국어과 예비 교사들의 시범 보이기에서 나타나는 문제 양상

최영인 ( Young In Choi ),박재현 ( Jae Hyun Park ) 국어교육학회 2011 국어교육학연구 Vol.41 No.-

This study was executed with the goal to improve teaching ability of pre-teachers who will soon teach students in education scenes, and matters related to recognition and application skills of demonstration, one of class design ability of pre-teachers were stated. Demonstration is strongly recognized as a step composing direct instruction or explicit instruction, but it can be used as effective independent teaching method or step in teaching procedures and methods for strategies or functions. Demonstration in Korean subject is mostly composed of actions explaining language using processes or guiding them with details, and the levels of demonstration should be diversified and made into steps. The analysis result of pre-teachers showed 3 following problems of use of demonstration. First, even in lessons with goals of explaining or emphasizing propositional knowledge, demonstration is frequently used. Second, in many cases, instead of focusing on certain functions or strategic study ``processes`` in demonstration, ``result of actions`` is suggested or aspects related to ``result of actions`` are explained. Third, the level of demonstration is limitedly based on language uses of the teacher or other adults. Such problems were identified to be caused because pre-teachers are wrongfully recognizing the essence of demonstration or are mechanically using teaching-learning models (direct instruction or explicit instruction) including demonstration without examining the essence of demonstration. For actual changes of teaching and learning in Korean language education scenes, detailed education contents and methods of demonstration should be prepared for pre-teachers based on basic studies about problems of demonstration.

고등학생 화자들의 설득적 말하기에 나타난 청중 고려 양상 연구 -남자 고등학생 자료를 중심으로

최영인 ( Young In Choi ) 국어교육학회 2013 국어교육학연구 Vol.47 No.-

The purpose of this study is to describe, in a situation where necessity and justification of audience consideration in Korean education have been agreed, what the aspects that high school students as speakers, who recognize audience, carry out audience consideration are. In preparing and performing persuasive speaking of authentic male high school students for formal situations, they recognized the importance of considering audience and could describe a variety of characteristics of audience who they will face. However, they did not know how to configure persuasive discourse suitable to the characteristics of the audience as well as did not explicitly state the location or method where the characteristics of the audience have been significantly reflected in the persuasive discourse they configured. Audience consideration is a concept encompassing the process that a speaker ‘construct audience’ and ‘proceeds to configure an appropriate discourse according to such construction’. With the result that the study observed and analyzed the configuration and interaction of the persuasive discourse of high school students, some implications necessary for enabling speakers to effectively consider audience in persuasive discourse education could be derived. First, students need to be able to experience the presence of ‘audience’ more concretely and authentically. Second, they should connect ‘the characteristics of audience speakers construct’ and ‘configuration and strategy of discourse according to audience construction’ more meaningfully. In addition, considering authentic aspects of audience that speakers face in discourse situations, an education that the characteristics of audience can be considered in combination is necessary.

국어과 예비교사를 위한 데이터 기반 맞춤형 수업 설계 프로그램 개발 연구

최영인 ( Choi Young-in ),홍선주 ( Hong Sun-joo ),박재현 ( Park Jae-hyun ) 부산대학교 과학교육연구소 2019 교사교육연구 Vol.58 No.2

Differentiated instruction may be considered an ideal model for education. Numerous predictive studies on the future of school education have anticipated the advent of differentiated instruction based on highly advanced data technologies. The information needed for differentiated instruction include diagnostics on individual proficiency and needs. Considering the pace of development in data-related technologies, there will soon come a time when teachers can analyze and utilize large sets of data on learners for the purpose of instructional design. This study reports the development and results of applying educational programs for trainee teachers on the enhancement of the ‘capacity for data-based differentiated instructional design.’ The purpose of this program was to raise awareness among trainee teachers regarding personalized instructional design that will be demanded in future education; and to assess the validity of the methods used for enhancing the capacity for differentiated instructional design. Through reviews of previous literature and theories, this study identified two separate component sub-levels of ‘data-based differentiated instructional design’ - ‘learner analysis’ and ‘planning educational activities based on the analysis results.’ Furthermore, an educational program was devised for practicing the skills required in each of these two stages. This program development took place between July and October, 2018, with 18 trainee teachers enrolled at the department of education of a university in Seoul.

