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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.
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.
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.
인후두위산역류증(Laryngopharyngeal Reflux: LPR)의 치료에 대한 RabeprazoleSodium(Parietd)의 임상효과와 안전성 검토
정광윤,전병선,고상현,권기환,권순영,권중근,김동영,김상철,김성완,김영모,김영호,김윤환,김장묵,Jung, K.W.,Jun, B.S.,Ko, S.H.,Kwon, K.H.,Kwon, S.Y.,Kwon, J.K.,Kim,, D.Y.,Kim,, S.C.,Kim,, S.W.,Kim,, Y.M.,Kim,, Y.H.,Kim,, Y.H.,Kim,, J.M. 대한기관식도과학회 2004 大韓氣管食道科學會誌 Vol.10 No.2
Background and objective : Rabeprazole is a new generation proton pump inhibitor, which has a rapid onset after first dose, predictable efficacy in all patients regardless of CYP2C19 genotype status, and less nocturnal acid breakthrough. The aim of the study is to investigate clinical efficacy and safety of rabeprazole sodium (Pariet 10mg qd)when administered once daily to patients with laryngopharyngeal reflux(LPR) disease. Methods : Among the patients who had visited the Department of Otolaryngology, those with LPR symptoms, had undergone laryngoscopy. Symptoms and endoscopic laryngeal sings were recorded initially, at 1 month, 2 months, 3 months, and more than 3 months, All patients were evaluated for clinical efficacy on the basis of symptom scores, reflux finding score(RFS), and side effects. Results : In general, most symptom scores and RFS improved over the time. Efficacy of the Pariet on LPR-related symptoms were $63.2\%,\;77.5\%,\;78.7\%,\;and\;90.9\%$ before 4 weeks, 4 to 8 weeks, 8 to 12 weeks, and after 12 weeks respectively. Efficacy on the RFS were $61.8\%,\;78.4\%,\;82.9\%,\;and\;85.5\%$ before 4 weeks, 4 to 8 weeks, 8 to 12 weeks, and after 12 weeks respectively. Pariet was well tolerated and was associated with few drug-related side effects. Conclusion Because of its efficacy and safety, Pariet may prove to be an alternative to currently available proton pump inhibitors.
IN VITRO 발효법에 의한 산야초류의 지대별 품종별 시기별 소화율의 변화
김상철 ( S C Kim ),박신호 ( S H Park ),신정남 ( J N Shin ) 한국축산학회 1971 한국축산학회지 Vol.13 No.1
A series ef in vitro(2-stage fermentation) O.M. digestibility measurement was conducted to study the effect of maturity stage and location difference of some widely distributed native grasses in Korea. An attempt was also made to find the effect of fertilizer application on O.M. digestibility of Echinochola macrocarvi from July to late September. The results obtained were as follows; a) In vitro O.M. digestibility of native grasses studied decreased as the growing season progressed, from May to September. The rate of depression of digestibility was greater from May to June and from Aug. to Sept. than from June to Aug. It was concluded from the results that native grasses should be utilized before September. b) Eight different species of native grasses, including Themada japonica, Miscanthus purpurascens, Cymbopogon gaeringii, Lespedexa cuneata, Andropagan micrauthus, Digitaria Sanguinalis, Setaria viridis, and Phragmites prosturatus, collected from five different locations at middle of August showed different O.M. digestibility due to different locations. In general, lower digestibility was obtained with the species collected from Alpine area. c) Fertilizer application of Echinochola macrocorvi depressed O.M. digestibility when compared to that of non-fertilized plot, except early growing stages. However, total digestible organic matter production was greater with fertilized than non-fertilized.
사료의 아미노산에 관한 연구 1 . 옥수수등 농후사료 수종의 아미노산 함량
김상철 ( S C Kim ),김강식 ( K S Kim ),장윤환 ( Y H Chiang ),이종원 ( C W Lee ),이창영 ( C Y Lee ),윤재인 ( C Y Yoon ) 한국축산학회 1972 한국축산학회지 Vol.14 No.3
The amino acid contents of some feedstuffs were determined at the Livestock Experiment Station in 1971. The ground samples which include about 30㎎ protein were placed in special glass bottles, and 200-400 times 6 N-HCl solution was pipetted in each bottle. They were freezed by liquid nitrogen, vacuumed by a rotary pump, sealed by a propane-gas burner, and digested in a 110℃ oven for 24 hours The adequate amount of filtered amino acids mixture was analyzed for other ammo acids than cysteine and methionine by long and short columns of Hitachi KLA-3B Amino Acid Autoanalyzer. In order to measure the contents of cysteine and methionine, they were synthesized into cysteic acid and methionine sulfone with the aid of performic acid preceeding the process of HCl digestion. The two amino acids were analyzed through only short column. The results obtaimed were generally similar to those published abroad previously. However, some feedstuffs or some amino acids showed a few different figures from foreign data. It seemed that more analysis for each feedstuff would be necessary for deciding whether this difference between home and foreign results be reasonable or not.
사료의 가소화양분에 관한 연구 Ⅷ . 면양에 의한 국내산사료의 소화율검정
김상철 ( S C Kim ),김강식 ( K S Kim ),장윤환 ( Y H Chiang ),신정남 ( C N Shin ) 한국축산학회 1972 한국축산학회지 Vol.14 No.3
Using three heads of sheep for each feedstuff the digestibilites of general compositions in domestic feedstuffs were determined through total collection method. The tested concentrates were fed together with a roughage, of which the digestible nutrients were known in a separate trial. The roughages were fed as a single diet. The minerals and water were provided ad libitum. The tested feedstuffs were; yellowcorn, immature rice, wheat grain, wheat flour, immature barley, naked barley grain, rye grain, soy bean, corn bran, perilla oil meal, linseed oil meal, cocount oil meal, corn starch cake, corn gluten, potato tubers, soy hull, orchard grass hay, mixed pasture grass hay, three kinds of native grass hays, and malt root. The general compositions in tested feedstuffs were expressed on table 1, and their digestibilities and digestible nutrients were recorded on table 3. Some of the tested feedstuffs showed lower values than those published abroad. One of the reasons was thought due to the higher crude fiber content of domestic feedstuffs when compared to foreign data. The other feeds represented similar results to the foreign one. It was thought that, in order to get accurate and representative values in Korea, more replicative experiments should be carried out in the future.