“Held Out into the Nothingness of Being”: Heidegger and the Grim Reaper

The paper presents a reading of Being and Time that challenges the widely accepted image of Heidegger as a philosopher of conservative, moralist, and existentialist overtones. The core concept at stake is the concept of death. While almost every reader agrees that it is an ambiguous concept that should be understood as a fundamental existential disposition of Dasein, the majority of readers nevertheless reduce it to a tragic question of facing personal, individual mortality. To counter this, a radical ontological reading is attempted, one that implies, to an extent, also a reading of the Heidegger of the fundamental ontology against the Heidegger of a type of “existentialist theology”. The author consistently pursues the idea of reading the key concepts of angst, end, death, and time by analysing them as concepts that enable us to see the nothingness, the void at the core of existence. The conclusion of the paper underscores this formal ontological orientation of the book with the help of two little known concepts developed by Franz Brentano in the course of his studies of the continuum

Factors influencing non-music majors' decisions to participate in collegiate bands

Title from PDF of title page, viewed on July 2, 2013Dissertation advisor: Joseph ParisiVitaIncludes bibliographic references (pages 108-115)Thesis (Ph.D.)--Conservatory of Music and Dance and School of Education. University of Missouri--Kansas City, 2013William Revelli stated that perhaps one of the greatest weaknesses of our school band programs is that, for the majority of the students, active participation ceases upon the day of graduation from our high schools. Music educators should strive to motivate all students, regardless of degree path, toward lifelong music making. After high school, many students do not pursue music as a major yet decide to participate in a collegiate ensemble. It seems relevant to investigate the influences behind these choices. The purpose of this study was to determine what factors contributed to a non-music major's decision to participate in their collegiate band(s). An email soliciting student participation was sent to college band directors through the College Band Directors National Association (CBDNA). The 17-question electronic survey included an open-ended response, a 7-point Likert-type scale investigating factors that influenced their decision to participate in a collegiate ensemble, and demographic information. Participants (N = 2,933) were students enrolled at 95 colleges and universities from 37 states. The majority (56%) were enrolled in more than one type of band. Results from the open-ended response revealed that an overall love/enjoyment for music was the primary reason for continued music participation. Likert-type scale analysis showed a compilation of factors ultimately led to student participation. The factors with the highest mean scores, representing the strongest influences, were love/enjoyment for music, the overall high school band experience, self-pride of being a member of the college band, social aspects involved with the college band, and quality and reputation of the college band. Students enrolled in athletic bands (marching and pep bands) displayed higher motivation to continue playing from social influences whereas students enrolled in concert ensembles (concert and jazz bands) appeared to be more influenced by musical aspects. Findings from this study suggest that participants' intrinsically motivated desire to continue playing is largely due to the enjoyment started in beginning band, and continued throughout high school. Further research may investigate specific aspects related to the high school experience that promote continued music performance as well as techniques directors of all levels can utilize to encourage lifelong music making.The research problem -- Review of literature -- Methodology -- Results -- Discussion and implications -- Appendix A. Survey instrument -- Appendix B. Participant demographic information by college-university -- Appendix C. Mean and standard deviation scores by factor and demographic informatio

Preliminary Simulations of the Ullage Dynamics in Microgravity during the Jet Mixing Portion of Tank Pressure Control Experiments

The results of CFD simulations of microgravity tank pressure control experiments performed on the Space Shuttle are presented. A 13.7 liter acrylic model tank was used in these experiments. The tank was filled to an 83 percent fill fraction with Freon refrigerant to simulate cryogenic propellants stored in space. In the experiments, a single liquid jet near the bottom of the tank was used for mixing the tank. Simulations at a range of jet Weber numbers were performed. Qualitative comparisons of the liquid and gas interface dynamics observed and recorded in the experiments and those computed are shown and discussed. The simulations were able to correctly capture jet penetration of the ullage, qualitatively reproduce ullage shapes and dynamics, as well as the final equilibrium position of the ullage

The use of GERT in planning strategies for development type projects

GERT nomenclature for describing project plan or system operating polic

Numerical Investigation of LO2 and LCH4 Storage Tanks on the Lunar Surface

Currently NASA is developing technologies to enable human exploration of the lunar surface for duration of up to 210 days. While trade studies are still underway, a cryogenic ascent stage using liquid oxygen (LO2) and liquid methane (LCH4) is being considered for the Altair lunar lander. For a representative Altair cryogenic ascent stage, we present a detailed storage analysis of the LO2 and LCH4 propellant tanks on the lunar surface for durations of up to 210 days. Both the LO2 and LCH4 propellant tanks are assumed to be pressurized with gaseous helium at launch. A two-phase lumped-vapor computational fluid dynamics model has been developed to account for the presence of a noncondensable gas in the ullage. The CFD model is used to simulate the initial pressure response of the propellant tanks while they are subjected to representative heat leak rates on the lunar surface. Once a near stationary state is achieved within the liquid phase, multizone model is used to extrapolate the solution farther in time. For fixed propellant mass and tank size, the long-term pressure response for different helium mass fractions in both the LO2 and LCH4 tanks is examined

Comparing Spray Characteristics from Reynolds Averaged Navier-Stokes (RANS) National Combustion Code (NCC) Calculations Against Experimental Data for a Turbulent Reacting Flow

Developing physics-based tools to aid in reducing harmful combustion emissions, like Nitrogen Oxides (NOx), Carbon Monoxide (CO), Unburnt Hydrocarbons (UHC s), and Sulfur Dioxides (SOx), is an important goal of aeronautics research at NASA. As part of that effort, NASA Glenn Research Center is performing a detailed assessment and validation of an in-house combustion CFD code known as the National Combustion Code (NCC) for turbulent reacting flows. To assess the current capabilities of NCC for simulating turbulent reacting flows with liquid jet fuel injection, a set of Single Swirler Lean Direct Injection (LDI) experiments performed at the University of Cincinnati was chosen as an initial validation data set. This Jet-A/air combustion experiment operates at a lean equivalence ratio of 0.75 at atmospheric pressure and has a 4 percent static pressure drop across the swirler. Detailed comparisons of NCC predictions for gas temperature and gaseous emissions (CO and NOx) against this experiment are considered in a previous work. The current paper is focused on detailed comparisons of the spray characteristics (radial profiles of drop size distribution and at several radial rakes) from NCC simulations against the experimental data. Comparisons against experimental data show that the use of the correlation for primary spray break-up implemented by Raju in the NCC produces most realistic results, but this result needs to be improved. Given the single or ten step chemical kinetics models, use of a spray size correlation gives similar, acceptable result