UV 레이저를 이용한 마이크로 히터 트리밍

유승열 한국반도체디스플레이기술학회 2017 반도체디스플레이기술학회지 Vol.16 No.3

In this paper, a new method of laser trimming of thick film heater is studied. Various laser waves (IR, Green, UV) are used to ablation the heater and the process parameters are also presented. For given initial printed resisters, the cutting length should be prepared to obtain the target resister value in advance. Therefore, the cutting model is very important. The well-known model was tested and proven that it is valid only within a certain range of cutting length. A new model is proposed for a wide range of resister laser trimming. The cutting lengths and resister variation was obtained and formulated. To verify the presented method, the cutting lengths of each resister are calculated for various target resister value and laser trimming using UV is conducted.

전자부품의 고속 외관검사를 위한 시스템 설계

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.

금속판재 적층을 이용한 쾌속금형 제작기술 개발

유승열 한국기술교육대학교 2006 論文集 Vol.13 No.1

The design and fabrication of dies and molds used in manufacturing operations represents one of the most time consuming and costly phases in the development of new products. New realities of the product market require faster product development and reduced time to market. To reduce the time and cost of the product development and manufacturing processes, the new technologies of Rapid Prototyping (RP) and Rapid Tooling (RT), which have been developed over the last two decades, are revolutionizing manufacturing development. One type of RT technology, which is the focus of this paper, is Profiled Edge Laminate (PEL) tooling. To facilitate adoption of the PEL method by industry, a complete tooling design process has been developed. PEL tooling is a laminated tooling method involving the assembly of an array of laminations whose top edges are simultaneously profiled and beveled based on a CAD model of the intended tool surface. The main goal of this research is to develop an advanced design process for PEL Tooling, that is, the required synthesis and analysis tools, and methodologies for designing PEL tools. The advanced PEL Tooling design process consists of slicing, simulation, and fabrication processes. The resulting design process is demonstrated by completely designing and fabricating a simple industrial PEL tool based on a CAD part shape.

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 대한한의학 방제학회지 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.

알레르기성 비염 환자의 피부반응검사 및 RAST 검사의 비교

유승열,홍승인,김성완,이성만,김광일,유성근 대한이비인후과학회 1991 대한이비인후과학회지 두경부외과학 Vol.34 No.6

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 해양환경안전학회지 Vol.26 No.5

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.

멀티캐스트 버시티 트래픽하에서 입출력단에 버퍼를 갖는 ATM 교환기의 성능 분석 ( Performance of input and output Queuing ATM Switch Under Multicast Bursty Traffic )

유승열,김석희,최병석,박현민,박재현 대한전자공학회 1997 대한전자공학회 학술대회 Vol.1997 No.1

알레르기성 비염환자에서 설문조사의 분석

유승열,김광일,정우찬,강성훈 대한이비인후과학회 1995 대한이비인후과학회지 두경부외과학 Vol.38 No.10

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.

"동의보감(東醫寶鑑)" "담음문(痰飮門)"의 병증(病症)에 따른 처방(處方) 고찰(考察)

유승열,국윤범,You, Seung-Yeol,Kook, Yoon-Bum 대한한의학방제학회 2011 대한한의학 방제학회지 Vol.19 No.1

Objectives : This study was performed to investigate 93 prescriptions which are all affiliated Phlegm-Fluid Substances chapter depending on Symptoms in Dongeuibogam. Methods : The following conclusions are reached through investigations on the applications of prescriptions which are all affiliated Phlegm-Fluid Substances chapter Depending on Symptoms in Dongeuibogam. Results : 1. Fluid detention disease article represents that Byukeum(癖飮), Hyuneum(懸飮) and Yueum(流飮) have the same treat criteria, in effect, there is not any problem left in case it is reached fluid detention disease is not 8 but 6. 2. Strong water-utilization herbs can be mainly used in treating Fluid detention disease, eliminating phlegm warm herbs are almost used two times more than eliminating phlegm cold herbs in eliminating phlegm disease. 3. Arisamatis Rhizoma is only used by itself in Chongmongseok-hwan, the others are used at the same time with Pinelliae Rhizoma. As a result of this, Arisamatis Rhizoma has an effects on eliminating Wind relative dusease but eliminating phlegm disease which can cause upper body phlegm disease. 4. Fritillariae Cirrhosae Bulbus and Tricosanthis Radix are able to get rid of obstinate phlegm-Fluid disease in eliminating phlegm cold herbs. 5. Gamisachil-tang and Gamieejin-tang which are located in throat chapter are more proper prescriptions to treat phlegm at throat than Gwache-san or Jeoljehwadam-hwan which is located in Phlegm-Fluid Substances chapter in Dongeuibogam. 6. Glycyrrhizae Radix is used 46 times(49%) at total 93 prescriptions in eliminating phlegm disease herbs. It seems to be needed more study whether Glycyrrhizae Radix can control the Phlegm-Fluid disease or not. Conclusions : The 93 prescriptions for eliminating Phlegm-Fluid Substances in Dongeuibogam are mainly composed of Sobanha-tang, Eejin-tang and Baeksang-hwan, etc.