Digital Commons Network^™

The Zero Truncated Poisson Burr X Family Of Distributions With Properties, Characterizations, Applications, And Validation Test, T. H.M. Aboulemagd, Mohammed S. Hamed, Gholamhossein Hamedani, M. M. Ali, Hafida Goual, Mustafa Ç. Korkmaz, Haitham M. Yousof

Mathematical and Statistical Science Faculty Research and Publications

The goal of this work is to introduce a new family of continuous distributions with a strong physical application. Some statistical properties are derived, and certain useful characterizations of the proposed family distributions are presented. Five applications are provided to illustrate the importance of the new family. A modified goodness-of-fit test for the new family in complete data case are investigated via two examples. We propose, as a first step, the construction of Nikulin-Rao-Robson statistic based on chi-squared fit tests for the new family in the case of complete data. The new test is based on the Nikulin-Rao-Robson statistic separately …

A Bayesian Nonparametric Multiple Testing Procedure For Comparing Several Treatments Against A Control, Luis Gutiérrez, Andrés Barrientos, Jorge González, Daniel Taylor-Rodríguez

Mathematics and Statistics Faculty Publications and Presentations

We propose a Bayesian nonparametric strategy to test for differences between a control group and several treatment regimes. Most of the existing tests for this type of comparison are based on the differences between location parameters. In contrast, our approach identifies differences across the entire distribution, avoids strong modeling assumptions over the distributions for each treatment, and accounts for multiple testing through the prior distribution on the space of hypotheses. The proposal is compared to other commonly used hypothesis testing procedures under simulated scenarios. Two real applications are also analyzed with the proposed methodology.

Stability Conditions For Coupled Oscillators In Linear Arrays, Pablo Enrique Baldivieso Blanco, J.J.P. Veerman

Mathematics and Statistics Faculty Publications and Presentations

In this paper, we give necessary conditions for stability of flocks in R. We focus on linear arrays with decentralized agents, where each agent interacts with only a few its neighbors. We obtain explicit expressions for necessary conditions for asymptotic stability in the case that the systems consists of a periodic arrangement of two or three different types of agents, i.e. configurations as follows: ...2-1-2-1 or ...3-2-1-3-2-1. Previous literature indicated that the (necessary) condition for stability in the case of a single agent (...1-1-1) held that the first moment of certain coefficients governing the interactions between agents has to be …

Counting And Coloring Sudoku Graphs, Kyle Oddson

Mathematics and Statistics Dissertations, Theses, and Final Project Papers

A sudoku puzzle is most commonly a 9 × 9 grid of 3 × 3 boxes wherein the puzzle player writes the numbers 1 - 9 with no repetition in any row, column, or box. We generalize the notion of the n² × n² sudoku grid for all n ∈ ℤ^≥2 and codify the empty sudoku board as a graph. In the main section of this paper we prove that sudoku boards and sudoku graphs exist for all such n; we prove the equivalence of [3]'s construction using unions and products of graphs to the definition of …

Predicting Spawning Habitat For Coho Salmon (Oncorhynchus Kisutch), Chinook Salmon (Oncorhynchus Tshawytscha), And Steelhead (Oncorhynchus Mykiss) Using Geospatially Constructed Stream Morphology From High-Resolution Lidar-Derived Digital Elevation Model And Field Survey Data In The Indian Creek Watershed, Mendocino County, California, Justin Patrick Bissell Mr.

Cal Poly Humboldt theses and projects

Restoration of anadromous salmonid habitat is of primary importance to the economic, historical, and cultural geography of the Pacific Northwest. Derivation and use of geospatial habitat models as guides to pinpoint key areas where limited restoration funding can be cost-effectively employed is of great importance. To this purpose, 1 meter resolution lidar-derived Digital Elevation Model data was acquired for the Indian Creek and neighboring watersheds in Mendocino County, California, and used together with field-acquired geomorphic stream data to geospatially model stream widths, depths, and streambank morphology. These geospatial covariates were field-verified in selected locations and then used in conjunction with …

Serving In The Kingdom: A Volunteer Experience In The Development Of Efl Literacy In Tonga, Melissa Wise

Cal Poly Humboldt theses and projects

For three years I had the privilege of living and serving in the Kingdom of Tonga, a group of islands in the South Pacific, as a Master’s International Program student and Peace Corps volunteer. In Tonga, I worked as an English Literacy Facilitator, partnering with counterparts on diverse projects to improve English language and literacy instruction in local schools.

