• 복식문화연구
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• 제20권3호
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• pp.319-329
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• 2012

The market share of conglomerates is increasing in the Korean school uniform market these days. Functional fit problems occurred. Girls choose slim silhouette often experienced fit problems. The purpose of this study is to probe for functional design elements of high school girls' uniforms. A questionnaire survey was carried out. 202 high school girls took part in the survey. The questionnaire measured school uniform brand preference and size of school uniform jackets. The results of the survey show that over half of participants(56.6%) wore their jackets over nine hours per day. They considered the aesthetics of the design as the most important factor when purchasing school uniforms. That element affected their brand preference. In analyses of the fit suitability, there were no significant differences between brands. The jacket lengths were significantly different among brands, but all were evaluated as being short. About 60% of students had difficulty raising their arms while wearing their school uniform jackets. The results of this study revealed that high school girls' uniform jackets are too short and tight. Ergonomic design elements should be applied to high school girls' uniform jackets.

• 복식문화연구
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• 제22권6호
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• pp.899-910
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• 2014

The purpose of this study was to analyze high school students' school uniform wearing attitude by group according to clothing attitude targeting Gyeongnam area. This study aims to provide preliminary data in the field of school uniform and marketing that clothing propensity by groups is considered. This study conducted a survey targeting 762 high school students in Gyeongnam. For statistical analysis, SPSS for Window 14.0 was used for frequency analysis, factor analysis, reliability analysis, multiple sponse analysis, cluster analysis, ANOVA analysis and Duncan's ex-post analysis method. As a result of cluster analysis on the clothing attitude, students were divided into 4 segmentation of fashion seeking group, fashion indifference group, conformity group and modesty group. As a result of verification on the difference in perception toward wearing school uniform by groups which were classified according to the propensity of clothing attitude, activity, stability, and practicality were all varied according to the propensity of clothing attitude. 4 groups were significant differences in the degree of consent to wearing school uniform, price of school uniforms, tendency to prefer famous brand when purchasing school uniform, experience of transforming school uniform, opinion about school uniform modification and reason for school uniform modification. While low graders were many in 'modesty group', upper graders were many in 'fashion seeking group', which means that more segmentalized satisfaction of clothing by group may be raised if such a fact is considered when planning clothing for high school students segmentalized by age.

• 한국식품영양학회지
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• 제12권1호
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• pp.77-84
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• 1999

The purpose of this study is to establish a rapid preparation method of Dongchimi-juice having favor-able flavor and high antibacterial activity against undesirable bacteria in Naengmyon-broth by using high antibacterial strains of lactic acid bacteria Lactobacillus homohiochii B21 and leuconostoc mesenteroid-es subsp. mesenteroides C16 as Dongchimi starter. When the two strains of lactic acid bacteria were used as starter mixed culture was better than single culture in acid production and antibacterial activity. When starter was not inoculated in Dongchimi fermentation the numbers of Gram negatives and colifor-ms were remarkably increased in early phase and antibacterial activity could scarcely be detected. But when starter was inoculated the numbers of Gram negatives and coliforms were sharply decreased from early phase and antibacterial ctivity was high. When Dongchimi was made with heat sterilized mat-erials and starter there were no Gram negatives and coliforms and antibacterial activity was high. The antibacterial activity of starter inoculated Dongchimi was maximum in 2 days of fermentation at 2$0^{\circ}C$ and was scarcely detected in six days. In consideration of coliform counts antibacterial activity and the flavor of Dongchimi the preparation method in which all materials were heat treated at 8$0^{\circ}C$ for 15 min-utes and inoculated with mixed starter of the two strains and fermented for 2 days at 2$0^{\circ}C$ was thoug-ht to be good.

