Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

PDF

Theses/Dissertations

Master's Theses

Discipline
Institution
Keyword
Publication Year

Articles 1 - 30 of 16950

Full-Text Articles in Entire DC Network

Effects On Strength And Corrosive Characteristics Of Hardened Cement Paste Using Rice Husk And Sugarcane Bagasse, Travis D. Garrett May 2020

Effects On Strength And Corrosive Characteristics Of Hardened Cement Paste Using Rice Husk And Sugarcane Bagasse, Travis D. Garrett

Master's Theses

Cement is one of the most used building materials in the world. The production of ordinary Portland cement contributes to the release of harmful greenhouse gasses. In an effort to reduce these emissions, different materials are being evaluated for their use as partial replacements for ordinary Portland cement. Rice husk and sugarcane bagasse are agricultural waste products and large amounts of these are currently landfilled, making them inexpensive and available. When combusted at high temperatures they form rice husk ash and sugarcane bagasse ash that have pozzolanic characteristics. The high silicon dioxide in these products makes them good options to ...


Embodying Empathy: Engaging High School Students In Social Awareness Through The Choreographic Process, Rachel Wade Dec 2019

Embodying Empathy: Engaging High School Students In Social Awareness Through The Choreographic Process, Rachel Wade

Master's Theses

The goal of this study was to gauge growth of student empathy and social awareness as they collaborated through the choreographic process. There were eighteen participants in this study. Through learning about one individual’s experience growing up during the Civil Rights Movement, students used movement and the creative process to unpack ideas and concepts they learned. Through this study, participants used collaboration, communication, problem-solving, and the choreographic process to create a full-length performance. Participants gained a greater understanding and sense of empathy for the experience of the subject and others during this experience. Limitations of this study included potential ...


The Missing Art: Dance Advocacy And Inter-Arts Collaboration In New Jersey Public High Schools, Vicki Jenkins Dec 2019

The Missing Art: Dance Advocacy And Inter-Arts Collaboration In New Jersey Public High Schools, Vicki Jenkins

Master's Theses

Jenkins, Vicki. The Missing Art: Dance Advocacy and Inter-Arts Collaboration in New Jersey Public High Schools. Unpublished Master of Arts thesis, University of Northern Colorado, 2019. The purpose of this research was to explore the effects dance has on New Jersey public high schools’ performing arts curriculum and its students. It also explored how dance was being utilized in schools and the ways in which art teachers worked together in their programs. The research instrument used in this study was an electronic survey that included quantitative and qualitative questions for data gathering. Participants in this study were from eleven New ...


Nurses' Level Of Comfort, Familiarity, And Knowledge About Diabetes Management In Vinmec Central Park International Hospital, Nguyen Thi Xuan Mai Dec 2019

Nurses' Level Of Comfort, Familiarity, And Knowledge About Diabetes Management In Vinmec Central Park International Hospital, Nguyen Thi Xuan Mai

Master's Theses

Clinical nurses have a key role in supporting and management of diabetes patients during hospitalization. The purpose of this study was to evaluate nurses’ level of comfort, familiarity, and knowledge in diabetes management. In this study, 30 full-time nurses working in Vinmec Central Park International Hospital completed a 34-question assessment that included eight questions on comfort, six questions on familiarity, and 20 questions on nursing knowledge. The findings indicated the level of nursing knowledge regarding diabetes management in the hospital was low. The comfort, familiarity, and knowledge scores were not directly proportional to the age, education, and years of clinical ...


Associations Between Waiting Time And Patient Satisfaction Level At Tan Phu District Hospital In Ho Chi Mihn City, Vietham, Luu Tien Dat Dec 2019

Associations Between Waiting Time And Patient Satisfaction Level At Tan Phu District Hospital In Ho Chi Mihn City, Vietham, Luu Tien Dat

Master's Theses

Waiting time for a patient at an outpatient department to see a doctor and completing the examination after registration was one problem in most countries and causes patient dissatisfaction. Long times for waiting leads to a reduction in timely treatment, overcrowding in the waiting area in the hospital, and is majorly unpleasant for any patient. Other factors that can contribute to waiting times are the layout of the medical facilities, the quantity and availability of medical equipment, and patient flow. In Vietnam, a developing country in Southeast Asia, patients are facing an issue of patient overload in public hospitals, especially ...


