• Journal of Life Science
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• v.28 no.2
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• pp.141-147
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• 2018

This study aimed to analyze the contents of rutin, procyanidin B3, quercetin, and kaempferol, known to have antioxidant, anti-inflammatory, and anti-carcinogenic effects, among the polyphenol types contained in grape pruning stem extracts (GPSE). It utilized grape stems discarded after harvest to measure the effects of GPSE on skin moisture, inhibition of skin cell proliferation, and anti-inflammatory activity on the damaged skin of HR-1 mice induced with ultraviolet B (UVB), and to verify the applicability of GPSE as a material for functional food and functional cosmetics. The polyphenol was extracted from grape pruning stems with 80% EtOH, and then the extract was used while storing at $-20^{\circ}C$, after filtering, concentrating, and freeze-drying it. The content of an active ingredient of GPSE was analyzed using high performance liquid chromatography (HPLC). From 53 kg of the grape pruning stem specimen, 2.34 kg of the EtOH fraction extracts were extracted to achieve a 4.42% yield ratio. Analysis of the active ingredients showed 0.28 mg/g of procyanidin B3, 12.81 mg/g of rutin, 0.51 mg/g of quercetin, and 8.24 mg/g of kaempferol. After UVB irradiation on the dermis, to confirm the degree of inhibition of collagen synthesis, we examined the protein expression of MMP-9 using immunohistochemical staining. The results of this study confirm the existence of active polyphenol types, such as rutin, kaempferol, quercetin, and procyanidin B3, in GPSE. Moreover, the study found that GPSE has anti-collagenase effects and it decreases the effects of UV damage on skin barrier function. GPSE is a functional ingredient with a potential for skin protection effects, and it has high utilization potential as an ingredient for functional cosmetics.

• KASI NEWSLETTER
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• s.49
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• pp.1-4
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• 2005

2005년 시무식/ 2006년도 월력요항 발표/ 이사장 방문 신년간담회 개최/ 제26차 경영협의회 개최/ 지역천문대 2005 상반기 관측일정 확정/ 양홍진 박사 논문, A&Ap 논문 표지그림으로 선정/ 2005년도 연.학 협력사업/ '05 동계교원연수/ 연구원 방문의 날 행사/ 청소년 혜성축제 개최/ 제13회 천체사진공모전 개최/ 우수인력확보 및 사기진작정책 시행/ 직원동정/ 학회소식/ 콜로키움/ 위성측위시스템의 과거, 현재 그리고 미래

• Korean Journal of Comparative Education
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• v.24 no.3
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• pp.157-177
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• 2014

The importance of selection methods of secondary school teachers have gathered attention due to their enormous influence on the pre-service education programs. However, scholars and practitioners are skeptical about the effectiveness of the measures, especially under the condition of teacher oversupply found in South Korea and China. Based on this problem statement, this study seeks to compare the secondary teacher employment methods of the two countries to better understand the situations as well as to draw implications for improvement. We reach the following conclusions through comparative analyses. First, the reforms of the teacher employment system in both countries have been triggered by the quantitative supply concerns not by the qualitative concerns. Second, both countries require teaching license as a precondition of employment, while their quality assurance measures for the license reveal critical limitations. Third, both countries have attempted to improve selection methods; nevertheless, oversupply of prospective teachers makes objectivity and fairness more important than the appropriateness. Based on the conclusions, policy implications focusing on the quality-oriented approach are suggested in order to employ effective secondary teachers who can contribute to the quality improvement of school education.

• 대한공업교육학회지
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• v.36 no.2
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• pp.257-272
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• 2011

The field of Construction Engineering leads 1970's industry of the Korea. As a result of development of construction technology, It secure national competitiveness winning overseas contracts many kinds of plant, building and so on. In this situation, it is the most important task to cultivate and select construction teacher to train construction education and to foster construction skilled workers be going into the field of construction. This Study attempts to offer useful implications about the improvement of the Teacher Certification Examination through analyzing that will have a strong influence and be a standard in educational direction to cultivate construction teacher.

• Journal of The Geomorphological Association of Korea
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• v.18 no.2
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• pp.1-14
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• 2011

Remarkable development of sand bars is an important characteristic of fluviatile landform of Korea. Their development owes, in one part, to the supply of abundant sandy materials to river valley floor, originated from the weathering of essentially granitic rocks, distributed almost all over the country. It owes, in other part, to river valley disposition presenting many angular sinuosity guided by fracture grid, impeding regular migration of sandy materials along valley floor. Besides, high amplitude of river discharge fluctuation of the country plays is proved to be favorable hydrological factor for the development of the sand bars. The sand bars play important roles in favor of river hydro-ecological environment. They mitigate the amplitude of discharge fluctuation regime. In flood spell, sand grains in the main channel migrate so as to broden wet section. At the spell of low water level, they newly accumulate as to impede rapid stream discharge. Especially high quantity of reserved water in porous space of sand bar is preciously available both for human livelihood and for ecological environment.

