Digital Commons Network^™

Convenient Tail Bounds For Sums Of Random Tensors, Shih Yu Chang, Wen Wei Lin

Faculty Research, Scholarly, and Creative Activity

This work prepares new probability bounds for sums of random, inde-pendent, Hermitian tensors. These probability bounds characterize large-deviation behavior of the extreme eigenvalue of the sums of random tensors. We extend Laplace transform method and Lieb’s concavity theorem from matrices to tensors, and apply these tools to generalize the classical bounds associated with the names Chernoff, Ben-nett, and Bernstein from the scalar to the tensor setting. Tail bounds for the norm of a sum of random rectangular tensors are also derived from corollaries of random Hermitian tensors cases. The proof mechanism can also be applied to tensor-valued martingales and tensor-based …

Oceanic Zircon Records Extreme Fractional Crystallization Of Morb To Rhyolite On The Alarcon Rise Mid-Ocean Ridge, Ryan Portner, Brian M. Dreyer, David A. Clague, Nathan R. Daczko, Paterno R. Castillo

Faculty Research, Scholarly, and Creative Activity

The first known occurrence of rhyolite along the submarine segments of the mid-ocean ridge (MOR) system was discovered on Alarcon Rise, the northernmost segment of the East Pacific Rise (EPR), by the Monterey Bay Aquarium Research Institute in 2012. Zircon trace element and Hf and O isotope patterns indicate that the rhyolite formed by extreme crystal fractionation of primary mid-ocean ridge basalt (MORB) sourced from normal to enriched MOR mantle with little to no addition of continental lithosphere or hydrated oceanic crust. A large range in zircon ϵHf spanning 11 ϵ units is comparable to the range of whole rock …

Broadcast Dimension Of Graphs, Jesse Geneson, Eunjeong Yi

Faculty Research, Scholarly, and Creative Activity

In this paper we initiate the study of broadcast dimension, a variant of metric dimension. Let G be a graph with vertex set V (G), and let d(u, w) denote the length of a u − w geodesic in G. For k ≥ 1, let dk (x, y) = min{d(x, y), k +1}. A function f: V (G) → Z+ ∪{0} is called a resolving broadcast of G if, for any distinct x, y ∈ V (G), there exists a vertex [Formula Presented]. The broadcast dimension, bdim(G), of G is the minimum of [Formula Presented] over all resolving broadcasts of …

New Efficient Approach To Solve Big Data Systems Using Parallel Gauss–Seidel Algorithms, Shih Yu Chang, Hsiao Chun Wu, Yifan Wang

Faculty Research, Scholarly, and Creative Activity

In order to perform big-data analytics, regression involving large matrices is often necessary. In particular, large scale regression problems are encountered when one wishes to extract semantic patterns for knowledge discovery and data mining. When a large matrix can be processed in its factorized form, advantages arise in terms of computation, implementation, and data-compression. In this work, we propose two new parallel iterative algorithms as extensions of the Gauss–Seidel algorithm (GSA) to solve regression problems involving many variables. The convergence study in terms of error-bounds of the proposed iterative algorithms is also performed, and the required computation resources, namely time-and …

Evaluation Of Mpa Designs That Protect Highly Mobile Megafauna Now And Under Climate Change Scenarios, M. E. Gilmour, J. Adams, B. A. Block, J. E. Caselle, A. M. Friedlander, E. T. Game, E. L. Hazen, N. D. Holmes, K. D. Lafferty, S. M. Maxwell, D. J. Mccauley, E. M. Oleson, K. Pollock, S. A. Shaffer, N. H. Wolff, A. Wegmann

Faculty Research, Scholarly, and Creative Activity

Marine protected area (MPA) designs, including large-scale MPAs (LSMPAs; >150,000 km2), mobile MPAs (fluid spatiotemporal boundaries), and MPA networks, may offer different benefits to species and could enhance protection by encompassing spatiotemporal scales of animal movement. We sought to understand how well LSMPAs could benefit nine highly-mobile marine species in the tropics now and into the future by: 1) evaluating current range overlap within a LSMPA; 2) evaluating range overlap under climate change projections; and 3) evaluating how well theoretical MPA designs benefit these nine species. We focused on Palmyra Atoll and Kingman Reef, a 2000 km2 area within the …

