• 대한안전경영과학회지
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• 제10권4호
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• pp.127-134
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• 2008

The objective of this study is to evaluate the mechanical behaviors and structural integrity of the weldment of high strength steel by using an acoustic emission (AE) techniques. Monotonic simple tension and AE tests were conducted against the 3 kinds of welded specimen. In order to analysis the effectiveness of weldability, joinability and structural integrity, we used K-means clustering method as a unsupervised learning pattern recognition algorithm for obtained multi-variate AE main data sets, such as AE counts, energy, amplitude, hits, risetime, duration, counts to peak and rms signals. Through the experimental results, the effectiveness of the proposed method is discussed.

• 디지털산업정보학회논문지
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• 제9권4호
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• pp.227-238
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• 2013

Although several studies show close relationships between social capitals and their performances, a little is known about specific social capitals and their effects on organizational culture and behaviour leading to their innovative outcomes within small and medium sized enterprises(: SMEs). This study examines some dimensions of social capitals and their influences on creating innovative culture and employees' behaviour. The importance of these are regarded as an imperative for SMEs to overcome the inequality of financial leverage and competitive power over resources. For the empirical analysis, survey data were collected from 51 domestic SMEs and analyzed by partial least squares(: PLS) that is one of popular structural modeling and multi-variate projection techniques to latent variables. The findings confirm a positive support of social capitals and their influences on the innovative culture and bahaviour. This result implies that managing the capability of social capitals is important for SMEs to develop the innovative culture and bahaviour and create a competitive advantage.

• 국제지역연구
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• 제15권3호
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• pp.583-603
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• 2011

본 연구는 한국의 자연휴양림 개발정책 및 계획수립을 위한 기초자료를 제공하기 위해 자연휴양림의 특성을 다변량분석법의 틀 속에서 종합적으로 파악하여 유형을 구분하였고 기존 연구들이 시행하지 않았던 유형구분에 대한 타당성 검증을 시도하였다. 연구결과 자연휴양림은 4개 유형으로 구분되었는데, 타당성을 검증한 결과 최초 구분되었던 결과와 달리 유형I(생태자연은 좋지 못하지만 재해위험이 낮고 접근이용성이 높은 휴양림)은 25개 휴양림에서 24개로, 유형II(생태자연은 좋지 못하지만 재해위험이 낮고 경사도가 높아 접근이용성이 낮은 휴양림)는 25개 휴양림에서 26개로, 유형III(매력적인 식생 경관과 다양한 휴양기회를 가지며 경사가 낮지만 접근이용성이 낮은 휴양림)은 17개 휴양림에서 16개로, 유형IV(생태자연은 좋지만 재해위험이 높고 경사가 급하며 경관과 휴양기회가 적은 휴양림)는 25개 휴양림에서 25개로 조정되었다. 이는 기존 연구들에서 시행하지 않았던 구분된 유형들에 대한 타당성 검증의 유용성을 보여주는 것이라 할 수 있다. 휴양림의 유형구분은 정책의 수립 실행에 효율성을 증대시켜 주는 것은 분명한 바, 나아가 구분된 유형들의 타당성을 검증함으로써 향후 정확한 목표휴양림에 대한 정책수립 실행의 효과를 기대할 수 있을 것이다.

• 한국축산식품학회지
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• 제42권4호
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• pp.672-688
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• 2022

The objective of this study was to explore the potential of front face fluorescence spectroscopy (FFFS) as rapid, non-destructive and inclusive technique along with multi-variate analysis for predicting meat adulteration. For this purpose (FFFS) was used to discriminate pure minced beef meat and adulterated minced beef meat containing (1%, 2%, 3%, 4%, 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%) of chicken meat as an adulterant in uncooked beef meat samples. Fixed excitation (290 nm, 322 nm, and 340 nm) and fixed emission (410 nm) wavelengths were used for performing analysis. Fluorescence spectra were acquired from pure and adulterated meat samples to differentiate pure and binary mixtures of meat samples. Principle component analysis, partial least square regression and hierarchical cluster analysis were used as chemometric tools to find out the information from spectral data. These chemometric tools predict adulteration in minced beef meat up to 10% chicken meat but are not good in distinguishing adulteration level from 1% to 5%. The results of this research provide baseline for future work for generating spectral libraries using larger datasets for on-line detection of meat authenticity by using fluorescence spectroscopy.

• 한국문헌정보학회지
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• 제39권3호
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• pp.207-224
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• 2005

본 연구에서는 저자 동시인용분석 기법을 이용하여 최근 5년간의 국내와 미국의 기록관리학 분야의 지적구조를 분석하고 비교하였다. 이를 위하여 2000년부터 2004년까지 발간된 국내와 미국의 기록관리 분야의 대표적인 학술지를 중심으로 핵심 저자군을 선정하였고, 이들 저자들간의 동시인용빈도를 적용하여 다차원축척기법에 의한 이차원상의 저자지도를 산출하여 지적구조를 확인하였다. 지적구조의 비교분석 결과 국내의 기록관리학 연구영역은 기록관리학 관련 법제도$\cdot$정책 분야에 집중되어 있는 반면, 미국의 기록관리학 연구영역은 정보기술을 기반으로 한 전자기록물 관리 연구주제를 중점적으로 수행해온 것으로 나타나서 국내 기록관리학의 향후 연구방향 및 연구영역 확대의 필요성을 확인할 수 있었다.

