수종의 재생 술식 시행이 매식체 근원심부의 골재생에 미치는 영향

이명자,임성빈,정진형,홍기석,Lee, Myung-Ja,Lim, Sung-Bin,Chung, Chin-Hyung,Hong, Ki-Seok 대한치주과학회 2005 Journal of Periodontal & Implant Science Vol.35 No.2

The successful implantation necessitate tissue regeneration m site of future implant placement, there being severe bone defect. Therapeutic approaches to tissue regeneration in the site have used bone grafts, root surface treatments, barrier membranes, and growth factors, the same way being applied to periodontal tissue regeneration. Great interest in periodontal tissue regeneration has lead to research in bone graft, guided-tissue regeneration, and the administration of growth factors as possible means of regenerating lost periodontal tissue. The blood component separated by centrifuging the blood is the platelet-rich plasma. There are growth factors, PDGF, $TGF{beta}1$, $TGF{beta}2$ and IGF in the platelet-rich plasma. The purpose of this study was to study the histopathological correlation between the use of platelet-rich plasma and the healing of bone defect around implant fixture site. Implant fixtures were inserted and graft materials were placed into the left femur of in the experimental group, while the control group received only implant fixtures. In the first experimental group, platelet-rich plasma and BBP xenograft were placed at the implant fixture site, and the second experimental group had platelet-rich plasma, BBP xenograft, and the e-PTFE membrane placed at the fixture site. The degree of bone regeneration adjacent to the implant fixture was observed and compared histopathologically at 2, 4, and 8 weeks after implant fixture insertion. The results of the experiment were as follows: 1. Bone remodeling in acid etched surface near the implant fixture of all experimental groups was found to be greater than new bone formation. 2. Bone remodeling in acid etched surface distant to the implant fixture of all experimental groups was decreased and new bone formation was not changed. 3. Significant new bone formation in machined surface near the implant fixture of bothl experimental groups was observed in 2 weeks. 4. New bone formation in machined surface distant to the implant fixture of both experimental groups was observed. Bone remodeling was significant in near the implant fixture and not in distant to the implant fixture. The results of the experiment suggested that the change of bone formation around implant. Remodeling in machined surface distant to the implant fixture of both experimental groups, and new bone formation and remodeling near the implant fixture were significant.

익산 웅포 찻잎을 이용한 발효차 추출물의 미용효과

이명자(Lee Myung-ja);최두복(Dubok Choi);이희경(Lee Hee-kyung) 국제차문화학회 2021 차문화ㆍ산업학 Vol.52 No.-

본 연구는 전라북도 익산 웅포에서 채취한 찻잎을 이용해서 발효한 차가 미용 화장품 소재로서 가능성이 있는지 검토하기 위해 여러 추출물에 대한 세포독성, 아질산 제거 효과, 티로신아제 활성, 엘라스타아제 활성, 및 콜라겐아제 활성을 각각 분석하였다. 발효차는 유기용매에 의한 추출물의 종류와 관계없이 세포독성이 100, 300 및 500μg/mL 범위의 농도에서도 전혀 존재하지 않았다. 티로신아제 저해 활성은 대조군인 ascorbic acid보다 저해 활성이 낮았지만 여러 추출 중 에탄올 추출물이 가장 우수효과가 나타났다. 콜라겐아제 및 엘라스타아제 저해 효과를 검토한 결과 발효차의 에탄올 및 열수 추출물이 농도 의존적으로 저해 활성이 증가하였다. 따라서 발효차 열수 및 에탄올 추출물은 농도가 증가함에 따라 피부 미용효과도 증가하였다. 특히, 여러 추출 중에서 에탄올 추출물은 미백 및 주름 개선 효과가 다른 추출물보다 높아 기능성 화장품 소재로서 가능성을 나타내었다. 에탄올 및 열수 추출물은 화장품제조 분야에서 사용되는 일반적인 유기용매를 이용한 추출 방법에 비교하면 안전성이 매우 높고 또한 피부에 자극이 낮기 때문에 기능성 화장품 소재로 사용 가능성이 있다고 생각한다. 그러나 미용 화장품 소재로서의 사용하기 위해서는 구체적인 임상에 대한 연구개발이 필요하다. This study analyzed cytotoxicity, tyrosinase, collagenase, and elastase activities using various extracts to examine whether the tea fermented from tea leaves collected from Ungpo, Iksan-si, Jeollabuk-do, could be a cosmetic material for beauty. Fermented tea did not exist at all at concentrations in the 100, 300 and 500μg/mL ranges, regardless of the type of extracts. Tyrosinase inhibitory activity was less active than the ascorbic acid as the positive control group. However, among several extracts, the best effect was shown in ethanol extract. The results of reviewing collagenase and elastase inhibitory effects showed that ethanol and hot water extracts of fermented tea were compared to controls, resulting in concentration-dependent low activity increase. Therefore, hot water and ethanol extractions using fermented tea also increased the skin beauty effects as concentrations increased. In particular, ethanol extract showed higher whitening and wrinkle improvement effects than other extracts, indicating their potential as functional cosmetic materials. Ethanol and hot water extracts of fermented tea are highly likely to be used because they are very safe and less irritating to the skin compared to general organic solvents used in cosmetics manufacturing. However, the specific clinical research and development are needed to use it as a cosmetic material for beauty.

