http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Flangeless Esser PET Phantom 영상 자동 분석 프로그램의 유용성 평가
남궁창경,남기표,김경식,김정선,임기천,신상기,조시만,동경래,NamGung, Chang-Kyeong,Nam, Ki-Pyo,Kim, Kyeong-Sik,Kim, Jeong-Seon,Lim, Ki-Cheon,Shin, Sang-Ki,Cho, Shee-Man,Dong, Kyung-Rae 대한핵의학기술학회 2009 핵의학 기술 Vol.13 No.1
Purpose: ACR (American College of Radiology) offers variable parameters to PET/CT quality control by using ACR Phantom. ACR Phantom was made to evaluate parameters which are uniformity, attenuation, scatter, contrast and resolution. Manual analysis method wasn't good for the use of QC because values of parameter were changed as it may user and it takes long time to analysis. Ki-Chun Lim, a nuclear scientist in AMC, developed program that automatically analysis values of parameter by using ACR Phantom to overcome above problems. In this study, we evaluated automatic analysis program's usability, through the comparing SUV of each method, reproducibility of SUV when repeated analysis and the time required. Materials and Methods: Using Flangeless Esser PET Phantom, the ideal ratio of 4 : 1 hot cylinder and BKG but it actually showed a ratio of 3.89 to 1 hot cylinder and BKG. SIEMENS Biograph True Point 40 was used in this study. We obtained images using ACR phantom at Fusion WB PET Scan condition (2 min/bed) and 120 kV, 100 mAs CT condition. Using True X method, 3 iterations, 14 subsets, Gaussian filter, FWHM 4 mm and Zoom Factor 1.0, $168{\times}168$ image size. We obtained Max. & Min. SUV and SUV Mean values at Cylinder (8, 12, 16, 25 mm, Air, Bone, Water, BKG) by automatic program and obtained SUV by manual method. After that, we compared manual and automatic method. we estimate the time required from opened the image data to final work sheet was completed. Results: Automatic program always showed same result and same the time required. At 8, 12, 16 and 25 m cylinder, manual method showed 6.69, 3.46, 2.59, 1.24 CV values. The larger cylinder size became, the smaller CV became. In manual method, bone, air, water's CV were over 9.9 except BKG (2.32). Obtained CV of Mean SUV showed BKG was low (0.85) and bone was high (7.52). The time required was 45 second, 882 second respectably. Conclusions: As a result of difference automatic method and manual method, automatic method showed always same result, manual method showed that the smaller hot cylinders became, the lager CV became. Hot cylinders mean region size, the smaller hot cylinder size becomes we had some trouble in doing ROI poison setting. And it means increase in variation of SUV. The Study showed the time required of automatic method was shorten then manual method.
이기종 운영체계에 기반한 고성능 트랜잭션 처리 시스템의 개발
김기형,남영환,조행래 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.2
Recently, workstation clusters have been utilized for high performance transaction processing systems. In such systems, transactions are usually processed by multi-threads. Workstations in the clusters can have heterogeneous operating systems in the viewpoint of the thread processing mechanism. This paper focuses on the portability issues which should be considered from the design stage of the workstation cluster-based transaction processing systems. Especially, this paper analyzes the differences between single-threaded and multi-threaded operating systems. Based on this analysis this paper presents the architecture of a high performance transaction processing system which works on both operating systems.
방사선 조사에 의한 phospholipase D 활성화 연구
김영래,김기환,조문준,임규,황병두,박승길 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1
Activation of oleate-dependent phospholipase D (PLD) isozyme by irradiation was reported previously. However, the effects of irradiation on other PLD isotypes (PLD1 and PLD2) have not been studied. There are several kinds of PLD isozymes in a cell. Therefore, it is difficult to study PLD isotype-specific activation in a cell by irradiation. We tested which isotype of PLD responds to irradiation. We used the fibroblasts cell lines overexpressing PLDl or PLD2 by introducing recombinant PLD1 or PLD2 cDNA. Phospholipids in cells were labelled with [(3)^H] myristic acid. Before irradiation, l-butanol was added. After irradiation with doses of 1, 2, and 10 Gray, we measured the formed phosphatidylbutanol containing [(3)^H] myristic acid. The overexpressed PLD isotypes were functional in those cell lines. PLD2 activity was enhanced by irradiation when we compared the PLD activations between control and PLD1 or PLD2 overexpressing cells. However PLD1 was not activated by irradiation. PLD2 isozyme, but not PLD1, was activated by irradiation. One Gray irradiation showed the maximal effect on PLD2 activation. The activation mechanism and physiological significance of PLD2 activation by irradiation remain to be uncovered.