• 한국약용작물학회지
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• 제21권4호
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• pp.247-254
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• 2013

Collected germplasms of five representative dandelion species (Taraxacum ohwianum, T. platycarpum, T. platypecidum, T. officinale, and T. coreanum) were 104 lines from different habitates in Korea and China. Their genetic diversity was analyzed by genomic fingerprinting method using amplified fragment length polymorphism (AFLP). AFLP results of 6 primer combinations were revealed 1,176 total DNA fragments and 523 polymorphic bands with a 44.4% ratio of polymorphism. On the basis of similarity coefficient analysis by unweight pair group method with arithmetic averages (UPGMA), 104 dandelion germplasm lines were ranged from 0.64 to 0.99 and clustered distinct five group depending on the species. Furthermore, a principal coordinate analysis (PCA) by the application of multi-variate analysis indicated significantly greater differences among species than geographical origins.

• 한국약용작물학회지
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• 제21권6호
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• pp.455-460
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• 2013

Collected germplasms of five representative species belonging to Curcuma genus (C. longa, C. aromatica, C. zedoaria, C. phaeocaulis and C. kwangsiensis) were 52 samples from different farmhouse in Korea and China. To elucidate the genetic diversity among the species, 52 samples were analyzed by genomic fingerprinting method using amplified fragment length polymorphism (AFLP). AFLP results of 6 primer combinations were revealed 643 total DNA fragments and 349 polymorphic bands with the 54.3% ratio of polymorphism. In the analysis of coefficient similarity using unweight pair group method with arithmetic averages (UPGMA), 52 Curcuma germplasm lines were ranged from 0.60 to 0.99 and clustered distinct five groups according to the species and collected geographical levels. However, the result of principal coordinate analysis (PCA) by multi-variate analysis was shown significantly greater differences among species than geographical origins based on AFLP profiling data of these samples.

• 경영과정보연구
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• 제29권4호
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• pp.287-304
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• 2010

기업들은 일반적으로, 가치가 있으며 희귀하고, 또 대체불가능하며 모방이 어려운 자원을 보유하고 있다 하더라도 이들 자원이 경쟁전략으로 연결되기 위해서는 자원을 역량을 효과적으로 활용할 수 있는 기업의 역량(corporate capability)이 있어야 한다. 특히, 정보기술기업들은 자원기반관점에서의 내적인 기업역량(corporate capability)의 확보와 우월한 경쟁우위를 바탕으로 경쟁자에 비해 경쟁우위(competitive advantage)를 창출하여야 하며, 이것이 기업성과와 연결 될 수 있다. 연구의 목적은 정보기술기업들은 자원기반관점에서의 내적인 기업역량(corporate capability)의 확보와 우월한 경쟁우위를 바탕으로 경쟁자에 비해 경쟁우위(competitive advantage)를 창출하여야 하며, 이것이 기업성과와 연결 될 수 있다는 가정 하에서 출발하고 있으며, 정보기술 기업들의 역량과 경쟁전략 및 성과의 관계를 한국의 정보기술기업 조직에서 수집한 자료를 토대로 실증적으로 분석하고자 하고자 하였다. 실증적 연구를 통해 도출된 정보기술기업들은 기업역량과 경쟁전략의 차원에서 통계적으로 유의한 결과들을 도출하였는데, 특히 재무역량과 원가우위의 정의 영향관계, 반면에 재무역량과 기술 차별화전략의 부의 영향관계를 도출하였다. 또한 기업역량의 변수들은 경영성과에는 모두 정의 영향을 미치고 있는 것으로 나타다 기업의 핵심역량과 자원기준관점의 중요성을 확인하는 계기가 되었다. 또한 경쟁전략과 경영성과의 관점에서는 정보기술기업의 경우에도 기술 차별화의 전략적 중요성에도 불구하고 원가우위 전략을 추구함으로서 경영성과에 직접적인 정의 영향이 있음을 확인하였다.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2006년도 추계 학술대회
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• pp.251-259
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• 2006

Evaluation of the work of art with intention of the artist different is not a possibility of free oneself from the limit which estimates an evaluation at value of appreciator. We tried new interpreting about the work of art in this paper. The work of art respects the intention of the artist to make it and interprets intention until now. After critics distinguish by a period, an area that they set to philosophical thought which is the time and interpreted. We set to each one subjectivity and interpreted between artist to make the work of art and appreciator. But in this paper, we tied various criteria which appreciates the work of art. We tried so that we presented the intimacy each other newly. Otherwise we tied with the subjectivity of the individual and are the try to be an objectification low through statistical technique. We looked into the culture and art in the introduction and explain the discussion about the work of art interpreting which the main subject. We set the category 6 area, and explain an each criteria explanation and assessment method. We tried to propose new interpreting as the intimacy to be multivariate data analysis result of the assessment analysis. Stopping from the thing which sees the work of art knows, it will be able to give meaning thing from this research prerequisite.

• 한국환경과학회지
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• 제16권12호
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• pp.1411-1424
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• 2007

Long-term trends and distribution patterns of water quality were investigated in the Asan coastal areas of Yellow Sea, Korea from 1975 to 2005. Water samples were collected at 3 stations and physicochemical parameters were analyzed including water temperature, salinity, suspended solids(SS), chemical oxygen demand(COD), dissolved oxygen(DO) and nutrients. Spatial distribution patterns were not clear among stations but the seasonal variations were distinct except COD, SS and nitrate. The trend analysis by principal component analysis(PCA) during twenty years revealed the significant variations in water quality in the study area, Annual water qualities were clearly discriminated into 4 clusters by PCA; year cluster 1988-1991, 1994-1997, and 1992-1993/1998-2005. By this multi-variate analysis we can summarize the annual trends as the followings; salinity, suspended solids and dissolved oxygen tended to increase from late 1980's, increased pH and COD from 1992, and decreased salinity and increased nitrogen and COD from 1990 due to the runoff frow agricultural lands causing eutrophication.