Digital Commons Network^™

Stymieing Controversy Over Generic Top-Level Domains (Gtlds) And Other Internet Governance Decisions With Content Neutrality, Nafees Uddin

Seattle Journal for Social Justice

No abstract provided.

The Future Of Transit In West Virginia, Diana Long, Benjamin L. Blandford, Peter J. Dailey, Sinaya Dayan, Justin Matthews, Kent Sowards

Reports with Contribution from KTC Researchers

No abstract provided.

From Script To Screen To Syllabus: The Path To Curriculum Design For Undergraduate Film Production Programs, Peter J. Muir

Dissertations

Nothing has impacted western society more than media. Tibetan spiritual leader, the Dali Lama, wrote that “film and television, newspapers, books and radio together have an influence over individuals that was unimagined a hundred years ago.” The responsibility of creating these cultural artifacts, particularly within motion picture production, is a delicate balance between artistic vision and craft-oriented vocation; the contemplative mind skills of a wise citizen with the functional hand skills of a tradesperson. Undergraduate film production education provides the best avenue for development of this duality. However, within these programs, little is known regarding how curriculum is fashioned and …

Strength Assessment Of Structural Size Malaysian Timbers / Mohd Jamil Abdul Wahab, Abdul Wahab Mohd Jamil

Student Works (2010-2019)

Existing strength data of Malaysian timbers are based on mechanical tests of small clear specimen. The formal mechanical properties assessment of timber in structural sizes has not been carried out for most tropical species, including Malaysian timbers. The present study is a groundwork testing on some selected commercial timbers to develop correlation factors between structural size and small clear specimens of timber in bending. A total of 120 planks of mixed species of Malaysian hardwoods were cut into standard sizes for structural size bending test as mentioned in EN 408:2003 and small clear specimen of 50 mm by 50 mm …

Development Of Manufacturing Techniques For Ti-Based Functionally Graded Coatings / Reza Mahmoodian, Mahmoodian Reza

Student Works (2010-2019)

Coating techniques are commonly used in the ceramic-lined piping industries. However, the obtained ceramic layers are too brittle and fail under piping processes such as branching and making orifices. This is in consequence to improper manufacturing techniques, which do not guarantee functionally graded coatings or the local reinforcement of coatings. Therefore, to overcome such setbacks, the current research focuses on the development of manufacturing techniques for in-situ, locally reinforced composites with good mechanical properties. Various manufacturing techniques for the fabrication of ceramic and composite coatings have been proposed, designed, and implemented. Titanium carbide, silicon carbide, and alumina composite phases were …

Application Of Nano Base Lubricants In Machining Process For Performance Improvements / Mohd Sayuti Ab Karim, Ab Karim Mohd Sayuti

Student Works (2010-2019)

For the various manufacturing industries, particularly aerospace and automotive applications, producing high-quality metal-based products is very important. During the turning and milling operations of metal workpieces, product quality is among the criteria with the potential to be improved by using a suitable lubrication system. The capability of the CNC milling process to produce complex shapes provides noteworthy advantages owing to its wide variety of parameter setups. In practice, the effectiveness of lubrication systems should be increased to enhance product quality. However, it is feasible to improve machining quality by introducing nanoparticles to the base lubricant, which becomes a nano-based lubricant. …

Impact Of Plug In Electric Vehicle Battery Charging On A Distribution System Based On Real-Time Digital Simulator, Abdulelah Yousef Alharbi

Masters Theses and Doctoral Dissertations

This study investigates the impact of the electric vehicles (EVs’) battery charging on the distribution system in terms of maximum voltage deviation, voltage unbalance at various locations, transformers overloading, and introducing new peaks into the system. In this research, a 12.47 kV real distribution network has been modeled using real time digital simulator, using real data from a power distributor. The study presents four different scenarios of uncoordinated EVs integration for two different charging times (evening and night) and two different charging rates (level I and level II) at different penetration levels ranging from 10% to 100%. Voltage unbalance at …

A New Software Framework For Unstructured Mesh Representation And Manipulation, Craig R. Tanis

Masters Theses and Doctoral Dissertations

This research presents a unique new software framework for representing and manipulating unstructured meshes in parallel, for use in modern scientific simulation codes. Due to the central nature of the unstructured mesh, this framework provides a variety of functionality, desirable throughout the lifecycle of an application, such as IO, parallel partitioning, phantom node data updates, adaptive refinement, derefinement and load balancing. What makes the framework unique is a focus on generality: like a database, the user provides a programmatic schema defining the structure of the mesh, including topological descriptions of the valid mesh entities. The system extracts adjacency information from …

