구강내 장치를 이용한 수면 무호흡 환자의 치료 증례

강국진,오강섭,이시형,Kang, Kook-Jin,Oh, Kang-Seob,Lee, Si-Hyung 대한수면의학회 1998 수면·정신생리 Vol.5 No.2

OSA(Obstructive Sleep Apnea) is a condition with repeated obstruction of the upper airway while sleeping. This obstruction of the upper airway may result if sleep-induced physiologic change in muscle activity is superimposed on various structural defects of the upper airway. Macroglossia, micrognathia, retrognathia, and decreased airway lumen have all been implicated in OSA. There are a variety of surgical and nonsurgical treatment modalities currently available for OSA. Recently the uvulopalatopharyngoplasty has achieved widespread use, but success rates vary and long-term effects are still unknown. Current nonsurgical treatment methods can be cumbersome and uncomfortable with variable responses. For this case. we diagnosed as OSA by using polysomnographic analysis and cephalometric analysis, and delivered intraoral removable appliance which is more conservative, reversible and easy to use for patient. And we got results that Apnea Index(AI) decreased from 14.4 to 3.1, Total Respiratory Disturbance Index(Total RDI) decreased from 18.1 to 7.0 and removal of chronic headache in daytime.

교정용 골면 고정장치용 초내식성 스테인리스강 Miniplate의 특성

강국진(Kook-Jin Kang),손병화(Byeong-Hwa Sohn),김경남(Kyoung-Nam Kim),박용수(Yong-Soo Park),오근택(Keun-Taek Oh) 대한치과재료학회 2004 대한치과재료학회지 Vol.31 No.3

골내 고정 장치용 초내식성 스테인리스강 내식성 및 세포독성

오근택(Keun-Taek Oh),강국진(Kook-Jin Kang),손병화(Byeong-Hwa Sohn),박용수(Yong-Soo Park),김경남(Kyoung-Nam Kim) 대한치과재료학회 2004 대한치과재료학회지 Vol.31 No.2

연안환경에서 수영자 탐지를 위한 소나 신호처리 시스템 설계

장은정(Eun Jeong Jang),오원천(Won Tcheon Oh),이정우(Jung Woo Lee),강국진(Kook Jin Kang),김주호(Juho Kim) 대한전자공학회 2018 전자공학회논문지 Vol.55 No.11

항만의 선박이나 연안 주요시설에 대한 수중침투에 의한 위협 때문에 천해 수영자 탐지 소나 연구가 매우 중요해지고 있다. 연안은 수심이 매우 낮은 천해환경이므로 수중배경소음 수준이 높아 은밀하게 침투하는 수영자 탐지에는 고주파 능동소나가 적합하다. 수영자는 표적강도가 매우 낮고 크기도 작으므로 거리 분해능이 높은 광대역 고주파 소나 송신신호를 사용한다. 해저면 반사파로 인한 클러터가 매우 높은 천해 음탐환경에서는 높은 거리분해능으로 소형표적을 탐지하는 수영자 탐지소나의 클러터를 효과적으로 제거하는 성능이 매우 중요하다. 본 논문에서는 클러터가 높은 연안 환경에서 효과적으로 수영자를 탐지할 수 있는 클러터 감소기법이 적용된 능동소나 신호처리 시스템 설계 결과를 제시한다. 설계된 신호처리 시스템은 해상 실험데이터를 적용하여 성능을 분석하고 검증하였다. Recent concerns about underwater intruder threat on ships in port and harbour infrastructure raised strong interests in research and development on diver detecting sonar in shallow water. High frequency active sonar is utilized for detecting diver due to the high ambient noise level environment in shallow harbour area. The majority of diver detection sonars are high frequency wide bandwidth, active systems with high range resolution since diver is a very low target strength and small size target. The performance reducing the high clutter level caused by bottom reverberation in very shallow coastal area is very important for high resolution sonar detecting small target. This paper proposes a diver detecting sonar design result which can effectively minimize the clutter in shallow water reverberation environment. The proposed system is evaluated and analyzed with sea trial data

배리어프리(Barrier-Free) 영화 활성화 방안

최영환(Choi, Youngwhan),신주연(Shin, Juyeon),염은유(Yeom, Eunryu),오강국(Oh, Ganggook),오세은(Oh, Seeun),윤혜정(Youn, Hyejeong),정현지(Jeong, Hyunjee),최윤경(Choi, Younkyoung),한지나(Han, Jina),홍소망(Hong, Somang),조성희(Cho, Sunghu 한국상담복지경영학회 2019 상담복지경영연구 Vol.- No.3

