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예측알고리즘 적용을 위한 데이터세트 구성이 근적외선 분광광도계를 이용한 옥수수 품질평가에 미치는 영향
최성원,이창석,박창희,김동희,박성권,김법균,문상호,Choi, Sung-Won,Lee, Chang-Sug,Park, Chang-Hee,Kim, Dong-Hee,Park, Sung-Kwon,Kim, Beob-Gyun,Moon, Sang-Ho 한국축산환경학회 2014 한국축산시설환경학회지 Vol.20 No.3
The objectives were to assess the use of near-infrared reflectance spectroscopy (NIRS) as a tool for estimating nutrient compositions of corn kernel, and to apply an NIRS-based indium gallium arsenide array detector to the system for collecting spectra and analyzing calibration equations using equipments designed for field application. Partial Least Squares Regression (PLSR) was employed to develop calibration equations based on representative data sets. The kennard-stone algorithm was applied to induce a calibration set and a validation set. As a result, the method for structuring a calibration set significantly affected prediction accuracy. The prediction of chemical composition of corn kernel resulted in the following (kennard-stone algorithm: relative) moisture ($R^2=0.82$, RMSEP=0.183), crude protein ($R^2=0.80$, RMSEP=0.142), crude fat ($R^2=0.84$, RMSEP=0.098), crude fiber ($R^2=0.74$, RMSEP=0.098), and crude ash ($R^2=0.81$, RMSEP=0.048). Result of this experiment showed the potential of NIRS to predict the chemical composition of corn kernel.
단안 상사근 마비와 동반된 수평 사시의 특징 및 치료 예후
최성원,정세환,라상훈,Sung Won Choi,Se Hwan Jung,Sang Hoon Rah 대한안과학회 2007 대한안과학회지 Vol.48 No.3
Purpose: To review the clinical characteristics and treatment outcomes in horizontal strabismus combined with unilateral superior oblique palsy (SOP). Methods: A retrospective review of medical records was conducted in 21 patients with unilateral SOP treated between January 2001 and December 2005. Patients had more than 6 months of follow-up at the Department of Ophthalmology, Wonju College of Medicine. Results: Among 21 patients (11 male, 10 female) with unilateral SOP, 57.1% of patients had horizontal strabismus. The mean vertical deviation was 12.56±3.81 (8~24) PD. All patients with horizontal strabismus had exotropia and the mean deviation was 10.57±4.58 (6~20) PD. A standard 10mm inferior oblique (IO) recession was performed uniformly at the paretic eye in all patients. In 7 of the patients (58.3%, exotropia greater than or equal to 10PD), horizontal rectus muscle recession was performed simultaneously. In these 7 cases, vertical and horizontal deviation less than or equal to 4PD was achieved (one patient with 10PD remaining hypertropia excluded). In 5 cases with exodeviation less than 10PD, isolated IO recession without horizontal rectus recession on the ipsilateral side achieved orthophoria in the primary position. In 9 cases of isolated SOP, all patients showed orthophoria in the primary position. Conclusions: This study demonstrates horizontal strabismus is combined with unilateral SOP in a high percentage of patients. Additionally, in all cases, all the incidents of horizontal deviation was involved exotropia. A standard 10 mm recession of the IO in combination with horizontal rectus recession is an effective surgical technique. It has an especially high success rate in patients with unilateral SOP (≤14PD vertical deviation) with exodeviation greater than 10PD. In patients with exodeviation less than 10PD, an isolated IO recession is sufficiently effective.
비후성 반흔 각질세포와 정상 각질세포의 유전자 비교분석
최성원,정호윤,임영국,김훈남,오지원,김문규,전세화,홍용택,Choi, Sung-Won,Chung, Ho-Yun,Lim, Young-Kook,Kim, Hoon-Nam,Oh, Ji-Won,Kim, Moon-Kyu,Jeon, Sae-Hwa,Hong, Yong-Taek 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.4
Purpose: There is no clear evidence of the original cause of hypertrophic scar, and the effective method of treatment is not yet established. Recently the steps of searching in gene and molecular level are proceeding. we are trying to recognize the difference between keratinocytes of hypertrophic scar and normal skin. Then we do support the comprehension of the scar formation mechanism and scar management. Methods: Total RNAs were extracted from cultured keratinocytes from 4 hypertrophic scars and normal skins. The cDNA chips were prepared. A total of 3063 cDNAs from human cDNA library were arrayed. And the scanning data were analyzed. Results: On microarray, heat shock protein, pyruvate kinase, tumor rejection antigen were more than 2 fold intensity genes. Among them, heat shock 70 kd protein showed the strongest intensity difference. Conclusion: In this study, it can be concluded that heat shock proteins play an important role in the process of wound healing and scar formation. This study provides basic biologic information for scar research. The new way of the prevention and treatment of scar formation would be introduced with further investigations.
