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손현철(Sohn Hyun-Chull),박길문(Park Gil-Moon),고현선(Go Hyun-Sun),이행남(Lee Haeng-Nam) 대한기계학회 2009 大韓機械學會論文集B Vol.33 No.4
A objective of this study is to identify the characteristics of mean velocity distribution through CFD analysis for various driven nozzle position changes. The analysis was done for different Reynolds number in entrance region of jet-pump and for several diameter ratios of driven nozzle. (1) The largest absorption energy was found at the point s=1 in condition of diameter ratio 1:3.21 and point s=0.5 in condition of diameter ratio 1:2.25. (2) The absorption energy was not related to the change of entrance velocity and the driven nozzle position having the largest absorption energy was function for cross section ratio. (3) As the position of driven nozzle moves to the downstream, the absorption energy gets weaker. Because the energy from swirl was lost at the cross section gets smaller. (4) As the position of driven nozzle moves to the downstream, the injection energy leans to the upper direction wall and as the Reynolds number increase, the lean phenomenon is more distinct. (5) The flow quantity of driven nozzle, the diameter ratio 1:3.21, was 32% higher than that of 1 : 2.25 and as the inlet velocity gets faster the efficiency decreased. And as the cross section of the driven nozzle increases.
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이상호 ( Lee Sang-ho ),고현선 ( Go Hyun-sun ),김혁주 ( Kim Hyeok-jn ) 아시아문화학술원 2017 인문사회 21 Vol.8 No.5
본 연구의 목적은 대학생의 직업세계 이해와 창업의지를 높이기 위해서 직업이해, 기업가정신, 진로준비행동 간의 영향관계에 대한 분석하였고, 기업가정신과 진로준비행동의 역할을 매개효과로 실증 분석하였다. 연구 결과, 직업이해는 기업가정신과 진로준비행동에 영향을 미치는 것을 나타났고, 기업가정신은 창업의지에 영향을 미치는 것으로 나타났다. 또한 기업가정신은 직업이해와 창업의지와의 관계에서 완전 매개역할을 하는 것으로 나타났다. 이러한 연구를 통하여 창업이 활성화될 수 있는 계기가 되고 향후 변화하는 산업에 선제적 대응할 수 있는 창의적 인재를 대학이 양성할 수 있는 창업생태계의 지원이 이루어지길 기대한다. This study investigated the importance of systematic education for the future career world and the role of the relationship between information provision in the job world to solve the enthusiasm for entrepreneurship. We examined the causal relationship between career understanding, entrepreneurial spirit, career preparedness and entrepreneurial intentions in order to study ways to increase the entrepreneurial will of college students. And to examine the role of entrepreneurship and career preparation behavior. The results of this study are summarized as follows. Job satisfaction has a positive effect on entrepreneurship and career preparation behavior, and entrepreneurship has an effect on entrepreneurship. Also, entrepreneurship is found to be a perfect mediator in relation to job understanding and willpower. In other words, career understanding has no direct effect on the will of entrepreneurship, but has an influence on entrepreneurship.
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조선대학교 기계공학프로그램의 교육목표(PEO) 평가 사례연구
최금진(Keum-jin Choi),고현선(Hyun-Sun Go),박길문(Gil-Moon Park) 한국공학교육학회 2012 공학교육연구 Vol.15 No.6
This paper has been studied to evaluate the program educational objectives (PEO) for mechanical engineering program at Chosun University. The program educational objectives were set up the educational goals with relationof college educational objectives and ability or quality of engineers after 3 years of graduation, and educated the basic competance of engineers are the equipments of high-level education enviroments, faculty and curriculum for effective engineering educations. This paper were to announce PEO to current students, to establish and to improve PEO throughout accesment and analysis of PEO evaluation. The improvement and documentation of PEO accesement system, collecton and analysis of PEO were conducted industial surveys for engineers graduated this program. The results are served as a substantial basis for setting furture educational goals, renewed PEO by the closed loop and making decision for quality of engineering education in the college of engineering. This study would be comfined measurements, analysis and achievements of PEO for graduated engineers in this program.
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대학의 진로교육과 취업의지에 대한 영향 관계와 교육기회충족의 조절효과에 관한 연구
김혁주 ( Kim Hyeok-ju ),이상호 ( Lee Sang-ho ),고현선 ( Go Hyun-sun ) 아시아문화학술원 2017 인문사회 21 Vol.8 No.5
본 연구는 진로교육을 위해 필요한 직업이해, 진로준비행동, 경력지향성, 역량강화교육과 취업의지의 영향관계를 연구하였고, 교육기회 충족여부를 조절효과 분석을 통하여 취업의지의 방향과 크기의 변화를 검증하였다. 연구 결과 직업이해, 진로준비행동, 역량강화교육은 취업의지에 정(+)의 영향관계가 나타났고, 경력지향성은 취업의지에 부(-)의 영향관계가 나타났다. 경력지향성과 취업의지에 대하여 교육기회충족은 조절효과 있는 것으로 나타났다. 이러한 진로교육을 통하여 미래의 직업세계에 대한 두려움을 해결하고, 대학생의 고용시장 진입에 기여할 수 있는 진로교육의 여건이 제공되기를 기대한다. The purpose of this study is to investigate the effects of job understanding, career preparation, career orientation, and capacity building on job commitment. In addition, we analyzed the satisfaction of college students' education opportunities by controlling effect. Through these researches, we confirmed the change of career understanding, career preparation, career orientation, capacity building training and willingness to work. The results of this study are summarized as follows. First, career understanding, career preparedness, and capacity building education showed a positive(+) influence on the will to work. However, career orientation has a negative(-) effect on the willingness to work. Second, we examined the moderating effect of satisfaction of educational opportunities. The satisfaction of educational opportunities for career orientation and willingness to work was found to be moderating.
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이행남(Haeng-Nam Lee),박길문(Gil-Moon Park),나기대(Gi-Dea Na),손현철(Hyun-Chul Sohn),고현선(Hyun-Sun Go),박지만(Ji-Man Park),설재림(Jae-Lim Sul) 한국유체기계학회 2006 유체기계 연구개발 발표회 논문집 Vol.- No.-
This study analyses flowing characteristics of ejectors whose design expense is cheap and rarely need maintenance. Ejectors are appled for various industrial fields such as waste water treatment facilities, nuclear energy plants and boiler systems because of such advantages. This study analyses flowing of fluid absorbed because of low-pressure of driving pipes and expanded pipes. For this, diameter ratios of driving pipes and expanded pipes, and Reynolds number are changed and interpreted with CFD to identify flowing characteristics such as pressure and velocity distribution.
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설재림,오정교,고현선,장현준 朝鮮大學校 機械技術硏究所 2007 機械技術硏究 Vol.10 No.1
이젝터(Ejector)의 원리는 노즐에서 높은 유속을 갖고 분출하는 유체의 운동에너지에 의하여 저에너지 유체를 흡입하는 펌프의 일종이다. 이젝터는 생산현장의 열기관이나 유체기계발전소의 대류열전달 및 공기조화 덕트시스템에는 필연적으로 관로망이 연결되며 이들 관로망의 설계는 플렌트 전체의 효율뿐만 아니라 안정성과도 밀접한 관계를 갖고 있다. An ejector IS a fluid-transportation device, which spouts high-pressure fluid from driving pipes using kinetic energy of spouted fluid and raises pressure through exchange of momentum with surrounding gases of lower pressure. It can be manufactured with a simple structure irregardless of size of system, installed and used easily at places where fluid is flowing.
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