굴참나무 판재와 원판의 천연건조와 열기건조

강호양,김수원 한국목재공학회 2004 목재공학 Vol.32 No.1

참나무는 소나무와 함께 우리나라의 대표적 수종이나 아름다운 목리에도 불구하고 건조가 어려워 다양하게 사용되지 못하였다. 본 연구를 통해 굴참나무 판재와 원판의 효율적 건조방법을 찾고자 노력하였다. 먼저 마구리 도포제 효과를 조사한 결과 4가지 마구리 도포제 중 PVAc 접착제를 두껍게 도포한 것이 가장 좋은 효과를 나타냈다. 천연건조속도는 1.2%MC/일로 미농무성(USDA)의 안전건조속도(safe drying rate) 1-3%MC/일을 초과하지 않았다. 본 연구에 사용된 USDA의 참나무 열기건조 스케쥴은 천연건조된 국산굴참나무재를 내부 할열없이 함수율 8%까지 건조하는데 효과적이었다. pallet형 잔목을 사용하여 참나무 원판의 V-크랙을 막고자 하였으나 성공하지 못했다. 그러나 일반 잔목 건조에 비해 V-크랙의 갈라진 면이 깨끗했으며 다른 할열은 거의 발생하지 않았다. Oak is one of major species in this country as well as pine, but has been less utilized because of its refractory properties. The purpose of this study is to develope an effective method for drying the boards and disks of Quercus variabilis. Among four end-coaters used in this study thick coating with polyvinyl acetate chrolide glue(PVAc) was proved as the most effective. The average air-drying rate of boards was 1.2%MC/day, which did not exceed the safe drying rate recommended by United States Department of Agriculture(USDA). The kiln drying schedule used in this study gave a good result in drying the air-dried boards to 8%MC without any internal checks. An attempt to prevent oak disks from V-cracking during air-drying using special pallet-type stickers was not successful.

낙엽송 열기건조재의 수지삼출예방을 위한 처리기술

강호양,김수원 충남대학교 농업과학연구소 2004 농업과학연구 Vol.31 No.1

This study was carried out for deresinning the larch boards dried in a conventional kiln. Prior to heat treatment they were steamed in an autoclave for 5 hours or frozen for 24 hours at a temperature of -35℃. The velocities of ultrasound transmitted through the specimens were measured to examine the correlation with their resin contents. It was found that the specimens heated at 100℃ for 5 hours contained less resin that those heated at 200℃ for an hour. Both treatments of steaming and freezing were effective for deresinning and the former was better than the latter. The ultrasonic velocities measured before the heat treatment showed a negative correlation to the resin contents of the specimens, but those measured after the heat treatment a positive correlation. This difference may be attributed to the viscosity of resin.

초·중학교 육상선수의 참여형태에 따른 참여동기와 만족도

강양구,오수일 江原大學校附設體育科學硏究所 2004 江原大學校附設體育科學硏究所論文集 Vol.- No.27

The purpose of this study was to provide hilpful basic data for P.E. teachers making efforts to find and cultivate players and personnel concerned contributing to operating a track&field contest and developing programs by examining. Participation motive and satisfaction by track players' Participation type in elementary and middel school. A questionnaire survey was conducted with subjects of 444 persons in total 17 groups. 5 point Likert scale was used for the survey. Collected materials was calculated with standard deviation and average by sex, school grade and Participation type. Also t-test was applied to analyse the result. The results of the study are as follow: First of all, women were higer than men in Participation motive by whole sex based on questions related to health and sociality. Second, respondents of middle school showed higher Participation motive than those of elementary school by school grade based on questions related to relationships and performance ability. Third, long-term continuous Participants were higher than short-term Participants in Participation motive by Participation type based on questions related to health, achievement feelings and positive consideration, but that was contrary in questions related to performance ability. Fourth, men were higher than women in the degree of satisfaction based on questions concerned with interest, pride, health, professional intellect, facilities and place and teaching skill by whole sex. Fifth, middle school was higher than elementary school in the degree of satisfaction by school grade based on questions concerned with health, facilities and place. Lastly, long-term continuous Participants were higher than short-term Participants in the degree of satisfaction by Participation type based on questions concerned with health, interest, pride and specialized knowledge.

계측위치와 자유면 방향에 따른 지반진동 특성 연구

강추원,양해승,이수연 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2

The free face is an important part in the blasting design and plan. Most of study on the free face is referred to concern with fragmentation volume and determination of charge per delay. But the characteristic of vibration for the direction of the free face short of studies. This study shows the difference and characteristics of the vibration velocity for the measuring point and the direction of the free face. At the velocity of vibration, the back of the free face is over the front (Probably 1.20~1.29 times). A nomogram was made in relation to the maximum charge weight per delay on the basis of the 95% vibration blast equation and the velocity of vibration allowance set 5㎜/sec. Scaled distance was 29.71㎏/m^(1/2), 39.63㎏/m^(1/3) on the front of the free face and 34.03㎏/m^(1/2), 45.20m/㎏^(1/3) on the back of the free face.

