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.

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.

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.

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

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.

4차 산업혁명시대 중국의 과학기술혁신 정책 변화와 한국의 대응방안

한동균(Han, Dong-Gyoon) 한국아시아학회 2019 아시아연구 Vol.22 No.2

현대사회로 진입할수록 새로운 기술과 혁신이 나타나는 주기가 매우 빨라짐에 따라 급변하는 사회에서 혁신은 매우 중요하다. 이 글은 4차 산업혁명시대를 맞이하여 중국이 제조대국에서 제조강국으로, 글로벌 신흥국에서 글로벌 강대국으로 도약하는 국가 비전의 중심에 4차 산업과 관련한 과학기술육성 전략을 강력히 추진하고 있음을 인지함에서 출발한다. 즉, 중국의 4차 산업의 핵심인 ICT 산업 육성을 위한 관련 제도 및 투자, 환경 등 전 방위에 걸쳐 체계적이고 지속적인 지원정책의 배경과 현황, 특징 등을 검토하여 향후 한중간 협력 및 우리의 대응방안을 도출하는데 목적이 있다. 또한, 1992년 한중수교 이후 한중 경제관계가 질적으로 한층 심화되는 현 상황에서 양국 간 과학기술협력 체계는 구축되었으나 그 범위와 심도는 선진국에 미치지 못하는 수준임을 감안하여 중국의 과학기술혁신 정책들을 최대한 면밀히 파악해 대중국 4차 산업 부문의 효율적인 전략을 위한 정책수립에 있어 의미 있는 자료를 제공하고자 한다. Innovation is very important in a rapidly changing society as the frequency with which new technologies and innovations appear is getting faster as society progresses. This paper recognizes that China is pushing for the development of science and technology related to the 4th industry at the center of the national vision that China is going to become a manufacturing powerhouse from a global emerging country to a global power. The purpose of this study is to examine the background, status and characteristics of systematic and sustainable support policies across the entire defense system, including related systems for the development of ICT industry, which is the core of the 4th industry. In addition, since the establishment of the science and technology cooperation system between the two countries, which has become more and more intense since the establishment of diplomatic relations between Korea and China in 1992, the scope and depth of the bilateral cooperation has been insufficient for such advanced countries. This paper also provides meaningful data for policy formulation.

In space - a knot

Han, Dong Gyoon(한동균) 한국기초조형학회 2024 한국기초조형학회 작품집 Vol.2024 No.7

초등교사의 지속가능발전교육에 대한 인식 유형 : Q방법론적 접근

한동균(Han, Dong Kyun) 한국사회과교육연구학회 2020 사회과교육 Vol.59 No.4

본 연구는 지속가능발전교육(ESD)에 대한 초등교사의 다양한 인식 유형을 탐색하고자 하였다. 이를 위해 본 연구에서는 인간의 주관성을 객관적으로 탐색할 수 있는 Q방법론을 활용하였다. 그 결과 초등교사들은 대체로 ESD에 대해 긍정적으로 인식하고 있으며, ESD의 필요성에 대해서도 동의하고 있다. 특히 ESD는 기존의 환경교육과는 다르며, 단순히 교육과정만이 아닌 학교 전체적 접근과 지역사회와의 협력을 통해 이루어져야 한다고 생각한다. 하지만 초등교사들은 여전히 ESD 관련 전문적인 지식이 부족하다고 생각하고 있으며, ESD의 영역별 중요도에 대한 생각도 다르다. 구체적으로 유형별로 살펴보면, 유형 A는 ‘현장 실천형’으로 ESD에 대한 이해가 높고 ESD 실천 사례에도 관심이 많으며, 기존의 교과와 연계할 수 있는 다양한 ESD 교수법을 모색하는 유형이다. 유형 B는 ‘SD기반 탈영역형’으로 지속가능발전 개념을 바탕으로 ESD를 이해하고 있으며, ESD의 특정 영역을 중요시하는 것에 반대하고 있다. 그리고 효과적인 ESD를 위한 교육기관의 지원이 좀 더 필요하다고 생각하고 있다. 반면에 유형 C는 ‘환경기반 통합형’으로 ESD를 환경 영역을 중심으로 한 통합적 접근이라 생각하고 있으며, 구체적인 ESD 방법보다는 전체적인 관점에서 ESD의 접근법에 관심이 많다. 이에 따라 본 연구에 의하면 그동안 초등교사의 ESD에 대한 인식 개선에도 불구하고, 더욱 효과적인 ESD를 위해서는 진화하는 ESD의 개념에 대한 안내, ESD의 교수법과 실천 사례의 자료 개발 및 보급, 그리고 지역사회와의 협력을 위한 지원이 필요함을 알 수 있다. This study was carried out to explore diverse types of perception of Education for Sustainable Development (ESD) among elementary-school teachers. To this purpose, we used Q methodology to objectively explore human subjectivity. We found that most, elementary-school teachers perceived ESD positively and agreed about the need for ESD as well. Especially, they thought that ESD differed from the existing environmental education, and that ESD should be conducted through whole school approach and collaborate with a local community, not simply through a curriculum. However, elementary-school teachers still thought they lacked professional knowledge about ESD, and they were differed in their thoughts about the importance of each domain of ESD. According to specific analysis by type, Type A ‘Classroom Practical’ has a high understanding of ESD, is very interested in practical cases of ESD, and seeks a variety of ESD teaching methods that can be connected to existing subjects. Type B ‘SD-Based Non-Domain’ understands ESD as being, based on the concept of sustainable development, and opposes attaching importance to a specific domain of ESD. They also think that support from an educational institute is more required for effective ESD. In contrast, Type C ‘Environment-Based integrative’ thinks that ESD is an integrated approach focusing on an environmental domain and is more interested in ESD’s approaches than in concrete ESD methods. In conclusion, we demonstrate that elementary school teachers need to understand the concept of evolving ESD, to develop data containing ESD teaching methods and practical cases, and to support collaboration with the community.

