Thesis for Graduate Study in Tuba Performance

A document in support of the graduate tuba recital given on April 1, 2017. A description of composer biographies for each work performed as well as performance considerations and how those specific performance considerations were addressed in preparation for the recital. Submitted as part of the requirements for the Master of Music in Tuba Performance

A Performer’s Guide to Barbara York’s Four Paintings by Grant Wood

In 2012, Barbara York was commissioned by John Manning to write Four Paintings by Grant Wood for solo tuba. The work is based on four paintings by native Iowan painter, Grant Wood. The four paintings are Stone City, Iowa; Young Corn; American Gothic; and Parson Weems’ Fable. York included details from these paintings in each movement. This dissertation includes information about Barbara York, Grant Wood, the programmatic details of Four Paintings by Grant Wood, and technical considerations for the work. The performer should be better prepared to create a well-informed performance after reading this dissertation

A SPATIAL ANALYSIS OF THE FOOD WHOLESALE AND RETAIL TRADE SECTORS IN MISSISSIPPI

Agribusiness,

Turbulent Pressure Support in the Outer Parts of Galaxy Clusters

We use three-dimensional MHD simulations with anisotropic thermal conduction to study turbulence due to the magnetothermal instability (MTI) in the intracluster medium (ICM) of galaxy clusters. The MTI grows on timescales of ~1 Gyr and is capable of driving vigorous, sustained turbulence in the outer parts of galaxy clusters if the temperature gradient is maintained in spite of the rapid thermal conduction. If this is the case, turbulence due to the MTI can provide up to 5-30% of the pressure support beyond r_500 in galaxy clusters, an effect that is strongest for hot, massive clusters. The turbulence driven by the MTI is generally additive to other sources of turbulence in the ICM, such as that produced by structure formation. This new source of non-thermal pressure support reduces the observed Sunyaev-Zel'dovich (SZ) signal and X-ray pressure gradient for a given cluster mass and introduces a cluster mass and temperature gradient-dependent bias in SZ and X-ray mass estimates of clusters. This additional physics may also need to be taken into account when estimating the matter power spectrum normalization, sigma-8, through simulation templates from the observed amplitude of the SZ power spectrum.Comment: Accepted to MNRAS Letters. In Pres

How Can We Do Better? Improving Performance in Global Textile and Apparel Supply Chains

In apparel manufacturing facilities in developing countries, experts can often be observed conducting time studies on sewing specialists, with the goal of increasing productivity by decreasing cycle times. Many companies in developing countries are attempting to increase performance by concentrating on productivity improvements (Bheda, 2002; Bheda, 2003; Joint Apparel Association Forum, 2007)

Enhancing Cybersecurity Content in Undergraduate Information Systems Programs: A Way Forward

The ongoing barrage of data and infrastructure breaches is a constant reminder of the critical need to enhance the cybersecurity component of modern undergraduate information systems (IS) education. Although the most recent undergraduate information systems curricular guidelines (IS2010) highlight security in the context of data, enterprise architecture, and risk management, much more needs to be done. The IS education community needs to identify cybersecurity competencies and curricular content that further integrates cybersecurity principles and practices into IS curricular guidelines. Until this is completed at the IS community level, IS programs will need to fulfill this role individually. This paper contributes to both these efforts by reviewing relevant literature and initiatives – highlighting two primary paths of curricular development: (1) the evolution of IS curricular guidelines, and (2) the development of Cybersecurity as a standalone discipline. Using these resources, the paper summarizes best practices for integrating cybersecurity into curricula and explores the integration of IS into cybersecurity programs

The relation between gas density and velocity power spectra in galaxy clusters: qualitative treatment and cosmological simulations

We address the problem of evaluating the power spectrum of the velocity field of the ICM using only information on the plasma density fluctuations, which can be measured today by Chandra and XMM-Newton observatories. We argue that for relaxed clusters there is a linear relation between the rms density and velocity fluctuations across a range of scales, from the largest ones, where motions are dominated by buoyancy, down to small, turbulent scales: $(\delta\rho_k/\rho)^2 = \eta_1^2 (V_{1,k}/c_s)^2$, where $\delta\rho_k/\rho$ is the spectral amplitude of the density perturbations at wave number $k$, $V_{1,k}^2=V_k^2/3$ is the mean square component of the velocity field, $c_s$ is the sound speed, and $\eta_1$ is a dimensionless constant of order unity. Using cosmological simulations of relaxed galaxy clusters, we calibrate this relation and find $\eta_1\approx 1 \pm 0.3$. We argue that this value is set at large scales by buoyancy physics, while at small scales the density and velocity power spectra are proportional because the former are a passive scalar advected by the latter. This opens an interesting possibility to use gas density power spectra as a proxy for the velocity power spectra in relaxed clusters, across a wide range of scales.Comment: 6 pages, 3 figures, submitted to ApJ Letter

Effects of Feeding Calcium Salts of Conjugated Linoleic Acid (CLA) to Finishing Steers

Thirty crossbred steers were randomly assigned to three treatment groups and fed corn-based finishing diets (88% concentrate) containing 0, 1.0 or 2.5% conjugated linoleic acid (CLA) for an average of 130 days. Steers fed 2.5% CLA consumed less feed and had lower daily gains than control steers. Carcass weights tended to be reduced, and marbling scores were decreased by feeding 2.5% CLA. There were no significant effects of feeding CLA on dressing percentages, yield grades and backfat measurements. The rounds from each animal were physically separated into tissue components. Rounds from steers fed CLA contained a higher percentage of lean tissue and a lower percentage of fat. Feeding CLA increased concentrations of CLA in lipids from fat and lean in rib steaks and rounds. Increasing CLA in beef had no effects on shelf life, tenderness, juiciness, flavor or flavor intensity of rib steaks. Although results indicated that feeding calcium salts of CLA to beef steers decreased performance, concentrations of CLA in tissues could be increased offering the availability of a leaner, more healthful meat product

The impact of indirect distribution strategies on supply chain operations

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.Includes bibliographical references (p. 59-62).by Mark A. Parrish.M.S