치과 임프란트에 대한 일반인의 인식도에 관한 설문조사 연구

김현우,박상수,김우택,조남성,박양호,박준우,이건주,Kim, Hyun-Woo,Park, Sang-Soo,Kim, Woo-Taek,Cho, Nam-Sung,Park, Yang-Ho,Park, Jun-Woo,Rhee, Gun-Joo 대한구강악안면외과학회 2001 대한구강악안면외과학회지 Vol.27 No.4

The techniques of the dental treatment are well known to common people, but the dental implant as one of the treatment options to rehabilitate patient's mouth is little known to them. Taking these situation into consideration, we, writers made actual analyses of statistics by putting into the form of diagrams based on questionnaires. Three hundreds of common people over 20 years old were picked up and we used convenience sampling method which is one of nonprobability sampling methods. Statistics are about these questions. 1. How much common people know about dental implant as a treatment option. 2. How much common people know about the detailed portions of the dental implant for rehabilitaton. 3. How common people got to know the dental implant. We present actual answers of the common people.

FBG 광섬유센서가 내장된 7연 강연선을 이용한 포스트텐션 UHPC 교량의 긴장력 장기모니터링

김현우,김재민,최송이,박성용,이환우,Kim, Hyun-Woo,Kim, Jae-Min,Choi, Song-Yi,Park, Sung-Yong,Lee, Hwan-Woo 한국전산구조공학회 2015 한국전산구조공학회논문집 Vol.28 No.6

이 연구에서는 FBG센서가 내장된 강연선을 포스트텐션 UHPC 교량(길이 11.0m, 폭 5.0m, 높이 0.6m)에 적용하고 약 1년간의 긴장력 장기모니터링 결과를 정리하였다. 그리고 초기 도입 긴장력과 차량재하시험을 통하여 콘크리트 내부 강연선의 긴장력 변화를 계측하고 계측결과에 대한 분석을 수행하였다. 연구결과, 이 연구에서 제안하는 콘크리트 내부 긴장력 측정방법이 공영 중인 교량에서 외력으로 인한 콘크리트 내부의 작은 프리스트레스 변화를 효과적으로 측정할 수 있음을 알 수 있었다. 아울러 장기 계측결과를 이용하여 응력변화에 의한 유효변형률을 정확하게 얻기 위해서는 온도보정에 사용되는 열팽창계수의 선택이 매우 중요함을 알 수 있었다. This paper presents results of one-year monitoring on prestressing force of a 7-wire steel post-tensioning strand which is installed in a UHPC(ultra high performance concrete) bridge with 11.0 m long, 5.0 m wide, and 0.6 m high by using a FBG-encapsulated 7-wire steel strand. The initial prestressing forces and the prestress changes during a vehicle load test were measured using the FBG-encapsulated strand. The results show that the FBG-encapsulated 7-wire strand is very effective for monitoring the prestress forces even the change in the tension force is very small. Additionally, it was indicated that selection of the thermal expansion coefficient which is used for the temperature correction shall be carefully carried out.

유기질비료의 표층 및 전층시비에 따른 벼 수량 변화

김현우,최현석,김병호,김홍재,최경주,정덕영,이연,박광래,정석규,Kim, Hyun-Woo,Choi, Hyun-Sug,Kim, Byeong-Ho,Kim, Hong-Jae,Choi, Kyeong-Ju,Chung, Doug-Young,Lee, Youn,Park, Kwang-Lai,Jung, Seok-Kyu 한국유기농업학회 2012 韓國有機農業學會誌 Vol.20 No.1

벼 유기재배를 하는데 있어서 전층과 표층 시비방법에 따른 토양의 화학성, 물리성, 미생물상, 그리고 벼의 생육과 수량에 대해서 어떠한 영향을 미치는 지를 구명하기 위해서 수행하였다. 2008년부터 2010년까지 3년간에 걸쳐서 전라남도농업기술원 시험포장(논, 양토)에서 조사하였고 시험품종은 '동진1호'를 이용하였다. 토양유기물은 표층시비에서 높았고 토양양이온은 전층시비에서 높았다. 유기질비료의 질소 무기화율은 표층시비에서 높았고 잔존하는 시기별 토양 유기물함량도 표층시비에서 높은 경향을 나타내었다. 토양물리성은 전층시비에 의해서 향상되는 경향을 보였고, 토양 미생물상은 전체적으로 표층시비에서 높았다. 표층시비구가 전층시비보다 5%의 수량이 증수되는 특성을 보였다. This study was investigated to evaluate the effects of fertilizer application of surface and broadcast for rice culture on the soil chemical, physical, and microbial properties as well as growth and yield of rice. The application was made with 'Dongjin 1' rice at Jeollanam-do Agricultural Research & Extension Services from 2008 to 2010. Soil organic matter and cation concentrations were increased by surface and broadcast applications, respectively. Plots treated by surface application tended to be higher seasonal N-mineralization rate in the organic fertilizer and seasonal soil organic matter than those of broadcast application. Soil physical properties seemed to be improved by the broadcast application, and soil microbial properties were increased by the surface application. Surface application increased 5% of rice yield compared to that of broadcast.

