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  • Human Error in Helicopter Accidents : Understanding the Manifestation of Human Error across Helicopter Missions

    Creator:
    Morowsky, Katarina A.
    Abstract:
    Human error is responsible for the majority of accidents in complex environments including helicopter operations. To reduce the overall accident rate throughout the helicopter industry, we must first understand how helicopter missions differ from one another and what errors lead to accidents. The research documented in this dissertation involved a...
    Resource Type:
    Dissertation
    Full Text:
    suited for future helicopter accident report analysis studies. The third study combined the finding

  • Shear Moduli Estimates of Thermoplastic Natural Fiber Composites via Off-Axis Tensile Tests

    Creator:
    Johnson, Natalie N.
    Abstract:
    Fiber reinforced polymers have gained considerable attention due to their wide range of applications, leading to significative concerns for end-of-life recyclability and disposal. Natural fibers and recycled carbon fibers, coupled with thermoplastic matrices can provide a sustainable and environmentally friendly alternative to traditional materials. This study focused on experimental materials...
    Resource Type:
    Masters Thesis
    Full Text:
    . Digital image correlation measurement technique was applied for special tensile off- axis ad-hoc tests

  • Human Performance with Multiple UAV Systems: Use Cases and Modeling

    Creator:
    Uriarte, Patrick A.
    Abstract:
    Commercial and public safety usage of Unmanned Aerial Vehicles in the National Airspace is currently restricted by federal regulation. The Federal Aeronautics Association is interested in modifying the restrictions; however, research is needed to study the human factor and required aptitude for a single human operating multiple UAVs. This Master’s...
    Resource Type:
    Capstone Project
    Full Text:
    aptitude for a single human operating multiple UAVs. This Master’s Project report documents my

  • Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

    Creator:
    Lewis, Kevin T.
    Abstract:
    As drop-on-demand (DOD) applications continue to gain ground in desktop inkjet-printing, 3D printing, fluid mixing, and other areas the demand for higher frequency operations are beginning to push against the current physical boundaries in DOD technology. The current research is exploring the possibility of controlling drop volume and velocity at...
    Resource Type:
    Masters Thesis
    Full Text:
    LEM model framework, special attention was given to the definition of a novel method by which one

  • Developing a should-cost model to predict display pricing in smartphones

    Creator:
    Parameshwaran Kashi, Viswanath
    Abstract:
    Companies working on new product development of smartphones seek to adopt designs and methodologies to help them stay competitive. Due to its high cost contribution to a smartphone, optimizing display cost is an important part of a smartphone's cost reduction activity. Hence, strategically sourcing displays in the development of smartphones...
    Resource Type:
    Masters Thesis
    Full Text:
    at many levels. A special note of gratitude to Dr. Toni.L.Doolen for being a part of the research

  • Designing and creating the Oregon State age and disability simulation suit

    Creator:
    Rahrer, Adam P.
    Abstract:
    Over 54 million people report having disabilities in the United States. In addition, there are 40.3 million people 65 years and older living in America. As the population continues to live longer and problems with obesity continue to increase, the number of people with limited capabilities will escalate as well....
    Resource Type:
    Masters Thesis

  • Fatigue Testing and Analysis of Polymer and Composite Materials Used in Heavy-Duty Trucks

    Creator:
    Gahan, Kevan
    Abstract:
    As structural durability analysis is increasingly trusted during the design processes of the automotive industry, more complete and sophisticated modeling of material behavior under both static and dynamic loading conditions is paramount. This is especially true regarding the application of heavy-duty trucks, where modern designs contain large parts such as...
    Resource Type:
    Masters Thesis
    Full Text:
    as a whole. His Prototype Development Lab is a special place that provides students with

  • Effects of Instructional Design and Emotional State on Performance, Mediated by Interest and Attention

    Creator:
    Suarez, Karina
    Abstract:
    This study seeks to determine the effect of instructional design and emotional state on performance, considering interest and attention as mediators. To identify this effect, a Structural Equation Model (SEM) is applied to analyze individual performance based on five variables: information representation, emotional state, pupil size, alpha power, and task...
    Resource Type:
    Masters Thesis
    Full Text:
    prediction of performance by including behavioral metrics than solely from self-report methods, which may

  • Investigating socio-technical factors in short-term continuous improvement project effectiveness

    Creator:
    Stelson, Paul Martinez
    Abstract:
    Lean manufacturing, or more generally continuous improvement (CI), has been the methodology behind significant improvements in quality, work in process inventory reductions, lead time reduction and cost reduction while conversely being associated with failed implementations and occasionally with unpopular work practices. This research focused on promoting understanding of CI methodology...
    Resource Type:
    Masters Thesis
    Full Text:
    Mechanical Engineering students. To June Worley, a special thanks for helping with the analysis of the A3

  • Study of the Effects of Chain Whip Length and Bar Length on the Characteristics of Chain Shot

    Creator:
    Shannon, Eric R.
    Abstract:
    Timber harvesters are high powered industrial grade rigs used to fell, delimb, and cut to size large trees. Hydraulic motors power sprockets that drive chains around a guide bar that get extended through logs during cuts. As technological advances allow for higher speeds a phenomenon called “chain shot” has...
    Resource Type:
    Masters Thesis
    Date Created:
    Full Text:
    255 m/s to 325 m/s which is almost double what THOR is capable (Johansson, 2004). The best chain