• 제목/요약/키워드: trouble

검색결과 1,341건 처리시간 0.028초

고밀도 EPS를 이용한 돔 구조 안전성에 대한 고찰 (Dome Structure using High-Density EPS Review of Safety)

  • 장석준;이동운
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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    • pp.119-120
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    • 2011
  • Dome structure to form a space-efficient, applied a lot of beautiful buildings with structural systems, as well as a large space structure in the form of new residential lots have been applied. And domestic demand for housing in the dome with increasing dome house using various materials, are becoming commonplace. But now the Dome House is mainly used in construction steel, wood, stone, FRP construction and building materials per unit area and the high cost, long construction time, energy efficiency, has some disadvantages such as degradation. And structural strength of the structure is weak, the natural ingredients used come from natural damage is so big. In addition, demolition of buildings in trouble when handling the environmental problems has emerged. Recently expanded polystyrene to improve these problems by using the various approaches and research is being attempted and there.

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CDMA 변조방식을 이용한 TDM-PON의 고장 ONU 검출 (Detection of Fault ONUs in TDM-PON Using CDMA Modulation Scheme)

  • 최병철;박재욱;정준회;박영일
    • 한국통신학회논문지
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    • 제33권1A호
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    • pp.1-6
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    • 2008
  • TDM-PON에서는 ONU 중 한 개가 고장을 일으켜 신호를 계속 전송한다면 PON 전체의 통신이 불가능하게 된다. 본 논문에서는 이런 환경에서 고장 위치를 찾아내는 방식을 제안하였다. 고장 ONU가 계속하여 신호를 전송하면 TDM 신호전송이 불가능하게 되므로 본 연구에서는 잡음에 강한 CDMA 전송을 이용하여 정상동작 ONU와 고장 ONU를 분리하는 방법을 제안하고, 이를 위한 알고리즘을 검증하였다.

고방사선장내 작업 로봇용 이중 방사선 감지 시스템 (A Dual Radiation Monitoring System Ror Robot Working in High Radiation Field)

  • 이남호;조재완;김승호
    • 대한전기학회논문지:시스템및제어부문D
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    • 제54권9호
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    • pp.556-558
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    • 2005
  • The effect of high irradiation on inspection systems in a nuclear power plant can be severe, especially to electronic components such as control hoards. The effect may lead to a critical malfunction or trouble to a underwater robot for inspection and maintenance of nuclear reactor. However, if information on the total accumulated dose on the sensitive parts of the robot is available, a prediction of robot's behavior in radiation environments becomes possible. To know how much radiation the robot has encountered, a dosimeter to measure the total accumulated dose is necessary. This paper describes the development effort of a dual radiation monitoring system using a SiC diode as a dose-rate meter and a p-type power MOSFET as a dose meter. This attempt using two sensors which detect same radiation improves reliability and stability at high intensity radiation detection in nuclear facilities. It uses the concept of diversity and redundancy.

샘플링 시간의 제약이 있는 환경에서의 근접센서 데이터 취득 (Data aquisition of a proximity sensor in the milited sampling time)

  • 류형선;오세호;김현;박정균;최현영;김양모
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 하계학술대회 논문집 D
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    • pp.2643-2645
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    • 2001
  • In this paper, a problem of limited sampling time that occurs essentially in digital data acquisition system is discussed. Low sampling frequency and a lot of processed data in micro-controller interferes normal operation of the controller from acquiring information in some case. To settle this problem, we design the sub-system which consists of a new simple micro-controller. which is managed the particular sensor making the trouble to main-controller system.

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실내건축업계의 리모델링에 관한 현황분석연구 (A Study on the Remodeling Market of the Interior Architecture Industry)

  • 김경숙;이윤선;김재준
    • 한국실내디자인학회논문집
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    • 제29호
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    • pp.242-248
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    • 2001
  • Even though the Korean intoner architecture market has constantly developed in the past on the basis of the economic and social growth, it has had a tough time for varied reasons since 1998. Restructuring in the construction industry is required due largely to both the lack of market demand which resulted from the foreign exchange crisis and managerial trouble which is getting worse as time goes by. In actual, as the social necessity for remodeling in skyrocketing, the remodeling is getting more acclaim. That is because old architecture generates a great amount of architectural trash, and it is necessary to look for ways to saute the energy. In the wake of these situations, the remodeling industry is drawing attention as an alternative to the marketable limitations of the existing construction industry. However, it is true that the remodeling market has yet to be activated decisively. Accordingly, the purpose of this paper is to provide a basis for entering into and activating the remodeling market of the interior architecture industry by analyzing the scale and recent conditions of the remodeling sector.

