831 research outputs found
Letter from Karl I. Zimmerman and T.R. Martinez to Toshiko Chuman
A letter to Toshiko Chuman (nee Nakamura) from Karl I. Zimmerman, District Director of Immigration and Naturalization Service (INS) in Philadelphia, and T.R. Martinez, Acting Chief, Detention, Deportation and Parole Section. The letter regards his release from INS into the custody of her attorney, Wayne M. Collins.The Chuman (Hayao "Sam" and Toshiko) Papers documents the World War II experiences of Hayao "Sam" and Toshiko Chuman, who were Kibei Nisei born in the United States but grew up and completed school in Japan, and then returned to the U.S. prior to the war. It chronicles the Chuman's incarceration from the Santa Anita Assembly Center, through Jerome, Rohwer, Tule Lake camps, and the Santa Fe and Crystal City internment camps as well as their struggle for restoring their U.S. citizenships in the 1960s. The digital collection consists of mostly textual material, including correspondence, affidavits, incarceration camp records, lease agreements, financial documents, receipts, pamphlets, and booklets
Letter from Karl I. Zimmerman and T.R. Martinez to Hayao (Sam) Chuman
A letter to Hayao (Sam) Chuman from Karl I. Zimmerman, District Director of Immigration and Naturalization Service (INS) in Philadelphia, and T.R. Martinez, Acting Chief, Detention, Deportation and Parole Section. The letter regards his release from INS into the custody of his attorney, Wayne M. Collins.The Chuman (Hayao "Sam" and Toshiko) Papers documents the World War II experiences of Hayao "Sam" and Toshiko Chuman, who were Kibei Nisei born in the United States but grew up and completed school in Japan, and then returned to the U.S. prior to the war. It chronicles the Chuman's incarceration from the Santa Anita Assembly Center, through Jerome, Rohwer, Tule Lake camps, and the Santa Fe and Crystal City internment camps as well as their struggle for restoring their U.S. citizenships in the 1960s. The digital collection consists of mostly textual material, including correspondence, affidavits, incarceration camp records, lease agreements, financial documents, receipts, pamphlets, and booklets
A Study on the Flexible Multibody Dynamic Modeling of an Axial Piston Pump Considering Housing Flexibility
AbstractAxial piston type hydraulic pump is an important source of fluid power in hydraulic systems. In the present work, a methodology for modeling the dynamics of the pump in multibody framework considering component flexibility is studied. A multibody dynamic model of the pump is developed considering housing flexibility and pressure forces acting on the pistons. The flexibility of the housing is modeled using the relative nodal coordinate formulation (RNCF) with a floating frame of reference. The bearing forces, control piston force, swashplate motion and torque ripple are studied. The bearing and control piston force results are compared with the case of a rigid housing assembly. The experiments are conducted to measure the end cover vibration levels during operation of the pump. The vibration levels are also obtained from the simulation and compared with experiments. Numerical studies are conducted to better understand the influence of housing flexibility on the dynamics of the pump
A Study on the Dynamics and Vibration Behavior of an Axial Piston Pump Using Combined MBD/FE Approach
AbstractIn the present work a combined multibody dynamics(MBD) and finite element(FE) approach is developed for modeling the dynamics and vibration behaviour of an axial piston type hydraulic pump. A MBD model of the pumping mechanism is developed to predict the dynamic excitation forces at the bearings and control piston locations. The dynamic excitation forces in the frequency domain are obtained using fast fourier transform (FFT) with a rectangular type windowing function. A detailed FE model of the pump is developed consisting of the internal components, housing, and end cover. The dominant mode shapes and natural frequencies of the pump assembly are studied. The forced vibration behaviour of the pump is predicted by using the dynamic excitation forces from the MBD model. The numerical results are compared with the experimental results and a good agreement is found. Further, numerical studies are carried out to study the influence of component mass and stiffness on the vibration response
A Study on Fourier Spectral and Fourier-Hankel Spectral Field Variable Approximations in BEM for 2D Interior Helmholtz Problems
AbstractIn this work the numerical modeling of the time harmonic problems in acoustics using boundary element method (BEM) is studied. The different computational techniques and methods for the solution of acoustic problems are reviewed. The formulation of some of the conventional BEM techniques is presented. The mathematical formulation and numerical implementation of Fourier Spectral BEM (FSBEM) and Fourier-Hankel Spectral BEM (FHSBEM) is presented for 2D problems. The numerical implementation of the conventional C-1 and linear C0 BEM formulations and FSBEM/FHSBEM is carried out by developing MATLAB codes. The verification of the numerical implementation of C-1 and linear C0 BEM formulations is carried out by comparing with analytical solutions and FEM. The comparison of FSBEM and FHSBEM is carried out with C-1 and linear C0 BEM formulations
On the origins of Cyprideis torosa (Jones, 1850) and a short biography of Professor T.R. Jones
The original description and taxonomic attribution of Cyprideis torosa (Jones, 1850) is reviewed with reference to the type locality at Grays, Essex, SE England and several of the original specimens are re-illustrated. A short biography of its author, the geologist T.R. Jones, is provided
Season 10 Episode 11: Healthcare Around the World
Fans of U.S. health care reform point out that many other countries provide coverage for all their citizens, and no one files for bankruptcy due to medical bills. But how exactly do these countries do it? January Series guest & journalist T.R. Reid, author of The Healing of America: A Global Quest for Better, Cheaper, and Fairer Health Care, tells of his travels comparing systems around the world. Shirley Hoogstra hosts. Episode #1011
On the origins of Cyprideis torosa (Jones, 1850) and a short biography of Professor T.R. Jones
The original description and taxonomic attribution of Cyprideis torosa (Jones, 1850) is reviewed with reference to the type locality at Grays, Essex, SE England and several of the original specimens are re-illustrated. A short biography of its author, the geologist T.R. Jones, is provided
Gender dynamics in data collection on reproductive health: field experiences in Kerala, India
Reproductive health researchers tend to choose interviewers of the same sex as those interviewed. In many societies, it is considered unacceptable for men to interview women on topics of an intensely personal nature like sexuality or contraceptive use. In this paper, the author analyzes 21 interviews and 16 focus group discussions (FGDs) undertaken during a field study on the Quality of Services in the Indian Family Welfare Programs conducted in Kerala. The analysis was based on the model which identifies the principal participants in the interview as the respondent and the interviewer. In all these cases the contradiction between the gendered roles of the interviewer and interviewee are visible. However, if viewed in the context of the model provided by Briggs, it is clear that these contradictions are due to the differences in the social roles that the interviewers assumed and that the respondents ascribed to them and in the interactional goals of the interviewers and the respondents. Contradictions were also experienced during the FGDs. Educational sessions on contraception are a good tool for gathering sensitive information instead of the conventional interview, where the gendered roles are so crucial to the information gathering exercise itself
Klastische en kataklastische processen en hun betekenis voor de gesteentemechanica: Inleiding tot een breukmechanica voor gesteente
Civil Engineering and Geoscience
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