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한국산 맨드래미 꽃의 적색 색소 : 적색 색소의 식품학적 안정성 (Red Pigment of the Korean Cockcomb Flower: Color Stability of the Red Pigment)

  • 이상열;조숙자;이경애;변평화;변시명
    • 한국식품과학회지
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    • 제21권3호
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    • pp.446-452
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    • 1989
  • 한국산 맨드래미 꽃의 적색 색소인 베타시아닌 색소의 식품학적 안정성을 조사하기 위하여 온도, pH, water activity, 빛 및 공기조절에 따른 변화를 관찰하였다. 이 적색 색소는 pH4.0에서 가장 안정하였으며, 열에 대한 분해 활성화에너지 (Ea)는 17.55kcal/mol이었다. 일반적으로 당화합물의 첨가는 0.1M농도에서 색소 분해 방지효과가 있었고, 식품속에 존재하는 농도의 유기산, 금속이온 및 항산화제들은 적색 색소의 분해를 심하게 일으키지 않음으로써, 이 적색 색소는 천연식품 색소로서 이용될 가능성이 증명되었다.

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의사결정 트리 기반 인공지능 융합교육프로그램 개발 및 적용: 언플러그드 활동을 중심으로 (Development and Application of Artificial Intelligence Convergence Education Program Based on Decision Tree: Focusing on Unplugged Activities)

  • 김성애
    • 실천공학교육논문지
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    • 제14권3호
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    • pp.459-469
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    • 2022
  • 본 연구의 목적은 의사결정 트리 기반 인공지능 융합교육프로그램을 개발하고 이를 적용함으로써 교육적 효과를 탐색하는 것이다. 본 연구의 목적을 달성하기 위해 준비, 개발, 개선의 3단계 절차를 통해 연구를 수행하였으며 개발된 인공지능 융합 교육 프로그램은 창의적 문제 해결 과정의 '문제의 이해', '아이디어 탐색 및 개발', '실현', '평가'의 4단계로 구성되었다. 특히 이 교육프로그램은 프로그래밍을 포함하지 않는 언플러그드 활동으로서, 프로그래밍을 포함하여 인공지능 기술을 수업시간에 다루는 교과인 초등 실과, 주니어 공학교육의 일환인 기술·가정, 정보 이외의 교과에서도 인공지능 융합교육을 실행할 수 있다는 점에서 주목할 만하다. 즉, 특정 교과가 아닌 대부분의 교과에서 인공지능 기술을 융합하여 교육할 수 있다는 것을 보여주는 것으로서 교과 내용에 다수 포함되고 있는 분류 개념을 교육할 때 인공지능 기술의 개념과 원리를 활용할 수 있는 현장 적용 가능성을 확인했다는데 큰 의의를 가진다.

고령 소비자의 인터넷 뱅킹 사용 자기효능감의 영향요인에 관한 연구: 60대와 70대의 비교 (A Study on Influencing Factors of Elderly Consumers' Self-Efficacy in Internet Banking Usage: Exploring Moderating Effect of 60s and 70s)

