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김진건 한국수산학회 1984 한국수산과학회지 Vol.17 No.1
漁具의 全抵抗에서 展開板과 끌줄의 抗力을 뺀 나머지를 트로올 그물의 流體抵抗이라 보고, 그물의 流體抵抗과 設計上의 要素 및 曳網速度와의 關係를 R_N=k (d/ℓ) abvⁿ 라고 표현할때, 새바다호에서 사용하고 있는 각종 그물에 대한 k와 n의 값을 구한 결과는 다음과 같다. 1. 6폭짜리 그물에 2가닥의 그물목줄을 쓰는 型(A型)과 8폭짜리 그물에 3가닥의 그물목줄을 쓰는 型(B型)은 曳網速度가 1.8m/sec 이상일때 k는 11, n는 1.8이었다. 2. 10폭짜리 그물에 3가닥의 그물목줄을 쓰는 型(C型)은 曳網速度가 1.8m/sec이하일 때는 k는 12, n는 1.3이며, 曳網速度가 1.8m/sec 이상일 때 k는 9, n는 1.9이었다. 3. 10폭짜리 그물에 4가닥의 그물목줄을 쓰는 型(D型)은 曳網速度가 1.8m/sec 이하일 때는 k는 16, n는 1.0이고, 曳網速度가 1.8m/sec 이상일 때는 k는 9, n는 1.9이었다. The author carried out an experiment to determine the resistance of trawl net aboard M/S Saebada, training ship of National Fisheries University of Pusan, 2,275 G/T and 3,600ps. Total tension loaded on warp were measured by the recording tension meter. Resistance of the net is estimated by subtracting the resistance of otter boards and warps from the total tension. Coefficient k and exponent n of the formula on the trawl net deduced by Koyama, R_N=k (d/ℓ) abvⁿwere calculated from the resistance of the net obtained. The results obtained are can be summarized as follows: 1. Six seamed net with two net pendant k=11, n=1.8 2. Eight seamed net with three net pendant k=11, n=1.8 3. Ten seamed net with three net pendant k=9, n=1.9 4. Ten seamed net with four net pendant k=9, n=1.9
Health Benefits of Green-space for Older People: A Systematic Research Review
김진건,신원섭 한국산림휴양복지학회 2020 한국산림휴양학회지 Vol.24 No.2
This article reviewed the comprehensive health benefits of exposure to greenspaces for older people and the methodological of the included studies to guide future studies. This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The review was conducted to identify full-text articles published from 2007 to 2017. Electronic databases (Scopus, Pubmed, MEDLINE, EBSCO(ASP)) were used to extract articles that evaluated the effects of greenspace and forests on older people. In the final sample, 27 articles were included in the systematic review. We concluded that greenspace was an effective intervention for health promotion such as physiological effect, psychological effect, improvement of quality of life, and expansion of social network for older people. However, it is necessary to improve the design and quality of the development and effectiveness of greenspace for the elderly people and methodological rigor. Future research should be conducted to develop a systematic program aimed at enhancing the health and welfare of the elderly people and on the causal relationship between various healing environments based on nature and the elderly people.
金鎭乾 군산대학교 1967 群山水産專門大學 硏究報告 Vol.1 No.1
The two boat trawl net had a lot of catch in the adjacent sea of Tae-Huk-San Do when Solid face of net-mouth was enlarged and towing area was extended. 1. In terms of relation between the wind-pressure and catch, the catch was towed opposite to the direction of wind, because towing area was extended. 2. In terms of relation between the tidal-pressure and catch, the catch was increased when the trawl net towed along the tidal current, because Solid face of net-mouth was enlarged and towing area was extended.