Effect of Green Tea Seed Extract on the Skin Whitening Activity

이명자(Lee Myung-ja);최두복(Dubok Choi);이희경(Lee Hee-kyung) 국제차문화학회 2021 차문화ㆍ산업학 Vol.53 No.-

지식의 구조 신념에 따른 수학 문제 해결의 차이

이명자 ( Myung Ja Lee ),문병상 ( Byung Sang Mun ) 경북대학교 중등교육연구소 2008 중등교육연구 Vol.56 No.3

지식의 구조에 관한 신념과 수학 문제 해결간의 관계를 연구하기 위하여 초등학교 6학년 학생을 대상으로 지식의 구조에 관한 신념간에 수학문제의 득점, 역연산오류율과 계산오류율에 어떤 차이가 있는가를 알아보았다. 연구결과, 통합된 지식 신념을 많이 가지고 있는 아동들이 단순한 지식 신념을 많이 가지고 있는 아동들보다 수학문제의 득점은 높고, 역연산오류율과 계산오류율은 낮았다. 이와 같은 결과는 소박한 인식론적 신념을 가지고 있는 아 동들이 직접적인 변형 접근을 사용하였기 때문에 수학문제를 정확하게 해결하지 못하였으며, 이에 반해, 세련된 인식론적 신념을 가지고 있는 아동들은 문제모형 접근을 사용하였기 때문에 수학문제를 정확하게 해결한 것으로 해석할 수 있다. The purpose of this study was to test a difference of children`s knowledge structure beliefs on mathematical problem solving. Epistemic beliefs were consisted of nature of knowledge(certainty of knowledge, simplicity of knowledge) and nature of knowing(source of knowledge, justification of knowing). The subjects of this study were 167 elementary school children. They were assigned to two group according to result of epistemic beliefs test. The scale of epistemic beliefs were consisted of 48 items and mathematical word problem solving test was consisted of 30 items. It was analysed by independent samples t-testing method using SPSS/PC 14.0. Main findings of this study were as follows: Epistemic beliefs affected mathematical word problem solving. Children who had epistemic beliefs of integrated knowledge attained more score, lower reversal error and computation error of mathematical word problem solving than children who had epistemic beliefs of simple knowledge. It were discussed about epistemic beliefs and two approach of mathematical word problem solving.

