• Title/Summary/Keyword: FIMS

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A Far-UV Study in Taurus-Auriga-Perseus(TPA) Complex

  • Lim, Tae-Ho;Min, Kyung-Wook;Seon, Kwang-Il
    • The Bulletin of The Korean Astronomical Society
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    • v.37 no.1
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    • pp.80.2-80.2
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    • 2012
  • We firstly present the unified Far-UV continuum map of the Taurus-Auriga-Perseus (TPA) complex, one of the largest local associations of dark cloud located in (l, b)=([152,180], [-28, 0]), by merging both FIMS and GALEX. The FUV continuum map shows that dust extinction correlate well with the FUV around the complex. It says strong absorption in the dense Taurus cloud and Auriga cloud. Although the column density of Perseus and California cloud is similar to Taurus' and Auriga's, Perseus and California cloud do not show strong absorption in FUV because they are more distant than Taurus and Auriga cloud. We also present the dust scattering simulation based on Monte Carlo Radiative Transfer technique. Through the result of Monte-Carlo dust scattering simulation and comparing the result with FIMS-GALEX unified map we gain deeper understanding related to the spatial dust distribution of TPA region. As a preliminary result of the simulation we present the most probable front face, thickness, albedo, and asymmetry factor in this region, respectively. Through this work we can show a certain inclination of the spatial dust distribution. During this study we have developed the FUV dust scattering simulation code using Monte-Carlo method. We expect that it will be generally used to simulate dust scattering in the Galaxy.

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Bright stars observed by FIMS/SPEAR

  • Jo, Young-Soo;Seon, Kwang-Il;Min, Kyoung-Wook;Choi, Yeon-Ju;Lim, Tae-Ho;Lim, Yeo-Myeong;Edelstein, Jerry;Han, Wonyong
    • The Bulletin of The Korean Astronomical Society
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    • v.41 no.1
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    • pp.44.1-44.1
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    • 2016
  • In this paper, we present a catalogue of the spectra of bright stars observed during the sky survey using the Far-Ultraviolet Imaging Spectrograph (FIMS), which was designed primarily to observe diffuse emissions. By carefully eliminating the contamination from the diffuse background, we obtain the spectra of 70 bright stars observed for the first time with a spectral resolution of $2-3{\AA}$ over the wavelength of $1370-1710{\AA}$. The far-ultraviolet spectra of an additional 139 stars are also extracted with a better spectral resolution and/or higher reliability than those of the previous observations. The stellar spectral type of the stars presented in the catalogue spans from O9 to A3. The method of spectral extraction of the bright stars is validated by comparing the spectra of 323 stars with those of the International Ultraviolet Explorer (IUE) observations.

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Dust Scattering Simulation in Taurus-Auriga-Perseus(TPA) Complex

  • Lim, Tae-Ho;Seon, Kwang-Il;Min, Kyung-Wook
    • The Bulletin of The Korean Astronomical Society
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    • v.36 no.1
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    • pp.88.1-88.1
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    • 2011
  • We present the FIMS/SPEAR FUV continuum map of The Taurus - Auriga - Perseus (TPA) complex, which is one of the largest local association of dark clouds located in (l,b)~([152,180],[-28,0]). We also present the result of FUV dust scattering simulation, which is based on Monte Carlo Radiative Transfer(MCRT) technique. Before the simulation we generate the model cloud using Hipparcos 77834 stars and the calculation of their E(B-V). From the density-integrated image and the cross section image of the modeled cloud we confirmed that the Taurus cloud is located in ~130pc. The cloud north of the California nebula is known for its two layered structure and we confirm that using the cross section image of the modeled cloud. In our modeled cloud, that two clouds are located at ~130pc and at ~300pc, respectively. Over the whole region the result image of simulation is well correlated with the diffuse FUV observed with FIMS/SPEAR. The dense core of the Taurus cloud, however, is not revealed completely in the map.

