담석을 동반하는 당뇨병환자의 특성에 관한 연구

박준용,박경근,김선미,공미숙,함준수 한양대학교 의과대학 1995 한양의대 학술지 Vol.15 No.1

We investigated the relationship of gallstones in the diabetic patients and analyzed their clinical course and related factors. A collective review of 11,302 diabetic patients from January 1979 to December 1993 were carried out at Hanyang university hospital. Of the 323 cases with gallstones, 180 cases were evaluated for age, body mass index, duration of disease, HbAlc, fasting blood sugar, AST/ALT, cholesterol level and TG level. The result was as follows : 1) The prevalence of gallstones in the diabetics studied was 2.86%. 2) The compostition of the gallstones were not related to age, and pigmented stones were the most commonly seen. 3) The incidence of cholecystectomy was 0.27% in men, and 0.47% in women. The prevalence of gallstones in diabetic patients was higher than in the normal population, which could be explained by the decreased motility of the gallbladder or obesity. However, this study could not find a significant difference in age, body mass index, cholesterol level, and TG level when comparing patients with or with out gallstones.

트랜스포머 모델을 사용한 특징점 학습과 한국어 수어 인식

노경근(Kyunggeun Roh),황의준(Euijun Hwang),이희제(Huije Lee),박종철(Jong C. Park) 한국정보과학회 2023 한국정보과학회 학술발표논문집 Vol.2023 No.6

Sarcomatoid Carcinoma of Common Bile Duct

HwonKyum Park,Kyunggeun Lee,Kwangsoo Lee 한국간담췌외과학회 2010 한국간담췌외과학회 학술대회지 Vol.2010 No.4

상사의 체면손상행위가 부하의 조직시민행동에 미치는 영향

이경근(Lee, Kyunggeun),조용현(Cho,Yonghyeon),박규석(Park Kyuseok) 한국인적자원개발학회 2017 인적자원개발연구 Vol.20 No.1

신뢰도에 기반한 Erlang B Table 보정

박종서(JongSuh Park),안준식(JoonSik Ahn),이경근(KyungGeun Lee),장주욱(JuWook Jang) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1C

얼랑(Erlang) B 이론에 의해 산출된 목표호손율이 보장된 값이라고 믿고 있으나 신뢰도에 따른 분석결과 보장정도가 50%수준 밖에 미치지 못하는 결과를 알 수 있다. 신뢰도라는것은 목표 호손율(Block Rate)을 통해 회선을 산출하였을 때 실측호손율을 어느 비율까지 수용을 할 수 있는지에 대한 기준이다. 신뢰도를 적용한 결과 얼랑 B 이론은 평균에 의해 값을 산출하는 것이 때문에 실측호손율이 얼랑 B 이론에 의해 산출된 호손율 이상일때는 GoS를 100% 보장할 수가 없다. 그러므로 회선산출하는데 있어서 신뢰도를 추가하여 보정된 얼랑B Table을 산출하는 방법을 제시한다.

Laparoscopic Cholecystectomy in Left-Sided Gallbladder

Jun Young Park(박준영),Kyunggeun Lee,Yun Kyung Jung 대한외과학회 2021 대한외과학회 학술대회 초록집 Vol.2021 No.5

반구대 암각화의 주기적인 침수와 구성암석의 풍화 특성

황상일(Sangill Hwang),박경근(Kyunggeun Park),윤순옥(Soon-Ock Yoon) 대한지리학회 2010 대한지리학회지 Vol.45 No.3

반구대 암각화는 울산광역시 울주군 언양읍 대곡리 반구동에 위치하며, 1995년 국보 제285호로 지정되었다. 1965년 사연댐건설 이후 연중 수개월 정도 침수되면서 수분에 의한 풍화작용으로 암각화가 훼손되는 것에 대해 많은 논쟁이 있었다. 본 연구는 반구대 암각화 기반암의 수분등치선도를 작성하여 절리나 박락(剝落) 분포와의 관계를 검토하였다. 반구대 암각화의 함수율은 전체적으로 상부에서 하부로 갈수록 높았다. 이것은 침수된 기간의 길이와 관계된 것이다. 그리고 절리 밀도가 높은 암각화의 상부도 함수율이 높았다. 암석 내 흡수율이 증가하면 투수계수와 공극률이 증가하므로 함수율은 증가한다. 침수로 인해 암석 내에 공극들이 주기적으로 물로 포화되는 반구대 암각화는 수분에 의한 풍화로 훼손이 매우 심각한 상태이다. The Bangudae Petroglyphs locate at Bangudong, Daegok-ri, Eonyang-eup, Ulju-gun, Ulsan and was designated as the No. 285 national treasure since 1995. After the construction of Sayeon-dam in 1965, there were many controversies of the rock weathering problems by the periodic immersion for approximately a few months. The isopleths of water content on the rock are drawn and the result shows relationships between the isopleths and distribution of joints or exfoliations. The distributions of water content rates in the Petroglyphs show the downward increasing pattern. This may suggest that the rates of water content are further influenced by the duration of immersion. Also, the upper part of the Petroglyphs with dense joints shows high rates of water content. If the water content rates in rocks increase, the water absorption rates increase too, because of the increasement of coefficient of permeability and porosity. The weathering damages of the Petroglyphs in which the pores are saturated by the periodic immersion are in the critical conditions.

