• Title/Summary/Keyword: 연도

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Fuzzy Controller Design for Kite Flight Control (풍력발전용 연의 비행제어를 위한 퍼지 제어기 설계)

  • Cho, Dong-Hyun;Kim, Jong Chul
    • Aerospace Engineering and Technology
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    • v.12 no.1
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    • pp.137-143
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    • 2013
  • In recent years, the interest in a various energy sources is increasing. Among these energies, there are many kinds of researches for the kite which can generate the energy from high-altitude wind power. There are many attempts to apply the kite to the wind power generation and ship salvage, and it must require the flight control of the kite for this applications. In this paper, we suggest this flight controller based on the flight technique of sport kite. For this controller based on the human controller, we design the simple fuzzy controller with simple fuzzy rules.

시판 연제품의 품질특성

  • 윤성숙;김소정;조우진;정연정;차용준
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.130-131
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    • 2000
  • 근래에 들어 식생활의 간편화, 다양화 및 고급화 경향으로 인하여 어육소시지, 어묵, 게맛 어묵 등과 같은 수산 연제품의 생산량은 해마다 급속한 신장을 보이고 있으며 또한 여러 가지 새로운 원료를 통한 수산 연제품의 개발도 이루어지고 있는 실정이다. 이러한 연제품의 여러 가지 부원료 중 탄력보강 및 증량제로서 일반적으로 많이 쓰이고 있는 것이 전분이고 대부분의 연제품에 이를 첨가하고 있다. 전분을 첨가하면 첨가한 전분량의 2-3배의 물을 첨가할 수 있으므로 대단히 증량효과가 좋다. (중략)

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SOFT MAGNETIC PROPERTIES OF Fe-Hf-N FILMS REACTED WITH BONDIGN GLASS

  • Kim, K. N.;Kim, B. H.;H. J. Je
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.222-223
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    • 2002
  • 자기헤드에서 사용되는 연자성 박막에서 요구되는 특성 중 가장 중요한 것은 우수한 연자기 특성의 화보와 헤드제조공정에서 필수적인 유리접합공정(MIG 헤드의 경우 약 500~600 $^{\circ}C$의 열처리) 이후에도 연자기 특성이 유지되는 내열성이다. 이러한 관점에서 우수한 연자기 특성과 내열성을 동시에 보유하는 연자성 박막재료에 대한 연구가 활발히 진행되어 Fe-TM(Hf, Zr. Ta 등)-(B. C, N) 계 등이 보고되었다[1-4]. (중략)

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5G 저지연 서비스 및 테스트베드 개발 동향

  • Hwang, Yu-Seon;Bae, Myeong-San;Sin, Jae-Uk
    • Information and Communications Magazine
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    • v.32 no.9
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    • pp.37-43
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    • 2015
  • 5세대(5G) 이동통신은 다양한 모바일 기기와 가입자의 확산에 따른 모바일 트래픽 증가를 수용할 뿐만 아니라 원격의료와 같이 저지연을 기반으로 하는 새로운 형태의 서비스를 제공함을 목표로 한다. 저지연 서비스는 수 밀리세컨드 (ms) 이내의 단대단 지연 요구사항을 가지며 무선 구간에서의 전송지연도 기존 시스템 대비 획기적인 단축을 필요로 한다. 본고에서는 5G 저지연 서비스의 개념 및 요구사항, 그리고 저지연 무선 기술 및 테스트베드 개발 동향에 대해서 알아본다.

KIST "산학연협력연구동 및 최형섭 연구동" 준공

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.33 no.7 s.374
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    • pp.8-10
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    • 2000
  • 총사업비 1백10억원을 들여 최근 "산학연협력연구동 및 최형섭연구동"을 준공한 KIST박호군 원장은 본지와의 특별인터뷰에서 "이번 최형섭연구동 준공을 계기로 기업 및 대학과의 협력연구를 보다 활성화하고 산ㆍ학ㆍ연간 유기적인 협력체를 구축함으로써 산업경쟁력 강화와 신산업 창출에 나설 예정"이라고 말했다.

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Prevalence Rate of Lead Related Subjective Symptoms in Lead Workers (연취급 근로자의 연폭로 수준에 따른 주관적 자각증상 호소율)

  • Jeong, Du-Shin;Kim, Hwa-Sung;Ahn, Kyu-Dong;Lee, Byung-Kook
    • Journal of Preventive Medicine and Public Health
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    • v.26 no.2 s.42
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    • pp.251-267
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    • 1993
  • The relationship between lead related subject symptoms and lead exposure indices was studied in 435 male lead workers in thirteen lead using industries. 212 male office workers who were not exposed to lead occupationally were also studied as a control group. Fourteen lead related symptoms were selected. They were further subdivied into 4 sub-symptom groups such as 1) gastrointestinal, 2) neuromuscular and joint 3) constitutional, and 4) psychological symptoms. Symptom questionnaires were provided to the workers and filled up by themselves and reconfirmed by interviewer(doctor). The test used fer the evaluation of lead exposure were blood lead(PbB), zinc protoporphyrin in whole blood(ZPP), hemoglobin(Hb), hematocrit (Hct), delta-aminolevulinic acid in urine(DALA). The results obtained were as follows; 1. The higher prevalence rate in the sub-group of neuromuscular and joint symptoms was observed in occupationally lead exposed subjects than non-exposed subjects. Among the sub-groups, the most frequent symptom was 'numbness of finger, hands or feet', and the prevalence of the symptom of 'arthralgia', 'weakness of fingers, hands or feet' and 'myalgia' were higher in order. 2. While the symptom which showed the biggest difference of prevalence rate among the 14 symptoms between exposed and non-exposed subjects was 'numbness of fingers, hands or feet', the symptom which showed the highest prevalence rate was 'feeling tired generally' in exposed and non-exposed subjects, but no statistical difference of symptom prevalence were observed. 3. In total study population, PbB and ZPP had dose-response relationship with 4 symtoms of neuromuscular and joint symptoms ('numbness of finger, hands or feet', 'arthralgia', 'weakness of fingers, hands or feet' and 'myalgia') and one symptom of gastrointestinal group('intermittent pains in lower abdomen'). 4. In lead exposed workers, only neuromuscular and joint symptoms group showed dose-response relationship with PbB and ZPP, 5. In lead exposed workers, the prevalance rate of overall symptoms of lead workers with age below 39 years was higher than that of lead workers with age above 40. While neuromuscular and joint symptoms group had a dose-response relationship with PbB in former group, it had a dose-response relationship with ZPP in latter group. 6. Age adjusted odds ratios of symptoms of non-exposed with exposed and odds ratios of low exposed with high exposed workers showed the dose-response relationship of lead exposure with neuromuscular and joint symptoms group('numbness of fingers, hands or feet', 'arthralgia', 'weakness of fingers, hands or feet' and 'myalgia') and gastrointestinal symptoms group('intermittent pains in lower abdoman').

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