Tectonic Setting And Timing Of Deformation In The Big Thompson Canyon, Northern Colorado Front Range, Simone Muller Nov 2019

Tectonic Setting And Timing Of Deformation In The Big Thompson Canyon, Northern Colorado Front Range, Simone Muller

Master's Theses

The 1.8-1.6 Ga rocks of the western United States were formed through accretionary tectonics either by collision of juvenile island-arcs or by cycles of extension-accretion. For the juvenile island-arc model, basins between the arcs are expected to be older than the arcs and long periods of time (>10-20 Myr) may exist between basin formation, arc formation, and the deformation caused by their accretion. In contrast, the extension-accretion model predicts sedimentation within extensional basins must be younger than the earliest arcs and may be deformed by accretion shortly (~10-20 Myr) after formation. The Big Thompson Canyon area, between Loveland ...


Evaluation Of Drought-Resistant Plants For Beneficial Insect Attraction, Benjamin Gluck Nov 2019

Evaluation Of Drought-Resistant Plants For Beneficial Insect Attraction, Benjamin Gluck

Master's Theses

Beneficial insects, such as natural enemies and pollinators, provide billions of dollars of ecological services to agricultural operations. However, as the climate changes, Connecticut is projected to have longer periods of drought. This could negatively impact the availability of flowering plants, and the beneficial insects who rely on their floral resources.


This research focuses on the diversity of insect visitors to five species of drought-resistant plants at the Plant Science Research and Educational facility. Over the two-year study the visitation frequency of pollinators and beneficial insects on the plants was observed, insect samples were collected for further identification. Agastache foeniculum ...


Changes In The Cognitive Dynamics Of Problem-Solving, Shireena Mcgee Nov 2019

Changes In The Cognitive Dynamics Of Problem-Solving, Shireena Mcgee

Master's Theses

How do humans develop the ability to approach and solve diverse, attentionally-demanding problems? Current work on problem-solving focuses on well-defined problems in which explicit task constraints directly inform the planning and execution of behaviors. However, in situations that might be more informative for naturalistic learning and problem-solving, what is necessary to solve problems when task constraints, and thus planning abilities, are not as easily accessible? Executive functions such as selective attention and working memory seem fundamental to these types of activities, yet there is not a clear account of how exactly the coordination of these cognitive processes contribute dynamically to ...


Advancements In Novel Material Rfid-Based Crack Sensing And Bridge Weigh In Motion, Benjamin Bruciati Oct 2019

Advancements In Novel Material Rfid-Based Crack Sensing And Bridge Weigh In Motion, Benjamin Bruciati

Master's Theses

The current infrastructure in the United States is continually deteriorating. Smart structures in civil engineering are becoming increasingly popular due to the performance enhancing systems they contain. Many of these systems are related to sensing and monitoring the structure. Structural health monitoring (SHM) has state of the art technological advances in both these fields. This thesis contributes to the advancements in the SHM field, particularly crack detection and Bridge Weigh-In-Motion (BWIM). The crack detection research uses existing radio frequency identification (RFID) crack detection technology and applies it to a novel material, Ultra High-Performance Concrete (UHPC). This system uses backscatter power ...


Dance Competitions: The Culture, The Training, And The Effects On Young Dancers, Teresa Schmitt Oct 2019

Dance Competitions: The Culture, The Training, And The Effects On Young Dancers, Teresa Schmitt

Master's Theses

The purpose of this study was to assist educators, students, and families, in understanding the advantages and disadvantages of participating in competition dance training as it exists in private studios. The researcher evaluated perceptions of competitive dance training through the lens of nine high school aged dancers who participate or did participate in such activities, with a goal of uncovering how this training experience affected them and what they thought about it. The research instrument used in this study was an electronic survey that included questions that produced responses that were analyzed either quantitively or qualitatively, depending on the nature ...