학습자 중심 교육의 의미에 대한 현직 국어 교사들의 인식

최영인 ( Young In Choi ) 국어교육학회 2012 국어교육학연구 Vol.43 No.-

This study was executed to survey on perceptions of the In-Service Korean teachers about ``Learner-Centered Education``(LCE). LCE has been diversely understood and interpreted among the teachers in the educational field. LCE is derived from Constructivisim and was influenced from ``Learner-centered learning principles``. The author extracted common tenets of LCE concept from two theoretical flow(Constructivisim. and Learner-centered learning principles) and developed the questionnaire. In the LCE, emphasized are the students as a active agent, the decision and control of learner about what to learn and how to learn, the relationship between learners and instructor, learning as experience, collaboration so on. This survey found out some defining characteristics of korean teachers` perception about LCE. There were distinctive groups, One showed the tendency to minimize LCE and the other showed the tendency to maximize LCE. Some korean teachers regarded LCE as ``just a good education``. And some teacher`s perception was near similar with the theoretical and ideal origins. According to a this survey, only 9~11% percent of the respondents favored ``element of choice or control`` as learner`s right and responsibility. That means most of korean teachers don`t agree that increased responsibility and accountability, increased sense of autonomy are the essential in the LCE. This result showed a big gap of LCE concepts between theory and practice. This study aimed at investigating how different they are. And this results showed that, as for LCE, the in-service korean teachers do not have understanding firmly built upon a certain theory but rather drawn from their own teaching experience, hence, nor integrated practices properly. From this results, we have to discuss about common traits of LCE and also decide realizable or acceptable traits of LCE in the real educational field.

비점성 유동 계산에 직접모사 몬테카를로 방법의 적용

최영인(Young-In Choi),공현철(Hyeon C. Gong),서견수(Kyoun-Su Seo),조미옥(Miok Joh),이준호(JoonHo Lee),오범석(Bum-Seok Oh) 한국항공우주학회 2004 한국항공우주학회지 Vol.32 No.2

현재 직접모사 몬테카를로 방법은 희박기체역학에서 널리 활용되고 있다. 고도가 100킬로미터 이상의 지역에서 공기의 밀도는 매우 낮다. 따라서 일반적인 연속체방정식으로 희박지역의 유동을 계산하고 나타내는 것은 거의 불가능에 가깝다. 그래서, 희박기체유동의 시뮬레이션을 위해 분자역학에 기반을 둔 직접모사 몬테카를로 방법이 개발되었다. 직접 모사 몬테카를로 방법의 가장 큰 장점 중의 하나는 비교적 쉬운 알고리즘으로 다양한 물리적 과정을 시뮬레이션 할 수 있다는 것이다. 반면, 단점은 FDM과 비교했을 때, 비교적 계산시간이 오래 걸린다는 것이다. 하지만, 오늘날 이러한 단점은 병렬처리를 이용하여 많이 개선되고 있다. 본 연구에서는 직접모사 몬테카를로 방법의 최대 단점인 계산시간을 줄이기 위하여 비점성 유동을 계산하는 일반적인 직접모사 몬테카를로 방법의 알고리즘을 수정하여 제시하였다. 수정된 알고리즘으로 비점성 유동 계산에 직접 적용하여 얻은 결과를 FDM으로 얻은 결과와 뉴톤 방법으로 구한 결과를 비교하여 결과적 차이가 거의 없음을 증명하여 수정된 직접모사 몬테카를로 방법의 알고리즘의 타당성을 입증하였다. In these days the use of Direct Simulation Monte Carlo(DSMC) method in rarefied gas dynamics is a widely accepted approach . At the altitude of l00 ㎞ or higher, the air density becomes very low. So it is impossible to describe rarefied regimes by continuum equations. Thus, a DSMC method based on the molecule dynamics is developed for the simulation of rarefied gas flow. The advantage of DSMC methods is the possibility to simulate various physical processes. On the other hand, the disadvantage is that DSMC methods require large amount of computing time compared with finite-difference methods. This disadvantage can be to some extent compensated in parallel computations. In this research, a modified DSMC method for inviscid flows for saving computation time showed that there is no difference between the result of FDM and that of the modified DSMC method, and proved the validity of the modified DSMC algorithm.