Stabilized Finite Elements For Compressible Turbulent Navier-Stokes, Jon Taylor Erwin

Masters Theses and Doctoral Dissertations

In this research a stabilized finite element approach is utilized in the development of a high-order flow solver for compressible turbulent flows. The Reynolds averaged Navier-Stokes (RANS) equations and modified Spalart-Almaras (SA) turbulence model are discretized using the streamline/upwind Petrov-Galerkin (SUPG) scheme. A fully implicit methodology is used to obtain steady state solutions or to drive unsteady problems at each time step. Order of accuracy is assessed for inviscid and viscous flows in two and three dimensions via the method of manufactured solutions. Proper treatment of curved surface geometries is of vital importance in high-order methods, especially when high aspect …

Extension Of A High-Order Petrov-Galerkin Implementation Applied To Non-Radiating And Radar Cross Section Geometries, William L. Shoemake

Masters Theses and Doctoral Dissertations

Capabilities of a high-order Petrov-Galerkin solver are expanded to include N-port systems. Tait-Bryan angles are employed to launch electro-magnetic waves in arbitrary directions allowing off axis ports to be driven. The transverse-electric (TE) formulation is added allowing waveguide geometries to be driven directly. A grid convergence study is performed on a coax-driven waveguide system. Physical data are matched to a hybrid-T junction (magic-T) electromagnetic waveguide structure to verify the TE driving formulation along with the Tait-Bryan angles and modified post-processing routines. A simple sphere case is used to exercise the radar cross section (RCS) routines and to examine the benefits …

2-D Cfd Design Of The Cross-Sectional Shape Of Arterial Stents, Kristen Karman

Masters Theses and Doctoral Dissertations

An approach for desigining arterial stents to maximize wall shear stress is presented. A cost equation to maximize wall shear stress is derived and then inverted into a minimization problem for the optimizer. A 2-D mixed-element finite-volume scheme for solving the compressible Navier-Stokes equations is implemented. A paramaterization of the cross- sectional shape of the stent wire using Hicks-Henne functions is described. The strategies used in the commercial optimization software, DAKOTA, to minimize the cost equation are described. The solver is validated using well known fluid flow test cases and is shown to match other published computed results for bloodflow …

Economic Effects Of Sox Section 404 Compliance: A Corporate Insider Perspective, Cindy Alexander, Scott Bauguess, Gennaro Bernile, Alex Lee, Jennifer Marietta-Westberg

Research Collection Lee Kong Chian School Of Business

We use survey responses from 2,901 corporate insiders to assess the costs and benefits of compliance with Section 404 of the Sarbanes-Oxley Act. The majority of respondents recognize compliance benefits, but they do not perceive these benefits to outweigh the costs, on average. This is particularly true among smaller companies where the start-up costs are proportionately larger. However, the perceived efficiency of compliance increases with auditor attestations, years of compliance experience, and after the remediation of a material weakness. Notably, the perceived effects of compliance depend largely on firm complexity, but are mostly unrelated to firm governance structure.

Offshore Wind Energy Study And Its Impact On South Carolina Transmission System, Tingting Wang

All Dissertations

As one of the renewable resources, wind energy is developing dramatically in last ten years. Offshore wind energy, with more stable speed and less environmental impact than onshore wind, will be the direction of large scale wind industry. Large scale wind farm penetration affects power system operation, planning and control. Studies concerning type III turbine based wind farm integration problems such as wind intermittency, harmonics, low voltage ride through capability have made great progress. However, there are few investigations concerning switching transient impacts of large scale type III turbine based offshore wind farm in transmission systems. This topic will gain …

Sulfonated Perfluorocyclobutyl (Pfcb) Aryl Ether Polymers: Synthesis, Reactivity, And Characterization For Polymer Electrolyte Applications, Jiyoung Park

All Dissertations

Perfluorocyclobutyl (PFCB) aryl ether copolymers are excellent candidates for proton exchange membrane (PEM) component in PEM fuel cells. Sulfonated PFCB copolymer membranes exhibit not only high chemical/thermal/mechanical stability but also high proton conductivity. In this regard, PFCB aryl ether copolymers were synthesized via thermal step-growth [2 + 2] cyclopolymerization from aryl bis-(trifluorovinyl ether) (TFVE) monomers and oligomers. Experimental and computational studies confirmed that copolymerization of relatively electron-rich and electron-poor TFVE monomers gave selective-segmented copolymers in an one-pot polymerization. After sulfonation, the PFCB copolymers comprising hydrophilic and hydrophobic segments gave membranes with high proton conductivity. Cross-linked membranes of the sulfonated PFCB …

