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Lee, Sunmin,Kim, Jeong-Cheol,Jung, Hyung-Sup,Lee, Moung Jin,Lee, Saro Informa UK (TaylorFrancis) 2017 Geomatics, natural hazards and risk Vol.8 No.2
<P>Since flood frequency increases with the impact of climate change, the damage that is emphasized on flood-risk maps is based on actual flooded area data; therefore, flood-susceptibility maps for the Seoul metropolitan area, for which random-forest and boosted-tree models are used in a geographic information system (GIS) environment, are created for this study. For the flood-susceptibility mapping, flooded-area, topography, geology, soil and land-use datasets were collected and entered into spatial datasets. From the spatial datasets, 12 factors were calculated and extracted as the input data for the models. The flooded area of 2010 was used to train the model, and the flooded area of 2011 was used for the validation. The importance of the factors of the flood-susceptibility maps was calculated and lastly, the maps were validated. As a result, the distance from the river, geology and digital elevation model showed a high importance among the factors. The random-forest model showed validation accuracies of 78.78% and 79.18% for the regression and classification algorithms, respectively, and boosted-tree model showed validation accuracies of 77.55% and 77.26% for the regression and classification algorithms, respectively. The flood-susceptibility maps provide meaningful information for decision-makers regarding the identification of priority areas for flood-mitigation management.</P>
Lee, Sunmin,Lee, Sarah,Singh, Digar,Oh, Ji Young,Jeon, Eun Jung,Ryu, Hyung SeoK,Lee, Dong Wan,Kim, Beom Seok,Lee, Choong Hwan Elsevier 2017 Food chemistry Vol.221 No.-
<P><B>Abstract</B></P> <P>Two different <I>doenjang</I> manufacturing processes, the industrial process (IP) and the modified industrial process (mIP) with specific microbial assortments, were subjected to metabolite profiling using liquid chromatography-mass spectrometry (LC-MS) and gas chromatography time-of-flight mass spectrometry (GC-TOF-MS). The multivariate analyses indicated that both primary and secondary metabolites exhibited distinct patterns according to the fermentation processes (IP and mIP). Microbial community analysis for <I>doenjang</I> using denaturing gradient gel electrophoresis (DGGE), exhibited that both bacteria and fungi contributed proportionally for each step in the process viz., soybean, steaming, drying, <I>meju</I> fermentation, cooling, brining, and aging. Further, correlation analysis indicated that <I>Aspergillus</I> population was linked to sugar metabolism, <I>Bacillus</I> spp. with that of fatty acids, whereas <I>Tetragenococcus</I> and <I>Zygosaccharomyces</I> were found associated with amino acids. These results suggest that the components and quality of <I>doenjang</I> are critically influenced by the microbial assortments in each process.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The mIP showed similar metabolite profiles compared to IP despite reduced time. </LI> <LI> Microbial assortments regulate differential metabolite profiles in each process. </LI> <LI> <I>Doenjang</I> quality was synchronous with microbial metabolic diversity. </LI> </UL> </P>
Metabolomics Reveal Optimal Grain Preprocessing (Milling) toward Rice <i>Koji</i> Fermentation
Lee, Sunmin,Lee, Da Eun,Singh, Digar,Lee, Choong Hwan American Chemical Society, Books and Journals Divi 2018 Journal of agricultural and food chemistry Vol.66 No.11
<P>A time-correlated mass spectrometry (MS)-based metabolic profiling was performed for rice <I>koji</I> made using the substrates with varying degrees of milling (DOM). Overall, 67 primary and secondary metabolites were observed as significantly discriminant among different samples. Notably, a higher abundance of carbohydrate (sugars, sugar alcohols, organic acids, and phenolic acids) and lipid (fatty acids and lysophospholipids) derived metabolites with enhanced hydrolytic enzyme activities were observed for <I>koji</I> made with DOM of 5-7 substrates at 36 h. The antioxidant secondary metabolites (flavonoids and phenolic acid) were relatively higher in <I>koji</I> with DOM of 0 substrates, followed by DOM of 5 > DOM of 7 > DOM of 9 and 11 at 96 h. Hence, we conjecture that the rice substrate preprocessing between DOM of 5 and 7 was potentially optimal toward <I>koji</I> fermentation, with the end product being rich in distinctive organoleptic, nutritional, and functional metabolites. The study rationalizes the substrate preprocessing steps vital for commercial <I>koji</I> making.</P> [FIG OMISSION]</BR>
이세영(Seyoung Lee),이선민(Sunmin Lee),이용우(Yongwoo Lee),이제희(Jehee Lee) 한국컴퓨터그래픽스학회 2021 한국컴퓨터그래픽스학회 학술대회 Vol.2021 No.7
우리는 단일 모션 클립에서 매개 변수화된 모션 집단을 학습하는 새로운 알고리즘을 제시한다. 각 동작은 심층정책 네트워크로 표현되며, 연속적인 동작 공간을 탐색하여 사용자 입력 및 환경 상호 작용에 대응하여 물리 시뮬레이션 상에서 모션을 생성한다. 모션 매개 변수화와 동작 추적의 동시 학습은 학습된 모터 기술의 성능과 시각적 품질을 크게 향상시킨다. 우리는 매우 역동적인 동작들을 작업 목표, 신체 비율, 물리적 수치 및 환경 조건에 대해 매개 변수화하여서 알고리즘의 유연성을 입증했다.
