RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 원문제공처
          펼치기
        • 등재정보
          펼치기
        • 학술지명
          펼치기
        • 주제분류
          펼치기
        • 발행연도
          펼치기
        • 작성언어
        • 저자
          펼치기

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • 방사선 치료 환자의 자세 및 Device에 따른 RPM 신호 분석을 통한 호흡 안정성의 통계적 고찰

        박명환,서정민,최병기,신은혁,송기원,Park, Myung-Hwan,Seo, Jeong-Min,Choi, Byeong-Gi,Shin, Eun-Hyeok,Song, Gi-Won 대한방사선치료학회 2011 대한방사선치료학회지 Vol.23 No.2

        목 적: 일정한 호흡주기의 유지가 필요한 방사선치료에서 치료 자세와 device의 사용에 따른 호흡주기의 차이를 통계적으로 분석하여, 그 경향과 device의 유용성에 관하여 알아보고자 한다. 대상 및 방법: 피험자 11명을 대상으로 바로 누운 자세와 엎드린 자세에서 각 20분씩 호흡주기를 유지한 호흡신호를 획득 및 분석하였다. 엎드린 자세에서 호흡주기의 유지가 양호하지 못한 7명에게 belly board를 사용한 후 호흡신호를 획득하여 device의 사용전후의 호흡변화와 안정성을 분석하였다(통계 분석에는 PASW 18.0을 이용). 결 과: 피험자의 특성에 따른 차이는 없었으며 자세에 따른 호흡주기유지 안정성은 바로 누운 자세 54.5%, 엎드린 자세 36.4%로 나타났다. Belly board를 사용한 7명 중 4명은 호흡주기유지 안정성이 유의하게 양호한 변화를 보였으며, 허리치수에 따라 바로 누운 자세에서 처음 10분간의 호흡주기유지에는 유의한 차이(P=0.022, Fisher's Exact Test)를 보였다. 시간의 흐름에 따른 호흡의 안정성은 7명(63%)이 엎드린 자세보다 바로 누운 자세에서 보다 안정적이었다. 결 론: 흉부 및 복부 심지어 골반의 방사선치료에서도 호흡에 의한 환자의 움직임은 중요한 고려사항 중 하나이다. 본 연구와 같이 호흡신호의 통계적 분석과 이의 적용을 통해 호흡유지에 최적의 자세, belly board와 같은 device 사용여부를 결정하면 호흡주기의 유지 및 호흡의 안정도 유지에 기여할 수 있을 것으로 사료된다. Purpose: This study statistically analyzed the difference of the stability of maintaining a respiratory period shown according to position and use of a device to search the tendency and usefulness of a device. Materials and Methods: The study obtained respiratory signals which maintained a respiratory period for 20 minutes each supine and prone position for 11 subjects. The study obtained respiratory signals in a state of using a belly board for 7 patients in a bad condition of a respiratory period in a prone position to analyze a change in respiration and the stability before and after the use of a device. Results: The supine part showed 54.5%, better than the prone part of 36.4% in a case that the stability for maintaining a respiratory period was in a good condition as a fixed respiratory period was well maintained according to the position. 6 patients (85%) showed a maintenance pattern of a respiratory period significantly different before the use and 4 patients showed a significantly good change in the stability for maintaining a respiratory period as a result that belly boards were used for 7 patients that the maintenance of a respiratory period was not in a good condition on a prone position. Conclusion: It seemed that this study could contribute to the maintenance of respiratory period and of respiratory stability as the optimal position for maintenance of respiration and the use of a device such as a belly board were decided through statistic analysis of respiratory signals and its application even if patient position and use of device were decided by the beam arrangement a treatment part of a patient, location of a target, and an expected plan.

      • KCI등재

        UML Sequence Diagram을 활용한 공대공 교전 전술 명세

        박명환,오지현,김천영,설현주 한국군사과학기술학회 2021 한국군사과학기술학회지 Vol.24 No.6

        Air force air-to-air combat tactics are occurring at a high speed in three-dimensional space. The specification of the tactics requires dealing with a quite amount of information, which makes it a challenge to accurately describe the maneuvering procedure of the tactics. The specification of air-to-air tactics using natural languages is not suitable because of the intrinsic ambiguity of natural languages. Therefore, this paper proposes an approach of using UML Sequence Diagram to describe air-to-air combat tactics. Since the current Sequence Diagram notation is not sufficient to express all aspects of the tactics, we extend the syntax of the Sequence Diagram to accommodate the required features of air-to-air combat tactics. We evaluate the applicability of the extended Sequence Diagram to air-to-air combat tactics using a case example, that is the manned-unmanned teaming combat tactic. The result shows that Sequence Diagram specification is more advantageous than natural language specification in terms of readability, conciseness, and accuracy. However, the expressiveness of the Sequence Diagram is evaluated to be less powerful than natural language, requiring further study to address this issue.

      • TLD素子의 特性과 에너지 依存性의 補償

        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.

      • 휘진성형광체를 이용한 개인피폭선량 측정에 관한 검토

        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.

      • Glow 곡선 Fitting에 의한 TLD의 포획매개변수 결정

        박명환,김성환 대구보건대학 1998 대구보건대학 論文集 Vol.18 No.-

        Highly sensitive CaSO₄:Tm TLD are fabricated and their trap parameters are determined. The glow curve of CaSO₄:Tm consists of three glow peaks and these peaks are isolated by the thermal bleaching method. The isolated glow peaks are fitted by a least squares method. The activation energies are 0.68, 0.82 and 1.03 eV. The frequency factors are 8.09×10^(6), 9.14×10^(8) and 1.03×10^(9)/s, and the kinetic orders are 1.37, 1.54 and 1.68, respectively. The optimun temperature range of the main peak for radiation dosimetry is 220~290℃.

      • 診斷用 X線 發生裝置의 整流方式에 따른 性能 比較

        朴明煥,權德文,朴鍾三,李準逸 대구보건대학 1995 대구보건대학 論文集 Vol.15 No.-

        Inverter generators are now on the way for further development to eliminate single phase generators and three phase generators. We compared inverter type X-ray apparatus with conventional single phase 2 peak and three phase 12 peak apparatus in the following aspects X-ray output to tube voltage, linearity of X-ray output to mA and exposure time, transmission dose in various thickness of aluminium absorber with different kVp. The output, linearity of inverter type and three phase 12 peak showed increase as compared against of single phase 2 peak X-ray generator. The transmitted doses of inverter type and three phase 12 peak X-ray generators were more increased than single phase 2 peak X-ray generator.

      • CaSO₄:Tb TLD의 제작과 특성

        박명환 대구보건대학 2000 대구보건대학 論文集 Vol.20 No.-

        In this study, the highly sensitive CaSO₄:Tb glass capsule type TLDs are fabricated and their trap parameters are determined. The optimum conditions of fabricating of CaSO₄:Tb phosphor was obtained to be in impurity concentration of Tb 1.0 mol% and sintering of 600 ℃, 2 hr. The glow curve of CaSO₄:Tb consists of three glow peaks and these peaks are isolated by thermal bleaching method. Activation energy of the three glow peaks measured by the initial rise, the peak shape and the heating rate method are 0.70, 0.87, and 1.03 eV. The frequency factors are 1.76 × 10^(9) , l.74×10^(9), and 9.77×10^(8) s^(-1), and the kinetic orders are 1.12. 1.46. and 1.34. respectively. The isolated glow peaks are fitted by least square method and optimum temperature range of the main peak for radiation dosimetry is 230~295 ℃.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