A Characterization Of Gold Nanoparticle Uptake By Mammalian Cells, Thomas Garner

All Dissertations

Over the past decade, there has been an exponential growth in products and applications that utilize nanotechnology, as these materials present exciting opportunities for the development of new products, enhancement of existing products, and the evolution of innovative procedures. However, this recent growth has occurred in the absence of detailed knowledge concerning the interactions of nanoparticles with biological systems. Nanoparticles must usually be bioavailable in order to elicit a biological response, and to reach an active site they must usually cross a membrane. As a result, cell culture studies have proven to be beneficial and are generally one of the …

Building The Science Of Healthcare Public Reporting: Integrating Anecdotal Information To Enhance Sensemaking, Kapil Chalil Madathil

All Dissertations

Anecdotal information about a healthcare consumers' interaction with care providers and hospital facilities is becoming increasingly available to the public in the form of YouTube videos and as discussion posts on peer-support groups. This form of information can potentially jeopardize the utility of reports generated by Federal entities as it potentially diverts consumer attention from more reliable measures of quality. This dissertation investigates how a health consumer's choice of care is influenced by anecdotal information on the care process available on YouTube. This research then investigates the effect of information presentation methods such as narratives and active engagement with quality …

Climate Impacts On Zooplankton Population Dynamics In Coastal Marine Ecosystems, Harold P. Batchelder, Kendra L. Daly, Cabell S. Davis, Rubao Ji, Mark D. Ohman, William T. Peterson, Jeffrey A. Runge

Marine Science Faculty Publications

The 20-year US GLOBEC (Global Ocean Ecosystem Dynamics) program examined zooplankton populations and their predators in four coastal marine ecosystems. Program scientists learned that environmental controls on zooplankton vital rates, especially the timing and magnitude of reproduction, growth, life-cycle progression, and mortality, determine species population dynamics, seasonal and spatial distributions, and abundances. Improved knowledge of spatial-temporal abundance and distribution of individual zooplankton taxa coupled with new information linking higher trophic level predators (salmon, cod, haddock, penguins, seals) to their prey yielded mechanistic descriptions of how climate variation impacts regionally important marine resources. Coupled ecological models driven by improved regional-scale climate …

Phosphate Esters, Thiophosphate Esters And Metal Thiophosphates As Lubricant Additives, David W. Johnson, John E. Hils

Chemistry Faculty Publications

Phosphate esters, thiophosphate esters and metal thiophosphates have been used as lubricant additives for over 50 years. While their use has been extensive, a detailed knowledge of how they work has been a much more recent development. In this paper, the use of phosphate esters and thiophosphate esters as anti-wear or extreme pressure additives is reviewed with an emphasis on their mechanism of action. The review includes the use of alkyl phosphates, triaryl phosphates and metal containing thiophosphate esters. The mechanisms of these materials interacting with a range of iron and steel based bearing material are examined.

Developing Presence In Online Undergraduate Courses, Rae L. Casey

Faculty Publications - George Fox Digital

The purpose of this basic interpretive qualitative study (Merriam, 2009) was to understand the factors that excellent online faculty perceived as important to the development of presence in their online courses. Eight faculty members at two institutions in the northwest region of the United States participated in the study. Data were collected through interviews, syllabus reviews, and field notes. The data were coded and categorized, resulting in seven categories that described the findings. The seven categories were: Course Development, Course Facilitation, Assessment, Student Self Direction, Teachers as Learners, Learning Relationships, and Teacher Workload Management.

Advancing Southern Nevada’S Regional Priorities: Overview Of The 77th Session Of The Nevada Legislature, David F. Damore

Brookings Mountain West Publications

On January 10, 2013 the elected leadership of Southern Nevada met to discuss the region’s governance, K--‐12, higher education, infrastructure, economic development, and health care needs. From that bipartisan discussion emerged policy priorities for the 77^th Session of the Nevada Legislature. This report examines the degree to which the region’s elected senators and assembly members advanced these priorities and represented the interests of Southern Nevada in state government.