Comparisons Of Upper Tropospheric Ozone At A Coastal And Urban Site And The Impact Of Local Surface Emissions, Chloe Anne Gore Oct 2019

Comparisons Of Upper Tropospheric Ozone At A Coastal And Urban Site And The Impact Of Local Surface Emissions, Chloe Anne Gore

Master's Theses

This study quantified the impact of urban emission sources on the enhancement of ozone (O3) in the troposphere using data from simultaneous ozonesonde launches at Half Moon Bay (HMB), CA and San Jose (SJ), CA on eleven dates in July and August 2018. The urban O3 enhancement in the SJ vertical profile was derived by subtracting out HMB, which represents baseline O3, from the SJ profile. This enhancement was averaged into 1 km layers and statistically analyzed with surface emission concentration data from three locations in SJ, however this did not reveal any discernable trends between the surface and O3 ...


Development Of A Computational Elbow Joint Model To Analyze The Effects Of Synovial Fluid On Articular Cartilage During Joint Motion, Abhishek Yellapragada Oct 2019

Development Of A Computational Elbow Joint Model To Analyze The Effects Of Synovial Fluid On Articular Cartilage During Joint Motion, Abhishek Yellapragada

Master's Theses

While significant advances have been made in the development of computational elbow joint models, fluid-structure interaction (FSI) in the elbow joint has not yet been explored. The objective of this study is to develop a computational elbow joint model to simulate the effects of synovial fluid on articular cartilage during flexion, extension, pronation, and supination. The model was developed with anatomically accurate 3D bone geometries; articular cartilage geometries that were derived from the 3D bone geometries; ligaments defined as linear springs; muscles embedded as joint non-linear stiffness; and a fluid domain that encompassed the joint articulations with a homogenous, incompressible ...


A Comparison Of The Relationship Between Gender Adherence, Sex, And Attitudes Toward Individuals With A Mental Illness, Brooke Reimer Oct 2019

A Comparison Of The Relationship Between Gender Adherence, Sex, And Attitudes Toward Individuals With A Mental Illness, Brooke Reimer

Master's Theses

Attitudes toward persons with a mental illness consist of four main dimensions: Authoritarianism, benevolence, social restrictiveness, and community mental health ideology. Attitude differences on these dimensions have been found among many types of groups, including age, race, and educational attainment. Sex and gender adherence have been cited as other such factors, but two major issues are present: past researchers have reported inconsistent findings regarding attitude differences and the terms are used interchangeably in research literature despite conceptual differences. Using data from 187 individuals from a survey, the current study tested sex differences and gender adherence differences in attitude toward mental ...


Signal Integrity Optimization Of Rf/Microwave Transmission Lines In Multilayer Pcbs, Justin Thien Le Oct 2019

Signal Integrity Optimization Of Rf/Microwave Transmission Lines In Multilayer Pcbs, Justin Thien Le

Master's Theses

While allowing for flexible trace routing and device miniaturization, multilayer printed circuit boards (PCB) suffer from performance issues at high frequency due to the impedance mismatch caused by vertical transitions. In this paper, a process for optimizing the high-speed performance of microstrip to stripline transitions in multilayer PCBs is demonstrated. This includes strategic tuning of via dimensions using time-domain reflectometry and an analysis of the use of shielding vias to prevent parasitic cavity resonance. Simulations of optimized 2-layer, 4-layer, and 6-layer microstrip to stripline transitions show a return loss of 20 dB up to 7 GHz. To demonstrate a useful ...


Bilingual Development: Language Input At Home In Sequential Spanish-English Children, Vanessa Noemy Bermudez Oct 2019

Bilingual Development: Language Input At Home In Sequential Spanish-English Children, Vanessa Noemy Bermudez

Master's Theses

The literature on language input provided to sequential Spanish-English bilingual children has largely been focused on children attending Head Start. The role of siblings in children’s language outcomes has only been investigated in simultaneous bilinguals. The current longitudinal study extended research on language input by investigating early developmental changes in language input and the role of siblings in the language outcomes of 112 sequential Spanish-English bilingual children. Relative exposure was assessed via a parent interview when children were 18 and 56 months of age. Standardized measures of receptive vocabulary and expressive language in Spanish and English were administered at ...


