• Title/Summary/Keyword: KIST

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Biological properties of $\beta$-ketoacetoanilide chlorides against late blight of tomato (베타-케토아세트아닐라이드 염화물 유도체의 토마토 역병에 대한 작용 특성)

  • Choi, Gyung-Ja;Jang, Kyoung-Soo;Kim, Jin-Cheol;Lee, Seon-Woo;Cho, Kwang-Yun;Nam, Kee-Dal;Hahn, Hoh-Gyu
    • The Korean Journal of Pesticide Science
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    • v.8 no.2
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    • pp.137-144
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    • 2004
  • [ $\beta$ ]-Ketoacetoanilide chloride derivatives containing a substituent at 4 in phenyl group (para) reduced specifically the development of tomato late blight caused by Phytophthora infestans. Among $\beta$ketoacetoanilide chloride derivatives, five (KIST163, KIST170, KIST260, KIST263, and KIST267) were selected and tested for their protective, curative, systemic, persistent activities, and disease control efficacy against tomato late blight on adult plants. They exhibited a strong l-day protective activity and $EC_{50}$ of KIST163 and KIST170 were 21.9 and $14.5{\mu}g/mL$, respectively. However, they had little curative and systemic activities. Good persistence of KIST163 and KIST170 on tomato plants were observed against P. infestans; both KIST163 and KIST170 at $100{\mu}g/mL$ showed control values more than 75% in a 7-day protective applications. In addition, the two chemicals effectively controlled the occurrence of P. infestans on adult tomato plants. These results indicate that five $\beta$-ketoacetoanilide chloride derivatives are foliar fungicides with a preventive action and KIST163 and KIST170 have a potential for the control of tomato late blight in the fields.

LSTM based Gait Phase Estimation Method Robust to Changes in Gait Speed (LSTM 기반 보행 속도 변화에 강인한 웨어러블 로봇의 보행 위상 추정 방법)

  • Kim, Ho-Bin;Lee, Jong-Bok;Kim, Sun-Woo;Kim, Sang-Do;Park, Shin-Suk;Kim, KangGeon;Lee, Jongwon
    • Proceedings of the Korea Information Processing Society Conference
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    • 2022.11a
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    • pp.429-431
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    • 2022
  • 하지 웨어러블 로봇의 근력 보조 성능을 극대화하기 위해서는 착용자의 보행 상태를 인식하는 보행 위상 추정 기술이 필수적으로 요구된다. 본 논문에서는 착용자의 보행 속도 변화 및 착용자 간 보행 특성 차이에도 강인하게 보행 위상을 추정할 수 있는 LSTM 기반 보행 위상 강건 인식 기술을 개발하였다. 웨어러블 고관절 보조 로봇을 착용한 총 5명의 트레드밀 및 실외 overground의 보행 센서 정보를 바탕으로 학습을 수행하였다. 저속 및 고속 보행을 포함한 다양한 보행 속도에서 정밀한 보행 위상 추정이 가능한 웨어러블 센서 조합을 도출하였고, 보행 위상 인식 정밀성은 5-Fold Cross Validation 기준 RMSE 약 1.68% 수준의 결과를 얻을 수 있었다.

Design and Control of a Dexterous Multi-fingered Robot Hand

  • Chung, Woo-Jin;Lee, Hyung-Jin;Kim, Mun-Sang;Lee, Chong-Won;Kang, Bong-Soo
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.83.1-83
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    • 2001
  • This paper presents a three-fingered robot hand, called the KIST hand, Which have one active joint and one passive joint. The thumb is fixed on the palm, and the index and the middle take lateral motions symmetrically. A mechanical clutch and an embedded force sensor, attached on the distal link of the fingers, enable the KIST hand to perform human-like functions. A result of experiment shows reliable grasping performance of the hand which maintain stable grasp under disturbances.

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