• 제목/요약/키워드: Jeon Suk-hee

검색결과 227건 처리시간 0.025초

웨어러블 컴퓨터 환경의 개인 네비게이션 수행에 다중양식 단서가 미치는 영향 (Effects of Multi-modality Cues on Personal Navigation in Wearable Computing)

  • 전하영;채행석;홍지영;한광희
    • 대한인간공학회지
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    • 제26권4호
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    • pp.1-7
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    • 2007
  • Navigation system or way finding in Wearable computer help disabled and impaired persons and it is impossible to be safe and efficient for drivers as well as pedestrian. Wearable computing situation must be multi-tasking simultaneously and users need minimal attention. In this paper, we used virtual environment as real way-finding similarly. The direction cues of navigation system are investigated as visual only, visual & auditory, and visual & speech. In the paper, the trial demonstrates the difference of performance in detection of directing and performance of motor and subjective satisfaction of user.

광기법을 이용한 고정도 과도전압측정기 (High Quality Transient Voltage Measuring Device Using Optical Technique)

  • 이복희;길경석;전덕규
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1995년도 추계학술대회 논문집 학회본부
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    • pp.441-443
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    • 1995
  • A new optical-resistive voltage divider, which consists of light emitting diode, optic fiber, PIN-photo diode and a high qualify shielding resistive divider, whose total response time is 7.35 [ns], has been obtained. The optical to electrical signal converter was constructed with GaAsP series light emitting diode. The response characteristics have been verified by applying the Marx impulse voltage generator experimentally. Comparing with the performance of conventional resistive voltage divider, the characteristics of the proposed optical-resistive voltage divider are more excellent in step response and less sensitive to electromagnetic interference.

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시설보호아동과 일반아동의 정서지능 및 유머감각이 공격행동에 미치는 영향 (Effects of Emotional Intelligence and the Sense of Humor in Institutionalized and At-Home Children on their Aggressive Behavior)

  • 석주영;안옥희;박인전
    • 한국생활과학회지
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    • 제13권2호
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    • pp.237-250
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    • 2004
  • This study explored the effects of emotional intelligence and sense of humor in institutionalized and at-home children on their aggressive behavior by using a path model. The participants in this study were 62 institutionalized children and 98 children reared at home, residing in an undisclosed city. The institutionalized children had a lower level of emotional intelligence and sense of humor than children at home. Also, the institutionalized children had a higher level of aggressive behavior than at-home children. Effects of emotional intelligence and sense of humor on the aggressive behavior were significantly different between institutionalized and at-home children.

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토코투칸에서 발생한 간 혈색소침착증(Hemochromatosis) (Hepatic Hemochromatosis in a Toco Toucan (Ramphastos toco))

  • 김용안;이보람;김양범;전재경;오석헌;윤승희;권수완;김대용
    • 한국임상수의학회지
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    • 제30권4호
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    • pp.329-331
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    • 2013
  • An 11-year-old female toco toucan (Ramphastos toco) kept in outdoor exhibit was presented with sudden onset of anorexia and hypodynamia. After routine physical examination, the patient was treated. However, the bird died that evening. Necropsy revealed moderate swelling of the liver with yellowish discoloration. Based on the gross pathology as well as histologic evidence of iron pigments accumulation throughout the hepatocytes, hepatic hemochromatosis was diagnosed.

Phthalocyanine Organic Semiconductor for $NO_x$ Gas Sensor

  • Jung, Suk-Bong;Kim, Jae-Chang;Jeon, Hee-Kwon;Lee, Duk-Dong;Lee, Jong-Gi;Choi, Dong-Han
    • The Korean Journal of Ceramics
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    • 제6권3호
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    • pp.296-299
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    • 2000
  • The electrical properties of various metal phthalocyanine(MPc) thin film sensors were tested in the presence of $NO_x$ gas. Among the Phthalocyanine(Pc) thin films, lead phthalocyanine(PbPc) thin film showed the best results nd its sensitivity was over 80% at 5ppm of $NO_x$ gas. Optimal operating conditions including response time and cyclic treatment of $NO_x$ were tested and discussed.

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벡터제어-구동 유도전동기의 파라미터 변동에 대한 비선형 제어특성의 해석 (Analysis of Nonlinear Control Characteristic for the Parameter Variation of Vector Control-Fed Induction Motors)

  • 손진근;석원엽;송양회;전희종
    • 전기학회논문지P
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    • 제53권2호
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    • pp.51-57
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    • 2004
  • Vector control schemes are used in inverter-fed induction motor drives to obtain high performance. Crucial to the success of the vector control scheme is the knowledge of the instantaneous position of the rotor flux. However, the position of the rotor flux change with temperature and magnetic saturation of the motor. This variation cause deterioration of both steady state and dynamic operation of the motor drives. Performance degradation is in the form of input-output torque nonlinearity and saturation of the motor. Analytic expressions are derived to evaluate the effects due to parameter sensitivity. Also, dynamic response is shown by speed command with the variation of stator and rotor resistance.