• Journal of Teachers' Pension
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• v.3
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• pp.279-305
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• 2018

공적연금제도는 장기적 유지 및 운영을 위해 기금의 재정건전성 및 지속가능성 진단을 목적으로 재정계산제도를 운영하고 있다. 정확한 재정계산은 매우 중요하며 이를 위한 선행작업으로 재정계산에 요구되는 기본 가정들을 보다 합리적으로 추정해야 할 필요가 있다. 본 연구는 로지스틱 회귀분석(logistic regression)을 이용하여 사학연금의 재정계산에 적용되는 다양한 기초율들 중 퇴직률을 산출하는 것에 그 목적이 있다. 사학연금은 현재 퇴직률을 교원 및 직원에 대하여 각 성별로 총 4개 집단을 구분하여 각 집단별 가입연령과 재직기간에 따라 산출하고 있다. 그러나 본 연구에서는 학교급 등 퇴직률 산출에 있어 보다 유의한 집단 구분이 있는지를 확인하고 보정의 어려움을 피할 수 있는 하나의 대안으로서 로지스틱 회귀분석을 이용하여 퇴직률을 산출해 보았다. 또한 우수한 모형을 판별하기 위해 통계적으로 우수한 모형보다는 실무적으로 사학연금 재정추계에 적합한 모형을 찾는 것을 목표로 하여 퇴직률을 추정한 값을 제시하였다.

• 대한공업교육학회지
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• v.39 no.1
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• pp.164-188
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• 2014

The purpose of this study is to investigate the perception of undergraduates of the college of education on the importance of certification areas and factors suggested by the certification system at each department level as well as the college as a whole, in order to come up with measures for further improvement. The specific objectives of this study are first, verifying different perception on the importance of certification areas and factor per department, second, verifying different perception on the importance of certification areas and factor per grade. The population of this study is undergraduates of the college of education at A University, and the survey on the different perception on the importance was conducted on 758 students of 10 departments. Total 800 copies of survey were distributed, and 299 copies or 37.3% were retrieved. First, it was found that undergraduates of the college of education at A University highly recognize the necessity of a new system to produce excellent teachers. when it comes to different department, in the area of teaching personalities, there is difference in the importance of teaching aptitude test and completion of social intelligence development program. In the area of teaching expertise, there is different perception in the importance of completion of curriculum education subjects per major, completion of curriculum contents per major, and participation in teaching demonstration contest. In the area of student guidance expertise, there is difference by department in completion of creative character development related education programs and "teaching practice" course. In the area of communication skills in the information society, minimum score requirement for a second foreign language is considered less important than others. Second, as for grade, freshmen highly recognize the importance of validity of teaching training course, integrity of the course, validity of the teaching training course in producing excellent teachers, graduates' job performing ability development as a teacher, appropriacy of curriculum of the college of education in producing excellent teachers, compared to other grades. In particular, seniors consider the necessity of a new system to produce excellent teachers the most.

• Journal of Digital Convergence
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• v.10 no.7
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• pp.1-10
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• 2012

The purpose of this study is to present a stabilized supporting plan of the special high-school in Gwangju area. For this, It is to analysis the general present situation and explore the supporting plan in Gwangju area. Based on the findings, the study showed the future supporting plan and the current events of the special high-school in Gwangju area.

• Journal of The Korean Association of Information Education
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• v.13 no.2
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• pp.135-144
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• 2009

The purpose of this study was to explore strategies for promoting distance education program and for providing total information for teachers about curriculum of distance educational training institute. In 2007, there were 65 institutes of distance education training, but we don't have enough information about curriculum of the institutes. To analyze curriculums of the institutes, it had been selected 33 institutes of 65, and 567 of performance training programs, 317 of optional programs, and 23 of free training programs. The following results were obtained : (1) It calls for easy accessibility to distance educational training institutes (2) It has to overcome biased status that private institutes have more courses than government institutes'. (3) It will be needed to make diverse courses for teacher's capabilities. (4) It calls for course development of several subject matters (5) It will be needed to maintenance for running course continuously. (6) It has to make supporting plan for excellent courses by government.

• 대한공업교육학회지
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• v.31 no.2
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• pp.111-127
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• 2006

The purpose of this study is to analyze current recruiting examination and to categorize and construct test item that assess a variety of Mechanic Metal teachers in technical high school for appointing new Mechanic Metal teacher. The future developmental directions in this study are as follows: First, the examination for appointing secondary school new Mechanic Metal Teacher reflects the curriculum of the teacher education and technical high school, must be nomalize. Second, the rational readjustment of the basic necessary subjects for Machinery Metal recruiting examination is required. Third, the Mechanic Metal recruiting examination must prepare the criteria for the domain ratio of presenting problems and improve with level of presenting the question items which demands a knowledge, application and critical thinking. Fourth, in order to avoid the bias of the some subject tendency with committee making questions of different domain, more participation of a committee making questions is required. Fifth, the practical evaluation must be executed by the effective method to be able to make up for the limit of paper and pencil tests Sixth, as the long-term prospect to secure the professionalism of teacher, the recruiting examination of teachers must be carried out with the Machinery and Metal subject, respectively.