NiTi Rotary Instruments에 의한 근관형성이 치근단부 근관형태에 미치는 영향

오현정,홍찬의,조용범,Oh, Hyun-Jung,Hong, Chan-Ui,Cho, Yong-Bum 대한치과보존학회 1997 Restorative Dentistry & Endodontics Vol.22 No.1

During preparation of narrow curved canals, procedural accidents such as, ledge, zipping, and transportation are frequently encountered and may lead to failure of endodontic therapy. To reduce these procedural errors and efficiently manage curved canals, various modifications in instrumentation technique and the design and flexibility of instruments have been advocated. This study compared the maintenance of the original canal curvature, cross sectional canal shape, and preparation time during instrumentation with stainless steel hand (K-Flexo) file, and nickel-titanium rotary files (Profile and Lightspeed). Thirty resin blocks with simulated curved canals of 20~25 degrees were used and divided into three groups of 10 each. In group 1, canals were instrumented using a quarter turn/pull technique with K-Flexofiles. Group 2 canals were prepared with rotary NiTi Profiles. Group 3 was prepared with rotary NiTi Lightspeed instrument. Before and after instrumentation, all canals were scanned using stereo microcope, FlexCam camera, and Photoshop 3.0 computer program. The results were as follows : 1. All groups showed some loss of canal curvature after instrumentation. Average loss of canal curvature was 8.6 degrees for K-Flexofile, 7.7 degrees for Profile, and 5.8 degrees for Lightspeed. Lightspeed exhibited significantly less curvature loss than K-Flexofile (p<0.05). 2. At the apical 1-mm level, Profile produced significantly rounder canals than Lightspeed (p<0.05). At the 3-mm level, Profile and Lightspeed exhibited significantly rounder canals than K-Flexofile (p<0.05). 3. Preparation with Lightspeed was significantly faster than Profile and K-Flexofile, and Profile was faster than K-Flexofile (p<0.05). 4. There was no significant difference in incidence of zipping between the hand K-Flexofile and rotary NiTi (Profile and Lightspeed) instruments. Most of apical canals were slightly widened near the apical foramen. As a results of this study, rotary NiTi instruments are superior to the K-Flexofile in regard to the maintenance of original canal curvature, cross-sectional shape and preparation time. But more investigations and studies should be needed to evaluate the ideal canal instrumentation.

외식관련 SNS 이용 속성이 소비자의 외식동기, 외식만족도 및 삶의 질에 미치는 영향

오현정,윤지영,정희선,Oh, Hyun-Jung,Yoon, Jiyoung,Jeong, Hee Sun 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.6

The object of this study was to employ effective marketing methods using SNS by determining how food-related SNS usage characteristics have influence on dine-out motivation and restaurant satisfaction and how this affects people's quality of lie. Survey respondents were men and women who have had used some kinds of food-related SNS. The survey included general characteristics of respondents, food-related SNS usage characteristics, dine-out motivation, restaurant satisfaction, and food-related quality of life. Food-related SNS usage characteristics were divided into convenience, effective time-spending, and informative; Dine-out motivation was sorted into entertainment motivation and social motivation by factor analysis. Analysis of the connections between the variables by AMOS showed that among food-related SNS usage characteristics, convenience did not have a significant influence on either entertainment or social motivation. Informative had a positive effect on entertainment motivation (p<0.05), but not on social motivation. On the other hand, effective time-spending through food-related SNS had an impact on both entertainment (p<0.001) and social (p<0.05) motivation. Moreover, the effect of dine-out motivation on restaurant satisfaction showed that entertainment motivation (p<0.05) and social motivation (p<0.01) both have significant influences on restaurant satisfaction. Also, restaurant satisfaction turned out to affect quality of life (p<0.05). As a result of this study, the usage of food-related SNS did not directly influence customers' restaurant satisfaction and quality of life; (p<0.05). As a result of this study, the usage of food-related SNS did not directly influence customers' restaurant satisfaction and quality of life; however, it had an impact on dine-out motivation and gain pleasure of dining out and help improve the quality of life in the long run; thus, it is believed that marketing strategies thorough SNS by restaurant industry are required.

