• 제목/요약/키워드: design for safely

검색결과 472건 처리시간 0.029초

중형 기동 회전익기 로터회전수 제한 수립 (Establishment of Rotor Speed Operating Limitation for Medium Class Utility Rotorcraft)

  • 박종후
    • 한국항공운항학회지
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    • 제21권2호
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    • pp.26-32
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    • 2013
  • The rotorcraft makes lift and control forces by the rotor thrust. At the development phase of the rotorcraft, the operational limitations have to be established. And it shall be demonstrated to operate the rotorcraft safely within the limitations. This paper introduces establishment and evaluation results of operational rotor speed limitations for the medium class utility rotorcraft. And it shows the follow-up activities after design changes of rotor speed indicators and aural warning systems for implementing the rotor speed limitations.

보행자 법규와 자동차 후드 및 범퍼 구조물 설계방안 (Hood and Bumper Structure Design Methodology for Pedestrian Regulation)

  • 이제완;윤경한;강연수;박경택;박경진
    • 한국자동차공학회논문집
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    • 제13권3호
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    • pp.162-170
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    • 2005
  • Although the numbers of pedestrian fatalities and injuries are steadily declining worldwide, pedestrian protection is still an important issue. Extensive researches have been carried out in the field of pedestrian protection in order to establish pedestrian safety regulations. The automobile hoods and bumpers, which pedestrians frequently run into during accidents, should be safely designed for pedestrians. Two analysis methods are utilized to design safe structures of the hood and the bumper. They are real experiment and computer simulation. In this research, a method is developed to simultaneously utilize the results from the experiment and the simulation. For design, orthogonal arrays are employed to combine the two methods. Based on this method, a hood and a bumper are designed to protect pedestrians.

KOMPSAT-2 Fault and Recovery Management

  • Baek, Myung-Jin;Lee, Na-Young;Keum, Jung-Hoon
    • International Journal of Aeronautical and Space Sciences
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    • 제3권2호
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    • pp.31-39
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    • 2002
  • In this paper, KOMPSAT-2 on-board fault and ground recovery management design is addressesed in terms of hardware and software components which provide failure detection and spacecraft safing for anomalies which threaten spacecraft survival. It also includes ground real time up-commanding operation to recover the system safely. KOMPSAT-2 spacecraft fault and recovery management is designed such that the subsequent system configuration due to system initialization is initiated and controlled by processors. This paper will show that KOMPSAT-2 has a new design feature of CPU SEU mitigation for the possible upsets in the processor CPUs as a part of on-board fault management design. Recovery management of processor switching has two different ways: gang switching and individual switching. This paper will show that the difficulties of using multiple-processor system can be managed by proper design implementation and flight operation.

전주시 객사길 보행자 중심 걷고 싶은 거리 설계 - 주민참여형 가로설계 - (The Walkable Street Design for 'Gaeksa-gil' of Jeonju City - Community Participatory Street Design -)

  • 김성균;정태영
    • 한국조경학회지
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    • 제33권3호
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    • pp.94-104
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    • 2005
  • This paper presents a streetscape design for the 'Gaeksa-gil', located in Gosa-dong and Jungang-dong, Jeonju City, which length is about 830m and width is about $8\sim10m$. The goals of the design are to make a street on which people want to walk and rest both safely and pleasantly. To achieve these goals; concepts of identity, history, placeness, commercial vitality, environmentally-friendliness, safety, amenity , and democracy have been developed. For the pedestrian safety; shared street concepts, such as crank, salalom, fort, mini-rotary etc. are adopted. For design method, community participatory design is adapted. For the design theme; the axes of Time and Space are developed and streets are divided into 3 thematic spaces, such as 'History Street,' 'Nature Street,' and 'Culture Street.' The History Street, which belongs to Time axis, is a space for experiencing past, present, and future history of Jeonju city. Nature Street, which belongs to Space axis, is a space for feeling and loaming the nature of the city. The Culture Street, which also belongs to Space axis, is a space for experiencing the culture of the city. The community participated in the whole design process through the workshop, the internet website, the street events, etc.

A Human Robot Interactive System 'RoJi '

  • Yoon, Joongsun
    • Journal of Mechanical Science and Technology
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    • 제18권11호
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    • pp.1900-1908
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    • 2004
  • A human-friendly interactive system that is based on the harmonious symbiotic coexistence of human and robots is explored. Based on interactive technology paradigm, a robotic cane is proposed for blind or visually impaired travelers to navigate safely and quickly through obstacles and other hazards faced by blind pedestrians. Robotic aids, such as robotic canes, require cooperation between human and robots. Various methods for implementing the appropriate cooperative recognition, planning, and acting, have been investigated. The issues discussed include the interaction between humans and robots, design issues of an interactive robotic cane, and behavior arbitration methodologies for navigation planning.

