Matching Items (4)
Description
Concert bands as we know them today started in the nineteenth century. The repertoire at that time consisted primarily of orchestral transcriptions penned almost exclusively by people who identified as white male. In the twentieth century, even as the creation of original works for concert band became common place, the rate of compositions written by someone other than a white male was minimal. Composers from other communities were seldom played or introduced into the canon. Today, the instances of concerts including only white male composers are increasingly rare. Diverse and innovative programming have become much more the norm and the opportunities for composers from underrepresented communities have never been greater. This project describes the commissioning and recording process of six new compositions for concert band from composers of traditionally underrepresented communities and backgrounds. And since several of the pieces are playable by public school bands, it also includes a pedagogically-based performance guide for each work.
ContributorsJones, Malcolm James Arthur (Author) / Caslor, Jason (Thesis advisor) / Hudson, James G (Committee member) / Knowles, Kristina (Committee member) / Myers, Nathan (Committee member) / Arizona State University (Publisher)
Created2020
Description
In recent years, the Silicon Super-Junction (SJ) power metal-oxide semiconductor field-effect transistor (MOSFET), has garnered significant interest from spacecraft designers. This is due to their high breakdown voltage and low specific on-state resistance characteristics. Most of the previous research work on power MOSFETS for space applications concentrated on improving the radiation tolerance of low to medium voltage (~ 300V) power MOSFETs. Therefore, understanding and improving the reliability of high voltage SJMOS for the harsh space radiation environment is an important endeavor.In this work, a 600V commercially available silicon planar gate SJMOS is used to study the SJ technology’s tolerance against total ionizing dose (TID) and destructive single event effects (SEE), such as, single event burnout (SEB) and single event gate rupture (SEGR). A technology computer aided design (TCAD) software tool is used to design the SJMOS and simulate its electrical characteristics.
Electrical characterization of SJMOS devices showed substantial decrease in threshold voltage and increase in leakage current due to TID. Therefore, as a solution to improve the TID tolerance, metal-nitride-oxide-semiconductor (MNOS) capacitors with different oxide
itride thickness combinations were fabricated and irradiated using a Co-60 gamma-source. Electrical characterization showed all samples with oxide
itride stack gate insulators exhibited significantly higher tolerance to irradiation when compared to metal-oxide-semiconductor capacitors.
Heavy ion testing of the SJMOS showed the device failed due to SEB and SEGR at 10% of maximum rated bias values. In this work, a 600V SJMOS structure is designed that is tolerant to both SEB and SEGR. In a SJMOS with planar gate, reducing the neck width improves the tolerance to SEGR but significantly changes the device electrical characteristics. The trench gate SJ device design is shown to overcome this problem. A buffer layer and larger P+-plug are added to the trench gate SJ power transistor to improve SEB tolerance. Using TCAD simulations, the proposed trench gate structure and the tested planar gate SJMOS are compared. The simulation results showed that the SEB and SEGR hardness in the proposed structure has improved by a factor of 10 and passes at the device’s maximum rated bias value with improved electrical performance.
Electrical characterization of SJMOS devices showed substantial decrease in threshold voltage and increase in leakage current due to TID. Therefore, as a solution to improve the TID tolerance, metal-nitride-oxide-semiconductor (MNOS) capacitors with different oxide
itride thickness combinations were fabricated and irradiated using a Co-60 gamma-source. Electrical characterization showed all samples with oxide
itride stack gate insulators exhibited significantly higher tolerance to irradiation when compared to metal-oxide-semiconductor capacitors.
Heavy ion testing of the SJMOS showed the device failed due to SEB and SEGR at 10% of maximum rated bias values. In this work, a 600V SJMOS structure is designed that is tolerant to both SEB and SEGR. In a SJMOS with planar gate, reducing the neck width improves the tolerance to SEGR but significantly changes the device electrical characteristics. The trench gate SJ device design is shown to overcome this problem. A buffer layer and larger P+-plug are added to the trench gate SJ power transistor to improve SEB tolerance. Using TCAD simulations, the proposed trench gate structure and the tested planar gate SJMOS are compared. The simulation results showed that the SEB and SEGR hardness in the proposed structure has improved by a factor of 10 and passes at the device’s maximum rated bias value with improved electrical performance.
ContributorsMuthuseenu, Kiraneswar (Author) / Barnaby, Hugh (Thesis advisor) / Kozicki, Michael (Committee member) / Holbert, Keith E. (Committee member) / Gonzalez Velo, Yago (Committee member) / Arizona State University (Publisher)
Created2020
Description
Ernest Bloch’s Suites for Solo Cello (B. 93, 94, 97) contain a melodic-harmonic language unlike any other twentieth-century unaccompanied work, and when transcribed for viola, become meaningful additions to the existing viola repertoire. Each movement within these three works has its own distinct dancelike character, much like J.S. Bach’s Suites for Solo Cello (BWV 1007-1012). The melodies contain a persistent lyrical quality, and the harmonies are modal and reminiscent of folk music. Rather than compose an appropriate ending to Bloch’s incomplete Suite for Solo Viola (B. 101), a transcription of Bloch’s Suites for Solo Cello provides violists with more variety and opportunity for musicianship. These works present technical challenges such as rapid string crossings, sudden and vast register changes, complex rhythms and meter, and offer interpretationally rich passages. The level of these difficulties can prepare violists for more challenging twentieth-century works; thus, transcribing the Bloch Suites provides an opportunity to bridge a pedagogical divide in solo viola repertoire.
This project includes the transcriptions of Bloch’s Suites for Solo Cello, a performance edition, and a recording. Included is an overview of why these works are suitable for the viola, how these arrangements help fill a pedagogical gap in the unaccompanied viola repertoire, and insight into the transcription process. The performance recording captures the accessibility of these works for violists wishing to perform them and shows the integrity and variety of each piece by programming them all on a single recital.
This project includes the transcriptions of Bloch’s Suites for Solo Cello, a performance edition, and a recording. Included is an overview of why these works are suitable for the viola, how these arrangements help fill a pedagogical gap in the unaccompanied viola repertoire, and insight into the transcription process. The performance recording captures the accessibility of these works for violists wishing to perform them and shows the integrity and variety of each piece by programming them all on a single recital.
ContributorsHankins, Kimberly Michelle (Author) / Buck, Nancy (Thesis advisor) / Feisst, Sabine (Committee member) / Landschoot, Tom (Committee member) / Arizona State University (Publisher)
Created2020
Description
Positioned between Beethoven and Liszt in the golden period, Carl Czerny (1791-1857) played a significant historical role in the area of piano pedagogy. Many pianists are familiar with and have played Czerny’s études, or technical exercises. However, few delve into Czerny’s piano works for performance, including eleven piano sonatas and more than 180 works titled variations. The project at hand examines three of Carl Czerny’s variation works for piano: Opus 33 (on a theme of Rode), Opus 281 (on a theme from Bellini’s Norma, in its solo piano version), and Opus 292 (on an original theme). These works are explored from both compositional and performance perspectives. After a brief biography of Czerny that places his variations into the context of his compositional output, the three variation sets are given analytical description. A chapter on the “Rode Variations” focuses on the technical and musical challenges for the pianist. An important conclusion reached is that these somewhat-neglected works might be attractive to pianists looking to expand their repertoire.
ContributorsTang, Tingshuo (Author) / Hamilton, Robert (Thesis advisor) / Creviston, Hannah (Committee member) / Holbrook, Amy (Committee member) / Arizona State University (Publisher)
Created2020