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  • The Economic Path Dependency of Foreign Extraction Duration: Why Colonialism Still Matters

    Creator:
    Kemp, Duncan S.
    Abstract:
    Foreign occupation and extraction have arguably existed since the very emergence of interstate conflict millennia ago. Yet despite humanity’s vast experience on the topic, we know surprisingly little about its long-term economic consequences. It is generally accepted by most that the extraction of resources by a foreign power tends to...
    Resource Type:
    Research Paper
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    non-extractive institutions (Acemoglu, Johnson, and Robinson 2001). The idea behind this is that in

  • Optical Modelling of Thin Films: Applying Effective Medium Theory to Mixtures of TiO₂ and SnO₂

    Creator:
    Wulf, Julian J.
    Abstract:
    This study used SCOUT optical modelling software to create models of the reflectance and transmittance spectra generated by mixtures of titanium dioxide (TiO2) and tin oxide (SnO2). These models enabled identification of how altering the ratio of a mixture changes the optical response. By being able to identify how altering...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    light wavelengths that we use in the lab as well as being well known. The effects of the SiO2

  • Housing Chickens: How Much Space is Enough?

    Creator:
    Bradley, Emily D.
    Abstract:
    The stocking density for chickens can have major impacts on their health and welfare. There is no single correct answer for how many chickens you can house in a specified area, as it depends on the quality of housing. Chickens can tolerate a higher stocking density without major health concerns...
    Resource Type:
    Research Paper
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    commercial farms in the United Kingdom and Denmark stocked at five densities. Poult Sci. 84:8, 1155-1165

  • The Gender Wage Gap and Education

    Creator:
    Nordin, Bri
    Abstract:
    Does the wage gap exist in careers that require higher levels of educational attainment? Research indicates that, on average, women make around 80% of what men earn. This study aims to investigate the relationship between educational attainment and the magnitude of the wage gap. Due to the differences in gender...
    Resource Type:
    Research Paper
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    Nordin PS300 The Gender Wage Gap and Education Abstract Does the wage gap exist in careers that

  • A Study of Charging Behaviors in Organic Semiconductors using Optical Trapping

    Creator:
    Founds, Graham M.
    Abstract:
    We measure the charging and discharging of two organic materials, PCBM and ADT-TES-F. These materials are studied through the noncontact method of particle trapping known as Optical Tweezers, where an IR laser is used to constrain the motion of a coated or noncoated silica sphere while its positional data is...
    Resource Type:
    Undergraduate Thesis
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    showed that the surface charge of a colloidal particle suspended in a non-polar environment could be

  • Exploring the Optical and Electronic Properties of Xylindein, a Fungus-Derived Pigment, as a Sustainable Organic Semiconductor

    Creator:
    Quinn, Alexander
    Abstract:
    Xylindein is an organic pigment derived from Chlorociboria aeruginascens and C. aeruginosa fungi that has shown promise as an organic semiconductor. Preliminary estimates of charge carrier mobilities (CCMs) on the order of 0.1 cm2/Vs were calculated from early tests on xylindein thin films, and photocurrents were also observed under laser...
    Resource Type:
    Undergraduate Thesis
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    some strong mechanism for non-radiative decay in both dissoved and bulk xylindein. Xylindein shows

  • Predicting the Percentage: Relating the Refractive Index to Effective Medium Theory in Combination Dielectric Films

    Creator:
    Farmer, Skylar
    Abstract:
    Transparent conductive oxides (TCO) are at the forefront of technology with their uses in touch screen phones and televisions, solar cells and more. Titanium dioxide and tin dioxide are two TCOs that have been studied in depth on their own, so to further explore these TCOs, this project focuses on...
    Resource Type:
    Undergraduate Thesis
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    amount of tin dioxide and titanium dioxide vary in the film. To determine the refractive index, we use

  • Environmental Justice Inventory – Linn-Benton County, Oregon

    Creator:
    Patchell, Roman, Judokusumo, Madeline, Cortes, Mariana, and Fisher, Halle
    Abstract:
    The purpose of this inventory is to detail the state of environmental justice in the Mid- Willamette Valley in an up-to-date, centralized format. The inventory is based on information from various government sources, and a survey to gather first-person perspective to take a pulse of the wellbeing of our community....
    Resource Type:
    Research Paper
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    students and 37.6% of LBCC students are non-white and/or multi-ethnic, which stands out in sharp contrast

  • Characterizing Optical Signatures of TiO₂ Amorphous Precursors

    Creator:
    Berry, Patrick
    Abstract:
    TiO₂ typically crystallizes into three polymorphs: brookite, rutile, and anatase. The phase selection problem in TiO₂ is the lack of understanding what conditions cause amorphous TiO₂ to crystallize into one of its three polymorphs during an annealing process. It has been recently shown that phase selection in TiO₂ is highly...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    . Its applications are numerous and include use as a color pigment, an ingredient in sunscreen, as

  • Beating Modes in Protostellar Disks

    Creator:
    Varga, Attila V.
    Abstract:
    Computational simulations of disks are becoming an important tool to predict the the evolution of protostars and disks to better understand the formation of planets. Past research has shown that the evolution of disks and their protostar can be altered through the interaction between gravity and hydrodynamic instabilities. We perform...
    Resource Type:
    Undergraduate Thesis
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    zero first. This is where the perturbed density goes to zero. In non linear computation where the disk