갑상선 자가항체와 인지기능 저하의 연관성

한동균,전진숙,최영식,김호찬,오병훈,Han, Dong Kyun,Cheon, Jin Sook,Choi, Young Sik,Kim, Ho Chan,Oh, Byoung Hoon 한국정신신체의학회 2016 정신신체의학 Vol.24 No.2

연구목적 본 연구의 목적은 자가면역 갑상선장애 환자에서 인지결함의 발생 빈도를 알아보고, 이에 영향 미치는 변인을 규명하며, 특히 갑상선 자가항체와의 연관성을 알아보기 위함이다. 방 법 여성 자가면역 갑상선장애 환자 65명을 대상으로 구조적 면담을 통해서 인구학적 정보를 얻었으며, 한국판 Mini-Mental State Examination(Korean Version of the Mini-Mental State Examination, MMSE-K)와 한국판 Montreal Cognitive Assessment(Korean Version of the Montreal Cognitive Assessment, MoCA-K)를 사용해서 인지기능을 평가하였고, 한국판 Depression Rating Scale(Korean Version of the Hamilton Depression Rating Scale, K-HDRS)를 사용해서 우울증을 평가하였다. 결 과 1) MMSE-K 총점 24점 이하는 7.69%, MoCA-K 총점 22점 이하는 10.77%였다. 인지기능 저하의 빈도는 antimicrosomal 항체 양성군(N=38, 58.46%)과 음성군(N=27) 간에 유의한 차이가 없었다. 2) Antimicrosomal 항체 양성군과 음성군의 변인별 차이를 비교한 결과, 음성군보다 양성군에서 antithyroglobulin 항체 수치, antimicrosomal 항체 수치, TSH 농도는 유의하게 높았고, free T4는 유의하게 낮았다(각각 p<0.05). 3) 자가면역 갑상선장애 환자의 인지기능과 여러 변인의 연관성을 분석한 결과, MMSE-K 검사와 MoCA-K 검사의 총점은 연령, 결혼상태, antithyroglobulin 항체 수치, K-HDRS 총점과 각각 유의한 상관관계가 있었다(각각 p<0.05). 4) 회귀분석 결과, 연령, 교육수준, 갑상선 자가항체, 갑상선기능, 우울증은 자가면역 갑상선장애 환자의 인지기능에 영향을 미치지 않았다. 결 론 본 연구의 결과는 자가면역 갑상선장애 환자의 인지기능과 갑상선 자가항체의 연관성을 지지할 수 없었다. Objectives : The aims of this study were to know the frequency of cognitive dysfunction among patients with autoimmune thyroid disorders, and to reveal influencing factors on it, especially to clarify association with autoimmune thyroid antibodies. Methods : From sixty-five female patients with autoimmune thyroid disorders, demographic data were obtained by structured interview. Their cognitive funtions were measured using the MMSE-K and the MoCA-K tests. Depression was evaluated by the K-HDRS. Results : 1) Among patients with autoimmune thyroid disorders, 7.69% of them were below 24 on the MMSE-K, while 10.77% were below 22 on the MoCA-K. The frequency of cognitive deficit was not significantly different according to having positivity to antimicrosomal antibodies or not. 2) The antimicrosomal antibody-positive patients had significantly higher antithyroglobulin antibody titers, antimicrosomal antibody titers, and TSH concentration, while had significantly lower free T4 levels(p<0.05, respectively). 3) The total scores of the MMSE-K and the MoCA-K had significant correlation with age, marital status, antithyroglobulin antibody titers and K-HDRS(p<0.05, respectively). 4) The regression analysis revealed that variables such as age, education, autoimmune thyroid antibodies, thyroid function and depression did not influence on cognitive function of patients with autoimmune thyroid disorders. Conclusions : Our results could not support that cognitive function of patients with autoimmune thyroid disorders had correlation with autoimmune thyroid antibodies.

