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Surgical Outcomes of Cor Triatriatum Sinister: A Single-Center Experience
김동희,권보상,김동희,최은석,윤태진,박천수 대한심장혈관흉부외과학회 2022 Journal of Chest Surgery (J Chest Surg) Vol.55 No.2
Background: We investigated surgical outcomes after the surgical repair of cor triatriatum sinister (CTS). Methods: Thirty-two consecutive patients who underwent surgical repair of CTS from 1993 through 2020 were included in this study. The morphological characteristics, clinical features, and surgical outcomes were described and analyzed. Results: The median age and body weight at operation were 9 months (interquartile range [IQR], 3–238 months) and 7.5 kg (IQR, 5.8–49.6 kg), respectively. There were 16 males (50%). According to the modified Lucas classification, type IA (classical CTS) was most common (n=20, 62.5%). Atrial septal defect was associated in 22 patients (68.8%) and anomalous pulmonary venous return in 8 patients (25%). Pulmonary hypertension was preoperatively suspected with a high probability in 18 patients (56.3%). There was 1 early death (3.1%) after emergent membrane excision and hybrid palliation in a high-risk hypoplastic left heart syndrome patient. There were no late deaths. The overall survival rate was 96.9% at 15 years post-repair. No early survivors required reoperation during follow-up. Most survivors (31 of 32 patients, 96.9%) were in New York Heart Association functional class I at a median follow-up of 74 months (IQR, 39–195 months). At the latest echocardiography performed at a median of 42 months (IQR, 6–112 months) after repair, no residual lesion was observed except in 1 patient who had moderate pulmonary hypertension (mean pulmonary arterial pressure of 36 mm Hg). Conclusion: Surgical repair of cor triatriatum could be performed safely and effectively with an extremely low risk of recurrence.
로잉 에르고미터 훈련이 남자고등학생의 유산소능력과 근력에 미치는 효과
김동희,육지민,박혁,임재헌,김석환,Kim, Dong-Hee,Yuk, Ji-Min,Park, Hyeok,Lim, Jae-Heon,Kim, Seok-Hwan 대한고유수용성신경근촉진법학회 2018 PNF and Movement Vol.16 No.2
Purpose: This study aimed to assess the effect of rowing ergometer training on the aerobic capacity and strength of male high school students over a 12-week period. Methods: Fourteen high school students volunteered to participate in the study. The subjects were divided into two groups: seven subjects in the experimental group and seven in the control group. The subjects in the experimental group performed rowing ergometer training for 75 min per session at three days a week for 12 weeks. The exercise intensity set the maximum heart rate (HRmax) from 40% to 80%. Aerobic capacity was measured by ventilation, cardiac output, and oxygen intake per body weight. Strength was measured by grip strength and back strength before and after training. Results: A significantly increased ventilation (p=0.01), cardiac output (p=0.01), and oxygen intake per body weight (p=0.00) were found in the experimental group. A significantly increased grip strength in the right and left hands (p=0.00, 0.00) and back strength (p=0.04) were observed in the experimental group. Conclusion: Rowing ergometer training can be an effective combined exercise for aerobic capacity and strength of high school students.
다요인실험계획에서 순서대립가설에 대한 비모수검정법의 연구
김동희,임동훈 한국통계학회 1990 응용통계연구 Vol.3 No.1
본 논문은 둘 이상의 인자들로 구성된 다인자실험계획에서 검정하고자 하는 인자의 순서대립가설에 대한 분포무관인 비모수 검정법을 제안하고 제안된 검정통계량의 점근적 정규성과 기존의 검정법과의 점근상대효율에 대하여 고찰하였다. 또한, 소표본에서 Monte Carlo 연구를 통하여 실험검정력을 비교해 본 결과 두터운 꼬리를 갖는 분포에서는 제안된 검정법이 효율면에서 우수함을 보였다. The objective of this paper is to propose a nonparametric distribution-free test for ordered alternatives in k crossed factor designs by using the concepts of combined factor and within-blocks ranks. We investigate the asymptotic normality of the proposed test statistic and the Pitman efficiencies. We also compared the small empirical powers of the tests considered in this paper by Monte Carlo study. Thus we can conclude that the proposed test is efficient and robust for the underlying distribution.
김동희,김우정,최희숙 한국콩연구회 1991 韓國콩硏究會誌 Vol.8 No.1
우리나라에서 생산되는 장려품종 중 팔달, 단엽, 장백, 백운, 장엽콩과 재래종 중 검정콩, 갈색 아주 까리콩 등 7품종을 대상으로 발아 특성과 가열 중 익힘속도를 비교하였다. 콩나물 뿌리의 성장속도에서는 콩입자가 무거울수륵 성장속도가 느린 경향을 보여 단엽콩이 성장속도가 가장 빨랐으며, 발아율은 단엽콩, 팔달콩이 100% 발아함을 알 수 있었다. 따라서, 콩나물 재배에는 단엽콩이 가장 좋고, 검정콩, 갈색 아주까리콩은 적당치 않은 것으로 판명되었다. 수화시킨 콩을 100℃에서 조리하면서 조리 시간별로 시료의 절단력을 측정한 결과, 품종 중 콩입자의 크기가 큰 갈색 아주까리콩이 가장 낮았으며 입자의 크기가 작은 단엽콩이 가장 높아, 일반적으로 콩입자외 크기가 작고 무게가 적을 수록 절단력이 높은 경향을 보였다. 또한 대체로 단엽콩과 같이 콩입자가 작은 품종보다 입자가 큰 갈색 아주까리콩, 검정콩 등이 익힘속도보다 다소 빠른 것을 알 수 있었다.
확률화 블록 계획법에서 우산형 대립가설에 대한 점근 분포 무관 검정법의 연구
김동희,김현기,이주현 한국통계학회 1996 Communications for statistical applications and me Vol.3 No.3
확률화 블록 계획법에서 우산형 대립가설에 대한 점근 분포 무관 검정법을 제시하고 제안된 검정통계량의 점근적 정규성과 모수적 방법 및 비모수적 방법의 점근상대효율을 관찰하였다. 검점통계량은 블록 효과를 추정하여 제거한 관측치의 전체 블록 순위를 사용하여 제안하였으며 제안된 검정통계량의 소표본 Monte Carlo 연구를 통해 실험 검정력을 비교하였다. 그 결과 본 논문에서 제안된 검정통계량이 꼬리가 두꺼운 분포에서는 전반적으로 우수하고 로버스트한 것으로 나타났다.
김동희,황경섭,조시현 한국추진공학회 2024 한국추진공학회지 Vol.28 No.2
In order to build protective facilities and structures in the defense field, a prior review of the impact of explosion pressure on the structure is necessary, and the protection performance for expected explosion conditions must be satisfied. Accordingly, the Ministry of Defense’s protection design standards have been established and standards for military facilities have been established, but special facilities such as ground combustion test sites are not presented. Therefore, in this study, the protection performance evaluation process of the ground combustion test site protective structure was established and the protection performance evaluation was performed by performing finite element analysis using LS-DYNA to analyze the interaction of explosion pressure.