• 문화기술의 융합
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• 제5권2호
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• pp.355-360
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• 2019

본 연구에서는 고속열차 주행 중 발생하는 풍하중 안정성 검토조건을 준용하여, 열차속도 300km/h와 360km/h에 대한 고속선로용 고무보판 패널 구조의 열차 풍하중에 대한 구조적 안정성을 검토하였다. 이를 위해 고무보판 패널 시스템이 가장 복잡한 구성으로 설치될 수 있는 현장조건을 적용하여 3차원 해석모델링을 이용한 정밀 수치해석을 수행하였으며, 이를 통해 고속열차 풍하중에 대한 고무보판 패널 시스템의 구조적 안정성을 해석적으로 입증하였다.

• International Journal of Advanced Culture Technology
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• 제9권4호
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• pp.424-430
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• 2021

The purpose of this study is to analyse the characteristics and spreading laws of parameters such as fire smoke, concentration of CO, visibility, and temperature at fire scene in high-rise residential buildings under the different conditions of fire doors and automatic fire extinguishing systems. Using Pyrosim to simulate diverse fire scenes in a high-rise apartment with corridors, to analyze the changes in those parameters. The results show that when a fire occurs, closing the fire-fighting corridor will increase the smoke temperature and concentration of CO in the stairwell, and reduce the height and visibility of the smoke layer; the automatic fire extinguishing system effectively suppresses the increase in the temperature of the fire smoke and the sedimentation of the smoke layer. Reasonable setting and operation of the automatic fire extinguishing system could effectively inhibit the spread of fire. Although closing fire corridor can slow down the direct upward spread of smoke through the corridor, it will force the fire smoke into the stairwell, which will seriously affect evacuation through the stairs. Therefore, in order to reduce risks, it is forbidden to close the fire doors of the firefighting corridor and stacking combustible materials in the corridor, Also, intensifying inspections and ensuring the normal operation of the automatic fire extinguishing system are indispensable. Based on the research results, the significance of installing fire-fighting facilities in the construction of high-rise apartments was discussed and proved.

• 문화기술의 융합
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• 제9권1호
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• pp.479-484
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• 2023

본 연구는 고등학생의 우울에 자아존중감과 자기자비가 미치는 영향을 살펴보고자 하였다. 이를 위해, 편의 추출된 고등학교의 학생을 대상으로 자료를 수집하였다. 수집된 297명의 자료를 분석한 결과 자아존중감과 자기자비 모두 우울에 영향을 미치는 것으로 확인되었다. 자아존중감과 자기자비는 음의 영향력을 가지는 변수로 우울에 대한 설명력은 63%이었고, 자아존중감보다 자기자비가 우울에 더 큰 영향력을 가지는 것으로 나타났다. 따라서 고등학생들의 우울을 중재하기 위해 낮은 자아존중감을 높이고 자기자비 수준을 높일 수 있는 프로그램개발과 적용의 연구를 제언한다.

• Journal of Plant Biotechnology
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• 제50권
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• pp.108-114
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• 2023

In vitro conservation is one of the most effective strategies for rare plant protection, especially for orchid species. To maximize the success rates of in vitro explant establishment (stage I) in conservation programs, the application of tissue culture additives such as Plant Preservative Mixture^TM (PPM^TM) should be emphasized. In this study, we used Dendrobium thyrsiflorum Rchb.f. (1875) seeds and seedlings as a model for the evaluation of PPM^TM's phytotoxicity in the meristematic tissues of epiphytic orchids. PPM^TM had no observable inhibitory effect on protocorm, shoot, or root development when it was supplemented at 0.1%. PPM^TM supplementation caused adverse effects on D. thyrsiflorum explants at concentrations > 0.2%. At high concentrations, young in vitro seedlings showed damage, especially at the root tissue level. Based on this model, supplementation of 0.1-0.2% PPM^TM to culture media was successfully implemented to establish in vitro cultures of other rare orchid species in our conservation program.