Numerical Simulations Of Atmospheric Rivers And The Rain Shadow Over The Santa Clara Valley, Jesse Dalton Behringer Oct 2019

Numerical Simulations Of Atmospheric Rivers And The Rain Shadow Over The Santa Clara Valley, Jesse Dalton Behringer

Master's Theses

This study investigated precipitation distribution patterns in association with atmospheric rivers (ARs). The Weather Research and Forecasting (WRF) model was employed to simulate two strong atmospheric river events. The precipitation forecasts were highly sensitive to cloud microphysics parameterization schemes. Thus, radar observed and simulated Z_H and Z_DR were evaluated to provide information about the drop-size distribution (DSD). Four microphysics schemes (WSM-5, WSM-6, Thompson, and WDM-6) with nested simulations (3 km, 1 km, and 1/3 km) were conducted. One of the events mostly contained bright-band (BB) rainfall and lasted less than 24 h, while the other contained both BB and ...


A Comparative Study Of The Influence Of Level Of Automation And Reliability Of Ids Systems On Cyber Situation Awareness, Ian Anderson Cooke Oct 2019

A Comparative Study Of The Influence Of Level Of Automation And Reliability Of Ids Systems On Cyber Situation Awareness, Ian Anderson Cooke

Master's Theses

Computer network defense (CND) protects organizations and individuals against cyber threats by monitoring, identifying, analyzing, and defending network infrastructure from infiltration. Network defenders must maintain high levels of cyber situation awareness (CSA) in order to correctly identify and act on threats to the network. Intrusion detection systems (IDSs) are automated systems designed to assist network defenders in building CSA by sifting through network traffic and flagging potential threats. These systems are plagued by high false alarm rates that inhibit the ability of network defenders to build CSA. More capable IDSs have been developed that are capable of increasing the hit ...


The Impact Of The Quality Of A Relationship With Supervisors On Employee Work Attitude And Behaviors, Dylan Scott Gilstein Oct 2019

The Impact Of The Quality Of A Relationship With Supervisors On Employee Work Attitude And Behaviors, Dylan Scott Gilstein

Master's Theses

It has been shown that leader member exchange (LMX) relationships are related positively to subjective career success and negatively to counterproductive work behaviors (CWBs). However, few studies have examined the possible mediators of these relationships. The present study proposed that need satisfaction and intrinsic motivation would mediate the relationship between LMX and both outcomes. It was hypothesized that high-quality leadership relationships would satisfy employees’ psychological needs and intrinsically motivate them which, in turn, would lead them to perceive themselves as more successful in their careers and to engage in fewer CWBs. Using data from 160 participants from an online survey ...


Children's Books As Cultural Products: A Qualitative Study Of Cultural Representation In Hmong And Non-Hmong American Books, Malina Her Oct 2019

Children's Books As Cultural Products: A Qualitative Study Of Cultural Representation In Hmong And Non-Hmong American Books, Malina Her

Master's Theses

This study examined the type of cultural practices and values depicted within Hmong American children’s books in comparison to non-Hmong American children’s books from the United States. The purpose was to explore if prior Hmong traditional practices and values reflective of American individualism would extend to Hmong children’s books. Thirty best-seller children’s books were coded using two checklists, one focused on Hmong traditional practices and the other on American values. Results showed that Hmong traditional practices underscored by Hmong adolescents in prior research somewhat extended to Hmong children’s books. Moreover, in some respects Hmong children ...


