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최철민,김기동,김성래,Choi, Cheol Min,Kim, Ki Dong,Kim, Sung Lae 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.2
Because of its unique ordnance or operational requirements, military aircraft has potential risks different from civil aircraft. This explains why there is no global document for military airworthiness and each nation has its own sovereign authority. But harmonized airworthiness activities among authorities are required to reduce cost and time for recent multinational programs. In this study, we show the airworthiness policy of the European Military Airworthiness Authorities and U.S. DOD Authorities which facilitate recognition of certificates and approvals issued by any other authorities. And we propose future works for Korea military airworthiness society to develop organizational recognition system.
최철민(Cheol Min Choi),김기동(Ki Dong Kim) 한국항공우주학회 2016 한국항공우주학회 학술발표회 논문집 Vol.2016 No.4
군용 항공기는 민간 항공기와 달리 무장, 장착물 등으로 인한 위험도를 수반하며, 각 운용 주체의 고유한 작전 요구도를 만족해야 한다. 이런 특성은 각 나라가 고유한 감항 정책과 권한을 가지도록 해 왔다. 그러나 다국적 항공기 개발 프로그램 등의 사례에 각 국가별 감항 요구도를 각자 충족시키는 작업은 상당한 복잡도와 비효율성을 수반하는 작업이 된다. 본 연구에서는 다국적 군사협력체에서 적용을 시도하고 있는 군용 항공기의 감항 인정 정책, 그 중에서 유럽의 군용 항공기 감항 인정 정책을 살펴보았다. 궁극적으로 군 감항 공동체를 추구하고 있는 유럽방위청은 자원의 효율적 배분과 재사용을 통해 각 국 감항 당국에 경제적 효과를 제공할 수 있는 인정 정책을 수립하였고, 인정을 위한 중요 단계에 조력자로서 적극 참여하여 각 국 군감항 당국의 권한을 인정하면서 인정 정책의 조정자의 역할을 하고 있음을 알 수 있었다. Because of its unique ordnance or operational requirements, military aircraft has potential risks different with civil aircraft. This explain why there is no global document for military airworthiness and each nation has its own sovereign authority. But harmonized airworthiness activities among authorities are required to reduce cost and time for recent multi-nation program. In this study, we shows the European Military Airworthiness Authorities’ recognition policy which facilitate recognition of certificates and approvals issued by any other authorities. European Defense Agency provides appropriate action to support and coordinaterecognition activities among partner nations through its airworthiness office.
임상원저 : 구개열 언어에 대한 Screening test 와 설문조사의 비교분석
권종진(Jong Jin Kwon),장현석(Hyun Seok Jang),박영준(Young Joon Park),최철민(Cheol Min Choi),전상호(Sang Ho Jeon),장수정(Su Jeong Jang),임재석(Jae Suk Rim) 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6
Purpose : This study was carried out to evaluate the abnormalites of the speeches of the cleft patients and compare the results of the speech evaluations of a speech pathologist with those of parents. Materials and Methods: Eleven cleft patients` parents were questioned about their children`s speech and then the speeches of the cleft patients were evaluated by a speech pathologist and their results were compared with those of parents. Results: Nasal emission was noted in twenty percent of patients, with thirty percent demonstrating hypernasality and all demonstrating no hyponasality and aspirate. And twenty percent of patients show hoarseness. There was no statistically significant difference in the sensitivities to nasal emission between the speech pathologist and parents (p>0.05). However the speech pathologist is more sensitive to hypernasality than parents(p<0.05).
양악 수술후 상악전진에 의한 상순 및 비부의 연조직 변화에 대한 두부계측방사선학적 연구
임재석,최철민 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.3
In case of dentofacial deformity patient, Lefort I osteotomy and BSSRO are popular methods to correct the deformity. The purpose of this orthognathic surgery is to achieve esthetic facial appearance and proper function. Various articles have been reported on soft tissue change after orthognathic surgery in terms of esthetics. Especially a change of soft tissue in upper lip and nose is important to gain facial esthetic profile. To obtain accurate prediction of postsurgical esthetics, a proper understanding of relationship between maxillary surgical movement and soft tissue change. In other words, it is very helpful in treatment planning and progonsis of orthognathic surgery to predict soft tissue changes related to hard tissue chamge. A retrospective study of selected patients was undertaken to estimate and analyze the changes of soft tissue in upper lip and nose following surgical correction with Lefort I osteotomy and BSSRO. Preoperative, postoperative, and retention period data derived from lateral cephalometric analysis.
구개결 언어에 대한 Screening test와 설문조사의 비교분석
임재석,권종진,장현석,박영준,최철민,전상호,장수정 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6
Purpose : This study was carried out to evaluate the abnormalites of the speeches of the cleft patients and compare the results of the speech evaluations of a speech pathologist with those of parents. Materials and Methods: Eleven cleft patients' parents were questioned about their children's speech and then the speeches of the cleft patients were evaluated by a speech pathologist and their results were compared with those of parents. Results : Nasal emission was noted in twenty percent of patients, with thirty percent demonstrating hypernasality and all demonstrating no hyponasality and aspirate. And twenty percent of patients show hoarseness. There was no statistically significant difference in the sensitivities to nasal emission between the speech pathologist and parents (p>0.05). However the speech pathologist is more sensitive to hypernasality than parents(p<0.05).