• 한국초전도저온공학회:학술대회논문집
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• 한국초전도저온공학회 2002년도 학술대회 논문집
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• pp.368-370
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• 2002

We present current limiting properties of 1.2kV/70A superconducting fault current limiter based on YBCO thin films. This is consisted of 6 wafers (3 parallel $\times$ 2 serial connection) with 4 inch-diameter YBCO thin film. The quench current Iq of the switching elements vary between 33.9 and 35.6 A. Within the difference of 0.5 A in the sum of quench current Iq in two stacks, the serial connection of the stacks showed the simultaneous quench behavior in applied power of 1.2 kV/70A.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 춘계학술대회 논문집 센서 박막재료 반도체재료 기술교육
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• pp.141-144
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• 2002

We present current limiting properties of 1.2kV/70A superconducting fault current limiter based on YBCO thin films. This is consisted of 6 wafers (3 parallel ${\times}$ 2 serial connection) with 4 inch-diameter YBCO thin film. The quench current Iq of the switching elements vary between 33.9 and 35.6 A. Within the difference of 0.5 A in the sum of quench current Iq in two stacks, the serial connection of the stacks showed the simultaneous quench behavior in applied power of 1.2 kV /70 A.

• 전자공학회논문지
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• 제50권2호
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• pp.47-53
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• 2013

본 논문에서는 SATA(Serial Advanced Technology Attachment) 커넥터의 차동 임피던스 계산 방법을 적용하여 설계 변경 방법을 제안하고 신호 전달 특성을 개선하였다. 3차원 FEM(Finite Elements Method) 전자기장(Electromagnetic Field) 시뮬레이터를 이용하여 SATA 커넥터의 차동 모드 S-파라미터를 계산하고, 신호 전달 특성을 분석한다. 차동 임피던스는 Odd mode 임피던스를 이용하여 계산되므로 인덕턴스, 커패시턴스, 상호 인덕턴스, 상호 커패시턴스 값이 필요하다. 따라서 시뮬레이터를 이용하여 SATA 커넥터의 각각의 값을 추출하여 차동 임피던스를 계산하였고, 이 값은 $107.3{\Omega}$으로 설계 사양을 만족하지 못하였다. 신호 전달 특성 개선을 위해서 SATA 커넥터의 핀을 $d_x$, $d_y$ 방향으로 설계 변경하고, 각 경우의 신호 전달특성과 차동 임피던스를 분석하였다. $d_y=0.1mm$의 경우에서 신호 전달 특성이 가장 우수하게 나타났고, 차동 임피던스가 $98.7{\Omega}$으로 정합되었다. 이때, 반사손실은 1.5 GHz에서 15 dB 개선되었다.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2012년 춘계학술대회
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• pp.579-583
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• 2012

The Design of Experiment (DOE) is a most practical technique when establishing an optimal condition for production technology in Six Sigma innovation project. This research proposes the assessment of properties of error terms, such as normality, equal variance, unbiasedness and independence. The properties of six nonparametric ranking techniques for checking normality assumption are discussed as well as run test which is used to identify the randomness, and to check unbiased assumption. Furthermore, Durbin-Watson (DW) statistics and ARIMA (p,d,q) process are discussed to identify the serial correlation.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2006년도 춘계학술대회
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• pp.303-310
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• 2006

The sorting algorithms have been developed to take advantage of distributed computers. But the speedup of parallel sorting algorithms decrease rapidly with increased number of processors due to parallel processing overhead such as context switching time and inter-processor communication cost. In this paper, we propose a parallel sorting method which provides linear speedup of an optimal serial algorithm for a system with a large number of processors. This algorithm may even provide superlinear speedup for a practical system. The algorithm takes advantage of an interconnection network properties and its protocol.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.435-438
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• 2002

In this paper, a robust controller is proposed to control a robot manipulator which is governed by highly nonlinear dynamic equations. The controller is computationally efficient since it does not require the dynamic model or parameter values of a robot manipulator. It, however, requires uncertainty bounds which are derived by using properties of serial link robot dynamics. The stability of the robot with the controller is proved by Lyapunov theory. The results of computer simulations show that the robot system is stable, and has excellent trajectory tracking performance.

• 미생물학회지
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• 제16권1호
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• pp.1-10
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• 1978

In order to isolate and identify of the yeasts in Chinese cabbage Kimchi, was propared and fermented by traditional methods. 40 strains of the yeast were isolated from the Kimchi juice. As the results of the serial experiemnts on morphological, cultural and physiological properties, according to the methods of Lodder, Irzuka, Barnett and Hasegocwa, 13 species of S genera were identified as the followings ; Brettanomyces claussenii, Candida bogoriensis, C.cacaoi, C.guilliermondii, Citeromyces matritensis, Kluyveromyces vaeronae, Pichia membranaefacience, Rhodtorula glutinis, Saccharomyces bayanus, S, cerevisiae, S. pretoriensis, S. italicus, and Torulopsis salmanticensis.

• 한국시뮬레이션학회논문지
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• 제10권2호
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• pp.25-32
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• 2001

The Multiple Recursive Generator(MRG) has been considered by many scholars as a very good random number generator. For the long period md excellent statistical properties, the method of the combination with random number generators is used. In this paper, we thought the two-combined MRGs. Using the frequency and serial test, and runs test, we studied the importance of the initial seeds likewise other random number generators.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 ITC-CSCC -2
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• pp.600-603
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• 2000

In this paper, we propose the design method of distributed control system using Controller Area Network (CAN). CAN is an advanced serial communication protocol for distributed real-time control systems. It is a contention-based multi-master network whose timeliness properties come from its collision resolution algorithm which gives a high schedulable utilization and guaranteed bus access latency. With proposed method using CAN, we apply to robot controller. The effectiveness of proposed method is demonstrated by the simulation and experiment.

• 대한건축학회논문집:계획계
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• 제35권7호
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• pp.63-72
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• 2019

The purpose of this study is to apply the types of urban street pattern and the shape of streets to the master plan of a religious community complexes. The street pattern is a framework of urban structure and to understand the urban structure is helpful to understand the nature of urban streets. By analysing the precedent researches, the types of street patterns are classified as a serial pattern, a branching pattern, a grid pattern and a web pattern. The street patterns are hierarchically composed and classified as a differential development and sequential development. There are boundaries and gates where the street space is differentiated to the more private level. The urban streets continue to the architectural streets such as arcades, deck streets, corridors, lobbies and halls. The purposes and results of the master plan of this religious community complexes are as follows. 1) The school area, housing area and service area are properly separated and connected. They are separated by the building masses and connected by the street space in between. 2) The street pattern of this complexes is a serial pattern where the streets are the center of each functional building groups. The entry square is divided by the symbolic building. The one branch is school street and the other is living street. These streets are combined again to the festival street. 3) The architectural streets are organically related to the urban streets. 4) Each street spaces are of adequate form according to its properties as a place. 5) There are boundaries or gates such as a gab between buildings, posts, arches and deck streets according to the relationship between streets.