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- Genre: Academic theses
- Creators: Papandreou-Suppappola, Antonia
- Creators: Ryan, Russell
- Member of: Theses and Dissertations
Description
The propagation of waves in solids, especially when characterized by dispersion, remains a topic of profound interest in the field of signal processing. Dispersion represents a phenomenon where wave speed becomes a function of frequency and results in multiple oscillatory modes. Such signals find application in structural healthmonitoring for identifying potential damage sensitive features in complex materials.
Consequently, it becomes important to find matched time-frequency representations
for characterizing the properties of the multiple frequency-dependent modes of propagation in dispersive material. Various time-frequency representations have been
used for dispersive signal analysis. However, some of them suffered from poor timefrequency localization or were designed to match only specific dispersion modes with
known characteristics, or could not reconstruct individual dispersive modes. This
thesis proposes a new time-frequency representation, the nonlinear synchrosqueezing
transform (NSST) that is designed to offer high localization to signals with nonlinear time-frequency group delay signatures. The NSST follows the technique used
by reassignment and synchrosqueezing methods to reassign time-frequency points of
the short-time Fourier transform and wavelet transform to specific localized regions
in the time-frequency plane. As the NSST is designed to match signals with third
order polynomial phase functions in the frequency domain, we derive matched group
delay estimators for the time-frequency point reassignment. This leads to a highly localized representation for nonlinear time-frequency characteristics that also allow for
the reconstruction of individual dispersive modes from multicomponent signals. For
the reconstruction process, we propose a novel unsupervised learning approach that
does not require prior information on the variation or number of modes in the signal.
We also propose a Bayesian group delay mode merging approach for reconstructing
modes that overlap in time and frequency. In addition to using simulated signals, we demonstrate the performance of the new NSST, together with mode extraction, using
real experimental data of ultrasonic guided waves propagating through a composite
plate.
ContributorsIkram, Javaid (Author) / Papandreou-Suppappola, Antonia (Thesis advisor) / Chattopadhyay, Aditi (Thesis advisor) / Bertoni, Mariana (Committee member) / Sinha, Kanu (Committee member) / Arizona State University (Publisher)
Created2023
Description
This dissertation centers on the development of Bayesian methods for learning differ- ent types of variation in switching nonlinear gene regulatory networks (GRNs). A new nonlinear and dynamic multivariate GRN model is introduced to account for different sources of variability in GRNs. The new model is aimed at more precisely capturing the complexity of GRN interactions through the introduction of time-varying kinetic order parameters, while allowing for variability in multiple model parameters. This model is used as the drift function in the development of several stochastic GRN mod- els based on Langevin dynamics. Six models are introduced which capture intrinsic and extrinsic noise in GRNs, thereby providing a full characterization of a stochastic regulatory system. A Bayesian hierarchical approach is developed for learning the Langevin model which best describes the noise dynamics at each time step. The trajectory of the state, which are the gene expression values, as well as the indicator corresponding to the correct noise model are estimated via sequential Monte Carlo (SMC) with a high degree of accuracy. To address the problem of time-varying regulatory interactions, a Bayesian hierarchical model is introduced for learning variation in switching GRN architectures with unknown measurement noise covariance. The trajectory of the state and the indicator corresponding to the network configuration at each time point are estimated using SMC. This work is extended to a fully Bayesian hierarchical model to account for uncertainty in the process noise covariance associated with each network architecture. An SMC algorithm with local Gibbs sampling is developed to estimate the trajectory of the state and the indicator correspond- ing to the network configuration at each time point with a high degree of accuracy. The results demonstrate the efficacy of Bayesian methods for learning information in switching nonlinear GRNs.
ContributorsVélez-Cruz, Nayely (Author) / Papandreou-Suppappola, Antonia (Thesis advisor) / Moraffah, Bahman (Committee member) / Tepedelenlioğlu, Cihan (Committee member) / Berisha, Visar (Committee member) / Arizona State University (Publisher)
Created2023
Description
The concert vocalise, a dazzling wordless vocal etude intended for performance, is largely a phenomenon of the twentieth century. Made famous by composers such as Sergei Rachmaninoff and Maurice Ravel, the concert vocalise is generally a short, non-programmatic work with a relatively simple form. In contrast, Nikolai Medtner’s two monumental Op. 41 vocalises, the Sonata-Vocalise mit einem Motto “Geweihter Platz and the Suite Vocalise, are staggering in their length and formal complexity. They are also programmatically conceived, sharing the Goethe poem “Geweihter Platz” as their inspiration.