Monotonic Testing Of Steel Anchor Straps For Alternative Installation Methods In Wood Frame Shear Walls, Randall Block Oct 2019

Monotonic Testing Of Steel Anchor Straps For Alternative Installation Methods In Wood Frame Shear Walls, Randall Block

Master's Theses

Metal wood-connection hardware straps are sometimes installed in ways not intended

by the manufacturers; in particular, a shear-wall anchor strap which was manufactured to

be used in straight alignment to connect a post above a particular floor of a building to a

post below that floor may instead be bent and wrapped around a floor beam. Four

specimens using steel straps were constructed and tested in order to simulate building

situations. The experimental specimens had wooden posts and engineered-wood floor

beams, connected by straps, arranged so that the load paths passed through the straps

being tested; the control specimens had ...


The Role Of Metacognition In Visual Art Education, Renae P. Mccollum Oct 2019

The Role Of Metacognition In Visual Art Education, Renae P. Mccollum

Master's Theses

Metacognition is a conscious activity that occurs in the brain when an

individual monitors or controls his or her thinking. Research in multiple fields has

found that metacognition plays a significant role in a person’s learning. It is

currently a popular trend in general education to teach students metacognitive

strategies, and research has shown that it is a practical tool to boost student

success. Moreover, metacognition is most effective when it is taught explicitly

and regularly practiced by the students. There is a need for more research into

the effectiveness of explicitly teaching metacognition in middle and high school ...


Asian Long-Range Transport In Relation To Atmospheric Rivers In Northern California, Catherine Liu Oct 2019

Asian Long-Range Transport In Relation To Atmospheric Rivers In Northern California, Catherine Liu

Master's Theses

The study investigated the effect of aerosol long-range transport on precipitation over northern California during atmospheric river (AR) events in the 2017 cold season (January-April). ARs in 2017 were among the strongest to date and the intense precipitation associated with the ARs resulted in flooding, destruction of property, and contamination of water supplies. The aerosol optical depth (AOD) from Moderate Resolution Imaging Spectroradiometer (MODIS) data showed Asian dust traveling across the northern Pacific Ocean along with AR events. Aerosol measurements in California, provided by the Interagency Monitoring of Protected Visual Environments (IMPROVE), showed that more Asian dust tends to be ...


An Investigation Of The Effects Of Individual Differences On Technology Acceptance In The Workplace, Robert Neil Payne Oct 2019

An Investigation Of The Effects Of Individual Differences On Technology Acceptance In The Workplace, Robert Neil Payne

Master's Theses

The purpose of the current study was to test for moderating effects that conscientiousness, agreeableness, and openness to experience have on relationships in the technology acceptance model. More specifically, the current study tested for previously overlooked moderation effects that these personality traits have on the relationships between behavioral intention and its predictors (i.e. perceived ease of use, perceived usefulness, and subjective norms). A sample of 96 employees from more than 16 industries participated in the study by completing an online survey. Results of the current study displayed a significant moderation effect by agreeableness on the relationship between perceived ease ...


Preserving Ideals Of Chemical Reaction Networks, Mark Curiel Oct 2019

Preserving Ideals Of Chemical Reaction Networks, Mark Curiel

Master's Theses

Under the assumption of mass-action kinetics, every chemical reaction network has an associated polynomial dynamical system. Rather than study the dynamics of this system, we shall study the ideal generated by the polynomials in the system called the steady state ideal. In this thesis, we will show that there is a combinatorial way to determine the existence of monomials in the steady state ideal using the underlying structure of the network. This allows us to prove that there is a combinatorial condition that is enough to guarantee the steady state ideal is monomial. We introduce three operations on chemical reaction ...


A Phonetic Distance Approach To Intelligibility Between Mam Regional Dialects, Megan Simon Oct 2019

A Phonetic Distance Approach To Intelligibility Between Mam Regional Dialects, Megan Simon

Master's Theses

Mam, an indigenous Mayan language spoken primarily in Guatemala, has considerable internal diversity among its regional dialects. The purpose of this thesis is to estimate their varying degrees of intelligibility and to present groups of dialects whose speakers can be reasonably expected to understand one another. The analysis consists of two parts, the computation of a phonetic distance network and a series of sociocultural interviews. Phonetic distance was measured by Levenshtein distance between cognates in word lists and analyzed with a Neighbor-Net network. Interviews with Mam speakers focused on subjective judgments of intelligibility, contact, and social attitudes. Four main dialect ...