본 연구는 장애인의 삶의 질과 밀접한 관련성을 가진 문화향유권을 증진하기 위한 방안을 살펴보기 위한 목적으로 수행되었다. 특히 다양한 문화활동 중 장애인들이 가장 많이 이용하고 있는 활동인 영화 관람에 초점을 맞추었다. 이를 위하여 국내외 배리어프리 영화의 실태와 제도를 살펴보았다. 또한 배리어프리 영화 상영 경험에 따른 배리어프리 영화에 대한 수용도와 장애인에 대한 인식 변화를 검증하였다. 추가적으로 관련 전문가들을 대상으로 인터뷰를 통해 배리어프리 영화의 실태와 활성화 방안을 모색하였다. 연구결과를 살펴보면, 국내의 배리어프리 영화는 2010년대 이후 발전해 오고 있으나, 여전히 장애인들의 문화 활동에 대한 욕구를 충족시키기에는 미흡한 수준이다. 특히 배리어프리 영화의 절대적인 양적 측면의 성장이 미흡한 상황이므로 이에 대한 대책이 필요하다. 국내 배리어프리 영화의 확대를 위한 방안 모색에 있어서 영국은 좋은 사례가 될 수 있으므로 이에 대한 추가적인 검토가 필요하다. 배리어프리 영화 경험에 따른 배리어프리 영화에 대한 수용도와 장애인에 대한 인식 변화를 살펴본 결과에서는 배리어프리 영화를 경험한 경우 배리어프리 영화에 대한 수용도가 증가하고, 장애인에 대한 인식 역시 개선되는 것으로 나타났다. 이러한 결과를 기반으로 하여 배리어프리 영화 경험 증대를 위한 기회 확대, 기업차원이 활성화 방안 추진, 제도의 개선을 제시하였다. The purpose of this study was to find measures to promote cultural rights that are closely related to the quality of life of people with disabilities. In particular, the focus was on movies, which are the most used films for people with disabilities in various cultural activities. We examined the actual conditions and systems of barrier-free films at home and abroad. Also, according to the barrier-free movie screening experience, we examined the change of acceptance of barrier-free movie and perception of disabled people. Additionally, interviews were conducted with relevant experts to find out the status of barrier-free films and how to activate them. Result shows that barrier-free films in Korea have evolved since the 2010s, but are still insufficient to meet the needs of disabled people for their cultural activities. In particular, since the absolute quantitative growth of barrier-free movies is not enough, measures need to be taken. The UK can be a good example of exploring ways to expand domestic barrier-free films, and additional consideration is needed. As a result of examining barrier-free film acceptance and recognition of disabled people according to barrier-free film experience, the barrier-free film experience showed that acceptance of barrier-free film increased and recognition of disabled people also improved. On the basis of results, this study suggested the expansion of opportunities to increase the barrier-free movie experience, the promotion of corporate-level activation, and the improvement of the system.

골내 고정 장치용 초내식성 오스테나이트 및 듀플렉스 스테인리스강 가공재의 특성

오근택,강국진,박용수,김경남 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.3

Nickel is one of the most common causes of allergic contact dermatitis and hypersensitivity. In case of stainless steel as biomaterials, the higher the corrosion resistance and the lower the nickel content, the better it is or the human body. However, because nickel plays an essential role in the stabilization of the austenitic phase and the corrosion resistance of stainless steel, it is difficult to remove the nickel from the constituents of stainless steels completely. Therefore, the purpose of this study was to investigate corrosion resistance, cytotoxicity, and mechanical property of super stainless steels, which had high corrosion resistance by synergistic effect of Mo(or W) and N, with respect to nickel content and to evaluate their potential for orthodontic applications. Super austenitic stainless steel(SR-50A) had high nickel content of 22% and super duplex stainless steels nickel contents of 6~10%. Super austenitic and duplex stainless steels had nitrogen contents of above 0.2%. Also, these steels had high Mo or W contents which were able to increase the localized corrosion resistance. In terms of hardness, super stainless steels, which had Vickers hardness values of 374~400 Hv in cold-rolled state and 186~285 Hv in annealed state, exhibited higher values than 316L S. S.. Duplex stainless steels exhibited higher mechanical properties than austenitic stainless steels. In terms of corrosion resistance, super stainless steels exhibited lower passive current density(2.3~3.8 ㎂/cm^2) than pure Ti(6.6㎂/cm^2) in the body-simulated solution and similar potentiodynamic polarization behaviors. Pitting corrosion occurred in 316L S. S. but not in the others. Thus these steels were considered to have high corrosion resistance in the human body. In terms of cytotoxicity, SR-5OA and SAF2507 exhibited none cytotoxicity and the others slight. This results indicated that the cytotoxicity of alloys containing nickel had no relation with nickel content because SR-5OA with the highest nickel content exhibited none cytetoxicity In conclusion, it is considered that super stainless steels with high corrosion resistance and good biocompatibility can be used for orthodontic applications because of the enhanced passive film by high addition of Mo, W, N, etc.