The innovation of adding a textual element to a traditionally textless genre introduces a tantalizing new layer of complexity that demands further research and exploration. However, as with any innovation, it also offers new challenges to performers wishing to program either or both works. Current scholarship has yet to offer any kind of in-depth analysis of either work, leaving questions as to the structural and motivic elements which bind these large works together, not to mention questions related to exactly how Medtner addresses the challenge of linking specific parts of Goethe’s text to the textless portions of music. Furthermore, neither work is considered standard repertoire, and recordings and performances are limited, leaving aspiring performers in something of an informational desert.
In this paper, I endeavor to fill this informational gap for performers and scholars alike by providing them with a brief biography of Medtner, an outline of the development of the concert vocalise genre, and the background of the Goethe poem that inspired Medtner. Then my in-depth analyses reveal underlying structural, motivic, and programmatic links both within and between the works. Finally, my performer’s guide, based on the analyses and my experience performing both works, offers suggestions regarding the interpretational, ensemble, and technical challenges presented by these great works.
The innovation of adding a textual element to a traditionally textless genre introduces a tantalizing new layer of complexity that demands further research and exploration. However, as with any innovation, it also offers new challenges to performers wishing to program either or both works. Current scholarship has yet to offer any kind of in-depth analysis of either work, leaving questions as to the structural and motivic elements which bind these large works together, not to mention questions related to exactly how Medtner addresses the challenge of linking specific parts of Goethe’s text to the textless portions of music. Furthermore, neither work is considered standard repertoire, and recordings and performances are limited, leaving aspiring performers in something of an informational desert.
In this paper, I endeavor to fill this informational gap for performers and scholars alike by providing them with a brief biography of Medtner, an outline of the development of the concert vocalise genre, and the background of the Goethe poem that inspired Medtner. Then my in-depth analyses reveal underlying structural, motivic, and programmatic links both within and between the works. Finally, my performer’s guide, based on the analyses and my experience performing both works, offers suggestions regarding the interpretational, ensemble, and technical challenges presented by these great works.
ContributorsUhl, Nathan Leonard (Author) / Campbell, Andrew (Thesis advisor) / Carpenter, Ellon (Thesis advisor) / FitzPatrick, Carole (Committee member) / Ryan, Russell (Committee member) / Arizona State University (Publisher)
Created2017
Description
The pipe organ, a musical instrument historically, culturally, and conceptually associated with Christian worship, is being negatively affected in terms of condition and continued use in the United States by rising rates of secularity, declining mainline Protestant and Catholic adherents, declining worship attendance, and, most directly, the closure of church buildings. No scholarly research addresses the relationship of secularization and the organ, and no professionals in the field acknowledge its seriousness or have presented plans to counter it.
This paper lays the groundwork for future research while exploring the landscape of the organ’s possible secular uses. The organ’s relationship to secularization is defined through the interdisciplinary lens of secular studies, bolstered through an exploration of its past. This thesis analyzes the use of the organ in secularized churches in the United States through case studies of fourteen organs in thirteen former churches. While these examples reveal some promising adaptive reuses of church buildings and their organs, the prevailing conclusion is that the instrument’s future is severely endangered. There are few paid secular positions and insignificant educational opportunities that stem from secularized churches. The public lacks exposure to the instrument because of the infrequency of organ-related events.
Yet because the organ’s principal aesthetic is not Christian but communal, the instrument has the potential to thrive in secular contexts. This reframing and often literal repositioning requires stronger leadership: organizations and individuals promoting the organ must be proactive in working with the new owners of secularized churches to help them incorporate the instrument in new, revitalized contexts. A dynamic future for the organ requires the creative work of many.
This paper lays the groundwork for future research while exploring the landscape of the organ’s possible secular uses. The organ’s relationship to secularization is defined through the interdisciplinary lens of secular studies, bolstered through an exploration of its past. This thesis analyzes the use of the organ in secularized churches in the United States through case studies of fourteen organs in thirteen former churches. While these examples reveal some promising adaptive reuses of church buildings and their organs, the prevailing conclusion is that the instrument’s future is severely endangered. There are few paid secular positions and insignificant educational opportunities that stem from secularized churches. The public lacks exposure to the instrument because of the infrequency of organ-related events.
Yet because the organ’s principal aesthetic is not Christian but communal, the instrument has the potential to thrive in secular contexts. This reframing and often literal repositioning requires stronger leadership: organizations and individuals promoting the organ must be proactive in working with the new owners of secularized churches to help them incorporate the instrument in new, revitalized contexts. A dynamic future for the organ requires the creative work of many.
