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  1. Strāta, Ground Robot [Download]

    Title: Strāta, Ground Robot
    Author: Barnes, Scott
    Keywords: Mechanical engineering, Senior design, Ground robot
    Date Uploaded: 05/16/2018
  2. Vikasa, Portable Solar Generator [Download]

    Title: Vikasa, Portable Solar Generator
    Author: Patron, Aaron
    Keywords: Mechanical engineering, Senior design, Portable solar generator, Origami design
    Date Uploaded: 05/16/2018
  3. SAE Baja Front Suspension [Download]

    Title: SAE Baja Front Suspension
    Author: Bracco, Jason
    Keywords: Mechanical engineering, Senior design, Mini-Baja competition
    Date Uploaded: 05/16/2018
  4. Wood Stove Thermal Modeling [Download]

    Title: Wood Stove Thermal Modeling
    Author: Arimoto, Brent
    Keywords: Mechanical engineering, Senior design, Wood stove, Thermal modeling
    Date Uploaded: 05/16/2018
  5. Nucleolar Access Is Variable in Leukocytes Depending on Cellular Migration & Adhesion [Download]

    Title: Nucleolar Access Is Variable in Leukocytes Depending on Cellular Migration & Adhesion
    Author: Suchowiecki, Karol
    Description: The nucleolus within eukaryotic nuclei is formed from ribosomal DNA (rDNA) regions of acrocentric chromosomes 13, 14, 15, 21 and 22 in humans. In addition to ribosome biogenesis, the nucleolus has been shown to be important in mRNA splicing, DNA damage responses, and RNA metabolism. Nucleoli provide a link between transcription and translation, making them critical for protein expression. Viruses can alter nucleolar function by targeting viral proteins to this structure. HIV-1 early-expressed proteins Tat and Rev both have highly basic nucleolar localization signals (NoLS) which may cause HIV-induced alterations of mRNA splicing, cytoplasmic transport, and translation. HIV-1 effects showed differences in nucleolar availability by highly-basic NoLS-containing peptides within adherent versus migrating leukocytes. This may suggest HIV-1 Tat and Rev only localize to the nucleolus when the infected cell is adherent.
    Keywords: Research Days 2018, Microbiology, Cellular adhesion and migration, Immunology
    Date Uploaded: 04/28/2018
  6. Wrath and Woe of Heroes: Translating Male Grief in Homer’s Iliad [Download]

    Title: Wrath and Woe of Heroes: Translating Male Grief in Homer’s Iliad
    Author: Alpert, Margot E.
    Description: Homer’s Iliad has always held a fascination for me in the drama of its central heroes, particularly when it comes to Achilles. The original Greek text holds little back in its depictions of its heroes; Achilles wails as he rips off his clothes and in other moments of heroic redemption drags a body around the city. While there are obvious displays of masculinity within the Iliad, what is often overlooked is a softness and emotional intelligence with which the Ancient Greek portrays these men. My research has been not only locating and examining these moments of purposeful change, but also finding the reason for why they have come to be. In studying translations of Homer’s Iliad, I have found what appears to be a tendency to not only subvert the emotional responses of men, but to masculinize them, especially when it comes to displays of grief. This study pulls from literary theory fields of both translation studies as well as affect theory to examine how translators have interpreted Homer’s original Greek to fit their contemporary standards. My research focuses on three translations of this text: Alexander Pope’s 1715 edition, Samuel Butler’s 1898 edition, and Caroline Alexander’s 2015 edition. Pope takes on the challenge of this translation by updating the text into a metered verse in English, while Butler takes a more standard approach in keeping his translation in prose. However, I found it necessary to include Alexander’s approach, in that her translation provides us the lens of both a contemporary translator and a woman. From these three translations, I have been able to evaluate how translations of this text have changed within a 300 year period, and how these translations represent the cultures of masculinity from which they were created.
    Keywords: Research Days 2018, Homer, Gender, Masculinity
    Date Uploaded: 04/21/2018
  7. Detector Development for MUSE [Download]

    Title: Detector Development for MUSE
    Author: Hirschman, Jack
    Description: Until recently, it was thought that the proton radius was known with an uncertainty of 1%. However, experiments at the Paul Scherrer Institute (PSI) involving muonic hydrogen yielded a radius 4% smaller with an uncertainty of .1%, a 7.9σ inconsistency. This problem of properly measuring the radius now requires new and different measurements. The MUon proton Scattering Experiment (MUSE), carried-out at PSI, Switzerland, will thus be the first to utilize elastic muon proton scattering with sufficient precision to address the Proton Radius Puzzle: incompatible measurements of the radius of the proton from electron-based and muon-based measurements. This project involves the integration of Straw Tube Tracking (STT) and Silicon Photomultiplier (SiPM) detectors into MUSE. STT development takes place at Hebrew University of Jerusalem (HUJI) while SiPM development takes place at PSI. The goal of my work was to establish an adjustable gas mixing system for STT detectors, become more familiar with the SiPM detectors, test new frames for detector assembly, and help with various other projects related to SiPMs and data readout. The results of this work are presented and discussed.
    Keywords: Research Days 2018, Physics, Proton radius measurement
    Date Uploaded: 04/21/2018
  8. Uncovering Ligand-Receptors Interactions in Butterfly Wings: How WntA and Frizzled2 Work Together to Create Complex Patterns [Download]

