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송한복 空軍士官學校 1994 論文集 Vol.34 No.-
An important point of the strategy of problem solving is maintaining two 'I's. One is to control the situation and the other is to seek keys to the problem. The objective of the strategy of reconstruction problem-situation is to transform the problem-situation into semi-solved-problem-situation. In the elements of the strategy, there are changes of representation, reconstruction of the problem, analysis of the problem, contrived forgetting of the situation, and marking a chronical detour.
송한복,양재교,성기훈,서동문,강두홍,좌용호,Song, Han-Bok,Yang, Jae-Kyo,Seong, Ki-Hun,Seo, Dong-Moon,Kang, Du-Hong,Choa, Yong-Ho 한국결정성장학회 2007 한국결정성장학회지 Vol.17 No.5
극청정 가스필터용 다공성 멤브레인을 제조하기 위해 금속산화물 분말의 in-situ한 환원/소결 공정을 이용하였다. 또한 기공도의 향상을 위해 solid pore forming agent로써 구형의 폴리머 입자를 첨가하여 금속 섬유를 사용한 멤브레인과 비슷한 52%의 기공도를 가지는 니켈 멤브레인을 제조하였다. 제조된 니켈 멤브레인은 폴리머의 첨가에 따라 평균기공크기와 기공도가 증가하였다. 한편 환원/소결 온도가 $800^{\circ}C$에서 $1000^{\circ}C$로 상승함에 따라 평균기공크기와 기공도는 감소하였다. 이는 환원/소결 온도가 상승함에 따라 격자확산 및 입계확산이 진행되어 멤브레인의 수축률 증가를 일으켰기 때문이다. Porous nickel membrane far high precision gas filter was prepared by in-situ reduced/sintered process of NiO with an addition of polymer(PMMA; polymethyl methacrylate). It showed that the porosity of Ni membrane was approximately 52%. It is similar to metal membrane which prepared using metal fiber as raw materials. The average pore diameter and porosity of Ni membrane increased as content of added polymer and decreased as elevating reduced/sintered temperature from $800^{\circ}C$ to $1000^{\circ}C$. Increase of porosity at $800^{\circ}C$ was associated with surface diffusion mechanism that leads to initial sintering, while decrease of porosity at $1000^{\circ}C$ was associated with lattice diffusion and grain boundary diffusion.
"공사 생도들의 학업성취와 정의적 특성, 학습환경과의 관계에 관한 연구"
송한복,강성춘 空軍士官學校 1997 論文集 Vol.39 No.-
This study attempts to identify the factors related to academic achievement of KAFA cadets. In assuming that learning activity is a function of individual characteristics and environments, this study focuses on learner's affective factors and learrung environment factors. Specifically, this study investigates the relation of such factors as learning motive, learning habits, test anxiety and learning environments to academic achievement. The data for analysis were collected from 418 Korea Airforce Academy Cadets by questionnaire. The data collected were analyzed with SPSSPC+
송한복 空軍士官學校 1997 論文集 Vol.39 No.-
One of the most important parts of corporate finance is capital budgeting. And the core of the capital budgeting is project evaluation. In order to understand the project evaluation we must know the interrelation between cash flows from project and the discounting rate which is used to discount the cash flows. Here, the issue is interest paid on debt. In most of the text books it is explained that interest paid on debt should not be considered cash flows for capital budgeting purposes is because when we discount the cash flows at the weighted average cost of capital we are implicitly assuming that the prefect will return the expected payments to creditors and the expected dividends to shareholders.