Reconstruction of a Large Cricotracheal Defect Using a Sternocleidomastoid Myoperiosteal Flap : A Case of Locally Aggressive Papillary Thyroid Carcinoma with Tracheal Invasion

김상민,김미라,김용완,백무진,박준욱,Kim, Sang Min,Kim, Mi Ra,Kim, Yong-Wan,Baek, Moo Jin,Park, Jun-Ook 대한두경부종양학회 2015 대한두경부 종양학회지 Vol.31 No.1

기관을 침범한 갑상선 악성종양을 제거한 후에 성문하부에 비교적 큰 기관 결손이 발생할 수 있다. 단단문합술은 넓은 부위의 결손부를 재건하는 방법으로 널리 받아들여지고 있지만, 문합부 파열, 반회후두신경마비, 재협착 등의 합병증이 발생할 수 있다. 본 증례는 기도를 침범한 갑상선 유두암종을 제거한 후 윤상연골과 기관연골의 비교적 큰 결손부를 흉쇄유돌근 근골막피판을 사용하여 안전하게 재건한 사례이다. 55세 남자 환자가 기도를 침범한 갑상선 유두상암으로 내원하였으며 기도침범은 윤상연골(둘레의 약 30%)과 4개의 기관연골(둘레의 약 50%)을 해당하는 넓은 부위였다. 수술 전 기관절개술을 시행하여 주위 기관연골의 상태가 좋지 않아 단단문합술 시행 후 문합부 파열 가능성이 있다고 판단하여 흉쇄유돌근 근골막피판을 이용하여 재건하기로 계획하였다. 갑상선 절제술, 경부림프절 절제술, 흉쇄유돌근 근골막피판을 이용한 재건술을 시행하였으며 수술 후 12일째 별다른 문제없이 퇴원하였다. 환자는 수술 후 현재 22개월 간 기도 협착 등의 별다른 합병증 없이 지내고 있다. 흉쇄유돌근 근골막피판은 성문하부나 기관지 전외측벽의 비교적 큰 결손부를 재건하는 데 유용하게 사용될 수 있다.

농업용 저수지에서의 환경용수 방류 능력 평가

김상민,김성재,김용완,박태양,김성민,박기욱,장민원,Kim, Sang-Min,Kim, Sung-Jae,Kim, Yong-Wan,Park, Tae-Yang,Kim, Sung-Min,Park, Ki-Wook,Jang, Min-Won 한국농공학회 2011 한국농공학회논문집 Vol.53 No.6

The purpose of this study was to establish the methodology for providing the environmental flows from irrigation reservoir. Reservoir water budget for study area was analyzed to simulate the water supply scenarios for environmental flows. Bonghyun and Hi reservoirs area, located in Gyeongnam, Gosung-gun, Hi-myeon, were selected for study watersheds and streams for this study. Reservoir operation was simulated to determine the envionmental flows supply amount from March to October with the constraint that environmental flow supply was restrained when the storage of reservoir were below the half or one-third of effective storage. The simulated results indicated that the supply of environmental flows with the amount of 200 ton/day and 600 ton/day resulted in up to 15 mm and 29 mm of runoff depth increase in the downstream, respectively. The effect of environmental flows supply from existing irrigation reservoir was not significant because the irrigation reservoir was not designed to supply the environmental flows. It is necessary to remodel the irrigation reservoir and develop the reservoir operation technique, to meet the need for the environmental flows.

