• 응용통계연구
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• 제15권1호
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• pp.85-105
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• 2002

본 연구에서는 유전자 검사자료에서 각 유전자좌내 및 유전자좌간의 대립형질들간의 관계를 파악하기 위한 탐색적 방법을 고려하였다. 이를 위해 유전자데이터를 재배열한 후 대응분석 및 다중대응분석의 알고리즘을 적용하여 이를 수량화, 그래프화하는 방법 및 대응행렬도를 적용한 방법을 제안하였다 이러 한 수량화 및 그래프 결과가 하디-와인버그 평형검정 및 연관균형검정 결과와 어떤 관계가 있는지 알아보고 실제 한국인 집단에 대한 STR 유전자좌 자료를 이용하여 결과를 비교하였다.

• 과학교육연구지
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• 제47권2호
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• pp.167-179
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• 2023

이 연구는 1920년대 통신학교인 조선통신중학관에서 발행한 『중학강의록』과 『문교의 조선』, 『신지식』 및 신문 기사 등을 분석하여 당시 이루어진 통신교육에서 과학교육 상황을 살펴보았다. 통신교육 교재로 활용된 자료의 화학강의 내용의 분석과 검정시험 문제와의 비교 등으로 학교 밖과학교육의 실효성을 조사하였다. 통신교육은 학교 내 교육을 받지 못하는 1920년대의 높은 교육열의 소통 창구이었고, 상급학교 진학을 시도하기 위해 검정시험을 봐야 하는 이들에게는 매우 유용한 교육 방법이었다. 화학강의 내용이 검정시험 문제와 유사성이 높아서 학습자들은 통신교육을 상당히 선호했을 것이고 학습력도 높았을 것이다. 그러므로 조선어로 발행된 『중학강의록』은 당시 과학교육 상황에서 매우 의미 있는 자료로 활용되었다고 볼 수 있다.

• 대한영양사협회학술지
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• 제15권3호
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• pp.298-310
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• 2009

The purposes of this study were to examine school foodservice employees' awareness on dietitians' service leadership and to analyze the effects of the service leadership on employee attitudes (leader reliability, value correspondence, and leader satisfaction). Questionnaires were distributed to 208 school foodservice employees from November 2007 to January 2008. The results were as follows. First, in terms of the employees' perception on the dietitians' service leadership, service belief gained the highest score, followed by insight, attitude, and ability: the average score was 3.8 point. Second, the leader reliability and leader satisfaction scores perceived by the employees were over 3.8 point on average but the awareness on the value correspondence was 3.43 point. Third, among the service leadership factors, service belief (p<0.001) and insight (p<0.001) had positive effects on leader reliability. Also, service belief (p<0.01), service ability (p<0.001), and insight (p<0.01) had positive effects on value correspondence. Finally, service belief (p<0.001), service ability (p<0.05), and insight (p<0.001) had positive effects on leader satisfaction. Fourth, a hypothesis test using path analysis revealed that dietitians' service leadership produced positive effects on school foodservice employees' attitudes (leader reliability, value correspondence, and leader satisfaction). In conclusion, the service leadership of dietitians directly contributed to leader satisfaction, value correspondence, and leader reliability in school foodservice employees.

• 한국안전학회지
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• 제39권1호
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• pp.104-113
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• 2024

Unlike in general manufacturing process, safety management in laboratory-based research area is complicated because the latter generally involves trying untested methods or handling unusual substances in small amounts. Laboratory accidents in South Korea have recently shown an increasing trend. Unfortunately, statistics on such accidents are not officially published by any domestic public agencies. In this study, multivariate analysis was performed on the relationships between variables to develop effective strategies for preventing laboratory accidents. A Cross-Tabulation Analysis of accident-related factors in 179 accident cases revealed that the laboratory type, accident type, and unsafe-act type are all statistically significant, whereas the unsafe condition and management factors differ with the statistical criteria. Furthermore, the results of a Multiple-Correspondence Analysis showed that accidents can be divided largely into three groups having different accident causes and injury types; this confirms the necessity of different strategies to prevent accidents of each type. The findings also reveal differences between the distribution of accident types mentioned in the accident case collection books and actual reported cases. This suggests that an official statistical system administered by a public institution would be necessary for effective prevention of laboratory accidents.

