• Title/Summary/Keyword: Techique

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Gas Permaeation Characteristics of Ceramic Membranes by the Pressurized Sol-Gel Coating Techique (가압 졸-겔 코팅법에 의한 세라믹막의 기체투과 특성)

  • 현상훈;강범석
    • Proceedings of the Membrane Society of Korea Conference
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    • 1993.04a
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    • pp.35-35
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    • 1993
  • 튜브형 $\alpha-Al_2O_3$ 담체에 졸-겔 침지코팅법과 가압코팅(pressurized coating) 법으로 boehmite 졸과 극미세 입자 SiO$_2$ 및 TiO$_2$ 졸을 코팅한 후 200$\circ$C~500$\circ$C 에서 열처리하여 복합분리막을 제조하였다.

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THE CASES REPORT OF THE CHRONIC ALVEOLAR ABSCESS TREATED BY APICOCETOMY AND INTUBATION TECHIQUE (치근단절제술후 배농관 삽입에 의한 만성치조농양 치험례)

  • Gwon, Hyeok-Chun
    • The Journal of the Korean dental association
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    • v.14 no.5
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    • pp.461-463
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    • 1976
  • The case of chronic alverolar abscess treated by apicoectomy and intubation technique is reported. The chronic alverolar abscess developed at the apex of the right lower first premolar in the 30-year old Korean female. And the lesion involved the root of the adjacent second premolar.

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Application of A Discrete Fracture Flow and Mass Transport Simulation Technique Assessing Tightness Criteria for Underground LPG Storage Cavern (지하 LPG 저장공동의 기밀성평가를 위한 분리열극개념의 지하수유동 및 용질이동 모형 모의기법 적용)

  • 한일영;조성만;정광필
    • The Journal of Engineering Geology
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    • v.5 no.2
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    • pp.155-165
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    • 1995
  • Fluid flow studies of fractured rocks require three-dimensional modeling of the fracture system. The stochastic discrete fracture models constructed by Monte Carlo simulation technique were applied to the analysis of groundwater flow and mass transport in fractured rock for the assessment of tightness criteria of underground LPG storage cavern. The parameters that most affect the conceptual discrete fracture modeling proved either fracture orientation or size and on the fract'lre flow interpretation proved conductive fracture intensity. The fracture transmissivity played important role in solute transport in fractured rock simulated by particle tracking approach. It was partly recognized that the calibrated stochastic discrete fracture model can be used for the tightness criteria of underground LPG storage cavern.

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Design of Current Probe Using Faraday Effect of Optical Fiber (광 파이버의 패러데이 효과를 이용한 전류측정용 프로브 설계)

  • Kang, Hang-Sik;Kim, Chul-Ju
    • Proceedings of the KIEE Conference
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    • 1995.07c
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    • pp.1278-1280
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    • 1995
  • A probe type fiber-optic sensing techique for electric current measurement is applied in this paper. The technique is based on the Faraday effect which meaning is that polarization state of light is rotated by magnetic field. In experiment, test wire is located at inside and outside of the probe to be measured. The experimental results prove not only linear property, but also polarization rotation property according to the distance from outside of probe.

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Estimation of A New Initial Parameter for the Lloyd-Max Algorithm (로이드-맥스 알고리즘을 위한 새로운 초기 파라메타의 추정)

  • Eon Kyeong Joo
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.31B no.7
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    • pp.26-32
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    • 1994
  • The Lloyd-Max algorithm is an iterative scheme for design of the minimum mean square error quantizer. It is very simple in concept and easy to program into a computer. However its convergence and accuracy are primarily dependent upon the accuracy of the initial parameter. In this paper, a new initial parameter which converges to a specific value when the number of output levels becomes large is selected. And an estimator using curve fitting techique is suggested. In addition, performance of the proposed method is shown to be superior to that of the existing methods in accuracy and convergence.

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하이브리드형 로봇의 동역학적 모델링과 해석에 관한 연구

  • 전승수;한창수
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1993.04b
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    • pp.315-319
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    • 1993
  • A dynamic modeling, analysis, and optimum design issuess for the Hybrid type of robot are addressed. The dynamic modeling can be used to describe acceleration and velocity properties of the system explicitly in terms of the actuating forces is coded in C language based on the kinematic influence coefficients(KIC). By using this modeling simulation, the actuating forces needed for the robot follows the given trajectory are calculated. Also, for the design concept, the optimum geometric configuration of the system that minimizes the maximum actuating forces is found by using the optimization techique.