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Learning curves for single incision and conventional laparoscopic right hemicolectomy
Yoonah Park,Yuen Geng Yong,Seong Hyeon Yun,Kyung Uk Jung,Jung Wook Huh,Yong Beom Cho,Hee Cheol Kim,Woo Yong Lee,Ho-Kyung Chun 대한외과학회 2015 Annals of Surgical Treatment and Research(ASRT) Vol.88 No.5
Purpose: This study aimed to compare the learning curves and early postoperative outcomes for conventional laparoscopic (CL) and single incision laparoscopic (SIL) right hemicolectomy (RHC). Methods: This retrospective study included the initial 35 cases in each group. Learning curves were evaluated by the moving average of operative time, mean operative time of every five consecutive cases, and cumulative sum (CUSUM) analysis. The learning phase was considered overcome when the moving average of operative times reached a plateau, and when the mean operative time of every five consecutive cases reached a low point and subsequently did not vary by more than 30 minutes. Results: Six patients with missing data in the CL RHC group were excluded from the analyses. According to the mean operative time of every five consecutive cases, learning phase of SIL and CL RHC was completed between 26 and 30 cases, and 16 and 20 cases, respectively. Moving average analysis revealed that approximately 31 (SIL) and 25 (CL) cases were needed to complete the learning phase, respectively. CUSUM analysis demonstrated that 10 (SIL) and two (CL) cases were required to reach a steady state of complication-free performance, respectively. Postoperative complications rate was higher in SIL than in CL group, but the difference was not statistically significant (17.1% vs. 3.4%). Conclusion: The learning phase of SIL RHC is longer than that of CL RHC. Early oncological outcomes of both techniques were comparable. However, SIL RHC had a statistically insignificant higher complication rate than CL RHC during the learning phase.
Normal pressure hydrocephalus after gamma knife radiosurgery in a patient with vestibular schwannoma
Park Yoonah,Yoo Bong-Goo,Jeong Seonghun,이원구,김명국,Huh So-Young,Lee Jin-Hyung 대한신경집중치료학회 2020 대한신경집중치료학회지 Vol.13 No.2
Background: Vestibular schwannoma is a benign, usually slow-growing tumor, which develops from Schwann cells of the eighth cranial nerve. Case Report: The treatment options for the schwannoma are surgical removal or gamma knife radiosurgery. The treatment of choice depends on the size of the tumor and the level of hearing in the affected ear. After gamma knife radiosurgery, there may be some neurological complications including headache, dizziness, motor or cranial nerve deficits, seizure, carotid artery stenosis, and increased intracranial pressure. Hydrocephalus is a rare complication of gamma knife radiosurgery for vestibular schwannoma. Conclusion: Here, we report a case of normal pressure hydrocephalus after gamma knife radiosurgery in a patient with vestibular schwannoma.
Development of Primitive Motion Library for Kinetic Typography Rendering Engine
YoonAh Cho,JooHyun Park,Soon-Bum Lim 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.3
Kinetic Typography Rendering Engine contains Primitive Motion Library to convey the emotions. It wraps essential elements such as time, space and speed to express movement. Scrutinized primary movement is constituted as Primitive Motion Library and it is a way to kinetic typography properly. The main purpose of Primitive Motion Library substitutes the existing method to manufacture kinetic typography; such as using software and doing expert coding. To achieve this purpose, the thesis is separating the movement, classifying it systematically and developing Primitive Motion API which renders Kinetic typography.
Yoonah Jang,Yun-Chan Huh,Dong-Kum Park,Boheum Mun,Sanggyu Lee,Yeongcheol Um 한국원예학회 2014 원예과학기술지 Vol.32 No.5
Melons (Cucumis melo L.) are generally grafted onto Cucurbita rootstocks to manage soilborne pathogens such as Monosporascus root rot and v ine decline (MRR/VD ) and Fusarium wilt. However, g rafting onto Cucurbita rootstocks reportedly results in the reduction of fruit quality. In this study, the resistance to MRR/VD, yield, and fruit quality of melons grafted onto melon rootstocks were evaluated under greenhouse conditions. Eight melon rootstocks (R1 to R8) were used and the inodorus melon ‘Homerunstar’ was used as scion. Melon rootstocks R1 to R6 were selected based on resistance to MRR/VD under greenhouse conditions. Non-grafted ‘Homerunstar’ and plants grafted onto squash interspecific hybrid ‘Shintozwa’ rootstock (Cucurbita maxima D. × C. moschata D.) served as controls. Grafted melons were cultivated in the greenhouse infested with Monosporascus cannonballus during two growing seasons (summer and autumn). The responses to MRR/VD, yield, and fruit quality differed depending on the rootstocks and growing season. The melons grafted onto ‘Shintozwa’ exhibited less severe disease symptoms and higher survival rates than non-grafted melons in both seasons. While the melon rootstocks in the summer cultivation did not increase the survival rate compared to non-grafted melons, the melon rootstocks R1 and R2 in the autumn cultivation led to higher survival rates. The melon rootstocks resistant to MRR/VD increased the percentage of marketable fruits and marketable yields. Grafting onto the melon rootstocks caused little or no reduction of fruit quality such as low calcium content, fruit softening, and vitrescence, especially in lower-temperature autumn season. Accordingly, these results suggest that grafting onto the melon rootstocks may increase the tolerance to MRR/VD and the marketable yield without a reduction of fruit quality.