Future Changes In Extreme Precipitation Over The San Francisco Bay Area: Dependence On Atmospheric River And Extratropical Cyclone Events, Christina M. Patricola, Michael F. Wehner, Emily Bercos-Hickey, Flor Vanessa Maciel, Christine May, Michael Mak, Olivia Yip, Anna M. Roche, Susan Leal

Faculty Research, Scholarly, and Creative Activity

Extreme precipitation poses a major challenge for local governments, including the City and County of San Francisco, California, as flooding can damage and destroy infrastructure and property. As the climate continues to warm, reliable future precipitation projections are needed to provide the best possible information to decision makers. However, future changes in the magnitude of extreme precipitation are uncertain, as current state-of-the-art global climate models are typically run at relatively coarse horizontal resolutions that require the use of convective parameterization and have difficulty simulating observed extreme rainfall rates. Here, we performed ensembles of convection-permitting regional climate model simulations to investigate …

Information Literacy Competency Of Secondary School Students: A Case Study Of Vijayapura District, Deepa 7892186627 Kulkarni Dr, Ramesha Bb Prof

Library Philosophy and Practice (e-journal)

The study investigated the information literacy competencies possessed by secondary school students in Vijayapura District with a focus on the knowledge and skill level. Information literacy is very important, especially in the field of education where the students required to be updated in accessing the information and knowledge required for their academic work. This is possible only with the development of information literacy competencies. In the present study survey method was adopted for the study. A structured questionnaire was used for data collection and purposive sampling technique was used to select sample size of 200 students, from selected two secondary …

Integration Of Linked Open Data Authorities With Openrefine : A Methodology For Libraries, Sukumar Mandal

Library Philosophy and Practice (e-journal)

The primary purpose of this paper is to explore the integration process of linked open data authority with OpenRefine for easy access of related metadata towards the creation of data cleaning and updating in a modern integrated library system. The integration process and methods are based on the API of reconciliation repositories collected from web resources. This integrated framework will be designed and developed on OpenRefine techniques and components based on RDF, CSV, SPARQL, and Turtle scripts. This integrated framework is based on JAVA and Apache Web Server for running the OpenRefine on the Ubuntu Platform. This integrated framework has …

Meta-Algorithms In Machine Learning, Vishnu Pendyala

Open Educational Resources

This presentation explores how to make the best of models impacted by bias and variance. Meta-learning minimizes loss. Ensemble methods, including Bagging, Adaboost, Random Forest, Gradient Boosting, and Stacking, are discussed. These methods perturb data (X or Y) using techniques like bootstrap sampling, k-fold sampling, weighted sampling, and random subspaces. Models are generated in parallel or sequentially, with aggregation strategies such as mean, mode, weighted response, and metamodel. The presentation also touches upon deep learning and one-shot learning, and explains how distances become less meaningful in high dimensions.

More details: https://events.vtools.ieee.org/m/315184

Video Recording: https://ieeetv.ieee.org/video/meta-algorithms-in-machine-learning

The Role Of Ions In Irradiated Astrophysical O2 Ice, Kristen J. Darnell

Master's Theses

Cosmic ices contain ions produced by irradiation from cosmic rays and UVphotons, yet solid-phase ion-ice reactions are currently ignored in all astrochemical models, even though gas-phase ion-molecule reactions are arguably the single-most important class of reactions in astrochemistry. Thus, developing a model that includes solid-phase ion-ice reactions is essential to accurately model interstellar ice chemistry, especially given the recent launch of the James Webb Space Telescope. To fill this gap, we have compiled a solid-phase chemical network for use in a rate-based irradiated ice astrochemical model which, for the first time, includes ionic species produced via the photoionization of the …

The Shallow Benthic Invertebrate Recovery From The End-Cretaceous Mass Extinction Across The Gulf Coastal Plain, Ronan B. Beltracchi

Master's Theses

The Gulf Coastal Plain, in the southeastern United States, contains several sites with well-preserved fossil assemblages from the Cretaceous- Paleogene boundary (K/Pg). Changes in benthic macroinvertebrate assemblages after mass extinction events commonly include reduction in body size of surviving organisms and preferential survival based on ecospace occupation. This study examines patterns of functional ecology and body size change in mollusk fossils from bulk samples collected throughout the post-extinction recovery interval at a well-studied boundary site from Darting Minnow Creek in Brazos, Texas USA and a recently described K/Pg boundary section on the Ouachita River in Malvern, Arkansas USA. The proportional …

