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Hideo "Lefty" Kuniyoshi oral history interview, part 3 of 5, 2005-03-22
No full textMr. Kuniyoshi describes his time at Camp Shelby, discussing his role as a squad leader and discusses some of the former members of his squad. He next talks about being shipped to the frontline in Italy and describes a situation in which his platoon leader was killed by a mine blast. Concluding the interview with a discussion of the battle at Hill 140, he describes his mental attitude while fighting and what it takes to be involved in combat.; Good picture quality, clear audio [Physical Media Notes
Kazuo Yamaguchi oral history interview, part 1 of 6, May 4, 2003
No full textShort introduction of the Hanashi interview crew. Portrait of young Kazuo Yamaguchi in military uniform. Kazuo Yamaguchi was born and raised in New York. His father came to America from Japan to start a living. Kazuo mentions that his father was always homesick, and his fondest memory with him was singing Japanese folk songs. The reason how he and his family gained acceptance within the American community was because of his grandfather -- he was an exceptional cook (of both American and Japanese food) and he had a successful greenhouse business. Kazuo's family name came from a very prominent familial lineage in Japan. He also describes the ethnic make up of his neighborhood, and his childhood friends
Katsumi Hikido oral history interview, part 3 of 7, 2004-08-22
No full textIn this segment, Katsumi "Kats" Hikido speaks about his life and experiences spent after he and his family were "evacuated" from their home. He talks about going to Turlock Assembly Center before moving to Gila River Concentration Camp. Hikido provides details on many of his experiences during this time including conditions, his attitude, and acts of kindness from others. He also talks about the loyalty questionnaire and his experience with it. Lastly, Hikido recounts the transitions he experienced, from briefly attending Fenn College in Cleveland to being drafted as a replacement for the 442nd
Masao "Masa" Sakagami oral history interview, part 3 of 5, 1998-09-12
No full textSakagami discusses his voyage overseas. He details about his experiences at the Gothic Line. Sakagami also discusses about when he first joined up with the 100th Infantry Battalion
Thomas Sakamoto oral history interview, part 4 of 6, 2001-06-03
No full textThomas Sakamoto talks about his experience as a Military Intelligence Service linguist. His responsibilities were to translate captured Japanese documents and interrogated Japanese prisoners of war. He explains the conditions of jungle warfare in the Pacific Theater. He talks about how he met his wife, who was also a Japanese linguist. He goes on to talk about the end of the war, where he was sent to the Occupation of Japan as part of the War Correspondence
Jimmy Konno oral history interview, part 3 of 4, 2003-05-03
No full textKonno discusses his experiences with prejudice in the 1940s, provides some thoughts regarding the end of the war, and talks about his assignments writing speeches for the Regimental Headquarters Company in Italy. While in Italy, Konno also had assignments processing and guarding German POWs, and discusses his interactions with them as well as seeing his brother while overseas. Lastly, Konno discusses the black market and corresponding with his family while overseas; and talks about how he met his wife
Benjamin Hazard oral history interview, part 7 of 7, 2004-08-22
No full textIn this segment, Benjamin Hazard begins by describing how he met his wife while serving in Korea and their developing courtship and eventual marriage. He then moves on to talking about his interest and involvement with kendo over much of his lifetime before ending with brief advice for future generations about embracing foreign languages and cultures with an open mind
Munetatsu "Moon" Saito, oral history, 2003-04-02
No full textAn oral history interview with Munetatsu "Moon" Saito, 2003 April 02, conducted by Michelle Dojiri with Go for Broke National Education Center. Parts 1-5. War or Conflict: World War, 1939-1945. Unit of Service: 442nd Regimental Combat Team. Branch of Service: Army. Entrance into Service: Volunteered. Date of Birth: 1921 November 11. Campaigns/Battles: Champaign Campaign, The Gothic Line, Bruyeres, Belmont, Biffontaine, Rescue of the Lost Battalion. Nickname: Moon
Functional real-time MRI of the upper airway
No full text2019-10-28Magnetic Resonance Imaging (MRI) is the most promising modality for evaluating upper airway dynamics, because it is non-invasive and involves no ionizing radiation. For the past decade, real-time MRI (RT-MRI) has been extensively used with significant improvement in spatiotemporal resolution to time-resolve dynamics of natural speech production and sleep disorder. ❧ Existing techniques track tissue surfaces, such as the vocal tract and airway. However, they lack the ability to measure upper airway functions, such as internal muscle movement and muscle tone variation across different airway sites. This dissertation introduces new techniques and novel experiment designs compatible with RT-MRI techniques in order to reveal internal muscle motion and physiological traits of the upper airway. ❧ I develop intermittent tagging during RT-MRI as a means to visualize internal tongue motion during speech production. This