Hardware 유역의 수문매개변수 보정을 위한 SWAT-CUP 프로그램의 적용성 평가

김상민,Sang Min, Kim 한국농공학회 2017 한국농공학회논문집 Vol.59 No.3

The purpose of this study was to calibrate the hydrologic parameters of SWAT model and analyze the daily runoff for the study watershed using SWAT-CUP. The Hardware watershed is located in Virginia, USA. The watershed area is $356.15km^2$, and the land use accounts for 73.4 % of forest and 23.2 % of pasture. Input data for the SWAT model were obtained from the digital elevation map, landuse map, soil map and others. Water flow data from 1990 to 1994 was used for calibration and from 1997 to 2005 was for validation. The SUFI-2 module of the SWAT-CUP program was used to calibrate the hydrologic parameters. The parameters were calibrated for the highly sensitive parameters presented in previous studies. The P-factor, R-factor, $R^2$, Nash-Sutcliffe efficiency (NS), and average flow were used for the goodness-of-fit measures. The applicability of the model was evaluated by sequentially increasing the number of applied parameters from 4 to 11. In this study, 10-parameter set was accepted for calibration in consideration of goodness-of-fit measures. For the calibration period, P-factor was 0.85, R-factor was 1.76, $R^2$ was 0.51 and NS was 0.49. The model was validated using the adjusted ranges of selected parameters. For the validation period, P-factor was 0.78, R-factor was 1.60, $R^2$ was 0.60 and NS was 0.57.

오염총량관리를 위한 남강댐유역 BOD 자료의 공간특성 분석

김상민,김성민,박태양,Kim, Sang-Min,Kim, Sung-Min,Park, Tae-Yang 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3

The purpose of this study is to analyze the spatial characteristics of Namgang-Dam watershed for a Total Maximum Daily Loads (TMDL). Three TMDL target sites, Gyeonghogang1, 2, Namgang-Dam2, are located within Namgang-Dam watershed. Under the current criterion for TMDLs, 3-year arithmetic mean BOD concentration of the target sites should not exceed the target concentration for 2 consecutive years. Two and three times of violation were observed for Gyenghogang2 and Namgang-Dam2 sites while no violation was found for Gyeonghogang1 site. However, no violation was found since 1999 for all three sites. Correlation between each 12 stations within the watershed were analyzed and cluster analysis was conducted to figure out the spatial characteristics of the watershed. Correlation coefficient between Gyonghogang1 and 2 was high (0.758) while the coefficients between lake station (Namgang-Dam2) and stream stations (Gyonghogang1 and 2) were very low. Dendrogram indicated that all of three Namgang-Dam stations were very close and Gyenghogang1, 2 stations were also close.

F. Gerald Ham Selecting and Appraising Archivies and Manuscripts (Chicago : The Society of American Archivists, 1993)

김상민,Kim, Sang-Min 한국기록학회 2002 기록학연구 Vol.0 No.5

신경망을 이용한 로버스트 주성분 분석에 관한 연구

김상민,오광식,박희주,Kim, Sang-Min,Oh, Kwang-Sik,Park, Hee-Joo 한국데이터정보과학회 1996 한국데이터정보과학회지 Vol.7 No.1

Principal component analysis(PCA) is an essential technique for data compression and feature extraction, and has been widely used in statistical data analysis, communication theory, pattern recognition, and image processing. Oja(1992) found that a linear neuron with constrained Hebbian learning rule can extract the principal component by using stochastic gradient ascent method. In practice real data often contain some outliers. These outliers will significantly deteriorate the performances of the PCA algorithms. In order to make PCA robust, Xu & Yuille(1995) applied statistical physics to the problem of robust principal component analysis(RPCA). Devlin et.al(1981) obtained principal components by using techniques such as M-estimation. The propose of this paper is to investigate from the statistical point of view how Xu & Yuille's(1995) RPCA works under the same simulation condition as in Devlin et.al(1981).

소강좌 - 밭 비점오염부하저감 및 최적관리기법개발

김상민,박태양,Kim, Sang-Min,Park, Tae-Yang 한국관개배수위원회 2011 한국관개배수회지 Vol.48 No.-

회귀분석을 이용한 지하수 수위 변화 추정

김상민,안병일,Kim, Sang-Min,Ahn, Byeong-Il 한국농공학회 2011 한국농공학회논문집 Vol.53 No.6

The objective of this study is to identify whether or not the ground water level is decreasing. We suggest a method of estimating the change in groundwater level using newly developed groundwater pumping station data. The Goseong area located in Gyeongnam province was selected considering three factors. First, this area demands relatively large amount of irrigation water because most of the land is used as a paddy field and the proportion of the paddy field within total arable land is increasing. Second, groundwater level data in nearby area are available since these are monitored by Water Management Information System (WAMIS). Third, many groundwater pumping stations have been developed in this area in order to overcome droughts thus detail information for pumping stations are available. Regression results indicate groundwater level has been decreased for over 20 years. This decreasing trend is due to the shortage of surface irrigation water which was caused by the decrease in rainfall.