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2 Step 이상 운용 고객의 구내배전계통 지락보호시스템 구성 현황 및 문제점 검토 (A Study on Trouble and Arrangement of the Ground-Fault Protection for 2 Step Voltage Distribution System of Premises)

  • 임진성;신명호
    • 조명전기설비학회논문지
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    • 제24권10호
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    • pp.73-77
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    • 2010
  • Most accidents occurred in power receiving & transforming facility are ground fault. The quality of power supply is deteriorated since the ground fault is not detected promptly. This paper analyzes the problems about system-grounding type of 2 step power receiving & transforming facility, arrangement of protection relaying scheme and ground-fault protection system of ungrounded system. Then, this paper presents the arranging scheme of system-grounding type to improve power supply reliability.

전자맥진기(電子脈診器)의 맥상(脈狀)과 고전(古典)의 제맥체상(諸脈體狀)에 관한 연구(硏究)(I) (A Study on Pulse Condition Appeared at Classic with Pulse Condition by Electro Pulse Machine (I))

  • 김석하;홍섭희;정현정;박원환
    • 대한한의진단학회지
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    • 제13권1호
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    • pp.36-44
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    • 2009
  • Object : Pulse feeling(脈診) belongs to pulse feeling or palpation(切診) of methods of diagnosis in oriental medical terminology. Pulse appears at bio-energy condition of body, so it is a important part of disease diagnosis but we have been trouble in diagnosis by difficulty of pulse feeling(脈診). Methods : We investigate the books about pulse feeling, which are involved "Hwangjenaegyong", "Nangyong", "Maggyeng" etc. Conclusion : According to these, this paper helps you understand pulse feeling(脈診) through comparision and studying pulse condition at clasics with electro pulse machine.

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소화불량증에서 호발하는 두통의 위장질환과의 상관성에 대한 임상연구 (A Clinical Study of Correlation Between Frequently Occurring Headache from Gastrointestinal Disorder and Dyspepsia)

  • 최영규;김재관;최서형
    • 대한한의진단학회지
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    • 제14권1호
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    • pp.36-43
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    • 2010
  • Objectives: Since we found patients with dyspepsia as their major symptom had high rate of headache, would like to find out a rational diagnosis ground by using EAV correlation between headache and gastrointestinal disorder Methods: We did survey and EAV inspection on 128 patients came by gastrointestinal disorder who quoted 4 and 5 degree for their headache symptoms) Results & Conclusion The results of this study were as follows: 1. From dyspepsia, we saw higher rate by order of epigastric discomfort, bloating, stomach trouble, bleching, etc. 2. By EAV analysis, found functional deterioration by order of stomach, nerval degeneration vessel, gall bladder/bile duct, liver. 3. By EAV analysis, functional deterioration of stomach, gall bladder/bile duct, liver represent dyspepsia and nerval degeneration vessel represent headache. We found the correlation between dyspepsia and headache by observation at a time.

퍼지논리를 이용한 미성형 방지를 위한 초기 사출압 결정 (Determination of Initial Injection Pressure Based on Fuzzy Logic for Trouble Shooting of Short Shot in Injection Molding)

  • 강성남;허용정
    • 한국산학기술학회:학술대회논문집
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    • 한국산학기술학회 2001년도 춘계학술대회 발표논문집
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    • pp.99-102
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    • 2001
  • 사출성형에서 제품의 최종 품질에 영향을 미치는 중요한 인자들 중의 하나는 사출압력이다. 전통적으로 현장의 사출전문가는 오래된 현장 경험을 바탕으로 사출압력을 결정한다. 그러나 비전문가에게는 제품의 크기, 형상 그리고 사출공정의 전반적인 과정을 고려하여 적절한 사출압을 찾아내기가 쉽지 않다 본 연구에서는 퍼지 논리(fuzzy logic)를 이용하여 제품도면에 나와 있는 제품두께와 유동길이를 알면 쉽게 초기 사출압을 결정할 수 있도록 전문가의 경험을 규칙베이스화 하였다. 규칙베이스를 구성하기 위해서 현장 전문가들을 인터뷰하고 설문조사를 한 후 기술적인 문서를 작성하여야 하지만 본 연구에서는 C-Mold와 Mold FLOW와 같은 사출해석 프로그램을 이용하여 수 차례의 시뮬레이션을 반복 수행하여 규칙베이스를 구성하였다.

공간회로망법을 이용한 GIS 내부의 움직이는 도체이물질에 의한 불평등전계 해석 (Analysis of Unequal Electric Field by Moving Metal Particle in GIS Using SNM)

  • 박경수;최성열;고영호
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제51권2호
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    • pp.68-73
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    • 2002
  • In compared with air insulated switchgear, GIS has a high efficiency and confidence. Insulation method using $SF_6$ gas has a very excellent insulation characteristic for high voltage equipment but has a characteristic that insulation heredity is changed for internal unequal electric field. So analysis of time varying electromagnetic field in GIS is very important for structure design and trouble diagnosis process. In compared with established method, the SNM(Spatial Network Method) in this Paper can observe variation of electromagnetic field with real time and get result very similar to measurement. In order to Know variation of electromagnetic field distribution in fast moving particle, we make used of SNM.