    Title: Uncovering Ligand-Receptors Interactions in Butterfly Wings: How WntA and Frizzled2 Work Together to Create Complex Patterns
    Author: Hermina-Pérez, José Juan
    Description: Lepidoptera wings are a promising model system for the study of the genetic basis for pattern formation. Previous research on the non-traditional model organism Vanessa cardui has shown how CRISPR/CAS9 mediated mutagenesis can reveal how a single gene, i.e. WntA, is responsible for complex morphological patterning. Moreover, the WntA signaling ligand gene has been shown to have an array of different phenotypic effects across a number of butterfly species. However, no insights on the receptor gene for this signaling molecule have been formally established for the Vanessa cardui, commonly known as the Painted Lady butterfly. The scientific literature suggests that there are a variety of developmental processes that require a combination of Wnt ligands and receptors to achieve complex results. Here, we attempt to elucidate the color patterning roles of a Frizzled family receptor frizzled-2 (fz2). In this project, we produced gene knockouts of fz2 and examined the genotypic-phenotypic contrast and/or similarities to wild types, as well as WntA mutants. The use of imaging and statistical analysis of the areas of the fz2 mutant’s eyespots, chevrons, as well as other regions provide a more quantitative approach to the data. This information will be important for highlighting the major and/or subtle differences between wing patterning in WntA and fz2 mutants. The results of this study support how CRISPR/CAS9 continues to be feasible genetic editing technique in Lepidoptera. Ultimately, this project provides a further understanding of the evolutionary and developmental characteristics of butterfly wing formation.
    Keywords: Research Days 2018, Biological science, Butterfly wing development, Morphological patterning, Genetic science
    Date Uploaded: 04/21/2018
  9. Building Time Series Model for Wind Power Forecast [Download]

    Title: Building Time Series Model for Wind Power Forecast
    Author: Liu, Jiaying
    Description: With the depletion of unrenewable resources, new concepts of “sustainable development” “environment-friendly” are increasingly popular, which makes the utilization of renewable resources a global focal point. Comparing to the unrenewable resource, wind power, as an example of renewable resource, has several advantages like cost-effectiveness and free-pollution. According to World Wind Energy Association, the entire world wind power was up to 270 billion kilowatts in 2007, which shows the great potential of wind power industry. Naturally, a power prediction model is definitely necessary to better use wind power. Brown (1984) was the first one who applied forecast model in wind power industry. Since then, many mathematicians and statisticians spare no effort in promoting wind power forecast models. Many recent studies have focused on short-term forecasts of wind power and hybrid method However, the importance of time series character of wind power data is not highlighted by most of the previous researchs. We pay more attention to this character and apply time series specific model-ARIMA to forecast wind power. ARIMA (autoregressive integrated moving average model) is a generalization of ARMA (autoregressive moving average model), which is suitable for time series data either to better understand the data or to predict future points in the series (forecasting). ARIMA is usually applied in cases where data show evidence of non-stationarity, where an initial differencing step (corresponding to the "integrated" part of the model) can be applied one or more times to eliminate the non-stationarity. A data series is said to be stationary when its mean, variance, and auto-covariance are all constant, which can be tested by ADF test in R. Considering the intrinsic nonstationary character of wind power, we will apply ARIMA as our model to predict wind power. If wind power can be predicted more accurately, the usage of it will be more effective, which could greatly ease energy pressure faced by human. Our research includes six tasks, data gathering, data pre-processing, data importing and smoothing, model fitting, model examination, and model application. In this process, we build an ARIMA to forecast wind power. Then we apply this model to test whether it is useful to test out-sample data and refit the parameter to find the better model.
    Keywords: Research Days 2018, Sustainability, Statistics, Renewable resources, Wind power, Environmental research
    Date Uploaded: 04/21/2018
  10. Student Acquisition of Science Skills and Learning Objectives in an Introductory Biology Course [Download]

    Title: Student Acquisition of Science Skills and Learning Objectives in an Introductory Biology Course
    Author: Long, Madison
    Description: One of the main goals of education in biology is to not only teach students what they should know about biology, but how it came to be known; namely, through laboratory (lab) practices. It may be of interest to explore whether these students are connecting these two types of knowledge. The current study examined the responses to two prompts, “What is the purpose of this lab?” and “Name two Science Skills you utilized during this lab and tell how you used them,” given to 10 undergraduate students enrolled in an introductory biology laboratory course at The George Washington University. The results showed that around 70% of students knew the purpose of the lab. Furthermore, the two most common Science Skills used were Observing and Analyzing, and most of the responses encoded fell under the category of ‘4’ of the rubric, indicating the highest level of complexity in the response. However, the next most common response fell under the category of ‘2’, demonstrating a marked gap between students who could connect concepts learned in lecture to laboratory practices, and those who could not. More research is needed to explore the reason for this gap and how to shift it in the direction of a category ‘4.’
    Keywords: Research Days 2018, Biology, Education, Laboratory science
    Date Uploaded: 04/21/2018