• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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• pp.148-150
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• 1988

The output characteristics of VSI by transistor depend upon bias signal with drive circuit. As the CTI is one of the VSI, takes case PWM output voltage. This Inverter operation is based upon position and negative of sinusoldal PWM signal by carrier triangular wave and compared sine one. Besides, the Inverter operation system required digital signal for microprocessor, sampling method of Inverter driver signals study for get rid of generated signal is error. In the paper, the method of 3 level PWM signal for CTI was studied. This method of signals depend upon caculated switching position of natural sampling with $10^{-6}$ modulation error for time flowchart programs.

• The Journal of Korean Physical Therapy
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• 제4권1호
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• pp.7-11
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• 1992

This study was to consider the effect of PUVA treatment on patients with skin disease. The result can be summarized as follows : 1) PUVA treatment may effect directly on lymphocytes to be permeable locally in Skin disease. 2) PUVA treatment may effect on abnormal immune reacton in skin disease. The significance on the effect of PUVA treatment is still unknown. So, we will study continuously for PUVA treatment on patients with skin disease.

• 정보처리학회논문지B
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• 제8B권4호
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• pp.411-418
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• 2001

비디오 하이라이트(highlights)는 원래의 비디오 보다 짧고 많은 양의 의미를 갖는다. 기존의 파노라마 형태의 추상화 기법은 여러 프레임을 하나의 프레임으로 모자이크하는 형태이었고, TV 드라마 하이라이트 방법은 카메라의 이동이나 특수효과에 의존하기 때문에 스포츠 비디오에 적용은 부적합하다. 이 논문에서는 축구 비디오를 대상으로 시각정보와 자막을 이용하는 새로운 비디오 하이라이트 생성 방법과 이벤트 기반 비디오 인덱싱 방법을 제안한다. 하이라이트 생성은 하이라이트 생성 규칙에 따라 자막에 의해 추출된 TIT을 중심으로 시각정보에 의해 추출된 샷을 합성하여 생성하였고, 인덱싱은 자막으로 추출된 샷은 주요소로, 시각정보에 의해 추출된 샷은 부가적 요소로 구성하였다. 실험에서는 샷 추출기법 중 대표적인 컬러히스토그램과 $\chi$$^2$히스토그램과의 성능을 비교하여 제안한 하이라이트 기법이 다른 방식보다 우수함을 증명하였다.

• 경영과정보연구
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• 제4권
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• pp.501-527
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• 2000

This plan is referred about linking the department of data processing at Pusan commercial high school with the faculty of management information at Kyungnam Junior College of Information & Technology. The purpose of this plan is educating students at knowledge and skill which reflected changed through development of information technology during the last decade effectively and woke them have ability of good management of future. The effect of this plan is a protection the extravagance by mutual overlaping the quality of education and inspiration the student's will to study by organization education. This research is performed by the purpose of orgarnizing & lingking curriculums and developing plan of management. After mutual comparise and analyze the 1999's curriculm of the department of data prove ssing at pusan commercial high school and the faculty of management information at Kyungnam Junior College of Information & Technology, and receive the holding processor's opinion that based on the aim of management information and direction of employment guidance. The model of curriculum is established like this table. Prepared curriculum model is prepared like this.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.993-995
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• 1996

This paper proposes an adaptive Filtered-X LMS algorithm with robustness. The proposed system updates filter parameters to keep the performance even if the conventional Active Noise Control (ANC) system well does not work. As a result of the computer simulation, the proposed system has all the advantage of the system using the conventional Filtered-X LMS algorithm. Also some results from the proposed algorithm present that the system is stable when the Adaptive filter does not work. Therefore, the proposed system using the Adaptive Filtered-X LMS algorithm must have much advantage than the system using the conventional algorithm in the side of the stability and performance.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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• pp.311-313
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• 1994

RC(Rod Consolidation) technology in spent nuclear fuel management is an essential method and requires remote operation due to radiation exposure. Its technology may provide an effective means to double the storage capacity of spent fuel storage space. So development of this technology will provide a valuable contribution to establishing economical as well as technological basis for future spent fuel management.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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• pp.314-316
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• 1994

The operation of RC(Rod Consolidation) technology carry out highly radiation environment. It requires remote operation and automation for efficient handling and for minimizing radiation exposure to the operator. So we investigated up and down position control of shock absorber device in RC system. To verify the research experimentally, a RC system was set up and PI control method was applied. Fuzzy control method was also tested to further improve control behavior.

• 대한방사선기술학회지:방사선기술과학
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• 제13권1호
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• pp.25-27
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• 1990

• 대한방사선기술학회지:방사선기술과학
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• 제3권1호
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• pp.49-55
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• 1980

To know the effect of tube voltage to X-ray film image, authors made an experimental study on the exponential value of applied voltage and the effect of scattered ray in photographic contrast, and obtained the results as follows: 1. The exponential value of tube voltage was under the control of the applied voltage, the kinds of screens and grids, and its existence. The range of its value was from 1.03 to 5.3. 2. The efficiency of X-ray production was directly proportional to the applied voltage, and to oftain the same density, the tube current(mAs) was inversely proportional to applied voltage 3. The production of scattered rays was in proportion to the tube voltage, and the photographic contrast was mainly influenced by the scattered rays.

• 대한방사선기술학회지:방사선기술과학
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• 제3권1호
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• pp.21-27
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• 1980

It is the experimental report by using 17cm, 19cm in thickness water-phantom to investigate optimum tube voltage in taking skull roentgenography. The obtained results are as follows: 1. An adequate kVp for P-A projection is range from 80-90. 2. An adequate kVp for lateral projection is range from 75-85.