http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
서재현,임보미,음호민,김흥묵,허남호,Seo, J.H.,Lim, B.M.,Eum, H.M.,Kim, H.M.,Hur, N.H. 한국전자통신연구원 2014 전자통신동향분석 Vol.29 No.3
한정된 주파수 자원을 사용하는 지상파 디지털방송 기술은 스펙트럼 효율을 높임과 동시에 초고화질의 UHDTV, HD급 이동 서비스 등을 제공하기 위해 진화 중에 있으며, 유럽의 경우 이미 1세대를 지나 2세대로 나아가고 있다. 국내 지상파 디지털방송 시스템의 국가표준인 미국의 ATSC 표준도 2세대를 위한 ATSC 3.0 표준화를 진행 중에 있다. 본고에서는 지상파 디지털방송 표준으로 대표적인 ATSC와 DVB에서 진행되고 있는 표준화 동향 및 최근에 나타난 전세계 통일된 방송규격을 지향하는 FOBTV의 동향을 정리함으로써 국내 지상파 디지털방송 기술 개발 및 차세대 방송 표준이 나아갈 방향을 예측하는데 참고할 수 있는 정보를 제공하고자 한다.
말기암 환자에서 발생한 원인 미상의 근육병증에 의한 연구개인두부전증 1예
서재현,김예원,이재홍,박찬순 대한이비인후과학회 2010 대한이비인후과학회지 두경부외과학 Vol.53 No.4
Velopharyngeal incompetence is rare and difficult to diagnose, especially if there is no structural or neurologic cause for it. The authors have recently experienced a case of unexplained velopharyngeal incompetence in a 67-year old female patient with terminal-staged breast cancer (T4N2M1),who had received surgery before but failed. During her hospitalization for palliative treatment,the patient was referred to our department for hypernasality, nasal regurgitation and poor oral intake. Although clinical evaluations were completed to find the causes of velopharyngeal incompetence,no definite causes were found. Authors performed a palatopharyngoplasty with the superiorly based pharyngeal flap and her symptoms were cured. We report our case with a brief review of the literatures. Korean J Otorhinolaryngol-Head Neck Surg 2010;53:248-51
서재현,김부영,장기홍,전범조 대한이비인후과학회 부산,울산,경남 지부회 2009 임상이비인후과 Vol.20 No.1
Proper fitting of hearing aids by well-trained professionals rarely results in complication. Although the majority of patients who have ear canal impressions taken experience no adverse outcomes, patients with impacted earmold material within the middle ear after traumatic perforation of the tympanic membrane may present with diverse otologic complaints. In this article, we present an unusual complication after hearing aid fitting that required surgical management. A 64-year-old female who had undergone left hearing aid fitting 3 years before our evaluation was presented with left-sided otorrhea. She was identified that had encountered severe complications from improper earmold fitting that required surgical intervention. The earmold was successfully removed by means of a tympanomastoidectomy. Close cooperation between hearing aid dispensers and otolaryngologists may eliminate the rare instances of complications resulting from ear mold fitting. (J Clinical Otolaryngol 2009;20: 73-76)
무기체계 품질 및 신뢰도 향상을 위한 효과적 위험관리 기법 개발 : K계열 무기체계 사례 중심
서재현,정일한,김흥빈 육군사관학교 화랑대연구소 2014 한국군사학논집 Vol.70 No.2
The quality and reliability of weapon system depends on quality assurance activity on development and production stage. It is hard to make perfect quality through quality assurance due to complex structure and production system of weapon system. In this study, we explain the procedure of quality assurance based on risk management to improve the effectiveness of quality assurance and introduce the application case of the real weapon system. In addition, the results of the application are discussed. Furthermore, we introduce the method to quantify risk identification and assessment using FME(C)A technique and propose the advanced procedure for risk identification.
패널 자료를 이용한 자본시장 규제 정책 효과추정의 한계 고찰
서재현 계명대학교 사회과학연구소 2023 한국사회과학연구 Vol.42 No.2
Financial market liberalization has allowed many emerging market economies to access global financial resources with reasonable risk premiums. Contrarily, recklessly opened markets have caused excess surges and flights of capital flows and, as a consequence, bubbles were created in the domestic markets and the probability of financial crises sharply increased. These contradicting effects of financial openness motivated many researchers to argue the necessity of capital controls(CCs) and theoretical frameworks built by them supported their arguments. However, empirical evidence on the effects of CCs are still inconclusive and this motivated us to discuss the reasons why this seemingly simple question is still unanswered. We suggest three limitations on estimating the effects of CCs that are especially prevalent in panel studies. They are 1) endogeneity, 2) inaccurate measures of CCs, and 3) heavy dependence on experiences from developing countries. We also provide some examples that tried to overcome or detour these limitations.