한국전쟁 전후 시기, 남북한의 냉전이데올로기 영화에 재현된 근대화담론의 비교

이명자 ( Myung Ja Lee ) 한민족문화학회 2012 한민족문화연구 Vol.40 No.-

한국전쟁은 2차대전이 후 반공보루를 구축하려는 미국과 공산블럭을 구축하려는 소련의 의지가 한반도라는 지역에서 전면적으로 충돌한 사건으로 전후 두 한국의 분수령이자 현대 한국의 출발점이다. 전쟁 전 신탁통치를 둘러싼 논쟁에서 단초를 마련한 냉전이데올로기로서 반공주의와 반제국/반미주의는 한국전쟁을 통해 자생력을 갖게 되었다. 반공과 반제국/반미는 한국전쟁 이후 남북한의 내부 발전방향의 경로의존성(path dependency)을 부과했다. 경로의존성이란 현재의 변화가 과거의 제약과 가능성에 영향을 받아 이루어진다는 것으로 한국전쟁 후 남북한이 민족을 대신해 주목한 근대화 논의도 반공주의와 반제국/반미에서 결코 자유로울수 없었다. 한국전쟁 이래 현재까지 남북한이 각각 추구한 국제화 대 민족화, 세계화대 자주화, 탈한국화 대 한국화의 근대화 전략은 반공과 반제국/반미사상과 근대화 논의가 길항하여 형성된 것이라 할 수 있다. 전쟁과 분단으로 패착에 이른 근대민족국가에 대한 염원은 신생 남북한에서 냉전 이데올로기에 기반한 근대화 경쟁을 가속화시켰다. 남한의 자유민주주의와 북한의 인민복지를 앞세운 민주주의는 각각 개인과 집단을 민주주의가 추구해야 할 목표로 설정하였다. 한편 한국전쟁 후절대빈곤 상태에서 무엇보다 중요한 것은 경제적 안정이어서 남북은 산업화를 두고 경쟁을 벌였다. 그러나 물적 기반이 없는 상태에서 남한은 미국의 원조물자를 기반으로 경제안정을 꾀했고 북한은 한국전쟁을 통해 획득한 정신주의에 기반해 자주적 성장을 달성하려고 했다. 그 결과 남한에서 친미물질문화가 확산되고 북한에서 물리적 한계를 정신력으로 극복하자는 자력갱생원리가 만들어졌다. 이 과정에서 남한의 엘리트 그룹은 한국전쟁 후 친미인텔리 출신으로 규정되었고 북한에서는 노동계급이 김일성 정권의 지지세력이 되어 군부와 더불어 엘리트 그룹을 형성했다. 역설적이게도 남북한 공히 민주주의를 비롯한 근대화 논의가 각각의 권위주의체제를 형성하는 기반이 되었다. 남한은 자유민주주의를 공산주의, 전체주의에 대한 대항논리로 만들었다. 그 과정에서 자유민주주의는 반공주의와 대등한 것으로 인식되어 개인의 자율성을 위한 담론이 아닌 반공이데올로기의 한 담론이 되어 오히려 개인을 억압하는 논리로 작용했다. 북한에서 집단을 통한 민주주의의 성취는 거대 강국 미국에 대항해 내부단결을 요구했고 그 과정에서 개인의 요구는 항상 유예되어야 했다. 전쟁과 천리마운동을 통해 강조된 정신주의는 항일혁명전통과 결합해 김일성 주체사상의 기반을 마련했다. 자력갱생원리와 정신주의는 집단을 통해 개인의 권리를 옹호한다는 북한의 초기 설정을 배반해 오늘날 북한의 경제적 파산과 전체주의적 국가 성격을 구축했다고 할 수 있다. The Korean War was a collision between America and Soviet that they tried to build a bulwark against communism and imperialism on the Korean Peninsula after World War Ⅱ. The Korean War was the divide and starting point of modern two Koreas. Anti-communism and anti-imperialism/anti-Americanism sprouted out a heated controversy of the UN trusteeship. Anti-communism and anti-imperialism/anti-Americanism imposed a path dependency on the developing direction of Korea after the Korean War. A path dependency is that a society`s change has been influenced possibility and restriction from the past. Two Koreas modernization were not free from the cold war ideologies, anti-communism and anti-imperialism/anti-Americanism after the Korean War. South and North Korea`s modernization strategies, that two Koreas pursued internationalization vs nationalism, globalism vs independence, getting out of Korea vs Koreanization, and the cold ideology kept up each other. Korea has tried to build modern national state since liberation but it failed and ended up the Korean War and the tragic division of the Korean Peninsula. Two Koreas drove modernization based on the cold war ideology instead of the unification of nation. South Korea advocated liberal democracy as an individual while North Korea contended democracy as a group. On the other hand, two Koreas entered into an economic competition to struggle for hegemony. In an economic vacuum, South Korea planed taking-off of the economy by a US aid while North Korea contrived self-supporting economy through a will and idealism. After all, South Korea society got to have a pro-American culture and North Korea sought self-supporting economic revival. The pro-American intellectual class led South Korea while a low-class laborer supported North Korea in the process of modernization. It may sound paradoxical, but the discourse of modernization such as democracy, industrialization and class defended two Korean authoritative governments. Anti-communism packed in liberal democracy, so it became an ideology to try to mobilize or repress a person in South Korea. The principle of self-supporting economy and idealism became a doctrine in North Korea, finally it backed up Juche ideology and a totalitarian state.

북한 주체영화의 여성성 재현에서의 변화 연구

이명자(Lee Myung Ja) 한국영화학회 2004 영화연구 Vol.0 No.23

North Korea makes an effort to change from 'classical socialism' to 'market socialism' , Class socialism has two features which is connected with state-drive production and patriarchal distribution, North Korea has been established classical socialism since 1967. Juche' films lay the base of classical socialism which have male hero, production, development, problems-solution. But new regime gives up state-distribution to individual family and individual taking market-price. Especially new regime put too heavy tasks upon women for example housekeeping, social labors, taking care baby which are state' obligations at old regime, What is worse, economic problem more ill and woman have more tasks. Paradoxically, femininity is begin to represent at films which juche film had been repressed. It is show up feminine narrative, feminine values and voices etc. Now, North Korea woman is placed in paradoxical position, which ask for her to earn family's living and have herself voices.