Aac And Multilingualism In Children With Complex Communication Needs: Perspectives Of Filipino Parents And Teaching Professionals, Anne Aubrey V. Dulay

Master's Theses

Parents and teaching professionals of children who use augmentative and/or alternative communication (AAC) systems within multilingual environments often face complicated decisions regarding their language choices and practices. Understanding parents’ and teaching professionals’ perceptions on this topic can assist AAC service providers in supporting them better during intervention. This study aimed to explore the perceptions of Filipino parents and teaching professionals regarding AAC and multilingualism. Specifically, this study sought to describe parents’ and teaching professionals’ language choices and practices when interacting with the AAC communicator and to describe the factors that influence their language choices and practices. This study followed a …

The Influence Of Happiness On The Perception Of Ingroup And Outgroup Stereotypes, Diego R. Gómez

Master's Theses

An important social issue that influences judgments between ingroups and outgroups is how moods influence stereotype judgments. For instance, research on moods has provided evidence that happiness increases stereotype judgments. However, research has not considered the impact of individuals’ ingroup membership and how it may moderate these effects. The purpose of this study was to explore the potential moderating role that ingroup membership may have on the effects of happiness on stereotype judgments. University student participants in a happy or neutral induced mood completed a disciplinary task to assess guilt of either a Hispanic or non-Hispanic suspect of an assault …

Unmasking Medical Fake News Using Machine Learning Techniques, Garima Chaphekar

Master's Theses

Fake news has always been a critical and challenging problem in the informationenvironment. The propagation of false news is a serious concern, especially in medical information, which can have dangerous and potentially deadly consequences. With the tsunami of online misinformation, it is crucial to fight fake medical news. In this study, we use machine learning techniques to help detect fake news related to diseases, including COVID-19, Ebola, Zika, SARS, Cancer, and Polio. To facilitate research in this space, we create a new medical dataset named MedHub. MedHub has records from two publicly available datasets on COVID and manually curated facts …

Steric Effect On Benzyl Ether Olefines Under Sadmet Polymerization, Su Hu

Master's Theses

Acyclic diene metathesis (ADMET) polymerization, a type of olefin cross metathesis, is a step-growth and condensation polymerization that can be used to synthesize hydrocarbon polymers with diverse functional groups. Traditional ADMET with symmetric α,ω-dienes is not selective and can only form homopolymers or statistical copolymers. Changing to monomers with acrylate functional groups allows selective reactivity to form block and alternating polymers. In this project, we want to explore other functional groups that result in selective reactivity to form advanced polymer architectures via what we have termed selective acyclic diene metathesis (SADMET) polymerization. Developing new functionalized monomers for SADMET polymerization allows …

Exploring Shared Book Reading Among Mexican And Dominican Parent-Child Dyads, Maria Flores Lopez

Master's Theses

Using an ethnically diverse sample of Mexican and Dominican families from the NewYork metro area, the present study investigated the behaviors of parents and their three-yearold children, during shared book reading (SBR). The aspect of child behavior that was investigated was engagement, which was assessed by observations of children’s attentiveness and verbal participation during the reading activity. Children within this sample were highly engaged, with most demonstrating active engagement, the highest level of engagement in this study. When looking at the behaviors of parents, the use of two sets of strategies were investigated: interactive book reading strategies and language use. …

Fragmentation Drives Dominant Plant Encroachment On A Horizontal Wastewater Treatment Levee, Joia S. Fishman

Master's Theses

Urban coastal wetlands protect humans from sea-level rise while providing valuable habitat for wildlife. Degradation and loss of these wetlands threaten urban infrastructure such as wastewater treatment facilities. Nature-based adaptive solutions with the combined purposes of bioremediation, coastal defense, and habitat creation are being tested to make communities safer and more resilient. The current research examines a 6-year-old experimental horizontal levee at the Oro Loma Sanitary District in San Lorenzo, California. Using horizontal transects and quadrat sampling, I compare the success of two planting strategies – a wet meadow and a riparian scrub community – on an ecotone slope. I …

Origins And Relationships Of The Units In And Adjacent To The Ross Lake Fault Zone, North Cascades, Washington, Leonard Hogan