소아 골절의 한약 치료에 대한 최신 중의학 임상 연구 동향 -대조군 연구 논문을 중심으로-

김상민,이진용,이선행,Kim, Sang Min,Lee, Jin Yong,Lee, Sun Haeng 대한한방소아과학회 2018 대한한방소아과학회지 Vol.32 No.1

Objectives The purpose of this study is to analyze the clinical research literature of TCM (traditional Chinese medicine) which is applicable to pediatric fracture and to broaden the field about clinical application of Korean medicine treatment for pediatric fracture. Methods We searched randomized controlled trials about TCM treatment of pediatric fracture from the CNKI (China National Knowledge Infrastructure) January 2013 to December 2017. We searched the literature and analyzed the treatment methods and the results. Results 31 papers were selected from 63 studies. In most studies, the total effective rate of the treatment group was significantly higher than that of the control group, and the bone healing time of the treatment group was significantly lower than that of the control group. Methods of herb treatment include internal medicine (IM), fumigation (FG) and external application (EA). The most commonly used herb medicine were Angelicae Gigantis Radix (當歸), Carthami Flos (紅花), Drynaria Fortunei (骨碎補), Paeonia Lactiflora Pallas (芍藥), Persicae Semen (桃仁), Lycopodii Herba (伸筋草), Ligusticum Chuanxiong Hort (川芎), Olibanum (乳香), Salviae Miltiorrhizae Radix (丹蔘), and Panax Noto Ginseng (三七). Conclusions The use of herb medicine in pediatric fractures has resulted in faster and more effective restoration of fracture union than the Western medical therapy alone. Based on the results of this study, it is possible to widen the scope of Korean medicine if additional clinical studies on pediatric fracture were conducted.

위치기반서비스 이용에 대한 인지된 위험의 영향 연구

김상민,이지은,박찬권,Kim, Sang Min,Lee, Ji-Eun,Park, Chankwon 한국디지털정책학회 2014 디지털융복합연구 Vol.12 No.12

개인정보 관련 사건사고가 증가하면서 개인정보 기반의 모바일 서비스에 대한 우려가 늘고 있다. 본 연구는 스마트폰 보급 확대로 이용이 증가하고 있는 위치기반서비스 앱 이용에 영향을 미치는 요인을 도출하고 이에 대한 인지된 위험의 영향력을 확인하고자 하였다. 이를 위해 위치기반서비스 앱 이용 행위에 영향을 미치는 변수를 도출한 후 인지된 위험이 이들 변수와 앱 이용 행위 사이에 어떤 영향을 미치는가를 실증 분석하였다. 분석 결과, 유용성과 사회적 영향은 위치기반서비스 앱 이용에 영향을 미치나, 인지된 위험을 높게 인식하는 집단은 유용성으로부터, 인지된 위험을 낮게 인식하는 집단은 사회적 영향으로부터 이용 행위에 더 크게 영향을 받는 것으로 나타났다. 위치기반서비스 산업의 성장을 위해서는 인지된 위험의 교섭력을 최소화하기 위한 정보보호 정책과 보호기술이 요구되며 기업 입장에서는 인지된 위험 수준에 따른 개발 전략을 취해야 할 것이다. As the disclosure of privacy information has grown steadily, concerns about mobile services based on the personal information also increased. We aspired to reveal factors influencing the use of Location-Based services(LBS) App and analyse how the perceived risk affected between these factors and the use of LBS App. Results showed that usefulness and social influence influenced on the use of LBS App. We also found that the group who highly recognized the perceived risk was highly affected by usefulness and the group who lowly recognized the perceived risk was highly affected by social influence. Findings show that the company's strategy should be different depending on the level of consumers' perceived risk.