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인자분석을 통한 다성분 혼합물의 정성 및 정량분석(I) - 2성분계 혼합물의 적외선 스펙트럼으로부터 객관적인 피크 뺄셈을 통한 순수성분 스펙트럼의 분리 -
김갑진,배준형 한국섬유공학회 1996 한국섬유공학회지 Vol.33 No.12
Two conventional minimization criteria such as entropy minimization and path minimization and newly suggested exponential minimization criterion have been tested in extracting each pure component spectrum from two binary mixture infrared absorption spectra via spectrum subtraction. Entropy minimization criterion is based on the fact that the entropy reaches minimum value when a correct scale factor is obtained during subtraction procedure, and path minimization criterion is based on the fact that the path reaches minimum value when a correct scale factor is obtained. Exponential minimization criterion is based on the fact that the minimum value of the total summation of absolute valuta of residuals is obtained for a correct scale factor when two types of exponential curves are fitted to the difference spectrum in a specific range obtained during interactive subtraction procedure. In the case of very closely overlapped characteristic peaks present in spectra, satisfactory results have not been obtained in extracting each pure spectrum on the basis of conventional minimization criteria. Exponential minimization chiterion, however, newly suggested in this study was proved to be a good objective candidate on peak subtraction, even though very closely overlapped characteristic peaks exist in spectra.
김갑진,허유,류운영 慶熙大學校 1980 論文集 Vol.10 No.-
In this study, it was tried to obtain the data about wool quality continued to the prior publication, some physical and chemical properties of wool from Jae Ju-Do in Korea where there have been bred about 1300 sheep of Romneymarsh and Corriedale were examined. The results, tested and analyzed, are as the followings. The scouring yield of wool from Jae Ju-Do is about 75%, which is higher than that of Australian wool and UnBong Wool. The quality number is 48's for Romneymarsh and 56's for Corriedale. The thickness is comparatively even. The content of cystine and cysteine is 524-532 μ mole/g which is approximately equal to that of Australian Merino wool and greatly higher than that of UnBong Wool. The above results suggest that Jae Ju-Do can be developed as a wool producing district in Korea.
김갑진,안재민 항법시스템학회 2021 Journal of Positioning, Navigation, and Timing Vol.10 No.1
Most existing studies on the wide-area differential global positioning system (WADGPS) used standard positioning service (SPS) receivers in their observation reference stations which provide the central control station global positioning system (GPS) measurements to generate augmentation data. In the present study, it is considered to apply a precise positioning service (PPS) receiver to an observation reference station which is located in the threatened jamming area. Therefore, the reference station network consists of a PPS receiver based observation reference station and SPS receiver based observation reference stations. In this case, to maintain correction performance P1C1 differential code bias (DCB) should be compensated. In this paper, P1C1 DCB estimation algorithm was applied to the PPS/WADGPS system and performance test results using measurements in the Korean Peninsula were presented.