Master's Theses

The North Cascades of Washington preserves a wide range of crustal levels in andadjacent to a Cretaceous magmatic arc. Field, petrographic, and detrital zircon geochronological research focused on a discontinuous, 55-km-long belt of metasedimentary rocks in the NW-striking Ross Lake fault zone (RLFZ) within the North Cascades. In the NW, metapelitic rocks of the Little Jack unit have an Early Jurassic maximum depositional age (MDA) and strong ductile fabrics in contrast to clastic rocks on the E with an Early Cretaceous MDA and primary structures, confirming the presence of the dextral Hozameen fault. To the SE, the oldest unit (~110 …

Mechanical Stabilization By Cyclic Compression Of Composite Polymer Electrolytes For Lithium-Ion Batteries, Nishad Mulay

Master's Theses

Composite polymer electrolytes (CPEs) for lithium-ion batteries provide an effectivebalance of ionic conductivity, mechanical robustness, and safety. Loss of charge capacity, however, is caused by multiple contributing factors, such as dendrite formation, changes in polymer crystallization, and reconfiguration of porous electrodes. In this thesis we specifically examine mechanical changes in the composite electrolyte layer. The hypothesis of this investigation is that the addition of rigid particles to a polymer electrolyte counteracts the fatigue softening effect caused by cyclic dimensional changes, as would be experienced during charge and discharge cycles. We apply cyclic compression to mimic stress cycling that is caused …

Buried Treasure In San Francisco’S Golden Gate Park: Changing Tastes In The Twentieth Century As Seen Through The Music Of The Golden Gate Park Concert Band, Nathaniel L. Pergamit

Master's Theses

Buried deep under the Spreckels Temple of music, the bandstand In San Francisco’s Golden Gate Park, lay a treasure trove of sheet music and concert programs belonging to the Golden Gate Park Concert Band. This band, which has delighted audiences and park-goers in San Francisco for 140 years, had over a thousand scores and programs each waiting to be archived and preserved. From documents marked “Property of the WPA,” to handwritten letters from composers, to photographs of since forgotten events, these newly archived materials detail historic trends that shed light on San Francisco’s unique civic culture. Along with conventional critical …

The Influence Of Cultural Stigma On Perceptions Of Mental Illness, Rakshitha Mohankumar

Master's Theses

The stigma of mental illness can often lead to the afflicted individual not receiving the professional help they need and thereby worsening their condition, which has serious consequences both for themselves and their loved ones. Moreover, stigma surrounding mental illness varies from culture to culture. This research study highlighted the significance of studying stigma and long-term coping with a loved one’s mental health issues across cultures. Differences in perceptions of mental health based on the type of culture and (in)experience of growing up with someone who had mental health issues were tested. I predicted that there were main effects of …

Association Between Stone Fruit Intake And Markers Of Cardiovascular Disease Risk Among United States Adults: Nhanes 2017-2018, Lasya S. Shah

Master's Theses

Cardiovascular Disease (CVD) is the most common cause of mortality in the world affecting people from all backgrounds. There is abundant evidence supporting diet affecting the risk for CVD. The consumption of fruits and vegetables is inversely related to CVD risk factors, likely due to their content of phenolic compounds. Although stone fruits contain high quantities of phenolic compounds, it remains unclear if their intake is associated with CVD risk. In this study, data from the National Health and Nutrition Examination Survey 2017-2018 were used to estimate the consumption level of stone fruits and whether it was associated with CVD …

The Spatial Distribution Of Mercury Contamination In The Yolo Bypass, California, Thomas S. Mykytyn

Master's Theses

Gold and mercury mining in the latter half of California’s 19th century resulted in massive and lingering alterations to downstream ecosystems through sedimentation and mercury contamination. Located at the confluence of Sierra Nevada and Coast Range watersheds, the Yolo Bypass is a critical conveyor of flood waters from the Lower Sacramento Valley to the Sacramento–San Joaquin Delta. Sedimentation in the bypass diminishes its flood conveyance capacity, and Hg contamination is hazardous to humans and ecosystems. The purpose of this study is to locate and quantify mercury contamination in the Yolo Bypass. Concentrations of total mercury ([THg]) were measured in 22 …

Achieving Location Privacy In Ios Platform Using Location Privacy Framework, Anna Systaliuk