초크랄스키 공정에서 결정 - 용융액 계면의 형태에 관한 수치해석적 연구

오현정,정자훈,강인석 ( Hyun Jung Oh,Ja Hun Jeong,In Seok Kang ) 한국화학공학회 1995 화학공학의이론과응용 Vol.1 No.1

연체수식어로서 사용되는 부사의 어순

오현정(Hyun Jung Oh) 한국일본어문학회 2002 日本語文學 Vol.14 No.-

N/A N/A

가정식생활 수첩 ‘가족밥상’을 활용한 식생활교육 모니터링 연구

오현정(Hyun-Jung Oh),김정원(Jeong-Weon Kim) 한국실과교육학회 2016 한국실과교육학회지 Vol.28 No.2

가정식생활 수첩 ‘가족밥상’은 농림축산식품부가 전국 초등학교에 배포해 온, 알림장 형식의 바른 식생활교육 자료이다. 본 연구의 목적은 ‘가족밥상’을 활용한 식생활교육의 모니터링을 통해 그 효과를 평가하고 개선방안을 마련하기 위한 것이다. 이를 위해 2014년 4월∼5월에 걸쳐 서울 및 경기도 지역 초등학교 22개교 28학급의 학생(668명), 학부모(572명), 교사(28명)를 대상으로 모니터 링을 실시하였다. 학생 및 학부모 대상으로는 수첩 활용 교육 전 설문조사와 4∼5주간의 학급별 재량 교육이 끝난 뒤 학생 및 학부모 대상으로 사후 설문조사를 실시하여 교육 전·후의 효과를 분석하 였다. 교사의 경우, 수첩 활용 교육 후 수첩의 활용도, 교육적 효과, 그리고 개선점 및 보완점을 설문하였다. 수첩 활용 교육 결과, 초등학생 및 학부모의 바른 식생활 지식 및 행태 영역에서 통계적으로 유의 미한 긍정적인 변화가 있었으며(p<.05), 행태영역보다는 지식영역의 교육적 효과가 높게 나타났다. 또한 학생의 경우, 지식영역에서 저학년보다 중학년, 중학년보다 고학년의 정답률이 높았다. 행태영 역은 교육적 변화가 없는 학년군도 나타나, 행태의 변화는 좀 더 지속적인 교육이 필요함을 확인할수 있었다. 교사들은 수첩 제작 및 활용에 대한 다양한 개선점 및 보완점을 제시하였다. 먼저 수첩 교육내용의 수준 상 배포대상을 저학년이 아닌, 중학년이나 고학년으로 변경하거나, 또는 저학년을 배포대상으로 유지할 경우, 내용의 적정화와 구성의 단순화 및 난이도 조절이 필요하다는 것이다. 또한 학생 및 학부모의 행태영역 교육효과가 지식영역에 비해 크지 않았는데, 이는 수첩 활용 교육 기간이 약 한 달 정도로 단기적이었기 때문인 것으로 판단된다. 따라서 한 학기 또는 한 학년도와 같이 장기적으로 가정식생활 수첩 ‘가족밥상’이 활용될 수 있도록 개발된다면 식생활 행태영역의 교육적 효과를 높일 수 있을 것이다. 향후 가정식생활 수첩‘가족밥상’의 개선점을 보완하고, 수첩 활용 교육에서 학부모의 참여를 높여 보다 적극적인 가정과의 연계교육이 일어난다면, 수첩을 활용한 식생활교육의 효과를 더욱 높일 수있을 것이다. Ministry for Agriculture, Food and Rural Affairs has developed and distributed a home dietary life booklet ‘Family dining table’, as an educational material to promote good food education. The objective of this research was to monitor the dietary education using the home dietary life booklet ‘Family dining table’ by assessing the educational effects on elementary school children and their parents and providing improvement plans. In this research, elementary students, parents, and teachers of 28 classes from 22 different elementary schools in Seoul and Gyunggi-Do were surveyed in April and May of 2014. Parents and students were asked to answer a series of questionnaires before and after a 4~5 week discretionary education period, and the effects of the education were analyzed. Also, a survey on the utilization and effects of the booklet was conducted on teachers after the discretionary education period, and areas for improvements were deduced. Overall, the education using the booklet was statistically effective in the category of knowledge as well as behavior and attitude of both elementary students and their parents(p<.05). For students, those in higher grades had higher percentage of correct answers than those in lower grades in the category of knowledge. However, the fact that no significant changes were observed in some student groups in behavior and attitude suggested the necessity of longer and continuous education to change them. Teachers suggested various useful ways to improve and utilize the education using the booklet. First, the level of the booklet was difficult for lower grade-students, therefore, the target for the distribution of the booklet should be middle or upper grade-students. Otherwise, simplification and rationalization of the content of the booklet are necessary to adjust the level to lower graders. In addition, the education showed more effective results in the category of knowledge towards students and parents than in the category of dietary behavior and attitude, most probably due to a short period of education around one month. Therefore, in order to achieve a more effective educational result in the category of dietary behavior and attitude, the period of education for using the booklet must be extended. The effect of dietary education using the home dietary life booklet ‘Family dining table’ could be improved greatly by changing the composition and contents of the booklet and making more parents be involved in their children’s dietary education.

