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최용석,김형영,Choi, Yong-Seok,Kim, Hyoung-Young 한국통계학회 2008 Communications for statistical applications and me Vol.15 No.1
행렬도 (biplot)는 이원표 자료행렬 (two-way data matrix)의 행과 열을 그래프에 동시에 나타내어 이들의 관계를 살피려는 다변량 그래프적 분석기법이다 (Gower와 Hand, 1996; 최용석, 2006, 1장). 그래프적 분석기법은 그 특성상 대용량 자료를 해석하는 데는 어려움이 따른다. 따라서, 자료를 효과적으로 줄일 수 있는 군집분석을 활용하여 원자료와 변수간의 행렬도가 아닌 각 군집과 변수간의 행렬도 분석을 수행함으로써, 기존의 행렬도에서 해석의 어려웠던 대용량 자료에 대한 해석이 가능하게 되며, 자료에 대한 정보를 쉽게 파악할 수 있는 장점을 가진다. Biplots are the multivariate analogue of scatter plots. They approximate the multivariate distribution of a sample in a few dimensions, typically two, and they superimpose on this display representations of the variables on which the samples are measured(Gower and Hand, 1996, Chapter 1). And the relationships between the observations and variables can be easily seen. Thus, biplots are useful for giving a graphical description of the data. However, this method does not give some concise interpretations between variables and observations when the number of observations are large. Therefore, in this study, we will suggest to interpret the biplot analysis by applying the K-means clustering analysis. It shows that the relationships between the clusters and variables can be easily interpreted. So, this method is more useful for giving a graphical description of the data than using raw data.
최용석,임성빈,정진형 단국대학교 치의학연구소 1994 논문집 Vol.6 No.2
A mucogingival grafting procedure has been developed to cover denuded root surfaces. The subepithelial connective tissue graft is composed of a free connective tissue graft and an overlying pedicle graft. The source of connective tissue graft were trap door approach and thinning of a full thickness palatal flap. The purpose of this study was compare a two different connective tissue obtaining method. In this study, where palatal pocket was present, pocket elimination was performed, and the tissue normally discarded after thinning of the palatal flap was used as a grafting material. The results were as follows: 1. The mean difference between trap door approach and thinning procedure for root coverage were 2.1±0.1㎜, 2.2±0.2㎜. 2. The mean difference between trap door approach and thinning procedure for pocket depth change were 0.2±0.1㎜, 0.2±0.2㎜. 3. The mean difference between trap door approach and thinning procedure for attachment gain were 2.1±0.2㎜, 2.4±0.2㎜. 4. The esthetics in recipient site, both color match and tissue contour, were acceptable to the patient in all cases. 5. Therefore, thinning procedure were similar to trap door approach in root coverage effect.
최용석 한국문학이론과비평학회 2005 한국문학이론과 비평 Vol.27 No.-
As new literature's birth as so, Postwar Novels as well start from overcoming existing grammar of novel. A new writing materialized in Kim Sung-han's postwar novel is understandable in this interconnection, which includes the realistic recognitionpeculiar to the writer. Actually, starting with corruption of the human value, it has stood out with critic contents : ideological violence and deception, antipathy of existing order and negative values, and so on. The sense on the writer's criticism through mainly characters is represented as direct or indirect method, sometimes ideological dimensional method. However, direct criticism among those, truth isn't free from indication that postwar reality gets it remained on a simple accusation level. And it is a sense of humor and joke that indirect criticism discussion should never left out. Within the purview of appropriate writing, application of literary equipment is related to these features. The application of these methods within the purview of appropriate writing mainly are applied to concocted or overstated experience, now and then experience bringing up the image of a certain situation rather than experience just as it is. With these causes, it is a fresh impact and interest for reader accustomed to solemnity of the novel to feel that configuration. On the one hand it can be applied to an obstacle in digging into reality earnestly and objectively. On the other hand human value, practical life, and period spirit is regarded asprospective of postwar in his writing. Ultimately this prospect for realizing totality of life and true, of course, is based on premises to writer's positive recognition. Moreover writer's prospect related ideological value is composed of understanding of the human being's existent method. It makes aware of writer's prospect original and essential. In this point, it can be confirmed that Kim Sung-han spreads a new narrative discussion of postwar novel in a individual voice. So his writing begins in existence as the lesson for the literary successors longing for the creative world of a new form and content.
최용석 한국해운물류학회 2022 해운물류연구 Vol.38 No.1
본 연구는 항만의 운영시스템을 대상으로 운영의 개선 및 생산성 향상을 위해 적용이 필요한 인공지능 로직의 적용방안에 대해서 적용의 우선순위를 분석하여 컨테이너터미널 운영 효율화를 위한 방안을 도출하고자 하였으며, 연구의 목표를 달성하기 위해 운영시스템 세부 개술들에 대한 필요 요인들을 도출하고 평가하였다. AHP를 통한 분석 결과는 1계층에서 야드시스템, 안벽시스템, 하역장비, 정보시스템의 순으로 중요도가 나타났다. 2계층 평가에서는 선석계획, 야드계획, 이송차량 풀링, 안벽크레인 스케줄링, 야드크레인 스케줄링 순으로 중요도가 높게 나타났으며, 야드시스템평가에서는 야드계획, 이송차량 풀링, 야드크레인 스케줄링 순으로 나타났다. 환산가중치를 이용한 종합평가 결과는 선석계획이 1위, 야드계획이 2위, 이송차량 풀링이 3위로 중요도가 높게 나타났다.
구기자에서 5종 살비제에 대한 구기자혹응애의 감수성 평가
최용석,박덕기,황인수,이경주,윤성원,이건우,손승완,주정일 한국농약과학회 2022 농약과학회지 Vol.26 No.3
구기자는 비타민이 풍부하여 노화억제 , 면역증진 등에 도움을 주는 약용작물이다 . 구기자의 생산량 감소에 영향을 주는 주요 해충 조사 결과 , 47종 이었으며 , 구기자혹응애 (Eriophyes sp.) 는 잎의 기형을 유도하고 혹을 형성 하여 생산량에 영향을 미치는 것으로 나타났다 . 구기자혹응애의 방제체계를 세우기 위해 5종 살비제 (cyflumetofen SC, acequinocyl SC, azocyclotin WP, etoxazole SC, flufenoxuron DC)의 약효를 발생후 약제처리와 발생전 약제처 리로 구별하여 평가하였다 . 시험 대상 살비제 중에 azocyclotin은 발생후 및 발생전 약제처리에서 모두 90% 이상의 약효를 보였다 . cyflumetofen은 발생전 약제처리에서 높은 살비효과를 보였다 . 시험약제 기준량과 배량 처리 3, 5, 7 일 후 재래종 구기자에서 약해는 없었다 . 따라서 , 구기자혹응애의 효과적인 방제 방법으로 cyflumetofen SC와 azocyclotin WP를 이용하여 신초 발생 전 1주 간격으로 2회 살포가 적합할 것으로 판단된다 .