방사선사진에서의 골질과 임상적으로 평가한 골질 분류의 상관관계

김현우,허경회,박관수,김정화,이원진,허민석,이삼선,최순철,Kim Hyun-Woo,Huh Kyung-Hoe,Park Kwan-Soo,Kim Jeong-Hwa,Yi Won-Jin,Heo Min-Suk,Lee Sam-Sun,Choi Soon-Chul 대한영상치의학회 2006 Imaging Science in Dentistry Vol.36 No.1

Purpose : To investigate the validity of digital image processing on panoramic radiographs in estimating bone quality before endosseous dental implant installation by correlating bone quality in radiographic images with clinical bone quality classification. Materials and Methods : An experienced surgeon assessed and classified bone quality for implant sites with tactile sensation at the time of implant placement. Including fractal dimension eighteen morphologic features of trabecular pattern were examined In each anatomical sites on panoramic radiographs. Finally bone quality of 67 implant sites were evaluated in 42 patients. Results : Pearson correlation analysis showed that three morphologic parameters had weak linear negative correlation with clinical bone quality classification showing correlation coefficients of -0.276, -0.280, and - 0.289, respectively (p<0.05). And other three morphologic parameters had obvious linear negative correlation with clinical bone quality classification showing correlation coefficients of -0.346, -0.488, and -0.343 respectively (p<0.05). Fractal dimension also had a linear correlation with clinical bone quality classification with correlation coefficients -0.506 significantly (p<0.05). Conclusion : This study suggests that fractal and morphometric analysis using digital panoramic radiographs can be used to evaluate bone quality for implant recipient sites.

폐경기 증후군의 사회심리적 측면

김현우,Kim, Hyun-Woo 한국정신신체의학회 1996 정신신체의학 Vol.4 No.1

Regarding menopause as a turning point in woman's lift, the author reviewed the psychosocial aspects of menopause. Seeing menstruation as the symbolic meaning of female sexuality, psychoanalysts argue that menopause, the loss of symbolic meaning of female sexuality, may bring a mourning reaction to woman. It is reported that the high ratio of depression does not have a serious relationship with the menopause syndrome, and that depression cannot be viewed as a different symptoms. It is also proved that most women successfully recover themselves from temporary menopause symptom. Research data shows that some women have a negative thought on the meaning of menopause. Others, however, have a positive concept on the meaning of menopause because of the feeling of release and freedom. In sum, the author suggests that psychosocial consideration is very important as much as bilogical consideration in considering the meaning of menopausal syndrome.

소규모 기독교 대학의 서비스러닝 질적사례 연구: 서비스러닝 효과와 학습정서를 중심으로

김현우,이정미,Kim, Hyun Woo,Lee, Jeong Mee 한국기독교교육학회 2022 기독교교육논총 Vol.- No.71

This study tried to explore the ways to operate service learning more effectively by analyzing the educational effects of service learning and changes in learning sentiments that appeared in the service learning operation process established for the realization of the Christian educational philosophy at a small local Christian university. The analysis was conducted using NVivo11, focusing on the reflection journals of students who participated in service learning in the first semester of 2022 at J University. As a result of the study, through service learning, personal competence growth, self-reflection and will to change, self-esteem and self-efficacy, social and civic aspects, social responsibility enhancement, community (community) empathy and awareness of participation, and helping others There were educational effects such as an increase in the breadth of understanding. In addition, learning emotions that appeared in the service learning process included positive emotions such as gratitude, challenge recognition, pride, confidence, and responsibility, and negative emotions such as worry (difficulty), upset, regret, and awkwardness. It is a measure to increase the educational effect based on the learning emotion shown in the service learning process. When operating service learning, the service period at the visiting institution is increased to 6 weeks or more, and based on close interaction and detailed analysis of the educational environment in the planning stage, Suggest to develop and operate a plan. In addition, if you have the opportunity to receive feedback from your professors and colleagues through demonstrations and mock presentations in the classroom before visiting the institution, and finally have the opportunity to visit the institution again after the results of service learning are announced, more quality service learning education will be operated. Based on the results of this study, it is expected that more valuable and meaningful service learning education opportunities will be provided to learners by designing and operating a practical and sophisticated service learning curriculum.

