• Title/Summary/Keyword: ISM: methods

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The Historical Transition of Handheld Camera (핸드헬드 카메라의 변화에 관한 소고)

  • Chin, Vitnam
    • Trans-
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    • v.6
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    • pp.79-95
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    • 2019
  • The advent of the handheld camera has dramatically transformed film production and consumption in countless ways. French director and theorist, Alexandre Astruc focuses on the development of 16mm camera and foretell film will be used as a tool to realize the personal vision of the author like other art. As proof of his claim French New Wave and Cinéma vérité create the film with handheld camera on the real location to capture new reality. Their films are distinguished itself from other films made by conventional Hollywood studios. Similarly, John Cassavetes in the United States began to focus on the handheld camera. Since then the handheld camera has become one of the popular shooting methods. Especially, handheld camera are noted for their agile movement and mobility as a way to capture various realities. However, with the advances in technology, lighter cameras and higher resolution have changed in different ways. The technology is neutral, one shooting method does not serve for one philosophy or ism. At one time, handheld shooting is now used as not only a means to capture the real world but also a tool to mimic a realistic feeling.

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Study of the information processing model in a way of product design method (제품디자인 방법에서의 정보 처리 모델 연구)

  • 조성근
    • Archives of design research
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    • v.16 no.1
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    • pp.289-296
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    • 2003
  • The thesis is a study of the information model for the information collection and systematization in the way of product design. In the past, the design was made by the designers hands, worked with the material directly, but today's product design, the material diverted to information, can be considered as it is made essentially through information collection and systematization processing. If the product design is considered the information processing, usually it means a qualitative change of the product design information, not a quantitative change of the information theory. A focus of the study is to grope for a way of changing the subject to information, dealing with when the product design intends to purposes, not the material, When a way of the product design was discussed to solve the problems rationally, in the past, if it is considered as quantitative, qualitative and organic methods and modeling as their means based on the process model, [analysis-generalization-estimation], are formal ism, the way of product design as information is that the product direction as a substance should go through the design information processing, making an alternative plan with the information model cycling to natural order. Because success or failure of the product design in the future depends on information as material.

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Evaluation of Hydrogen Storage Performance of Nanotube Materials Using Molecular Dynamics (고체수소저장용 나노튜브 소재의 분자동역학 해석 기반 성능 평가)

  • Jinwoo Park;Hyungbum Park
    • Composites Research
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    • v.37 no.1
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    • pp.32-39
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    • 2024
  • Solid-state hydrogen storage is gaining prominence as a crucial subject in advancing the hydrogen-based economy and innovating energy storage technology. This storage method shows superior characteristics in terms of safety, storage, and operational efficiency compared to existing methods such as compression and liquefied hydrogen storage. In this study, we aim to evaluate the solid hydrogen storage performance on the nanotube surface by various structural design factors. This is accomplished through molecular dynamics simulations (MD) with the aim of uncovering the underlying ism. The simulation incorporates diverse carbon nanotubes (CNTs) - encompassing various diameters, multi-walled structures (MWNT), single-walled structures (SWNT), and boron-nitrogen nanotubes (BNNT). Analyzing the storage and effective release of hydrogen under different conditions via the radial density function (RDF) revealed that a reduction in radius and the implementation of a double-wall configuration contribute to heightened solid hydrogen storage. While the hydrogen storage capacity of boron-nitrogen nanotubes falls short of that of carbon nanotubes, they notably surpass carbon nanotubes in terms of effective hydrogen storage capacity.

Review of GPS and Galileo Integrity Assurance Procedure (GPS와 Galileo의 무결성 보장 방법 조사)

  • Namkyu Woo;Gihun Nam;Heonho Choi;Jiyun Lee
    • Journal of Positioning, Navigation, and Timing
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    • v.13 no.1
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    • pp.53-61
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    • 2024
  • Global Navigation Satellite Systems are expected to meet system-defined integrity requirements when users utilize the system for safety critical applications. While the guaranteed integrity performance of GPS and Galileo is publicly available, their integrity assurance procedure and related methodology have not been released to the public in an official document format. This paper summarizes the integrity assurance procedures of Global Positioning System (GPS) and Galileo, which were utilized during their system development, through a literature survey of their integrity assurance methodology. GPS Block II assures system integrity using the following methods: continuous performance monitoring and maintenance on Space Segment (SS) and Control Segment (CS), through a cause and effect analysis of anomalies and a failure analysis. In GPS Block III, to achieve more stringent integrity performance, safety requirements are integrated into the system design and development from its starting phase to the final phase. Galileo's integrity performance is provided in the Integrity Support Message (ISM) format, as Galileo utilizes a Dual Frequency Multi Constellation (DFMC) Satellite Based Augmentation System (SBAS) and Advanced Receiver Autonomous Integrity Monitoring (ARAIM) to serve safety critical applications. The integrity performance of Galileo is ensured by using a methodology similar to GPS Block II (i.e. continuous performance monitoring and maintenance on the system). The integrity assurance procedures reviewed in this paper can be utilized for a new satellite navigation system that will be developed in the near future.

The Comparative Study between Leg Length Analysis and X-ray on Diagnosis of Pelvic Malpositions - according to Positions and Valuation Bases - (기능성 족지장단분석과 X-ray의 골반변위 진단의 비교 연구 - X-ray 촬영 자세 및 평가 기준에 따라 -)

  • Lee, Jung-Min;Koog, Gil-Ho;Choi, Bo-Mi;Jeong, Hyun-A;Hong, Seo-Young
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.5 no.2
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    • pp.169-180
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    • 2010
  • Objectives: This study was carried out to investigate the relationship of leg length analysis and X-ray finding according to positions and valuation bases on diagnosis of pelvic malpositions. Methods: Twenty-two people who get $33.09{\pm}10.73$ as average were evaluated by leg length analysis and X-ray findings. After measuring innominate measurement(IM), femur head line. distance between S2 and posterior superior iliac spine(PSIS). ilium shadow measurement(ISM), major axis of obturator foramen(MaF), minor axis of obturator foramen(MiF) and distance between off centering measurement and symphysis pubis, those were analyzed. Results: 1. In assessment of posterior rotation malposition ilium(PI), it was showed the best coincidence between leg length analysis and X-ray analyzed by 1M in supine position(11 cases, 50.5%). 2. In assessment of inflare, coincidence index between leg length analysis and X-ray were not good($4.00{\pm}3.03$ cases, $18.15{\pm}13.82%$). And leg length analysis were not sensitive. 3. On the whole, coincidence index between leg length analysis and X-ray were not good(best: 1 case, 45.5%; worst: 11 cases, 50.0%). Conclusions: Results form this investigation showed the relationship of leg length analysis and X-ray according 10 positions and valuation bases on diagnosis of pelvic malpositions. This results are expected to contribute to establish method of assessment in diagnosis of pelvic malpositions.

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