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Physical Sciences and Mathematics Commons™

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Eastern Washington University

2018

Articles 1 - 9 of 9

Full-Text Articles in Physical Sciences and Mathematics

What Obstacles Prevent Students From Engaging In Environmentally Friendly Behaviors?, Carrie Cutler, Loretta Sohappy May 2018

What Obstacles Prevent Students From Engaging In Environmentally Friendly Behaviors?, Carrie Cutler, Loretta Sohappy

2018 Symposium

According to the Environmental Protection Agency (EPA)the United States generated 33 million tons of plastic waste in 2014 of which only 9.5% was recycled. In addition Americans use over 17 million barrels of oil a year to meet demands for plastic water bottles. Any reusable plastic that gets thrown away creates the need to harvest new raw materials contributing to pollution and energy consumption. If Americans consumed 50% fewer plastic water bottles per year they would save enough oil to power one million cars for six months. The purpose of this study was to identify college students’ attitudes barriers and …

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Determining Vulnerability Using Attack Graphs: An Expansion Of The Current Fair Model, Beth M. Anderson Jan 2018

Determining Vulnerability Using Attack Graphs: An Expansion Of The Current Fair Model, Beth M. Anderson

EWU Masters Thesis Collection

Factor Analysis of Information Risk (FAIR) provides a framework for measuring and understanding factors that contribute to information risk. One such factor is FAIR Vulnerability; the probability that an event involving a threat will result in a loss. An asset is vulnerable if a threat actor’s Threat Capability is higher than the Resistance Strength of the asset. In FAIR scenarios, Resistance Strength is currently estimated for entire assets, oversimplifying assets containing individual systems and the surrounding environment. This research explores enhancing estimations of FAIR Vulnerability by modeling interactions between threat actors and assets through attack graphs. By breaking down the …

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Population Dynamics And Water Resource Consumption In Spokane, Wa, Daniel Jesus Castillo Jan 2018

Population Dynamics And Water Resource Consumption In Spokane, Wa, Daniel Jesus Castillo

EWU Masters Thesis Collection

No abstract provided.

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Glyph Based Segmentation Of Chinese Calligraphy Characters In The "Collected Characters" Stele., David A. Mcinnis Jan 2018

Glyph Based Segmentation Of Chinese Calligraphy Characters In The "Collected Characters" Stele., David A. Mcinnis

EWU Masters Thesis Collection

Text character segmentation is the process of detecting the bounding box position of individual characters within a written text document image. The character segmentation problem remains extremely difficult for ancient Chinese calligraphy documents. This paper examines a glyph-based segmentation technique for segmenting Chinese Calligraphy characters in the "Collected Characters". The glyph-based character segmentation pipeline utilizes a combination of well-understood image processing techniques in a novel pipeline which is able to detect Chinese calligraphy characters from ink-blots with a good reliability.

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A Practical And Efficient Algorithm For The K-Mismatch Shortest Unique Substring Finding Problem, Daniel Robert Allen Jan 2018

A Practical And Efficient Algorithm For The K-Mismatch Shortest Unique Substring Finding Problem, Daniel Robert Allen

EWU Masters Thesis Collection

This thesis revisits the k-mismatch shortest unique substring (SUS) finding problem and demonstrates that a technique recently presented in the context of solving the k-mismatch average common substring problem can be adapted and combined with parts of the existing solution, resulting in a new algorithm which has expected time complexity of O(n logk n), while maintaining a practical space complexity at O(kn), where n is the string length. When k > 0, which is the hard case, the new proposal significantly improves the any-case O(n2) time complexity of the prior best method for k-mismatch SUS finding. Experimental study …

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The Application Of Gpu To Molecular Communication Studies, Tobias J. Cain Jan 2018

The Application Of Gpu To Molecular Communication Studies, Tobias J. Cain

EWU Masters Thesis Collection

This thesis applies the recent trends in parallel processing, via graphics processing unit (GPU), to the field of molecular communications (MC), an investigation into communication possibilities of futuristic in vivo nanomachines. Existing MC simulations have not fully accounted for structural boundaries and the associated simulation of a massive number of messenger molecule paths for stochastic evaluation. These molecules are influenced by a Brownian motion as well as the flow of the blood, which is modeled using numerical methods based on the Fokker-Planck stochastic differential equation. By using a GPU these paths can be calculated on a massive scale, both in …

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Gpu Accelerated Risk Quantification, Forrest L. Ireland Jan 2018

Gpu Accelerated Risk Quantification, Forrest L. Ireland

EWU Masters Thesis Collection

Factor Analysis of Information Risk (FAIR) is a standard model for quantitatively estimating cybersecurity risks and has been implemented as a sequential Monte Carlo simulation in the RiskLens and FAIR-U applications. Monte Carlo simulations employ random sampling techniques to model certain systems through the course of many iterations. Due to their sequential nature, FAIR simulations in these applications are limited in the number of iterations they can perform in a reasonable amount of time. One method that has been extensively used to speed up Monte Carlo simulations is to implement them to take advantage of the massive parallelization available when …

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The Source Of Excess Nutrients To Pine Draw, Turnbull National Wildlife Refuge, Henry Price Jan 2018

The Source Of Excess Nutrients To Pine Draw, Turnbull National Wildlife Refuge, Henry Price

EWU Masters Thesis Collection

Nitrogen and phosphorus are the most common limiting nutrients for biological activity in freshwater ecosystems. Applying inorganic nitrogen fertilizer has increased crop productivity but caused excess nitrogen inputs to the hydrosphere. Nitrate contamination is a worldwide environmental problem. The fate of nitrogen in ecosystems is variable based on land type and hydrogeological interactions. Excess nitrogen can be retained in soils, sequestered in stream organisms, denitrified or transported downstream. The goals of this study were to monitor nitrogen concentrations in Pine Draw, Turnbull National Wildlife Refuge (TNWR), Washington, U.S.A., and to determine the source of nitrogen loading. Pine Draw is unique …

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Evaluating A Cluster Of Low-Power Arm64 Single-Board Computers With Mapreduce, Daniel Mcdermott Jan 2018

Evaluating A Cluster Of Low-Power Arm64 Single-Board Computers With Mapreduce, Daniel Mcdermott

EWU Masters Thesis Collection

With the meteoric rise of enormous data collection in science, industry, and the cloud, methods for processing massive datasets have become more crucial than ever. MapReduce is a restricted programing model for expressing parallel computations as simple serial functions, and an execution framework for distributing those computations over large datasets residing on clusters of commodity hardware. MapReduce abstracts away the challenging low-level synchronization and scalability details which parallel and distributed computing often necessitate, reducing the concept burden on programmers and scientists who require data processing at-scale. Typically, MapReduce clusters are implemented using inexpensive commodity hardware, emphasizing quantity over quality due …

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