In the most recent revision of its national curriculum, one of the sustainable development goals of the Tongan Ministry of Education is for teachers to learn strategies for the effective use of libraries, books, and technological resources in their teaching. To …

Effects Of Thinning And Prescribed Burning On Tree Resistance To Extreme Drought In A Sierra Nevada Mixed-Conifer Forest, California Usa, Chance C. Callahan

Cal Poly Humboldt theses and projects

Drought-induced tree mortality can drastically alter forest composition, structure, carbon dynamics, and ecosystem function. Increasingly, forest policy and management focuses on how to improve forest resistance and resilience to drought stress. This study used tree ring data at Teakettle Experimental Forest (TEF), a historically frequent fire mixed-conifer forest in the California Sierra Nevada, to quantify how prescribed fire and mechanical thinning conducted in 2001-2002 influenced stand and tree-level growth responses to the extreme California drought of 2012-2016. Overstory thinning and understory thinning significantly enhanced growth responses to treatments alone and treatments during the drought at the stand-level. In each year …

Mechanisms And Spatial Patterns Of Bark Beetle-Associated Mortality Following Variable Density Thinning Treatments In A Sierra Mixed-Conifer Forest, Alexis Bernal

Cal Poly Humboldt theses and projects

Long-term trends of tree mortality have increased over the last several decades, coinciding with above-average temperatures, high climatic water deficits, and bark beetle outbreaks. With the anticipation that drought and bark beetles may increase with climate change, uncertainty exists over the appropriate treatments that could ensure the future sustainability of forest resources and the ecosystem services that forests provide. Conventional thinning treatments are used to reduce stand density, with the assumption that reductions in competition can alleviate drought stress and enable trees to resist bark beetle attack. Alternative thinning treatments may also reduce stand density, but have a greater focus …

Towards A Critical Game Based Pedagogy, Justin K. Egan

Cal Poly Humboldt theses and projects

This thesis outlines and examines core concepts of game-based learning as identified by James Paul Gee, and Kurt Squire, among other scholars. These findings are then connected to the contemporary, transformative threshold concepts of composition—as explored in Naming What We Know. This connection seeks to argue game-based pedagogy may be an invaluable tool for introducing critical perspectives to composition students in order to better equip them with critical thinking strategies and cultural critiques, while improving their writing skills. A theoretical framework is presented in the form of four “Pillars” of a Critical Game-Based Pedagogy: Literacy, Identity, Social Learning, and Multimodality—all …

Overwinter Survival And Movement Of Juvenile Coho Salmon (Oncorhynchus Kisutch) In Relation To Large Woody Debris And Low-Velocity Habitat In Northern California Streams, John D. Deibner-Hanson

Cal Poly Humboldt theses and projects

Some studies suggest that Coho Salmon populations are limited by overwinter survival as a result of insufficient winter habitat. While many small-scale projects aim to define reach and basin-level habitat requirements for Coho Salmon, large-scale studies that assess multiple independent populations remain few. For my research, I quantified large woody debris (LWD) by volume and low-velocity rearing habitat (LVH) as percent area in three coastal watersheds of similar size in northern California to untangle the relationships between Coho Salmon overwinter survival, emigration timing and specific winter habitats. I used mark-recapture techniques with PIT tags to formulate Cormack-Jolly-Seber models for each …

Preservando Nuestra Lengua Materna: A Project Based Curriculum Created For High School Spanish For Native Speakers Class, Angela Tovar Alvarado

Cal Poly Humboldt theses and projects

It is projected that by 2050, Latinos in the United States, who are a minority, will move to become a majority. With an increasing influx of Native Spanish speaking students in our schools, it is more than likely these students will take some type of Spanish class in their high school career. For many native Speakers, Spanish is their dominant the language, but the mechanics behind the language are unknown to them. In this paper, I review the literature on the history of Spanish language classes in the United States, and discuss how project-based learning (PBL) in the Spanish language …

Distribution And Habitat Use Of A Recently Discovered Population Of Humboldt Martens In California, Holly E. Gamblin

Cal Poly Humboldt theses and projects

The Humboldt marten (Martes caurina humboldtensis) has declined from over 95% of its historic range in California, with only two populations remaining. In response to the forthcoming listing of the Humboldt marten a conservation assessment and strategy was developed to address the most important conservation needs for this species. This assessment identified an area near the California – Oregon border as the second extant population area in California based on a small number of recent detections. However little else was known of this population, and this prompted my investigation to determine 1) the distribution and potential population size …