approach eliminates the need for re-binning data using multiple repetitions and is suitable for investigations of natural speech production. I demonstrate a framework to select imaging parameters in consideration of image quality and tag persistence and achieved an imaging window of approximately 650-800 ms at 1.5 T. I demonstrate the ability to capture tongue motion patterns and their relative timing as exemplified by internal tongue deformation during American English diphthong vowels and consonants. ❧ Next, I demonstrate intermittent tagging with REALTAG to extend tag persistence. This approach provides 2× improvement in contrast-to-noise ratio (CNR), > 1.9× longer tag persistence, and is suitable for investigations of natural speech production. I develop an improved method for phase sensitive reconstruction that provides superior image quality compared to prior approaches in the presence of time-varying background phase. I demonstrate an imaging window of 1250 ms at 1.5 T, which is adequate to capture internal tongue deformations during American English vowel-to-vowel transitions in separate words. This provides a powerful new tool for imaging muscle movement during natural speech production and other applications, where CINE imaging is not applicable or suboptimal due to the natural variability of human action. ❧ Finally, I present a novel RT-MRI based experiment that measures upper airway biomarkers relevant to the study of sleep-related breathing disorders. These are upper airway loop gain (UALG) and the fluctuation of airway area (FAA). I combine simultaneous multi-slice RT-MRI with continuous positive airway pressure (CPAP) and carefully designed pressure changes. I demonstrate that this new test can localize specific airway sites that are prone to collapse, while the conventional apnea-hypopnes index only provides estimation of the overall severity of obstructive sleep apnea. This new experiment can directly measure location-specific active (UALG) and passive (FAA) physiological traits, and visually resolve airway dynamics. ❧ In this dissertation, I introduce novel techniques and experiment designs while leverage maturing fast imaging methods to provide the needed spatiotemporal resolution for upper airway RT-MRI. With the proposed methods, we can set our sights further than the anatomical structures and onto the even more interesting yet intrinsically complex functions of the upper airway
Flame characteristics in quasi-2D channels: stability, rates and scaling
No full text2019-10-23Understanding propagation and behaviors of premixed flames in narrow channels, tubes, gaps or slots is important and relevant to several areas of combustion research and applications. For instance, in internal combustion engines (ICEs), combustion chambers at the time of combustion (when the piston is at top dead center position, TDC) are in narrow channel like shapes with high aspect ratios. Flames in such environment exhibit different behaviors and instabilities comparing to ones in mostly commonly used open configurations with little flame-wall interactions, including opposing jets and fan-stir reactors. This study focuses on the behaviors and propagation rates of flames in a confined environment, such as a narrow channel. ❧ A Hele-Shaw cell with varying gap thicknesses is used as the combustion chamber for its high aspect ratio and simple geometry. The flame shapes and propagation rates of quasi-2D premixed-gas flames in fuel-O₂-inert mixtures having a range effective Lewis numbers, adiabatic temperatures and orientation (upward (g=1), horizontal (g=0) and downward (g=−1) propagation) are studied. Instabilities due to thermal expansion of the burned gas (Darrieus-Landau, DL), Lewis number (diffusive-thermal, DT), buoyancy (Rayleigh-Taylor, RT) and viscosity contrast across the flame (Saffman-Taylor, ST) were found to have substantial effects on these shapes and rates. ❧ Classic cusp shapes of DL instability are observed in flames with effective Lewis numbers ≥ 1, while flames with effective Lewis numbers < 1 present dendritic flame fronts under the combined effect of DL and DT instabilities. Furthermore, due to DT instability, ST of flames with effective Lewis numbers < 1 is much faster than its of flames with effective Lewis numbers ≥1. RT instability destabilizes upward propagating flames and stabilizes downward propagating flames. Upward propagating flames also exhibit higher ST than downward propagating flames because of RT instability. ST instability is most prominent in fast propagating flames propagating through the Hele-Shaw cell with the smallest h. ❧ JS parameter (σ) is developed base on derivations of Joulin and Sivashinsky (1994) as a scaling parameter of the “driving force” for flame wrinkling. Although, the original derivations are limited in describing DT instability, σestimated using effective Lewis number scaled local characteristic flame speed ⎷(αΚₑₓₜ), Κₑₓₜ = extinction strain rate) is found to be effective characterizing flames under various conditions. It can be seen as an analog to turbulence intensity in premixed turbulent flame studies. However, rich methane flames are the exceptions. ❧ Overall, it is asserted that these flame-generated instabilities in the absence of forced turbulence have a significant influence on ST in practical combustion devices such premixed-charge internal combustion engines and lean-burn stationary gas turbines