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Injury Analysis of a 12-passenger Van Rollover Accident
김상철,최형연,김병우,박관진,안성민,이강현,Kim, S.C.,Choi, H.Y.,Kim, B.W.,Park, G.J.,An, S.M.,Lee, K.H. Korean Auto-vehicle Safety Association 2018 자동차안전학회지 Vol.10 No.1
The fatality of rollover accidents in motor vehicle crashes is high despite their low incidence. Through the investigation of a 12-passenger van rollover accident in which 10 passengers were involved, we intend to analyze the correlation between the severity of the injury and the position of the occupants. We collected accident information from medical records, interviews, photo-images of the damaged van, field surveys, and the results of the Korean New Car Assessment Program (KNCAP). Based on the occupants' position, we classified injury sites and estimated injury severity. Passenger injury severity was evaluated by trauma score calculation. The initiation type of the rollover accident was passenger side 'fall-over' and the Collision Deformation Classification (CDC) code for the damaged van was 00TDZO3. The crash of the van involved 10 passengers, with an average age of $16.3{\pm}4.2years$. Few of the occupants had fastened seat belts at the time of the incident, and there was no airbag installed. One patient sustained severe liver injury and another was diagnosed with a fracture of the right humerus. The most common injuries were at the upper extremities and the neck. The average of Injury Severity Score (ISS) was $4.8{\pm}5.9$, and the average ISS of right-seated, mid-seated and left-seated occupants was $7.5{\pm}9.3$, $1.5{\pm}0.7$, and $3.3{\pm}2.1$ respectively (p>0.05). In the rollover (to-passenger side) accident of occupant unfastened, the average ISS of right-seated occupants (near side) was higher, but there was no statistically significant difference.
논문 : 정보처리 및 복합기술 ; 다중 GPS 수신기에 의한 농업용 차량의 정밀 위치 계측(1) -오차추정 시뮬레이션 및 고정위치계측-
김상철 ( S. C. Kim ),조성인 ( S. I. Cho ),이승기 ( S. G. Lee ),이운용 ( W. Y. Lee ),홍영기 ( Y. G. Hong ),김국환 ( G. H. Kim ),조희제 ( H. J. Cho ),강지원 ( G. W. Gang ) 한국농업기계학회 2011 바이오시스템공학 Vol.36 No.2
This study was conducted to develop a robust navigator which could be in positioning for precision farming through developing a plural GPS receiver with 4 sets of GPS antenna. In order to improve positioning accuracy by integrating GPS signals received simultaneously, the algorithm for processing plural GPS signal effectively was designed. Performance of the algorithm was tested using a simulation program and a fixed point on WGS 84 coordinates. Results of this study are aummarized as followings. 1. 4 sets of lower grade GPS receiver and signals were integrated by kalman filter algorithm and geometric algorithm to increase positioning accuracy of the data. 2. Prototype was composed of 4 sets of GPS receiver and INS components. All Star which manufactured by CMC, gyro compass made by KVH, ground speed sensor and integration S/W based on RTOS(Real Time Operating System)were used. 3. Integration algorithm was simulated by developed program which could generate random position error less then 10 m and tested with the prototype at a fixed position. 4. When navigation data was integrated by geometrical correction and kalman filter algorithm, estimated positioning erros were less then 0.6 m and 1.0 m respectively in simulation and fixed position tests.
김상철 ( S C Kim ),배동호 ( D H Bae ),김강식 ( K S Kim ),박용윤 ( Y Y Park ),이종원 ( J W Lee ),박신호 ( S H Park ) 한국축산학회 1971 한국축산학회지 Vol.13 No.2
Digestibility comparisons were made using Korean native cattle, native goat, sheep, rabbit, pig and poultry with two different roughages, two different concentrates and soybean oil cake. a. Digestibility difference for roughages There were no significant differences in digestion coefficients, D.C.P. and T.D.N, content, except N.F.E in the case of good quality hay, and crude protein and crude fat in the case of poor quality hay between Korean native cattle, native goat and sheep. However, there were significant differences between the animals mentioned above and rabbit in all digestion coefficients, D.C.P. and T.D.N. content, except crude protein and crude fat. b. Digestibility difference for concentrates There were significant differences in digestion coefficients and digestible nutrients between the animal used. Digestibility of sheep and native goat, and pig and poultry showed similar trend. Rabbit Showed the highest T.D.N. content in the case of corn. However, this superiority in digestibility disappeared in the case of wheat bran. c. Digestibility difference for soybean oil cake Significant differences in digestibility of crude fat, N.F.E. crude fiber, and T.D.N. content were found between ruminants and monogastric animals. No significant differences were observed in digestibility of crude protein and D.C.P. content between the animals used.
Bi2212/Ag 선재의 초전도 특성에 대한 열처리의 영향
김상철,하동우,송규정,오상수,이남진,한일용,오재근,손호상,Kim, S.C.,Ha, D.W.,Song, K.J.,Oh, S.S.,Lee, N.J.,Han, I.Y.,Oh, J.G.,Sohn, H.S. 한국초전도학회 2006 Progress in superconductivity Vol.8 No.1
We have fabricated double stacked 385 filamentary Bi2212/Ag round wires which have different Ag ratios. The wires have been heat-treated at the maximum temperature($T_{max}$) of $882{\sim}896^{\circ}C$ for 0.5 h. Effect of heat treatment on critical current density and critical temperature on Bi2212/Ag round wires has been studied. Critical current density of the wire heat -treated at $890^{\circ}C$ showed 206,250 $A/cm^2$ at 4.2 K, 0 T and critical temperature of the wire was 83 K. Microstructure of the wires also has been studied via optical microscopy and SEM.