Exploring Community Knowledge And Perceptions Of Flooding And Sea-Level Rise In King Salmon, California, Kristina Kunkel

Cal Poly Humboldt theses and projects

The coastal community of King Salmon, California could be at the highest risk of relative sea-level rise on the entire U.S. West Coast. In 2019, the community already experiences severe flooding at least annually and may be regularly inundated as early as 2050. Until this study, there had been no documented effort to reach out to the community to show them future sea-level rise projections, understand the context of life in King Salmon, and listen to their reactions and perceptions. This research utilized a mixed methods grounded theory approach integrating semi-structured interviews with King Salmon stakeholders, qualitative data analysis, public …

Assessing The Technical, Economic, And Environmental Feasibility Of Floating Solar Power Generation On Water Reservoirs In Vietnam, Phuong Anh Bui

Cal Poly Humboldt theses and projects

Vietnam has been developing an energy path involving increased renewable energy use. With over 7,000 existing water reservoirs, Vietnam has great potential to install floating solar photovoltaic (FPV) plants that will protect productive lands, reduce greenhouse gas emissions, and reduce water evaporation rates. This study investigates the technical, economic, and environmental feasibility of installing FPV in three reservoirs in Vietnam: Hoa Binh, Tri An, and Dau Tieng.

The capacities of the FPV plants assessed for three reservoirs range from 96 MW to 4,300 MW. The yearly solar generation from the three reservoirs ranges from 900 GWh to 13,700 GWh, and …

Modeling The Flow Of Hall Creek, Humboldt County, California Using Visualizing Ecosystem Land Management Assessments (Velma) And Calculating The Channel Forming Flow Using The Effective Discharge Calculation, Ethan A. Luckens

Cal Poly Humboldt theses and projects

Due to wide spread stream degradation across the globe, there is great potential for restoring stream and riverine habitat. Land managers often lack necessary information about the stream discharges of ungauged watersheds. This lack of data makes designing stream restoration projects in ungauged watersheds more difficult. This is especially true when trying to determine the channel-forming flow, the discharge that will support a stable channel geometry. In this study, the channel-forming flow was approximated using effective flow. Effective flow is the level of flow that transports to the greatest amount of sediments. One method for calculating effective flow is to …

Student Movements In The United States And Mexico: A Testimony, Roberto M. De Anda

Chicano/Latino Studies Faculty Publications and Presentations

The author reflects on his experiences teaching and going to graduate school in Mexico City in the late 1970s and early 1980s. I discuss my participation in Chicano Movement organizations before moving to Mexico, and the reasons that propelled me to go to graduate school there. I highlight lessons learned teaching as a volunteer at a normal popular, or people’s teachers college, and as a professor at the Universidad Autónoma Chapingo (UACh). I also describe my graduate studies at the Universidad Nacional Autónoma de México (UNAM). The conclusion focuses on the impact that these experiences had on the author’s professional …

Conceptual And Procedural Knowledge: A Framework For Analyzing Point-Of-Need Information Literacy Instruction, Amy Vanscoy

Communications in Information Literacy

The information literacy instruction (ILI) that occurs during a spontaneous information interaction, such as at the reference desk, is not clearly defined and not extensively researched. It differs, however, from classroom ILI, with its lesson plans, carefully considered learning outcomes, and planned learning activities. This paper uses the framework of conceptual and procedural knowledge, drawn from education research, to analyze point-of-need ILI. Digital reference transcripts were analyzed using this framework, and examples of ILI from the transcripts were categorized to make sense of how conceptual and procedural knowledge manifest in point-of-need ILI. This conceptual/procedural focus acknowledges the unique context of …

Venture Bearding, Benjamin P. Edwards, Ann C. Mcginley

Scholarly Works

“Venture bearding,” a term that we coin in this Article, describes processes of obscuring and covering socially stigmatized identities in business environments. This Article introduces distinctive identity performance strategies from the technology, startup, and venture capital context into the legal literature and discusses what their existence explains about business environments and capital formation. Venture bearding, as we use the term, describes behaviors that persons with contextually stigmatized identities adopt to access social status and capital. In some instances, women, who are stigmatized in this context, may employ men as front persons to conceal that the venture is an exclusively women-owned …

Dirty Thinking About Law And Democracy In Rucho V. Common Cause, Luis Fuentes-Rohwer, Guy-Uriel E. Charles

