• Bulletin of the Korean Chemical Society
• /
• v.10 no.3
• /
• pp.223-226
• /
• 1989

The chemical reactivity of 5,7-dimethoxycoumarine with adenosine has been calculated by the frontier electron and PPP-Cl MO methods. Results suggest that the major reactivity of the 5,7-dimethoxycoumarin is highest at the carbon-4 (position 4), whereas the electrophilic reactivity is generally spread all over the 5,7-dimethoxycoumarin molecule. These results are consistent with the experimental photoaddition reaction products. The small change of bond orders on excitation does not give enough reactivity to triplet states or the efficient intersystem crossing from $T_1\;to\;S_0$ inhibits photoaddition of 5,7-dimethoxycoumarine to adenosine. Although the relative intensity of the singlet band appears to be considerably higher than the triplet band intensity, its integrated intensity, i.e. oscillator strength, is comparable to that of the 5,7-dimethoxycoumarin and adenosine bands.

• Journal of the Korean Applied Science and Technology
• /
• v.38 no.6
• /
• pp.1667-1677
• /
• 2021

In this study, we tried to investigate the relationship between the cosmetology major student's major satisfaction and the professionals by analyzing the effect of the cosmetology major student's major satisfaction on the beauty professional hall. Research Results It was found that there is a correlation (p <0.001) between the degree of satisfaction of college students in the hair beauty department and the beauty professionals (p <0.001), and the satisfaction of the department is "specialty" t = 4.625 (p =). .000),'Occupational recognition' t = 3.152 (p = .002), major value is'specialty' t = 2.330 (p = .021),'professional activity' t = 2.438 (p = .015), 'Occupation recognition' t = 4.843 (p = .000), university student activity adaptation is a subordinate factor of the cosmetology profession, "professional activity" t = 2.746 (p = .006), "occupation recognition" t = 4.303 ( Appearing as p = .000), it was found that the degree of satisfaction of college students in the hair beauty department has a significant effect on beauty professionals. For cosmetology college students, major satisfaction not only leads to satisfaction with the university and department, but also to self-satisfaction and cosmetology job confidence, allowing them to adapt to social life with a positive impact, and cosmetologists are hair With the values and attitude toward the beauty profession, you will be able to become a professional officer when you are a university student majoring in cosmetology. Through the research results, the formation of a positive professional hall for college students majoring in hair beauty and the satisfaction of the major will be enhanced, and the self-development of students, as well as professors and educational relations, will be established so that beauty professionals can be established through correct theory and practical education. Education and continued guidance on the professional ethics and values of the person is considered necessary.

• Journal of the Korea Safety Management & Science
• /
• v.19 no.4
• /
• pp.189-208
• /
• 2017

This study is for figuring out major components of construction quality infrastructure and suggesting improvement plan by benchmarking global best practice model and analyzing gap between the model and sample practice. Based on improvement plan, researcher could derive major characters and components of construction quality infrastructure, and also about the priority among core competency components of construction quality experts. The result showed that the 'human resource' was ranked the best priority followed by 'method' 'environment', 'equipment' among major characters and components of construction quality infrastructure. Also, for core competency components of construction quality experts, 'number of years in work places' was the best priority, and the 'professional knowledge on engineering' was another priority ranked. Far from general perception on competency components, 'academic education' ranked the last. It may allude that the current education system in this country is not effective in developing competency of quality engineers. In summary, this study shows professionalism of quality engineer is the most important thing in all the components.

• Journal of Fisheries and Marine Sciences Education
• /
• v.18 no.3
• /
• pp.364-373
• /
• 2006

Each roles of school community members as principals, assistant principals, head teachers, teachers, parents of pupils, and persons of regional society by questionnaire method. The opinions of 805 subjects of school members in Pusan city by stratified random sampling are analyzed. The results of analysis are as follows : The major roles of principals in school community are considered as (1) converging various schools members' opinions and reflecting them to school management (2) setting manifest educational goals of school and projecting visions of school development in the future (3) managing efficient, rational school. The major roles of assistant principals in school community are defined as (1) mediating and co-ordinating relation between principal and teachers (2) combing and harmonizing school members (3) dividing and co-ordinating school members' roles. The major roles of head teachers are defined as (1) driving departmental services and acting teaches' professional competency (2) mediating relation between school managers and teachers (3) converging teachers' opinions, delivering and reflecting them to the school managers. The major roles of teachers are defined as (1) supporting pupils' growth (2) completing teaching-learning activities (3) devoting pupul discipline. The major roles of pupils in school community are (1) believing schooling and teachers (2) self-initiative, positive learning activities (3) comprehending, caring, co-operating others. major roles of parents of pupils in school community are (1) believing schooling and teachers (2) The participating schooling (3) supporting schooling. The major roles of persons of regional community in school community are defined as (1) concerning and believing schooling (2) supporting and co-operating schooling (3) comprehending and loving schooling.

• Hwankyungkyoyuk
• /
• v.23 no.1
• /
• pp.112-120
• /
• 2010

The study first reviewed the significance, enactment process, and future challenges for growth of the Environmental Education Promotion Act first proclaimed in Korea in March, 2008. Then it sorted out the drafts about the plans for the overall growth of environmental education, which were researched and developed in the national level Environmental Education Master Plan based on the act, their major tasks in each field, and research plans to be promoted. Its findings will provide reference to the efficient operation of the act and the plans for the overall growth of environmental education.

