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박명환,권덕문 대구보건대학 1997 대구보건대학 論文集 Vol.17 No.-
The characteristics of photostimulation in sulfide phosphors and alkalihalide phosphors are reviewed briefly. then, the mechanism and the characteristics of photostimulated luminescence in BaFX:Eu^(2+) are summarized. The computed radiography(CR) system is mainly used for the diagnostic X-ray imaging, it has potential for applying to the other fields of ionizing radiation imaging. It was found out that the imaging plate detector is useful as a new type wide range personal dosimeter.
유무인 협업을 활용한 고가치 공중 자산의 호위 전술 개발과 M&S를 활용한 효과적인 전력배치 방안 연구
박명환,유승훈,오지현,설현주 한국군사과학기술학회 2022 한국군사과학기술학회지 Vol.25 No.4
As the role of high-value air assets(e.g., AWACS, JSTARS, Rivet Joint, E-2) becomes more critical in modern warfare, the air escort for these assets blocking attacks from any potential enemy fighter also becomes vital. Without the escort, the operations of the assets become restricted. However, such an escort is not always possible due to the limited flight time of the escort fighters. In this paper, we introduce an escort tactics for high-value air assets performed by the manned-unmanned teaming composed of a transport aircraft and UAVs(unmanned aerial vehicles). In this tactics, the transport aircraft plays the role of an aircraft carrier, which carries, launches, and retrieves the UAVs. The missions of UAVs in this tactics are to detect and engage enemy fighters. We also introduce the simulation result of this tactics to identify the UAVs' required capabilities and optimal maneuvering.
자율주행 시대의 Car Entertainment 서비스
박명환 한국방송·미디어공학회 2020 방송과 미디어 Vol.25 No.3
인공지능(AI)과 연산능력의 발전에 따라 자율주행은 가까운 미래에 완전한 모습으로 우리들 앞에 나타날 것이다. 자율주행 시대의 자동차는 단순한 이동 수단이 아니라, 이동하는 개인 집과 같이 휴식과 여가 생활을 즐길 수 있는 공간이다. 다시 말해서 자율주행으로 말미암아 차량에서 늘어난 여가 생활은 미디어 시청으로 이어지고, 이는 기존의 스마트 폰이 아닌 AR(Agument Reality)기술과 파노라마 스크린 기술 성장과 동반하여 개인 공간 천체를 이용한 몰입된 미디어 시청이 될 것이다. 본 문서는 자율주행 시대에 걸맞는 새로운 미디어 시청에 필요한 환경분석과 기술적 요구사항을 언급하고자 한다.
박명환 대구보건대학 2002 대구보건대학 論文集 Vol.22 No.-
The computed radiography system has been changed by the film-screen, and X-ray equipment has been changed by the inverter type, which is more stable than the conventional type. I compared the exposure dose, HVL(half value layer) and effective energy of the inverter type X-ray equipments by computed radiography. The X-ray quality of X-ray generator showed increase for the tube voltage. The HVL and effective energy is increased the higher tube voltage. When a radiograph was taken under the same conditions in each radiography room, dose changed according to the equipments.
朴明煥 대구보건대학 1994 대구보건대학 論文集 Vol.14 No.-
The CaSO₄:Tm-PTFE TLDs have been prepared and their energy dependences of TL intensity to X-rays have been investigated. The dose dependence of the prepared CaSO₄:Tm-PTFE TLDs is linear within the range of 10uGy-10Gy for X-rays and gamma rays. The spectral peaks of TL emission spectrum are at about 350㎜ 475㎜. The fading rate of the main peak has been found to be about 2% for 30days when CaSO₄:Tm-PTFE TLDs stored in the dark room at room temperature. The energy dependence of CaSO₄:Tm-PTFE TLD has been compensated by combining the TL responses of one bare TLD and five TLDs filtered with 10.㎜ Al, 0.2㎜ Cu, 0.5㎜ Cu, 1.5㎜ Cu, 2.0㎜ Pb respectively. The determined correction coefficients for filter combination are a_(0)=0.078, a₁=-0.009, a₂=-0.235, a₃=0.588, a₄=0.568 and a_(5)=0.180 respectively. From the results of these studies, the prepared TLD badge of six dosimeter combination may be useful as a radiation dosimeter for personal and environmental monitoring.