이상진,김기수,강영조,조승래,홍순연 東亞大學校 建設技術硏究所 2006 硏究論文集 Vol.29 No.2
문화재란 문화가치가 있는 사물로서 국가 가 종교적·세속적 근거에 따라 특별히 지정 한 재산이다. 문화재는 그것이 구현하는 정신적 가치와 시각적 음향적으로 표현하는 수단으로서 그 나라의 독특하고, 다양한 주체성을 보존하는 중요한 매체이기도 하다. 그러므로 문화재는 한나라의 민족역사와 문화로서 과거의 모습을 통해 현재 그리고 나아가 미래를 연결시키는 하나의 매개체인 것이다. 또한 문화재는 그 지역민에게 향토사적 인 자긍심 및 연대의식을 고취시키는 동시에 나아가 한 나라, 세계적인 관심사로 여겨 야 할 것이다. 원적산 봉수대는 양산군청 소재지에서 북쪽으로 약 9.2㎞, 통도사입구 마을인 신평에서 남쪽으로 8㎞지점에 있다. 이 봉수대는 경상남도 기념물 제 118호로써 원적산봉수대 보존회에 의해 복원된 문화재이다. 즉 다른 지역의 문화재와 달리 잊혀 져가는 문화재의 재생을 통해 다시 태어난 문화재인 것이다. 원적산 봉수대 주변정비 기본계획의 목적 은 지역민의 자긍심으로 복원된 봉수대와 주 변과 접근로를 체계적으로 정비를 함으로써 접근성, 전통성, 보존성을 높이고자 한다. 특히, 문화재보호를 위한 제반 법규 및 현지여건에 부합하는 정비방향을 설정하고, 전문 인력과 관련문헌을 바탕으로 문화재 주변을 역사성과 주민친화성, 기능성, 관광성을 함께 갖춘 문화공간으로서의 미래지향적 문화재정비 계획을 추구하고자 한다.
15주간의 신체 활동 증진 프로그램이 여자 대학생의 신체 조성 및 혈중 지질 농도에 미치는 영향
장지훈,성기홍,김남익,조국래,이동수 한국유산소운동과학회 2002 대한스포츠융합학회지 (jcses) Vol.6 No.1
The purpose of this study was to develop the lecture model as liberal arts which have the positive effects to promote physical activity and to decrease obesity-dated variables. Subjects in this study were women university students, and they were divided into two groups to voluntary applying; one was tennis group (n=10), the other table tennis group (n=10). Physical activity promotion program in this study was practiced one time a week, 130 min. one time with the intensity under 83% predicted HR max for 15 weeks. Anthropometrics, body fat(%), blood lipid profile were measured before and after attending the program, respectively. After 15-week-physical activity promotion program, body weight, BMI, WHR, body fat(%), total cholesterol concentration, triacylglyceride concentration were decreased significantly in both groups (p<.5). Resting heart rate was decreased significantly only in tennis group (p<.5). No significance was shown in systolic and diastolic blood pressure to both groups.
유한요소법을 이용한 레일의 헤드에 존재하는 균열의 응력확대계수에 관한 연구
인경환,성기득,김종욱,조명래,양원호 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1
In recent years, the rolling stock is being increasingly developed. However, higher axle loads have increased the incidence of fatigue defects in railroad rails. Many of these fatigue-initiated defects develop in the head of the rail. The head defects are very important because they are generally not visible until they reach quite large size and they can lead to catastrophic rail fractures. In this paper, stress intensity factors(SIF) of a embedded crack in the head of the rail were analysed along the wheel positions relative to the crack plane and along the running condition using the finite element method.
서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.