사이드스텝 속도에 따른 하지관절의 운동학적 분석

최영인 ( Young In Choi ),노정석 ( Jung Suk Roh ) 대한스포츠의학회 2016 대한스포츠의학회지 Vol.34 No.1

The purpose of this study were to examine the effects of the speed of sidestep in a specific direction on the kinematic variables of the lower extremities and to provide basic information on sidestep. The subjects of this study were eight students at Hanseo University who did not have a problem in lower extremity alignment. Biomechanical data were collected using a motion analysis system and force plate and Kruskal-Wallis test was performed in order to test differences according to speed. The results of this study were as follow. First, as to hip joint angle according to speed, when the speed increased, in the sagittal view, the maximum flexion angle decreased, the range of motion (ROM) decreased, and the flexion angle at the highest ground reaction force decreased, and in the transverse view, the internal rotation angle at the highest ground reaction force increased. Second, as to knee joint angle according to speed, when the speed increased, in the sagittal view, the maximum flexion angle decreased, the ROM decreased, and the flexion angle at the highest ground reaction force decreased, and in the coronal view, the maximum varus angle decreased, and the ROM decreased. Third, as to ankle joint angle according to speed, when the speed increased, in the sagittal view, the ROM decreased, and the dorsiflexion angle at the highest ground reaction force decreased, and in the coronal view, the minimum inversion angle increased. This suggests that high-speed sidestep during a game increases the risk of injury and degenerative arthritis among athletes.

설득 화법 집중 교육을 통한 학습자의 인식과 태도 변화 연구

최영인 ( Young In Choi ) 한국화법학회 2014 화법연구 Vol.0 No.24

국어과 교육과정의 기본적인 전제는 학습자들의 설득 담화 표현과 이해 교육을 통해 설득 담화를 생산할 수 있는 능력, 설득 담화를 소통하는 데 필요한 바람직한 태도를 형성할 수 있다는 것이다. 그런데 과연 ‘교육과정이 의도한 결과’만이 학습자에게 남는 것인가에 대해 재고할 필요가 있다. 학습자들이 여러 학년에 걸쳐 반복적으로 설득 의사소통에 대한 교육을 받는 현재의 국어교육 체제에서 설득 담화의 누적적 교육이 학습자들에게 어떤 영향을 주며, 어떻게 의미화되는가에 대해 좀더 면밀히 살피고자 한다. 본고에서는 연구 목적에 부합하는 연구 방법으로 사례 연구 방법을 선택하였다. 연구자는 고1 학생을 대상으로 소규모 수업을 진행하면서, 학습자들의 설득 담화 구성 과정 및 결과를 관찰하고, 그 과정에서 학습자들의 담화 자료 및 인터뷰 자료를 다각도로 수집하였다. 연구자는 서울 소재 남자 고등학교에서 2012년 여름, 15일 동안 하루 50분씩 이루어지는 방과후 수업을 운영하였고, 전체 수업의 주제는 ‘설득과 담화’였다. 3주 동안 지속적이고 누적적으로 이루어진 설득 화법 수업이 학습자들에게 남긴 변화를 화자 측면의 변화와 청자(청중) 측면의 변화로 나누어 살폈다. 전자의 경우 ‘화자의 자기 발견과 이해의 경험’과 ‘설득에 대한 인식의 변화’를, 후자의 경우 ‘태도 변화에 대한 청주로서의 저항인식’, ‘상호 토의 참여자로서의 적극적 듣기의 가치 경험’ 등이었다. 설득 화법 집중 교육을 통해 나타난 학습자들의 변화를 ‘학습자의 자기 이해 및 자기 발견의 가능성’과 ‘설득 담화를 매개로 한 토의의 긍정적 기능 경험’으로 종합해 볼 수 있다. 이를 바탕으로 설득 담화를 교육할 때 고려할 수 있는 점은 다음과 같다. 첫째, 특정한 주제 영역을 선정하여 그 세부 영역에 대한 논제를 다루어보도록 하고, 여러 논제들에 대한 자신의 입장을 비교해 보며 그 기저에 있는 가치기반을 분석하도록 하는 것이다. 둘째, 화자의 설득 화법 수행이 단순한 연행에 그치지 않도록 하기 위해, 설득 담화 소통의 장에서 청중들이 적극적으로 참여할 수 있는 상호 토의를 적극 활용하는 방안이다. The basic premise of Korean language education(speech education) is, through persuasive discourse expression and understanding education, to develop an ability to be able to produce persuasive discourse and a desirable attitude necessary for communicating persuasive discourse. But does only the result an education course intended remain to learners? In present Korean language education system where learners are repetitively educated over several grades about persuasive communication, how cumulative education of persuasive discourse affects the learners and how it is signified will be examined more closely. In order to observe any change from learners who experienced the production and understanding of persuasive discourse appears as a result of the corresponding class, this paper chose a qualitative case study method. It is an appropriate study method when we want to plan an in-depth understanding of the context of a phenomenon. Having run a small scale class aimed at grade 10 students, the researcher observed the process of persuasive discourse configuration of learners and its result, and collected discourse data of the learners and their interview data from various angles during the process. The research ran an after-school class consisting of 50 minutes a day for 15 days, summer of 2012 at a boys’ high school located in Seoul, and the subject of overall classes was Persuasion and Discourse. The researcher examined changes the persuasive discourse class intensively and cumulatively run for 3 weeks remained to the learners, from an aspect of speaker side changes and the other aspect of listener (audience) side changes. In the former case, there were self-understanding as a main body of expression and changes of recognition to persuasion, in the latter case, self-resistance to others’ Persuasion, Recognition on value awareness of active audience participation, etc., respectively.