Articles by Maurer Faculty

In order to understand the division in Rucho and, as importantly, to understand why the plaintiffs in Rucho failed to win over the conservatives on the Court, we have to come to terms with these different worldviews on the Court. Is sordid politics an inherently necessary and arguably normatively good part of the political process, and thus a necessary part of our representative institutions? Relatedly, do substantive fairness principles exist—outside of race and the equal-population principle—that constrain political actors when they design electoral structures to favor themselves at the expense of their opponents? We take up these questions in the …

Aba Rpte Conservation Easement Task Force Report: Recommendations Regarding Conservation Easements And Federal Tax Law, W. William Weeks

Articles by Maurer Faculty

Authors' Synopsis: In October 2015, the American Bar Association's Real Property, Trust and Estate Law (RPTE) section convened a Conservation Easement Task Force. The objective of the Task Force was to provide recommendations regarding federal tax law as it relates to conservation easements. This Report is the culmination of the Task Force's work. Part I of the Report is an Executive Summary of the Task Force's recommendations. Part II provides the background necessary to understand the Task Force's recommendations. Part III briefly sets forth the Task Force's comments on the Tax Cuts and Jobs Act of 2017 as it relates …

Initial Development Of The Perception Of Information Literacy Scale (Pils), Matthew Doyle, Britt Foster, Mariya A. Yukhymenko-Lescroart

Communications in Information Literacy

The ACRL Framework for Information Literacy for Higher Education has provided academic librarians a guiding document to facilitate the development of information literacy skills in students. Despite widespread adoption of the Framework in academic libraries, a lack of valid and reliable Framework-based scales for assessing students’ knowledge practices and dispositions hinders further understanding of student information literacy. The current article describes the development and testing of the Perception of Information Literacy Scale (PILS). The participants in this study were 443 graduate students. The resulting scale is made up of 36 items that measure seven distinct constructs of information literacy. …

Joint Stabilization And Direction Of 360° Videos, Chengzhou Tang, Oliver Wang, Feng Liu, Ping Tan

Computer Science Faculty Publications and Presentations

Three-hundred-sixty-degree (360°) video provides an immersive experience for viewers, allowing them to freely explore the world by turning their head. However, creating high-quality 360° video content can be challenging, as viewers may miss important events by looking in the wrong direction, or they may see things that ruin the immersion, such as stitching artifacts and the film crew. We take advantage of the fact that not all directions are equally likely to be observed; most viewers are more likely to see content located at “true north,” i.e., in front of them, due to ergonomic constraints. We therefore propose 360° video …

Context-Aware Synthesis For Video Frame Interpolation, Simon Niklaus, Feng Liu

Computer Science Faculty Publications and Presentations

Video frame interpolation algorithms typically estimate optical flow or its variations and then use it to guide the synthesis of an intermediate frame between two consecutive original frames. To handle challenges like occlusion, bidirectional flow between the two input frames is often estimated and used to warp and blend the input frames. However, how to effectively blend the two warped frames still remains a challenging problem. This paper presents a context-aware synthesis approach that warps not only the input frames but also their pixel-wise contextual information and uses them to interpolate a high-quality intermediate frame. Specifically, we first use a …

Good Similar Patches For Image Denoising (Poster), Si Lu

Computer Science Faculty Publications and Presentations

Patch-based denoising algorithms like BM3D have achieved outstanding performance. An important idea for the success of these methods is to exploit the recurrence of similar patches in an input image to estimate the underlying image structures....

Four-Fold Increase In Solar Forcing On Snow In Western U.S. Burned Forests Since 1999, Kelly E. Gleason, Joseph R. Mcconnell, Monica M. Arienzo, Nathan Chellman, Wendy M. Calvin

Environmental Science and Management Faculty Publications and Presentations

Forest fires are increasing across the American West due to climate warming and fire suppression. Accelerated snow melt occurs in burned forests due to increased light transmission through the canopy and decreased snow albedo from deposition of light-absorbing impurities. Using satellite observations, we document up to an annual 9% growth in western forests burned since 1984, and 5 day earlier snow disappearance persisting for >10 years following fire. Here, we show that black carbon and burned woody debris darkens the snowpack and lowers snow albedo for 15 winters following fire, using measurements of snow collected from seven forested sites that …

