Mefloquine : For Prophylaxis and Treatment of Malaria

Palmer, Katherine J.,Holiday,Stephen M.,Brogden,Rex N. Medical Publications Korea 1993 Medical Progress Vol.15 No.10

Options available on University English Reading Instruction in Korea

Palmer, Robert 동의대학교 2004 인간과 문화 연구 Vol.- No.9

American Media Coverage of the Assassination of Durham White Stevens

Palmer, Brandon 성균관대학교 동아시아학술원 2009 Sungkyun Journal of East Asian Studies Vol.9 No.1

On March 23, 1908 Chang In-hwan assassinated Durham White Stevens in San Francisco. Chang, a Korean nationalist, blamed Stevens, a pro-Japanese advisor to the Korean government, for the increasing Japanese presence in Korea. The Stevens assassination set off a firestorm of news coverage that examined the Korean independence movement, exposed Stevens' activities in Korea, and reignited debates surrounding Asian immigration to the United States. This article analyzes 19 major newspapers throughout the United States to reveal American public sentiments toward the Korean nationalist movement. Specifically, the tone and bias found in most newspaper articles exemplified the hostile social climate Korean-American faced community in California.

Maximising the lateral resolution of near-surface seismic refraction methods

Palmer, Derecke Korean Society of Earth and Exploration Geophysici 2009 지구물리와 물리탐사 Vol.12 No.1

The tau-p inversion algorithm is widely employed to generate starting models with most computer programs, which implement refraction tomography. This algorithm emphasises the vertical resolution of many layers, and as a result, it frequently fails to detect even large lateral variations in seismic velocities, such as the decreases which are indicative of shear zones. This study demonstrates the failure of the tau-p inversion algorithm to detect or define a major shear zone which is 50m or 10 stations wide. Furthermore, the majority of refraction tomography programs parameterise the seismic velocities within each layer with vertical velocity gradients. By contrast, the Generalized Reciprocal Method (GRM) inversion algorithms emphasise the lateral resolution of individual layers. This study demonstrates the successful detection and definition of the 50m wide shear zone with the GRM inversion algorithms. The existence of the shear zone is confirmed by a 2D analysis of the head wave amplitudes and by numerous closely spaced orthogonal seismic profiles carried out as part of a later 3D refraction investigation. Furthermore, an analysis of the shot record amplitudes indicates that a reversal in the seismic velocities, rather than vertical velocity gradients, occurs in the weathered layers. The major conclusion reached in this study is that while all seismic refraction operations should aim to provide as accurate depth estimates as is practical, those which emphasise the lateral resolution of individual layers generate more useful results for geotechnical and environmental applications. The advantages of the improved lateral resolution are obtained with 2D traverses in which the structural features can be recognised from the magnitudes of the variations in the seismic velocities. Furthermore, the spatial patterns obtained with 3D investigations facilitate the recognition of structural features such as faults which do not display any intrinsic variation or 'signature' in seismic velocities.

A simple approach to refraction statics with the Generalized Reciprocal Method and the Refraction Convolution Section

Palmer Derecke,Jones Leonie Korean Society of Earth and Exploration Geophysici 2005 지구물리와 물리탐사 Vol.8 No.1

We derive refraction statics for seismic data recorded in a hard rock terrain, in which there are large and rapid variations in the depth of weathering. The statics corrections range from less than 10 ms to more than 70 ms, often over distances as short as 12 receiver intervals. This study is another demonstration of the importance in obtaining accurate initial refraction models of the weathering in hard rock terrains in which automatic residual statics may fail. We show that the statics values computed with a simple model of the weathering using the Generalized Reciprocal Method (GRM) and the Refraction Convolution Section (RCS) are comparable in accuracy to those computed with a more complex model of the weathering, using least-mean-squares inversion with the conjugate gradient algorithm (Taner et al., 1998). The differences in statics values between the GRM model and that of Taner et al. (1998) systematically vary from an average of 2ms to 4ms over a distance of 8.8 km. The differences between these two refraction models and the final statics model, which includes the automatic residual values, are generally less than 5 ms. The residuals for the GRM model are frequently less than those for the model of Taner et al. (1998). The RCS statics are picked approximately 10 ms later, but their relative accuracy is comparable to that of the GRM statics. The residual statics values show a general correlation with the refraction statics values, and they can be reduced in magnitude by using a lower average seismic velocity in the weathering. These results suggest that inaccurate average seismic velocities in the weathered layer may often be a source of short-wavelength statics, rather than any shortcomings with the inversion algorithms in determining averaged delay times from the traveltimes.