Master's Theses

Rising popularity of location-services mobile applications and geotagging digitalactivities resulted in astonishing amount of mobility data collected from user devices, raising privacy concerns regarding the way this data is extracted and handled. Despite numerous studies concluded that human location trace is highly unique and poses great re-identification risks, modern mobile operating systems fell short of implementing granular location access mechanism. Existing binary location access resulted into location-based-services being able to retrieve precise user’s coordinates regardless of how much details their functionality actually require and sell it to data brokers. This paper aims to provide practical solution how a mobile operating …

Comparative Study Between The Creep And Shrinkage Prediction Models, Abdulla Tahsin

Master's Theses

Seven creep and shrinkage prediction models (ACI 209R-92, B3, B4, CEB MC 90-99, fib MC2010, AASHTO 2020, GL 2000) have been evaluated using five statistical methods. The statistical methods utilized in this study are the residual method, including the average and the standard deviation of the residual, the CEB mean deviation MCEB, the CEB mean square error FCEB, the CEB coefficient of variation VCEB, and the modified coefficient of variation method ωm. The study utilized the RILEM and NU-ITI databases. Results show that the ACI 209R-92 and the B3 Models produced the most accurate creep and shrinkage predictions compared to …

Smartrec - A Smart Conversational Recommendation System Using Semantic Knowledge Graphs, Sudha Vijayakumar

Master's Theses

CRS strives to return the most relevant recommendations to users through a multi-turn interactive conversation. The Covid-19 pandemic has undoubtedly accelerated the pace of adoption of conversational AI systems by many online platforms needing to provide highly available customer support. This ongoing demand calls for the need to implement more generic and efficient conversational agents and recommendation engines that can provide customers with the required information at every stage of the user’s interaction with the e-commerce platform. This study presents a Smart Conversational AI-based recommendation system - SMARTREC, which enables a multi-turn conversation with the user to understand the context …

Extent Of Utilisation And Satisfaction Of Open-Access Electronic Resources By Postgraduate Students Of Federal Universities In South South, Nigeria, Ufuoma Dymphna Onobrakpor

Library Philosophy and Practice (e-journal)

Open-Access electronic resources are the unrestricted information resources the students find readily accessible for use. This study examined the extent of utilisation and satisfaction of open- access resources by Postgraduate students of federal Universities in South South, Nigeria. Descriptive survey design was used, while the instrument for data collection was the questionnaire. A sample of 349 was arrives at from a population of 1401 Doctoral (PhD) and Masters of Education (M.Ed) postgraduate students from four federal Universities of the south-south geo-political zone of Nigeria using multi-stage sampling techniques. 293 of instrument were retrieved after administration, given 84% of the sample …

An Exploratory Study On How Math Stories Engage Young Learners In Mathematical Sense-Making, Maria Gigi Carunungan

Dissertations

This is an exploratory study of how pedagogy in the form of math stories, shapes young learners’ perceptions, motivations, and sense-making of math concepts. The research is presented in an exploratory documentary, with audio-video data collected through the iPhone. The pilot test of story-driven math learning solutions was conducted by two teachers with eight first grade children from diverse backgrounds in an afterschool program. This study also includes interviews of the teachers, educational leaders and specialists in primary school curricula, children’s literature, and math education. The results of the pilot validated the efficacy of story-driven math learning solutions for mathematical …

Pertenecemos: Trajectories Of Belonging, Knowing, And Discovering For Underrepresented Undergraduate Communicative Disorders And Sciences Students In California State Universities, Marcella C. Mccollum

Dissertations

The purpose of this study was to identify the ways that seniors in undergraduate programs in speech, language, and hearing sciences engaged with the department as they entered into their undergraduate programs, the factors that they considered when deciding whether to apply to graduate school in speech-language pathology, and perceptions of supports and barriers to entering into graduate school. This study partnered with seniors enrolled in public California university programs designed for future speech-language pathologists. A mixed methods design was utilized to provide a holistic account of student experiences. Three major themes emerged from the study. Throughout the process within …

The Role Of School Counselors In Advocating For Social Justice For All Students During The Covid-19 Pandemic, Amna Jaffer

Dissertations

The field of K–12 school counseling has evolved to embrace social–emotional and mental wellness aspects of students in addition to academic and career/college readiness. Social justice advocacy has been added to the role of school counselor by professional and educational entities. What is less clear is how well-versed school counselors are in social justice advocacy competencies, whether they are equipped to lead and advocate for social justice, barriers and accomplishments in doing so, and ways in which this role may be further developed and integrated into the field of school counseling, particularly in the context of the COVID-19 pandemic. As …