사람과 상호작용하는 소셜 로봇을 위한 인공지능 기반 스피드 퀴즈 콘텐츠의 설계와 구현

오현정(Hyun-Jung Oh),강아름(A-Reum Kang),김도연(Do-Yun Kim),정구민(Gu-Min Jeong) 한국정보전자통신기술학회 2020 한국정보전자통신기술학회논문지 Vol.13 No.6

본 논문에서는 사람과 상호작용이 가능한 소셜 로봇에서 구동할 수 있는 스피드 퀴즈 콘텐츠의 설계 및 구현 방법을 제안하고, 구현을 위해 필요한 지능 모듈을 개발하는 방법을 제시한다. 또한, 지능 모듈 블록들을 배치하고 연결하여 맵을 구성하는 과정을 통해 스피드 퀴즈 콘텐츠를 구현하는 방법을 제안한다. 최근 소프트웨어 교육이 의무화되고 프로그래밍에 대한 관심이 높아지고 있다. 하지만 프로그래밍은 프로그래밍 언어에 대한 기초 지식이 없는 학생들이 바로 접근하는 데에는 어려움이 따라, 초심자에게 적합한 블록형 프로그래밍 플랫폼에 대한 관심이 커지고 있다. 본 논문에서 사용한 블록형 프로그래밍 플랫폼은 사람과 로봇과의 상호작용을 지원하여 즉각적이고 직관적인 프로그래밍이 가능한 플랫폼이다. 본 논문에서는 스피드 퀴즈 콘텐츠를 위해 구현한 지능 모듈을 블록형 프로그래밍 플랫폼 내에서 블록화하여 사용하였다. 본 논문에서 제안하는 스피드 퀴즈 콘텐츠의 시나리오를 구현하기 위해 총 3가지의 이미지 기반 인공지능 모듈을 구현한다. 지능 모듈 외에도 다양한 기능 블록을 배치함으로써 스피드 퀴즈 콘텐츠를 구현하였다. 본 논문에서는 스피드 퀴즈 콘텐츠 시나리오를 설계한 방법과 이를 위한 지능 모듈을 구현한 방식을 제안한다. In this paper, we propose a design and implementation method of speed quiz content that can be driven by a social robot capable of interacting with humans, and a method of developing an intelligent module necessary for implementation. In addition, we propose a method of implementing speed quiz content through the process of constructing a map by arranging and connecting intelligent module blocks. Recently, software education has become mandatory and interest in programming is increasing. However, programming is difficult for students without basic knowledge of programming languages to directly access, and interest in block-type programming platforms suitable for beginners is growing. The block-type programming platform used in this paper is a platform that supports immediate and intuitive programming by supporting interactions between humans and robots. In this paper, the intelligent module implemented for the speed quiz content was used by blocking it within a block-type programming platform. In order to implement the scenario of the speed quiz content proposed in this paper, we implement a total of three image-based artificial intelligence modules. In addition to the intelligent module, various functional blocks were placed to implement the speed quiz content. In this paper, we propose a method of designing a speed quiz content scenario and a method of implementing an intelligent module for speed quiz content.