The Impact Of The Great Recession On Nevada’S Latino Community, John P. Tuman, David F. Damore, Maria J.F. Agreda

Brookings Mountain West Publications

The emergence of the Great Recession of 2008 had a profound impact in Nevada. The economic downturn generated high unemployment levels and led to turbulence in many sectors, particularly residential home construction and the hospitality industry. In the wake of the crisis, median home prices in Nevada plunged, while the residential foreclosure rate increased and remains one of the highest rates in the country. By 2009, it was evident that a tightening of commercial bank lending for new mortgages, combined with the impact of rising joblessness and plunging housing values, was hampering recovery efforts in the housing sector and Nevada’s …

In Perfect Xen, A Performance Study Of The Emerging Xen Scheduler, Ryan Hnarakis

Master's Theses

Fifty percent of Fortune 500 companies trust Xen, an open-source bare-metal hypervisor, to virtualize their websites and mission critical services in the cloud. Providing superior fault tolerance, scalability, and migration, virtualization allows these companies to run several isolated operating systems simultaneously on the same physical server. These isolated operating systems, called virtual machines, require a virtual traffic guard to cooperate with one another. This guard known as the Credit2 scheduler along with the newest Xen hypervisor was recently developed to supersede the older schedulers. Since wasted CPU cycles can be costly, the Credit2 prototype must undergo significant performance validation before …

Time Variation Of The Broad Hβ And Hα Emission Lines In Active Galactic Nuclei, Bryan R. Scott

Physics

High-quality Keck/LRIS long-slit spectra for a sample of 97 active galaxies selected from the Sloan Digital Sky Survey (redshift between 0.02 & 0.1; Black Hole Mass approximately 10⁷ Solar Masses) were obtained between January 2009 and March 2010 in order to study the black hole (BH) mass scaling relation in the local universe. Typically, the width of the broad Hβ emission line is used to measure the mass of the black hole (MBH). However, signs of variability in the emission line profile are seen for eight objects: While broad Hβ emission lines had previously been observed in spectra from …

Low-Cost Scheffler Solar Concentrator For The Developing World, Darren Sholes, Jason Morgan, Nicholas Fuller

Mechanical Engineering

This report will outline an approach to design, test, and build a low-cost Scheffler solar concentrator to be used for safer, sustainable and cost effective cooking in the developing world. The function of Scheffler concentrators and a proposed method to create one in an economic, environmentally conscious manner is summarized. If successful, the design will be presented in a way that is readily and freely available to anyone in the world. The authors have examined existing technology and researched the availability and cost of different materials. Analysis was performed in order to verify the feasibility of the different design ideas …

The Effects Of Football Helmet Pressure On The Shock Taken During A Controlled Impact, Sullivan Grosz

Industrial Technology and Packaging

College and NFL football teams are focusing their efforts on protecting players more than ever before. With the recent attention on concussions and the troubling long-term effects of head injuries, more research is needed to find ways to ensure players have the adequate protection. The helmets being used have a hard polycarbonate shell with four inner pads that fit tight to the player’s head. These pads are filled with air.

The purpose of the testing and project is to find an ideal air pressure that helmets need to maintain in order to protect the player to the best of its …

Using Stories To Encourage Hope And Connection In Sexual Assault Survivors, Samantha Murray

Liberal Arts and Engineering Studies

No abstract provided.

Exploring Human-Computer Interaction Through Bluetooth Low Energy Enabled Human Interface Devices, Tyler Durkin

Liberal Arts and Engineering Studies

No abstract provided.

Design And Development Of A Low-Cost Handheld Picoammeter, Malcolm Stagg

Honors Capstones

No abstract provided.

The Manufacturing Sector In The Greater Northeastern/Northern Region Of Pennsylvania, Ziona Austrian, Candi Clouse, Merissa Piazza, Nikki Glazer, Eunkyu Lee, Hyejin Jung, Eric Esoda

All Maxine Goodman Levin School of Urban Affairs Publications

This report summarizes the findings of an in-depth study of the manufacturing sector in the Greater Northeastern/Northern region of Pennsylvania. The objective of the first section is to draw attention to the role manufacturing plays in the regional economy. It compares manufacturing to other sectors of the economy in terms of employment, gross regional product, wages, productivity, and number of establishments (See Table E-1). It also briefly describes trends in the value of shipments of manufacturing goods as a proxy for exports, manufacturers’ investments in capital expenditures as a measure of capital intensity and adoption of technology, and patenting activity …

Consolidation And Suspension Of Mud From Lake Lery And Relevance To Wetland Restoration In Louisiana, Edward L. Lo

Honors Capstones

No abstract provided.