CT장치의 성능평가에 관한 연구

한동균,김문찬,양한준,고신관,Han Dong Kyoon,Kim Moon Chan,Yang Han Joon,Ko Shin Kwan 대한방사선사협회 2001 대한방사선사협회지 Vol.27 No.2

In medical equipments as complex as a computed tomographic equipment, routine quality control procedures are essential to the detection of small pathologic change in soft tissue as well as and the maintenance of optimal image quality. This study was condu

X-선 장치의 기술적 인자의 변화에 따른 선량 비교 평가

한동균,고신관,선종률,윤석환,정재은,Han, Dong-Kyoon,Ko, Shin-Gwan,Seon, Jong-Ryul,Yoon, Seok-Hwan,Jung, Jae-Eun 대한디지털의료영상학회 2009 대한디지털의료영상학회논문지 Vol.11 No.2

With the recent development of diagnosis using radiation and increasing demand of the medical treatment, we need to minimize radiation exposure dose. So, This is the method which reduce patient dose by measuring surface dose of radiographic change factor and by comparing theoretical and actual dose, when we take an X-ray which is generally used. By changing the factor of kV, mAs, FSD, whose range is 60 to 120 kV, 20 to 100 mAs, 80 to 180 cm, we compared theoretical surface dose with actual surface dose calculated by the simple calculation program, Bit system, and NDD-M method As a result, when kV and mAs were higher, theoretical surface dose and actual surface dose were more increased. but the higher FSD was, the more decreased surface dose was. According to this, the error were measured about 0.1 to 0.2 mGy in low dose part and about 0.7 to 1.5 mGy in high dose part. Therefore, this shows that theoretical surface dose calculation method is more correct in low dose part than in high dose part. In conclusion, we will have to make constant efforts which can reduce patient and radiographer's exposure dose, studying methods which can predict patient's radiation exposure dose more exactly.

재구성 알고리즘 변화에 따른 CT 영상의 화질 평가

한동균,박건진,고신관,Han, Dong-Kyoon,Park, Kun-Jin,Ko, Shin-Kwan 대한디지털의료영상학회 2010 대한디지털의료영상학회논문지 Vol.12 No.2

In this study, the correlation among the changes of Modulation Transfer Function(MTF) in the noise and high-contrast resolution and the change of Contrast to noise ratio(CNR) in the low-contrast resolution will be examined to investigate the estimation of image quality according to the type of algorithms. The image data obtained by scanning American Association of Physicists in Medicine(AAPM) phantom was applied to each algorithm and the exposure condition of 120 kVp, 250 mAs, and then the CT number and noise were measured. The MTF curved line of the high-contrast resolution was calculated with Point Spread Function(PSF) by using the analysis program by Philips, resulting in 0.5 MTF, 0.1 MTF and 0.02 MTF respectively. The low-contrast resolution was calculated with CNR and the uniformity was measured to each algorithm. Since the measurement value for the uniformity of the equipment was below ${\pm}$ 5 HU, which is the criterion figure, it was found to belong to the normal range. As the algorithm got closer from soft to edge, the standard deviation of CT number increased, which indicates that the noise increased as well. As for MTF, 0.5 MTF, 0.1 MTF and 0.02 MTF were all sharp algorithms, and as the algorithm got closer from soft to edge, it was possible to distinguish more clearly with the naked eye. On the other hand, CNR gradually decreased, because the difference between the contrast hole CT number and the acrylic CT number was the same while the noise of hole increased.

휠체어에서 호흡수와 심박수 측정 및 이벤트 전송

한동균,김종명,홍주현,차은종,이태수,Han, Dong-Kyoon,Kim, Jong-Myoung,Hong, Joo-Hyun,Cha, Eun-Jong,Lee, Tae-Soo 대한의용생체공학회 2008 의공학회지 Vol.29 No.6

The purpose of this study is to measure both ECG and BCG(Ballistocariograph) signal of a subject on moving or resting wheelchair and detect the heart rate and respiratory rate and transmit an event message to remote server on emergent situation. To acquire ECG and BCG data, amplifier circuits were composed to be suitable for their characteristics. The output signals were converted to digital data and stored in bio-signal archiving media(SD card). CDMA module was used to transmit the event data on ECG electrode detachment and the received data was monitored by the developed C# application program. 5 volunteers participated in the experiment to evaluate the validity of the developed device. When the event occurs in each subject, 48 Kbyte data, stored for 32 seconds from that point, was transmitted to remote server through CDMA cellular phone network correctly. The received data of ECG, BCG, and 3-axial acceleration could be archived in server and the heart rate and respiratory rate could be measured and analyzed. The developed device in this study could acquire the ECG and BCG data of subjects on wheelchair simultaneously and measure their heart rate and respiratory rate. In addition, event data was verified to be transmitted to remote server without any errors.

