http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Sequential Relevance Vector Machine
Youngchan Jang(장영찬),Changho Son(손창호) 대한산업공학회 2014 대한산업공학회 춘계학술대회논문집 Vol.2014 No.5
This study aims to develop forecasting method based on sequential version of Relevance Vector Machine (RVM). The main idea is to perform the general optimization of the weights and hyperparameters using the current relevance vectors and newly arriving data. By doing so, sequential RVM are trained with more currently arrived data. It extends RVM algorithm to real-time and non-stationary learning processes. The accuracy and the learning time of the proposed algorithm are better than the Support Vector Machine (SVM), original RVM, and Gaussian Processes (GP).
Sequential Relevance Vector Machine
Youngchan Jang(장영찬),Changho Son(손창호) 한국경영과학회 2014 한국경영과학회 학술대회논문집 Vol.2014 No.5
This study aims to develop forecasting method based on sequential version of Relevance Vector Machine (RVM). The main idea is to perform the general optimization of the weights and hyperparameters using the current relevance vectors and newly arriving data. By doing so, sequential RVM are trained with more currently arrived data. It extends RVM algorithm to real-time and non-stationary learning processes. The accuracy and the learning time of the proposed algorithm are better than the Support Vector Machine (SVM), original RVM, and Gaussian Processes (GP).
LVC 통합 아키텍처 기반 실기동급 ACMI 모의기 개발
장영찬(Youngchan Jang),오지현(Jihyun Oh),명현삼(Hyunsam Myung),김천영(Cheonyoung Kim),홍영석(Youngseok Hong) 한국항공우주학회 2015 韓國航空宇宙學會誌 Vol.43 No.6
본 논문은 LVC 통합 아키텍처 기반의 실기동급 ACMI 모의기의 개발 내용 및 비행시험 수행 내용을 기술하였다. ACMI는 공군의 전투 및 작전능력 배양을 위한 모의 공중전투 및 지상폭격 훈련 체계로서 실제 사람이 실제 장비인 전투기를 운용하는 실기동급 시뮬레이션이다. ACMI 모의기는 LVC 통합 아키텍처 기반의 실기동급 전투기에서 데이터 링크 통신을 이용한 가상급, 구성급 시뮬레이션과의 연동 기술을 확보하기 위해 개발되었다. ACMI 모의기는 무인기를 운용하여 전투기의 기동을 모의하였는데, 전투기와 무인기는 상이한 기동 특성을 가진다. 이에 본 연구에서는 무인기의 비행 데이터를 활용한 전투기의 기동 모의 방법을 제안하였으며, 이를 무인기에 적용하여 전투기 기동과의 유사성을 검증하고자 비행시험을 수행하였다. This paper describes development contents and flight tests of an ACMI simulator based on LVC integrating architecture. ACMI is the system that provides air combat training and ground bombing training for improving fighting efficiency, that is the live simulation involving real people to operate real systems. ACMI simulator was developed for technic acquisition of LVC interoperability by using data link communication. ACMI simulator simulated maneuvering of a fighter by operating an UAV, a fighter can be distinguished from an UAV by maneuvering characteristics. This study proposes maneuvering simulation method by using flight data of the UAV, and performed its flight test for verifying similarity of fighter maneuvering.
유기 발광 소자 디스플레이를 위한 적외선 램프 소스를 활용한 열 전사 픽셀 패터닝
배형우 ( Hyeong Woo Bae ),장영찬 ( Youngchan Jang ),안명찬 ( Myungchan An ),박경태 ( Gyeongtae Park ),이동구 ( Donggu Lee ) 한국센서학회 2020 센서학회지 Vol.29 No.1
This study proposes a pixel-patterning method for organic light-emitting diodes (OLEDs) based on thermal transfer. An infrared lamp was introduced as a heat source, and glass type donor element, which absorbs infrared and generates heat and then transfers the organic layer to the substrate, was designed to selectively sublimate the organic material. A 200 nm-thick layer of molybdenum (Mo) was used as the lightto- heat conversion (LTHC) layer, and a 300 nm-thick layer of patterned silicon dioxide (SiO<sub>2</sub>), featuring a low heat-transfer coefficient, was formed on top of the LTHC layer to selectively block heat transfer. To prevent the thermal oxidation and diffusion of the LTHC material, a 100 nm-thick layer of silicon nitride (SiN<sub>x</sub>) was coated on the material. The fabricated donor glass exhibited appropriate temperature-increment property until 249 ℃, which is enough to evaporate the organic materials. The alpha-step thickness profiler and X-ray reflection (XRR) analysis revealed that the thickness of the transferred film decreased with increase in film density. In the patterning test, we achieved a 100 μm-long line and dot pattern with a high transfer accuracy and a mean deviation of ± 4.49 μm. By using the thermal-transfer process, we also fabricated a red phosphorescent device to confirm that the emissive layer was transferred well without the separation of the host and the dopant owing to a difference in their evaporation temperatures. Consequently, its efficiency suffered a minor decline owing to the oxidation of the material caused by the poor vacuum pressure of the process chamber; however, it exhibited an identical color property.