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송시원,김진홍,박재형,김승현,임태섭,김진호,김신,이봉수 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.9
We fabricated a 15 m long position-sensitive plastic scintillation optical fiber (PSOF) detector consisting of a PSOF, two photomultiplier tubes, four fast amplifiers, and a digitizer. A single PSOF was used as a sensing part to estimate the gamma-ray source position, and 137Cs, an uncollimated solid-disk-type radioactive isotope, was used as a gamma-ray emitter. To improve the sensitivity, accuracy, and measurement time of a PSOF detector compared to those of previous studies, the performance of the amplifier was optimized, and the digital signal processing (DSP) was newly designed in this study. Moreover, we could measure very low dose rates of gamma-rays with high sensitivity and accuracy in a very short time using our proposed PSOF detector. The results of this study indicate that it is possible to accurately and quickly locate the position of a very low dose rate gamma-ray source in a wide range of contaminated areas using the proposed position-sensitive PSOF detector
송시원,강정수 대한동의병리학회 2001 동의생리병리학회지 Vol.15 No.4
In the field of oriental study do not find astronomical phenomena, geographical features and human different. In fact they figures to be an organism which helps one another and this theory let to deomancy. Based on theory of deomancy people dream of assimilate with nature. An ancient people tried to built the house at right time for themselves. The right time means heaven sent opportunity, place and structure means geographical feature and the harmony among men in the house. As we can see ancient people hoped to consider harmony between heaven, land and human. The theory of deomancy is asians' good morals and manners and this can separate into two parts tomb and present home (陽宅) The present home is living place such as house, town and city. A tomb is grave that effects ancestors which sounds superstitious. In deomancy land animation is living organism that take and emanate weather and vapor of the earth. The land animation means land is alive which carries on lives and endless universal cycle. As tomb-deomancy consider connection between life and death. Present home-deomancy(陽宅風水) should consider not only one person's life but also cycle of generation. As the vapor of earth get destroy, heaven sent opportunity, geographical features and harmony among men becomes one the KIMOON(奇門). In study of KIMOON(寄門), the tendency of present home follows good fortune and gets away from bad fortune will add up to our hopes.