http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
근적외선 분광기술을 이용한 휴대용 감귤 당도 선과기 성능특성에 관한 연구
윤성운(Sung-un Yoon),김재열(Jae-yeol Kim),마상동(Sang-Dong Ma),김명윤(Myung-yun Kim) 한국생산제조학회 2006 한국생산제조학회지 Vol.15 No.5
The purpose of this study is to develop to portable near infrared analyzer measuring the sugar content of the fruits on a tree before harvesting ones. The portable near infrared system consists of a tungsten lamp, a coaxial optical fiber bundle and a multi-channel detector, which has 256 pixels and a concave transmission grating. Reflectance NIR spectra of orange were recorded by using a coaxial optical fiber bundle. The spectra were collected over the spectral range 400~1100㎚. Partial least squares regression(PLSR) was applied for a calibration and validation for determination of sugar contents. The multiple correlation coefficient was 0.99 and standard errors of calibration(SEC) was 0.069 brix. The calibration model predicted the sugar content for validation set with standard errors of prediction(SEP) of 0.092 brix. The sugar content in fruits was successfully quantified using the portable near infrared analyzer.
조영태(Young-tae Cho),마상동(Sang-dong Ma),이충호(Choong-ho Lee) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
This paper amis at improving the heat radiation performance of thermoelectric module(TEM) for a commercialization of high-powered LED light with using a multichip LED module. And a 10W multichip LED light was manufactured and then the radiate heat performance test of that was made by the driving of the thermoelectric module. So, it was found that about 40% in the effect of temperature reduction was confirmed if compared with the radiation heat by heat sink only.
승용차 시트 쿨링 & 히팅 모듈의 구조 타당성 검증을 위한 유동 전산모사
고가진(Jia-Chen Gao),박설현(Seul-Hyun Park),마상동(Sang-Dong Ma),김재열(Jae-Yeol Kim) 한국기계가공학회 2019 한국기계가공학회지 Vol.18 No.2
Due to the special structure of the car seat, the heating and cooling module must be installed in a limited area resulting in difficulty in regards to achieving optimal cooling and heating efficiency. In order to solve these problems, this paper establishes a new structure for heating and cooling modules, verifies the structural feasibility of the thermoelectric module for cooling and heating the seat through fluid simulations, and verifies the proper design of the mechanical components of the thermoelectric module.