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User Interface Satisfaction of the Air Traffic Control System (항공교통관제시스템에 대한 사용자 인터페이스 만족도 조사)

  • Song, Chang-Sun;Sohn, Young-Woo;Kwon, Hyuk-Jin
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.22 no.4
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    • pp.1-7
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    • 2014
  • The purpose of study is to investigate the current user interface level of air traffic control system with the usability analysis and satisfaction survey questionnaire on user satisfaction. Think aloud protocol is used to identify not only task analysis, but also the level of user-friendliness of the FIMS and ASDE system, and the user interface questionnaires was conducted by QUIS. We collected data from 6 controllers for Think aloud protocol and 15 controllers for QUIS in Incheon airport. The results showed that the system was the valuable tool for ensuring human performance with the support of memory and the facilitation of decision-making tasks. It helps air traffic controllers perform better and minimize errors in a congested time. The human-computer interface system design, however, was not applied, which led to the increase of workload. Air traffic controller participation in software development provided excellent examples for applications in terms of software in FIMS. Based on these results, the study provided that the usability of system interface was necessary to take into account human factors. The development and design of system was discussed in User Interface environment.

A guideline for freeway incident management manual (고속도로 돌발상황관리 매뉴얼 작성지침 개발)

  • Baek Seung-Kirl;Oh Chang-Seok;Kang Jeong-Gyu;Nam Doo-Hee
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.4 no.3 s.8
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    • pp.61-72
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    • 2005
  • This paper is designed to report the results of response manual development in relation to the freeway Incident Management System(FIMS) development as part of Intelligent Transportation Systems Research and Development program. The central core of the FIMS is an integration of the component parts and the modular, but integrated system for freeway management. The whole approach has been component-orientated, with a secondary emphasis being placed on the traffic characteristics at the sites. The first task taken during the process was the selection of the required actions for each step within the Incident Management System. After through review and analysis of existing incident response procedures and manuals, the incident response manual led to the utilization of different technologies and actions in relation to the specific needs and character of the incidents. FIMS also provides Integrated Incident Management according to the verified incident information provided by the each components The deployment of containment and mitigation strategies for incidents will be automatic or manual depending on the configuration of the system. It is anticipated that, over a period of time, operators will be able to response the incident using integrated and organized Procedures and action items.

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MANUFACTURING AND TEST RESULTS OF OFF-AXIS PARABOLIC CYLINDER MIRROR FOR FIMS (FIMS에 사용되는 비축 포물 원통형 반사경의 제작과 성능 시험 결과)

  • Ryu, K.-S.;Yuk, I. S.;Seon, K.-I.;Lee, Y.-W.;Nam, U.-W.;Shin, J.-H.;Hong, S.-J.;Lee, D.-H.;Jin, H.;Oh, S.-H;Rhee, J.-G.;Min, K.-W.;Han, W.;Park, J.-H.;Edelstein, J.;Korpela, E. J.
    • Journal of Astronomy and Space Sciences
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    • v.18 no.3
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    • pp.239-248
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    • 2001
  • Far-ultraviolet IMaging Spectrograph (FIMS) is the main payload of the first Korean scientific satellite, KAISTSAT-4, which will be launched in 2002. Among the optical parts, parabolic cylinder mirror does not have any heritage from previous astronomical missions, so the manufacturing and testing process itself is a challenging issue. We describe the method of manufacturing and measuring of the off-axis parabolic cylinder mirror and our initial experiments to establish the entire manufacturing process. Using the method, the profile error can meet the specification of $lambda$ per cm which is closely related with the astronomical performances. In case of the surface roughness, temperature controlled pitch polishing reduces $R_{q}$ under 1 nm implying that scattering in the entire spectral range of FIMS is less than 2% of the incident UV light.

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On the Mechanical Structure of the FIMS

  • Yuk I. S.;Ryu K. S.;Park J. H.;Seon K. I.;Nam U.-W.;Han W.;Seon J.;Min K.W.;Korpela E. J.;Edelstein J.
    • The Bulletin of The Korean Astronomical Society
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    • v.25 no.2
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    • pp.76-76
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    • 2000
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