BPNN을 이용한 3차원 지형복원 : 평탄지형 및 산악지형의 비교 A Comparison between mountainous topography and Flatness

강석훈,양황규,김수선 동서대학교 부설 연구소 1996 연구소 논문집 Vol.1 No.-

본 논문에서는 프랙탈과 신경망을 이용하여 등고선 정보로부터 3차원 지형을 복원하는 알고리즘을 바탕으로 여러지형의 경우에 대해 실험결과를 보인다. 지형의 특징을 좀 더 사실적으로 반영할 수 있는 더 많은 조건을 부여한 데이타를 기존의 특징 데이타에 부가하여 학습한다. 학습 결과 평균오차가 줄어든 학습 패턴을 이용하여 산악지형과 평탄지형에 대하여 실험하고 실험 결과 산악지형에 대한 적용이 더 효과적임을 보인다. We show the results of experimtnts based on a algorithm which can reconstruct the better 3-D mountainous shapes from contour lines data using the fractals and the Backpropagation Neural Networks(BPNN). We have learned the feature data in addition to reflect the characteristics of complicated topography, and have experimented on mountainous and flatness topography using the proposed learning pattern by the reduced average error. The results of experiments show that the mountainous topography is better than that of flatness on the similarity and the visuality.

무수초산 및 포름알데하이드 기상처리 산벚나무의 야외폭로 및 촉진열화

강호양,김수원,박상진 한국목재공학회 2003 목재공학 Vol.31 No.5

고목재의 치수안정성을 향상시키는 무수초산과 포름알데하이드 기상처리가 팔만대장경 경판의 주요 소재인 산벚나무의 중량, 흡습성, 그리고 재색에 미치는 효과를 야외폭로와 촉진열화시험을 통해 측정하였다. 무수초산과 포름알데하이드 72시간 기상처리에 의한 시편의 중량은 각각 평균 8.1과 15.7% 증가하였다. 두 달 이상 야외폭로된 아세틸화 시편의 중량은 1.5% 밖에 감소하지 않았으나 포름알데하이드 시편은 매우 많이 감소하였다. 또 아세틸화 처리는 시편의 흡습성을 낮추었으며 자외선에 의한 갈변을 방지하였으나, 포름알데하이드 처리는 그렇지 못하였다. 한편 포름알데하이드 처리시간이 긴 시편일수록 할열과 변형이 더 많이 발생하였다. 따라서 포름알데하이드 처리는 고목재 보존방법으로 맞지 않으나, 아세틸화 기상처리는 액상처리와 같이 중량을 과도하게 증가시키지 않으면서도 자외선과 비로 인한 재색변화와 중량감소를 막아줌으로 고목재의 보존처리에 적합하다고 할 수 있다. Small cherry specimens modified with acetic anhydride and formaldehyde vapor phase were weathered by outdoor exposure and accelerated conditioning in a climate chamber. The effects of the chemical modification were evaluated by measuring their weight percentage gains (WPG), hygroscopicity and color differences before and after weathering. The average WPGs of the 72 hour acetylated and formaldehyde-treated specimens were 8.1 and 15.7%, respectively. After outdoor exposure for more than 2 months, the acetylated specimens lost weights by only 1.5%, but the formaldehyde-treated did much more than the formers. It was revealed that acetylation reduced the hygroscopicity and discoloration of wood while formaldehyde treatment didn't. Moreover the longer is the formaldehyde treatment time the more degraded after weathering. It was concluded that the vapor-phase acetylation could be applied for improving the dimensional stability of old wooden blocks.

胃疾患의 食餌療法

강미경,김미숙,김선숙,김수향,양이선 효성여자대학교 가정대학 학도호국단 1987 家政大論集 Vol.6 No.-

The circumstance being surrounded with a rapidly changing society causes us to build up manystresses during our modern life. For this reason, there is increasing the occurrence of gastroentericdisorder in frequency. The dietary treatment of gastroenteric disorder requires to prepare the program necessary fora meal's amount quality and cookery with careful attention. In addition, it is essential for gastroentericpatients to fully supplement the needed nutritive substance depending on the degree of the trouble,by controling their mealtimes. Consequently, the successful dietary treatment entirely depends uponthe close cooperation between the patient involving his family and doctors and dietitians becausethe patient has to observe the standard of the programed dietary treatment. And it also is very impor-tant that the person who prepares table for these patients, attempts to improve their appetite, bysupplying foods suitable for their digestion and taste on the basis of the dietary treatment's standard. Several mental elements of gastroenteric patients have great effect upon the recovery of their di-sorder so that their family and nurses must lead these patients to stabilize their mind and to berestored to health as well as the adequate medical treatment.

중이수술시 일측성 고삭신경 손상 후 미각변화

조양선,정유석,강수미,동헌종 대한이비인후과학회 2000 대한이비인후과학회지 두경부외과학 Vol.43 No.2

제 3시장 流動性(Liquidity)증대를 위한 연구

전양진,강진수 영남이공대학 2002 論文集 Vol.31 No.-

This paper is to study to improve the liquidity of the Korean Third Market. The Third Market is the secondary stock market and has bet opened to give the good circumstances of' financing for the small firms and venture business in march, 2000. But. the performances of the third market failed to meet the our expectations mainly due to its poor liquidity which is essential to the secondary stock market. The liqudity problems of the market is originated firm, the inefficient trading systems, that is. one to one transaction methods adapted in that market. Also, the shortage of the demand power and attractive firms to the investors made the problems of liquidity worse. If we fail to remove the these obstacles of the third maket, the fate of the market is to be similar that of the Nasdaq- Japan.

한국 벤쳐산업 발전에 따른 금융인프라

전양진,강진수 영남이공대학 산업기술연구소 2002 産業技術硏究 Vol.14 No.-

The korean venture business and relevent capital market, that is, Kosdaq are going through the turnnel of restucturing. These restucturings are expected results ealrly for our irrational, ignoring risk investment to the venture business. This paper is to examine the proper financial infra-stucture for promoting korean venture business. First of all, the fund suppliers have to be senstive to the risk bearing the venture business and hold the criteria to evaluate of firm value, especially pure internet corporations. Second, we have to rearange the micro-structure of risky capital markets, that is, the third market and kosdaq.