유추에 의한 문제해결 : 직후재생과 지연재생

이명자(Myung -Ja Lee) 대한사고개발학회 1995 The International Journal of Creativity & Problem Vol.5 No.2

The primary purpose of this study was to determine the conditions under which a student is most likely to recall the solution to a familiar problem and transfer that solution to a new, analogous problem. Three aspects of the · analogical problem solving situation which were expected to play an important role in analogical problem solving are: the availability of a good analog, the time interval between when an analog is learned and when a transfer problem presents itself, and the availability of prompts to use the analog. One hundred and twenty eight university students were asked to solve analogical story problems. As expected, subjects who studied a warm - up problem consisting of an analogous problem and solution performed better on the transfer problem than subjects who studied a nonanalogous warm - up problem and solution. Contrary to expectations, however, the time interval between analog learning and transfer had no effect on the subjects' solution of the target problem. Similarly, the presence of a prompt to recall the warm - up had no effect on the subjects' solution of the target problem.

체육전공대학생의 스포츠 가치관과 스포츠 자신감 및 스포츠 몰입행동간의 구조적 관계

이명자(Lee, Myung-Ja) 한국사회체육학회 2014 한국사회체육학회지 Vol.0 No.58

The purpose of the study was to investigate the influence of soprts value and sport confidence on sport commitment behavior of university students majoring in physical education. Participants for this study were 251 university students majoring in physical education. For the sttaistical analyses, t-test, correlation analysis and structural equation modeling were used. Male students showed higher degree in the sport commitment behavior and some sub-factors of sports value than female studentsT. he sports value has significant direct influence on the sports commitment behaviors as well as indirect effect via the sports confidence. The influence of sports confidence was also statistically significant on both the cognitive commitment and the behavioral commitment. Using pairwise parameters comparison, no difference between male and female were found in the relative magnitude of path coefficients for the influence of sporvt alue on sport commitment. No difference were also found in the relative magnitudes of path coefficients forth e influence of sport confidence on the sport commitment as well as for the influence of sport value on sport confidence. As for test for the factorial invariance through multi-group confirmatory factor analysis, no statistically significant difference were found among the hypothetical structural models from unconstrained model tom easurement residual model. Therefore the structural relations among sports value, sport confidence and psort commitment behavior were very similar between male and female university students majoring in physical education.

멀티미디어 학습 자료의 제시 방법이 학업성취에 미치는 영향

이명자(Myung Ja Lee),황진석(Jin Seok Hwang) 한국교육심리학회 2007 敎育心理硏究 Vol.21 No.2

청소년의 비합리적 신념과 자아존중감, 지각된 부모양육태도가 그들의 분노 표현방식에 미치는 영향

이명자(Myung Ja Lee),채유경(Yu Kyong Chae),홍경자(Kyung Ja Hong) 한국상담학회 2000 상담학연구 Vol.1 No.1

This study was to investigate the effects of the adolescents` irrational beliefs, self-esteem and their perceived parenting attitude on their modes of anger-expression through meditation of the situation evaluation and their anger level. 1he subjects were 614 male and female, middle and high school students in N. city and G. city. The hypothetical model exploring the relationships among the variables on their anger expression modes was verified by path analysis. The results of the study is as follows: Firstly, it was proved that the adolescents` irrational beliefs affected directly in increasing their modes of anger suppression(anger-in) and expression(anger-out). It also affected indirectly in increasing their modes of anger suppression, expression and moderation(anger-control) through meditation of anger level. Secondly, it was proved that their self-esteem affected directly in increasing their anger moderation Thirdly, it was proved that their perceived parents` parenting attitude affected directly in increasing their anger suppression. Fourthly, it was proved that their parents` modeling affected directly in increasing their anger expression It also affected indirectly the expression through mediation of situation evaluation and anger level. Fifthly, it was proved that justification in situation evaluation affected directly in decreasing their anger level. The justification seemed to mediate their parents` modeling and their anger level. Based on the results, it was suggested that justification of situation evaluation would mediate their anger level, and their anger level would mediate their modes of anger expression It was concluded that adolescents` anger expression modes would be an outcome of their irrational beliefs, self-esteem and learned behavior from their parents concerning the rules of anger expression.