ContributorsMeszler, Alexander Francis (Author) / Marshall, Kimberly (Thesis advisor) / Ryan, Russell (Committee member) / Schmelz, Peter (Committee member) / Arizona State University (Publisher)
Created2020
Description
Lu Pei (b. 1956) is a celebrated Chinese American composer who currently serves as a composition professor at the Shanghai Conservatory of Music. His work is known for its varied use of Chinese folk tunes. He lived in the United States a long time, which cultivated within him abundant Western musical influences. The sound of multi-ethnic elements is greatly reflected in his own music. Writing an opera has always been his ultimate dream as a composer, and after many years of work, the opera The Third of March was completed and premiered in 2018 in Guangxi. It has received wide acclaim and has been a favorite of younger listeners. Lu Pei aims to bring young people to modern music and the Chinese opera, not only using traditional Chinese musical elements, but also adopts “reinvented” modern Western musical styles, giving a new identity to the Chinese opera is the main foci of The Third of March.
To prepare for my performer’s guide to The Third of March, I will discuss Lu Pei’s inspirations from the Guangxi Song Fairs, and the music and culture of the Zhuang people surrounding the date in the Chinese lunar calendar, March Third. For Westerners unfamiliar with Lu Pei’s music, I will briefly introduce the compositional blending of Western and Chinese musical styles with a section about Chinese composers active in the United States, Chen Yi (b. 1953), and Tan Dun (b. 1957). I will also include a brief outline of the history of Chinese opera development, and Lu Pei’s compositional concepts and the background of the opera The Third of March will be discussed.
My performer’s guide, the primary focus of this project, will begin by stressing Lu Pei’s adoption of different Chinese folk songs and Western compositional elements. These techniques clearly gave the piece a unique stylistic identity. I will give a brief overview of the Chinese language diction in International Phonetic Alphabet. Finally, the qualities of the main arias in the opera, and some of the Chinese operatic techniques for singers, and their special effects, will be explored.
To prepare for my performer’s guide to The Third of March, I will discuss Lu Pei’s inspirations from the Guangxi Song Fairs, and the music and culture of the Zhuang people surrounding the date in the Chinese lunar calendar, March Third. For Westerners unfamiliar with Lu Pei’s music, I will briefly introduce the compositional blending of Western and Chinese musical styles with a section about Chinese composers active in the United States, Chen Yi (b. 1953), and Tan Dun (b. 1957). I will also include a brief outline of the history of Chinese opera development, and Lu Pei’s compositional concepts and the background of the opera The Third of March will be discussed.
My performer’s guide, the primary focus of this project, will begin by stressing Lu Pei’s adoption of different Chinese folk songs and Western compositional elements. These techniques clearly gave the piece a unique stylistic identity. I will give a brief overview of the Chinese language diction in International Phonetic Alphabet. Finally, the qualities of the main arias in the opera, and some of the Chinese operatic techniques for singers, and their special effects, will be explored.
ContributorsBan, Banlingyu (Author) / FitzPatrick, Carole (Thesis advisor) / Norton, Kay (Committee member) / Ryan, Russell (Committee member) / Arizona State University (Publisher)
Created2020
Description
ABSTRACT
Emilie Mayer (1812-1883) was a prolific composer whose musical works, which encompassed eight symphonies, four overtures, an opera, dozens of sonatas, eight string quartets, solo piano works, and nearly 130 songs for solo voice or vocal quartet, were performed in the foremost concert halls in Berlin and across Germany. She studied with lauded teachers: Carl Loewe (1796-1869), Adolph Bernhard Marx (1795-1866), and Wilhelm Wieprecht (1802-1872). Her talent was applauded by audiences and critics wrote favorably, despite their reservations about women composers. However, even with this unusual pedigree, Mayer’s works nearly disappeared from concert stages after her death. How did this happen? This study aims to answer this question and will delve into Emilie Mayer’s life and works in context with the prejudices against female composers at the time, in order to determine how those biases have shaped the classical canon. Included is an in-depth stylistic analysis of Mayer’s surviving seven Lieder, along-side comparisons to similar works of other composers. In addition, appendices present Mayer’s remaining Lieder in a new, modernized edition, with selected songs transposed for better accessibility for lower voices. Relative lack of female representation in modern-day concert halls and music history books correlates to previous misconceptions of female composers. Studying the works of Emilie Mayer will support her addition to the classical repertoire, help correct the male-gendered canon that persists, and help modern female composers realize their history is not confined to a footnote.
