Debussy's string quartet in the Brussels salon of "La Libre Esthetique"

The second performance of Debussy's String Quartet, given by the Ysaye Quartet on an all-Debussy program during the 1894 salon of "La Libre Esthétique" in Brussels, offers an ideal context for a critical reexamination of his musical and aesthetic affinities at this pivotal moment. In the first place, a view to the salon's other three concerts, which honored Beethoven alongside recent works by Societe Nationale composers, encourages reconsideration of Debussy's own response to the "great tradition" in the work he ironically designated "Opus 10." But at the same time, due regard to his other contemporaneous compositional obsessions, as exemplified in the works programmed alongside the Quartet, raises the question as to how such self-conscious dialogue with Classical models related to more pressing, post-Wagnerian musical negotiations. Pursuit of this question through analysis of the first movement's reconfigured sonata form ultimately suggests ways to distinguish, from amid the myriad post-Impressionist artists on view in the "Free Aesthetic" salon itself, those painters whose visual explorations most tellingly paralleled Debussy's own "games" with musical syntax and expression in the early 1890s

Measurement of Synchrotron x-ray energies and line shapes using diffraction markers

Standard reference markers for accurate, reproducible synchrotron x-ray energies are obtained using a three Si crystal spectrometer. The first two crystals are in the monochromator and the third is used to obtain diffraction markers which monitor the energy. Then for any value of the glancing angle on the reference Si crystal the energy for the (333) diffraction must occur at 3/4 that of the (444) and 3/5 of that for the (555). This establishes for the first time an absolute synchrotron energy scale. Higher-order diffractions are used to determine excitation line profiles. We conclude that the use of reference diffractions is necessary to measure reproducible x-ray energies and to analyze the incident photons\u27 line profile. The detection of diffractions near the edge of measurement and near the Cu edge will provide a fast secondary standard which will allow comparison of edge data between different laboratories. The diffraction profiles will allow the proper analysis of spectral line widths

Measurement of Student Perceptions and Attitudes in Mathematics

As in other subjects, student perceptions of and attitudes towards mathematics play a role in their motivation and approaches to learning. This is of special concern in mathematics as so many students take terminal math courses at the post-secondary level as part of other programs. Ultimately, we are interested in how these attitudes influence further math course choices and student performance in the courses they do take, as well as instructional choices that can promote more expert-like attitudes.This academic year, our research group adapted an existing survey for Physics (the CLASS developed at U. Colorado), a measure of student orientation towards expert attitudes about the subject, which including perceptions of math as a field and (self-perceived) dispositions in math problem solving. We surveyed UBC students at the beginning and end of a range of early Math courses (primarily first-year calculus courses), as well as a variety of experts in our department (faculty, graduate students and post-docs). This has allowed us to assess student attitudes and perceptions, and to track how they shift over time, relative to an expert response. Similar adaptations of this survey exist for other science disciplines (see http://www.colorado.edu/sei/class/).In this presentation, I will discuss some existing tools in math and other disciplines for assessing student attitudes, review the development process we are following, and show highlights from our preliminary results

The Influence of Psycholinguistic Variables on Articulatory Errors in Naming in Progressive Motor Speech Degeneration

We describe an analysis of speech errors on a naming task in a man with progressive speech degeneration. Early assessment indicated naming impairments with no significant phonological or semantic impairment. To examine naming and the factors that influence speech errors, we selected 210 words varying in lexical and phonetic variables and conducted logistic regression analysis on speech error types. No significant naming errors were found. The only significant predictor of articulation errors was phonemic length and the only error type predicted was phone omissions. Results suggest that the sound omissions in naming are caused by motor speech impairment unrelated to lexical factors

Stamina of a non-gasketed flange joint under combined internal pressure and axial loading

The performance of a bolted flange joint is characterized mainly by its 'strength' and 'sealing capability'. A number of numerical and experimental studies have been conducted to study these characteristics under internal pressure loading conditions alone. However, limited work is found in the literature under conditions of combined internal pressure and axial loading. The effect of external, axial loading pressure being unknown, the optimal performance of the bolted flange joint cannot be achieved. Current design codes do not address the effects of axial loading on structural integrity and sealing ability. To study joint strength and sealing capability under combined loading conditions, an extensive experimental and numerical study of a non-gasketed flange joint was carried out. Actual joint load capacity was determined at both design and test stages with the maximum external axial loading that can be applied for safe joint performance. Experimental and numerical results have been compared and overall joint performance and behaviour is discussed in detail

The Spectral Signature of Dust Scattering and Polarization in the Near IR to Far UV. I. Optical Depth and Geometry Effects

Spectropolarimetry from the near IR to the far UV of light scattered by dust provides a valuable diagnostic of the dust composition, grain size distribution and spatial distribution. To facilitate the use of this diagnostic, we present detailed calculations of the intensity and polarization spectral signature of light scattered by optically thin and optically thick dust in various geometries. The polarized light radiative transfer calculations are carried out using the adding-doubling method for a plane-parallel slab, and are extended to an optically thick sphere by integrating over its surface. The calculations are for the Mathis, Rumple & Nordsieck Galactic dust model, and cover the range from 1 $\mu m$ to 500 \AA. We find that the wavelength dependence of the scattered light intensity provides a sensitive probe of the optical depth of the scattering medium, while the polarization wavelength dependence provides a probe of the grain scattering properties, which is practically independent of optical depth. We provide a detailed set of predictions, including polarization maps, which can be used to probe the properties of dust through imaging spectropolarimetry in the near IR to far UV of various Galactic and extragalactic objects. In a following paper we use the codes developed here to provide predictions for the dependence of the intensity and polarization on grain size distribution and composition.Comment: 29 pages + 21 figures, accepted for the Astrophysical Journal Supplement February 2000 issue. Some revision, mostly in the introduction and the conclusions, and a couple of correction

Discipline-based educational development: examples from four Canadian universities

Discipline-based educational development , integrating the principles of teaching and learning with specific content knowledge of a discipline, is emerging as a complement to more traditional, centralized models of teaching support, bringing with it its own advantages and challenges. Partly, it is a question of belonging: it helps to be part of a team of people - possibly with a variety of specialties in areas like curriculum, pedagogy, educational technology - and operating from a centre offers this important support, but coming from a single unit across campus may make it harder to connect with those teaching in departments. Conversely, working in a department creates many opportunities to connect with faculty and students, but can be isolating as there is unlikely to be a team of any size at the department level doing similar work. This panel discussion will explore four examples of discipline-based educational development at Canadian universities, highlighting successful initiatives and challenges faced by educators in implementing this approach. In one case, teaching is transforming via graduate student projects within specific courses, and the others have variations on teaching centre models with different levels of connections to departments - in one case with staff members embedded in departments. We will also be interested to learn of other models from those who attend the discussion. Overall, this panel discussion aims to raise awareness of the value of discipline-based education development in STEM education and to provide a platform for dialogue and collaboration among educators and educational developers in Canadian post-secondary institutions