http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 주광태 (검색결과 51 건)
- 무료
- 기관 내 무료
- 유료
-
-
주광태 김천대학교 1989 김천대학교 논문집 Vol.10 No.-
「TheResolving power and the Differential Density according to Radivgraphic Density」 For knowlege variouse relationship of changing density according to the tube vol tage, the intensifying screen type, the range of film density and the illumination of viewer, the film exposed by placed of the resolving power chart and of the differential thickness plate(7mmAI) on the aluminium plate(l0m~ thickness). The result obtained differential density according to each radiography, it is as follows; 1. The differential density of radiography on each step of same material increased with using to intensifying screen and low tube voltage, but it decreased after saturation as rised with radiographic density. 2. When is not using to intensifying screen, the resolving power increased after saturation as rise with radiographic density. 3. The resolving power by illumination of viewer is not almost change to low density, but it is some increasing to optimum density high density.
-
주광태 김천대학교 1988 김천대학교 논문집 Vol.9 No.-
The successfull image of any radiography must not influence on the film by radiation scatter. In case of reached the film to scatter will be reduced film contrast and sharpness. For find out the differential dentisty of flim by the scatter is experimented suca as : the lead foil of various thickness is contacted behind the film cassette, used to non-screen and itensifying screen, varience of radiation field size. The results can be summarized as following; 1. The difference of radiographic density is increased with X-ray tube voltage up, larger the radiation field size and larger the intensifying factor. 2. In case of positioned shield material behind film cassette, difference of film density is changed some and it was more increase when is used fluorescent intensifying screen. 3. When is larger the differential film density by the back scatter shall be increased thickness of shield behind back scatter.
-
朱光泰 김천대학교 1986 김천대학교 논문집 Vol.7 No.-
Successfull interpretation of any radiography relies upon adequate film density detectable of defect and desease. When is the inadequate film den-sity must be change the exposure condition to the successful interpretation. change of the exposure dose can be varied as follow methods from characteric curves made under actual radiographic conditions; 1)In the case of the differential film type and the identical film type on the characteristic curve, for increase(or decrease) to the raiographic density is obtained differential value between the loy relative exposure versus defferential density. And, multiplied(or devided) from the defferential value of relative exposure. In this case for increase is multiplied, and decrease is devided. 2)To obtain same density in the two films of differential characteristic curve is multiplied(or devided) original expo-sure dose(“R”) is multiplied(or devided) original exposure dose to the exposure dose according to differential density and differential sensitivity.
-
朱光泰 김천대학교 1985 김천대학교 논문집 Vol.6 No.-
The usefulness of any radiography is measured by its impact on the human eye to the defference of the radiographic density and frequency. Successful interpretation of any radiograph relies upon subject contrast and film contrast. Relations among the each factors various made up contrast is connected complexity to directry and indirectry or in part and the great part. About relationship among the each factors concerned to contrast, the result of methe-matical equation is expressed as follows: ···· Where, =Contrast as the defferential density =Radiation quality factor consider to film sensitivity =-value of film characteristic curve =Corrective factor concerned to source size and geometrical condition. =Differential thickness n=Ratio of the intensity of scatter reach the film to the transmited density. Also, the differential density varies accordance with brightness of illuminator in relation to degree of radiographic density. And the differential density apparent eye is expressed as follows: where are ratio of outside light to the light transmitted through the radiograph.
-
주광태,신진성,김동언,송정호,주승환,장홍근 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.5
국내 감마선투과검사용 조사장치는 1,000여대로 2,500여명의 종사자가 대부분 수동으로 원격 조작하는 실정으로 작업의 효율화와 방사선피폭 저감화를 위하여 자동 원격조작기의 사용이 요구된다. 이에 연구팀은 실무에 적합한 토크와 안전계수로부터 54kgf·㎝의 출력을 지닌 24V, 200W의 BLDC모터를 이용하여 0.4∼1.2 m/s 범위의 선원 이동속도를 조절할 수 있는 구동장치와 RF 센서로 구동 속도 조절, 광전센서에 의한 선원 위치 및 timer로 노출시간을 제어할 수 있는 무선 원격조작기를 개발하였다. 이와 같이 개발한 자동원격조작기는 AC와 DC 겸용, 그리고 기존의 수동 원격조작기에 탈착이 가능하여 자동과 수동을 겸용할 수 있는 경제적 이점 등으로 활용도가 클 것으로 기대된다. Recently, gamma radiographic equipments have been used about 1,000 sets manually and operated by about 2,500 persons in Korea. In order for a radiography to work effectively with avoiding any hazard of the high level radiation from the source, many field workers have expected developing a wireless automatic remote exposure controller. The KITCO research team has developed an automatic remote exposure controller that can regulate the speed of 0.4∼1.2 m/s by BLDC motor of 24V 200W which has output of 54 kgf·㎝, suitable torque and safety factor for the work. And the developed automatic remote exposure controller can control rpm of motor, pigtail position by photo-sensor and exposure time by timer to RF sensor. Thus, the developed equipment is expected that the unit can be used in many practical applications with benefits in economical advantage to combine the use of both automatic and manual type because attachment is possible existent manual remote exposure controller, AC and DC combined use.
-
주광태 김천대학교 1990 김천대학교 논문집 Vol.11 No.-
The radiographic evaluation is done up to date mostly by sense of sight and perception. Because the subjective evaluation by in-terpreter, it is necessary that interpreter must be analysis radio-graphic image in order to the objective and the quantity. The characteristics of physical evaluation are as follow; 1 ROC curve is obtainable to sensitivity, speciainess and max-imum inpormation of the radiographic quality by the ROC analysis. 2 Because fog of the image appea on the all system, MTF can be known resolving power of the image. 3 Wiener spectrum can be known degree of accuracy in the re-gion of spatial frequency or each mottle of film graininess. 4 Entropy can be evaluation to the RMS granularity and the radiographic contrast. But more important than above, evaluation of the radiography is required hard study with the stage of artificial intelligence and in order to unification physical factor with perception.
-
-
-
RISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