스토리텔링을 활용한 교과융합형 독도수업 모델 개발과 실천

한동균(Han, Dong-kyun),남경희(Nam, Kyong-heui) 동북아역사재단 2017 영토해양연구 Vol.14 No.-

본 연구는 스토리텔링을 활용한 교과융합형 독도수업 모델의 개발과 실천을 통해 독도수업의 가능성을 공감의 지리교육 측면에서 탐색하고자 하였다. 이를 위해 구안한 프로그램의 적용 과정을 통하여 시사점과 문제점을 추출하고, 수업 전후에 학생들의 변화 양상을 살펴보았다. 프로그램의 적용결과 학생들의 독도에 대한 기본 지식이 증가하고, 독도에 대한 장소감이긍정적으로 변화하였다. 또한 스토리텔링 방식으로 진행한 수업에 대한 만족도가 높아지고 독도에 대한 공감적 이해가 깊어졌다. 본 연구를 바탕으로 도출된 시사점은 다음과 같다. 첫째, 학생들이 수업의 주체가 될 때 수업의 효과가 훨씬 커진다. 학생들은 수업에서 다루는 주제가 나의 이야기로 다루어질 때 좀 더 흥미와 관심을 가지고 접근하며 적극적으로 참여한다. 둘째, 학생의 정서적 요소를 고려하여 공감을 불러일으키는 수업이 되어 체득과 공감을 통한 내주가 이루어질 때 독도에 대한 암묵적 지식을 습득할 수 있다. 셋째, 스토리텔링 기법을 활용할 때 학생들의 흥미와 관심을 더 많이 불러일으킬 수 있다. 넷째, 독도에 대한 지속적인 공감교육이 이루어질 때 독도가 왜 우리 땅인지에 대한 의사소통을 가능하게 할 수 있다. 결론적으로 본 연구는 스토리텔링을 활용한 교과융합형 독도수업 모델의 개발과 실천을 통해 학생들의 인지적·정서적 변화를 살펴보고 공감의 지리교육의 가능성을 엿볼 수 있었다는 점에서 의의를 둘 수 있다 하겠다. This study aims to explore the potential of models for teaching about Dokdo through storytelling to make geography lessons more sympathetically engaging and to identify teaching strategies that make more effective use of storytelling. Implications and issues emerged over the course of carrying out the programs designed for this study and observing the changes in students before and after class. Most students learned an increased amount of basic details about Dokdo and its location, and their feelings for the island shifted toward a positive direction. Moreover, they responded that the storytellingbased lessons were instructive, satisfactory, and helpful for developing a shared understanding of Dokdo. The implications from this study can be summarized as follows. First, lessons become much more effective when students take the initiative. When their own stories become the topic of a lesson, students more actively participate in class, develop a keener interest in the Dokdo issue, and tend to approach it as a daily matter. Second, more sympathetically engaging lessons on Dokdo that take emotional elements into account can help students internalize the Dokdo issue and gain implicit knowledge about it. Third, storytelling techniques are effective in arousing interest in and attracting attention toward lessons on Dokdo. Fourth, continued sympathetically engaging education about Dokdo can facilitate students in sharing their opinions about why the island is Korean territory.