• 한국초등과학교육학회지:초등과학교육
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• 제35권3호
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• pp.305-315
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• 2016

The purpose of this paper was to analyze the role of illustrations in elementary textbooks (3~4 grade) of the 2009 revised curriculum of science education in Korea from point of view of aim of science by applying the criteria of 5E inquiry process model for reflecting core aim of the science education. The subjects of the paper was the 105 illustrations in the earth-science domain of elementary science textbooks (3~4 grade) of the 2009 revised curriculum of science education in Korea. The analysis criterion was of two categories, the function of illustration and the role of illustration. the function of illustration was divided into three subcategories such as Exclusiveness type, correspondence type and supplementary type. The role of illustration was divide into five subcategories such as Engagement, Exploration, Explanation, Elaboration and Evaluation. According to results of the illustration analysis are as follows: the result of the function of illustration are exclusiveness type 39, correspondence type 36 and supplementary type 30, the important of point to note is that there are a lot of exclusiveness type considerably. compared with other subjects, this fact indicate character of illustration of the only science textbook. The result of the role of illustration are Engagement 14, exploration 64, explanation 25, elaboration 2 and evaluation 0. This data indicate main role of illustrations in earth-science domain is to help the students to be able to observe and explore. Cross-analysis of the function and role was a significant difference. Role of illustration was evenly distributed within Exclusiveness type on the other hand, the role of illustrations was mainly exploration and explanation in correspondence and supplementary type. Especially, illustration of exploration was mainly correspondence type.

• 한국환경과학회지
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• 제16권5호
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• pp.549-559
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• 2007

Vegetation surveys were performed at 45 plots along 10 highways cut slopes in South Korea. Total floral inventory, species richness and exotic plant percentage were obtained within each plot. Life history and life form of each species appeared were analyzed. Community types were classified using hierarchical cluster analysis and detrended correspondence analysis and non-metric multidimensional scaling were conducted from vegetation matrix. 292 species of vascular plants were discovered and the number of natives and exotics were 226 and 66, respectively. There were no significant differences of species richness and exotic plant percentage between cut slopes and rest areas. Hierarchical cluster analysis indicated five clear vegetation associations in cut slopes and rest areas. Detrended correspondence analysis indicated that species composition of total and native plants were similar along the highway cut slopes whereas exotic plants were distributed differentially along the highway cut slopes. in non-metric multidimensional scaling, the studied sites were more separated from each other on the basis of their species composition than the results of detrended correspondence analysis with respect to total, native and exotic plants. The both ordination represented that exotic plants have not been made uniform yet on cut slopes and rest areas by highway corridor in spite of diverse chronosequences after highway construction termination (1 to 22 years). This study showed that the distribution of species composition in exotic plants was different and localized on cut slopes and rest areas of highway in this representative peninsula area of North East Asia and the invasion of exotic plants can retard the process of plant species homogenization.

• 응용통계연구
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• 제14권2호
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• pp.401-413
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• 2001

이차원 분할자료에 대해서 행과 열의 관계를 저차원상에 시각적으로 표현하는 탐색적대응분석에 대하여 붓스트랩방법의 사용가능성을 살펴보았다. 기존의 탐색적 면만이 강조되어 왔던 대응분석에서 좌표점의 변이와 좌표점간의 거리에 대한 통계적 추론을 붓스트랩방법으로 해결할 수 있음을 보이고 또한 좌표축의 설명력에 대하여 붓스트랩신뢰구간의 포함확률의 일치성을 모의실험을 통해 제시하였다.