초등학교 1학년 학생의 독서마라톤 참여 경험에 대한 연구

최영인(Choi Young in) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.18

학교 현장에서는 다양한 종류의 독서 프로그램이 기획되어 운영되고 있다. 본 연구에서는 2017년 전북 전주 소재 공립초등학교에서 실시한 독서마라톤과 관련하여, 초등학교 1학년 학생들이 그 독서마라톤을 어떻게 경험하였는지, 그 영향이 어떠한 지를 탐색하였다. 연구 참여자는 독서마라톤 참여 태도가 우수한 초등학교 1학년 학습자 3명, 그들의 학부모 3명, 초등학교 교사 2명이다. 학습자 3명, 학부모 2명에게는 면대면 심층 면담을, 학부모 1명과 교사 2명에게는 서면 면담을 실시하여 그 내용을 분석하였다. 연구 결과는 다음과 같다. 첫째, 독서마라톤 중 학생들은 한자리에서 목표한 분량의 책을 쌓아 두고 읽는 방식으로 독서를 진행하였고, 많이 읽기 위해 쉬운책을 고르고 되도록 빨리 읽으려 노력하였다. 둘째, 독서마라톤 중 이루어진 독서 행위는 독후 활동으로 이어지지 않았고, 독서와 관련된 소통도 부재하였다. 셋째, 연구 참여자들이 독서마라톤 중 보였던 집중적 독서의 주된 동력은 ‘상을 받고자 하는 욕구’였고, 시상식이 이루어진 후 그 효과는 현격히 감소하였다. Schools have planned and are operating various kinds of reading programs. In this study, we investigated the first-grade students’ experience in the book marathon event carried out at a public elementary school in Jeonju, Jellabuk-do in 2017 and the effect of the book marathon. Eight persons participated in this study, including three first grade students, their three parents, and two elementary school teachers. An in-depth interview was conducted on three learners and two parents, and questionnaires were provided to one parent and two teachers. The results of the study are as follows. First, during the book marathon, the students piled up a target number of books in one place and read the books. To read as many books as possible, they chose easily understandable books and tried to read them as quickly as possible. Second, their reading behavior during the book marathon did not lead to after-reading activities, and there was no communication related to reading after the event. Third, the main motivation for their intensive reading that was observed during the book marathon was “desire to win an award,” and the effect of the book marathon was significantly decreased after the award ceremony.

항만 대기질 개선을 위한 정책 우선순위 분석에 관한 연구

강인규(In-Kyu Kang),이해찬(Hae-Chan Lee),최영서(Young-Seo Choi),여기태(Gi-Tae Yeo) 한국물류학회 2023 물류학회지 Vol.33 No.2

