50 research outputs found

    A bibliography of planetary geology and geophysics principal investigators and their associates, 1983 - 1984

    Get PDF
    A compilation is given of selected bibliographic data specifically relating to recent publications submitted by principle investigators and their associates, supported through NASA's Office of Space Science and Applications, Solar System Exploration Division, Planetary Geology and Geophysics Program. Topics include the solar system, asteroids, volcanoes, stratigraphy, remote sensing, and planetary craters

    Investigation of discretization methods for the volume fraction equation in two-phase flows

    Get PDF
    A new high-resolution spatial discretization scheme is presented for use within the volume-ofluid (VOF) method. This scheme is an adaptation of the previously published boundary gradient maximization (BGM) scheme, with an extension for time-dependent solutions. The scheme does not explicitly reconstruct the interface, but rather resolves the values of the volume fraction in the area of the interface. The scheme is upwind biased to provide numerical stability, and the face values are limited to meet boundedness criteria and prevent variable overshoot. Unlike most other high-resolution schemes found in the literature, the proposed scheme does not use upwind-biased and downwind-biased “switching” to maintain stability. This thesis presents a number of test cases including 2-D and 3-D cases on both structured and unstructured grids. The results display the method’s ability to predict good shape of the volume fraction interface and resolve the volume fraction discontinuity

    When Ice Isn’t Slippery

    Get PDF
    This thesis is the start of what I envision to be a full-length memoir that addresses themes of perfectionism and sacrifice. I begin with an introductory chapter, then move into three chapters that highlight different elements of my life that are affected by these themes. I begin exploring childhood, passion for figure skating, perfectionism, Mormonism, and my first romantic relationship. The next chapter shows ways in which this commitment to perfectionism and sacrifice results in a severe eating disorder, and the ways in which that affects me, my family, and my relationship with figure skating. The final chapter chronologically covers an abusive marriage. This last chapter concludes with my divorce and returning to the ice, which symbolizes coming home and embracing the imperfect

    WRIT 101.22: College Writing I

    Get PDF

    Teacher in Training: On Tutoring Before Teaching

    Get PDF
    Graduate instructors often dive into teaching without extensive preparation or a teaching certificate. However, some graduate instructors tutored in university writing centers prior to their graduate work. Tutoring prior to teaching allows the graduate instructor to gain confidence with introductory coursework, cope with silence from students, and learn how to ask students questions before they ever have to step foot in a classroom. The relationship tutors have with students differs from the relationship instructors have with students, which adds a complexity for graduate instructors who are accustomed to the tutoring relationship. Although that relationship shift is difficult, this paper gives anecdotal and research evidence on how tutoring before teaching ultimately improves a graduate instructor’s teaching

    Stepped fans and facies-equivalent phyllosilicates in Coprates Catena, Mars

    Get PDF
    Stepped fan deposits and phyllosilicate mineralogies are relatively common features on Mars but have not previously been found in association with each other. Both of these features are widely accepted to be the result of aqueous processes, but the assumed role and nature of any water varies. In this study we have investigated two stepped fan deposits in Coprates Catena, Mars, which have a genetic link to light-toned material that is rich in Fe–Mg phyllosilicate phases. Although of different sizes and in separate, but adjacent, trough-like depressions, we identify similar features at these stepped fans and phyllosilicates that are indicative of similar formation conditions and processes. Our observations of the overall geomorphology, mineralogy and chronology of these features are consistent with a two stage formation process, whereby deposition in the troughs first occurs into shallow standing water or playas, forming fluvial or alluvial fans that terminate in delta deposits and interfinger with interpreted lacustrine facies, with a later period of deposition under sub-aerial conditions, forming alluvial fan deposits. We suggest that the distinctive stepped appearance of these fans is the result of aeolian erosion, and is not a primary depositional feature. This combined formation framework for stepped fans and phyllosilicates can also explain other similar features on Mars, and adds to the growing evidence of fluvial activity in the equatorial region of Mars during the Hesperian and Amazonian

    Rum Heart

    No full text

    UNSEALED: A Memoir

    No full text
    UNSEALED: A Memoir begins with a newlywed Mormon couple, Alyssa and Levi, returning home to Utah from their honeymoon. Levi takes Alyssa into an airport bathroom for sex. Alyssa is clearly upset. After they leave the bathroom, the two spontaneously meet one of twelve apostles of the global Mormon church, and Alyssa sees the collision of Levi and the apostle as an emotional collision of her marriage and faith, and it must be resolved. The memoir then moves back in time to Alyssa at age eight. As childhood builds, as does her devotion to orthodoxy. Alyssa’s intensity amplifies when she attends Brigham Young University. Anorexia strikes during Alyssa’s first semester. The weight slips off with no end in sight and after finals, Alyssa’s mother pulls her out of school and takes her home for an intervention. For two nights, a hospital IV keeps Alyssa’s heart beating, a heart that dropped to 24 bpm and almost stopped. Amid her recovery and breakup, she transfers to Utah State University and meets Levi at church. Alyssa enters the Mormon temple for the first time and the two marry in the temple. The submitted thesis ends at this point in the memoir
    corecore