Thesis--Princeton. / Photocopy of typescript. Ann Arbor, Mich. : University Microfilms International, 1980. -- 21 cm. Includes bibliographical references (leaves 327-340).

Th. Etat--Musicologie--Paris-4, 1997. / Catalogue des variations de R. Schumann p. 463-701. Glossaire p. 796-809. Bibliogr. p. 811-844. Index.

Dynamic spectra processed from data recorded on magnetic tape at the mid-latitude Ralston station (Alberta) in 1967 have been studied in detail. The Pc3,4 pulsations appear to behave in a much more complicated manner than reported by other observers at low-latitude stations. The variation of the Pc3,4 frequency at Ralston assumes different forms from one day to another, the pattern depending largely upon the general level of magnetic disturbance represented by the K(p)-index. It appears, however, that most of the Pc3,4 spectra analysed may be classified into one of, or a combination of, four well-defined diurnal patterns under steady magnetospheric conditions. An interpretation is offered to explain the existence as well as the fine structure of these four diurnal patterns. The crux of the present interpretation is that Ralston, under moderate magnetospheric agitation, may pick up micropulsation activities originating from the plasmasphere and/or the plasmatrough depending upon its position relative to the plasmapause. Eigen oscillations of modified Alfven mode (poloidal oscillation) in these two magnetospheric regions are considered to be the prime sources of the ground observed Pc3,4 magnetic pulsations. Such suggestion is reinforced by observations made simultaneously at other mid- and high-latitude stations. Other morphological properties of Pc3 and Pc4 are discussed in the light of the new interpretation. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

L’objectif de cette thèse est d’étendre une méthode d’estimation des paramètres d’une loi stable dans Rd aux lois à queue régulière dans un cône arbitraire. La méthode d’échantillonnage par paquets est modifiée afin d’optimiser la vitesse de convergence des estimateurs. Un nouvel estimateur de la masse totale de mesure spectrale est proposé. Des résultats sur les statistiques d’ordre des lois à queue régulière dans un cône et la loi des grands nombres pour le schéma triangulaire sont établis. La consistance et la normalité asymptotique des estimateurs sont démontrées. La performance des estimateurs est étudiée par simulation. On compare ces estimateurs avec quelques estimateurs connus. Les tableaux de performance sont fournis. La méthode de noyau est utilisée pour estimer la densité d’une mesure spectrale absolument continue d’une loi à queue régulière. On prouve la consistance de l’estimateur dans notre cas particulier. Pour augmenter le nombre de points utilisés dans l’échantillon, on propose une méthode d’estimation utilisant les permutations aléatoires de l’échantillon. La variation régulière a la propriété d’être préservée par plusieurs opérations et transformations. On considère trois sortes de transformations. Des conditions suffisantes pour cette préservation sont proposées et quelques contre-exemples sont présentés. Les modèles de lois stables et de lois à queue lourde sont très utilisés dans plusieurs domaines d’application. On considère deux jeux de données réelles : les cours des 30 valeurs de l’indice DJIA et les perturbations planétaires des comètes du nuage de Oort. En appliquant la méthode d’estimation présentée on obtient des descriptions statistiques de ces données. / The objective of this thesis is to extend an estimation method of parameters of a stable distribution in Rd to the regularly varying tail distributions in an arbitrary cone. The sampling method of regrouping is modified to optimize the rate of convergence of estimators. A new estimator of total mass of the spectral measure is proposed. Some results about order statistics of regularly varying tail laws in a cone and the strong law of large numbers on the triangular schema are established. The consistency and the asymptotic normality of estimators are proved. The performance of proposed estimators is studied by simulation. We compare these estimators with some known estimators. The performance tables are provided. The kernel density estimation is used to estimate the density of an absolutely continuous spectral measure of a regularly varying tail law. We prove the consistency of the estimator in our particular case. To increase the number of points used in the sample, an estimation method using the random permutations of sample is proposed. The property of regular variation can be preserved by several operations and transformations. We consider three kinds of transformations. The sufficient conditions for this preservation are proposed and some counter-examples are presented. The models of stable distributions and heavy tailed distributions are widely used in several application areas. We consider two sets of real data : the prices of 30 stocks of the DJIA index and the planetary perturbations of comets of the Oort cloud. By applying the estimation method presented previously we obtain some statistical descriptions of these data.

A set of variations can be any length and contain any number of variations. The same set of variations also can be fashioned to resemble any musical form. On this basic premise, Theme and Variations for Wind Ensemble was written. It is a continuous one movement composition. There is a statement of a theme with five subsequent variations.

The Variations on a Theme by Shostakovich is scored for an orchestra of 3 flutes, 3 oboes, 2 bassoons, contra-bassoon, 4 horns, 3 C trumpets, 3 trombones, harp, harpischord, piano, percussion and strings. The entire work is approximately 17 minutes in duration. The subject for the Variations comes from the Fifteenth Symphony of Shostakovich, last movement. There are many allusions to the writing of Shostakovich in terms of gesture, orchestration, and harmonic structure.

No description available.

No description available.

Note: Score

Wet-pavement friction is one of the most important pavement characteristics in relation to highway safety. This property is difficult to measure because it is affected by many vehicle, driver, pavement, and environmental parameters. In particular, it has been observed that both short- and long-term seasonal variations impact wet-pavement friction. Temperature, rainfall, and contaminants accumulated on the pavement surface affect the friction measurements. The objective of this thesis was to quantify the effect of seasonal variations on pavement surface friction measurements on hot-mix asphalt surfaces. Monthly measurements of friction and texture were collected on nine hot-mix asphalt sections at the Virginia Smart Road for a year and a half. Friction was measured using two locked-wheel trailers and a Dynamic Friction Tester. Measurements with the two types of equipment were conducted in the same day. Macrotexture measurements were taken using a Circular Texture Meter on the same locations used for the DFTester measurements. In order to compare friction measurements on the different surfaces, the monthly friction values were normalized by dividing the value obtained each month by the August 2007 measurements, which were theoretically the lowest friction numbers. The resulting ratios were considered friction correction factors to bring the friction measurements to the lowest value. After studying the friction variation throughout the year, sinusoidal models were fitted to the data to predict monthly correction factors for measurements at different speeds using both devices. The main conclusion of this investigation is that seasonal variation has a significant effect on pavement friction measurements. The general trend observed is that the measurements are higher in the winter months than in the summer months. This tendency follows a cyclical sinusoidal pattern throughout the year, similar to the air temperature variations. This suggested that temperature was at least one of the factors that affected the fiction correction factors. Better coefficients of determination were obtained for the DFTester models than for those for the locked-wheel devices. However, the sinusoidal model determined for the locked-wheel device at 64 kph (40 mph), which is the standard test velocity, fit relatively well the measured friction correction factors. Average friction correction factors for the Commonwealth of Virginia were proposed using these models. The study also showed that the friction correction factors are speed-dependent and are affected by the macrotexture of the pavement surface. The maximum (winter) friction correction factors were found to decrease with increased macrotexture for both devices at all speeds. The effect is more pronounced, however, for the locked-wheel measurements than for the DFTester measurements. / Master of Science