다문화공간에서의 교사, 학생, 학부모의 지역정체성 분석

한동균(Han Dong Kyun) 한국사회과교육연구학회 2013 사회과교육 Vol.52 No.2

본 논문은 사회과교육의 지역화를 위해 주요 학교 구성원인 교사, 학생, 학부모의 지역정체성을 이해하고자 하였다. 특히 여러 학자들이 주창하는 공간적 전환의 맥락에서 다문화사회에 따른 다문화공간을 그 대상으로 하였다. 이를 위해 지역정체성을 분석하기 위한 구성요소를 구안하고 교사, 학생, 학부모에게 재현되는 지역정체성의 의미를 해석하고자 하였다. 두 사례 지역을 대상으로 분석한 결과, 사회과교육의 지역화에 다음과 같은 시사점을 유추할 수 있었다. 첫째, 성인들과 학생들이 이해하는 지역정체성의 차이는 크지 않았으며, 둘째, 성인들과 학생들이 우리 지역으로 인식하는 공간적 범위의 차이는 매우 컸다. 셋째, 저학년과 고학년 학생의 지역에 대한 이해 정도는 비슷했으며, 학생들의 자기 지역에 대한 관심이 많다는 점을 알 수 있었다. 넷째, 지역화를 주도하는 교사들의 해당 지역에 대한 이해가 매우 부족했으며, 이에 따라 지금의 지역화교과서의 내용과 저술 방식에 대한 개선이 필요하다는 점을 알 수 있었다. The purpose of this study was to look into the regional identity of teacher, student and parents for the localization social studies. In particular, it targeted on multicultural spaces through the current spatial approach on multicultural societies. In order to do so, components needed for the analyses of regional identities were collected, and the significance of regional identities were reanalyzed for the school community members. In terms of the specific case regions, K elementary school located in Seongdong-gu, Seoul and H elementary school in Huamdong, Yongsan-gu were set as the targets, and as for the analytical results, the following implications were inferred about the localization of social studies. Firstly, there was no big difference between the comprehension of regional identities by adults and students. Secondly, the spatial range recognized as ‘my region’ by adults and students were very different. Thirdly, the degree of comprehension about regions was similar for students in lower and higher grades, and it was recognizable that students were highly interested about the regions they were each responsible for. Fourthly, teachers leading regionalization displayed major insufficiency in their understanding about relevant regions. Therefore, it was identified that improvements were needed in current contents and writing methods of textbooks on regionalization.

탈식민주의 장소학습에 따른 학생의 장소 스키마 변화 탐색

한동균(Han Dong Kyun) 글로벌교육연구학회 2016 글로벌교육연구 Vol.8 No.2

본 연구는 ‘학습’의 관점에서 사회과 야외학습으로서 탈식민주의 장소학습에 따라 학생의 장소 스키마가 어떻게 변화하는지 탐색하였다. 구체적으로 학생의 장소경험을 설명하기 위해 야외학습 전후로 설문조사, 워크시트 작성, 심층 면담 등을 실시하여 학생의 장소 스키마의 변화를 분석하였다. 양적 분석을 통해 집단별 장소 스키마의 변화 정도를 수치화하였으며, 질적 분석을 통해 개별 장소 스키마의 변화 양상을 살펴보았다. 분석 결과 다음과 같은 사회과 지리교육에의 시사점을 유추할 수 있었다. 첫째, 장소학습 방법으로서 야외학습은 학생의 학습에 효과적이다. 둘째, 야외학습의 효과는 장소에 관한 사전 지식이 많을 경우 극대화된다. 셋째, 학생은 야외학습을 통해 장소에 대한 개인지리를 공적지리로 전환한다. 넷째, 학생의 장소학습 경험을 분석하는데 장소 스키마가 유용하게 활용될 수 있다. 다섯째, 장소 스키마는 교육적으로 차이의 이해 방식으로 활용될 수 있다. This study aims to explore how place schema of students varied depending on the Postcolonial place-based learning as the fieldwork of social studies, from the perspective of 'learning'. In order to explain place experience of students specifically, a survey and an in-depth interview were conducted and students were asked to fill out worksheets. Then, place scheme changes of students were analyzed. The place scheme change in each group was quantified using quantitative analysis and the individual place schema change aspects were analyzed using qualitative analysis. The implications for geography education of social studies extracted from these analysis results are as follows. First, fieldwork is effective in learning as a place learning method. Second, the effect of fieldwork is maximized when there are a lot of prior knowledge about places. Third, students change personal geography of place into public geography through the fieldwork. Fourth, place schema is useful in analyzing place learning experience of students. Fifth, place schema can be used as a way of understanding differences educationally.