경량전철 차량화재의 화염거동에 대한 연구 (A Study on the flame behaviors of light railway vehicle)

  • 목재균;김연수;이우동;허남건
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2002년도 추계학술대회 논문집(I)
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    • pp.281-289
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    • 2002
  • This paper is described for the flame behaviors in light railway cabin by numerical simulation code, which can be interpreted the design parameters in terms of suppression the fire propagation and excavation the passengers safely. The results shows that the flame intensity(fire temperature, smoke density) depends on the firing points in cabin and propagates rapidly whole cabin space rather than modern subway cabin due to smaller inner space. The data will be used to how can be get the safety case, which is described on the operating principles for all facilities and logistics against to the light railway firing accidents.

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사용후핵연료 차세대관리공정 운반취급계통 분석 (Analysis of Transportation and Handling system for Advanced spent fuel management process)

  • 홍동희;윤지섭;정재후;김영환;박병석;박기용;진재현
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.1438-1441
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    • 2003
  • The project for "Development of Advanced Spent Fuel Management Technology" has a plan of a demonstration for the Advanced Management Process in the hot cell of IMEF. The Advanced Management Process are being developed for efficient and safe management of spent fuels. For the demonstration, several devices which are used to safely transport and handle nuclear materials without scattering have been derived by analyzing the Advanced Management Process, object nuclear material and modules of process equipment and performing graphical simulation of transportation/handling by computers. For verification, powder transportation vessel and handling device have been designed and manufactured. And several tests such as transporting, grappling, rotating the vessel have been performed. Also, the design requirements of transportation/handling equipment have been analyzed based on test results and process studies. The developed design requirements in this research will be used as the design data for the Advanced Management Process.

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최소항력을 갖는 비행선의 구조 및 공력 설계 (Aerodynamic and Structural design of Low drag Airship)

  • 윤성찬;이재홍;허현우;유새롬;김두만
    • 항공우주시스템공학회지
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    • 제3권3호
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    • pp.24-31
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    • 2009
  • The Airship which uses light gases(Helium) can afford to be managed safely, and economically. In this paper, it executed Airship aerodynamic design using Theory of the Airship shape. With the change of main design factor, aerodynamic coefficients were investigated by FLUENT and the shape of the Airship which has low drag was chosen. For low drag coefficient of the Airship, the theory of traditional Airship shape was used. The structural analysis of the Airship is executed by ANSYS.

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Strategy Design to Protect Personal Information on Fake News based on Bigdata and Artificial Intelligence

  • Kang, Jangmook;Lee, Sangwon
    • International Journal of Internet, Broadcasting and Communication
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    • 제11권2호
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    • pp.59-66
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    • 2019
  • The emergence of new IT technologies and convergence industries, such as artificial intelligence, bigdata and the Internet of Things, is another chance for South Korea, which has established itself as one of the world's top IT powerhouses. On the other hand, however, privacy concerns that may arise in the process of using such technologies raise the task of harmonizing the development of new industries and the protection of personal information at the same time. In response, the government clearly presented the criteria for deidentifiable measures of personal information and the scope of use of deidentifiable information needed to ensure that bigdata can be safely utilized within the framework of the current Personal Information Protection Act. It strives to promote corporate investment and industrial development by removing them and to ensure that the protection of the people's personal information and human rights is not neglected. This study discusses the strategy of deidentifying personal information protection based on the analysis of fake news. Using the strategies derived from this study, it is assumed that deidentification information that is appropriate for deidentification measures is not personal information and can therefore be used for analysis of big data. By doing so, deidentification information can be safely utilized and managed through administrative and technical safeguards to prevent re-identification, considering the possibility of re-identification due to technology development and data growth.

신뢰성에 기반한 구조물 의사결정 방법 (Reliability - Based Decision Analysis for Structures)

  • 김이현;김동근;한서연
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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    • pp.3208-3213
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    • 2011
  • It has regarded an attempt to design and construct more safe structures as challenges such as fate. In order to operate public facilities safely, It can be taken how to improve the resistance to applied load by increasing the cross-section of structural members or by installing reinforcement. But inevitably such a way is accompanied by an increase of construction cost or maintenance cost. To make a cost-effective construction, Reliability-based decision analysis which can judge the adequacy of investment is suggested using statistical data of the load, resistance and the maintenance cost.

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