남해군 금산 정상부의 나마(Gnamma) 지형발달

황상일(Sangill Hwang),박효정(Hyo-Jung Park),박경근(Kyunggeun Park),윤순옥(Soon-Ock Yoon) 대한지리학회 2011 대한지리학회지 Vol.46 No.2

경상남도 남해군 상주리 금산 정상부에 분포하는 나마를 대상으로 형태를 분류하고 지형발달을 조사하였다. 나마의 분포 밀도는 인접한 해안에서 공급되는 염으로 인해 해안과 연하는 암괴들에서 높았다. 또한 나마내 수분값은 나마의 형태에 따라 분포가 달라지며, 나마 바닥에서 높고 바깥쪽에서 가장 낮았다. 화강암과 같은 결정질 기반암에서 나마가 탁월하게 형성되며, 장석류의 풍화로 석영이 탈락하면서 공동이 발생한다. 나마는 성장하면서 주변 나마와 병합하여 확대된다. 나마의 형성속도는 0.04㎜/y로서 초기보다 시간이 지나면서 느려졌다. 풍화속도의 계측 결과는 나마가 과거의 유물지형이나 지중풍화 기원이라기보다 현재에도 형성되고 성장, 확대되고 있음을 지시한다. The types of gnamma at the summit area of Mt. Geum, Sangju-ri, Namhae-gun, Gyeongsangnam-do are classified and geomorphic developments are investigated. The rocks facing the coast show high distributional density of gnamma due to the salt supply from the coast. The water content rate of gnamma distributed in flat rocks at the summit is highest in the bottom area and lowest in the outside area. Moreover, the quartz grains are fallen due to the weathering of feldspar in the crystalline rocks such as granites and the gnamma are merged and expanded as they develop. The average weathering rate of gnamma is 0.04㎜/y and it slowed with time. The results on rate indicate that the gnamma are formed and developed at the present rather than the fossil landform or by subsurface weathering.

Carbon disulfide exposure estimate and prevalence of chronic diseases after carbon disulfide poisoning-related occupational diseases

Hweemin Chung,Kanwoo Youn,Kyuyeon Kim,Kyunggeun Park 대한직업환경의학회 2017 대한직업환경의학회지 Vol.29 No.-

Background: In Korea, Carbon disulfide (CS₂) toxicity was an important social problem from the late 1980s to the early 1990s but there have been few large-scale studies examining the prevalence of diseases after CS₂ exposure discontinuance. So we investigated past working exposure to CS₂ characteristics from surviving ex-workers of a rayon manufacturing plant including cumulative CS₂ exposure index. Furthermore, we studied the prevalence of their chronic diseases recently after many years. Methods: We interviewed 633 ex-workers identified as CS₂ poisoning-related occupational diseases to determine demographic and occupational characteristics and reviewed their medical records. The work environment measurement data from 1992 was used as a reference. Based on the interviews and foreign measurement documents, weights were assigned to the reference concentrations followed by calculation of individual exposure index, the sum of the portion of each time period multiplied by the concentrations of CS₂ during that period. Results: The cumulative exposure index was 128.2 ppm on average. Workers from the spinning, electrical equipment repair, and motor repair departments were exposed to high concentrations of ≥10 ppm. Workers from the maintenance of the ejector, manufacturing of CS₂, post-process, refining, maintenance and manufacturing of viscose departments were exposed to low concentrations below 10 ppm. The prevalence for hypertension, coronary artery disease, cerebrovascular disease, diabetes, arrhythmia, psychoneurotic disorder, disorders of the nervous system and sensory organ were 69.2%, 13.9%, 24.8%, 24.5%, 1.3%, 65.7%, 72.4% respectively. Conclusions: We estimated the individual cumulative CS₂ exposure based on interviews and foreign measurement documents, and work environment measurement data. Comparing the work environment measurement data from 1992, these values were similar to them. After identified as CS₂ poisoning, there are subjects over 70 years of average age with disorders of the nervous system and sensory organs, hypertension, psychoneurotic disorder, cerebrovascular disease, diabetes, coronary artery disease, and arrhythmia. Because among ex-workers of the rayon manufacturing plant, only 633 survivors recognized as CS₂ poisoning were studied, the others not identified as CS₂ poisoning should also be investigated in the future.

경주시 소금강산 굴불사지석불상의 풍화 특성

윤순옥(Soon-Ock Yoon),박경근(Kyunggeun Park),황상일(Sangill Hwang) 대한지리학회 2012 대한지리학회지 Vol.47 No.6

우리나라 지정문화재 가운데 석조문화재는 양적이나 질적인 면에서 매우 높은 비중을 차지한다. 1935년 보물 제121호로 지정된 굴불사지석불상은 경상북도 경주시 동천동 소금강산 남서사면에 위치하며, 바위 네 면에 불상이 각각 조각되어 있다. 이들 석불상의 훼손상태는 암석의 풍화정도에 기인하며 수분분포와 높은 상관관계를 나타낸다. 굴불사지석불상의 함수율은 동면(0.5~0.7%), 북면(0.5~0.65%), 남면(0.3~0.5%), 서면(0.2~0.35%)의 순이며 사면방향에 따른 일조시간에 비례한다. 또한 절리의 분포 밀도가 높은 곳, 보수 물질로 충진된 곳, 그리고 지의류가 피복된 곳에서 함수율이 높고 풍화에 따른 훼손정도가 심하다. Stone cultural heritages quantitatively as well as qualitatively occupy a large proportion in the designated heritages in Korea. The Stone Buddha statue in the Gulbulsa temple site, designated as the No. 121 treasure in 1935, is located in the southwestern slope of Mt. Sogeumgang, Dongcheon-dong, Gyeongju-si, Gyeongbuk Province and Buddhist images are sculptured on four sides of a 3.5m-tall gigantic rock. The damage states result from the weathering degree and indicate high correlation with the water contents. The water contents in the Stone Buddha of Gulbulsa temple site are highest at the east side and then decrease in order of north, south and west sides. These are proportional to the durations of sunshine. Moreover, the Stone Buddha of Gulbulsa temple site with dense joints, repaired areas and vegetated areas by lichens shows high water contents and damage states.