Emilie Mayer (1812-1883) was a prolific composer whose musical works, which encompassed eight symphonies, four overtures, an opera, dozens of sonatas, eight string quartets, solo piano works, and nearly 130 songs for solo voice or vocal quartet, were performed in the foremost concert halls in Berlin and across Germany. She studied with lauded teachers: Carl Loewe (1796-1869), Adolph Bernhard Marx (1795-1866), and Wilhelm Wieprecht (1802-1872). Her talent was applauded by audiences and critics wrote favorably, despite their reservations about women composers. However, even with this unusual pedigree, Mayer’s works nearly disappeared from concert stages after her death. How did this happen? This study aims to answer this question and will delve into Emilie Mayer’s life and works in context with the prejudices against female composers at the time, in order to determine how those biases have shaped the classical canon. Included is an in-depth stylistic analysis of Mayer’s surviving seven Lieder, along-side comparisons to similar works of other composers. In addition, appendices present Mayer’s remaining Lieder in a new, modernized edition, with selected songs transposed for better accessibility for lower voices. Relative lack of female representation in modern-day concert halls and music history books correlates to previous misconceptions of female composers. Studying the works of Emilie Mayer will support her addition to the classical repertoire, help correct the male-gendered canon that persists, and help modern female composers realize their history is not confined to a footnote.
ContributorsSadownik, Stephanie Beth (Author) / Weiss, Stephanie (Thesis advisor) / Norton, Kay (Thesis advisor) / Ryan, Russell (Committee member) / Arizona State University (Publisher)
Created2020
Description
ABSTRACT
"The Soul Unto Itself," a chamber music song cycle, was commissioned by the author, Rosa LoGiudice, and composed by William Clay, a doctoral candidate in composition at Arizona State University. The cycle was conceived and composed in the summer and fall of 2019. The chamber ensemble was a sextet comprised of Megan Law, mezzo-soprano, Kristi Hanno, clarinet, Emilio Vazquez, violin, Rittika Gambhir, bassoon, Nathaniel De la Cruz, double bass, and Rosa LoGiudice, piano, all based in Tempe, Arizona. The song cycle was premiered in a lecture recital on December 8, 2019 at Hammer and Strings Conservatory in Gilbert, AZ.
"The Soul Unto Itself" is a cycle of six songs based on poems of Emily Dickinson. The poems all have common themes of personal transformation achieved through the introspective observations of the poet. An unusual chamber ensemble was chosen to include instruments not commonly used in vocal chamber music in order to create a greater variety of musical colors and timbres. This project included the creation of the musical score, a live performance that was video recorded, and the research paper. This document discusses the process of working with the composer, rehearsing the music as it was being composed, and negotiating revisions necessary to make the music more effective in performance. Each song is discussed in detail, especially the connection between the music and poetry, the overall form of the song, revisions discussed and implemented, and important motivic relationships between the songs that unify the cycle. In summary, the process of collaborating with a composer is a rewarding experience for both the performers and the composer, as everyone is challenged to improve their craft and overcome obstacles to achieve a successful performance.
"The Soul Unto Itself," a chamber music song cycle, was commissioned by the author, Rosa LoGiudice, and composed by William Clay, a doctoral candidate in composition at Arizona State University. The cycle was conceived and composed in the summer and fall of 2019. The chamber ensemble was a sextet comprised of Megan Law, mezzo-soprano, Kristi Hanno, clarinet, Emilio Vazquez, violin, Rittika Gambhir, bassoon, Nathaniel De la Cruz, double bass, and Rosa LoGiudice, piano, all based in Tempe, Arizona. The song cycle was premiered in a lecture recital on December 8, 2019 at Hammer and Strings Conservatory in Gilbert, AZ.
"The Soul Unto Itself" is a cycle of six songs based on poems of Emily Dickinson. The poems all have common themes of personal transformation achieved through the introspective observations of the poet. An unusual chamber ensemble was chosen to include instruments not commonly used in vocal chamber music in order to create a greater variety of musical colors and timbres. This project included the creation of the musical score, a live performance that was video recorded, and the research paper. This document discusses the process of working with the composer, rehearsing the music as it was being composed, and negotiating revisions necessary to make the music more effective in performance. Each song is discussed in detail, especially the connection between the music and poetry, the overall form of the song, revisions discussed and implemented, and important motivic relationships between the songs that unify the cycle. In summary, the process of collaborating with a composer is a rewarding experience for both the performers and the composer, as everyone is challenged to improve their craft and overcome obstacles to achieve a successful performance.
ContributorsLoGiudice, Rosa Mia (Author) / Campbell, Andrew (Thesis advisor) / Ryan, Russell (Committee member) / Rockmaker, Jody (Committee member) / Arizona State University (Publisher)
Created2020