고등학교 일본어 교과서의 말하기 활동 분석 -2009개정교육과정 `고등학교 일본어Ⅰ`을 중심으로-

오현정 ( Oh Hyun-jung ) 한국일어교육학회 2017 일본어교육연구 Vol.0 No.39

본고에서는 고등학교 일본어 교과서Ⅰ에 제시되어 있는 말하기 활동을 분석하여 말하기 활동의 전개 양상과 그에 따른 문제점을 논하였다. 교과서에 제시된 말하기 활동의 유형과 기능 통합의 특징을 제시하면 다음과 같다. ①교과서의 말하기 유형은 언어 습득 중심 활동으로 이루어져 있다. ②언어 습득 중심 활동 중 `유의미한 연습`이 가장 많으며, 다음은 `기계적인 연습`, `의사소통적인 연습` 순이다. ③언어 사용 중심 활동은 일부 놀이/과업 활동에 도입되어 있을뿐으로 제시 비율이 매우 낮다. ④언어 기능 통합 양상은 교과서의 구성 체계와 달리 말하기 단독 활동이 가장 많다. ⑤2기능 통합은 듣고 말하기가 가장 많고, 다음으로 쓰고 말하기, 읽고 말하기 순이다. ⑥3기능이상 통합 제시 비율이 매우 낮다. 이상의 분석 결과를 바탕으로 고등학교 일본어 교과서의 말하기 활동의 문제점을 제시하면, 정확성이 강조된 언어 습득 중심 활동의 편중이 심하며, 유창성을 기르기 위한 활동의 도입이 제한적이어서 교육과정에서 제시하고 있는 유창성이 강조된 학습은 한계가 따를 것으로 보인다. 또한 말하기 단독 활동의 제시 비율이 높다는 사실은 말하기 활동 유형이 단조롭게 구성되어 있다는 것으로, 2기능 통합뿐만 아니라 3-4기능 통합 말하기 활동의 적극적인 도입이 요구된다. 말하기는 언어에 대한 지식(knowledge)과 그 지식을 이용하는 기술(skill)의 차이가 큰 기능으로, 말하기 활동의 유형을 다양화하고 언어 기능을 유기적으로 통합하여 보다 자연스럽게 의사소통 능력이 향상될 수 있도록 교과서를 구성해야 할 것이다. This article analyzes speaking activities proposed in High School Japanese Textbook I and discusses the development and problems of the speaking activities. Regarding types and integrating language skills of speaking activities proposed in the textbook, ① types of speaking activities proposed in the Japanese textbook are focused on language acquisition; ② among language acquisition activities, `meaningful practice` was most commonly used, followed by `mechanical practice` and `communicative practice`; ③ activities focusing on language use were introduced only in some part of play/task activities and, therefore, are highly limited; ④ as for integration of integrating language skills, individual speaking activities are most often presented, which does not correspond to the organization of the textbook; ⑤ integration of two different functions is most commonly found in listening and speaking, followed by writing and speaking, and reading and speaking; and, ⑥ also, integration of three or more functions is also very limited. Based on the results of the analysis, this study proposed problems in speaking activities that are proposed in the high school Japanese textbook. The textbook is excessively focused on activities for language acquisition with emphasis on accuracy with limited activities intended to improve fluency, and, therefore, it poses limitations on fluency-oriented learning as proposed in the curriculum. Also, the fact that individual speaking activities account for a high percentage implies that the variety of speaking activities is limited. Therefore, it is necessary to actively introduce integration of two or more functions in speaking activities. Speaking is a function in which the knowledge of the language differs widely from the skill of using it. Therefore, it is important to develop a textbook that diversifies speaking activities and organically integrate language functions, to help learners improve communication skills more naturally.

논문 : 한국어 교재와 드라마에 나타난 거절표현 특징 연구 -추론단계 중심으로-

오현정 ( Hyun Jung Oh ) 국제한국어교육학회 2010 한국어 교육 Vol.21 No.3

The goal of this thesis is to compare reject expressions between the Korean textbook and drama classifying the various situations and social determinants and then, find the problems of the reject in the textbook to show the desirable method of using them in practical way. The chapter 2 will propose the analytic methods for this study. The chapter 3 will show the features of the Korean textbook, and the chapter 4 will show the features of the Korean soft opera. During the analysis, I found several problems, which conversation examples was not diversified and only typical expressions were mainly used. And it was not reflected various social determinants and it just showed only equivalent relation in the private situation, and biased to simple supposition. The chapter 5 will show the desirable education model of rejection. This thesis is meaningful regarding we should make the textbook which contains various expression on the basis of real live conversations, and we can apply to Korean rejection expression study through basic knowledge and supposition process of the students.

통합적 기업이미지 관리에서의 칼라마케팅의 역할

오현정(Oh Hyun-jung),이혜선(Lee Hyesun) 한국색채학회 2005 한국색채학회 논문집 Vol.19 No.1

한국인 일본어 학습자의 자타동사의 오용에 관한 고찰 : 유대 자타동사를 중심으로

오현정 ( Hyun Jung Oh ) 韓國日語日文學會 2009 日語日文學硏究 Vol.70 No.1