  • 구윤혜;양수진
    • 한국가정과교육학회지
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    • 제34권4호
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    • pp.77-92
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    • 2022
  • 최근 금융산업에서의 디지털 전환이 가속화되며, 인터넷 활용의 취약계층인 고령 소비자의 인터넷 뱅킹 사용 수준을 제고하는 것은 중요한 과제가 되었다. 이에 본 연구는 미디어패널조사 11차년도 자료의 60대 이상 3,101명의 응답을 분석하여, 고령 소비자의 인터넷 뱅킹 사용에 대한 자기효능감에 영향을 미치는 인구통계학적, 경험적, 심리적 요인을 규명하였다. 주요 연구결과는 다음과 같다. 첫째 고령 소비자의 인터넷 뱅킹 사용에 대한 자기효능감에 미치는 인구통계학적 변수로 성별, 교육수준, 직업유무, 소득수준을 확인하였다. 둘째 고령 소비자의 인터넷 뱅킹 사용에 대한 자기효능감에 영향을 미치는 경험적 요인으로 인터넷 쇼핑 경험을, 심리적 요인으로 정보보안우려, 디지털 리터러시, 높은 문제해결의지를 확인하였다. 셋째, 경험적, 심리적 영향요인이 60대와 70대 이상의 연령 구분에 따라 다른 영향력을 갖는지에 대하여 조절효과 분석을 실시한 결과, 모든 변수에서 연령 구분에 따라 인터넷 뱅킹 사용에 대한 자기효능감에 미치는 영향력이 다름을 확인하였다. 본 연구의 결과는 고령층으로 구분되는 소비자 집단 내에서도 금융행동의 차이를 유발하는 특성이 있음을 경험적으로 밝혀냄으로써 고령 소비자의 비대면 금융 서비스 활용과 관련한 논의에 기여할 수 있을 것이다.

언택트 시대에 비대면 수업이 의류학 분야 대학생의 핵심역량 수준에 미치는 영향: 플립러닝 기법의 적용 사례를 중심으로 (The Effect of Non-Face-to-Face Class on Core Competencies of College Students in Clothing Major: Focused on Application Case of Flipped Learning)

  • 김태연
    • 한국가정과교육학회지
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    • 제34권1호
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    • pp.151-165
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    • 2022
  • 본 연구는 코로나19 사태 이후 증가한 비대면 수업의 효과성을 측정하기 위해 대학 수업에서 강조되고 있는 핵심역량과 학습 만족도를 사용하여 알아보고자 하였다. 이를 위해 충북 청주에 있는 S 대학교에서 진행되는 의류학 이론 전공 1개 교과목에서 플립러닝(flipped learning)이 적용된 비대면 수업을 진행하고 해당 교과목에 설정된 주요 핵심역량인 문제해결 역량을 중심으로 3가지 세부 영역인 문제분석력, 자원·정보·기술활용 능력, 융·복합적 사고력 및 전반적인 학습 만족도에서 비대면 수업 사전-사후 차이를 검증하였다. 연구결과 학생들은 플립러닝이 적용된 비대면 수업에 참여한 후, 3가지 문제해결 역량 세부 영역에서 능력이 향상되었다고 인식하고 있었으며 전반적인 학습 만족도도 증가한 것으로 나타났다. 기존에 의류학 전공 분야에서 비대면 수업에 대한 효과 측정은 주로 패션디자인과 의복 구성 교과목에서 수행되었지만, 본 연구결과를 토대로 이론 중심의 강의식 수업에서 플립러닝과 같은 교수·학습법이 적용된 비대면 수업 진행은 학습자의 전공 지식 습득을 넘어 문제해결 역량과 같은 대학생 핵심역량의 향상에도 효과적인 방법이라 제언할 수 있다. 본 연구는 의류학 전공 교과목 중 이론 중심의 수업에 학습자 중심의 비대면 수업 방식의 적용 사례와 그 효과를 제시하였다는 데 의의가 있으며 대학생 핵심역량 향상을 위한 차별화된 비대면 수업 설계 전략에 기초자료가 되리라 생각한다.

소비자들의 일반기후환경태도와 패션기후환경태도: 가치와 지식 및 기후인식과의 관계를 중심으로 (Consumers' Attitudes toward the General and Fashion-Specific Climate Environments: Focusing on the Relations with Values, Knowledge, and Climate Cognition)

