Properties of Solutions of Differential Equations on Foliations

In this paper, we discuss foliations by real curves. We investigate differential equations which are modifications of du/dx = v along leaves. Our focus is on having a solution operator so that u is continuous if v is continuous.Comment: 45 pages, 4 figure

POSTMINIMALIST CHORAL MUSIC: A PEDAGOGICAL PERSPECTIVE

After the strict processes of mid-twentieth-century minimalism, a new musical style has emerged which retains extensive use of repetition, but is generally more aurally accessible, based in non-functional triadic harmony, and flexible in its compositional structure. Frequent use of non-minimalist resources, musical resources from multiple styles in a single composition, and quotation from previous historical periods define this flexibility. American choral music has many popular compositions that exhibit characteristics of this new musical style, in part because of its accessibility relative to earlier minimalist styles, and in part because it adapts easily to the choral setting. At the same time, teaching this music to choirs requires resources that are not in standard-practice choral pedagogy textbooks or peer-reviewed choral journals. This monograph utilizes newer research in musical analysis and several recent writings attempting to generalize the postminimalist style to develop a definition of choral postminimalism. Then, this monograph also suggests analytical approaches and resources for choral warm-ups, score preparation, and other pedagogical tools for three pieces: Arvo Pärt’s The Beatitudes, Nico Muhly’s Bright Mass with Canons, and Tarik O’Regan’s The Ecstasies Above

Instruction and standards-referenced grading in a 9th grade conceptual physics classroom

In recent years, a radical method of assessing students has been gaining popularity. An increasing number of school systems in Iowa and nationwide are implementing standards-referenced grading (Stegmeir, 2014). In standards-referenced grading, grades are determined only by academic factors. This makes grades more accurate, fair, and useful for students and parents. While standards-referenced grading can offer many benefits, stakeholders can often resist making the change (Stegmeir, 2014). The goal of this project is to provide an example of exemplary physics instruction that is assessed using standards-referenced grading in a 9th grade conceptual physics classroom

Are Selective COX-2 Inhibitors as Effective as NSAIDs in Patients with Rheumatoid Arthritis?

The efficacy of COX-2 inhibitors is similar to that of nonselective NSAIDs in reducing the symptoms of rheumatoid arthritis. [Strength of Recommendation: A

Higher order turbulence closure models

Theoretical models are developed and numerical studies conducted on various types of flows including both elliptic and parabolic. The purpose of this study is to find better higher order closure models for the computations of complex flows. This report summarizes three new achievements: (1) completion of the Reynolds-stress closure by developing a new pressure-strain correlation; (2) development of a parabolic code to compute jets and wakes; and, (3) application to a flow through a 180 deg turnaround duct by adopting a boundary fitted coordinate system. In the above mentioned models near-wall models are developed for pressure-strain correlation and third-moment, and incorporated into the transport equations. This addition improved the results considerably and is recommended for future computations. A new parabolic code to solve shear flows without coordinate tranformations is developed and incorporated in this study. This code uses the structure of the finite volume method to solve the governing equations implicitly. The code was validated with the experimental results available in the literature

Olfaction Contributes to Pelagic Navigation in a Coastal Shark.

How animals navigate the constantly moving and visually uniform pelagic realm, often along straight paths between distant sites, is an enduring mystery. The mechanisms enabling pelagic navigation in cartilaginous fishes are particularly understudied. We used shoreward navigation by leopard sharks (Triakis semifasciata) as a model system to test whether olfaction contributes to pelagic navigation. Leopard sharks were captured alongshore, transported 9 km offshore, released, and acoustically tracked for approximately 4 h each until the transmitter released. Eleven sharks were rendered anosmic (nares occluded with cotton wool soaked in petroleum jelly); fifteen were sham controls. Mean swimming depth was 28.7 m. On average, tracks of control sharks ended 62.6% closer to shore, following relatively straight paths that were significantly directed over spatial scales exceeding 1600 m. In contrast, tracks of anosmic sharks ended 37.2% closer to shore, following significantly more tortuous paths that approximated correlated random walks. These results held after swimming paths were adjusted for current drift. This is the first study to demonstrate experimentally that olfaction contributes to pelagic navigation in sharks, likely mediated by chemical gradients as has been hypothesized for birds. Given the similarities between the fluid three-dimensional chemical atmosphere and ocean, further research comparing swimming and flying animals may lead to a unifying paradigm explaining their extraordinary navigational abilities