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TRIZ 소프트웨어 CREAX를 활용한 창의적 실습에 관한 연구
홍성도 ( Sung Do Hong ),허용정 ( Yong Jung Huh ) 한국실천공학교육학회 2011 실천공학교육논문지 Vol.3 No.2
지식정보화 시대에 있어서 전공교육과 더불어 창의적 인재를 양성하기 위한 창의적 사고 기법 향상에 관한 교육수요가 증가하고 있다. 학생들은 전공과목에 대한 중요성은 인식하고 있지만, 창의성은 선천적으로 타고나야 한다는 선입견이 크게 작용하여 창의성 계발에 별다른 노력을 기울이지 않고 있다. 반면, 기업의 경우 창의력과 응용력을 겸비한 인재를 더욱 중시하고 있다. 이러한 상황에서 러시아에서 개발된 창의적 문제해결기법인 TRIZ는 실무적 적용 가능성이 높은 기법이라고 할 수 있다. 본 연구에서 활용한 TRIZ는 실무문제를 명확히 정의하고 체계적인 분석을 통해 창의적 아이디어를 도출할 수 있는 가이드라인을 제시한다. 창의적 문제 해결 이론에서는 이론적인 내용의 숙지도 중요하지만, 실습을 통한 실무능력의 배양이 필수적으로 요구된다. 본 연구에서는 TRIZ기반 상용 소프트웨어인 CREAX를 활용하여 창의적 문제해결 실습교육을 수행한 결과를 바탕으로 학습자들의 창의적 문제 해결 능력 실습에 필요한 과정을 제안하였다. This paper proposed a model of Creative Problem Solving education, using CREAX software based on TRIZ. Learners can get the motivation about development of creative thinking through the theory of TRIZ. Furthermore, they can have good command of creative problem-solving process from the software practice course. As a result of the study, the learners could realize the importance of the creativity and adaptability which are demanded from the knowledge-based society. We planned a three major course for development about adaptability of creative problem solving process and we proposed a guideline about each step of the software utilized CREAX. So, we established the courses about leaners can get the creative problem-solving skill more efficiently.
TRIZ 소프트웨어 CREAX 를 활용한 CAD Application 의 창의적 설계
홍성도(Sung-Do Hong),허월(Weol Heo),허용정(Yong-Jeong Huh) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2
When an on-site drawing is necessary, cannot just write. - Because of the spaces and the time. Therefore, the field manager provides uncertain information to designers. At this time an issue is occurred. This study derived from Application in order to solving an issue as we used CREAK based on TRIZ. Because of this can provide quickly correct information to designers.
몇가지 채소 유묘의 초기생장과 양분함량에 미치는 바이오차 효과
홍성창 ( Hong Sung-chang ),최순군 ( Chio Soon-kun ),최동호 ( Choi Dong-ho ),허승오 ( Hur Seung-oh ),신중두 ( Shin Jung-do ),장은숙 ( Jang Eun-suk ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-
Carbon sequestration, amendment on green house gas emission, and soil remediation can enhanced by the biochar. Biochar effects on soil fertility and nutrient cycling. Crops growing on the biochar applied soil could be affected on its characteristics. There are many seeding mixes for a lot of vegetable seedling. The objective of this study was to investigate the effects of biochar contents of seeding mixes on early growing of lettuce (Lactuca sative) and red pepper (Capsicum annunm), The consist of treatments were control(0 : 1, biochar ratio to seeding mixes (w/w)), 1 : 9(10%), 3 : 7 (30%), 5 : 5 (50%), and 7 : 3 (70%), respectively. The pH of mixed substrates were increased from 5.5 (control) to 8.3 (biochar 70%) depending on biochar contents, while the EC were decreased from 2.1 (control) to 0.8 (biochar 70%). As the biochar content increased in the mixed substrate, the T-N and K content were decreased. The plant length, leaf number, and dry weight of lettuce and red pepper were in order of 50%, 30%, 10%, control, and 70%. These characteristics of lettuce and red pepper seedling showed significantly differences. Increasing content of biochar (10%, 30%, and 50%) progressively activate growing of the lettuce and red pepper but at 70% treatment growing of these were retarded. As the biochar content in the mixed substrate increased T-N, P, K, Mg, and Na content of lettuce, 30 days after sowing, were increased, but Ca content not showed differences. 80 days after sowing red pepper seedling showed different nutrient content compared to those of lettuce seedling. The content of K of red pepper seedling increased depending on the biochar content but the content of P, Ca, and Mg were decreased. On the point of view nutrient content of seeding mixes, at the 50% treatment plot, the amount of nitrogen was 80% of the control, but fresh weight of the lettuce and red pepper were most heavy. Thus, it was assumed that early growing of the lettuce and red pepper seedling were affected by the action of biochar that adsorption and holding nutrient reaction in seeding mixes. In conclusion, adding the biochar to seeding mixes was considered as an important measures for growing healthy seedling and carbon sequestration. More field experiments are needed to verify the biochar effect of crop growth over the entire growing season.
개별 블레이드 제어(IBC) 기법을 이용한 동축반전 회전익기의 진동하중 억제에 관한 연구
홍성현(Seonghyun Hong),유영현(Younghyun You),정성남(Sung Nam Jung),김도형(Do-Hyung Kim) 한국항공우주학회 2019 韓國航空宇宙學會誌 Vol.47 No.5
본 연구에서는 능동적인 블레이드 제어기법인 개별 블레이드 제어(Individual Blade Control, IBC) 기법을 적용하여 고속비행 시 동축반전 회전익기의 허브 진동하중을 억제하기 위한 최적 제어입력을 탐색하였다. 통합 공탄성 해석 프로그램인 CAMRAD II를 이용하여 동축반전 회전익기인 XH-59A를 모델링하고 다양한 IBC 입력 조건에 대하여 파라미터 연구를 수행하였다. 파라미터 조절 연구를 통하여 허브 진동억제 성능을 구한 결과, 3/rev 가진 주파수의 0.5° 진폭에 300° 위상각을 갖는 IBC 제어 입력을 적용할 경우 기준 대비 진동 수준이 최대 50% 감소하는 것을 확인하였다. 진동 억제 성능은 후류 간섭에서 보다 자유로운 상부로터에서 6% 가량 하부로터보다 크게 나타났다. 로터의 전진면에서만 IBC 입력를 가진하는 경우에는 조화 가진 입력과 동일한 입력을 가할 경우 진동 수준이 최대 17% 정도 추가적으로 감소하는 것을 확인하였다. 이러한 진동 감소는 전진면만을 대상으로 적은 에너지 투입 비용으로 달성한 특징이 있다. In this paper, an individual blade control (IBC) methodology is applied to find the best input scenario for vibratory hub loads reduction of XH-59A co-axial rotorcraft in high speed flight. A comprehensive aeromechanics analysis code CAMRAD II is employed to analyze the aircraft. A parametric study is conducted for optimum IBC inputs leading to the maximum vibration reduction. Numerical results demonstrate that up to 50% reduction in the hub vibration index is obtained for an IBC input at 3/rev frequency with the amplitude and phase angle of 0.5 deg. and 300 deg., respectively. The upper rotor exhibits as much as 6% more vibration reduction as compared to that of the lower rotor due to a clean inflow characteristic of the rotor. It is found that further vibration reduction gain is reached for IBC inputs with advancing-side only control. The hub vibration becomes reduced by up to 17% in reference to that with full rotor disk control. It is noted that the additional gain is obtained with significantly less power input with the advancing-side only control.