• Journal of Engineering Education Research
• /
• v.18 no.6
• /
• pp.38-45
• /
• 2015

This study aims to conduct a case study of the Science, Technology, Engineering, Arts, and Mathematics (STEAM) outreach program development and their application. This program was operated by 184 middle and high school students at C University on October 2014. The major results of these studies were as follows: First, The theme of the outreach program consisted of four engineering areas, aerospace engineering, chemical engineering, architectural engineering, and mechatronics (robot) engineering; moreover, the materials for the students' workbook, the guidebook for teachers, and the program operation manual for staffs in a university were developed by working with four authors and ten subject matter experts. Second, the satisfaction level with the contents and activities was ranged from 4.24-4.31 out of 5 points. Third, the vitalizing activation plan was discussed for the sustainable development and operation of the STEAM outreach program.

• The Mathematical Education
• /
• v.51 no.2
• /
• pp.161-171
• /
• 2012

Generally mathematics is regarded as a subtle subject to grasp their true meaning. And teacher's personal conceptions of mathematics influence greatly on the teaching and learning of mathematics. More over often teachers confess their difficulties in explaining the true nature of mathematics. In this paper, applying the theory of epistemology, we tried to search factors that must be counted important when trying to understand the true nature of mathematics. As results, we identified five characteristics of mathematical knowledge such as logical reasoning, abstractive concept, mathematical representation, systematical structure, and axiomatic validation. Next, we tried to investigate math education major students' conception of mathematics using these items. To proceed this research we asked 51 students from three Universities to answer their opinion on 'What do you think is mathematics?'. Analysing their answers in the light of the above five items, we got the following facts. 1. Only 38% of the students regarded mathematics as one of the five items, which can be considered to reveal students' low concern about the basic nature of mathematics. 2. The status of students' responses to the question were greatly different among the three Universities. This shows that mathematics professors need to lead students to have concern about the true nature of mathematics.

• Child Health Nursing Research
• /
• v.26 no.4
• /
• pp.454-462
• /
• 2020

Purpose: Sudden unexplained infant death (SUID) is a major contributor to infant mortality, and pediatric nurses have the responsibility to educate parents on SUID-reducing strategies. This study was conducted to measure pediatric nurses' knowledge of SUID-related safe sleep practices (K-SSSP) and infant cardiopulmonary resuscitation (K-ICPR). Methods: In total, 136 pediatric nurses were administered a survey including K-SSSP (13 items), K-ICPR (5 items), confidence in K-SSSP education (1 item; 5 points), and other factors relating to SUID experiences or education. Results: The correct answer rates of the K-SSSP and K-ICPR were 62.6% and 62.5%, retrospectively. The mean score for confidence in K-SSSP education was 2.6±0.9. Only 18 nurses (13.2%) responded that they educated parents on the content of the K-SSSP, while 76 nurses had received education on SUID. Positive relationships were observed between K-SSSP scores and higher education, between K-ICPR scores and having own child(ren) and clinical experience, and between confidence in K-SSSP education and higher education or having one's own child(ren). Nurses caring for newborns performed more SUID education than nurses working in other units. Conclusion: There is a profound need to implement a systemic educational program on SUID and strategies to reduce SUID for pediatric nurses.

• Journal of Korean Elementary Science Education
• /
• v.29 no.4
• /
• pp.474-483
• /
• 2010

In this study, we investigated preservice elementary school teachers' awareness of students' misconceptions about several science topics, and the variables influencing their awareness. Seniors (N=106) from an university of education were asked to predict elementary school students' misconceptions on science topics such as phase changes and dissolution. Their conceptions about teaching and learning were also measured. The results indicated that the preservice teachers' predictions about the kinds and/or the ratios of students' misconceptions were different from those reported in previous studies. The low level preservice teachers in terms of the degrees of possessing traditional conception about teaching and learning predicted more students' common misconceptions. The degrees of preservice teachers' constructivist conception about teaching and learning and their major, however, did not significantly influence the numbers of common misconceptions predicted.

• Journal of the East Asian Society of Dietary Life
• /
• v.13 no.3
• /
• pp.155-166
• /
• 2003

This study was conducted to investigate the dietary behavior and health-related lifestyles of university students in Incheon arear Self administered questionnaires were collected ken 179 food and nutrition major and non-major students. Statistical data analysis was completed using a SPSS v.10.0 program. The results are summarized as follows: The average weight, height, BMI and PIBW of the major and non-major male and female students were 69.89kg, 172.89cm, 23.4 and 106.49 ; 67.27kg, 173.98cm, 22.2 and 101.35 ; 50.61kg, 161.20cm, 19.53 and 92.25 ; 53.77kg, 161.53cm, 20.56 and 97.18, respectively. The breakfast skipping ratio of the subjects were very high, which was mainly due to the reason“lack of time”More than 75% of male students and 61% of female students responded to have lunch at university canteens or restaurants around campus regularly. About 56% of male students and 68% of female students responded to have dinner irregularly, which mainly caused by the reasons“irregularity of lecture”and “appointment with friends”. The ratio of snacks intake of the subjects were high; Ramyun was the snack item taken the most by the male students and fruits and cookies by the female ones. More than 50% male students and 2% of female students were smokers. A half of students dunk alcohol once or twice a week. The dietary behaviors and health-related lifestyles between major and non-major male students tended to be very similar. The major female students showed more health-oriented dietary behaviors in comparison with the non-major ones. Therefore, they should have a major-oriented and practically organized nutritional education program to correct their dietary behaviors and health-related lifestyles fur health.