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사상체질별 긍정적, 부정적 성격특성과 삶의 질의 연관성 연구
김호석,김상혁,이시우,백영화,유종향,Kim, Ho-Seok,Kim, Sang-Hyuk,Lee, Si-Woo,Back, Young-Hwa,Yoo, Jong-Hyang 사상체질의학회 2014 사상체질의학회지 Vol.26 No.1
Objectives The purpose of this study was to examine the effects of positive and negative emotion on the quality of life(QoL) in each Sasang contitution, using Positive Affect and Negative Affect Schedule(PANAS) and Short Form-12 Health Survey Questionnaire(SF-12) questionnaire. Methods A total of 1,123 participants completed the Korean version of the PANAS and SF-12 questionnaire. The participants were classified into one Sasang constitution by QSCC II. The effects of emotion on the QoL were compared between the each Sasang contitution using analysis of variance(ANOVA). Results We found significant differences between constitutions in Positive Affect(PA), PA-Joy, PA-Interest and PA-Activation of PANAS. And we found significant differences between constitutions in Mental Component Summary(MCS) of SF-12. Negative correlation of less -0.4 was shown in Negative Affect(NA), NA-Afraid, NA-Upset of PANAS and MCS of SF-12. Conclusions The Soyangin has significantly higher score than Soeumin in PA, PA-Joy, PA-Interest and PA-Activation of PANAS as previous studies. This study also shows the correlation between negative emotion and decline in the quality of mental status.
An Enhanced Density and Grid based Spatial Clustering Algorithm for Large Spatial Database
김호석,김경배,배해영,Gao, Song,Kim, Ho-Seok,Xia, Ying,Kim, Gyoung-Bae,Bae, Hae-Young 한국정보처리학회 2006 정보처리학회논문지D Vol.13 No.5
Spatial clustering, which groups similar objects based on their distance, connectivity, or their relative density in space, is an important component of spatial data mining. Density-based and grid-based clustering are two main clustering approaches. The former is famous for its capability of discovering clusters of various shapes and eliminating noises, while the latter is well known for its high speed. Clustering large data sets has always been a serious challenge for clustering algorithms, because huge data set would make the clustering process extremely costly. In this paper, we propose an enhanced Density-Grid based Clustering algorithm for Large spatial database by setting a default number of intervals and removing the outliers effectively with the help of a proper measurement to identify areas of high density in the input data space. We use a density threshold DT to recognize dense cells before neighbor dense cells are combined to form clusters. When proposed algorithm is performed on large dataset, a proper granularity of each dimension in data space and a density threshold for recognizing dense areas can improve the performance of this algorithm. We combine grid-based and density-based methods together to not only increase the efficiency but also find clusters with arbitrary shape. Synthetic datasets are used for experimental evaluation which shows that proposed method has high performance and accuracy in the experiments. 공간 데이터마이닝 분야에서 객체간의 거리, 연결성, 상대적인 밀도를 기반으로 비슷한 객체들을 하나의 그룹으로 묶는 공간 클러스터링은 중요한 컴포넌트이다. 공간 클러스터링 알고리즘은 밀도 기반 클러스터링과 격자 기반 클러스터링 알고리즘 등으로 나눌 수 있다. 밀도 기반 클러스터링 알고리즘은 다양한 모양과 크기의 클러스터를 구분할 수 있으며, 잡음을 제거할 수 있는 장점을 가지고 있는 반면에, 격자 기반 클러스터링 처리속도가 빠르다는 장점을 가지고 있다. 하지만, 대량의 공간 데이터 집합을 클러스터링 하는 것은 데이터 처리 비용이 급격하게 증가하기 때문에 클러스터링 처리 결과에 큰 영향을 준다. 본 논문은 대용량의 공간 데이터베이스에서 공간 객체간의 고밀도 영역을 식별하여 잡음을 제거하기 위한 수치데이터 값과 기본 격자간격 개수를 정의하는 확장된 밀도-격자 기반 클러스터링 알고리즘을 제안한다. 제안 알고리즘은 고밀도 영역 식별을 위하여 threashold(DT)를 정의하였으며, 격자 및 밀도 기반 기법의 장점을 이용하여 임의의 객체 클러스터링을 식별할 수 있는 성능을 향상시켰다. 성능평가에서 기존의 클러스터링 알고리즘과의 다양한 비교 평가 실험을 통하여, 제안 알고리즘이 빠르고 정확한 데이터 클러스터링 결과를 나타냄을 보인다.
하악 협측골 시상분절술 및 장골 이식술을 이용한 거대치아종의 치험례
김호석,송재철,김진수,Kim, Ho-Seok,Song, Jae-Chul,Kim, Chin-Soo 대한악안면성형재건외과학회 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.4
This is the case report of huge complex odontoma treated with sagittal splitting of buccal bone plate and iliac bone graft in left mandible angle. The 22 years old patient was admitted to the department of Oral and Maxillofacial Surgery of Kyungpook National University Hospital with the chief complaint of swelling on the left mandible angle area. We used extra oral Risdon incision and splitted the buccal cortical bone after making the horizontal bone cut buccally. The tumor mass was removed with cutting into the pieces with surgical bur to prevent mandibular fracture. The dead space was grafted with autogenous iliac bone graft and the splitted buccal cortical bone was fixed with two L-type miniplate. After 12months follow up check, we noticed good process of bone healing and satisfactory aesthetic result. In this case, my operative approach provided the excellent surgical access to the hard tissue mass and minimized post operative complication comparing with the conventional surgical approaches.
한국인과 연길 거주 조선족의 체질별 체형 비교 연구(Propensity Score Matching을 활용하여)
김호석,백영화,이시우,유종향,Kim, Hoseok,Baek, Younghwa,Lee, Siwoo,Yoo, Jonghyang 사상체질의학회 2016 사상체질의학회지 Vol.28 No.1
Objectives The body shape was a key information for diagnosing the Sasang constitution (SC) in Sasang constitutional medicine. The aim of this study was to compare the body shapes and mainly focusing on the Korean and Chinese-KoreanMethods We calculated the propensity score for each SC type in males and females separately, and compared body shape including 8 circumference and 5 width between Korean and Chinese-Korean according to the sex and SC.Results Koreans have larger trunk and hip area compared to Chinese-Koreans, while Chinese-Koreans have larger abdomen compared with Koreans. Most variables were significantly different among SC types, for both Korean and Chinese-Korean. Especially, the Taeumin (TE) type has the largest body shape compared with the other SC types, it was similar between Korean and Chinese-Korean.Conclusions This study showed that the TE type has the largest body shape, followed by Soyangin (SY) and Soeumin (SE) in order, for both Korean and Chinese-Korean respectively. These results suggests that the body shape of Chinese-Korean is similar with Korean based on SC type.
EILS 활용한 MDPS의 Return-ability 특성 개선에 관한 연구
김호석(Hoseok Kim),김태욱(Taewook Kim),권재준(Jaejoon Kwon),김선희(Sunhee Kim),박기홍(Kihong Park),허승진(Seungjin Heo) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Recently, Electric Power Steering(EPS) system has become widely equipped in the vehicles. EPS system, which generates the assist torque by an electric motor, has many advantage in comparison with the conventional hydraulic power steering system. But EPS system may have drivers feel the displeasure because the lack of steering return-ability results from the mechanical friction loss. To improve the steering return-ability for EPS system, this paper develops a new EPS strategy which modulates the signal of torque sensor by estimating the alignment torque.