Bending Motion Control of Electroactive Polymer Actuator-Sensor Hybrid Structure for Finger Exoskeleton

한동균(Dong Gyun Han),송대석(Dae Seok Song),조재영(Jae Young Jho),김동민(Dong Min Kim) Korean Society for Precision Engineering 2015 한국정밀공학회지 Vol.32 No.10

This study was conducted in order to develop a finger exoskeleton system using ionic polymer metal composites (IPMCs) as the actuator and sensor in a hybrid structure. To use the IPMC as an actuator producing large force, a first order transfer function was obtained using results from a block force for DC excitation that applied to two IPMCs of 20mm-width, 50mm-length, and 2.4mm thickness together. After which the validation of 200gf control with anti-windup PI controller was confirmed. A 5mm-width, 50mm-length, 0.6mm-thickness of IPMC was also modeled as a sensor for tip displacement. As a result, the IPMC sensor could been utilized as a trigger role for the actuator. Finally, an IPMC sensor and actuator were installed on the joint of a single DOF exoskeleton in the hybrid structure, and test for the control of 40gf of block force and predefined sequence of motion was performed.

사회적 공감 능력 신장을 위한 사회과교육 방안 모색

한동균(Han, Dong Kyun) 한국사회과교육연구학회 2020 사회과교육 Vol.59 No.2

본 연구의 목적은 사회적 공감 능력의 신장을 위한 사회과교육의 방안을 모색하는 것이다. 이를 위해 먼저 문헌 연구를 통해 사회적 공감의 의미와 구성 요소, 사회적 공감교육의 필요성에 대해 논하였다. 사회적 공감은 개인적 공감을 바탕으로 맥락적 이해와 거시적 관점을 수용하여 사회 문제에 대한 심층적인 분석과 이해를 가능하게 한다. 하지만 그동안 사회과교육은 이성 중심의 지식과 사고 학습에 치우쳐 배움이 실천으로 이어지지 않는다는 비판을 받아왔다. 따라서 이를 극복하기 위해서는 사회과교육에서의 정서적 확장이 필요하다. 그리고 이를 위해 감성 교육으로서 사회적 공감교육을 사회과교육의 새로운 대안으로 제시하였다. 구체적으로 사회적 공감 능력 신장을 위한 방안을 탐색하고 이를 바탕으로 사회과교육에서의 사회적 공감기반 수업모델을 구안하였다. 그리고‘난민’을 주제로 사회적 공감기반 수업모델에 적용한 사회과 수업사례를 제시하였다. 이러한 사회적 공감기반 수업은 사회 문제에 대한 심층적 이해와 이성과 감성을 아우르는 해결방안 모색과 합리적인 의사 결정, 그리고 사회적 책임감을 바탕으로 한 시민적 참여로 이어질 수 있도록 할 것이다. 본 연구가 사회과에서 사회적 공감교육을 처음 적용하고자 시도하였으며, 이를 위해 사회적 공감기반 수업모델과 구체적인 사회과 수업사례를 제시했다는 점에서 의의가 있다. 향후 후속 연구를 통해 본 연구에서 제시한 사회적 공감 수업의 사례를 적용하고 보완하고자 한다. The purpose of this study was to explore methods of social studies education for the enhancement of social empathy. To this end, first, the meaning and components of social empathy and the need for social empathy education through the study of literature was discussed. Social empathy, based on personal empathy, embraces contextual understanding and macro-perspective-taking, an enabling in-depth analysis and understanding of social problems. However, social studies education has been criticized for its bias toward rational-centered knowledge and thinking learning, which does not lead to practice. Thus, the affective expansion in social studies education is necessary to overcome this. To this end, social empathy education as emotional education was presented as a new alternative to social studies education. Specifically, this study explored approaches to enhancing social empathy and devised a social empathy-based lesson model in social studies education based on them. It also presents examples of social studies lessons applied to the social empathy-based lesson models under the theme ‘immigrant’. These social empathy-based lessons will enable us to lead to in-depth understanding of social problems, in seeking solutions encompassing reason and emotion, rational decisionmaking, and civic participation based on social responsibility. This study is meaningful in that it is the first to apply social empathy education in the social studies, and for this purpose, it presents social empathy lesson models and specific cases of social studies lessons. It is necessary to apply and supplement the examples of social empathy lessons presented in this study through further research.