수도권 항만 지역은 타 항만 지역에 비해 연중 높은 대기오염 농도를 유지하고 있어 대기오염 관리가 시급한 상황이다. 수도권항만의 대기오염물질 배출량은 전국항만의 평균 2배 이상인 것으로 분석된다. 이러한 상황에도 불구하고 수도권 항만 지역에 대한 지속적이고 실현 가능한 항만 대기질 개선정책 방안에 관한 분석 연구는 미흡한 실정이다. 이러한 측면에서 본 연구에서는 수도권 항만의 대기질 개선을 위한 정책 우선순위를 도출하는 것을 연구의 목적으로 하였다. 연구의 방법은 전문가 의사를 통합하여분석할 수 있는 CFPR(Consistent Fuzzy Preference Relation)법을 활용하였다. 분석 결과, 종합가중치 순위에서는 1위가 선박 연료유 황 함유량 기준 강화, 2위가 친환경 선박의 확대, 3위가 선박배출 저감장치 지원확대 순으로 나타났다. 즉 세부요인 1위, 2위, 3위 모두가 선박에서 발생하는 대기오염물질 저감과 관련된 정책으로 분석되었다. 특히 상위권에 랭크된 정책 항목들은 대부분강력한 규제정책, 대규모 재원 투입, 정부 시설보조금 정책 등이 필요한 정책요인으로 분석되었다. 본 연구는 항만 대기질 개선정책입안자들에게 실무적으로 적용할 수 있는 유용한 정책방안을 제시한다는 측면에서 시사점을 갖는다. The port areas in the metropolitan area maintain higher concentrations of air pollution throughout the year compared to other port areas, so air pollution management is urgently needed. Air pollutant emissions from ports in the metropolitan area were analyzed to be more than twice the national average. Despite these circumstances, analyses and studies on the sustainable and feasible port air quality improvement policy measures for the port areas in the metropolitan area are insufficient. In this respect, the purpose of this study was to derive policy priorities for improving air quality in the metropolitan ports. As for the method of the study, the CFPR (Consistent Fuzzy Preference Relation) method, which can integrate and analyze the opinions of experts, was used. As a result of the analysis, in the overall weight ranking, the first, second, and third places were shown to be the strengthening of the ship fuel sulfur content standard, the expansion of eco-friendly ships, and the expansion of support for ship emission reduction devices, respectively. That is, all of the first, second, and third detailed factors were analyzed as policies related to vessel-oriented air pollutant reduction. In particular, most of the policy items ranked at the top were analyzed as policy factors that require strong regulatory policies, large-scale financial inputs, and government facility subsidy policies. This study has implications in that it presents useful policy measures that can be applied practically to policy makers to improve port air quality.

폐포상피세포, 대식세포를 비롯한 각종 세포주에서 H₂O₂에 의한 Peroxiredoxin 동위효소들의 산화에 따른 불활성화와 재생

오윤정,김영선,최영인,신승수,박주헌,최영화,박광주,박래웅,황성철,Oh, Yoon Jung,Kim, Young Sun,Choi, Young In,Shin, Seung Soo,Park, Joo Hun,Choi, Young Hwa,Park, Kwang Joo,Park, Rae Woong,Hwang, Sung Chul 대한결핵및호흡기학회 2005 Tuberculosis and Respiratory Diseases Vol.58 No.1

Background : Peroxiredoxins (Prxs) are a relatively newly recognized, novel family of peroxidases that reduce $H_2O_2$ and alkylhydroperoxide into water and alcohol, respectively. There are 6 known isoforms of Prxs present in human cells. Normally, Prxs exist in a head-to-tail homodimeric state in a reduced form. However, in the presence of excess $H_2O_2$, it can be oxidized on its catalytically active cysteine site into inactive oxidized forms. This study surveyed the types of the Prx isoforms present in the pulmonary epithelial, macrophage, endothelial, and other cell lines and observed their response to oxidative stress. Methods : This study examined the effect of exogenous, excess $H_2O_2$ on the Prxs of established cell lines originating from the pulmonary epithelium, macrophages, and other cell lines, which are known to be exposed to high oxygen partial pressures or are believed to be subject to frequent oxidative stress, using non-reducing SDS polyacrylamide electrophoresis (PAGE) and 2 dimensional electrophoresis. Result : The addition of excess $H_2O_2$ to the culture media of the various cell-lines caused the immediate inactivation of Prxs, as evidenced by their inability to form dimers by a disulfide cross linkage. This was detected as a subsequent shift to its monomeric forms on the non-reducing SDS PAGE. These findings were further confirmed by 2 dimensional electrophoresis and immunoblot analysis by a shift toward a more acidic isoelectric point (pI). However, the subsequent reappearance of the dimeric Prxs with a comparable, corresponding decrease in the monomeric bands was noted on the non-reducing SDS PAGE as early as 30 minutes after the $H_2O_2$ treatment suggesting regeneration after oxidation. The regenerated dimers can again be converted to the inactivated form by a repeated $H_2O_2$ treatment, indicating that the protein is still catalytically active. The recovery of Prxs to the original dimeric state was not inhibited by a pre-treatment with cycloheximide, nor by a pretreatment with inhibitors of protein synthesis, which suggests that the reappearance of dimers occurs via a regeneration process rather than via the de novo synthesis of the active protein. Conclusion : The cells, in general, appeared to be equipped with an established system for regenerating inactivated Prxs, and this system may function as a molecular "on-off switch" in various oxidative signal transduction processes. The same mechanisms might applicable other proteins associated with signal transduction where the active catalytic site cysteines exist.