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.

다문화 시대 상호문화이해를 위한 사회과 수업방안 탐색: 공감기반 학습모형을 중심으로

한동균(Han, Dong Kyun) 한국사회과수업학회 2021 사회과수업연구 Vol.9 No.1

본 연구는 다문화 시대 상호문화이해를 위한 사회과 수업방안을 탐색하고자 하였다. 먼저 선행 연구를 바탕으로 다문화 시대 상호문화주의적 접근과 상호문화이해를 위한 시민적 자질로 공감 시민의 필요성을 제안하였다. 문화적 차이로 인한 사회적 갈등을 해소하기 위해서는 상호문화주의에 근거한 만남과 대화가 필요하며, 다른 사람과의 원활한 소통과 관계 형성을 위해서는 타인의 입장이 되어보는 공감능력이 필수적이다. 이러한 논의를 바탕으로 상호문화이해를 위한 사회과 수업방안을 탐색하고자 하였다. 이를 위해 먼저 현행 초등 사회과교육과정에서 상호문화이해와 관련된 내용을 분석하였다. 현행 교육과정에서 추구하는 문화 간 차이의 인정과 존중을 넘어, 공감을 통한 상호문화 간의 만남과 대화를 보다 강조하고자 하였다. 이에 따라 선행연구에서 검증된 공감기반 학습모형을 활용하여 상호문화이해를 위한 사회과수업을 구안하였다. 분석한 교육과정을 근거로 상호문화이해를 통한 편견과 차별의 해소를 수업주제로 선정하였다. 그리고 선행연구의 공감기반 수업모형의 절차에 따라 첫 번째 공감적 이해 단계로 편견과 차별로 인한 문제 인식, 두 번째 공감적 탐구 및 표현 단계로 편견과 차별의 원인 탐구하기, 세 번째 공감의 내면화 단계로 사회적 소수자 입장에 서서 나의 삶과 관련짓기, 네 번째 공감적 실천 단계로 시민적 참여와 실천을 위한 마음 다지기로 사회과수업을 구안하였다. 이러한 수업의 실천 과정에서는 무엇보다 학생들에게 타인의 관점을 실제 경험할 수 있도록 하는 교수학습 방법이 가장 유용할 것이다. This study aimed to seek social studies instruction plans for intercultural understanding in the multicultural era. Based on prior research, this study suggests the need for empathetic citizens as civic qualities for intercultural approach and intercultural understanding in the multicultural era. In order to resolve social conflicts cause by cultural differences, interculturalism-based meeting and conversation are required, and for smooth communication and relationship with others, empathy to put oneself in others’ shoes is essential. Based on these discussions, social studies instruction plans for intercultural understanding were studied. Prior to this, the contents related to intercultural understanding in the social studies curriculum were analyzed. The instruction plans of this study are to stress intercultural meeting and conversation beyond recognition and respect for cultural differences that the current curriculum seeks. Accordingly, a social studies instruction for intercultural understanding was devised using an empathy-based learning model verified by the previous studies. On the basis of the curriculum analyzed, the resolution of prejudice and discrimination through intercultural understanding was selected as an instructional topic. This social studies instruction consists of four stages; first, recognizing problems caused by prejudice and discrimination as the stage of empathic understanding, second, exploring reasons for prejudice and discrimination as the stage of empathic exploration and expression, third, relating the position of the social minority with my life at the stage of empathy internalization, and fourth, bracing myself for civic participation and practice as the stage of empathic practice. It is thought that teaching and learning methods for students to experience perspectives of others actually will be most useful in the practice process of this instruction.