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800㎿급 발전소 복수기의 최적 운전점 및 운전방법에 대한 연구
장철호(Cheol-Ho Jang),홍은기(Eun-Kee Hong),황광원(Kwang-Won Hwang),윤린(Rin Yun) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.5
Along with the recent construction of a 800㎿ thermal power plant it is necessary to check the soundness of the current operation of the condenser, and to investigate the effects of vacuum level of it on the turbine efficiency for the power plant. In this study, the performances of the condenser and the turbine for the 800㎿ thermal power plant were tested based on the ASME PTC 6 and ASME PTC 12.2 with the variation of the vacuum level. When the condenser vacuum levels were 719.91 ㎜Hg, 724.5 ㎜Hg, and 729.6 ㎜Hg, the turbine efficiencies were 47.36%, 47.47%, and 47.55%, respectively. From the regression analysis of the present data, it was estimated that the optimal vacuum point is between 729 ㎜Hg and 731 ㎜Hg. When this optimal point is to be applied to the condenser, the profit of 5.5 billion won/year is expected based on the '09 caloric cost.
화성시 백미리 어촌체험마을사업의 고유성과관광체험이 방문객의 만족에 미치는 영향
장철호 ( Cheol Ho Jang ),장영수 ( Young Soo Jang ),이정필 ( Jung Phil Lee ) 한국수산경영학회 2014 수산경영론집 Vol.45 No.2
This study aimed to redefine the concept of fishing village tourism. In addition, it aimed to carry out detailed analyses of the influences of authenticity and non-authenticity of fishing village experience on tourist’s satisfaction as well as the influences of tourist’s experience on their satisfaction. The study evaluated responses of people who visited research target fishing villages in the East seaarea(Hwasung-si Baegmi-ri) which had been rated as successful case. The evaluation was performed to analyze how tourist satisfaction would be influenced by the authenticity of the fishing village experience program based on the authenticity theory(Wang, 1999) and the experience realms theory(Pine & Gilmore,1999). This study tried to find out realistic factors of the experience realms theory through fieldinv estigation, conducting interviews, and holding discussions. From these, the cause-and-effect structure of authenticity, tourism experience and satisfaction could be identified. The results of hypothesis tests are as follows; With respect to the relationship between authenticity and satisfaction in hypothesis I, authenticity did not have a statistically significant effect on satisfaction, whilen on-authenticity had a significant influence. As a result, the research hypothesis I that authenticity influences satisfaction was partially supported. Regarding hypothesis Ⅱ of the link between authenticity and tourism experience, a significant effect of authenticity was found in education experience, entertainment experience for Baegmi-ri village. The effect of non-authenticity was significant on deviation experience. Consequently, hypothesis Ⅱ was also partly supported. The relationship between tourism experience and satisfaction in hypothesis Ⅲ was significant in education, entertainment, and deviation experiences which lends support to hypothesis Ⅲ to some extent.
작업자 안전을 위한 영상센서 활용 인원 계수 시스템 개발
한재호(Jea-Ho Han),조윤호(Yun-Ho Cho),장철호(Cheol-Ho Jang),이주식(Ju-Sik Lee),이병철(Byeong-Cheol Lee),정종열(Jong-Yeol Jeong) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.11
인원 계수 시스템은 산업 현장 등 복잡한 구조 내에서 다양한 형태의 작업자(짐을 지고 있는 경우, 양 방향에서 오가는 경우 등)의 출입 및 재실인원 정보를 파악하기 위해 만든 안전장치이다. 본 논문에서는 이 시스템의 정확한 작동을 위해 CMOS 이미지 센서를 활용한 영상데이터 라벨링 기법, YOLO를 통한 영상AI학습 방법(Making Box), People Counting 알고리즘을 소개한다.