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유승열 한국반도체디스플레이기술학회 2012 반도체디스플레이기술학회지 Vol.11 No.3
Electronics in modern lives have become more miniaturized and precise. Multi Layered Ceramic Capacitor (MLCC) occupies 50% of electronic components consisting of electronics. This high volume of the production needs high speed and more precise machine performances. The dominate parts of the production equipments are the module transporting components and the visual inspection module. Most visual inspection has been off-line because of the image processing time. In this paper, a new image processing method is proposed to reduce thousands of matrix calculation for image processing and realize on-line high speed inspection.
동의보감(東醫寶鑑) 중 보중익기탕(補中益氣湯)의 임상응용(臨床應用) 연구(硏究) - 문헌고찰 및 활용성을 중심으로 -
유승열,임영환,국윤범,You, Seung-Yeol,Lim, Young-Hwan,Kook, Yoon-Bum 대한한의학방제학회 2009 大韓韓醫學方劑學會誌 Vol.17 No.1
To beef up natural immunity, we have used Bojoongikgitang which has been known to treat enervation in the oriental medicine. This study is analyzed out structure material and the chief virtue of a prescription through Literature Study on Bojoongikgitang and Clinical Application. And this study is investigated to make sure of the necessity and additional symptoms in using Bojoongikgitang. The results are as follows : 1. It is regarded that the structure materials of Bojoongikgitang consist of Astragali Radix one jeon(錢) five poon(分), Ginseng Radix, Atractylodis Macrocephalae Rhizoma, Glycyrrhizae Radix one jeon for each, Citri Pericarpium, Angelicae Gigantis Radix five poon for each, Cimicifugae Rhizoma, Bupleuri Radix three poon for each. 2. The necessity symptoms in using Bojoongikgitang are a pale complexion, drowsy eyes(目無精光), vigorless, lethargy, sluggish talk. 3. The fittest prescriptions prior to the necessity symptoms in using Bojoongikgitang are Bojoongikgitang added Paeoniae Radix Alba, Scutellariae Radix in fever, exterior heat, mild fever, Bojoongikgitang added Ephedrae Radix, Tritici Fructus Levis, Aconiti Iateralis Preparata Radix in spontaneous sweating, spontaneous sweating by yang deficiency, Bojoongikgitang added Paeoniae Radix Alba, Scutellariae Radix in feeling the pulse like a flood, largeness and weakness, scatter and largeness, flood and largeness for diagnosis respectively. Bojoongikgitang Entering the heart channel by culturing the blood prescription in vexation, vexation and anxiety, Soongihwajoongtang in headache, DossiBojoongikgitang in rigor, Bojoongikgitang annexed Saengmaecsan in thirst, Daninsamtang or Jojoongikgitang in asthma, asthma by congestion of the upwardness, Eeegongsan in light eating, eschewing food, losing one's appetite, Ikweeseungyangtang in deficiency failing to control blood and blood collapsey. 4. To treat a functional disease is superior to organic one in using Bojoongikgitang.
무작위 생성 심층신경망 기반 유기발광다이오드 흑점 성장가속 전산모사를 통한 소자 변수 추출
유승열,박일후,김규태,You, Seung Yeol,Park, Il-Hoo,Kim, Gyu-Tae 한국반도체디스플레이기술학회 2021 반도체디스플레이기술학회지 Vol.20 No.3
Numbers of studies related to optimization of design of organic light emitting diodes(OLED) through machine learning are increasing. We propose the generative method of the image to assess the performance of the device combining with machine learning technique. Principle parameter regarding dark spot growth mechanism of the OLED can be the key factor to determine the long-time performance. Captured images from actual device and randomly generated images at specific time and initial pinhole state are fed into the deep neural network system. The simulation reinforced by the machine learning technique can predict the device parameters accurately and faster. Similarly, the inverse design using multiple layer perceptron(MLP) system can infer the initial degradation factors at manufacturing with given device parameter to feedback the design of manufacturing process.
유승열,신동훈 한국반도체디스플레이기술학회 2011 반도체디스플레이기술학회지 Vol.10 No.4
Electronics in modern life have become more miniaturized and precise and new technology of electronic components has made these trends possible. The explosive demand of electronic components needs more high-speed and accurate performance of manufacturing processes. For high-speed actuation, solenoids, voice coil motors and piezo motors have been used. A solenoid actuator characterized by low price, available small size, and convenience is one of the main components of production equipments requiring compact and high-speed actuators. Since these actuators show millisecond order responsiveness, the improvement of 1~2msec is very important in industrial applications. In this paper, the mathematical model of the solenoid is formulated and simulated using SIMULINK^®. To verify the model, the responses for step input with open-loop control is obtained and compared with the simulation result. In order to improve the responsiveness, Hold voltage method is introduced and optimal value between spring constant and hold voltage is suggested.
해양플랜트 장비 성능 모니터링 시스템을 위한 데이터베이스 설계
유승열,서주완,이재철,황세윤,황호진,이순섭,Yoo, Seung-Yeol,Seo, Ju-Wan,Lee, Jae-Chul,Hwang, Se-Yun,Hwang, Ho-Jin,Lee, Soon-Sup 해양환경안전학회 2020 海洋環境安全學會誌 Vol.26 No.5
안전한 해양플랜트 운용을 위해 장비 성능평가를 실시하고 그 결과를 모니터링 할 수 있는 시스템이 필요하다. 현재는 육상으로부터 멀리 떨어진 해양플랜트의 특성상 장비 성능평가를 위해 정기적으로 계측 데이터를 저장매체에 저장한 후 육상으로 운반해야한다. 이로인해 성능평가 주기가 길어지고, 다음 성능평가가 시행되기 전까지의 장비의 성능 저하 정도를 알 수 없어 장비의 고장을 방지하기 어렵다. 따라서 육상이 아닌 해양플랜트 내에 온보드(on-board) 형태의 장비 성능 모니터링 시스템을 구축할 필요가 있다. 본 논문에서는 해양플랜트 내에서 장비 성능을 평가하고 그 결과를 가시화하는 장비 성능 모니터링 시스템을 개발하기 위한 초기 단계로, 장비 성능 모니터링 시스템의 데이터베이스를 설계 및 구축하고자 한다. 이를 위해 주요 장비의 태그 데이터를 선정하여 분석을 진행하였다. 최종적으로 장비 상태를 실시간으로 계측한 데이터를 해양플랜트 내에서 저장 및 관리하기 위해 온보드 형태의 장비 성능 모니터링 시스템을 위한 데이터베이스를 설계 및 구축 하였다. To ensure the safe operation of offshore plants, a system is needed for evaluating the equipment performance and for monitoring the results. Currently, owing to the operating environments of of shore plants situated far from the land, measurement data must be periodically stored in storage devices and carried on the land for evaluating the equipment performance. Consequently, it is difficult to prevent equipment failure because the performance evaluation cycle is long. Furthermore, until the next performance evaluation is conducted, it is difficult to determine the equipment's degree of performance degradation. Hence, it is necessary to install an onboard equipment performance monitoring system within the offshore plant. In this study, to evaluate and visualize the results of equipment performance within an offshore plant, a database was designed as the initial step towards the development of an equipment performance monitoring system. The tag data of major equipment were selected and analyzed. Furthermore, in order to store and manage the data measured in real time within the offshore plant, a database was developed for the onboard equipment performance monitoring system.