  • 정인희
    • Human Ecology Research
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    • 제61권4호
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    • pp.599-613
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    • 2023
  • This study investigated female consumers' attitudes toward the general and fashion-specific climate environments and analyzed the relations between the attitudes and the variables such as values, knowledge, and climate cognition. The data was collected from a sample of 450 women in their 20s, 30s, and 40s via quota sampling from a selfreported online survey in 2023. The measurement comprised the attitudes toward the general and fashion-specific climate environments, Rokeach's 18 terminal values, Holbrook's 8 consumer values regarding fashion products, climate environmental knowledge related to fashion, the cognition concerning the climate crisis, and several demographic variables. Descriptive statistics, factor analysis, reliability analysis, and correlations were applied to the data using SPSS. As a result, two factors were determined for the attitudes toward the general and fashion-specific climate environments, respectively: social and personal. Family security, happiness, and self-respect were identified as important terminal values. Quality, efficiency, aesthetics, and ethics were considered important when the current sample group purchased fashion products. The mean score of climate environmental knowledge related to fashion was lower than neutral; however the cognition of the climate crisis was considerably high. Attitudes toward the general and fashion-specific climate environments showed positive relations with values, knowledge, and climate cognition. The results were discussed to provide some insight and suggestions to carbon neutrality and the related studies.

우리나라 고등학생의 식품 및 영양소 섭취 변화 추이 - 2007~2015 국민건강영양조사를 이용하여 - (Trends in Food and Nutrient Intake of High School Students based on the Korea National Health and Nutrition Examination Survey 2007~2015)

  • 김선효
    • 한국식품영양학회지
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    • 제33권5호
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    • pp.447-458
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    • 2020
  • This study assessed yearly trends of food and nutrient intake among high school students aged 16 to 18 years (n=2,377) using the 2007~2015 Korea National Health and Nutrition Examination Survey (KNHANES). Yearly trends of food or nutrient intake were analyzed via logistic regression analysis. The results showed that consumption of sugars & sweets, and beverages & alcohols was increased rapidly during this period (p<0.0001). Intake of meat & meat products, and fish & shellfish also was increased (p=0.0008). Intake of grains and grain products was increased until year 2011 but declined after 2012 (p=0.0025). Consumption of vegetables, and milk & milk products was decreased (p=0.0395). Intake of protein, fat, thiamin, riboflavin, niacin, and iron was increased (p=0.0445). Carbohydrate energy ratio was decreased, whereas fat energy ratio was increased (p=0.0235). Most nutrient intakes satisfied the dietary reference intakes for Koreans except dietary fiber (19.6~26.2%), calcium (46.9~55.2%) and sodium (more than 221.4%) during this period. There was a significant positive correlation between most food group intakes and most nutrient intakes (p=0.0468). Therefore, it is crucial to increase dietary fiber and calcium intake and decrease consumption of sugars, fats and sodium through diverse eating of food groups to ensure balanced nutrition of subjects.

인터넷전문은행 수용 의도와 저항에 관한 연구: 소비자, 혁신, 환경 특성을 중심으로 (Consumers' acceptance and resistance to virtual bank: views of non-users)

  • 김효정;이승신
    • Human Ecology Research
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    • 제57권2호
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    • pp.171-183
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    • 2019
  • Convergence between technology and financial services is ubiquitous and widespread. Virtual banks represent an important aspect of financial markets that can generate value added for consumers and enhance the quality of financial services. This study explores the effect of innovation characteristics (relative advantage, compatibility, and perceived risk), consumer characteristics (status quo bias), and social mechanisms (network externality: complementarity, numbers of peers) on consumers' adoption intention and resistance to virtual banks. This study adopted an innovation resistance model with two dependent variables: adoption intention and resistance to virtual banks. An online self-administered survey was conducted and 532 or non-users of virtual banks aged 20 to 69 years old were analyzed. Frequency analysis, descriptive analysis, and hierarchical multiple regression indicated that status quo bias, relative advantage, perceived risk, complementarity, and number of peers insignificantly influence the adoption intention regarding virtual banks. Furthermore, status quo bias, relative advantage, perceived risk, and number of peers insignificantly influence the resistance to virtual banks. Female respondents have a lower adoption intention and higher resistance to virtual banks than male respondents. The findings suggest that the innovation resistance model can be useful in understanding consumers'adoption and resistance behavior as well as reveal that innovation characteristics, consumer characteristics, and social mechanism are important antecedent variables of the innovation adoption decision.

