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성형건(H.G. Sung),장진성(J.S. Jang),오석환(S.H. Oh),김영호(Y.H. Kim),최동환(D.W. Choi),노태성(T.S. Roh) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.5
The appearance of the negative differential pressure(NDP) between the breech pressure and the shot base pressure in the interior ballistics indicates that a risk of the serious damage on the barrel or the ammunition has increased. From this reason, the gun system must be designed to reduce the NDP during the ignition stage. So, the effect of the propellant configuration has been investigated on the NDP of the interior ballistics. In order to simulate the interior ballistics with, the gas-solid flow, the developed two-dimensional axi-symmetric code has been used with, the Eulerian-Lagrangian approach and the LSHUS method. The propellant geometry with, the progressive surface area has increased the NDP.
오석환,박조열,박희주,김정성,이수정 大韓神經精神醫學會 1972 신경정신의학 Vol.11 No.3
The authors studied on the family attitude toward psychosis with 100 cases selected from admitted patient's families at the Pusan University Hospital and other psychiatric hospital in Pusan area. The sample contained a proper proportion by sex, by age, by education, by relation and by occupational level. A series of questions framed to detect the family attitude toward public prejudice on psychosis, the attitude toward understanding of psychosis, the attitude toward financial problem, the attitude toward social recovery and the attitude toward support after discharge from mental hospital were asked by method of questionnaire. From the ?? results the authors could observe the followings. 1. Most of families appeared to be afflicted with public prejudice to psychosis. Many of them (62%) expressed their wishes to participate in endeavoring to eliminate those prejudice and majority of them (95%) called for need of collective enlightenment movement. 2. Many of families (91%) wanted to learn from charge doctors or hospitals how to understand and handle their patients. 3. Majority of families (96%) were quite eager and cooperative with patient's rehabilitation programs and also many of them (92%) insisted on the necessity of national assistance.