Lee, Sumin,Lee, Sang-wook,Park, Sunmin,Yoon, Sang Min,Park, Jin-hong,Song, Si Yeol,Ahn, Seung Do,Kim, Jong Hoon,Choi, Eun Kyung,Kim, Su Ssan,Jung, Jinhong,Kim, Young Seok The Korean Society for Radiation Oncology 2017 Radiation Oncology Journal Vol.35 No.3
Purpose: To validate the 8th edition of the American Joint Committee on Cancer/Union for International Cancer Control (AJCC/UICC) TNM staging system for human papillomavirus (HPV)-related oropharyngeal squamous cell carcinoma (OPSCC) and investigate whether a modified classification better reflects the prognosis. Materials and Methods: Medical records of patients diagnosed with non-metastatic HPV-related OPSCC between 2010 and 2016 at a single institution were retrospectively reviewed. HPV status was determined by immunohistochemical analysis of p16 and/or HPV DNA polymerase chain reaction (PCR). We reclassified TNM stage T0-1 and N0-1 as group A, T2-3 or N2 as B, and T4 or N3 as C. Survival analysis according to 8th AJCC/UICC TNM staging and the modified classification was performed. Results: Of 383 OPSCC patients, 211 were positive for HPV DNA PCR or p16. After exclusion, 184 patients were included in this analysis. Median age was 56 years (range, 31 to 81 years). Most primary tumors were in the palatine tonsil (148 tumors, 80%). The eighth AJCC/UICC TNM classification could not differentiate between stage I and II (p = 0.470) or II and III (p = 0.209). Applying modified grouping, the 3-year overall survival rate of group A was significantly higher than that of group B and C (98% vs. 91%, p = 0.039 and 98% vs. 78%, p < 0.001, respectively). Differentiation between group B and C was marginally significant (p = 0.053). Conclusion: The 8th AJCC/UICC TNM staging system did not clearly distinguish the prognosis of stage II from that of other stages. Including the T2N0-1 group in stage II may improve prognostic stratification.
Sunmin Lee,Taejung Song,Moung-Jin Lee 대한원격탐사학회 2019 大韓遠隔探査學會誌 Vol.35 No.1
As inter-Korean relations progress, the issue of natural disasters which could directly affect the lives of the people in both Koreas, has not yet been discussed. Considering the current status of inter-Korean relations and the ongoing disaster-related damage in North Korea, it is imperative to establish a technical plan at the pangovernmental level to reduce the damage from natural disasters. The purpose of this study is to secure the Korea Peninsula against natural disasters by organizing South Korea’s science and technologies related to natural disasters in order to reduce the damage, and to evaluate the applicability of said technologies. The situation of natural disasters in North Korea for 17 years has been summarized and reclassified based on eight types of natural disasters. Technologies related to natural disasters in South Korea were also investigated and reclassified. Based on the data, a priority evaluation was performed and the prioritization of technology application for each natural disaster type in North Korea was calculated through a quadrant analysis. As a result, the three major categories of high-priority technologies were classified as natural disaster monitoring with remote sensing and spatial information technology, construction of research basis and database based on geographic information system (GIS) and integrated management of complex natural disasters.
A case of inverted type a (clonal) nevus
( Sunmin Yim ),( Hyeon Jeong Park ),( Junghwa Yang ),( Yunho Lee ),( Jung Yup Kim ),( Jae Yun Lim ),( Young Jun Choi ),( Jae-hui Nam ),( Ga-young Lee ),( Won-serk Kim ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Inverted type A (clonal) nevus is a unusual type of melanocytic nevus. It contains pigmented nests of type A nevus cells in the depth of a banal. The nest is occasionally surrounded by type B or C nevus cells. Therefore, type A nevus cells are layered in deeper portion of nevus and Type B and C nevus cells are observed on superficial layers. An unusual presentation of inverted type A nevus have been rarely reported with superficial neurotization. We described a case of a 68 year-old female complained of solitary, 0.4 cm-sized, dome shaped, brownish to skin-colored papule on the occiput. There was no pruritus or pain on the lesion. The excision biopsy was performed. The histology examination revealed clustered, swirling, epithelioid, type A nevus cells proliferation in the deep portion of perifollicular area. The dense, basophilic type B nevus cells were surrounding the nests of type A cells. Moreover, extensive neurotized type C nevus cells appeared in the upper dermis. No atypia and abnormal mitosis were observed. It could be diagnosed with inverted type A nevus based on the clinical and histological findings.
( Sunmin Yim ),( Junghwa Yang ),( Yun Ho Lee ),( Jung Yup Kim ),( Jae Yun Lim ),( Ju-yeon Choi ),( Han-saem Kim ),( Joon Hong Min ),( Young Jun Choi ),( Jae-hui Nam ),( Ga-young Lee ),( Won-serk Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2
Background: Grid fractional radiofrequency (GFR), fractional radiofrequency microneedle (FRM) and high intensity focused ultrasound (HIFU) have each specific mechanism for skin rejuvenation. Nasolabial fold wrinkles can be treated by applying consecutive sessions of three modalities. Objectives: To evaluate the clinical efficacy of the combined treatment of nasolabial fold wrinkles in Asians. Methods: This was a prospective study that enrolled twenty subjects with moderate nasolabial fold wrinkles. Subjects visited the clinic every four weeks for a total of three treatment sessions. Subjects received a combination therapy of GFR, FRM, and HIFU. Evaluation included medical photographs and satisfaction questionnaires. Two dermatologists evaluated the clinical photographs using the modified Fitzpatrick wrinkle scale (mFWS). Results: A total of eighteen subjects were assessed. The median age was 56.5 (Range 49-64). mFWS showed an improved score of 1.0 (IQR 0.5-1.375) at twenty weeks compared to a baseline score of 1.5 (IQR 1-1.875). (p <0.005) Six subjects (33 %) reported more than moderate improvement at twentieth week. There were no long-term complications associated with the treatment. Conclusion: This study was the first of its kind to use a triple combined therapy for the treatment of skin wrinkles. The results demonstrated the efficacy and safety of the combination therapy on nasolabial fold wrinkles.