Factors Influencing Corporate Financial Performance: Empirical Evidence from the Textile and Garment Industry in Vietnam

  • DIU, Tran Thi Phuong
    • The Journal of Asian Finance, Economics and Business
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    • 제10권1호
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    • pp.49-55
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    • 2023
  • Business is an important entity in every economy with its role in job creation, budget contribution, and national output. It can be said that enterprises are also one of the leading units that play a key role in implementing digital transformation, grasping science and technology, and improving labor productivity. Developing a team of enterprises that are both strong in quantity and strong in quality is an urgent requirement in many countries, including Vietnam. Vietnam is a developing country and home to many textile and garment enterprises operating due to the advantages of cheap labor and a large market, the textile and garment industry is capable of creating many jobs for the economy. Studying the factors affecting corporate financial performance across 250 textile and garment enterprises in Hanoi capital and Bac Ninh province, the research results show that when enterprises have the ability to mobilize capital, the cost is cheap, appropriate, and optimal, most businesses often achieve higher business efficiency and financial performance. In contrast, enterprises that are difficult to raise capital in the economy often achieve low financial efficiency and financial performance. The study also confirms the role of human capital in enterprises, enterprises with high human capital often achieve high profits.

Comparison of Physiological Properties of Gamma-Irradiated Root and Stolen Extracts of Gamcho (Licorice, Glycyrrhiza uralensis Fischer)

  • Cheorun ;Kim, Myung-Cheol;Kim, Kwan-Soo;Kang, Seong-Mo;Kim, Chi-Bong;Lee, Hyun-Ja;Byun, Myung-Woo
    • Preventive Nutrition and Food Science
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    • 제7권3호
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    • pp.273-277
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    • 2002
  • Physiological properties of root and stolen of Gamcho (Licorice, Glycyrrhiza uralensis Fischer) were compared following irradiation at 20 kGy. The root and stolen of Gamcho were extracted with 70 % ethanol, irradiated and stoved in a 4"C refrigerator. Irradiation induced color changes, electron donating ability (EDA), and tyro-sinase inhibition effect (TIE) were investigated. The color of the non-irradiated stolen extract was darker than the non-irradiated root extract (p<0.05), but irradiation eliminated color differences between stolen and root extracts. Generally, irradiation did not affect EDA and TIE of either of the extracts. However, EDA and TIE were higher in stolen extract than in root extract, when the higher dilution factor was considered. These results indicate that the stolen of Gamcho, which is mostly wasted, is a valuable source of phytochemicals with greater EDA and TIE activities than Gamcho root.root.

Textbooks and Textiles: Fashion in East Asia, 1920-1945

  • Yi, Jaeyoon
    • International Journal of Costume and Fashion
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    • 제15권1호
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    • pp.87-101
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    • 2015
  • From the 1920s to 1945, East Asia experienced radical social change with the introduction of new fashion styles, and new ways of thinking, from the West. The emergence of a new generation of "new women" educated in modern schools was part of this phenomenon, and functioned as a trend-setting influence in East Asian society. In schools, education in dressmaking, sewing, and home economics were important parts of female education. Adopting a new fashion style is, by necessity, accompanied by the new technology of dressmaking. Given that ready-made clothing was not generally available, dressmaking education also served to introduce a new material culture. In Korea and Taiwan under Japanese colonization, the greater part of school curricula and textbooks mirrored those in Japan, which enabled these countries to develop and adopt transnational styles as well as local styles. This research explores the transition of women's fashion in East Asia in modern and colonial conditions from the 1920s to the 1940s by analysing curricula and textbooks on dressmaking in comparison with the prevailing styles in each region. This is expected to suggest the impact of modernity in East Asia and the transnational styles of fashion in colonial Korea and Taiwan, as well as Japan, developed within the local culture. Colonial conditions are also discussed in terms of their impact and limitations in the transition of styles.