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윈도우 마스킹을 이용한 종단형 감정 음성합성시스템의 강인한 주의집중 정렬 기법
최병진(Byoung Jin Choi),천성준(Sung Jun Cheon),조원익(Won Ik Cho),김석민(Seok Min Kim),손병찬(ByungChan Son),김남수(Nam Soo Kim) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
본 논문은 윈도우 마스킹을 이용하여 종단형 감정 음성합성시스템(end-to-end speech synthesis system)의 강인한 어텐션 정렬 기법을 제안한다. 딥러닝을 이용한 종단형 음성합성 시스템에서는 주의집중 기법 (attention mechanism)을 통해 텍스트와 오디오의 시퀀스 사이의 정렬을 학습한다. 하지만, 주의집중을 통한 정렬은 추론시 단일 프레임에서 전체 텍스트 시퀀스에 대한 소프트맥스 값을 구하기 때문에 단어, 글자 등을 건너뛰는 skipping과 반복하는 repeating등의 문제가 발생한다. 본 논문에서는 윈도우 마스킹을 통해 텍스트와 오디오 시퀀스 사이의 단조로운(monotonic) 정렬을 만들며, 위의 skipping과 repeating등의 문제를 해결하는 강인한 주의집중 정렬 기법을 적용해 보았다. 다감정 데이터셋을 이용한 실험을 통해 종단형 음성합성시스템에서의 주의집중 정렬이 개선됨을 확인 할 수 있었다.
김대성,노병선,조남천,김익용,권순범,배금석,노광수 대한소화기학회 2000 대한소화기학회지 Vol.36 No.4
Background/Aims : Pancreatic pseudocyst is the most common cystic lesion in the pancreas. There are several treatment methods with variable results. The objectives of this study were to compare each treatment method and to suggest the appropriate treatment option for improving its prognosis. Methods : The clinical records of 78 patients with pancreatic pseudocysts treated from 1987 to 1997 were reviewed retrospectively. Incidence, etiology, treatment methods of pancreatic pseudocysts were analyzed. Results: Among 45 cases of the cysts less than 5 cm in diameter, 26 (57.8%) cases were managed conservatively. In 15 cases of cysts between 5 cm and 10 cm, operation was performed in 11 (73.4%) cases. In 15 cases of cysts larger than 10 cm in diameter, operation was performed in 12 (80%) cases. Percutaneous drainage performed in 8 cases revealed good result without recurrence. Six recurrent pseudocysts occurred after conservative management (2), internal drainage (2), and resection (2). Conclusions: The results of our study showed that size of pseudocyst was a main factor in selecting treatment modalities. Percutaneous drainage was an excellent procedure in the cases in which operation was not proper. All treatment modalities showed similar results in recurrence rate.
복부외상후 발생한 신동맥-하대정맥간 동정맥루 1예 : 신동맥 가성동맥류 형성후 색전술로 치료된 예
김영주,노병선,조남천,김익용,정진형 대한외상학회 1999 大韓外傷學會誌 Vol.12 No.2
$quot;Renal vascular injuries such as transection, thrombosis, dissection, and arteriovenous fistula formation are unusual but well recognized consequence of abdominal trauma. An arteriovenous fistula between the renal artery and vein is a rare complication after trauma. We report a case of direct renal artery to inferior vena cava fistula after penetrating abdominal trauma. The diastolic hypertension was noted and renal morphology was changed to atrophy due to high flow fistula. Using a vascular obstructing device, steel coil was used during transcatheter embolization and balloon angioplasty of a high flow fistula. Fistula was embolized successfully, with immediate improvement of symptoms and without complication.$quot;
기술 및 비 기술 요소를 고려한 무기체계 상호운용성 평가 모델
한익준,방춘식,윤광식,천재영,김형균,조병인,Han, Ik-Joon,Bang, Choon-Sik,Yoon, Gwang-Sik,Cheon, Jae-Young,Kim, Hyung-Gyoon,Cho, Byoung-In 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.4
In the modern warfield, as the defense systems has been digitalized, intelligent, and working with network, the importance of interoperability among the systems has been also increasing. KMND(Korean Ministry of National Defense) has developed and used the SITES(Systems Interoperability Test & Evaluation System) based on Korean LISI(Levels of Information Systems Interoperability). SITES had been developed in order to evaluate the interoperability among information systems from the viewpoint of technical attributes. In this paper, we propose the extended interoperability evaluation model which can be applied not only the information systems, but also the weapon systems. Moreover, the extended interoperability evaluation model also includes the consideration of non-technical attributes.
Chlamydomonas reinhardtii 변이체의 Ribulose - 1 , 5 - Bisphosphate carboxylase 에 관한 연구
홍순주,김영명,이진하,천병익 ( Sun Joo Hong,Young Myeong Kim,Jin Ha Lee,Byoung Ik Cheon ) 생화학분자생물학회 1984 BMB Reports Vol.17 No.2
Ribulose-1, 5-bisphosphate carboxylase isolated from acetate requiring mutants, KX8215 and KX8261, of Chlamydomonas reinhardtii which were obtained by N-methyl-N-nitrosoN-nitrosoguanidine treatment have been characterized. Divalent metal cations, Mg^(2+), Ni^(2+), and Co^(2+) appeared to enchance the enzyme activity whereas halogen anions, Cl^-, I^-, and Br inhibited the enzyme activity. No difference between the mutant enzymes and that of the wild type has been detected in regards of ion effects, pH requirement, and the level of enzyme protein. Optimum temperature of the enzymes from both mutants were found to be higher at 35℃ than at 25℃ of the wild type enzyme. The specific activities of the mutant enzymes were remarkably lower than that of the wild type enzyme whereas Km(RuBP) and Km (CO₂) values of the former were significantly higher than those of the later, indicating that the affinities of the enzyme for RuBP and/or CO₂ are reduced as a result of the mutation. These results seem to support the previous indication that the lowered activities of the mutant enzymes would be due to the alteration in a structural gene for the large subunit in the enzymes and thus the inheritance of the mutation is non-Mendelian.