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조병섭 대한건축학회 1964 建築 Vol.8 No.1
최근의 화력발전은 발전기용량이 커지고 따라서 이에 따른 설비기계의 용량도 커저가고 있어 차등의 기기에서 발생하는 소음은 대단히 큰 Level로 나타나고 있다. 소내에 각종의 기기가 있고 이의 효율적 운전을 도모하여 기술원이 중앙지하실에서 수시감시하고 직접 이들 기술원에 대한 소내지령전달의 곤란이 지적되고있는 원인은 극히 높은 소음 Level 속에서의 작업은 능률및 노동위생상의 문제도 포함되고 있다고 고려되므로 우선 화력발전소의 실체를 파악하고 소음대책의 자료를 공하고저 하는바다.
자기신호처리 적외선 감지소자의 온도효과를 고려한 해석적 모델
조병섭,곽계달 대한전자공학회 1995 전자공학회논문지-A Vol.32 No.3
A theoretical self-consistent thermoelectric model has been developed for optimal thermal design in the self-signal processing infraed detectors. The model is achived by employing the coupled thermoelectric equation which allows which allows the simultaneous investigation of the termal and electrical aspects of device behavior. The thermal limitation of detectivity and responsivity are determined by the enegy gap, carrier concentration, lifetime, and mobility as a function of the temperature. The calculated results indicate that the detectivity is decreased at bias fields above about 50 V/cm, because the performence is limiting by temperature when the bias voltage reached the level associated with Joule heating. It has been also found that the improvement in the mid-band modulation transfer function(MTF) may be restricted by increasing the bias fields. Further, the important paramerers in the thermal optimization of SPIR detector, such as temperature in the device, ambipolar velocity, element thickness and length, are also considered. The analytical study provides a mathematical basis for optimal design of such a photoconductive IR detector and the agreement between the experimental and theoretical results are seen to be good.
趙昺燮,張濬浩,金榮文 전북대학교 공업기술연구소 1987 工學硏究 Vol.18 No.-
The methods to get the dynamic response of the structures with respect to the time his-tory are Direct integration method and Normal mode method. In this paper, one degree of freedom structure subjected to earthquake is analyzed within elastic range by Duhamel's integral, runge-kutta method and wilson-Ɵ method using the E1-centro NS 1940 seismic accele-ration data which had occured before. Compared with the results of three methods, they are good approximate.
조병섭,오정희 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2
The subjects of this investigation were selected 200 persons(over high school, male and female) in Seoul through cluster random sampling method. The analytic method was used by questionnaire. The findings of this study were as follows: 1. There were differences according to sex, age and education level in the preference degree of media sports. 2. There were differences according to sex, age and education level in the audience amount of media sorts. 3. Media sports looking and listening motives were appeared in the order of amusement, information learning, escaping from reality, killing time. 4. There were differences according to sex and age in the viewing satisfaction degree of media sports. 5. There were significant differences according to sex, education level and income level in the image of enterprises. 6. There were significant differences according to sex and age in the degree of game inspection. 7. There was a certain difference between male and female in an audience amount depending on sporting events, but were differences according to age, education level and income level. 8. There was an affirmative correlation generally among a viewing act of media sports, images of sponsor enterprises, the degree of game inspection, excluding the audience amount of TV sports programs.