• 한국식품조리과학회지
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• 제21권2호
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• pp.155-162
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• 2005

The purpose of this study was to identify factors associated with sanitation and cleanliness regarding the importance of family restaurant employees in the Ulsan and Busan areas. Accordingly, this study conducted a suey questionnaire consisting of 28 measures of food-service as well as major subject descriptors. From the results, the frequency, descriptive, factor, correspondence analysis, major findings and marketing implications could be summarized as follows: First, 6 factors were extracted: cooking and control factor, food and tableware handling factor, personal cleanliness condition factor, purchase and receiving factor, unit food material store factor and Kitchen utensil sanitation factor. KMO and Bartlett' stest statistics showed that the data fitted the factor analysis well. Results of factor analysis, average variance extracted estimates and shared variance showed that the convergent and discriminant validity of 6 factors are supported and Cronbach's alpha showed that the internal consistency of the 6 factors was supported. Second, correspondence analysis indicated that statistically significant relationships existed between some of the family restaurant employee sanitation and cleanliness factors and the family restaurant enterprise.

• 한국건축시공학회지
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• 제20권3호
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• pp.269-278
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• 2020

본 연구에서는 건설현장 중 아파트 건설현장에서 발생한 산업재해에 대해 분석하고 업무상 재해 유형에 따른 재해요인을 다중 상응 분석을 통해 연관성을 분석하였다. 국내에서 세 번째로 재해빈도가 높은 아파트 건설현장에 대한 재해 관련 연구가 부족하고 설문 조사 기법을 활용한 연구들이 대부분이다. 따라서 본 연구에서는 산업재해원인조사 데이터에서 탐색적 데이터 분석을 진행하고 다중 상응 분석을 통해 각 재해요인 간의 연관성을 도출하였다. 연구의 결과를 두가지로 요약하면 다음과 같다. 첫째, 최근 아파트 시공이 초고층화 및 설계의 복잡화로 인해 고소작업이 많아짐에 따라 추락재해가 높은 빈도와 근로자의 사망률을 나타냈다. 또한, 사망은 경력이 매우 적은 작업자와 10년 이상의 경력을 가진 작업자가 대부분을 차지하고 있으며, 이는 안전교육 미실시, 경험 부족 그리고 근로자의 안전불감증으로 인해 발생하는 것으로 나타났다. 둘째, 다중 상응 분석 결과 대부분 발생하는 산업재해는 안전장비 착용, 올바른 작업절차 준수 및 관리·감독으로 충분히 예방할 수 있는 것으로 나타났다. 본 연구에서 도출된 중점 재해요인은 아파트 건설현장의 안전교육과 감독·관리에서 사용할 수 있을 것으로 판단된다.

• 한국산림과학회지
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• 제113권1호
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• pp.1-13
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• 2024

본 연구는 산림복지시설과 이용객 특성 간 연관성 및 결합 양상을 파악하기 위해 「2022 산림복지 시설·공간 이용객 실태조사」 결과를 활용하여 국립자연휴양림, 국립숲체원, 국가숲길, 국립치유의숲 등 4개 시설을 대상으로 범주형 자료분석인 대응분석을 실시하였다. 교차분석 결과, 산림복지시설별 연령대, 월평균 가구소득, 교통수단, 동반유형, 정보습득 경로, 방문목적은 고도로 유의한 차이를 보였다(p<.001). 대응분석 결과를 요약하면, 숲체원과 치유의숲이 연령대, 월평균 가구소득 등 인구통계학 특성에 따라 그 외 산림복지시설과 구별된 이용 양상으로 나타났다. 그리고 숲길 이용객의 교통수단은 그 외 산림복지시설과 차이점을 보였으며, 숲체원은 공적인 성격의 단체방문 유형과 관련기관 및 시설 홈페이지 및 온라인 포털사이트로부터 정보 습득, 그리고 교육 및 학습·체험교육 프로그램 참여 목적과 연관성을 보이는 등 동반유형, 정보습득 경로, 방문목적이 그 외 산림복지시설과 구별된 양상으로 나타났다. 본 연구를 통해 산림복지시설과 이용객 특성 간 연관성과 결합 양상이 확인되었으며, 대응분석을 통해 산림복지시설 이용객 자료 활용성의 범위를 확장하였다고 판단된다.