광학활성 동축 이중 원통을 수직하게 비추는 단색 빛의 산란 : I. 해석적 이론

김현우,김진승,Kim, Hyun-Woo,Kim, Jin-Seung 한국광학회 2009 한국광학회지 Vol.20 No.6

광학활성 동축 이중 원통의 산란 문제에 대한 해석적인 해를 구하였다. 얻은 해의 타당성을 점검하고자 해를 이미 알고 있는 특수한 경우와 비교하였다. 이 해는 둥근 막대모양의 생물 세포를 광학적으로 분석하는데 쓸 수 있는데, 세포핵에는 나선형으로 꼬인 염색체가 들어 있으므로 광학활성이 있을 수 있다. An analytic solution is obtained for the problem of monochromatic light scattering by optically active, concentric double cylinders. The validity of the obtained solution is indirectly checked by comparing it with solutions already reported for some special cases. The solution can be used in the optical analysis of rod-shaped biological cells which possibly have optically active nuclei containing helically wound chromosomes.

주택 전세가격과 거시경제변수간의 관계 연구

김현우,진경호,이교선,Kim, Hyun-Woo,Chin, Kyung-Ho,Lee, Kyo-Sun 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.2

본 연구에서는 부동산 시장뿐만 아니라 우리 생활에 많은 비중을 차지하는 주택 가격에 영향을 미치는 거시경제변수에 대해 살펴보았다. 주택 전세가격에 영향을 미칠 것으로 파악되는 거시경제변수로는 가계대출금리, 가계예금총액, 취업자 수로 분석모형을 설정하였으며, 각 변수에 대한 시계열 자료를 활용하여 다중회귀분석을 실시하였다. 분석한 결과에 따르면, 주택 전세가격은 네 가지 거시경제변수 모두에 영향을 받으며 각각의 변수가 높아질수록 전세가격 또한 상승하는 것으로 나타났다. 본 연구결과를 통해 주택 전세가격 안정화를 위한 해결책을 모색하고, 효율적이고 지속 가능한 주택시장 정책을 수립할 수 있을 것이다. In this study, we investigated the macroeconomic variables that affect housing prices thus creating a large impact on people's lives as well as the real estate market. For the study, the macroeconomic variables able to influence the House Rental Price (housing price by lease or deposit) were used for an analysis as follows: housing sales price index, household loans rate, total household savings, the number of employees and a multiple regression analysis was performed using a time series for each macroeconomic variable. As a result of the analysis, the House Rental Price was affected by all of four macroeconomic variables. The House Rental Price increased as each variable enlarged. In conclusion, this study may be useful for finding a solution for stabilizing the House Rental Price as well as for the establishment of efficient and sustainable policies for the housing market.

The Pediatric Flatfoot : Its Differential Diagnosis and Management

김현우,박진,강응식,박희완,Kim, Hyun-Woo,Park, Jin,Kang, Eung-Shick,Park, Hui-Wan The Korean Foot and Ankle Society 2001 대한족부족관절학회지 Vol.5 No.1

편평족은 내측 세로궁이 소실되어 족저부가 편평하게 되는 변형의 총칭으로, 소아에서 흔하 고 보호자들의 관심이 많은 질환이다. 이학적 검사상 후족부의 외반과 전족부의 외전소견을 보이며, 감별질환을 위해 정확한 이학적 검사와 방사선학적 검사를 필요로 한다. 원인으로는 유연성 편평족, 종골 외반, 선천성 수직 거골, 부주상골, 족근골 결합등이 있으며 정상적 유 아의 경우 시간경과에 따라 저절로 호전되는 유연성 편평족이 대부분이다. 따라서 병적 편평족이 아닌 경우 편평족의 원인과 양호한 자연경과를 보호자에게 설명하는 것이 중요하다. 본 논문에서는 소아 편평족의 감별질환을 위한 각 질환에 있어서의 이학적 소견과 검사소견 그리고 이들의 치료에 대해 살펴 보고자 한다.

얼굴의 특이점 검출 및 실시간 추적을 이용한 e-Book 제어

김현우,박주용,이정직,윤영로,Kim, Hyun-Woo,Park, Joo-Yong,Lee, Jeong-Jick,Yoon, Young-Ro 대한의용생체공학회 2014 의공학회지 Vol.35 No.2

This study is about e-Book program based on human-computer interaction(HCI) system for physically handicapped person. By acquiring background knowledge of HCI, we know that if we use vision-based interface we can replace current computer input devices by extracting any characteristic point and tracing it. We decided betweeneyes as a characteristic point by analyzing facial input image using webcam. But because of three-dimensional structure of glasses, the person who is wearing glasses wasn't suitable for tracing between-eyes. So we changed characteristic point to the bridge of the nose after detecting between-eyes. By using this technique, we could trace rotation of head in real-time regardless of glasses. To test this program's usefulness, we conducted an experiment to analyze the test result on actual application. Consequently, we got 96.5% rate of success for controlling e-Book under proper condition by analyzing the test result of 20 subjects.