Statics corrections for shallow seismic refraction data

Palmer Derecke,Nikrouz Ramin,Spyrou Andreur Korean Society of Earth and Exploration Geophysici 2005 지구물리와 물리탐사 Vol.8 No.1

The determination of seismic velocities in refractors for near-surface seismic refraction investigations is an ill-posed problem. Small variations in the computed time parameters can result in quite large lateral variations in the derived velocities, which are often artefacts of the inversion algorithms. Such artefacts are usually not recognized or corrected with forward modelling. Therefore, if detailed refractor models are sought with model based inversion, then detailed starting models are required. The usual source of artefacts in seismic velocities is irregular refractors. Under most circumstances, the variable migration of the generalized reciprocal method (GRM) is able to accommodate irregular interfaces and generate detailed starting models of the refractor. However, where the very-near-surface environment of the Earth is also irregular, the efficacy of the GRM is reduced, and weathering corrections can be necessary. Standard methods for correcting for surface irregularities are usually not practical where the very-near-surface irregularities are of limited lateral extent. In such circumstances, the GRM smoothing statics method (SSM) is a simple and robust approach, which can facilitate more-accurate estimates of refractor velocities. The GRM SSM generates a smoothing 'statics' correction by subtracting an average of the time-depths computed with a range of XY values from the time-depths computed with a zero XY value (where the XY value is the separation between the receivers used to compute the time-depth). The time-depths to the deeper target refractors do not vary greatly with varying XY values, and therefore an average is much the same as the optimum value. However, the time-depths for the very-near-surface irregularities migrate laterally with increasing XY values and they are substantially reduced with the averaging process. As a result, the time-depth profile averaged over a range of XY values is effectively corrected for the near-surface irregularities. In addition, the time-depths computed with a Bero XY value are the sum of both the near-surface effects and the time-depths to the target refractor. Therefore, their subtraction generates an approximate 'statics' correction, which in turn, is subtracted from the traveltimes The GRM SSM is essentially a smoothing procedure, rather than a deterministic weathering correction approach, and it is most effective with near-surface irregularities of quite limited lateral extent. Model and case studies demonstrate that the GRM SSM substantially improves the reliability in determining detailed seismic velocities in irregular refractors.

The Role of Children in Daesoon Jinrihoe, a Korean New Religion

PALMER, Susan J.,GREENBERGER, Jason DAOS(The Daesoon Academy of Sciences) 2021 Journal of Daesoon Thought and the Religions of Ea Vol.1 No.1

This study attempts to investigate the role of children in the Korean new religious movement, Daesoon Jinrihoe. The research method combined archival studies with qualitative research; interviews with two members involved in educating youth through the establishment of Youth Camps and Donggeurami, the order's youth magazine. Our four research questions were: 1. Do children play a central role in the millennial vision of this NRM? 2. Are children separated from the world? 3. Have Daesoon childrearing methods been challenged by secular authorities or anticult groups? 4. Are there procedures to educate children in the religious beliefs and values of their parents and the community? Our results found that Daesoon Jinrihoe appears to be a religion designed for adults. Children do not usually participate in religious activities. On the other hand, since 2005 there has been a strategic effort to educate the children in the faith of their parents, through the establishment of Youth Camps and the youth magazine, Donggeurami.

A Study of University Conversation Instruction and Reconstruction Tasks

Palmer, Robert 팬코리아영어교육학회 2005 영어교육연구 Vol.17 No.3

This study examines the effectiveness of conversation instruction at universities. It compares four conversation classes taught in the usual way (Condition 1) with students in other classes working with the same textbook material (focused on the present continuous) under three other non-instructor conditions; Condition 2: students (3 classes) working in pairs on reconstruction tasks, Condition 3: students (2 classes) working individually on reconstruction tasks, and Condition 4: students (2 classes) simply reading the textbook (the control). Two types of evaluation were used -- for communicative effect and for verb formation. An immediate posttest and a 4-week delay test were administered. The instructors’ classes taught in the usual way (Condition 1) failed to outperform the control students. Those doing the reconstruction tasks (Conditions 2 and 3) outperformed the instructors’ classes (Condition 1) and the control on both post and delayed tests.

An Alternative Approach to the Language Major

Palmer, Benjamin W. 충남대학교 어학연구소 1981 언어 Vol.2 No.-

Much of what we read and hear today about the study of foreign languages has to do with how to learn a language, how to teach a language and how people have achieved various degrees of success in studying and learning laguages. There are also available many testimonials devoted to the varied experiences of people mostly young-who have discovered new horizons through contact with another language. What we do not read much about is why people study foreign languages or what they expect to gain from their work.

Drug Selection in Treatment of Polyarthritis

Palmer, David G. Medical Publications Korea 1974 Medical Progress Vol.1 No.6