Roots Mediate The Effects Of Snowpack Decline On Soil Bacteria, Fungi, And Nitrogen Cycling In A Northern Hardwood Forest, Patrick O. Sorensen, Jennifer M. Bhatnagar, Lynn M. Christenson, Jorge Duran, Timothy J. Fahey, Melany C. Fisk, Adrien C. Finzi, Peter M. Groffman, Jennifer L. Morse, Pamela H. Templer

Environmental Science and Management Faculty Publications and Presentations

Rising winter air temperature will reduce snow depth and duration over the next century in northern hardwood forests. Reductions in snow depth may affect soil bacteria and fungi directly, but also affect soil microbes indirectly through effects of snowpack loss on plant roots. We incubated root exclusion and root ingrowth cores across a winter climate-elevation gradient in a northern hardwood forest for 29 months to identify direct (i.e., winter snow-mediated) and indirect (i.e., root-mediated) effects of winter snowpack decline on soil bacterial and fungal communities, as well as on potential nitrification and net N mineralization rates. Both winter snowpack decline …

When Pets Become Pests: The Role Of The Exotic Pet Trade In Producing Invasive Vertebrate Animals, Julie I. Lockwood, Dustin J. Welbourne, Christina M. Romagosa, Phillip Cassey, Nicholas E. Mandrak, Angela L. Strecker, Brian Leung, Oliver C. Stringham, Bradley Udell, Diane J. Episcopio-Sturgeon, Michael F. Tlusty, James Sinclair, Michael R. Springborn, Elizabeth F. Plenaar, Andrew L. Rhyne, Reuben Keller

Environmental Science and Management Faculty Publications and Presentations

The annual trade in exotic vertebrates as pets is a multi-billion- dollar global business. Thousands of species, and tens of millions of individual animals, are shipped both internationally and within countries to satisfy this demand. Most research on the exotic pet trade has focused on its contribution to native biodiversity loss and disease spread. Here, we synthesize information across taxa and research disciplines to document the exotic pet trade’s contribution to vertebrate biological invasions. We show recent and substantial worldwide growth in the number of non-native animal populations introduced via this invasion pathway, which demonstrates a strong potential to increase …

Floodplains Provide Important Amphibian Habitat Despite Multiple Ecological Threats, Meredith Holgerson, Adam Duarte, Marc P. Hayes, Michael J. Adams, Julie A. Tyson, Keith A. Douville, Angela L. Strecker

Environmental Science and Management Faculty Publications and Presentations

Floodplain ponds and wetlands are productive and biodiverse ecosystems, yet they face multiple threats including altered hydrology, land use change, and non-native species. Protecting and restoring important floodplain ecosystems requires understanding how organisms use these habitats and respond to altered environmental conditions. We developed Bayesian models to evaluate occupancy of six amphibian species across 103 off-channel aquatic habitats in the Chehalis River floodplain, Washington State, USA. The basin has been altered by changes in land use, reduced river–wetland connections, and the establishment of non-native American bullfrogs (Rana catesbeiana = Lithobates catesbeianus) and centrarchid fishes, all of which we hypothesized could …

Analysis Of The Cryptocurrency Adoption Decision: Literature Review, Saeed Alzahrani, Tugrul Daim

Engineering and Technology Management Faculty Publications and Presentations

Cryptocurrency is a recent and significant innovation in the financial industry. The goal is to offer a currency that is not tied, created, or backed by a government. Cryptocurrency use the Blockchain technology as the financial platform. Cryptocurrency adoption level has increased, and the market has grown dramatically. There have not been enough literature investigating the adoption and acceptance of the cryptocurrency by users. The aim of this paper is to fill the gap in the current literature by investigating the current cryptocurrency adoption level, adoption-influencing factors, providing an in-depth analysis of these factors and discussing some pitfalls surrounding the …

Strategic Technology Planning In Product-Service Systems With Embedded Customer Experience Requirements, Soheil Zarrin, Tugrul Daim

Engineering and Technology Management Faculty Publications and Presentations

The undeniable impact of Artificial Intelligence and Internet of things on value proposition and offerings of firms, drive many strategic initiatives in organizations to design solutions which integrate products and services. Since designing Product-Service Systems inherently introduce high level of complexity and adding artificial intelligence requirements as one of the influential factors overcomplicate the long-term planning processes, the strategic planners seek for effective tools to enable them to manage the level of complexity as well as empowering them to communicate the outcomes with the whole organization. In order to achieve this purpose, Technology Roadmaps provides a structured and flexible means …