• International Journal of Advanced Culture Technology
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• 제12권1호
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• pp.209-219
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• 2024

We studied the effects of science high school students on the change of epistemological beliefs in chemistry and the academic achievement of chemistry by completing 'advanced chemistry'. For seven months from July 2023 to January 2024, 80 first-year students at G Science High School in Gyeongnam were surveyed and analyzed for epistemological beliefs about chemistry before and after classes in advanced chemistry. Chemistry academic achievement was classified by 'upper' and 'lower' levels based on the end-of-semester grades of 'advanced chemistry' in the second semester of the first year and analyzed with the SPSS 28 program. After completing advanced chemistry, the epistemological belief in chemistry increased in the proportion of favorable responses. After completing advanced chemistry, the proportion of favorable responses increased in detailed factors such as 'effort', 'math link', 'outcome', 'reality link', and 'concepts', while the 'visualization' factor decreased. Although completing 'advanced chemistry' positively changed students' epistemological beliefs about chemistry, visual expression showed little contribution to understanding chemical concepts. Based on the above results, we will have to focus on the design of instructors' teaching-learning, such as learner-centered inquiry experiments, creative visual expressions, etc., for successful chemistry teaching-learning.

• 한국작물학회지
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• 제40권3호
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• pp.308-313
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• 1995

본 시험은 미숙종자의 배배양을 이용한 보리의 세대촉진을 위하여, 재배조건(15/10, 25/15$^{\circ}C$)과 등숙기간에 따른 미숙종자의 형질을 조사하고 이들 형질들간의 상호 관계를 구명함과 동시에, 미숙종자의 배배양시 유묘의 생육 반응을 검토하였던 바, 그 결과를 요약하면 다음과 같다. 1. 출수 후 21일이 경과한 미숙종자의 배장은 이삭의 하부보다는 중상부가, 저온(15/10$^{\circ}C$)보다는 고온(25/15$^{\circ}C$) 조건에서 길었는데, 특히 저온 조건의 하부에서 짧았다. 그러나 부위별 차이보다는 생육 온도 조건에 따른 차이가 컸다. 2. 배배양 후 유아장과 근수 및 근장은 고온의 경우 이삭 부위별 차이가 적었으나, 저온조건에서는 중, 상부보다 하부의 생육이 현저히 불량하였다. 3. 등숙 기간에 따른 배장의 변리는 고온 조건에서 21일경에 최장에 이르러 더이상 신장하지 않았지만 저온 조건에서는 29일까지도 계속적으로 신장하여 저온 조건의 29일배가 고온 조건의 17일배와 유사한 경향치를 보였다. 4. 고온 조건에서 17일이 경과한 배의 배장은 입폭, 유아장, 근수 및 근장과 정의 상관이 인정되었으나, 21일이 경과한 것은 어느 형질과도 상관이 인정되지 않았다. 5. 미숙종자의 배배양을 이용한 세대촉진시에는 25/15$^{\circ}C$의 고온 조건에서 출수후 17일이 경과한 배를 이용하는 것이 적당할 것으로 보였다.

• 한국미생물·생명공학회지
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• 제32권3호
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• pp.243-248
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• 2004

산업적 R3HB의 생산을 위한 재조합 대장균의 pilot규모에서의 유가식 배양과 연속식 배양을 연구하였다. Pilot 규모에서의 R3HB생산을 위하여 안전한 two plasmid system pBRRed와 pMCS 105를 제작하였으며, 제작된 plasmids을 이용하여 여러 다른 대장균을 형질 전환하였다. 얻어진 재조합 대장균들을 30 l의 발효기에서 회분식 배양한 결과 대장균 XL-10 Gold(pBRRed, pMCS105)가 가장 높은 R3HB 농도를 보였다 30 1 발효기에서 대장균 XL-10 Gold (pBRRed, PMCS105)을 유가식 배양한 결과 22.4 g/1의 R3HB가 얻어졌으며, 생산성은 0.97 g/1-h를 보였다. 고농도의 R3HB를 고생산성으로 얻기 위하여 유가식 배양으로 높은 균체 농도를 얻은 후 연속 배양으로 R3HB를 생산하는 전략을 개발하였다. 그 결과 0.2 $h^{-1}$ 의 dilution rate에서 R3HB 생산성은 5.06 g/1-h를 보였다. 이러한 결과는 산업적 규모에서 재조합 대장균을 이용하여 R3HB를 고농도, 고생산성으로 얻을 수 있다는 것을 보여준다.