최성원,김유철.Sung Won Choi. MD. Yu Cheol Kim. MD 대한안과학회 2014 대한안과학회지 Vol.55 No.4
Purpose: To report a case of lipemia retinalis in a patient with diabetes. Case summary: A 27-year-old female with type 2 diabetes visited our clinic with visual disturbance in her left eye while being followed up from a pars plana vitrectomy in her right eye for proliferative diabetic retinopathy. On fundus examination of both eyes, the retinal vessels were creamy white and the retinal veins were undistinguishable from the retinal arteries. The serum triglyceride level was 2,676 mg/dL. The patient was asymptomatic except for visual impairment due to vitreous hemorrhage in her left eye. The patient was diagnosed with lipemia retinalis and chylomicronemia syndrome. After controlling the triglyceride level, funduscopic findings in the both eyes were improved. However, the visual acuity in her right eye remained unchanged. Conclusions: Lipemia retinalis can be a sign of a systemic condition although it may not affect visual acuity. Fundus examination may be a useful tool in the early diagnosis of hyperlipidemia. J Korean Ophthalmol Soc 2014;55(4):623-627
최성원,김광수,김유철,Sung Won Choi,MD,Kwang Soo Kim,MD,Yu Cheol Kim,MD 대한안과학회 2014 대한안과학회지 Vol.55 No.12
Purpose: To investigate the risk factors and the factors affecting surgical and visual outcomes of rhegmatogenous retinal detachment in patients under 40 years of age. Methods: This retrospective study included 88 patients (96 eyes) diagnosed with rhegmatogenous retinal detachment that were followed up for more than 3 months postoperatively. Patients were categorized into 3 groups according to age. The etiologic risk factors and the primary anatomical and functional success rates were analyzed. Preoperative factors that could affect postoperative visual acuity and primary anatomical outcome, such as subretinal strands and proliferative vitreoretinopathy (grade C or worse), were analyzed. Results: Myopia more severe than -4.0 diopters was the most common predisposing factor in all 3 groups. Anatomical success rates and functional success rates were not significantly different among the groups. Prevalence of macular detachment and proliferative vitreoretinopathy were highest in group 1. The presence of subretinal strands was highest in group 2 and proliferative vitreoretinopathy was highest in group 1. Patients with preoperative subretinal strands showed a lower primary anatomical success rate in group 1 and poor postoperative visual acuity in groups 1 and 2. Patients with proliferative vitreoretinopathy had poor postoperative visual acuity however there was no significant difference in primary anatomical success rate among the groups.Conclusions: Proliferative vitreoretinopathy did not affect the anatomical success rate but did affect visual outcome in rhegmatogenous retinal detachment in patients under age 40. Subretinal strands contributed to a lower anatomical success rate and poorer visual outcome in such patients that were under age 18. J Korean Ophthalmol Soc 2014;55(12):1808-1813
최성원(SW Choi),정욱(W Jeong),백용찬(YC Baik),지정희(CH Chi),김철(C Kim) 대한산부인과학회 1987 Obstetrics & Gynecology Science Vol.30 No.8
저자들은 최근 17세인 미산부에서 발생한 혼합성배세표종(mixed germ cell tumor)의 1예를 경험하였기에 문헌적 고찰과 함께 보고하는 바이다. a case of malignant mixed cell tumor in 17 years old unmarried woman, is presented with a brief review of concerned literature.
대학 학습 팀 내 갈등과 팀 효과성에 관한 연구 : 정서지능의 조절효과를 중심으로
최성원(Choi Sungwon) 학습자중심교과교육학회 2021 학습자중심교과교육연구 Vol.21 No.9
목적 본 연구는 대학 팀 학습 중 발생하는 과업 및 관계 갈등과 팀원 정서지능의 영향을 팀 효과성 측면에서 고찰하였다. 방법 총 101명의 대학생이 한 학기 동안 팀 프로젝트 활동에 참여하여 상호 평가와 연구 설문에 응답하였다. 결과 팀별 성과가 높았던 팀은 상대적으로 적은 관계 갈등을 경험하고 있었으며 소속 팀원들의 정서지능이 유의미하게 더 높았다. 팀원 상호 평가에 있어서는, 두 가지 갈등과 정서지능 사이에 조절효과가 확인되었다. 정서지능이 높을 경우, 과업 및 관계 갈등 상황 모두애서 유의미하게 긍정적인 팀원 상호 평가를 받음이 드러났다. 결론 이는 팀에서 과업 및 관계 갈등을 빚더라도 정서지능이 높은 개인의 경우 그 효과를 무마하거나 오히려 긍정적 방향으로 활용할 수 있는 능력이 있음을 시사한다. 또한 그러한 정서적 능력은 전체적으로 팀 성과를 향상시키는데 기여하고 있음을 알 수 있다. 이에 팀 활동 및 팀 학습에 대한 시사점과 향후 연구 과제를 다루었다. Objectives This study attempts to understand the role of emotional intelligence (EI) in relations to both types of conflict (i.e., task and relationship conflict)and team effectiveness (i.e., team performance and peer evaluation). Methods A total of 101 college students in 19 project teams completed a semester-long study. Results The major finding is that high performance teams demonstrated significant relations with low level of relationship conflict and high level of EI, but not with task conflict. Team-member’s EI moderates the relationship between both types of conflict and team-member peer evaluation, such that the relationship was significantly more positive with individuals with high EI. Conclusions Team members with high EI are more capable of coping with conflict situation in a constructive way, and this in turn increases team effectiveness. Implication and future direction are discussed.