Extended Producer Responsibility And The Environmental Policy Implementation Process In California: A Case Study Of Paintcare, Justin Ian Weiss Oct 2019

Extended Producer Responsibility And The Environmental Policy Implementation Process In California: A Case Study Of Paintcare, Justin Ian Weiss

Master's Theses

Due to increasing volumes of certain types of waste and the cost of municipal waste management, California and local jurisdictions are pursuing legislation to engage manufacturers in the collection and disposal of the products they manufacture. These legislative frameworks take many forms, but many employ the “producer pays” principle commonly referred to as “extended producer responsibility” (EPR). These policies, which are more common in the European Union, are often contentious and difficult for U.S. governments to pursue, as targeted and influential industries resist policy implementation. The objective of this thesis was to better understand the reasons for the successful ...


The Effects Of Culture And Gender Roles On The Efficacy Of Social Support As A Coping Mechanism For Stress, Quy Minh Vu Oct 2019

The Effects Of Culture And Gender Roles On The Efficacy Of Social Support As A Coping Mechanism For Stress, Quy Minh Vu

Master's Theses

Though social support has been thought to be an effective coping mechanism for handling distress, this generalization comes with limitations in that social support is highly intertwined with specific characteristics that could alter both help-seeking behavior and its outcomes. The present study examined the effects of cultural differences on the effectiveness of differing social support sources (i.e., parents versus peers) between European American and Asian/Asian American samples, as well as the influence of gender role orientation on social support outcomes. Ninety-Five European American and Asian/Asian American participants were assigned to either a parent or peer social support ...


Dynamics And Ecological Implications Of The Ulva-Zostera Ecotone In Elkhorn Slough, California, María Vila Duplá Oct 2019

Dynamics And Ecological Implications Of The Ulva-Zostera Ecotone In Elkhorn Slough, California, María Vila Duplá

Master's Theses

Ecotones are transitional areas between adjacent ecological communities that have unique ecological qualities defined by space and time scales, and by the interactions between adjacent systems. Ecotones play an essential role in supporting biologically diverse communities, and are sensitive indicators of global change. An Ulva-Zostera ecotone extends along the northern shore of Seal Bend in Elkhorn Slough, an estuary located in central California. Although previous studies have mentioned the presence of the Ulva-Zostera ecotone, this was the first study to focus on understanding its driving factors, spatiotemporal dynamics, and overall ecological implications. A combination of habitat monitoring, water quality assessments ...


Mindfulness And Resilience As Predictors Of Burnout, Julie Tu Oct 2019

Mindfulness And Resilience As Predictors Of Burnout, Julie Tu

Master's Theses

The faster pace of work due to technological advances and globalization as well as global competition in the workforce may lead to increased chances of stress and burnout among employees. Understanding more predictors of burnout may help companies create better work environments to increase productivity and minimize consequences of burnout (e.g., higher absenteeism, turnover, substance abuse, anxiety, depression). However, not enough research has been done to study the degree to which personality traits predict burnout. Therefore, the purpose of the present study was to examine the degree to which trait mindfulness and trait resilience predict burnout. The study was ...


The Energetic Cost Of Anthropogenic Disturbance On The Southern Sea Otter (Enhydra Lutris Nereis), Heather Elizabeth Barrett Oct 2019

The Energetic Cost Of Anthropogenic Disturbance On The Southern Sea Otter (Enhydra Lutris Nereis), Heather Elizabeth Barrett

Master's Theses

With increased human populations and tourism in coastal areas, there is greater potential for disturbance of marine wildlife. Having high metabolic rates, sea otters (Enhydra lutris nereis) are at risk of increased energetic costs due to disturbance. To investigate these effects, sea otter activity in response to potential disturbance stimuli was recorded over three years, at three California locations: Monterey, Moss Landing, and Morro Bay. A hidden Markov Model was developed to examine how activity varies as a function of location, group size, pup to adult ratio, kelp canopy, and occurrence of and proximity to disturbance stimuli. Results were combined ...