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확률분포모형을 이용한 하루살이속(Ephemera) 4종에 대한 화학적 수질 적합도지수 평가
정봉준,공동수 한국물환경학회 2023 한국물환경학회지 Vol.39 No.6
Chemical water quality suitability for species (Ephemerastrigata, Ephemer. separigata, and Ephemeraorientalis-sachalinensisgroup) of the mayfly genus Ephemera(Order Ephemeroptera) was analyzed with probability distribution models (Exponential, Normal, Lognormal, Logistic, Weibull, Gamma, Beta, Gumbel).Data was collected from 23,957 sampling units of 6,664 sites in Korea from 2010 to 2021. E. orientalis-sachalinensisoccurred at the range of BOD5 0.3~11.1 mg/L (the best-fit Lognormal model); T-P 0.007~0.769 mg/L (the Gumbel model); TSS 0.4~142.2 mg/L (the Lognormal model). E. strigataoccurred at the range of BOD50.4~7.4 mg/L (the Gumbel model); T-P 0.007~0.254 mg/L (the Lognormal model); TSS 0.4~17.1 mg/L (the Lognormal model). E. separigataoccurred at the range of BOD5 0.4~2.6 mg/L (the R-Weibull model); T-P 0.007~0.134 mg/L (the Lognormal model); TSS 0.7~10.0 mg/L (the Lognormal model). Habitat suitability range of E. orientalis-sachalinensiswas estimated to be 0.4~1.9 mg/L (BOD5), 0.024~0.086 mg/L (T-P), 2.5~22.4 mg/L (TSS); that of E. strigatawas0.4~0.7 mg/L (BOD5), 0.007~0.018 mg/L (T-P), 0.0~1.7 mg/L (TSS); that of E. separigatawas0.0~0.4 mg/L (BOD5), 0.000~0.015 mg/L (T-P), 0.5~3.1 mg/L (TSS). In a relative comparision, E. orientalis-sachalinensiswas estimated to be eurysaprobic, and narrowly adapted in high levels of T-P and TSS, E. strigatawas estimated to be oligosaprobic and adapted in low levels of T-P and TSS, and E. separigatawas estimated to be stenooligosaprobic and widely adapted in low level of T-P and TSS.
정봉준,김명섭,이태영 大韓顎顔面成形再建外科學會 1990 Maxillofacial Plastic Reconstructive Surgery Vol.12 No.2
Patients with facial paralysis, in whom nerve damage is irreparable or in whom the innervation of the paralyzed musculature cannot be restored by nerve suture, grafting, or cross-face nerve transplantation, should be offered some form of reconstructive static and dynamic aid. Temporalis muscle-fascia unit used as a circumorbital sling and motor unit is a dynamic controlled reconstructive procedure, but it has several disadvantages such as wide surgical exposure, bulky-looking at lateral canthal area, insufficient voluntary control. This is a case report of facial palsy of posttraumatic lagophthalmos of 41-year-old male, which was corrected by temporallis muscle-tendon transfer with plantaris tendon transplantation.
정봉준(Jeong Bong Jun),최준섭(Choe Jun Seob),정동양(Jeong Dong Yang) 대한공업교육학회 2003 대한공업교육학회지 Vol.28 No.1
The Purpose of this study was to find the problems in the management and in the actual conditions of practice classes of the field of machinery at the girls` technical high schools. And the targets of this research was restricted the sophomore girl-students in the three girls` technical high schools in Korea. With them, the research data were made the questionnaire poll by the thirty questions of five field, consulted with a group of experts in this field. The surveyed data was analyzed by the SPSS/Win(Ver. 11.0) program with 0.05 significance level. The main results of this research were as follows: (1) The students of girls` technical high schools were replied to the field of machinery in the future, 77.1% of them answered with having a bright prospect. (2) 56.2% of the girl students thought that the learning contents of the practice classes were currently proper in the trend of engineering development, and 42.6% of them recognized in considering of girl students in making the curriculum of practical job. (3) 40.6% of the students expressed not to finish the assigned practice job. And also 54.5% of the girl students did not have the drilling basic practice class. (4) 43.5% of the students pointed out that the subject of the mechanical technology was not helpful to CNC lathe working or milling machine. (5) 35.2% of the students answered that they didn`t consult with their teacher or modify their designs to solve the given problem in the practice classes. 35.5% of them answered that they utilized the sketching and drawing in solving problems occurred to the practice classes.