theory To Analyze Virgil's Aeneid (Or Any Other Poem), David Patterson
Using Modern Portfolio Theory To Analyze Virgil's Aeneid (Or Any Other Poem), David Patterson
Master's Theses
This paper demonstrates that it is possible to use mathematics to study literature as it has been used to study the social sciences. By focusing on mathematically defining economic and literary terms, it can be shown that the underlying mathematical structure behind key concepts in economics and literature are analogous. This opens the possibility of applying economic models in literature. Specifically, it is demonstrated that the economic mathematical model of modern portfolio theory can answer long standing questions around the Roman epic Aeneid by Virgil. The poet died before completing his poem. The relative completeness of the books of the …
Willingness To Seek Professional Help For Suicidal Thoughts: The Role Of Masculine Norms And Self-Stigma In Service Members, Samantha E. Daruwala
Willingness To Seek Professional Help For Suicidal Thoughts: The Role Of Masculine Norms And Self-Stigma In Service Members, Samantha E. Daruwala
Master's Theses
Given the high rate of suicide, it is important to understand what barriers are preventing service members from seeking professional help for suicidal thoughts. Self-stigma and conformity to masculine norms, which are evident in the military culture, have been demonstrated as barriers to care in civilians. This study sought to better understand how these two factors are related to willingness to seek professional help for suicidal thoughts and a personal-emotional problem among service members. Specifically, we (1) identified service members’ willingness to seek help from a variety of sources for suicidal thoughts and a personal-emotional problem, (2) examined how conformity …
“You Must Live, And Show To The World What They Have Been Doing Here”: The Survival Of The “Rabbits” Of Ravensbrück, Regina Coffey
“You Must Live, And Show To The World What They Have Been Doing Here”: The Survival Of The “Rabbits” Of Ravensbrück, Regina Coffey
Master's Theses
The Polish women who would later come to be known as the kroliki or “rabbits” arrived at Ravensbrück with a death sentence. As a result of their work for underground organizations back in Poland, the camp administration planned to execute them within a few years. Because the women were already intended to die, they were chosen as the subjects of experimental operations in which muscles and bones in their legs were mutilated and many of them were injected with various diseases and bacteria. Most of the rabbits survived the experiments, though many were permanently crippled, and several suffered from additional …